KR20200012683A - Display apparatus - Google Patents

Abstract

A display device capable of controlling a viewing angle according to an embodiment of the present application comprises: a display panel; and a light path control film attached to the display panel. The light path control film includes a plurality of slits, light blocking particles injected into the plurality of slits, and a drive electrode pattern disposed to cross with a longitudinal direction of the plurality of slits. The light blocking particles are concentrated in an area in which the plurality of slits and the drive electrode pattern cross or are scattered in the entire plurality of slits.

Description

Display device {DISPLAY APPARATUS}

The present application relates to a display device.

Display devices such as a liquid crystal display (LCD), an electroluminescent display device, and the like have easy implementation of high resolution and have various advantages as large-screen displays.

Such a display device includes a display panel for implementing an image. The display panel includes a plurality of pixels, and each of the plurality of pixels includes sub-pixels for implementing individual colors. For example, one pixel may include a red subpixel, a green subpixel, and a blue subpixel.

The display device has been advantageous in securing a viewing angle due to the development of the wide viewing angle technology. However, if necessary, the display device may use a film that blocks side light for security reasons or to improve the standing immersion phenomenon. Has a problem. For example, in the conventional display device, in the process of blocking the light emitted to the side of the display panel, the aperture ratio of the display panel may be lowered and thus the luminance may be lowered. Accordingly, in order to achieve high brightness, power consumption increases. Has In addition, the conventional display device has a problem that the lifespan decreases as power consumption increases.

The present application is to scatter the light blocking particles throughout the plurality of slits to control the viewing angle, the light blocking particles can be concentrated in a specific portion of the plurality of slits to improve the aperture ratio of the display panel and to ensure visibility Shall be.

In addition, the present application achieves a wide viewing angle by condensing the light blocking particles in a specific portion of the plurality of slits in the first mode to reduce the power consumption while ensuring outdoor visibility, and the light blocking particles in the second mode as a whole It is a technical problem to be able to control the viewing angle by implementing a narrow viewing angle scattered in the.

In addition, the present application is to minimize the area where the plurality of slits and the driving electrode pattern overlap, to minimize the area where the light blocking particles are dense and to maximize the aperture ratio of the display panel.

The display device according to the present application includes a display panel and an optical path control film attached to the display panel, wherein the optical path control film includes a plurality of slits, light blocking particles injected into the plurality of slits, and a length direction of the plurality of slits. And a driving electrode pattern disposed to intersect with each other, and the light blocking particles may be concentrated in an intersection area of the plurality of slits and the driving electrode pattern, or may be scattered over the plurality of slits.

A display device according to the present application is a display panel including a circuit element layer including a plurality of thin film transistors, a light emitting element layer connected to each of the plurality of thin film transistors to form a plurality of light emitting regions, and a display panel attached to the display panel. A light path control film, wherein the light path control film includes a plurality of slits, light blocking particles injected into the plurality of slits, and a driving electrode pattern disposed to intersect the longitudinal direction of the plurality of slits, wherein the light blocking particles are The plurality of slits and the driving electrode pattern may be densely intersect with each other, or may be scattered over the plurality of slits.

According to an exemplary embodiment, a display device includes a lower substrate including a plurality of thin film transistors for adjusting light transmittance of each of a plurality of pixels, an upper substrate including a color filter and a black matrix, and a lower substrate and the upper substrate. A display panel including an intervening liquid crystal layer, a backlight unit for irradiating light toward the display panel, and an optical path control film interposed between the display panel and the backlight unit, wherein the optical path control film includes a plurality of slits and a plurality of slits. A light blocking particle injected into a slit of the light blocking particle, and a driving electrode pattern disposed to intersect the longitudinal direction of the plurality of slits, wherein the light blocking particle is concentrated in an intersection area of the plurality of slits and the driving electrode pattern, or the whole of the plurality of slits Can be interspersed with.

Specific details of other examples are included in the detailed description and the drawings.

The display device according to the present application may control the optical viewing angle by scattering the light blocking particles in the entirety of the plurality of slits, and condensing the light blocking particles in specific portions of the plurality of slits to improve the aperture ratio of the display panel and ensure visibility. Can be.

The display device according to the present application concentrates light blocking particles on specific portions of a plurality of slits in a first mode to implement a wide viewing angle, thereby reducing power consumption and ensuring outdoor visibility, and allowing a plurality of light blocking particles in a second mode. The viewing angle can be controlled by scattering the entire slit to realize a narrow viewing angle.

The display device according to the present application can minimize the area where the plurality of slits and the driving electrode patterns overlap, thereby minimizing the area where the light blocking particles are concentrated and maximizing the aperture ratio of the display panel.

In addition to the effects of the present application mentioned above, other features and advantages of the present application will be described below, or will be clearly understood by those skilled in the art from such description and description.

1 is a plan view illustrating a display device according to a first exemplary embodiment of the present application.
FIG. 2 is a cross-sectional view of the line II ′ in the display device shown in FIG. 1.
3 is a diagram illustrating a state in which a driving voltage is applied to a driving electrode pattern in the display device illustrated in FIG. 2.
4 is a cross-sectional view taken along the line II-II ′ shown in FIG. 3.
5 is a perspective view illustrating a display device according to a first exemplary embodiment of the present application.
6 is a plan view illustrating a display device according to a second exemplary embodiment of the present application.
7 is a diagram illustrating a state in which a driving voltage is applied to a driving electrode pattern in the display device according to the second exemplary embodiment of the present application.
8 is a perspective view illustrating a display device according to a second exemplary embodiment of the present application.
9 is a plan view illustrating a display device according to a third exemplary embodiment of the present application.
10 is a perspective view illustrating a display device according to a third exemplary embodiment of the present application.
11 is a plan view illustrating a display device according to a fourth exemplary embodiment of the present application.
12 is a perspective view illustrating a display device according to a fourth exemplary embodiment of the present application.
FIG. 13 is an example of a cross-sectional view taken along the line III-III ′ of FIG. 11.
FIG. 14 is another example of a cross-sectional view taken along the line III-III ′ shown in FIG. 11.
15A to 15C are cross-sectional views illustrating the movement of the light blocking particles when a driving voltage is applied to the driving electrode pattern, and a plan view illustrating the light transmittance of the light path control film.
16 is a cross-sectional view illustrating a display device according to a fifth exemplary embodiment of the present application.
17 is a cross-sectional view illustrating a display device according to a sixth exemplary embodiment of the present application.
18 is a plan view illustrating a display device according to a seventh exemplary embodiment of the present application.
19 is a cross-sectional view taken along the line IV-IV 'in the display device shown in FIG. 18.
20 is a view illustrating a state in which a driving voltage is applied to each of the lower driving electrode pattern and the upper driving electrode pattern in the display device of FIG. 18.
FIG. 21 is a cross-sectional view taken along the line VV ′ shown in FIG. 20.
FIG. 22 is a perspective view illustrating the first and second light path control layers illustrated in FIG. 19.
23 is a plan view illustrating a display device according to an eighth embodiment of the present application.
24 is a cross-sectional view taken along the line V-V 'in the display device shown in FIG.
25 is a plan view illustrating a display device according to a ninth embodiment of the present application.
FIG. 26 is a cross-sectional view taken along the line VI-VI ′ in the display device illustrated in FIG. 25.
27 is a plan view illustrating a display device according to a tenth exemplary embodiment of the present application.
FIG. 28 is a diagram illustrating a state in which a driving voltage is applied to each of the lower driving electrode patterns and the upper driving electrode patterns in the display device illustrated in FIG. 27.
FIG. 29 is a perspective view illustrating the first and second light path control layers illustrated in FIG. 27.
30 is a view for explaining light efficiency and shielding characteristics according to widths, intervals, and heights of a plurality of slits of the optical path control film.
FIG. 31 is a diagram illustrating an optical profile of each of the first mode and the second mode in the display device of FIG. 18.

Advantages and features of the present application, and a method of achieving them will be apparent with reference to the examples described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the examples disclosed below, but will be implemented in various forms, and only the examples are intended to complete the disclosure of the present invention and to those skilled in the art to which the present invention pertains. It is provided to inform the full scope of the invention, which is to be defined only by the scope of the claims.

Shapes, sizes, ratios, angles, numbers, and the like disclosed in the drawings for explaining the example of the present application are exemplary and the present invention is not limited to the illustrated matters. Like reference numerals refer to like elements throughout. In addition, in describing the present application, when it is determined that the detailed description of the related known technology may unnecessarily obscure the subject matter of the present application, the detailed description thereof will be omitted. When 'include', 'have', 'consist of', etc. mentioned in the present application are used, other parts may be added unless 'only' is used. In the case where the component is expressed in the singular, the plural includes the plural unless specifically stated otherwise.

In interpreting a component, it is interpreted to include an error range even if there is no separate description.

In the case of the description of the positional relationship, for example, if the positional relationship of the two parts is described as 'on', 'upper', 'lower', 'next to', etc. Alternatively, one or more other parts may be located between the two parts unless 'direct' is used.

The first, second, etc. are used to describe various components, but these components are not limited by these terms. These terms are only used to distinguish one component from another. Therefore, the first component mentioned below may be a second component within the technical spirit of the present invention.

In describing the components of the present application, terms such as first and second may be used. These terms are only to distinguish the components from other components, and the terms are not limited in nature, order, order or number of the components. When a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected to or connected to that other component, but between components It will be understood that the elements may be "interposed" or each component may be "connected", "coupled" or "connected" through other components.

Each of the features of the various examples of the present application may be combined or combined with each other, partly or wholly, and technically various interlocking and driving are possible, and each of the examples may be independently implemented with respect to each other or may be implemented in association with each other. .

Hereinafter, an example of the present application will be described with reference to the accompanying drawings and examples.

1 is a plan view illustrating a display device according to a first exemplary embodiment of the present application, and FIG. 2 is a cross-sectional view taken along line II ′ of FIG. 1. 3 is a diagram illustrating a state in which a driving voltage is applied to a driving electrode pattern in the display device according to the first exemplary embodiment of the present application, and FIG. 4 is a cross-sectional view taken along the line II-II ′ of FIG. 3. 1 and 2 illustrate a state in which the light blocking particles 281 are scattered over the entire regions of the plurality of slits 250, and FIGS. 3 and 4 show the light blocking particles 281 in the driving electrode pattern 220. ) And a plurality of slits 250 in a state overlapped with each other. 5 is a perspective view illustrating a display device according to a first exemplary embodiment of the present application.

1 to 5, the display device includes a display panel 100, an optical path control film 200, and a display driving circuit unit 300.

The display panel 100 may include a display area AA and a non-display area NA. The display area AA is an area where an image is displayed and may correspond to a central portion of the display panel 100. The non-display area NA is an area where an image is not displayed and may correspond to an edge portion of the display panel 100 surrounding the display area AA. For example, the display panel 100 may be any type of display panel such as a liquid crystal display panel, an organic light emitting diode (OLED) display panel, and an electroluminescent display panel.

For example, when the display panel 100 is a liquid crystal display panel, the display panel 100 includes a plurality of gate lines and data lines, and a plurality of pixels formed in an intersection area of the gate line and the data line. In this case, the display panel 100 includes a lower substrate including a thin film transistor that is a switching element for adjusting light transmittance in each of the plurality of pixels, an upper substrate including a color filter and / or a black matrix, and a lower substrate. It may include a liquid crystal layer formed between the substrate and the upper substrate.

For another example, when the display panel is an organic electroluminescent (OLED) display panel, the display panel may include a plurality of gate lines and data lines, and a plurality of pixels formed at an intersection of the gate lines and the data lines. Can be. In this case, the display panel 100 includes an array substrate including a thin film transistor that is an element for selectively applying a voltage to each of the plurality of pixels, an organic light emitting element layer on the array substrate, and an array to cover the organic light emitting element layer. It may include an encapsulation substrate or an encapsulation substrate disposed on the substrate. The encapsulation substrate protects the thin film transistor, the organic light emitting element layer, and the like from an external impact, and can prevent moisture and oxygen from penetrating into the organic light emitting element layer. The layer formed on the array substrate may include an inorganic light emitting layer, for example, a nano-sized material layer or a quantum dot.

The light path control film 200 may be disposed on a front surface or a rear surface of the display panel 100. The light path control film 200 may be disposed to overlap the display area AA of the display panel 100. According to an example, the optical path control film 200 may be attached to the display panel 100 through an adhesive member or may be integrally provided with the display panel 100.

The optical path control film 200 may include a first base film 210, a driving electrode pattern 220, an adhesive layer 230, a plurality of protruding patterns 240, a plurality of slits 250, a common electrode 260, and It may include a second base film 270.

The first base film 210 may support the driving electrode pattern 220. For example, the first base film 210 may be made of a transparent material, and may have a top and bottom surfaces having a flat structure.

The driving electrode pattern 220 may be patterned on the first base film 210. For example, the driving electrode pattern 220 may be formed of a transparent electrode such as ITO, but is not necessarily limited thereto. In addition, the driving electrode pattern 220 may face the common electrode 260 with a plurality of slits 250 interposed therebetween, and the driving electrode pattern 220 may drive the driving voltage Vd from the display driving circuit unit 300. Can be authorized.

The driving electrode pattern 220 may be disposed to cross the length direction of the plurality of slits 250. According to an example, the driving electrode pattern 220 may be disposed to minimize an area overlapping the plurality of slits 250. For example, when each of the plurality of slits 250 has a line shape extending along the first direction X, the driving electrode pattern 220 may face the second direction Y crossing the first direction X. FIG. Can be extended accordingly. Here, the first direction X may correspond to the horizontal direction, and the second direction Y may correspond to the vertical direction, but is not limited thereto. As such, the arrangement of the driving electrode patterns 220 may be changed according to the arrangement of the plurality of slits 250, so that the region overlapping the plurality of slits 250 may be minimized in the driving electrode patterns 220.

The adhesive layer 230 may attach the plurality of protrusion patterns 240 on the driving electrode pattern 220. That is, the adhesive layer 230 may be interposed between the plurality of protruding patterns 240, the plurality of slits 250, and the driving electrode pattern 220. For example, the adhesive layer 230 may be an optical clear adhesive (OCA). For another example, the adhesive layer 230 may be an optical clear resin (OCR). In this case, the adhesive layer 230 may further include a sealing layer interposed between the plurality of protruding patterns 240 and the plurality of slits 250.

The plurality of protruding patterns 240 may be attached onto the driving electrode pattern 220 through the adhesive layer 230. In detail, the plurality of protruding patterns 240 may be formed on the second base film 270 and the common electrode 260, and then attached to the driving electrode patterns 220 formed on the first base film 210. . As such, when the plurality of protrusion patterns 240 are attached to the driving electrode pattern 220 through the adhesive layer 230, the plurality of slits 250 surrounded by the plurality of protrusion patterns 240 and the adhesive layer 230 are formed. Can be. Accordingly, each of the plurality of slits 250 may correspond to a recess provided between each of the plurality of protruding patterns 240 adjacent to each other.

According to an example, the plurality of protruding patterns 240 apply a predetermined material layer on the second base film 270 and the common electrode 260 and then press the predetermined material layer by using a stamper. It can be formed through the process. Here, the predetermined material layer may correspond to UV resin or photoresist. That is, the stamper may form a plurality of protruding patterns 240 and form a plurality of slits 250 corresponding to the plurality of protruding patterns 240. In addition, the stamper may determine the shape of the plurality of slits 250 corresponding to the plurality of protrusion patterns 240.

The plurality of slits 250 may be surrounded by the plurality of protruding patterns 240 and the adhesive layer 230, and each of the plurality of slits 250 may correspond to a recess provided between the plurality of protruding patterns 240 adjacent to each other. . As described above, each of the plurality of slits 250 may have a line shape extending along the first direction X, but is not limited thereto and may be disposed in various forms.

The common electrode 260 may be disposed on the second base film 270. The common electrode 260 may be formed of a transparent electrode such as ITO, but is not limited thereto. The common electrode 260 may be formed as one electrode covering the entire surface of the second base film 270, or may be formed to correspond to the driving electrode pattern 220. In addition, the common electrode 260 may face the driving electrode pattern 220 with the plurality of protruding patterns 240 and the plurality of slits 250 interposed therebetween. For example, the common electrode 260 may receive a low potential voltage lower than the driving voltage Vd or be grounded.

Before the second base film 270 is bonded to the first base film 210, the second base film 270 may support the common electrode 260 and the plurality of protruding patterns 240. For example, the second base film 270 may be made of a transparent material, and may have a flat top and bottom surfaces.

The electrophoretic solution 280 may be provided by mixing the light blocking particles 281 and the transparent fluid 283. In the electrophoretic solution 280, when the first base film 210 and the second base film 270 are bonded together, a plurality of slits 250 surrounded by the plurality of protruding patterns 240 and the adhesive layer 230 are formed. , May be injected into the plurality of slits 250.

The light blocking particle 281 may include an electrophoretic material that moves in the direction of the driving electrode pattern 220 when the driving voltage Vd is applied to the driving electrode pattern 220. That is, the light blocking particles 281 may have light blocking (or light absorption) characteristics while having electrophoretic characteristics. According to an example, the light blocking particles 281 may block (or absorb) a portion of the light L emitted from the display panel 100. For example, the light blocking particles 281 may be made of carbon black having excellent light absorption and high electrical conductivity, but is not necessarily limited thereto. The transparent fluid 283 may transmit light, flow in the plurality of slits 250, and support movement of the light blocking particles 281.

For example, when the light blocking particles 281 are made of carbon black, and the ratio of the light blocking particles 281 in the electrophoretic solution 280 is 3.5%, the light path control film 200 may be It may have a transmittance as shown in Table 1 below.

Gap 5μm Gap 10μm Gap 15μm Gap 20μm Sample 1 Luminance [nit] 138 32.7 15.5 7.2 Transmittance [%] 2.46 0.58 0.28 0.13 Sample 2 Luminance [nit] 139.7 24.8 23.2 3.6 Transmittance [%] 2.49 0.44 0.41 0.06 Sample 3 Luminance [nit] - 12.2 25.2 5.4 Transmittance [%] - 0.22 0.45 0.10 Average transmittance [%] 2.52 0.42 0.36 0.10

Here, Samples 1 to 3 correspond to samples having the same ratio of light blocking particles 281 in the electrophoretic solution 280 at 3.5%, and Gap corresponds to the widths of the plurality of slits 250. That is, as the width of the plurality of slits 250 increases, the transmittance of the light path control film 200 may decrease. However, since the narrow viewing angle mode is easy to implement when the widths of the plurality of slits 250 are increased, the width of the plurality of slits 250 enables the narrow viewing angle mode to be realized while minimizing a decrease in transmittance of the optical path control film 200. For example, if the light blocking particles 281 are made of carbon black, and the ratio of the light blocking particles 281 in the electrophoretic solution 280 is 5%, The electrophoretic solution 280 may have a transmittance as shown in Table 2 below.

Gap 5μm Gap 10μm Gap 15μm Gap 20μm Sample 4 Luminance [nit] 38 9.2 3.5 0.8 Transmittance [%] 0.68 0.16 0.06 0.01 Sample 5 Luminance [nit] 33 5.4 1.5 2.5 Transmittance [%] 0.59 0.10 0.03 0.04 Sample 6 Luminance [nit] 13.6 35.7 4.5 1.9 Transmittance [%] 0.24 0.64 0.08 0.03 Average transmittance [%] 0.50 0.30 0.06 0.03

Here, Samples 4 to 6 correspond to samples having the same ratio of the light blocking particles 281 in the electrophoretic solution 280 at 5%, and Gap corresponds to the widths of the plurality of slits 250. That is, as the width of the plurality of slits 250 increases, the transmittance of the light path control film 200 may decrease. In addition, when [Table 1] and [Table 2] are compared, as the ratio of the light blocking particles 281 in the electrophoretic solution 280 increases, the transmittance of the light path control film 200 may decrease. As such, each of the ratio of the light blocking particles 281 and the width of the plurality of slits 250 in the electrophoretic solution 280 is such that the narrow viewing angle mode can be easily implemented while minimizing a decrease in transmittance of the optical path control film 200. 1 and 2, when the driving voltage Vd is not applied to the driving electrode pattern 220, the light blocking particles 281 may be scattered over the entire regions of the plurality of slits 250. have. In detail, when the light blocking particles 281 are scattered in the entire regions of the plurality of slits 250, the light blocking particles 281 may block a part of the light L emitted from the display panel 100. For example, the light L emitted toward the front of the display panel 100 is not blocked by the light blocking particles 281, and is a direction except for the front of the display panel 100 (for example, a front diagonal direction). Light (L) emitted to may be blocked by the light blocking particles (281). That is, the optical path control film 200 can control the optical viewing angle of the display device by scattering the light blocking particles 281 in the entire regions of the plurality of slits 250.

3 and 4, when the driving voltage Vd is applied to the driving electrode pattern 220, the light blocking particle 281 overlaps (or crosses) the overlapping region of the driving electrode pattern 220 and the plurality of slits 250. Area). For example, regions where the light blocking particles 281 are densely arranged may be spaced apart from each other on a plane. In addition, only the transparent fluid 283 may remain in an area of the plurality of slits 250 that does not cross the driving electrode pattern 220. In detail, the driving electrode pattern 220 may receive the driving voltage Vd from the driving integrated circuit 330 of the display driving circuit unit 300, and the light blocking particles 281 may include the driving electrode pattern 220 and the plurality of driving electrodes. It may be concentrated at the shortest distance between the slits 250. That is, the light blocking particles 281 may overlap the driving electrode pattern 220 and the plurality of slits 250 in a region where the driving electrode pattern 220 and the plurality of slits 250 do not overlap with respect to the plane direction. You can move to an area. The light blocking particles 281 may move to approach the driving electrode pattern 220 based on a direction perpendicular to the plane direction. When the light blocking particles 281 are concentrated at the shortest distance between the driving electrode pattern 220 and the plurality of slits 250, only the transparent fluid 283 may remain in the remaining areas of the plurality of slits 250. As such, when the light blocking particles 281 are concentrated in the overlapping area of the driving electrode pattern 220 and the plurality of slits 250, the light path control film 200 may emit light L emitted from the display panel 100. Can be transmitted. For example, the lights L emitted in the front and front diagonal directions of the display panel 100 may not be blocked by the light blocking particles 281 and may pass through the light path control film 200. That is, the light path control film 200 may concentrate the light blocking particles 281 in the overlapping area of the driving electrode pattern 220 and the plurality of slits 250, thereby improving the aperture ratio of the display panel 100.

Therefore, the optical path control film 200 determines whether the light blocking particles 281 are dense according to whether the driving voltage Vd is applied, thereby selectively controlling the optical viewing angle or improving the aperture ratio of the display panel. . As a result, the light path control film 200 may determine whether the light blocking particles 281 are dense, thereby ensuring outdoor visibility, and reducing power consumption to extend the life of the display device.

According to an example, the light path control film 200 densifies the light blocking particles 281 at the shortest distance between the driving electrode pattern 220 and the plurality of slits 250 in the first mode so that the light path control film 200 may be disposed in the display panel 100. The light emitted may be transmitted, and the light blocking particles 281 may be interspersed over the entire areas of the plurality of slits 250 in the second mode to block a part of the light emitted from the display panel 100. Here, the optical path control film 200 may control the optical viewing angle through the second mode, and may improve the aperture ratio of the display panel 100 over the second mode through the first mode. For example, the first mode may correspond to a wide viewing angle mode or a daytime mode, and the second mode may correspond to a narrow viewing angle mode or a night mode, but is not limited thereto. As such, the optical path control film 200 may improve the aperture ratio of the display panel 100 in the first mode, thereby realizing high brightness without increasing the power consumption for driving the display panel 100. In addition, the optical path control film 200 controls the optical viewing angle in the second mode so that the image of the display panel 100 is reflected in another place (for example, glass disposed around the display panel 100). It can prevent. As a result, the optical path control film 200 may improve the aperture ratio of the display panel or control the optical viewing angle by selecting one of the first mode and the second mode.

The display driving circuit unit 300 may include a plurality of circuit films 310, a plurality of driving integrated circuits 330, a printed circuit board 350, and a timing controller 370.

Each of the plurality of circuit films 310 may be attached to the pad portion of the display panel 100 and the printed circuit board 350. For example, an input terminal provided on one side of each of the plurality of circuit films 310 is attached to the printed circuit board 350 by a film attaching process, and an output terminal provided on the other side of the plurality of circuit films 310 is attached to the film. It may be attached to the pad portion of the display panel 100 by a process.

Each of the plurality of driving integrated circuits 330 may be separately mounted on each of the plurality of circuit films 310. Each of the plurality of driving integrated circuits 330 receives pixel data and a data control signal provided from the timing controller 370, and converts the pixel data into an analog type pixel-specific data signal according to the data control signal, thereby corresponding data. Can be supplied to the line.

According to an example, one of the plurality of driving integrated circuits 330 may provide a driving voltage Vd to the driving electrode pattern 220 while providing a data voltage to the plurality of thin film transistors. Can be. Accordingly, the optical path control film 200 does not require a separate driving integrated circuit, and the driving electrode pattern 220 is driven through the driving integrated circuit 330 of the display driving circuit unit 300 for driving the display panel 100. The driving voltage Vd may be applied to the.

The printed circuit board 350 may support the timing controller 370 and transmit power and signals between the components of the display driving circuit unit 300.

The timing controller 370 may be mounted on the printed circuit board 350 and may receive image data and timing synchronization signals provided from the display driving system through a user connector provided on the printed circuit board 350. The timing controller 370 generates a data control signal and a scan control signal based on the timing synchronization signal, controls driving timing of each of the driving integrated circuits 330 through the data control signal, and controls the scan control signal. The driving timing of the scan driving circuit unit can be controlled.

6 is a plan view illustrating a display device according to a second exemplary embodiment of the present application, and FIG. 7 is a view illustrating a driving voltage applied to a driving electrode pattern in the display device according to the second exemplary embodiment of the present application. 8 is a perspective view illustrating a display device according to a second exemplary embodiment of the present application. 6 through 8 differ from the first embodiment of FIGS. 1 through 5 in the configuration of the driving electrode pattern 220, the plurality of protruding patterns 240, and the plurality of slits 250. The same configuration as that described above will be briefly described or omitted. For example, each of the slits 250 of the display device of FIGS. 1 to 5 has a line shape extending along the first direction, and the plurality of slits 250 of the display device of FIGS. It may include a plurality of first slits 251 extending along the first direction X and a plurality of second slits 252 extending along the second direction Y orthogonal to the first direction X. FIG. .

6 to 8, the plurality of protruding patterns 240 may be attached onto the driving electrode pattern 220 through the adhesive layer 230. In detail, the plurality of protruding patterns 240 may be formed on the second base film 270 and the common electrode 260, and then attached to the driving electrode patterns 220 formed on the first base film 210. . As such, when the plurality of protrusion patterns 240 are attached to the driving electrode pattern 220 through the adhesive layer 230, the plurality of slits 250 surrounded by the plurality of protrusion patterns 240 and the adhesive layer 230 are formed. Can be. Accordingly, each of the plurality of slits 250 may correspond to a recess provided between each of the plurality of protruding patterns 240 adjacent to each other.

The plurality of slits 250 may be surrounded by the plurality of protruding patterns 240 and the adhesive layer 230, and each of the plurality of slits 250 may correspond to a recess provided between the plurality of protruding patterns 240 adjacent to each other. . For example, the plurality of slits 250 may include a plurality of first slits 251 extending along the first direction X and a plurality of slits extending along the second direction Y orthogonal to the first direction X. FIG. May include a second slit 252. That is, when each of the plurality of first and second slits 251 and 252 has a grid shape extending along each of the first direction X and the second direction Y, the driving electrode pattern 220 may have a first shape. It may extend along a diagonal direction between the direction X and the second direction Y. Therefore, the driving electrode pattern 220 may extend along the direction in which the region overlapping the plurality of slits 250 is minimized. As such, the arrangement of the driving electrode patterns 220 may be changed according to the arrangement of the plurality of slits 250, so that the region overlapping the plurality of slits 250 may be minimized. The aperture ratio of the display panel 100 may be improved by minimizing the area where the light blocking particles 281 are concentrated.

As described above, each of the plurality of slits 250 may have a lattice shape extending along each of the first direction X and the second direction Y crossing the first direction X, but is not limited thereto. It can be arranged in various forms without.

As illustrated in FIG. 6, when the driving voltage Vd is not applied to the driving electrode pattern 220, the light blocking particles 281 may be scattered over the entire areas of the plurality of first and second slits 251 and 252. have. Specifically, when the light blocking particles 281 are scattered in the entire area of the plurality of first and second slits 251 and 252, the light blocking particles 281 may block a part of the light emitted from the display panel 100. Can be. That is, the optical path control film 200 can control the optical viewing angle of the display device by scattering the light blocking particles 281 in the entire areas of the plurality of first and second slits 251 and 252.

As illustrated in FIG. 7, when the driving voltage Vd is applied to the driving electrode pattern 220, the light blocking particles 281 may be formed of the driving electrode pattern 220 and the plurality of first and second slits 251 and 252. It may be concentrated in an overlapping region (or an intersection region). In addition, only the transparent fluid 283 may remain in an area of the plurality of first and second slits 251 and 252 not intersecting with the driving electrode pattern 220. In detail, the driving electrode pattern 220 may receive the driving voltage Vd from the driving integrated circuit 330 of the display driving circuit unit 300, and the light blocking particles 281 may include the driving electrode pattern 220 and the plurality of driving electrodes. It may be concentrated at the shortest distance between the first and second slits 251 and 252. That is, the light blocking particles 281 may be formed of the driving electrode pattern 220 and the plurality of driving electrode patterns 220 in a region where the driving electrode patterns 220 and the plurality of first and second slits 251 and 252 do not overlap with respect to the plane direction. The first and second slits 251 and 252 may move to an overlapping area. The light blocking particles 281 may move to approach the driving electrode pattern 220 based on a direction perpendicular to the plane direction. When the light blocking particles 281 are concentrated at the shortest distance between the driving electrode pattern 220 and the plurality of first and second slits 251 and 252, the plurality of first and second slits 251 and 252 may be used. Only the transparent fluid 283 may remain in the remaining area of the. As such, when the light blocking particles 281 are concentrated in the overlapping area of the driving electrode pattern 220 and the plurality of slits 250, the light path control film 200 may transmit light emitted from the display panel 100. Can be. For example, light emitted in front and front diagonal directions of the display panel 100 may not be blocked by the light blocking particles 281 and may pass through the light path control film 200. That is, the light path control film 200 may concentrate the light blocking particles 281 in the overlapping area of the driving electrode pattern 220 and the plurality of slits 250, thereby improving the aperture ratio of the display panel 100.

9 is a plan view illustrating a display device according to a third embodiment of the present application, and FIG. 10 is a perspective view illustrating a display device according to a third embodiment of the present application. The display device of FIG. 9 includes the driving through electrode 290 instead of the driving electrode pattern 220 of the display device of FIG. 1, and the same configuration as the above-described configuration will be briefly described or omitted.

The light path control film 200 may include a first base film 210, an adhesive layer 230, a plurality of protruding patterns 240, a plurality of slits 250, a common electrode 260, a second base film 270, And a driving barrel electrode 290.

The first base film 210 may support the driving barrel electrode 290. For example, the first base film 210 may be made of a transparent material, and may have a top and bottom surfaces having a flat structure.

The driving through electrode 290 may be disposed on the first base film 210. For example, the driving through electrode 290 may be formed of a transparent electrode such as ITO, but is not necessarily limited thereto. According to an example, the driving through electrode 290 may be formed as one electrode covering the entire surface of the first base film 210. In addition, the driving through electrode 290 may face the common electrode 260 with the plurality of slits 250 interposed therebetween, and the driving through electrode 290 may drive the driving voltage Vd from the display driving circuit unit 300. Can be authorized.

The adhesive layer 230 may attach the plurality of protruding patterns 240 on the driving through electrode 290. That is, the adhesive layer 230 may be interposed between the plurality of protruding patterns 240 and the plurality of slits 250 and the driving through electrode 290. For example, the adhesive layer 230 may be an optical clear adhesive (OCA). For another example, the adhesive layer 230 may be an optical clear resin (OCR). In this case, the adhesive layer 230 may further include a sealing layer interposed between the plurality of protruding patterns 240 and the plurality of slits 250.

The plurality of protruding patterns 240 may be attached onto the driving through electrode 290 through the adhesive layer 230. In detail, the plurality of protruding patterns 240 may be formed on the second base film 270 and the common electrode 260 and then attached to the driving through electrode 290 formed on the first base film 210. . As such, when the plurality of protrusion patterns 240 are attached to the driving through electrode 290 through the adhesive layer 230, a plurality of slits 250 surrounded by the plurality of protrusion patterns 240 and the adhesive layer 230 are formed. Can be. Accordingly, each of the plurality of slits 250 may correspond to a recess provided between each of the plurality of protruding patterns 240 adjacent to each other.

The plurality of slits 250 may be surrounded by the plurality of protruding patterns 240 and the adhesive layer 230, and each of the plurality of slits 250 may correspond to a recess provided between the plurality of protruding patterns 240 adjacent to each other. . As described above, each of the plurality of slits 250 may have a line shape extending along the first direction X, but is not limited thereto and may be disposed in various forms.

The common electrode 260 may be disposed on the second base film 270. The common electrode 260 may be formed of a transparent electrode such as ITO, but is not limited thereto. The common electrode 260 may be formed as one electrode covering the entire surface of the second base film 270. In addition, the common electrode 260 may face the driving tube electrode 290 with the plurality of protruding patterns 240 and the plurality of slits 250 interposed therebetween. For example, the common electrode 260 may receive a low potential voltage lower than the driving voltage Vd or be grounded.

Before the second base film 270 is bonded to the first base film 210, the second base film 270 may support the common electrode 260 and the plurality of protruding patterns 240. For example, the second base film 270 may be made of a transparent material, and may have a flat top and bottom surfaces.

The electrophoretic solution 280 may be provided by mixing the light blocking particles 281 and the transparent fluid 283. In the electrophoretic solution 280, when the first base film 210 and the second base film 270 are bonded together, a plurality of slits 250 surrounded by the plurality of protruding patterns 240 and the adhesive layer 230 are formed. , May be injected into the plurality of slits 250.

11 is a plan view illustrating a display device according to a fourth embodiment of the present application, and FIG. 12 is a perspective view illustrating a display device according to a fourth embodiment of the present application. Here, the display device of FIGS. 11 and 12 is different from the configuration of the plurality of protruding patterns 240 and the plurality of slits 250 of the display device of FIGS. 9 and 10. It will be explained or omitted. For example, each of the plurality of slits 250 of the display device of FIGS. 9 and 10 has a line shape extending along the first direction, and each of the plurality of slits 250 of the display device of FIGS. It may include a plurality of first slits 251 extending along the first direction X and a plurality of second slits 252 extending along the second direction Y orthogonal to the first direction X. FIG. .

11 and 12, the plurality of protruding patterns 240 may be attached onto the driving through electrode 290 through the adhesive layer 230. In detail, the plurality of protruding patterns 240 may be formed on the second base film 270 and the common electrode 260 and then attached to the driving through electrode 290 formed on the first base film 210. . As such, when the plurality of protrusion patterns 240 are attached to the driving through electrode 290 through the adhesive layer 230, a plurality of slits 250 surrounded by the plurality of protrusion patterns 240 and the adhesive layer 230 are formed. Can be. Accordingly, each of the plurality of slits 250 may correspond to a recess provided between each of the plurality of protruding patterns 240 adjacent to each other.

The plurality of slits 250 may be surrounded by the plurality of protruding patterns 240 and the adhesive layer 230, and each of the plurality of slits 250 may correspond to a recess provided between the plurality of protruding patterns 240 adjacent to each other. . For example, the plurality of slits 250 may include a plurality of first slits 251 extending along the first direction X and a plurality of slits extending along the second direction Y orthogonal to the first direction X. FIG. May include a second slit 252. According to an example, each of the plurality of slits 250 may have a lattice shape extending along each of the first direction X and the second direction Y crossing the first direction X, but is not limited thereto. It can be arranged in various forms without.

FIG. 13 is an example of a cross-sectional view taken along the line III-III ′ of FIG. 11.

Referring to FIG. 13, when the driving voltage Vd is not applied to the driving through electrode 290, the light blocking particles 281 may be scattered over the entire areas of the plurality of first and second slits 251 and 252. Can be. Specifically, when the light blocking particles 281 are scattered in the entire area of the plurality of first and second slits 251 and 252, the light blocking particles 281 may block a part of the light emitted from the display panel 100. Can be. That is, the optical path control film 200 can control the optical viewing angle of the display device by scattering the light blocking particles 281 in the entire areas of the plurality of first and second slits 251 and 252.

FIG. 14 is another example of a cross-sectional view taken along the line III-III ′ shown in FIG. 11.

Referring to FIG. 14, when the driving voltage Vd is applied to the driving through electrode 290, the light blocking particle 281 may include the driving through electrode 290 and the plurality of first and second slits 251 and 252. It can be concentrated in overlapping regions (or intersecting regions) of. Specifically, the driving through electrode 290 may receive the driving voltage Vd from the driving integrated circuit 330 of the display driving circuit unit 300, and the light blocking particles 281 may be provided with the driving through electrode 290. It may be concentrated at the shortest distance between the first and second slits 251, 252. In this case, only the transparent fluid 283 may remain in an area of the plurality of first and second slits 251 and 252 that is relatively far from the driving tube electrode 290. That is, the light blocking particles 281 may move to approach the driving cylinder electrode 290 based on the direction perpendicular to the plane direction. As such, when the light blocking particles 281 are concentrated at the shortest distance between the driving tube electrode 290 and the plurality of slits 250, the light path control film 200 transmits the light emitted from the display panel 100. You can. For example, light emitted in front and front diagonal directions of the display panel 100 may not be blocked by the light blocking particles 281 and may pass through the light path control film 200. That is, the light path control film 200 may concentrate the light blocking particles 281 in the overlapping region of the driving tube electrode 290 and the plurality of slits 250, thereby improving the aperture ratio of the display panel 100.

15A to 15C are cross-sectional views illustrating the movement of the light blocking particles when a driving voltage is applied to the driving electrode pattern, and a plan view illustrating the light transmittance of the light path control film. Here, FIG. 13A illustrates a state in which the driving voltage Vd is not applied to the driving electrode pattern 220, and FIG. 13B illustrates light blocking particles immediately after the driving voltage Vd is applied to the driving electrode pattern 220. FIG. 13C illustrates a state in which the 281 is dense, and FIG. 13C illustrates a state in which the driving voltage Vd is applied to the driving electrode pattern 220 to complete the compaction of the light blocking particles 281.

Referring to FIG. 15A, when the driving voltage Vd is not applied to the driving electrode pattern 220, the light blocking particles 281 may be scattered over the entire regions of the plurality of slits 250. In detail, when the light blocking particles 281 are scattered in the entire regions of the plurality of slits 250, the light blocking particles 281 may block a part of the light L emitted from the display panel 100. For example, the light L emitted toward the front of the display panel 100 is not blocked by the light blocking particles 281, and is a direction except for the front of the display panel 100 (for example, a front diagonal direction). Light (L) emitted to may be blocked by the light blocking particles (281). As such, the transmittance of the light path control film 200 may be lowered. Therefore, the light path control film 200 may scatter the light blocking particles 281 in the entire regions of the plurality of slits 250 to control the optical viewing angle of the display device.

Referring to FIG. 15B, the light blocking particles 281 may move toward the driving electrode pattern 220 immediately after the driving voltage Vd is applied to the driving electrode pattern 220. Specifically, the light blocking particles 281 overlap the driving electrode pattern 220 and the plurality of slits 250 in a region where the driving electrode pattern 220 and the plurality of slits 250 do not overlap with respect to the plane direction. You can move to the area. The light blocking particles 281 may move to approach the driving electrode pattern 220 based on a direction perpendicular to the plane direction.

Referring to FIG. 15C, when the driving voltage Vd is applied to the driving electrode pattern 220, the light blocking particles 281 are concentrated at the shortest distance between the driving electrode pattern 220 and the plurality of slits 250. Only the transparent fluid 283 may remain in the remaining area of the slit 250. As such, when the light blocking particles 281 are concentrated in the overlapping area of the driving electrode pattern 220 and the plurality of slits 250, the light path control film 200 may emit light L emitted from the display panel 100. Can be transmitted. For example, the lights L emitted in the front and front diagonal directions of the display panel 100 may not be blocked by the light blocking particles 281 and may pass through the light path control film 200. As such, the transmittance of the light path control film 200 may be increased. Therefore, the light path control film 200 may concentrate the light blocking particles 281 in the overlapping area of the driving electrode pattern 220 and the plurality of slits 250, thereby improving the aperture ratio of the display panel 100.

16 is a cross-sectional view illustrating a display device according to a fifth exemplary embodiment of the present application. In the fifth embodiment of FIG. 16, the display panel 400 includes a light emitting device layer, and the same configuration as that described above will be briefly described or omitted.

Referring to FIG. 16, the display device includes a display panel 400 and an optical path control film 200.

The display panel 400 includes a substrate 410, a circuit element layer TFTL, a planarization layer 420, a light emitting element layer EDL, an encapsulation layer 430, a plurality of color filters CF, and a black matrix BM. ), And a buffer layer 440.

The substrate 410 is a base substrate and may be a flexible substrate. For example, the substrate 410 may include a transparent polyimide material.

The circuit element layer TFTL is formed on the substrate 410 and may include a plurality of signal lines, a plurality of thin film transistors, and a capacitor.

The planarization layer 420 may be formed on the circuit element layer TFTL to planarize an upper end of the circuit element layer TFTL.

The light emitting device layer EDL may be connected to each of the plurality of transistors to form a plurality of light emitting regions OA. Specifically, the light emitting device layer EDL may include an anode electrode AE, an organic light emitting layer EL, a cathode electrode CE, and a bank B. FIG. The anode AE may be patterned to correspond to each of the plurality of pixels. The bank B may be formed in a matrix structure to define a plurality of emission regions. The organic emission layer EL may be formed on the anode AE and the bank B, and the cathode electrode CE may be formed on the organic emission layer EL.

The encapsulation layer 430 may be formed on the light emitting device layer EDL to prevent external moisture from penetrating into the light emitting device layer EDL.

The plurality of color filters CF may be disposed on the encapsulation layer 430 and correspond to each of the plurality of emission regions OA. The black matrix BM may be disposed between the plurality of color filters CF. Thus, the black matrix BM may be disposed between the plurality of emission regions OA.

The buffer layer 440 may cover the plurality of color filters CF and the black matrix BM, and may provide a flat surface on the plurality of color filters CF and the black matrix BM.

Such a display panel 400 may be modified in various structures known in the art.

An intersection area of the driving electrode pattern 220 and the plurality of slits 250 may overlap the black matrix BM. In detail, when the driving voltage Vd is applied to the driving electrode pattern 220, the light blocking particles 281 may be concentrated in the overlapping region of the driving electrode pattern 220 and the plurality of slits 250. In this case, the light blocking particles 281 may be concentrated in a region where the driving electrode pattern 220 and the plurality of slits 250 overlap the black matrix BM. That is, the light blocking particles 281 may be densely overlapped with the black matrix BM of the display panel 400 so as not to overlap the plurality of light emitting regions OA. As such, the light path control film 200 is combined with the display panel 400 to minimize the area where the light blocking particles 281 are concentrated and the area where the plurality of light emitting areas OA of the display panel 400 overlap. The aperture ratio of the display panel 400 may be maximized.

The display device may further include a display driving circuit unit for driving the display panel 400. The display driving circuit unit may include a plurality of circuit films, a plurality of driving integrated circuits, a printed circuit board, and a timing controller.

Each of the plurality of circuit films may be attached to the pad portion of the display panel 400 and the printed circuit board.

Each of the plurality of drive integrated circuits may be individually mounted to each of the plurality of circuit films.

According to an example, one of the plurality of driving integrated circuits may provide a driving voltage Vd to the driving electrode pattern 220 while providing a data voltage to the plurality of thin film transistors. Therefore, the optical path control film 200 does not require a separate driving integrated circuit, and the driving voltage Vd is applied to the driving electrode pattern 220 through the driving integrated circuit of the display driving circuit unit for driving the display panel 400. Can be authorized.

The printed circuit board may support the timing controller and transmit power and signals between the components of the display driving circuit portion.

The timing controller may be mounted on a printed circuit board and receive image data and a timing synchronization signal provided from a display driving system through a user connector provided on the printed circuit board. The timing controller generates a data control signal and a scan control signal based on the timing synchronization signal, and controls driving timing of each of the driving integrated circuits through the data control signal, and driving timing of the scan driving circuit unit through the scan control signal. Can be controlled.

17 is a cross-sectional view illustrating a display device according to a sixth exemplary embodiment of the present application. In the sixth embodiment of FIG. 17, the display device includes a display panel 500 and a backlight unit 600, and the same configuration as that described above will be briefly described or omitted.

Referring to FIG. 17, the display panel 500 includes a lower substrate 510, a first electrode 520, a liquid crystal layer 530, a black matrix 540, a plurality of color filters 550, and a second electrode ( 560, and an upper substrate 570.

The lower substrate 510 is a base substrate and may be a flexible substrate. For example, the lower substrate 510 may include a transparent polyimide material. The lower substrate 510 may include a plurality of thin film transistors that adjust light transmittance of each of the plurality of pixels.

The first electrode 220 may be connected to each of the plurality of thin film transistors that control the light transmittance of each of the plurality of pixels on the lower substrate 510.

The second electrode 560 may be integrally formed on the upper substrate 570. The plurality of color filters 550 is formed to correspond to each of the plurality of pixels on the upper substrate 570, and the black matrix 540 is disposed between the plurality of color filters 550 on the upper substrate 570. Can be. The upper substrate 570 having the black matrix 540 and the plurality of color filters 550 may be bonded to the lower substrate 510 having the plurality of thin film transistors and the first electrode 220. The liquid crystal layer 530 may be injected between the substrate 510 and the upper substrate 570. That is, the liquid crystal layer 530 may be interposed between the lower substrate 510 and the upper substrate 570.

The liquid crystal layer 530 may be arranged according to a vertical electric field formed between the first electrode 220 and the second electrode 560, and the display panel 500 may be arranged by the backlight unit by arranging the liquid crystal layer 530. By adjusting the transmittance of light irradiated at 600, an image may be displayed.

The display device may further include a display driving circuit unit for driving the display panel 500. The display driving circuit unit may include a plurality of circuit films, a plurality of driving integrated circuits, a printed circuit board, and a timing controller.

Each of the plurality of circuit films may be attached to the pad portion of the display panel 500 and the printed circuit board.

Each of the plurality of drive integrated circuits may be individually mounted to each of the plurality of circuit films.

According to an example, one of the plurality of driving integrated circuits may provide a driving voltage Vd to the driving electrode pattern 220 while providing a data voltage to the plurality of thin film transistors. Therefore, the optical path control film 200 does not require a separate driving integrated circuit, and the driving voltage Vd is applied to the driving electrode pattern 220 through the driving integrated circuit of the display driving circuit unit for driving the display panel 500. Can be authorized.

The printed circuit board may support the timing controller and transmit power and signals between the components of the display driving circuit portion.

The timing controller may be mounted on a printed circuit board and receive image data and a timing synchronization signal provided from a display driving system through a user connector provided on the printed circuit board. The timing controller generates a data control signal and a scan control signal based on the timing synchronization signal, and controls driving timing of each of the driving integrated circuits through the data control signal, and driving timing of the scan driving circuit unit through the scan control signal. Can be controlled.

The backlight unit 600 may include a light source 610, a light guide plate 620, a reflective sheet 630, a first adhesive layer 630, a plurality of optical sheets 650, and a second adhesive layer 660.

The light source unit 610 may be disposed at a side surface of the light guide plate 620 to irradiate light toward the light guide plate 620. The light source unit 610 may further include a printed circuit board that provides a power source voltage to the plurality of light sources and the plurality of light sources, and provides a driving voltage Vd to the driving electrode pattern 220. The printed circuit board may provide a power supply voltage to the plurality of light sources and provide a driving voltage Vd to the driving electrode pattern 220. Therefore, the optical path control film 200 does not require a separate driving integrated circuit, and the driving voltage Vd may be applied to the driving electrode pattern 220 through a printed circuit board for driving the backlight unit 600. have.

The light guide plate 620 may emit light provided from the light source 610 toward the display panel 500.

The reflective sheet 630 may be disposed on the other side of the light guide plate 620 opposite to one side facing the display panel 500, thereby preventing light from leaking to the rear surface of the display device and improving luminance uniformity.

The plurality of optical sheets 650 may be disposed on one side of the light guide plate 620 through the first adhesive layer 640 to improve luminance characteristics of light emitted from the light guide plate 620.

The backlight unit 600 may be attached to the light path control film 200 through the second adhesive layer 660.

Therefore, the display device according to the present application can control the optical viewing angle by scattering the light blocking particles in the entirety of the plurality of slits, and densifying the light blocking particles in specific portions of the plurality of slits to improve the aperture ratio of the display panel and to improve visibility. It can be secured. In addition, the display device condenses the light blocking particles to a specific portion of the plurality of slits in the first mode to implement a wide viewing angle, thereby reducing outdoor power while ensuring outdoor visibility, and in the second mode, the light blocking particles may be disposed in the entire plurality of slits. It is possible to control the viewing angle by implementing a narrow viewing angle scattered in the.

FIG. 18 is a plan view illustrating a display device according to a seventh exemplary embodiment of the present application, and FIG. 19 is a cross-sectional view taken along the line IV-IV 'of the display device shown in FIG. 18. FIG. 20 is a view illustrating a state in which a driving voltage is applied to each of the lower driving electrode pattern and the upper driving electrode pattern in the display device of FIG. 18, and FIG. 21 is a cross-sectional view taken along the line V-V ′ of FIG. 20. .

18 and 19 show light blocking particles 761 and 861 interspersed with the entire area of each of the plurality of lower slits 750 and the plurality of upper slits 850. Light blocking particles 761 and 861 are densely packed in the overlapping region of the lower driving electrode pattern 720 and the plurality of lower slits 750, and the overlapping region of the upper driving electrode pattern 820 and the plurality of upper slits 850. Indicates. 22 is a perspective view illustrating the first and second light path control layers illustrated in FIG. 19.

18 to 22, the display device includes a display panel 100, a display driving circuit unit 300, and optical path control films 700 and 800.

The display panel 100 may include a display area AA and a non-display area NA. The display area AA is an area where an image is displayed and may correspond to a central portion of the display panel 100. The non-display area NA is an area where an image is not displayed and may correspond to an edge portion of the display panel 100 surrounding the display area AA. For example, the display panel 100 may be any type of display panel such as a liquid crystal display panel, an organic light emitting diode (OLED) display panel, and an electroluminescent display panel.

The display driving circuit unit 300 may include a plurality of circuit films 310, a plurality of driving integrated circuits 330, a printed circuit board 350, and a timing controller 370. Here, since the display driving circuit unit 300 of FIG. 18 is the same as the display driving circuit unit illustrated in FIG. 1, a detailed description thereof will be omitted.

The light path control films 700 and 800 may be disposed on the front surface or the rear surface of the display panel 100. In addition, the light path control films 700 and 800 may be disposed to overlap the display area AA of the display panel 100. According to an example, the light path control films 700 and 800 may be attached to the display panel 100 through an adhesive member, or may be provided integrally with the display panel 100.

The light path control film includes a first light path control layer 700 and a second light path control layer 800.

The first optical path control layer 700 may include a first base film 710, a lower driving electrode pattern 720, a plurality of first protruding patterns 740, a plurality of lower slits 750, and an electrophoretic solution 760. ) May be included.

The first base film 710 may support the lower driving electrode pattern 720. For example, the first base film 710 may be made of a transparent material, and may have a top and bottom surfaces having a flat structure.

The lower driving electrode pattern 720 may be patterned on the first base film 710. For example, the lower driving electrode pattern 720 may be formed of a transparent electrode such as ITO, but is not necessarily limited thereto. The lower driving electrode pattern 720 may face the common electrode 910 with a plurality of lower slits 750 interposed therebetween, and the lower driving electrode pattern 720 may have a driving voltage from the display driving circuit unit 300. Vd) may be authorized.

The lower driving electrode pattern 720 may be disposed to cross the length direction of the plurality of lower slits 750. According to an example, the lower driving electrode pattern 720 may be disposed to minimize an area overlapping the plurality of lower slits 750. For example, when each of the plurality of lower slits 750 has a line shape extending along the first direction X, the lower driving electrode pattern 720 may cross the first direction X in the second direction Y. Can be extended along Here, the first direction X may correspond to a horizontal direction on the display panel 100, and the second direction Y may correspond to a vertical direction on the display panel 100, but is not limited thereto. As described above, the arrangement structure of the lower driving electrode pattern 720 is changed according to the arrangement structure of the plurality of lower slits 750, so that the area of the lower driving electrode pattern 720 overlapping the plurality of lower slits 750 is minimized. Can be.

The plurality of first protruding patterns 740 may be attached to one surface of the first common electrode 911 through the third adhesive layer 930. In detail, the plurality of first protruding patterns 740 are formed on the first base film 710 and the lower driving electrode pattern 720, and then the first common electrodes 911 formed on the third base film 920. It can be attached to. As such, when the plurality of first protruding patterns 740 are attached to the first common electrode 911 through the third adhesive layer 930, the plurality of first protruding patterns 740 and the third adhesive layer 930 are provided. A plurality of lower slits 750 may be formed to be surrounded by the lower slits 750. Accordingly, each of the lower slits 750 may correspond to a recess provided between each of the plurality of first protruding patterns 740 adjacent to each other.

According to an example, the plurality of first protruding patterns 740 are coated with a predetermined material layer on the first base film 710 and the lower driving electrode pattern 720, and then a predetermined material is formed using a stamper. It can be formed through a process of pressing the layer. Here, the predetermined material layer may correspond to UV resin or photoresist. That is, the stamper may form a plurality of first protrusion patterns 740, and at the same time, form a plurality of lower slits 750 corresponding to the plurality of first protrusion patterns 740. In addition, the stamper may determine the shapes of the plurality of lower slits 750 corresponding to the plurality of first protrusion patterns 740.

The plurality of lower slits 750 are surrounded by the plurality of first protrusion patterns 740 and the third adhesive layer 930, and each of the plurality of lower slits 750 is disposed between the plurality of first protrusion patterns 740 adjacent to each other. It may correspond to the recess provided in each. As described above, each of the plurality of lower slits 750 may have a line shape extending along the first direction X, but is not limited thereto and may be disposed in various forms.

The electrophoretic solution 760 may be provided by mixing the light blocking particles 761 and the transparent fluid 763. The electrophoretic solution 760 includes a plurality of lower slits surrounded by the first base film 710 and the third base film 920 and surrounded by the plurality of first protruding patterns 740 and the third adhesive layer 930. Once the 750 is formed, it may be injected into the plurality of lower slits 750.

The light blocking particle 761 may include an electrophoretic material that moves in the direction of the lower driving electrode pattern 720 when the driving voltage Vd is applied to the lower driving electrode pattern 720. That is, the light blocking particles 761 may have light blocking (or light absorption) characteristics while having electrophoretic characteristics. According to an example, the light blocking particles 761 may block (or absorb) a portion of the light L emitted from the display panel 100. For example, the light blocking particles 761 may be made of carbon black having excellent light absorption and high electrical conductivity, but is not limited thereto. The transparent fluid 763 can transmit light, flow within the plurality of lower slits 750, and support movement of the light blocking particles 761.

The second light path control layer 800 may include a second base film 810, an upper driving electrode pattern 820, a plurality of second protruding patterns 840, a plurality of upper slits 850, and an electrophoretic solution 860. ) May be included.

The second base film 810 may support the upper driving electrode pattern 820. For example, the second base film 810 may be made of a transparent material, and may have a flat top and bottom surfaces.

The upper driving electrode pattern 820 may be patterned on the second base film 810. For example, the upper driving electrode pattern 820 may be formed of a transparent electrode such as ITO, but is not necessarily limited thereto. In addition, the upper driving electrode pattern 820 may face the common electrode 910 with a plurality of upper slits 850 interposed therebetween, and the upper driving electrode pattern 820 may have a driving voltage from the display driving circuit unit 300. Vd) may be authorized. According to an example, the upper driving electrode pattern 820 may be driven independently of the lower driving electrode pattern 720.

The upper driving electrode pattern 820 may be disposed to cross the length direction of the plurality of upper slits 850. According to an example, the upper driving electrode pattern 820 may be disposed to minimize an area overlapping the plurality of upper slits 850. The upper driving electrode pattern 820 may be disposed on the lower driving electrode pattern 720 and the display panel 100 so as to overlap each other. For example, when each of the plurality of upper slits 850 has a line shape extending along the first direction X, the upper driving electrode pattern 820 crosses the first direction X in the second direction Y. Can be extended along As such, the arrangement structure of the upper driving electrode pattern 820 is changed according to the arrangement structure of the plurality of upper slits 850, so that the area of the upper driving electrode pattern 820 overlapping with the plurality of upper slits 850 is minimized. Can be.

The plurality of second protruding patterns 840 may be attached to one surface of the second common electrode 913 through the fourth adhesive layer 940. In detail, the plurality of second protruding patterns 840 are formed on the second base film 810 and the upper driving electrode pattern 820, and then the second common electrodes 913 formed on the third base film 920. It can be attached to. As such, when the plurality of second protrusion patterns 840 are attached to the second common electrode 913 via the fourth adhesive layer 940, the plurality of second protrusion patterns 840 and the fourth adhesive layer 940 are attached. A plurality of upper slits 850 may be formed to be surrounded by. Accordingly, each of the plurality of upper slits 850 may correspond to a recess provided between each of the plurality of second protruding patterns 840 adjacent to each other.

According to an example, the plurality of second protruding patterns 840 are coated with a predetermined material layer on the second base film 810 and the upper driving electrode pattern 820, and then a predetermined material is formed using a stamper. It can be formed through a process of pressing the layer. Here, the predetermined material layer may correspond to UV resin or photoresist. That is, the stamper may form a plurality of second protrusion patterns 840 and at the same time, may form a plurality of upper slits 850 corresponding to the plurality of second protrusion patterns 840. In addition, the stamper may determine the shape of the plurality of upper slits 850 corresponding to the plurality of second protruding patterns 840.

The plurality of upper slits 850 is surrounded by the plurality of second protruding patterns 840 and the fourth adhesive layer 940, and each of the plurality of upper slits 850 is disposed between the plurality of second protruding patterns 840 adjacent to each other. It may correspond to the recess provided in each. As described above, each of the plurality of upper slits 850 may have a line shape extending along the first direction X, but is not limited thereto and may be arranged in various forms.

The electrophoretic solution 860 may be provided by mixing the light blocking particles 861 and the transparent fluid 863. In the electrophoretic solution 860, a plurality of upper slits surrounded by the second base film 810 and the third base film 920 are surrounded by the plurality of second protruding patterns 840 and the fourth adhesive layer 940 ( Once the 850 is formed, it may be injected into the plurality of upper slits 850.

The light blocking particle 861 may include an electrophoretic material that moves in the direction of the upper driving electrode pattern 820 when the driving voltage Vd is applied to the upper driving electrode pattern 820. That is, the light blocking particles 861 may have light blocking (or light absorption) characteristics while having electrophoretic characteristics. According to an example, the light blocking particles 861 may block (or absorb) a portion of the light L emitted from the display panel 100. For example, the light blocking particles 861 may be made of carbon black having excellent light absorption and high electrical conductivity, but is not necessarily limited thereto. The transparent fluid 863 may transmit light, flow within the plurality of upper slits 850, and may support movement of the light blocking particles 861.

According to an example, the plurality of lower slits 750 and the plurality of upper slits 850 are disposed to overlap each other on the display panel 100, thereby providing light efficiency of the first and second light path control layers 700 and 800. This can be improved. For example, the light efficiency may correspond to a ratio at which light emitted from the display panel 100 passes through the first and second optical path control layers 700 and 800. Here, the electrophoretic liquids 760 and 860 of each of the first and second optical path control layers 700 and 800 may absorb some of the light emitted from the display panel 100. If the driving voltage Vd is not applied to each of the lower driving electrode pattern 720 and the upper driving electrode pattern 820, the light blocking particles 761 and 861 may include the plurality of lower slits 750 and the plurality of upper slits. It can be interspersed within 850. That is, the light blocking particles 761 and 861 may be scattered in the plurality of lower slits 750 and the plurality of upper slits 850 to absorb a portion of the light emitted from the display panel 100. When the plurality of lower slits 750 and the plurality of upper slits 850 do not overlap each other on the display panel 100, an area where the light blocking particles 761 and 861 overlap with the display panel 100 increases. As a result, aperture ratios of the first and second optical path control layers 700 and 800 may be reduced.

Therefore, when light emitted from the display panel 100 passes through the first and second optical path control layers 700 and 800, an area where the light blocking particles 761 and 861 overlap with the display panel 100 may be formed. As the size decreases, the aperture ratios of the first and second light path control layers 700 and 800 may increase, thereby improving light efficiency. As a result, the plurality of lower slits 750 and the plurality of upper slits 850 are disposed to overlap each other on the display panel 100, thereby driving voltages on the lower driving electrode pattern 720 and the upper driving electrode pattern 820, respectively. The aperture ratio and the light efficiency of the first and second light path control layers 700 and 800 are minimized by minimizing a region where the light blocking particles 761 and 861 overlap with the display panel 100 in the state where (Vd) is not applied. Can be increased.

In example embodiments, an intersection area of the lower driving electrode pattern 720 and the plurality of lower slits 750 and an intersection area of the upper driving electrode pattern 820 and the plurality of upper slits 850 may be formed on the display panel 100. By being disposed to overlap each other, the light efficiency of the first and second light path control layers 700 and 800 may be improved. For example, when the driving voltage Vd is applied to the lower driving electrode pattern 720, the light blocking particles 761 may be densely located at the intersection of the lower driving electrode pattern 720 and the plurality of lower slits 750. When the driving voltage Vd is applied to the upper driving electrode pattern 820, the light blocking particles 861 may be densely located at the intersections of the upper driving electrode pattern 820 and the plurality of upper slits 850. That is, the light blocking particles 761 and 861 may be formed at the intersection of the lower driving electrode pattern 720 and the plurality of lower slits 750 and the intersection of the upper driving electrode pattern 820 and the plurality of upper slits 850. The light may be concentrated to absorb a portion of the light emitted from the display panel 100. The cross region of the lower driving electrode pattern 720 and the plurality of lower slits 750 and the cross region of the upper driving electrode pattern 820 and the plurality of upper slits 850 do not overlap each other on the display panel 100. If not, the area in which the light blocking particles 761 and 861 overlap with the display panel 100 may increase, thereby decreasing the aperture ratio of the first and second light path control layers 700 and 800.

Therefore, an intersection area of the lower driving electrode pattern 720 and the plurality of lower slits 750 and an intersection area of the upper driving electrode pattern 820 and the plurality of upper slits 850 overlap each other on the display panel 100. As a result, the light blocking particles 761 and 861 overlap the display panel 100 while the driving voltage Vd is applied to each of the lower driving electrode pattern 720 and the upper driving electrode pattern 820. Thus, the aperture ratio and the light efficiency of the first and second optical path control layers 700 and 800 may be increased.

The common electrode 910 may be disposed between the plurality of first protrusion patterns 740 and the plurality of second protrusion patterns 840. The common electrode 910 may be disposed between the plurality of lower slits 750 and the plurality of upper slits 850. In detail, the common electrode 910 may face the lower driving electrode pattern 720 with the plurality of lower slits 750 interposed therebetween, and the common electrode 910 may have the plurality of upper slits 850 interposed therebetween. The upper driving electrode pattern 820 may be opposite.

According to an example, the common electrode 910 is the first common electrode 911 disposed on one surface of the third base film 920 and the second common electrode 913 disposed on the other surface of the third base film 920. It may include. The first and second common electrodes 911 and 913 may be formed of a transparent electrode such as ITO, but are not necessarily limited thereto. Each of the first and second common electrodes 911 and 913 is formed of one electrode covering the entire surface of the third base film 920 or the lower driving electrode pattern 720 and the upper driving electrode pattern 820. It may be formed corresponding to each. In addition, the first common electrode 911 may face the lower driving electrode pattern 720 with the plurality of first protrusion patterns 740 and the plurality of lower slits 750 interposed therebetween, and the second common electrode 913. ) May face the upper driving electrode pattern 820 with the plurality of second protruding patterns 840 and the plurality of upper slits 850 interposed therebetween. For example, a low potential voltage lower than the driving voltage Vd of the first and second common electrodes 911 and 913 may be applied or grounded.

The third base film 920 may be disposed between the first and second light path control layers 700 and 800 to support each of the first and second light path control layers 700 and 800. One surface of the third base film 920 may support the first common electrode 911 before being bonded to the first base film 710, and the other surface of the third base film 920 may be a second base film ( Before bonding with 810, the second common electrode 913 may be supported. For example, the third base film 920 may be made of a transparent material, and may have a top and bottom surfaces having a flat structure.

18 and 19, when the driving voltage Vd is not applied to the lower driving electrode pattern 720, the light blocking particles 761 may be interspersed over the entire areas of the plurality of lower slits 750, and light blocking may be performed. Particles 861 may be scattered over the entire regions of the plurality of upper slits 850 when the driving voltage Vd is not applied to the upper driving electrode patterns 820. Specifically, when the light blocking particles 761 and 861 are scattered over the entire areas of the plurality of lower slits 750 and the plurality of upper slits 850, the light blocking particles 761 and 861 are emitted from the display panel 100. A part of the light L may be blocked. That is, the light blocking particles 761 and 861 scattered over the entire areas of the plurality of lower slits 750 and the plurality of upper slits 850 may serve as light blocking partitions. For example, the light L emitted toward the front of the display panel 100 is not blocked by the light blocking particles 761, and is a direction except for the front of the display panel 100 (for example, a front diagonal direction). Light (L) emitted to may be blocked by the light blocking particles (761, 861). That is, the first light path control layer 700 scatters the light blocking particles 761 in the entire region of the plurality of lower slits 750, and the second light path control layer 800 includes the plurality of upper slits 850. The light blocking particles 861 are interspersed over the entire region of the light, thereby controlling the optical viewing angle of the display device. According to an example, the first light path control layer 700 is interspersed with the light blocking particles 761 in the entire area of the plurality of lower slits 750 extending along the first direction X, and the second light path The control layer 800 may scatter the light blocking particles 861 in the entire area of the plurality of upper slits 850 extending along the first direction X to control the side viewing angle of the display device in the vertical direction. have.

According to an example, the display device includes the first and second light path control layers 700 and 800 to have a higher light efficiency or a higher shielding property than a display device including one light path control layer. Can be. Specifically, the display device according to the present application includes a plurality of lower slits 750 and a plurality of upper slits 850 overlapping each other, and thus have the same level of shielding characteristics as a display device having one light path control layer. In addition, the display device may have higher light efficiency than the display device having one light path control layer. Here, the light efficiency may correspond to the ratio of the light emitted from the display panel 100 to pass through the optical path control film. Further, although the pitches of the plurality of lower slits 750 and the plurality of upper slits 850 are greater than the pitches of the plurality of slits of one optical path control layer, the plurality of lower slits 750 and the plurality of upper slits 850 Since the height of) is higher than the height of the plurality of slits in one light path control layer, it may have the same level of shielding properties. Here, the pitch of the plurality of slits corresponds to the distance between the centers of each of the two adjacent slits. For example, in order for a display device including one light path control layer to have the same level of shielding characteristics as the display device according to the present application, the pitches of the plurality of lower slits 750 or the plurality of upper slits 850 may be Pitch) or a plurality of slits having the same pitch. When the pitches of the plurality of slits decrease, the overlapping area of the plurality of slits and the display panel increases, thereby reducing the light efficiency of the display device. Therefore, the display device according to the present application may have higher light efficiency than the display device including one light path control layer having the same level of shielding characteristics.

In addition, the display device according to the present application includes a plurality of lower slits 750 and a plurality of upper slits 850 to block light that is not blocked by the plurality of lower slits 750 to the plurality of upper slits 850. Therefore, the display device may have a higher shielding property than a display device including one light path control layer. Therefore, the display device according to the present application may have a higher shielding property than the display device including one light path control layer having the same level of light efficiency.

As shown in FIGS. 20 and 21, when the driving voltage Vd is applied to the lower driving electrode pattern 720, the light blocking particles 761 overlap the lower driving electrode pattern 720 and the plurality of lower slits 750. (Or intersection area)

In addition, when the driving voltage Vd is applied to the upper driving electrode pattern 820, the light blocking particles 861 may overlap the overlapping regions (or intersecting regions) of the upper driving electrode pattern 820 and the plurality of upper slits 850. Can be concentrated. For example, regions in which the light blocking particles 761 and 861 are concentrated may be spaced apart from each other in the first direction X and the second direction Y on the display panel 100. In addition, the transparent fluids 763 and 863 may not cross the lower driving electrode pattern 720 of the lower slits 750 and the upper driving electrode pattern 820 of the upper slits 850. May remain in the area. Therefore, the areas where the light blocking particles 761 and 861 are densely spaced apart from each other in the first direction X and the second direction Y on the display panel 100 may maximize the aperture ratio of the display device to improve light efficiency. You can.

According to an example, the lower driving electrode pattern 720 may receive the driving voltage Vd from the driving integrated circuit 330, and the light blocking particles 761 may include the lower driving electrode pattern 720 and the plurality of lower slits. It may be concentrated at the shortest distance between the 750. The upper driving electrode pattern 820 may receive the driving voltage Vd from the driving integrated circuit 330, and the light blocking particles 861 may include the upper driving electrode pattern 820 and the plurality of upper slits 850. It can be concentrated at the shortest distance between them. In addition, when the driving voltage Vd is applied to each of the lower driving electrode pattern 720 and the upper driving electrode pattern 820, the light blocking particles 761 and the plurality of upper slits 850 in the plurality of lower slits 750 are provided. Light blocking particles 861 in the interior may move in opposite directions to each other. When the driving voltage Vd is applied to the lower driving electrode pattern 720, the light blocking particles 761 in the plurality of lower slits 750 move in a direction away from the second optical path control layer 800, and the driving is performed. When the voltage Vd is applied to the upper driving electrode pattern 820, the light blocking particles 861 in the plurality of upper slits 850 may move in a direction away from the first optical path control layer 700. That is, the light blocking particles 761 may move to an area where the lower driving electrode pattern 720 and the plurality of lower slits 750 overlap on the display panel 100. In addition, the light blocking particles 861 may move to an area where the upper driving electrode pattern 820 and the plurality of upper slits 850 overlap on the display panel 100.

When the driving voltage Vd is applied to the lower driving electrode pattern 720 or the upper driving electrode pattern 820, the light blocking particles 761 and 861 may be formed in the first direction X and the second direction Y, respectively. The movement may be closer to the lower driving electrode pattern 720 or the upper driving electrode pattern 820 based on the third vertical direction Z. FIG. That is, the light blocking particles 761 and 861 may be formed on the lower driving electrode pattern 720 or the upper driving electrode pattern 820 based on the thickness direction Z of the first and second optical path control layers 700 and 800. You can move it closer. In addition, the light blocking particles 761 and 861 may have a shortest distance between the lower driving electrode pattern 720 and the plurality of lower slits 750 and a shortest distance between the upper driving electrode pattern 820 and the plurality of upper slits 850. When concentrated at a distance, only the transparent fluids 763 and 863 may remain in the remaining regions of the plurality of lower slits 750 and the plurality of upper slits 850. In detail, the transparent fluids 763 and 863 do not overlap the region of the lower driving electrode pattern 720 and the plurality of lower slits 750, and the upper driving electrode pattern 820 and the plurality of upper slits 850. The light blocking particles 761 may be disposed in an overlapping area of the lower driving electrode pattern 720 and the plurality of lower slits 750 and an overlapping area of the upper driving electrode pattern 820 and the plurality of upper slits 850. 861 may be disposed in a portion other than a dense portion.

As such, when the light blocking particles 761 are concentrated in a portion adjacent to the lower driving electrode pattern 720 among the overlapping regions of the lower driving electrode pattern 720 and the plurality of lower slits 750, the first light path control layer ( The light 700 may transmit the light L emitted from the display panel 100.

In addition, when the light blocking particles 861 are concentrated in a portion adjacent to the upper driving electrode pattern 820 among overlapping regions of the upper driving electrode pattern 820 and the plurality of upper slits 850, the second optical path control layer 800 ) May transmit light transmitted through the first optical path control layer 700. For example, the light L emitted in the front and front diagonal directions of the display panel 100 is not blocked by the light blocking particles 761 and 861, and the first and second light path control layers 700 and 800. ), The aperture ratio of the display panel 100 may be improved.

Therefore, the first and second optical path control layers 700 and 800 determine whether the light blocking particles 761 and 861 are densely packed according to whether the driving voltage Vd is applied, thereby selectively controlling the optical viewing angle, The aperture ratio of the display panel can be improved. As a result, the first and second light path control layers 700 and 800 determine whether the light blocking particles 761 and 861 are concentrated, thereby ensuring outdoor visibility, reducing power consumption, and thus reducing the lifetime of the display device. Can be extended.

According to an example, the first and second light path control layers 700 and 800 may move the light blocking particles 761 and 861 between the lower driving electrode pattern 720 and the plurality of lower slits 750 in the first mode. The light may be concentrated at the shortest distance or the shortest distance between the upper driving electrode pattern 820 and the plurality of upper slits 850 to transmit light emitted from the display panel 100.

In the second mode, the light blocking particles 761 and 861 may be interspersed over the entire areas of the plurality of lower slits 750 and the plurality of upper slits 850 to block a part of the light emitted from the display panel 100. . Here, the first and second optical path control layers 700 and 800 may control the wide viewing angle through the second mode, and improve the aperture ratio of the display panel 100 over the second mode through the first mode. Can be. For example, the first mode may correspond to a wide viewing angle mode or a daytime mode, and the second mode may correspond to a narrow viewing angle mode or a night mode, but is not limited thereto. As such, the first and second optical path control layers 700 and 800 improve the aperture ratio of the display panel 100 in the first mode, thereby realizing high brightness without increasing power consumption for driving the display panel 100. Can be. In addition, the first and second optical path control layers 700 and 800 control the wide viewing angle in the second mode so that the image of the display panel 100 is different from the display panel 100. Reflected glass) can be prevented. As a result, the first and second optical path control layers 700 and 800 may select one of the first mode and the second mode, thereby improving the aperture ratio of the display panel or controlling the optical viewing angle.

FIG. 23 is a plan view illustrating a display device according to an eighth embodiment of the present application, and FIG. 24 is a cross-sectional view taken along the line V-V ′ in the display device shown in FIG. 23. Here, the optical path control film of FIGS. 23 and 24 does not include the third base film 920, and the configuration of the optical path control film and the common electrode 910 of FIGS. 18 to 22 is different. The same configuration as one configuration will be briefly described or omitted.

23 and 24, the first optical path control layer 700 may include a first base film 710, a lower driving electrode pattern 720, a plurality of first protrusion patterns 740, and a plurality of lower slits ( 750, and electrophoretic solution 760.

The first base film 710 may support the lower driving electrode pattern 720.

The lower driving electrode pattern 720 may be patterned on the first base film 710. The lower driving electrode pattern 720 may face the common electrode 910 with a plurality of lower slits 750 interposed therebetween, and the lower driving electrode pattern 720 may have a driving voltage from the display driving circuit unit 300. Vd) may be authorized.

The plurality of first protruding patterns 740 may be attached to one surface of the common electrode 910 through the third adhesive layer 930. Specifically, the plurality of first protruding patterns 740 are formed on the first base film 710 and the lower driving electrode pattern 720, and then one surface of the common electrode 910 via the third adhesive layer 930. It can be attached to. As such, when the plurality of first protrusion patterns 740 are attached to the common electrode 910, a plurality of lower slits 750 surrounded by the plurality of first protrusion patterns 740 and the third adhesive layer 930 are formed. Can be. Accordingly, each of the lower slits 750 may correspond to a recess provided between each of the plurality of first protruding patterns 740 adjacent to each other.

The plurality of lower slits 750 are surrounded by the plurality of first protrusion patterns 740 and the third adhesive layer 930, and each of the plurality of lower slits 750 is disposed between the plurality of first protrusion patterns 740 adjacent to each other. It may correspond to the recess provided in each.

The electrophoretic solution 760 may be provided by mixing the light blocking particles 761 and the transparent fluid 763. The electrophoretic solution 760 includes a plurality of lower slits surrounded by the first base film 710 and the second base film 810 and surrounded by the plurality of first protruding patterns 740 and the third adhesive layer 930. Once the 750 is formed, it may be injected into the plurality of lower slits 750.

The second light path control layer 800 may include a second base film 810, an upper driving electrode pattern 820, a plurality of second protruding patterns 840, a plurality of upper slits 850, and an electrophoretic solution 860. ) May be included.

The second base film 810 may support the upper driving electrode pattern 820.

The upper driving electrode pattern 820 may be patterned on the second base film 810. In addition, the upper driving electrode pattern 820 may face the common electrode 910 with a plurality of upper slits 850 interposed therebetween, and the upper driving electrode pattern 820 may have a driving voltage from the display driving circuit unit 300. Vd) may be authorized.

The plurality of second protruding patterns 840 may be attached to the other surface of the common electrode 910 through the fourth adhesive layer 940. That is, the common electrode 910 is formed through the third and fourth adhesive layers 930 and 940 while the first base film 710 and the second base film 820 are bonded to each other. 740 may be disposed between the plurality of second protrusion patterns 840. Specifically, the plurality of second protruding patterns 840 are formed on the second base film 810 and the upper driving electrode pattern 820, and then the other surface of the common electrode 910 via the fourth adhesive layer 940. It can be attached to. As such, when the plurality of second protrusion patterns 840 are attached to the common electrode 910, the plurality of upper slits 850 surrounded by the plurality of second protrusion patterns 840 and the fourth adhesive layer 940 are formed. Can be. Accordingly, each of the plurality of upper slits 850 may correspond to a recess provided between each of the plurality of second protruding patterns 840 adjacent to each other.

The plurality of upper slits 850 is surrounded by the plurality of second protruding patterns 840 and the fourth adhesive layer 940, and each of the plurality of upper slits 850 is disposed between the plurality of second protruding patterns 840 adjacent to each other. It may correspond to the recess provided in each.

The electrophoretic solution 860 may be provided by mixing the light blocking particles 861 and the transparent fluid 863. In the electrophoretic solution 860, a plurality of upper slits surrounded by the second base film 810 and the first base film 710 and surrounded by the plurality of second protruding patterns 840 and the fourth adhesive layer 940 ( Once the 850 is formed, it may be injected into the plurality of upper slits 850.

FIG. 25 is a plan view illustrating a display device according to a ninth embodiment of the present application, and FIG. 26 is a cross-sectional view taken along the line VI-VI ′ in the display device shown in FIG. 25. Here, the display device according to the ninth embodiment shown in FIGS. 25 and 26 is different from the arrangement of the display device of the eighth embodiment shown in FIGS. 23 and 24 and the second optical path control layer 800. The same configuration as that described above will be briefly described or omitted.

25 and 26, the first optical path control layer 700 may include a first base film 710, a lower driving electrode pattern 720, a plurality of first protrusion patterns 740, and a plurality of lower slits ( 750, and electrophoretic solution 760.

The first base film 710 may support the lower driving electrode pattern 720.

The lower driving electrode pattern 720 may be patterned on the first base film 710. The lower driving electrode pattern 720 may face the common electrode 910 with a plurality of lower slits 750 interposed therebetween, and the lower driving electrode pattern 720 may have a driving voltage from the display driving circuit unit 300. Vd) may be authorized.

The plurality of first protruding patterns 740 may be attached to one surface of the common electrode 910 through the third adhesive layer 930. Specifically, the plurality of first protruding patterns 740 are formed on the first base film 710 and the lower driving electrode pattern 720, and then one surface of the common electrode 910 via the third adhesive layer 930. It can be attached to.

The plurality of lower slits 750 are surrounded by the plurality of first protrusion patterns 740 and the third adhesive layer 930, and each of the plurality of lower slits 750 is disposed between the plurality of first protrusion patterns 740 adjacent to each other. It may correspond to the recess provided in each.

The electrophoretic solution 760 may be provided by mixing the light blocking particles 761 and the transparent fluid 763. The electrophoretic solution 760 includes a plurality of lower slits surrounded by the first base film 710 and the second base film 810 and surrounded by the plurality of first protruding patterns 740 and the third adhesive layer 930. Once the 750 is formed, it may be injected into the plurality of lower slits 750.

The second light path control layer 800 may include a second base film 810, an upper driving electrode pattern 820, a plurality of second protruding patterns 840, a plurality of upper slits 850, and an electrophoretic solution 860. ) May be included.

The second base film 810 may support the upper driving electrode pattern 820.

The upper driving electrode pattern 820 may be patterned on the second base film 810. In addition, the upper driving electrode pattern 820 may face the common electrode 910 with a plurality of upper slits 850 interposed therebetween, and the upper driving electrode pattern 820 may have a driving voltage from the display driving circuit unit 300. Vd) may be authorized.

The upper driving electrode pattern 820 may be disposed to cross the length direction of the plurality of upper slits 850. According to an example, the upper driving electrode pattern 820 may be disposed to minimize an area overlapping the plurality of upper slits 850. The upper driving electrode pattern 820 may be disposed to cross each other on the lower driving electrode pattern 720 and the display panel 100. For example, when each of the plurality of upper slits 850 has a line shape extending along the second direction Y, the upper driving electrode pattern 820 crosses the second direction Y in the second direction X. Can be extended along As such, the arrangement structure of the upper driving electrode pattern 820 is changed according to the arrangement structure of the plurality of upper slits 850, so that the area of the upper driving electrode pattern 820 overlapping with the plurality of upper slits 850 is minimized. Can be.

The plurality of second protruding patterns 840 may be attached to the other surface of the common electrode 910 through the fourth adhesive layer 940. That is, the common electrode 910 is formed through the third and fourth adhesive layers 930 and 940 while the first base film 710 and the second base film 820 are bonded to each other. 740 may be disposed between the plurality of second protrusion patterns 840. Specifically, the plurality of second protruding patterns 840 are formed on the second base film 810 and the upper driving electrode pattern 820, and then the other surface of the common electrode 910 via the fourth adhesive layer 940. It can be attached to.

The plurality of upper slits 850 is surrounded by the plurality of second protruding patterns 840 and the fourth adhesive layer 940, and each of the plurality of upper slits 850 is disposed between the plurality of second protruding patterns 840 adjacent to each other. It may correspond to the recess provided in each. As described above, each of the plurality of upper slits 850 may have a line shape extending along the second direction Y, but is not limited thereto and may be arranged in various forms.

The electrophoretic solution 860 may be provided by mixing the light blocking particles 861 and the transparent fluid 863. In the electrophoretic solution 860, a plurality of upper slits surrounded by the second base film 810 and the first base film 710 and surrounded by the plurality of second protruding patterns 840 and the fourth adhesive layer 940 ( Once the 850 is formed, it may be injected into the plurality of upper slits 850.

According to an example, the plurality of lower slits 750 and the plurality of upper slits 850 are disposed to intersect with each other on the display panel 100, such that the first and second light path control layers 700 and 800 are formed in a first manner. Both the side viewing angle in the direction X and the side viewing angle in the second direction Y can be controlled. For example, the first optical path control layer 700 may include a plurality of lower slits 750 extending along the first direction X, thereby controlling the side viewing angle of the second direction Y. The second light path control layer 800 may include a plurality of upper slits 850 extending along the second direction Y to control the side viewing angle of the first direction X. FIG.

Therefore, when the driving voltage Vd is not applied to each of the lower driving electrode pattern 720 and the upper driving electrode pattern 820, the light traveling between the front Z of the display device and the second direction Y is excluded. Light absorbed by the first optical path control layer 700 and traveling between the front Z of the display device and the first direction X may be absorbed by the second optical path control layer 800. As a result, the plurality of lower slits 750 and the plurality of upper slits 850 are disposed to cross each other on the display panel 100, thereby driving voltages on the lower driving electrode pattern 720 and the upper driving electrode pattern 820, respectively. In the state in which Vd is not applied, both the side viewing angle in the first direction X and the side viewing angle in the second direction Y may be controlled to improve shielding characteristics.

27 is a plan view illustrating a display device according to a tenth exemplary embodiment of the present application, and FIG. 28 illustrates a state in which a driving voltage is applied to each of a lower driving electrode pattern and an upper driving electrode pattern in the display device of FIG. 27. 29 is a perspective view illustrating the first and second optical path control layers illustrated in FIG. 27. Here, the tenth embodiment of FIGS. 27 to 29 may correspond to the seventh embodiment of FIGS. 18 to 22 and the lower driving electrode pattern 720, the upper driving electrode pattern 820, and the plurality of first protruding patterns 740. The configuration of the plurality of second protruding patterns 840, the plurality of lower slits 750, and the plurality of upper slits 850 are the same as those described above. For example, the plurality of upper slits 850 of the display device of FIGS. 18 to 22 may have a line shape extending along the first direction X, and the plurality of upper slits of the display device of FIGS. 850 includes a plurality of first upper slits 851 extending along the first direction X and a plurality of second upper slits 852 extending along the second direction Y orthogonal to the first direction X. FIG. ) May be included. Accordingly, the configuration of the upper driving electrode pattern 820 and the plurality of second protrusion patterns 840 changed as the display device of FIGS. 27 to 29 includes the plurality of first and second upper slits 851 and 852. Except for the above, it is assumed that the configuration is the same as that of the display device of FIGS. 18 to 22. In addition, the lower driving electrode patterns 720, the plurality of first protrusion patterns 740, and the plurality of lower slits 750 may include the upper driving electrode patterns 820, the plurality of second protrusion patterns 840, and Since the structures correspond to the structures of the plurality of upper slits 850, the descriptions of the structures of the lower driving electrode pattern 720, the plurality of first protrusion patterns 740, and the plurality of lower slits 750 are omitted.

The plurality of second protruding patterns 840 may be attached onto the second common electrode 913 through a fourth adhesive layer. Specifically, the plurality of second protruding patterns 840 are formed on the second base film 810 and the upper driving electrode pattern 820, and then the second common electrode 913 via the fourth adhesive layer 940. It can be attached to. As such, when the plurality of second protruding patterns 840 are attached to the upper driving electrode pattern 820 through the fourth adhesive layer, the plurality of second protruding patterns 840 and the fourth adhesive layer 940 are surrounded by the plurality of second protruding patterns 840. The upper slit 850 may be formed. Therefore, each of the plurality of upper slits 850 may correspond to a recess provided between each of the plurality of second protruding patterns 840 adjacent to each other.

The plurality of upper slits 850 is surrounded by the plurality of second protruding patterns 840 and the fourth adhesive layer 940, and each of the plurality of upper slits 850 is disposed between the plurality of second protruding patterns 840 adjacent to each other. It may correspond to the recess provided in each. For example, the plurality of upper slits 850 extend along a plurality of first upper slits 851 extending along the first direction X and in a second direction Y orthogonal to the first direction X. FIG. And a plurality of second upper slits 852. That is, when each of the plurality of first and second upper slits 851 and 852 has a lattice shape extending along each of the first and second directions X and Y, the upper driving electrode pattern 820 may be formed. It may extend along the diagonal direction between the first direction (X) and the second direction (Y). Accordingly, the upper driving electrode pattern 820 may extend along a direction in which an area overlapping the plurality of upper slits 850 is minimized. As such, the arrangement structure of the upper driving electrode pattern 820 is changed according to the arrangement structure of the plurality of upper slits 850, so that the area of the upper driving electrode pattern 820 overlapping with the plurality of upper slits 850 is minimized. The area of the light blocking particles 861 may be minimized to improve the aperture ratio of the display panel 100.

As described above, each of the plurality of upper slits 850 may have a lattice shape extending along each of the first direction X and the second direction Y crossing the first direction X, but is not limited thereto. It can be arranged in various forms without.

As illustrated in FIG. 27, when the driving voltage Vd is not applied to the upper driving electrode pattern 820, the light blocking particles 861 included in the electrophoretic liquid 860 may have a plurality of first and second upper slits 851. , 852 may be interspersed over the entire area. Specifically, when the light blocking particles 861 are scattered over the entire areas of the plurality of first and second upper slits 851 and 852, the light blocking particles 861 may block some of the light emitted from the display panel 100. Can be. For example, the plurality of first upper slits 851 may extend along the first direction X, thereby controlling the side view angle of the second direction Y, and the plurality of second upper slits 852 may be By extending along the second direction Y, the side view angle in the first direction X can be controlled. That is, the second optical path control layer 800 can control the optical viewing angle of the display device by scattering the light blocking particles 861 in the entire areas of the plurality of first and second upper slits 851 and 852. .

As illustrated in FIG. 28, when the driving voltage Vd is applied to the upper driving electrode pattern 820, the light blocking particles 861 included in the electrophoretic liquid 860 may be provided with the upper driving electrode pattern 820 and the plurality of first electrodes. And an overlapping area (or intersecting area) of the second upper slits 851 and 852. In addition, only the transparent fluid 283 may remain in an area of the plurality of first and second upper slits 851 and 852 that does not cross the upper driving electrode pattern 820. In detail, the upper driving electrode pattern 820 may receive the driving voltage Vd from the driving integrated circuit 330 of the display driving circuit unit 300, and the light blocking particles 861 may have the upper driving electrode pattern 820. And the shortest distance between the plurality of first and second upper slits 851 and 852. That is, the light blocking particles 861 do not overlap the upper driving electrode pattern 820 and the plurality of first and second upper slits 851 and 852 based on the first and second directions X and Y. In the region, the upper driving electrode pattern 820 and the plurality of first and second upper slits 851 and 852 may move to an overlapping region. When the driving voltage Vd is applied to the upper driving electrode pattern 820, the light blocking particles 861 are based on the third direction Z perpendicular to the first direction X and the second direction Y. It may move to approach the upper driving electrode pattern 820. In addition, when the light blocking particles 861 are concentrated at the shortest distance between the upper driving electrode pattern 820 and the plurality of first and second upper slits 851 and 852, the plurality of first and second upper slits 851 are provided. 852, only the transparent fluid 283 may remain. As such, when the light blocking particles 861 are concentrated in the overlapping area of the upper driving electrode pattern 820 and the plurality of upper slits 850, the second optical path control layer 800 is emitted from the display panel 100. It can transmit light. For example, the light emitted in the front and front diagonal directions of the display panel 100 may not be blocked by the light blocking particles 861 and may pass through the second light path control layer 800.

Accordingly, in the display device according to the present application, the light blocking particles 861 may be concentrated in an overlapping area of the upper driving electrode pattern 820 and the plurality of upper slits 850, thereby improving the aperture ratio of the display panel 100. .

30 is a view for explaining light efficiency and shielding characteristics according to widths, intervals, and heights of a plurality of slits of the optical path control film. Here, the optical path control film of the first structure (Structure 1) includes a plurality of slits (Slit) having a first height (H1) arranged according to the first pitch (P1), and the second structure (Structure 2) The optical path control film of) includes a plurality of slits arranged according to the second pitch P2 and having a first height H1, and the optical path control film of the third structure (Structure 3) has a second structure. It comprises a plurality of slits arranged along the pitch P2 and having a second height H2. For example, the second pitch P2 corresponds to twice the first pitch P1, and the second height H2 corresponds to twice the first height H1. Also, the third structure 3 corresponds to the display device according to the seventh embodiment of the present application shown in FIGS. 18 to 22.

Referring to FIG. 30, the display device according to the present application includes the first and second light path control layers 700 and 800 to have a higher light efficiency than the display device including one light path control layer. It can have high shielding properties. Here, the shielding characteristic means a shielding characteristic against light incident on the light path control film at an angle of 45 degrees.

Specifically, the display device of the third structure (Structure 3) includes a plurality of lower slits 750 and a plurality of upper slits 850 arranged according to the second pitch P2 and having a second height H2. , The first structure having the same level of shielding characteristics as the display device of the first structure (Structure 1) including a plurality of slits (Slit) having a first height (H1) arranged according to the first pitch (P1), The display device may have a light efficiency L2 higher than the light efficiency L1 of the display device having the structure 1. Here, the pitch of the plurality of slits corresponds to the distance between the centers of each of the two adjacent slits. For example, the display device of the first structure (Structure 1) has the same level of shielding characteristics as the display device of the third structure (Structure 3), but a plurality of slits of the display device of the first structure (Structure 1) Since the pitch P1 is smaller than the pitches P2 of the plurality of lower slits 750 and the plurality of upper slits 850 of the display device of the third structure (Structure 3), the plurality of slits Slit and display As the overlapping area of the panel increases, the light efficiency L1 of the display device may decrease. Therefore, the light efficiency L2 of the display device Structure 3 according to the present application may be higher than the light efficiency L1 of the display device Structure 1 including one light path control layer having the same level of shielding characteristics. have.

The display device of the third structure 3 includes a plurality of lower slits 750 and a plurality of upper slits 850 arranged along the second pitch P2 and having a second height H2. The second structure has the same level of light efficiency as the display device of the second structure (Structure 2) including a plurality of slits (Slit) having a first height (H1) arranged according to the second pitch (P2) It may have a higher shielding property than the display device of (Structure 2). Here, the light efficiency may correspond to the ratio of the light emitted from the display panel 100 to pass through the optical path control film. For example, the pitches P2 of the plurality of slits Slit of the display device of the second structure 2 may include the lower slits 750 and the plurality of upper slits of the display device of the third structure 3. Since it is the same as the pitch P2 of 850, the display device of the second structure 2 may have the same level of light efficiency as the display device of the third structure 3. However, the height H2 of the plurality of upper slits 850 of the display device of the third structure 3 is higher than the height H1 of the plurality of slits Slit of the display device of the second structure 2. Therefore, the display device of the third structure (Structure 3) may have a higher shielding characteristics than the display device of the second structure (Structure 2). For example, the display device of the third structure (Structure 3) can block the light not blocked in the plurality of lower slits 750 to the plurality of upper slits 850, so that the display device of the second structure (Structure 2) It can have higher shielding properties. Accordingly, the display device structure 3 according to the present application may have a higher shielding property than the display device structure 2 including one light path control layer having the same level of light efficiency.

As such, the display device of the first structure (Structure 1), the display device of the second structure (Structure 2), and the display device of the third structure (Structure 3) may have optical characteristics as shown in Table 3 below. have.

First structure Second structure Third structure Light efficiency (opening rate) 100% 130% 130% Shielding properties 100% 0% 112%

Herein, when the light efficiency of the display device of the first structure (Structure 1) is assumed to be 100%, the light efficiency is indicative of the light efficiency of another structure. In addition, the shielding characteristic is assuming that the shielding characteristic of the display device of the first structure (Structure 1) is 100%, it shows the shielding characteristics of the other structure in contrast to this. In addition, when the shielding property of the second structure (Structure 2) is 0% means that the display device of the second structure (Structure 2) is difficult to block the light incident to the optical path control film at an angle of 45 degrees. The display device structure 3 according to the present application may have the same level of shielding characteristics as the display device of the first structure, and may have higher light efficiency than the display device of the first structure. In addition, the display device structure 3 according to the present application may have the same level of light efficiency as that of the display device of the second structure, and may have higher shielding characteristics than the display device of the second structure. have

FIG. 31 illustrates a light profile of each of the first mode and the second mode in the display device of FIG. 18. Here, FIG. 31A corresponds to the light profile according to the first mode or the wide viewing angle mode of the display device, and FIG. 31B corresponds to the light profile according to the second mode or the narrow viewing angle mode of the display device. The luminance observed in the display device of FIGS. 31A and 31B may correspond to 0 to 108. FIG.

31A and 31B, the display device of the first mode and the display device of the second mode may have transmittances as shown in Table 4 below.

First mode Second mode center Luminance [nit] 107.4 106.6 Transmittance [%] 35.2% 34.9% side
45 degrees Luminance [nit] 15.8 1.6 Transmittance [%] 14.74% 1.52% side
-45 degrees Luminance [nit] 19.5 1.1 Transmittance [%] 18.12% 1.0%

The display device of the first mode corresponds to a state in which the driving voltage Vd is applied to the lower driving electrode pattern 720 and the upper driving electrode pattern 820, and the display device of the second mode corresponds to the lower driving electrode pattern. The driving voltage Vd is not applied to the 720 and the upper driving electrode pattern 820. In addition, the center of [Table 4] corresponds to the luminance observed from the front of the display device, and the side 45 degrees and the side -45 degrees correspond to the luminance observed at the front diagonal 45 degrees and the diagonal -45 degrees of the display device. According to an exemplary embodiment, the display device may include the light blocking particles 761 and 861 in the first mode, or the shortest distance between the lower driving electrode pattern 720 and the plurality of lower slits 750 or the upper driving electrode pattern 820 and the plurality of upper portions. The light may be concentrated at the shortest distance between the slits 850 to transmit the light emitted from the display panel 100.

In addition, in the display device according to the present application, the light blocking particles 761 and 861 are interspersed over the entire area of the plurality of lower slits 750 and the plurality of upper slits 850 in the second mode, so that the front of the display panel 100 is provided. By blocking the light emitted diagonally, the side viewing angle can be controlled.

The present application described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the art that various substitutions, modifications, and changes can be made without departing from the technical matters of the present application. It will be apparent to those who have the knowledge of. Therefore, the scope of the present application is represented by the following claims, and it should be construed that all changes or modifications derived from the meaning and scope of the claims and equivalent concepts thereof are included in the scope of the present application.

100, 400, 500: display panel
200: optical path control film 210: first base film
220: drive electrode pattern 230: adhesive layer
240: a plurality of protrusion patterns 250: a plurality of slits
260: common electrode 270: second base film
280: electrophoretic solution 290: drive barrel electrode
300: display driving circuit unit 310: a plurality of circuit films
330: a plurality of driving integrated circuit 350: a printed circuit board
370: timing controller 600: backlight unit
700: first optical path control layer 710: first base film
720: lower driving electrode pattern 740: a plurality of first protrusion patterns
750: plurality of lower slits 760: electrophoretic solution
800: second optical path control layer 810: second base film
820: Upper driving electrode pattern 840: A plurality of second protruding patterns
850: plurality of upper slits 860: electrophoretic solution
910: common electrode 920: third base film

Claims (26)

Display panel; And
A light path control film attached to the display panel,
The optical path control film,
A plurality of slits;
An electrophoretic solution including light blocking particles injected into the plurality of slits; And
It includes a drive electrode pattern disposed to cross the longitudinal direction of the plurality of slits,
And the light blocking particles are concentrated in an intersection region of the plurality of slits and the driving electrode pattern or interspersed in the plurality of slits. The method of claim 1,
The optical path control film,
A first base film on which the driving electrode pattern is patterned;
A plurality of protruding patterns attached to the driving electrode pattern through an adhesive layer;
A common electrode disposed on the plurality of protruding patterns; And
And a second base film disposed on the common electrode. The method of claim 2,
Each of the plurality of slits corresponds to a recess provided between each of the plurality of protruding patterns adjacent to each other. The method of claim 1,
The optical path control film transmits light emitted from the display panel in the first mode, and blocks light emitted in a direction other than the front of the display panel in the second mode. The method of claim 1,
The electrophoretic solution,
The light blocking particles having electrophoretic properties and light blocking properties; And
And a transparent fluid that transmits light and flows in the plurality of slits. The method of claim 1,
Each of the plurality of slits has a line shape extending in a first direction,
The driving electrode pattern extends in a second direction crossing the first direction. The method of claim 1,
Each of the plurality of slits has a lattice shape extending along each of a first direction and a second direction crossing the first direction,
And the driving electrode pattern extends along a diagonal direction between the first and second directions. The method of claim 7, wherein
And the driving electrode pattern extends along a diagonal direction while passing through an intersection area of the plurality of slits in the first direction and the plurality of slits in the second direction. Display panel; And
A light path control film attached to the display panel,
The optical path control film,
A plurality of slits;
Light blocking particles injected into the plurality of slits; And
A drive barrel electrode disposed on the plurality of slits,
And the light blocking particles are concentrated at the shortest distance between the plurality of slits and the driving through electrode, or are scattered all over the plurality of slits. The method of claim 9,
The optical path control film,
A first base film supporting the driving barrel electrode;
A plurality of protruding patterns attached onto the driving through electrode through an adhesive layer;
A common electrode disposed on the plurality of protruding patterns; And
And a second base film disposed on the common electrode. A display panel including a thin film transistor layer including a plurality of thin film transistors, and a light emitting element layer connected to each of the plurality of thin film transistors to form a plurality of light emitting regions; And
A light path control film attached to the display panel,
The optical path control film,
A plurality of slits;
Light blocking particles injected into the plurality of slits; And
It includes a drive electrode pattern disposed to cross the longitudinal direction of the plurality of slits,
And the light blocking particles are concentrated in an intersection region of the plurality of slits and the driving electrode pattern, or are scattered all over the plurality of slits. The method of claim 11,
The display panel further includes a black matrix disposed between the plurality of light emitting regions,
The intersection area of the plurality of slits and the driving electrode pattern overlaps the black matrix. The method of claim 11,
A circuit film attached to a pad portion of the display panel; And
And a driving integrated circuit mounted on the circuit film to provide a data voltage to the plurality of thin film transistors and to provide a driving voltage to the driving electrode pattern. A lower substrate including a plurality of thin film transistors for adjusting the light transmittance of each of the plurality of pixels, an upper substrate having a plurality of color filters and a black matrix, and a liquid crystal interposed between the lower substrate and the upper substrate. A display panel comprising a layer;
A backlight unit radiating light toward the display panel; And
An optical path control film interposed between the display panel and the backlight unit;
The optical path control film,
A plurality of slits;
Light blocking particles injected into the plurality of slits; And
It includes a drive electrode pattern disposed to cross the longitudinal direction of the plurality of slits,
And the light blocking particles are concentrated in an intersection region of the plurality of slits and the driving electrode pattern, or are scattered all over the plurality of slits. The method of claim 14,
The intersection area of the plurality of slits and the driving electrode pattern overlaps the black matrix. The method of claim 14,
A circuit film attached to a pad portion of the display panel; And
And a driving integrated circuit mounted on the circuit film to provide a data voltage to the plurality of thin film transistors and to provide a driving voltage to the driving electrode pattern. The method of claim 14,
The backlight unit,
A plurality of light sources; And
And a printed circuit board configured to provide a power supply voltage to the plurality of light sources and provide a driving voltage to the driving electrode pattern. Display panel;
A first optical path control layer including a plurality of lower slits, an electrophoretic solution having light blocking particles injected into the plurality of lower slits, and a lower driving electrode pattern disposed to intersect a length direction of the plurality of lower slits; And
An upper drive disposed on the first optical path control layer and disposed to intersect a plurality of upper slits, an electrophoretic liquid having light blocking particles injected into the plurality of upper slits, and a longitudinal direction of the plurality of upper slits A second optical path control layer including an electrode pattern,
The light blocking particles may be concentrated in an intersection region of the plurality of lower slits and the lower driving electrode pattern, and an intersection region of the plurality of upper slits and the upper driving electrode pattern, or the plurality of lower slits and the plurality of upper slits A display device interspersed within. The method of claim 18,
The optical path control film dense the light blocking particles at the shortest distance between the lower driving electrode pattern and the plurality of lower slits in the first mode, and the light blocking particles are arranged on the upper driving electrode pattern and the plurality of upper slits. And a light emitting device, which is concentrated at the shortest distance therebetween and transmits light emitted from the display panel. The method of claim 18,
And the light path control film intersects the light blocking particles in an entire area of the plurality of lower slits and an entire area of the plurality of upper slits in a second mode to block a part of light emitted from the display panel. The method of claim 18,
The first optical path control layer includes a first base film on which the lower driving electrode pattern is patterned, and a plurality of first protruding patterns disposed on the lower driving electrode pattern.
The second optical path control layer includes a second base film on which the upper driving electrode pattern is patterned, and a plurality of second protruding patterns disposed on the upper driving electrode pattern.
The apparatus may further include a common electrode disposed between the plurality of first protrusion patterns and the plurality of second protrusion patterns.
Each of the plurality of lower slits corresponds to a recess provided between the plurality of first protruding patterns adjacent to each other, and each of the plurality of upper slits corresponds to a recess provided between the plurality of second protruding patterns adjacent to each other. Display device. The method of claim 21,
And a third base film disposed between the first and second light path control layers,
The common electrode may include a first common electrode disposed between one surface of the third base film and the plurality of first protrusion patterns, and a second electrode disposed between the other surface of the third base film and the plurality of second protrusion patterns. A display device comprising a common electrode. The method of claim 22,
Each of the plurality of lower slits and the plurality of upper slits has a line shape extending in a first direction.
The lower driving electrode pattern and the upper driving electrode pattern each extend in a second direction crossing the first direction. The method of claim 22,
Each of the plurality of lower slits and the plurality of upper slits has a lattice shape extending along a first direction and a second direction, respectively.
The lower driving electrode pattern and the upper driving electrode pattern each extend in a diagonal direction between the first direction and the second direction. The method of claim 24,
The lower driving electrode pattern extends along a diagonal direction while passing through an intersection area of the plurality of lower slits in the first direction and the plurality of lower slits in the second direction,
The upper driving electrode pattern extends in a diagonal direction while passing through an intersection area of the plurality of upper slits in the first direction and the plurality of upper slits in the second direction. The method of claim 21,
The plurality of lower slits may have a line shape extending along a first direction, and the lower driving electrode pattern may have a line shape extending along a second direction crossing the first direction.
The plurality of upper slits may have a line shape extending along the second direction, and the upper driving electrode pattern may have a line shape extending along the first direction.

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