CN107219667B - Curved surface display panel and display device - Google Patents
Curved surface display panel and display device Download PDFInfo
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- CN107219667B CN107219667B CN201710495306.2A CN201710495306A CN107219667B CN 107219667 B CN107219667 B CN 107219667B CN 201710495306 A CN201710495306 A CN 201710495306A CN 107219667 B CN107219667 B CN 107219667B
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- G—PHYSICS
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
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- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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Abstract
The invention discloses a curved surface display panel and a display device. The curved surface display panel comprises a plurality of sub-pixels, wherein each sub-pixel comprises a pixel electrode with a double-domain structure, and each sub-pixel comprises a first domain and a second domain; the curved surface display panel comprises a first substrate, a second substrate and a liquid crystal layer arranged between the first substrate and the second substrate; a shielding layer is arranged on the first substrate or the second substrate and comprises a plurality of shielding units, and the orthographic projection of each shielding unit on each sub-pixel covers the junction of the first domain and the second domain; the display area of the curved surface display panel comprises a plurality of sub-areas, and each sub-area comprises a plurality of sub-pixels; the first sub-area and the second sub-area are two sub-areas of the display area, and the area of the shielding unit located in the first sub-area is larger than that of the shielding unit located in the second sub-area. According to the invention, the brightness uniformity of the curved surface display panel can be improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a curved surface display panel and a display device.
Background
As the user's demand for the display effect of the display device is higher and higher, on one hand, in order to improve the viewing angle of the display panel, the design of the sub-pixels on the display panel is developed from the original single domain electrode to a double domain electrode, and fig. 1 is a schematic diagram of a prior art double domain electrode, where the electrode includes a first domain portion 10' and a second domain portion 20', the first domain portion 10' has a plurality of electrode bars 101' extending along a direction c, and the second domain portion 20' has a plurality of electrode bars 201' extending along a direction d.
On the other hand, display panels are also being developed from generally rectangular flat display panels into display panels of more shapes and structures. The curved surface display panel can give better experience of a user in vision, and the reason is that the eyeball of a person is protruded with radian, the radian of the curved surface display panel can ensure that the distances between each position on the eyeball and the display panel are more equal, so that better sensory experience is brought. Besides being a large-sized display panel, the usage scenario of the curved display panel is also applied to mobile phones, televisions and wearable smart devices, such as smart watches, head-mounted smart glasses, and the like.
In the prior art, for a curved display panel adopting a double-domain electrode, a design with equal aperture opening ratio and same pixel is still adopted, and a curved screen is manufactured by bending after forming a box, so that curved display is realized. Fig. 2 is a schematic cross-sectional view of a curved display panel in the prior art, please refer to fig. 2, which shows two sub-pixels, namely a first sub-pixel 11 'and a second sub-pixel 12', on a curved display panel 1', wherein the sizes and aperture ratios of all the sub-pixels on the curved display panel 1' are substantially the same, that is, the widths of the first sub-pixel 11 'and the second sub-pixel 12' are both a, since the first sub-pixel 11' is close to the center of the curved display panel 1' and the second sub-pixel 12' is close to the end of the curved display panel 1', the front view light width of the first sub-pixel 11' is also a, the front-view light transmission width of the second sub-pixel 12 'is b, and b is smaller than a, which causes the front-view light transmission amount of the curved display panel 1' to be inconsistent, that is, the front-view light transmission amount of the two end sub-pixels is smaller than that of the middle sub-pixel, so that the problem of bright middle and dark ends of the curved display panel occurs.
Therefore, it is an urgent problem to be solved in the art to provide a curved display panel capable of improving brightness uniformity.
Disclosure of Invention
The invention provides a curved display panel and a display device, which solve the technical problem that the brightness of two end parts and the middle part of the curved display panel is not uniform in the prior art.
In order to solve the above technical problems, the present invention provides a curved display panel.
The curved display panel comprises a plurality of sub-pixels, wherein each sub-pixel comprises a pixel electrode with a double-domain structure, and each sub-pixel comprises a first domain and a second domain; the curved surface display panel comprises a first substrate, a second substrate and a liquid crystal layer arranged between the first substrate and the second substrate; a shielding layer is arranged on the first substrate or the second substrate and comprises a plurality of shielding units, and the orthographic projection of each shielding unit on the sub-pixel covers the junction of the first domain and the second domain; the display area of the curved surface display panel comprises a plurality of sub-areas, and each sub-area comprises a plurality of sub-pixels; the first sub-area and the second sub-area are two sub-areas of the display area, wherein the distance between the center of the first sub-area and the central axis of the curved display panel is smaller than the distance between the center of the second sub-area and the central axis, and the central axis is an intersection line of a tangent plane passing through the central point of the curved display panel and the curved display panel; the area of the shielding unit in the first sub-area is larger than that of the shielding unit in the second sub-area.
In order to solve the above technical problem, the present invention further provides a display device.
The display device provided by the invention comprises any curved surface display panel provided by the invention.
Compared with the prior art, the curved surface display panel and the display device have the advantages that:
the area of the shielding unit arranged at the two-domain junction of the two-domain pixel electrode is smaller at the position far away from the central axis of the curved display panel, namely the position of the sub-pixel with larger front-view light transmission quantity, and the area of the shielding unit arranged at the two-domain junction of the two-domain pixel electrode is compensated by the difference of the areas of the shielding units, so that the brightness uniformity of the curved display panel is improved, and the display effect of the curved display panel can be improved.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic diagram of a prior art dual domain electrode;
FIG. 2 is a schematic cross-sectional view of a curved display panel in the prior art;
fig. 3 is a schematic structural diagram of a pixel array of a curved display panel according to an embodiment of the present invention after being unfolded into a plane;
FIG. 4 is a schematic cross-sectional view of a curved display panel along the line A-A in FIG. 3 according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a curved display panel along the line D-D in FIG. 3 according to an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of a curved display panel along line D-D of FIG. 3 according to another embodiment of the present invention;
FIG. 7 is a schematic diagram of a pixel electrode of a curved display panel according to an embodiment of the invention;
FIG. 8 is a schematic diagram of another pixel electrode of a curved display panel according to an embodiment of the invention;
FIG. 9 is a schematic diagram of a curved display panel according to an embodiment of the present invention;
FIG. 10 is a schematic cross-sectional view of the curved display panel shown in FIG. 9 taken along the line C-C';
fig. 11 is a schematic diagram illustrating calculation of the height corresponding to the sub-region of the curved display panel according to the embodiment of the present invention;
FIG. 12 is a cross-sectional view of a first substrate of a curved display panel according to an embodiment of the present invention;
fig. 13 is a top view of a second substrate of a curved display panel provided in the prior art;
fig. 14 is a top view of a second substrate of a curved display panel according to an embodiment of the invention;
fig. 15 is a top view of a first substrate of a curved display panel according to an embodiment of the invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 3 is a schematic structural diagram of a pixel array after a curved display panel provided in an embodiment of the present invention is unfolded into a plane, fig. 4 is a schematic structural diagram of a cross section of the curved display panel provided in the embodiment of the present invention along a tangent line a-a in fig. 3, fig. 5 is a schematic structural diagram of a cross section of the curved display panel provided in an embodiment of the present invention along a tangent line D-D in fig. 3, fig. 6 is a schematic structural diagram of a cross section of the curved display panel provided in another embodiment of the present invention along a tangent line D-D in fig. 3, fig. 7 is a schematic diagram of a pixel electrode of the curved display panel provided in an embodiment of the present invention, and fig. 8 is a schematic diagram of another pixel electrode of the curved display panel provided in an embodiment of the present invention, and fig. 3 to fig. 8 are appropriately referred to, and the following detailed description is provided for the curved.
As shown in fig. 3, the curved display panel includes a plurality of sub-pixels SP each having a pixel electrode (not shown in fig. 3) of a dual domain structure disposed therein. With continued reference to fig. 3, the display area of the curved display panel has a plurality of sub-areas SAA, each sub-area SAA includes a plurality of sub-pixels SP, and each sub-pixel SP has a pixel electrode (not shown in fig. 3) disposed therein. The intersection line of the tangent plane passing through the center point of the curved display panel and the curved display panel is defined as the central axis R of the curved display panel.
It should be noted that the curved display panel shown in fig. 3 is rectangular after being unfolded into a plane, and actually, the curved display panel provided by the present invention may be in other regular or irregular shapes after being unfolded into a plane, for example, may be trapezoidal, and the shape shown in fig. 3 does not limit the curved display panel of the present invention.
With continued reference to fig. 3, the first sub-area SAA1 and the second sub-area SAA2 are two sub-areas within the display area, wherein the distance between the center of the first sub-area SAA1 and the central axis R is smaller than the distance between the center of the second sub-area SAA2 and the central axis R. In this embodiment, the center of each sub-region is defined as the geometric center of the sub-region. In an embodiment, a schematic cross-sectional structure view along a tangent line D-D in fig. 3 is shown in fig. 5 and fig. 6, where fig. 5 and fig. 6 show a film structure of the curved display panel of the embodiment, and specifically, the curved display panel of the embodiment includes a backlight module 501, a first substrate 502 and a second substrate 503 disposed on the backlight module 501 in an opposite manner, and a liquid crystal layer 504 disposed between the first substrate 502 and the second substrate 503. For example, the first substrate 502 is a Thin Film Transistor (TFT) substrate, the second substrate 503 is a color filter substrate, and the liquid crystal layer 504 is disposed between the TFT substrate and the color filter substrate. In one embodiment, as shown in fig. 5, a shielding layer 505 is disposed on the first substrate 502. In another embodiment, as shown in fig. 6, a shielding layer 505 is disposed on the second substrate 503. The shielding layer 505 includes a plurality of shielding units.
As shown in fig. 7 and 8, the pixel electrode PE includes a plurality of electrode stripes, and the sub-pixel SP includes a first domain SP1 and a second domain SP2 according to the extending direction of the electrode stripes. In one embodiment, as shown in fig. 7, the electrode bar extends laterally, and in another embodiment, as shown in fig. 8, the electrode bar extends longitudinally, and in any case, the front projection of the shielding unit 50 at the sub-pixel SP covers the boundary between the first domain SP1 and the second domain SP 2.
As shown in fig. 3, the area of the shielding unit 51 positioned in the first sub-region SAA1 is larger than the area of the shielding unit 52 positioned in the second sub-region SAA 2.
Specifically, the shielding unit 51 and the shielding unit 52 may be both regular strip-shaped structures, and the shielding unit 51 and the shielding unit 52 have the same width and different lengths; alternatively, the shielding unit 51 and the shielding unit 52 are provided with the same length and different widths; alternatively, the length and width of the shielding unit 51 and the shielding unit 52 are set to be different.
As shown in fig. 3 and 4, the length of the shielding unit 51 is different from that of the shielding unit 52, and the length M1 of the shielding unit 51 is greater than the length M2 of the shielding unit 52;
as shown in fig. 3, 5 and 6, the width of the shielding unit 51 is different from that of the shielding unit 52, and the width N1 of the shielding unit 51 is greater than the width N2 of the shielding unit 52.
In the embodiment provided by the present invention, the first sub-region SAA1 is closer to the central axis R than the second sub-region SAA2, and the second sub-region SAA2 is closer to the end of the curved display panel than the first sub-region SAA1, so that the front view light transmittance of the first sub-pixel SP1 in the first sub-region SAA1 is greater than the front view light transmittance of the second sub-pixel SP2 in the second sub-region SAA 2.
The shielding unit 51 of the first sub-pixel SP1 in the first sub-region SAA1 shields the light passing through the first sub-pixel SP1, the shielding unit 52 of the second sub-pixel SP2 in the second sub-region SAA2 shields the light passing through the second sub-pixel SP2, the area of each shielding unit 51 in the first sub-region SAA1 is set larger than the area of each shielding unit 52 in the second sub-region SAA2, so that the amount of light shielded by the shielding unit 51 via the first sub-pixel SP1 is larger than the amount of light shielded by the shielding unit 52 via the second sub-pixel SP2, and the amount of front view light passing through the first sub-pixel SP1 is compensated to be larger than the amount of front view light passing through the second sub-pixel SP2, that is, although the amount of front view light passing through the first sub-pixel SP1 is larger, the amount of light passing through the first sub-pixel SP1 is smaller than the amount of light passing through the second sub-pixel SP2, thus, the nonuniformity of the amount of front-view luminous flux is compensated for by the difference in the size of the shielding units between the first sub-area SAA1 and the second sub-area SAA 2.
In summary, according to the embodiments provided by the present invention, at a position close to the central axis of the curved display panel, that is, at a position of a sub-pixel with a large amount of front view luminous flux, the area of the shielding unit disposed at the boundary between two domains of the dual-domain pixel electrode is larger, and at a position away from the central axis of the curved display panel, that is, at a position of a sub-pixel with a small amount of front view luminous flux, the area of the shielding unit disposed at the boundary between two domains of the dual-domain pixel electrode is smaller, so that the nonuniformity generated by the amount of front view luminous flux is compensated by the difference in the areas of the shielding units, thereby improving the uniformity of brightness of the curved display panel and improving the display effect of the curved display panel.
Further, with reference to fig. 3, the area of each shielding unit in the same sub-area is the same on the curved surface of the curved display panel along the direction perpendicular to the central axis R and in the direction B and the direction B' pointing from the central axis R to the direction away from the central axis R. For example, the second sub-pixel SP2 located in the second sub-region SAA2 is the same as the second sub-pixel SP2' in area; for example, the first sub-pixel SP1 located in the first sub-region SAA1 has the same area as the first sub-pixel SP 1'.
In a direction perpendicular to the central axis R on the curved surface of the curved display panel and pointing from the central axis R to a direction B away from the central axis R, the areas of the pixel electrodes of different sub-regions decrease sequentially, for example, the areas of the shielding units of the first sub-pixel SP1', the third sub-pixel SP3 and the second sub-pixel SP2 decrease sequentially; on the curved surface of the curved display panel along the direction perpendicular to the central axis R and pointing from the central axis R to the direction B' away from the central axis R, the areas of the shielding units of the different sub-regions decrease sequentially, for example, the areas of the shielding units of the first sub-pixel SP1, the fourth sub-pixel SP4 and the fifth sub-pixel SP5 decrease sequentially.
In the embodiment, in the direction perpendicular to the central axis and pointing from the central axis to the direction far away from the central axis, the distance difference between each sub-pixel and the central axis in the same sub-area is smaller, the front view luminous flux difference of each sub-pixel is smaller, and the same sub-area adopts the shielding units with the same size, so that the difference of the sizes of the shielding units on the same curved surface display panel is reduced, and the process requirements are reduced; the distance difference between each sub-pixel in different sub-areas and the central axis is larger, the front view luminous flux difference of each sub-pixel in different sub-areas is larger, and the front view luminous flux is smaller and smaller in the direction from the central axis to the direction far away from the central axis, so that the area of the shielding units adopted by different sub-areas is also reduced in sequence, and the front view luminous flux difference is compensated well on the basis of reducing the technological requirements.
Further, the curved surface of the curved display panel is the same as the arc line obtained by intersecting any plane perpendicular to the central axis, that is, the curved display panel is rectangular after being unfolded into a plane, and a plurality of sub-pixels of the curved display panel form a pixel column extending in a direction parallel to the central axis, and form a pixel row extending in a direction perpendicular to the central axis, one or more pixel columns may be set as one sub-region. Alternatively, referring to fig. 3, two pixel columns are included in each sub-region SAA.
In this embodiment, distances between sub-pixels in each pixel column and the central axis are the same, the sub-regions are divided in units of pixel columns, the difference of the amount of front-view luminous flux of the sub-pixels in the same sub-region is small, and the influence on the effect of compensating the amount of front-view luminous flux is small by adopting the shielding units with the same size.
Particularly, when one pixel column is set as one sub-region, the amount of front-view luminous flux of the sub-pixels in the same sub-region is the same, and at the moment, the shielding units with the same size are adopted by the sub-pixels in the same sub-region, so that the brightness uniformity of the sub-pixels in the same sub-region is ensured to be better. In addition, the shielding units with different sizes are adopted in different sub-areas, the front-view light transmission quantity between the pixel rows can be compensated, and the brightness uniformity of the curved surface display panel is improved.
Further, when the curved surface of the curved display panel is different from an arc line obtained by intersecting an arbitrary plane perpendicular to the central axis, for example, when the curved surface of the curved display panel is a part of a side surface of the trapezoidal circular truncated cone, for example, when the curved surface of the curved display panel is a part of a spherical surface or an ellipsoidal surface, in order to compensate for the front view throughput difference of each sub-pixel on the curved display panel to the maximum, each sub-region includes one sub-pixel, the size of the shielding unit of each sub-pixel is determined according to the distance between the sub-pixel and the central axis, the sub-pixel having a larger distance from the central axis has a smaller front view throughput, and thus the shielding unit of the sub-pixel having a larger distance from the central axis has a smaller area.
Further, fig. 9 is a schematic view of a curved display panel according to an embodiment of the present invention, and fig. 10 is a schematic view of a cross-sectional structure of the curved display panel shown in fig. 9 taken along a tangent line C-C', and referring to fig. 9 as appropriate, the curved display panel includes a first arc edge E1 and a second arc edge E2 which are oppositely disposed, and further includes a first straight edge E3 and a second straight edge E4 which are oppositely disposed and respectively connected to the first arc edge E1 and the second arc edge E2, and on the curved display panel, a first sub-region SAA1 passing through a central axis R and a second sub-region SAA2 far from the central axis R are provided.
Along the cutting line C-C' shown in fig. 9 and in a direction perpendicular to the central axis R, a cross section as shown in fig. 10 can be obtained, with appropriate reference to fig. 10, the first straight side E3 and the second straight side E4 constituting a first plane S1.
Defining the vertical distance between the center of the sub-region and the first plane S1 as the height corresponding to the sub-region, wherein the height corresponding to the first sub-region SAA1 is d1Height d corresponding to the second sub-area2。
Area S of shielding unit in first sub-area1And the area S of the shielding unit in the second sub-area2The following relationship is satisfied: s1*d2＝S2*d1。
For the curved display panel, the lower the height corresponding to the sub-region is, the larger the distance between the sub-region and the central axis is, the closer the sub-region is to the end of the curved display panel, and the smaller the front view luminous flux of the sub-pixel in the sub-region is.
Further, the first shielding unit is any one of the shielding units in the display area, and referring to fig. 10, the first shielding unit is one of the shielding units in the second sub-area, R is a curvature radius of a position where the first shielding unit is located, θ is a central angle corresponding to the curved display panel, L is a distance between the first straight edge and the second straight edge, x is a distance between the first straight edge and the second straight edge, andnthe distance between the foot of the center of the sub-region where the first shielding unit is located on the first plane and the reference straight edge is the straight edge of the first straight edge and the second straight edge, which is close to the center of the sub-region where the first shielding unit is located.
SmaxThe area S of the first shielding unit is the area of the maximum shielding unit at the position with the curvature radius of R on the curved surface display panelnThe following relationship is satisfied:
fig. 11 is a schematic view illustrating calculation of the corresponding heights of the sub-regions of the curved display panel according to the embodiment of the invention, as shown in fig. 11, the length of the electrode bars of the sub-pixels located in the first sub-region SAA1 is the shortest, and the center of the first sub-region SAA1 is defined as a point a, and the center of the second sub-region SAA2 is defined as a point B.
Height corresponding to the first sub-area SAA 1:
wherein lACIs the length of line segment AC,/COThe following length is analogized to the length of the line segment CO, and is not described herein again.
Height corresponding to the second sub-area SAA 2:
c is mixing the above d1And d2Is substituted into the formula S1*d2＝S2*d1Then the above-mentioned calculation mask can be obtainedThe area of the gear unit.
Further, fig. 12 is a cross-sectional view of the first substrate of the curved display panel according to the embodiment of the present invention, in some alternative implementations, as shown in fig. 12, the first substrate 902 includes a thin film transistor 21 and a pixel electrode PE located in a sub-pixel of the display panel, the thin film transistor 21 includes a gate G, a source S and a drain D, wherein the source S of the thin film transistor 21 is connected to a driving line of the curved display panel, the gate G of the thin film transistor 21 is connected to a scanning line of the curved display panel, the drain D of the thin film transistor 21 is connected to the pixel electrode PE, and the shielding layer 905 is disposed on a surface of the first substrate 902 on a side away from the display device layer.
The curved surface display panel provided by the embodiment is adopted, the shielding layer is arranged on the surface of one side, far away from the display device layer, of the first substrate, the influence on the film layer structure of the first substrate is small, the process of manufacturing the shielding layer is added on the existing first substrate manufacturing process, the increased shielding layer can not influence the original film layer of the first substrate, and the shielding effect is only realized on the light rays generated by the backlight module positioned under the first substrate.
Further, fig. 13 is a top view of a second substrate of a curved display panel provided in the prior art, and fig. 14 is a top view of the second substrate of the curved display panel provided in the embodiment of the present invention, in some optional embodiments, as shown in fig. 13 and fig. 14, the second substrate of the curved display panel is a color filter substrate, the second substrate includes a glass plate 31, and a black matrix 32 (filled with oblique lines) disposed on the glass plate 31, and as shown in fig. 14, a shielding layer 905 (filled with dashed lines) and the black matrix 32 are disposed on the same film layer.
Since the black matrix on the color filter substrate has a shading effect, in the curved display panel provided in this embodiment, the shielding layer and the black matrix are disposed on the same film layer, and when the color filter substrate is processed, the shielding layer and the black matrix can be completed by the same process, which is simple in process and saves the cost of the curved display panel.
Further, in some optional embodiments, with continuing reference to fig. 12, the first substrate 902 includes a common electrode COM and a pixel electrode PE, fig. 15 is a top view of the first substrate of the curved display panel according to the embodiment of the present invention, and in some optional embodiments, the curved display panel further includes an integrated circuit chip IC, and the integrated circuit chip IC is connected to each common electrode COM through a common electrode line COMs. The block-shaped common electrode COM on the first substrate 902 can be reused as a position touch electrode of the curved display panel, and the common electrode COM is arranged in a matrix, wherein rows and columns of the matrix are natural numbers greater than or equal to 2, a row direction of the matrix is a first direction (a horizontal direction in the figure), and a column direction of the matrix is a second direction (a vertical direction in the figure). Each common electrode is correspondingly connected with at least one common electrode wire COMS, namely a touch electrode wire, and each common electrode is connected with the integrated circuit chip IC through the touch electrode wire. In this embodiment, the common electrode is disposed on a surface of the first substrate 902 facing the second substrate. The common electrodes COM are rectangular common electrodes, any two common electrodes COM are arranged in an insulating mode, and adjacent block-shaped common electrodes COM are insulated through slits. The slit is located between two adjacent sub-pixels, and the width of the slit may be slightly larger than the width of the data line, slightly smaller than the width of the data line, or equal to the width of the data line. In the display phase, a common voltage is applied to each common electrode COM, and an electric field for driving liquid crystal molecules in the liquid crystal layer to rotate is formed between the common electrode COM and a pixel electrode PE disposed in the sub-pixel. In the touch phase, a touch signal is applied to each common electrode COM, and the touch position is detected by detecting the change of the self-capacitance transmitted to each common electrode COM in the integrated circuit chip IC.
Since the lengths of the common electrode lines COMs between all the common electrodes COM and the integrated circuit chip IC are different, it cannot be guaranteed that the common voltage signals or touch signals actually applied to the common electrodes COM are the same.
Further, a plurality of shielding units are arranged to form a plurality of shielding unit groups 5, two adjacent shielding units in each shielding unit group 5 extend and are connected with each other, as shown in fig. 15, each shielding unit group 5 is connected with the integrated circuit chip IC and the common electrode COM, another channel for transmitting signals between the integrated circuit chip IC and the common electrode COM is formed through the shielding layer, and it is ensured that common voltage signals or touch signals applied to the common electrode COM are the same as far as possible.
Further, as shown in fig. 12, the first substrate includes a gate metal layer on which the gate G of the thin film transistor 21 is disposed, the shielding layer and the gate metal layer are located in the same film layer, and the shielding layer and the common electrode COM can be conducted through the via hole.
The invention provides an embodiment of a display device, which adopts a curved display panel, and particularly, the curved display panel in the display device is any curved display panel provided by the invention.
By adopting the display device provided by the invention, the area of the shielding unit of the sub-pixel is larger at the position close to the central axis of the curved surface display panel of the display device, namely the position of the sub-pixel with larger front-view luminous flux, and the area of the shielding unit of the sub-pixel is smaller at the position far away from the central axis of the curved surface display panel of the display device, namely the position of the sub-pixel with smaller front-view luminous flux, so that the nonuniformity generated by the front-view luminous flux is compensated through the area difference of the shielding units, thereby improving the brightness uniformity of the curved surface display panel, being capable of improving the display effect of the curved surface display panel and enabling the display effect of the display device to be better.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. A curved-surface display panel is provided,
the curved surface display panel comprises a plurality of sub-pixels, each sub-pixel comprises a pixel electrode with a double-domain structure, and each sub-pixel comprises a first domain and a second domain;
the curved surface display panel comprises a first substrate, a second substrate and a liquid crystal layer arranged between the first substrate and the second substrate;
it is characterized in that the preparation method is characterized in that,
a shielding layer is arranged on the first substrate or the second substrate and comprises a plurality of shielding units, and the orthographic projection of each shielding unit on the sub-pixel covers the junction of the first domain and the second domain;
the display area of the curved surface display panel comprises a plurality of sub-areas, and each sub-area comprises a plurality of sub-pixels;
the first sub-area and the second sub-area are two sub-areas of the display area, wherein the distance between the center of the first sub-area and the central axis of the curved display panel is smaller than the distance between the center of the second sub-area and the central axis, and the central axis is an intersection line of a tangent plane passing through the central point of the curved display panel and the curved display panel;
the area of the shielding unit in the first sub-area is larger than that of the shielding unit in the second sub-area;
the first substrate includes a common electrode and a pixel electrode;
the curved surface display panel also comprises an integrated circuit chip, and the integrated circuit chip is connected with the common electrode through a common electrode wire; and
the shielding layer is made of metal materials, the shielding units form a plurality of shielding unit groups, every two adjacent shielding units in each shielding unit group extend oppositely to be connected, and every shielding unit group is connected with the integrated circuit chip and the common electrode.
2. The curved display panel of claim 1, wherein the area of each shielding unit of the same sub-region is the same along a direction perpendicular to the central axis and pointing from the central axis to a direction away from the central axis on the curved surface of the curved display panel, and the areas of the shielding units of different sub-regions decrease sequentially.
3. The curved display panel of claim 2,
the curved surface of the curved surface display panel is intersected with any plane vertical to the central shaft to obtain the same arc lines respectively;
the plurality of sub-pixels of the curved display panel form a plurality of pixel columns extending along the extending direction of the central axis, and each sub-area comprises one or more pixel columns.
4. The curved display panel of claim 2,
each of the sub-regions includes one of the sub-pixels.
5. The curved display panel of claim 2,
the curved surface display panel comprises a first arc edge and a second arc edge which are arranged oppositely, and further comprises a first straight edge and a second straight edge which are arranged oppositely and are respectively connected with the first arc edge and the second arc edge, wherein the first straight edge and the second straight edge form a first plane;
the vertical distance between the center of the sub-area and the first plane is the height corresponding to the sub-area;
the area S of the shielding unit in the first sub-area1And the area S of the shielding unit in the second sub-area2The following relationship is satisfied:
S1*d2＝S2*d1
wherein d is1Height corresponding to said first sub-area, d2Is the height corresponding to the second subregion.
6. The curved display panel of claim 5,the first shielding unit is any shielding unit of the display area, and the area S of the first shielding unitnThe following relationship is satisfied:
wherein R is the curvature radius of the position of the first shielding unit, SmaxThe area of the maximum shielding unit at the position with the curvature radius of R on the curved surface display panel is shown, theta is the central angle corresponding to the curved surface display panel, L is the distance between the first straight edge and the second straight edge, and xnThe distance between a foot of the center of the sub-region where the shielding unit is located on the first plane and a reference straight edge is set, wherein the reference straight edge is a straight edge of the first straight edge and the second straight edge, which is close to the center of the sub-region where the shielding unit is located.
7. The curved display panel according to any one of claims 1 to 6, wherein the shielding layer is disposed on a surface of the first substrate on a side away from the display device layer.
8. The curved display panel according to any one of claims 1 to 6, wherein the second substrate comprises a black matrix, and the blocking layer and the black matrix are disposed on the same film layer.
9. The curved display panel according to any one of claims 1 to 6,
the first substrate comprises a grid metal layer, and the shielding layer and the grid metal layer are located on the same film layer.
10. A display device comprising the curved display panel according to any one of claims 1 to 9.
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| CN107886840B (en) * | 2017-12-05 | 2020-12-08 | 京东方科技集团股份有限公司 | Special-shaped display panel, manufacturing method and device thereof and display device |
| CN108132560B (en) * | 2018-01-03 | 2020-05-22 | 厦门天马微电子有限公司 | Display panel and display device |
| CN110580852B (en) * | 2018-06-11 | 2021-06-25 | 北京鹍鹏科创科技发展有限公司 | Spherical display screen |
| CN112083597B (en) * | 2019-06-12 | 2023-09-01 | 群创光电股份有限公司 | Display, display panel and manufacturing method thereof |
| CN111009191A (en) * | 2019-12-18 | 2020-04-14 | 武汉华星光电半导体显示技术有限公司 | Display module |
| CN111766728B (en) * | 2020-06-17 | 2022-10-04 | 厦门天马微电子有限公司 | Curved surface display panel and curved surface display device |
| CN113934032B (en) * | 2020-06-29 | 2023-01-17 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof and display device |
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