KR102652616B1 - Liquid crystal display device - Google Patents

Abstract

The liquid crystal display device according to the present application includes a backlight unit including a light source, a panel guide that covers the light source and supports the edge of the liquid crystal display panel, and a rear cover that supports the backlight unit and the panel guide, and the panel guide is a liquid crystal display device. It includes a panel supporter that supports the edge of the panel and a stopper provided on one side of the panel supporter that covers the light source and covers a portion of the outer surface of the rear cover.

Description

Liquid crystal display device {LIQUID CRYSTAL DISPLAY DEVICE}

This application relates to liquid crystal display devices.

Generally, liquid crystal displays are used in portable electronic devices such as smart phones, smart watches, watch phones, wearable devices, tablet PCs (personal computers), and mobile communication terminals. It is widely used as a display screen for various products such as televisions, laptops, monitors, cameras, camcorders, and home appliances as well as devices.

A conventional liquid crystal display device includes a liquid crystal display panel having a liquid crystal layer, a backlight unit that irradiates light to the liquid crystal display panel, a panel guide that supports the rear edge of the liquid crystal display panel, and a rear cover that stores the panel guide and supports the backlight unit. is provided. Here, the panel guide includes a guide side wall supported by the rear cover and a panel support portion protruding from the guide side wall to support the rear edge of the liquid crystal display panel. Such a conventional liquid crystal display device displays an image on the liquid crystal display panel using light irradiated from a backlight unit to the liquid crystal display panel.

However, the conventional liquid crystal display device has a problem in that the guide side wall of the panel guide is formed in the shape of a square strip and is stored in the rear cover, thereby increasing the border width (bezel width). In particular, the liquid crystal display device has a problem in that one edge is As the light source part of the backlight unit as well as the guide side walls of the panel guide are arranged in parallel, there is a problem in that the edge width is relatively wide.

Accordingly, there is a need for a method to reduce the border width of the liquid crystal display device where the light source unit is disposed.

This application is intended to solve the problems of the background technology, and its technical task is to provide a liquid crystal display device with a reduced border width of the portion where the light source unit is disposed.

In addition, the technical task is to provide a liquid crystal display device that can prevent assembly defects that occur during the assembly process of the panel guide.

The liquid crystal display device according to the present application for achieving the above-described technical problem includes a backlight unit including a light source, a panel guide that covers the light source and supports the edge of the liquid crystal display panel, and a rear cover that supports the backlight unit and the panel guide. The panel guide is provided on one side of the panel supporter that supports the edge of the liquid crystal display panel and the light source portion, and includes a stopper that covers a portion of the outer surface of the rear cover.

The liquid crystal display device according to one example further includes a first coupling member provided on the stopper, and a second coupling member provided on the rear cover directly facing the stopper and coupled to the first coupling member.

According to the means for solving the above problem, the present application can provide a liquid crystal display device with a reduced border width of the portion where the light source unit is disposed, and a liquid crystal display device that can prevent assembly defects occurring during the assembly process of the panel guide. can be provided.

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

1 is a plan view showing a liquid crystal display device according to an example of the present application.
FIG. 2 is an exploded view of the liquid crystal display device shown in FIG. 1.
FIG. 3 is a cross-sectional view taken along line II' shown in FIG. 1.
FIG. 4 is a view showing the panel guide and rear cover shown in FIG. 2.
Figure 5 is a plan view showing a liquid crystal display device according to an example of the present application.
FIG. 6 is an exploded view of the liquid crystal display device shown in FIG. 5.
FIG. 7 is a cross-sectional view taken along line II-II' shown in FIG. 5.
FIG. 8 is a diagram showing the panel guide shown in FIG. 6.
FIG. 9 is a cross-sectional view taken along line II-II' shown in FIG. 5.

The advantages and features of the present application and methods for achieving them will become clear by referring to examples described in detail below along with the accompanying drawings. However, the present application is not limited to the examples disclosed below and will be implemented in various different forms, and only the examples of the present application are intended to ensure that the disclosure of the present application is complete and are within the scope of common knowledge in the technical field to which this application pertains. It is provided to fully inform those who have the scope of the invention, and this application is only defined by the scope of the claims.

The shape, size, ratio, angle, number, etc. disclosed in the drawings for explaining an example of the present application are illustrative, and the present application is not limited to the matters shown. Like reference numerals refer to like elements throughout the specification. Additionally, in describing the present application, if it is determined that a detailed description of related known technology may unnecessarily obscure the gist of the present application, the detailed description will be omitted.

When 'includes', 'has', 'consists of', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, the plural is included unless specifically stated otherwise.

When interpreting a component, it is interpreted to include the margin of error even if there is no separate explicit description.

In the case of a description of a positional relationship, for example, if the positional relationship of two parts is described as 'on top', 'on the top', 'on the bottom', 'next to', etc., 'immediately' Alternatively, there may be one or more other parts placed between the two parts, unless 'directly' is used.

In the case of a description of a temporal relationship, for example, if a temporal relationship is described as 'after', 'successfully after', 'after', 'before', etc., 'immediately' or 'directly' Unless used, non-consecutive cases may also be included.

Although first, second, etc. are used to describe various components, these components are not limited by these terms. These terms are merely used to distinguish one component from another. Accordingly, the first component mentioned below may also be the second component within the technical spirit of the present application.

The term “at least one” should be understood to include all possible combinations from one or more related items. For example, “at least one of the first, second, and third items” means each of the first, second, or third items, as well as two of the first, second, and third items. It can mean a combination of all items that can be presented from more than one.

Each feature of the various examples of the present application can be combined or combined with each other partially or entirely, and various technological interconnections and operations are possible, and each example can be implemented independently of each other or together in a related relationship. .

Hereinafter, a preferred example of the liquid crystal display device according to the present application will be described in detail with reference to the attached drawings. In adding reference numerals to components in each drawing, identical components may have the same reference numerals as much as possible even if they are shown in different drawings.

FIG. 1 is a plan view showing a liquid crystal display device according to an example of the present application, FIG. 2 is an exploded view of the liquid crystal display device shown in FIG. 1, and FIG. 3 is a cross-sectional view taken along line II-I' shown in FIG. 1.

1 to 3, the liquid crystal display device according to one example includes a liquid crystal display panel 100, a panel driving circuit 200, a backlight unit 300, a panel guide 500, and a rear cover 700. Includes.

The liquid crystal display panel 100 displays an image using light emitted from the backlight unit 300, and includes a lower substrate 110, an upper substrate 130, and a lower polarizing member bonded in opposition with a liquid crystal layer in between. 150, and may include an upper polarizing member 170.

The lower substrate 110 is a thin film transistor array substrate and includes a pixel array having a plurality of pixels formed in each pixel area crossed by a plurality of gate lines and a plurality of data lines. Each of the plurality of pixels includes a thin film transistor connected to a gate line and a data line, a pixel electrode connected to the thin film transistor, and a common electrode formed adjacent to the pixel electrode and supplied with a common voltage.

A pad portion connected to each signal line is provided on one edge of the lower substrate 110, and the pad portion is connected to the panel driving circuit 200.

The upper substrate 130 is a color filter array substrate and includes a pixel defining pattern defining an opening area overlapping each pixel area formed on the lower substrate 110, and a color filter layer formed in the opening area. The upper substrate 130 is bonded to the lower substrate 110 with the liquid crystal layer interposed therebetween using a sealant.

The liquid crystal layer is interposed between the lower substrate 110 and the upper substrate 130, and the arrangement direction of liquid crystal molecules changes according to the electric field formed by the data voltage and common voltage applied to the pixel electrode for each pixel. It consists of

The lower polarizing member 150 is attached to the lower surface of the lower substrate 110 and polarizes the light incident from the backlight unit 300 along a first polarization axis to irradiate it to the lower substrate 110.

The upper polarizing member 170 is attached to the upper surface of the upper substrate 130 and polarizes light that passes through the upper substrate 130 and is emitted to the outside.

In this way, the liquid crystal display panel 100 displays an image according to the light passing through the liquid crystal layer by driving the liquid crystal layer according to the electric field formed for each pixel by the data voltage and common voltage applied to each pixel.

The panel driving circuit 200 displays a color image on the liquid crystal display panel 100 by driving each pixel of the liquid crystal display panel 100. The panel driving circuit 200 according to an example includes a plurality of data driving integrated circuits 210, a plurality of gate driving integrated circuits 230, a plurality of flexible circuit films 250, a printed circuit board 270, and timing control. Includes circuit 290.

Each of the plurality of data driving integrated circuits 210 is directly mounted on the lower edge of the lower substrate 110, is connected to a plurality of data lines, and is connected to a pad portion provided on the lower substrate 110. These plurality of data driving integrated circuits 210 receive pixel data and data control signals for each pixel supplied from the timing control circuit 290, and convert the pixel data for each pixel into an analog data signal according to the data control signal. Supply to the corresponding data line.

Each of the plurality of gate driving integrated circuits 230 is directly mounted on the right edge of the lower substrate 110, is connected to a plurality of gate lines, and is connected to a pad portion provided on the lower substrate 110. These plurality of gate driving integrated circuits 230 receive a gate control signal supplied from the timing control circuit 290, generate gate pulses according to the gate control signal, and supply them to the gate line in a predetermined order.

Each of the plurality of flexible circuit films 250 is attached to a pad provided on the lower edge of the lower substrate 110. Each of these plurality of flexible circuit films 250 transfers pixel data and data control signals for each pixel supplied from the printed circuit board 270 to the plurality of data driving integrated circuits 210, and transmits pixel data and data control signals supplied from the printed circuit board 270. The gate control signal is transmitted to the plurality of gate driving integrated circuits 230.

The printed circuit board 270 is attached to each of the plurality of flexible circuit films 250. The printed circuit board 270 includes various power circuits, memory elements, and timing control circuits 290 necessary to display images in each pixel of the liquid crystal display panel 100.

The timing control circuit 290 is mounted on the printed circuit board 270 and stores digital image data input from the driving system in response to a timing synchronization signal supplied from an external driving system to the pixel arrangement structure of the liquid crystal display panel 100. Pixel data for each pixel is generated by appropriately aligning, and the generated pixel data for each pixel is provided to the plurality of data driving integrated circuits 210 . In addition, the timing control circuit 290 generates each of a data control signal and a gate control signal based on the timing synchronization signal to control the driving timing of each of the plurality of data driving integrated circuits 210 and the plurality of gate driving integrated circuits 230. Control.

Optionally, each of the plurality of data driving integrated circuits 210 may not be mounted on the lower substrate 110 but may be mounted on a plurality of flexible circuit films 250 . Additionally, each of the plurality of gate driving integrated circuits 230 may be replaced with a built-in gate driving circuit formed directly on the right edge of the lower substrate 110. The built-in gate driving circuit is formed on the right edge of the lower substrate 110 along with the thin film transistor manufacturing process for each pixel so that it is connected one-to-one with a plurality of gate lines. This built-in gate driving circuit generates gate pulses according to the input gate control signal and supplies them to the gate lines in a predetermined order.

The backlight unit 300 is arranged to overlap the liquid crystal display panel 100 and irradiates light to the rear of the liquid crystal display panel 100. The backlight unit 300 according to one example includes a light guide plate 310, a light source unit 330, a light source housing 350, a reflective sheet 370, and an optical sheet unit 390.

The light guide plate 310 is arranged to overlap the liquid crystal display panel 100 and includes a light incident surface provided on a side wall of one edge. The light guide plate 310 may include a light-transmissive plastic or glass material. This light guide plate 310 causes light incident from the light source unit 330 through the light incident surface to proceed (or emit light) toward the liquid crystal display panel 100.

The light source unit 330 radiates light to the light incident surface provided on the light guide plate 310. The light source unit 330 according to an example includes a plurality of light emitting diode elements 333 that are mounted on the printed circuit board 331 for a light source and irradiate light to the light incident surface of the light guide plate 310. Each of the plurality of light emitting diode elements 333 is mounted on the printed circuit board 331 for a light source at a set interval along the first direction (X) parallel to the longitudinal direction of the light incident surface. At this time, the spacing (or pitch) of adjacent light emitting diode elements 333 may be set to a range in which hot spots do not occur around the light receiving surface. Here, the printed circuit board 331 for a light source includes a flexible printed circuit cable.

The light source housing 350 is arranged to cover the light source unit 330. This light source housing 350 covers the light source unit 330, one edge of the light guide plate 310 having the light incident surface, and a space between the light source unit 330 and the light guide plate 310. The light source housing 350 prevents light loss and light leakage by reflecting light emitted from the light source unit 330 and incident on the light receiving surface of the light guide plate 310. The light source housing 350 according to one example includes a white colored plastic material to reflect incident light.

The light source housing 350 may be attached to the rear cover 700 and the panel guide 500 through an adhesive member 600 such as double-sided tape or adhesive. For example, one side and the other edge portion of the light source housing 350 may be attached to the panel guide 500, and the middle portion between one edge portion and the other edge portion of the light source housing 350 may be attached to the rear cover 700. can be attached to

The reflective sheet 370 covers the rear side of the light guide plate 310. This reflective sheet 370 minimizes light loss by reflecting light incident from the light guide plate 310 toward the light guide plate 310.

The optical sheet portion 390 is disposed on the front of the light guide plate 310 to improve the luminance characteristics of the light emitted from the light guide plate 310. The optical sheet unit 390 according to an example may include a lower diffusion sheet, a lower prism sheet, and an upper prism sheet, but is not limited thereto, and is not limited to a diffusion sheet, a prism sheet, and a dual brightness enhancement film (dual brightness enhancement film). hancement film) and a lenticular sheet.

The panel guide 500 is accommodated in the rear cover 700, covers the light source unit 330, and supports the edge of the liquid crystal display panel 100. The panel guide 500 includes a plastic material. The panel guide 500 according to one example includes a panel support portion 510, as shown in FIG. 4 .

The panel supporter 510 overlaps the rear edge of the liquid crystal display panel 100 and supports the rear edge of the liquid crystal display panel 100 through a panel support pad such as a cushion pad or double-sided tape. At this time, the panel supporter 510 supports the rear edge of the liquid crystal display panel 100 except for a portion of the lower edge of the liquid crystal display panel 100.

The panel support 510 according to one example includes first to fifth support parts 511, 513, 515, 517, and 519.

Each of the first to fifth support parts 511, 513, 515, 517, and 519 is provided to have a constant length and overlaps the rear edge of the liquid crystal display panel 100.

The first support portion 511 supports the first rear edge (or left rear edge) of the liquid crystal display panel 100.

The second support portion 513 supports the second rear edge (or right rear edge) parallel to the first rear edge of the liquid crystal display panel 100.

The third support part 515 is connected to one end (or upper end) of the first support part 511 and one end (or upper end) of the second support part 513 and is connected to the third rear edge (or upper end) of the liquid crystal display panel 100. or upper rear edge). The first to third support portions 511, 513, and 515 are connected to each other to have a “┏━┓” shape in plan view.

The first to third supports 511, 513, and 515 serve as main supports that only support the liquid crystal display panel 100.

The fourth support part 517 is connected to the other end (or lower end) of the first support part 511 so as to be parallel to the third support part 515, covers one side of the light source part 330, and forms the first part of the liquid crystal display panel 100. Supports one side (or left side) of the fourth rear edge (or lower rear edge) parallel to the 3 rear edge. Here, the first support part 511 and the fourth support part 517 are connected to each other to have a "┗" shape in plan.

The fifth support part 519 is connected to the other end (or lower end) of the second support part 513 so as to be parallel to the third support part 515, covers the other side of the light source part 330, and is connected to the liquid crystal display panel 100. Supports the other side (or right side) of the fourth rear edge. Here, the second support portion 513 and the fifth support portion 519 are connected to each other to have a “┛” shape in plan view.

The fourth and fifth supports 517 and 519 serve as auxiliary supports that cover the light source unit 330 and support the liquid crystal display panel 100. More specifically, the auxiliary support portion is attached to the light source housing 350 through the adhesive member 600 and thus does not flow in the thickness direction of the liquid crystal display panel 100.

The panel guide 500 according to one example further includes a guide side wall 530 that is vertically coupled to the panel support 510 and surrounds each side of the liquid crystal display panel 100.

The guide side wall 530 according to one example includes an upper guide side wall 531 and a lower guide side wall 533.

The upper guide side wall 531 is provided perpendicular to the front edge of the panel supporter 510 and surrounds each side of the liquid crystal display panel 100. That is, the upper guide side wall 531 is provided perpendicular to the front edge of each of the first to fifth support parts 511, 513, 515, 517, and 519, and covers a portion of the lower side of the liquid crystal display panel 100. Wrap each side except the remaining one. This upper guide side wall 531 has a height corresponding to the thickness of the liquid crystal display panel 100.

The lower guide side wall 531 is a part of the panel support 510, that is, is provided perpendicular to the rear edge of each of the first to third supports 511, 513, and 515, and is supported on the rear cover 700 to form the panel support. Support (510). This lower guide side wall 533 may have a height corresponding to the overall thickness of the light source unit 330 and the light source housing 350.

In the panel guide 500 according to an example, each of the first to third support parts 511, 513, and 515 has both an upper guide side wall 531 and a lower guide side wall 533, so that it has a “┣” shaped cross section. has In addition, each of the fourth and fifth supports 517 and 519 has only an upper guide side wall 531 and has a cross-section in the shape of a “┗” shape.

As such, the panel guide 500 according to one example has a shape in which one side is open so as not to cover the remaining part except for one side and the other side of the light source unit 330, thereby reducing the border width of the part where the light source unit 330 is placed. can be reduced. That is, since the panel guide 500 does not have a lower guide side wall disposed between the rear cover 700 and the light source unit 330 to surround the side of the light source unit 330, the border width of the portion where the light source unit 330 is placed is limited. can be reduced.

The rear cover 700 supports the backlight unit 300 and the panel guide 500. The rear cover 700 is the last case of the liquid crystal display device and may be made of metal or plastic. However, it is preferably made of metal to ensure the rigidity of the liquid crystal display device and to dissipate heat from the backlight unit 300.

As shown in FIG. 4 , the rear cover 700 according to one example includes a cover frame 710 and a cover side wall 730 that provide a storage space.

The cover frame 710 supports the backlight unit 300 and a portion of the panel guide 500. The cover frame 710 according to one example has a square strip shape with a central opening 700a and includes a first bottom surface 711 and a second bottom surface 713.

The first bottom surface 711 is provided in the shape of a square band and supports the panel guide 500 and the light source unit 330 of the backlight unit 300. A portion of the first bottom surface 711 directly supports the light source unit 330, and the remaining portion of the first bottom surface 711 directly supports the panel guide 500. For example, the first bottom surface 711 includes a left bottom surface, a right bottom surface, an upper bottom surface, and a lower bottom surface. The left bottom surface, right bottom surface, and upper bottom surface of the first bottom surface 711 support the lower guide side wall 533 provided on the main support part of the panel guide 500. The lower bottom surface of the first bottom surface 711 supports the light source unit 330.

The second bottom surface 713 is stepped from the first bottom surface 511 and is provided in the shape of a square band with a central opening 700a. The second bottom surface 713 supports the reflective sheet 370 of the backlight unit 300 and may be stepped from the first bottom surface 711 to have a height corresponding to the thickness of the reflective sheet 370. . This second bottom surface 513 is stepped from the first bottom surface 511, thereby increasing the rigidity of the cover frame 710. That is, the rigidity of the cover frame 710 may be increased due to the bending portion of the first bottom surface 711 and the second bottom surface 713.

The cover side wall 730 is provided at the edge of the cover frame 710 and surrounds the side of the light source unit 330 and the panel guide 500 of the backlight unit 300. That is, the cover side wall 730 is bent perpendicularly from the cover frame 710 and covers the side of the light source unit 330 and the side of the main support part constituting the panel guide 500. The cover side wall 730 prevents deformation of the panel guide 500 by wrapping the side of the panel guide 500, which is provided in a thin shape for slimming and lightening.

The cover side wall 730 according to one example includes first to fourth bending side walls 731, 733, 735, and 737.

The first bending side wall 731 (or first short side wall) is bent from the first side (or left) end of the cover frame 710 and wraps the first short side (or left side) of the panel guide 500. That is, the first bending side wall 731 surrounds the first support portion 511 of the panel guide 500 and the outer surfaces of each of the upper guide side wall 531 and lower guide side wall 533 coupled thereto.

The second bending side wall 733 (or the second short side wall) is bent from the second (or right) end of the cover frame 710 and wraps the second short side (or right side) of the panel guide 500. That is, the second bending side wall 733 surrounds the second support portion 513 of the panel guide 500 and the outer surfaces of each of the upper guide side wall 531 and lower guide side wall 533 coupled thereto.

The third bending side wall 735 (or first long side wall) is bent from the third (or upper) end of the cover frame 710 and wraps the first long side (or upper side) of the panel guide 500. That is, the third bending side wall 735 surrounds the third support portion 515 of the panel guide 500 and the outer surfaces of each of the upper guide side wall 531 and lower guide side wall 533 coupled thereto.

The fourth bent side wall 737 (or second long side wall) is bent from the fourth (or lower) end of the cover frame 710 and surrounds the light source unit 330 of the backlight unit 300. That is, the fourth bending side wall 737 surrounds the sides of each of the fourth and fifth support parts 517 and 519 of the panel guide 500 and the upper guide side wall 531 and the light source unit 330 coupled thereto.

Each of the first to third bending side walls 731, 733, and 735 has a hemming structure, that is, an inner side wall bent vertically from the cover frame 710, and an inner side wall to ensure the rigidity of the rear cover 700. It includes an outer side wall bent from the inner side wall to contact the outer side wall (or inner wall) of the side wall.

Additionally, the rear cover 700 according to one example further includes a bending cover portion 750 that covers a portion of the light source portion 330.

The bending cover part 750 is bent from one side of the cover side wall 730, more specifically, from the top of the fourth bending side wall 737, to be parallel to the cover frame 710. This bending cover part 750 covers the light source part 330 disposed between the fourth bending side wall 737 and the light guide plate 310. More specifically, the bending cover portion 750 is bent between the fourth and fifth support portions 517 and 519 of the panel guide 500 to support the light source housing 350 and the lower edge of the liquid crystal display panel 100. do. At this time, the front of the bending cover part 750 is arranged to face the liquid crystal display panel 100, and supports the lower edge of the liquid crystal display panel 100 through a panel support pad such as a cushion pad or double-sided tape. do. In addition, the rear of the bending cover part 750 is disposed to face the light source unit 330, and is coupled to the light source housing 350 by an adhesive member 600 to support the light source housing 350 covering the light source unit 330. do. Here, each of one side and the other side of the light source housing 350 that is not covered by the bending cover part 750 is coupled to the auxiliary support part of the panel guide 500 by the adhesive member 600, thereby forming the rear cover. The auxiliary support portion of the panel guide 500 that is not supported by 700 and the bending cover portion 750 may be prevented from flowing in the thickness direction of the liquid crystal display panel 100.

The bending cover part 750 is disposed between the fourth and fifth supports 517 and 519 of the panel guide 500 and separates the fourth and fifth supports 517 and 519. That is, the bending cover part 750 is a part of the auxiliary support part of the panel guide 500 that supports the liquid crystal display panel 100 that overlaps the light source part 330 by supporting the liquid crystal display panel 100 that overlaps the light source part 330. so that it can be removed. Due to this, the auxiliary support part of the panel guide 500 having the fourth and fifth support parts 517 and 519 can be separated by the bending cover part 750, and the liquid crystal display panel 100 overlaps the light source part 330. ) In this example, the portion of the panel guide 500 that overlaps the light source unit 330 is removed, thereby reducing the border width of the area where the light source unit 330 is disposed.

Additionally, the rear cover 700 according to one example further includes a first bracket 771 and a second bracket 773.

The first bracket 771 is bent in a direction opposite to the bending cover portion 750 from one side of the cover side wall 730, more specifically, from the top of the fourth bending side wall 737. The first bracket 771 is provided on the fourth bending side wall 737 located between the first bending side wall 731 and the bending cover portion 750. This first bracket 771 may be coupled to the hinge portion provided on the main body of the laptop using screws, but is not limited to this and may be coupled to the product cover covering the rear cover 700 using screws. The first bracket 771 includes at least one screw through hole 771h through which the threaded portion of the screw penetrates.

The inner wall of the first bracket 771 is parallel to and directly faces the fourth support part 517 of the panel guide 500, so that the fourth support part 517 of the panel guide 500 is not provided with a lower guide side wall. It also serves to prevent the fourth bending side wall 737 from flowing in the outward direction. That is, one end of the fourth support part 517 is coupled to the first support part 511 of the panel guide 500, while the other end of the fourth support part 517 remains simply attached to the light source housing 350. do. Accordingly, the other end of the fourth support portion 517 flows in the outer direction of the fourth bending side wall 737 due to external force or alignment error in the assembly position when assembling the panel guide 500 to the rear cover 700, In this case, cracks may occur in the liquid crystal display panel 100 due to poor assembly of the liquid crystal display panel 100 or interference with the panel guide 500. In this example, in order to prevent the fourth support portion 517 from moving, the inner wall of the first bracket 771 is provided to be parallel to and directly face the fourth support portion 517 of the panel guide 500.

The second bracket 773 is bent in a direction opposite to the bending cover portion 750 from one side of the cover side wall 730, more specifically, from the top of the fourth bending side wall 737. The second bracket 773 is provided on the fourth bending side wall 737 located between the second bending side wall 733 and the bending cover portion 750 to be parallel to the first bracket 771. Like the first bracket 771, this second bracket 773 can be coupled to the hinge portion provided on the main body of the laptop with screws, but is not limited to this and can be attached to the product cover covering the rear cover 700 with screws. can be combined The second bracket 773 includes at least one screw through hole 773h through which the threaded portion of the screw penetrates.

The inner wall of the second bracket 773 is parallel to and directly faces the fifth support part 519 of the panel guide 500, so that the fifth support part 519 of the panel guide 500 is not provided with a lower guide side wall. It also serves to prevent the fourth bending side wall 737 from flowing in the outward direction.

Additionally, the rear cover 700 according to one example is provided in parallel with the third bracket 775 and the second bracket 773 provided on one side of the third bending side wall 735 to be parallel to the first bracket 771. 3 It may further include a fourth bracket 777 provided on the other side of the bending side wall 735. Each of the third bracket 775 and the fourth bracket 777 has the same structure as the first bracket 771 and the second bracket 773, except that it is provided on the third bending side wall 735. , redundant explanation for this will be omitted.

Meanwhile, since the liquid crystal display panel 100 overlapping the light source unit 330 can be supported by the bending cover unit 750, all auxiliary supports of the panel guide 500 may be removed, but the bending cover unit 750 must be bent from the entire fourth bending side wall 737 to cover one side and the other side of the light source unit 330, but due to limitations in the bending process, the entire fourth bending side wall 737 is bent to form the bending cover unit 750. cannot be provided, and in particular, the first bracket 771 and the second bracket 773 cannot be provided from the fourth bending side wall 737, so they play the same role as the first bracket 771 and the second bracket 773. There is a problem in that a separate bracket must be manufactured and connected to the fourth bending side wall 737. Therefore, in this example, the bending cover part 750 is prepared by bending a part of the fourth bending side wall 737, and each of one side and the other side of the light source part 330 that is not covered by the bending cover part 750 is By providing auxiliary supports, that is, fourth and fifth supports 517 and 519, on the panel guide 500 to cover it, there is no need for a separate bracket for coupling with the hinge provided on the main body of the laptop, and a separate bracket can be used on the rear cover. There is no need for a bonding process to (700).

In addition, the rear cover 700 according to one example is bent from one side of the cover frame 710 supporting the light source unit 330 and includes a plurality of support brackets ( 791, 793). Each of the plurality of support brackets 791 and 793 is cut from one side of the cover frame 710 supporting the light source unit 330 and bent at least once toward the back of the printed circuit board 270 to form a back of the printed circuit board 270. Supports and is coupled to the printed circuit board 270 by a substrate fixing screw that passes through the printed circuit board 270. At this time, the printed circuit board 270 includes a ground electrode that is coupled and electrically connected to each of the plurality of support brackets 791 and 793. Accordingly, when the rear cover 700 is made of a metal material, it can serve to electrically ground the ground electrode provided on the printed circuit board 270.

Meanwhile, the liquid crystal display device according to this example includes a front case covering the remaining front edge excluding the display area of the liquid crystal display panel 100, a pad portion provided on the liquid crystal display panel 100, and a panel driving circuit 200. It may further include a cover shield, and a gap fill member disposed in the gap space between the front case and the lower substrate 110.

In the liquid crystal display device according to this example, since the panel guide 500 is not disposed between the light source portion 330 and the cover side wall 730, the border width of the portion where the light source portion 330 is disposed can be reduced.

FIG. 5 is a plan view showing a liquid crystal display device according to an example of the present application, FIG. 6 is an exploded view of the liquid crystal display device shown in FIG. 5, and FIG. 7 is a cross-sectional view taken along line II-II' shown in FIG. 5. FIG. 8 is a diagram showing the panel guide shown in FIG. 6, which is configured by adding a stopper to the panel guide in the liquid crystal display device shown in FIGS. 1 to 4. Accordingly, hereinafter, only the panel guide and its related components will be described, and redundant description of the remaining components will be omitted.

Referring to FIGS. 5 to 8 , in the liquid crystal display device according to this example, the panel guide 500 includes a panel supporter 510 and a stopper 550.

As described above, the panel support 510 includes first to fifth support parts 511, 513, 515, 517, and 519, and redundant description thereof will be omitted.

The stopper 550 is provided on one side of the panel support part 510 that covers the light source part 330 of the backlight unit 300 and covers a portion of the outer surface of the back cover 700, thereby covering the light source part 330. ) prevents one side from flowing toward the center of the liquid crystal display device. Specifically, the stopper 550 according to one example is an auxiliary support part of the panel guide 500, that is, the fourth and fourth of the panel guide 500, so as to cover a portion of the outer surface of the cover side wall 730 provided on the rear cover 700. The fifth supports 517 and 519 protrude from one side of each. In other words, the stopper 550 according to one example is provided at each end of the fourth and fifth support parts 517 and 519 of the panel guide 500 adjacent to the bending cover part 750. The stopper 550 provided on the fourth support portion 517 is disposed between the bending cover portion 750 and the first bracket 771, and the stopper 550 provided on the fifth support portion 519 is a bending cover. It is disposed between the part 750 and the second bracket 773. Accordingly, although the stopper 550 is disposed on the outer surface of the rear cover 700, it does not affect the width of the edge portion where the light source unit 330 is disposed.

The stopper 550 according to one example may have a cross-section in the shape of a “┏” shape when viewed directly from the side along the longitudinal direction of the light source unit 330. That is, the stopper 550 is parallel to the horizontal protrusion 551 protruding from the ends of each of the fourth and fifth supports 517 and 519 toward the outer portion of the rear cover 700, and the cover side wall 730. It may have a “┏” shaped cross section including a vertical protrusion 553 protruding from the end of the horizontal protrusion 551. The vertical protrusion 553 is physically attached to the cover side wall 730, that is, the fourth bending side wall 737, when each of the fourth and fifth supports 517 and 519 moves toward the center of the liquid crystal display panel 100. By being in contact with each other, the fourth and fifth support parts 517 and 519 are prevented from moving toward the center of the liquid crystal display panel 100.

For reference, if each of the fourth and fifth supports 517 and 519 is capable of moving toward the center of the liquid crystal display panel 100, the fourth and fifth supports 517 may be damaged due to poor assembly of the panel guide 500. , 519) each flows in the center direction of the liquid crystal display panel 100, and when the liquid crystal display panel 100 is assembled in this floating state of the panel guide 500, assembly defects of the liquid crystal display panel 100 may occur. This causes cracks to occur in the liquid crystal display panel 100 due to interference between the liquid crystal display panel 100 and the panel guide 500. Accordingly, in this example, each of the fourth and fifth supports 517 and 519 of the panel guide 500 is connected to a liquid crystal display panel by a stopper 550 provided at each end of the fourth and fifth supports 517 and 519. By preventing the flow in the direction of the center of (100), assembly defects of the panel guide 500 do not occur, and this prevents cracks occurring in the liquid crystal display panel 100 due to assembly defects of the panel guide 500. You can.

In addition, each of the fourth and fifth support portions 517 and 519 of the panel guide 500 may move toward the outer portion of the rear cover 700, which, as described above, is connected to the first and second brackets ( 571, 573). Accordingly, in this example, each of the fourth and fifth supports 517 and 519 of the panel guide 500 is supported in both directions in the horizontal direction by the first and second brackets 571 and 573 as well as the stopper 550. Flow is fundamentally prevented.

Additionally, the liquid crystal display device according to this example further includes a first coupling member 560 and a second coupling member 760, as shown in FIG. 9 .

The first coupling member 560 is provided on the stopper 550. That is, the first coupling member 560 is provided on the inner surface of the stopper 550 facing the cover side wall 730 of the rear cover 700. For example, the first coupling member 560 may be a coupling protrusion that protrudes from the inner surface of the stopper 550 to have a stepped surface and an inclined surface.

The second coupling member 760 is provided on the rear cover 700 directly facing the stopper 550 and is coupled to the first coupling member 560. That is, the second coupling member 760 is provided on the cover side wall 730 of the rear cover 700 directly facing the stopper 550. For example, the second coupling member 760 may be a coupling hole penetrating the cover side wall 730 so that the first coupling member 560 can be inserted.

When assembling the panel guide 500, the stopper 550 is bent toward the outer portion of the rear cover 700 by contact between the inclined surface of the first coupling member 560 and the outer surface of the cover side wall 730. , the first coupling member 560 is inserted into the second coupling member 760 by elastic restoring force. Accordingly, the second coupling member 760 prevents the panel guide 500 from moving up and down by restraining the stepped surface of the first coupling member 560.

As such, in the liquid crystal display device according to the present example, the stopper 550 prevents the panel guide 500 from moving, thereby preventing assembly defects that occur during the assembly process of the panel guide 500.

Meanwhile, the liquid crystal display device according to the present application can be applied to portable electronic devices, televisions, laptops, monitors, cameras, camcorders, or home appliances. Here, portable electronic devices include electronic notebooks, e-books, portable multimedia players (PMPs), navigation, smart phones, mobile phones, personal computers (tablet PCs), smart watches, and watch phones. ), wearable devices, and mobile communication terminals.

The present application described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the technical field to which this application belongs that various substitutions, modifications, and changes are possible without departing from the technical details of the present application. It will be clear to those who have the knowledge of. Therefore, the scope of the present application is indicated by the claims described later, and the meaning and scope of the claims and all changes or modified forms derived from the equivalent concept should be interpreted as being included in the scope of the present application.

100: liquid crystal display panel 200: panel driving circuit
300: backlight unit 310: light guide plate
330: light source unit 350: light source housing
500: panel guide 510: panel support
530: Guide side wall 550: Stopper
560: first coupling member 700: rear cover
710: Cover frame 730: Cover side wall
750: bending cover part 760: second coupling member
771: 1st bracket 773: 2nd bracket

Claims (12)

A backlight unit including a light source unit;
a liquid crystal display panel overlapping the backlight unit;
a panel guide that covers the light source unit and supports an edge of the liquid crystal display panel; and
Provided with a rear cover supporting the backlight unit and the panel guide,
The panel guide is,
a panel supporter supporting an edge of the liquid crystal display panel;
a stopper provided on one side of the panel support covering the light source unit and covering a portion of the outer surface of the rear cover;
a first coupling member provided on the stopper; and
It includes a second coupling member provided on the rear cover directly facing the stopper and coupled to the first coupling member,
The panel support part,
a main support portion supporting only the liquid crystal display panel; and
An auxiliary support part covers the light source part and supports the liquid crystal display panel,
The rear cover is,
a cover frame supporting the backlight unit;
a cover side wall provided at an edge of the cover frame;
A bending cover part that is bent from one side of the cover side wall parallel to the light source part and covers the light source part,
The liquid crystal display device wherein the auxiliary support part is separated by the bending cover part. A backlight unit including a light source unit;
a liquid crystal display panel overlapping the backlight unit;
a panel guide that covers the light source unit and supports an edge of the liquid crystal display panel; and
Provided with a rear cover supporting the backlight unit and the panel guide,
The panel guide is,
a panel supporter supporting an edge of the liquid crystal display panel; and
A stopper provided on one side of the panel support covering the light source unit and covering a portion of the outer surface of the rear cover,
The panel support part,
a main support portion supporting only the liquid crystal display panel; and
An auxiliary support part covers the light source part and supports the liquid crystal display panel,
The stopper protrudes from one side of the auxiliary support portion to cover a portion of the outer surface of the rear cover,
The rear cover is,
a cover frame supporting the backlight unit;
a cover side wall provided at an edge of the cover frame;
A bending cover part that is bent from one side of the cover side wall parallel to the light source part and covers the light source part,
The liquid crystal display device wherein the auxiliary support part is separated by the bending cover part. According to claim 2,
The cover sidewall surrounds a side surface of the light source unit and a side surface of the main support unit. delete According to claim 1,
Further comprising a light source housing attached to the bending cover portion to cover the light source portion,
The liquid crystal display device wherein the auxiliary support part is attached to the light source housing. According to claim 1,
The panel support part,
a first support portion supporting a first rear edge of the liquid crystal display panel;
a second support portion supporting a second rear edge parallel to the second rear edge of the liquid crystal display panel;
a third support part connected to one end of the first support part and one end of the second support part and supporting a third rear edge of the liquid crystal display panel;
a fourth support part connected to the other end of the first support part parallel to the third support part, covering one side of the light source part, and supporting one side of a fourth rear edge parallel to the third rear edge of the liquid crystal display panel; and
a fifth support portion connected to the other end of the second support portion parallel to the third support portion, covering the other side of the light source portion and supporting the other side of the fourth rear edge of the liquid crystal display panel;
The stopper is provided on one side of each of the fourth support part and the fifth support part. According to claim 6,
The stopper is provided at each end of the fourth support part and the fifth support part adjacent to the bending cover part. According to claim 7,
Further comprising a light source housing attached to the bending cover portion to cover the light source portion,
Each of the fourth support portion and the fifth support portion is attached to the light source housing. According to claim 7,
The rear cover is,
a first bracket bent from one side of the cover side wall in a direction opposite to the bending cover part and surrounding a side of the fourth support part; and
The liquid crystal display device further includes a second bracket bent from one side of the cover side wall to be parallel to the first bracket and surrounding a side of the fifth support portion. According to clause 9,
A stopper provided on the fourth support portion is disposed between the first bracket and the bending cover portion,
A stopper provided on the fifth support portion is disposed between the second bracket and the bending cover portion. The method according to any one of claims 1 to 3 and 5 to 10,
The stopper has a “┏”-shaped cross section when viewed from the side. According to claim 1,
The panel support part,
a main support portion supporting only the liquid crystal display panel; and
An auxiliary support part covers the light source part and supports the liquid crystal display panel,
The stopper protrudes from one side of the auxiliary support portion to cover a portion of an outer surface of the rear cover.

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