KR20080040250A - Display apparutus - Google Patents

Abstract

A display device is provided to enable a first protrusion unit to space a PCB from a first side wall of a receiving member and enable an air layer existing between the PCB and the first side wall of the receiving member to insulate the PCB from the first side wall of the receiving member, thereby removing the necessity for a special insulating member for insulating the PCB from the first side wall of the receiving member. A receiving member has an upper surface and a side wall prolonged from the upper surface in one direction. A display panel(100) is mounted on the upper surface of the receiving member, and displays images in response to a driving signal. A PCB(Printed Circuit Board)(210) is electrically connected with the display panel to provide the driving signal to the display panel, and is installed as being adjacent to a first side wall(320a) among the side walls of the receiving member. The receiving member includes a first protrusion unit(331a,331b). The first protrusion unit is protruded from the first side wall of the receiving member to the PCB, and spaces the PCB from the first side wall of the receiving member.

Description

Display device {DISPLAY APPARUTUS}

1 is an exploded perspective view illustrating a liquid crystal display according to an exemplary embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line II ′ of FIG. 1.

3A is a perspective view illustrating a first sidewall of the accommodation member illustrated in FIG. 1.

3B is a perspective view illustrating a printed circuit board provided on the first sidewall of the accommodation member illustrated in FIG. 1.

FIG. 4 is an enlarged plan view partially showing II of FIG. 2.

* Description of the symbols for the main parts of the drawings *

100-LCD panel 210-Printed circuit board

300-receiving member 320a-first sidewall of the receiving member

331a, 331b-first protrusion 340-first coupling

341-3rd tightening hole 350-2nd protrusion

400-bottom chassis 500-backlight unit

600-top chassis 700-liquid crystal display

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device, and more particularly, to an display device capable of reducing assembly time and manufacturing cost of a display device.

In general, a liquid crystal display device includes a liquid crystal display panel for displaying an image, a printed circuit board for providing a driving signal to the liquid crystal display panel, and a receiving member on which the liquid crystal display panel is mounted. The printed circuit board is provided adjacent to one sidewall of the housing member.

On the other hand, as the liquid crystal display becomes larger, an insulator is formed between a sidewall of the accommodating member and the printed circuit board to form the accommodating member for supporting the liquid crystal display panel with a hard metal material and to insulate the printed circuit board and the accommodating member. Equipped.

However, the insulator is made of an adhesive film and requires a process of attaching the insulator to one side wall of the receiving member. In addition, if a failure occurs in the process of attaching the insulator, the new insulator should be attached after removing it from the receiving member. Therefore, the time and cost for providing a printed circuit board on one side wall of the housing member by using an insulator are considerable. As a result, productivity of a liquid crystal display device is reduced.

Accordingly, an object of the present invention is to provide a display device capable of reducing assembly time and manufacturing cost of the display device.

A display device according to the present invention for achieving the above object includes a housing member, a display panel and a printed circuit board.

The accommodation member has an upper surface and sidewalls extending in one direction from the upper surface. The display panel is mounted on an upper surface of the accommodating member, and displays an image in response to a driving signal. The printed circuit board is electrically connected to the display panel to provide the driving signal to the display panel, and is provided adjacent to the first sidewall among sidewalls of the accommodation member. The accommodating member includes a first protrusion protruding from the first sidewall of the accommodating member toward the printed circuit board to space the printed circuit board from the first sidewall of the accommodating member. The accommodation member is made of a metal material.

A first fastening hole is formed in the printed circuit board, and the receiving member protrudes from the first side wall toward the printed circuit board to contact the printed circuit board, and a second fastening hole corresponding to the first fastening hole at the center thereof. It includes a coupling portion formed. The accommodating member further includes a coupling member that penetrates the first and second fastening holes to couple the first and second fastening holes to fix the printed circuit board to the first sidewall.

The display device further includes a top chassis which is coupled to face the accommodating member and covers an edge portion of the display panel and a printed circuit board. The top chassis includes a second sidewall facing the first sidewall of the accommodating member, and the accommodating member protrudes from the first sidewall of the accommodating member to the second sidewall of the top chassis to protrude the printed circuit board and the top. And a second protrusion spaced apart from the first sidewall and the second sidewall such that the second sidewall of the chassis is spaced apart.

According to the display device, the printed circuit board is spaced apart from the first sidewall of the accommodating member by the first protrusion, and the printed circuit is formed by an air layer existing between the printed circuit board and the first sidewall of the accommodating member. The substrate and the first sidewall of the housing member are insulated from each other. Accordingly, a separate insulator is not required to insulate the printed circuit board and the first sidewall of the accommodating member, and as a result, assembly time and manufacturing cost of the display device can be reduced.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be applied and modified in various forms. Rather, the following embodiments are provided to clarify the technical spirit disclosed by the present invention, and furthermore, to fully convey the technical spirit of the present invention to those skilled in the art having an average knowledge in the field to which the present invention belongs. Therefore, the scope of the present invention should not be construed as limited by the embodiments described below. In addition, in the drawings presented in conjunction with the following examples, the sizes of the respective areas are simplified or somewhat exaggerated in order to emphasize clear explanations, and like reference numerals in the drawings denote like elements.

1 is an exploded perspective view illustrating a liquid crystal display according to an exemplary embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the cutting line I-I ′ of FIG. 1.

1 and 2, a liquid crystal display device 700 according to an exemplary embodiment of the present invention may include a liquid crystal display panel 100, a printed circuit board 210, a backlight unit 500, and a top chassis 600. Include.

The liquid crystal display panel 100 is mounted on the backlight unit 500 and displays an image in response to a driving signal from the printed circuit board 210. The printed circuit board 210 is electrically connected to the liquid crystal display panel 100 to provide the driving signal to the liquid crystal display panel 100.

In detail, the liquid crystal display panel 100 includes an array substrate 110, a color filter substrate 120, and a liquid crystal layer interposed between the array substrate 110 and the color filter substrate 120. It includes.

The array substrate 110 is a substrate on which a pixel array layer in which a plurality of pixels are arranged in a matrix form is formed on a first base substrate. The pixel is defined by a gate line and a data line formed to cross each other insulated from each other, and includes a thin film transistor and a pixel electrode electrically connected to the thin film transistor.

The thin film transistor switches a voltage applied to the pixel electrode. The data line applies a data signal to a corresponding thin film transistor, and the gate line applies a gate signal to a corresponding thin film transistor. Thus, each pixel applies the data signal to the pixel electrode in response to the gate signal.

The color filter substrate 120 is coupled to face the array substrate 110. The color filter substrate 120 is a substrate on which a color array layer is formed on a second base substrate. The color array layer includes a color filter layer, a black matrix and a common electrode. The color filter layer includes a plurality of color pixels corresponding to each of the plurality of pixels, and the black matrix is formed at a position corresponding to the gate line and the data line. The common electrode is disposed on the plurality of color pixels and the black matrix to face the pixel electrode. A common voltage as a reference is applied to the common electrode. Therefore, the transmittance of the liquid crystal layer is controlled according to the potential difference between the data signal and the common voltage, thereby displaying the image on the display unit of the liquid crystal display panel 100.

The liquid crystal layer is injected between the array substrate and the color filter substrates 110 and 120 by a drop injection method or a vacuum injection method. In the liquid crystal constituting the liquid crystal layer, an arrangement direction is changed according to a potential difference between the data signal and the common voltage, and transmittance of light provided from the backlight unit 500 varies according to the arrangement direction.

The liquid crystal display device 700 includes a data driving chip 221 and a gate driving chip 231 provided on one side of the liquid crystal display panel 100, respectively. The data driving chip 221 is electrically connected to the data line and outputs the data signal to the data line. The gate driving chip 231 is electrically connected to the gate line, and sequentially outputs the gate signal to the gate line.

In addition, the liquid crystal display 700 may include a first tape carrier package (TCP) 225 on which the data driving chip 221 is mounted and a second on which the gate driving chip 231 is mounted. It further includes TCP (235). The first TCP 225 electrically connects the printed circuit board 210 and the liquid crystal display panel 100.

The printed circuit board 210 is electrically connected to the liquid crystal display panel 100 to generate a driving signal for controlling the driving of the data driving chip 221 and the gate driving chip 231. The printed circuit board 210 outputs an image data signal, a data control signal, and a gate driving signal to the liquid crystal display panel 100 through the first TCP 225. The data driving chip 221 mounted on the first TCP 225 receives the data control signal and the image data signal output from the printed circuit board 210 through the first TCP 225 and the data. A signal is converted and output, and the output data signal is applied to the data line of the liquid crystal display panel 100 through the first TCP 225.

The gate driving chip 231 mounted on the second TCP 235 is connected to the printed circuit board through a signal transmission line (not shown) provided in the first TCP 225 and the liquid crystal display panel 100. The gate driving signal is received from the gate 210, the gate signal is output, and the gate signal is applied to the gate line of the liquid crystal display panel 100 through the second TCP 235.

The backlight unit 500 includes an accommodating member 300 and a bottom chassis 400. In one embodiment of the present invention, the bottom chassis 400 has a bottom surface 410 and a side wall 420 extending from an end of the bottom surface 410 to provide a storage space. A light source (not shown) for providing the light to the liquid crystal display panel 100 and an optical sheet (not shown) for adjusting the optical characteristics of the light provided from the light source to the liquid crystal display panel 100 in the storage space. Are stored in turn. The optical sheet includes a diffusion sheet for diffusing light and a prism sheet for condensing light, and the like, to improve brightness and viewing angle of the emitted light. In addition, the backlight unit 500 may be accommodated in the bottom chassis 400 under the light source, and include a reflector to reflect light from the light source toward the optical sheet.

The accommodation member 300 includes a first upper surface 310 and a sidewall 320 extending from an end of the upper surface 310. In one embodiment of the present invention, the first upper surface 310 may be formed in a frame shape. The storage member 300 is coupled to the bottom chassis 400 such that the sidewall 320 of the storage member 300 faces the sidewall 420 of the bottom chassis 400.

That is, the side wall 320 of the accommodation member 300 is provided to surround the side wall 420 of the bottom chassis 400, and the bottom chassis 400 is formed on the first upper surface 310 of the accommodation member 300. The upper side of the side wall 420. First fastening holes 311 are formed at corners of the first upper surface 310 contacting the side wall 420 of the bottom chassis 400, respectively, and the bottom chassis corresponding to the corners of the first upper surface 310 may be formed. The first grooves 411a and 411b corresponding to the first fastening holes 311 are formed in the sidewall 420 of the 400, respectively. Although not shown in the drawing, the first upper surface 310 penetrates through the first fastening hole 311 and protrudes toward the first grooves 411a and 411b to allow the first fastening hole 311 and the first groove. A first coupling member for coupling the accommodation member 300 to the bottom chassis 400 may be provided while coupling to the plurality of movements 411a and 411b, respectively. The first coupling member may be made of, for example, a screw.

The liquid crystal display panel 100 is mounted on the first upper surface 310 of the accommodating member 300, and the printed circuit board is disposed on the first sidewall 320a of the sidewall 320 of the accommodating member 300. 210 is provided adjacently. The first TCP 225 is bent toward the first sidewall 320a of the accommodating member 300 such that the printed circuit board 200 is provided adjacent to the first sidewall 320a of the accommodating member 300. do. The accommodation member 300 may be made of a metal material such as aluminum to support the liquid crystal display panel 100. A coupling structure between the first sidewall 320 and the printed circuit board 210 of the accommodation member 300 will be described later with reference to FIGS. 3A to 4.

The top chassis 600 includes a second top surface 610 and sidewalls 620 extending from the top surface 610. The top chassis 600 is coupled such that the side wall 620 of the top chassis 600 faces the side wall 320 of the accommodating member 300, thereby connecting the liquid crystal display panel 100 to the accommodating member 300. Fix it to An upper surface 610 of the top chassis 600 covers an edge portion of the liquid crystal display panel 100, and a second sidewall 620a of the sidewall 620 of the top chassis 600 is the printed circuit board ( Cover 210). Therefore, the printed circuit board 210 is provided between the second sidewall 620a of the top chassis 600 and the first sidewall 320a of the accommodation member 300.

3A is a perspective view illustrating a first sidewall of the accommodating member illustrated in FIG. 1, and FIG. 3B is a perspective view illustrating a printed circuit board provided at the first sidewall of the accommodating member illustrated in FIG. 1. It is the top view which partially cut and expanded II. 3A and 3B, the same components as those shown in FIGS. 1 and 2 are denoted by the same reference numerals, and detailed description thereof will be omitted.

3A and 3B, the accommodating member 300 protrudes from the first sidewall 320a of the accommodating member 300 toward the printed circuit board 210 to accommodate the printed circuit board 210. First protrusions 331a and 331b spaced apart from the first sidewall 320a of the member 300.

Preferably, the first protrusions 331a and 331b are provided on the first sidewalls 320a of the accommodating member 300 respectively corresponding to both ends of the printed circuit board 210. Accordingly, the first protrusions 331a and 331b protrude from the first sidewall 320a of the accommodating member 300 toward the printed circuit board 210 to be in contact with both ends of the printed circuit board 210. As described above, forming the first protrusions 331a and 331b at positions corresponding to both ends of the printed circuit board 210 may be mounted at the center of the printed circuit board 210 to generate the driving signals. This is to prevent an electrical short between the circuit element and the first protrusions 331a and 331b.

In the drawing of the present invention, an example in which the first protrusions 331a and 331b are formed long along the longitudinal direction of the first sidewall 320a is illustrated.

The printed circuit board 210 is spaced apart from the first sidewall 320a of the accommodating member by a first gap D1 by the first protrusions 331a and 331b. An air layer exists between the printed circuit board 210 and the first sidewall 320a of the accommodating member 300, and the printed circuit board 210 and the first sidewall 320a are insulated from each other by the air layer. do. Therefore, it is not necessary to provide a separate insulating member to insulate the printed circuit board 210 from the first sidewall 320a of the accommodating member 300. As a result, it is possible to reduce the cost and time required to provide the insulating member between the printed circuit board 210 and the first sidewall 320a of the accommodating member 300. Preferably, the first gap D1 is maintained at 5 mm or more to insulate the first sidewall 320a of the printed circuit board 210 and the accommodation member 300 by the air layer.

In addition, since both ends of the printed circuit board 210 are in contact with the first protrusion 331 of the accommodating member 300, electromagnetic waves generated from the printed circuit board 210 may pass through the first protrusion 331. It is transmitted to the receiving member 300 side, it may be discharged to the outside through the bottom chassis 400 and the top chassis 600 coupled to the receiving member 300.

Second fastening holes 211 are formed at both ends of the printed circuit board 210, and the printed circuit board is disposed at the first sidewall 320a of the accommodating member 300 corresponding to both ends of the printed circuit board 210. A first coupling part 340 is formed to protrude toward the substrate 210 to be in contact with the printed circuit board 210 and to have a third coupling hole 341 corresponding to the second coupling hole 211 at the center thereof. The protruding height of the first coupling part 340 is the same as the first gap D1 so that the separation distance between the printed circuit board 210 and the first sidewall 320a of the accommodation member 300 is maintained. . As shown in FIG. 4, the third fastening hole 341 is formed through the first coupling part 340 and the first sidewall 320a.

The accommodating member 300 penetrates through the second fastening hole 211 and the third fastening hole 341 to be coupled to the first and third fastening holes 211 and 341 and the printed circuit board 210. It further includes a second coupling member 370 for fixing adjacent to the first side wall (320a) of the receiving member (300). The coupling member 370 is coupled to the second and third fastening holes 211 and 341 to firmly fix the printed circuit board 210 to the first sidewall 320a of the accommodating member 300. Can be. The second coupling member 370 may be formed of, for example, a screw.

The accommodating member 300 protrudes from the first sidewall 320a of the accommodating member 300 to the second sidewall 620a of the top chassis 600 so that the second printed circuit board 210 and the top chassis are secondly disposed. The second protrusion 350 further includes a second protrusion 350 spaced apart from the first sidewall 320a and the second sidewall 620a such that the sidewall 620a is spaced apart from each other. The second protrusion 350 protrudes from the lower end of the first sidewall 320a to the second sidewall 620a of the top chassis 600 to be in contact with an end portion of the second sidewall 620a. The second protrusion 350 is formed to extend in the longitudinal direction of the first sidewall 320a of the accommodation member 300.

Since the top chassis 600 is generally made of a metal material, in order to insulate the printed circuit board 210 and the second sidewall 320a of the top chassis 600 from each other, the top of the housing member 300 may be formed. The second protrusion 350 is provided at a lower end of the first sidewall 320a to be spaced apart from the second sidewall 620a of the printed circuit board 210 and the top chassis 600. In order to space the second sidewall 620a of the printed circuit board 210 and the top chassis 600, the first sidewall 320a of the accommodating member 300 and the second sidewall of the top chassis 600 ( The separation distance D2 between 620a is greater than the sum of the thickness of the first gap D1 and the printed circuit board 210.

Meanwhile, electromagnetic waves may be transmitted from the printed circuit board 210 to the housing member 300 to the top chassis 600 through the second protrusion 350 of the housing member 300 to be emitted to the outside.

The first sidewall 320a of the accommodating member 300 and the second sidewall 620a of the top chassis are coupled to the first sidewall 320a of the accommodating member 300 and the printed circuit board 210. Combine in the same way. That is, the first sidewall 320a of the accommodation member 300 protrudes from the first sidewall 320a toward the second sidewall 620a of the top chassis 600 to be in contact with the second sidewall 620a. A second coupling part 360 having a fourth fastening hole 361 at the center is further provided. A fifth fastening hole (not shown) corresponding to the fourth fastening hole 362 is formed in the second sidewall 620a of the top chassis 600 corresponding to the region where the fourth fastening hole 361 is formed. . The accommodating member 300 penetrates through the fifth fastening hole and the fourth fastening hole 361 and couples to the fifth fastening hole and the fourth fastening hole 361, respectively, and the second of the top chassis 600. It further includes a third coupling member (not shown) for coupling the side wall 620a with the first side wall 320a of the accommodation member 300.

Meanwhile, the first protrusions 331a and 331b, the second protrusion 350, the first coupling part 340, and the second coupling part 360 are formed on the first sidewall 320a of the accommodation member 300. Since the first protrusion 331a, 331b, the second protrusion 350, the first coupling portion 340, and the second coupling portion 360 are provided separately, I don't need it.

According to such a display device, a first sidewall of the printed circuit board and the accommodating member is spaced apart from each other, and an air layer existing between the printed circuit board and the first sidewall of the accommodating member is used to determine the area of the printed circuit board and the accommodating member. The first sidewalls are insulated from each other. Therefore, it is not necessary to provide a separate insulating member for insulating the printed circuit board and the first side wall of the housing member. As a result, the assembly time and manufacturing cost of the display device can be reduced.

Claims (9)

An accommodation member having an upper surface and sidewalls extending in one direction from the upper surface; A display panel mounted on an upper surface of the accommodation member and configured to display an image in response to a driving signal; A printed circuit board electrically connected to the display panel to provide the driving signal to the display panel, the printed circuit board being provided adjacent to the first sidewall among the sidewalls of the accommodation member; And the accommodating member includes a first protrusion protruding from the first sidewall of the accommodating member toward the printed circuit board and separating the printed circuit board from the first sidewall of the accommodating member. The method of claim 1, And the first protrusion is in contact with both ends of the printed circuit board. The method of claim 1, A first fastening hole is formed in the printed circuit board, And the accommodation member includes a coupling part protruding from the first sidewall toward the printed circuit board to be in contact with the printed circuit board and having a second fastening hole corresponding to the first fastening hole in a central portion thereof. The method of claim 3, wherein The accommodating member may further include a coupling member configured to penetrate the first and second fastening holes to couple the first and second fastening holes to fix the printed circuit board to the first sidewall. Display device. The method of claim 1, And the accommodation member is made of a metal material. The method of claim 1, And a separation distance between the first sidewall of the accommodating member and the printed circuit board is 0.5 mm or more. The method of claim 1, And a top chassis coupled to the accommodating member to cover the edge portion of the display panel and the printed circuit board. The method of claim 7, wherein The top chassis includes a second sidewall facing the first sidewall of the housing member, The accommodating member protrudes from the first sidewall of the accommodating member to the second sidewall of the top chassis so as to space the first sidewall and the second sidewall such that the printed circuit board and the second sidewall of the top chassis are spaced apart from each other. The display device further comprises a projection. The method of claim 8, And the second protrusion is in contact with an end of the second sidewall of the top chassis.

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