KR20090092575A - Liquid crystal display device - Google Patents

Abstract

A liquid crystal display device is provided to design a guide panel having a dustproof hole which is a route through which dust can be discharged, thereby preventing dust from remaining inside. A bottom case(140) receives a backlight unit. A guide panel(130) of a frame shape is connected to the bottom case. The guide panel is arranged on the backlight unit. The guide panel has a plurality of dustproof holes(131). A liquid crystal panel(110) is arranged on the guide panel. A top case(100) covers an upper outline and a side of the liquid crystal panel. The top case is connected to the bottom case and the guide panel.

Description

Liquid crystal display {LIQUID CRYSTAL DISPLAY DEVICE}

The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device capable of preventing contamination on a screen caused by fine dust through a dustproof design.

Liquid crystal display devices have been used in various fields as well as notebook PC and monitor market due to small size, light weight and low power consumption.

The liquid crystal display device includes a liquid crystal panel and a backlight unit. The backlight unit provides light to the liquid crystal panel, and the light passes through the liquid crystal panel. In this case, the liquid crystal panel displays an image by adjusting the transmittance of the light.

The liquid crystal panel and the backlight unit are protected by a support and an external impact by the various parts to be fastened. That is, the liquid crystal display includes a bottom case accommodating a backlight unit, a guide panel fastened to the bottom case to support the liquid crystal panel on the backlight unit, and the bottom case, the liquid crystal panel, and the guide panel are the liquid crystal panel. It is coupled to each other by a top case covering the edge of the upper side of the support.

In the module process of the liquid crystal display, an air blow process is performed before the top case is fastened to remove foreign substances introduced into the liquid crystal display. As a result, it is possible to prevent an image quality defect in which the display surface for displaying an image is contaminated by foreign matter introduced into the liquid crystal display.

However, in the liquid crystal display device, the liquid crystal panel and the backlight unit are accommodated in a bottom case which is a storage container of a rectangular parallelepiped having one surface open, and the liquid crystal panel is supported by a guide panel interposed between the liquid crystal panel and the backlight unit. The guide panel also has a rectangular frame shape. That is, since there is no outlet for air to be discharged when performing the air blow process, even if the air blow process is performed to remove dust inside the liquid crystal display, the dust may not be discharged to the outside and remain inside. Can be.

In addition, since the air is difficult to be easily discharged, the optical sheets of the backlight unit are excited by the air, thereby causing wrinkles of the optical sheets.

An object of the present invention is to design a guide panel having a dust-proof hole that is a route that can release dust in the air blow process, to prevent the dust from remaining inside and to prevent the formation of wrinkles in the optical sheet The present invention provides a liquid crystal display device.

In order to achieve the above technical problem, an aspect of the present invention provides a liquid crystal display device. The liquid crystal display includes a backlight unit for forming light, a bottom case accommodating the backlight unit, a guide panel having a frame shape coupled to the bottom case and disposed on the backlight unit, and having a plurality of dustproof holes, on the guide panel. And a top case covering the upper edge and side surfaces of the liquid crystal panel and fastened to the bottom case and the guide panel.

According to the liquid crystal display of the present invention, the guide panel having a dustproof hole as a route through which dust can be discharged in an air blow process can prevent dust from remaining inside, thereby deteriorating image quality due to dust. Can be prevented.

The liquid crystal display of the present invention can prevent wrinkles formed in the optical member as air is smoothly discharged through the dustproof hole in the air blow process.

1 is a perspective view of a liquid crystal display according to a first embodiment of the present invention.

2 is a perspective view of a guide panel according to a first embodiment of the present invention.

3 is a cross-sectional view of a liquid crystal display device according to a first embodiment of the present invention.

4 is a cross-sectional view of a liquid crystal display device according to a second embodiment of the present invention.

 (Explanation of reference numerals for the main parts of the drawings)

100, 200: top case 201: insertion projection

110: liquid crystal panel 120: backlight unit

130: guide panel 131: dustproof hole

140: bottom case

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings of the liquid crystal display. The following embodiments are provided as examples to sufficiently convey the spirit of the present invention to those skilled in the art. Accordingly, the invention is not limited to the embodiments described below and may be embodied in other forms. In the drawings, the size and thickness of the device may be exaggerated for convenience. Like numbers refer to like elements throughout.

1 is a perspective view of a liquid crystal display according to a first embodiment of the present invention.

Referring to FIG. 1, the LCD may include a liquid crystal panel 110 displaying an image, a backlight unit 120 providing light to the liquid crystal panel 110, and a top case covering a side portion of the liquid crystal panel 110. 100).

The liquid crystal panel 110 is bonded to an array substrate having a plurality of pixels in a matrix form and a color filter substrate in which at least three color filters are formed in a matrix form at a predetermined interval from each other. At this time, the liquid crystal is interposed between the two substrates. In addition, a gate printed circuit board connected to a gate pad part of the liquid crystal panel 110 to apply a driving signal may be formed on one side of the liquid crystal panel 110 in a tape carrier package (TCP) method. Can be attached.

In addition, the other side of the liquid crystal panel 110 is connected to the data pad unit provided in the liquid crystal panel 110, a data printed circuit board for applying a data signal is a TCP (tape carrier package) Can be attached in a manner.

The backlight unit 120 is positioned on the rear surface of the liquid crystal panel 110 to provide light to the liquid crystal panel 110.

The backlight unit 120 includes a lamp 121 and an optical member 122 disposed on the lamp 121. The optical member 122 makes the lamp 121 invisible to the user and diffuses the light into the liquid crystal panel 110 to uniformly inject light into the liquid crystal panel 110, the prism sheet 122b, and the protective sheet 122c. ) May be included.

The backlight unit 120 is stored and fixed in the bottom case 140. The bottom case 140 may include a bottom surface and sidewalls extending from the bottom surface to accommodate the backlight unit 120. That is, the bottom case 140 may have a form of a rectangular parallelepiped with one surface opened. The material of the bottom case 140 is not particularly limited, but may be made of aluminum having high thermal conductivity and light characteristics.

In addition, it may further include a support side (not shown) fastened to both sides of the bottom case 140 to fix both sides of the lamp 121, respectively.

In addition, the backlight unit 120 reflects the light leaking from the lower surface of the lamp 121 to reflect the light efficiency of the reflector plate 123 interposed between the lamp 121 and the bottom case 140 to improve the light efficiency. It may include.

Accordingly, the top case 160 is positioned on the liquid crystal panel 110, and the bottom case 140 is positioned below the backlight unit 120. Here, the top case 160 and the bottom case 140 are fastened to each other to fix and protect the liquid crystal panel 110 and the backlight unit 120.

In addition, the liquid crystal display prevents contact between the backlight unit 120 and the optical member 122 and substantially guides the optical member 122 and the liquid crystal panel 110. 130) may be further included. That is, the optical member 122 has a rectangular frame shape and may be disposed at an edge of the optical member.

Accordingly, when the liquid crystal display performs the air blow process for removing dust, there is no path through which the dust can be discharged. In order to solve this, in the embodiment of the present invention, a plurality of dustproof holes 131 are formed in the guide panel 130.

2 is a perspective view of a guide panel according to a first embodiment of the present invention.

3 is a cross-sectional view of a liquid crystal display device according to a first embodiment of the present invention.

2 and 3, the guide panel 130 has a rectangular frame shape. However, the shape of the guide panel 130 is not limited. That is, the guide panel 130 may have various shapes according to the design of the liquid crystal display device.

The guide panel 130 includes a plurality of dustproof holes 131 penetrating from the outside to the inside. Accordingly, during the air blow process, foreign substances such as dust may be discharged to the outside through the dustproof holes 131.

The plurality of dustproof holes 131 are described as being formed in three on each side wall constituting the guide panel 130, but is not limited thereto.

In addition, air remains inside the dustproof holes 131 to prevent the optical member 122 from being lifted up from the guide panel 130, thereby preventing wrinkles on the optical member 122.

In order to prevent foreign matter from being introduced again through the dustproof holes 131, the dustproof holes 131 are covered by the top case 100.

In addition, in order to prevent dust from being introduced even before the top case 100 is fastened through the dustproof holes 131 or when the top case 100 is fastened, the dustproof holes 131 are the guides. The panel 130 may have an inclination inclined at a predetermined angle. That is, the dustproof holes 131 may have a slope inclined at a predetermined angle with respect to the bottom surface of the bottom case 140.

Therefore, as the dustproof hole 131 is formed in the guide panel 130 in the first embodiment of the present invention, foreign matter remaining in the liquid crystal display device in the air blow process can be completely discharged. Image quality can be prevented.

In addition, the dustproof hole 131 may be prevented from being easily introduced into the foreign matter according to a predetermined slope.

In the embodiment of the present invention, the dustproof hole 131 is shown as having a uniform diameter, but is not limited thereto. That is, the diameter of the dustproof hole 131 may be smaller than the outside of the guide panel than the inside of the guide panel. This is to prevent foreign substances from being easily introduced through the dustproof hole 131.

4 is a cross-sectional view of a liquid crystal display device according to a second embodiment of the present invention. The second embodiment of the present invention has the same configuration as the first embodiment described above except for the top case. Therefore, in the second embodiment of the present invention, the same components as the first embodiment will be denoted by the same reference numerals, and repeated descriptions thereof will be omitted.

Referring to FIG. 4, the liquid crystal display device is coupled to the backlight unit 120 forming light, the bottom case 140 accommodating the backlight unit 120, the bottom case 140, and the backlight unit 120. A guide panel 130 having a frame shape having a plurality of dustproof holes 131, a liquid crystal panel 110 disposed on the guide panel 130, and an upper edge and side surfaces of the liquid crystal panel 110. The top case 200 covers the bottom case 140 and the guide panel 130.

The top case 200 has insertion protrusions 201 inserted into the dustproof holes 131.

Accordingly, the insertion protrusion 201 may prevent foreign substances from being introduced into the dustproof hole 131.

In addition, as the insertion protrusion 201 is inserted into the anti-vibration hole 131, the assembly fastening property between the top case 200 and the guide panel 130 may be improved, thereby improving durability of the liquid crystal display device. You can.

The insertion protrusion 201 may be integrally formed with the top case 200. Alternatively, the insertion protrusion 201 may be inserted into the dustproof hole 131 separately from the top case 200.

Therefore, as the dustproof hole 131 is formed in the guide panel 130 in the exemplary embodiment of the present invention, foreign matter remaining in the liquid crystal display device in the air blow process may be completely discharged, thereby causing poor image quality. Can be prevented.

In addition, the dustproof hole 131 is inserted into the insertion protrusion 201, it is possible to prevent the foreign matter is introduced again through the dustproof hole (131).

Claims (4)

A backlight unit for forming light; A bottom case accommodating the backlight unit; A frame guide panel coupled to the bottom case and disposed on the backlight unit and having a plurality of dustproof holes; A liquid crystal panel disposed on the guide panel; And And a top case covering the upper edge and side surfaces of the liquid crystal panel and fastened to the bottom case and the guide panel. The method of claim 1, The top case further comprises an insertion protrusion inserted into the dustproof hole. The method of claim 1, And the dustproof hole has a predetermined angle inclined with respect to the guide panel. The method of claim 1, And the dustproof hole is covered by the top case.