KR20100001670A - Liquid crystal display devic(310)e - Google Patents

Abstract

PURPOSE: A liquid crystal display device is provided to improve the coupling force between a frame and a light guide plate by the first extending unit. CONSTITUTION: A light guide plate(220) is arranged in the inner sides of frames(110,120). In the light guide plate, a groove is formed. The first extending unit(130) is extended from the inner side of the frame. The first extending unit is arranged inside the groove. A liquid crystal panel is arranged on the light guide plate. A light source is arranged on the side of the first extending unit. The second extending unit is extended from the side of the light guide plate. The second extending unit is overlapped with the first extending unit.

Description

Liquid crystal display device {LIQUID CRYSTAL DISPLAY DEVIC (310) E}

An embodiment relates to a liquid crystal display device.

As information processing technology develops, display devices such as LCD, PDP and AMOLED are widely used.

In particular, LCD is widely used as a portable display device, and has a drive element such as a driver IC for driving the LCD.

Such drive elements must be protected from external shocks.

The embodiment provides a liquid crystal display device having improved strength and protecting an internal driving device.

In an embodiment, a liquid crystal display includes a frame; A light guide plate disposed inside the frame and having a groove formed therein; And a first extension part extending from the inner surface of the frame and disposed inside the groove.

In the liquid crystal display according to the embodiment, the coupling force between the frame and the light guide plate is improved by the first extension part.

Further, when a drive element such as a driver IC is disposed corresponding to the first extension, the liquid crystal display device according to the embodiment can protect the drive element from an external impact.

In the description of the embodiments, each panel, member, frame, sheet, or substrate is described as being formed "on" or "under" of each panel, member, frame, sheet, or substrate. In the case, “on” and “under” include both being formed “directly” or “indirectly” through other components. In addition, the criteria for the top or bottom of each component will be described with reference to the drawings. The size of each component in the drawings may be exaggerated for description, and does not mean a size that is actually applied.

1 is an exploded perspective view illustrating a liquid crystal display according to an embodiment. 2 is a plan view illustrating a mold frame, a light guide plate, and a light emitting diode. FIG. 3 is a cross-sectional view taken along the line A-A 'of FIG. 2. 3 illustrates components other than a mold frame, a light guide plate, and a light emitting diode.

1 to 3, the LCD includes a mold frame 100, a backlight assembly 200, a liquid crystal panel 300, and a driver IC 310.

The mold frame 100 accommodates the backlight assembly 200 and the liquid crystal panel 300. The mold frame 100 has a rectangular frame shape. Examples of materials that may be used as the mold frame 100 include plastic or reinforced plastic.

The mold frame 100 includes a first frame 110, a second frame 120, and a first extension 130.

The first frame 110 accommodates the backlight assembly 200 and surrounds the side surface of the backlight assembly 200. The first frame 110 has a rectangular frame shape and supports the side surface of the backlight assembly 200.

In addition, the first frame 110 is disposed under the liquid crystal panel 300 to support a lower portion of the liquid crystal panel 300.

Two accommodating parts 111 and 112 are formed in the first frame 110 to accommodate the light emitting diodes 230 that generate light.

The second frame 120 is disposed on the first frame 110 and forms a step with the first frame 110. The second frame 120 surrounds the side of the liquid crystal panel 300 and supports the side of the liquid crystal panel 300.

The first extension part 130 extends from an inner side surface of the mold frame 100. In more detail, the first extension part 130 extends from an inner side surface of the first frame 110.

The thickness H2 of the first extension part 130 is smaller than the thickness H1 of the first frame 110. The thickness H2 of the first extension part 130 may be 1/3 to 1/2 of the thickness H1 of the first frame 110.

The first extension part 130 is disposed between the accommodating parts 111 and 112. That is, the accommodating parts 111 and 112 are formed at both sides of the first extension part 130. In addition, the first frame 110, the second frame 120, and the first extension 130 are integrally formed.

The backlight assembly 200 is disposed inside the mold frame 100. In more detail, the backlight assembly 200 is disposed inside the first frame 110, and the side surface is surrounded by the first frame 110.

The backlight assembly 200 emits light by emitting light upward. The backlight assembly 200 includes a reflective sheet 210, a light guide plate 220, a second extension 240, a light emitting diode 230, and an optical sheet 250.

The reflective sheet 210 reflects light generated from the light emitting diode 230 upwards.

The light guide plate 220 is disposed on the reflective sheet 210, receives light emitted from the light emitting diode 230, and emits light upward by reflection, scattering, and refraction.

A groove 221 is formed in the light guide plate 220 to correspond to the first extension part 130. That is, the first extension part 130 is disposed inside the groove 221. In this case, the depth of the groove 221 may be substantially the same as the thickness (H2) of the first extension portion 130. In more detail, the first extension part 130 may be fastened to the groove 221.

Two light emitting diodes 230 are disposed inside the accommodating parts 111 and 112. In this case, the first extension part 130 and the second extension part 240 are disposed between the light emitting diodes 230.

The second extension part 240 extends from the side surface of the light guide plate 220. In this case, the second extension part 240 is disposed below the first extension part 130. That is, the first extension part 130 and the second extension part 240 overlap each other in plan view.

In addition, the second extension part 240 extends from the side surface on which the groove 221 is formed. The thickness H4 of the second extension part 240 is smaller than the thickness H3 of the light guide plate 220. In addition, the thickness H2 of the first extension part 130 is also smaller than the thickness H3 of the light guide plate 220.

In this case, the thickness H4 of the second extension part 240 is 1/3 to 1/2 of the thickness H3 of the light guide plate 220. In addition, the first extension part 130 and the second extension part 240 may contact each other, and the inner surface of the groove 221 and the first extension part 130 may contact each other.

In addition, the second extension part 240 and the light guide plate 220 are integrally formed.

The optical sheet 250 is disposed on the light guide plate 220. The optical sheet 250 improves the characteristics of the light passing through.

The liquid crystal panel 300 is disposed inside the mold frame 100. The liquid crystal panel 300 is disposed on the first frame 110, and the side surface is surrounded by the second frame 120. An image is displayed by adjusting the intensity of light passing through the liquid crystal panel 300 in units of pixels.

The liquid crystal panel 300 includes a TFT substrate, a color filter substrate, a liquid crystal layer interposed between the two substrates, and polarization filters disposed on the TFT substrate and under the color filter substrate.

The driver IC 310 for driving the liquid crystal panel 300 is mounted on the liquid crystal panel 300. The driver IC 310 is mounted in a chip on glass (COG) method.

The driver IC 310 is a semiconductor chip in which a plurality of circuits for driving the liquid crystal panel 300 are integrated. The driver IC 310 has a bar shape extending in one direction.

The driver IC 310 corresponds to the first extension 130. That is, when viewed in plan, the driver IC 310 and the first extension 130 overlap each other.

Since the first extension part 130 is coupled to the groove 221, the light guide plate 220 and the mold frame 100 are strongly coupled to each other. Accordingly, the liquid crystal display according to the embodiment has improved strength.

In addition, since the first extension part 130 and the second extension part 240 are disposed to correspond to the driver IC 310, the driver IC 310 may be formed of the first extension part 130 and the first extension part 130. Protected by a second extension 240.

That is, when pressure is applied to the boundary between the mold frame 100 and the light guide plate 220, the first extension part 130, the groove 221, and the second extension part 240 may be used. Less pressure is applied to the driver IC 310.

In other words, in the liquid crystal display without the first extension part 130, the groove 221, and the second extension part 240, the inner surface of the mold frame 100 and the side surface of the light guide plate 220 are opposite to each other. When pressure is applied to the opposite boundary, it bends better than the liquid crystal display of this embodiment. Accordingly, the driver IC 310 may be damaged.

Accordingly, the liquid crystal display according to the embodiment may effectively protect the driver IC 310 by the first extension part 130, the groove 221, and the second extension part 240.

Although the above description has been made based on the embodiments, these are merely examples and are not intended to limit the present invention. Those skilled in the art to which the present invention pertains may not have been exemplified above without departing from the essential characteristics of the present embodiments. It will be appreciated that many variations and applications are possible. For example, each component specifically shown in the embodiment can be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.

1 is an exploded perspective view illustrating a liquid crystal display according to an embodiment.

2 is a plan view illustrating a mold frame, a light guide plate, and a light emitting diode.

FIG. 3 is a cross-sectional view taken along the line A-A 'of FIG. 2.

Claims (7)

frame; A light guide plate disposed inside the frame and having a groove formed therein; And And a first extension part extending from the inner surface of the frame and disposed inside the groove. The liquid crystal display panel of claim 1, further comprising: a liquid crystal panel disposed on the light guide plate; And It includes a drive element mounted on the liquid crystal panel, And the first extension part and the groove correspond to the driving element. The liquid crystal display device of claim 1, further comprising a light source disposed on a side surface of the first extension part to generate light. The liquid crystal display device of claim 3, wherein the light sources are disposed on each side of the first extension part. The liquid crystal display device of claim 1, further comprising a second extension part extending from a side surface of the light guide plate and overlapping the first extension part. The liquid crystal display of claim 5, wherein the frame and the first extension part are integrally formed, and the light guide plate and the second extension part are integrally formed. The liquid crystal display of claim 5, wherein a thickness of the first extension part and the second extension part is smaller than a thickness of the light guide plate.

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