KR20100011849A

KR20100011849A - Display device

Info

Publication number: KR20100011849A
Application number: KR1020080073242A
Authority: KR
Inventors: 이금태
Original assignee: 엘지이노텍 주식회사
Priority date: 2008-07-25
Filing date: 2008-07-25
Publication date: 2010-02-03

Abstract

A display device is disclosed. The display device includes a mold frame; A display panel disposed inside the mold frame; A touch panel disposed on the mold frame; And a sealing member interposed between the mold frame and the touch panel. The sealing member prevents foreign matter from penetrating between the display panel and the touch panel. Accordingly, the display device prevents deterioration of image quality and malfunction of the touch panel due to penetration of foreign matter between the touch panel and the display panel.

Description

Display {DISPLAY DEVICE}

An embodiment relates to a display device.

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

In addition, such display devices include a touch panel for directly inputting a signal to a screen. In this case, foreign matter penetrates between the touch panel and the display panel, thereby causing deterioration of image quality and sensitivity.

Embodiments provide a display device having improved image quality and improved touch sensitivity by preventing foreign matter from penetrating between the touch panel and the display panel.

In an exemplary embodiment, a display device includes a mold frame; A display panel disposed inside the mold frame; A touch panel disposed on the mold frame; And a sealing member interposed between the mold frame and the touch panel.

The display device according to the embodiment includes a sealing member interposed between the mold frame and the touch panel. In addition, the display device according to the exemplary embodiment may further include a top chassis and an adhesive member interposed between the mold frame and the touch panel.

Therefore, the space between the touch panel and the display panel is sealed by the sealing member or by the sealing member, the top chassis and the adhesive member, and chipping of foreign matter is prevented in the space between the touch panel and the display panel.

Accordingly, the display device according to the embodiment may prevent foreign matter from penetrating between the touch panel and the display panel, and may have improved image quality and improved touch sensitivity.

In addition, the sealing member may have a closed loop shape or may be disposed on a connection substrate connected to the display panel, and the display device according to the embodiment may effectively prevent foreign matter from penetrating.

In the description of the embodiments, each panel, member, frame, sheet, layer, or substrate is formed on or under the "pan" of each panel, member, frame, sheet, layer, or substrate, and the like. When described as being "in" and "under" includes both those that are 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 perspective view illustrating a liquid crystal display according to an embodiment. 3 is a cross-sectional view taken along the line A-A 'of FIG. 2. FIG. 4 is a cross-sectional view taken along line BB ′ in FIG. 2.

1 to 4, the liquid crystal display device includes a mold frame 100, a backlight assembly 200, a liquid crystal panel 300, a light emitting unit substrate 231, a connection substrate 310, a sealing member 400, And a top chassis 500 and a touch panel 600.

The mold frame 100 has a rectangular frame shape and accommodates the backlight assembly 200 and the liquid crystal panel 300. 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 and a second frame 120. The first frame 110 surrounds the side of the backlight assembly 200. The first frame 110 has a rectangular frame shape.

The second frame 120 is disposed on the first frame 110 and integrally formed with the second frame 120. In addition, the second frame 120 forms a step with the first frame 110. The second frame 120 surrounds the side of the liquid crystal panel 300.

The second frame 120 includes cross sections 121 and 122 facing each other. That is, the second frame 120 has a rectangular frame shape with a portion cut. In addition, an open area 123 is formed between the end surfaces 121 and 122.

The backlight assembly 200 is disposed inside the mold frame 100. 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 light emitting diode 230, and an optical sheet 240.

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 and receives light emitted from the light emitting diode 230 and emits upward through scattering, refraction, and reflection.

The light emitting diodes 230 are disposed on side surfaces of the light guide plate 220 and emit light toward the light guide plate 220. The light emitting diodes 230 are mounted on the light emitting unit substrate 231.

The optical sheet 240 is disposed on the light guide plate 220 and improves characteristics of light passing through the optical sheet 240.

The liquid crystal panel 300 is disposed on the backlight assembly 200 and is disposed inside the mold frame 100. In more detail, the second frame 120 is disposed inside. The liquid crystal panel 300 displays an image by adjusting the intensity of light passing through in units of pixels.

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

The light emitting unit substrate 231 mounts the light emitting diodes 230 and is electrically connected to the light emitting diodes 230. The light emitting unit substrate 231 transmits a signal for driving the light emitting diode 230 to the light emitting diode 230.

The light emitting unit substrate 231 is disposed on the first frame 110 and on a side surface of the first frame 110. The light emitting unit substrate 231 is disposed in the open area 123. The light emitting unit substrate 231 is a flexible printed circuit board (FPCB) and is connected to the connection substrate 310.

The connection substrate 310 is connected to the liquid crystal panel 300. The connection substrate 310 is a flexible printed circuit board and is disposed on the light emitting substrate 231. In addition, the connection substrate 310 is disposed on and side surfaces of the first frame 110 and is disposed in the open area 123.

The connection substrate 310 may be connected to a main substrate driving the liquid crystal panel 300. Alternatively, driving elements for driving the liquid crystal panel 300 may be mounted on the connection substrate 310. .

The sealing member 400 is disposed on the mold frame 100. In more detail, the sealing member 400 is disposed on the first frame 110 and the second frame 120. The sealing member 400 is disposed in the open area 123. The sealing member 400 is disposed on the connection substrate 310.

In addition, the sealing member 400 has a closed loop shape surrounding the circumference of the liquid crystal panel 300.

The sealing member 400 is in close contact with the mold frame 100. In addition, the sealing member 400 is in close contact with the connection substrate 310. The sealing member 400 has elasticity, and examples of the material used as the sealing member 400 may include polyurethane resin or rubber.

The top chassis 500 covers the mold frame 100 and the sealing member 400. The top chassis 500 reinforces the strength of the mold frame 100, and examples of the material used as the top chassis 500 may include metal.

The top chassis 500 exposes a screen on which an image of the liquid crystal panel 300 is displayed. The sealing member 400 is in close contact with the top chassis 500.

The touch panel 600 is disposed on the top chassis 500. The touch panel 600 is disposed on the mold frame 100. Therefore, the sealing member 400 is interposed between the touch panel 600 and the mold frame 100.

The touch panel 600 receives an external touch signal. The touch panel 600 may identify a location by measuring contact resistance of the resistive layers due to external pressure.

The touch panel 600 has a plate shape and is attached to an upper surface of the top chassis 500 by an adhesive member 610. The adhesive member 610 has a closed loop shape corresponding to the top surface of the top chassis 500.

The mold frame 100 and the sealing member 400 are in close contact with each other, and the top chassis 500 and the sealing member 400 are in close contact with each other. In addition, the touch panel 600 is in close contact with the top chassis by the adhesive member 610.

In addition, the liquid crystal panel 300 is attached to the mold frame 100 and the optical sheet 240 by double-sided tape.

Accordingly, a space GAP between the liquid crystal panel 300 and the touch panel 600 is formed in the mold frame 100, the sealing member 400, the top chassis 500, and the adhesive member 610. Can be sealed by.

In particular, the sealing member 400 is disposed in the open area to prevent foreign matter from penetrating into the space GAP between the liquid crystal panel 300 and the touch panel 600.

That is, the sealing member 400 is interposed between the top chassis 500 and the connection substrate 310, and foreign matter penetrates into the space GAP between the liquid crystal panel 300 and the touch panel 600. Is prevented.

In addition, in order to more effectively prevent foreign matter from penetrating into the space GAP between the liquid crystal panel 300 and the touch panel 600, the sealing member 400 is formed on the side surface of the mold frame 100. Can be arranged.

That is, the sealing member 400 may be interposed between the side of the mold frame 100 and the top chassis 500.

Therefore, the liquid crystal display according to the embodiment can prevent the deterioration of the image quality caused by the infiltration of foreign matter and the deterioration of the sensing sensitivity of the touch panel 600.

The liquid crystal display according to the embodiment has improved image quality and improved sensing sensitivity.

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

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

FIG. 4 is a cross-sectional view taken along line BB ′ in FIG. 2.

Claims

Mold frame;

A display panel disposed inside the mold frame;

A touch panel disposed on the mold frame; And

And a sealing member interposed between the mold frame and the touch panel.

The display device of claim 1, further comprising a top chassis covering the sealing member and the mold frame.

The display device of claim 2, further comprising an adhesive member interposed between the touch panel and the top chassis and having a closed loop shape.

The display device of claim 1, further comprising a connection substrate connected to the display panel.

And the sealing member is disposed on the connection substrate.

The display device of claim 4, further comprising a backlight assembly disposed under the display panel.

The mold frame may include a first frame surrounding a side of the backlight assembly; And

A second frame disposed on a side of the display panel, the second frame forming a step with the first frame;

The sealing member is disposed on the first frame and the second frame.

The display device of claim 4, wherein the second frame includes end surfaces facing each other, and the sealing member is disposed between the end surfaces.

The display device of claim 1, wherein the sealing member has elasticity.

The display device of claim 1, wherein the sealing member comprises polyurethane resin or rubber.

The display device of claim 1, wherein the sealing member is disposed on an upper surface and a side surface of the mold frame.