KR20100066239A - Liquid crystal display device - Google Patents

Abstract

PURPOSE: A liquid crystal display device is provided to increase reliability of a conductive tape, thereby preventing display quality deterioration due to static electricity. CONSTITUTION: A panel guide(100) supports the edge of a liquid crystal display panel(110). A bottom cover is combined with the panel guide. A conductive tape(200) is attached to one side of the liquid crystal display panel. The conductive tape is attached to the side of the panel guide and the lower surface of the bottom cover. A plurality of first and second slits(201,203) are formed in an area corresponding to the gap between one side of the liquid crystal display panel and the side of the panel guide. The longitudinal direction of the first slit is normal to the longitudinal direction of the second slit.

Description

[0001] LIQUID CRYSTAL DISPLAY DEVICE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device capable of improving defects caused by static electricity.

Cathode ray tube (CRT), one of the widely used display devices, is mainly used for monitors such as TVs, measuring devices, and information terminal devices, but the size and weight of electronic products are reduced due to the weight and size of CRT itself. Could not actively respond to the response.

As a solution to this problem, the liquid crystal display device has a tendency that its application range is gradually widening due to the features such as light weight, thinning, low power consumption driving. Accordingly, in order to meet the needs of users, liquid crystal display devices are progressing in the direction of large area, thinning, and low power consumption.

BACKGROUND ART A liquid crystal display device is a display device that displays an image by controlling an amount of light passing through a liquid crystal, and is widely used for advantages such as thinning and low power consumption.

Unlike the CRT, the liquid crystal display is not a display device that emits light by itself, and thus, a backlight unit including a separate light source is provided on the back of the liquid crystal display panel to provide light for visually representing an image.

The liquid crystal display panel is supported by the panel guide, and the panel guide is coupled to the bottom cover of the backlight unit.

In such a liquid crystal display device, static electricity may be generated by flow or friction. Static electricity refers to the accumulation of a specific charge by friction or peeling, and discharges energy and changes to a low energy state by discharge.

When the static electricity is discharged, the voltage is so high that the impact on the electronic product occurs. Since fine patterns and thin film transistors are formed in the liquid crystal display panel, when the electrostatic discharge occurs, a problem may occur in that the wiring is shorted or the thin film transistor is damaged and abnormally driven. There was a problem of lowering the display quality of the liquid crystal display panel.

An object of the present invention is to provide a liquid crystal display device that can improve the defect caused by static electricity.

Liquid crystal display device according to an embodiment of the present invention,

A liquid crystal display panel; A panel guide supporting an edge of the liquid crystal display panel;

A bottom cover coupled with the panel guide; And a conductive tape attached to one side of the liquid crystal display panel and attached to a side surface of the panel guide and a bottom surface of the bottom cover, wherein the conductive tape is disposed between one side of the liquid crystal display panel and the side surface of the panel guide. A plurality of first and second slits are formed in a region corresponding to the second slits, and the length direction of the first slits is perpendicular to the length direction of the second slits.

In the conductive tape of the present invention, the first and second slits are formed to disperse the stress caused by flow in the x-x ', y-y', and zz 'directions of the liquid crystal display panel, thereby reducing the peeling of the conductive tape. There is.

According to the present invention, since the first and second slits are formed to disperse the stress of the conductive tape for preventing damage to the liquid crystal display panel by static electricity, the reliability of the conductive tape is improved, and the display quality is prevented from being lowered by the corrector. It can work.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view illustrating a liquid crystal display device according to an exemplary embodiment of the present invention, and FIG. 2 is a diagram illustrating a conductive tape peripheral area of region A of FIG. 1.

As shown in FIG. 1 and FIG. 2, the liquid crystal display according to the exemplary embodiment of the present invention is provided with a liquid crystal display panel 110 on which an image is displayed and is disposed under the liquid crystal display panel 110 to provide light. And a panel guide 100 supporting the edge of the lower surface of the liquid crystal display panel 110 and being coupled to the backlight unit 120.

Although not shown in the drawings, the liquid crystal display of the present invention further includes a top case (not shown) surrounding the edge of the upper surface of the liquid crystal display panel 110 and fixed to the backlight unit 120.

Although not shown in detail, the liquid crystal display panel 110 is bonded to a thin film transistor (TFT) substrate and a color filter substrate to maintain a uniform cell gap facing each other, and a liquid crystal layer interposed between the two substrates. It includes. In the thin film transistor substrate, a plurality of gate lines are formed, a plurality of data lines intersecting the plurality of gate lines are formed, and a thin film transistor TFT is formed at an intersection area of the gate line and the data line.

A gate driving printed circuit board (113) for supplying a scan signal to a gate line is provided at an edge of the liquid crystal display panel 110, and a data driving printed circuit board (PCB) for supplying a data signal to a data line. 115 is provided.

The gate and data driving PCBs 113 and 115 are electrically connected to the liquid crystal display panel 100 by a chip on film 117. Here, the COF 117 may be changed to a tape carrier package (TCP).

The backlight unit 120 is disposed in parallel with the bottom cover 170 having an upper surface, a light source 150 provided on at least one inner side of the bottom cover 170, and the light source 150. A light guide plate 140 for converting light incident from the light source 150 into surface light, optical sheets 130 disposed on the light guide plate 140 to collect and diffuse light, and a lower portion of the light guide plate 140. The reflective sheet 160 is disposed to reflect light traveling to the lower surface of the light guide plate 140 toward the liquid crystal display panel 110 to reduce light loss.

Although not shown in the drawing, the backlight unit 120 is accommodated in the bottom cover 170 to support the main (not shown) for accommodating the light source 150, the light guide plate 140, and the optical sheets 130. It includes more.

The light guide plate 140 is made of a poly methly methacrylate (PMMA) material, and although not shown in detail, the light guide plate 140 may have a wedge shape in which the thickness becomes thinner as the light source 150 moves away from the incident surface. A prism pattern for refracting incident light in the direction of the optical sheets 130 may be formed on the rear surface of the light guide plate 140.

The optical sheets 130 include a diffusion sheet for diffusing light, a light collecting sheet for condensing light, and a protective sheet for protecting the light collecting sheet.

The light source 150 may include a light emitting diode (LED) as a point light source in addition to the lamp, and is provided to surround the light source 150 to further guide the light emitted from the light source 150 toward the light guide plate 160. It may include.

The bottom cover 170 is made of a metal material, and although not shown in the drawing, a control printed circuit board (PCB) is disposed on the bottom surface of the bottom cover 170.

One side of the liquid crystal display panel 110 is provided with a plurality of conductive tapes 200 for removing static electricity flowing into the liquid crystal display panel 110.

The conductive tape 200 has a rectangular pad shape having long sides and short sides.

One side of the conductive tape 200 is attached to the liquid crystal display panel 110, and is bent to the side surface of the panel guide 100, and is bent from the side surface of the panel guide 100 to the bottom surface of the bottom cover. 170 is attached to the bottom surface.

Here, although not shown in the drawing, an adhesive material is applied to one surface of the conductive tape 200.

The conductive tape 200 has a function of electrically connecting the liquid crystal display panel 110 and the metal bottom cover 170 to remove static electricity generated by friction during manufacturing of the liquid crystal display device.

That is, the conductive tape 200 discharges static electricity generated from the liquid crystal display panel 110 toward the bottom cover 170 to prevent electrostatic discharge from the liquid crystal display panel 110.

The liquid crystal display panel 110 flows from the panel guide 100 due to vibration, and the conductive tape 200 is concentrated due to the flow of the liquid crystal display panel 110.

The stress concentration region of the conductive tape 200 is located between the liquid crystal display panel 110 and the side surface of the panel guide 100, and the first and second slits 201 and 203 are disposed in the stress concentration region. Is formed.

The structures of the plurality of first and second slits 201 and 203 have different orientations, and the plurality of first slits 201 are formed at regular intervals, and the plurality of second slits 203 are formed. Are formed at regular intervals.

The longitudinal direction of the first slit 201 and the longitudinal direction of the second slit 203 are formed perpendicular to each other and are not connected to each other.

The conductive tape 200 has first and second slits 201 and 203 formed therein to disperse stress due to flow in the x-x ', y-y', and zz 'directions of the liquid crystal display panel 110. Peeling of the 200 can be reduced.

The structure of the conductive tape 200 will be described in more detail with reference to FIG. 3.

3 is a plan view illustrating the conductive tape of FIG. 1.

As shown in FIG. 3, the conductive tape 200 of the present invention has a first region a1 attached to the liquid crystal display panel along a first direction, and a second region attached to the side surface and the bottom cover of the panel guide. a2). Here, a plurality of first and second slits 201 and 203 are formed between the first and second regions a1 and a2, and a region in which the plurality of first and second slits 201 and 203 are formed. The liquid crystal display panel may be defined as a region where stress of the conductive tape 200 is concentrated when the liquid crystal display panel flows.

The plurality of first slits 201 are formed at regular intervals in a direction perpendicular to the first direction, that is, in a second direction, and the pitch p between the first slits 201 is maintained at approximately 6 mm. do.

The plurality of second slits 203 are formed in a direction perpendicular to the first slits 201 with respect to the plane of the conductive tape 200. The second slits 203 are formed at regular intervals in the second direction, and the pitch p between the second slits 203 is maintained at about 6 mm.

Here, the second slit 203 is formed along the second direction parallel to the first slit 201.

The intervals d between the first and second slits 201 and 203 adjacent to each other are the same.

Third and fourth slits 205 and 207 are formed in an area corresponding to an area where the first and second slits 201 and 203 are formed.

The third and fourth slits 205 and 207 have an error (in the opposite direction) when an operator attaches the conductive tape having only the first and second slits 201 and 203 formed in the process of attaching the conductive tape 200. Is formed to prevent.

As described above, the liquid crystal display device of the present invention allows the first and second slits 201 and 203 to disperse the stress of the conductive tape 200 for preventing the liquid crystal display panel 110 from being damaged by static electricity. ), The reliability of the conductive tape 200 can be improved.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

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

FIG. 2 is a diagram illustrating a conductive tape peripheral region of region A of FIG. 1.

3 is a plan view illustrating the conductive tape of FIG. 1.

Claims (6)

A liquid crystal display panel; A panel guide supporting an edge of the liquid crystal display panel; A bottom cover coupled with the panel guide; And And a conductive tape attached to one side of the liquid crystal display panel and attached to a side surface of the panel guide and a bottom surface of the bottom cover. The conductive tape has a plurality of first and second slits formed in an area corresponding to one side of the liquid crystal display panel and a side surface of the panel guide, and a length direction of the first slit is defined by the second slit. A liquid crystal display device, characterized in that it is perpendicular to the longitudinal direction. According to claim 1, And the plurality of first slits are formed in one direction, and the second slits are formed to be parallel to the first slit at regular intervals. According to claim 1, Liquid crystal display device characterized in that the adhesive material is coated on one surface of the conductive tape. According to claim 1, And a pitch of approximately 6 mm between the first slits. According to claim 1, A liquid crystal display device having a pitch of approximately 6 mm between upper and second second slits. According to claim 1, And the third and fourth slits are formed in the conductive tape in an area corresponding to an area in which the first and second slits are formed.

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