KR102459047B1 - Liquid crystal display device attached touch panel - Google Patents

Abstract

The present invention relates to a touch panel-attached liquid crystal display device, and more particularly, to a touch panel-attached liquid crystal display device from which static electricity of a touch panel is removed.
A feature of the present invention is to further include a housing made of a metal material, so that static electricity generated from the touch panel is grounded with the cover bottom and discharged to the outside to be removed.
Accordingly, due to static electricity generated from the touch panel, it can be prevented from affecting the alignment direction of the liquid crystal molecules of the liquid crystal panel, thereby inhibiting normal operating characteristics.

Description

Liquid crystal display device attached touch panel

The present invention relates to a touch panel-attached liquid crystal display device, and more particularly, to a touch panel-attached liquid crystal display device from which static electricity of a touch panel is removed.

A liquid crystal display device (LCD), which is advantageous for displaying moving images and has a large contrast ratio, is actively used in TVs and monitors, etc. shows the principle of image realization by

Such a liquid crystal display device consists of a liquid crystal panel, which is bonded by interposing a liquid crystal layer between two parallel substrates, as an essential component, and realizes a difference in transmittance by changing the arrangement direction of liquid crystal molecules with an electric field in the liquid crystal panel. do.

On the other hand, recently, without using a separate input device, when an icon or keyboard displayed on the display screen is selected using a human hand or a separate touch means, the corresponding icon or keyboard is selected and a touch panel capable of inputting information. The demand for a touch panel-attached liquid crystal display device attached to the liquid crystal display device is increasing.

1 is a cross-sectional view schematically illustrating a general touch panel-attached liquid crystal display device.

As shown, a general touch panel-attached liquid crystal display device is composed of a liquid crystal panel 10 , a backlight unit 20 , and a guide panel 30 and a cover bottom 50 , and touch the liquid crystal panel 10 with the upper part of the liquid crystal panel 10 . A panel 40 is located.

The liquid crystal panel 10 is a part that plays a key role in image expression and is composed of first and second substrates 12 and 14 bonded face to face with a liquid crystal layer interposed therebetween.

A backlight unit 20 is provided behind the liquid crystal panel 10 .

The backlight unit 20 includes an LED assembly 29 comprising an LED 29a arranged along the longitudinal direction of at least one edge of the guide panel 30 and a PCB 29b on which a plurality of LEDs 29a are mounted, and a cover bottom. It includes a white or silver reflective plate 25 seated on the 50 , a light guide plate 23 seated on the reflective plate 25 , and an optical sheet 21 interposed thereon.

The liquid crystal panel 10 and the backlight unit 20 are combined by a cover bottom 50 covering the rear surface of the backlight unit 20 in a state in which the edge is surrounded by the guide panel 30 having a rectangular frame shape.

In addition, the touch panel 40 is attached to the front of the liquid crystal panel 10 through an adhesive (not shown).

In this case, unexplained reference numerals 19a and 19b denote polarizing plates attached to both surfaces of the liquid crystal panel 10 to control the polarization direction of light, respectively.

On the other hand, in such a touch panel-attached liquid crystal display device, unnecessary electric charges such as static electricity are easily generated from the touch panel 40 , and such static electricity flows into the liquid crystal panel 10 and affects the arrangement direction of liquid crystal molecules of the liquid crystal panel 10 . It affects the normal operation characteristics.

Accordingly, there is a need for an antistatic means for discharging static electricity generated from the touch panel 40 .

An object of the present invention is to solve the above problems, and an object of the present invention is to provide an antistatic means for discharging static electricity generated from a touch panel of a touch panel attached liquid crystal display device.

In order to achieve the object as described above, the present invention includes a liquid crystal panel, a backlight unit positioned under the liquid crystal panel, a horizontal plane on which the liquid crystal panel and the backlight unit are seated, and a side surface perpendicular to the horizontal plane a guide panel including a cover bottom that is seated on the cover bottom, a first vertical part surrounding edges of the liquid crystal panel and the backlight unit, and a first horizontal part on which the droplet panel is seated; an upper portion of the liquid crystal panel A touch panel-attached liquid crystal display device comprising: a touch panel attached to the touch panel; provides

As described above, according to the present invention, a housing made of a metal material is further provided in the touch panel-attached liquid crystal display device according to the present invention, so that static electricity generated from the touch panel is grounded with the cover bottom and discharged to the outside to be removed. .

Through this, due to static electricity generated from the touch panel, there is an effect that can affect the alignment direction of the liquid crystal molecules of the liquid crystal panel, thereby preventing the normal operating characteristics from being impaired.

1 is a cross-sectional view schematically illustrating a general touch panel-attached liquid crystal display device.
2 is a perspective view schematically illustrating a touch panel-attached liquid crystal display device according to a first embodiment of the present invention.
3 is a perspective view schematically illustrating a housing according to a first embodiment of the present invention;
Figures 4a - 4b are schematic cross-sectional views of a modularized part of Figure 2;
5A to 5B are cross-sectional views schematically illustrating a part of a modular touch panel-attached liquid crystal display device according to a second embodiment of the present invention.
6 is a cross-sectional view schematically illustrating a part of a modular touch panel-attached liquid crystal display device according to a third embodiment of the present invention.
7 is a cross-sectional view schematically illustrating a part of a modular touch panel-attached liquid crystal display device according to a fourth embodiment of the present invention.

The present invention provides a liquid crystal panel, a backlight unit positioned under the liquid crystal panel, a horizontal surface on which the liquid crystal panel and the backlight unit are seated, and a cover bottom including a side surface perpendicular to the horizontal surface, and on the cover bottom a guide panel mounted on the liquid crystal panel and a first vertical portion surrounding edges of the backlight unit and a first horizontal portion on which the droplet panel is seated; a touch panel attached to an upper portion of the liquid crystal panel; and the touch panel Provided is a touch panel-attached liquid crystal display including a second horizontal part made of a metal material, and a second vertical part perpendicular to the second horizontal part and made of a metal material.

At this time, the second vertical part is in close contact with the outside of the first vertical part, the second horizontal part covers the upper surface of the first vertical part, and passes through the first vertical part from the outside of the second vertical part and fits into the side surface Includes a screw to be inserted.

In addition, a protruding end is protruded from the first vertical portion, and a chamfer part is provided at a portion of an edge formed by the second vertical portion and the second horizontal portion, and the protruding end is inserted into the chamfered portion. and a third horizontal portion surrounding a lower surface of the first vertical portion is provided at one end of the second vertical portion opposite to the second horizontal portion provided, and the third horizontal portion is in contact with the side surface.

In this case, the second vertical part is located inside the first vertical part, the second horizontal part covers an upper surface of the first vertical part, and at one end of the second vertical part opposite to the second horizontal part is provided. A third horizontal portion perpendicular to the second vertical portion is provided, and the third horizontal portion is in contact with the side surface.

And, it includes a screw inserted into the side surface through the first vertical portion and the second vertical portion from the outside of the first vertical portion.

Hereinafter, an embodiment according to the present invention will be described in detail with reference to the drawings.

- 1st embodiment -

2 is a perspective view schematically illustrating a touch panel-attached liquid crystal display device according to a first embodiment of the present invention.

As shown, the liquid crystal display according to the first embodiment of the present invention largely includes a liquid crystal panel 110 , a backlight unit 120 , a touch panel 140 , a guide panel 130 , a housing 200 , and a cover. It is composed of a bottom 150 .

At this time, if the direction in the drawing is defined for convenience of explanation, the backlight unit 120 is disposed at the rear of the liquid crystal panel 110 on the premise that the display surface of the liquid crystal panel 110 faces forward, The touch panel 140 is positioned in front of the liquid crystal panel 110 with the guide panel 130 in the shape of a square frame wrapped around it, and the cover bottom 150 is positioned on the back side of the backlight unit 120, combined and united

Let's take a closer look at each of these.

First, the liquid crystal panel 110 is a part that plays a key role in the image expression of the liquid crystal display, and includes a first substrate 112 and a second substrate 114 bonded to each other and a liquid crystal layer interposed therebetween. (not shown) is included.

Although not shown in the drawing, on the inner surface of the first substrate 112 called a lower substrate or an array substrate, a plurality of gate lines and data lines intersect to define a pixel, and at each intersection of each pixel, a thin film transistor (thin) A film transistor (TFT) is provided and is connected to a transparent pixel electrode formed in each pixel in a one-to-one correspondence.

At this time, a plurality of pixel electrodes are separated in a bar shape and spaced apart from each other, and a common wiring is formed on the same layer in parallel with the gate wiring, and is electrically connected to the common wiring and alternates with a plurality of pixel electrodes separated in each pixel. spaced apart from each other to form a plurality of common electrodes.

Here, when a plurality of pixel electrodes and a common electrode are configured to be spaced apart in each pixel, the liquid crystal panel 110 operating in the IPS mode is formed, and only the plate-shaped pixel electrode except for the common electrode is the first substrate 112 . ), it forms the liquid crystal panel 110 operating in any one of TN mode, ECB mode, and VA mode.

And on the inner surface of the second substrate 114 called an upper substrate or a color filter substrate, red (R), green (G), and blue (B) color filters as an example corresponding to each pixel and these A black matrix is provided that surrounds each and covers the gate line, the data line, and the thin film transistor.

In addition, upper and lower alignment layers (not shown) that determine the initial molecular alignment direction of the liquid crystal are interposed between the first and second substrates 112 and 114 and the liquid crystal layer (not shown), and the first and second substrates A seal pattern (not shown) is formed along the edges of both substrates 112 and 114 to prevent leakage of the liquid crystal layer (not shown) filled between the 112 and 114 .

In addition, first and second polarizing plates 119a and 119b (refer to FIG. 4 ) for selectively transmitting only specific light are attached to the outer surfaces of the first and second substrates 112 and 114 , respectively.

Along one edge of the liquid crystal panel 110, the printed circuit board 117 is connected via a connecting member 116 such as a flexible circuit board or a tape carrier package (TCP), so that in the modularization process, the guide panel It is in close contact with the side of the 130 or the back of the cover bottom 150 .

In the liquid crystal panel 110, when the thin film transistor selected for each gate line is turned on by the on/off signal of the thin film transistor scanned and transmitted to the gate line, the image signal of the data line is transmitted to the corresponding pixel electrode. The arrangement direction of the liquid crystal molecules is changed by the electric field between the pixel electrode and the common electrode generated thereby, indicating a difference in transmittance.

In addition, the touch panel 140 is located above the liquid crystal panel 110, and the liquid crystal display device according to the first embodiment of the present invention provides a more convenient and convenient way of writing and drawing recently requested texts and pictures by the touch panel 140. You will have the advantage of being able to accurately input.

The touch panel 140 is attached to the display surface of the liquid crystal panel 110 through an adhesive member (141, see FIG. 4), and the adhesive member (141, see FIG. 4) is an optically clear resin (OCR) or optical adhesive member. An optically clear adhesive (OCA) or the like may be used, but is not limited thereto.

In addition, the liquid crystal display device according to the present invention is provided with a backlight unit 120 that supplies light from the rear surface of the liquid crystal panel 110 so that the difference in transmittance is expressed to the outside.

The backlight unit 120 includes an LED assembly 129 arranged along at least one edge in the longitudinal direction of the cover bottom 150 , a reflecting plate 125 , a light guide plate 123 mounted on the reflecting plate 125 , and and an optical sheet 121 positioned above the light guide plate.

The LED assembly 129 is a light source of the backlight unit 120 and is located on one side of the light guide plate 123 to face the light incident surface of the light guide plate 123, and the LED assembly 129 includes a plurality of LEDs 129a, A plurality of LEDs (129a) includes a PCB (129b) mounted spaced apart from each other.

At this time, the plurality of LEDs 129a emit light having red (R), green (G), and blue (B) colors in a forward direction toward the light incident surface of the light guide plate 123 , and the plurality of RGB LEDs 129a ) can be turned on at once to realize white light by color mixing.

In particular, recently, in order to improve luminous efficiency and luminance, a blue LED 129a including a blue LED chip having excellent luminous efficiency and luminance is used, and as a phosphor, 'cerium-doped yttrium aluminum garnet (YAG:Ce)', That is, the blue LED 129a made of a yellow phosphor is used.

The blue light emitted from the LED 129a passes through the phosphor and mixes with the yellow light emitted by the phosphor, thereby realizing white light.

The light guide plate 123 to which the light emitted from the plurality of LEDs 129a is incident is uniformly spread over a wide area of the light guide plate 123 while the light incident from the LEDs 129a travels within the light guide plate 123 by total reflection several times. Spread to provide a surface light source to the liquid crystal panel (110).

The light guide plate 123 may include a pattern having a specific shape on its lower surface in order to supply a uniform surface light source. Here, the pattern may be variously configured such as an elliptical pattern, a polygonal pattern, a hologram pattern, etc. in order to guide the light incident into the light guide plate 123 . The pattern is formed on the lower surface of the light guide plate 123 by a printing method or an injection method.

The reflection plate 125 is located on the rear surface of the light guide plate 123 , and reflects the light passing through the rear surface of the light guide plate 123 toward the liquid crystal panel 110 to improve the luminance of the light.

The optical sheet 121 on the light guide plate 123 includes a diffusion sheet and at least one light collecting sheet, and the light passing through the light guide plate 123 is diffused or condensed to provide a more uniform surface light source to the liquid crystal panel 110 . to get hired

The liquid crystal panel 110 and the backlight unit 120 are modularized through the guide panel 130 and the cover bottom 150 , and the cover bottom 150 includes the liquid crystal panel 110 and the backlight unit 120 on which the backlight unit 120 is seated. The horizontal plane 151 is provided to support the entire liquid crystal display device and at the same time serve as a lower frame that minimizes the occurrence of light loss, and the edge of the horizontal plane 151 is vertically bent so that the side surface ( 153) is achieved.

Then, the guide panel 130 is seated on the cover bottom 150 .

The guide panel 130 has a rectangular frame shape for supporting the rear edge of the liquid crystal panel 110, and the liquid crystal panel 110 and the backlight unit ( A first horizontal part 133 for dividing the positions of 120 is provided.

The liquid crystal panel 110 has a rear edge supported by an adhesive pad 115 (refer to FIG. 4 ) such as a double-sided tape, and is attached and fixed on the first horizontal part 133 .

Here, the guide panel 130 and the cover bottom 150 are assembled and fastened to each other, so that the liquid crystal panel 110 and the backlight unit 120 are integrally modularized.

At this time, the guide panel 130 is also referred to as a main support or main support, or a mold frame, and the cover bottom 150 is also referred to as a bottom cover or a lower cover.

On the other hand, the touch panel 140 positioned above the liquid crystal panel 110 has a larger area than the liquid crystal panel 110 so as to cover the entire liquid crystal panel 110 and protrude to the outside of the liquid crystal panel 110 when viewed in a plan view. and has an extended form.

At this time, in the touch panel-attached liquid crystal display device according to the first embodiment of the present invention, the housing 200 protruding outward of the liquid crystal panel 110 and contacting the extended touch panel 140 is attached to the guide panel 130 . It is characterized in that it is further provided to the outside.

The housing 200 is made of a metal material, and the static electricity generated from the touch panel 140 is grounded with the cover bottom 150 and completely discharged to the outside to be removed.

Through this, due to static electricity generated from the touch panel 140 , it can be prevented from affecting the alignment direction of the liquid crystal molecules of the liquid crystal panel 110 , thereby inhibiting normal operating characteristics.

3 is a perspective view schematically illustrating a housing according to a first embodiment of the present invention.

As shown, the housing 200 according to the first embodiment of the present invention has a rectangular frame shape in which a cross section is bent in an “a” shape so as to cover the upper surface and the side surface of the guide panel (130 in FIG. 2 ).

Looking at this in more detail, the housing 200 is formed of first to fourth edge portions so as to display an image implemented on the liquid crystal panel (110 in FIG. 2) by opening the front surface, in this case, the first to fourth edge portions are guides. The second vertical part 201 covering the outer side of the first vertical part (131 in FIG. 2) of the panel (130 in FIG. 2) and the second vertical part 201 perpendicular to the guide panel (130 in FIG. 2) 1 It consists of a second horizontal part 203 covering the upper surface of the vertical part (131 in FIG. 2).

At this time, at least two chamfer parts 205 are provided on the first to fourth edge portions along the longitudinal direction, and each chamfer part 205 includes a second horizontal part 203 and a second vertical part ( 201) has a shape in which a part of the edge formed is separated.

The housing 200 is made of a metal material, and the second horizontal part 203 is in contact with the touch panel (140 in FIG. 2) to discharge static electricity generated from the touch panel (140 in FIG. 2) to the outside to remove it. will do

4A to 4B are cross-sectional views schematically showing a part of modularized FIG. 2, FIG. 4A is a cross-sectional view schematically showing a part of modularized FIG. 2 taken along line A-A of FIG. 3, and FIG. 4B is a cross-sectional view of FIG. 3 It is a schematic cross-sectional view of a portion of the modularized figure 2 taken along line B-B.

As shown, an optical sheet ( 121) are stacked to form a backlight unit ( 120 in FIG. 2 ).

In addition, the first and second substrates 112 and 114 and a liquid crystal panel 110 having a liquid crystal layer (not shown) interposed therebetween are positioned on the backlight unit ( 120 in FIG. 2 ), and the first and second Polarizing plates 119a and 119b for selectively transmitting only specific light are attached to the outer surfaces of the substrates 112 and 114, respectively.

In addition, the touch panel 140 is attached and positioned on the upper portion of the liquid crystal panel 110 through the adhesive member 141 .

Here, the backlight unit (120 in FIG. 2) is seated on the horizontal surface 151 of the cover bottom 150, and the edge of the backlight unit (120 in FIG. 2) is surrounded by the side surface 153 of the cover bottom 150, The liquid crystal panel 110 is positioned above the backlight unit ( 120 in FIG. 2 ) in a state in which an edge is surrounded by the first vertical part 131 of the guide panel 130 .

The liquid crystal panel 110 is attached and supported on the first horizontal portion 133 of the guide panel 130 through an adhesive pad 115 .

In addition, the touch panel 140 positioned above the liquid crystal panel 110 has a larger area than the liquid crystal panel 110 so as to cover the entire liquid crystal panel 110 and protrude to the outside of the liquid crystal panel 110 when viewed in a plan view. and has an extended form.

At this time, as shown in FIG. 4A , in the region where the chamfer part 205 of the housing 200 is not formed, the inner surface of the first vertical part 131 of the guide panel 130 is the cover bottom 150 . It is positioned in close contact with the outer surface of the side surface 153 , and the second vertical portion 201 of the housing 200 is positioned in close contact with the outer surface of the first vertical portion 131 of the guide panel 130 , and the guide The upper surface of the first vertical portion 131 of the panel 130 is positioned in close contact with the inner surface of the first horizontal portion 203 of the housing 200 , and is located outside the second horizontal portion 203 of the housing 200 . The side surface protrudes to the outside of the liquid crystal panel 110 and comes into close contact with the extended touch panel 140 .

And, the housing 200 penetrates from the outside of the second vertical part 201 of the housing 200 through the first vertical part 131 of the guide panel 130 to the side surface 153 of the cover bottom 150 . Through the inserted screw 210 , it is in electrical contact with the cover bottom 150 .

And, as shown in FIG. 4B, in the region where the chamfer portion 205 of the housing 200 is formed, the inner surface of the first vertical portion 131 of the guide panel 130 is the side surface ( The outer surface of the first vertical portion 131 of the guide panel 130 is positioned in close contact with the outer surface of the 153 , and the second vertical portion 201 of the housing 200 is positioned in close contact with the outer surface of the guide panel 130 .

In addition, the first vertical portion 131 of the guide panel 130 is provided with a protruding end 135 corresponding to the chamfered portion 205 of the housing 200 , the protruding end 135 is the chamfer of the housing 200 . It penetrates through the fur part 205 and is exposed to the outside, and the outer surface of the second horizontal part 203 of the housing 200 is brought into close contact with the touch panel 140 which protrudes outward of the liquid crystal panel 110 and extends. do.

And, the housing 200 penetrates from the outside of the second vertical part 201 of the housing 200 through the first vertical part 131 of the guide panel 130 to the side surface 153 of the cover bottom 150 . Through the inserted screw 210 , it is assembled and fastened to the guide panel 130 and the cover bottom 150 , and in particular, comes into electrical contact with the cover bottom 150 .

In the touch panel-attached liquid crystal display device according to the first embodiment of the present invention, the touch panel 140 is in close contact with the second horizontal part 203 of the housing 200 made of a metal material, and the housing 200 ) is in electrical contact with the cover bottom 150 through the screw 210 , so the static electricity generated from the touch panel 140 is grounded to the cover bottom 150 through the housing 200 and completely discharged to the outside to be removed. will become

Through this, static electricity generated from the touch panel 140 causes interference with various signals driving the liquid crystal panel 100 to generate noise, and static electricity is generated from the pixel electrode or the inside of the liquid crystal panel 100 . It is possible to prevent the generation of ripples such as stripes on the display screen by influencing the electric field of the common electrode.

On the other hand, in the touch panel-attached liquid crystal display device according to the first embodiment of the present invention, a chamfer portion 205 is formed in the housing 200 , and the protruding end 135 of the guide panel 130 is formed by the chamfer portion 205 . By fitting through this, the position of the housing 200 is guided in the process of assembling and fastening the housing 200 to the guide panel 130 and the cover bottom 150 through the screw 210 .

Therefore, it is possible to more easily assemble and fasten the housing 200 to the guide panel 130 and the cover bottom 150 .

And, the second horizontal portion 203 of the housing 200 is formed to have a width that covers only the upper surface of the first vertical portion 131 of the guide panel 130 so as not to cover the upper surface edge of the liquid crystal panel 110 . Preferably, the second horizontal portion 203 of the housing 200 prevents a portion of the image implemented in the liquid crystal panel 110 from being covered.

In addition, it is preferable not to decrease the adhesion area of the touch panel 140 attached to the display surface of the liquid crystal panel 110 through the adhesive member 141 , so that the adhesion and fixing force of the touch panel 140 is not reduced.

The above-described touch panel integrated liquid crystal display according to the first embodiment of the present invention discharges static electricity generated from the touch panel 140 with the cover bottom 150 to the outside through the housing 200 made of a metal material. to have it removed.

Through this, due to static electricity generated from the touch panel 140 , it can be prevented from affecting the alignment direction of the liquid crystal molecules of the liquid crystal panel 110 , thereby inhibiting normal operating characteristics.

- Second embodiment -

5A to 5B are cross-sectional views schematically illustrating a part of a modular touch panel-attached liquid crystal display device according to a second embodiment of the present invention.

As shown, the touch panel-attached liquid crystal display device according to the second embodiment of the present invention includes a reflecting plate 125, a light guide plate 123, and a PCB 129b on which LEDs 129a and LEDs 129a are mounted. The optical sheets 121 are stacked on the LED assembly 129 and the light guide plate 123 made of

In addition, the first and second substrates 112 and 114 and a liquid crystal panel 110 having a liquid crystal layer (not shown) interposed therebetween are positioned on the backlight unit ( 120 in FIG. 2 ), and the first and second Polarizing plates 119a and 119b for selectively transmitting only specific light are attached to the outer surfaces of the substrates 112 and 114, respectively.

In addition, the touch panel 140 is attached and positioned on the upper portion of the liquid crystal panel 110 through the adhesive member 141 .

Here, the backlight unit (120 in FIG. 2) is seated on the horizontal surface 151 of the cover bottom 150, and the edge of the backlight unit (120 in FIG. 2) is surrounded by the side surface 153 of the cover bottom 150, The liquid crystal panel 110 is positioned above the backlight unit ( 120 in FIG. 2 ) in a state in which an edge is surrounded by the first vertical part 131 of the guide panel 130 .

The liquid crystal panel 110 is attached and supported on the first horizontal portion 133 of the guide panel 130 through an adhesive pad 115 .

In addition, the touch panel 140 positioned above the liquid crystal panel 110 has a larger area than the liquid crystal panel 110 so as to cover the entire liquid crystal panel 110 and protrude to the outside of the liquid crystal panel 110 when viewed in a plan view. and has an extended form.

At this time, as shown in FIG. 5A, the guide panel 130 is characterized in that the second vertical part 301 made of a metal material is further provided outside the first vertical part 131 made of the mold material.

The second vertical portion 301 includes a second horizontal portion 303 whose one end is vertically bent from the second vertical portion 301 so as to surround the upper surface of the first vertical portion 131 made of a mold material.

At this time, the second horizontal portion 303 of the guide panel 130 comes into close contact with the touch panel 140 that protrudes outwardly of the liquid crystal panel 110 and extends.

Accordingly, the static electricity generated from the touch panel 140 is grounded with the second horizontal portion 303 and the second vertical portion 301 made of a metal material of the guide panel 130 , and is completely discharged to the outside to be removed.

In addition, in the guide panel 130 according to the second embodiment of the present invention, as shown in FIG. 5B , both ends of the second vertical part 301 made of a metal material are the upper surface of the first vertical part 131 and The second horizontal portion 303 and the third horizontal portion 305 may be further included by being vertically bent to surround the lower surface.

At this time, the second horizontal portion 303 of the guide panel 130 comes into close contact with the extended touch panel 140 protruding outward of the liquid crystal panel 110 , and the third horizontal portion 305 has a cover bottom. It comes into close contact with the side 153 of 150 .

Accordingly, static electricity generated from the touch panel 140 is grounded with the second and third horizontal portions 303 and 305 and the second vertical portion 301 made of a metallic material of the guide panel 130 and discharged to the outside to be removed. In particular, static electricity generated from the touch panel 140 by being grounded with the cover bottom 150 is completely discharged to the outside and removed.

Through this, due to static electricity generated from the touch panel 140 , it can be prevented from affecting the alignment direction of the liquid crystal molecules of the liquid crystal panel 110 , thereby inhibiting normal operating characteristics.

- 3rd embodiment -

6 is a cross-sectional view schematically illustrating a part of a modular touch panel-attached liquid crystal display device according to a third embodiment of the present invention.

As shown, the touch panel-attached liquid crystal display device according to the third embodiment of the present invention includes a reflecting plate 125, a light guide plate 123, and a PCB 129b on which the LEDs 129a and LEDs 129a are mounted. The optical sheets 121 are stacked on the LED assembly 129 and the light guide plate 123 made of

In addition, the first and second substrates 112 and 114 and a liquid crystal panel 110 having a liquid crystal layer (not shown) interposed therebetween are positioned on the backlight unit ( 120 in FIG. 2 ), and the first and second Polarizing plates 119a and 119b for selectively transmitting only specific light are attached to the outer surfaces of the substrates 112 and 114, respectively.

In addition, the touch panel 140 is attached and positioned on the upper portion of the liquid crystal panel 110 through the adhesive member 141 .

Here, the backlight unit (120 in FIG. 2) is seated on the horizontal surface 151 of the cover bottom 150, and the edge of the backlight unit (120 in FIG. 2) is surrounded by the side surface 153 of the cover bottom 150, The liquid crystal panel 110 is positioned above the backlight unit ( 120 in FIG. 2 ) in a state in which an edge is surrounded by the first vertical part 131 of the guide panel 130 .

The liquid crystal panel 110 is attached and supported on the first horizontal portion 133 of the guide panel 130 through an adhesive pad 115 .

In addition, the touch panel 140 positioned above the liquid crystal panel 110 has a larger area than the liquid crystal panel 110 so as to cover the entire liquid crystal panel 110 and protrude to the outside of the liquid crystal panel 110 when viewed in a plan view. and has an extended form.

At this time, the touch panel-attached liquid crystal display device according to the third embodiment of the present invention includes a second vertical portion 401 made of a metallic material inside the first vertical portion 131 of the guide panel 130, One end of the second vertical portion 401 includes a second horizontal portion 403 to completely cover the upper surface of the first vertical portion 131 .

Accordingly, the second vertical portion 401 and the second horizontal portion 403 have a “T” shape in cross section.

At this time, the second horizontal portion 403 of the guide panel 130 comes into close contact with the touch panel 140 that protrudes outward of the liquid crystal panel 110 and extends.

In addition, the other end of the second vertical portion 401 includes a third horizontal portion 405 that is vertically bent from the second vertical portion 401 and is in close contact with the side surface 153 of the cover bottom 150 .

Accordingly, static electricity generated from the touch panel 140 is grounded to the second and third horizontal portions 403 and 405 and the second vertical portion 401 made of a metal material of the guide panel 130 and discharged to the outside to be removed. In particular, as the third horizontal portion 405 contacts the cover bottom 150 , the second and third horizontal portions 403 and 405 of the guide panel 130 and the second vertical portion 401 and the cover Static electricity generated from the touch panel 140 by being grounded to the bottom 150 is completely discharged to the outside and removed.

Through this, due to static electricity generated from the touch panel 140 , it can be prevented from affecting the alignment direction of the liquid crystal molecules of the liquid crystal panel 110 , thereby inhibiting normal operating characteristics.

- 4th embodiment -

7 is a cross-sectional view schematically illustrating a part of a modular touch panel attached liquid crystal display device according to a fourth embodiment of the present invention, and FIGS. 8A to 8B are assembling and fastening the housing of FIG. 7 to the guide panel and the cover bottom. It is a diagram schematically showing the state of

7, the touch panel-attached liquid crystal display device according to the fourth embodiment of the present invention includes a reflective plate 125, a light guide plate 123, and a PCB on which LEDs 129a and LEDs 129a are mounted. The optical sheets 121 are stacked on the LED assembly 129 and the light guide plate 123 made of 129b to form a backlight unit ( 120 in FIG. 2 ).

In addition, the first and second substrates 112 and 114 and a liquid crystal panel 110 having a liquid crystal layer (not shown) interposed therebetween are positioned on the backlight unit ( 120 in FIG. 2 ), and the first and second Polarizing plates 119a and 119b for selectively transmitting only specific light are attached to the outer surfaces of the substrates 112 and 114, respectively.

In addition, the touch panel 140 is attached and positioned on the upper portion of the liquid crystal panel 110 through the adhesive member 141 .

Here, the backlight unit (120 in FIG. 2) is seated on the horizontal surface 151 of the cover bottom 150, and the edge of the backlight unit (120 in FIG. 2) is surrounded by the side surface 153 of the cover bottom 150, The liquid crystal panel 110 is positioned above the backlight unit ( 120 in FIG. 2 ) in a state in which an edge is surrounded by the first vertical part 131 of the guide panel 130 .

The liquid crystal panel 110 is attached and supported on the first horizontal portion 133 of the guide panel 130 through an adhesive pad 115 .

In addition, the touch panel 140 positioned above the liquid crystal panel 110 has a larger area than the liquid crystal panel 110 so as to cover the entire liquid crystal panel 110 and protrude to the outside of the liquid crystal panel 110 when viewed in a plan view. and has an extended form.

At this time, in the touch panel-attached liquid crystal display device according to the fourth embodiment of the present invention, a housing 500 made of a metal material is located inside the first vertical part 131 of the guide panel 130 , and the housing 500 ) is a second vertical part 501 positioned inside the first vertical part 131 , and one end of the second vertical part 501 is perpendicular to the second vertical part 501 to form the first of the guide panel 130 . and a second horizontal portion 503 completely covering the upper surface of the vertical portion 131 .

Accordingly, the housing including the second vertical portion 501 and the second horizontal portion 503 has a “T” shape in cross section.

At this time, the second horizontal portion 503 of the housing 500 comes into close contact with the touch panel 140 that protrudes outwardly of the liquid crystal panel 110 and extends.

The housing 500 is inserted from the outside of the first vertical part 131 of the guide panel 130 through the second vertical part 501 of the housing 500 to the side surface 153 of the cover bottom 150 . Through the screw 510 which becomes, it comes into electrical contact with the cover bottom 150 .

Accordingly, in the touch panel-attached liquid crystal display device according to the fourth embodiment of the present invention, the second horizontal portion 503 and the second vertical portion 501 of the housing 500 in which the touch panel 140 is made of a metal material, and Since it is in electrical contact with the cover bottom 150 through the screw 510 , static electricity generated from the touch panel 140 is grounded by the cover bottom 150 and completely discharged to the outside to be removed.

Through this, due to static electricity generated from the touch panel 140 , it can be prevented from affecting the alignment direction of the liquid crystal molecules of the liquid crystal panel 110 , thereby inhibiting normal operating characteristics.

Here, the housing 500 is assembled and fastened with the guide panel 130 through an assembly method, that is, as shown in FIG. 8A , the first vertical portion 131 of the guide panel 130 has a first vertical portion. A guide groove 137 is provided along the longitudinal direction of the 131 so that the second horizontal part 503 of the housing 500 is in close contact with the upper surface of the first vertical part 131 , the second vertical part 501 . Insert the end of the guide groove (137).

At this time, the first vertical portion 131 of the guide panel 130 is provided with a first screw fastening hole 511 in a direction perpendicular to the guide groove 137 , and the first vertical portion ( A screw fastening groove 513 is provided on the side surface of the cover bottom 150 to correspond to the first screw fastening hole 511 provided in 131 .

In addition, a second screw fastening hole 515 is also provided in the second vertical part 501 of the housing 500 to correspond to the first screw fastening hole 511 and the screw fastening groove 513 .

Accordingly, as shown in FIG. 8B , when the second vertical part 501 of the housing 500 is inserted into the guide groove 137 of the first vertical part 131 of the guide panel 130, the guide panel ( From the outside of the first vertical part 131 of 130, the screw 510 passes through the first screw fastening hole 511 and the second screw through hole 515, and is inserted into the screw fastening groove 513, The housing 500 is assembled and fastened to the guide panel 130 and the cover bottom 150 .

As described above, the touch panel integrated liquid crystal display device according to the fourth embodiment of the present invention further includes a housing 500 made of a metal material inside the guide panel 130, so that the touch panel ( The static electricity generated from 140) is grounded with the cover bottom 150 and discharged to the outside to be removed.

Through this, due to static electricity generated from the touch panel 140 , it can be prevented from affecting the alignment direction of the liquid crystal molecules of the liquid crystal panel 110 , thereby inhibiting normal operating characteristics.

The present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

110: liquid crystal panel (112, 114: first and second substrates)
119a, 119b: first and second polarizing plates, 115: adhesive pad
121: optical sheet, 123: light guide plate, 125: reflector
129: LED assembly (129a: LED, 129b: PCB)
130: guide panel (131: first vertical part, 133: first horizontal part)
140: touch panel, 141: adhesive member
150: cover bottom (151: horizontal plane, 153: side)
200: housing (201: second vertical part, 203: second horizontal part)
210: screw

Claims (10)

a liquid crystal panel;
a backlight unit positioned under the liquid crystal panel;
a cover bottom including a horizontal surface on which the liquid crystal panel and the backlight unit are mounted, and a side surface perpendicular to the horizontal surface;
a guide panel seated on the cover bottom, the guide panel including a first vertical portion surrounding edges of the liquid crystal panel and the backlight unit and a first horizontal portion on which the liquid crystal panel is seated;
a touch panel attached to an upper portion of the liquid crystal panel;
a second horizontal portion in contact with the rear surface of the touch panel, made of a metal material, and disposed between the touch panel and the guide panel;
A second vertical part perpendicular to the second horizontal part and made of a metal material
A touch panel-attached liquid crystal display comprising a.
The method of claim 1,
The second vertical part is in close contact with the outside of the first vertical part, and the second horizontal part covers an upper surface of the first vertical part.
3. The method of claim 2,
and a screw inserted from the outside of the second vertical part through the first vertical part to the side surface.
4. The method of claim 3,
A protruding end is formed in the first vertical portion,
A chamfer part is provided at a portion of an edge formed by the second vertical part and the second horizontal part, and the protruding end is inserted into the chamfer part.
3. The method of claim 2,
A third horizontal part surrounding a lower surface of the first vertical part is provided at one end of the second vertical part opposite to the second horizontal part, and the third horizontal part is in contact with the side surface.
a liquid crystal panel;
a backlight unit positioned under the liquid crystal panel;
a cover bottom including a horizontal surface on which the liquid crystal panel and the backlight unit are mounted, and a side surface perpendicular to the horizontal surface;
a guide panel seated on the cover bottom, the guide panel including a first vertical portion surrounding edges of the liquid crystal panel and the backlight unit and a first horizontal portion on which the liquid crystal panel is seated;
a touch panel attached to an upper portion of the liquid crystal panel;
a second horizontal part in contact with the touch panel and made of a metal material;
A second vertical part perpendicular to the second horizontal part and made of a metal material
including,
The second vertical portion is positioned inside the first vertical portion, and the second horizontal portion covers an upper surface of the first vertical portion.
7. The method of claim 6,
A third horizontal portion perpendicular to the second vertical portion is provided at one end of the second vertical portion opposite to the second horizontal portion, and the third horizontal portion is in contact with the side surface.
7. The method of claim 6,
and a screw inserted into the side surface through the first vertical part and the second vertical part from the outside of the first vertical part.

The method of claim 1,
The second horizontal portion in contact with the rear surface of the touch panel is in contact with an upper surface of the first vertical portion of the guide panel.
The method of claim 1,
The first vertical portion of the guide panel is in contact with a rear surface of the touch panel, and the second horizontal portion is in contact with an inner surface of the first vertical portion.

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