KR20030094722A - Apparatus for assembly and method for fabrication liquid crystal display panel associated with touch panel using the same - Google Patents

Abstract

PURPOSE: A bonding apparatus and a method for manufacturing an integrated touch panel liquid crystal display panel using the same are provided to prevent bubbles from generating in bonding a liquid crystal panel with a touch panel and completely remove the rest bubble between the liquid crystal panel and the touch panel. CONSTITUTION: A first fixing unit fixes a liquid crystal panel where pixel cells are arranged in matrix type. A second fixing unit fixes a touch panel to be opposite to the liquid crystal panel. A roller of a bonding apparatus(100) bonds the touch panel fixed at the second fixing unit with the liquid crystal panel. A bubble remover(102) removes bubbles mixed between the liquid crystal panel and the touch panel.

Description

Adhesion apparatus and manufacturing method of touch panel integrated liquid crystal display panel using the same {APPARATUS FOR ASSEMBLY AND METHOD FOR FABRICATION LIQUID CRYSTAL DISPLAY PANEL ASSOCIATED WITH TOUCH PANEL USING THE SAME}

The present invention relates to a method of manufacturing a touch panel integrated liquid crystal display panel, and more particularly, to a bonding apparatus for preventing bubbles from being attached to a liquid crystal panel and a method of manufacturing a touch panel integrated liquid crystal display panel using the same.

The touch panel, which is an integrated display device, generates a voltage or current signal corresponding to a position where a stylus pen or a finger is pressed to input a command or graphic information designated by a user.

The touch panel may be a cathode ray tube (hereinafter referred to as "CRT"), a liquid crystal display (hereinafter referred to as "LCD"), or a field emission display (hereinafter referred to as "FED"). Image display device such as a plasma display panel (hereinafter referred to as "PDP") and an electroluminescent device (hereinafter referred to as "ELD"). It is a computer peripheral that presses the touch panel while watching and inputs predetermined information into the computer.

Herein, the touch panel integrated with the liquid crystal panel in the liquid crystal display will mainly be described.

In general, in the liquid crystal display device on which the touch panel 10 is mounted, as shown in FIG. 1, the touch panel 10, the liquid crystal panel 20, and the backlight unit 30 are all independently present. To this end, the touch panel 10 is connected to the touch controller 2 by a signal line 8 (FPC), and the touch controller 2 is electrically connected to the computer main body 4 again.

When the operation thereof is described, when the upper portion of the touch panel 10 is touched with a predetermined pressure or more, the voltage value at the position is calculated by the touch controller 2 to recognize the coordinates.

FIG. 2 illustrates a liquid crystal panel in which the resistive touch panel of FIG. 1 is mounted.

Referring to FIG. 2, the touch panel 10 mounted on the liquid crystal panel 20 includes an upper substrate 12 and a lower substrate 14, and a polarizing plate 32 attached to the rear surface of the lower substrate 14. Equipped.

First, the liquid crystal panel 20 on which the touch panel 10 is mounted has a liquid crystal material 34 and a spacer 39 injected between the lower plate 24 and the upper plate 22.

The gate line 26, the insulating layer 27, the pixel electrode 28, and the first alignment layer 31 are sequentially formed on the lower substrate 25 of the lower plate 24. The black matrix 38, the color filter 37, the common electrode 36, and the second alignment layer 35 are sequentially formed on the rear surface of the upper substrate 29 of the upper plate 22.

The spacers 39 are dispersed on the first alignment layer 31 before the upper plate 22 and the lower plate 24 are bonded to each other. The upper plate 22 and the lower plate 24 are spaced apart from each other by the spacer 39 to be maintained at a constant interval. In other words, the spacer 39 uniformly maintains the thickness of the liquid crystal material 34 injected between the upper substrate 22 and the lower substrate 24 by keeping the distance between the upper plate 22 and the lower plate 24 uniform. do.

The touch panel 10 has a spacer 17 scattered between the lower plate 14 and the upper plate 12 made of polyethylene terephthalate (hereinafter referred to as "PET") film.

The lower transparent film 16 is formed on the lower sheet 15 of the lower plate 14, and the upper transparent film 18 is formed on the rear surface of the upper sheet 19 of the upper plate 12.

The upper sheet 19 is formed of polyethylene terephthalate (hereinafter referred to as "PET"), and the lower sheet 15 is formed of any one of glass, plastic, and PET.

The upper and lower transparent films 18 and 16 are transparent conductive materials having good transmittance, for example, indium-tin-oxide (hereinafter referred to as "ITO") and indium zinc oxide, which are transparent conductive materials. (Indium-Zinc-Oxide; hereinafter referred to as "IZO") and Indium-Tin-Zinc-Oxide (hereinafter referred to as "ITZO"). In particular, ITO materials are mainly used.

An upper electrode layer is formed at an end on the upper transparent film 18, and a lower electrode layer is formed at an end on the lower transparent film 16. The upper electrode layer is shorted with the lower electrode layer when the upper sheet 19 is pressed by a stylus pen or finger to generate a signal having a current amount or voltage level that varies depending on the pressed position. In this case, the upper and lower electrode layers are formed by printing a conductive metal material, for example, silver (Ag). The upper and lower transparent films 18 and 16 are both formed of an amorphous ITO structure or of a crystalline ITO structure.

The polarizer 32 is formed on the lower plate 14 of the touch panel 10 to change visible light into linearly polarized light on both sides of the liquid crystal panel 20. The touch panel 10 is mounted on the liquid crystal panel 20 by an adhesive agent 33 formed between the polarizing plate 32 and the upper plate 22 of the liquid crystal panel 20.

3 illustrates a bonding apparatus for mounting the touch panel 10 on the liquid crystal panel 20. Referring to FIG. 3, the bonding apparatus includes a lower adsorption plate 40 on which the liquid crystal panel 20 is loaded, and a touch panel ( The upper suction plate 42 to which the 10 is loaded, and the roller 44 for bonding the touch panel 10 to the liquid crystal panel 20 are provided.

The lower suction plate 40 has a plurality of holes formed therein and these holes are connected to a vacuum suction device (not shown). The lower adsorption plate 40 adsorbs the liquid crystal panel 20 loaded by the loading device not shown through the holes. The lower suction plate 40 is transferred in the horizontal direction by a driving device (not shown).

The upper suction plate 42 is formed with a plurality of holes and these holes are connected to a vacuum suction device (not shown). The upper suction plate 42 sucks the touch panel 10 loaded by the loading device not shown through the holes. The upper suction plate 42 is fixed to face the lower suction plate 40 and has a predetermined inclination such that the absorbed touch panel 10 slides onto the liquid crystal panel 20 and falls down.

The roller 44 is installed between the lower adsorption plate 40 and one side of the upper adsorption plate 42 to bond the touch panel 10 sliding down from the upper adsorption plate 42 onto the liquid crystal panel 20. To this end, the roller 44 rotates counterclockwise and presses the touch panel 10 to a predetermined pressure.

As such, when the liquid crystal panel 20 and the touch panel 10 are loaded on the lower and upper suction plates 40 and 42, respectively, the bonding device touches on the upper suction plate 42 while the lower suction plate 40 is transferred in the horizontal direction. The panel 10 slides. The sliding touch panel 10 is bonded to the liquid crystal panel 20 from the right side to the left side by being pressed by the rotation of the roller 44. At this time, while the touch panel 10 is bonded to the liquid crystal panel 20 from the right side to the left side, the roller 44 is located at the end of the touch panel 10 by the gravity and elasticity of the upper panel. At 42, the end of the touch panel 10 is first dropped on the liquid crystal panel 20 to be in contact with the string end of the liquid crystal panel 20. As a result, a circular bubble A flows between the end of the touch panel 10 and the roller 44. The roller 44 continues to rotate while the bubble A flows in between the liquid crystal panel 20 and the touch panel 10 to bond the touch panel 10 and the liquid crystal panel 20 to the liquid crystal panel 10. Long band-shaped bubbles remain in the terminal portion of the touch panel 10.

As described above, in order to prevent the touch panel 10 from falling down first of the touch panel 10 in the upper suction plate 42, the suction force of the upper suction plate 42 may be increased. However, the adsorption force of the upper adsorption plate 42 is higher than a certain pressure because the material of the touch panel 10 is the film and the upper and lower substrates are both films, so that their linearity distortion, or wrinkles, may be generated by high vacuum adsorption. There is a limit to increase.

Accordingly, another conventional bonding apparatus includes a lower adsorption plate 50 on which the touch panel 10 is loaded, an upper adsorption plate 52 on which the liquid crystal panel 20 is loaded, and a touch panel 10 on the liquid crystal panel 20. To the roller 54 is provided.

The upper suction plate 52 is formed with a plurality of holes and these holes are connected to a vacuum suction device (not shown). The upper suction plate 52 sucks the liquid crystal panel 20 loaded by the loading device not shown through the holes. The upper suction plate 52 is transported in the horizontal direction by a driving device (not shown).

The lower suction plate 50 has a plurality of holes formed therein and these holes are connected to a vacuum suction device (not shown). The lower adsorption plate 50 adsorbs the touch panel 10 loaded by a loading device not shown through the holes. The lower suction plate 50 is fixed to face the upper suction plate 52 and has a predetermined inclination such that the absorbed touch panel 10 slides onto the liquid crystal panel 20 and falls down.

The roller 54 is installed between the lower adsorption plate 50 and one side of the upper adsorption plate 52 to bond the touch panel 10 sliding down from the upper adsorption plate 52 onto the liquid crystal panel 20. To this end, the roller 54 rotates clockwise and presses the touch panel 10 to a predetermined pressure.

As such, when the liquid crystal panel 20 and the touch panel 10 are loaded on the lower and upper suction plates 50 and 52, respectively, the bonding device touches on the lower suction plate 50 while the upper suction plate 52 is transferred in the horizontal direction. The panel 10 slides on the liquid crystal panel 20. The sliding touch panel 10 is bonded to the liquid crystal panel 20 from right to left as it is pressed by the rotation of the roller 54. At this time, while the touch panel 10 is joined from the right side to the left side of the liquid crystal panel 20 by the rollers 54, the gravity and elasticity of the touch panel 10 in the opposite direction are opposite at the end of the touch panel 10. Since the first and second ends of the touch panel 10 are reduced before they are rolled, the bubble B is minimized. However, since bubbles B are generated between the liquid crystal panel 20 and the touch panel 10, band-shaped stripes occur on the bonded liquid crystal panel 10 and the touch panel 10.

Accordingly, it is an object of the present invention to provide a bonding apparatus and a method for manufacturing a touch panel integrated liquid crystal display panel using the same to prevent bubbles from being generated when the touch panel is attached to the liquid crystal panel.

1 is a view showing a touch panel device mounted on a liquid crystal panel.

FIG. 2 is a cross-sectional view illustrating a liquid crystal panel on which the touch panel illustrated in FIG. 1 is mounted.

3 is a cross-sectional view schematically showing a conventional bonding apparatus for bonding the liquid crystal panel and the touch panel.

4 is a cross-sectional view schematically showing another conventional bonding apparatus for bonding the liquid crystal panel and the touch panel.

5 is a block diagram showing a bonding device according to an embodiment of the present invention.

6 is a cross-sectional view illustrating a touch panel, a polarizing plate, and a liquid crystal panel, respectively.

7 is a cross-sectional view showing a bonding device according to a first embodiment of the present invention.

8 is a cross-sectional view showing a bonding device according to a second embodiment of the present invention.

9 is a flowchart illustrating a method of manufacturing a touch panel integrated liquid crystal display panel according to an exemplary embodiment of the present invention.

10 is a cross-sectional view showing a bonding device according to a third embodiment of the present invention.

FIG. 11 is a flowchart illustrating a process for adsorbing a touch panel in a bonding apparatus according to a third embodiment of the present invention in a stepwise manner; FIG.

<Description of Symbols for Main Parts of Drawings>

2: touch panel controller 4: computer body

10, 110: touch panel 20, 120: liquid crystal panel

30: backlight unit 40, 50, 140, 150: lower suction plate

42, 52, 142, 152: upper suction plate 44, 54, 144, 154: roller

72, 172, 272: vacuum pressure generating unit 274: pressure regulator

276: Timer

In order to achieve the above object, the bonding apparatus according to the embodiment of the present invention is a first fixing part for fixing the liquid crystal panel in which the pixel cells are arranged in a matrix form, and a first fixing portion for fixing the touch panel to face the liquid crystal panel; A second fixing part, a roller for attaching the touch panel fixed to the second fixing part to the liquid crystal panel, and a defoamer for removing mixed bubbles between the bonded liquid crystal panel and the touch panel.

In the bonding apparatus, each of the first and second fixing portions adsorbs the touch panel and the liquid crystal panel under vacuum pressure.

One side of each of the first and second fixing parts adjacent to the roller in the bonding apparatus is rounded.

At least one of the first and second fixing parts in the bonding apparatus is transported in a horizontal direction, and the other is fixed to have a predetermined slope.

The bonding apparatus further includes a pressure regulator for adjusting the vacuum pressure of the first and second fixing units, and a timer for controlling the pressure regulator by detecting a bonding time of the touch panel and the liquid crystal panel.

In the bonding apparatus, the pressure regulator supplies a first vacuum pressure to the second fixing part according to a control signal of the timer, and supplies a second vacuum pressure at least two times higher than the first vacuum pressure to the second fixing part. It characterized in that the supply to.

The degassing apparatus in the bonding apparatus is characterized in that for pressing the bonded touch panel and the liquid crystal panel at a temperature higher than room temperature and pressure above atmospheric pressure.

According to one or more exemplary embodiments, a method of manufacturing a touch panel integrated liquid crystal display panel includes preparing a liquid crystal panel in which pixel cells are arranged in a matrix, preparing a touch panel, and stacking at least two films. Providing a polarization plate, attaching the polarizing plate to the touch panel, bonding the touch panel and the liquid crystal panel to which the polarizing plate is attached, and mixing air bubbles between the bonded liquid crystal panel and the touch panel. Removing.

The manufacturing method may further include attaching a tape carrier package having a driving circuit mounted on the liquid crystal panel, and attaching a printed circuit board to the liquid crystal panel.

Removing the bubbles in the manufacturing method is characterized in that for pressing the bonded touch panel and the liquid crystal panel at a temperature higher than the normal temperature and pressure above atmospheric pressure.

In the manufacturing method, the bonding of the liquid crystal panel and the touch panel may include adsorbing each of the liquid crystal panel and the touch panel with a first adsorption force, and pressing and bonding the liquid crystal panel and the touch panel transferred by the first adsorption force. And a second step of pressurizing and bonding the liquid crystal panel and the touch panel which are transferred by a second suction force that is at least two times higher than the first suction force.

In the manufacturing method, at least one of the liquid crystal panel and the touch panel is transferred in a horizontal direction, and the other is slid to have a predetermined slope.

Other objects and features of the present invention in addition to the above objects will be apparent from the description of the embodiments with reference to the accompanying drawings.

A preferred embodiment of the present invention will be described with reference to FIGS. 5 to 9.

Referring to FIG. 5, a bonding apparatus according to an exemplary embodiment of the present invention may include a bonding device 100 for bonding a touch panel with a polarizing plate to a liquid crystal panel in which pixel cells are arranged in a matrix, and between a liquid crystal panel and a touch panel. It is provided with a defoaming device 102 for removing bubbles mixed in.

As shown in FIG. 6, the liquid crystal panel 120 has a liquid crystal material 134 and a spacer 139 injected between the lower plate 124 and the upper plate 122. The gate line 126, the insulating layer 127, the pixel electrode 128, and the first alignment layer 131 are sequentially formed on the lower substrate 125 of the lower plate 124. The black matrix 138, the color filter 137, the common electrode 136, and the second alignment layer 135 are sequentially formed on the rear surface of the upper substrate 129 of the upper plate 122. The spacer 139 is dispersed on the first alignment layer 131 before the upper plate 122 and the lower plate 124 are bonded to each other. The upper plate 122 and the lower plate 124 are spaced apart to be maintained at a constant interval by the spacer 139. In other words, the spacer 139 uniformly maintains the thickness of the liquid crystal material 134 injected between the upper substrate 122 and the lower substrate 124 by keeping the gap between the upper plate 122 and the lower plate 124 uniform. do.

As illustrated in FIG. 6, the touch panel 110 has a spacer 117 scattered between the lower plate 114 and the upper plate 112 made of polyethylene terephthalate (hereinafter referred to as “PET”) film. The lower transparent film 116 is formed on the lower sheet 115 of the lower plate 114, and the upper transparent film 118 is formed on the rear surface of the upper sheet 119 of the upper plate 112. The upper sheet 119 is formed of polyethylene terephthalate (hereinafter referred to as “PET”), and the lower sheet 115 is formed of any one of glass, plastic, and PET.

The upper and lower transparent films 118 and 116 are transparent conductive materials having good transmittance, for example, indium-tin-oxide (hereinafter referred to as "ITO") and indium zinc oxide, which are transparent conductive materials. (Indium-Zinc-Oxide; hereinafter referred to as "IZO") and Indium-Tin-Zinc-Oxide (hereinafter referred to as "ITZO"). In particular, ITO materials are mainly used. An upper electrode layer is formed at an end on the upper transparent film 118, and a lower electrode layer is formed at an end on the lower transparent film 116. The upper electrode layer is shorted with the lower electrode layer when the upper sheet 119 is pressed by a stylus pen or finger to generate a signal having a current amount or voltage level that varies depending on the pressed position. In this case, the upper and lower electrode layers are formed by printing a conductive metal material, for example, silver (Ag). The upper and lower transparent films 118 and 116 are both formed of an amorphous ITO structure or of a crystalline ITO structure.

At least one film 132 is stacked on the polarizer 130, and is attached to the lower plate 114 of the touch panel 110 to change visible light into linearly polarized light on both sides of the liquid crystal panel 120. .

As shown in FIG. 7, the bonding apparatus 100 according to the first embodiment of the present invention has a lower suction plate 140 on which the liquid crystal panel 120 is loaded, and an upper suction plate 142 on which the touch panel 110 is loaded. And a roller 144 for bonding the touch panel 110 to the liquid crystal panel 120, and a vacuum pressure generating unit 72 for generating a vacuum pressure and supplying the upper and lower suction plates 142 and 140, respectively. do.

The lower suction plate 140 has a plurality of holes formed therein, and the holes are supplied with a vacuum pressure having a predetermined pressure from the vacuum pressure generator 72. The lower adsorption plate 140 adsorbs the liquid crystal panel 120 loaded by a loading device not shown through the holes. The lower suction plate 140 is transferred in the horizontal direction by a driving device (not shown).

The upper suction plate 142 is formed with a plurality of holes, the vacuum pressure having a predetermined pressure from the vacuum pressure generating unit 72 is supplied to these holes. In addition, the upper suction plate 142 is rounded 111 so that one side adjacent to the roller 144 corresponds to the circumference of the roller 144 so that the touch panel 110 slides at a position adjacent to the liquid crystal panel 120. It is fixed to face the adsorption plate 140 and has a predetermined inclination so that the absorbed touch panel 110 slides onto the liquid crystal panel 120 and falls. The upper suction plate 142 sucks the touch panel 110 loaded by a loading device not shown through the holes.

The roller 144 is installed between the lower adsorption plate 140 and one side of the upper adsorption plate 142 to bond the touch panel 110 sliding down from the upper adsorption plate 142 onto the liquid crystal panel 120. To this end, the roller 144 is rotated counterclockwise to press the touch panel 110 to a predetermined pressure.

As such, the bonding apparatus 100 according to the first embodiment of the present invention has a lower adsorption plate when the liquid crystal panel 120 and the touch panel 110 are respectively loaded by the vacuum pressure of the lower and upper adsorption plates 140 and 142. The touch panel 110 is slid from the upper suction plate 142 while the 140 is transferred in the horizontal direction. The sliding touch panel 110 is bonded to the liquid crystal panel 120 from the right side to the left side by being pressed by the rotation of the roller 144.

As such, the liquid crystal panel 120 to which the touch panel 110 is bonded is transferred to the defoaming device 102 shown in FIG. 5. In the degassing apparatus 102, the touch panel 110 is dropped by its elasticity and gravity before the touch panel 110 is bonded to the liquid crystal panel 220 by the roller 244 during bonding, and the liquid crystal panel and the liquid crystal are touched at the end of the bonding. The air bubbles minutely mixed on the panel 120 are removed. To this end, the defoaming device 102 is provided with a chamber (not shown) having a temperature of 60 ° C. and a pressure condition above atmospheric pressure. The liquid crystal panel 120 and the touch panel 110 are applied to the liquid crystal panel 120 to which the touch panel 110 is bonded by applying a temperature higher than room temperature to the liquid crystal panel 120 to which the touch panel 110 is bonded in the chamber. ) To increase the flexibility of the pressure-sensitive adhesive to increase the activity of the internal air. In addition, by applying a pressure higher than atmospheric pressure to the liquid crystal panel 120 to which the touch panel 110 is bonded, bubbles mixed between the liquid crystal panel 120 and the touch panel 110 may be easily removed. Since the degassing apparatus 102 proceeds at a temperature higher than room temperature, the defoaming device 102 obtains a heat treatment effect to improve adhesion between the liquid crystal panel 120 and the touch panel 110.

Referring to FIG. 8, the bonding apparatus according to the second embodiment of the present invention includes a lower adsorption plate 150 on which the touch panel 110 is loaded, an upper adsorption plate 152 on which the liquid crystal panel 120 is loaded, and a touch panel. A roller 154 for attaching the 110 to the liquid crystal panel 120 and a vacuum pressure generator 172 for generating a vacuum pressure and supplying the upper and lower suction plates 152 and 150, respectively.

A plurality of holes are formed in the upper suction plate 152, and the holes are supplied with a vacuum pressure having a predetermined pressure from the vacuum pressure generator 172. The upper suction plate 152 adsorbs the liquid crystal panel 120 loaded by a loading device not shown through the holes. The upper suction plate 152 is transferred in the horizontal direction by a driving device (not shown).

The lower suction plate 150 has a plurality of holes formed therein, and the holes are supplied with a vacuum pressure having a predetermined pressure from the vacuum pressure generator 172. The lower suction plate 150 adsorbs the touch panel 110 loaded by the loading device not shown through the holes. The lower suction plate 150 is rounded 151 such that one side adjacent to the roller 154 corresponds to the circumference of the roller 154 so that the touch panel 110 slides at a position adjacent to the liquid crystal panel 120. It is fixed to face the adsorption plate 152 and has a predetermined inclination such that the absorbed touch panel 110 slides onto the liquid crystal panel 120 and falls.

The roller 154 is installed between the lower adsorption plate 150 and one side of the upper adsorption plate 152 to bond the touch panel 110 sliding down from the upper adsorption plate 152 onto the liquid crystal panel 120. To this end, the roller 154 is rotated in a clockwise direction to press the touch panel 110 to a predetermined pressure.

As such, in the bonding apparatus according to the second embodiment of the present invention, when the liquid crystal panel 120 and the touch panel 110 are loaded on the lower and upper suction plates 150 and 152, the upper suction plate 152 is transferred in the horizontal direction. At the same time, the touch panel 110 slides on the liquid crystal panel 120 in the lower adsorption plate 150. The sliding touch panel 110 is bonded to the liquid crystal panel 120 from the right side to the left side by being pressed by the rotation of the roller 154.

As such, the liquid crystal panel 120 to which the touch panel 110 is bonded is transferred to the defoaming device 102 as shown in FIG. 5. In the degassing apparatus 102, bubbles mixed finely on the touch panel 110 and the liquid crystal panel 120 are removed during bonding. To this end, the defoaming apparatus has a chamber (not shown) having a temperature of 60 ° C. and a pressure condition above atmospheric pressure. The liquid crystal panel 120 and the touch panel 110 are applied to the liquid crystal panel 120 to which the touch panel 110 is bonded by applying a temperature higher than room temperature to the liquid crystal panel 120 to which the touch panel 110 is bonded in the chamber. ) To increase the flexibility of the pressure-sensitive adhesive to increase the activity of the internal air. In addition, by applying a pressure higher than atmospheric pressure to the liquid crystal panel 120 to which the touch panel 110 is bonded, bubbles mixed between the liquid crystal panel 120 and the touch panel 110 may be easily removed. Since the degassing apparatus 102 proceeds at a temperature higher than room temperature, the defoaming device 102 obtains a heat treatment effect to improve adhesion between the liquid crystal panel 120 and the touch panel 110.

Referring to FIG. 9, in the method of manufacturing a touch panel integrated liquid crystal display panel using the bonding apparatus according to the first and second embodiments of the present invention, first, a liquid crystal panel, a polarizing plate, and a touch panel as shown in FIG. 6 are manufactured. do. (9S1 step)

When the liquid crystal panel, the touch panel, and the polarizing plate are manufactured, the polarizing plate is attached to the touch panel. (9S2 step)

Then, the touch panel is bonded onto the liquid crystal panel using the bonding device. (9S3 step)

When the touch panel is attached to the liquid crystal panel, a TCP (Tape Carrier Package) in which driving circuits (not shown) are mounted is attached to the liquid crystal panel in which the touch panel is integrated. (9S4 step)

Then, the air bubbles finely mixed between the touch panel and the liquid crystal panel bonded in the chamber (not shown) having a temperature of 60 ° C. and a pressure condition above atmospheric pressure are removed. (9S5 step)

When the defoaming process between the touch panel and the liquid crystal panel is completed, the printed circuit board is attached to the liquid crystal panel. (9S6 step)

As described above, a method of manufacturing a touch panel integrated liquid crystal display panel according to an exemplary embodiment of the present invention may include a liquid crystal panel and a liquid crystal panel in a chamber (not shown) having a pressure condition of 60 ° C. and atmospheric pressure after bonding the liquid crystal panel and the touch panel together. By removing finely mixed bubbles between the touch panels, it is possible to prevent appearance defects due to bubbles generated in the manufacturing process of the touch panel.

Referring to FIG. 10, the bonding apparatus according to the third embodiment of the present invention includes a lower suction plate 240 on which the liquid crystal panel 220 is loaded, an upper suction plate 242 on which the touch panel 210 is loaded, and a touch panel. The roller 244 for bonding the 210 to the liquid crystal panel 220, the vacuum pressure generator 272 for generating a vacuum pressure, the timer 276 for generating a pressure control signal, and the timer 276. And a pressure regulator 274 for adjusting the vacuum pressure supplied from the vacuum pressure generator 272 to the upper and lower suction plates 242 and 240 in response to the control signal.

The lower suction plate 240 has a plurality of holes formed therein, and the holes are supplied with the adjusted pressure to the pressure regulator 274. The lower adsorption plate 240 adsorbs the liquid crystal panel 220 loaded by a loading device not shown through the holes. The lower suction plate 240 is transferred in the horizontal direction by a driving device (not shown).

The upper suction plate 242 is formed with a plurality of holes, the pressure is supplied to the pressure regulator 274. In addition, the upper suction plate 242 is rounded so that the one side adjacent to the roller 244 corresponds to the circumference of the roller 244 so that the touch panel 210 slides at a position adjacent to the liquid crystal panel 220, and the lower suction plate 240 In addition, the touch panel 210 is fixed so as to face a side surface of the panel, and the absorbed touch panel 210 slides onto the liquid crystal panel 220 to have a predetermined slope. The upper suction plate 242 sucks the touch panel 210 loaded by the loading device not shown through the holes.

The roller 244 is installed between the lower adsorption plate 240 and one side of the upper adsorption plate 242 to bond the touch panel 210 sliding down on the upper adsorption plate 242 onto the liquid crystal panel 220. To this end, the roller 244 rotates counterclockwise and presses the touch panel 210 to a predetermined pressure.

The timer 276 is turned on when the touch panel 210 is attached to the liquid crystal panel 220 by the roller 244, and is turned on from the vacuum pressure generator 272 to the upper and lower suction plates 242 and 240. The pressure regulator 274 is controlled to supply the supplied vacuum pressure to the first pressure. Then, when the set time has elapsed, the timer 276 is turned off so that the upper and lower suction plates 242 have a second pressure that is two to three times increased from the first pressure supplied from the vacuum pressure generator 272. The pressure regulator 274 is controlled to be supplied to 240. At this time, the timer 276 is turned on (ON) from the start time of the adhesion to the end of the adhesion.

The pressure regulator 274 adjusts the vacuum pressure supplied from the vacuum pressure generator 272 in response to the control signal of the timer 276 and supplies the pressure to the upper and lower suction plates 242 and 240, respectively.

As such, in the bonding apparatus according to the third embodiment of the present invention, the liquid crystal panel 210 loaded by a loading apparatus (not shown) is applied to the vacuum pressure supplied from the vacuum pressure generator 272 through the pressure regulator 274. The touch panel 210 attached to the lower adsorption plate 240 and attached with a polarizing plate loaded by a loading device (not shown) is applied to the vacuum pressure supplied from the vacuum pressure generator 272 through the pressure regulator 274. By the lower adsorption plate 242.

Then, the lower adsorption plate 240 on which the liquid crystal panel 220 is adsorbed is transferred in the horizontal direction, and the touch panel 210 is slid toward the liquid crystal panel 220 so that the touch panel 210 has a predetermined inclination in the upper adsorption plate 242. The sliding touch panel 210 is bonded to the liquid crystal panel 220 from right to left as it is pressed by the rotation of the roller 244. At this time, when the bonding is started by the roller 244, the timer 276 is driven. While the timer 276 is driven, the roller 244 continues to attach the touch panel 210 to the liquid crystal panel 220. Then, when the timer 276 turns off after the set time elapses, a control signal is supplied from the timer 276 to the pressure regulator 274. The pressure regulator 274 increases the vacuum pressure from the vacuum pressure generator 272 by at least 2 to 3 times in response to the off signal of the timer 276 and supplies it to the upper suction plate 242. Accordingly, the upper bonding plate 242 adsorbs the touch panel 210 at a higher vacuum pressure than the starting point of bonding at the bonding end portion. As a result, the touch panel 210 is prevented from falling before the touch panel 210 is bonded to the liquid crystal panel 220 by the roller 244 by the elasticity and the weight of the touch panel 210.

As such, the liquid crystal panel 220 to which the touch panel 210 is bonded is transferred to the degassing apparatus 102 as shown in FIG. 5 and finely mixed on the touch panel 210 and the liquid crystal panel 220 during bonding. The bubbles are removed. To this end, the defoaming device 102 is provided with a chamber (not shown) having a temperature of 60 ° C. and a pressure condition above atmospheric pressure. The liquid crystal panel 220 and the touch panel 210 are applied to the liquid crystal panel 220 to which the touch panel 210 is bonded by applying a temperature higher than room temperature to the liquid crystal panel 220 to which the touch panel 210 is bonded in the chamber. ) To increase the flexibility of the pressure-sensitive adhesive to increase the activity of the internal air. In addition, by applying a pressure higher than atmospheric pressure to the liquid crystal panel 220 to which the touch panel 210 is bonded, bubbles mixed between the liquid crystal panel 220 and the touch panel 210 may be easily removed. Since the degassing apparatus 102 is processed at a temperature higher than room temperature, the degassing apparatus 102 obtains a heat treatment effect to improve adhesion between the liquid crystal panel 220 and the touch panel 210.

The manufacturing method of the touch panel integrated liquid crystal display panel using the bonding apparatus according to the third embodiment of the present invention will be described with reference to FIG. 9 as follows. First, as shown in FIG. 6, a liquid crystal panel, a polarizing plate, and a touch panel are manufactured. (9S1 step)

When the liquid crystal panel, the touch panel, and the polarizing plate are manufactured, the polarizing plate is attached to the touch panel. (9S2 step)

Then, the touch panel is bonded onto the liquid crystal panel using the bonding device. (9S3 step)

The bonding of the liquid crystal panel and the touch panel will be described with reference to FIG. 11. First, the touch panel 210 is first the upper suction plate 242 by the vacuum pressure supplied from the vacuum pressure generator 272 through the pressure regulator 274. ) Is adsorbed. (8S1 step)

Then, the touch panel 210 is bonded to the liquid crystal panel 220 while the roller 244 is rotated. (8S2 step)

When the touch panel 210 is attached to the liquid crystal panel 220 by the roller 244, the timer 276 is turned on. Accordingly, the upper suction plate 240 slides the touch panel 210 toward the liquid crystal panel 220 by using the first vacuum pressure supplied from the pressure regulator 274. (8S3 step)

For this reason, when the timer 276 is turned off after the set time while the adhesion is progressed on the touch panel 210 and the liquid crystal panel 220 by the roller 244, the pressure from the timer 276 is reduced. The control signal is supplied to the pressure regulator 274 to increase the vacuum pressure supplied to the upper suction plate 242 at the end of the touch panel 110 to the second vacuum pressure. That is, the second vacuum pressure is at least two to three times higher than the first vacuum pressure. (8S4 step and 8S5 step)

In the bonding step of the touch panel 210 and the liquid crystal panel 220 as described above, the end portion of the touch panel 110 is increased by the weight and elastic force of the touch panel 210 by increasing the adsorption force of the end of the touch panel 210. By preventing it from falling, bubbles mixed in the bonding of the touch panel 210 and the liquid crystal panel 220 are minimized.

Then, the touch panel is attached to the liquid crystal panel, and the integrated liquid crystal panel 220 is provided with a tape carrier package (TCP) on which driving circuits (not shown) are mounted. (9S4 step)

Then, the air bubbles finely mixed between the touch panel and the liquid crystal panel bonded in the chamber (not shown) having a temperature of 60 ° C. and a pressure condition above atmospheric pressure are removed. (Step 9S5) In the degassing process, the touch panel 210 is bonded at a temperature higher than room temperature to the liquid crystal panel 220 to which the touch panel 210 is bonded in a chamber having a temperature of 60 ° C. and a pressure condition higher than atmospheric pressure. The liquid crystal panel 220 increases the flexibility of the pressure-sensitive adhesive for bonding the liquid crystal panel 220 and the touch panel 210 and increases the activity of internal air. In addition, by applying a pressure higher than atmospheric pressure to the liquid crystal panel 220 to which the touch panel 210 is bonded, bubbles mixed between the liquid crystal panel 220 and the touch panel 210 may be easily removed. Since the degassing apparatus proceeds at a temperature higher than room temperature, the degassing apparatus obtains a heat treatment effect to improve adhesion between the liquid crystal panel 220 and the touch panel 210.

Subsequently, when the defoaming process between the touch panel and the liquid crystal panel is completed, the printed circuit board is attached to the liquid crystal panel. (9S6 step)

As described above, a method of manufacturing a touch panel integrated liquid crystal display panel according to an exemplary embodiment of the present invention may include a liquid crystal panel and a liquid crystal panel in a chamber (not shown) having a pressure condition of 60 ° C. and atmospheric pressure after bonding the liquid crystal panel and the touch panel together. By removing finely mixed bubbles between the touch panels, it is possible to prevent appearance defects due to bubbles generated in the manufacturing process of the touch panel.

As described above, the bonding apparatus according to an embodiment of the present invention and the manufacturing method of the touch panel integrated liquid crystal display panel using the same control the adsorption force of the adsorption of the touch panel when the liquid crystal panel and the touch panel are bonded, and the degassing process after the bonding. Will be performed. Accordingly, the present invention can prevent bubbles from being generated when the liquid crystal panel and the touch panel are bonded to each other as much as possible, and completely remove bubbles remaining between the liquid crystal panel and the touch panel through a degassing process.

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.

Claims (12)

A first fixing part for fixing the liquid crystal panel in which the pixel cells are arranged in a matrix form; A second fixing part for fixing the touch panel to face the liquid crystal panel; A roller for attaching the touch panel fixed to the second fixing part to the liquid crystal panel; And a degassing machine for removing air bubbles mixed between the bonded liquid crystal panel and the touch panel. The method of claim 1, And each of the first and second fixing portions adsorbs the touch panel and the liquid crystal panel under vacuum pressure. The method of claim 1, One side of each of the first and the second fixing portion adjacent to the roller is rounded device, characterized in that the rounded. The method of claim 1, At least one of the first and the second fixing portion is conveyed in the horizontal direction, the other one is fixed to have a predetermined slope. The method of claim 1, A pressure regulator for adjusting a vacuum pressure of the first and second fixing parts; And a timer for controlling the pressure regulator by detecting a bonding time between the touch panel and the liquid crystal panel. The method of claim 5, The pressure regulator supplies a first vacuum pressure to the second fixing part according to a control signal of the timer and supplies a second vacuum pressure to the second fixing part at least two times higher than the first vacuum pressure. A cementing apparatus characterized by the above. The method of claim 1, The degassing apparatus is a bonding apparatus, characterized in that for pressing the bonded touch panel and the liquid crystal panel at a temperature higher than room temperature and pressure above atmospheric pressure. Providing a liquid crystal panel in which pixel cells are arranged in a matrix; Preparing a touch panel; Providing a polarizing plate having at least two films laminated thereon; Attaching the polarizer to the touch panel; Bonding the touch panel to which the polarizer is attached and the liquid crystal panel; And removing the bubbles mixed between the bonded liquid crystal panel and the touch panel. The method of claim 8, Attaching a tape carrier package mounted with a driving circuit to the liquid crystal panel; The method of claim 1, further comprising attaching a printed circuit board to the liquid crystal panel. The method of claim 8, The removing of the bubbles may include pressing the bonded touch panel and the liquid crystal panel at a temperature higher than room temperature and a pressure higher than atmospheric pressure. The method of claim 8, Bonding the liquid crystal panel and the touch panel, Absorbing each of the liquid crystal panel and the touch panel with a first adsorption force; A first step of pressing and bonding the liquid crystal panel and the touch panel transferred by the first suction force; And a second step of pressing and bonding the liquid crystal panel and the touch panel which are transferred by a second adsorption force at least two times higher than the first adsorption force. The method of claim 11, At least one of the liquid crystal panel and the touch panel is transferred in a horizontal direction, and the other is slid so as to have a predetermined inclination.