KR101799491B1 - Automatic bonding system for LCD and automatic bonding method using the same - Google Patents

Abstract

The present invention relates to an automatic bonding system for a liquid crystal display and a bonding method using the same.
A feature of the present invention is that the process of bonding the liquid crystal panel and the touch panel through the optical adhesive resin is carried out through the automatic bonding system. Through this, automation of the bonding operation between the liquid crystal panel and the touch panel can be automated to increase the productivity and uniformity of the attachment state and stabilize the product, thereby improving the reliability of the product.
Particularly, the present invention has an effect of preventing the overflow of the adhesive resin applied for attachment of the touch panel and the liquid crystal panel by forming the overflow prevention pattern, It is possible to omit the cleaning step of the cleaning process, and the efficiency of the process can be further improved.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic bonding system for a liquid crystal display,

The present invention relates to an automatic bonding system for a liquid crystal display and a bonding method using the same.

In recent years, as the society has become a full-fledged information age, a display field for processing and displaying a large amount of information has rapidly developed, and various flat panel display devices have been developed in response to this.

Specific examples of such flat panel display devices include a liquid crystal display device (LCD), a plasma display panel (PDP), a field emission display (FED) And electroluminescence display device (ELD). These flat panel display devices are excellent in performance of thinning, light weight, and low power consumption, and are rapidly replacing existing cathode ray tubes (CRTs).

In particular, the liquid crystal display device is advantageous for moving picture display and has a high contrast ratio due to optical anisotropy and polarization of liquid crystal, thereby being actively used in TV, monitor, etc. .

Such a liquid crystal display device has a liquid crystal panel in which a liquid crystal panel is interposed between two adjacent substrates through a liquid crystal layer as an essential component and changes the alignment direction of the liquid crystal molecules in an electric field in the liquid crystal panel to realize a difference in transmittance do.

In recent years, a touch panel having the advantage of being able to input letters and pictures more conveniently and precisely has been widely used in electronic notebooks or personal information processing apparatuses. Recently, such a touch panel is attached to a lateral electric field type liquid crystal display A touch panel type liquid crystal display device is provided.

On the other hand, the structures laminated on the liquid crystal panel basically use a colorless transparent material, but there is a limitation in maintaining the color of the image displayed on the liquid crystal panel as the number of constituent elements stacked increases.

Therefore, in order to attach the touch panel on the liquid crystal panel, it is preferable to form an adhesive such as a double-sided tape along the edges of the touch panel and the liquid crystal panel to adhere desirable.

However, even in such a case, an air gap exists between the touch panel and the liquid crystal panel, so that light is scattered due to a large difference in optical refraction index between the air gap and the liquid crystal panel, resulting in poor image quality. The structural strength is weakened, and the touch panel is easily broken by an external force.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a touch panel type liquid crystal display device capable of providing a high quality screen, The purpose.

Another object of the present invention is to improve the productivity and quality of the product by quickly and precisely performing the process of bonding the touch panel and the liquid crystal panel.

According to an aspect of the present invention, there is provided a plasma display apparatus comprising: a first substrate supply unit supplying a first substrate in an in-line manner through a first stage and including a first film peeling unit; A second substrate supply unit supplying a second substrate in an in-line manner via a second stage, the second substrate supply unit including a second film peeling unit, a pattern forming unit, and an adhesive resin application unit; And a bonding portion including an adhesion portion including an adhesion portion including an inspecting portion and a hardened portion which is formed in an in-line manner through a third stage and proceeds with the adhesion process of the first substrate and the second substrate, The adhesive resin applied on the second substrate has a thickness corresponding to 90 to 95% of the height of the overflow prevention pattern formed along the edge of the second substrate through the pattern forming portion .

Here, a print pattern for blocking light is formed along an edge of the second substrate, the overflow prevention pattern is formed on the print pattern, the overflow prevention pattern has a width of 1000 mu m +/- 10% And has a height of 200 mu m +/- 50 mu m.

The resin and the adhesive resin are the same material having photo-curable properties.

The present invention also provides a method of manufacturing a semiconductor device, comprising the steps of: a) supplying a first substrate through a first stage and supplying a second substrate through a second stage; b) removing the protective film attached to one surface of each of the first substrate and the second substrate through the first and second film peeling portions; c) transferring the second substrate to the pattern forming unit through the second stage; d) applying a resin along the edges of the second substrate through the pattern forming portion and tapering the resin to form an overflow prevention pattern; (e) transferring the second substrate, on which the overflow prevention pattern is formed, to the adhesive resin application unit to apply adhesive resin in the overflow prevention pattern in a scan manner; f) transferring the first and second substrates to a vacuum attaching portion of a third stage, and rotating one of the first substrate and the second substrate by a reversing arm, ; ≪ / RTI > g) cementing the first and second substrates through the adhesive resin; h) transferring the assembled first and second substrates to an inspection unit and inspecting them; i) transferring the first and second bonded substrates to a curing unit, and curing the overflow prevention pattern and the adhesive resin by using an UV curing machine, and a method of bonding using the automatic bonding system for a liquid crystal display do.

Here, in the step b), the first and second film peeling units may include a peeling unit including a peeling tape supply roll, a winding roll, a peeling roller, and a clamp, (D), the pattern planet portion includes a dispensing unit including a dispenser and an optical unit. The dispensing unit may include a dispenser and an optical unit, And applies ultraviolet rays through the optical unit while applying the resin.

The optical unit may be a UV LED, a mercury UV lamp, or a metal halide lamp. The dispensing unit may include a laser displacement sensor. The dispensing unit may include a laser displacement sensor, The distance between the substrates is measured.

In addition, in the step e), the adhesive resin application unit may include a multi-nozzle unit including a storage tank and an injection head including a plurality of nozzles, Wherein the multi-nozzle unit is formed in a bar shape across the entire surface of the second substrate while the ejection head is scanned in one direction, And a control unit capable of controlling the amount of the resin, wherein the adhesive resin is applied so as to have a thickness corresponding to 90 to 95% of the height of the overflow prevention pattern.

The multi-nozzle unit includes a laser displacement sensor, and measures a distance between the multi-nozzle unit and the second substrate. Between the step c) and the step d) or between the steps d) and e) A vision aligning process is performed to confirm the position where the overflow prevention pattern is to be formed or the position, width and thickness where the overflow prevention pattern is formed.

In addition, in the step f), the bonding of the first and second substrates proceeds in a vacuum atmosphere, and in the step f), the inverting arm includes height adjusting means, So that the gap between them is constant.

In the step h), the presence or absence of bubbles or foreign matter may be inspected through the inspection unit, and the UV curing unit of step i) may be disposed on the upper part of the first and second substrates, Lt; / RTI >

In addition, the UV curing unit is a UV LED, a mercury UV lamp, or a metal halide lamp.

As described above, according to the present invention, the process of bonding the liquid crystal panel and the touch panel through the optical adhesive resin is carried out through the automatic bonding system, thereby automating the bonding operation between the liquid crystal panel and the touch panel, Uniformity and stability, and the reliability of the product can be improved.

Particularly, the present invention has an effect of preventing the overflow of the adhesive resin applied for attachment of the touch panel and the liquid crystal panel by forming the overflow prevention pattern, Can be omitted. Therefore, the efficiency of the process can be further improved.

In addition, in the process of forming the overflow prevention pattern, the resin is applied through the dispenser and is made thin through the optical unit, so that the overflow prevention pattern can have a certain thickness and a constant width. So that the efficiency of the process can be improved.

In addition, since the adhesive resin can be applied at one time while being scanned and moved through the multi-nozzle unit, the efficiency of the adhesive resin application process can be further improved, and the amount of the adhesive resin to be applied can be precisely controlled , The efficiency of the process can be improved.

In addition, by moving the adhesion process between the touch panel and the liquid crystal panel in the vacuum chamber, it is possible to prevent air and foreign matter from flowing into the adhesive resin layer between the touch panel and the liquid crystal panel.

In addition, by curing the overflow prevention pattern and the adhesive resin through the UV LED, it is possible to reduce the process efficiency and the process cost compared to the mercury UV lamp or the metal halide lamp .

Further, the image quality can be prevented from deteriorating and the internal strength against external impact or pressure can be improved.

1 is a cross-sectional view schematically showing a touch panel type liquid crystal display device according to an embodiment of the present invention.
FIGS. 2A and 2B are simplified cross-sectional views illustrating the operation of a touch sensor in a touch panel type liquid crystal display device according to an embodiment of the present invention.
3 is a plan view schematically showing a bonding system of a liquid crystal panel and a touch panel.
4 is a perspective view schematically showing a peeling unit;
5 is a perspective view schematically showing a dispensing unit;
6 is a perspective view schematically showing a multi-nozzle unit;
Fig. 7 is a perspective view schematically showing the pattern forming portion and the adhesive resin application portion of Fig. 2; Fig.
8A is a cross-sectional view schematically showing an overflow prevention pattern formed on a touch panel and an applied adhesive resin.
8B is a cross-sectional view schematically showing a state in which a liquid crystal panel and a touch panel are bonded.

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

1 is a cross-sectional view schematically showing a touch panel type liquid crystal display device according to an embodiment of the present invention.

As shown in the figure, the touch panel type liquid crystal display device 10 according to the embodiment of the present invention includes a liquid crystal panel 20 and a touch panel 30 above the liquid crystal panel 20.

The liquid crystal panel 20 includes a first substrate 21 as an array substrate and a second substrate 22 as a color filter substrate which are spaced apart from each other and facing each other. The liquid crystal layer 23 is interposed.

At this time, although not shown, a plurality of gate wirings formed parallel to each other and spaced apart from each other by a predetermined distance are formed on the first substrate 21 and data wirings which define pixel regions intersect the gate wirings.

A thin film transistor is formed at the intersection of the gate line and the data line in each pixel region, and a plurality of pixel electrodes are formed in each pixel region, which are connected to each other through the thin film transistor and the drain contact hole.

Here, the thin film transistor includes a gate electrode, a gate insulating film, a semiconductor layer, and a source and a drain electrode.

At this time, the pixel electrodes are separated into a plurality of bar electrodes, and are spaced apart from each other and are formed in each pixel region. In addition, a common wiring is formed in the same layer in parallel with the gate wiring, and a plurality of common electrodes are formed, which are electrically connected to the common wiring and are alternately spaced apart from the plurality of pixel electrodes separated in each pixel region.

On the other hand, as a modification, the pixel electrodes may be formed in a plate shape for each pixel region. At this time, a part of the pixel electrode may be formed so as to overlap the gate wiring, and may be configured to form the storage capacitor StgC.

When a plurality of pixel electrodes and a common electrode are spaced apart from each other in the pixel region, the first substrate 21 operates in the IPS mode, and only the plate- (21), it forms the first substrate (21) which operates in any one of the TN mode, the ECB mode and the VA mode. In the drawing, the first substrate 21 which operates in the IPS mode will be described as an example.

A black matrix having openings corresponding to the pixel regions is formed on the second substrate 22 facing the first substrate 21. Red, green, and blue color filters, which are sequentially and repeatedly arranged corresponding to the openings, A color filter layer is formed.

An overcoat layer is formed on the color filter layer.

At this time, first and second polarizers 25a and 25b selectively transmitting only specific light are attached to the outer surfaces of the first and second substrates 21 and 22, respectively.

The touch panel 30 is positioned above the liquid crystal panel 20.

The touch panel 30 located above the liquid crystal panel 20 is a resistive resistive digitizer and includes an upper substrate 32 in the form of a film on which the upper electrode 35 ) And a lower substrate 31 (see FIG. 2A) in which the lower electrode 33 (see FIG. 2A) is formed and a lower electrode 31 and a lower substrate 31 A spacer (not shown) is formed.

At this time, when the upper substrate 32 (see FIG. 2A) is brought into contact with any one point by a predetermined input means such as a finger 40 (see FIG. 2A) or a pen, (See FIG. 2A) and the lower electrode 33 (see FIG. 2A) formed on the lower substrate 31 (see FIG. 2A), and after the variation value of the capacitance is read, The position coordinates can be found according to the change of the potential difference.

2A and 2B are schematic cross-sectional views illustrating the operation of a touch sensor in a touch panel type liquid crystal display device according to an embodiment of the present invention.

For convenience of explanation, only the liquid crystal panel (20 of FIG. 1) and the first and second polarizing layers (25a and 25b of FIG. 1) are omitted and only the touch panel 30 is shown.

2A, a touch of the user's finger 40 or the like is applied to the surface of the upper substrate 32 of the touch panel 30 in the touch panel type liquid crystal display device 10 of FIG. 1 The fringe field formed between the upper electrode 35 and the lower electrode 33 is kept constant, so that there is no change in capacitance of the capacitor, so that the operation is not performed.

2B, when a touch of the user's finger 40 or the like is generated on the surface of the upper substrate 32 of the touch panel 30, the touch panel 30 is formed between the upper electrode 35 and the lower electrode 33 The fringe field is affected by the finger 40 to which the touch is made and changes, thereby detecting that the touch sensor is touched, thereby performing the operation at the time of touch.

That is, the touch sensor of the touch panel 30 has the shape of a capacitor composed of the lower electrode 33 and the upper electrode 35 and a gap spaced by a predetermined distance therebetween. In this case, When the contact is made, the capacitive change due to the variation of the fringe field of the capacitor is recognized, thereby acting as a touch sensor.

The touch panel 30 may be a resistive type, an infrared type, an ultrasonic type, or the like in addition to the electrostatic capacity type.

Here, the liquid crystal panel (20 in Fig. 1) and the touch panel 30 are bonded to each other through the optical adhesive resin 341 (see Fig. 6). The optical adhesive resin 341 Respectively.

1) and the touch panel 30 are bonded to the touch panel 30 by using the optical adhesive resin 341 (see Fig. 6) And the liquid crystal panel (20 in Fig. 1), even if the optical adhesive resin 341 (see Fig. 6) is formed to be very thin, sufficient internal strength can be secured against external force .

Also, since the refractive index of the optical adhesive resin 341 (see FIG. 6) is the same as that of the touch panel 30 and its thickness is thin, there is also an advantage that image quality deterioration due to light scattering does not occur.

1) and the touch panel 30 through the optical adhesive resin 341 (see FIG. 6) through the automatic bonding system 100 (see FIG. 3) .

Accordingly, automation of the bonding operation between the liquid crystal panel 20 (FIG. 1) and the touch panel 30 can be automated to increase the productivity and uniformity of the attached state, thereby improving the reliability of the product.

Fig. 3 is a plan view schematically showing a bonding system of a liquid crystal panel and a touch panel, and Fig. 4 is a perspective view schematically showing a peeling unit.

5 is a perspective view schematically showing the dispensing unit, FIG. 6 is a perspective view schematically showing the multi-nozzle unit, and FIG. 7 is a perspective view schematically showing the pattern forming portion and the adhesive resin application portion of FIG. 2 .

The automatic bonding system 100 between the liquid crystal panel 20 and the touch panel 30 includes a liquid crystal panel supply unit 200 and a touch panel supply unit 300, a liquid crystal panel 20, and a touch panel 30, And each of the regions is formed in an in-line manner through the stages 210, 310, and 410 on which the liquid crystal panel 20 and the touch panel 30 are mounted.

That is, the liquid crystal panel supply unit 200 sequentially includes the first loader unit 201 and the first film peeling unit 202 that provide the liquid crystal panel 20 on the first stage 210, The second film separator 300 includes a second loader section 301 for providing a touch panel 30 on the second stage 310 and a second film peeling section 302, 304 are sequentially positioned.

The bonding portion 400 includes a vacuum bonding portion for bonding the liquid crystal panel 20 and the touch panel 30 supplied from the liquid crystal panel supplying portion 200 and the touch panel supplying portion 300 on the third stage 410 401, an inspection unit 402, a hardening unit 403, and an unloader unit 404 are sequentially positioned.

Here, the liquid crystal panel supply unit 200 is performed in an in-line manner through the first stage 210, and the touch panel supply unit 300 is performed in an in-line manner through the second stage 310.

The bonding portion 400 is formed in an in-line manner through the third stage 410.

Here, the first loader unit 201 and the second loader unit 301 are conventional ones. Each of the first loader unit 201 and the second loader unit 301 includes a plurality of liquid crystal panels 20 or a plurality of touch panels 30, So that they can be sequentially supplied to the first stage 210 or the second stage 310.

That is, the liquid crystal panel 20 is provided on the first stage 210 by the first loader unit 201 by a loading robot (not shown) while being housed in a storage space such as a cassette (not shown) The touch panel 30 is also housed in a storage space such as a cassette (not shown) and provided on the second stage 310 by the second loader section 301 by a loading robot (not shown).

The first and second stages 210 and 310 serve as a table on which the liquid crystal panel 20 and the touch panel 30 are placed and on which the liquid crystal panel 20 and the touch panel 30 are directly seated.

The first and second stages 210 and 310 are formed by a conveyor system that slides the liquid crystal panel 20 and the touch panel 30 respectively. A shaft (not shown) is arranged side by side to form a moving path of the object.

At this time, a plurality of rotating rollers (not shown) having an annular shape are mounted around the plurality of shaft shafts (not shown) which are rotatable so as to maintain constant intervals.

Therefore, the liquid crystal panel 20 and the touch panel 30 are placed on a rotating roller (not shown) mounted on each shaft shaft (not shown), and slide by a rotation of a shaft shaft (not shown) and a rotating roller . Here, the conveyance direction of the object by the conveyor is arbitrarily defined as the x-axis direction.

At this time, a protective film (not shown) is attached to one surface of each of the liquid crystal panel 20 and the touch panel 30 provided on the first and second stages 210 and 310.

The liquid crystal panel 20 and the touch panel 30 are transferred to the first and second film peeling sections 202 and 302 through the first and second stages 210 and 310, And the protective film (not shown) attached to the touch panel 30 are removed.

4, the peeling unit 320 includes a peeling unit 320 and a peeling unit 320. The peeling unit 320 includes a peeling unit 320 and a peeling unit 320. The peeling unit 320 includes a peeling unit 320, (Not shown), which includes a peeling tape supply roll 321 and a take-up roll (not shown) driven by the supply roll 321 and moved to a take-up roll (not shown) And a peeling roller 323 which is in close contact with one edge of a protective film (not shown) of the touch panel 30 and the liquid crystal panel 20 placed on the substrates 210 and 310.

The peeling roller 323 is vertically moved up and down so that a peeling tape (not shown) can be closely contacted with or separated from one edge of a protective film (not shown).

A clamp 325 is provided on one side of the peeling roller 323. The clamp 325 holds the edge of the protective film (not shown) adhered to the peeling roller 323, The protective film (not shown) is completely peeled off from the touch panel 30.

The peeling unit 320 is disposed between the x and y axes of the first and second stages 210 and 310 through a first linear motor (not shown) installed on the first and second stages 210 and 310, Axis.

Therefore, a part of one corner of the protective film (not shown) is adhered through the peeling roller 323, and then one corner thereof is peeled off. Then, one corner of the partially peeled protective film (not shown) is held by the clamp 325 and is moved in the oblique direction of the touch panel 30 or the liquid crystal panel 20 through the first linear motor The protective film (not shown) is peeled from the liquid crystal panel 20 or the touch panel 30 while pulled.

Next, the liquid crystal panel 20 from which the protective film (not shown) has been removed is put on standby on the first stage 210, and the touch panel 30 from which the protective film (not shown) And then transferred to the pattern forming unit 303 through the pattern forming unit 310.

The pattern forming unit 303 is provided with a dispensing unit 330 to form an overflow prevention pattern 337 along the edge of one side of the touch panel 30 from which the protective film (not shown) is removed .

5, the dispensing unit 330 includes a dispenser 331 in which a resin 335 is embedded, and a dispenser 331 is disposed on one side of the dispenser 331 An optical unit 333 for irradiating ultraviolet rays is provided.

In this case, a resin having thermosetting properties may be used. In this case, a steam nozzle for spraying high-temperature steam instead of the optical unit 335 may be used. May be provided on one side of the dispenser 331.

Here, the dispenser 331 uses the same principle as the syringe. That is, the resin 335 in the dispenser 331 is discharged through the nozzle 331a of the dispenser 331 by applying a predetermined pressure to the dispenser 331 filled with the resin 335.

At this time, the resin 335 is discharged along the edge of the touch panel 30 with a predetermined width and thickness. The resin 335 is discharged through the nozzle 331a and is discharged along the edge of the touch panel 30, The ultraviolet rays are irradiated onto the resin 335 discharged on the touch panel 30 through the optical unit 333 provided on one side of the touch panel 331.

Here, the optical unit 333 is made of one selected from UV LED, mercury UV lamp or metal halide lamp, and resin 335 applied along the edge of the touch panel 30 is optically Unit 333 to form an overflow prevention pattern 337 along the edge of the touch panel 30 having a constant thickness and a constant width.

The curing process of the resin 335 by the discharge of the resin 335 by the dispenser 331 and the irradiation of ultraviolet rays proceeds almost simultaneously in the process of moving the dispenser 331 along the edge of the touch panel 30 .

Therefore, it is possible to prevent the phenomenon of collapse before the resin 335 of the liquid type is applied on the touch panel 30 before forming the predetermined thickness and the constant width. Here, the thickness and width of the overflow prevention pattern 337 will be described in detail later.

In addition, the process time for forming the overflow prevention pattern 337 can be shortened, and the efficiency of the process can be improved.

It is preferable that the moving speed of the dispenser 331 and the distance between the dispenser 331 and the optical unit 333 are determined according to the curing speed of the resin 335. That is, the resin 335 has different curing speeds depending on its chemical and physical conditions, and accordingly, the time for irradiating the ultraviolet rays with respect to each resin 335 used must be set to be different from each other.

For example, in the case of the resin 335 requiring a short time for curing, it is preferable to shorten the interval between the dispenser 331 and the optical unit 333 and set the moving speed of the dispenser 331 at a high speed.

On the other hand, in the resin 335 requiring a longer curing time, the moving speed of the dispenser 331 should be set to be slow so that ultraviolet rays can be irradiated for a long time. In this case, it is preferable that the amount of the resin 335 discharged per unit area is constant regardless of the feeding speed of the dispenser 331. The diameter of the nozzle 331a of the dispenser 331 and the diameter of the nozzle 331a, It is possible to satisfactorily satisfy such a condition.

Next, when the overflow prevention pattern 337 is formed on the touch panel 30, the touch panel 30 is transferred to the adhesive resin application unit 304 through the second stage 310.

The adhesive resin application portion 304 is provided with a multi nozzle unit 340 to apply the adhesive resin 341 to the overflow prevention pattern 337 of the touch panel 30. [

Here, the adhesive resin 341 is an optical adhesive resin having photo-curable properties that are cured by ultraviolet rays, and has a high transparency and high elasticity.

The process of applying the adhesive resin 341 on the touch panel 30 through the multi-nozzle unit 340 by the overflow prevention pattern 337 formed along the edge of the touch panel 30, The overflow does not occur to the outside of the touch panel 30.

This can prevent the adhesive resin 341 from overflowing to the outside due to the pressure applied by the cementation even in the process of attaching the touch panel 30 and the liquid crystal panel 20 later.

As a result, it is possible to omit a separate cleaning process for removing the adhesive resin 341 flowing over the outside, thereby improving the efficiency of the process.

6, the multi-nozzle unit 340 includes an adhesive resin storage tank 343, an injection head 345 including a plurality of nozzles (not shown) for discharging the adhesive resin 341 to the outside, .

A reservoir tank 343 filled with the adhesive resin 341 and storing the adhesive resin 341 and an injection head 345 including a nozzle (not shown) for discharging the adhesive resin 341 stored in the reservoir tank 343, The head 345 is connected to the adhesive resin storage tank 343 by a supply pipe (not shown) and more precisely the adhesive resin 341 is connected to the injection head 345 through a supply pipe (not shown) of the adhesive resin storage tank 343. [ (Not shown) in each nozzle.

At this time, the multi-nozzle unit 340 of the present invention ejects the adhesive resin 341 over the entire area of the touch panel 30 while the ejection head 345 scans in one direction, A resin layer can be formed.

That is, the ejection head 345 has a substantially bar shape across the upper portion of the touch panel 30 and has a length corresponding to one edge of the touch panel 30 for applying the adhesive resin 341 More precisely, a length corresponding to the interval between opposing patterns of the overflow prevention pattern 337 formed along the edge of the touch panel 30. [

Thus, after the multi-nozzle unit 340 is positioned on the touch panel 30 on which the overflow prevention pattern 337 is formed along the edge, the ejection head 345 of the multi-nozzle unit 340 is positioned on the touch panel 30 And a predetermined pressure is applied to the adhesive resin storage tank 343 so that the adhesive resin 341 filled in the adhesive resin storage tank 343 flows through the nozzle (not shown) So that the adhesive resin layer is formed on the touch panel 30.

Thus, the efficiency of the adhesive resin application process can be further improved.

Here, the multi-nozzle unit 340 is provided with a control unit (not shown) capable of precisely controlling the amount of the adhesive resin 341 applied thereto, so that the amount and the thickness of the adhesive resin 341 applied on the touch panel 30 The control unit (not shown) adjusts the amount of the adhesive resin 341 applied on the touch panel 30 according to the height of the overflow prevention pattern 337 formed along the edge of the touch panel 30 .

Therefore, the adhesive resin 341 is applied on the touch panel 30 so as to have a predetermined thickness. At this time, the adhesive resin 341 is applied to the height of the overflow prevention pattern 337 formed along the edge of the touch panel 30 To a thickness of about 90 to 95%.

This is to prevent the adhesive resin 341 from flowing to the outside beyond the overflow prevention pattern 337 in the process of attaching the touch panel 30 and the liquid crystal panel 20, which will be performed later.

That is, strong pressure is applied to the touch panel 30 and the liquid crystal panel 20 in order to adhere the touch panel 30 and the liquid crystal panel 20 more tightly. The adhesive resin 341 is formed to have a thickness smaller than the thickness initially applied by pressing.

Therefore, when the adhesive resin 341 is applied so as to have the same height as the height of the overflow prevention pattern 337, the adhesive resin 341 is pressed over the overflow prevention pattern 337 by the pressing of the adhesive resin 341, As shown in FIG.

Therefore, in the present invention, the thickness of the applied adhesive resin 341 corresponds to about 90% to 95% of the height of the overflow prevention pattern 337, so that the touch panel 30 and the liquid crystal panel 20 It is possible to prevent the problem that the adhesive resin 341 flows to the outside beyond the overflow prevention pattern 337 even when a strong pressure is applied to the panel 30 and the liquid crystal panel 20. [

7 is a perspective view showing the pattern forming portion and the adhesive resin application portion in more detail. As shown in the figure, the dispensing unit 330 of the pattern forming portion 303 is a second linear Axis and the z-axis of the second stage 310 through the motors 339a, 339b, 339c, and 339d.

The second linear motors 339a, 339b, 339c, and 339d include first and second linear units 339a and 339b disposed on both sides of the second stage 310, first and second linear units 339a and 339b, And a third linear portion 339c whose both ends are supported by the first and second linear portions 339a and 339b.

The third linear portion 339c is movable along the first and second linear portions 339a and 339b in the y-axis direction defined by the drawing. The fourth linear portion 339d, which is perpendicular to the third linear portion 339c, And the fourth linear portion 339d is movable in the x-axis direction defined by the drawing along the third linear portion 339c.

The dispensing unit 330 is mounted on the fourth linear portion 339d and is movable in the z-axis direction defined in the drawing along the longitudinal direction of the fourth linear portion 339d.

At this time, a laser displacement sensor (not shown) is mounted on the dispensing unit 330 to measure the distance between the dispensing unit 330 and the touch panel 30, and the resin (335 in FIG. 5) It is preferable to discharge it.

On both sides of the dispensing unit 330, CCD cameras 350a and 350b are provided for a vision aligning process to form an overflow prevention pattern (337 in FIG. 6) on the touch panel 30 Before the application of the adhesive resin (341 in Fig. 6) or the position where the overflow prevention pattern (337 in Fig. 6) is formed or overflow prevention pattern (337 in Fig. 6) is formed on the touch panel 30 It is preferable that a fixed amount of adhesive resin (341 in Fig. 6) is applied in the overflow prevention pattern (337 in Fig. 6).

The width and the thickness of the overflow prevention pattern (337 in Fig. 6) formed along the edge of the touch panel 30 are measured through the CCD cameras 350a and 350b, ).

Thus, the multi-nozzle unit 340 applies a predetermined amount of adhesive resin (341 of FIG. 6) to the touch panel 30 to have a predetermined thickness.

The multi-nozzle unit 340 of the adhesive resin application unit 304 is connected to the x-axis, y-axis of the second stage 310 through the third linear motors 349a, 349b, 349c, and 349d provided on the second stage 310 Axis and z-axis.

Here, the third linear motors 349a, 349b, 349c, and 349d include fifth and sixth linear units 349a and 349b provided on both sides of the second stage 310 and fifth and sixth linear units 349a and 349b, And a seventh linear portion 349c whose both ends are supported by the first and second linear portions 349a and 349b.

The seventh linear portion 349c can be moved along the fifth and sixth linear portions 349a and 349b in the y-axis direction defined by the drawing, and the eighth linear portion 349d perpendicular to the seventh linear portion 349c, And the eighth linear portion 349d is movable in the x-axis direction defined by the drawing along the seventh linear portion 349c.

The multi-nozzle unit 340 is mounted on the eighth linear 349d and is movable in the z-axis direction defined in the drawing along the longitudinal direction of the seventh linear 349c.

At this time, a laser displacement sensor (not shown) is also mounted on the multi-nozzle unit 340 to measure the distance between the multi-nozzle unit 340 and the touch panel 30 to measure the adhesive resin (341 in FIG. 6) Is preferably applied.

The touch panel 30 on which the overflow prevention pattern 337 is formed and coated with the adhesive resin 341 and the liquid crystal panel 20 which is on standby on the first stage 210 are bonded to the adhesive 400, The touch panel 30 is seated on the reversing arm 411 from the second stage 310 and is guided to the vacuum attaching portion 401. In this case, (401).

That is, the liquid crystal panel 20 is transferred from the first stage 210 to the third stage 410 of the vacuum attaching unit 401, and the touch panel 30 is rotated 180 degrees by the reversing arm 411 The overflow prevention pattern 337 is formed and one surface of the touch panel 30 to which the adhesive resin 341 is applied corresponds to one surface of the liquid crystal panel 20.

At this time, the reversing arm 411 is provided with an adsorbent (not shown) for adsorbing the back surface of the touch panel 30.

The touch panel 30 is moved from the second stage 310 to the third stage 410 and the liquid crystal panel 20 is rotated by the reversing arm 411 to rotate the touch panel 30, May be positioned so as to correspond to one surface of the liquid crystal panel 20.

Accordingly, after the touch panel 30 and the liquid crystal panel 20 are aligned and aligned, the adhesive resin 341 is interposed between the touch panel 30 and the liquid crystal panel 20.

In this case, it is preferable that the vacuum bonding portion 401 is formed of a chamber (not shown), and a chamber (not shown) may be a vacuum chamber having a gate valve (not shown) It is also possible to use a room temperature process chamber in which a chamber (not shown) is separated vertically.

Such a chamber (not shown) is typically a semiconductor processing chamber, and a detailed description of the configuration is omitted.

The adhesion of the touch panel 30 and the liquid crystal panel 20 is performed in a vacuum atmosphere so that air or foreign matter flows into the adhesive resin 341 between the touch panel 30 and the liquid crystal panel 20 Can be prevented.

Further, by performing the laminating process in a vacuum atmosphere, the process time can be shortened as compared with the laminating process in the atmosphere.

At this time, it is preferable that height adjusting means (not shown) is provided on the reversing arm 411 so that the height of the reversing arm 411 can be adjusted up and down so that the interval between the touch panel 30 and the liquid crystal panel 20 is constant, .

Next, the touch panel 30 and the liquid crystal panel 20 are transferred to the inspection unit 402 through the third stage 410, and the inspection process is performed.

The inspection unit 402 is provided with an optical measuring device 420. The optical measuring device 420 is provided with an adhesive resin 341 between the touch panel 30 and the liquid crystal panel 20 at a high magnification (Not shown) for observing the presence or absence of bubbles or foreign matter, and a CCD camera (not shown) for converting the enlarged image into image data by an optical microscope of a microscope .

The optical measuring device 420 is movable in the x and y axes of the third stage 410 through a fourth linear motor (not shown) installed in the third stage 410.

Therefore, the position of the liquid crystal panel 20 to be inspected and the position of the liquid crystal panel 20 to which the combined touch panel 30 and the lens unit (not shown) and the CCD camera (not shown) of the optical measuring device 420 are placed on the third stage 410 So that it can be inspected.

Meanwhile, a touch panel 30 and a monitor (not shown) for displaying the liquid crystal panel 20, which are inspected through the optical measuring device 420, may be separately configured.

The touch panel 30 and the liquid crystal panel 20 are inspected for the presence of bubbles or foreign matter on the entire surface of the touch panel 30 and the liquid crystal panel 20 bonded together through the inspection unit 402, It is judged whether or not there is a defect, and it is judged whether or not the repair is necessary according to the judgment of the operator, and the next step is determined.

The bonded touch panel 30 and the liquid crystal panel 20 which have been subjected to the defect judgment process through the inspection unit 402 are transferred to the hardening unit 403 to be sandwiched between the touch panel 30 and the liquid crystal panel 20 The curing process of the filled adhesive resin 341 and the complete curing process of the overcooked overflow prevention pattern 337 proceed.

The curing unit 403 is provided with a UV curing unit 430 for irradiating ultraviolet rays. The UV curing unit 430 is made of one selected from UV LED, mercury UV lamp, and metal halide lamp The upper surface of the touch panel 30 and the liquid crystal panel 20 and the side surfaces of the four edges of the touch panel 30 and the liquid crystal panel 20, (341 in Fig. 6) is irradiated with ultraviolet rays through the adhesive resin layer (430).

Thus, the overflow prevention pattern 337 is irradiated with ultraviolet rays through the UV curing device 430 positioned at the four sides of the four sides of the touch panel 30 and the liquid crystal panel 20.

Thus, the curing process of the adhesive resin 341 filled between the touch panel 30 and the liquid crystal panel 20 and the fully curing process of the overcooked overflow prevention pattern 337 proceed.

Here, it is more preferable that the UV curing device 430 uses a UV LED instead of a mercury-ultraviolet lamp and a metal halide lamp because it has the effect of reducing process efficiency and process cost.

Specifically, a mercury-ultraviolet lamp or a metal halide lamp has a life span of 1500 to 2000 hours, which is shorter than a UV LED having a lifetime of 15,000 to 20,000 hrs.

Therefore, if mercury ultraviolet lamps or metal halide lamps are used, it is necessary to frequently replace them. However, since the present invention uses longer UV LEDs than the above lamps, the efficiency of the process can be improved and the process cost can be reduced.

In addition, UV LEDs have less heat generation and lower power consumption than mercury ultraviolet lamps or metal halide lamps, thus improving process efficiency.

This completes the touch panel type liquid crystal display device 10 (see Fig. 8B) in which the touch panel 30 and the liquid crystal panel 20 are bonded together.

The completed touch panel type liquid crystal display device 10 (see FIG. 8B) is transferred to the unloader unit 404 through the third stage 410 and is carried out to the outside.

As described above, the present invention advances the process of bonding the liquid crystal panel 20 and the touch panel 30 through the adhesive resin (341 in Fig. 6) through the automatic bonding system (100 in Fig. 3) It is possible to automate the bonding operation of the touch panel 20 and the touch panel 30 to increase the productivity and to stabilize the attached state uniformly, thereby improving the reliability of the product.

Particularly, according to the present invention, by forming the overflow prevention pattern (337 in Fig. 6), it is possible to prevent the overflow of the adhesive resin (341 in Fig. 6) applied for attachment of the touch panel 30 and the liquid crystal panel 20 Therefore, a separate cleaning step for removing the adhesive resin (341 in Fig. 6) overflowing to the outside can be omitted, and the efficiency of the process can be further improved.

At this time, in the process of forming the overflow prevention pattern (337 in Fig. 6), the resin (335 in Fig. 5) is coated through the dispenser (331 in Fig. 5) , The overflow prevention pattern (337 in Fig. 6) can be made to have a certain thickness and a constant width, the process time for forming the overflow prevention pattern (337 in Fig. 6) can be shortened, and the efficiency of the process can be improved .

Further, the adhesive resin (341 in Fig. 6) can be applied at one time while scanning and moving through the multi-nozzle unit (340 in Fig. 6), thereby improving the efficiency of the adhesive resin application step, The amount of resin (341 in Fig. 6) can be precisely controlled, and the efficiency of the process can be improved.

The adhesive resin 341 between the touch panel 30 and the liquid crystal panel 20 can be used to move air or foreign matter Can be prevented.

Further, by curing the overflow prevention pattern (337 in FIG. 6) and the adhesive resin 341 via the UV LED, the efficiency of the process is improved compared with the use of a mercury UV lamp or a metal halide lamp And the process cost can be reduced.

Further, deterioration of image quality can be prevented, and the internal strength against external impact or pressure can be improved.

8A is a cross-sectional view schematically showing the overflow prevention pattern and the applied adhesive resin formed on the touch panel, and FIG. 8B is a cross-sectional view schematically showing a state in which the liquid crystal panel 20 and the touch panel are bonded.

As shown in the figure, an overflow prevention pattern 337 is formed along the edge of one surface of the touch panel 30, and an optical adhesive resin 341 is coated in the overflow prevention pattern 337.

At this time, it is preferable that the overflow prevention pattern 337 is formed on the print pattern 35 formed along the edge of the touch panel 30.

That is, a black resin is printed on one surface of the touch panel 30 to shield a non-display area of the liquid crystal panel 20 attached to the touch panel 30 from which an image is not displayed, The overflow prevention pattern 337 is located above the print pattern 35 so that the overflow prevention pattern 337 does not affect the display area where the image is displayed.

The overflow prevention pattern 337 is preferably formed to have a width s1 of 1000 mu m +/- 10% and a height d1 of 200 mu m +/- 50 mu m. The height d2 of the optical adhesive resin 341 applied on the touch panel 30 is about 90 times the height d1 from the touch panel 30 of the overflow prevention pattern 337 formed on the touch panel 30 To 95%.

At this time, the width s2 of the print pattern 35 is about 10% larger than the width s1 of the overflow prevention pattern 337, thereby preventing the overflow prevention pattern 337 from being exposed to the outside desirable.

Here, when the width s1 of the overflow prevention pattern 337 is 1000 占 퐉 -10% or less, the strength is lowered, and the strength is lowered due to the pressure applied during the process of attaching the touch panel 30 and the liquid crystal panel 20 The overflow prevention pattern 337 may be collapsed. When the width s1 of the overflow prevention pattern 337 is 1000 mu m + 10% or more, it becomes difficult to realize a narrow bezel that is recently required as the non-display area becomes wider.

Further, since the time for hardening the overflow prevention pattern 337 becomes longer, the efficiency of the process is lowered.

The overflow prevention pattern 337 may have a collapse phenomenon even when the height d1 of the overflow prevention pattern 337 is 200 占 퐉 to 50 占 퐉 or less and the height d1 of the overflow prevention pattern 337 is about The thickness of the optical adhesive resin 341 formed to have a height d2 corresponding to 90 to 95% may become too thin and it may be difficult to firmly bond the liquid crystal panel 20 and the touch panel 30 to each other.

If the height d1 of the overflow prevention pattern 337 is 200 mu m + 50 mu m or more, the thickness of the touch panel 30 and the liquid crystal panel 20 may increase.

The thickness d2 of the optical adhesive resin 341 applied to the overflow prevention pattern 337 is about 90 to 95% It is possible to prevent the optical adhesive resin 341 from flowing to the outside beyond the overflow prevention pattern 337 in the process of attaching the resin 20 to the overflow prevention pattern 337. [

8B, the height d3 of the overflow prevention pattern 337 of the touch panel type liquid crystal display device 10, to which the touch panel 30 and the liquid crystal panel 20 are attached, it is preferable that the touch panel 30 and the liquid crystal panel 20 are bonded together with the touch panel 30 in order to more firmly adhere the touch panel 30 and the liquid crystal panel 20 in the process of attaching the touch panel 30 and the liquid crystal panel 20. [ ) And the liquid crystal panel 20 with a strong pressure.

Therefore, when the thickness of the optical adhesive resin 341 to be applied is the same as the height d1 of the overflow prevention pattern 337, the optical adhesive resin 341 flows to the outside beyond the overflow prevention pattern 337 A problem will arise.

It is preferable that the overflow prevention pattern 337 formed along the edge of the touch panel 30 is made of the same material as the optical adhesive resin 341. This is because the optical adhesive resin 341 applied to the touch panel 30, And the overflow prevention pattern 337 are made of different materials, the adhesion may not be good and a gap may be generated.

The overflow prevention pattern 337 is formed on one surface of the touch panel 30 and the adhesive resin 341 is applied as an example. However, the overflow prevention pattern 337 and the adhesive resin 341 May be formed on one surface of the liquid crystal panel 20 and coated.

However, when the overflow prevention pattern 337 is formed on the liquid crystal panel 20 and the adhesive resin 341 is applied to the liquid crystal panel 20, the process of forming the overflow prevention pattern 337 or the process of applying the adhesive resin 341 The liquid crystal panel 20 has a complicated forming process and a high manufacturing cost as compared with the touch panel 30 so that the liquid crystal panel 20 is formed on the touch panel 30 It is preferable to form the overflow prevention pattern 337 and apply the adhesive resin 341.

In addition to the process of attaching the touch panel 30 and the liquid crystal panel 20, the present invention may also include a protective window (not shown) that performs a function of a window for protecting against an external impact, The process of attaching the window (not shown) and the liquid crystal panel 20 may be performed through the automatic bonding system (100 in Fig. 3) of the present invention.

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

20: liquid crystal panel, 30: touch panel, 100: automatic bonding system
200: liquid crystal panel supply unit, 201: first loader unit, 202: first film peeling unit
The first and second stages are separated from each other in a direction perpendicular to the first and second stages.
320: peeling unit, 330: dispensing unit, 340: multi-nozzle unit
400: adhering part, 401: vacuum adhering part, 402: inspection part, 403: hardening part, 404:
411: inverting arm, 420: optical measuring device, 430: UV curing machine

Claims (18)

A first substrate supply unit for supplying the first substrate with the first loader unit and the first film peeling unit in an in-line manner through the first stage;
A second substrate supply unit for supplying the second substrate to the second loader unit, the second film peeling unit, the pattern forming unit, and the adhesive resin application unit via the second stage in an inline manner;
Wherein the first and second substrates are simultaneously supplied in an in-line manner through a third stage connected in in-line manner with the first and second stages;
An inspecting portion and an inspecting portion which are connected to the cementing portion in an in-
Wherein the adhesive resin applied on the second substrate through the adhesive resin application portion is formed to have a thickness corresponding to 90 to 95% of the height of the overflow prevention pattern located along the edge of the second substrate through the pattern formation portion Lt; / RTI >
Wherein the first film peeling unit removes the protective film attached on the first substrate and the second film peeling unit removes the protective film attached on the second substrate.
The method according to claim 1,
Wherein a pattern for blocking light is provided along an edge of the second substrate, and the overflow prevention pattern is positioned above the print pattern.
The method according to claim 1,
Wherein the overflow prevention pattern has a width of 1000 mu m +/- 10% and a height of 200 mu m +/- 50 mu m.
The method according to claim 1,
Wherein the overflow prevention pattern and the adhesive resin are the same material having photo-curable properties.
a) supplying a first substrate through a first stage and supplying a second substrate through a second stage;
b) removing the protective film attached to one surface of each of the first substrate and the second substrate through the first and second film peeling portions;
c) transferring the second substrate to the pattern forming section through the second stage;
d) applying a resin along the edges of the second substrate through the pattern forming portion and tapering the resin to form an overflow prevention pattern;
e) transferring the second substrate, on which the overflow prevention pattern is formed, to an adhesive resin application section, and applying an adhesive resin in the overflow prevention pattern in a scan manner;
f) feeding the first and second substrates, which are located on the first stage and the second stage, to the third stage at the same time, and transferring the first substrate and the second substrate to the vacuum lacquer, Rotating it by a reversing arm and transferring it to an upper portion of the other substrate;
g) bonding the first and second substrates through the adhesive resin;
h) transferring the assembled first and second substrates to an inspection unit and inspecting them;
i) transferring the bonded first and second substrates to a curing unit to cure the overflow prevention pattern and the adhesive resin using a UV curing unit
/ RTI >
The steps a), b), c), d), e), f), g), h) and i)
In the step b), the first and second film peeling units may include a peeling unit including a peeling tape supply roll, a winding roll, a peeling roller, and a clamp, (1) and the second substrate (2) in a diagonal direction.
delete 6. The method of claim 5,
In the step d), the pattern forming unit may include a dispensing unit including a dispenser and an optical unit, and may be configured to apply the resin while irradiating ultraviolet rays through the optical unit A bonding method using an automatic bonding system for a liquid crystal display.
[8] has been abandoned due to the registration fee. 8. The method of claim 7,
Wherein the optical unit is a selected one of a UV LED, a mercury UV lamp, and a metal halide lamp.
8. The method of claim 7,
Wherein the dispensing unit includes a laser displacement sensor, and measures an interval between the dispensing unit and the second substrate using an automatic bonding system for a liquid crystal display.
6. The method of claim 5,
In the step e), the adhesive resin application unit is provided with a multi-nozzle unit including a storage tank and an injection head including a plurality of nozzles, And an adhesive bonding method using an automatic bonding system for a liquid crystal display device that is formed in a bar shape so that the injection head scans in one direction and applies the adhesive resin over the entire area of the second substrate Way.
11. The method of claim 10,
Wherein the multi-nozzle unit includes a control unit capable of controlling the amount of the adhesive resin so that the adhesive resin is applied to the height of the overflow prevention pattern so as to have a thickness corresponding to 90 to 95% .
11. The method of claim 10,
Wherein the multi-nozzle unit includes a laser displacement sensor, and measures an interval between the multi-nozzle unit and the second substrate.
6. The method of claim 5,
A vision alignment process may be performed between the step c) and the step d) or between the step d) and the step e) to confirm the position where the overflow prevention pattern is to be formed or the overflow prevention pattern And confirming the formed position, width, and thickness of the liquid crystal display device.
6. The method of claim 5,
Wherein the bonding of the first and second substrates proceeds in an atmosphere of vacuum in the step (f) using an automatic bonding system for a liquid crystal display.
6. The method of claim 5,
The method of claim 1, wherein in the step (f), the reversing arm includes a height adjusting means, and the first and second substrates are press-fitted to each other so that the gap between the first and second substrates is constant.
6. The method of claim 5,
The method according to any one of claims 1 to 5, wherein in the step (h), the presence or absence of bubbles or foreign matter is inspected through the inspection unit.
6. The method of claim 5,
Wherein the UV curing device in step i) is located on the tops of the first and second substrates and on the sides of the first and second substrates.
[Claim 18 is abandoned upon payment of registration fee.] 18. The method of claim 17,
Wherein the UV curing apparatus is one selected from the group consisting of a UV LED, a mercury UV lamp, and a metal halide lamp.

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