TWI472963B - Touch panel display device - Google Patents

Description

Touch display device

The present invention relates to a touch display device, and more particularly to a method for attaching a touch panel to a display panel.

With the rapid development of science and technology, touch screen products as the simplest, convenient and natural human-machine dialogue mode, it gives multimedia a new look, is a very attractive new multimedia interactive device.

At present, the bonding process of the touch panel is to apply a water-repellent glue to the upper and lower surfaces of the plastic frame to bond the touch panel and the display panel, but the water gel is overflowed under strict environmental testing. . Therefore, under high-quality and environmental resistance testing, touch panels have adopted double-sided adhesives with high viscosity as the bonding interface between the touch panel and the display panel.

Please refer to Figure 1 for the method of using double-sided tape as the bonding interface between the touch panel and the display panel disclosed by AU Optronics Co., Ltd. in the specification of CN101183285. The top view of the touch display panel is shown in FIG. Four base tapes 150 are disposed on four sides of the display panel 170. A first end 150a of each base tape 150 protrudes from the display panel 170, and a second end 150b is adjacent to another base tape. 150 contacts. The edge range of the touch panel 130 may be larger, smaller, or equal to the edge range of the display panel 170, depending on design requirements. Please refer to FIG. 2 at the same time. FIG. 2 is a side view of the touch display panel. The base tape 150 includes a base. The first adhesive layer and the second adhesive layer 152 are respectively disposed on the opposite surfaces of the substrate, respectively bonding the touch panel and the display panel.

The bonding method of the touch panel and the display panel requires four bit steps, and the four base tapes are easy to overlap or sew in the joint area, which affects the bonding quality. On the other hand, since the distance between the touch panel and the display panel is only one layer of tape, the signals between the touch panel and the display panel easily interfere with each other.

In order to solve the above problems, reduce the number of alignments, and improve the bonding quality, the present invention provides a new bonding structure, and the invention can further reduce static electricity generated during the bonding process of the touch panel or the display panel.

The touch-sensitive liquid crystal display bonding device comprises: a plastic frame disposed between the display panel and the touch panel; a resin bonding film is located on the upper and lower surfaces of the plastic frame; wherein the resin bonding film comprises a resin The film layer and a bonding glue are disposed on the resin film layer and disposed along the boundary of the resin film layer, and the bonding glue is located between the resin film layer in the resin bonding film and the plastic frame.

In an embodiment of the invention, the resin film layer in the resin bonding film needs to be removed when the touch panel and the display panel are bonded together.

In an embodiment of the invention, the adhesive in the resin bonding film is a conductive adhesive.

In still another embodiment of the present invention, the adhesive in the resin-bonded film contains conductive metal particles.

In still another embodiment of the present invention, the adhesive in the resin bonding film contains Conductive metal pattern.

In an embodiment of the invention, the adhesive in the resin-bonding film is arranged in a "mouth" shape.

In an embodiment of the invention, the adhesive in the resin bonding film is provided in a zigzag type.

In still another embodiment of the present invention, the adhesive in the resin bonding film is arranged in a dotted line shape.

In an embodiment of the invention, the adhesive in the resin bonding film is a plurality of linear structures.

The invention also provides a method for bonding a touch panel and a display panel. First, a resin bonding film is prepared. The resin bonding film comprises a resin film layer and a bonding glue, wherein a surface of one of the resin film layers is surrounded. The adhesive film is attached to the two surfaces of a plastic frame, wherein the adhesive film of the resin bonding film is located between the plastic frame and the resin film layer; a resin film layer on a surface of the plastic frame, the adhesive film is exposed on the surface of the plastic frame; a display panel is placed on the surface of the plastic frame and adhered; a resin film layer on the other surface of the plastic frame, the adhesive film is exposed on the other surface of the plastic frame; a touch panel is placed on the adhesive film on the other surface of the plastic frame and pasted Hehe.

The present invention also provides another method for bonding a touch panel and a display panel: preparing a resin bonding film, the resin bonding film comprising a resin film layer and a bonding glue, wherein a surface of one of the resin film layers is surrounded The adhesive film is attached to the two surfaces of a plastic frame, wherein the adhesive film of the resin bonding film is located between the plastic frame and the resin film layer; a resin film layer on both surfaces of the plastic frame The bonding glue is exposed on the two surfaces of the plastic frame; a display panel is placed on the bonding glue on one surface of the plastic frame and is attached; and a touch panel is placed on the other side of the plastic frame The surface of the adhesive is applied to the adhesive.

In the present invention, since the distance between the touch panel and the display panel is a rubber frame and the thickness of the two layers of tape is much larger than the distance of only one layer of the tape in the prior art, the touch panel can be effectively reduced. The signal interference between the display panels.

The above described features and advantages of the present invention will be more apparent from the following description.

12‧‧‧ resin film

14‧‧‧Finishing glue

16‧‧‧ plastic frame

20‧‧‧Resin film

60‧‧‧Electrical mat

145, 146‧‧‧ conductive adhesive

1451, 1461‧‧‧ conductive particles

130, 200‧‧‧ touch panel

170,400‧‧‧ display panel

150‧‧‧Foundation tape

150a‧‧‧ first end of the base tape 150

150b‧‧‧ second end of the base tape 150

151‧‧‧First adhesive layer

152‧‧‧Second Adhesive Layer

155‧‧‧Substrate

FIG. 1 is a top view of a conventional touch display panel.

FIG. 2 is a side view of a conventional touch display panel.

Fig. 3 is a plan view showing the touch liquid crystal display bonding device of the present invention.

Fig. 4 is a cross-sectional view taken along line A-A' in Fig. 3.

Fig. 5 is a plan view showing a resin-bonded film according to the first embodiment of the present invention.

Fig. 6 is a plan view showing a resin bonded film of the second embodiment of the present invention.

Fig. 7 is a plan view showing a resin bonded film of the third embodiment of the present invention.

Fig. 8 is a plan view showing a resin-bonded film of Example 4 of the present invention.

Fig. 9 is a plan view showing a resin-bonded film of Example 5 of the present invention.

Figure 10 is a top plan view of the plastic frame used for the conductive adhesive.

11 is a schematic view of a touch panel and a display panel bonding method of the present invention.

The invention will now be described in detail in conjunction with the drawings and embodiments.

Fig. 3 is a plan view of the touch liquid crystal display bonding apparatus of the present invention. Please refer to Fig. 4 at the same time, and Fig. 4 is a cross-sectional view taken along line A-A' in Fig. 3. Referring to FIG. 4, the touch-sensitive liquid crystal display bonding device includes a plastic frame 16 and a resin bonding film 20, wherein the upper and lower surfaces of the plastic frame 16 are provided with a resin bonding film 20, but the resin is bonded. The film 20 is composed of a resin film layer 12 and a bonding glue 14 which is disposed on the resin film layer 12, and the resin bonding film 20 is adhered by the resin film layer 12. The glue 14 is attached to the upper and lower surfaces of the plastic frame 16 such that the touch liquid crystal display bonding device is sequentially a resin film layer 12, a bonding glue 14, a plastic frame 16, a bonding glue 14, and a resin film layer 12. The combination of the touch panel 14 and the display panel can be easily removed by the combination of the resin film layer 12, so that the plastic frame 16 can be easily attached to the touch panel and the display panel. Reduce the fit time and increase productivity. As is apparent from Fig. 3, the bonding paste 14 in the resin bonding film 20 is provided along the boundary of the resin film layer 16, and the bonding paste 14 has a "mouth" shape. More specifically, the configuration of the bonding glue 14 in the resin bonding film 20 is set according to the shape of the plastic frame 16 and correspondingly with an equal or small width, so that when the resin bonding film 20 is attached to the plastic frame 16 The adhesive glue 14 can be placed on the frame of the plastic frame 16 without leaking. The plastic frame 16 is disposed only in the non-display area of the display panel and the non-touch area of the touch panel. Therefore, the area of the adhesive film 14 on the resin film layer 12 disposed on the resin film layer 12 is different from that of the display panel. The display area and the non-touch area of the touch panel coincide.

Fig. 5 is a plan view showing a resin bonding film in a touch type liquid crystal display bonding apparatus according to an embodiment of the present invention. In the present embodiment, the bonding glue 14 is the same as the above, and the bonding glue 14 is arranged in a zigzag manner along the boundary of the resin film layer 12. The zigzag type arrangement increases the area of the bonding glue, and the glue can be made. The frame 16 is more stable with the touch panel and the display panel. Macroscopically, the zigzag-type adhesive 14 is also "mouth" shaped. In fact, the adhesive 14 is disposed according to the shape of the plastic frame 16 and correspondingly disposed with an equal or smaller width, so that the adhesive film 14 can be located on the plastic frame 16 when the resin bonding film 20 is attached to the plastic frame 16. The border does not leak. The plastic frame 16 is disposed only in the non-display area of the display panel and the non-touch area of the touch panel. Therefore, the area of the adhesive film 14 on the resin film layer 12 disposed on the resin film layer 12 is different from that of the display panel. The display area and the non-touch area of the touch panel coincide.

Fig. 6 is a plan view showing a resin bonding film in the touch liquid crystal display bonding apparatus according to the second embodiment of the present invention. In the present embodiment, the bonding glue 14 is the same as the above, the bonding glue 14 is arranged in a dashed line along the boundary of the resin film layer 12, and the bonding glue 14 can be divided into two rows, the bonding glue 14 It can also be arranged in one or more rows, and the two layers of the bonding glue 14 in the inner and outer rows are arranged in a wrong position and correspondingly, and of course, they can be arbitrarily distributed as long as they can be attached to the plastic frame without leaking. The dotted type adhesive 14 makes the bonding more stable, and the dotted-type adhesive 14 is also macroscopically "mouth". In fact, the adhesive 14 is disposed according to the shape of the plastic frame 16 and correspondingly disposed with an equal or smaller width, so that the adhesive glue 14 can be located in the plastic frame 16 when the resin bonding film 20 is attached to the plastic frame 16 . The border does not leak. The plastic frame 16 is disposed only on the non-display area of the display panel and the non-touch area of the touch panel. Therefore, the adhesive layer 14 on the resin film layer 12 is disposed on the resin film layer 12, which is the same as the display panel. The non-display area and the non-touch area of the touch panel coincide.

Fig. 7 is a plan view showing a resin bonding film in the touch liquid crystal display bonding apparatus according to the third embodiment of the present invention. In the present embodiment, the bonding glue 14 is the same as the above, and the bonding glue 14 is formed by connecting eight linear structures along the boundary on the resin film layer 12. As shown, the bonding glue 14 is 2 Four square right angle box type settings, of course, its linear knot The number of structures can be changed to single or multi-line depending on actual needs, or not connected to each other at the end of the linear structure. Macroscopically, the square-shaped adhesive 14 is also "mouth" shaped. In fact, the adhesive 14 is disposed according to the shape of the plastic frame 16 and correspondingly disposed with an equal or smaller width, so that the adhesive glue 14 can be located in the plastic frame 16 when the resin bonding film 20 is attached to the plastic frame 16 . The border does not leak. The plastic frame 16 is disposed only in the non-display area of the display panel and the non-touch area of the touch panel. Therefore, the area of the adhesive film 14 on the resin film layer 12 disposed on the resin film layer 12 is different from that of the display panel. The display area and the non-touch area of the touch panel coincide. The frame glue of the above various embodiments can improve the bonding effect of the touch panel and the display panel by increasing the area of the bonding glue while considering the manufacturing cost.

Fig. 8 is a plan view showing a resin-bonded film of Example 4 of the present invention. In the present embodiment, the bonding glue is the same as the above, and the bonding glue is disposed along the boundary on the resin film layer 12 and has a "mouth" shape. The resin bonding film 20 is different from the first three embodiments. The conductive adhesive is a conductive adhesive 145, wherein the conductive adhesive 145 on the resin film layer 12 contains conductive particles 1451. The conductive particles 1451 are spherical particles or short fibers coated with a conductive material. It may be copper or tin, etc., and the conductive particles 1451 are directly mixed into the bonding glue to be arranged in a non-discipline manner. The conductive bonding adhesive 145 is disposed according to the shape of the plastic frame 16 and is equal or The small width is correspondingly disposed, so that when the resin bonding film 20 is attached to the plastic frame 16, the conductive adhesive 145 can be located on the frame of the plastic frame 16 without leaking. The plastic frame 16 is disposed only on the non-display area of the display panel and the non-touch area of the touch panel. Therefore, the area of the conductive adhesive layer 145 on the resin film layer 12 disposed on the resin film layer 12 is the same as the display panel. The non-display area and the non-touch area of the touch panel coincide.

Fig. 9 is a plan view showing a resin-bonded film of Example 5 of the present invention. In this embodiment The bonding glue is the same as the above, and the bonding glue is disposed along the boundary on the resin film layer 12 and has a "mouth" shape. Unlike the first three embodiments, the bonding glue in the resin bonding film 20 is the same. The conductive adhesive 146 is a conductive adhesive 146. The conductive adhesive 146 on the resin film layer 12 contains conductive particles 1461. The conductive particles 1461 are spherical particles or short fibers coated with a conductive material, which may be copper or tin. And the conductive particles 1461 are arranged in a regular manner by using the grooves or the like. The conductive adhesive 146 is disposed according to the shape of the plastic frame 16 and is disposed correspondingly with an equal or smaller width, so that the conductive adhesive 145 can be located when the resin laminated film 20 is attached to the plastic frame 16. The frame of the plastic frame 16 is not leaked. The plastic frame 16 is disposed only on the non-display area of the display panel and the non-touch area of the touch panel. Therefore, the conductive adhesive layer 145 on the resin film layer 12 is disposed on the resin film layer 12, and is displayed. The non-display area of the panel and the non-touch area of the touch panel coincide.

Fig. 10 is a plan view showing a plastic frame used for a resin bonding film in which a conductive adhesive is a bonding adhesive. The plastic frame used in this embodiment is different in that the plastic frame 16 is provided with a conductive pad 60, which can be at any position of the plastic frame 16. The material of the conductive pad 60 is a conductive material such as copper or tin. When the plastic film 16 is bonded to the resin-bonding film 20 containing the conductive adhesive, the conductive particles or the conductive pattern in the conductive adhesive may be The conductive pad 60 is electrically connected to the conductive pad 60. In the process of bonding the touch panel or the display panel, the plastic frame 16 is clamped by the clamp, and the conductive pad 60 on the plastic frame is connected to the clamp (not shown). The static electricity in the bonding process can be derived by using a fixture and grounding the wire on the fixture.

The method for bonding the touch panel to the display panel using the touch-type liquid crystal display bonding device is described below. Referring to FIG. 11, FIG. 11 is a schematic diagram of the touch panel and the display panel bonding method of the present invention. First prepare a touch-type liquid crystal display bonding device 10, which comprises a resin bonding film 20 and a plastic frame 16, wherein the resin bonding film 20 comprises a resin film layer 12 and a bonding glue 14, wherein the two surfaces of the plastic frame 16 respectively adhere to the resin The adhesive film 14 is placed between the plastic frame 16 and the resin film layer 12; then the resin film layer 12 on the lower surface of the plastic frame 16 is removed, and the adhesive 14 is exposed to the glue. a lower surface of the frame 16; a display panel 400 is placed on the lower surface of the plastic frame 16 and adhered to the plastic frame 16 by the adhesive 14; and the above surface is removed, and the other surface of the plastic frame is removed. The resin film layer 14 is exposed on the upper surface of the plastic frame 16; a touch panel 200 is placed on the upper surface of the plastic frame 16 and the adhesive frame 14 and the plastic frame are 16 phase fit.

Of course, another manner of bonding can be used in the following manner. First, a touch-type liquid crystal display bonding device 10 is prepared, which includes a resin bonding film 20 and a plastic frame 16, wherein the resin bonding film 20 includes a a resin film layer 12 and a bonding glue 14, wherein the two surfaces of the plastic frame 16 are respectively attached to the resin bonding film 20, so that the bonding glue 14 is located between the plastic frame 16 and the resin film layer 12; Then, the resin film layer 12 on both surfaces of the plastic frame 16 is simultaneously removed, so that the bonding glue is simultaneously exposed on both surfaces of the plastic frame 16; then a display panel 400 and a touch panel 200 are respectively placed in the The upper and lower surfaces of the plastic frame 16 are adhered to the plastic frame 16 by the adhesive 14 . It should be noted that the above-mentioned adhesive can be any of the adhesive or conductive adhesive described in the above embodiments and combinations thereof.

In the above-described embodiments, the present invention has been exemplarily described, and various modifications of the present invention may be made without departing from the spirit and scope of the invention.

12‧‧‧ resin film

14‧‧‧Finishing glue

16‧‧‧ plastic frame

20‧‧‧Resin film

Claims (14)

A bonding device for a touch-sensitive liquid crystal display, comprising: a plastic frame disposed between the display panel and the touch panel; a resin bonding film disposed on the upper and lower surfaces of the plastic frame, the resin bonding film The invention comprises: a resin film layer; and a bonding glue, wherein the bonding glue is disposed on the resin film layer and disposed along a boundary of the resin bonding film, and the bonding glue is located in the resin bonding film The resin film layer is between the plastic frame. The touch-sensitive liquid crystal display bonding device according to claim 1, wherein the resin film layer and the bonding adhesive are detachably attached. The touch-type liquid crystal display bonding device according to claim 1, wherein the adhesive is a conductive adhesive. The touch-sensitive liquid crystal display bonding device according to claim 3, wherein the conductive paste contains conductive metal particles. The touch liquid crystal display bonding device of claim 3, wherein the conductive adhesive has a conductive metal pattern. The touch-type liquid crystal display bonding device according to claim 1, wherein the bonding glue is disposed in a "mouth" type. The touch liquid crystal display bonding device according to claim 1, wherein the bonding glue is in a zigzag type. The touch-type liquid crystal display bonding device according to claim 1, wherein the bonding glue is arranged in a dotted line shape. The touch-type liquid crystal display bonding device according to claim 1, wherein the bonding glue is a plurality of linear structures. The touch-sensitive liquid crystal display bonding device of claim 1, wherein a conductive pad is further disposed on the plastic frame. The touch-sensitive liquid crystal display bonding device of claim 10, wherein the conductive adhesive comprises conductive metal particles, and the conductive metal particles are connected to the conductive pad on the plastic frame. The touch-sensitive liquid crystal display bonding device of claim 10, wherein the conductive adhesive has a conductive metal pattern, and the conductive metal pattern is connected to the conductive pad on the plastic frame. A method for bonding a touch panel and a display panel, comprising: preparing a resin bonding film, the resin bonding film comprising a resin film layer and a bonding glue, wherein a surface of one of the resin film layers has a sticker The adhesive film is adhered to the two surfaces of a plastic frame, wherein the adhesive film of the resin bonding film is located between the plastic frame and the resin film layer; a resin film layer, the adhesive film is exposed on the surface of the plastic frame; a display panel is placed on the surface of the plastic frame and adhered; and the other surface of the plastic frame is removed The resin film layer is exposed on the other surface of the plastic frame; a touch panel is placed on the adhesive film on the other surface of the plastic frame and is attached. A method for bonding a touch panel and a display panel, comprising: preparing a resin film bonding film, the resin bonding film comprising a resin film layer and a bonding glue, wherein a surface of one of the resin film layers has a periphery Laminating glue; the resin bonding film is respectively adhered to the two surfaces of a plastic frame, wherein the adhesive film of the resin film layer is located between the plastic frame and the resin film layer; and both surfaces of the plastic frame are removed a resin film layer, the adhesive film is exposed on the two surfaces of the plastic frame; a display panel is placed on the surface of the plastic frame and adhered; and a touch panel is placed Applying to the adhesive on the other surface of the plastic frame.