TWI518570B - Processing method of touch panel , touch panel structure and touch device thereof - Google Patents

Description

Touch panel manufacturing method, touch panel structure and touch device thereof

The present invention relates to a touch panel structure and a manufacturing method, and more particularly to a method for manufacturing a touch panel capable of reducing the chance of the etching solution being eroded to the sensing layer, a touch panel structure, and a touch device thereof.

One Glass Solution (OGS) touch panel refers to a black matrix (BM) photoresist coated on a glass to make a decorative pattern, followed by a layer of indium tin oxide (Indium Tin). Oxide, ITO) film and processing a special purposeful pattern, creating a purposeful electric field characteristic on the surface, using the method of sensing the weak current of the human body to achieve the purpose of touch, which reduces the original protective glass and The sensor glass is attached to the process, which reduces the cost.

Please refer to FIG. 1A, which is a partial structural diagram of the first embodiment of the current touch panel in the manufacturing process. As shown in the figure, the structure 1 of the touch panel in the process stage basically comprises a substrate 11, a decorative layer 12, an electrode layer 13, and a protective layer 14. The decorative layer 12 often makes an edge design (the blank area 111 in the figure) that is a certain distance from the finished product. This is because the touch panel often has cutting requirements, so the blank area 111 is left.

Please refer to the first B diagram, which is a partial structural diagram of the second embodiment of the current touch panel in the manufacturing process. As shown, the touch panel further includes a barrier film 15 during the processing stage. In general, in the process of secondary strengthening, the principle of the substrate is to use hydrofluoric acid (Hydrofluoric acid, HF) and other mixed liquids, the original sharp spiked micro-crack on the glass cut surface becomes a gentle large bump, which raises the average strength of the glass; in the secondary strengthening process, the strengthening liquid 16 only cuts the glass The cross-section acts, and the barrier film 15 is removed after completion. In this prior art, the adhesion of the barrier film 15 is improved, the adhesion of the adhesive is used to overcome the gap, and the strengthening liquid is prevented from eroding the black matrix photoresist 12; however, in this way, the barrier film is removed after the process is completed. At 1500, the indium tin oxide electrode 13 or the protective layer 14 on the substrate 11 is easily torn together, causing an abnormality in appearance or electrical properties.

Please refer to the first C diagram, which is a partial structural diagram of a third embodiment of the current touch panel in the manufacturing process. As shown, in this prior art, the blank area 111 is enlarged to increase the conformability of the barrier film 15, but this design allows the user to clearly see the blank area 111 of the edge and an excessive blank area. It also affects the area of use of the substrate and increases the material cost. .

Please refer to the first D figure, which is a partial structural diagram of the fourth embodiment of the current touch panel in the manufacturing process. As shown in the figure, in this prior art, the coverage area of the protective layer 14 is increased, so that more protective layers 14 are protected as the black matrix photoresist 12, but this design cannot estimate the protection of the reinforcing liquid 16 pairs. The degree of damage of the layer 14 may also tear off the black matrix photoresist 12 under the protective layer 14 when the barrier film 15 is removed, resulting in an abnormal appearance.

Therefore, how to overcome the above problems is a subject worthy of further study, so an ideal touch panel manufacturing method, a touch panel structure and a touch device thereof are designed to effectively reduce the erosion of the strengthening liquid to the black matrix photoresist. Opportunity has become an urgent issue in the application of the market.

In view of the above problems, the object of the present invention is to provide a touch panel manufacturing method, a touch panel structure and a touch device thereof, so as to solve the current single-chip glass touch panel in the secondary strengthening process. The sensing layer is susceptible to the problem of secondary strengthening fluid erosion.

According to the purpose of the present invention, a process side of a touch panel is proposed The method includes: providing a substrate; disposing a sensing layer and a barrier layer on a surface of the substrate, and having a spacing between the sensing layer and the barrier layer; and providing a first barrier a film on the other surface of the substrate, and a second barrier film on the other side of the sensing layer and the barrier layer; performing a strengthening substrate process; and removing the first barrier film and the first Second barrier diaphragm.

According to the purpose of the present invention, a touch panel structure is further provided, which is suitable for a process of reinforcing a substrate, wherein the process of strengthening the substrate comprises: disposing a first barrier film and a second barrier film under the touch panel structure After the process of the process of the reinforced substrate, the first barrier film and the second barrier film are removed. The touch panel structure comprises: a substrate, a sensing layer and a barrier layer. The sensing layer is disposed on a surface of the substrate. The barrier layer is disposed on the surface of the substrate, and is used in the process of strengthening the substrate, and is connected to the barrier film and has a spacing from the sensing layer.

According to another aspect of the present invention, a touch device includes a touch panel structure, which is suitable for a process of reinforcing a substrate, wherein the process of strengthening the substrate comprises: providing a first barrier film and a second barrier film The first two upper surfaces of the touch panel structure are removed, and the first barrier film and the second barrier film are removed after the process of the reinforced substrate, the touch panel structure comprises: a substrate and a sensing layer And a barrier layer. The sensing layer is disposed on a surface of the substrate. The barrier layer is disposed on the surface of the substrate, and is used in the process of strengthening the substrate, and is connected to the barrier film and has a spacing from the sensing layer.

The foregoing aspects and other aspects of the invention will be apparent from the description of the appended claims appended claims

1‧‧‧ Current touch panel structure in the manufacturing process

11‧‧‧Substrate

111‧‧‧Blank area

12‧‧‧Decorative layer

13‧‧‧Electrode layer

14‧‧‧Protective layer

15‧‧‧Resistance diaphragm

16‧‧‧ Strengthening fluid

21‧‧‧Substrate

22‧‧‧Sensor layer

221‧‧‧Decorative layer

222‧‧‧electrode layer

223‧‧‧Protective layer

23‧‧‧Barrier

24‧‧‧First barrier film, second barrier film

25‧‧‧ Strengthening fluid

4‧‧‧ touch device

51~55‧‧‧Step process

The first A figure is a partial structural diagram of the first embodiment of the current touch panel in the manufacturing process.

The first B picture is one of the current embodiments of the touch panel in the process stage. Part of the structure diagram.

The first C diagram is a partial structural diagram of the third embodiment of the current touch panel in the manufacturing process.

The first D picture is a partial structural diagram of the fourth embodiment of the current touch panel in the manufacturing process.

The second through second to the second F are schematic structural diagrams of the single-step glass touch panel in each step.

The third and third B drawings are schematic diagrams of other structural aspects of the single-piece glass touch panel of the present invention in a process of strengthening the substrate.

The fourth figure is a schematic diagram of an embodiment of a product having one of the touch panel structures of the present invention.

The fifth figure is a flowchart of a method for manufacturing a touch panel according to an embodiment of the present invention.

The technical features, contents, advantages and advantages of the present invention will be understood by the reviewing committee, and the present invention will be described in detail with reference to the accompanying drawings. The subject matter is only for the purpose of illustration and description. It is not intended to be a true proportion and precise configuration after the implementation of the present invention. Therefore, the scope and configuration relationship of the attached drawings should not be interpreted or limited. First described.

Please refer to FIG. 2A to FIG. 2F and FIG. 5 respectively, which are respectively a structural diagram of a single-chip glass touch panel in each step process, and a flowchart of a method for manufacturing the touch panel according to the embodiment of the present invention. The second to second F diagrams may correspond to the structural diagram of the flowchart of the fifth embodiment for explaining the manufacturing process of the touch panel of the present invention and the process steps of the enhancement thereof. First, as shown in step 51 of the fifth figure, a substrate is first provided. In actual implementation, as shown in FIG. 2A, a substrate 21 is provided at the beginning of the process; in this embodiment, The substrate 21 is preferably a glass substrate, which may be a cover lens; in practice, it is not limited to such material.

Then, as described in step 52, a sensing layer and a barrier layer may be disposed on a surface of the substrate, and a spacing is provided between the sensing layer and the barrier layer. As shown in FIG. 2B, a sensing layer 22 may be disposed on the surface of the substrate 21, which functions as a touch structure of the monolithic glass touch panel of the embodiment of the present invention.

The sensing layer 22 preferably further includes a decorative layer 221 , an electrode layer 222 , and a protective layer 223 . The decorative layer 221 can be used to shield the lines around the touch panel; the electrode layer 222 can be disposed on the surface of the substrate 21 adjacent to the decorative layer 221. In this embodiment, the decorative layer 221 is preferably made of a material of a photoresist or an oil film; the electrode layer 222 is preferably a transparent electrode layer, such as an Indium Tin Oxide (ITO) electrode; In actual implementation, it is not limited to the above material aspects.

Also, the protective layer 223 may be disposed on a surface of the decorative layer 221 and the electrode layer 222 that is not connected to the glass substrate 21, and the protective layer 223 may further extend to be connected to the glass substrate 21.

A barrier layer 23 may be further disposed at a distance from the sensing layer 22 at a certain distance. In one embodiment, the barrier layer 23 is connected to the barrier film to form a protective structure, and the barrier protective liquid aspirates the decorative layer and/or the electrode layer. The material of the barrier layer 23 may be an organic or inorganic material, which may be completed in the same process as the protective layer 223 described above, and is the same material as the protective layer 223, and the barrier layer 23 may be the same color as the decorative layer 221 to reduce the chromatic aberration. And the visibility of the barrier layer 23. In this embodiment, the barrier layer 23 is preferably transparent; in practice, the color of the barrier layer 23 is not limited.

Then, as described in step 53, a first barrier film is disposed on the other surface of the substrate, and a second barrier film is disposed on the sensing layer and the other surface of the barrier layer. , as shown in the second D diagram, a first barrier film 24 is disposed on the other surface of the glass substrate 21, and the sensing layer is A second barrier film 24 is disposed on the other surface of the barrier layer 23. In this embodiment, the isotropic barrier film 24 can be a polymer material.

Then, as described in step 54, a process of strengthening the substrate is performed. In actual implementation, the touch panel can be placed in a strengthening liquid 25 for strengthening the glass substrate as shown in FIG. The substrate of the touch panel is subjected to a strengthening process. It should be noted that the strengthening liquid 25 is usually hydrofluoric acid to chemically etch sharp sharp spikes or minute fragments on the cut surface of the glass into relatively flat edges to enhance the strength of the substrate.

Finally, as described in step 55, the first barrier film and the second barrier film are removed. In actual implementation, the first and second barriers may be removed after the reinforcement process is completed, as shown in the second F diagram. The film 24 forms the touch panel structure of the present invention. In addition, it is worth mentioning that, in the second F diagram, the last barrier layer 23 is left in the structure of the single-glass type touch panel of the embodiment of the present invention; however, in actual implementation, it may be according to specifications or The design requires, removing or retaining the barrier layer 23.

Please refer to the third and third B drawings, which are schematic diagrams of other structural aspects of the single-piece glass touch panel of the present invention in a process of strengthening the substrate, to further illustrate the monolithic glass touch panel structure of the present invention. Other basic embodiments of the barrier layer 23 are. As shown, the basic implementation of the monolithic glass touch panel structure in Figures 3A and 3B is primarily analogous to the basic implementation of the embodiment as in FIG.

It is further illustrated that, in the embodiments of the third and third B diagrams, the embodiment of the barrier layer 23 can be as shown in FIG. 3A, compared to the specific embodiment in the second E diagram. , the implementation of the left and right double layers; or as shown in the third B, the implementation of the upper and lower double layers. It should be understood by those of ordinary skill in the art to which the present invention pertains that the embodiment of the barrier layer 23 is merely illustrative and not limiting.

Please refer to the fourth figure, which is a schematic diagram of an embodiment of a touch panel structure of the present invention for further illustrating the touch device of the present invention. The touch panel structure of the present invention can be disposed on the touch device 4, wherein the touch device 4 can be, for example, a display with touch function and touch function. Capable of holding mobile devices or electronic products with touch functions, but not limited to them. As shown in the figure, in the embodiment, the touch panel structure in the touch device 4 can include the substrate 21, the sensing layer 22 and the barrier layer 23; and the barrier layer 23 can be used in the touch device 4. The monolithic glass touch panel structure reduces the chance of the forcing liquid eroding to the sensing layer 22 during the secondary strengthening process.

It should be noted that those skilled in the art to which the present invention pertains should understand that the substrate 21, the sensing layer 22, and the sensing layer 22 further include the material states of the decorative layer 221, the electrode layer 222, and the protective layer 223. The embodiments of the materials, colors, structures, and the like of the barrier layer 23 are merely illustrative and not limiting, and any method, touch panel structure, and touch device thereof that do not deviate from the touch panel of the present invention Both the spirit and the scope should be included in the spirit of the present invention and will be described herein first.

In summary, the method for manufacturing a touch panel, the structure of the touch panel, and the touch device thereof are provided by providing another barrier layer to reduce the gap of the barrier film and serve as a touch panel. The structure avoids the protective layer of the reinforcement liquid; in addition, the barrier layer needs to be spaced apart from the original protective layer, and its function is to reduce the chance of the strengthening liquid eroding to the sensing layer and the barrier layer does not damage the sensing layer when peeling off. In addition, the blank area of the touch panel can be reduced to reduce the difference in appearance of the single-glass touch panel and increase the utilization rate of the substrate.

The method for manufacturing the touch panel of the present invention, the structure of the touch panel, and the preferred embodiment of the touch device have been described above with reference to the drawings. All of the features disclosed in this specification may be combined with other methods, and each of the features disclosed in the specification may be selectively replaced with the same, equal or similar purpose features, and thus, in addition to the particularly salient features All of the features disclosed in this specification are only one example of equal or similar features. After the description of the preferred embodiment of the present invention, it should be understood by those skilled in the art that the present invention is a novel, progressive, and practical invention, and has profound development value. The present invention has been modified by those skilled in the art and is intended to be modified as described in the appended claims.

51~55‧‧‧Step process

Claims (10)

A method for manufacturing a touch panel, comprising: providing a substrate; disposing a sensing layer and a barrier layer on a surface of the substrate, and having a spacing between the sensing layer and the barrier layer; a first barrier film is disposed on the other surface of the substrate, and a second barrier film is disposed over the sensing layer and the barrier layer; and a reinforced substrate process is performed. The method of claim 1, wherein the setting of the barrier layer is the same as the setting of one of the protective layers. The method of claim 1, wherein the substrate is a glass substrate. The method of claim 1, wherein the barrier layer has the same color as one of the decorative layers. The method of claim 1, further comprising the step of removing the first barrier film and the second barrier film. A touch panel structure is suitable for a process of reinforcing a substrate, wherein the process of strengthening the substrate comprises: providing a first barrier film and a second barrier film on the lower surface of the touch panel structure, and the strengthening base After the process of the material processing, the first barrier film and the second barrier film are removed, the touch panel structure comprises: a substrate; a sensing layer disposed on a surface of the substrate; A barrier layer is disposed on the surface of the substrate for contacting the one of the resistive films and having a spacing from the sensing layer. The touch panel structure of claim 6, wherein the sensing layer further comprises a decorative layer, a protective layer and an electrode layer. The touch panel structure of claim 7, wherein the barrier layer has the same color as the decorative layer. The touch panel structure of claim 6, wherein the substrate is a glass substrate. A touch device includes a touch panel structure, and the touch panel structure is suitable for a process of reinforcing a substrate, wherein the process of strengthening the substrate comprises: providing a first barrier film and a second barrier film on the touch panel The first two upper surfaces of the structure are removed, and the first barrier film and the second barrier film are removed after the process of reinforcing the substrate, the touch panel structure comprises: a glass substrate; a sensing layer is disposed on a surface of the glass substrate; and a barrier layer disposed on the surface of the glass substrate for contacting the one of the barrier films in the process of reinforcing the substrate, and the feeling There is a gap between the layers.