Touch panel material and touch display screen

Abstract

The utility model relates to a touch display screen, in particular to a touch panel material. The driving layer / sensing layer ITO of the touch panel avoids the silver paste on one side of the sensing layer / driving layer, namely, the projection of the silver paste on one side of the sensing layer / driving layer on the driving layer / sensing layer ITO is not overlapped with the driving layer / sensing layer ITO, so that the problem that the silver paste on one side of the sensing layer / driving layer cannot pass an adhesive force test is solved. Although the modification of the driving layer / sensing layer ITO does not conform to the current design specification, the edge response of the touch display screen may be insensitive theoretically, but the problem of insensitive edge response does not affect the use experience of the user for the touch display screen which does not need the user to perform touch operation on the edge of the touch display screen in design.

Description

TECHNICAL FIELD

[0001] The utility model relates to a touch display screen, especially a touch panel material. BACKGROUND

[0002] The touch display screen is composed of a cover plate, a touch panel and a display panel. The touch panel material is manufactured by forming an ITO (Indium Tin Oxide) sensing layer and an ITO driving layer on both sides of a glass, and then printing a peelable protective glue on the ITO sensing layer and the ITO driving layer. The protective glue includes two parts, one part corresponding to the visual area of the touch display screen, which is called visual area protective glue, and the other part surrounding the visual area protective glue, corresponding to the non-visual area of the touch display screen, which is called non-visual area protective glue.

[0003] Then, according to the silver paste electrode pattern on the sensing layer side and the driving layer side, it is determined whether to print the silver paste on the sensing layer side first or the driving layer side first. Some can only print the silver paste on the sensing layer side first, some can only print the silver paste on the driving layer side first, and some can print the silver paste on the sensing layer side first or the driving layer side first. For example, if the laser line of the etching silver paste on the sensing layer side passes through the silver paste on the driving layer side, it can only print the silver paste on the sensing layer side first, because if the silver paste on the driving layer side is printed first, the laser will break the silver paste on the driving layer side when the laser etches the silver paste on the sensing layer side.

[0004] Taking the printing of the silver paste on the sensing layer side first as an example, the non-visual area protective glue on the sensing layer side is first torn off to expose the area to be printed with silver paste, and then the silver paste is printed. The silver paste is laser etched, and then the non-visual area protective glue on the driving layer side is torn off to print the silver paste on the driving layer side. The silver paste on the driving layer side is laser etched.

[0005] According to the current design specification, the silver paste on the side of the touch panel sensing layer overlaps the projection of the driving layer ITO, if the silver paste on the side of the sensing layer is printed first, when the silver paste on the side of the sensing layer is laser etched, along the laser incidence direction, the silver paste on the side of the sensing layer, glass, driving layer ITO and non-visible area protective glue on the side of the driving layer are in turn, there is a phenomenon that laser reflection back to the silver paste on the side of the sensing layer causes damage, resulting in that the silver paste on the side of the sensing layer cannot pass the adhesion test. The silver paste on the side of the driving layer of some touch panels overlaps the projection of the sensing layer ITO, if the silver paste on the side of the driving layer is printed first, when the silver paste on the side of the driving layer is laser etched, along the laser incidence direction, the silver paste on the side of the driving layer, glass, sensing layer ITO and non-visible area protective glue on the side of the sensing layer are in turn, there is a phenomenon that laser reflection back to the silver paste on the side of the driving layer causes damage, resulting in that the silver paste on the side of the driving layer cannot pass the adhesion test. The silver paste on the side of the sensing layer of some touch panels overlaps the projection of the driving layer ITO, and the silver paste on the side of the driving layer overlaps the projection of the sensing layer ITO, if the silver paste on the side of the sensing layer is printed first, the silver paste on the side of the sensing layer cannot pass the adhesion test, if the silver paste on the side of the driving layer is printed first, the silver paste on the side of the driving layer cannot pass the adhesion test.

[0006] For the touch panel that can print the silver paste on the side of the sensing layer first or the silver paste on the side of the driving layer first, if the silver paste on the side of the sensing layer overlaps the projection of the driving layer ITO, the silver paste on the side of the driving layer can be printed first, if the silver paste on the side of the driving layer overlaps the projection of the sensing layer ITO, the silver paste on the side of the sensing layer can be printed first, if both are overlapped, there is no method in the industry at present.

[0007] For the touch panel that can only print the silver paste on the side of the sensing layer first, if the silver paste on the side of the sensing layer overlaps the projection of the driving layer ITO, there is no method in the industry at present. For the touch panel that can only print the silver paste on the side of the driving layer first, if the silver paste on the side of the driving layer overlaps the projection of the sensing layer ITO, there is no method in the industry at present. Practical new type content

[0008] The technical problem to be solved by the utility model is that the silver paste on the side of the sensing layer / driving layer cannot pass the adhesion test according to the current design specification.

[0009] To solve the above technical problems, the inventor of the utility model has made different attempts and found that if the ITO pattern of the driving layer / sensing layer is modified, the ITO of the driving layer / sensing layer avoids the silver paste on the side of the sensing layer / driving layer, that is, the projection of the silver paste on the side of the sensing layer / driving layer on the ITO of the driving layer / sensing layer does not overlap the ITO of the driving layer / sensing layer, the problem that the silver paste on the side of the sensing layer / driving layer cannot pass the adhesion test can be solved. Although this modification of the ITO of the driving layer / sensing layer does not conform to the current design specification, it may theoretically result in that the edge response of the touch display screen is not sensitive, but for the touch display screen which does not need to be touched by the user on the edge of the touch display screen, the problem of the edge response not being sensitive does not affect the user experience.

[0010] The utility model provides a kind of touch panel material, including panel glass, sensing layer ITO, driving layer ITO, sensing silver paste electrode and driving silver paste electrode, the two sides of panel glass are sensing surface and driving surface respectively, sensing layer ITO and sensing silver paste electrode are attached to the sensing surface of panel glass, driving layer ITO and driving silver paste electrode are attached to the driving surface of panel glass, in the area corresponding to the visible area of touch display screen, both sensing layer ITO and driving layer ITO are provided with protective glue.In the area corresponding to the non-visible area of touch display screen, the laser etching line of sensing layer ITO and driving silver paste electrode is staggered, different from the standard ITO of sensing layer;Or, in the area corresponding to the non-visible area of touch display screen, the laser etching line of driving layer ITO and sensing silver paste electrode is staggered, different from the standard ITO of driving layer.

[0011] For the touch panel material that sensing silver paste electrode is printed and etched first, since in the area corresponding to the non-visible area of touch display screen, the laser etching line of driving layer ITO and sensing silver paste electrode is staggered, when laser etching sensing silver paste electrode, along the laser incidence direction, in turn, it is sensing layer side silver paste, glass and driving layer side non-visible area protective glue, avoid laser reflection damage sensing layer side silver paste.For the touch panel material that driving silver paste electrode is printed and etched first, since in the area corresponding to the non-visible area of touch display screen, the laser etching line of sensing layer ITO and driving silver paste electrode is staggered, when laser etching driving silver paste electrode, along the laser incidence direction, in turn, it is driving layer side silver paste, glass and sensing layer side non-visible area protective glue, avoid laser reflection damage driving layer side silver paste.

[0012] The utility model also provides a touch display screen, including cover plate, touch panel and display panel, touch panel includes panel glass, response layer ITO, drive layer ITO, response silver paste electrode and drive silver paste electrode, the both sides of panel glass are response surface and drive surface respectively, response layer ITO and response silver paste electrode are attached to the response surface of panel glass, drive layer ITO and drive silver paste electrode are attached to the drive surface of panel glass, in the area corresponding to the non-visible area of touch display screen, response layer ITO / drive layer ITO and drive silver paste electrode / response silver paste electrode's laser etching circuit are staggered, and it is different from corresponding standard ITO. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is acid-resistant pattern of response surface of the utility model embodiment one;

[0014] Figure 2 It is acid-resistant pattern of drive surface of the utility model embodiment one;

[0015] Figure 3 It is protective glue pattern of response surface of the utility model embodiment one;

[0016] Figure 4 It is protective glue pattern of drive surface of the utility model embodiment one;

[0017] Figure 5 It is the schematic view of the protective glue of response surface of the utility model embodiment one printing on response layer ITO;

[0018] Figure 6 It is the schematic view of the protective glue of drive surface of the utility model embodiment one printing on drive layer ITO;

[0019] Figure 7 It is Figure 5 The schematic view of response surface tear off non-visible area protective glue;

[0020] Figure 8 It is silver paste pattern of response surface of the utility model embodiment one;

[0021] Figure 9 It is Figure 7 The schematic view of response surface silver paste printing;

[0022] Figure 10 It is Figure 9 The schematic view of response surface silver paste being etched by laser;

[0023] Figure 11 It is insulation pattern of response surface of the utility model embodiment one;

[0024] Figure 12 It is Figure 10 The schematic view of response surface insulation glue printing;

[0025] Figure 13 is a schematic view of the driving surface after the non-visible area protective adhesive is torn off; Figure 6

[0026] Figure 14 is a silver paste pattern printed on the driving surface of the embodiment one of the utility model;

[0027] Figure 15 is a schematic view of the driving surface after the driving surface silver paste is printed; Figure 13

[0028] Figure 16 is a schematic view of the driving surface silver paste after being etched by laser; Figure 15

[0029] Figure 17 is an insulating pattern of the driving surface of the embodiment one of the utility model;

[0030] Figure 18 is a schematic view of the driving surface after the driving surface insulating adhesive is printed; Figure 16

[0031] Figure 19 is a schematic view of the touch panel material of the embodiment one of the utility model. DETAILED DESCRIPTION Embodiment one

[0032] Referring to Figure 19 , the embodiment provides a touch panel material, which comprises a panel glass, an induction layer ITO (the pattern is shown in Figure 1 ), a driving layer ITO (the pattern is shown in Figure 2 ), an induction silver paste electrode (the silver paste printed pattern is shown in Figure 8 ), a driving silver paste electrode (the silver paste printed pattern is shown in Figure 14 ), an induction surface insulating adhesive (the pattern is shown in Figure 11 ), a driving surface insulating adhesive (the pattern is shown in Figure 17 ), the two surfaces of the panel glass are an induction surface and a driving surface respectively, the induction layer ITO and the induction silver paste electrode are attached to the induction surface of the panel glass, the induction surface insulating adhesive is attached to the induction layer ITO and the induction silver paste electrode, the driving layer ITO and the driving silver paste electrode are attached to the driving surface of the panel glass, and the driving surface insulating adhesive is attached to the driving layer ITO and the driving silver paste electrode. The induction layer ITO further has an induction surface visible area protective adhesive attached thereto, and the driving layer ITO further has a driving surface visible area protective adhesive attached thereto. The thickness of the induction silver paste electrode is 7-10 microns, the thickness of the driving silver paste electrode is 7-10 microns, the thickness of the panel glass is 0.4-1.1 mm, the thickness of the protective adhesive on the induction layer ITO is 25-35 microns, and the thickness of the protective adhesive on the driving layer ITO is 25-35 microns.​​​​

[0033] The laser etching line of the sensing silver paste electrode pattern of the touch panel material conflicts with the driving silver paste electrode pattern, that is, when the sensing silver paste electrode is etched, the laser passing through the panel glass will hit the driving silver paste electrode. Therefore, the touch panel material needs to first make the sensing silver paste electrode, the sensing surface being the first surface in the silver paste electrode process sequence, and the driving surface being the second surface in the silver paste electrode process sequence.

[0034] To avoid laser reflection from damaging the sensing silver paste, the inventors of the present application modify the ITO pattern of the driving surface, that is, modify the acid-resistant pattern of the driving surface. The modified acid-resistant pattern of the driving surface is shown in FIG. 2B. Figure 2 In the area corresponding to the visual area of the touch display screen, the modified ITO of the driving surface has no difference compared with the standard ITO of the driving surface conforming to the current design specification. In the area corresponding to the non-visual area of the touch display screen, the modified ITO of the driving surface is reduced in area compared with the standard ITO of the driving surface conforming to the current design specification, and avoids the laser etching line of the sensing silver paste electrode pattern.

[0035] The manufacturing method of the touch panel material is as follows:

[0036] Step S1: comparing the sensing silver paste electrode pattern and the driving silver paste electrode pattern to determine the process sequence of the silver paste electrode;

[0037] Since the laser etching line of the sensing silver paste electrode pattern conflicts with the driving silver paste electrode pattern, the sensing silver paste electrode needs to be made first, the sensing surface being the first surface in the silver paste electrode process sequence, and the driving surface being the second surface in the silver paste electrode process sequence.

[0038] Step S2: determining the ITO pattern of the driving surface;

[0039] Comparing the sensing silver paste electrode pattern with the standard ITO pattern of the driving surface, since the laser etching line of the sensing silver paste electrode pattern conflicts with the standard ITO pattern of the driving surface (that is, the projection of the silver paste on the sensing layer side overlaps with the driving layer ITO), the ITO pattern of the driving surface needs to be redesigned to stagger the ITO pattern of the driving surface and the laser etching line of the sensing silver paste electrode pattern.

[0040] Step S3: making the sensing layer ITO and the driving layer ITO on the sensing surface and the driving surface of the panel glass respectively according to the standard ITO pattern of the sensing surface and the ITO pattern of the driving surface redesigned in step S2;

[0041] ITO layers are made on both surfaces of the panel glass; the standard ITO pattern of the sensing surface is determined, that is, the ITO pattern of the sensing surface is determined according to the standard ITO pattern of the sensing surface. Figure 1The acid-resistant pattern of the sensing surface is printed on the ITO layer of the sensing surface, and the diagonal filled area is the area where acid-resistant needs to be printed. The acid-resistant of the sensing surface is baked and cured. The ITO pattern of the driving surface is redesigned according to step S2, that is Figure 2 The acid-resistant pattern of the driving surface is printed on the ITO layer of the driving surface, and the diagonal filled area is the area where acid-resistant needs to be printed. The acid-resistant of the driving surface is baked and cured. The ITO layers of the sensing surface and the driving surface are etched, so that the sensing layer ITO and the driving layer ITO are formed on the panel glass.

[0042] Step S4: A peelable protective glue is made on the sensing layer ITO and the driving layer ITO respectively, and the protective glue includes a visual area protective glue and a non-visual area protective glue.

[0043] According to Figure 3 The protective glue pattern of the sensing surface is printed on the ITO of the sensing surface, and the diagonal filled area is the area where the protective glue needs to be printed. The protective glue of the sensing surface is baked and cured by the oven. According to Figure 4 The protective glue pattern of the driving surface is printed on the ITO of the driving surface, and the diagonal filled area is the area where the protective glue needs to be printed. The protective glue of the driving surface is baked and cured by the infrared tunnel furnace. Referring to Figure 3 The protective glue of the sensing surface includes a visual area protective glue and a non-visual area protective glue. Referring to Figure 4 The protective glue of the driving surface includes a visual area protective glue and a non-visual area protective glue. Figure 3 The protective glue of the sensing surface is attached to the ITO of the sensing surface as shown in Figure 5 Figure 4 The protective glue of the driving surface is attached to the ITO of the driving surface as shown in Figure 6

[0044] Step S5: According to the process sequence determined in step S1, the sensing silver paste electrode and the driving silver paste electrode are respectively made on the sensing surface and the driving surface of the panel glass.

[0045] The non-visual area protective glue of the sensing surface is torn off (before and after tearing off, see Figure 5 and 7 According to the sensing silver paste electrode pattern, the silver paste is printed on the sensing surface, the sensing silver paste electrode pattern includes a silver paste printing pattern and a laser etching line A, the silver paste printing pattern is shown in Figure 8 , and the diagonal filled area is the area where the silver paste needs to be printed, before and after printing, see Figure 7 and 9 The silver paste of the sensing surface is baked and cured. According to the sensing silver paste electrode pattern, the silver paste of the sensing surface is laser etched (before and after etching, see Figure 9 and 10 ​​); perform circuit checks and tests on the sensing surface; if the circuit checks and tests pass, then according to Figure 11 The insulating pattern shown is applied to the inductive silver paste electrode, and insulating adhesive is printed on it (see before and after printing). Figure 10 and 12 The diagonally filled area is the area where insulating adhesive needs to be printed; the insulating adhesive on the sensing surface is baked and cured;

[0046] Remove the protective adhesive from the non-visible area of ​​the drive surface (see before and after removal). Figure 6 and 13 According to the driving silver paste electrode pattern, silver paste is printed on the driving surface. The driving silver paste electrode pattern includes a silver paste printing pattern and laser-etched lines B. See [link to silver paste printing pattern]. Figure 14 The diagonally filled area is the area where silver paste needs to be printed. See before and after printing. Figure 13 and 15 The silver paste on the driving surface is baked and cured; according to the electrode pattern of the driving silver paste, the silver paste on the driving surface is laser etched (see before and after etching). Figure 15 and 16 Perform circuit checks and tests on the drive surface; if the circuit checks and tests pass, then according to... Figure 17 The insulating pattern shown is applied to the driving surface, and insulating adhesive is printed on the driving silver paste electrode (see before and after printing). Figure 16 and 18 The diagonally filled area is the area where insulating adhesive needs to be printed; the insulating adhesive on the drive surface is baked and cured.

[0047] Because the laser etching lines of the ITO pattern on the driving surface and the sensing silver paste electrode pattern are staggered, when etching the sensing silver paste electrode pattern, the laser passes through the sensing surface silver paste and the panel glass and hits the protective adhesive instead of the driving surface ITO. This avoids the problem of laser reflection damaging the sensing surface silver paste and causing the sensing silver paste electrode to fail the adhesion test. Example 2

[0048] This embodiment provides a touch display screen, which includes a cover plate, a touch panel and a display panel arranged in sequence. The touch panel material provided in Embodiment 1, after the protective adhesive of the visible area is removed, is the touch panel contained in the touch display screen provided in this embodiment.

Claims

1. A touch panel material, comprising panel glass, sensing layer ITO, driving layer ITO, sensing silver paste electrode and driving silver paste electrode, both sides of the panel glass are sensing surface and driving surface respectively, the sensing layer ITO and the sensing silver paste electrode are attached to the sensing surface of the panel glass, the driving layer ITO and the driving silver paste electrode are attached to the driving surface of the panel glass; in the area corresponding to the visual area of the touch display screen, the sensing layer ITO and the driving layer ITO are provided with protective glue; characterized in that: in the area corresponding to the non-visual area of the touch display screen, the laser etching line of the sensing layer ITO is staggered with the laser etching line of the driving silver paste electrode, which is different from the standard ITO of the sensing layer; or in the area corresponding to the non-visual area of the touch display screen, the laser etching line of the driving layer ITO is staggered with the laser etching line of the sensing silver paste electrode, which is different from the standard ITO of the driving layer. When the laser etching line of the sensing silver paste electrode conflicts with the driving silver paste electrode, in the area corresponding to the non-visual area of the touch display screen, the laser etching line of the driving layer ITO is staggered with the laser etching line of the sensing silver paste electrode, which is different from the standard ITO of the driving layer. When the laser etching line of the driving silver paste electrode conflicts with the sensing silver paste electrode, in the area corresponding to the non-visual area of the touch display screen, the laser etching line of the sensing layer ITO is staggered with the laser etching line of the driving silver paste electrode, which is different from the standard ITO of the sensing layer.

2. The touch panel material according to claim 1, wherein: When the laser etching line of the driving silver paste electrode conflicts with the sensing silver paste electrode, in the area corresponding to the non-visual area of the touch display screen, the laser etching line of the sensing layer ITO is staggered with the laser etching line of the driving silver paste electrode, which is different from the standard ITO of the sensing layer.

3. The touch panel material according to claim 2, wherein: When the laser etching line of the driving silver paste electrode conflicts with the sensing silver paste electrode, in the area corresponding to the non-visual area of the touch display screen, the laser etching line of the sensing layer ITO is staggered with the laser etching line of the driving silver paste electrode, which is different from the standard ITO of the sensing layer.

4. The touch panel material according to claim 1, wherein: When the laser etching line of the driving silver paste electrode conflicts with the sensing silver paste electrode, in the area corresponding to the non-visual area of the touch display screen, the laser etching line of the sensing layer ITO is staggered with the laser etching line of the driving silver paste electrode, which is different from the standard ITO of the sensing layer.

5. The touch panel material according to claim 4, wherein: When the laser etching line of the driving silver paste electrode conflicts with the sensing silver paste electrode, in the area corresponding to the non-visual area of the touch display screen, the laser etching line of the sensing layer ITO is staggered with the laser etching line of the driving silver paste electrode, which is different from the standard ITO of the sensing layer.

6. A touch display screen comprising a cover plate, a touch panel and a display panel, the touch panel comprising a panel glass, a sensing layer ITO, a driving layer ITO, a sensing silver paste electrode and a driving silver paste electrode, two sides of the panel glass are respectively a sensing surface and a driving surface, the sensing layer ITO and the sensing silver paste electrode are attached to the sensing surface of the panel glass, and the driving layer ITO and the driving silver paste electrode are attached to the driving surface of the panel glass, characterized in that: ​

Images