Touch screen structure

Abstract

The utility model discloses a touch screen structure which comprises a display area and a non-display area arranged around the display area, and the non-display area is sequentially provided with a glass substrate, a first concave layer, an IM shadow eliminating glass coating film, a second concave layer, a first ITO layer and a metal wire layer. A first OC layer is arranged on a first concave area between a glass substrate and an IM shadow eliminating glass coating film, foreign matters and glass concave and convex points between the glass substrate and the IM shadow eliminating glass coating film are filled and leveled up, and a second OC layer is arranged on a second concave area between the IM shadow eliminating glass coating film and a first ITO layer. According to the touch screen, foreign matters and glass concave-convex points between the shadow eliminating glass coating film and the first ITO layer are filled and leveled up, so that the metal wire layer is arranged on a flat surface, functional hidden dangers caused by the foreign matters and the glass concave-convex points to the metal wire layer are eliminated, and the functional yield and the reliability of the touch screen are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of touch screens, in particular to a touch screen structure. Background Art

[0002] Touch screen technology continues to develop and innovate, and is now widely used in mobile phones, tablet computers, finance, industrial control, public information query and education systems, and other fields, bringing great convenience to people's lives.

[0003] When making touch screens, circuits are made on a glass substrate to realize the touch function of the product. Due to the structural characteristics of the metal wires, dirt and foreign particles will be on the substrate during the production and manufacturing processes. Normal cleaning cannot completely remove them, and the concave and convex defects of the substrate cannot be eliminated, resulting in functional risks of the metal wires, thereby affecting the product functional yield and reliability of use. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a touch screen structure.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A touch screen structure includes: a display area and a non-display area arranged around the display area, wherein a glass substrate, a first recessed area, an IM anti-shadow glass coating, a second recessed area, a first ITO layer and a metal wire layer are sequentially arranged on the non-display area, a first OC layer is arranged on the first recessed area, and a second OC layer is arranged on the second recessed area, and the first OC layer and the second OC layer are used to fill and level the first recessed area and the second recessed area.

[0007] In one embodiment, the thickness of the first OC layer is 0.6 um to 1.0 um.

[0008] In one embodiment, the second OC layer has a thickness of 1.2 um to 1.6 um.

[0009] In one embodiment, the first OC layer and the second OC layer have the same coverage area.

[0010] In one of the embodiments, a third OC layer is disposed on the metal line layer.

[0011] In one of the embodiments, the third OC layer has a thickness of 1.8 um to 2.5 um.

[0012] In one embodiment, the first OC layer, the second OC layer and the third OC layer are made of transparent material.

[0013] In one embodiment, the first OC layer is bonded to the IM glass coating and the glass substrate by using an adhesive.

[0014] In one embodiment, the second OC layer is bonded to the IM glass coating, the first ITO layer and the metal wire layer by using an adhesive.

[0015] In one embodiment, the adhesive is specifically an optically transparent adhesive OCA.

[0016] Compared with the prior art, the utility model has at least the following advantages:

[0017] The utility model provides a touch screen structure in which a first OC layer is arranged on a first recessed area between a glass substrate and an IM annihilation glass coating to fill in foreign matters and glass concave-convex points between the glass substrate and the IM annihilation glass coating, and a second OC layer is arranged on a second recessed area between the IM annihilation glass coating and a first ITO layer to fill in foreign matters and glass concave-convex points between the IM annihilation glass coating and the first ITO layer, thereby making the metal wire layer arranged on a flat surface, thereby eliminating the functional hazards to the metal wire layer caused by foreign matters and glass concave-convex points, and improving the functional yield and reliability of the touch screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0019] Figure 1 This is a schematic diagram of a touch screen structure in one embodiment of the utility model;

[0020] Figure 2 for Figure 1 Another structural schematic diagram of a touch screen structure. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0022] See also Figure 1 and Figure 2 A touch screen structure includes 10: a display area 100 and a non-display area 200 arranged around the display area 100, a glass substrate 210, a first recessed area 220, an IM anti-shadow glass coating 230, a second recessed area 240, a first ITO layer 250 and a metal wire layer 260 are sequentially arranged on the non-display area 200, a first OC layer 221 is arranged on the first recessed area 220, and a second OC layer 241 is arranged on the second recessed area 240, and the first OC layer 221 and the second OC layer 241 are used to fill and level the first recessed area 220 and the second recessed area 240.

[0023] It should be noted that before the layout of the metal wire layer 260, a first OC layer 221 is set in the first recessed area 220 between the glass substrate 210 and the IM extinguishing glass coating 230 to fill in the foreign matter and glass bumps between the glass substrate 210 and the IM extinguishing glass coating 230, and a second OC layer 241 is set between the IM extinguishing glass coating 230 and the second recessed area 240 of the first ITO layer 250 to fill in the foreign matter and glass bumps between the IM extinguishing glass coating 230 and the first ITO layer 250, so that the metal wire layer 260 is laid out on a flat surface, thereby eliminating the functional hazards caused by foreign matter and glass bumps to the metal wire layer 260, and improving the functional yield and reliability of the touch screen; the first OC layer 221 and the second OC layer 241 are made of insulating materials, which can effectively isolate different circuits, prevent short circuits or other electrical problems between circuits, and prevent pollutants, moisture, dust, etc. in the external environment from damaging the circuits.

[0024] See also Figure 2 In one embodiment, the thickness of the first OC layer 221 is 0.6um to 1.0um. When the thickness of the first OC layer 221 is less than 0.6um, the first recessed area 220 cannot be completely filled and leveled. When the thickness of the first OC layer 221 is greater than 1.0um, the thickness of the touch screen will increase.

[0025] Please refer again Figure 2 In one embodiment, the thickness of the second OC layer 241 is 1.2um to 1.6um. When the thickness of the second OC layer 241 is less than 1.2um, the second recessed area 240 cannot be completely filled and leveled. When the thickness of the second OC layer 241 is greater than 1.6um, the thickness of the touch screen will increase.

[0026] Please refer again Figure 2 In one embodiment, the first OC layer 221 and the second OC layer 241 have the same coverage area. This configuration avoids the situation where the metal wire layer 260 is arranged on an uneven surface due to the different coverage areas of the first OC layer 221 and the second OC layer 241, resulting in uneven areas in the non-display area 200.

[0027] Please refer again Figure 2 In one embodiment, a third OC layer 261 is disposed on the metal wire layer 260 . The third OC layer 261 is disposed to protect the pattern on the metal wire layer 260 and prevent the pattern on the metal wire layer 260 from being oxidized.

[0028] Please refer again Figure 2In one embodiment, the thickness of the third OC layer 261 is 1.8um to 2.5um. When the thickness of the third OC layer 261 is less than 1.8um, the anti-oxidation function cannot be optimized. When the thickness of the third OC layer 261 is greater than 2.5um, the thickness of the touch screen will increase.

[0029] Preferably, the first OC layer 221, the second OC layer 241 and the third OC layer 261 are made of transparent materials.

[0030] Please refer again Figure 2 In one embodiment, the first OC layer 221 is bonded to the IM glass coating 230 and the glass substrate 210 by an adhesive, and the second OC layer 241 is bonded to the IM glass coating 230, the first ITO layer 250 and the metal wire layer 260 by an adhesive. In this way, the glass substrate 210, the first OC layer 221, the IM glass coating 230, the second OC layer 241, the first ITO layer 250 and the metal wire layer 260 arranged in sequence in the non-display area 200 can be stably connected to each other, thereby achieving a compact structure. In this embodiment, the adhesive is specifically an optically transparent adhesive OCA.

[0031] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A touch screen structure, characterized in that: include: A display area and a non-display area arranged around the display area, wherein a glass substrate, a first recessed area, an IM anti-shadow glass coating, a second recessed area, a first ITO layer and a metal wire layer are sequentially arranged on the non-display area, a first OC layer is arranged on the first recessed area, and a second OC layer is arranged on the second recessed area, and the first OC layer and the second OC layer are used to fill and level the first recessed area and the second recessed area.

2. The touch screen structure according to claim 1, characterized in that: The first OC layer has a thickness of 0.6 um to 1.0 um.

3. The touch screen structure according to claim 1, characterized in that: The second OC layer has a thickness of 1.2 um to 1.6 um.

4. The touch screen structure according to claim 1, characterized in that: The first OC layer and the second OC layer have the same coverage area.

5. The touch screen structure according to claim 1, characterized in that: A third OC layer is disposed on the metal line layer.

6. The touch screen structure according to claim 5, characterized in that: The thickness of the third OC layer is 1.8um to 2.5um.

7. The touch screen structure according to claim 5, characterized in that: The first OC layer, the second OC layer and the third OC layer are made of transparent materials.

8. The touch screen structure according to claim 1, characterized in that: The first OC layer is bonded to the IM glass coating and the glass substrate by using an adhesive.

9. The touch screen structure according to claim 1, characterized in that: The second OC layer is bonded to the IM glass coating, the first ITO layer and the metal wire layer by using an adhesive.

10. The touch screen structure according to claim 8 or 9, characterized in that: The adhesive is specifically an optically transparent adhesive OCA.

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