Touch screen manufacturing process and touch screen

Abstract

The invention discloses a touch screen manufacturing process. The touch screen manufacturing process comprises the steps that S1, a BM layer is manufactured on a glass substrate; s2, manufacturing a first OC layer on the BM layer; s3, manufacturing a first Metal layer on the first OC layer; s4, manufacturing a second OC layer on the first Metal layer; s5, manufacturing a second Metal layer on the second OC layer; s6, manufacturing a third OC layer on the second Metal layer; and the same Mask is shared when the first OC layer, the second OC layer and the third OC layer are manufactured. According to the touch screen manufacturing process, the number of Masks is reduced, and the manufacturing cost can be greatly reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of touch screens. Specifically, the present invention relates to a touch screen manufacturing process and a touch screen. Background Art

[0002] Currently, touch screens generally have an OGS / Sensor structure, which is further divided into ITO Jumper / Metal Jumper / double-sided ITO / single-sided ITO / mesh structures.

[0003] Due to the reflection of light intensity, interference will be formed during the production alignment process, and the alignment accuracy will be greatly affected. This means that the same number of Masks (screen printing stencils) need to be made for each manufacturing process. Since the manufacturing cost of the Mask structure is relatively expensive, the production cost is relatively high.

[0004] The technical solution of the existing Mesh structure product is as follows:

[0005] 1. Make a BM (blackening layer) pattern on a glass substrate carrier;

[0006] 2. Make an OC0 (insulating layer) pattern on the BM pattern;

[0007] 3. Make a Metal1 (functional layer) pattern on the OC0 pattern;

[0008] 4. Make an OC1 (insulating layer) pattern on the Metal1 pattern;

[0009] 5. Make a Metal2 (functional layer) pattern on the OC1 pattern;

[0010] 6. Make an OC2 (insulating layer) pattern on the Metal2 pattern.

[0011] In the above structure, the Mask target alignment design is as follows:

[0012] 1. Leave a cross alignment target for the OC0 process after the BM process;

[0013] 2. Leave a cross alignment target for the Metal1 process after the OC0 process;

[0014] 3. Leave a cross alignment target for the OC1 process after the Metal1 process;

[0015] 4. Leave a cross alignment target for the Metal2 process after the OC1 process;

[0016] 5. Leave a cross alignment target for the OC2 process after the Metal2 process.

[0017] During the production process of a touch screen, corresponding Mask circuits need to be designed and manufactured for each process. After the alignment of the BM cross target in the OC0 process, an alignment frame mark is formed. During the alignment in the OC1 process, the influence of the target frame brightness will cause interference and make it impossible to align and focus. As a result, 6 masks need to be manufactured for this structural product, and the excessive number of masks leads to an increase in the risk of fixed quality abnormalities during the production process. Summary of the Invention

[0018] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a touch screen manufacturing process with the aim of reducing production costs.

[0019] To achieve the above object, the technical solution adopted by the present invention is as follows: A touch screen manufacturing process, including the steps:

[0020] S1. Manufacture a BM layer on a glass substrate;

[0021] S2. Manufacture a first OC layer on the BM layer;

[0022] S3. Manufacture a first Metal layer on the first OC layer;

[0023] S4. Manufacture a second OC layer on the first Metal layer;

[0024] S5. Manufacture a second Metal layer on the second OC layer;

[0025] S6. Manufacture a third OC layer on the second Metal layer;

[0026] The same mask is shared when manufacturing the first OC layer, the second OC layer, and the third OC layer.

[0027] In step S1, after manufacturing the BM layer, a cross alignment target is left.

[0028] In step S1, after aligning and manufacturing the cross target formed after manufacturing the BM layer, an alignment frame mark is formed, and a black BM blocking block is separately provided in the alignment frame mark area.

[0029] The present invention also provides a touch screen manufactured by using the above touch screen manufacturing process.

[0030] The touch screen includes a glass substrate, a BM layer provided on the glass substrate, a first OC layer provided on the BM layer, a first Metal layer provided on the first OC layer, a second OC layer provided on the first Metal layer, a second Metal layer provided on the second OC layer, and a third OC layer provided on the second Metal layer.

[0031] The manufacturing process of the touch screen of the present invention reduces the number of masks, which can greatly reduce the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] This specification includes the following drawings, the contents shown are respectively:

[0033] Figure 1 is a schematic structural diagram of the touch screen;

[0034] Figure 2 and Figure 3 is a process chart of the mask target alignment;

[0035] In the figure, the markings are: 1, BM layer; 2, first OC layer; 3, first Metal layer; 4, second OC layer; 5, second Metal layer; 6, third OC layer; 7, glass carrier. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The following is a further detailed description of the specific embodiments of the present invention with reference to the drawings, aiming to help those skilled in the art have a more complete, accurate and in-depth understanding of the concept and technical solution of the present invention, and facilitate its implementation.

[0037] It should be noted that in the following embodiments, the "first", "second" and "third" do not represent an absolute distinction relationship in terms of structure and / or function, nor do they represent the execution order, but are only for the convenience of description.

[0038] As Figures 1 to 3 shown, the present invention provides a manufacturing process of a touch screen, including the following steps:

[0039] S1. Fabricate a BM layer on a glass substrate;

[0040] S2. Fabricate a first OC layer on the BM layer;

[0041] S3. Fabricate a first Metal layer on the first OC layer;

[0042] S4. Fabricate a second OC layer on the first Metal layer;

[0043] S5. Fabricate a second Metal layer on the second OC layer;

[0044] S6. Fabricate a third OC layer on the second Metal layer.

[0045] Among them, the same mask is used when fabricating the first OC layer, the second OC layer and the third OC layer. This can reduce the number of masks, thereby greatly reducing the manufacturing cost.

[0046] In the above step S1, after manufacturing the BM layer, a cross alignment target is left.

[0047] In the above step S1, after aligning with the cross target formed after manufacturing the BM layer, an alignment frame mark is formed. A black BM blocking block is separately set in the area of the alignment frame mark. Since the black light reflection at the bottom is relatively low, it can be not affected by the brightness of the alignment frame mark in the previous process (BM layer / First OC layer) during the second OC layer process, and normal alignment and focusing can be achieved.

[0048] Based on the low black light reflection at the bottom of the alignment area, the alignment during the third OC layer process is not interfered by the brightness of the alignment frame mark in the previous processes (BM layer / First OC layer / Second OC layer), and normal alignment and focusing can be achieved.

[0049] The above-mentioned touch screen manufacturing process, compared with the prior art, reduces the 3-layer OC process Mask design to 1-layer OC process Mask, reducing 2 Masks, which can greatly reduce the manufacturing cost and quality risk.

[0050] The present invention also provides a touch screen manufactured by using the above-mentioned touch screen manufacturing process.

[0051] As Figure 1 shown, the touch screen includes a glass substrate, a BM layer provided on the glass substrate, a first OC layer provided on the BM layer, a first Metal layer provided on the first OC layer, a second OC layer provided on the first Metal layer, a second Metal layer provided on the second OC layer, and a third OC layer provided on the second Metal layer.

[0052] The present invention has been described exemplarily in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as various non-substantial improvements are made by adopting the method concept and technical solution of the present invention; or without improvement, the above concept and technical solution of the present invention are directly applied to other occasions, they are all within the protection scope of the present invention.

Claims

1. Touch screen manufacturing process, including the steps of: S1. Fabricate a BM layer on a glass substrate; S2. Fabricate a first OC layer on the BM layer; S3. Fabricate a first Metal layer on the first OC layer; S4. Fabricate a second OC layer on the first Metal layer; S5. Fabricate a second Metal layer on the second OC layer; S6. Fabricate a third OC layer on the second Metal layer; Characterized in that, The same mask is shared when fabricating the first OC layer, the second OC layer, and the third OC layer.

2. The manufacturing process of the touch screen according to claim 1, characterized in that, In step S1, after fabricating the BM layer, leave a cross alignment target.

3. The manufacturing process of the touch screen according to claim 2, wherein, In step S1, after aligning with the cross target formed after fabricating the BM layer, form an alignment frame mark, and separately set a black BM blocking block in the alignment frame mark area.

4. The manufacturing process of the touch screen according to claim 1, wherein, In step S1, after fabricating the BM layer, leave a cross alignment target.

5. The manufacturing process of the touch screen according to claim 4, characterized in that, In step S1, after aligning with the cross target formed after fabricating the BM layer, form an alignment frame mark, and separately set a black BM blocking block in the alignment frame mark area.

6. The manufacturing process of the touch screen according to claim 1, characterized in that, In step S1, after fabricating the BM layer, leave a cross alignment target.

7. The manufacturing process of the touch screen according to claim 6, characterized in that, In step S1, after aligning with the cross target formed after fabricating the BM layer, form an alignment frame mark, and separately set a black BM blocking block in the alignment frame mark area.

8. Touch screen, characterized in that, The touch screen is manufactured by using the touch screen manufacturing process according to any one of claims 1 to 7.

9. The touch screen according to claim 8, characterized in that, It includes a glass substrate, a BM layer provided on the glass substrate, a first OC layer provided on the BM layer, a first Metal layer provided on the first OC layer, a second OC layer provided on the first Metal layer, a second Metal layer provided on the second OC layer, and a third OC layer provided on the second Metal layer.

Images