CN103207710A - Capacitive touch screen and preparation method thereof - Google Patents
Capacitive touch screen and preparation method thereof Download PDFInfo
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- CN103207710A CN103207710A CN201210008598XA CN201210008598A CN103207710A CN 103207710 A CN103207710 A CN 103207710A CN 201210008598X A CN201210008598X A CN 201210008598XA CN 201210008598 A CN201210008598 A CN 201210008598A CN 103207710 A CN103207710 A CN 103207710A
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- touch screen
- capacitive touch
- photoresists
- electrode layer
- direction electrode
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Abstract
The invention discloses a capacitive touch screen, which comprises a substrate, an electrode layer and a plurality of photo-sensitive resist protecting blocks, wherein the electrode layer is formed on the surface of the substrate; the photo-sensitive resist protection blocks are arranged on the electrode layer; the electrode layer comprises a first direction electrode, a second direction electrode and a plurality of wiring bridges; the first direction electrode and the second direction electrode are isolated and kept insulated through the wiring bridges; and the photo-sensitive resist protecting blocks are arranged on the electrode layer at certain intervals, and cover the wiring bridges. According to the capacitive touch screen, the photo-sensitive resist protecting blocks which are arranged at certain intervals are used for protecting the wiring bridges acting key roles; and compared with the conventional SIO2 full page protection, the capacitive touch screen has the advantage of high insulating performance. The invention further provides a preparation method for the capacitive touch screen.
Description
[technical field]
The present invention relates to the display device field, particularly a kind of capacitive touch screen and preparation method thereof.
[background technology]
Capacitive touch screen is widely used in various information as a kind of emerging information input mode and shows product, as touch-screen mobile phone, GPS navigation system etc.
The electrode layer of traditional capacitive touch screen adopts SIO
2The justifying protection.Yet, use SIO
2Guard electrode layer insulativity is relatively poor.
[summary of the invention]
Based on this, be necessary to provide a kind of insulativity capacitive touch screen and preparation method thereof preferably.
A kind of capacitive touch screen comprises substrate, is arranged on the electrode layer on the described substrate surface and is arranged on a plurality of photoresists protection pieces on the described electrode layer;
Described electrode layer comprises first direction electrode, second direction electrode and a plurality of connecting bridge, and described first direction electrode and described second direction electrode separate and keep insulation by a plurality of described connecting bridges;
Described a plurality of photoresists protections block gap is arranged on the described electrode layer, and covers described connecting bridge.
Preferably, described photoresists protection piece is corresponding one by one with described connecting bridge.
Preferably, each described photoresists protection piece covers at least two described connecting bridges.
Preferably, described photoresists protection piece is rectangle, square, circle or oval.
Preferably, the material of described photoresists protection piece is organic insulator.
Preferably, the thickness of described photoresists protection piece is 1 μ m～3 μ m.
Preferably, described connecting bridge is MoAlMo electric bridge or ITO electric bridge.
Preferably, the material of described first direction electrode and second direction electrode is ITO.
Preferably, described electrode layer also comprises the lead-in wire zone that is electrically connected with described first direction electrode and described second direction electrode respectively, and described lead-in wire zone is coated with photoresists protection piece.
A kind of preparation method of above-mentioned capacitive touch screen comprises the steps:
Step 1, provide the substrate that deposits electrode layer; Described electrode layer comprises first direction electrode, second direction electrode and connecting bridge, and described first direction electrode and described second direction electrode separate and keep insulation by described connecting bridge;
Step 2, photoresists are uniformly coated on the electrode layer of described substrate;
Step 3, exposure expose the photoresists of described connecting bridge position, and remainder covers, and the photoresists that obtain arranging and covering at interval on the described connecting bridge are protected piece;
Step 4, remove unexposed photoresists on the substrate, obtain described capacitive touch screen.
The photoresists protection block protection that this capacitive touch screen arranges at interval by employing plays the connecting bridge of key function, with traditional SIO
2The justifying protection is compared, and insulating property are better.
[description of drawings]
Fig. 1 is the diagrammatic cross-section of the capacitive touch screen of an embodiment;
Fig. 2 is the front schematic view of capacitive touch screen as shown in Figure 1;
Fig. 3 is the synoptic diagram that the lead-in wire zone of capacitive touch screen as shown in Figure 2 covers photoresists protection piece;
Front schematic view when Fig. 4 does not arrange photoresists protection piece for as shown in Figure 1 capacitive touch screen;
Fig. 5 is the preparation flow figure of the capacitive touch screen of an embodiment.
[embodiment]
For the ease of understanding the present invention, with reference to relevant drawings the present invention is described more fully below.Provided preferred embodiment of the present invention in the accompanying drawing.But the present invention can realize with many different forms, be not limited to embodiment described herein.On the contrary, provide the purpose of these embodiment be make the understanding of disclosure of the present invention comprehensively thorough more.
Need to prove that when element is called as " being fixed in " another element, can directly can there be element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be to be directly connected to another element or may to have element placed in the middle simultaneously.Term as used herein " vertical ", " level ", " left side ", " right side " and similar statement are just for illustrative purposes.
Unless otherwise defined, the employed all technology of this paper are identical with the implication that belongs to those skilled in the art's common sense of the present invention with scientific terminology.Employed term is not intended to be restriction the present invention just in order to describe the purpose of specific embodiment in instructions of the present invention herein.Term as used herein " and/or " comprise one or more relevant Listed Items arbitrarily with all combinations.
The employing SIO of traditional capacitive touch screen
2The justifying protection.Yet, use SIO
2Guard electrode layer insulativity is relatively poor.
Based on this, be necessary to provide a kind of insulativity capacitive touch screen and preparation method thereof preferably.
As shown in Figure 1, the capacitive touch screen of an embodiment comprises substrate 10, is arranged on substrate 10 lip-deep electrode layers 20 and is arranged on a plurality of photoresists protection pieces 30 on the electrode layer 20.
In conjunction with Fig. 2 and Fig. 4, electrode layer 20 comprises first direction electrode 22, second direction electrode 24 and a plurality of connecting bridge 26.First direction electrode 22 and second direction electrode 24 be vertical the setting mutually, and separates by a plurality of connecting bridges 26 and to keep mutually insulated.
In the present embodiment, photoresists protection piece 30 is rectangle.In other embodiment, photoresists protection piece 30 can also be square, circular or oval.
By comparison diagram 2 and Fig. 4, can find out clearly that a plurality of photoresists protection pieces 30 are disposed on the electrode layer 20, and cover connecting bridge 26.
In the present embodiment, photoresists protection piece 30 is corresponding one by one with connecting bridge 26.That is, each photoresists protection piece 30 covers and only covers a connecting bridge 26.
In other embodiment, each photoresists protection piece 30 can cover two, three or more connecting bridges 26.Each photoresists protection piece 30 covers a plurality of connecting bridges 26 can simplify preparation technology on the one hand, and on the other hand, the tack of photoresists protection piece 30 is also higher.
This capacitive touch screen plays the connecting bridge 26 of key function by adopting photoresists protection piece 30 protections that arrange at interval, with traditional SIO
2The justifying protection is compared, and insulating property are better.
In addition; adopt the capacitive touch screen of justifying photoresists protection to compare with electrode layer; because justifying photoresists protection cost is higher; be easy to generate open defects such as bubble, residual, color spot, MURA; transmitance is lower simultaneously, and adopts photoresists protection piece 30 protections that arrange at interval to play the connecting bridge 26 of key function, has not only reduced cost; improved open defect greatly, transmitance is enhanced simultaneously.
The good insulation preformance of this capacitive touch screen, transmitance can surpass 90% simultaneously, greatly improves yield, reduces production costs.
The material of first direction electrode 22 and second direction electrode 24 can be ITO, and connecting bridge 26 can be MoAlMo electric bridge or ITO electric bridge.
The material of photoresists protection piece 30 can be Organic (organic insulator), can select photosensitive type epoxy resin POCA37 glue, POCA36 glue etc.The thickness of photoresists protection piece 30 can be 1 μ m～3 μ m.
As seen from Figure 2, electrode layer 20 also comprises the lead-in wire zone 28 that is electrically connected with first direction electrode 22 and second direction electrode 24 respectively.
In conjunction with Fig. 2 and Fig. 3, as can be seen, the lead-in wire zone 28 of the capacitive touch screen shown in Fig. 3 is coated with photoresists protection piece 30.Can prevent lead-in wire zone 28 to be exposed to the external world like this and by air corrosion.
The preparation method of above-mentioned capacitive touch screen as shown in Figure 5 comprises the steps:
S10, provide the substrate 10 that deposits electrode layer 20.
As shown in Figure 3, electrode layer 20 comprises first direction electrode 22, second direction electrode 24 and a plurality of connecting bridge 26.First direction electrode 22 separates and keeps insulation by a plurality of connecting bridges 26 with second direction electrode 24.
The material of first direction electrode 22 and second direction electrode 24 can be ITO, and connecting bridge 26 can be MoAlMo electric bridge or ITO electric bridge.
S20, photoresists are uniformly coated on the electrode layer 20 of substrate 10.
The material of photoresists can be Organic (organic insulator), and concrete can be photosensitive type epoxy resin POCA37 glue, POCA36 glue etc.
The photoresists of S30, exposure connecting bridge 26 positions, remainder covers, and the photoresists that obtain arranging and covering at interval on the connecting bridge 26 are protected piece 30.
Can adopt the mask mask that the photoresists of connecting bridge 26 positions are come out; remainder covers, and in the time of through exposure machine, exposure light is partly blocked; only stay the photoresists exposure of connecting bridge 26 positions, only demonstrate the photoresists protection piece 30 that arranges at interval after the development.
The thickness of photoresists protection piece 30 can be 1 μ m～3 μ m.
In preferred embodiment, the photoresists of regional 28 positions that go between also are exposed, and obtain covering the photoresists protection piece 30 (as shown in Figure 3) in lead-in wire zone 28 after the development.
S40, remove unexposed photoresists, obtain capacitive touch screen.
Remove unexposed photoresists, obtain capacitive touch screen as shown in Figure 2.Unexposed photoresists can reclaim the back recycling.
The above embodiment has only expressed one or more embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a capacitive touch screen is characterized in that, comprises substrate, is arranged on the electrode layer on the described substrate surface and is arranged on a plurality of photoresists protection pieces on the described electrode layer;
Described electrode layer comprises first direction electrode, second direction electrode and a plurality of connecting bridge, and described first direction electrode and described second direction electrode separate and keep insulation by a plurality of described connecting bridges;
Described a plurality of photoresists protections block gap is arranged on the described electrode layer, and covers described connecting bridge.
2. capacitive touch screen as claimed in claim 1 is characterized in that, described photoresists protection piece is corresponding one by one with described connecting bridge.
3. capacitive touch screen as claimed in claim 1 is characterized in that, each described photoresists protection piece covers at least two described connecting bridges.
4. capacitive touch screen as claimed in claim 1 is characterized in that, described photoresists protection piece is rectangle, square, circle or oval.
5. capacitive touch screen as claimed in claim 1 is characterized in that, the material of described photoresists protection piece is organic insulator.
6. capacitive touch screen as claimed in claim 1 is characterized in that, the thickness of described photoresists protection piece is 1 μ m～3 μ m.
7. capacitive touch screen as claimed in claim 1 is characterized in that, described connecting bridge is MoAlMo electric bridge or ITO electric bridge.
8. capacitive touch screen as claimed in claim 1 is characterized in that, the material of described first direction electrode and second direction electrode is ITO.
9. capacitive touch screen as claimed in claim 1 is characterized in that, described electrode layer also comprises the lead-in wire zone that is electrically connected with described first direction electrode and described second direction electrode respectively, and described lead-in wire zone is coated with photoresists protection piece.
10. the preparation method as each described capacitive touch screen in the claim 1～9 is characterized in that, comprises the steps:
Step 1, provide the substrate that deposits electrode layer; Described electrode layer comprises first direction electrode, second direction electrode and connecting bridge, and described first direction electrode and described second direction electrode separate and keep insulation by described connecting bridge;
Step 2, photoresists are uniformly coated on the electrode layer of described substrate;
Step 3, exposure expose the photoresists of described connecting bridge position, and remainder covers, and the photoresists that obtain arranging and covering at interval on the described connecting bridge are protected piece;
Step 4, remove unexposed photoresists on the substrate, obtain described capacitive touch screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210008598.XA CN103207710B (en) | 2012-01-11 | 2012-01-11 | Capacitive touch screen and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210008598.XA CN103207710B (en) | 2012-01-11 | 2012-01-11 | Capacitive touch screen and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103207710A true CN103207710A (en) | 2013-07-17 |
| CN103207710B CN103207710B (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210008598.XA Expired - Fee Related CN103207710B (en) | 2012-01-11 | 2012-01-11 | Capacitive touch screen and preparation method thereof |
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| CN (1) | CN103207710B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106896971A (en) * | 2017-03-16 | 2017-06-27 | 深圳市骏达光电股份有限公司 | The manufacturing process of touch-screen |
| CN108021268A (en) * | 2016-10-28 | 2018-05-11 | 乐金显示有限公司 | Touch sensor integrated-type display device |
| CN109581716A (en) * | 2019-01-24 | 2019-04-05 | 京东方科技集团股份有限公司 | Display base plate, display panel and mask plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699378A (en) * | 2009-09-23 | 2010-04-28 | 深超光电（深圳）有限公司 | Touch panel and manufacturing method thereof |
| JP2011040028A (en) * | 2009-08-07 | 2011-02-24 | Ritdisplay Corp | Capacitive touch panel |
| CN102116954A (en) * | 2011-03-17 | 2011-07-06 | 信利半导体有限公司 | Capacitance-type touch screen displayer |
| CN202433880U (en) * | 2012-01-11 | 2012-09-12 | 中国南玻集团股份有限公司 | Capacitive touch screen |
-
2012
- 2012-01-11 CN CN201210008598.XA patent/CN103207710B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011040028A (en) * | 2009-08-07 | 2011-02-24 | Ritdisplay Corp | Capacitive touch panel |
| CN101699378A (en) * | 2009-09-23 | 2010-04-28 | 深超光电（深圳）有限公司 | Touch panel and manufacturing method thereof |
| CN102116954A (en) * | 2011-03-17 | 2011-07-06 | 信利半导体有限公司 | Capacitance-type touch screen displayer |
| CN202433880U (en) * | 2012-01-11 | 2012-09-12 | 中国南玻集团股份有限公司 | Capacitive touch screen |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108021268A (en) * | 2016-10-28 | 2018-05-11 | 乐金显示有限公司 | Touch sensor integrated-type display device |
| CN108021268B (en) * | 2016-10-28 | 2020-12-01 | 乐金显示有限公司 | Touch sensor integrated type display device |
| CN106896971A (en) * | 2017-03-16 | 2017-06-27 | 深圳市骏达光电股份有限公司 | The manufacturing process of touch-screen |
| CN109581716A (en) * | 2019-01-24 | 2019-04-05 | 京东方科技集团股份有限公司 | Display base plate, display panel and mask plate |
| WO2020151351A1 (en) * | 2019-01-24 | 2020-07-30 | 京东方科技集团股份有限公司 | Display substrate and method for manufacturing same, display panel, and mask plate |
| US11275264B2 (en) | 2019-01-24 | 2022-03-15 | Chongqing Boe Optoelectronics Technology Co., Ltd. | Display substrate, manufacturing method thereof, display panel and mask plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103207710B (en) | 2016-05-04 |
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Effective date of registration: 20160127 Address after: 443005 No. 38, Dalian Road, Yichang, Hubei Applicant after: YICHANG NANBO DISPLAY DEVICES CO., LTD. Address before: 518057 Guangdong Province, Shenzhen high tech Zone of Nanshan District City, North Industrial Zone No. three road, CSG electronics building five floor Applicant before: Shenzhen New Horizons Optoelectronic Technology Co., Ltd. |
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Granted publication date: 20160504 Termination date: 20210111 |
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