CN103207710B - Capacitive touch screen and preparation method thereof - Google Patents
Capacitive touch screen and preparation method thereof Download PDFInfo
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- CN103207710B CN103207710B CN201210008598.XA CN201210008598A CN103207710B CN 103207710 B CN103207710 B CN 103207710B CN 201210008598 A CN201210008598 A CN 201210008598A CN 103207710 B CN103207710 B CN 103207710B
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- photoresists
- electrode
- protection piece
- direction electrode
- electrode layer
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Abstract
The invention discloses a kind of capacitive touch screen, comprise substrate, be arranged on the electrode layer on described substrate surface and be arranged on the multiple photoresists protection pieces on described electrode layer; Described electrode layer comprises first direction electrode, second direction electrode and multiple connecting bridge, and described first direction electrode and described second direction electrode separate and keep insulation by multiple described connecting bridges; Described multiple photoresists protections block gap is arranged on described electrode layer, and covers described connecting bridge. This capacitive touch screen is by adopting spaced photoresists protection block protection to play the connecting bridge of key function, with traditional SIO2Justifying protection is compared, and insulating properties are better. The present invention also provides a kind of preparation method of above-mentioned capacitive touch screen.
Description
[technical field]
The present invention relates to 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 the emerging input information mode of one and shows product,As touch-screen mobile phone, GPS navigation system etc.
The electrode layer of traditional capacitive touch screen adopts SIO2Justifying protection. But, use SIO2Guard electrodeLayer insulating properties is poor.
[summary of the invention]
Based on this, be necessary to provide good capacitive touch screen of a kind of insulating properties and preparation method thereof.
A kind of capacitive touch screen, comprises substrate, is arranged on electrode layer and setting on described substrate surfaceMultiple photoresists protection pieces on described electrode layer;
Described electrode layer comprises first direction electrode, second direction electrode and multiple connecting bridge, described firstDirection electrode and described second direction electrode separate and keep insulation by multiple described connecting bridges;
Described multiple photoresists protections block gap is arranged on 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 respectively and described first direction electrode and described second direction electrodeThe lead-in wire region of electrical connection, described lead-in wire region is coated with photoresists protection piece.
A preparation method for above-mentioned capacitive touch screen, comprises the steps:
Step 1, provide the substrate that deposits electrode layer; Described electrode layer comprises first direction electrode, secondDirection electrode and connecting bridge, described first direction electrode and described second direction electrode are by described connecting bridgeSeparate and keep insulation;
Step 2, photoresists are uniformly coated on the electrode layer of described substrate;
Step 3, exposure are by the photoresists exposure of described connecting bridge position, and remainder covers, and obtains intervalArrange and cover the photoresists protection piece on described connecting bridge;
Step 4, remove unexposed photoresists on substrate, obtain described capacitive touch screen.
This capacitive touch screen is by adopting spaced photoresists protection block protection to play key functionConnecting bridge, with traditional SIO2Justifying protection is compared, and insulating properties are better.
[brief description of the drawings]
Fig. 1 is the generalized 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 schematic diagram that the lead-in wire region of capacitive touch screen as shown in Figure 2 covers photoresists protection piece;
Fig. 4 is capacitive touch screen as shown in Figure 1 front schematic view when photoresists protection piece is not set;
Fig. 5 is the preparation flow figure of the capacitive touch screen of an embodiment.
[detailed description of the invention]
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.In accompanying drawing, provide preferred embodiment of the present invention. But the present invention can come real in many different formsExisting, be not limited to embodiment described herein. On the contrary, providing the object of these embodiment is to make thisThe understanding of disclosure of an invention content is more comprehensively thorough.
It should be noted that, when element is called as " being fixed on " another element, it can be directly at anotherOn individual element or also can have an element placed in the middle. When an element is considered to " connection " another yuanPart, it can be directly connected to another element or may have centering elements simultaneously. Use hereinTerm " vertical ", " level ", " left side ", " right side " and the similar just order in order to illustrate of statement.
Unless otherwise defined, all technology and the scientific terminology using herein and belong to technology of the present inventionThe implication that the technical staff in field understands is conventionally identical. The art using in description of the present invention hereinLanguage, just in order to describe the object of specific embodiment, is not intended to be restriction the present invention. Use hereinTerm " and/or " comprise one or more relevant Listed Items arbitrarily with all combinations.
The employing SIO of traditional capacitive touch screen2Justifying protection. But, use SIO2The insulation of guard electrode layerProperty is poor.
Based on this, be necessary to provide good capacitive touch screen of a kind of insulating properties and preparation method thereof.
As shown in Figure 1, the capacitive touch screen of an embodiment comprises substrate 10, is arranged on substrate 10 surfacesOn electrode layer 20 and be arranged on the multiple photoresists protection pieces 30 on electrode layer 20.
In conjunction with Fig. 2 and Fig. 4, electrode layer 20 comprise first direction electrode 22, second direction electrode 24 andMultiple connecting bridges 26. First direction electrode 22 and second direction electrode 24 vertical setting mutually, andSeparate and keep mutually insulated by multiple connecting bridges 26.
In present embodiment, photoresists protection piece 30 is rectangle. In other embodiment, photoresists are protectedProtecting piece 30 can also be square, circular or oval.
By comparison diagram 2 and Fig. 4, can clearly find out, multiple photoresists protection pieces 30 are disposed onOn electrode layer 20, and cover connecting bridge 26.
In present embodiment, photoresists protection piece 30 is corresponding one by one with connecting bridge 26. , each photoresistsProtection piece 30 covers and only covers a connecting bridge 26.
In other embodiment, each photoresists protection piece 30 can cover two, three or moreConnecting bridge 26. Each photoresists protection piece 30 covers multiple connecting bridges 26 can simplify preparation technology on the one hand,On the other hand, the tack of photoresists protection piece 30 is also higher.
This capacitive touch screen is by adopting 30 protections of spaced photoresists protection piece to play key functionConnecting bridge 26, with traditional SIO2Justifying protection is compared, and insulating properties are better.
In addition, compared with the capacitive touch screen that adopts the protection of justifying photoresists with electrode layer, due to justifying sensitizationGlue protection cost is higher, easily produces the open defects such as bubble, residual, color spot, MURA, sees through simultaneouslyRate is lower, and adopts 30 protections of spaced photoresists protection piece to play the connecting bridge 26 of key function, noOnly reduced cost, greatly improved open defect, transmitance is enhanced simultaneously.
The good insulation preformance of this capacitive touch screen, transmitance can exceed 90% simultaneously, greatly improves goodRate, reduces production costs.
Substrate 10 can adopt general soda-lime glass, can be also other materials.
The material of first direction electrode 22 and second direction electrode 24 can be ITO, and connecting bridge 26 can beMoAlMo electric bridge or ITO electric bridge.
The material of photoresists protection piece 30 can be Organic (organic insulator), can select photosensitive type epoxyResin 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 respectively and first direction electrode 22 and second direction electricityThe lead-in wire region 28 that the utmost point 24 is electrically connected.
In conjunction with Fig. 2 and Fig. 3, can find out, the lead-in wire region 28 of the capacitive touch screen shown in Fig. 3 is coveredBe stamped photoresists protection piece 30. Can preventing from like this going between, region 28 is exposed to the external world 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 multipleConnecting bridge 26. First direction electrode 22 is separated and is kept by multiple connecting bridges 26 with second direction electrode 24Insulation.
Substrate 10 can adopt general soda-lime glass, can be also other materials.
The material of first direction electrode 22 and second direction electrode 24 can be ITO, and connecting bridge 26 can beMoAlMo 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 resinPOCA37 glue, POCA36 glue etc.
The photoresists of S30, exposure connecting bridge 26 positions, remainder covers, and obtains interval and arranges and coverPhotoresists protection piece 30 on connecting bridge 26.
Can adopt mask mask that the photoresists of connecting bridge 26 positions are come out, remainder covers,Through exposure machine time, exposure light is partly blocked, and only leaves the photoresists exposure of connecting bridge 26 positions,After development, only demonstrate spaced photoresists protection piece 30.
The thickness of photoresists protection piece 30 can be 1 μ m～3 μ m.
In a preferred embodiment, the photoresists of lead-in wire 28 positions, region are also exposed, and after development, are coveredThe photoresists protection pieces 30 (as shown in Figure 3) in lid lead-in wire region 28.
S40, remove unexposed photoresists, obtain capacitive touch screen.
Remove unexposed photoresists, obtain capacitive touch screen as shown in Figure 2. Unexposed photoresists canTo reclaim rear recycling.
The above embodiment has only expressed one or more embodiments of the present invention, and its description is comparatively concreteIn detail, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention. It is right to it should be pointed out thatIn those of ordinary skill in the art, without departing from the inventive concept of the premise, if can also makeDry distortion and improvement, these all belong to protection scope of the present invention. Therefore, the protection domain of patent of the present inventionShould be as the criterion with claims.
Claims (2)
1. a capacitive touch screen, is characterized in that, comprises substrate, is arranged on described substrate surfaceElectrode layer and the multiple photoresists that are arranged on described electrode layer are protected pieces;
Described electrode layer comprises first direction electrode, second direction electrode and multiple connecting bridge, described firstDirection electrode and described second direction electrode separate and keep insulation by multiple described connecting bridges;
Described multiple photoresists protections block gap is arranged on described electrode layer, and covers described connecting bridge;
Each described photoresists protection piece covers at least two described connecting bridges;
The material of described photoresists protection piece is organic insulator; The material of described photoresists protection piece is sensitizationType epoxy resin POCA37 glue or POCA36 glue;
The thickness of described photoresists protection piece is 1 μ m～3 μ m;
Described electrode layer also comprises and being electrically connected with described first direction electrode and described second direction electrode respectivelyLead-in wire region, described lead-in wire region is coated with photoresists protection piece;
Described photoresists protection piece is circular or oval;
Described connecting bridge is MoAlMo electric bridge;
The material of described first direction electrode and second direction electrode is ITO.
2. a preparation method for capacitive touch screen as claimed in claim 1, is characterized in that, comprisesFollowing steps:
Step 1, provide the substrate that deposits electrode layer; Described electrode layer comprises first direction electrode, secondDirection electrode and connecting bridge, described first direction electrode and described second direction electrode are by described connecting bridgeSeparate and keep insulation;
Step 2, photoresists are uniformly coated on the electrode layer of described substrate;
Step 3, exposure are by the photoresists exposure of described connecting bridge position, and remainder covers, and obtains intervalArrange and cover the photoresists protection piece on described connecting bridge;
Step 4, remove unexposed photoresists on substrate, obtain described capacitive touch screen;
Each described photoresists protection piece covers at least two described connecting bridges;
The material of described photoresists protection piece is organic insulator; The material of described photoresists protection piece is sensitizationType epoxy resin POCA37 glue or POCA36 glue;
The thickness of described photoresists protection piece is 1 μ m～3 μ m;
Described electrode layer also comprises and being electrically connected with described first direction electrode and described second direction electrode respectivelyLead-in wire region, described lead-in wire region is coated with photoresists protection piece;
Described photoresists protection piece is circular or oval;
Described connecting bridge is MoAlMo electric bridge;
The material of described first direction electrode and second direction electrode is ITO.
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 CN103207710A (en) | 2013-07-17 |
| CN103207710B true 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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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102571357B1 (en) * | 2016-10-28 | 2023-08-28 | 엘지디스플레이 주식회사 | 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 |
| CN109581716B (en) | 2019-01-24 | 2021-11-23 | 京东方科技集团股份有限公司 | Display substrate, 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103207710A (en) | 2013-07-17 |
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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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