CN102156600A - Capacitive touch screen and manufacturing method thereof, and touch display device - Google Patents
Capacitive touch screen and manufacturing method thereof, and touch display device Download PDFInfo
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- CN102156600A CN102156600A CN2011100994155A CN201110099415A CN102156600A CN 102156600 A CN102156600 A CN 102156600A CN 2011100994155 A CN2011100994155 A CN 2011100994155A CN 201110099415 A CN201110099415 A CN 201110099415A CN 102156600 A CN102156600 A CN 102156600A
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- regulating course
- touch screen
- capacitive touch
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Abstract
The invention discloses a capacitive touch screen and a manufacturing method thereof, and a touch display device. The capacitive touch screen comprises a cover board, decoration patterns formed on the upper surface of the cover board, a leveling layer covered on the cover board and the decoration patterns, and a sensing layer formed on the leveling layer; the upper surface of the leveling layer is flat; and a driving line and a sensing line are formed in the sensing layer. As the sensing layer is manufactured on the leveling layer of the cover board directly, a sensing panel is not needed; therefore, the thickness of the capacitive touch screen is reduced greatly, the interface is decreased, and the light permeation rate is increased.
Description
Technical field
The present invention relates to the electronic apparatus technical field, particularly relate to capacitive touch screen and manufacture method and touch display spare.
Background technology
Touch-screen is a kind of simple, convenient, natural input equipment, is widely used on the various portable sets, as mobile phone, PDA (Personal Digital Assistant, personal digital assistant) etc.
Existing inductance capacitance formula touch-screen adopts structure shown in Figure 1 more, comprises successively: cover plate 1 ', optical cement 2 ' and induction panel 3 '; Referring to Fig. 2, cover plate 1 ' is formed with decorative pattern 10 ' towards the one side of optical cement, and induction panel 3 ' is formed with sensing layer 30 ' towards the one side of optical cement, is formed with the drive wire and the line of induction in the described sensing layer 30 '.Cover plate 1 ' and induction panel 3 ' bond together by optical cement 2 ', optical cement can be OCA (optical clear adhesive, the optical clear adhesive tape) or bonding agent such as liquid optical cement, cover plate 1 ' and induction panel 3 ' are generally has certain thickness glass plate.
But, above-mentioned some capacitive touch screen needs an induction panel 3 ' that plays the carrying effect when sensing layer 30 ' is made, cause the thickness of capacitive touch screen to increase, be unfavorable for the development trend of touch-screen slimming, and the blocked up meeting of touch-screen thickness causes the reduction of transmittance.
Summary of the invention
The purpose of this invention is to provide a kind of capacitive touch screen and manufacture method and touch display spare, to reduce the thickness of capacitive touch screen.
At first, the invention provides a kind of capacitive touch screen, described capacitive touch screen comprises:
Cover plate is formed on the decorative pattern of cover plate upper surface, covers the regulating course on cover plate and the decorative pattern, and is formed on the sensing layer on the regulating course; The upper surface of described regulating course is smooth, is formed with the drive wire and the line of induction in the described sensing layer.
Preferably, described regulating course can adopt spin coating or sputtering process to form.
Concrete, the material of described regulating course can be organic transparent insulation material or SiO
2
If the material of described regulating course is organic transparent insulation material, the thickness of then described smooth regulating course can be 1～2 μ m; If the material of described regulating course is SiO
2, the thickness of then described smooth regulating course can for
Preferably, described capacitive touch screen also is formed with protective seam on sensing layer.
Preferably, the material of described protective seam is SiO
2
Secondly, the invention provides a kind of manufacture method of capacitive touch screen, comprising:
One cover plate is provided;
Upper surface at described cover plate forms decorative pattern;
On cover plate and decorative pattern, cover regulating course, and the upper surface of described regulating course is carried out planarization;
On smooth regulating course, form sensing layer, be formed with the drive wire and the line of induction in the described sensing layer.
Preferably, described regulating course adopts spin coating or sputtering process to form.
Concrete, the material of described regulating course can be organic transparent insulation material or SiO
2
If the material of described regulating course is organic transparent insulation material, the thickness of then described smooth regulating course can be 1～2 μ m; If the material of described regulating course is SiO
2, the thickness of then described smooth regulating course can for
Preferably, described method also comprises: form protective seam on sensing layer.
Preferably, the material of described protective seam is SiO
2
At last, the invention provides a kind of touch display spare, described touch display spare comprises display screen and aforesaid capacitive touch screen, and described capacitive touch screen is bonded on the described display screen.
Capacitive touch screen of the present invention and manufacture method and touch display spare, because capacitive touch screen wherein directly is produced on sensing layer on the regulating course of cover plate, need not use induction panel, greatly reduces the thickness of capacitive touch screen, reduce interface, improved transmittance; And saved the bonding step of optical cement, simplified the technological process of production.
Description of drawings
Fig. 1 is the decomposition texture schematic perspective view of existing capacitive touch screen;
Fig. 2 is the schematic cross-section of existing capacitive touch screen;
Fig. 3 is the schematic cross-section of capacitive touch screen of the present invention;
Fig. 4 is the schematic flow sheet of the method for making of capacitive touch screen of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the embodiment of the invention is described in further detail below in conjunction with the drawings and specific embodiments.
Embodiment one
Present embodiment provides a kind of capacitive touch screen, as shown in Figure 3, described capacitive touch screen comprises: cover plate 1 is formed on the decorative pattern 2 of cover plate 1 upper surface, cover the regulating course 3 on cover plate 1 and the decorative pattern 2, and be formed on the sensing layer 4 on the regulating course 3; The upper surface of described regulating course 3 is smooth, is formed with the drive wire and the line of induction in the described sensing layer 4.
The material of cover plate 1 can be glass, PC (polycarbonate), PMMA (polymethylmethacrylate) etc., and shape can be determined according to the bonding display screen of want.
The material of decorative pattern 2 can be shading class material, as chromium, chromium oxide or printing ink etc., its pattern can be set according to actual needs, decorative pattern 2 is except decorating, can also block the metal routing and the FPC (Flexible Printed Circuit, flexible print circuit) at cover plate 1 back side (being upper surface one side).
Because decorative pattern 2 can protrude in the plane of cover plate 1 upper surface, directly depositing ITO (tin indium oxide) layer may the highly position formation tomography of step occur at decorative pattern 2 and cover plate 1, causes electrical contact performance bad.Therefore, the present invention can cover a regulating course 3 on cover plate 1 and decorative pattern 2, and regulating course 3 has been eliminated the height step between decorative pattern 2 and the cover plate 1; The upper surface of described regulating course 3 is smooth, can pass through CMP means such as (Chemical Mechanical Polishing, cmps) and realize, for follow-up sensing layer 4 provides a smooth surface.Described regulating course 3 can adopt spin coating or sputtering process to form, and material can be organic transparent insulation material or SiO
2If the material of described regulating course 3 is organic transparent insulation material, the thickness of then described smooth regulating course 3 is 1～2 μ m; If the material of described regulating course 3 is SiO
2, the thickness of then described smooth regulating course 3 is
Can get final product greater than the height step between decorative pattern 2 and the cover plate 1.The thickness of the regulating course of indication in the utility model all refers to the regulating course thickness between regulating course 3 upper surfaces and cover plate 1 back side.
Afterwards, on regulating course 3, form sensing layer 4, be formed with the drive wire and the line of induction in the described sensing layer 4.
The forming process of the drive wire and the line of induction can be:
1) deposition the one ITO layer on regulating course, pattern etch the one ITO layer according to drive wire obtains drive wire; At drive wire and regulating course surface deposition insulating medium layer (as SiO
2, SiN etc.), and insulating medium layer carried out planarization (for example CMP) obtain smooth insulating medium laminar surface; At smooth insulating medium layer surface deposition the 2nd ITO layer, pattern etch the 2nd ITO layer according to the line of induction obtains the line of induction.
Also can be: 2) deposition ITO layer on regulating course according to the pattern etch ITO layer of the elementary drive wire and the elementary line of induction, obtains the elementary drive wire and the elementary line of induction (the elementary drive wire and the elementary line of induction are substantially parallel); At elementary drive wire, the elementary line of induction and regulating course surface deposition insulating medium layer, and insulating medium layer is carried out planarization obtain smooth insulating medium laminar surface; Some some position corresponding with elementary drive wire/elementary line of induction at the insulating medium laminar surface etches via hole, deposits many parallel ITO lines connections via hole separately, drive wire that obtains being perpendicular to one another and sweep trace.
The mode of the formation drive wire and the line of induction has multiple, and the present invention does not do qualification to this.
Described capacitive touch screen preferably also is formed with protective seam 5 on sensing layer, described protective layer material can be SiO
2
The capacitive touch screen of present embodiment need not use induction panel owing to directly sensing layer is produced on the regulating course of cover plate, greatly reduces the thickness of capacitive touch screen, has reduced interface, has improved transmittance; And saved the bonding step of optical cement, simplified the technological process of production.
The capacitive touch screen of prior art is by optical cement cover plate and induction panel to be bonded together, requirement to attaching process is very high, but the applying off normal appears easily, form the off normal step between cover plate and the induction panel, the frame of decorative pattern will be widened to reach beautiful visual effects thus, still is unfavorable for the application demand of narrow limitization.In addition, prior art also exists and is prone to defectives such as bubble, interior dirt, Newton ring and sensing layer and cover plate be not parallel.
The capacitive touch screen of present embodiment, directly sensing layer is produced on the regulating course of cover plate, the problem that does not exist contraposition to fit, off normal step between cover plate and the induction panel can not appear yet, therefore the frame of decorative pattern can further narrow, and increases the useful area ratio of capacitive touch screen; And the problem of bubble, interior dirt can not appear; Because regulating course has been filled the space between cover plate, decorative pattern and the sensing layer, has played good supporting and smooth effect, therefore can avoid appearance and the sensing layer and the uneven problem of cover plate of Newton ring.
Embodiment two
Present embodiment provides a kind of manufacture method of capacitive touch screen, as shown in Figure 4, comprises the steps:
S10 provides a cover plate.
The material of cover plate can be glass, PC, PMMA etc., and shape can be determined according to the bonding display screen of want.
S20 is at the upper surface formation decorative pattern of described cover plate.
The material of decorative pattern can be for shading class material, as chromium, chromium oxide or printing ink etc., if chromium, chromium oxide then can adopt the technology of sputter to form, thickness can for
About, if printing ink can adopt the method for silk-screen to form, thickness can be for about 10 μ m.Its pattern can be set according to actual needs.
S30 covers regulating course on cover plate and decorative pattern, and the upper surface of described regulating course is carried out planarization.
The present invention eliminates the height step between decorative pattern and the cover plate by cover regulating course on cover plate and decorative pattern, can realize the smooth of regulating course upper surface by means such as CMP afterwards, for follow-up sensing layer provides a smooth surface.Described regulating course can adopt spin coating or sputtering process to form, and material can be organic transparent insulation material or SiO
2, if the material of described regulating course is organic transparent insulation material, the thickness of then described smooth regulating course is 1～2 μ m; If the material of described regulating course is SiO
2, the thickness of then described smooth regulating course is
Can get final product greater than the height step between decorative pattern and the cover plate.
S40 forms sensing layer on smooth regulating course, be formed with the drive wire and the line of induction in the described sensing layer.
Preferably, can also comprise: S50, on sensing layer, form protective seam, the material of described protective seam can be Si0
2, the technology of formation mainly is sputter.
The capacitive touch screen of present embodiment need not use induction panel owing to directly sensing layer is produced on the regulating course of cover plate, greatly reduces the thickness of capacitive touch screen, has reduced interface, has improved transmittance; And saved the bonding step of optical cement, simplified the technological process of production.In addition, the off normal step between cover plate and the induction panel can not appear in the problem that the capacitive touch screen of present embodiment does not exist contraposition to fit yet, so the frame of decorative pattern can further narrow the useful area ratio of increase capacitive touch screen; The problem that bubble, interior dirt can not occur; Because regulating course has been filled the space between cover plate, decorative pattern and the sensing layer, has played good supporting and smooth effect, therefore can avoid appearance and the sensing layer and the uneven problem of cover plate of Newton ring.
Embodiment three
Present embodiment provides a kind of touch display spare, and described touch display spare comprises display screen and as embodiment one described capacitive touch screen, described capacitive touch screen is bonded on the described display screen, for example can be undertaken bonding by optical cement.
Capacitive touch screen in the touch display spare of present embodiment directly is produced on sensing layer on the regulating course of cover plate, need not use induction panel, greatly reduces the thickness of capacitive touch screen, has reduced interface, has improved transmittance; And saved the bonding step of optical cement, simplified the technological process of production.
Because the similar content of embodiment two and embodiment three and embodiment one is more, therefore introduction is simpler, and relevant part sees also embodiment one, repeats no more herein.
Need to prove, in this article, relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint and have the relation of any this reality or in proper order between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as this process, method, article or equipment intrinsic key element.Do not having under the situation of more restrictions, the key element that limits by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all be included in protection scope of the present invention.
Claims (13)
1. a capacitive touch screen is characterized in that, described capacitive touch screen comprises:
Cover plate is formed on the decorative pattern of cover plate upper surface, covers the regulating course on cover plate and the decorative pattern, and is formed on the sensing layer on the regulating course; The upper surface of described regulating course is smooth, is formed with the drive wire and the line of induction in the described sensing layer.
2. capacitive touch screen as claimed in claim 1 is characterized in that, described regulating course adopts spin coating or sputtering process to form.
3. capacitive touch screen as claimed in claim 1 is characterized in that, the material of described regulating course is organic transparent insulation material or SiO
2
4. capacitive touch screen as claimed in claim 3 is characterized in that, if the material of described regulating course is organic transparent insulation material, the thickness of then described smooth regulating course is 1～2 μ m; If the material of described regulating course is SiO
2, the thickness of then described smooth regulating course is
5. as each described capacitive touch screen of claim 1-4, it is characterized in that described capacitive touch screen also is formed with protective seam on sensing layer.
6. capacitive touch screen as claimed in claim 5 is characterized in that, the material of described protective seam is SiO
2
7. the manufacture method of a capacitive touch screen is characterized in that, comprising:
One cover plate is provided;
Upper surface at described cover plate forms decorative pattern;
On cover plate and decorative pattern, cover regulating course, and the upper surface of described regulating course is carried out planarization;
On smooth regulating course, form sensing layer, be formed with the drive wire and the line of induction in the described sensing layer.
8. method as claimed in claim 7 is characterized in that, described regulating course adopts spin coating or sputtering process to form.
9. method as claimed in claim 7 is characterized in that, the material of described regulating course is organic transparent insulation material or SiO
2
10. method as claimed in claim 9 is characterized in that, if the material of described regulating course is organic transparent insulation material, the thickness of then described smooth regulating course is 1～2 μ m; If the material of described regulating course is SiO
2, the thickness of then described smooth regulating course is
11. as each described method of claim 7-10, it is characterized in that, also comprise: on sensing layer, form protective seam.
12. method as claimed in claim 11 is characterized in that, the material of described protective seam is SiO
2
13. a touch display spare is characterized in that, described touch display spare comprises display screen and as each described capacitive touch screen of claim 1-6, described capacitive touch screen is bonded on the described display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100994155A CN102156600A (en) | 2011-04-20 | 2011-04-20 | Capacitive touch screen and manufacturing method thereof, and touch display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100994155A CN102156600A (en) | 2011-04-20 | 2011-04-20 | Capacitive touch screen and manufacturing method thereof, and touch display device |
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| CN102156600A true CN102156600A (en) | 2011-08-17 |
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ID=44438115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100994155A Pending CN102156600A (en) | 2011-04-20 | 2011-04-20 | Capacitive touch screen and manufacturing method thereof, and touch display device |
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Cited By (6)
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| CN102508584A (en) * | 2011-09-30 | 2012-06-20 | 汕头超声显示器（二厂）有限公司 | Monolithic capacitance touch screen with decorative patterns and manufacture method thereof |
| CN102831827A (en) * | 2012-08-27 | 2012-12-19 | 深圳市华星光电技术有限公司 | Display device |
| CN104123045A (en) * | 2013-04-28 | 2014-10-29 | 北京京东方光电科技有限公司 | Touch screen, liquid-crystal display device and infrared material surface modification method |
| CN104583918A (en) * | 2012-08-23 | 2015-04-29 | 旭硝子株式会社 | Sensor-integrated cover glass |
| CN105116580A (en) * | 2015-08-21 | 2015-12-02 | 昆山龙腾光电有限公司 | Touch display panel and method for attaching panel covering glass to liquid crystal panel |
| WO2016169367A1 (en) * | 2015-04-20 | 2016-10-27 | 京东方科技集团股份有限公司 | Touch substrate and manufacturing method therefor, and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102508584A (en) * | 2011-09-30 | 2012-06-20 | 汕头超声显示器（二厂）有限公司 | Monolithic capacitance touch screen with decorative patterns and manufacture method thereof |
| CN104583918A (en) * | 2012-08-23 | 2015-04-29 | 旭硝子株式会社 | Sensor-integrated cover glass |
| CN102831827A (en) * | 2012-08-27 | 2012-12-19 | 深圳市华星光电技术有限公司 | Display device |
| CN102831827B (en) * | 2012-08-27 | 2014-06-11 | 深圳市华星光电技术有限公司 | Display device |
| CN104123045A (en) * | 2013-04-28 | 2014-10-29 | 北京京东方光电科技有限公司 | Touch screen, liquid-crystal display device and infrared material surface modification method |
| WO2014176849A1 (en) * | 2013-04-28 | 2014-11-06 | 北京京东方光电科技有限公司 | Touchscreen, liquid crystal display apparatus, and infrared material surface modification method |
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| CN105116580A (en) * | 2015-08-21 | 2015-12-02 | 昆山龙腾光电有限公司 | Touch display panel and method for attaching panel covering glass to liquid crystal panel |
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Address after: 516600 Guangdong Industrial Zone, Shanwei City Road, Lee Lee Industrial City, a district of the building fifteenth Applicant after: Truly Opto-Electronics Ltd. Address before: 516600, Guangdong City, Shanwei Province Industrial Road, Xinli electronic industrial city Applicant before: Truly Semiconductors (Shanwei) Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: TRULY OPTO-ELECTRONICS LIMITED TO: TRULY OPTO-ELECTRONICS LTD. |
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Application publication date: 20110817 |