CN203338327U - Improved optical guidance system (OGS) touch screen - Google Patents
Improved optical guidance system (OGS) touch screen Download PDFInfo
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- CN203338327U CN203338327U CN2013202496515U CN201320249651U CN203338327U CN 203338327 U CN203338327 U CN 203338327U CN 2013202496515 U CN2013202496515 U CN 2013202496515U CN 201320249651 U CN201320249651 U CN 201320249651U CN 203338327 U CN203338327 U CN 203338327U
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Abstract
The utility model provides an improved optical guidance system (OGS) touch screen, wherein a lamination structure of the improved OGS touch screen comprises a glass cover plate, an ink shading layer, a sensor layer and a shielding electrode layer, wherein the sensor layer is a single side indium tin oxide (ITO) image electrode layer, the shielding electrode layer is arranged on the surface of a second polarizing film of a liquid crystal display (LCD) screen, and a polarizing film is fit with the glass cover plate through transparent optical glue. The improved OGS touch screen can effectively reduce inference of signals of LCD screen to an OGS touch sensor, and improves touch induction sensitivity of a sensor.
Description
Technical field
The utility model relates to the touch screen technology field, relates in particular to a kind of improved OGS touch-screen.
Background technology
Touch-screen is as a kind of intelligentized human-computer interaction interface product, the a lot of fields in social production and life have obtained application more and more widely, especially with the fastest developing speed in consumer electronics sector (as fields such as smart mobile phone, panel computers).
Touch screen technology is of a great variety, mainly comprises resistance-type, condenser type, infrared type, table sound wave type etc.Capacitive touch screen not only shows and is quick on the draw, and support multi-point touch, and the life-span is long, and the maturation along with controlling the IC technology, become mainstream technology in the market.
Ripe capacitive touch screen technology is generally the G+G structure at present, and as shown in Figure 1, inductor (sensor) 13 generally is produced on glass substrate 12 surfaces, then with cover-plate glass 14, fits and forms touch panel, and last and LCD display 11 is fitted.
Monolithic glass capacitance touch screen (One Glass Solution; OGS) technology; mainly for take the touch-screen product that glass is base material; that sensor directly is produced on the cover glass cover plate; as shown in Figure 2; the surface that inductor (sensor) 22 directly is produced on glass cover-plate 23 forms the OGS touch panel, then with LCD display 21, is fitted.With respect to G+G structure (glass cover-plate+glass sensor) touch screen technology of current maturation, the most significant advantage of OGS technology is, the one, reduced the thickness of a glass, and make that the touch-screen product is more lightening, light transmission is better; The 2nd, reduced bonding process one time, make product yield greatly improve, cost of products reduces greatly; The 3rd, adopted single face sensor(without the bridging structure), make the sensor processing procedure become more simple, yield further improves, and cost further reduces.
But, when OGS touch panel and LCD display laminating, because the distance between sensor and LCD display Vcom electrode layer has reduced the distance of a thickness of glass, make the Vcom signal produce larger electricity to sensor and disturb, directly affect the touch sensible sensitivity of OGS touch-screen.
The utility model content
The purpose of this utility model is exactly for the not high technical matters of existing OGS touch-screen touch sensible sensitivity, proposes a kind of improved OGS touch screen structure.
The technical solution adopted in the utility model is:
A kind of improved OGS touch-screen, it is characterized in that: adopt rhythmo structure, rhythmo structure includes glass cover flaggy, printing ink light shield layer, sensor layer and guarded electrode layer successively, described cover-plate glass is chemically toughened glass, the sensor layer is the single face transparent electrode layer, described guarded electrode layer is produced on the second polaroid surface of LCD screen, and purpose is to reduce the LCD signal electricity of OGS touch-screen is disturbed, polaroid and glass cover-plate laminating.
Described improved OGS touch-screen is characterized in that: the direct vacuum sputtering of described sensor layer is produced on the lower surface of glass cover-plate.
Described improved OGS touch-screen is characterized in that: the material of described sensor layer is tin indium oxide (ITO) material.
Described improved OGS touch-screen is characterized in that: described guarded electrode layer is transparent conductive material, can be the materials such as tin indium oxide (ITO), nano metal, carbon nano-tube and single or multiple lift Graphene, also comprises some transparent composite conducting materials.
Described improved OGS touch-screen is characterized in that: described polaroid is by optical lens gelatin and glass cover-plate laminating.
Described improved OGS touch-screen is characterized in that: described glass cover plate surfaces surrounding or four turnings are provided with conductive pole.
The utility model has the advantages that:
With respect to existing technology, the OGS touch-screen that the utility model provides, increased by a guarded electrode layer, effectively shielded the LCD signal electricity of OGS touch-screen sensor is disturbed, the touch sensible sensitivity that has greatly improved the OGS touch-screen; Simultaneously, the guarded electrode layer is less demanding to resistance, can design very thinly, and the light transmission of product can be affected hardly, and guarded electrode layer manufacture craft is simple, and cost is very low, therefore has extraordinary practical value.
The accompanying drawing explanation
Fig. 1 is the structural representation of G+G structure condenser type touch-screen.
Fig. 2 is the structural representation of existing OGS capacitive touch screen.
Fig. 3 is the structural representation of the OGS capacitive touch screen after improving.
Fig. 4 is the structural representation of LCD panel plate
Fig. 5 is the structural representation of polaroid.
Embodiment
For the technical matters that the utility model is solved, technical scheme makes those of ordinary skill in the art clearer, below in conjunction with the accompanying drawing explanation, the utility model is described in further detail.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Paper is LCD panel plate structure once, as shown in Figure 4, panel construction comprises first substrate 41, second substrate 42, liquid crystal layer 43, the first polaroid 44 and the second polaroid 45, wherein, liquid crystal layer 43 is formed between first substrate 41 and second substrate 42, the first polaroid 44 invests the outside surface of first substrate 41, and the second polaroid 45 invests the outside surface of second substrate 42.
A kind of improved OGS touch-screen, as shown in Figure 3, increase by a guarded electrode layer 34, guarded electrode layer 34 is produced on the second polaroid 33 surfaces of LCD screen, and its rhythmo structure comprises glass cover-plate 31, printing ink light shield layer (in figure, nothing shows), sensor layer 32 and guarded electrode layer 34 successively.
The concrete method for making step of improved OGS touch-screen:
1, make the printing ink light shield layer on glass cover-plate 31
At first glass cover-plate 31 is cleaned up, then, by the mode ink for screen printing of serigraphy, finally printing ink is carried out to hot setting, form the printing ink light shield layer.
2, make sensor layer 32 and graphical
Before sensor layer 32 is made, at first cover the organic OC levelling of one deck layer, then utilize the method for vacuum magnetic-control sputtering to make the ito transparent electrode layer, complete the graphical of ITO electrode layer by gluing, exposure, development, etching, the technique such as remove photoresist afterwards.
3, the making of guarded electrode layer 34
The guarded electrode layer will be produced on polaroid 33 surfaces, at first will understand the structure of polaroid, and as shown in Figure 5, polaroid generally comprises middle PVA(polyvinyl alcohol (PVA)) layer 51 and the TAC(Triafol T of both sides) layer 52.Wherein, what play polarization is PVA layer 51; but PVA very easily is hydrolyzed; in order to protect the physical characteristics of light polarizing film; therefore in the both sides of PVA, each compound one deck has high light transmission rate, water-tolerant and has again (TAC) film 52 of certain physical strength to be protected, and this has just formed the polaroid raw sheet.
The square resistance of general guarded electrode layer 34 is between 300 ~ 500 Ω/sqr, and resistance is less demanding.Transparent electrode layer utilizes low temperature process to make, and the transparency electrode layer material is not limit, so long as can be used in the transparency conducting layer of touch-screen, gets final product.Particularly, described transparent electrode layer can be ITO (tin indium oxide) conductive layer, AZO(aluminum zinc oxide) a kind of in conductive layer, nano metal layer, carbon nanotube conducting layer and single or multiple lift graphene conductive layer etc., also comprise some composite transparent conductive materials.
Particularly, described ITO transparency conducting layer can pass through at room temperature vacuum sputtering ito thin film, then carry out vacuum annealing at the temperature allowed, the method (for example adopting volume to volume technique) of the transparent resin printing ink that perhaps utilizes printing to contain the ITO nano particle, and solidify at a certain temperature, to improve rete electric conductivity and adhesion.
Described nano metal layer comprises the materials such as development, nano copper wire, can, by making development or nano copper wire electrically conducting transparent printing ink, then utilize the formation Transparent shielding electrode layer of printing.
Described carbon nanotube conducting layer comprises one or more layers carbon nano-tube periosteum.The carbon nano-tube periosteum comprise a plurality of continuously and the carbon nano-tube fragment aligned, these carbon nano-tube fragments join end to end by Van der Waals force, each carbon nano-tube fragment comprises a plurality of carbon nano-tube that are parallel to each other, and these parallel carbon nano-tube are combined closely by Van der Waals force.In the carbon nano-tube periosteum, carbon nano-tube is arranged of preferred orient in the same direction.
Described carbon nanotube conductive film can be by directly pulling acquisition from carbon nano pipe array.Particularly, at first on the substrates such as quartz, wafer, grow carbon nano pipe array, for example adopt chemical vapor deposition (Chemical Vapor Deposition, CVD) method; Then, utilize stretching technique that carbon nano-tube is pulled out one by one from carbon nano pipe array and form conductive layer pattern.Most of carbon nano-tube that these extend in the same direction and adjacent carbon nano-tube join end to end by Van der Waals force, substantially can guarantee conducting electricity along duct orientation, and insulate in the vertical pipe direction.
4, the laminating of polaroid and OGS touch-screen sensor
Utilize optical lens gelatin (as the OCA optical cement) will fit to the polaroid 33 of guarded electrode layer 34 cover-plate glass 31 lower surfaces with sensor layer 32.Because guarded electrode layer 34 needs ground connection, therefore need to conductive pole be set at the surperficial surrounding of cover-plate glass 31 or four turnings and make upper and lower conducting, conductive pole generally can be made by the method for silk-screen silver slurry.
5, the connection of FPC
To be connected to sensor electrode layer lead-in wire pin by heat pressing process with the FPC of touch-control IC, and complete sensor pattern electrode layer and be connected with the electricity of touch-control IC.
Claims (6)
1. an improved OGS touch-screen, it is characterized in that: adopt rhythmo structure, rhythmo structure includes glass cover-plate, printing ink light shield layer, sensor layer and guarded electrode layer successively, described cover-plate glass is chemically toughened glass, the sensor layer is the single face transparent electrode layer, described guarded electrode layer is produced on the second polaroid surface of LCD screen, polaroid and glass cover-plate laminating.
2. improved OGS touch-screen as claimed in claim 1, it is characterized in that: the direct vacuum sputtering of described sensor layer is produced on the lower surface of glass cover-plate.
3. improved OGS touch-screen as claimed in claim 1, it is characterized in that: the material of described sensor layer is tin indium oxide (ITO) material.
4. improved OGS touch-screen as claimed in claim 1, it is characterized in that: described guarded electrode layer is transparent conductive material, can be the materials such as tin indium oxide (ITO), nano metal, carbon nano-tube and single or multiple lift Graphene, also comprise some transparent composite conducting materials.
5. improved OGS touch-screen as claimed in claim 1 is characterized in that: described polaroid is fitted by optical lens gelatin and glass cover-plate.
6. improved OGS touch-screen as claimed in claim 1, it is characterized in that: described glass cover plate surfaces surrounding or four turnings are provided with conductive pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013202496515U CN203338327U (en) | 2013-05-09 | 2013-05-09 | Improved optical guidance system (OGS) touch screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013202496515U CN203338327U (en) | 2013-05-09 | 2013-05-09 | Improved optical guidance system (OGS) touch screen |
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| CN2013202496515U Expired - Fee Related CN203338327U (en) | 2013-05-09 | 2013-05-09 | Improved optical guidance system (OGS) touch screen |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105706030A (en) * | 2013-12-13 | 2016-06-22 | 三星电子株式会社 | Method for fabricating touch panel, touch panel, and electronic device having the touch panel |
| CN107037933A (en) * | 2016-02-04 | 2017-08-11 | 中国科学院金属研究所 | A kind of preparation method of the grapheme capacitive touch screen of three layers of transparent electrode structure |
| CN109496085A (en) * | 2017-09-12 | 2019-03-19 | 南昌欧菲生物识别技术有限公司 | Cover plate assembly and its manufacturing method and electronic device |
-
2013
- 2013-05-09 CN CN2013202496515U patent/CN203338327U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105706030A (en) * | 2013-12-13 | 2016-06-22 | 三星电子株式会社 | Method for fabricating touch panel, touch panel, and electronic device having the touch panel |
| CN105706030B (en) * | 2013-12-13 | 2019-09-24 | 三星电子株式会社 | For manufacturing the method for touch panel, touch panel and with the electronic device of the touch panel |
| CN107037933A (en) * | 2016-02-04 | 2017-08-11 | 中国科学院金属研究所 | A kind of preparation method of the grapheme capacitive touch screen of three layers of transparent electrode structure |
| CN109496085A (en) * | 2017-09-12 | 2019-03-19 | 南昌欧菲生物识别技术有限公司 | Cover plate assembly and its manufacturing method and electronic device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 Termination date: 20210509 |
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| CF01 | Termination of patent right due to non-payment of annual fee |