CN205451020U - Graphite alkene capacitive touch screen with forced induction - Google Patents
Graphite alkene capacitive touch screen with forced induction Download PDFInfo
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- CN205451020U CN205451020U CN201521105015.0U CN201521105015U CN205451020U CN 205451020 U CN205451020 U CN 205451020U CN 201521105015 U CN201521105015 U CN 201521105015U CN 205451020 U CN205451020 U CN 205451020U
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Abstract
The utility model provides a graphite alkene capacitive touch screen with forced induction which the structure is including lapping layer, OCA optics glue film a, the transparent conduction film layer of upper graphite alkene, the transparent conduction film layer of lower floor's graphite alkene, pressure sensitiveness polymer elastomer, OCA optics glue film b, display module assembly, peripheral circuit, interface chips a, peripheral circuit, interface chips b and main control chip. The polymer elastomer that is equipped with the transparent insulation of one deck in the middle of the transparent conduction film layer of two -layer graphite alkene is in order to adapt to outside touch -control variation in pressure. The during operation, touch -control pressure arouses the local deformation of polymer elastomer, leads to the change of local electric capacity, and extrapolates the size of touch -control pressure. And can propose the sensitivity of high pressure perception through the micro -nano structure design to the polymer elastomer. Forced induction has been realized to graphite alkene touch -sensitive screen, has collapsible, high sensitivity, frivolous, high light transmission rate, high conductivity, low cost, green's advantage, establishes the basis for novel touch -control equipment.
Description
Technical field
This utility model belongs to electronic information technology touch screen field, particularly to a kind of grapheme capacitive touch screen with pressure sensitive.
Background technology
Touch screen is also called " touch screen ", " contact panel ", because having the advantages such as ease for operation, intuitive and motility, it has also become primary human's interactive meanses such as the operation interfaces of PMC equipment and integrated information terminal such as smart mobile phone, panel computer, smart mobile phone, super notebook computer, Wearable device and machinery equipment.Touch screen can be divided into four kinds of main Types such as capacitance touch screen, electric resistance touch screen, infrared touch panel and surface acoustic wave touch screen according to different operation principles.A series of advantages such as wherein capacitance touch screen has multi-point touch, the response time is fast, length in service life, light transmittance high and user's experience is superior.Simultaneously along with the progressively maturation of technique, yields is significantly improved, and price reduces day by day, and capacitance touch screen has become the major way that small-medium size information terminal touch-control is mutual the most.
In recent years, the application of Graphene touch screen receives greatly concern, especially has market prospect widely in fields such as following Flexible Displays, Wearable device.But, the capacitive touch screen of present stage includes Graphene touch screen, the only touch location of perception screen body place plane (X, Y-axis two-dimensional space), it is difficult to support the touch parameter perception being perpendicular to shield body plane (Z axis), the i.e. sensing of pressure.
Utility model content
The purpose of this utility model is to provide a kind of grapheme capacitive touch screen with pressure sensitive, it is achieved plan position information and the sensing of Z axis pressure.
A kind of grapheme capacitive touch screen with pressure sensitive involved by this utility model, including cover layer, OCA optical cement layer a, upper strata transparent graphene conductive film layer, lower floor's transparent graphene conductive film layer, pressure sensibility polymer elastomer, OCA optical cement layer b, display module, longitudinal peripheral circuit of conductive area, interface chip a, the peripheral circuit in cross conduction region, interface chip b and main control chip；The polymer elastomer of layer of transparent insulation is set in the centre of upper strata transparent graphene conductive film layer and lower floor's transparent graphene conductive film layer, polymer elastomer can produce obvious deformation under pressure, one in the materials such as polymer elastomer is PDMS (polydimethylsiloxane), TPU (polyurethane elastomer), silicone rubber or polyurethane rubber, thickness is 0.1～500um；Transparent graphene conductive film layer uses the CVD method of scale to prepare, and large area is transferred on non-transparent flexible substrate, and its number of plies is 1～10 layer, and its sheet resistance is 10～1000 Ω/, and its light transmittance is 80～97%；Touching position information and pressure information are transmitted to main control chip by upper layer graphene and lower layer graphene by peripheral circuit and interface chip, main control chip, according to the input information of interface chip a and interface chip b, obtains the touch location to grapheme capacitive touch screen operation and the touch pressure of correspondence.
The described Graphene in the transparent graphene conductive film layer of upper strata is divided into a plurality of the most equidistant and parallel longitudinal conductive area, and the Graphene in lower floor's graphene layer transparent conductive film layer is divided into a plurality of the most equidistant and cross conduction region of equality.
Described pressure sensibility polymer elastomer, it can be smooth elastomer thin film, or can be further at elastomer thin film surface configuration micro nano structure, to strengthen elastomer elastic deformation ability under uniform pressure effect, thus improve pressure sensing sensitivity, surface micro-nano structure includes pyramid, cylinder, rectangle pillar, regular hexagon pillar, circular cone etc., and its characteristic size is 100nm～100um, and height is 100nm～100um.
Described interface chip includes the interface chip a of longitudinal circuit and the interface chip b of transverse circuit, longitudinal conductive area of its Graphene at the middle and upper levels is connected with longitudinal circuit interface chip a by the peripheral circuit of longitudinal conductive area, and the cross conduction region of lower layer graphene is passed through the peripheral circuit in cross conduction region and is connected with transverse circuit interface chip b.
Described interface chip a gathers and processes longitudinal Y-direction positional information, and interface chip b gathers and process longitudinal direction X-direction positional information, and (X, Y) information is input to main control chip obtains the more specific location information of touch-control.
The change of two the constituted electric capacity of layer graphene up and down at touch location (X, Y) place is acquired by described main control chip, and is processed as force value.
Grapheme capacitive touch screen involved by this utility model has pressure sensitive ability, and pressure sensitive scope is 0.1Pa～100kPa, and its application includes that touch-screen mobile phone, touch screen computer, the touch screen of Wearable device show.
Accompanying drawing explanation
Fig. 1 is the device architecture sectional view of the grapheme capacitive touch screen with pressure sensitive described in embodiment one, wherein 101 is cover layer, 102 is OCA optical cement layer a, 103 is upper strata transparent graphene conductive film layer, 104 is pressure sensibility polymer elastomer, 105 is lower floor's transparent graphene conductive film layer, and 106 is OCA optical cement layer b, and 107 is display module；
Fig. 2 is the Graphene circuit diagram of touch screen, wherein 201 is longitudinal conductive area of upper layer graphene, 202 is the cross conduction region of lower layer graphene, 203 is the peripheral circuit of longitudinal conductive area, 204 is the interface chip a of longitudinal circuit, 205 is the peripheral circuit in cross conduction region, and 206 is the interface chip b of transverse circuit, and 207 is main control chip；
Fig. 3 is the device architecture sectional view of the grapheme capacitive touch screen with pressure sensitive described in embodiment two, wherein 301 is cover layer, 302 is OCA optical cement layer a, 303 is upper strata transparent graphene conductive film layer, 304 is pressure sensibility polymer elastomer, 305 is lower floor's transparent graphene conductive film layer, and 306 is OCA optical cement layer b, and 307 is display module.
Detailed description of the invention
With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings.
Embodiment one
The device architecture of the grapheme capacitive touch screen of the pressure sensitive of the present embodiment is as shown in Figure 1, upper strata transparent graphene conductive film layer 103 and lower floor's transparent graphene conductive film layer 104 all use CVD growth Graphene to make, and be transferred in flexible PET base by large area transfer method, the number of plies of described Graphene is 1 layer, sheet resistance is 200 Ω/sq, and range of transmittance is 91%.
In the present embodiment, the graphical method by photoetching, etching of transparent graphene conductive film realizes.
In the present embodiment, described Graphene capacitance touch screen also includes that pressure sensibility polymer elastomer 104, described upper strata transparent graphene conductive film layer 103 and lower floor's transparent graphene conductive film layer 105 lay respectively at the upper and lower surface of pressure sensibility polymer elastomer 104.
In the present embodiment, described pressure sensibility polymer elastomer 104 uses PDMS material, and thickness is 50um, and surface carries out micro-nano structure process.
In the present embodiment, described micro-nano structure is pyramid, and characteristic size is 5um, and height is 5um.
In the present embodiment, upper strata transparent graphene conductive film layer 103 is divided into a plurality of the most equidistant and parallel longitudinal conductive area 201 by the method for laser ablation, and lower floor's transparent graphene conductive film layer 105 is divided into a plurality of the most equidistant and parallel longitudinal conductive area 202 by the method for laser ablation.
In the present embodiment, longitudinal conductive area 201 is connected with longitudinal circuit interface chip 204 by the peripheral circuit 203 of longitudinal conductive area, and the cross conduction region 202 of lower layer graphene is connected with the interface chip 206 of transverse circuit by the peripheral circuit 205 in cross conduction region.
In the present embodiment, interface chip 204 and interface chip 206 are connected to main control chip, in order to gather and to process positional information and the pressure information of touch screen.
In the present embodiment, described capacitance touch screen also includes cover layer 101, display module 107 and OCA optical cement layer a102 and OCA optical cement layer b106, described cover layer 101 is bonded together with upper strata transparent graphene conductive film layer 103 by OCA optical cement layer a102, and described display module 107 passes through OCA optical cement layer b106 and bonds together with lower floor transparent graphene conductive film layer 105.
In the present embodiment, described cover layer 101 uses transparent glass material to make.
Embodiment two
The device architecture of the grapheme capacitive touch screen of the pressure sensitive of the present embodiment is as shown in Figure 3, described upper strata transparent graphene conductive film layer 303 and lower floor's transparent graphene conductive film layer 304 all use CVD growth Graphene to make, and be transferred in flexible PI substrate by large area transfer method, the number of plies of described Graphene is 3 layers, sheet resistance is 100 Ω/sq, and range of transmittance is 85%.
In the present embodiment, described Graphene capacitance touch screen also includes that pressure sensibility polymer elastomer 304, described upper strata transparent graphene conductive film layer 303 and lower floor's transparent graphene conductive film layer 305 lay respectively at the upper and lower surface of pressure sensibility polymer elastomer 304.
In the present embodiment, described pressure sensibility polymer elastomer 304 uses TPU material, and thickness is 200um, and surface does not carry out micro-nano structure process.
In the present embodiment, upper strata transparent graphene conductive film layer 303 is divided into a plurality of the most equidistant and parallel longitudinal conductive area 201 by the method for laser ablation, and lower floor's transparent graphene conductive film layer 305 is divided into a plurality of the most equidistant and parallel longitudinal conductive area 202 by the method for laser ablation.
In the present embodiment, longitudinal conductive area 201 is connected with longitudinal circuit interface chip 204 by the peripheral circuit 203 of longitudinal conductive area, and the cross conduction region 202 of lower layer graphene is connected with the interface chip 206 of transverse circuit by the peripheral circuit 205 in cross conduction region.
In the present embodiment, interface chip 204 and interface chip 206 are connected to main control chip, in order to gather and to process positional information and the pressure information of touch screen.
In the present embodiment, described capacitance touch screen also includes cover layer 301, display module 307 and OCA optical cement layer a302 and OCA optical cement layer b306, described cover layer 301 is bonded together with upper strata transparent graphene conductive film layer 303 by OCA optical cement layer a302, and described display module 307 passes through OCA optical cement layer b306 and bonds together with lower floor transparent graphene conductive film layer 305.
In the present embodiment, described cover layer 301 uses polyethylene terephtalate material to make.
Finally illustrate is, above example is only in order to illustrate the technical solution of the utility model and unrestricted, although this utility model being described in detail with reference to preferred embodiment, it will be understood by those within the art that, the technical solution of the utility model can be modified or equivalent, without deviating from objective and the scope of technical solutions of the utility model, it all should be contained in the middle of right of the present utility model.
Claims (7)
1. a grapheme capacitive touch screen with pressure sensitive, including cover layer (101), OCA optical cement layer a (102), upper strata transparent graphene conductive film layer (103), lower floor's transparent graphene conductive film layer (105), pressure sensibility polymer elastomer (104), OCA optical cement layer b (106), display module (107), the peripheral circuit (203) of longitudinal conductive area, interface chip a (204), the peripheral circuit (205) in cross conduction region, interface chip b (206) and main control chip (207)；It is characterized in that: the polymer elastomer (104) of layer of transparent insulation is set in the centre on upper strata transparent graphene conductive film layer (103) and lower floor's transparent graphene conductive film layer (105), polymer elastomer can produce obvious deformation under pressure, polymer elastomer is the one in polydimethylsiloxane, polyurethane elastomer, silicone rubber or urethane rubber materials, and thickness is 0.1～500um；Upper strata transparent graphene conductive film layer and lower floor's transparent graphene conductive film layer all use CVD method growth Graphene to make, and large area is transferred on non-transparent flexible substrate, its number of plies is 1～10 layer, and its sheet resistance is 10～1000 Ω/, and its light transmittance is 80～97%；Touching position information and pressure information are transmitted to main control chip (207) by upper layer graphene and lower layer graphene by peripheral circuit and interface chip, main control chip (207), according to interface chip a (204) and the input information of interface chip b (206), obtains the touch location to grapheme capacitive touch screen operation and the touch pressure of correspondence.
A kind of grapheme capacitive touch screen with pressure sensitive the most according to claim 1, it is characterized in that: the Graphene in the transparent graphene conductive film layer of upper strata is divided into a plurality of the most equidistant and parallel longitudinal conductive area (201), the Graphene in lower floor's transparent graphene conductive film layer is divided into a plurality of the most equidistant and cross conduction region (202) of equality.
A kind of grapheme capacitive touch screen with pressure sensitive the most according to claim 1, it is characterized in that: described pressure sensibility polymer elastomer (104), it can be smooth elastomer thin film, or can be further at elastomer thin film surface configuration micro nano structure, to strengthen elastomer elastic deformation ability under uniform pressure effect, thus improve pressure sensing sensitivity, surface micro-nano structure includes pyramid, cylinder, rectangle pillar, regular hexagon pillar, circular cone, its characteristic size is 100nm～100um, it is highly 100nm～100um.
A kind of grapheme capacitive touch screen with pressure sensitive the most according to claim 1, it is characterized in that: described interface chip includes the interface chip a (204) of longitudinal circuit and the interface chip b (206) of transverse circuit, longitudinal conductive area (201) of its Graphene at the middle and upper levels is connected with longitudinal circuit interface chip a (204) by the peripheral circuit (203) of longitudinal conductive area, the cross conduction region (202) of lower layer graphene is connected with transverse circuit interface chip b (206) by the peripheral circuit (205) in cross conduction region.
A kind of grapheme capacitive touch screen with pressure sensitive the most according to claim 1, it is characterized in that: described interface chip a (204) gathers and process longitudinal Y-direction positional information, interface chip b (206) gathers and processes longitudinal X-direction positional information, and (X, Y) information is input to main control chip (207) obtains the more specific location information of touch-control.
A kind of grapheme capacitive touch screen with pressure sensitive the most according to claim 1, it is characterized in that: the change of two the constituted electric capacity of layer graphene up and down at touch location is acquired by described main control chip (207), and is processed as force value.
A kind of grapheme capacitive touch screen with pressure sensitive, it is characterised in that pressure sensitive scope is 0.1Pa～100kPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201521105015.0U CN205451020U (en) | 2015-12-28 | 2015-12-28 | Graphite alkene capacitive touch screen with forced induction |
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| CN201521105015.0U CN205451020U (en) | 2015-12-28 | 2015-12-28 | Graphite alkene capacitive touch screen with forced induction |
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| CN205451020U true CN205451020U (en) | 2016-08-10 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511702A (en) * | 2015-12-28 | 2016-04-20 | 中国科学院重庆绿色智能技术研究院 | Graphene capacitive touch screen with pressure induction function |
| CN106546362A (en) * | 2016-10-27 | 2017-03-29 | 中国科学院重庆绿色智能技术研究院 | A kind of capacitance pressure transducer, based on Graphene |
| CN107329597A (en) * | 2017-08-23 | 2017-11-07 | 湖南中力皓电子科技有限公司 | One kind reinforces TrackPoint |
| WO2018039939A1 (en) * | 2016-08-30 | 2018-03-08 | 华为技术有限公司 | Capacitive pressure sensor and fabrication method thereof |
| CN112864204A (en) * | 2021-01-13 | 2021-05-28 | 京东方科技集团股份有限公司 | Display panel, touch detection method thereof and display device |
| CN112903146A (en) * | 2021-01-22 | 2021-06-04 | 中国科学院重庆绿色智能技术研究院 | Preparation method and application of dermal-based flexible pressure sensor |
-
2015
- 2015-12-28 CN CN201521105015.0U patent/CN205451020U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511702A (en) * | 2015-12-28 | 2016-04-20 | 中国科学院重庆绿色智能技术研究院 | Graphene capacitive touch screen with pressure induction function |
| WO2018039939A1 (en) * | 2016-08-30 | 2018-03-08 | 华为技术有限公司 | Capacitive pressure sensor and fabrication method thereof |
| CN106546362A (en) * | 2016-10-27 | 2017-03-29 | 中国科学院重庆绿色智能技术研究院 | A kind of capacitance pressure transducer, based on Graphene |
| CN107329597A (en) * | 2017-08-23 | 2017-11-07 | 湖南中力皓电子科技有限公司 | One kind reinforces TrackPoint |
| CN107329597B (en) * | 2017-08-23 | 2023-09-29 | 湖南中力皓电子科技有限公司 | Reinforced pointing rod |
| CN112864204A (en) * | 2021-01-13 | 2021-05-28 | 京东方科技集团股份有限公司 | Display panel, touch detection method thereof and display device |
| CN112903146A (en) * | 2021-01-22 | 2021-06-04 | 中国科学院重庆绿色智能技术研究院 | Preparation method and application of dermal-based flexible pressure sensor |
| CN112903146B (en) * | 2021-01-22 | 2022-07-15 | 中国科学院重庆绿色智能技术研究院 | Preparation method and application of dermal-based flexible pressure sensor |
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Granted publication date: 20160810 Effective date of abandoning: 20190215 |
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| AV01 | Patent right actively abandoned |