CN100573432C - Multi-point electric resistance touch screen - Google Patents
Multi-point electric resistance touch screen Download PDFInfo
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- CN100573432C CN100573432C CNB2008100674704A CN200810067470A CN100573432C CN 100573432 C CN100573432 C CN 100573432C CN B2008100674704 A CNB2008100674704 A CN B2008100674704A CN 200810067470 A CN200810067470 A CN 200810067470A CN 100573432 C CN100573432 C CN 100573432C
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Abstract
The present invention relates to a kind of touch-screen, refer more particularly to a kind of multi-point electric resistance touch screen of the touch location separately can discern multiple spot and touch simultaneously the time.It comprises the transparent medium supporting layer, upside is provided with the transparent medium touch layer, be provided with rectangle ITO conducting film in transparent medium supporting layer upper surface, be provided with isolated area between this rectangle ITO conducting film, the two ends of rectangle ITO conducting film are coated with electrode, draw by electrode outlet line, transparent medium touch layer lower surface is provided with rectangle ITO conducting film perpendicular to supporting layer upper surface rectangle ITO conducting film direction, be distributed with isolated area between rectangle ITO conducting film, the two ends of rectangle ITO conducting film are coated with electrode, are drawn by electrode outlet line.Its beneficial effect is: 1, can realize the accurate or coarse localization to single-point touches.2, the touch location of identification multiple spot when touching simultaneously simultaneously, both can carry out the location of rough range to the multiple spot coordinate according to different application, also can accurately locate (pixel).3, low in energy consumption, the touch objects material is unrestricted, and locator meams is flexible, and is simple in structure.
Description
Technical field
The present invention relates to a kind of touch-screen, refer more particularly to a kind of multi-point electric resistance touch screen of the touch location separately can discern multiple spot and touch simultaneously the time.
Background technology
Touch-screen in the market has following three kinds:
1. four-wire ohm touch-screen, the four-wire ohm touch-screen comprises two resistive layers, separate by the insulation separaant, resistive layer is the conducting film of even evaporation at glass or frosting, wherein respectively there is a bus at one deck edge in the horizontal direction, another layer respectively has a bus at the edge of vertical direction, and these four buses are drawn by electrode respectively, carry out drive controlling by circuit.During the work of four-wire ohm screen, give wherein that two buses add 0V and V on the workplace
REFOperating voltage, making workplace form uniform voltage gradient distributes, when touching, the contact of two workplaces, detect the magnitude of voltage of horizontal direction distribution bus workplace upper contact on another workplace, magnitude of voltage is relevant with position in the horizontal direction, contact, can obtain coordinate on the direction in touch point by the calculating to magnitude of voltage; Do not have detection voltage during no touch, can be judged as the no touch input.In like manner can obtain the coordinate on another direction of touch point.The four-wire ohm touch-screen can accurately be located the position of single-point touches, but multiple spot (more than 2) then can't be discerned the touch location of each point when touching simultaneously.
2. condenser type multi-point touch panel, touch-screen uses the touch panel with transparent capacitance sensing medium, and transparent conductive medium constitutes the capacitance sensing node, different point on separate work of transparent node and the expression touch-screen.The capacitance variations that occurs on each capacitance sensing node of capacitance sensing circuit supervision, the position that variation occurs and the amplitude of these variations are used to discern the multiple point touching incident.The capacitance touch screen requirement touch objects that but realizes multiple point touching in the prior art is a conductor, and capacitance touch screen is subject to electromagnetic interference (EMI), produces drift, needs calibration to bring influence to touch-screen stability.The multi-point touch panel of Philip matrix structure is easy to realize the coarse localization of single-point and multiple point touching, realizes that accurately the circuit complexity of location (pixel level) is higher, and its range of application is restricted.
3. pressure type multi-point touch panel, touch-screen use strainmeter or suitable measuring equipment to come measuring position or touch pressure.Touch-screen comprises a touch-surface, such as the multiple pressure transducer of strainmeter with matrix structure under touch-surface and couple the deformation of strainmeter and the proportional variation of its resistance with it.When applying voltage to strainmeter the time, distortion and the resistance variations that therefore causes thereof will cause that the electric current (or the voltage at two ends) by strainmeter changes.When user's multipoint touch surface, pressure transducer reads signal to pressure and sends to processor, and processor uses these to read signal and calculates the position of touch and preferably calculate touch pressure.But the structure of pressure type multi-point touch panel and circuit are realized all extremely complexity, and cost is also than higher.
Based on the weak point of existing multi-point touch panel, the inventor has designed the present invention's " multi-point electric resistance touch screen ".
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art technical matters to be solved is: the multi-point electric resistance touch screen that a kind of touch location separately can discern multiple spot and touch simultaneously the time is provided.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of multi-point electric resistance touch screen, it is attached at panel of LCD, comprise the transparent medium supporting layer identical with the display display size, the lower surface and the panel of LCD of this transparent medium supporting layer join, described transparent medium supporting layer upside is provided with the transparent medium touch layer identical with the display display size, this transparent medium touch layer directly is subjected to the touch objects contact and produces deformation at the place, touch point touching the transparent medium supporting layer, evenly be provided with the rectangular conductive film that is arranged in parallel identical in transparent medium supporting layer upper surface horizontal direction with length and width, this rectangular conductive is intermembranous to be distributed with the wide isolated area of the adjacent rectangle conducting film that is used to insulate, end on the horizontal direction of rectangular conductive film plates wide electrode, draw by electrode outlet line, transparent medium touch layer lower surface vertical direction is provided with many rectangular conductive films that are arranged in parallel identical with length and width, this rectangular conductive is intermembranous to be distributed with the wide isolated area of the adjacent rectangle conducting film that is used to insulate, end on the horizontal direction of rectangular conductive film plates wide electrode, is drawn by electrode outlet line.
Evenly be equiped with the transparent insulation separaant between transparent medium supporting layer and the transparent medium touch layer, the transparent medium supporting layer all contacts with the transparent insulation separaant with the transparent medium touch layer and is separated by the transparent insulation separaant.
Described electrode outlet line is connected to control circuit, and this control circuit is that driving sensor is partly worked and received touch signal, calculates the touch point coordinate.
Many the identical rectangular conductive films of arranging at the even evaporation horizontal direction parallel of the one side of the transparent medium identical of length and width with the display display size, the wide isolated area that distributes between the strip conducting film is with insulation adjacent conductive film, two ends on the horizontal direction of rectangular conductive film plate wide electrode, are drawn by electrode outlet line.
Many the identical rectangular conductive films of length and width that are arranged in parallel at the even evaporation vertical direction of one side of another layer transparent medium identical with the display display size, the wide isolated area that distributes between the strip conducting film is with insulation adjacent conductive film, two ends on the vertical direction of rectangular conductive film plate wide electrode, are drawn by electrode outlet line.
Two-layer measure-alike transparent medium supporting layer and transparent medium touch layer by justified margin, have the one side of conducting film staggered relatively and be in two layer medium layer inboard, the centre is evenly laid the transparent insulation separaant and is installed, and conducting film all contacts with the transparent insulation separaant and separated by the transparent insulation separaant.
Each interface that every electrode outlet line is connected control circuit by bus.
The width of conducting film can be regulated according to screen size and actual demand.Because the touch panel that transparent medium supporting layer and transparent medium touch layer constitute is mounted on display surface and carries out work, therefore defining the transparent dielectric layer of being close to display is the transparent medium supporting layer, covers the layer of transparent dielectric layer on the transparent insulation separaant on the supporting layer and touches supporting layer and be defined as the transparent medium touch layer because directly be subjected to the touch objects contact and produce deformation at the place, touch point.The transparent dielectric layer of two-layer evaporation different structure conducting film is no levels restriction in actual installation, but the transparent medium touch layer produces deformation owing to acceptance touches must be made of flexible clear materials, the transparent medium supporting layer both can be the transparent flexible material owing to producing deformation, also can be the rigidity transparent material, as materials such as organic glass, glass.
The orientation of described transparent medium touch layer and transparent medium supporting layer upper conductive film not only is defined as horizontal direction or vertical direction, but two kinds of directions all can, the direction that just need satisfy strip conducting film on the two-layer transparent dielectric layer vertically gets final product mutually.Same structure also is applicable to improvement of the present invention, conductive coating both can be distributed in the upper and lower surface in transparent medium middle layer, also can be distributed in top layer lower surface and bottom upper surface, the direction of the conductive coating of distribution and the conducting film of same operation interval keeps vertical getting final product mutually.
Described conducting film is the ITO conducting film, and it also can have the conducting film of same nature for other, and conductive coating is a nickel gold conductive coating, and it also can have the conductive coating of same nature for other.
Two-layerly plate the Sensor section that the transparent dielectric layer of stating the structural conductive film and transparent insulation separaant and electrode, electrode outlet line are formed; Function is the signal that produces different touch locations on the expression touch panel.
Control circuit part: mainly constitute by microcontroller; Function is that driving sensor is partly worked and received touch signal, calculates the touch point coordinate.
Principle of work of the present invention is:
By control circuit with scanning form by electrode outlet line with 0V and V
REFVoltage is added on the strip conducting film two end electrodes of upper strata plastic foil one by one, make the voltage gradient that is evenly distributed on the conducting film, when on every conducting film, applying voltage, all realize voltage acquisition with the scanning form by each bar conducting film electrode outlet line on the input channel connection lower floor plastic foil of ADC.When no touch, equal no-voltage signal on every strip electrode, the ADC input channel no-voltage input of corresponding every strip electrode; When the touch point, on 1～2 conducting film relevant voltage signal is arranged with the position, touch point, the ADC input channel of corresponding this 1～2 conducting film electrode has the voltage signal input, and the size of voltage is relevant with the position, by calculating the coordinate that can obtain the direction in touch point.Then with 0V and V
REFVoltage is added on the strip conducting film two end electrodes of lower floor's plastic foil one by one, each bar conducting film electrode outlet line on the plastic foil of upper strata is realized voltage acquisition with the scanning form, by can obtain the coordinate of another direction to the calculating of voltage.
Difference according to using can be divided into the location of coordinate two kinds of situations: accurately locate and coarse localization, the difference of locator meams makes type of drive slightly different.
Accurately workflow is under the situation of location:
1. on the transparent dielectric layer of upper strata, add 0V and V respectively for successively each bar conducting film two end electrodes
REFVoltage, the magnitude of voltage that each bar applies is consistent in the both sides of film.
2. after each bar membrane voltage of upper strata adds, one by one the voltage on each bar conducting film on lower floor's transparent dielectric layer is sampled by the input of the ADC in the control circuit.
On lower floor's transparent dielectric layer, add 0V and V respectively for successively each bar conducting film two end electrodes
REFVoltage, the magnitude of voltage that each bar applies is consistent in the both sides of film.
3. after adding voltage on each bar conducting film of lower floor, one by one the voltage on each bar conducting film on the transparent dielectric layer of upper strata is sampled by the input of the ADC in the controller circuitry.
4. after run-down is finished, the accurate coordinates of touch point is calculated and exported to the data of gathering by controller.
Workflow is under the coarse localization situation:
1. on the transparent dielectric layer of upper strata, add V for successively each bar conducting film one termination electrode
REFVoltage, every voltage that applies is in a side of film.
2. after each bar film of upper strata adds voltage, one by one the voltage on each bar conducting film on the layer dielectric layer is sampled by the input of the ADC in the control circuit.
3. on lower floor's transparent dielectric layer, add V for successively each bar conducting film one termination electrode
REFVoltage, every voltage that applies is in film one side.
4. after each bar film of lower floor adds voltage, one by one the voltage on each bar conducting film on the top dielectric layer is sampled by the input of the ADC in the controller circuitry.
5. after run-down is finished, the rough coordinates of touch point is calculated and exported to the data of gathering by controller.
Two kinds of locator meamss comparatively speaking, accurately the location can more accurate location touch location, is fit to single-point touches and uses.The coarse localization response speed is faster, and power consumption still less is fit to multiple point touching, application such as hand-written grade.
An improvement of the present invention is that conducting film is replaced with the strip conductive coating, and every strip conductive coating only drives with a drive wire.Equally, other conductive materials or resistive material are replaced the location that the conducting film among the present invention also can be realized multiple point touching.
Another improvement of the present invention is:
Many the identical rectangular conductive coatings of length and width that are arranged in parallel at the even evaporation of one side of the transparent medium identical with the display display size, the wide isolated area that distributes between conductive coating is with insulation adjacent conductive coating, end on the horizontal direction of conductive coating plates wide electrode, is drawn by electrode outlet line.
Many the identical rectangular conductive coatings of length and width that are arranged in parallel at the even evaporation vertical direction of one side of another layer transparent medium identical with the display display size, the wide isolated area that distributes between conductive coating is with insulation adjacent conductive coating, end on the vertical direction of conductive coating plates wide electrode, is drawn by electrode outlet line.
3. even many identical rectangular conductive films of length and width that are arranged in parallel of evaporation respectively on the two sides of the 3rd layer of transparent medium identical with the display display size, the wide isolated area that distributes between the strip conducting film is with insulation adjacent conductive film, the two ends of rectangular conductive film plate wide electrode, are drawn by electrode outlet line.The strip conducting film on two sides becomes homeotropic alignment.
4. each interface that every electrode outlet line is connected control circuit.
5. three layers of measure-alike transparent medium are installed in certain sequence, two-sided have the dielectric layer of conducting film to be defined as the middle layer, two-layer have the transparent medium of nickel gold plating to be respectively top layer and bottom, arrangement by top layer, middle layer, bottom is mounted on the display pannel, wherein require the nickel gold bar shape coating of top layer lower surface vertical mutually with the ITO strip conducting film of middle layer upper surface, the ITO strip conducting film of middle layer lower surface is vertical mutually with the nickel gold bar shape coating of bottom upper surface.Install uniform transparent insulation separaant between top layer and the middle layer and between middle layer and the bottom additional.
Sensor section: three layers plate the Sensor section that the transparent dielectric layer of stating structural membrane and transparent insulation separaant and electrode, electrode outlet line are formed; Function is the signal that produces different touch locations on the expression touch panel.
Control circuit part: mainly constitute by microcontroller; Function is that driving sensor is partly worked and received touch signal, calculates the touch point coordinate.
The principle of work of second kind of structure of the present invention is:
By control circuit with scanning form by electrode outlet line with 0V and V
REFVoltage is added on the strip conducting film two end electrodes of middle layer transparent medium one by one, make the voltage gradient that is evenly distributed on the conducting film, when applying voltage on every conducting film, all the input channel by ADC connects on the corresponding transparent medium each bar conductive coating electrode outlet line and realizes voltage acquisition with the scanning form.During every conducting film of scanning middle layer upper surface, gather the voltage of every nickel gold plating of top layer lower surface; During every conducting film of scanning middle layer lower surface, gather the voltage of every strip nickel of bottom upper surface gold plating.Two-part voltage scanning and collection can be carried out simultaneously.When no touch, equal no-voltage signal on every strip electrode, the ADC input channel no-voltage input of corresponding every strip electrode; When the touch point, on 1～2 strip nickel gold plating relevant voltage signal is arranged with the position, touch point, the ADC input channel that connects this 1～2 strip nickel gold plating electrode has the voltage signal input, and the size of voltage is relevant with the position, by calculating the coordinate that can obtain the direction in touch point.Simultaneously with 0V and V
REFVoltage is added on the strip conducting film two end electrodes of middle layer lower surface one by one, each bar strip nickel gold plating electrode outlet line of bottom transparent dielectric layer upper surface plastic foil is realized voltage acquisition with the scanning form, by can obtain the coordinate of another direction to the calculating of voltage.
Difference according to using can be divided into the location of coordinate two kinds of situations: accurately locate and coarse localization, the difference of locator meams makes type of drive slightly different.
Accurately workflow is under the situation of location:
1. at middle layer transparent dielectric layer upper surface, add 0V and V respectively for successively each bar conducting film two end electrodes
REFVoltage, each magnitude of voltage of applying of row is consistent in the both sides of film.
2. at top layer transparent dielectric layer lower surface, after adding voltage for each bar conducting film of middle layer upper surface, one by one the voltage on each bar strip nickel gold plating is sampled by the input of the ADC in the control circuit.
3. at middle layer transparent dielectric layer lower surface, add 0V and V respectively for successively each bar conducting film two end electrodes
REFVoltage, each magnitude of voltage of applying of row is consistent in the both sides of film.
4. at bottom transparent dielectric layer upper surface, after adding voltage for each bar conducting film of middle layer lower surface, one by one the voltage on each bar strip nickel gold plating is sampled by the input of the ADC in the control circuit.
5. step 1,2 and step 3,4 coordinates on position level and the vertical direction respectively can be carried out simultaneously.After run-down is finished, the accurate coordinates of touch point is calculated and exported to the data of gathering by controller.
Workflow is under the coarse localization situation:
1. at middle layer transparent dielectric layer upper surface, add V for successively each bar conducting film one termination electrode
REFVoltage, the magnitude of voltage that each bar applies remains on the same side of film.
2. at top layer transparent dielectric layer lower surface, after adding voltage for each bar conducting film of middle layer upper surface, one by one the voltage on each bar strip nickel gold plating is sampled by the input of the ADC in the control circuit.
3. at middle layer transparent dielectric layer lower surface, add V for successively each bar conducting film one termination electrode
REFVoltage, the magnitude of voltage that each bar applies remains on the same side of film.
4. at bottom transparent dielectric layer upper surface, after adding voltage for each bar conducting film of middle layer lower surface, one by one the voltage on each bar strip nickel gold plating is sampled by the input of the ADC in the control circuit.
5. step 1,2 and step 3,4 coordinates on position level and the vertical direction respectively can be carried out simultaneously.After run-down is finished, the rough coordinates of touch point is calculated and exported to the data of gathering by controller.
The beneficial effect of multi-point electric resistance touch screen of the present invention is:
1. can realize accurate or coarse localization to single-point touches.
2. the touch location when the identification multiple spot touches simultaneously, simultaneously, (for example: about 1cm * 1cm (pixel) also can accurately be located in) location both can to carry out rough range to the multiple spot coordinate according to different application.
3. low in energy consumption, the touch objects material is unrestricted, and locator meams is flexible, and is simple in structure.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the horizontal direction one-piece construction vertical view of the embodiment of the invention one;
Fig. 2 is the vertical direction one-piece construction vertical view of the embodiment of the invention one;
Fig. 3 is the horizontal direction one-piece construction cut-open view of the embodiment of the invention one;
Fig. 4 is the vertical direction one-piece construction cut-open view of the embodiment of the invention one;
Fig. 5 is the one-piece construction circuit diagram of the embodiment of the invention one;
Fig. 6 is the horizontal direction one-piece construction vertical view of the embodiment of the invention two;
Fig. 7 is the horizontal direction one-piece construction cut-open view of the embodiment of the invention two;
Fig. 8 is the horizontal direction one-piece construction cut-open view of the embodiment of the invention two.
Description of reference numerals:
1, conducting film 2, electrode 3, electrode outlet line
4, isolated area 5, transparent medium touch layer 6, transparent insulation separaant
7, panel of LCD 8, transparent medium supporting layer 9, control circuit
10, bus 11, conductive coating 12, transparent medium middle layer
Embodiment
Referring to figs. 1 through Fig. 8, the present invention implements like this:
In the embodiment one of Fig. 1 to Fig. 5, a kind of multi-point electric resistance touch screen, it is attached at panel of LCD (7), comprise the transparent medium supporting layer (8) identical with the display display size, the lower surface of this transparent medium supporting layer (8) and panel of LCD (7) join, transparent medium supporting layer (8) upside is provided with the transparent medium touch layer (5) identical with the display display size, this transparent medium touch layer (5) directly is subjected to the touch objects contact and produces deformation at the place, touch point touching transparent medium supporting layer (8), evenly be provided with the rectangular conductive film (1) that is arranged in parallel identical in transparent medium supporting layer (8) upper surface horizontal direction with length and width, be distributed with the wide isolated area (4) of the adjacent rectangle conducting film (1) that is used to insulate between this rectangular conductive film (1), two ends on the horizontal direction of rectangular conductive film (1) plate and the wide electrode (2) of conducting film (1), draw by electrode outlet line (3), transparent medium touch layer (5) lower surface vertical direction is provided with many rectangular conductive films (1) that are arranged in parallel identical with length and width, be distributed with the wide isolated area (4) of the adjacent rectangle conducting film (1) that is used to insulate between this rectangular conductive film (1), two ends on the horizontal direction of rectangular conductive film (1) plate and the wide electrode (2) of conducting film (1), are drawn by electrode outlet line (3).
Evenly be equiped with transparent insulation separaant (6) in the middle of the isolated area (4), rectangular conductive film (1) all contacts with transparent insulation separaant (6) and is separated by transparent insulation separaant (6).
Electrode outlet line (3) is connected to control circuit (9) by bus (10), and this control circuit (9) is that driving sensor is partly worked and received touch signal, calculates the touch point coordinate.
In the present embodiment, conducting film (1) is the ITO conducting film, and conductive coating (11) is a nickel gold conductive coating.
In the embodiment 2 of Fig. 6 to Fig. 8, be provided with transparent medium middle layer (12) between transparent medium supporting layer (8) and the transparent medium touch layer (5), evenly be provided with the rectangular conductive coating (11) that is arranged in parallel identical in transparent medium middle layer (12) upper horizontal direction with length and width, this rectangular conductive is coated with the wide isolated area (4) that interlayer (11) is distributed with the adjacent rectangle conductive coating (11) that is used to insulate, end on the horizontal direction of rectangular conductive coating (11) plates wide electrode (2), draw by electrode outlet line (3), transparent medium touch layer (5) downside vertical direction is provided with many rectangular conductive films (1) that are arranged in parallel identical with length and width, be distributed with the wide isolated area (4) of the adjacent rectangle conducting film (1) that is used to insulate between this rectangular conductive film (1), two ends on the horizontal direction of rectangular conductive film (1) plate the electrode wide with conducting film (2), are drawn by electrode outlet line (3).
The above, it only is the preferred embodiment of a kind of multi-point electric resistance touch screen of the present invention, be not that technical scope of the present invention is imposed any restrictions, every foundation technical spirit of the present invention all still belongs in the scope of the technology of the present invention content any trickle modification, equivalent variations and modification that top embodiment did.
Claims (5)
1, a kind of multi-point electric resistance touch screen, it is attached at panel of LCD (7), comprise the transparent medium supporting layer (8) identical with the display display size, the downside of this transparent medium supporting layer (8) and panel of LCD (7) join, the invention is characterized in: described transparent medium supporting layer (8) upside is provided with the transparent medium touch layer (5) identical with the display display size, this transparent medium touch layer (5) directly is subjected to the touch objects contact and produces deformation at the place, touch point touching transparent medium supporting layer (8), evenly be provided with the rectangular conductive film (1) that is arranged in parallel identical in transparent medium supporting layer (8) upper surface with length and width, be distributed with the wide isolated area (4) of the adjacent rectangle conducting film (1) that is used to insulate between this rectangular conductive film (1), the two ends of rectangular conductive film (1) plate wide electrode (2), draw by electrode outlet line (3), transparent medium touch layer (5) is provided with many rectangular conductive films (1) that are arranged in parallel identical with length and width perpendicular to transparent medium supporting layer (8) upper surface rectangular conductive film (1) direction, be distributed with the wide isolated area (4) of the adjacent rectangle conducting film (1) that is used to insulate between this rectangular conductive film (1), the two ends of rectangular conductive film (1) plate wide electrode (2), draw by electrode outlet line (3), described electrode outlet line (3) is connected to control circuit (9), this control circuit (9) is that driving sensor is partly worked and received touch signal, calculates the touch point coordinate.
2, multi-point electric resistance touch screen according to claim 1, it is characterized in that evenly being equiped with transparent insulation separaant (6) between described transparent medium touch layer (5) and the transparent medium supporting layer (8), the conducting film (1) on transparent medium touch layer (5) and the transparent medium supporting layer (8) is owing to the even distribution of transparent insulation separaant (6) is separated.
3, multi-point electric resistance touch screen according to claim 1, it is characterized in that being provided with transparent medium middle layer (12) between described transparent medium supporting layer (8) and the transparent medium touch layer (5), orthogonal conducting film of direction arranged evenly (1) and rectangular conductive coating (11) on transparent medium supporting layer (8) upper surface and transparent medium middle layer (12) lower surface, transparent medium touch layer (5) lower surface and the orthogonal conducting film of transparent medium middle layer (12) upper surface direction arranged evenly (1) and rectangular conductive coating (11).
4,, it is characterized in that described conducting film is the ITO conducting film according to claim 1 or 2 or 3 described multi-point electric resistance touch screens.
5, multi-point electric resistance touch screen according to claim 3 is characterized in that described conductive coating is a nickel gold conductive coating.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100674704A CN100573432C (en) | 2008-05-27 | 2008-05-27 | Multi-point electric resistance touch screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100674704A CN100573432C (en) | 2008-05-27 | 2008-05-27 | Multi-point electric resistance touch screen |
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| CN101286107A CN101286107A (en) | 2008-10-15 |
| CN100573432C true CN100573432C (en) | 2009-12-23 |
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| CNB2008100674704A Expired - Fee Related CN100573432C (en) | 2008-05-27 | 2008-05-27 | Multi-point electric resistance touch screen |
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| WO2011157244A2 (en) * | 2011-08-24 | 2011-12-22 | 华为终端有限公司 | Battery capable of detecting battery core deformation and mobile terminal |
| CN103294248B (en) * | 2012-08-17 | 2016-04-20 | 上海天马微电子有限公司 | The electric connection structure of touch control liquid crystal display device |
| CN105183266A (en) * | 2015-09-18 | 2015-12-23 | 合肥工业大学 | Multi-point resistive touch screen structure |
| CN107546316B (en) * | 2017-08-22 | 2020-03-13 | 丁文兰 | Preparation method of toughened transparent conductive glass substrate and intelligent building glass |
| CN109856853B (en) * | 2019-04-04 | 2022-05-24 | 京东方科技集团股份有限公司 | Color film substrate and liquid crystal display |
| CN110597423A (en) * | 2019-09-17 | 2019-12-20 | 武汉华星光电半导体显示技术有限公司 | Resistance-type touch screen and flexible display device |
-
2008
- 2008-05-27 CN CNB2008100674704A patent/CN100573432C/en not_active Expired - Fee Related
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| CN101286107A (en) | 2008-10-15 |
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