CN110045873A - The compound pressure sensitivity touch screen of capacitance resistance - Google Patents

The compound pressure sensitivity touch screen of capacitance resistance Download PDF

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Publication number
CN110045873A
CN110045873A CN201910342723.2A CN201910342723A CN110045873A CN 110045873 A CN110045873 A CN 110045873A CN 201910342723 A CN201910342723 A CN 201910342723A CN 110045873 A CN110045873 A CN 110045873A
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CN
China
Prior art keywords
resistance
capacitance
capacitance resistance
electrode plate
touch screen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910342723.2A
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Chinese (zh)
Inventor
吕青
李何
何小刚
谢诏光
高科威
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Taiyuan University of Technology
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Taiyuan University of Technology
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Filing date
Publication date
Application filed by Taiyuan University of Technology filed Critical Taiyuan University of Technology
Priority to CN201910342723.2A priority Critical patent/CN110045873A/en
Publication of CN110045873A publication Critical patent/CN110045873A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0414Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/045Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)

Abstract

The compound pressure sensitivity touch screen of capacitance resistance of the present invention, belongs to pressure sensitivity touch screen technology field;Provide that a kind of structure is simple, the compound pressure sensitivity touch screen of capacitance resistance of high sensitivity;A kind of technical solution are as follows: compound pressure sensitivity touch screen of capacitance resistance, it is sequentially connected in series the capacitance resistance electrode plate row to be formed in the horizontal direction including n capacitance resistance electrode plate, m capacitance resistance electrode plate is vertically sequentially connected in series the capacitance resistance electrode panel to be formed, and m capacitance resistance electrode plate row and n capacitance resistance electrode panel arrange to form capacitance resistance electrode plate array;Wherein, capacitance resistance electrode plate includes capacitive electrode plates and resistance wire, resistance wire is etched in capacitive electrode plates deviously, each capacitor motor plate internal resistance wire resistance value is equal, the pattern that resistance wire is formed is consistent, when capacitance resistance electrode plate is pressurized, deformation occurs for resistance wire, and the resistance value of resistance wire changes.

Description

The compound pressure sensitivity touch screen of capacitance resistance
Technical field
The compound pressure sensitivity touch screen of capacitance resistance of the present invention, belongs to pressure sensitivity touch screen technology field.
Background technique
Since capacitance plate is even better on user experience, it is increasingly becoming the mainstream in touch screen market, is grasped on two-dimensional surface The capacitance touch screen of work can not meet the demand that people use electronic product.More and more cell phone manufacturers are pressure sensitivity On Technology application to mobile phone screen, by generating new function and experience to the pressing of mobile phone screen.But present pressure sensitivity screen Technology is still in infancy, and is mainly increased stressor layer induction structure design in screen mould group, is caused electricity by pressure The change of appearance such as detects the dynamics of finger pressing by infrared ray through the intensity of finger.Existing some pressure sensitivity technology works Skill is complicated, and production is difficult, at high cost, and precision is relatively low, influences user experience.
Summary of the invention
The compound pressure sensitivity touch screen of capacitance resistance of the present invention, overcomes the shortcomings of the prior art, provides a kind of structure Simply, the compound pressure sensitivity touch screen of the capacitance resistance of high sensitivity.
In order to solve the above-mentioned technical problem, a kind of the technical solution adopted by the present invention are as follows: compound pressure sensitivity touch of capacitance resistance Screen, the capacitance resistance electrode plate row to be formed, m capacitance resistance are sequentially connected in series including n capacitance resistance electrode plate in the horizontal direction Electrode plate is vertically sequentially connected in series the capacitance resistance electrode panel to be formed, m capacitance resistance electrode plate row and n capacitor electricity Resistance electrode panel arranges to form capacitance resistance electrode plate array;
Wherein, capacitance resistance electrode plate includes capacitive electrode plates and resistance wire, and resistance wire is etched in capacitive electrode plates deviously, Each capacitor motor plate internal resistance wire resistance value is equal, and the pattern that resistance wire is formed is consistent, when capacitance resistance electrode plate is pressurized, electricity Hindering silk, deformation occurs, and the resistance value of resistance wire changes.
Further, the capacitance resistance electrode plate is the diamond shape electrode of 6mm*6mm.
It further, further include 3 reference resistance electrodes R1, R3, R4,3 reference resistance electrodes are sequentially distributed in the electricity Hold 3 different angles of the compound pressure sensitivity touch screen of capacitance resistance where resistance electrode plate array or the edge on 3 different sides On.
Further, the capacitance resistance electrode plate and the reference resistance electrode are etched by ITO, electrocondution slurry printing, Conductive fiber weaving manner is constituted.
It further, further include capacitance measurement circuit, resistance measuring circuit and capacitance resistance measurement switching circuit, wherein electricity Capacitance measuring circuits include signal transmitter unit and signal receiving unit, and capacitance resistance measurement switching circuit includes that the synchronous disconnecting link of row is opened Chopper switch synchronous with column is closed, resistance measuring circuit includes multiway analog switch, bridge circuit and signal conditioning circuit, signal hair It penetrates unit chopper switch synchronous with row to be connected, the synchronous chopper switch of row is connected with the side of m row capacitance resistance electrode plate row, m row The other side of capacitance resistance electrode plate row is connected with multiway analog switch, and the side of n column capacitance resistance electrode panel is synchronous with column Chopper switch be connected, the other side of n column capacitance resistance electrode panel is connected with bridge circuit, column synchronization chopper switch respectively with letter Number receiving unit is connected with multiway analog switch, and multiway analog switch is connected with bridge circuit, the output end and letter of bridge circuit Number conditioning circuit is connected.
Further, the bridge circuit is made of described 3 reference resistance electrode R1, R3, R4 and measurement resistance R2 Wheatstone bridge, wherein measurement resistance R2 is the selected a certain capacitance resistance electrode plate row of the multiway analog switch timesharing Or the resistance of column.
Further, the signal transmitter unit gives X(or Y every time) the capacitance resistance electrode plate row in direction (or column) send The driving pulse of a certain frequency out, the signal receiving unit is successively in Y(or X) capacitance resistance electrode plate is received on direction The capacitance of row (or column).
The present invention has the advantages that compared with prior art.
For capacitance resistance electrode plate of the invention compared with the electrode plate of traditional capacitance screen, the electrode plate of capacitance plate is usually real The heart without pattern, capacitance resistance electrode plate has pattern also only to change the initial value of capacitor, does not change capacitance plate positioning Principle is in function.The principle of curved resistance wire is similar to straingauge, is under pressure of different sizes, the resistance value of resistance wire Change, that is, have pressure sensitivity, this put it is completely different with electric resistance touch screen, electric resistance touch screen by the resistance touched there is no Variation, only different touch locations change electric resistance partial pressure ratio.
It is good that the present invention had not only had the characteristics that capacitance plate body-sensing, but also is able to carry out highly sensitive pressure detecting.The present invention is new Clever unique, structure is simple, and technique is easily achieved.
Detailed description of the invention
Fig. 1 is the pattern of the first capacitance resistance electrode plate provided in an embodiment of the present invention.
Fig. 2 is the pattern of second of capacitance resistance electrode plate provided in an embodiment of the present invention.
Fig. 3 is the schematic diagram of the basic touch electrode plate pair of the capacitance plate of technology before belonging to.
Fig. 4 is the schematic diagram of the basic touch electrode plate pair of capacitance resistance screen provided in an embodiment of the present invention.
Fig. 5 is that capacitance resistance provided in an embodiment of the present invention presses compound sense touch screen schematic diagram.
Fig. 6 is the circuit diagram that capacitance resistance provided in an embodiment of the present invention presses compound sense touch screen.
Specific embodiment
Following further describes the present invention with reference to the drawings.
As shown in Figure 1 and Figure 2, the embodiment of the present invention provides a kind of capacitance resistance electrode plate, it is the Rhombus of 6mm*6mm Pole.The pattern of resistance wire is etched in electrode, Fig. 1 and Fig. 2 are the pattern effects of different resistance wires, thus it is possible to vary resistance wire it is thick Carefully, interval, direction will form different patterns, and different patterns, resistance is different, selects suitable pattern, works as touch screen When being arrived the pressure of several hectograms by several grams, change resistance between 1000 Europe in 100 Europe, the resistance measuring circuit of this range It is easily achieved.As shown in figure 3, one piece of touch screen is usually by several basic touch electrode plates to forming, the electrode plate of capacitance plate It is usually solid without pattern.As shown in figure 4, basic touch electrode plate pair provided in an embodiment of the present invention, inside has identical Resistance wire pattern.
As shown in figure 5, the embodiment of the present invention provides a kind of compound pressure sensitivity touch screen of capacitance resistance, including n capacitance resistance Electrode plate is sequentially connected in series the capacitance resistance electrode plate row to be formed in the horizontal direction, m capacitance resistance electrode plate vertically according to The capacitance resistance electrode panel that secondary series connection is formed, m capacitance resistance electrode plate row and n capacitance resistance electrode panel arrange to be formed Capacitance resistance electrode plate array;
Wherein, capacitance resistance electrode plate includes capacitive electrode plates and resistance wire, and resistance wire is etched in capacitive electrode plates deviously, Each capacitor motor plate internal resistance wire resistance value is equal, and the pattern that resistance wire is formed is consistent, when capacitance resistance electrode plate is pressurized, electricity Hindering silk, deformation occurs, and the resistance value of resistance wire changes.
The compound pressure sensitivity touch screen of capacitance resistance further includes 3 reference resistance electrodes R1, R3, R4,3 reference resistance electrodes according to It is secondary be distributed in capacitance resistance electrode plate array where the compound pressure sensitivity touch screen of capacitance resistance 3 different angles or 3 differences Side edge on these be not easy the region being touched.This 3 reference resistance electrodes and capacitance resistance electrod-array are located at same The external environment of sample has temperature compensation function, the interference for effectivelying prevent temperature change to generate circuit.
Capacitance resistance electrode plate and reference resistance electrode are etched by ITO, electrocondution slurry printing, conductive fiber weaving manner It constitutes.
As shown in fig. 6, the compound pressure sensitivity touch screen of capacitance resistance further includes capacitance measurement circuit, resistance measuring circuit and capacitor Resistance measurement switching circuit, wherein capacitance measurement circuit includes signal transmitter unit and signal receiving unit, capacitance resistance measurement Switching circuit includes the synchronous chopper switch of row chopper switch synchronous with column, and resistance measuring circuit includes multiway analog switch, electric bridge Circuit and signal conditioning circuit, signal transmitter unit chopper switch synchronous with row are connected, the synchronous chopper switch of row and m row capacitor electricity The side of resistance electrode plate row is connected, and the other side of m row capacitance resistance electrode plate row is connected with multiway analog switch, n column capacitance electricity The side of resistance electrode panel chopper switch synchronous with column is connected, the other side of n column capacitance resistance electrode panel and bridge circuit phase Even, it arranges synchronous chopper switch to be connected with signal receiving unit and multiway analog switch respectively, multiway analog switch and bridge circuit It is connected, the output end of bridge circuit is connected with signal conditioning circuit.There is X in the synchronous chopper switch of row chopper switch synchronous with column End and the end Y constitute capacitance measurement circuit when the end X is synchronous to be connected at this time;When the end Y is synchronous to be connected, resistance measurement is constituted at this time Circuit.
In resistance measuring circuit, bridge circuit is by described 3 reference resistance electrode R1, R3, R4 and measurement resistance R2 group At Wheatstone bridge, wherein measurement resistance R2 be the selected a certain capacitance resistance electrode plate row of multiway analog switch timesharing Or the resistance of column.Other 3 fixed resistances of 3 reference resistance electrodes as bridge circuit.Signal conditioning circuit will measure electricity The voltage of resistance R2 is converted to standardized digital signal for reading.When capacitive electrode plates do not press, the output of initial bridge circuit Voltage is 0.It is of different sizes when forcing when pressing, it changes similar to the resistance of straingauge, on electric resistance array Different changes equally occur for resistance value, measurement resistance of the resistance of a certain capacitance resistance electrode plate battle array or column as bridge-type, resistance value Difference, the voltage difference for causing bridge-type to export is different, by measuring the size of voltage difference, perceives the dynamics of pressure sensitivity.
In capacitance measurement circuit, signal transmitter unit gives X(or Y every time) the capacitance resistance electrode plate row in direction (or Column) driving pulse of a certain frequency is sent out, signal receiving unit is successively in Y(or X) capacitance resistance electrode is received on direction The capacitance of plate row (or column).Specifically, signal transmitter unit gives X(or Y every time) the capacitor string in direction sends out one The driving pulse of certain frequency, meanwhile, signal receiving unit is successively in Y(or X) it reads on direction, when there is no touch event When, there are an initial capacitances on the crosspoint of Xi and YjC 0, the drive pulse signal on Xi is capacitively coupled on Yj by this, Collected voltage is initial voltage on Yj at this timeV 0, when having finger or other conductive bodies touch this, Xi and Yj Crosspoint on capacitor becomeC 0+△C, collected voltage is on YjV 0+△V, with this voltage change, by certain It calculates, that is, can determine the coordinate of touch point.
Capacitance resistance electrode plate provided in an embodiment of the present invention is compared with the electrode plate of traditional capacitance screen, the electrode of capacitance plate Plate is usually solid without pattern, and capacitance resistance electrode plate has pattern also only to change the initial value of capacitor, does not change electricity The principle of Rong Ping positioning is in function.The principle of curved resistance wire is similar to straingauge, is under pressure of different sizes, resistance The resistance value of silk changes, that is, has pressure sensitivity, this point is completely different with electric resistance touch screen, and electric resistance touch screen is by the electricity touched Resistance is there is no variation, and only different touch locations change electric resistance partial pressure ratio.
Although being particularly shown and describing the present invention, those skilled in the art referring to its exemplary embodiment It should be understood that in the case where not departing from the spirit and scope of the present invention defined by claim form can be carried out to it With the various changes in details.

Claims (7)

1. a kind of compound pressure sensitivity touch screen of capacitance resistance, it is characterised in that including n capacitance resistance electrode plate in the horizontal direction according to The capacitance resistance electrode plate row that secondary series connection is formed, m capacitance resistance electrode plate are vertically sequentially connected in series the capacitor to be formed electricity Resistance electrode panel, m capacitance resistance electrode plate row and n capacitance resistance electrode panel arrange to form capacitance resistance electrode plate battle array Column;
Wherein, capacitance resistance electrode plate includes capacitive electrode plates and resistance wire, and resistance wire is etched in capacitive electrode plates deviously, Each capacitor motor plate internal resistance wire resistance value is equal, and the pattern that resistance wire is formed is consistent, when capacitance resistance electrode plate is pressurized, electricity Hindering silk, deformation occurs, and the resistance value of resistance wire changes.
2. the compound pressure sensitivity touch screen of capacitance resistance according to claim 1, it is characterised in that: the capacitance resistance electrode plate For the diamond shape electrode of 6mm*6mm.
3. the compound pressure sensitivity touch screen of capacitance resistance according to claim 1, it is characterised in that: further include 3 reference resistances Electrode R1, R3, R4,3 reference resistance electrodes are sequentially distributed multiple in the capacitance resistance where the capacitance resistance electrode plate array On 3 different angles of combined pressure sense touch screen or the edge on 3 different sides.
4. the compound pressure sensitivity touch screen of capacitance resistance according to claim 1 or 3, it is characterised in that: the capacitance resistance electricity Pole plate and the reference resistance electrode are etched by ITO, and electrocondution slurry printing, conductive fiber weaving manner is constituted.
5. the compound pressure sensitivity touch screen of capacitance resistance according to claim 4, it is characterised in that: further include capacitance measurement electricity Road, resistance measuring circuit and capacitance resistance measurement switching circuit, wherein capacitance measurement circuit includes signal transmitter unit and signal Receiving unit, capacitance resistance measurement switching circuit include the synchronous chopper switch of row chopper switch synchronous with column, resistance measuring circuit Including multiway analog switch, bridge circuit and signal conditioning circuit, signal transmitter unit chopper switch synchronous with row is connected, and row is same Step chopper switch is connected with the side of m row capacitance resistance electrode plate row, the other side of m row capacitance resistance electrode plate row and multichannel mould Quasi- switch is connected, and the side of n column capacitance resistance electrode panel chopper switch synchronous with column is connected, n column capacitance resistance electrode panel The other side be connected with bridge circuit, arrange synchronous chopper switch and be connected respectively with signal receiving unit and multiway analog switch, it is more Path analoging switch is connected with bridge circuit, and the output end of bridge circuit is connected with signal conditioning circuit.
6. the compound pressure sensitivity touch screen of capacitance resistance according to claim 5, it is characterised in that: the bridge circuit is by institute It states 3 reference resistance electrode R1, R3, R4 and measures the Wheatstone bridge of resistance R2 composition, wherein measurement resistance R2 is described more The resistance of the selected a certain capacitance resistance electrode plate row or column of path analoging switch timesharing.
7. the compound pressure sensitivity touch screen of capacitance resistance according to claim 5, it is characterised in that: the signal transmitter unit is every A secondary capacitance resistance electrode plate row (or column) to the direction X(or Y) sends out the driving pulse an of certain frequency, the signal Receiving unit is successively in Y(or X) capacitance of capacitance resistance electrode plate row (or column) is received on direction.
CN201910342723.2A 2019-04-26 2019-04-26 The compound pressure sensitivity touch screen of capacitance resistance Pending CN110045873A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910342723.2A CN110045873A (en) 2019-04-26 2019-04-26 The compound pressure sensitivity touch screen of capacitance resistance

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Application Number Priority Date Filing Date Title
CN201910342723.2A CN110045873A (en) 2019-04-26 2019-04-26 The compound pressure sensitivity touch screen of capacitance resistance

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CN110045873A true CN110045873A (en) 2019-07-23

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US20120218221A1 (en) * 2011-02-28 2012-08-30 Hitachi Displays, Ltd. Touch panel device
CN105426005A (en) * 2015-09-30 2016-03-23 宸鸿科技(厦门)有限公司 Three-dimensional touch panel
CN106325578A (en) * 2015-07-10 2017-01-11 宸鸿科技(厦门)有限公司 Pressure sensing touch panel
US20170371471A1 (en) * 2016-06-22 2017-12-28 Samsung Display Co., Ltd. Touch sensor
CN108037844A (en) * 2017-11-09 2018-05-15 厦门天马微电子有限公司 Touch-control display panel and touch control display apparatus
CN207557905U (en) * 2017-12-13 2018-06-29 南昌欧菲显示科技有限公司 Integrated touch control component, touching display screen and touch-controlled electronic devices

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101261552A (en) * 2007-03-09 2008-09-10 洋华光电股份有限公司 Combined touch control induction device
US20120218221A1 (en) * 2011-02-28 2012-08-30 Hitachi Displays, Ltd. Touch panel device
CN106325578A (en) * 2015-07-10 2017-01-11 宸鸿科技(厦门)有限公司 Pressure sensing touch panel
CN105426005A (en) * 2015-09-30 2016-03-23 宸鸿科技(厦门)有限公司 Three-dimensional touch panel
US20170371471A1 (en) * 2016-06-22 2017-12-28 Samsung Display Co., Ltd. Touch sensor
CN108037844A (en) * 2017-11-09 2018-05-15 厦门天马微电子有限公司 Touch-control display panel and touch control display apparatus
CN207557905U (en) * 2017-12-13 2018-06-29 南昌欧菲显示科技有限公司 Integrated touch control component, touching display screen and touch-controlled electronic devices

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Title
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Application publication date: 20190723

RJ01 Rejection of invention patent application after publication