CN101430629A - Touch screen, its trigger equipment and touch screen system - Google Patents
Touch screen, its trigger equipment and touch screen system Download PDFInfo
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- CN101430629A CN101430629A CNA2007100312639A CN200710031263A CN101430629A CN 101430629 A CN101430629 A CN 101430629A CN A2007100312639 A CNA2007100312639 A CN A2007100312639A CN 200710031263 A CN200710031263 A CN 200710031263A CN 101430629 A CN101430629 A CN 101430629A
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Abstract
The embodiment of the invention discloses a touch screen which comprises a touch layer, a substrate layer and a resistance network layer which is arranged between the touch layer and the substrate layer and is attached to the substrate layer. The resistance network layer comprises a thermally sensitive resistance layer and an electrode which is arranged at the edge of the thermally sensitive resistance layer. A touch screen triggering device and a touch screen system are also disclosed by the embodiment of the invention. The touch screen has the advantage of greatly lowering the false trigger probability of the touch screen.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of touch-screen, touch-screen flip flop equipment and touch-screen system.
Background technology
Along with growing with each passing day and the update of input equipment of multimedia information inquiry business, touch-screen is just accepted by increasing people as a kind of input equipment simple to operate, easy to use, it has given the most natural a kind of man-machine interaction mode in the message exchange field, is brand-new multimedia interactive equipment.
The ultimate principle of touch-screen is, during with object (finger, pen etc.) touching touch-screen, after the position that is touched is detected by touch screen controller, with the physical coordinates of described position offer microprocessor (as, CPU) handle.Resistive touch screen is a kind of sensor, and (X, (X Y) represents with voltage VX and the VY that represents X coordinate and Y coordinate physical coordinates Y) with touch point in the rectangular area for it.For with the touch point coordinate reading into the microprocessor on the resistive touch screen, need to use the touch screen controller chip of a special use, this touch screen controller can be measured voltage VX that represents touch point X coordinate and the voltage VY that represents the Y coordinate, and, just know the coordinate of touch point according to this voltage and distance between electrodes relation.
Touch-screen commonly used is made of 3-4 layer transparent thin film layer; bottom is the basic unit that glass or organic glass constitute; top layer is thereby that outside surface is through the smooth scratch resistant plastic layer of cure process; and, also to separate two-layer usually with a kind of resilient material (such as mylar) attached to the two conductive layers of two-layer inside surface up and down.When the pressure (as pushing by nib or finger) that is subjected to when touch screen surface is enough big, states between two conductive layers in the place, touch point and can produce contact.All resistive touch screens all adopt the voltage divider principle to produce to represent the voltage of X coordinate and Y coordinate.As shown in Figure 1, voltage divider is realized by two resistance are connected.Top resistance (R
1) connection reference voltage (V
REF), following resistance (R
2) ground connection.The voltage at two resistance tie point places
Vd and following resistance R
2Resistance be directly proportional.The two conductive layers of resistive touch screen is used for the coordinate of measured X axle and Y direction respectively.As Fig. 2, in the two conductive layers of four-wire type electric resistance touch screen, draw two electrodes at the two ends, the left and right sides of the conductive layer that is used for the measured X coordinate, be designated as X+ and X-, two electrodes are drawn at two ends up and down at the conductive layer that is used to measure the Y coordinate, are designated as Y+ and Y-, for the axial coordinate time of measured X, the electrode that will be used for the conductive layer left side of measured X coordinate is biased to 0V, and the electrode on right side is biased to V
REFConductive layer one end that will be used to measure the Y coordinate is connected to touch screen controller, and the pressure on touch-screen is enough big, makes when coming in contact between two-layer, demarcates from the touch point, and the conductive layer that is biased is separated into two resistance.Resistance between touch point and the earth terminal is equivalent to resistance R in the voltage divider
2At this moment, the voltage that touch screen controller records on biasing layer not is the voltage of the X coordinate of touch point, according to voltage and touch point between 0 voltage electrode apart from the characteristic that is directly proportional, can obtain the X coordinate of touch point.In like manner, in order to measure the coordinate time of Y direction, the electrode that will be used to measure the conductive layer downside of Y coordinate is biased to 0V, and the electrode of upside is biased to V
REFConductive layer one end that will be used for the measured X coordinate is connected to touch screen controller, and the pressure on touch-screen is enough big, makes when coming in contact between two-layer, demarcates from the touch point, and the conductive layer that is biased is separated into two resistance.Resistance between touch point and the earth terminal is equivalent to resistance R in the voltage divider
2At this moment, the voltage that touch screen controller records on biasing layer not is the voltage of touch point Y coordinate, according to voltage and touch point between 0 voltage electrode apart from the characteristic that is directly proportional, can obtain the Y coordinate of touch point.
At present, this touch screen technology maturation, cost is lower.But the ultimate principle of this touch-screen is during with object (finger, pen etc.) touching touch-screen, after the position that is touched is detected by touch screen controller, with the physical coordinates of described position offer microprocessor (as, CPU) handle.As long as the touched conductive layer that makes of touch-screen contacts, touch-screen promptly can be triggered, and therefore, this touch-screen usually causes false triggering.
Summary of the invention
Given this, the embodiment of the invention provides a kind of touch-screen, touch-screen flip flop equipment and touch-screen system.Greatly reduce the possibility of touch-screen generation false triggering.
In order to solve the problems of the technologies described above, the embodiment of the invention provides a kind of touch-screen, described touch-screen comprises touch layer, substrate layer and between described touch layer and described substrate layer and attached to the resistor network layer on the described substrate layer, described resistor network layer comprises thermal resistor layer and is arranged on the electrode at described thermal resistor layer edge.
Accordingly, the embodiment of the invention provides a kind of touch-screen flip flop equipment, and described touch-screen flip flop equipment comprises drive unit and the light source generating means by described driving device controls that is connected with described drive unit.
Accordingly, the embodiment of the invention provides a kind of touch-screen system, described touch-screen system comprises: touch-screen flip flop equipment, touch-screen and touch screen controller, it is characterized in that described touch-screen flip flop equipment comprises switchgear and the light source generating means that is connected with described switchgear;
Described touch-screen comprises touch layer, substrate layer and between described touch layer and described substrate layer and attached to the resistor network layer on the described substrate layer, described resistor network layer comprises thermal resistor layer and is arranged on the electrode at described thermal resistor layer edge that described electrode is connected with described touch screen controller.
The embodiment of the invention adopts the inductive means of thermistor as touch-screen, adopt the triggering source of thermal light source as described thermistor, the a certain position that shines thermistor when thermal light source changes the resistance value of this position, and when the voltage that touch screen controller detects this position changed, touch screen controller can obtain the touch point position coordinate by the voltage of measuring this position.The embodiment of the invention needs thermal light source to shine on the thermistor, just can trigger touch-screen work, and this has just been avoided the touched and false triggering that causes of screen, in addition, illumination can take place under contact and non-contacting situation, and therefore, the embodiment of the invention has also been expanded the triggering mode of touch-screen.
Description of drawings
Fig. 1 is a principle schematic of voltage divider;
Fig. 2 is the distribution of electrodes synoptic diagram of the two conductive layers of four-wire type electric resistance touch screen;
Fig. 3 is a screen surface structure distribution schematic diagram of the touch-screen of the embodiment of the invention;
Fig. 4 is the distribution of electrodes synoptic diagram of thermal resistor layer among Fig. 3;
Fig. 5 is that an example structure of the nib of laser pen of the present invention is formed synoptic diagram;
Fig. 6 is an arrangement synoptic diagram of supporting the array resistor network layer of multiple spot triggering;
Fig. 7 is the catenation principle synoptic diagram of touch-screen and temperature compensation network;
Fig. 8 is the example structure synoptic diagram of Fig. 7.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done further in detail clearly explanation.
An embodiment of touch-screen system of the present invention comprises touch-screen flip flop equipment, touch-screen and touch screen controller, and described touch-screen flip flop equipment comprises switchgear and the light source generating means that is connected with described switchgear; Described touch-screen comprises touch layer, substrate layer and between described touch layer and described substrate layer and attached to the resistor network layer on the described substrate layer, described resistor network layer comprises thermal resistor layer and is arranged on the electrode at described thermal resistor layer edge that described electrode is connected with described touch screen controller.The embodiment of the invention adopts the inductive means of thermistor as touch-screen, adopt the triggering source of thermal light source as described thermistor, the a certain position that shines thermistor when thermal light source changes the resistance value of this position, and when the voltage that touch screen controller detects this position changes, touch screen controller can obtain the touch point position coordinate by the voltage of measuring this position, touch screen controller sends to microprocessor (as CPU) with the position coordinates that obtains and carries out respective handling, can trigger touch-screen work.Because the touch-screen of present embodiment induction takes place rather than by touching the levels conductive layer is come in contact to produce induction according to the illumination heat, therefore, the touch of present embodiment has avoided producing because of screen is touched the situation of false triggering.
Fig. 3 is a screen surface structure distribution schematic diagram of the touch-screen of present embodiment.As shown in Figure 3, the touch-screen of present embodiment comprises touch layer 1, vacuum heat-insulating layer 2, thermal resistor layer 3 and substrate layer 4 from top to bottom successively, wherein, described touch layer 1 is a hyaline layer, can select for use transparency good, the material that hardness is high is made, and as plastics or glass, touch layer has anti-skidding scratch resistant advantage.Described substrate layer 4 is the septum pellucidum thermosphere, can select for use glass or organic glass to make.Described thermal resistor layer 3 is coated on the described substrate layer 4 by film preparing technology, and thermal resistor layer 3 can be selected materials such as vanadium oxide, polysilicon, poly-SiGe or titanium for use.The thin film preparation process that comparative maturity has been arranged at present, as magnetic control in oxygen atmosphere and radio-frequency sputtering, vacuum evaporation and electron beam evaporation, sol-gel process, chemical precipitation, burning, pulse laser accumulation, ion beam sputtering etc.Wherein the film of ion beam sputtering preparation is even, stains and lacks, and with the substrate strong adhesion, and combines with silicon integrated circuit technology easily.Vanadium oxide (V with ion beam sputtering
2O
5) film can reach the average crystal grain of average 52nm, resistivity can reach tens Ω cm, has good optical characteristic and higher temperature-coefficient of electrical resistance.In the present embodiment, the thickness of described thermal resistor layer at 0.5 μ M between the 1 μ M.The thickness of described vacuum heat-insulating layer at 1 μ M between the 2 μ M.Vacuum heat-insulating layer 2 and substrate layer 4 can effectively reduce the heat dissipation power of touch-screen, improve the sensing capabilities of touch-screen.
For realizing the purpose of detected touch point position, present embodiment is provided with electrode around thermal resistor layer, and Fig. 4 is the distribution of electrodes synoptic diagram of thermal resistor layer among Fig. 3.As shown in Figure 4, draw two electrodes, be designated as X+ and X-at the two ends, the left and right sides of thermal resistor layer, draw two electrodes at the two ends up and down of thermal resistor layer, be designated as Y+ and Y-, for the axial coordinate time of measured X, the electrode in thermal resistor layer left side is biased to 0V, and the electrode on right side is biased to V
REFThe Y+ end (also can be the Y-end in the specific implementation) of thermal resistor layer is connected to touch screen controller, the a certain position that shines thermistor when thermal light source makes the resistance value of this position reach activation threshold value, demarcate from the touch point, the thermo-sensitive conductive layer is separated into two resistance in the X-direction of biasing.Resistance between touch point and the earth terminal is equivalent among Fig. 1 resistance R in the voltage divider
2At this moment, the voltage that touch screen controller records on the Y+ end is the voltage of the X coordinate of touch point, to the characteristic that distance between 0 voltage electrode is directly proportional, can obtain the X coordinate of touch point according to voltage and touch point.In like manner, in order to measure the coordinate time of Y direction, the electrode of thermal resistor layer downside is biased to 0V, the electrode of upside is biased to V
REFThe X+ end (also can be the X-end in the specific implementation) of thermal resistor layer is connected to touch screen controller, the a certain position that shines thermistor when thermal light source makes the resistance value of this position reach activation threshold value, demarcate from the touch point, the thermo-sensitive conductive layer is separated into two resistance in the Y direction of biasing.Resistance between touch point and the earth terminal is equivalent among Fig. 1 resistance R in the voltage divider
2At this moment, the voltage that touch screen controller records on the X+ end is the voltage of the Y coordinate of touch point, to the characteristic that distance between 0 voltage electrode is directly proportional, can obtain the Y coordinate of touch point according to voltage and touch point.
The touch-screen flip flop equipment of present embodiment can be given touch-screen by the light source generator transmitting illuminant of light source generating means, so that touch-screen triggers for having the active or passive light source generating means of switchgear.For example, can adopt the LASER Light Source generating means, because laser direction is good, be not easy to be subjected to the interference of other light, very strong directivity is arranged, monochromaticity and coherence are fabulous.Can obtain high light intensity.In the specific implementation, generating device of laser can be designed as laser pen, such as semiconductor ruddiness pen or green glow pen, when needs trigger touch-screen, open the switch of laser pen, make laser pen emission laser beam, when a certain position of laser beam irradiation to touch-screen, when making the resistance value of this position reach activation threshold value, this position promptly is triggered.Because the irradiation of light source can realize by contactless mode, therefore, the touch-screen of present embodiment can be supported contactless remote triggering, because it is contactless triggering, that the touch-screen screen is not easy is stained, make touch-screen can be in the abominable place of environment (such as, factory, maintenance depot etc.) owing to be contactless, therefore can not exist pen to touch screen and cause the defective of false triggering.In addition, for improving the accuracy that triggers, one frequency modulated light sheet can be set in the beam emissions passage of laser pen, when the switch of control light barrier closure is in off-state, laser pen emitted light beams intensity is less, the light beam irradiates of this intensity can not make during to touch-screen touch-screen trigger, so this light beam can be used for accurately indicating touch point position.When the switch of control light barrier closure was in conducting state, it is big that laser pen emitted light beams intensity becomes, and the light beam irradiates of this intensity just can make the touch-screen triggering during to touch-screen.
In addition, in specific implementation, be the sense of reality that experience is write, can use the laser pen of contact to trigger touch-screen, the laser pen of contact can be made improvements by above-mentioned semiconductor ruddiness pen or green glow pen, and Fig. 5 is that an example structure of the nib of laser pen of the present invention is formed synoptic diagram.As shown in Figure 5, the nib of present embodiment comprises first reed 10, second reed 11, contact head 12 and Laser emission mouth 13, wherein said first reed 10 links to each other with the optical beam generating device of laser pen respectively with second reed 11, when contact head 12 when the touch-screen panel is exerted pressure, first reed 10 and second reed 11 are under the effect of pressure, contact with each other, thereby trigger laser pen optical beam generating device emission light beam 14.
Another embodiment of touch-screen system of the present invention comprises touch-screen flip flop equipment, touch-screen and touch screen controller, and described touch-screen flip flop equipment comprises switchgear and the light source generating means that is connected with described switchgear; Described touch-screen comprises touch layer, substrate layer and between described touch layer and described substrate layer and attached to the resistor network layer on the described substrate layer, the described resistor network layer of described resistor network layer formed with array format by a plurality of independently resistor network layers, wherein each independently the resistor network layer comprise thermal resistor layer and be arranged on the electrode at described thermal resistor layer edge that described electrode is connected with described touch screen controller.Fig. 6 is an arrangement synoptic diagram of supporting the array resistor network layer of multiple spot triggering.As shown in Figure 6, the resistor network layer of present embodiment and the difference of first embodiment are, resistor network layer 20 is formed with array format by a plurality of independently resistor network layer 21, wherein, each independently resistor network layer 21 all be equivalent to a variable resistor, therefore, the touch-screen system of present embodiment can support multiple spot to trigger.
In another embodiment of touch-screen system of the present invention, set up temperature compensation network in the touch-screen periphery, the amplitude that the temperature of scalable touch-screen flip flop equipment transmitting illuminant changes the thermistor resistance improves signal to noise ratio (S/N ratio).Fig. 7 is the catenation principle synoptic diagram of touch-screen and temperature compensation network.Fig. 8 is the example structure synoptic diagram of Fig. 7.As shown in Figure 8, the thermistor resistance of the described NTC of temperature compensation network use negative temperature coefficient NTC thermistor is exponential type decline with the rising of temperature, can be used for regulating the driving voltage V of control touch-screen
T
The embodiment of the invention adopts the inductive means of thermistor as touch-screen, adopt the triggering source of thermal light source as described thermistor, the a certain position that shines thermistor when thermal light source changes the resistance value of this position, and when the voltage that touch screen controller detects this position changed, touch screen controller can obtain the touch point position coordinate by the voltage of measuring this position.The embodiment of the invention needs thermal light source to shine on the thermistor, just can trigger touch-screen work, and this has just been avoided the touched and false triggering that causes of screen, in addition, illumination can take place under contact and non-contacting situation, and therefore, the embodiment of the invention has also been expanded the triggering mode of touch-screen.
More than cited only be preferred embodiment of the present invention, can not limit the present invention's interest field certainly with this, therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (10)
1, a kind of touch-screen, comprise touch layer, substrate layer and between described touch layer and described substrate layer and attached to the resistor network layer on the described substrate layer, it is characterized in that described resistor network layer comprises thermal resistor layer and is arranged on the electrode at described thermal resistor layer edge.
2, touch-screen according to claim 1 is characterized in that, also comprises vacuum heat-insulating layer between described touch layer and the described resistor network layer.
3, touch-screen according to claim 2 is characterized in that, the thickness of described vacuum heat-insulating layer at 1 μ M between the 2 μ M.
4, touch-screen according to claim 1 is characterized in that, described touch-screen is connected with temperature compensation network.
5, touch-screen according to claim 1 is characterized in that, described resistor network layer is formed with array format by a plurality of independently resistor network layers.
According to the described touch-screen of claim 1-5, it is characterized in that 6, the material that described thermal resistor layer is used is vanadium oxide, polysilicon, poly-SiGe or titanium.
7, touch-screen according to claim 6 is characterized in that, the thickness of described thermal resistor layer at 0.5 μ M between the 1 μ M.
8, a kind of touch-screen flip flop equipment is characterized in that, comprises switchgear and the light source generating means that is connected with described switchgear.
9, touch-screen flip flop equipment according to claim 8 is characterized in that, described light source generating means is a laser generator.
10, a kind of touch-screen system comprises: touch-screen flip flop equipment, touch-screen and touch screen controller is characterized in that described touch-screen flip flop equipment comprises switchgear and the light source generating means that is connected with described switchgear;
Described touch-screen comprises touch layer, substrate layer and between described touch layer and described substrate layer and attached to the resistor network layer on the described substrate layer, described resistor network layer comprises thermal resistor layer and is arranged on the electrode at described thermal resistor layer edge that described electrode is connected with described touch screen controller.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100312639A CN101430629A (en) | 2007-11-06 | 2007-11-06 | Touch screen, its trigger equipment and touch screen system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100312639A CN101430629A (en) | 2007-11-06 | 2007-11-06 | Touch screen, its trigger equipment and touch screen system |
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| CN101430629A true CN101430629A (en) | 2009-05-13 |
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| CNA2007100312639A Pending CN101430629A (en) | 2007-11-06 | 2007-11-06 | Touch screen, its trigger equipment and touch screen system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102591547A (en) * | 2012-02-07 | 2012-07-18 | 深圳市金立通信设备有限公司 | Resistive touch screen capable of preventing handwriting trajectory deviation |
| CN103576956A (en) * | 2012-07-31 | 2014-02-12 | 宸鸿科技(厦门)有限公司 | Temperature-sensitive type touch control panel, manufacturing method for same and detecting method for temperature-sensitive type touch control panel |
| CN105426005A (en) * | 2015-09-30 | 2016-03-23 | 宸鸿科技(厦门)有限公司 | Three-dimensional touch panel |
| CN106201038A (en) * | 2015-04-30 | 2016-12-07 | 宸展光电（厦门）有限公司 | A kind of touch control display apparatus and there is the ATM of this touch control display apparatus |
| CN106339144A (en) * | 2016-09-09 | 2017-01-18 | 京东方科技集团股份有限公司 | Laser touch panel, display equipment, display system and laser touch method |
| CN113296625A (en) * | 2020-02-24 | 2021-08-24 | 高尔科技股份有限公司 | Double-sided photo-thermal reaction selection lock and manufacturing method thereof |
| CN113407069A (en) * | 2020-03-17 | 2021-09-17 | 高尔科技股份有限公司 | Infrared thermal reaction type control panel |
-
2007
- 2007-11-06 CN CNA2007100312639A patent/CN101430629A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102591547B (en) * | 2012-02-07 | 2015-04-08 | 深圳市金立通信设备有限公司 | Resistive touch screen capable of preventing handwriting trajectory deviation |
| CN102591547A (en) * | 2012-02-07 | 2012-07-18 | 深圳市金立通信设备有限公司 | Resistive touch screen capable of preventing handwriting trajectory deviation |
| CN103576956A (en) * | 2012-07-31 | 2014-02-12 | 宸鸿科技(厦门)有限公司 | Temperature-sensitive type touch control panel, manufacturing method for same and detecting method for temperature-sensitive type touch control panel |
| CN103576956B (en) * | 2012-07-31 | 2016-08-24 | 宸鸿科技(厦门)有限公司 | Temperature induction type contact panel and manufacture method thereof and method for detecting |
| CN106201038A (en) * | 2015-04-30 | 2016-12-07 | 宸展光电（厦门）有限公司 | A kind of touch control display apparatus and there is the ATM of this touch control display apparatus |
| CN105426005B (en) * | 2015-09-30 | 2018-09-28 | 宸鸿科技(厦门)有限公司 | three-dimensional touch panel |
| CN105426005A (en) * | 2015-09-30 | 2016-03-23 | 宸鸿科技(厦门)有限公司 | Three-dimensional touch panel |
| CN106339144A (en) * | 2016-09-09 | 2017-01-18 | 京东方科技集团股份有限公司 | Laser touch panel, display equipment, display system and laser touch method |
| CN106339144B (en) * | 2016-09-09 | 2018-01-30 | 京东方科技集团股份有限公司 | Laser contact panel, display device, display system and laser touch control method |
| WO2018045745A1 (en) * | 2016-09-09 | 2018-03-15 | 京东方科技集团股份有限公司 | Laser touch panel, display device, display system and laser touch method |
| US10444929B2 (en) | 2016-09-09 | 2019-10-15 | Boe Technology Group Co., Ltd. | Laser touch panel, display device, display system and laser touch method |
| CN113296625A (en) * | 2020-02-24 | 2021-08-24 | 高尔科技股份有限公司 | Double-sided photo-thermal reaction selection lock and manufacturing method thereof |
| CN113407069A (en) * | 2020-03-17 | 2021-09-17 | 高尔科技股份有限公司 | Infrared thermal reaction type control panel |
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Open date: 20090513 |