CN105468220A - Active array based multi-point resistance touch screen - Google Patents
Active array based multi-point resistance touch screen Download PDFInfo
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- CN105468220A CN105468220A CN201510998985.6A CN201510998985A CN105468220A CN 105468220 A CN105468220 A CN 105468220A CN 201510998985 A CN201510998985 A CN 201510998985A CN 105468220 A CN105468220 A CN 105468220A
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- thin film
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input 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
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/045—Digitisers, 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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- General Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention discloses an active array based multi-point resistance touch screen. The touch screen comprises two layers of transparent mediums stacked in an up-down manner, wherein the upper transparent medium layer serves as a touch layer, and the lower transparent medium layer serves as a detection layer; an integral conductive film is arranged on the bottom surface of the touch layer; an active thin film transistor array is arranged on the top surface of the detection layer; electrodes in two directions of the gate and the source of the active thin film transistor array are crossed in a matrix form; and the drain of each thin film transistor is connected with a rectangular conductive film. The conductive film on the bottom surface of the touch layer is connected to a high-level signal, the gates of the active thin film transistors are applied with positive pulse voltages in sequence by a certain frequency, and the sources of the active thin film transistors are applied with a low-level signal; and the signal is scanned in a source electrode direction, and the scanned signal is processed to finally determine accurate positions of a plurality of touch points. According to the invention, each point can be accurately positioned in multi-point touch, so that the multi-point resistance touch screen can be realized.
Description
Technical field
The present invention relates to touch-screen field, specifically a kind of multi-point electric resistance touch screen based on active array.
Background technology
Along with the development of society, the progress of science.Touch screen technology is more and more by the favor of consumers in general, and it all has a wide range of applications in individual, family, social public place.Along with consumer demand, the touch-screen that simultaneously can realize multiple point touching has become the certainty of development.
It is main that traditional electric resistance touch screen technology touches mainly with single-point, is difficult to realize multiple spot and touches simultaneously.Due to the needs of modern social development, the electric resistance touch screen that single-point touches can only be realized and be difficult to meet the demand of people, therefore develop a electric resistance touch screen that simultaneously can realize multiple point touching in the urgent need to.The present invention realizes multi-point electric resistance touch screen based on active thin film transistor (TFT) array, can realize multiple spot well and touch simultaneously, makes touch-screen have good Consumer's Experience.
Summary of the invention the object of this invention is to provide a kind of multi-point electric resistance touch screen based on active array, to solve prior art touch screens multiple point touching Problems existing.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of multi-point electric resistance touch screen based on active array, it is characterized in that: comprise the transparent medium that stacked on top of one another is arranged, its at the middle and upper levels transparent medium as touch layer, lower floor's transparent medium is as detection layers, touch layer bottom surface is provided with all-in-one-piece conducting film, detection layers end face is provided with the active thin film transistor (TFT) array that multiple thin film transistor (TFT) is formed, grid and the source electrode both direction top electrode of active thin film transistor (TFT) array are crossed as matrix form, each direction there is respectively multiple electrode be parallel to each other, the drain electrode of each thin film transistor (TFT) is connected with the conducting film of a rectangle, the conducting film of touch layer bottom surface is connected to high level signal, the grid of active thin film transistor (TFT) applies positive pulse voltage successively with certain frequency on each row, and source electrode adds low level signal, when there being touch to occur, touch layer produces deformation at touch point place, touches rectangular conductive film in detection layers, makes the drain electrode of active thin film transistor (TFT) become high level state, from this direction of source electrode, electrode is scanned, when scanning those row at place, contact, because grid adds high level, make active thin film transistor (TFT) conducting, source electrode becomes high level state, being detected as positive pulse signal through sweep signal, by determining the position of positive pulse signal, the exact position of multiple touch point can being determined.
Described a kind of multi-point electric resistance touch screen based on active array, it is characterized in that: realize multiple point touching based on active thin film transistor (TFT) array, active thin film transistor (TFT) plays the effect of switch, when thin film transistor (TFT) conducting, drain electrode positive pulse signal will pass to source electrode, make can positive pulse signal be detected at source electrode, thus accurately can determine the position of multiple touch point.
Described a kind of multi-point electric resistance touch screen based on active array, is characterized in that: the electrode in the grid of active thin film transistor (TFT) and source electrode both direction is all the conductor wrapped up with insulation course, and has insulation course to wrap up in the upside of active thin film transistor (TFT).
Described a kind of multi-point electric resistance touch screen based on active array, it is characterized in that: when multiple spot touches simultaneously, the accurate location to wherein each point can be realized, and do not have interference each other, therefore based on the multi-point electric resistance touch screen of active array can to realize on touch-screen a little while touch.
Described a kind of multi-point electric resistance touch screen based on active array, is characterized in that: be provided with multiple transparent insulation introns between touch layer and detection layers, controls spacing between touch layer and detection layers by multiple transparent insulation introns.
Advantage of the present invention is:
1, the present invention is based on the multi-point electric resistance touch screen technology of active array;
2, the accurate location to each point can be realized during multiple point touching of the present invention, thus the degree of accuracy of multi-point electric resistance touch screen can be improved;
3, the present invention is the electric resistance touch screen of a novel realized multiple spot.
Accompanying drawing explanation
Fig. 1 touch layer conducting film vertical view.
The decussate texture of active array in Fig. 2 detection layers.
Fig. 3 grid (source electrode) direction one-piece construction cut-open view.
Fig. 4 single-point touches the mode of operation of decoding, wherein:
Fig. 4 a is sweep signal oscillogram, and Fig. 4 b is that single-point touches array structure
The mode of operation of Fig. 5 two touch decoding, wherein:
Fig. 5 a is sweep signal oscillogram, and Fig. 5 b is two touch array structures
The mode of operation of Fig. 6 tri-touch decoding, wherein:
Fig. 6 a is sweep signal oscillogram, and Fig. 6 b is three touch array structures
The mode of operation of Fig. 7 tetra-touch decoding, wherein:
Fig. 7 a is sweep signal oscillogram, and Fig. 7 b is four touch array structures
The mode of operation of Fig. 8 five touch decoding, wherein:
Fig. 8 a is sweep signal oscillogram, and Fig. 8 b is five touch array structures.
Embodiment
As shown in Figure 1-Figure 3, a kind of multi-point electric resistance touch screen based on active array, comprise the transparent medium that stacked on top of one another is arranged, its at the middle and upper levels transparent medium as touch layer 1, lower floor's transparent medium is as detection layers 2, touch layer bottom surface is provided with all-in-one-piece conducting film 3, detection layers end face is provided with the active thin film transistor (TFT) array 6 that multiple thin film transistor (TFT) is formed, grid 4 and the source electrode 5 both direction top electrode of active thin film transistor (TFT) array are crossed as matrix form, each direction there is respectively multiple electrode be parallel to each other, the drain electrode of each thin film transistor (TFT) is connected with the conducting film 7 of a rectangle, the conducting film 3 of touch layer bottom surface is connected to high level signal, the grid 4 of active thin film transistor (TFT) applies positive pulse voltage successively with certain frequency on each row, and source electrode 5 adds low level signal, when there being touch to occur, touch layer 1 produces deformation at touch point place, touch rectangular conductive film 7 in detection layers 2, make the drain electrode 7 one-tenth high level state of active thin film transistor (TFT), from this direction of source electrode 5, electrode is scanned, when scanning those row at place, contact, because grid 4 adds high level, make active thin film transistor (TFT) conducting, source electrode 5 one-tenth high level state, being detected as positive pulse signal through sweep signal, by determining the position of positive pulse signal, the exact position of multiple touch point can being determined.
Multiple point touching is realized based on active thin film transistor (TFT) array, active thin film transistor (TFT) plays the effect of switch, and when thin film transistor (TFT) conducting, 7 positive pulse signals that drain will pass to source electrode 5, make can positive pulse signal be detected at source electrode 5, thus accurately can determine the position of multiple touch point.
The grid 4 of active thin film transistor (TFT) is all the conductor wrapped up with insulation course with the electrode in source electrode 5 both direction, and has insulation course to wrap up in the upside of active thin film transistor (TFT).
When multiple spot touches simultaneously, the accurate location to wherein each point can be realized, and do not have interference each other, therefore based on the multi-point electric resistance touch screen of active array can to realize on touch-screen a little while touch.
Be provided with multiple transparent insulation introns 8 between touch layer 1 and detection layers 2, control spacing between touch layer 1 and detection layers 2 by multiple transparent insulation introns 8.
Embodiment 1
First the present embodiment does monoblock type conducting film as shown in Figure 1 in touch layer bottom surface.Detection layers end face is provided with active thin film transistor (TFT) array as shown in Figure 2, and grid and the source electrode both direction top electrode of active thin film transistor (TFT) array are crossed as matrix form, and the drain electrode of each thin film transistor (TFT) is connected with the conducting film of a rectangle.As shown in Figure 3, be grid (source electrode) direction one-piece construction cut-open view.
Embodiment process:
Intend the transparent medium arranged by two-layer stacked on top of one another, its at the middle and upper levels transparent medium as touch layer, lower floor's transparent medium is as detection layers, touch layer bottom surface is provided with all-in-one-piece conducting film, detection layers end face is provided with active thin film transistor (TFT) array, grid and the source electrode both direction top electrode of active thin film transistor (TFT) array are crossed as matrix form, and the drain electrode of each thin film transistor (TFT) is connected with the conducting film of a rectangle.The conducting film of touch layer bottom surface is connected to high level signal, and the grid (G) of active thin film transistor (TFT) applies positive pulse voltage successively with certain frequency on each row, and source electrode (S) adds low level signal; When there being touch to occur, touch layer produces deformation at touch point place, touch rectangular conductive film in detection layers, the drain electrode of active thin film transistor (TFT) is made to become high level state, from source electrode (S) this direction, electrode is scanned, when scanning those row at place, contact, because grid adds high level, make active thin film transistor (TFT) conducting, source electrode becomes high level state, being detected as positive pulse signal through sweep signal, by determining the position of positive pulse signal, the exact position of multiple touch point can being determined.
As shown in Figure 4, the accurate location of touch point can be realized when single-point touches well.
As shown in Figure 5, when two points touch simultaneously, there are two positive pulse signals in oscillogram, also can realize the accurate location that two points are touched simultaneously well.
As shown in Figure 6, when three points touch simultaneously, there are three positive pulse signals in oscillogram, and can not mutually disturb between three touch points, also can not produce aliasing signal, therefore also can realize the accurate location that three points are touched simultaneously well.
As shown in Figure 7, when four points touch simultaneously, there are four positive pulse signals in oscillogram, and can not mutually disturb between four touch points, also can not produce aliasing signal, therefore also can realize the accurate location that four points are touched simultaneously well.
As shown in Figure 8, when five points touch simultaneously, there are five positive pulse signals in oscillogram, and can not mutually disturb between five touch points, also can not produce aliasing signal, therefore also can realize the accurate location that five points are touched simultaneously well.
Based on the multi-point electric resistance touch screen of active array, when multiple spot touches simultaneously, can realize the accurate location to wherein each point, be therefore a electric resistance touch screen realizing more points.
Claims (5)
1. the multi-point electric resistance touch screen based on active array, it is characterized in that: comprise the transparent medium that stacked on top of one another is arranged, its at the middle and upper levels transparent medium as touch layer, lower floor's transparent medium is as detection layers, touch layer bottom surface is provided with all-in-one-piece conducting film, detection layers end face is provided with the active thin film transistor (TFT) array that multiple thin film transistor (TFT) is formed, grid and the source electrode both direction top electrode of active thin film transistor (TFT) array are crossed as matrix form, each direction there is respectively multiple electrode be parallel to each other, the drain electrode of each thin film transistor (TFT) is connected with the conducting film of a rectangle, the conducting film of touch layer bottom surface is connected to high level signal, the grid of active thin film transistor (TFT) applies positive pulse voltage successively with certain frequency on each row, and source electrode adds low level signal, when there being touch to occur, touch layer produces deformation at touch point place, touches rectangular conductive film in detection layers, makes the drain electrode of active thin film transistor (TFT) become high level state, from this direction of source electrode, electrode is scanned, when scanning those row at place, contact, because grid adds high level, make active thin film transistor (TFT) conducting, source electrode becomes high level state, being detected as positive pulse signal through sweep signal, by determining the position of positive pulse signal, the exact position of multiple touch point can being determined.
2. a kind of multi-point electric resistance touch screen based on active array according to claim 1, it is characterized in that: realize multiple point touching based on active thin film transistor (TFT) array, active thin film transistor (TFT) plays the effect of switch, when thin film transistor (TFT) conducting, drain electrode positive pulse signal will pass to source electrode, make can positive pulse signal be detected at source electrode, thus accurately can determine the position of multiple touch point.
3. a kind of multi-point electric resistance touch screen based on active array according to claim 1, it is characterized in that: the electrode in the grid of active thin film transistor (TFT) and source electrode both direction is all the conductor wrapped up with insulation course, and has insulation course to wrap up in the upside of active thin film transistor (TFT).
4. a kind of multi-point electric resistance touch screen based on active array according to claim 1, it is characterized in that: when multiple spot touches simultaneously, the accurate location to wherein each point can be realized, and do not have interference each other, therefore based on the multi-point electric resistance touch screen of active array can to realize on touch-screen a little while touch.
5. a kind of multi-point electric resistance touch screen based on active array according to claim 1, is characterized in that: be provided with multiple transparent insulation introns between touch layer and detection layers, controls spacing between touch layer and detection layers by multiple transparent insulation introns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510998985.6A CN105468220A (en) | 2015-12-25 | 2015-12-25 | Active array based multi-point resistance touch screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510998985.6A CN105468220A (en) | 2015-12-25 | 2015-12-25 | Active array based multi-point resistance touch screen |
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| CN105468220A true CN105468220A (en) | 2016-04-06 |
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| CN201510998985.6A Pending CN105468220A (en) | 2015-12-25 | 2015-12-25 | Active array based multi-point resistance touch screen |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201465087U (en) * | 2009-05-22 | 2010-05-12 | 比亚迪股份有限公司 | Resistance-type multi touch screen |
| US20110304569A1 (en) * | 2008-12-26 | 2011-12-15 | Nissha Printing Co., Ltd. | Panel Member Having Oscillating Element |
| CN105183266A (en) * | 2015-09-18 | 2015-12-23 | 合肥工业大学 | Multi-point resistive touch screen structure |
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2015
- 2015-12-25 CN CN201510998985.6A patent/CN105468220A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110304569A1 (en) * | 2008-12-26 | 2011-12-15 | Nissha Printing Co., Ltd. | Panel Member Having Oscillating Element |
| CN201465087U (en) * | 2009-05-22 | 2010-05-12 | 比亚迪股份有限公司 | Resistance-type multi touch screen |
| CN105183266A (en) * | 2015-09-18 | 2015-12-23 | 合肥工业大学 | Multi-point resistive touch screen structure |
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Application publication date: 20160406 |