CN109933243A - Touch screen - Google Patents
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- CN109933243A CN109933243A CN201910281565.4A CN201910281565A CN109933243A CN 109933243 A CN109933243 A CN 109933243A CN 201910281565 A CN201910281565 A CN 201910281565A CN 109933243 A CN109933243 A CN 109933243A
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- touch screen
- sensor unit
- sensor
- touch
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Abstract
The invention discloses a kind of touch screens, it include: substrate and sensor unit, the lower section of the substrate is arranged in the sensor unit, the sensor unit includes multiple sensors of array arrangement, the sensor unit is used to monitor the variation of the characterisitic parameter of the sensor, and position and the size of the touch pressure that the substrate is subject to are determined according to the variation of the characterisitic parameter.The functions such as FIC, 3D Touch, full frame fingerprint recognition may be implemented in touch screen disclosed by the invention.
Description
Technical field
The present invention relates to field of display technology, and in particular to a kind of touch screen.
Background technique
Compared with conventional screen, flexible screen is with the obvious advantage, not only more frivolous in volume, also below original device in power consumption
Part facilitates the cruising ability of lifting means, while characteristic flexible based on its, that flexibility is good, and robustness is also significantly
Higher than previous screen, the probability of equipment accidental injury, therefore flexible Organic Light Emitting Diode (Organic Light- are reduced
Emitting Diode, abbreviation OLED) attention by panel vendor.And with screen comprehensively and ultra-thin etc. demand, function
Integrated demand is more more and more intense, complete embedded (Full In-Cell, abbreviation FIC), three-dimensional touch (Three
Dimensional Touch, abbreviation 3D Touch), the functions such as full frame fingerprint recognition be the indispensable function of present mobile phone, because
This industry is badly in need of a kind of flexible touch screen for being able to achieve above-mentioned function.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, the first purpose of this invention is to propose a kind of touch screen, FIC, 3D Touch, full frame finger may be implemented
The functions such as line identification.
To achieve the above object, embodiment of the invention discloses a kind of touch screens, comprising: substrate；Sensor unit, institute
The lower section that the substrate is arranged in sensor unit is stated, the sensor unit includes multiple sensors of array arrangement, described
Sensor unit is used to monitor the variation of the characterisitic parameter of the sensor, and according to the variation of characterisitic parameter determination
The position for the touch pressure that substrate is subject to and size.
Touch screen according to an embodiment of the present invention, in the biography of multiple sensors composition of the lower section of substrate setting array arrangement
Sensor cell, sensor unit monitor sensor characterisitic parameter variation, and according to the variation of characterisitic parameter determine substrate by
The position of the touch pressure arrived and size, and then can realize the functions such as FIC, 3D touch, full frame fingerprint recognition.
In addition, touch screen according to the above embodiment of the present invention, can also have the following additional technical features:
Further, the characterisitic parameter is saturation current.
Further, the sensor unit further include: selection signal line, for the selection signal according to input, control
The sensor of the row is opened.
Further, the sensor unit further include: test signal wire, for monitoring the sensor of column
The variation of characterisitic parameter.
Further, the sensor unit is also used to: according to the position of the touch pressure and size, identifying touch
The fingerprint of finger.
Further, the sensor unit is also used to: monitor the saturation current of the multiple sensor and value；According to
The position of the touch pressure saturation current and that the determining substrate of value is subject to and size；According to the position of the touch pressure
It sets and size, shows the function choosing-item of corresponding application icon.
Further, the sensor unit further include: short circuit fault, for each test signal wire is short-circuit.
Further, the short circuit fault is multiplexer.
Further, the sensor is thin film transistor (TFT) or resistance.
Further, the touch screen is indium gallium zinc oxide touch screen.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the touch screen of the embodiment of the present invention；
Fig. 2 is the transfer characteristic curve figure of sensor of the invention；
Fig. 3 is the structural schematic diagram of the sensor unit of the embodiment of the present invention.
Appended drawing reference:
1- sensor unit；100- sensor；2- substrate.
Specific embodiment
The embodiment of the present invention is described below in detail, the example of embodiment is shown in the accompanying drawings, wherein identical from beginning to end
Or similar label indicates same or similar element or element with the same or similar functions.It is retouched below with reference to attached drawing
The embodiment stated is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
A kind of touch screen of the embodiment of the present invention is described below in conjunction with attached drawing.
Fig. 1 is the structural schematic diagram of the touch screen of the embodiment of the present invention.As shown in Figure 1, embodiment of the invention discloses
A kind of touch screen, comprising: substrate 2；The lower section of substrate 2 is arranged in sensor unit 1, sensor unit 1, and sensor unit 1 wraps
Multiple sensors (Sensor) 100 of array arrangement are included, sensor unit 1 is used to monitor the change of the characterisitic parameter of sensor 100
Change, and determines position and the size of the touch pressure that substrate 2 is subject to according to the variation of characterisitic parameter.
Touch screen according to an embodiment of the present invention, in the biography of multiple sensors composition of the lower section of substrate setting array arrangement
Sensor cell, sensor unit monitor sensor characterisitic parameter variation, and according to the variation of characterisitic parameter determine substrate by
The position of the touch pressure arrived and size, and then can realize the functions such as FIC, 3D touch, full frame fingerprint recognition.
According to one embodiment of present invention, characterisitic parameter concretely saturation current.
According to one embodiment of present invention, the concretely thin film transistor (TFT) (Thin-film of sensor 100
Transistor, abbreviation TFT) or resistance.
Fig. 2 is the transfer characteristic curve figure of sensor of the invention.As shown in Fig. 2, a figure in left side is 2 distortion of substrate
The transfer characteristic curve figure of the thin film transistor (TFT) of preceding test, the b figure on right side are the thin film transistor (TFT) of test after the distortion of substrate 2
Transfer characteristic curve figure, wherein abscissa is saturation current Id, and ordinate is saturation voltage VGS.It can be seen that saturation current Id
In certain VGSIn the case of, distortion front and back varies widely, the reason is that because there is carefully the microstructure of active layer after the distortion of substrate 2
Microvariations causes defect or interface state density to have slight change, abnormal so as to cause saturation current Id, passes through detection saturation electricity
Flow the variation of Id, so that it may judge size, the position, area equicorrelated case of touch pressure.
Transfer characteristic curve figure can be seen that not all voltage all and be and is optimal according to fig. 2, such as VGSOptimal value
It is adjustable according to the actual situation.
Fig. 3 is the structural schematic diagram of the sensor unit of the embodiment of the present invention.As shown in figure 3, sensor unit further include:
Selection signal line (such as Gn-1, Gn and Gn+1 in Fig. 3), for the selection signal according to input, control is expert at (such as n-
1 row, n row, n+1 row) sensor 100 open.
Further, as shown in figure 3, sensor unit further include: test signal wire (such as Sm-1, Sm and Sm in Fig. 3
+ 1), for monitoring the variation of the characterisitic parameter of the sensor 100 of column (such as m-1 column, m column, m+1 column).
As shown in figure 3, the most basic unit of sensor 100 is a TFT, wherein the area of the active layer of basic unit is most
Bigization design is conducive to the sensibility for increasing sensor electric current when deformation occurs, the TFT of all the sensors (Sensor)
Source level (S) ground connection or connect the common electrode of some fixed voltage.
It (can be array substrate row driving (Gate Driver onArray, abbreviation GOA that Gn, which is selection signal line, in Fig. 3
Driving), or glass flip chip encapsulates (Chip on Glass, abbreviation COG) drive scheme), Sm signal wire is test signal
Line.The effect of Gn is that the sensor (Sensor, such as TFT) of certain a line is selected to open, and passes through system testing n row, the TFT of m column
Current signal, the comparison judgement (this function is exactly constantly to monitor certain specific TFT characteristics) by system, goes judgement (n, m)
Whether position has deformation, to judge whether some position has touch (touch), and position touched etc..
Position deformation is fixed in a period of time touch panel (panel) generation that works in order to prevent or TFT property retrogradation is led
The wrong report point of cause, system compartment time will do it from proofreading, to guarantee the precision of sensor.
According to one embodiment of present invention, sensor unit 1 is also used to: according to the position of touch pressure and size, being known
The fingerprint of finger Chu not touched.
According to one embodiment of present invention, sensor unit 1 is also used to: monitoring the saturation current of multiple sensors 100
And value；According to the position of touch pressure saturation current and that the determining substrate 2 of value is subject to and size；According to the position of touch pressure
It sets and size, shows the function choosing-item of corresponding application icon.
According to one embodiment of present invention, sensor unit 1 further include: short circuit fault is used for each test signal wire
Short circuit.
According to one embodiment of present invention, short circuit fault concretely multiplexer.
Specific implementation between the touch screen different mode of the embodiment of the present invention is as follows:
(1) it fingerprint recognition: because the protrusion of fingerprint and the size of recess are smaller, can be tested out according to system
The curent change situation come goes to judge the spacing of sensor, and the smaller measuring accuracy of spacing is higher.
(2) three-dimensional touch (3DTouch): for showing the function choosing-item of corresponding application icon, schematic diagram shown in Fig. 3
Gn-1, Gn, Gn+1 open simultaneously (for example, can be more with 3 rows, GOA perhaps COG mode) by inside IC or
Some devices (such as multiplexer (Multiplexer, referred to as: MUX)) are made on glass by Sm-1, Sm, Sm+1 short circuit are (with 3
Column are for example, can also be more), only test the saturation current summation of this 9 parallel connection TFT, response speed not only fast power consumption but also low.
According to one embodiment of present invention, the touch screen of the embodiment of the present invention concretely indium gallium zinc oxide
(Indium gallium zinc oxide, abbreviation IGZO) touch screen.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
It can be combined in any suitable manner in a or multiple embodiment or examples.In addition, without conflicting with each other, the technology of this field
The feature of different embodiments or examples described in this specification and different embodiments or examples can be combined by personnel
And combination.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of touch screen characterized by comprising
Substrate；
The lower section of the substrate is arranged in sensor unit, the sensor unit, and the sensor unit includes array arrangement
Multiple sensors, the sensor unit is used to monitor the variation of the characterisitic parameter of the sensor, and according to the characteristic
The variation of parameter determines position and the size for the touch pressure that the substrate is subject to.
2. touch screen according to claim 1, which is characterized in that the characterisitic parameter is saturation current.
3. touch screen according to claim 2, which is characterized in that the sensor unit further include:
Selection signal line controls the sensor of the row and opens for the selection signal according to input.
4. touch screen according to claim 2, which is characterized in that the sensor unit further include:
Test signal wire, the variation of the characterisitic parameter of the sensor for monitoring column.
5. touch screen according to claim 2, which is characterized in that the sensor unit is also used to:
According to the position of the touch pressure and size, the fingerprint for touching finger is identified.
6. touch screen according to claim 4, which is characterized in that the sensor unit is also used to:
Monitor the saturation current of the multiple sensor and value；
According to the position of the touch pressure saturation current and that the determining substrate of value is subject to and size；
According to the position of the touch pressure and size, the function choosing-item of corresponding application icon is shown.
7. touch screen according to claim 6, which is characterized in that the sensor unit further include:
Short circuit fault, for each test signal wire is short-circuit.
8. touch screen according to claim 7, which is characterized in that the short circuit fault is multiplexer.
9. touch screen according to claim 1, which is characterized in that the sensor is thin film transistor (TFT) or resistance.
10. touch screen according to claim 1, which is characterized in that the touch screen is indium gallium zinc oxide touch screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910281565.4A CN109933243A (en) | 2019-04-09 | 2019-04-09 | Touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910281565.4A CN109933243A (en) | 2019-04-09 | 2019-04-09 | Touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109933243A true CN109933243A (en) | 2019-06-25 |
Family
ID=66989620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910281565.4A Pending CN109933243A (en) | 2019-04-09 | 2019-04-09 | Touch screen |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1985263A (en) * | 2004-04-01 | 2007-06-20 | 奇梦达股份公司 | Force sensor comprising organic field effect transistors and pressure sensor, position sensor and fingerprint sensor that are based on said force sensor |
| CN105628262A (en) * | 2015-12-20 | 2016-06-01 | 华南理工大学 | Thin film transistor pressure sensor based on organic elastomer gate insulating layer |
| CN106066224A (en) * | 2016-06-03 | 2016-11-02 | 京东方科技集团股份有限公司 | Pressure transducer, touch base plate and touch control display apparatus |
| CN107462350A (en) * | 2017-08-17 | 2017-12-12 | 京东方科技集团股份有限公司 | A kind of piezoelectric transducer, pressure-detecting device, preparation method and detection method |
-
2019
- 2019-04-09 CN CN201910281565.4A patent/CN109933243A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1985263A (en) * | 2004-04-01 | 2007-06-20 | 奇梦达股份公司 | Force sensor comprising organic field effect transistors and pressure sensor, position sensor and fingerprint sensor that are based on said force sensor |
| CN105628262A (en) * | 2015-12-20 | 2016-06-01 | 华南理工大学 | Thin film transistor pressure sensor based on organic elastomer gate insulating layer |
| CN106066224A (en) * | 2016-06-03 | 2016-11-02 | 京东方科技集团股份有限公司 | Pressure transducer, touch base plate and touch control display apparatus |
| CN107462350A (en) * | 2017-08-17 | 2017-12-12 | 京东方科技集团股份有限公司 | A kind of piezoelectric transducer, pressure-detecting device, preparation method and detection method |
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Application publication date: 20190625 |