CN101989140A - Embedded sensing input display device capable of improving aperture opening ratio - Google Patents
Embedded sensing input display device capable of improving aperture opening ratio Download PDFInfo
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- CN101989140A CN101989140A CN2009101649155A CN200910164915A CN101989140A CN 101989140 A CN101989140 A CN 101989140A CN 2009101649155 A CN2009101649155 A CN 2009101649155A CN 200910164915 A CN200910164915 A CN 200910164915A CN 101989140 A CN101989140 A CN 101989140A
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Abstract
The invention discloses an embedded sensing input display device capable of improving aperture opening ratio, which in parallel connects at least two sensing elements of adjacent pixels separated by a gate line, and together connects to a switching transistor, so that the switching transistor can be controlled by the gate line to transmit sensing signals output by the sensing elements to a reading line to detect touch events and positions. In such a way, the size of each sensing element can be reduced so as to effectively improve the aperture opening ratio of a panel while maintaining the same sensing signals.
Description
Technical field
The present invention relates to a kind of touch control display device, particularly a kind of embedded (In-Cell) induction input display device that improves aperture opening ratio.
Background technology
In recent years, the application of contact panel can be said so more and more widely, and the contact panel kind of development is a lot, for example resistance-type, condenser type, acoustic wave, infrared-type, contact panel such as embedded, and wherein the technology with embedded touch enjoys attention.Compared to contact panels such as traditional resistance-type or condenser types, all need extra panel circuit to be installed on the display panel; And the embedded touch panel directly is integrated in the display panel touch controllable function is built-in, and no longer needs extra panel, so use increasingly extensive.
At present, most embedded touch panel all is the optical profile type sensing, and it is by being embedded in the sensing unit in the display panel, and this sensing unit can comprise light sensing element (photo sensor) and decide the position of touch incident in order to the change that detects photocurrent.This sensing unit can be thin film transistor (TFT) (TFT) sensing unit 10, as shown in Figure 1, is made up of switching transistor (SW TFT) 12 and sensing element, and this sensing element can be sensitization transistor (Photo TFT) 14; When switching transistor 12 was opened, the photo-signal that sensitization transistor 14 produces can spread out of through read line 16, and when irradiation intensity changed, the photocurrent size also just dissimilated, so can be used to interpretation touch-control incident and find out position of touch.
Yet; for the IC number that reads that will read photo-signal reduces by half, the above-mentioned contact panel timesharing type of drive of can arranging in pairs or groups again usually, as shown in Figure 2; the drive characteristic of utilizing timesharing with about the photosensor signal read line 16 of two parts link together, read IC with minimizing.When a gate line is opened, have only the photosensor signal of left-hand component or right-hand component to be read out on the horizontal direction, and certain is also arranged on the adjacent gate polar curve is not act on one side, but consider visual effect, it is the same that the pixel layout of same color must keep, therefore these do not have the optical sensor area occupied of effect not to be omitted, and make the part aperture opening ratio to be sacrificed.
In view of this, the present invention promptly proposes a kind of embedded induction input display device that improves aperture opening ratio, to overcome above-mentioned described these problems.
Summary of the invention
Fundamental purpose of the present invention is to propose a kind of embedded induction input display device that improves aperture opening ratio, it is according to the difference of the touch sensing resolution of vertical direction, the sensing element of at least two adjacent gate lines pixels is connected in parallel, an and shared switching transistor, the current summation of sensing element when in parallel, so sensing element just can be done forr a short time, so can improve the panel aperture opening ratio under the situation of keeping identical current signal size.
For achieving the above object, the embedded induction input display device that the present invention proposes comprises many gate lines, wherein comprises first grid polar curve and second grid line; And a plurality of sensing units, each sensing unit includes the sensing element and the switching transistor of at least two parallel connections, and this two sensing element lays respectively at first grid polar curve and second grid line one side, and is connected to switching transistor jointly; And switching transistor is connected to first grid polar curve and read line, makes sensing element output transducing signal to read line with the control that is subjected to first grid polar curve.
Below will be by specific embodiment explanation in detail in conjunction with the accompanying drawings, when the effect that is easier to understand purpose of the present invention, technology contents, characteristics and is reached.
Description of drawings
Fig. 1 is known sensing unit circuit framework synoptic diagram.
Fig. 2 is the synoptic diagram that reads of known collocation timesharing driving framework.
Fig. 3 is a circuit framework synoptic diagram of the present invention.
Fig. 4 is the arrange in pairs or groups circuit diagram of timesharing driving framework of the present invention.
Embodiment
The framework that the present invention utilizes timesharing to drive, the sensing element of adjacent gate polar curve pixel is connected in parallel, and a shared switching transistor, the less sensing element of size so can be used, it is identical with script to keep the transducing signal size of reading, and then improves the aperture opening ratio of contact panel.
At first, see also shown in Figure 3, this embedded induction input display device includes many gate lines 22, GL1 as shown in FIG., GL2, GL3 etc., and a plurality of sensing units 20 are arranged, each sensing unit 20 includes a shared switching transistor 24 and the sensing element more than two or two, among the figure with three sensitization transistors (Photo TFT) as sensing element 26,28,30 is example, relation because of pixel layout, sensing element 26,28,30 is mutually in parallel and lay respectively at gate lines G L1, GL2, the side of GL3, and sensing element 26,28,30 grid and source electrode all are connected to common electrode (common electrode) 34, so that bias voltage to be provided, and drain electrode all is connected to switching transistor 24.The grid of switching transistor 24 then is connected to gate lines G L1, and source electrode is connected to those sensing elements 26,28,30, and drain electrode is connected to read line 32; This switching transistor 24 is subjected to the control of gate lines G L1, make those sensing element 26,28,30 exportable transducing signals to read line 32, and receive transducing signal, and detect the touch-control incident in view of the above and find out position of touch via the reading unit (not shown) that connects read line 32.
Wherein, above-mentioned switching transistor 24 and sensing element 26,28,30 use common thin film transistor (TFT) (TFT).In addition, the sensing element 26,28,30 of above-mentioned a plurality of parallel connections utilizes the electrically conducting transparent cabling, and for example tin indium oxide (ITO) is connected in parallel.
Moreover the quantity of the sensing element that the present invention is connected in parallel changes according to the resolution of vertical direction touch sensing is different.As shown in Figure 4, can utilize electrically conducting transparent cabling 38 that the sensing element 26,28 of two adjacent gate lines G L1 and GL2 is connected in parallel by the space between data line 36 and the read line 32, and a shared switching transistor 24.Because the photocurrent of single sensing element can be detected originally, the present invention is connected in parallel two sensing elements 26,28, and the area of sensing element just can effectively reduce, and makes after the aperture opening ratio raising, still can obtain the transducing signal of identical size.
Certainly, the above embodiments are example with two sensing elements, and in addition, the present invention can select the sensing element of varying number according to the difference of the touch sensing resolution of vertical direction.Moreover, sensing element of the present invention is except can using the optical sensor as sensitization transistor etc., this sensing element also can be capacitance sensing element or pressure sensor, cooperate above-mentioned architectural feature, also can utilize capacitance sensing element or pressure sensor to produce transducing signal, for detecting touch-control incident and position.
Above-described embodiment only is explanation technological thought of the present invention and characteristics, its purpose makes those skilled in the art can understand content of the present invention and is implementing according to this, when not limiting claim of the present invention with this, promptly the equalization of doing according to disclosed spirit generally changes or modification, must be encompassed in the claim of the present invention.
Claims (9)
1. embedded induction input display device:
Many gate lines comprise first grid polar curve and second grid line; And
A plurality of sensing units comprise:
The sensing element of at least two parallel connections, it lays respectively at described first grid polar curve and described second grid line one side; And
At least one switching transistor is connected to described first grid polar curve and read line, and connects described these sensing elements, makes described these sensing element output transducing signals to described read line with the control that is subjected to described first grid polar curve.
2. embedded induction input display device as claimed in claim 1, wherein, described sensing element is the sensitization transistor.
3. embedded induction input display device as claimed in claim 1 also comprises reading unit, connects described read line, receiving described transducing signal, and detects the touch-control incident in view of the above and finds out position of touch.
4. embedded induction input display device as claimed in claim 1, wherein, the quantity of described sensing element changes according to the resolution of vertical direction touch sensing is different.
5. embedded induction input display device as claimed in claim 2, wherein, the grid of described switching transistor is connected to first grid polar curve, and source electrode is connected to described these sensitization transistors, and drain electrode connects described read line.
6. embedded induction input display device as claimed in claim 2, wherein, transistorized grid of described sensitization and source electrode are connected to common electrode, and drain electrode connects described switching transistor.
7. embedded induction input display device as claimed in claim 1, wherein, described these sensing elements utilize the electrically conducting transparent cabling to be connected in parallel.
8. embedded induction input display device as claimed in claim 7, wherein, the material of described electrically conducting transparent cabling is a tin indium oxide.
9. embedded induction input display device as claimed in claim 1, wherein, described sensing element can be capacitance sensing element, pressure sensor or optical sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910164915 CN101989140B (en) | 2009-07-29 | 2009-07-29 | Embedded sensing input display device capable of improving aperture opening ratio |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910164915 CN101989140B (en) | 2009-07-29 | 2009-07-29 | Embedded sensing input display device capable of improving aperture opening ratio |
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| CN101989140A true CN101989140A (en) | 2011-03-23 |
| CN101989140B CN101989140B (en) | 2013-07-31 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529996A (en) * | 2012-07-05 | 2014-01-22 | 东莞万士达液晶显示器有限公司 | Touch panel device |
| CN105718118A (en) * | 2016-04-25 | 2016-06-29 | 京东方科技集团股份有限公司 | Array substrate, touch display panel, touch pressure detection method and display device |
| CN108735154A (en) * | 2018-05-31 | 2018-11-02 | 京东方科技集团股份有限公司 | Optical signal noise reduction module, optical signal noise-reduction method and display panel |
| WO2021078121A1 (en) * | 2019-10-23 | 2021-04-29 | 深圳市鸿合创新信息技术有限责任公司 | Capacitive touch screen control panel and large-size capacitive touch screen |
| US11371885B2 (en) | 2018-11-16 | 2022-06-28 | Au Optronics Corporation | Optical sensor circuit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101338011B1 (en) * | 2007-01-25 | 2013-12-06 | 삼성디스플레이 주식회사 | Displya device |
| CN101140366B (en) * | 2007-10-16 | 2010-09-15 | 友达光电股份有限公司 | Sensing-objects touching pixel unit, method and display apparatus thereof |
-
2009
- 2009-07-29 CN CN 200910164915 patent/CN101989140B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529996A (en) * | 2012-07-05 | 2014-01-22 | 东莞万士达液晶显示器有限公司 | Touch panel device |
| CN105718118A (en) * | 2016-04-25 | 2016-06-29 | 京东方科技集团股份有限公司 | Array substrate, touch display panel, touch pressure detection method and display device |
| CN105718118B (en) * | 2016-04-25 | 2019-01-22 | 京东方科技集团股份有限公司 | Array substrate, touch-control display panel and touch-control pressure detection method, display device |
| CN108735154A (en) * | 2018-05-31 | 2018-11-02 | 京东方科技集团股份有限公司 | Optical signal noise reduction module, optical signal noise-reduction method and display panel |
| US11074860B2 (en) | 2018-05-31 | 2021-07-27 | Boe Technology Group Co., Ltd. | Optical signal noise reduction circuit, optical signal noise reduction method and display panel |
| US11371885B2 (en) | 2018-11-16 | 2022-06-28 | Au Optronics Corporation | Optical sensor circuit |
| WO2021078121A1 (en) * | 2019-10-23 | 2021-04-29 | 深圳市鸿合创新信息技术有限责任公司 | Capacitive touch screen control panel and large-size capacitive touch screen |
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| CN101989140B (en) | 2013-07-31 |
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