CN102662515A - Liquid crystal touch screen detection method - Google Patents
Liquid crystal touch screen detection method Download PDFInfo
- Publication number
- CN102662515A CN102662515A CN2012100910277A CN201210091027A CN102662515A CN 102662515 A CN102662515 A CN 102662515A CN 2012100910277 A CN2012100910277 A CN 2012100910277A CN 201210091027 A CN201210091027 A CN 201210091027A CN 102662515 A CN102662515 A CN 102662515A
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- touch screen
- crystal touch
- detecting
- layer
- 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
Links
Images
Abstract
The invention discloses a liquid crystal touch screen detection method. A liquid crystal touch screen comprises an upper substrate, a lower substrate and a liquid crystal layer between the upper substrate and the lower substrate. Each of the upper substrate and the lower substrate comprises a driving layer and is connected to a control chip, at least one of the upper substrate and the lower substrate comprises a sensing layer, and the control chip alternately provides display driving signals and touch sensing signals. By means of alternate providing of two signals, noise interference generated by displaying of the liquid crystal screen can be avoided when the touch sensing layer is scanned to acquire data, and touch positions of the liquid crystal touch screen can be accurately judged.
Description
Technical field
The present invention relates to a kind of method for detecting of touch-screen, especially a kind of method for detecting of liquid crystal touch screen.
Background technology
Along with science and technology development, LCD has replaced cathode-ray tube display gradually owing to have plurality of advantages such as the high and low electromagnetic radiation of image quality, low-power consumption, and wide model is applied to electronic products such as notebook computer, desktop computer, mobile phone.In order to satisfy swift to operate and recreational requirement, touch-screen also begins to be applied in the liquid crystal display simultaneously, and numerous electronic products such as notebook computer, mobile phone, camera all have the liquid crystal display of touch function in use.
Existing liquid crystal touch screen generally includes upper substrate, infrabasal plate and the liquid crystal layer between upper and lower substrate, and said upper substrate comprises Drive Layer and inductive layer at least, and infrabasal plate comprises display layer, realizes Presentation Function and touch function simultaneously.Need add the problem that touch-screen is realized touch function though this liquid crystal touch screen has solved liquid crystal display, when realizing touch function, because the realization meeting touch sensitive layer of Presentation Function produces noise, influence is to the accurate judgement of touch location.
Summary of the invention
Technical matters to be solved by this invention provides a kind of removal liquid crystal display noise, accurately locatees the method for detecting of the liquid crystal touch screen of touch location.
To achieve these goals; The present invention provides a kind of method for detecting of liquid crystal touch screen; Said liquid crystal touch screen comprises upper substrate, infrabasal plate and the liquid crystal layer between the two, and said upper and lower substrate includes Drive Layer, and said upper and lower substrate all is connected to control chip; At least upper substrate or infrabasal plate comprise inductive layer, and said control chip alternately provides display drive signals and touch sensible signal.
Compared with prior art; Liquid crystal touch screen method for detecting of the present invention, the mode that alternately provides through two kinds of signals is when data are obtained in scanning to touch sensitive layer; Can not receive liquid crystal display and show the noise that is produced, can accurately judge the touch location of liquid crystal touch screen.
Description of drawings
Fig. 1 is the synoptic diagram of liquid crystal touch screen of the present invention.
Fig. 2 is a wire structures synoptic diagram of going up inductive layer.
Fig. 3 is the wire structures synoptic diagram of following inductive layer.
Fig. 4 is the block diagram of liquid crystal touch screen method for detecting of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
As shown in Figure 1, said liquid crystal touch screen comprises upper substrate 1, infrabasal plate 2 and the liquid crystal layer between the two 3, and said upper substrate 1 all is connected to control chip (not shown) with said infrabasal plate 2.Said upper substrate 1 comprises substrate 10, goes up Drive Layer 11 and last inductive layer 12, and the said Drive Layer 11 that goes up is in the homonymy of last substrate 10 with said upward inductive layer 12; Infrabasal plate 2 comprises substrate 20 down, following Drive Layer 21 and following inductive layer 22; Said Drive Layer 21 down is positioned at the said homonymy of substrate 20 down with said inductive layer 21 down; Wherein said upper and lower Drive Layer 11,21 all comprises several drive electrodes (not shown); Said upper and lower inductive layer 12,22 all comprises several induction electrodes 120, and the induction electrode 120 of said upper and lower inductive layer 12,22 is connected to the drive electrode of corresponding upper and lower Drive Layer 11,21 respectively.The shape of said induction electrode 120 can be identical with drive electrode, also can be different with drive electrode.Illustrate; As shown in Figures 2 and 3; Said drive electrode and the said induction electrode 120 of going up inductive layer 12 of going up Drive Layer 11 is the strip electrode that laterally is arranged in parallel, and the drive electrode of said Drive Layer 21 down and the said induction electrode 120 of inductive layer 22 down are the strip electrode that parallel longitudinal is arranged; Also can saidly go up the strip electrode of drive electrode for laterally being arranged in parallel of Drive Layer 11; The said induction electrode of going up inductive layer 12 is to be arranged in parallel and to walk crosswise the rhombus electrode of connection; The said drive electrode of Drive Layer 21 down is the strip electrode that parallel longitudinal is arranged, and the said induction electrode of inductive layer 22 down is the rhombus electrode that is arranged in parallel and vertically connects, certainly; The shape of said induction electrode is not limited to rhombus, also can be other shapes such as hexagon, octagon.Can utilize drive electrode to judge the accurate position that said touch object touches simply accurately like this.
Said control chip is that said upper and lower substrate 1,2 provides display drive signals and touch sensible signal, and hockets, and said display drive signals is a high-voltage signal, and said touch sensible signal is a low-voltage signal.In the period 1 is that said upper and lower substrate 1,2 provides display drive signals simultaneously; Be followed successively by upper and lower substrate 2 in adjacent following one-period the touch sensible signal is provided; The time in said cycle is moderate, is advisable with the Presentation Function and the touch function that do not influence liquid crystal touch screen.When providing display drive signals, realizes said control chip Presentation Function; When providing the touch sensible signal, realizes said control chip touch function; Like this when realizing touch function; Can not receive the noise that produces because of Presentation Function, thereby obtain better induced signal, more accurate to the judgement of touch location.
See also Fig. 4, said control chip is that said upper and lower substrate 1,2 provides display drive signals and touch sensible signal, and hockets; When touching object; The influence value of induction electrode changes, and said control chip is a said upper and lower substrate 1,2 when the touch sensible signal is provided, and obtains corresponding data and confirms touch location; Said touch-control chip is made corresponding reaction according to touch location, and when for upper and lower substrate 1,2 display drive signals being provided, shows.
The present invention is not limited to the foregoing description; Also can realize above-mentioned purpose through other modes; As: said inductive layer can only be layed in said upper substrate 1 or said infrabasal plate 2, can adopt the wire structures of individual layer, also can adopt double-deck wire structures; The induction electrode of said inductive layer can link to each other with the drive electrode of corresponding Drive Layer, and said inductive layer also can be connected directly to said control chip.When adopting this structure; In the period 1 is that said upper and lower substrate 1,2 provides display drive signals simultaneously; Be merely upper substrate 1 or infrabasal plate 2 in adjacent following one-period the touch sensible signal is provided with inductive layer; When realizing touch function, can not receive the noise that produces because of Presentation Function, to obtain better induced signal.
The method for detecting of liquid crystal touch screen of the present invention; Said control chip is that upper and lower substrate 1,2 is realized Presentation Function when display drive signals is provided; Said control chip is realized touch function when being merely upper and lower substrate 1,2 the touch sensible signal being provided; Two kinds of signals hocket, and when realizing touch function, the high frequency and the high-voltage noise that produce owing to display drive signals in the time of can not receiving because of the realization demonstration are disturbed like this; Thereby obtain induced signal better, make more accurate the judgement of touch location.
Claims (10)
1. the method for detecting of a liquid crystal touch screen; Said liquid crystal touch screen comprises upper substrate, infrabasal plate and the liquid crystal layer between the two; Said upper and lower substrate includes Drive Layer; Said upper and lower substrate all is connected to control chip, it is characterized in that: upper substrate or infrabasal plate comprise inductive layer at least, and said control chip alternately provides display drive signals and touch sensible signal.
2. the method for detecting of liquid crystal touch screen as claimed in claim 1, it is characterized in that: the display drive signals that said control chip provides is a high-voltage signal.
3. the method for detecting of liquid crystal touch screen as claimed in claim 1, it is characterized in that: the touch sensible signal that said control chip provides is a low-voltage signal.
4. the method for detecting of liquid crystal touch screen as claimed in claim 1, it is characterized in that: said upper and lower substrate includes inductive layer.
5. like the method for detecting of claim 1 or 4 described liquid crystal touch screens, it is characterized in that: said Drive Layer comprises several drive electrodes, and said inductive layer comprises several induction electrodes, and said induction electrode is connected to corresponding drive electrode.
6. the method for detecting of liquid crystal touch screen as claimed in claim 5, it is characterized in that: said induction electrode is identical with said drive electrode shape, the corresponding setting.
7. the method for detecting of liquid crystal touch screen as claimed in claim 6 is characterized in that: said induction electrode be shaped as bar shaped.
8. the method for detecting of liquid crystal touch screen as claimed in claim 5, it is characterized in that: said induction electrode is different with said drive electrode shape, said induction electrode be shaped as rhombus, hexagon or octagon, laterally or vertically connect.
9. the method for detecting of liquid crystal touch screen as claimed in claim 1 is characterized in that: said inductive layer employing individual layer wire structures.
10. the method for detecting of liquid crystal touch screen as claimed in claim 1 is characterized in that: said inductive layer employing two-layer wiring structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100910277A CN102662515A (en) | 2012-03-31 | 2012-03-31 | Liquid crystal touch screen detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100910277A CN102662515A (en) | 2012-03-31 | 2012-03-31 | Liquid crystal touch screen detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102662515A true CN102662515A (en) | 2012-09-12 |
Family
ID=46772019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100910277A Pending CN102662515A (en) | 2012-03-31 | 2012-03-31 | Liquid crystal touch screen detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102662515A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080309633A1 (en) * | 2007-06-13 | 2008-12-18 | Apple Inc. | Touch-sensitive display |
| US20100007624A1 (en) * | 2008-07-09 | 2010-01-14 | Tsinghua University | Liquid Crystal Display Screen |
| US20100033448A1 (en) * | 2008-08-07 | 2010-02-11 | Sony Corporation | Liquid crystal display device and a method of manufacturing the same |
| CN102109690A (en) * | 2009-12-25 | 2011-06-29 | 上海天马微电子有限公司 | Embedded touch-screen LCD (liquid crystal display) device and control method |
-
2012
- 2012-03-31 CN CN2012100910277A patent/CN102662515A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080309633A1 (en) * | 2007-06-13 | 2008-12-18 | Apple Inc. | Touch-sensitive display |
| US20100007624A1 (en) * | 2008-07-09 | 2010-01-14 | Tsinghua University | Liquid Crystal Display Screen |
| US20100033448A1 (en) * | 2008-08-07 | 2010-02-11 | Sony Corporation | Liquid crystal display device and a method of manufacturing the same |
| CN102109690A (en) * | 2009-12-25 | 2011-06-29 | 上海天马微电子有限公司 | Embedded touch-screen LCD (liquid crystal display) device and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205068355U (en) | Touch substrate and display device | |
| CN104995589B (en) | For reducing the modulation power source of parasitic capacitance | |
| US10031626B2 (en) | Display device with integrated touch screen | |
| WO2016058309A1 (en) | In-cell touchscreen and display apparatus | |
| CN104022127A (en) | Array substrate, manufacturing method thereof and displaying device | |
| CN103513845B (en) | There is the display device of input system and drive the method for this display device | |
| EP3151096A1 (en) | Capacitive touch structure, embedded touchscreen, display device and scanning method therefor | |
| CN103279237A (en) | Built-in touch screen and touch display device | |
| US10078393B2 (en) | Touch detection device, display device with touch detection function, and cover member | |
| CN103309534B (en) | Array substrate, touch screen, drive method and display device | |
| US20160252995A1 (en) | In-cell touch panel and display device | |
| CN102768604A (en) | Capacitive embedded touch screen, as well as touch location method and display device thereof | |
| US9703441B2 (en) | Touch screen device, touch screen display device using the same, and driving method thereof | |
| CN205827356U (en) | A kind of touch-control display panel and touch control display apparatus | |
| US20170031514A1 (en) | Display device and electronic equipment | |
| CN104536629A (en) | Embedded type touch screen and display device | |
| CN104252275A (en) | Touch sensing apparatus and method of driving the same | |
| CN104020910A (en) | In cell touch panel and display device | |
| EP3153956A1 (en) | Capacitive touch structure, embedded touchscreen, display device and scanning method therefor | |
| CN104216584A (en) | Touch display panel and display device | |
| CN104571756A (en) | Touch display panel and driving method and touch device thereof | |
| CN104731402A (en) | Display device with integrated touch screen and driving method thereof | |
| CN102968231A (en) | Capacitive embedded touch screen, driving method thereof and display device | |
| CN107025011B (en) | Display panel with built-in touch screen and the touch display unit including it | |
| CN103105965B (en) | For driving equipment and the method for touch sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120912 |