CN106201069B - Embedded touch device and its detection method - Google Patents
Embedded touch device and its detection method Download PDFInfo
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- CN106201069B CN106201069B CN201610497505.2A CN201610497505A CN106201069B CN 106201069 B CN106201069 B CN 106201069B CN 201610497505 A CN201610497505 A CN 201610497505A CN 106201069 B CN106201069 B CN 106201069B
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- 238000001514 detection method Methods 0.000 title claims abstract description 59
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- 230000002159 abnormal effect Effects 0.000 claims description 3
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- 230000005856 abnormality Effects 0.000 claims description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 10
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- 101000689619 Homo sapiens Beta-adducin Proteins 0.000 description 7
- 238000013461 design Methods 0.000 description 7
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- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
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Classifications
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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
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Human Computer Interaction (AREA)
- Liquid Crystal (AREA)
Abstract
It include: display area and around the non-display area of the display area the present invention relates to a kind of embedded touch device and its detection method, the display area includes a plurality of touch control electrodes being arranged in array, each described touch control electrode connects a touch-control line；The non-display area includes a plurality of first cluster film transistor switches and a plurality of second cluster film transistor switches, the grid connection switch voltage of the first cluster film transistor switch, drain electrode connection touch-control line, source electrode connection the first detection voltage, the grid connection switch voltage of the second cluster film transistor switch, drain electrode connection touch-control line, source electrode connection the second detection voltage, the touch-control line of the touch control electrode connection of odd column odd-numbered line connects the first cluster film transistor switch, the touch-control line of the touch control electrode connection of odd column even number line connects the second cluster film transistor switch, the touch-control line of the touch control electrode connection of even column odd-numbered line connects the second cluster film transistor switch, the touch-control line of the touch control electrode connection of even column even number line connects the first cluster film transistor switch.
Description
Technical field
The present invention relates to field of display technology, in particular to a kind of embedded touch device and its detection method.
Background technique
Currently, small-medium size portable liquid crystal display generally uses fringe field to switch (Fringe Field S
Witching, FFS) liquid crystal display mode.In FFS technology, the pixel electrode on general upper layer is in fine strip shape, the COM electricity of lower layer
Pole is in planar.Because pixel electrode is covered on planar COM electrode, do not need to design storage electricity with special COM line
Hold, can effectively improve pixel aperture ratio.In addition, driving voltage depends mainly on the size of between pixel electrode and COM electrode
Thickness of insulating layer, the effect of distance by pixel electrode is relatively small.So the line space design between pixel electrode can be taken into account
Transmitance and driving voltage can be effectively reduced display screen power consumption.
In order to reduce the distance between pixel electrode and the data line at left and right sides of pixel open region, aperture opening ratio is improved,
COM electrode as shown in Figure 1 is developed in advanced liquid crystal display device to be located above data line, and lower section is planar pixel electrode
Structure.This structure does not need design specialized COM line to do storage capacitance, so the characteristics of maintaining high aperture.Meanwhile
Since COM electrode covers data line, interference of the data line electric field to open region mesomorphic state is shielded, makes pixel openings area can
Further to expand toward data line side, aperture opening ratio is further promoted.
Based on the basic structure of FFS liquid crystal display device, patent TWI464854B propose it is a kind of using COM electrode both as
Show electrode, and the embedded touch device architecture as touch control electrode, great cost advantage.The FFS of patent TWI464854B
The pixel basic structure of array substrate side is as shown in Fig. 2, in the gold being made of scan line, data line and thin film transistor switch
Belong to above layer, across insulating thick film layer, design has pixel electrode；There is touching in side on the pixel electrode across the design of PAS1 insulating layer
Control metal wire；In the top of touch-control metal wire, there is COM electrode across the design of PAS2 insulating layer.As based on FFS display framework
Embedded touch device, when controlling the rotation of FFS liquid crystal, the current potential of COM electrode is by dedicated wiring from display screen peripheral
It introduces；When being used as touch control gesture detection, the current potential of COM electrode is introduced by touch-control metal wire from display screen peripheral.
The detection of existing touch function is mainly by calculating resistance, the capacitor of each detection line of analysis, and and standard
Can value be compared to prejudge touch device and normally detect the position of touch-control.If short circuit or open circuit, inspection occur for detection line
Resistance value, the capacitance of survey line just will appear exception, can thus be detected and be judged as abnormal device.Using traditional detection
Method, it is detection of complex, at high cost.
Summary of the invention
The invention patent technical problem to be solved, which is to provide, a kind of designs simple and easy touch control electrode and detection
The embedded touch device and its detection method of line generation open/short circuit.
To achieve the goals above, one aspect of the present invention proposes a kind of embedded touch device, comprising: display area with
And the non-display area around the display area, the display area includes a plurality of touch control electrodes being arranged in array, each
A touch control electrode connects a touch-control line；The non-display area includes a plurality of first cluster film transistor switches and plural number
A second cluster film transistor switch, the grid connection switch voltage of the first cluster film transistor switch, drain electrode connection touching
Control line, source electrode connection the first detection voltage, the grid connection switch voltage of the second cluster film transistor switch, drain electrode connection
Touch-control line, source electrode connection the second detection voltage, the touch-control line of the touch control electrode connection of odd column odd-numbered line connect first group
Thin film transistor switch, the touch-control line of the touch control electrode connection of odd column even number line connect the second cluster film transistor and open
It closes, the touch-control line of the touch control electrode connection of even column odd-numbered line connects the second cluster film transistor switch, even column even number
The touch-control line of capable touch control electrode connection connects the first cluster film transistor switch.
Further, the display area further includes plural scan line and plural data line and the scan line
The a plurality of pixel regions intersected to form with the data line, a pixel region include a pixel electrode, a public electrode with should
Pixel electrode overlapping, the public electrode include at least two touch control electrodes.
Further, which corresponds at least two pixel region.
Further, the driving of display driving period touch-control is closed, and the display driving of touch-control driving period is closed.
Further, show that driving period, identical common voltage are supplied to touch control electrode, touch-control driving by touch-control line
Period, touch-control driving voltage are supplied to touch control electrode by touch-control line.
Further, the first detection voltage is the first public electrode voltages, and the second detection voltage is second public
Common-battery pole tension.
Another aspect of the present invention proposes a kind of detection method, fills for detecting preceding claim embedded touch such as
It sets, by observing the circuit abnormality situation observed abnormal picture in the case where detecting picture and judge touch control electrode and touch-control line.
Further, the signal waveform of the first detection voltage of setting and the second detection voltage and data line, forms light and shade and hands over
Picture is detected for the checkerboard of display.
Further, the signal waveform of the first detection voltage of setting and the second detection voltage and data line, forms all light
Detect picture.
Further, the signal waveform of the first detection voltage of setting and the second detection voltage and data line is formed complete dark
Detect picture.
The present invention was by the way that in the embedded touch device, transparent common electrode had both been used as the pixel of FFS liquid-crystal apparatus
Show electrode, and the touch control electrode as embedded touch-control device.The present invention passes through in traditional FFS liquid-crystal apparatus RGB Shorting
The test section Bar increases by tri- groups of signals of Vcom1/Vcom2/ADD2 and its associated detection circuit.In the detection of liquid-crystal apparatus
In equipment, it is provided with the module for detecting each block brightness automatically.It is combined by different pictures lighting result, determines each block Vcom
The breaking short-circuit state of touch control electrode and detection line.The inspection of open/short circuit occurs for touch control electrode and detection line provided by the invention
Survey method, it is simple and easy.
Detailed description of the invention
Fig. 1 is the schematic perspective view of dot structure in the prior art；
Fig. 2 is the schematic diagram of the section structure of dot structure in the prior art；
Fig. 3 is to schematically show embedded touch device plane framework schematic diagram of the present invention；
Fig. 4 is to schematically show embedded touch device circuit detection framework schematic diagram of the present invention；
Fig. 5 is the work wave schematic diagram for schematically showing Vcom1, Vcom2 and ADD2 of the present invention；
Fig. 6 A is to schematically show embedded touch device circuit first of the present invention to detect picture drawing；
Fig. 6 B is to schematically show embedded touch device circuit first of the present invention to detect the signal of picture signal inverted picture
Figure；
Fig. 7 is to schematically show embedded touch device circuit second of the present invention to detect picture drawing
Fig. 8 is to schematically show embedded touch device circuit third of the present invention to detect picture drawing.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate
It the present invention rather than limits the scope of the invention, after the present invention has been read, those skilled in the art are to of the invention each
The modification of kind equivalent form falls within the application range as defined in the appended claims.
The present invention is based on Fig. 1 and embedded touch device shown in Fig. 2, it is disconnected to propose that a kind of touch control electrode and detection line occur
Road/short circuit apparatus structure and its detection method.As shown in figure 3, in the embedded touch device based on FFS framework, plural number
The COM electrode of the distribution of root scan line horizontal cross, the vertical genesis analysis of complex root data line, bulk is covered with display in matrix shape
The current potential of region, COM electrode and touch-control line equipotential link, COM electrode is introduced by touch-control line from the outside of display device.
It is existing RGB point lamp drive circuit above viewing area in Fig. 3, circuit is made of plurality of films transistor.
The grid of all thin film transistor (TFT)s connects ADD1；All data lines being displayed in red respectively connect the leakage of a thin film transistor (TFT)
The source electrode of pole, all these thin film transistor (TFT)s connects R；The data line of all display greens respectively connects a thin film transistor (TFT)
The source electrode of drain electrode, all these thin film transistor (TFT)s connects G；All data lines being displayed in blue respectively connect a thin film transistor (TFT)
Drain electrode, the source electrodes of all these thin film transistor (TFT)s connects B.
Viewing area upper area shown in Fig. 3 is the test section RGB Shorting Bar of traditional liquid crystal device.In addition to inspection
Outside the detection circuit of measured data line, it is also devised with the structure of detection scan line.Wherein, all odd number horizontal scanning lines connect GO, institute
There is even number horizontal scanning line to connect GE.
It is COM electrode proposed by the present invention and the driving circuit of touch-control line below viewing area, circuit is by plural number in Fig. 3
A thin film transistor (TFT) is constituted.The grid of all thin film transistor (TFT)s connects ADD2；A part of touch-control line connects corresponding film crystal
The source electrode of the drain electrode of pipe, all these thin film transistor (TFT)s connects Vcom1；Another part touch-control line connects corresponding thin film transistor (TFT)
Drain electrode, the source electrodes of all these thin film transistor (TFT)s connects Vc om2.
The present invention is further added by ADD2/Vcom1/ on the basis of traditional liquid crystal mounted point modulating signal ADD1/R/G/B/GE/GO
Tri- groups of signals of Vcom2 and correlation detecting circuit.The connection of Vcom1/Vcom2 and each public electrode in viewing area are as shown in Figure 4: every
One column public electrode, from top to bottom, the public electrode of odd-numbered line and even number line is separately connected Vcom1 or Vcom2；Every a line is public
Electrode, from left to right, the public electrode of odd column and even column are separately connected Vcom2 or Vcom1.Specifically, first row is public
The 1/3/5/ of electrode, the 8/10/12 of secondary series public electrode, the 13/15/17 of third column public electrode, the 4th column public electrode
20/22/24, the 25/27/29/ of the 5th column public electrode, the 32/34/36 of the 6th column public electrode, connect Vcom1, it is remaining
Public electrode all connects Vcom2.
Based on Fig. 3 and detection framework shown in Fig. 4, coupling apparatus lighting-up equipment, setting detects each block brightness dress automatically
It sets.It is combined by different pictures lighting result, can determine that the open circuit of each block touch control electrode (public electrode) and detection line is short
Road situation.
Applied voltage is detected as shown in figure 5, Vcom1 and Vcom2 voltage is all DC voltage, voltage swing is on the left side 5V
It is right；ADD2 voltage is a pulse voltage, and pulse voltage size is in 25V or so.Detection method described in motion of the present invention needs
Picture is shown in conjunction with the corresponding pixel of each public electrode block, and pixel shows that the control of picture needs to set the signal wave of data line
Shape.
As shown in Figure 6A, by setting the signal waveform of data line, the light and shade for obtaining lattice-distribution alternately shows picture
Face.Wherein, each block and adjacent four blocks, are that light and shade alternately displays.After having confirmed picture as shown in Figure 6A, pass through
The signal waveform for setting data line enters next picture, and the light and shade of each picture inverts once, as shown in Figure 6B again.
The signal waveform for setting Vcom1 and Vcom2 voltage and data line, obtains the picture of a width all light.If there is such as
Picture shown in Fig. 7, the i.e. corresponding pixel region of 8 block of public electrode detect dark picture, can determine whether the detection of 8 blocks of connection
Open circuit occurs for line.
The signal waveform for setting Vcom1 and Vcom2 voltage and data line, obtains the picture of a width all light.If there is such as
Picture shown in Fig. 7, i.e. 8/14 block of public electrode detect grayscale block, can tentatively judge that short circuit occurs for 8/14 block.Again
ADD2 signal is adjusted, for example reduces its high level time, it is made to highlight undercharge, picture phenomenon is observed, can specifically pass through reality
Test adjusting.
Further, it is also possible to other lighting results by picture 1/2/3/4 combine, it is final to determine that open circuit or shorting region are blocky
Condition.For example, the signal waveform of setting Vcom1 and Vcom2 voltage and data line, obtain the complete dark picture of a width.If there is public affairs
8/14 block of common electrode detects grayscale block, can also tentatively judge that short circuit occurs for 8/14 block.ADD2 signal is adjusted again, such as
Its high level time is reduced, it is made to highlight undercharge, observes picture phenomenon, can specifically be adjusted by experiment.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (8)
1. a kind of embedded touch device, comprising: display area and the non-display area around the display area, the display
Region includes a plurality of touch control electrodes being arranged in array, each described touch control electrode connects a touch-control line；It is described non-display
Region includes a plurality of first cluster film transistor switches and a plurality of second cluster film transistor switches, first cluster film
The grid connection switch voltage of transistor switch, drain electrode connection touch-control line, source electrode connection the first detection voltage are described second group thin
The grid connection switch voltage of film transistor switch, drain electrode connection touch-control line, source electrode connection the second detection voltage, odd column odd number
The touch-control line of capable touch control electrode connection connects the first cluster film transistor switch, the touch-control electricity of odd column even number line
The touch-control line of pole connection connects the second cluster film transistor switch, the touch-control line of the touch control electrode connection of even column odd-numbered line
The second cluster film transistor switch is connected, the touch-control line of the touch control electrode connection of even column even number line connects the first cluster film
Transistor switch, the switching voltage are a pulse voltages, and the display area further includes plural scan line and plural item
Data line, the distribution of complex root scan line horizontal cross, the vertical genesis analysis of complex root data line, shown embedded touch device is also
It include: the detection circuit of detection data line and the structure for detecting scan line, wherein all odd number horizontal scanning lines connect the first grid
Pole tension input signal (GO), all even number horizontal scanning lines connect second grid voltage input signal (GE), on the viewing area
Side includes RGB point lamp drive circuit, and circuit is made of plurality of films transistor, the grid connection first of all thin film transistor (TFT)s
A plurality of pixel regions that switching voltage (ADD1), the scan line and the data line intersect to form, a pixel region include
One pixel electrode, a public electrode is Chong Die with the pixel electrode, which includes at least two touch control electrodes, display driving
The driving of period touch-control is closed, and the display driving of touch-control driving period is closed.
2. embedded touch device according to claim 1, which is characterized in that the touch control electrode corresponds at least two
Pixel region.
3. embedded touch device according to claim 1, which is characterized in that display driving period, identical common electrical
Pressure is supplied to touch control electrode, touch-control driving period by touch-control line, and touch-control driving voltage is supplied to touch control electrode by touch-control line.
4. embedded touch device according to claim 1, which is characterized in that the first detection voltage is first public
Electrode voltage, the second detection voltage is the second public electrode voltages.
5. a kind of detection method, for detecting the embedded touch device as described in one of claim 1-4, it is characterised in that:
The first detection voltage and the second detection voltage are all DC voltages；Switching voltage is a pulse voltage, passes through sight
It examines and observes the circuit abnormality situation that abnormal picture judges touch control electrode and touch-control line in the case where detecting picture.
6. detection method according to claim 5, which is characterized in that setting first detection voltage with second detection voltage and
The signal waveform of data line forms the checkerboard detection picture that light and shade alternately displays.
7. detection method according to claim 5, which is characterized in that setting first detection voltage with second detection voltage and
The signal waveform of data line forms the detection picture of all light.
8. detection method according to claim 5, which is characterized in that setting first detection voltage with second detection voltage and
The signal waveform of data line forms complete dark detection picture.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106648261B (en) * | 2017-03-06 | 2019-07-26 | 京东方科技集团股份有限公司 | A kind of array substrate and display panel, display device |
| CN106707575B (en) * | 2017-03-20 | 2020-03-10 | 厦门天马微电子有限公司 | Liquid crystal display panel and test method thereof |
| CN106909008B (en) * | 2017-03-31 | 2019-12-31 | 厦门天马微电子有限公司 | Array substrate, display panel and detection method of display panel |
| CN108874194B (en) * | 2017-05-10 | 2021-09-21 | 南京瀚宇彩欣科技有限责任公司 | Embedded touch display device and testing method and manufacturing method thereof |
| CN107123387A (en) * | 2017-06-20 | 2017-09-01 | 厦门天马微电子有限公司 | A kind of display device, display panel and its driving method |
| CN109388281A (en) * | 2017-08-07 | 2019-02-26 | 矽创电子股份有限公司 | Touch-control display driver circuit |
| CN107885402B (en) * | 2017-12-15 | 2020-11-24 | 合肥京东方光电科技有限公司 | Self-contained touch panel and display device |
| CN108594498B (en) * | 2018-04-25 | 2021-08-24 | Tcl华星光电技术有限公司 | Array substrate and detection method thereof, liquid crystal panel and alignment method thereof |
| KR20210056669A (en) * | 2019-11-11 | 2021-05-20 | 엘지디스플레이 주식회사 | Liquid crsytal display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1897094A (en) * | 2005-07-11 | 2007-01-17 | 中华映管股份有限公司 | Liquid-crystal display panel and its inspection |
| CN102455960A (en) * | 2010-10-28 | 2012-05-16 | 上海天马微电子有限公司 | Detection device and detection method |
| CN104536609A (en) * | 2014-12-30 | 2015-04-22 | 深圳市华星光电技术有限公司 | Display panel with touch function and fault detection method |
| CN105093593A (en) * | 2015-09-11 | 2015-11-25 | 京东方科技集团股份有限公司 | Display substrate and testing method and display device thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013094527A1 (en) * | 2011-12-19 | 2013-06-27 | シャープ株式会社 | Touch sensor-embedded display panel, display device provided therewith, and method for driving touch sensor-embedded display panel |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1897094A (en) * | 2005-07-11 | 2007-01-17 | 中华映管股份有限公司 | Liquid-crystal display panel and its inspection |
| CN102455960A (en) * | 2010-10-28 | 2012-05-16 | 上海天马微电子有限公司 | Detection device and detection method |
| CN104536609A (en) * | 2014-12-30 | 2015-04-22 | 深圳市华星光电技术有限公司 | Display panel with touch function and fault detection method |
| CN105093593A (en) * | 2015-09-11 | 2015-11-25 | 京东方科技集团股份有限公司 | Display substrate and testing method and display device thereof |
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