CN102645999B - Touch control display apparatus - Google Patents
Touch control display apparatus Download PDFInfo
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- CN102645999B CN102645999B CN201210053133.6A CN201210053133A CN102645999B CN 102645999 B CN102645999 B CN 102645999B CN 201210053133 A CN201210053133 A CN 201210053133A CN 102645999 B CN102645999 B CN 102645999B
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- contact panel
- drive singal
- display panel
- touch
- panel
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Abstract
The present invention relates to a kind of touch control display apparatus, comprise display panel, contact panel, gate pole driver and touch sensing.The corresponding display panel of contact panel and configuring.Gate pole driver couples display panel and contact panel, and sequentially export multiple drive singal to contact panel in order to sequentially to export multiple sweep signal to display panel, wherein the output time of these sweep signals and the output time of these drive singal do not overlap.Touch sensing couples contact panel, and calculates position of touch according to the sensing signal that contact panel exports.The present invention utilizes gate pole driver to produce the drive singal of contact panel, to improve the signal to noise ratio of the sensing signal of contact panel, and can reduce hardware cost; Further, the output time of sweep signal and drive singal is separated, to reduce the interference of electric field to contact panel of display panel.
Description
Technical field
The present invention relates to a kind of touch control display apparatus, particularly a kind of touch control display apparatus integrating driving circuit.
Background technology
Along with being showing improvement or progress day by day of display science and technology, people can make life more convenient by the auxiliary of display, are the characteristic asking display light, thin, impel flat-panel screens (flat panel display, FPD) to become current main flow.In recent years, all continuous direction towards easy and simple to handle, small size and screen sizes of various electronic product strides forward, and particularly portable electronic product is more strict for the requirement of volume and screen size.Therefore, the design of touch and display panel are all integrated by many electronic products, to omit the space needed for keyboard or operational and controlled key button, and then make the configurable enlarged areas of screen.
Generally speaking, touch-control display panel comprises display panel and contact panel, wherein contact panel can in be built in display panel or to be affixed on display panel outward.Contact panel divides into electric resistance touch-control panel, capacitance type touch-control panel, optical touch control panel, sound wave type contact panel and electromagnetic touch-control panel haply according to the difference of its sensing mode.Further, due to modular cause, the driving circuit of display panel and the driving circuit of contact panel generally can separate and design, so that the driving circuit of the driving circuit of display panel and contact panel can respective independent work.
Owing to being built in display panel in contact panel or being affixed on display panel outward, the sensing signal that therefore contact panel exports is easy to affected by the electric field of display panel, so that affect the touch quality (as sensitivity and accuracy) of contact panel.At present, the mode promoting the touch quality of contact panel has two kinds: the first for increase by a shielding electrode layer again on contact panel, and to suppress display panel to the interference of contact panel, and then the electric field of reduction display panel is to the interference volume of contact panel; The second is the voltage quasi position of the drive singal improving contact panel, to increase the signal to noise ratio (Signal to Noise Ratio, SNR) of the sensing signal of contact panel.Though aforesaid way can improve the interference of display panel to contact panel, the cost of touch control display apparatus will certainly be increased.
Summary of the invention
In view of the deficiencies in the prior art, the object of the present invention is to provide a kind of touch control display apparatus, it utilizes gate pole driver to produce the drive singal of contact panel, to improve the signal to noise ratio of the sensing signal of contact panel, and can reduce hardware cost; Further, the output time of sweep signal and drive singal is separated, to reduce the interference of electric field to contact panel of display panel.
To achieve these goals, technical scheme of the present invention is: a kind of touch control display apparatus, comprises display panel, contact panel, gate pole driver and touch sensing.The corresponding display panel of contact panel and configuring; Gate pole driver couples contact panel and display panel, and sequentially export multiple drive singal to contact panel in order to sequentially to export multiple sweep signal to display panel, wherein the output time of these sweep signals and the output time of these drive singal do not overlap; Touch sensing couples contact panel, and calculates a position of touch according to the sensing signal that contact panel exports.
In one embodiment of this invention, gate pole driver sequentially exports these sweep signals during picture display, and gate pole driver sequentially exports these sweep signals during vertical blank.
In one embodiment of this invention, the scanning times of contact panel during vertical blank is decided by the pulse bandwidth of these drive singal.
In one embodiment of this invention, the scanning times of contact panel during vertical blank is 1.
In one embodiment of this invention, gate pole driver has multiple gate drive chip, wherein these drive singal of these gate drive chips difference output.
In one embodiment of this invention, gate pole driver has multiple gate drive chip, and wherein these drive singal are exported by these gate drive chips of part.
In one embodiment of this invention, these drive singal export through the pin position multiple for subsequent use of these gate drive chips.
In one embodiment of this invention, touch sensing judges the output time of each drive singal according to sequential, with in time receiving sensing signal, output time according to each drive singal judges the first axial coordinate that position of touch is corresponding, and judges according to the output pin position of sensing signal the second axial coordinate that position of touch is corresponding.
In one embodiment of this invention, touch control display apparatus more comprises time schedule controller, exports these sweep signals and these drive singal in order to control grid driver.
In one embodiment of this invention, touch sensing is for being integrated in time schedule controller.
In one embodiment of this invention, contact panel is built in display panel in being or is attached on display panel.
The present invention has the following advantages: first, the drive singal that this touch control display apparatus exports through gate pole driver, to promote the signal to noise ratio of sensing signal, and can save hardware cost; Secondly, because the output time of sweep signal and the output time of drive singal do not overlap, the interference of display panel to contact panel can therefore be reduced.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate institute's accompanying drawings to be described in detail below.
Accompanying drawing explanation
Fig. 1 is the system schematic of the touch control display apparatus according to one embodiment of the invention.
Fig. 2 is that Fig. 1 is according to the sweep signal of one embodiment of the invention and the time diagram of drive singal.
Fig. 3 is Fig. 1 according to the schematic wiring diagram of the gate pole driver of one embodiment of the invention, display panel and contact panel.
Fig. 4 is Fig. 1 according to the schematic wiring diagram of the gate pole driver of another embodiment of the present invention, display panel and contact panel.
Fig. 5 is the system schematic of the touch control display apparatus according to another embodiment of the present invention.
[primary clustering symbol description]
100: touch control display apparatus
110,510: time schedule controller
120: gate pole driver
130: source electrode driver
140: display panel
150: contact panel
160,511: touch sensing
310,320,410,420: gate drive chip
430: perforation
DR: drive singal
FDP: during picture display
SC: sweep signal
SE: sensing signal
TP: position of touch
VB: during vertical blank
VP: pixel voltages.
Embodiment
Fig. 1 is the system schematic of the touch control display apparatus according to one embodiment of the invention.Please refer to Fig. 1, in the present embodiment, touch control display apparatus 100 comprises time schedule controller 110, gate pole driver 120, source electrode driver 130, display panel 140, contact panel 150 and touch sensing 160.Generally speaking, contact panel 150 is understood corresponding display panel 140 and configures, that is contact panel 150 can in be built in display panel 140 or be attached on display panel 140, this can usually know according to this area the assembly that the knowledgeable adopts and determine, and the embodiment of the present invention is not as limit.
Time schedule controller 110 couples gate pole driver 120 and source electrode driver 130.Gate pole driver 120 couples display panel 140 and contact panel 150, and is controlled by time schedule controller 110 and sequentially exports multiple sweep signal SC to display panel 140, and sequentially exports multiple drive singal DR to contact panel 150.Wherein, the output time of these sweep signal SC and the output time of these drive singal DR do not overlap.Source electrode driver 130 couples display panel 140, and is controlled by time schedule controller 110 and sequentially exports multiple pixel voltages VP to display panel 140, with by the image write display panel 140 of display.Touch sensing 160 couples contact panel 150, and calculates position of touch TP according to the sensing signal SE that contact panel 150 exports.
According to above-mentioned, because the voltage quasi position (being about 20 ~ 30 volts) of sweep signal SC can much larger than the driving voltage (being about 3.3 ~ 5 volts) of conventional touch panel, therefore the drive singal DR that gate pole driver 120 exports also can much larger than the driving voltage of conventional touch panel, therefore can promote the signal to noise ratio of sensing signal SE, and the circuit of generation drive singal DR can be saved and reduce hardware cost.Further, because the output time of these sweep signal SC and the output time of these drive singal DR do not overlap, that is write image did not overlap to the time of display panel 140 and the time of scanning contact panel 150.Because the electric field of display panel 140 in time writing image can be comparatively strong, the scanning that the time therefore write outside image at display panel 140 carries out contact panel 150 can reduce the electric field of display panel 140 to the interference of contact panel 150.
Furthermore, time schedule controller 110 can transmit in order to control grid driver 120 signal (such as vertical start signal) or transmit corresponding clock signal to touch sensing 160, can pass through to make touch sensing 160 the signal output timing that count frequency understands gate pole driver 120, and touch sensing 160 can judge the output time of each drive singal DR according to the signal output timing of gate pole driver 120.At this contact panel 150 for capacitive character contact panel, because each drive singal DR can sequentially export, therefore the output time of each drive singal DR determines an axial coordinate (as Y-axis) of position of touch TP, and another axial coordinate (as X-axis) of position of touch TP is then decided by the output pin position of sensing signal SE.Therefore, when touch sensing 160 receives sensing signal SE, can judge according to the output time of each drive singal DR the first axial coordinate (such as Y-axis coordinate) that position of touch TP is corresponding, and judge according to the output pin position of sensing signal SE the second axial coordinate (such as Y-axis coordinate) that position of touch TP is corresponding.By this, the control signal of carrying out needed for touch-control scanning can more be simplified.
In an embodiment of the present invention, contact panel 150 is not limited to capacitive character contact panel, and can be the multiple drive singal DR of the received in sequence also contact panel of the pin position output sensing signal SE in correspondence according to the position of touching, such as digital resistance contact panel.
Fig. 2 is that Fig. 1 is according to the sweep signal of one embodiment of the invention and the time diagram of drive singal.Please refer to Fig. 1 and Fig. 2, in the present embodiment, gate pole driver 120 is controlled by time schedule controller 110 and sequentially exports multiple sweep signal SC to display panel 140 in picture display period FDP, and in vertical blank period VB, sequentially export multiple drive singal DR to contact panel 150, that is the falling edge of last sweep signal SC can trigger gate pole driver 120 and starts sequentially to export multiple drive singal DR.Wherein, during the combination of picture display period FDP and vertical blank period VB can be considered a picture.
Generally speaking, contact panel 150 is decided by the quantity of drive singal DR needed for the time span of vertical blank period VB, contact panel 150 and the pulse bandwidth of drive singal DR in the scanning times of vertical blank period VB.When the time of vertical blank period VB is fixed and the quantity of drive singal DR needed for contact panel 150 is fixing, contact panel 150 is decided by the pulse bandwidth of these drive singal DR in the scanning times of vertical blank period VB.That is, the pulse bandwidth of drive singal DR is wider, and contact panel 150 is fewer in the scanning times of vertical blank period VB, and the pulse bandwidth of drive singal DR is narrower, contact panel 150 is more in the scanning times of vertical blank period VB, and this can know the knowledgeable's sets itself usually according to this area.In addition when contact panel 150 is more in the scanning times of vertical blank period VB, then the sensitivity of touch-control is higher, and this can usually know the knowledgeable according to this area and determine.Wherein, the pulse bandwidth of drive singal DR can be controlled by time schedule controller 110, but other embodiment of the present invention is not as limit.
In addition, when contact panel 150 is greater than 1 in the scanning times of vertical blank period VB, then gate pole driver 120 can repeat to send these drive singal DR, that is gate pole driver 120 can configure extra control circuit and repeats to send these drive singal DR to trigger gate pole driver 120.When contact panel is when the scanning times of vertical blank period VB is 1, that is each drive singal DR only exports once in vertical blank period VB, then gate pole driver 120 must not repeat to send these drive singal DR, that is must not configure extra control circuit and repeat to send these drive singal DR to trigger gate pole driver 120, the circuit of gate pole driver 120 can be simplified by this.
Fig. 3 is Fig. 1 according to the schematic wiring diagram of the gate pole driver of one embodiment of the invention, display panel and contact panel.Please refer to Fig. 1 and Fig. 3, in the present embodiment, be attached at display panel 140 for contact panel 150.Further, gate pole driver 120 has multiple gate drive chip (as 310,320), and these gate drive chips (as 310,320) are in order to produce sweep signal SC, and wherein drive singal DR is exported by the gate drive chip (as 310) of part.Be determine according to the demand of actual set in order to export the quantity of the gate drive chip of these drive singal DR, be illustrated as in order to explanation.Further, gate drive chip (as 310) can utilize its pin position for subsequent use to carry out output drive signal DR, therefore can not affect the function that it exports sweep signal SC.
In the present embodiment, drive singal DR can pass through extra wiring and is sent to contact panel 150.Because contact panel 150 is attached on display panel 140, therefore above-mentioned wiring additionally can be formed at display panel 140 colored optical filtering substrates on relative to the surface of liquid crystal layer.
Fig. 4 is Fig. 1 according to the schematic wiring diagram of the gate pole driver of another embodiment of the present invention, display panel and contact panel.Please refer to Fig. 1 and Fig. 4, in the present embodiment, be attached at display panel 140 for contact panel 150.Gate pole driver 120 has multiple gate drive chip (as 410,420), the wherein drive singal DR of these gate drive chips (as 410,420) difference output, that is gate drive chip (as 410,420) is except exporting sweep signal SC, also can export at least one drive singal DR, and each gate drive chip (as 410,420) the quantity of drive singal DR that exports can along with retouch the quantity of the drive singal DR needed for the contact panel 150 swept and become.
When gate drive chip (as 410,420) shares output drive signal DR, drive singal DR can with the same inside being first sent to display panel 140 through wiring of sweep signal SC, now can form perforation 430 on display panel 140, be sent to contact panel 150 to make drive singal DR through the perforation 430 of correspondence.By this, the path being sent to contact panel 150 due to drive singal DR can be similar, that is the energy dissipation that each drive singal DR is sent to contact panel 150 by gate drive chip (as 410,420) is roughly the same, therefore the voltage quasi position of the sensing signal SE of contact panel 150 output can be roughly the same, also can improve the uniformity coefficient of touch-control sensing, and then improve touch-control quality.
Fig. 5 is the system schematic of the touch control display apparatus according to another embodiment of the present invention.Please refer to Fig. 1 and Fig. 5, touch sensing 500 is approximately identical to touch sensing 100, and its difference is time schedule controller 510.In the present embodiment, be integrated in by touch sensing 511 in time schedule controller 510, wherein touch sensing 511 can refer to touch sensing 160, then repeats no more at this.By this, can not additional configuration touch sensing and reduce hardware cost.
In sum, the touch control display apparatus of the embodiment of the present invention, its drive singal exported through gate pole driver, to promote the signal to noise ratio of sensing signal, and can save the circuit of generation drive singal and reduce hardware cost.Secondly, because the output time of sweep signal and the output time of drive singal do not overlap, the interference of display panel to contact panel can therefore be reduced.Further, touch sensing can judge the output time of each drive singal according to the signal output timing of gate pole driver, therefore can more simplify the control signal of carrying out needed for touch-control scanning.Moreover gate drive chip can share output drive signal, can be similar to make each drive singal be sent to the path of contact panel, use the uniformity coefficient improving touch-control sensing, and then improve touch-control quality.Furthermore, can touch sensing be integrated in time schedule controller, therefore can not additional configuration touch sensing and reduce hardware cost.
Although the present invention discloses as above with embodiment; so itself and be not used to limit the present invention, have in any art and usually know the knowledgeable, without departing from the spirit and scope of the present invention; when doing a little change and retouching, therefore protection scope of the present invention is as the criterion with claims.
Claims (1)
1. a touch control display apparatus, is characterized in that, comprising:
One display panel;
One contact panel, to should display panel and configuring, this contact panel be built in this display panel or be attached on this display panel in being;
One gate pole driver, couple this contact panel and this display panel, sequentially export multiple sweep signal during being used to a picture display to this display panel sequentially exports multiple drive singal to this contact panel during a vertical blank, wherein the output time of those sweep signals and the output time of those drive singal do not overlap, the scanning times of this contact panel during this vertical blank is decided by the pulse bandwidth of those drive singal, and the scanning times of this contact panel during this vertical blank is 1; This gate pole driver has multiple gate drive chip, wherein those gate drive chips jointly export those drive singal or those drive singal and are exported by those gate drive chips of part, and those drive singal export through the pin position multiple for subsequent use of those gate drive chips;
One touch sensing, couple this contact panel, and the sensing signal exported according to this contact panel calculates a position of touch, this touch sensing judges the output time of those drive singal each according to sequential, with in time receiving this sensing signal, output time according to those drive singal each judges one first axial coordinate that this position of touch is corresponding, and judges according to the output pin position of this sensing signal one second axial coordinate that this position of touch is corresponding;
Time schedule controller, export those sweep signals and those drive singal in order to control this gate pole driver, this touch sensing is for being integrated in this time schedule controller; And
One source pole driver, couples this display panel, and is controlled by time schedule controller and sequentially exports multiple pixel voltages to display panel, with by the image write display panel of display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210053133.6A CN102645999B (en) | 2012-03-02 | 2012-03-02 | Touch control display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210053133.6A CN102645999B (en) | 2012-03-02 | 2012-03-02 | Touch control display apparatus |
Publications (2)
| Publication Number | Publication Date |
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| CN102645999A CN102645999A (en) | 2012-08-22 |
| CN102645999B true CN102645999B (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210053133.6A Expired - Fee Related CN102645999B (en) | 2012-03-02 | 2012-03-02 | Touch control display apparatus |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103677354B (en) * | 2012-09-03 | 2016-08-10 | 炬芯（珠海）科技有限公司 | A kind of control equipment and signal sampling method |
| JP6067302B2 (en) * | 2012-09-28 | 2017-01-25 | シナプティクス・ジャパン合同会社 | Semiconductor device |
| CN104575371B (en) * | 2013-10-24 | 2017-04-19 | 昆山工研院新型平板显示技术中心有限公司 | Touch-type 3D display panel and control method thereof |
| CN105161067B (en) * | 2015-10-14 | 2018-06-29 | 深圳市华星光电技术有限公司 | Array gate drive circuit, display panel and display device |
| DE102015118649A1 (en) * | 2015-10-30 | 2017-05-04 | Vorwerk & Co. Interholding Gmbh | Device for connecting an electrical coupling element |
| KR102400628B1 (en) * | 2017-08-17 | 2022-05-23 | 삼성전자주식회사 | Electronic device and display for reducing leakage current |
| TWI686735B (en) * | 2018-11-20 | 2020-03-01 | 友達光電股份有限公司 | Integrated touch display device and driving method thereof |
| CN112596638B (en) * | 2020-12-30 | 2023-03-21 | 深圳市华星光电半导体显示技术有限公司 | Display panel, driving method thereof and display device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100595640C (en) * | 2004-09-24 | 2010-03-24 | 三星电子株式会社 | Touch detectable display device and driving method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005055616A (en) * | 2003-08-01 | 2005-03-03 | Casio Comput Co Ltd | Display device and its driving control method |
| US8279202B2 (en) * | 2008-08-25 | 2012-10-02 | Chrontel International Ltd. | Methods of making and using an apparatus for providing multi-touch sensing capability using an LCD screen without an extra touch screen layer |
| JP5177013B2 (en) * | 2009-02-25 | 2013-04-03 | セイコーエプソン株式会社 | Display device with touch sensor function |
| TWI428797B (en) * | 2010-04-02 | 2014-03-01 | Novatek Microelectronics Corp | Displaying apparatus with touch function and 2d sensing method of touch panel |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100595640C (en) * | 2004-09-24 | 2010-03-24 | 三星电子株式会社 | Touch detectable display device and driving method thereof |
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| CN102645999A (en) | 2012-08-22 |
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Granted publication date: 20151028 Termination date: 20210302 |