CN102645999A - Touch control display device - Google Patents
Touch control display device Download PDFInfo
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- CN102645999A CN102645999A CN2012100531336A CN201210053133A CN102645999A CN 102645999 A CN102645999 A CN 102645999A CN 2012100531336 A CN2012100531336 A CN 2012100531336A CN 201210053133 A CN201210053133 A CN 201210053133A CN 102645999 A CN102645999 A CN 102645999A
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Abstract
The invention relates to a touch control display device. The touch control display device comprises a display panel, a touch panel, a gate driver and a touch sensor. The touch panel is configured corresponding to the display panel. The gate driver is coupled with the display panel and the touch panel and used for outputting a plurality of scanning signals to the display panel in sequence and outputting a plurality of driving signals to the touch panel in sequence, and the output time of the scanning signals is not overlapped with the output time of the driving signals. The touch sensor is coupled with the touch panel, and is used for calculating a touch position according to a sensing signal output by the touch panel. According to the touch control display device, the gate driver generates the driving signals of the touch panel, so the signal to noise ratio of the sensing signal of the touch panel is improved, and the hardware cost can be reduced; and moreover, the output times of the scanning signals and the driving signals are different, so interference of an electric field of the display panel to the touch panel is reduced.
Description
Technical field
The present invention relates to a kind of touch control display apparatus, particularly a kind of touch control display apparatus of integrating driving circuit.
Background technology
Along with showing being showing improvement or progress day by day of science and technology, people are borrowing the auxiliary of display can make life convenient more, and for asking light, the thin characteristic of display, (flat panel display FPD) becomes present main flow to impel flat-panel screens.In recent years, various electronic product all constantly strides forward towards the direction of easy and simple to handle, small size and screen sizes, and particularly portable electronic product is more strict for the requirement of volume and screen size.Therefore, many electronic products are all integrated the design and the display panel of touch, with omission keyboard or the required space of 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 the display panel or outward and be affixed on the display panel.Contact panel is divided 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.And because modular cause, the driving circuit of display panel generally can separate with the driving circuit of contact panel and designs so that the driving circuit of the driving circuit of display panel and contact panel separately independence operate.
Be affixed on the display panel owing to be built in the display panel or outward in the contact panel, so the sensing signal that contact panel is exported is easy to receive the electric field of display panel to influence, so that influence the touch-control quality (like sensitivity and accuracy) of contact panel.At present, the mode that promotes the touch-control quality of contact panel has two kinds: first kind is on contact panel, to increase by a guarded electrode layer again, with the interference of inhibition display panel to contact panel, and then reduces the interference volume of the electric field of display panel to contact panel; Second kind of voltage quasi position for the drive signal that improves contact panel, with the signal to noise ratio of the sensing signal that increases contact panel (Signal to Noise Ratio, SNR).Though aforesaid way can improve the interference of display panel to contact panel, will certainly increase the cost of touch control display apparatus.
Summary of the invention
In view of the deficiency of 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 signal of contact panel, with the signal to noise ratio of the sensing signal that improves contact panel, and can reduce hardware cost; And the district is at a distance from the output time of sweep signal and drive signal, with the interference to contact panel of the electric field of reduction 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 disposing; Gate pole driver couples contact panel and display panel, and in order to export a plurality of sweep signals to display panel in regular turn and to export a plurality of drive signals in regular turn to contact panel, wherein the output time of the output time of these sweep signals and these drive signals does not overlap; Touch sensing couples contact panel, and calculates a position of touch according to a sensing signal of contact panel output.
In one embodiment of this invention, gate pole driver is exported these sweep signals in regular turn during picture shows, gate pole driver is exported these sweep signals in regular turn 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 signals.
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 a plurality of gate drive chips, wherein these drive signals of these gate drive chips difference outputs.
In one embodiment of this invention, gate pole driver has a plurality of gate drive chips, and wherein these drive signals are by these gate drive chip outputs of part.
In one embodiment of this invention, these drive signals see through a plurality of subsequent use pin position output of these gate drive chips.
In one embodiment of this invention; Touch sensing is judged the output time of each drive signal according to sequential; With when receiving sensing signal; Output time according to each drive signal is judged first axial coordinate that position of touch is corresponding, and judges second axial coordinate that position of touch is corresponding according to the output pin position of sensing signal.
In one embodiment of this invention, touch control display apparatus more comprises time schedule controller, in order to control grid driver these sweep signals of output and these drive signals.
In one embodiment of this invention, touch sensing is for being integrated in the time schedule controller.
In one embodiment of this invention, contact panel is built in the display panel in being or is attached on the display panel.
The present invention has the following advantages: at first, this touch control display apparatus sees through the drive signal of gate pole driver output, with the signal to noise ratio of lifting sensing signal, and can save hardware cost; Secondly, because the output time of sweep signal and the output time of drive signal do not overlap, therefore can reduce the interference of display panel to contact panel.
For letting the above-mentioned feature and advantage of the present invention can be more obviously understandable, hereinafter is special lifts embodiment, and cooperates appended graphic elaborating as follows.
Description of drawings
Fig. 1 is the system schematic according to the touch control display apparatus of one embodiment of the invention.
Fig. 2 is the sequential synoptic diagram of Fig. 1 according to the sweep signal and the drive signal of one embodiment of the invention.
Fig. 3 is the wiring synoptic diagram of Fig. 1 according to gate pole driver, display panel and the contact panel of one embodiment of the invention.
Fig. 4 is the wiring synoptic diagram of Fig. 1 according to gate pole driver, display panel and the contact panel of another embodiment of the present invention.
Fig. 5 is the system schematic according to the touch control display apparatus of 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: the gate drive chip
430: perforation
DR: drive signal
FDP: during picture shows
SC: sweep signal
SE: sensing signal
TP: position of touch
VB: during the vertical blank
VP: pixel voltages.
Embodiment
Fig. 1 is the system schematic according to the touch control display apparatus of one embodiment of the invention.Please with reference 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 panels 140 and is disposed; That is contact panel 150 can in be built in the display panel 140 or be attached on the display panel 140, this can know the assembly that the knowledgeable adopts and decide that the embodiment of the invention is not as limit usually according to this area.
According to above-mentioned; Because the voltage quasi position (being about 20 ~ 30 volts) of sweep signal SC can be much larger than the driving voltage (being about 3.3 ~ 5 volts) of traditional contact panel; So the drive signal DR that gate pole driver 120 is exported also can be much larger than the driving voltage of traditional contact panel; Therefore can promote the signal to noise ratio of sensing signal SE, and can save the circuit that produces drive signal DR and reduce hardware cost.And, because the output time of these sweep signals SC do not overlap with the output time of these drive signals DR, that is the time that writes image to display panel 140 do not overlap with the time of scanning contact panel 150.Because the electric field of display panel 140 when writing image can be stronger, therefore write the scanning that time outside the image carries out contact panel 150 and can reduce of the interference of the electric field of display panel 140 contact panel 150 at display panel 140.
Further; Time schedule controller 110 can transmit in order to the signal of control grid driver 120 (for example vertical start signal) or transmit corresponding clock signal to touch sensing 160; So that touch sensing 160 can see through the signal output timing that count frequency is understood gate pole driver 120, and touch sensing 160 can be judged the output time of each drive signal DR according to the signal output timing of gate pole driver 120.Is example at this contact panel 150 with capacitive character touch-control panel; Because each drive signal DR can export in regular turn; Therefore the output time of each drive signal DR determines the axial coordinate (like the Y axle) of position of touch TP, and another axial coordinate of position of touch TP (like the X axle) then is decided by the output pin position of sensing signal SE.Therefore; When touch sensing 160 receives sensing signal SE; Can judge first axial coordinate (for example Y axial coordinate) that position of touch TP is corresponding according to the output time of each drive signal DR, and judge second axial coordinate (for example Y axial coordinate) that position of touch TP is corresponding according to the output pin position of sensing signal SE.By this, can more simplify and carry out the required control signal of touch-control scanning.
In an embodiment of the present invention; Contact panel 150 is not limited to capacitive character touch-control panel; And can be receive a plurality of drive signal DR in regular turn and according to the position of touching in the pin position of correspondence the contact panel of output sensing signal SE, for example digital resistance contact panel.
Fig. 2 is the sequential synoptic diagram of Fig. 1 according to the sweep signal and the drive signal of one embodiment of the invention.Please with reference to Fig. 1 and Fig. 2; In the present embodiment; Gate pole driver 120 is controlled by time schedule controller 110 and during picture shows, exports a plurality of sweep signal SC in regular turn to display panel 140 among the FDP; And during vertical blank, export a plurality of drive signal DR among the VB in regular turn to contact panel 150, that is the falling edge of last sweep signal SC can trigger gate pole driver 120 beginning and exports a plurality of drive signal DR in regular turn.Wherein, during picture shows during FDP and the vertical blank combination of VB can be considered during the picture.
Generally speaking, the quantity of the required drive signal DR of the time span of contact panel 150 VB during the scanning times of VB during the vertical blank is decided by vertical blank, contact panel 150 and the pulse bandwidth of drive signal DR.Under the situation of the fixed amount of the required drive signal DR of fixing and contact panel 150, contact panel 150 scanning times of VB during vertical blank is decided by the pulse bandwidth of these drive signals DR in time of VB during the vertical blank.That is; The pulse bandwidth of drive signal DR is wide more, and the scanning times of contact panel 150 VB during vertical blank is few more, and the pulse bandwidth of drive signal DR is narrow more; The scanning times of contact panel 150 VB during vertical blank is many more, and this can know that usually the knowledgeable sets up on their own according to this area.In addition when the scanning times of contact panel 150 VB during vertical blank many more, then the sensitivity of touch-control is high more, this can know the knowledgeable and decide according to this area usually.Wherein, the pulse bandwidth of drive signal DR can be controlled by time schedule controller 110, but other embodiment of the present invention is not as limit.
In addition; When the scanning times of contact panel 150 VB during vertical blank greater than 1; Then gate pole driver 120 can repeat to send these drive signals DR, that is gate pole driver 120 can the configuration additional control circuit triggers gate pole driver 120 and repeats to send these drive signals DR.When the scanning times of contact panel VB during vertical blank is 1; That is during vertical blank among the VB each drive signal DR only export once; Then gate pole driver 120 must not repeat to send these drive signals DR; That is must not dispose additional control circuit and trigger gate pole driver 120 and repeat to send these drive signals DR, can simplify the circuit of gate pole driver 120 by this.
Fig. 3 is the wiring synoptic diagram of Fig. 1 according to gate pole driver, display panel and the contact panel of one embodiment of the invention.Please with reference to Fig. 1 and Fig. 3, in the present embodiment, being attached at display panel 140 with contact panel 150 is example.And gate pole driver 120 has a plurality of gate drive chips (as 310,320), and these gate drive chips (as 310,320) are in order to produce sweep signal SC, and wherein drive signal DR is by gate drive chip (as the 310) output of part.Quantity in order to the gate drive chip of exporting these drive signals DR is decided for the demand according to actual set, is illustrated as in order to explanation.And gate drive chip (as 310) can utilize its subsequent use pin position to come output drive signal DR, therefore can not influence the function of its output scanning signal SC.
In the present embodiment, drive signal DR can see through extra wiring and be sent to contact panel 150.Because contact panel 150 is attached on the display panel 140, therefore above-mentioned extra wiring can be formed on the colored optical filtering substrates of display panel 140 surface with respect to liquid crystal layer.
Fig. 4 is the wiring synoptic diagram of Fig. 1 according to gate pole driver, display panel and the contact panel of another embodiment of the present invention.Please with reference to Fig. 1 and Fig. 4, in the present embodiment, being attached at display panel 140 with contact panel 150 is example.Gate pole driver 120 has a plurality of gate drive chips (as 410,420); Wherein these gate drive chips (as 410,420) are distinguished the drive signal DR of output; That is gate drive chip (as 410,420) is except wanting output scanning signal SC; Also can export at least one drive signal DR, and the quantity of the drive signal DR that each gate drive chip (as 410,420) is exported can along with retouch the quantity of the required drive signal DR of the contact panel swept 150 and become.
Share under the situation of output drive signal DR at gate drive chip (as 410,420); Drive signal DR can equally see through the inside that wiring is sent to display panel 140 earlier with sweep signal SC; Can form perforation 430 this moment on display panel 140, so that drive signal DR sees through corresponding perforation 430 and is sent to contact panel 150.By this; Because drive signal DR is sent to the path of contact panel 150 can be similar; That is each drive signal DR is roughly the same by the energy dissipation that gate drive chip (as 410,420) is sent to contact panel 150; Therefore the voltage quasi position of the sensing signal SE of contact panel 150 outputs can be roughly the same, also can improve the uniformity coefficient of touch-control sensing, and then improve the touch-control quality.
Fig. 5 is the system schematic according to the touch control display apparatus of another embodiment of the present invention.Please with reference 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, touch sensing 511 is integrated in the time schedule controller 510, wherein touch sensing 511 can then repeat no more at this with reference to touch sensing 160.By this, can not must additional configuration touch sensing and reduce hardware cost.
In sum, the touch control display apparatus of the embodiment of the invention, it sees through the drive signal of gate pole driver output, promoting the signal to noise ratio of sensing signal, and can save the circuit that produces drive signal and reduces hardware cost.Secondly, because the output time of sweep signal and the output time of drive signal do not overlap, therefore can reduce the interference of display panel to contact panel.And touch sensing can be judged the output time of each drive signal according to the signal output timing of gate pole driver, therefore can more simplify and carry out the required control signal of touch-control scanning.Moreover the gate drive chip can be shared output drive signal so that each drive signal be sent to the path of contact panel can be similar, use the uniformity coefficient that improves touch-control sensing, and then improve the touch-control quality.More the person can be integrated in touch sensing in the time schedule controller, therefore can not must additional configuration touch sensing and reduce hardware cost.
Though the present invention discloses as above with embodiment; Right its is not in order to limit the present invention, to have common knowledge the knowledgeable in any affiliated technical field, not break away from the spirit and scope of the present invention; When doing a little change and retouching, so protection scope of the present invention is as the criterion with claims.
Claims (11)
1. a touch control display apparatus is characterized in that, comprising:
One display panel;
One contact panel is to should display panel and dispose;
One gate pole driver; Couple this contact panel and this display panel; In order to export a plurality of sweep signals to this display panel in regular turn and to export a plurality of drive signals in regular turn to this contact panel, wherein the output time of the output time of those sweep signals and those drive signals does not overlap; And
One touch sensing couples this contact panel, and calculates a position of touch according to a sensing signal of this contact panel output.
2. touch control display apparatus according to claim 1 is characterized in that: this gate pole driver is exported those sweep signals in regular turn during a picture shows, this gate pole driver is exported those sweep signals in regular turn during a vertical blank.
3. touch control display apparatus according to claim 2 is characterized in that: the scanning times of this contact panel during this vertical blank is decided by the pulse bandwidth of those drive signals.
4. touch control display apparatus according to claim 2 is characterized in that: the scanning times of this contact panel during this vertical blank is 1.
5. touch control display apparatus according to claim 1 is characterized in that: this gate pole driver has a plurality of gate drive chips, wherein those drive signals of those gate drive chips difference outputs.
6. touch control display apparatus according to claim 1 is characterized in that: this gate pole driver has a plurality of gate drive chips, and wherein those drive signals are by those gate drive chip outputs of part.
7. touch control display apparatus according to claim 1 is characterized in that: those drive signals see through a plurality of subsequent use pin position output of those gate drive chips.
8. touch control display apparatus according to claim 1; It is characterized in that: this touch sensing is judged the output time of each those drive signal according to sequential; With when receiving this sensing signal; Output time according to each those drive signal is judged one first axial coordinate that this position of touch is corresponding, and judges one second axial coordinate that this position of touch is corresponding according to the output pin position of this sensing signal.
9. touch control display apparatus according to claim 1 is characterized in that: more comprise time schedule controller, in order to control this gate pole driver those sweep signals of output and those drive signal.
10. touch control display apparatus according to claim 9 is characterized in that: this touch sensing is for being integrated in this time schedule controller.
11. touch control display apparatus according to claim 1 is characterized in that: this contact panel is built in this display panel in being or is attached on this display panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210053133.6A CN102645999B (en) | 2012-03-02 | 2012-03-02 | Touch control display apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210053133.6A CN102645999B (en) | 2012-03-02 | 2012-03-02 | Touch control display apparatus |
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| CN102645999A true CN102645999A (en) | 2012-08-22 |
| CN102645999B CN102645999B (en) | 2015-10-28 |
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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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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103677354A (en) * | 2012-09-03 | 2014-03-26 | 炬力集成电路设计有限公司 | Control equipment and signal sampling method |
| CN103713788A (en) * | 2012-09-28 | 2014-04-09 | 瑞萨Sp驱动器公司 | Semiconductor device and electronic device |
| CN104575371A (en) * | 2013-10-24 | 2015-04-29 | 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 |
| CN105161067A (en) * | 2015-10-14 | 2015-12-16 | 深圳市华星光电技术有限公司 | GOA circuit, display panel and display device |
| CN106983438A (en) * | 2015-10-30 | 2017-07-28 | 德国福维克控股公司 | Device for connecting electrical connector |
| CN109685020A (en) * | 2018-11-20 | 2019-04-26 | 友达光电股份有限公司 | Integrated touch control display apparatus and its driving method |
| CN110998705A (en) * | 2017-08-17 | 2020-04-10 | 三星电子株式会社 | Electronic device and display for reducing leakage current |
| CN112596638A (en) * | 2020-12-30 | 2021-04-02 | 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 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103677354A (en) * | 2012-09-03 | 2014-03-26 | 炬力集成电路设计有限公司 | Control equipment and signal sampling method |
| CN103713788A (en) * | 2012-09-28 | 2014-04-09 | 瑞萨Sp驱动器公司 | Semiconductor device and electronic device |
| CN103713788B (en) * | 2012-09-28 | 2018-03-30 | 辛纳普蒂克斯日本合同会社 | Semiconductor devices and electronic equipment |
| CN104575371A (en) * | 2013-10-24 | 2015-04-29 | 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 |
| CN105161067A (en) * | 2015-10-14 | 2015-12-16 | 深圳市华星光电技术有限公司 | GOA circuit, display panel and display device |
| CN106983438B (en) * | 2015-10-30 | 2020-12-15 | 德国福维克控股公司 | Device for connecting electrical connections |
| CN106983438A (en) * | 2015-10-30 | 2017-07-28 | 德国福维克控股公司 | Device for connecting electrical connector |
| CN110998705A (en) * | 2017-08-17 | 2020-04-10 | 三星电子株式会社 | Electronic device and display for reducing leakage current |
| CN109685020A (en) * | 2018-11-20 | 2019-04-26 | 友达光电股份有限公司 | Integrated touch control display apparatus and its driving method |
| CN112596638A (en) * | 2020-12-30 | 2021-04-02 | 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 |
| WO2022141697A1 (en) * | 2020-12-30 | 2022-07-07 | 深圳市华星光电半导体显示技术有限公司 | Display panel and driving method therefor |
| 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 |
| US12079425B2 (en) | 2020-12-30 | 2024-09-03 | Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Display panel and driving method thereof |
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