CN103941935A - Capacitive touch screen, driving method of capacitive touch screen and display device - Google Patents
Capacitive touch screen, driving method of capacitive touch screen and display device Download PDFInfo
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- CN103941935A CN103941935A CN201310563630.5A CN201310563630A CN103941935A CN 103941935 A CN103941935 A CN 103941935A CN 201310563630 A CN201310563630 A CN 201310563630A CN 103941935 A CN103941935 A CN 103941935A
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Abstract
The invention provides a capacitive touch screen, a driving method of a capacitive touch screen and a display device. The touch screen comprises a plurality of driving line groups which are arranged in sequence. Each driving line group comprises at least one driving line, and each driving line comprises a driving main line and a driving leading line which are connected in series. The driving method includes the steps that original driving voltage is applied on one end of the driving leading line of each driving line of each driving line group to drive the driving line, and the amplitude of the original driving voltage of at least one driving line in each driving line group is the same. The original driving voltage applied on the driving lines with big equivalent resistance of the driving leading lines is larger than the original driving voltage applied on the driving lines with small equivalent resistance of the driving leading lines. Correspondingly, the invention further provides the capacitive touch screen and the display device which are suitable for the driving method, and the signal to noise ratio of the driving signal is improved.
Description
Technical field
The present invention relates to touch-screen field, relate in particular to a kind of capacitance touch screen and driving method thereof, display device.
Background technology
Current, the growing maturation of touch technology, increasing product is integrated touch-screen.Existing capacitance touch screen generally comprises drive wire and the line of induction, the driving circuit of capacitance touch screen is generally uniformly distributed and is formed by these drive wires and the line of induction, the driving circuit of capacitance touch screen sends certain driving signal, then sensed line receives, and the line of induction is determined touch location by signal magnitude.But, due to the diverse location of different drive wires in same screen, length of arrangement wire between drive wire is widely different, cause the impedance inequality between drive wire, RC value (product of the resistance capacitance) difference that makes the driving signal of driving circuit (drive IC), causes signal in amplitude, to produce decay in various degree.Drive wire from drive IC away from more, its RC value is larger, and signal amplitude decay is more serious; Drive wire from drive IC close to more, its RC value is less, and signal amplitude decay is less, has finally caused the overall signal to noise ratio (S/N ratio) inequality of touch-screen.
For fear of the phenomenon of above-mentioned signal to noise ratio (S/N ratio) inequality, the method that prior art is used is to increase successively the live width of longer drive wire, reduce its RC value, with the signal to noise ratio (S/N ratio) of the whole touch-screen of balance, but this method complex operation, and cannot address the above problem completely.
Summary of the invention
In view of this, the invention provides a kind of capacitance touch screen and driving method thereof, display device.
Particularly, the driving method of a kind of capacitance touch screen provided by the invention, described touch-screen comprises the multiple drive wire groups that are arranged in order, and each drive wire group comprises at least one drive wire, and described in each, drive wire comprises the driving main line of series connection and drives lead-in wire.Described driving method comprises successively to driving lead-in wire one end of each drive wire of described multiple drive wire groups and applies original driving voltage to drive described drive wire, and the original driving voltage amplitude of at least one drive wire in each described drive wire group is identical.The original driving voltage that the large drive wire of equivalent resistance of described driving lead-in wire is applied in is greater than the original driving voltage that the little drive wire of equivalent resistance of described driving lead-in wire is applied in.
A kind of capacitance touch screen provided by the invention, comprises the multiple drive wire groups that are arranged in order, and each drive wire group comprises at least one drive wire, and described in each, drive wire comprises the driving main line of series connection and drives lead-in wire.Described capacitance touch screen also comprises a driver module, described driver module sends original driving signal by described driving lead-in wire to each drive wire in described multiple drive wire groups successively, the original driving signal amplitude that each described drive wire group receives is identical, and the original driving voltage that is applied in of the large drive wire of equivalent resistance of described driving lead-in wire is greater than the original driving voltage that the little drive wire of equivalent resistance of described driving lead-in wire is applied in.
Capacitive touch screen of the present invention divides into groups to drive wire, and to not on the same group drive wire provide the driving signal of different amplitudes, drive with the voltage signal of different amplitudes respectively.Consider the factor such as distribution situation, the impedance difference of drive wire of drive wire on touch-screen, give not successively the driving signal of the different amplitudes of drive wire on the same group, so that the large defect of signal to noise ratio (S/N ratio) difference causing because drive wire impedance is different is compensated.
The present invention correspondingly also provides a kind of display device, and described display device comprises above-mentioned capacitance touch screen.
Brief description of the drawings
Fig. 1 is the work schematic diagram of capacitance touch screen of the present invention;
Fig. 2 is the schematic diagram that each drive wire group of capacitance touch screen of the present invention comprises many drive wires;
Fig. 3 is the schematic diagram that each drive wire group of capacitance touch screen of the present invention only comprises a drive wire.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Set forth in the following description a lot of details so that fully understand the present invention, implemented but the present invention can also adopt other to be different from alternate manner described here, therefore the present invention is not subject to the restriction of following public specific embodiment.
Embodiment mono-
The present embodiment provides a kind of capacitance touch screen, as shown in Figure 1, described capacitance touch screen comprises the multiple drive wire group G1, G2, G3, the G4 that are arranged in order ... each drive wire group comprises at least one drive wire, for example drive wire group G1 comprises drive wire X1, X2, drive wire group G2 comprises drive wire X3, X4, drive wire group G3 comprises drive wire X5, X6, drive wire group G4 comprises drive wire X7, X8 ... described in each, drive wire comprises the driving main line of series connection and drives lead-in wire, and for example drive wire X8 comprises driving main line 81 and drives lead-in wire 82.Described capacitance touch screen also comprises a driver module, described driver module sends original driving signal U by each described driving lead-in wire to each drive wire X1～X8 in described multiple drive wire group G1～G4 successively, the amplitude of the original driving signal U that each described drive wire group receives is identical, and the original drive voltage signal U that is applied in of the large drive wire of equivalent resistance of described driving lead-in wire is greater than the original drive voltage signal U that the little drive wire of equivalent resistance of described driving lead-in wire is applied in.
In the present embodiment by drive wire is divided into groups, and to not on the same group drive wire provide the original driving voltage of different amplitudes, make each group of drive wire after the dividing potential drop of driving lead-in wire separately, the actual driving voltage U0 that outputs to driving main line is separately convergent, compensate the diverse location that every group of drive wire is positioned at touch-screen, due to the different actual problems that drive the driving voltage U0 on main line to be decayed to some extent in each group of drive wire that are applied to that cause of impedance of driving lead-in wire separately, make driving main line one side of final not drive wire on the same group can export substantially identical driving voltage U0, avoid driving the decay of signal in transmittance process.
It should be noted that, " amplitude of the original driving voltage U of at least one drive wire in each described drive wire group is identical " here refers to that the amplitude of original driving voltage U of at least one drive wire in each described drive wire group is identical substantially.Because comprise two and above drive wire in drive wire described in every group in, the impedance of the driving lead-in wire of each drive wire in a group has a little difference in acceptable degree, so in the time will making the driving main line one side U0 of each drive wire in described this group export identical driving voltage amplitude, just correspondingly can in acceptable degree, there is a little difference in the go between amplitude of the original driving voltage U that a side applies of described driving.These a little differences are very little and insignificant compared with the amplitude of the original driving voltage U between each group, therefore can accept, and do not affect the essence of the present embodiment.
In the situation that Fig. 1 shows, what need to describe is, apply original driving voltage U to drive described drive wire to driving lead-in wire one end of each drive wire of described multiple drive wire groups successively, refer to and drive successively X1, X2, X3 ... X8, and impose on the original driving voltage U of every drive wire at the driving of each the drive wire side A place that goes between, for example, in the time driving drive wire X8, apply original driving voltage U at driving lead-in wire 82 side A places that are connected with described driver module of drive wire X8.
Actual being applied in each group of drive wire drives the driving voltage U0 on main line, and the original driving voltage U that refers to each drive wire is through after the driving lead-in wire of each drive wire, the driving voltage value U0 on the actual driving main line that exports each drive wire to.For example, in the time driving X8, the driving voltage U0 on the actual driving main line that is applied to drive wire X8 is exactly that drive wire X8 drives main line 81 and drives the lead-in wire 82 actual driving voltage U08 that receive in interface B8 place at it.
The original driving voltage that the large drive wire of equivalent resistance of described driving lead-in wire is applied in is greater than the original driving voltage that the little drive wire of equivalent resistance of described driving lead-in wire is applied in.In the present embodiment, preferred, each drives the equivalent resistance of main line identical, and the equivalent resistance of drive wire X1 to X8 depends on the equivalent resistance of the driving lead-in wire of each described drive wire so.Further preferred, the material of each described driving lead-in wire is identical with cross-sectional area, and so described each drives the equivalent resistance of lead-in wire to be just proportional to the length of self.Therefore, the equivalent resistance of the long drive wire of described driving lead-in wire is just greater than the go between equivalent resistance of short drive wire of described driving, so according to " the original driving voltage that the large drive wire of equivalent resistance of described driving lead-in wire is applied in is greater than the original driving voltage that the little drive wire of equivalent resistance of described driving lead-in wire is applied in ", the original driving voltage that the long drive wire of described driving lead-in wire is applied in is greater than with regard to the described driving original driving voltage that short drive wire is applied in that goes between.
Particularly, in Fig. 1, the original driving voltage U8=U08+I8*R8 that drive wire X8 is applied in, the original driving voltage U6=U06+I6*R6 that drive wire X6 is applied in.When shown in capacitance touch screen when work, preferably, for keep whole touch-screen drive wire everywhere actual output to each drive lead-in wire one side drive voltage signal amplitude identical, also be U08=U06, in the case of the equivalent resistance of the driving main line of preferred each drive wire is identical, the drive current I8 that flows through drive wire X8 equals to flow through the drive current I6 of drive wire X6, be greater than so the driving wire length of drive wire X6 due to the driving wire length of drive wire X8, therefore the equivalent resistance R8 of the driving of drive wire X8 lead-in wire is greater than the equivalent resistance R6 of the driving lead-in wire of drive wire X6.Therefore according to above formula, obtain original driving voltage amplitude U8 that the driving lead-in wire A place, one end of drive wire X8 applies and be greater than drive wire X6 at its driving original driving voltage amplitude U6 that A place, one end applies that goes between.In like manner, the original driving voltage U6 that drive wire X6 is applied in is greater than the original driving voltage U4 that drive wire X4 is applied in, and the original driving voltage U4 that drive wire X4 is applied in is greater than the original driving voltage U2 that drive wire X2 is applied in.Therefore, the original driving voltage size that each drive wire group is applied in depends on the equivalent resistance of drive wire in each drive wire group, irrelevant with the sequencing driving.
In a preferred embodiment, each described drive wire group comprises many drive wires, and described in the quantity of many drive wires comprising identical.As shown in Figure 2, each described drive wire group (G1, G2, G3) comprises 3 drive wires, apply original driving voltage U to driving lead-in wire one end of each the drive wire X1 to X9 of multiple drive wire group G1, G2, G3 successively, and the original driving voltage amplitude of 3 drive wires in drive wire group G1 is all 2.95V, the original driving voltage amplitude of 3 drive wires in drive wire group G2 is all 2.96V, and the original driving voltage amplitude of 3 drive wires in drive wire group G3 is all 2.97V.
More preferred, each described drive wire group only comprises a drive wire, and as shown in Figure 3, drive wire group G1 only comprises drive wire X1, and drive wire group G2 only comprises drive wire X2, and drive wire group G3 only comprises drive wire X3.The original driving voltage that the large drive wire of equivalent resistance of described driving lead-in wire is applied in is greater than the original driving voltage that the little drive wire of equivalent resistance of described driving lead-in wire is applied in.Therefore, driving main line equivalent resistance at drive wire X1, X2, X3 is identical, and the material and the xsect that drive lead-in wire are all in identical situation, the original driving voltage amplitude that drive wire X1 can be set is 2.95V, the original driving voltage amplitude of drive wire X2 is 2.96V, and the original driving voltage amplitude of drive wire X3 is 2.97V.
It should be noted that, the above-mentioned voltage magnitude increasing progressively between drive wire group described in each in is for example all 0.01V, and the voltage magnitude in fact increasing progressively both can be the same or different, or part same section difference.For example the original driving voltage amplitude of G1 group is 2.94V, the original driving voltage amplitude of G2 group is 2.95V, the original driving voltage amplitude of G3 group is 2.98V, the original driving voltage amplitude of G4 group is 2.99V ... therefore, here only for clearly illustrating and give an example, can not limit the present embodiment with this.
In another embodiment, in described multiple drive wire groups, described at least one, drive wire group only comprises a drive wire, and described in all the other, in drive wire group, each group comprises many drive wires.
Preferably, each the described drive wire in described drive wire group is driven respectively by the different driving port of a drive IC (integrated circuit, integrated circuit).
Preferably, in this enforcement, described driver module can drive described multiple drive wire group by shift register.That is to say that described driving signal sends by shift register, simplified like this structure of the driving circuit of periphery, reduced the area that peripheral driving circuit takies, make the integrated level of touch-screen higher, resource used still less.
More preferred, described driver module can also comprise a booster circuit, and described booster circuit is greater than for the original driving voltage of realizing the large drive wire of equivalent resistance of described driving lead-in wire and being applied in the original driving voltage that the little drive wire of equivalent resistance of described driving lead-in wire is applied in.Concrete, described booster circuit can be the external device that boosts, and coordinates level translator (level shift) to realize; Also can be the various registers in the drive IC of driver module inside, realize above-mentioned boosting by the setting of this internal register.
Embodiment bis-
The present embodiment correspondingly provides a kind of driving method of capacitance touch screen, still with reference to figure 1, described touch-screen comprises the multiple drive wire group G1, G2, G3, the G4 that are arranged in order, each drive wire group comprises at least one drive wire, for example, in Fig. 1, drive wire group G1 comprises two drive wire X1, X2, and and for example drive wire group G2 comprises two drive wire X3, X4.Described in each, drive wire comprises the driving main line of series connection and drives lead-in wire, and for example, in Fig. 1, drive wire X8 comprises the driving main line 81 of series connection and drives lead-in wire 82.Described driving method comprises successively to driving lead-in wire one end A of each drive wire of described multiple drive wire groups and applies original driving voltage U to drive described drive wire, and the amplitude of the original driving voltage U of at least one drive wire in each described drive wire group is identical.The original driving voltage that the large drive wire of equivalent resistance of described driving lead-in wire is applied in is greater than the original driving voltage that the little drive wire of equivalent resistance of described driving lead-in wire is applied in.
The present embodiment applies the original driving voltage U of different amplitudes by a side that the driving of drive wire on the same group is not gone between, make each group of drive wire after the dividing potential drop of driving lead-in wire separately, the actual driving voltage U0 that outputs to driving main line is separately convergent, compensate the diverse location that every group of drive wire is positioned at touch-screen, due to the different actual problems that drive the driving voltage U0 on main line to be decayed to some extent in each group of drive wire that are applied to that cause of impedance of driving lead-in wire separately, make driving main line one side of final not drive wire on the same group can export substantially identical driving voltage U0, avoid driving the decay of signal in transmittance process.
It should be noted that, " amplitude of the original driving voltage U of at least one drive wire in each described drive wire group is identical " here refers to that the amplitude of original driving voltage U of at least one drive wire in each described drive wire group is identical substantially.Because comprise two and above drive wire in drive wire described in every group in, the impedance of the driving lead-in wire of each drive wire in a group has a little difference in acceptable degree, so in the time will making the driving main line one side U0 of each drive wire in described this group export identical driving voltage amplitude, just correspondingly can in acceptable degree, there is a little difference in the go between amplitude of the original driving voltage U that a side applies of described driving.These a little differences are very little and insignificant compared with the amplitude of the original driving voltage U between each group, therefore can accept, and do not affect the essence of the present embodiment.
Preferably, export to each described driving main line driving voltage amplitude equate.
The original driving voltage that the large drive wire of equivalent resistance of described driving lead-in wire is applied in is greater than the original driving voltage that the little drive wire of equivalent resistance of described driving lead-in wire is applied in.In the present embodiment, preferred, each drives the equivalent resistance of main line identical, and the equivalent resistance of drive wire X1 to X8 depends on the equivalent resistance of the driving lead-in wire of each described drive wire so.Further preferred, the material of each described driving lead-in wire is identical with cross-sectional area, and so described each drives the equivalent resistance of lead-in wire to be just proportional to the length of self.Therefore, the equivalent resistance of the long drive wire of described driving lead-in wire is just greater than the go between equivalent resistance of short drive wire of described driving, so according to " the original driving voltage that the large drive wire of equivalent resistance of described driving lead-in wire is applied in is greater than the original driving voltage that the little drive wire of equivalent resistance of described driving lead-in wire is applied in ", the original driving voltage that the long drive wire of described driving lead-in wire is applied in is greater than with regard to the described driving original driving voltage that short drive wire is applied in that goes between, also in Fig. 1, drive wire X8(or drive wire X7) the original driving voltage that is applied in is greater than drive wire X6(or drive wire X5), drive wire X4(or drive wire X3), drive wire X2(or drive wire X1) the original driving voltage that is applied in.Therefore, the original driving voltage size that each drive wire group is applied in depends on the equivalent resistance of drive wire in each drive wire group, irrelevant with the sequencing driving.
It should be noted that, principle of work concrete in the present embodiment is identical with embodiment mono-, and the understanding of some parts, noun, sentence meaning can, with reference to the explanation in embodiment mono-, not repeat them here.
In a preferred embodiment, each described drive wire group comprises many drive wires, and described in the quantity of many drive wires comprising identical.As shown in Figure 2, each described drive wire group (G1, G2, G3) comprises 3 drive wires, apply original driving voltage U to driving lead-in wire one end of each the drive wire X1 to X9 of multiple drive wire group G1, G2, G3 successively, and the original driving voltage amplitude of 3 drive wires in drive wire group G1 is all 2.95V, the original driving voltage amplitude of 3 drive wires in drive wire group G2 is all 2.96V, and the original driving voltage amplitude of 3 drive wires in drive wire group G3 is all 2.97V.
More preferred, each described drive wire group only comprises a drive wire, and as shown in Figure 3, drive wire group G1 only comprises drive wire X1, and drive wire group G2 only comprises drive wire X2, and drive wire group G3 only comprises drive wire X3.The original driving voltage that the large drive wire of equivalent resistance of described driving lead-in wire is applied in is greater than the original driving voltage that the little drive wire of equivalent resistance of described driving lead-in wire is applied in.Therefore, driving main line equivalent resistance at X1, X2, X3 is identical, and the material and the xsect that drive lead-in wire are all in identical situation, the original driving voltage amplitude that drive wire X1 can be set is 2.95V, the original driving voltage amplitude of drive wire X2 is 2.96V, and the original driving voltage amplitude of drive wire X3 is 2.97V.
It should be noted that, the above-mentioned voltage magnitude increasing progressively between drive wire group described in each in is for example all 0.01V, and the voltage magnitude in fact increasing progressively both can be the same or different, or part same section difference.For example the original driving voltage amplitude of G1 group is 2.94V, the original driving voltage amplitude of G2 group is 2.95V, the original driving voltage amplitude of G3 group is 2.98V, the original driving voltage amplitude of G4 group is 2.99V ... therefore, here only for clearly illustrating and give an example, can not limit the present embodiment with this.
In another embodiment, in described multiple drive wire groups, described at least one, drive wire group only comprises a drive wire, and described in all the other, in drive wire group, each group comprises many drive wires.
Preferably, each the described drive wire in described drive wire group is driven respectively by the different driving port of a drive IC (integrated circuit, integrated circuit).
The present invention also correspondingly provides a kind of display device that has comprised the capacitance touch screen described in embodiment bis-.This display device has better touching signals signal to noise ratio (S/N ratio).
It should be noted that, above embodiment can use for reference mutually, Integrated using.Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can utilize method and the technology contents of above-mentioned announcement to make possible variation and amendment to technical solution of the present invention; therefore; every content that does not depart from technical solution of the present invention; any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present invention, all belong to the protection domain of technical solution of the present invention.
Claims (18)
1. the driving method of a capacitance touch screen, described touch-screen comprises the multiple drive wire groups that are arranged in order, each drive wire group comprises at least one drive wire, described in each, drive wire comprises the driving main line of series connection and drives lead-in wire, it is characterized in that, described driving method comprises successively to driving lead-in wire one end of each drive wire of described multiple drive wire groups and applies original driving voltage to drive described drive wire, and the original driving voltage amplitude of at least one drive wire in each described drive wire group is identical; The original driving voltage that the large drive wire of equivalent resistance of described driving lead-in wire is applied in is greater than the original driving voltage that the little drive wire of equivalent resistance of described driving lead-in wire is applied in.
2. driving method as claimed in claim 1, is characterized in that, each described drive wire group meets following relation:
U=U0+IR
Wherein, U is the original driving voltage amplitude that driving lead-in wire one end of each drive wire of described drive wire group applies, U0 is the actual driving voltage amplitude that exports described driving main line to of described drive wire group, I is the drive current that flows through described drive wire group, and R is the equivalent resistance that drives lead-in wire described in described drive wire group.
3. driving method as claimed in claim 1, is characterized in that, respectively drives the equivalent resistance of main line identical.
4. driving method as claimed in claim 3, it is characterized in that, the material of each described driving lead-in wire is identical with cross-sectional area, and the original driving voltage that the long drive wire of described driving lead-in wire is applied in is greater than the described driving original driving voltage that short drive wire is applied in that goes between.
5. driving method as claimed in claim 1, is characterized in that, the driving voltage amplitude that exports each described driving main line to equates.
6. driving method as claimed in claim 1, is characterized in that, each described drive wire group comprises many drive wires, and described in the quantity of many drive wires comprising identical.
7. driving method as claimed in claim 1, is characterized in that, in described multiple drive wire groups, described at least one, drive wire group only comprises a drive wire, and described in all the other, in drive wire group, each group comprises many drive wires.
8. driving method as claimed in claim 1, is characterized in that, each the described drive wire in described drive wire group is driven respectively by the different driving port of a drive IC.
9. a capacitance touch screen, comprises the multiple drive wire groups that are arranged in order, and each drive wire group comprises at least one drive wire, and described in each, drive wire comprises the driving main line of series connection and drives lead-in wire; One driver module, described driver module sends original driving signal by described driving lead-in wire to each drive wire in described multiple drive wire groups successively, the original driving signal amplitude that each described drive wire group receives is identical, and the original driving voltage that is applied in of the large drive wire of equivalent resistance of described driving lead-in wire is greater than the original driving voltage that the little drive wire of equivalent resistance of described driving lead-in wire is applied in.
10. capacitance touch screen as claimed in claim 9, is characterized in that, each described drive wire group meets following relation:
U=U0+IR
Wherein, U is the original driving voltage amplitude that driving lead-in wire one end of each drive wire of described drive wire group applies, U0 is the actual driving voltage amplitude that exports described driving main line to of described drive wire group, I is the drive current that flows through described drive wire group, and R is the equivalent resistance that drives lead-in wire described in described drive wire group.
11. capacitance touch screens as claimed in claim 9, is characterized in that, respectively drive the equivalent resistance of main line identical.
12. capacitance touch screens as claimed in claim 11, it is characterized in that, the material of each described driving lead-in wire is identical with cross-sectional area, and the original driving voltage that the long drive wire of described driving lead-in wire is applied in is greater than the described driving original driving voltage that short drive wire is applied in that goes between.
13. capacitance touch screens as claimed in claim 9, is characterized in that, the driving voltage amplitude that exports each described driving main line to equates.
14. capacitance touch screens as claimed in claim 9, is characterized in that, each described drive wire group comprises many drive wires, and described in the quantity of many drive wires comprising identical.
15. capacitance touch screens as claimed in claim 9, is characterized in that, in described multiple drive wire groups, described at least one, drive wire group only comprises a drive wire, and described in all the other, in drive wire group, each group comprises many drive wires.
16. capacitance touch screens as claimed in claim 9, is characterized in that, described driver module drives described multiple drive wire group by shift register.
17. capacitance touch screens as claimed in claim 9, it is characterized in that, described driver module also comprises a booster circuit, and described booster circuit is greater than for the original driving voltage of realizing the large drive wire of equivalent resistance of described driving lead-in wire and being applied in the original driving voltage that the little drive wire of equivalent resistance of described driving lead-in wire is applied in.
18. 1 kinds of display device, is characterized in that, comprise capacitance touch screen claimed in claim 9.
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| CN201310563630.5A CN103941935B (en) | 2013-11-14 | 2013-11-14 | A kind of capacitance touch screen and its driving method, display device |
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| CN201310563630.5A CN103941935B (en) | 2013-11-14 | 2013-11-14 | A kind of capacitance touch screen and its driving method, display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448228A (en) * | 2016-01-14 | 2016-03-30 | 京东方科技集团股份有限公司 | Driving signal automatic adjusting method and apparatus |
| WO2020037868A1 (en) * | 2018-08-21 | 2020-02-27 | 广州视源电子科技股份有限公司 | Touchscreen |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3219185B2 (en) * | 1995-08-23 | 2001-10-15 | キヤノン株式会社 | Electron generating device, image display device, their driving circuit, and driving method |
| CN1435893A (en) * | 2002-01-30 | 2003-08-13 | 胜园科技股份有限公司 | Organic LED display electrode lead layout structure |
| US8830180B2 (en) * | 2008-04-10 | 2014-09-09 | Atmel Corporation | Capacitive position sensor |
| CN102081477A (en) * | 2010-12-29 | 2011-06-01 | 广东中显科技有限公司 | Multi-point touch panel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448228A (en) * | 2016-01-14 | 2016-03-30 | 京东方科技集团股份有限公司 | Driving signal automatic adjusting method and apparatus |
| WO2020037868A1 (en) * | 2018-08-21 | 2020-02-27 | 广州视源电子科技股份有限公司 | Touchscreen |
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| CN103941935B (en) | 2018-12-11 |
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