CN111679762B - Method for transmitting touch driving signal, touch chip and electronic equipment - Google Patents
Method for transmitting touch driving signal, touch chip and electronic equipment Download PDFInfo
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- CN111679762B CN111679762B CN202010803745.7A CN202010803745A CN111679762B CN 111679762 B CN111679762 B CN 111679762B CN 202010803745 A CN202010803745 A CN 202010803745A CN 111679762 B CN111679762 B CN 111679762B
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
Abstract
The application provides a method for transmitting a touch driving signal, a touch chip and an electronic device, which can effectively reduce the influence of the touch driving signal in a touch screen on a display screen. The method comprises the following steps: acquiring a pixel updating interval of a pixel circuit in a display screen, wherein the pixel updating interval is a time interval when the pixel circuit receives a data driving signal; and generating a touch driving signal of the touch screen according to the pixel updating interval, wherein the part of the touch driving signal in the pixel updating interval is a constant value.
Description
Technical Field
The embodiment of the application relates to the field of touch control, and more particularly, to a method for transmitting a touch drive signal, a touch chip and an electronic device.
Background
With the development of the display screen technology based on an Active Matrix Organic Light Emitting Diode (AMOLED), the distance between a touch electrode, i.e., a sensor electrode, and a display cathode in the display screen is closer and closer, the amplitude of a signal coupling a touch driving signal to the display cathode is also larger and larger, and the signal is coupled to a driving Data Line (Data Line) through the display cathode of the display screen to form a crosstalk coupling path. Therefore, once the driving signal is output on the touch sensing electrode, the display screen is interfered, so that an interference pattern similar to water ripples is displayed, and the user experience is greatly influenced.
Disclosure of Invention
The embodiment of the application provides a method for transmitting a touch driving signal, a touch chip and an electronic device, which can effectively reduce the influence of the touch driving signal in a touch screen on a display screen.
In a first aspect, a method for transmitting a touch driving signal is provided, including:
acquiring a pixel updating interval of a pixel circuit in a display screen, wherein the pixel updating interval is a time interval when the pixel circuit receives a data driving signal;
and generating a touch driving signal of the touch screen according to the pixel updating interval, wherein the part of the touch driving signal in the pixel updating interval is a constant value.
In this embodiment, since the pixel update interval of the pixel circuit in the display screen is easily affected by the touch driving signal of the touch screen, the pixel update interval of the pixel circuit of the display screen is considered when generating the touch driving signal, so that the portion of the touch driving signal in the pixel update interval is a constant value, that is, the touch driving signal is not inverted in the pixel update interval, thereby effectively reducing the influence of the touch driving signal in the touch screen on the display screen.
In a possible implementation manner, the turning time of the touch driving signal is a starting time of the pixel update interval, or an ending time of the pixel update interval, or a time interval outside the pixel update interval.
In a possible implementation manner, the generating a touch driving signal of a touch screen includes: acquiring a preset driving signal; and generating the touch driving signal based on the preset driving signal.
In this embodiment, the touch driving signal is generated based on the preset driving signal, and the touch driving signal meeting the requirement can be obtained by adjusting the preset driving signal according to the pixel update interval.
In a possible implementation manner, the generating a touch driving signal of a touch screen includes: and when the turning moment of the preset driving signal is within the pixel updating interval, adjusting the turning moment of the preset driving signal to the starting moment or the ending moment of the pixel updating interval to obtain the touch driving signal.
In this embodiment, when the turning time of the preset driving signal is within the pixel updating interval, the turning time of the preset driving signal is adjusted to the starting time or the ending time of the pixel updating interval, so that the obtained touch driving signal is a constant value within the pixel updating interval, and the influence of the touch driving signal on the display screen can be effectively reduced.
In a possible implementation manner, the frequency of the touch driving signal is the same as the frequency of the data driving signal, or the frequency of the touch driving signal is different from the frequency of the data driving signal, or the touch driving signal is a spread spectrum signal.
In a possible implementation manner, the generating the touch driving signal of the touch screen according to the pixel update interval includes: acquiring a preset driving signal; and when the turning moment of the preset driving signal is within the pixel updating interval, adjusting the phase of the preset driving signal to obtain the touch driving signal.
In this embodiment, under the condition that the frequency of the touch driving signal is the same as the frequency of the data driving signal, when the inversion time of the preset driving signal is located in the pixel updating interval, the phase of the preset driving signal may be adjusted, so that the pulse intervals of the obtained touch driving signal and the data driving signal are not overlapped, thereby effectively reducing the influence of the touch driving signal on the display screen.
In a second aspect, a touch chip is provided, including:
the display device comprises an acquisition module, a display module and a control module, wherein the acquisition module is used for acquiring a pixel updating interval of a pixel circuit in a display screen, and the pixel updating interval is a time interval when the pixel circuit receives a data driving signal; and the number of the first and second groups,
and the signal generation module is used for generating a touch driving signal of the touch screen according to the pixel updating interval, wherein the part of the touch driving signal in the pixel updating interval is a constant value.
In a possible implementation manner, the signal generating module is specifically configured to: acquiring a preset driving signal; and generating the touch driving signal based on the preset driving signal.
In a possible implementation manner, the signal generating module is specifically configured to: and when the turning moment of the preset driving signal is within the pixel updating interval, adjusting the turning moment of the preset driving signal to the starting moment or the ending moment of the pixel updating interval to obtain the touch driving signal.
In a possible implementation manner, the frequency of the touch driving signal is the same as the frequency of the data driving signal, or the frequency of the touch driving signal is different from the frequency of the data driving signal, or the touch driving signal is a spread spectrum signal.
In a possible implementation manner, the frequency of the touch driving signal is the same as the frequency of the data driving signal, and the signal generating module is specifically configured to: and when the turning moment of the preset driving signal is within the pixel updating interval, adjusting the phase of the preset driving signal to obtain the touch driving signal.
In a third aspect, an electronic device is provided, which includes the touch chip in the second aspect or any possible implementation manner of the second aspect.
Drawings
Fig. 1 is a schematic flowchart of a method for transmitting a touch driving signal according to an embodiment of the present disclosure.
Fig. 2 is a schematic diagram of a touch driving signal when the touch driving signal and a data driving signal have the same frequency.
Fig. 3 is a schematic diagram of a touch driving signal when the touch driving signal and a data driving signal have the same frequency.
Fig. 4 is a schematic diagram of a touch driving signal when the touch driving signal and a data driving signal have different frequencies.
Fig. 5 is a schematic diagram of a touch driving signal when the touch driving signal is a spread spectrum signal.
Fig. 6 is a schematic block diagram of a touch chip according to an embodiment of the present application.
Detailed Description
The technical solution of the present application will be described below with reference to the accompanying drawings.
The display panel includes a pixel circuit array including a plurality of pixel circuits, which may also be referred to as pixel driving circuits. For a certain row of pixel circuits, a pixel update interval of the row of pixel circuits, or referred to as a pixel update enable interval, may be determined according to a row synchronization signal (referred to as Hsync signal) of the display screen, so as to update pixels of the display screen. It is to be understood that the pixel update interval of the pixel circuit is a time interval in which the Data drive signal (Data Driver) from the Data Line (Data Line) is written to the pixel circuit. The Hsync signal is used as an output signal of a display standard, and a data driving signal is input into a row of pixel circuits in each period of the Hsync signal to update pixels. One or more of the Hsync signals may be considered as a pixel update interval, and the relationship between the Hsync signals and the pixel update interval is determined by the driving method of the Display panel, the control timing of a Display Driver Integrated Circuit (DDIC), and the like.
For a display screen, especially an AMOLED display screen, since the display screen and the touch screen are closer to each other, a pixel update interval of a pixel circuit is easily interfered by a touch driving signal from the touch screen, and therefore the pixel update interval is also called a display sensitive interval. If the touch driving signal is turned over in the pixel updating interval, the display screen will present an interference pattern similar to a water ripple, which greatly affects the user experience. Therefore, when the touch driving signal is generated, if the pixel update interval of the display screen is not considered, interference may be caused to the pixel circuit of the display screen.
Therefore, the scheme for transmitting the touch driving signal is provided, and the influence of the touch driving signal in the touch screen on the display screen can be effectively reduced.
Fig. 1 shows a schematic flow chart of a method of transmitting a control signal according to an embodiment of the present application. The method may be performed, for example, by a touch chip of a touch screen, as shown in fig. 1, and the method 100 includes some or all of the following steps.
In step 110, a pixel update interval of a pixel circuit in a display screen is obtained, where the pixel update interval is a time interval when the pixel circuit receives a data driving signal.
In step 120, a touch driving signal of the touch screen is generated according to the pixel update interval, and a portion of the touch driving signal within the pixel update interval is a constant value.
In this embodiment, since the pixel update interval of the pixel circuit in the display screen is easily affected by the touch driving signal of the touch screen, when the touch driving signal is generated, the pixel update interval of the display screen is considered, so that the portion of the touch driving signal in the pixel update interval is a constant value, that is, the touch driving signal is not inverted in the pixel update interval, thereby effectively reducing the influence of the touch driving signal in the touch screen on the pixel circuit of the display screen.
If the touch driving signal is inverted in the pixel update interval, the pixel circuit is interfered, and therefore, when the touch driving signal is generated, the inversion time of the touch driving signal needs to be kept away from the pixel update interval. For example, the turning time of the touch driving signal may be moved to the start time or the end time of the pixel update interval; or the turning moment of the touch signal is moved to a time interval outside the pixel updating interval.
The waveform and frequency of the touch driving signal in the touch screen are not limited in the embodiment of the application. In general, the touch driving signal may employ a rectangular wave. The frequency of the touch driving signal may be the same as the frequency of the data driving signal received by the pixel circuit, or may be different from the frequency of the data driving signal received by the pixel circuit; alternatively, the frequency of the touch driving signal may be constantly changed, for example, the touch driving signal is a spread spectrum signal.
In general, the frequency of the data driving signal input to the pixel circuit through the data line is the same as the frequency of the row synchronization signal of the display screen. Therefore, it can also be said that the frequency of the touch driving signal may be the same as or different from the frequency of the line synchronization signal of the display screen.
The embodiment of the present application does not limit how to generate the touch driving signal. For example, the touch driving signal whose inversion time is not within the pixel update interval may be directly generated according to the pixel update interval; for another example, in step 120, generating a touch driving signal of the touch screen may include: and acquiring a preset driving signal, and generating the touch driving signal based on the preset driving signal.
The preset driving signal may be, for example, a touch driving signal set according to a touch detection requirement of the touch screen without considering a pixel update interval of the display screen. The touch chip may generate the preset driving signal first, and then appropriately adjust parameters such as a turning time or a phase of the preset driving signal, so as to obtain the touch driving signal.
For the case that the frequency of the touch driving signal is the same as the frequency of the data driving signal, taking fig. 2 as an example, the 1 st line is shown as a row synchronizing signal, and in one period T1 of the row synchronizing signal, one row of pixel circuits of the display screen is driven, so that the data of the row of pixel circuits is updated. Line 2 shows Data driving signals that are simultaneously received by the pixel circuits in the row when the pixel circuits in the row are turned on, and the digital driving signals are used to push the Data lines (Data lines) to apply voltage signals to the pixel circuits in the row. The time period for writing the voltage signal on the Data Line into the pixel driving circuit is the pixel update interval. It should be understood that one pixel update interval T2 in fig. 1 is a pixel update interval of one row of pixel circuits.
As shown in fig. 2, the preset driving signal in row 3 has the same frequency as the data driving signal, but the inversion time of the preset voltage signal is within the pixel update interval, which affects the data update of the pixel circuit. Therefore, when the inversion time of the preset driving signal is within the pixel update interval, the inversion time of the preset driving signal may be adjusted to the start time or the end time of the pixel update interval to obtain the touch driving signal.
The 4 th row and the 5 th row in fig. 2 show the touch driving signal output by the touch chip, wherein the touch driving signal shown in the 4 th row can be obtained by adjusting the turning time of the preset driving signal in the pixel updating interval to the end time of the pixel updating interval T2, which is equivalent to increasing the duty ratio of the touch driving signal; the turning time of the preset driving signal in the pixel updating interval is adjusted to the starting time of the pixel updating interval T2, so as to obtain the touch driving signal shown in row 5, which is equivalent to reducing the duty ratio of the touch driving signal.
It can be seen that the touch driving signal obtained in this way is a constant value in the pixel update interval T2, so that no interference is caused to the pixel circuit.
In addition to adjusting the turning time of the preset driving signal, for the case that the frequency of the touch driving signal is the same as the frequency of the data driving signal, as shown in fig. 3, the phase of the preset driving signal may be adjusted when the turning time of the preset driving signal is within the pixel update interval, so as to obtain the touch driving signal. As shown in the 4 th row and the 5 th row in fig. 3, after the phase of the preset driving signal is adjusted, the obtained touch driving signal is a constant value in the pixel update interval T2, so that the pixel circuit is not interfered.
For the case that the frequency of the touch driving signal is different from the frequency of the data driving signal, taking fig. 4 as an example, the 1 st line is shown as a row synchronizing signal, and in one period T1 of the row synchronizing signal, a row of pixel circuits of the display screen is driven, so that the data of the row of pixel circuits is updated. Line 2 shows Data driving signals, and when the pixel circuits in the row are turned on, the pixel circuits in the row receive the Data driving signals at the same time, and the digital driving signals are used to push the Data Line, so that voltage signals are applied to the pixel circuits in the row. The time period for writing the voltage signal on the Data Line into the pixel driving circuit is the pixel update interval. The Data driving signal may also be referred to as a Data Line signal. It should be understood that one pixel update interval T2 in fig. 4 is a pixel update interval of one row of pixel circuits.
As shown in fig. 4, the preset driving signal in row 3 has a different frequency from the data driving signal, and the inversion time of the preset voltage signal is located in the pixel update interval, thereby affecting the data update of the pixel circuit. Therefore, when the inversion time of the preset driving signal is within the pixel update interval, the inversion time of the preset driving signal may be adjusted to the start time or the end time of the pixel update interval to obtain the touch driving signal.
In fig. 4, the 4 th row and the 5 th row show the touch driving signal output by the touch chip, wherein the touch driving signal shown in the 4 th row can be obtained by adjusting the turning time of the preset driving signal in the pixel updating interval to the ending time of the pixel updating interval T2; the turning time of the preset driving signal in the pixel updating interval is adjusted to the starting time of the pixel updating interval T2, so as to obtain the touch driving signal shown in row 5.
It can be seen that the touch driving signal obtained in this way is a constant value in the pixel update interval T2, so that no interference is caused to the pixel circuit.
For the case where the frequency of the touch driving signal is variable, for example, the touch driving signal is a spread spectrum signal, and in fig. 5 as an example, the 1 st line is a row synchronization signal, and in one period T1 of the row synchronization signal, a row of pixel circuits of the display screen is driven, so that data of the row of pixel circuits is updated. Line 2 shows Data driving signals, and when the pixel circuits in the row are turned on, the pixel circuits in the row receive the Data driving signals at the same time, and the digital driving signals are used to push the Data Line, so that voltage signals are applied to the pixel circuits in the row. The time period for writing the voltage signal on the Data Line into the pixel driving circuit is the pixel update interval. It should be understood that one pixel update interval T2 in fig. 5 is a pixel update interval of one row of pixel circuits.
As shown in fig. 5, the preset driving signal in row 3 has a different frequency from the data driving signal, and the inversion time of the preset voltage signal is located in the pixel update interval, thereby affecting the data update of the pixel circuit. Therefore, when the inversion time of the preset driving signal is within the pixel update interval, the inversion time of the preset driving signal may be adjusted to the start time or the end time of the pixel update interval to obtain the touch driving signal.
In fig. 5, the 4 th row and the 5 th row show the touch driving signal output by the touch chip, wherein the touch driving signal shown in the 4 th row can be obtained by adjusting the turning time of the preset driving signal in the pixel updating interval to the ending time of the pixel updating interval T2; the turning time of the preset driving signal in the pixel updating interval is adjusted to the starting time of the pixel updating interval T2, so as to obtain the touch driving signal shown in row 5.
It can be seen that the touch driving signal obtained in this way is a constant value in the pixel update interval T2, so that no interference is caused to the pixel circuit.
Fig. 2 to 5 only show the case where there is a pixel update interval within one period T1 of the line synchronization signal. When a plurality of segments of pixel update intervals exist in one period T1 of the line synchronization signal, for example, when the display screen includes three RGB sub-pixels or two sub-pixels, three or two segments of pixel update intervals exist in the period T1, at this time, the adjustment manner of the preset driving signal in each segment of pixel update interval is the same as the adjustment manner shown above, and for brevity, no further description is given here.
As can be seen from fig. 2 to 5, whether the inversion time triggered by the rising edge of the touch driving signal is within the pixel update interval of the pixel circuit or the inversion time triggered by the falling edge of the touch driving signal is within the pixel update interval, the inversion time may be adjusted in the above manner to the start time or the end time of the pixel update interval. And the touch drive signal is output at the part outside the pixel updating interval according to a preset waveform.
In the embodiment of the application, the pixel update interval of the display screen can be provided by a supplier of the display screen, or can be obtained by self-testing. For example, in the process of testing the pixel update interval, touch driving signals with different phases may be continuously output, and the position of the pixel update interval may be determined according to the interference condition presented by the display screen. When the display screen presents obvious interference, the overturning moment of the output touch driving signal can be determined to be positioned in the pixel updating interval of the display screen, and therefore the pixel updating interval of the display screen can be tested step by step through the mode.
The present application further provides a touch chip, as shown in fig. 6, the touch chip 600 includes:
an obtaining module 610, configured to obtain a pixel update interval of a pixel circuit in a display screen, where the pixel update interval is a time interval when the pixel circuit receives a data driving signal; and the number of the first and second groups,
and a signal generating module 620, configured to generate a touch driving signal of the touch screen according to the pixel update interval, where a portion of the touch driving signal located in the pixel update interval is a constant value.
In one implementation manner, the turning time of the touch driving signal is a starting time of the pixel update interval, or an ending time of the pixel update interval, or a time interval outside the pixel update interval.
In one implementation, the signal generating module 620 is specifically configured to: acquiring a preset driving signal; and generating the touch driving signal based on the preset driving signal.
In one implementation, the signal generating module 620 is specifically configured to: and when the turning moment of the preset driving signal is within the pixel updating interval, adjusting the turning moment of the preset driving signal to the starting moment or the ending moment of the pixel updating interval to obtain the touch driving signal.
In one implementation, the frequency of the touch driving signal is the same as the frequency of the data driving signal, or the frequency of the touch driving signal is different from the frequency of the data driving signal, or the touch driving signal is a spread spectrum signal.
In one implementation, the frequency of the touch driving signal is the same as the frequency of the data driving signal, and the signal generating module 620 is specifically configured to: and when the turning moment of the preset driving signal is within the pixel updating interval, adjusting the phase of the preset driving signal to obtain the touch driving signal.
The present application further provides an electronic device including the touch chip 600 shown in fig. 6.
It should be noted that, without conflict, the embodiments and/or technical features in the embodiments described in the present application may be arbitrarily combined with each other, and the technical solutions obtained after the combination also fall within the protection scope of the present application.
The system, apparatus and method disclosed in the embodiments of the present application can be implemented in other ways. For example, some features of the method embodiments described above may be omitted or not performed. The above-described device embodiments are merely illustrative, the division of the unit is only one logical functional division, and there may be other divisions when the actual implementation is performed, and a plurality of units or components may be combined or may be integrated into another system. In addition, the coupling between the units or the coupling between the components may be direct coupling or indirect coupling, and the coupling includes electrical, mechanical or other connections.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes and the generated technical effects of the above-described apparatuses and devices may refer to the corresponding processes and technical effects in the foregoing method embodiments, and are not described herein again.
It should be understood that the specific examples in the embodiments of the present application are for the purpose of promoting a better understanding of the embodiments of the present application, and are not intended to limit the scope of the embodiments of the present application, and that various modifications and variations can be made by those skilled in the art based on the above embodiments and fall within the scope of the present application.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (13)
1. A method for transmitting a touch driving signal, comprising:
acquiring a pixel updating interval of a pixel circuit in a display screen, wherein the pixel updating interval is positioned between adjacent line synchronous signals of the display screen, and the pixel updating interval is a time interval when the pixel circuit receives a data driving signal from a data line;
and generating a touch driving signal of the touch screen according to the pixel updating interval, wherein the part of the touch driving signal in the pixel updating interval is always at a high level or a low level.
2. The method according to claim 1, wherein the inversion time of the touch driving signal is a start time of the pixel update interval, an end time of the pixel update interval, or a time interval outside the pixel update interval.
3. The method according to claim 1 or 2, wherein the generating of the touch driving signal of the touch screen comprises:
acquiring a preset driving signal;
and generating the touch driving signal based on the preset driving signal.
4. The method according to claim 3, wherein the generating the touch driving signal based on the preset driving signal comprises:
and when the turning moment of the preset driving signal is within the pixel updating interval, adjusting the turning moment of the preset driving signal to the starting moment or the ending moment of the pixel updating interval to obtain the touch driving signal.
5. The method according to claim 4, wherein the frequency of the touch driving signal is the same as the frequency of the data driving signal, or the frequency of the touch driving signal is different from the frequency of the data driving signal, or the touch driving signal is a spread spectrum signal.
6. The method of claim 3, wherein the frequency of the touch driving signal is the same as the frequency of the data driving signal, and the generating the touch driving signal of the touch screen according to the pixel update interval comprises:
acquiring a preset driving signal;
and when the turning moment of the preset driving signal is within the pixel updating interval, adjusting the phase of the preset driving signal to obtain the touch driving signal.
7. A touch chip, comprising:
the device comprises an acquisition module, a data driving module and a control module, wherein the acquisition module is used for acquiring a pixel updating interval of a pixel circuit in a display screen, the pixel updating interval is positioned between adjacent line synchronous signals of the display screen, and the pixel updating interval is a time interval when the pixel circuit receives a data driving signal; and the number of the first and second groups,
and the signal generation module is used for generating a touch driving signal of the touch screen according to the pixel updating interval, wherein the part of the touch driving signal in the pixel updating interval is always high level or low level.
8. The touch chip of claim 7, wherein the inversion time of the touch driving signal is a start time of the pixel update interval, an end time of the pixel update interval, or a time interval outside the pixel update interval.
9. The touch chip of claim 7 or 8, wherein the signal generation module is specifically configured to:
acquiring a preset driving signal;
and generating the touch driving signal based on the preset driving signal.
10. The touch chip of claim 9, wherein the signal generation module is specifically configured to:
and when the turning moment of the preset driving signal is within the pixel updating interval, adjusting the turning moment of the preset driving signal to the starting moment or the ending moment of the pixel updating interval to obtain the touch driving signal.
11. The touch chip of claim 10, wherein the frequency of the touch driving signal is the same as the frequency of the data driving signal, or the frequency of the touch driving signal is different from the frequency of the data driving signal, or the touch driving signal is a spread spectrum signal.
12. The touch chip of claim 9, wherein the frequency of the touch driving signal is the same as the frequency of the data driving signal, and the signal generation module is specifically configured to:
and when the turning moment of the preset driving signal is within the pixel updating interval, adjusting the phase of the preset driving signal to obtain the touch driving signal.
13. An electronic device, comprising the touch chip of any one of claims 7 to 12.
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| CN103488331A (en) * | 2013-05-14 | 2014-01-01 | 友达光电股份有限公司 | Touch display and driving method thereof |
| CN104484077A (en) * | 2015-01-05 | 2015-04-01 | 深圳市华星光电技术有限公司 | Display panel having touch control function and touch control detection method thereof |
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| KR101230309B1 (en) * | 2006-01-27 | 2013-02-06 | 삼성디스플레이 주식회사 | Display device and processing apparatus of sensing signal |
| KR101321996B1 (en) * | 2008-04-25 | 2013-10-25 | 엘지디스플레이 주식회사 | Liquid Crystal Display Device And Method For Driving Thereof |
| JP2011209434A (en) * | 2010-03-29 | 2011-10-20 | Sony Corp | Display device and electronic device |
| US9141247B2 (en) * | 2011-04-13 | 2015-09-22 | Japan Display Inc. | Display panel with touch detection function, method of driving the same, driving circuit, and electronic unit |
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| CN103488331A (en) * | 2013-05-14 | 2014-01-01 | 友达光电股份有限公司 | Touch display and driving method thereof |
| CN104484077A (en) * | 2015-01-05 | 2015-04-01 | 深圳市华星光电技术有限公司 | Display panel having touch control function and touch control detection method thereof |
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