CN109933241B - Touch display driving method, touch display driving device and touch display screen - Google Patents
Touch display driving method, touch display driving device and touch display screen Download PDFInfo
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- CN109933241B CN109933241B CN201910205395.1A CN201910205395A CN109933241B CN 109933241 B CN109933241 B CN 109933241B CN 201910205395 A CN201910205395 A CN 201910205395A CN 109933241 B CN109933241 B CN 109933241B
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Abstract
The invention provides a touch display driving method, a touch display driving device and a touch display screen, and belongs to the technical field of display. The touch display driving method is used for driving a touch display substrate, wherein the touch display substrate comprises a base, and a plurality of electrode blocks are arranged on the base; the electrode blocks are multiplexed into a common electrode and a touch drive electrode in a time-sharing manner; the touch display driving method comprises the following steps: writing a common voltage into the electrode block when the touch display substrate is in a display stage; writing a touch driving voltage into the electrode block when the touch display substrate is in a touch stage; the touch display substrate is divided into a plurality of control areas, and each control area comprises a plurality of electrode blocks; the step of writing the touch driving voltage into the electrode block specifically includes: in the same control area, touch driving voltage larger than the common voltage is input to part of the electrode blocks, and touch driving voltage smaller than the common voltage is input to part of the electrode blocks.
Description
Technical Field
The invention belongs to the technical field of display, and particularly relates to a touch display driving method, a touch display driving device and a touch display screen.
Background
The TDDI (Touch and Display Driver Integration) technology integrates Touch sensing and Display driving functions into a single chip, which has the advantages of reducing the cost of a Touch Display substrate, improving Touch sensitivity, reducing Display noise, and making the thickness thinner.
A touch technology in the TDDI technology generally adopts a self-capacitance mode, and usually a common electrode of a touch display substrate is shared with a touch electrode, that is, a plurality of electrode blocks are provided, each electrode block is individually connected to one signal line, and in a display stage, a common voltage Vcom is input to the electrode block, and at this time, the electrode block serves as the common electrode; and inputting touch driving voltage to the electrode block in a touch detection stage, wherein the electrode block is used as a touch electrode.
The touch display substrate can be divided into a plurality of control areas (blocks) due to the large number of the electrode blocks, and each block comprises a plurality of electrode blocks. The TDDI chip controls the electrode blocks in a partitioned manner, and a common voltage or a touch driving voltage is input to a plurality of electrode blocks in the same block.
The inventors have found that, in the process of displaying on the touch display substrate in which the common electrode and the touch electrode are shared, a display defect similar to a block shape is likely to occur.
Disclosure of Invention
The present invention is directed to at least one of the technical problems in the prior art, and provides a touch display driving method for reducing the display defect of a touch display panel caused by a touch driving voltage.
The technical scheme adopted for solving the technical problem is a touch display driving method which is used for driving a touch display substrate, wherein the touch display substrate comprises a base, and a plurality of electrode blocks are arranged on the base; the electrode blocks are multiplexed into a common electrode and a touch drive electrode in a time-sharing manner; the touch display driving method comprises the following steps: writing a common voltage into the electrode block when the touch display substrate is in a display stage; writing a touch driving voltage into the electrode block when the touch display substrate is in a touch stage;
the touch display substrate is divided into a plurality of control areas, and each control area comprises a plurality of electrode blocks;
the step of writing the touch driving voltage to the electrode block specifically includes: in the same control area, a touch driving voltage larger than the common voltage is input to part of the electrode blocks, and a touch driving voltage smaller than the common voltage is input to part of the electrode blocks.
Preferably, a difference value between the average value of the touch voltages input to the electrode blocks in the same control area and the common voltage is smaller than a preset value.
Preferably, the step of writing the touch driving voltage to the electrode block specifically includes:
in the same control area, inputting a first touch driving voltage to part of the electrode blocks, and inputting a second touch driving voltage to part of the electrode blocks;
the first touch driving voltage is greater than the common voltage, the second touch driving voltage is less than the common voltage, and the difference value between the first touch driving voltage and the common voltage is equal to the difference value between the common voltage and the second touch driving voltage.
Further preferably, the first touch driving voltage is a positive voltage, and the second touch driving voltage is a negative voltage.
Preferably, the control regions comprise edge locations adjacent to adjacent control regions; the step of writing a touch driving voltage to the electrode block includes:
and inputting a touch driving voltage smaller than the common voltage to part of the electrode blocks and inputting a touch driving voltage larger than the common voltage to part of the electrode blocks at the edge position in the same control area.
Preferably, the step of writing the touch driving voltage to the electrode block specifically includes:
inputting different touch driving voltages to any two adjacent electrode blocks in the same control area; the touch driving voltage input to one electrode block is smaller than the common voltage, and the touch driving voltage input to the other electrode block is larger than the common voltage.
The technical scheme adopted for solving the technical problem is a touch display driving device which is used for driving a touch display substrate, wherein the touch display substrate comprises a base, and a plurality of electrode blocks are arranged on the base; the electrode blocks are multiplexed into a common electrode and a touch drive electrode in a time-sharing manner; the touch display driving device comprises a common voltage source and a touch voltage source, wherein the common voltage source is used for writing common voltage into the electrode blocks when the touch display substrate is in a display stage; when the touch display substrate is in a touch stage, the touch voltage source writes a touch driving voltage into the electrode block;
the touch display substrate is divided into a plurality of control areas, and each control area comprises a plurality of electrode blocks;
the touch driving voltage source comprises a plurality of touch driving sub-voltage sources, and the touch driving sub-voltage sources are used for inputting touch driving voltages to the corresponding electrode blocks;
in the touch driving sub-voltage sources corresponding to the electrode blocks in the same control area, part of the touch driving voltages output by the touch voltage sub-voltage sources are greater than the common voltage, and part of the touch driving voltages output by the touch voltage sub-voltage sources are less than the common voltage.
Preferably, among the touch driving sub-voltage sources corresponding to the electrode blocks in the same control area, the touch driving voltages output by the two touch driving sub-voltage sources corresponding to any two adjacent electrode blocks are different; the touch driving voltage output by one touch driving sub-voltage source is greater than the common voltage, and the touch driving voltage output by the other touch driving sub-voltage source is less than the common voltage.
The technical scheme adopted for solving the technical problem of the invention is a touch display screen which comprises any one of the touch display driving devices.
Preferably, the touch display screen further includes: the touch display substrate comprises a substrate, wherein a plurality of electrode blocks are arranged on the substrate; the electrode blocks are multiplexed into a common electrode and a touch drive electrode in a time-sharing manner;
the touch display substrate is divided into a plurality of control areas, and each control area comprises a plurality of electrode blocks.
Drawings
Fig. 1 is a schematic structural diagram of a touch display screen according to the present invention;
wherein the reference numerals are: 1. an electrode block; 2. a control area; 3. a touch display driving device.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1:
the present embodiment provides a touch display substrate, which is particularly suitable for a touch display substrate based on TDDI chip control. The touch display substrate includes: the electrode comprises a substrate and a plurality of electrode blocks 1 arranged on the substrate.
The substrate may be a rigid substrate or a flexible substrate, and the material of the substrate may include glass, polyimide, or the like. The electrode block 1 is preferably a self-contained electrode block, i.e. it acts both as a touch electrode and as an inductive electrode. In the touch control stage, a touch control driving voltage is input to the electrode block 1, when a finger touches a touch screen formed by the touch control display substrate, a coupling capacitor is induced between the finger and the electrode block 1, the voltage of the electrode block 1 changes, and therefore the touch control condition can be judged by detecting the voltage change condition of the electrode block 1. Specifically, in this embodiment, the electrode block 1 may be made of a conductive material such as ITO or IZO.
As shown in fig. 1, in the touch display substrate of the present embodiment, a plurality of electrode blocks 1 may be arranged in an array. The electrode blocks 1 are time-division multiplexed into a common electrode and a touch drive electrode. When the touch display substrate is in a display stage, a common voltage is input to each electrode block 1, namely, the electrode blocks are used as common electrodes; when the touch display substrate is in the touch stage, the electrode block 1 is inputted with a touch driving voltage, i.e., is used as a touch electrode. The electrode blocks 1 input a touch driving voltage, and at this time, the electrode blocks 1 serve as the touch driving voltage.
The touch display substrate is divided into a plurality of control regions 2 (blocks), and each control region 2 includes a plurality of electrode blocks 1. When voltage is input to the electrode blocks 1 in the touch display substrate, particularly in the touch stage, touch driving voltage may be sequentially input to the electrode blocks 1 in each control area 2 according to the divided control areas 2, so as to perform touch detection. In particular, one or more rows of electrode blocks 1 may be included in each control zone 2. In the touch stage, the touch driving voltage can be simultaneously input to all the electrode blocks 1 in one row of the control area 2, and the electrode blocks 1 of the other control areas 2 (the control areas 2 not inputting the touch driving voltage) are kept at the common voltage, so that the touch display substrate can maintain the display as much as possible, and the display effect is prevented from being influenced. Moreover, it can be understood that the touch driving voltage is sequentially input to the electrode block 1 in the partitions, so that the operation load of the touch driving chip can be reduced, the requirement on the driving capability of the touch driving chip is low, and the product cost is favorably reduced.
Preferably, the touch display substrate in this embodiment may further include a signal line, and each electrode block 1 is connected to one signal line to input electrical signals such as a common voltage, a touch driving voltage, and the like. It can be understood that, when the touch display substrate is applied to the TDDI technology, the electrode blocks 1 should also be connected to a detection line for outputting a voltage to be detected to determine the touch condition.
Example 2:
as shown in fig. 1, the present embodiment provides a touch display driving method, which can be used to drive the touch display substrate provided in embodiment 1.
The electrode blocks 1 and the control regions 2 in the touch display substrate may be arranged in various ways. To more clearly describe the touch display driving method of this embodiment, the following description will take the example that the electrode blocks 1 in the touch display substrate are arranged in an array, the control area 2 is also arranged in an array, and the control area 2 includes a plurality of electrode blocks 1.
In the touch display driving method of the present embodiment, each frame time includes a display phase and a touch phase. When the touch display substrate is in a display stage, writing a common voltage into the electrode block 1 for displaying by the touch display substrate; when the touch display substrate is in a touch stage, touch driving voltages are sequentially input to the electrode blocks 1 in each row of the control area 2 along the column direction. When the touch driving voltage is input, the touch driving voltage input to a part of the electrode blocks 1 in the same control area 2 is greater than the common voltage, and the touch driving voltage input to a part of the electrode blocks 1 is less than the common voltage.
Specifically, at the touch stage of the touch display substrate, the touch driving voltage may be sequentially input to the electrode blocks 1 in each row control area 2 along the column direction. When the touch display substrate enters a touch stage from a display stage, the voltages of all the electrode blocks 1 are kept at a common voltage, at this time, a touch driving voltage is input to all the electrode blocks 1 in the first row of control area 2, touch detection is performed, after the touch detection is completed, the common voltage is input to the electrode blocks 1 in the row of control area 2, the touch driving voltage is input to the electrode blocks 1 in the next row of control area 2, and touch driving and detection are continued.
When the touch driving voltage is input to the electrode blocks 1 in one row of the control area 2, the voltage of the electrode block 1 is changed, while the electrode blocks 1 in the other row of the control area 2 still maintain the common voltage state, and the voltage of the electrode blocks 1 in the control area 2 may be affected based on the coupling effect, so that the display of the touch display substrate may be poor.
In this embodiment, different touch driving voltages (specifically, a touch driving voltage greater than a common voltage and a touch driving voltage less than the common voltage) are input to the electrode blocks 1 in the same control area 2, so that the coupling voltage of a part of the electrode blocks 1 in the first row control area 2 to the electrode blocks 1 in the second row control area 2 is positive, the coupling voltage of a part of the electrode blocks 1 to the electrode blocks 1 in the second row control area 2 is negative, and the positive and negative coupling voltages cancel each other out, so that the coupling effect of the electrode blocks 1 in the control area 2 to which the touch driving voltage is input to the electrode blocks 1 in the peripheral control area 2 is weakened, and the display defect of the touch display substrate, which is generated based on the coupling effect, is effectively alleviated.
Preferably, the difference between the average value of the touch voltages input to the electrode blocks 1 in the same control area 2 and the common voltage is smaller than a preset value. In the touch display driving method of the present embodiment, the coupling effect can be controlled by controlling the average value of the touch voltages input to the electrode blocks 1 in the control area 2. The smaller the difference between the average value and the common voltage (i.e., the smaller the preset value), the weaker the coupling effect. Specifically, the preset value may be specifically set according to actual conditions (e.g., complexity of circuit implementation, process cost, etc.). For example, in the prior art, the touch driving voltage input to the electrode block 1 is generally a uniform fixed value and is generally 5V greater than the common voltage. Therefore, in the present embodiment, the coupling effect can be reduced compared to the prior art by controlling the difference between the average value of the touch driving voltages input to the electrode blocks 1 in the same control region 2 and the common voltage to be less than 5V.
Further preferably, in this embodiment, a difference between the average value of the touch voltages input to the electrode blocks 1 in the same control area 2 and the common voltage is the same as an absolute value of the common voltage, or in other words, in the touch voltages input to the electrode blocks 1 in the same control area 2, a touch driving voltage greater than the common voltage is a positive voltage, and a touch driving voltage less than the common voltage is a negative voltage. And the positive voltage is the same as the absolute value of the volt-age. For example, in the prior art, the value of the common voltage is usually-1V, and the range of the touch driving voltage is usually 4V to 7V. In this embodiment, preferably, on the basis of the prior art, an inverter may be added during designing the touch driving circuit, so that the range of the touch driving voltage input to a part of the electrode blocks 1 in the same control area 2 is 4V to 7V, the range of the touch driving voltage input to another part of the electrode blocks 1 is opposite, and is-7V to-4V, and at this time, the average value of the touch driving voltage input to the electrode blocks 1 in the control area 2 is about 0V, and the difference value between the touch driving voltage and the common voltage is about 1V. Therefore, when the touch driving circuit is designed, the touch driving circuit is simply improved on the basis of the existing touch driving circuit, which is beneficial to simplifying the circuit complexity, and the coupling effect of the adjacent control area 2 is obviously weakened.
Preferably, in this embodiment, the average value of the touch voltages input to the electrode blocks 1 in the same control area 2 is the same as the common voltage. It can be understood that, under the condition of not considering the complexity of the circuit, the closer the average value of the touch voltages inputted to the electrode blocks 1 in the same control area 2 is to the common voltage, the weaker the coupling effect with the adjacent control area, so in this embodiment, it is preferable to make the average value of the touch voltages inputted to the electrode blocks 1 in the same control area 2 be the same as the common voltage, so as to avoid the display defect caused by the coupling effect as much as possible.
It can be understood that, in the present embodiment, when the touch driving voltage is input to the electrode block 1, there may be a plurality of touch driving voltages greater than the common voltage, and there may also be a plurality of touch driving voltages less than the common voltage. In order to simplify the calculation complexity of the touch driving signal, it is preferable in this embodiment to input two touch driving voltages to the electrode blocks 1 in the same control area 2. Namely, a first touch driving voltage is input to the partial electrode block 1, and a second touch driving voltage is input to the partial electrode block 1; the first touch driving voltage is greater than the common voltage, the second touch driving voltage is less than the common voltage, and the difference value between the first touch driving voltage and the common voltage is equal to the difference value between the common voltage and the second touch driving voltage.
The first touch driving voltage may be a positive voltage, and the second touch driving voltage may be a negative voltage. Further, the absolute values of the first touch driving voltage and the second touch driving voltage are the same, for example: for example, the first touch driving voltage may range from 4V to 7V, and the second touch driving voltage may range from-7V to-4V, so as to implement circuit design by using an inverter, without additional complex circuits, and simplify the complexity of the touch driving circuit. Furthermore, the absolute values of the difference values between the first touch driving voltage and the common voltage are equal to each other, so that the coupling effect caused by the two touch driving voltages is counteracted as much as possible, and the influence on the display of the touch display substrate is avoided. Specifically, for example, the value of the common voltage is usually-1V, the first touch driving voltage may range from 4V to 7V, and the second touch driving voltage may range from-6V to-9V.
Because the touch display driving method of this embodiment can effectively reduce the coupling effect between the adjacent control areas 2 in the touch stage, the touch display driving method provided by this embodiment can appropriately increase the amplitude of the touch driving voltage to increase the signal-to-noise ratio of the touch display panel, and the coupling effect caused by the method is not too obvious.
Example 3:
the present embodiment provides a touch display driving method, which is similar to the touch display driving method provided in embodiment 2, and can be used for driving the touch display substrate provided in embodiment 1.
Particularly, in the present embodiment, each control region 2 of the touch display substrate includes an edge position close to the adjacent control region 2. In the touch display driving method of the present embodiment, the step of writing the touch driving voltage into the electrode block 1 includes:
at the edge position in the same control area 2, a touch driving voltage smaller than the common voltage is input to a part of the electrode blocks 1, and a touch driving voltage larger than the common voltage is input to the part of the electrode blocks 1.
It will be appreciated that the electrode blocks 1 closer to the adjacent control regions 2 are more likely to cause a coupling effect, according to the principle of the coupling effect. Therefore, in this embodiment, different touch driving voltages can be input only to the electrode blocks 1 located at the edge of the control area 2, thereby simplifying the complexity of the touch driving circuit.
Preferably, in order to ensure the coupling effect of the adjacent control areas 2 to be minimum as much as possible, different touch driving voltages can be input to any two adjacent electrode blocks 1 in the same control area 2; the touch driving voltage input to one electrode block 1 is less than the common voltage, and the touch driving voltage input to the other electrode block 1 is greater than the common voltage. In the touch control stage, in the control area 2 where the touch control driving voltage is input, the electrode blocks 1 generating different (specifically, opposite) coupling effects in the adjacent control areas 2 are uniformly distributed, so that the coupling effect of the electrode blocks 1 in the control area 2 on the electrode blocks 1 in the adjacent control areas 2 is minimized by setting the arrangement mode of the electrode blocks 1, and the influence on the display effect is minimized.
In summary, in the embodiment, the coupling effect between the control regions 2 is mainly reduced by arranging the electrode blocks 1 inputting different touch driving voltages.
It is understood that the touch driving method in this embodiment may be combined with the touch driving method in embodiment 2, and the touch display substrate is driven from two aspects of the position arrangement of the electrode blocks 1 inputting different touch driving voltages and the specific values of the touch driving voltages, so as to minimize the coupling effect between the control regions 2.
Specifically, for example, when a touch driving voltage is input to the electrode block 1 in the touch stage, a first touch driving voltage and a second touch driving voltage may be respectively input to any two adjacent electrode blocks 1 in the same control area 2, where the first touch driving voltage is greater than the common voltage, the second touch driving voltage is less than the common voltage, and absolute values of differences between the first touch driving voltage and the common voltage and between the second touch driving voltage and the common voltage are the same, that is, coupling effects of the two adjacent electrode blocks 1 in the control area 2 on the adjacent control area 2 are opposite and can be substantially cancelled, so that the display effect on the touch display substrate is very little.
Example 4:
the present embodiment provides a touch display driving device 3, which can drive a touch display substrate according to the touch display driving method provided in embodiment 2 or embodiment 3. The touch display substrate can be the touch display substrate provided in embodiment 1.
The touch display driving device 3 comprises a common voltage source and a touch voltage source, wherein the common voltage source is used for writing common voltage into the electrode block 1 when the touch display substrate is in a display stage; and when the touch display substrate is in a touch stage, the touch voltage source writes a touch driving voltage into the electrode block 1.
The touch driving voltage source comprises a plurality of touch driving sub-voltage sources, and the touch driving sub-voltage sources are used for inputting touch driving voltages to the corresponding electrode blocks 1; in the touch driving sub-voltage sources corresponding to the electrode blocks 1 in the same control area 2, the touch driving voltage output by part of the touch voltage sub-voltage sources is greater than the common voltage, and the touch driving voltage output by part of the touch voltage sub-voltage sources is less than the common voltage.
Preferably, among the touch driving sub-voltage sources corresponding to the electrode blocks 1 in the same control area 2, the touch driving voltages output by the two touch driving sub-voltage sources corresponding to any two adjacent electrode blocks 1 are different; the touch driving voltage output by one touch driving sub-voltage source is greater than the common voltage, and the touch driving voltage output by the other touch driving sub-voltage source is less than the common voltage.
Preferably, the touch display driving device 3 in this embodiment further includes a control unit, configured to control the common voltage source to write the common voltage into the electrode block 1 in the display phase; and controlling the touch control voltage source to write the touch control driving voltage into the electrode block 1 in the touch control stage.
It is understood that the touch display driving device 3 in the embodiment may be a chip, for example, a TDDI chip. In practice, a chip (specifically including an implementation of a hardware circuit, a software program, and the like) may be designed as needed.
Example 5:
the present embodiment provides a touch display screen, including the touch display driving device provided in embodiment 4.
Preferably, the touch display screen of the present embodiment may further include the touch display substrate provided in embodiment 1.
The touch display screen can be a display screen of any product or component with a display function, such as a mobile phone, a tablet personal computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
It will be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principles of the present invention, and the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A touch display driving method is used for driving a touch display substrate, wherein the touch display substrate comprises a base, and a plurality of electrode blocks are arranged on the base; the electrode blocks are multiplexed into a common electrode and a touch drive electrode in a time-sharing manner; the touch display driving method comprises the following steps: writing a common voltage into the electrode block when the touch display substrate is in a display stage; writing a touch driving voltage into the electrode block when the touch display substrate is in a touch stage; it is characterized in that the preparation method is characterized in that,
the touch display substrate is divided into a plurality of control areas, and each control area comprises a plurality of electrode blocks;
the step of writing the touch driving voltage to the electrode block specifically includes: in the same control area, the touch driving voltage larger than the public voltage is input to part of the electrode blocks, and the touch driving voltage smaller than the public voltage is input to part of the electrode blocks, so that the coupling voltages of the electrode blocks in the two parts and the electrode blocks in the adjacent control areas are respectively positive voltage and negative voltage.
2. The touch display driving method according to claim 1, wherein a difference between an average value of the touch voltages input to the electrode blocks in the same control region and the common voltage is smaller than a preset value.
3. The touch display driving method according to claim 1, wherein the step of writing the touch driving voltage to the electrode block specifically includes:
in the same control area, inputting a first touch driving voltage to part of the electrode blocks, and inputting a second touch driving voltage to part of the electrode blocks;
the first touch driving voltage is greater than the common voltage, the second touch driving voltage is less than the common voltage, and the difference value between the first touch driving voltage and the common voltage is equal to the difference value between the common voltage and the second touch driving voltage.
4. The touch display driving method according to claim 3, wherein the first touch driving voltage is a positive voltage, and the second touch driving voltage is a negative voltage.
5. The touch display driving method according to claim 1, wherein the control regions include edge positions near adjacent control regions; the step of writing a touch driving voltage to the electrode block includes:
and inputting a touch driving voltage smaller than the common voltage to part of the electrode blocks and inputting a touch driving voltage larger than the common voltage to part of the electrode blocks at the edge position in the same control area.
6. The touch display driving method according to claim 1, wherein the step of writing the touch driving voltage to the electrode block specifically includes:
inputting different touch driving voltages to any two adjacent electrode blocks in the same control area; the touch driving voltage input to one electrode block is smaller than the common voltage, and the touch driving voltage input to the other electrode block is larger than the common voltage.
7. A touch display driving device is used for driving a touch display substrate, and the touch display substrate comprises a base, wherein a plurality of electrode blocks are arranged on the base; the electrode blocks are multiplexed into a common electrode and a touch drive electrode in a time-sharing manner; the touch display driving device comprises a common voltage source and a touch voltage source, wherein the common voltage source is used for writing common voltage into the electrode blocks when the touch display substrate is in a display stage; when the touch display substrate is in a touch stage, the touch voltage source writes a touch driving voltage into the electrode block; it is characterized in that the preparation method is characterized in that,
the touch display substrate is divided into a plurality of control areas, and each control area comprises a plurality of electrode blocks;
the touch control voltage source comprises a plurality of touch control driving sub-voltage sources, and the touch control driving sub-voltage sources are used for inputting touch control driving voltages to the corresponding electrode blocks;
correspond a plurality of in the same control area electrode block a plurality of in the touch-control drive subpower source, part the touch-control drive voltage of touch-control drive subpower source output is greater than public voltage, part the touch-control drive voltage of touch-control drive subpower source output is less than public voltage to make the coupling voltage of the electrode block in two parts and the electrode block in the adjacent control area be positive pressure and negative pressure respectively.
8. The touch display driving device according to claim 7, wherein among the touch driving sub-voltage sources corresponding to the electrode blocks in the same control region, two touch driving sub-voltage sources corresponding to any two adjacent electrode blocks output different touch driving voltages; the touch driving voltage output by one touch driving sub-voltage source is greater than the common voltage, and the touch driving voltage output by the other touch driving sub-voltage source is less than the common voltage.
9. A touch display screen, characterized by comprising the touch display driving device according to claim 7 or 8.
10. The touch display screen of claim 9, further comprising:
the touch display substrate comprises a substrate, wherein a plurality of electrode blocks are arranged on the substrate; the electrode blocks are multiplexed into a common electrode and a touch drive electrode in a time-sharing manner;
the touch display substrate is divided into a plurality of control areas, and each control area comprises a plurality of electrode blocks.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103425365A (en) * | 2012-05-21 | 2013-12-04 | 乐金显示有限公司 | Display device |
| CN104750339A (en) * | 2013-12-31 | 2015-07-01 | 乐金显示有限公司 | Display device with integrated touch screen and driving method thereof |
| CN104777942A (en) * | 2015-05-08 | 2015-07-15 | 厦门天马微电子有限公司 | Touch control display panel, driving method and touch control display device |
| CN105022523A (en) * | 2014-04-28 | 2015-11-04 | 乐金显示有限公司 | Touch sensing device and driving method thereof |
| CN105739744A (en) * | 2014-12-31 | 2016-07-06 | 乐金显示有限公司 | Display device, driving method thereof and driving circuit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102650916B (en) * | 2011-02-25 | 2014-11-26 | 乐金显示有限公司 | Touch sensor integrated display device |
| CN103279247B (en) * | 2013-06-06 | 2016-08-10 | 敦泰科技有限公司 | A kind of capacitive touch screen |
| CN104503632B (en) * | 2015-01-26 | 2018-01-26 | 京东方科技集团股份有限公司 | Buffer cell, touch drive circuit, display device and its driving method |
| JP6363039B2 (en) * | 2015-03-06 | 2018-07-25 | 株式会社ジャパンディスプレイ | Display device |
| CN107015707B (en) * | 2017-06-12 | 2021-01-26 | 京东方科技集团股份有限公司 | Touch display substrate, device and driving method thereof |
-
2019
- 2019-03-18 CN CN201910205395.1A patent/CN109933241B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103425365A (en) * | 2012-05-21 | 2013-12-04 | 乐金显示有限公司 | Display device |
| CN104750339A (en) * | 2013-12-31 | 2015-07-01 | 乐金显示有限公司 | Display device with integrated touch screen and driving method thereof |
| CN105022523A (en) * | 2014-04-28 | 2015-11-04 | 乐金显示有限公司 | Touch sensing device and driving method thereof |
| CN105739744A (en) * | 2014-12-31 | 2016-07-06 | 乐金显示有限公司 | Display device, driving method thereof and driving circuit |
| CN104777942A (en) * | 2015-05-08 | 2015-07-15 | 厦门天马微电子有限公司 | Touch control display panel, driving method and touch control display device |
Non-Patent Citations (1)
| Title |
|---|
| "触控与显示驱动集成中的关键问题研究";张晋芳;《中国博士学位论文全文数据库(信息科技辑)》;20170615(第2017年第06期);第I136-8页 * |
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