CN113160763B - Touch panel, driving method thereof and display device - Google Patents
Touch panel, driving method thereof and display device Download PDFInfo
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- CN113160763B CN113160763B CN202010076091.2A CN202010076091A CN113160763B CN 113160763 B CN113160763 B CN 113160763B CN 202010076091 A CN202010076091 A CN 202010076091A CN 113160763 B CN113160763 B CN 113160763B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
Abstract
The invention discloses a touch panel, a driving method thereof and a display device, relates to the technical field of touch display, and solves the problem that the use experience of a user is influenced because the touch and the display of an active pen are asynchronous, namely the display lags behind the touch, because the driving framework of the current display screen is scanning display line by line. The main technical scheme of the invention is as follows: the method comprises the following steps: a display module; the control module is used for acquiring touch information and calculating display data information, wherein the display data information comprises coordinate data and display data corresponding to the coordinate data; and the driving module is used for acquiring the display data information, and driving the display module to refresh the pixel unit corresponding to the coordinate data and display the information corresponding to the display data.
Description
Technical Field
The invention relates to the technical field of touch display, in particular to a touch panel, a driving method thereof and a display device.
Background
With the development of display technology and the expansion of application range, higher requirements are put on the power consumption of display devices. Memory In Pixel (MIP) display technology may enable lower refresh rates and therefore may have lower power consumption.
In the field of current active pen touch display, because a driving framework of a display screen is scanning display line by line, a system segment is required to calculate and transmit redundant display data during display, and an LCD display device needs to perform scanning start-up action line by line on a display area, so that a corresponding time difference from touch response to display is inevitably caused, namely, touch display time is prolonged, the phenomenon that touch and display are asynchronous, namely, display lags behind touch is caused, and the use experience of a user is influenced.
Disclosure of Invention
In view of this, embodiments of the present invention provide a touch panel, a driving method thereof, and a display device, and mainly aim to solve the problem that the user experience is affected because the touch and the display of an active pen are asynchronous, i.e., the display lags behind the touch, because the current driving architecture of a display screen is a progressive scanning display. In order to achieve the purpose, the invention mainly provides the following technical scheme:
in one aspect, an embodiment of the present invention provides a touch panel, including: a display module;
the control module is used for acquiring touch information and calculating display data information, wherein the display data information comprises coordinate data and display data corresponding to the coordinate data;
and the driving module is used for acquiring the display data information, and driving the display module to refresh the pixel unit corresponding to the coordinate data and display the information corresponding to the display data.
Optionally, the driving module includes a first gating module and a second gating module;
the first gating module comprises a data caching module and a first gating switch, the second gating module comprises a second gating switch, the first gating switch is arranged corresponding to a signal line of the signal output circuit, and the second gating switch is arranged corresponding to each scanning line of the scanning circuit;
the data buffer module is used for storing the display data, the coordinate data comprises first vector coordinate data and second vector coordinate data, the first gating switch is used for generating a first vector gating signal according to the first vector coordinate data so as to charge the pixel unit corresponding to the first vector coordinate data, and the second gating switch is used for generating a second vector gating signal according to the second vector coordinate data so as to control the pixel unit corresponding to the second vector coordinate data to be started.
Optionally, the driving module further includes a data conversion module, and the data conversion module is configured to convert the display data into a data voltage and output the data voltage to the pixel unit corresponding to the coordinate data.
Optionally, the data buffer module includes a first-stage latch and a second-stage latch, where the second-stage latch is disposed corresponding to each row of the pixel units in the first direction, and the first-stage latch is configured to latch the display data and latch the display data into each second-stage latch;
and the first direction is a direction corresponding to the first vector coordinate data.
Optionally, a first transmission gate is disposed between the first-stage latch and the second-stage latch.
Optionally, a second transmission gate is correspondingly disposed at an output end of each second-stage latch, and each second transmission gate is connected to the corresponding first gating switch, so that the first direction gating signal gates the second transmission gate corresponding to the first direction coordinate data.
Optionally, the driving module further comprises a first directional latch and a second directional latch;
the first vector latch is used for storing the first vector coordinate data and is connected with the input end of the first gating switch, and the second vector latch is used for storing the second vector coordinate data and is connected with the input end of the second gating switch.
Optionally, the pixel unit includes a plurality of sub-pixel units, the display data is set corresponding to each of the sub-pixel units, and the first-stage latch and the second-stage latch are set corresponding to each of the display data.
In another aspect, an embodiment of the present invention provides a method for driving a touch panel, where the method includes: acquiring touch information and calculating display data information, wherein the data information comprises coordinate data and display data corresponding to the coordinate data;
and acquiring the display data information, and driving a display module to display the display data with a pixel unit corresponding to the coordinate data.
Optionally, the obtaining the display data information and driving a display module to display the display data with a pixel unit corresponding to the coordinate data further includes: the data buffer module of the first gating module latches the display data through the primary latches and latches the display data into each secondary latch;
the first gating signal generated by the first gating switch gates a second transmission gate of the secondary latch corresponding to the first vector coordinate data, and the data conversion module converts the display data into data voltage so as to charge the pixel unit corresponding to the first vector coordinate data;
the second direction gating signal generated by the second gating switch gates the pixel units in the corresponding row to control the pixel units corresponding to the second direction coordinate data to be started;
and displaying information corresponding to the display data by the pixel unit corresponding to the coordinate data.
In another aspect, an embodiment of the present invention provides a display device, including: the touch panel is provided.
According to the touch panel, the driving method and the display device provided by the embodiment of the invention, the control module of the touch panel can acquire the touch information of each point when the active pen touches the touch panel, the touch information comprises coordinate data and display data, the driving module can drive the pixel unit at the position corresponding to the coordinate data to display the information corresponding to the display data, and only the pixel unit at the coordinate position is refreshed, so that the single-point data refreshing display of the pixel unit of the touch panel is realized, the redundant display data transmission required by the conventional line-by-line refreshing and the line-by-line scanning starting action of the display device are avoided, the response speed of a display device system can be improved, the touch response time is shortened, the user experience is improved, and the low-power consumption display can be realized by matching with the MIP display mode.
Drawings
Fig. 1 is a schematic structural diagram of a touch panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first gating module of a touch panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a second gating module of a touch panel according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating data information displayed on a touch panel according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a driving method of a touch panel according to an embodiment of the invention;
fig. 6 is a flowchart illustrating another driving method of a touch panel according to an embodiment of the invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the touch panel, the driving method thereof, and the display device according to the present invention with reference to the accompanying drawings and the preferred embodiments will be made in detail as follows.
The touch screen can be operated by using a finger, and can also be operated by using a touch pen. The touch pen comprises an active pen and a passive pen, wherein the active pen can transmit a driving signal to change an electric field at a touch point so as to change electrode capacitance at the touch point, a control chip of the touch screen can determine the position of the touch point by detecting the change of the electrode capacitance, the active pen is a mainstream product, and more touch screens, such as notebook computers, tablet computers and other electronic equipment with touch screens, are equipped with the active pen. However, the driving architecture of the current display screen is scanning display line by line, and the lengthy display data needs to be calculated and transmitted by the system segment during display, so that a corresponding time difference from touch response to display is inevitably caused, that is, the touch display time is prolonged, the phenomenon that the touch of the active pen and the display of the response are asynchronous, that is, the display lags behind the touch is caused, and the use experience of a user is influenced.
Example one
As shown in fig. 1 to 4, a touch panel according to an embodiment of the present invention includes: a display module 1;
the control module is used for acquiring touch information and calculating display data information 3, wherein the display data information 3 comprises coordinate data 31 and display data 32 corresponding to the coordinate data;
and the driving module is configured to acquire the display data information 3, and drive the pixel unit corresponding to the coordinate data 31 of the display module 1 to refresh and display information corresponding to the display data 32.
Specifically, the touch panel provided in this embodiment can be applied to the field of active pen touch, and based on a Memory In Pixel (MIP) display technology, in an MIP display mode, a fixed voltage (a certain voltage) is always applied to a Pixel unit, and a low-power display is achieved without a need of a timing refresh. The display module 1 includes a plurality of signal lines and a plurality of scanning lines, the plurality of signal lines and the plurality of scanning lines are arranged in a cross manner, pixel units are arranged in a cross region of the plurality of signal lines, an extending direction of the plurality of scanning lines may be a row direction (X direction), one ends of the plurality of scanning lines are respectively connected to output ends of the scanning circuit corresponding to respective rows, and the plurality of scanning lines are arranged to transmit signals for selecting the pixel units in a row unit, that is, scanning signals output from the scanning circuit to the respective pixel rows; the plurality of signal lines may extend in a column direction (Y direction), one ends of the plurality of signal lines are connected to output terminals of the signal output circuit corresponding to the respective columns, and are wirings for transmitting signals for driving the pixel units, that is, video signals output from the signal output circuit to the pixel units for the respective pixel columns, and the X direction and the Y direction are orthogonal to each other. When a user uses the active pen on the display panel, the active pen can send out a driving signal, and the control module can acquire touch information of each point of the active pen during touch, wherein the touch information comprises coordinate data 31 and display data 32, the coordinate data 31 is a position of a pixel unit corresponding to the touch point of the active pen, and specifically comprises a position in an X direction and a position in a Y direction, so that the coordinate data 31 can be (X, Y); the display data 32 is the display content of the pixel unit, and the display module 1 may be a display device corresponding to monochrome display or a display device corresponding to color display, and in the case of color display, one pixel unit as a unit for forming a color image may include a plurality of sub-pixel units, for example: the display data 32 may be color data displayed by the pixel unit, such as RGB data, and specifically refer to n groups of display data information 3 corresponding to n touch points as shown in fig. 4. The driving module can receive the display data information 3 calculated by the control module, for example, the Input end shown in fig. 1 inputs the display data information to the driving module, and the driving module can refresh and display single-point data of the pixel unit according to the coordinate data 31 and the display data 32, and only refreshes each touch point, which is where the active pen generates a touch action, point by point, for example: group-by-group refreshing is performed on n groups of display data information 3 corresponding to n touch points shown in fig. 4, so as to respectively refresh the display of the n touch points, and avoid the adoption of the current transmission of redundant display data 32 required by the row-by-row refreshing and the row-by-row scanning starting action of a display device, specifically: the driving module can drive the pixel unit at the position corresponding to the coordinate data 31 to display the information corresponding to the display data 32, and refresh only the pixel unit at the coordinate position, while the remaining pixel units are not refreshed.
According to the above list, an embodiment of the present invention provides a touch panel, in which a control module can obtain touch information of each point when an active pen touches the touch panel, where the touch information includes coordinate data and display data, a driving module can drive a pixel unit at a position corresponding to the coordinate data to display information corresponding to the display data, and only refresh the pixel unit at the coordinate position, so as to implement single-point data refresh display of the pixel unit, thereby avoiding redundant display data transmission required by current row-by-row refresh and row-by-row scanning start-up action of a display device, improving system response speed, shortening touch response time, improving user experience, and being capable of implementing low power consumption display in cooperation with an MIP display mode.
Further, referring to fig. 1, fig. 2 and fig. 3, in an implementation, the driving module includes a first gating module 20 and a second gating module 21; the first gating module 20 includes a data buffering module 202 and a first gating switch 201, the second gating module 21 includes a second gating switch 211, the first gating switch 201 is disposed corresponding to each signal line of the signal output circuit, and the second gating switch 211 is disposed corresponding to each scanning line of the scanning circuit; the data buffer module 202 is configured to store the display data 32, the first strobe switch 201 is configured to generate a first strobe signal according to the coordinate data 31, and the second strobe switch 211 is configured to generate a second strobe signal according to the coordinate data 31.
Specifically, in order to implement single-point display refresh of a pixel unit at a coordinate position by a driving module, in the technical scheme adopted by the present invention, the driving module includes a first gating module 20 and a second gating module 21, the first gating module 20 includes a data buffer module, the data buffer module 202 is used for storing the display data 32 and can transmit the display data to each pixel unit, the first gating module 20 further includes a first gating switch 201, and the second gating module 21 includes a second gating switch 211, wherein when an extending direction of a scanning line is a row direction (X direction) and an extending direction of a data line is a column direction (Y direction), the first gating switch 201 is arranged corresponding to each column signal line of a signal output circuit, the second gating switch 211 is arranged corresponding to each row scanning line of the scanning circuit, and the first gating switch 201 can gate a signal according to the coordinate data 31, the second gate switch 211 can generate a second gate signal according to the coordinate data 31, and the coordinate data 31(X, Y) includes X-direction data and Y-direction data, so that the first gate signal generated by the first gate switch 201 can be used to gate the pixel unit in the X-th column, and the signal output circuit can only provide data voltage for the pixel unit in the X-th column to charge the pixel unit in the X-th column.
Further, referring to fig. 2, in an implementation, the driving module further includes a data conversion module 22, and the data conversion module 22 is configured to convert the display data 32 into a data voltage and output the data voltage to the pixel unit corresponding to the coordinate data 31.
Specifically, in order to achieve a reliable driving effect of the driving module on the pixel unit, in the technical scheme adopted by the invention, the driving module further includes a data conversion module 22, and the data conversion module 22 can be arranged at the output end of the first gating module 20, and the data conversion module 22 can play a role in converting voltage and enhancing driving capability, and the logic voltage of the data output by the output end of the first gating module 20 has insufficient charging capability and insufficient voltage, so that the logic voltage of the data can be converted into the data voltage capable of driving liquid crystal inversion in the pixel unit through the data conversion module 22, thereby achieving the purpose of improving the driving capability of the driving module on the pixel unit.
Further, referring to fig. 2, in an implementation, the data buffer module 202 includes a first-stage latch 2021 and a second-stage latch 2022, when an extending direction of the scan line is a row direction (X direction) and an extending direction of the data line is a column direction (Y direction), the second-stage latch 2022 is disposed corresponding to each column of the pixel units, and the first-stage latch 2021 is configured to latch the display data 32 and latch the display data 32 into each second-stage latch 2022.
Specifically, in the technical solution adopted by the present invention, the data buffer module 202 includes a first-stage latch 2021 and a second-stage latch 2022, wherein the first-stage latch 2021 is used for latching the display data 32, and the second-stage latch 2022 is disposed corresponding to each column of pixel units, so that when the first-stage latch 2021 outputs the display data 32 to the second-stage latch 2022, the second-stage latch 2022 can store the same display data 32 corresponding to each column of pixel units, so that the data buffer module 202 can store the display data 32 into each column of pixel units. In the case of the display module 1 corresponding to color display, one pixel unit may include, for example: may include three sub-pixel units, a sub-pixel unit displaying Red (Red: R), a sub-pixel unit displaying Green (Green: G), and a sub-pixel unit displaying Blue (Blue: B), and the corresponding one-stage latch 2021 may include: r latch, G latch, and B latch, and correspondingly, the two-stage latch 2022 may include, for each column (1 st to nth columns) of pixel units: r1 latch-Rn latch, G1 latch-Gn latch and B1 latch-Bn latch, after the R latch, G latch and B latch of the first stage latch 2021 are full of RGB data, R latch writes R data fan into R1 latch-Rn latch, G latch writes G data fan into G1 latch-Gn latch, B latch writes B data fan into B1 latch-Bn latch, after the data are full, the next operation is executed.
Further, referring to fig. 2, in an implementation, a first transmission gate 401 is disposed between the primary latch 2021 and the secondary latch 2022.
Specifically, in order to improve the storage and output efficiency of the primary latch 2021 and the secondary latch 2022, in the technical scheme adopted by the present invention, a first transmission gate 401 may be disposed between the primary latch 2021 and the secondary latch 2022 for controlling data transmission between the primary latch 2021 and the secondary latch 2022, the first transmission gate 401 is turned off after the data of the primary latch 2021 is fully stored, the data may be fanned into the secondary latch 2022, and after the data is sent to the secondary latch 2022, the first transmission gate 401 is turned off, and the primary latch 2021 may continue to latch the display data 32 at the next coordinate point touched by the active pen, so that the primary latch 2021 and the secondary latch 2022 perform the data storage process simultaneously without mutual interference.
Further, referring to fig. 2, in a specific implementation, a second transmission gate 402 is correspondingly disposed at an output end of each secondary latch 2022, and each second transmission gate 402 is correspondingly connected with the first gating switch 201, so that the first gating signal gates the second transmission gates 402 of the corresponding column and controls the pixel units of the corresponding column to be turned on.
Specifically, in the technical solution adopted by the present invention, the output end of the secondary latch 2022 is correspondingly provided with the second transfer gate 402, the first gate switch 201 can control the second transfer gate 402 to be turned on and off, the second gate switch 211 can generate a first direction gate signal according to the coordinate data 31, for example, according to the coordinate data 31(X, Y), the first direction gate signal can gate the second transfer gate 402 of the X-th column to turn on the second transfer gate 402 to transfer data to the pixel units of the X-th column, and can enable the signal output circuit to transfer signals for driving the pixel units of the X-th column to control the pixel units of the X-th column to turn on, so that the pixel units of the X-th column are turned on and receive corresponding display data 32. After the first gating module 20 completes the gating process, the second gating module 21 gates, and the second gating switch 211 can gate the pixel units in the Y-th row to charge the pixel units in the Y-th row of the scanning circuit, at this time, the pixel units corresponding to the coordinates (X, Y) can be turned on and display the information corresponding to the display data 32.
Further, referring to fig. 2, fig. 3 and fig. 4, in an implementation, the driving module further includes a first directional latch 203 and a second directional latch 212; the coordinate data 31 includes first vector coordinate data 311 and second vector coordinate data 312, the first vector latch 203 is used for storing the first vector coordinate data 311 and is connected to the input terminal of the first gating switch 201, and the second vector latch 212 is used for storing the second vector coordinate data 312 and is connected to the input terminal of the second gating switch 211.
Specifically, in addition to the first-stage latch 2021 and the second-stage latch 2022 included in the data buffer module 202, in the technical solution adopted by the present invention, the driving module may further include a coordinate data latch, specifically, a first vector latch 203 and a second vector latch 212, such as coordinate data 31(X, Y), where the first vector latch 203 and the second vector latch 212 are respectively used for latching coordinate data 31 corresponding to the X direction and the Y direction, so that the first vector coordinate data 311 may be X-direction coordinate data, and the second vector coordinate data 312 may be Y-direction coordinate data; further, the output terminal of the first vector latch 203 should be connected to the input terminal of the first strobe switch 201, so that the first strobe switch 201 generates the first vector strobe signal according to the first vector coordinate data 311 (i.e. the X-direction coordinate data), i.e. the first vector strobe signal may be the X-direction strobe signal, and the output terminal of the second vector latch 212 is connected to the input terminal of the second strobe switch 211, so that the second strobe switch 211 generates the second vector strobe signal according to the second vector coordinate data 312 (i.e. the Y-direction coordinate data), i.e. the second vector strobe signal may be the Y-direction strobe signal. The first gate switch 201 is provided corresponding to each signal line of the signal output circuit to gate the X-th column with the first gate signal (i.e., the X-direction gate signal) and charge the pixel cells of the X-th column with the signal output circuit, and the second gate switch 211 is provided corresponding to each scanning line of the scanning circuit to gate the Y-th row with the second gate signal (i.e., the Y-direction gate signal) and charge the pixel cells of the Y-th row with the scanning circuit. Further, as shown in fig. 2 and fig. 3, a third transmission gate 403 may be further disposed between the output terminal of the first vector latch 203 and the input terminal of the first gating switch 201, and a fourth transmission gate 404 may be disposed between the output terminal of the second vector latch 212 and the input terminal of the second gating switch 211, where the third transmission gate 403 and the fourth transmission gate 404 are respectively used for controlling the outputs of the output terminals of the first vector latch 203 and the second vector latch 212.
Further, referring to fig. 2, in an implementation, the pixel unit includes a plurality of sub-pixel units, the display data 32 is disposed corresponding to each of the sub-pixel units, and the primary latch 2021 and the secondary latch 2022 are disposed corresponding to each of the display data 32.
Specifically, the display module 1 may be a display device corresponding to monochrome display, or a display device corresponding to color display, and in the technical solution adopted by the present invention, the display module 1 corresponds to a display device for color display, and the pixel unit includes a plurality of sub-pixel units, for example: the display module may include three sub-pixel units, i.e., a sub-pixel unit for displaying Red (Red: R), a sub-pixel unit for displaying Green (Green: G), and a sub-pixel unit for displaying Blue (Blue: B), and the sub-pixel unit for displaying R, the sub-pixel unit for displaying G, and the sub-pixel unit for displaying B are arranged in the X direction, i.e., in the row direction of the display module 1, but the pixel unit in this embodiment is not limited to the pixel formed by combining the sub-pixel units of the three primary colors of RGB, and may be formed by adding one or more sub-pixels to the combination of the sub-pixel units of the three primary colors of RGB to form a pixel unit together, i.e., the effect of expanding the color range or improving the display luminance can be achieved. Taking the pixel unit including the sub-pixel units of three primary colors of RGB as an example, the corresponding display data 32 should include R data, G data, and B data, and the primary latch 2021 and the secondary latch 2022 correspond to the display data 32, which means that the primary latch 2021 and the secondary latch 2022 individually set latches for latching data according to the data types included in the display data 32, for example: the primary latch 2021 may include an R latch, a G latch, and a B latch.
Example two
As shown in fig. 5 to fig. 6, a second embodiment of the present invention provides a driving method of a touch panel, including: s1: acquiring touch information and calculating display data information 3, wherein the data information comprises coordinate data 31 and display data 32 corresponding to the coordinate data;
s2: and acquiring the display data information 3, and driving the display module 1 to display the display data 32 by using the pixel unit corresponding to the coordinate data 31.
Specifically, when the active pen touches the touch panel to perform continuous touch operation, the active pen may emit a driving signal, and the control module of the touch panel may obtain touch information of each touch point, where the touch information includes coordinate data 31 and display data 32, where the coordinate data 31 is a position of a pixel unit corresponding to the touch point of the active pen, and the display data 32 may be color data, such as RGB data, displayed by the pixel unit; the driving module can receive the display data information 3 calculated by the control module, and can refresh and display single-point data of the pixel unit according to the coordinate data 31 and the display data 32, and only refresh each touch point generating a touch action of the active pen point by point, so that transmission of redundant display data 32 required by the current refresh line by line and a line-by-line scanning starting action of the display device are avoided, specifically: the driving module can drive the pixel unit at the position corresponding to the coordinate data 31 to display the information corresponding to the display data 32, only the pixel unit at the coordinate position is refreshed, and the rest pixel units are not refreshed, so that the touch response time can be shortened.
According to the above list, the embodiment of the present invention provides a driving method for a touch panel, where touch information of each point when an active pen touches the touch panel is obtained, where the touch information includes coordinate data and display data, a driving module can drive a pixel unit at a position corresponding to the coordinate data to display information corresponding to the display data, and only refresh the pixel unit at the coordinate position, so as to implement single-point data refresh display of the pixel unit, and avoid redundant display data transmission and a line-by-line scanning start action of a display device, which are required by current line-by-line refresh, thereby improving system response speed, shortening touch response time, improving user experience, and being capable of implementing low power consumption display in cooperation with an MIP display mode.
Further, referring to fig. 6, in an implementation, the above S2: acquiring the display data information 3, and driving the display module 1 and the pixel unit corresponding to the coordinate data 31 to display the display data 32, specifically including:
s201: the data buffer module 202 of the first gating module 20 latches the display data 32 through the first-level latches 2021 and latches the display data 32 into each second-level latch 2022;
specifically, the driving module includes a first gating module 20 and a second gating module 21, where the first gating module 20 includes a data buffer module 202 and a first gating switch 201, the data buffer module 202 is configured to store the display data 32, and further, when the extending direction of the scan line is a row direction (X direction) and the extending direction of the data line is a column direction (Y direction), the data buffer module 202 includes a first-level latch 2021 and a second-level latch 2022, the first-level latch 2021 is configured to latch the display data 32, and the second-level latch 2022 is arranged corresponding to each column of pixel units, so that when the first-level latch 2021 outputs the display data 32 to the second-level latch 2022, the second-level latch 2022 can store the same display data 32 corresponding to each column of pixel units.
S202: the first vector strobe signal generated by the first strobe switch 201 strobes the second transfer gate 402 of the secondary latch 2022 corresponding to the first vector coordinate data, and the data conversion module 22 converts the display data 32 into a data voltage to charge the pixel unit corresponding to the first vector coordinate data 311;
specifically, the secondary latch 2022 is disposed corresponding to each column of pixel units, and the output end of each secondary latch 2022 is disposed corresponding to the second transmission gate 402, the first gating switch 201 can control the second transmission gate 402 to be turned on and off, the second gating switch 211 can generate a first gate signal according to the coordinate data 31, for example, according to the coordinate data 31(X, Y), the first gate signal can gate the second transmission gate 402 in the X-th column on one hand, the data conversion module 22 can convert the logic voltage of the data into a data voltage capable of driving liquid crystal inversion in the pixel unit, and provide the data voltage to the pixel unit in the X-th column, so that the pixel unit in the X-th column is charged and receives the corresponding display data 32.
S203: the second direction gating signal generated by the second gating switch 211 gates the pixel unit corresponding to the second direction coordinate data to control the pixel unit corresponding to the second direction coordinate data to be turned on;
specifically, after the first gating module 20 completes the gating process, the second gating module 21 gates, and the second gating switch 211 can gate the pixel units in the Y-th row, so that the scanning circuit controls the pixel units in the Y-th row to be turned on.
S204: the pixel unit corresponding to the coordinate data 31 displays information corresponding to the display data 32.
Specifically, after the first gating module 20 and the second gating module 21 complete the data gating, the pixel unit corresponding to the coordinate data 31 may start and display the information corresponding to the display data 32.
EXAMPLE III
An embodiment of the invention provides a display device, which includes the touch panel.
Specifically, the display device may be an electronic device with a touch panel, such as a notebook computer or a tablet computer, and may be used in combination with an active pen.
According to the above list, the embodiment of the present invention provides a display device, a control module of a touch panel can obtain touch information of each point when an active pen touches the touch panel, where the touch information includes coordinate data 31 and display data, a driving module of the touch panel can drive a pixel unit at a position corresponding to the coordinate data 31 to display information corresponding to the display data, and only refresh the pixel unit at the coordinate position, so as to implement single-point data refresh display of the pixel unit, avoid redundant display data transmission and a line-by-line scanning start action of a display device, which are required by current line-by-line refresh, improve a system response speed, shorten a touch response time, improve user experience, and implement low-power consumption display in cooperation with an MIP display mode.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention 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 invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A touch panel, comprising:
a display module;
the control module is used for acquiring touch information and calculating display data information, wherein the display data information comprises coordinate data and display data corresponding to the coordinate data;
the driving module is used for acquiring the display data information, and driving the display module to refresh the pixel unit corresponding to the coordinate data and display the information corresponding to the display data;
the driving module comprises a first gating module and a second gating module;
the first gating module comprises a data caching module and a first gating switch, the second gating module comprises a second gating switch, the first gating switch is arranged corresponding to each signal line of the signal output circuit, and the second gating switch is arranged corresponding to each scanning line of the scanning circuit;
the data buffer module is used for storing the display data, the coordinate data comprises first vector coordinate data and second vector coordinate data, the first gating switch is used for generating a first vector gating signal according to the first vector coordinate data so as to charge the pixel unit corresponding to the first vector coordinate data, and the second gating switch is used for generating a second vector gating signal according to the second vector coordinate data so as to control the pixel unit corresponding to the second vector coordinate data to be started.
2. The touch panel of claim 1,
the driving module further comprises a data conversion module, and the data conversion module is used for converting the display data into data voltages and outputting the data voltages to the pixel units corresponding to the coordinate data.
3. The touch panel of claim 1,
the data cache module comprises a first-stage latch and a second-stage latch, the second-stage latch is arranged corresponding to each row of pixel units in the first direction, and the first-stage latch is used for latching the display data and latching the display data into each second-stage latch;
and the first direction is a direction corresponding to the first vector coordinate data.
4. The touch panel of claim 3,
and a first transmission gate is arranged between the first-stage latch and the second-stage latch.
5. The touch panel according to claim 4, further comprising:
and the output end of each secondary latch is correspondingly provided with a second transmission gate, and each second transmission gate is connected with the corresponding first gating switch so that the first gating signal gates the second transmission gate corresponding to the first gating coordinate data.
6. The touch panel of claim 1,
the driving module further comprises a first directional latch and a second directional latch;
the first vector latch is used for storing the first vector coordinate data and is connected with the input end of the first gating switch, and the second vector latch is used for storing the second vector coordinate data and is connected with the input end of the second gating switch.
7. The touch panel of claim 3,
the pixel unit comprises a plurality of sub-pixel units, the display data is arranged corresponding to each sub-pixel unit, and the primary latch and the secondary latch are arranged corresponding to each display data.
8. A driving method of a touch panel, applied to the touch panel as claimed in any one of claims 1 to 7, comprising:
acquiring touch information and calculating display data information, wherein the data information comprises coordinate data and display data corresponding to the coordinate data;
and acquiring the display data information, and driving a display module to display the display data by the pixel unit corresponding to the coordinate data.
9. The driving method of a touch panel according to claim 8,
the obtaining of the display data information and the driving of the display module and the pixel unit corresponding to the coordinate data to display the display data further include:
the data buffer module of the first gating module latches the display data through the primary latches and latches the display data into each secondary latch;
a first vector gating signal generated by the first gating switch gates a second transmission gate of the secondary latch corresponding to first vector coordinate data, and the data conversion module converts the display data into data voltage so as to charge the pixel unit corresponding to the first vector coordinate data;
a second direction gating signal generated by a second gating switch gates the pixel unit corresponding to the second direction coordinate data to control the pixel unit corresponding to the second direction coordinate data to be started;
and displaying information corresponding to the display data by the pixel unit corresponding to the coordinate data.
10. A display device, comprising:
touch panel according to any one of claims 1-7.
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