CN109509453B - Display panel driving method, device and readable storage medium - Google Patents
Display panel driving method, device and readable storage medium Download PDFInfo
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- CN109509453B CN109509453B CN201811588262.9A CN201811588262A CN109509453B CN 109509453 B CN109509453 B CN 109509453B CN 201811588262 A CN201811588262 A CN 201811588262A CN 109509453 B CN109509453 B CN 109509453B
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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
- G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
Abstract
The application discloses a display panel driving method, which comprises the following steps: acquiring a grid driving signal; determining a target pixel point according to the grid driving signal; determining a corresponding compensation signal according to the signal transmission distance of the source driving signal of the target pixel point; and compensating the source electrode driving signal of the target pixel point according to the compensation signal. The application also discloses a display panel driving device and a readable storage medium. The color cast phenomenon of the display picture can be avoided.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a display panel driving control method, a display panel driving apparatus, and a readable storage medium.
Background
In the pixel architecture of the current lcd, the routing required by the gate driver and the source driver is laid out in the fanout region (fan-out region). Since the transmission distances of the source driving signals transmitted from the source driver to the thin film transistors on the pixel points at different positions of the fanout area are different, the source driving signals are subjected to different RC delays. The longer the transmission distance is, the more easily the source driving signal obtained by the remote pixel point is deformed, which results in the occurrence of the color cast phenomenon of the display picture.
The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.
Disclosure of Invention
The present disclosure is directed to a method for driving a display panel, which is used to avoid color shift of a display screen.
In order to achieve the above object, the present application provides a display panel driving method, including:
acquiring a grid driving signal;
determining a target pixel point according to the grid driving signal;
determining a corresponding compensation signal according to the signal transmission distance of the source driving signal of the target pixel point; and the number of the first and second groups,
and compensating the source electrode driving signal of the target pixel point according to the compensation signal.
Optionally, the step of determining a corresponding compensation signal according to the signal transmission distance of the source driving signal of the target pixel point includes:
determining the signal transmission distance according to the position of the target pixel point relative to a source driver; wherein the source driver sends out the source driving signal; and the number of the first and second groups,
and determining a corresponding compensation signal according to the signal transmission distance.
Optionally, the display panel includes a driving region and a fan-out region, the source driver for emitting the source driving signal and the gate driver for emitting the gate driving signal are located in the driving region, the destination pixel point is located in the fan-out region, and the step of determining the signal transmission distance according to the location of the destination pixel point relative to the source driver includes:
determining a preset area where the target pixel point is located in the fan-out area; and the number of the first and second groups,
and determining a corresponding preset distance according to the preset area as the signal transmission distance.
Optionally, before the step of obtaining the gate driving signal, the method further includes:
acquiring the lengths of source lines and between each pixel point and the source driver in the fan-out area;
dividing the obtained length into a plurality of length intervals;
dividing the fan-out area into a plurality of preset areas according to the length interval.
Optionally, the step of dividing the obtained length into a plurality of length intervals includes:
acquiring a preset corresponding relation between the color cast of the pixel point and the signal transmission distance;
determining the interval range of the length interval according to the preset corresponding relation and a visual color cast identification threshold;
and dividing the acquired length into a plurality of length intervals according to the interval range.
Optionally, the step of determining a corresponding compensation signal according to the signal transmission distance of the source driving signal of the target pixel point includes:
acquiring the length of a source line between the target pixel point and the source driver;
determining the length as the signal transmission distance; and the number of the first and second groups,
and determining a corresponding compensation signal according to the signal transmission distance.
Optionally, the step of compensating the source driving signal of the target pixel point according to the compensation signal includes:
determining corresponding amplification power according to the compensation signal; and the number of the first and second groups,
and amplifying the source electrode driving signal of the target pixel point according to the amplification power.
Optionally, the larger the signal transmission distance is, the larger the corresponding amplification power is.
Further, to achieve the above object, the present application also provides a display panel driving device including:
a signal receiving module configured to obtain a gate driving signal;
the first analysis module is used for determining a target pixel point on the display panel according to the grid driving signal;
the second analysis module is used for determining a corresponding compensation signal according to the signal transmission distance of the source electrode driving signal of the target pixel point; and the number of the first and second groups,
and the compensation module is used for compensating the source electrode driving signal of the target pixel point according to the compensation signal.
In addition, to achieve the above object, the present application also provides a readable storage medium having a display panel driver stored thereon, where the display panel driver, when executed by a processor, implements the steps of the display panel driving method as follows:
acquiring a grid driving signal;
determining a target pixel point on a display panel according to the grid driving signal;
determining a corresponding compensation signal according to the signal transmission distance of the source driving signal of the target pixel point; and the number of the first and second groups,
and compensating the source electrode driving signal of the target pixel point according to the compensation signal.
According to the display panel driving method provided by the embodiment of the application, the target pixel point is determined according to the gate driving signal, the source driving signal of the target pixel point is compensated for the target pixel point with different signal transmission distances according to the corresponding compensation signal, so that the source driving signal transmitted to the position cannot cause signal deformation due to an RC delay phenomenon generated by the transmission distance, the pixel voltages of the pixel points at different positions on the display panel are consistent, and the color cast phenomenon of a display picture is avoided.
Drawings
FIG. 1 is a schematic diagram of a pixel distribution structure of a display panel according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a hardware structure of a display panel driving control device in an embodiment of the present application;
FIG. 3 is a flowchart illustrating a display panel driving method according to an embodiment of the present disclosure;
FIG. 4 is a schematic flow chart illustrating a display panel driving method according to another embodiment of the present disclosure;
fig. 5 is a flowchart illustrating a display panel driving method according to another embodiment of the present disclosure.
The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The main solution of the embodiment of the application is as follows: acquiring a grid driving signal; determining a target pixel point according to the grid driving signal; determining a corresponding compensation signal according to the signal transmission distance of the source driving signal of the target pixel point; and compensating the source electrode driving signal of the target pixel point according to the compensation signal.
Because the transmission distances of the source driving signals received by the pixel points at different positions are different at present, the longer the transmission distance is, the longer the RC delay is, the source driving signal obtained by the pixel point at the far end is deformed, and the color cast phenomenon of the display image is caused. The application provides a solution, which determines a target pixel point according to a gate drive signal, compensates a source drive signal of the target pixel point according to a corresponding compensation signal for the target pixel point with different signal transmission distances, so that the source drive signal transmitted to the position cannot cause signal deformation due to an RC delay phenomenon generated by the transmission distance, thereby enabling pixel voltages of the pixel points at different positions on a display panel to be consistent, and avoiding the color cast phenomenon of a display picture.
In the embodiment of the present application, a display panel is provided, as shown in fig. 1, the display panel includes a plurality of gate lines 100, a plurality of source lines 200, a plurality of thin film transistors 300, a gate driver 400, and a source driver 500, and the gate driver 400 and the source driver 500 are connected to a processor 6001. The gate lines 100 and the source lines 200 are arranged to intersect each other, the thin film transistors 300 are arranged at intersections of the gate lines 100 and the source lines 200, gates of the thin film transistors 300 are connected to the gate driver 400 through the gate lines 100, respectively, and sources of the thin film transistors 300 are connected to the source driver 500 through the source lines 200, respectively, wherein the display panel further includes an operational amplifier (not shown), and one end of each source line 200 connected to the source driver 500 is connected to the operational amplifier (not shown).
The display panel may be a liquid crystal display panel. As shown in fig. 1, the display panel includes a driving region 10 and a fan-out region 20, a gate driver 400 and a source driver 500 are disposed in the driving region 10, a plurality of gate lines 100 are disposed in the fan-out region 20 at intervals and connected to the gate driver 400 in the driving region 10, and a plurality of source lines 200 are disposed in the fan-out region 20 at intervals and connected to the source driver 500 in the driving region 10. In the fan-out area 20, a plurality of source lines 200 are disposed orthogonal to a plurality of gate lines 100, wherein the gate lines 100 extend in a lateral direction (form rows) and the source lines 200 extend in a longitudinal direction (form columns). Defining the focus of the gate line 100 and the source line 200 as pixel points, each pixel point is provided with a thin film transistor 300, the source of each thin film transistor 300 is connected to the source driver 500 through a source line 200, and the gate of each thin film transistor 300 is connected to the gate driver 400 through a gate line 100. The gates of the tfts 300 in the same row may be connected in series to the same gate line 100. The gate driver 400 sequentially turns on the thin film transistors 300 on the display panel by transmitting a gate driving signal to the gates of the thin film transistors 300 through the gate lines 100. Specifically, each gate driving signal specifically includes a selected target pixel point and a turn-on signal of the target pixel point. The source driver 500 transmits a data voltage corresponding to a pixel point where the thin film transistor 300 is located to the source of the thin film transistor 300 through the source line 200. The control of the brightness of the pixel point is realized through the voltage difference between the data voltage and the common voltage of the common electrode of the display panel, so that the display of the image on the display panel is realized. A plurality of gate drivers 400 and/or source drivers 500 may be provided, each gate driver 400 and/or source driver 500 may be connected to a plurality of thin film transistors 300, and each gate driver 400 and/or source driver 500 controls the display of a pixel point where the thin film transistor 300 connected thereto is located.
The display panel further includes an operational amplifier (not shown), and a signal receiving terminal of each source line 200 connected to the source driver 500 is provided with the operational amplifier (not shown). The operational amplifier (not shown) can amplify the output power of the source driving signal outputted from the source driver 500 to the target pixel according to the compensation signal, and can be used to ensure that the pixel voltages of the pixels at different positions on the display panel are consistent, thereby avoiding the color cast phenomenon of the display image.
Further, the display panel may further include a display panel driving control apparatus 600, and as shown in fig. 2, the display panel driving control apparatus 600 may include: a processor 6001, such as a CPU, a memory 6002, and a communication bus 6003. The communication bus 6003 is used to realize connection communication between these components. The memory 6002 may be a high-speed RAM memory or a non-volatile memory such as a disk memory. The memory 6002 could alternatively be a storage device separate from the processor 6001.
Those skilled in the art will appreciate that the configuration of the apparatus shown in fig. 2 is not intended to be limiting of the apparatus and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 2, a display panel driver may be included in a memory 6002 which is a kind of computer storage medium. The processor may be connected with the gate driver 400 and the source driver 500, respectively. The processor 6001 may be configured to call a display panel driver stored in the memory 6002 and perform operations of the relevant steps of the display panel driving method in the following embodiments.
Referring to fig. 3, the present application provides a display panel driving method, including:
step S10, acquiring a gate driving signal;
the processor acquires the gate driving signal from the gate driver 400. The gate driving signal specifically includes a selected target pixel point and a conducting signal of the target pixel point.
Step S20, determining a target pixel point according to the grid driving signal;
and identifying the grid driving signal and determining a target pixel point in the grid driving signal. The target pixel is a pixel selected to turn on the tft 300 among all pixels of the display panel and to input a corresponding source driving signal through the source line 200.
Step S30, determining a corresponding compensation signal according to the signal transmission distance of the source driving signal of the target pixel point;
the signal transmission distance specifically refers to a required distance for transmitting the source driving signal from the source driver 500 to the target pixel connected thereto. Different pixel points distributed along the extension direction of the source line 200 correspond to different signal transmission distances. The signal transmission distance can be characterized by the following parameters: the distance between the target pixel point and the source driver 500, the length of the source line 200 between the position of the target pixel point and the source driver 500, and the like. Since the relative positions of the driving region 10 and the fan-out region 20 are fixed on the display panel, the signal transmission distance can be characterized by the following parameters when the source driver 500 includes one based on the relative positions of the driving region 10 and the fan-out region 20: the position of the target pixel point in the fan-out area 20 (for example, the coordinate of the target pixel point in the pixel point array formed by all the pixel points) or the area where the target pixel point is located on the fan-out area 20; when the source driver 500 includes a plurality of signals, the signal transmission distance can be characterized by the following parameters: the position of the target pixel point in the fan-out area 20 (e.g. the coordinates of the target pixel point in the pixel array formed by all pixel points) or the area on the fan-out area 20, and the position of the source driver 500 connected to the target pixel point in the driving area 10 or the area in the driving area 10, etc.
Different compensation signals are correspondingly arranged at the positions of different target pixel points. The compensation signal may specifically comprise an amplified voltage, an amplified power, etc. The larger the signal transmission distance of the target pixel point is, the larger the amplification voltage and/or amplification power and the like in the corresponding compensation signal are.
And step S40, compensating the source driving signal of the target pixel point according to the compensation signal.
And controlling the compensation unit connected with the source line 200 of the target pixel point to operate according to the determined compensation signal, so that the compensation unit amplifies the output power and/or the output voltage of the source driving signal to the target pixel point according to the amplification voltage and/or the amplification power in the compensation signal.
Specifically, step S40 includes:
step S41, determining the corresponding amplification power according to the compensation signal; and the number of the first and second groups,
and step S42, amplifying the source driving signal of the target pixel point according to the amplification power.
The compensation unit is specifically an operational amplifier (not shown), and a signal input terminal of each source line 200 connected to the source driver 500 is connected to the operational amplifier (not shown). The processor may send the compensation signal to an operational amplifier (not shown), where the compensation signal includes amplification power, and after the operational amplifier receives the compensation signal, extract the amplification power in the compensation signal, and amplify the output power output by the source driver 500 to the target pixel point according to the amplification power.
In this embodiment, a driving method for a display panel is provided, where a target pixel point is determined according to a gate driving signal, and a source driving signal of the target pixel point is compensated for the target pixel points with different signal transmission distances according to corresponding compensation signals, so that the source driving signal transmitted to the position is not deformed due to an RC delay phenomenon generated by the transmission distance, and thus pixel voltages of the pixel points at different positions on the display panel are consistent, and a color shift phenomenon of a display image is avoided.
Specifically, referring to fig. 4, the step of determining the corresponding compensation signal according to the signal transmission distance of the source driving signal of the target pixel point includes:
step S31, determining the signal transmission distance according to the position of the target pixel point relative to the source driver 500; wherein the source driver 500 sends the source driving signal;
specifically, the position of the target pixel point relative to the source driver 500 may be represented by establishing a preset coordinate system on the display panel, determining a first coordinate of the target pixel point on the preset coordinate system and a second coordinate of the source driver 500 on the preset coordinate system, and representing the position of the target pixel point relative to the source driver 500 according to a relationship between the first coordinate and the second coordinate. The distance between the target pixel and the source driver 500 may be calculated by the first coordinate and the second coordinate, and the signal transmission distance of the source driving signal transmitted to the target pixel may be determined by the calculated distance in combination with a routing rule (e.g., straight line routing, bent line routing, etc.) of the source line 200 connecting the source driver and the target pixel.
For convenience of calculation, the origin of the predetermined coordinate system may be located at the position of the source driver 500. When there are a plurality of source drivers 500, different predetermined coordinate systems may be correspondingly set. The distance between the target pixel and the source driver 500 is calculated after determining the coordinates by the preset coordinate system corresponding to the source driver 500 connected to the target pixel.
And step S32, determining a corresponding compensation signal according to the signal transmission distance.
In this embodiment, in order to ensure the transmission efficiency, the farther the target pixel is located relative to the source driver 500, the larger the corresponding signal transmission distance is, so that the signal transmission distance is represented by the location of the target pixel relative to the source driver 500, and a more accurate signal transmission distance can be obtained, so as to obtain a more accurate compensation signal to compensate the source driving signal of the target pixel.
Specifically, the step of determining the signal transmission distance according to the position of the target pixel point relative to the source driver 500 based on the above structure of the display panel includes:
step S311, determining a preset region where the target pixel point is located in the fan-out area 20;
the fan-out area 20 may be divided into a plurality of predetermined regions in advance according to the layout of the source lines 200, the distribution characteristics of the pixel points, the relative positions between the fan-out area 20 and the driving area 10 or the source drivers 500 in the driving area 10, and the like. As shown in fig. 1, in the fan-out area 20, the fan-out area 20 is divided into a plurality of predetermined regions, such as regions 1, 2, 3, and 4 in the drawing, along the extending direction of the source driving line. The driving region 10 may include a vertical driving region and a horizontal driving region, the gate driver 400 is specifically disposed in the horizontal driving region, and the source driver 500 is specifically disposed in the middle of the vertical driving region.
And establishing a mapping relation between each pixel point in the fan-out area 20 and a preset area, and determining the preset area of the target pixel point in the fan-out area 20 according to the mapping relation.
Step S312, determining a corresponding preset distance according to the preset area as the signal transmission distance.
The signal transmission distances between the pixel points in the different preset regions and the source driver 500 may be respectively represented by different preset distances. Different preset distances are correspondingly arranged in different preset areas. The preset distance may be determined according to the length of the source line 200 between each pixel point and the source driver 500 in the preset region, for example, the preset distance is calculated according to the length of the source line 200 between different pixel points and the source driver 500 in the preset region by using an average value, a weighted average, or the like. Different preset distances correspond to different compensation signals.
And determining a preset distance corresponding to the area as a signal transmission distance by looking up a table according to the relationship by the determined preset area, and taking a compensation signal corresponding to the determined preset distance as a compensation signal of the source electrode driving signal of the target pixel point. After the preset distance of the first area is determined, the target length can be selected as the distance difference between the preset distances corresponding to the adjacent preset areas, and correspondingly, the amplified voltage difference and/or the amplified power difference in the compensation signal corresponding to the preset distance corresponding to the adjacent preset areas can be determined according to the target length.
In this embodiment, the fan-out area 20 is divided into different preset areas, the signal transmission distance is represented by the different preset areas, and the source driving signals of the target pixels in the same area are compensated according to the same compensation signal, so that the color cast of the display picture is prevented, and the integrity of the picture display is prevented from being affected by instability when the target pixels are compensated independently.
Specifically, the preset region may be divided according to the length of the source line 200 between the pixel point and the source driver 500 in the region, and before the step of obtaining the gate driving signal, the method further includes:
step S01, obtaining the lengths of source lines and between each pixel point and the source driver in the fan-out area;
when the display panel is manufactured, the length of the source line 200 between each pixel point in the fan-out area and the source driver 500 can be measured, and the measured length is input as an input parameter. The length between each pixel point in the fan-out area and the source driver and the length of the source line can be obtained by obtaining input parameters.
In addition, hardware design parameters of the display panel from which the length of the source line 200 between each pixel point and the source driver 500 is extracted may also be acquired. Here, the hardware design parameters are the hardware modules of the display panel and the technical parameters for implementing connection coordination between the hardware modules, which are set by the designer of the display panel, and may specifically include electronic components in the display panel, the work index parameters of the electronic components themselves, the distribution positions of the electronic components, and the index parameters (such as types, wire lengths, joints, etc.) of the connection lines between the electronic components.
Step S02, dividing the obtained length into a plurality of length intervals;
specifically, the acquired length may be divided into at least two consecutive length intervals.
Step S03, dividing the fan-out area into a plurality of preset areas according to the length section.
The pixel points between the source driver 500 and the source lines 200 having the same length interval are divided into the same predetermined region. Two adjacent predetermined regions have a region boundary, and the length of the source line 200 between the pixel point and the source driver 500 on the same region boundary is equal.
Through the above manner, the preset region is divided according to the length of the source line 200 between the pixel point and the source driver 500, and the divided preset region can accurately represent the distance of the signal transmission distance of the pixel point in the region, so that the pixel point in each region can be accurately compensated by a signal.
Further, the step of dividing the acquired length into a plurality of length intervals includes:
step S021, acquiring a preset corresponding relation between the color cast and the signal transmission distance;
specifically, after all the drive signal adjustment functions in the display panel are turned off (any module is prohibited from adjusting the source drive signal), the corresponding source drive signal is determined according to the target gray scale and is defined as a reference drive signal, after the source driver sends the reference drive signal to the pixel points with different signal transmission distances, the actual gray scale of each pixel point is tested, the gray scale difference between the actual gray scale and the target gray scale of each pixel point is used as the color cast corresponding to the pixel point, and the obtained color cast corresponds to the signal transmission distance of the pixel point. By means of the method, a large amount of data are collected, and the preset corresponding relation between the color cast and the signal transmission distance can be obtained.
Step S022, determining an interval range of the length interval according to the preset corresponding relation and a visual color cast identification threshold value;
since the color cast amount is too small, the human vision cannot be recognized, and the minimum value of the color cast amount which can be recognized by the vision can be defined as the visual color cast recognition threshold value. And determining the distance amplitude of which the color cast cannot be visually recognized according to the visual color cast recognition threshold and the preset corresponding relation, and taking the distance amplitude or the length value smaller than the distance amplitude as the interval range of each length interval.
Step S023, dividing the acquired length into a plurality of length intervals according to the interval range.
And dividing the acquired length into a plurality of continuous length intervals according to the determined interval range, wherein the interval range is the difference value of the interval critical values of all the length intervals.
In this embodiment, the length interval is divided by combining the preset corresponding relationship between the color cast amount and the signal transmission distance and the visual color cast identification threshold, so that the preset region divided based on the length interval is more accurate. And based on the setting of the preset areas, the preset distance corresponding to each preset area can be determined according to the distance amplitude, and the difference value of the preset distances corresponding to the adjacent preset areas is the determined distance amplitude.
In addition, referring to fig. 5, the step of determining the corresponding compensation signal according to the signal transmission distance of the source driving signal of the target pixel point further includes:
step S33, obtaining the length of the source line 200 between the target pixel point and the source driver 500;
when the display panel is manufactured, the length of the source line 200 between each pixel point and the source driver 500 can be measured, and the measured lengths are respectively associated with the corresponding pixel points for storage. After the target pixel is determined, the length associated with the target pixel can be obtained from the memory according to the target pixel and used as the length of the source line 200 between the target pixel and the source driver 500.
In addition, hardware design parameters of the display panel from which the length of the source line 200 between the target pixel point and the source driver 500 is extracted may also be acquired.
Step S34, determining the length as the signal transmission distance;
since the source driving signal is transmitted through the source line 200, the length of the source line 200 between the target pixel point and the source driver 500 can be directly used as the signal transmission distance of the source driving signal.
And step S35, determining a corresponding compensation signal according to the signal transmission distance.
Different signal transmission distances can correspond to different compensation signals, a preset formula between the compensation signals and the signal transmission distances can be established, and the corresponding compensation signals are calculated according to the preset formula and the determined signal transmission distances. For example, y is ax, where y is a compensation signal (such as an amplified power or an amplified voltage), a is a fixed parameter, and x is a signal transmission distance (i.e., a length of the source line 200 between the target pixel point and the source driver 500).
In this embodiment, the length of the source line 200 between the target pixel point and the source driver 500 is determined as a signal transmission distance to determine a corresponding compensation signal, so that the signal transmission distance is accurately represented, the determined compensation signal is more accurate and reliable, and the color cast phenomenon of the display panel is effectively avoided.
In addition, an embodiment of the present application further provides a display panel driving apparatus, including:
a signal receiving module configured to obtain a gate driving signal;
the first analysis module is used for determining a target pixel point on the display panel according to the grid driving signal;
the second analysis module is used for determining a corresponding compensation signal according to the signal transmission distance of the source electrode driving signal of the target pixel point; and the number of the first and second groups,
and the compensation module is used for compensating the source electrode driving signal of the target pixel point according to the compensation signal.
Specifically, the compensation module is an operational amplifier and is configured to determine a corresponding amplification power according to the compensation signal; and amplifying the source electrode driving signal of the target pixel point according to the amplification power.
Specifically, the second analysis module includes a first distance analysis unit and a first signal determination unit, and the distance analysis unit is configured to determine the signal transmission distance according to a position of the target pixel point relative to the source driver; wherein the source driver sends out the source driving signal;
and the signal determining unit is arranged for determining the corresponding compensation signal according to the signal transmission distance.
The display panel comprises a driving area and a fan-out area, wherein a source driver for sending the source driving signal and a gate driver for sending the gate driving signal are located in the driving area, the target pixel point is located in the fan-out area, and the distance analysis unit is specifically arranged to determine the area where the target pixel point is located in the fan-out area; and determining the signal transmission distance according to the region.
In addition, the second analysis module may further include a line length determination unit, a second distance analysis unit, and a second signal determination unit.
The line length determination unit is configured to acquire the length of a source line between the target pixel point and the source driver;
the second distance analysis unit is configured to determine the length as the signal transmission distance; and the number of the first and second groups,
the second signal determination unit is configured to determine a corresponding compensation signal according to the signal transmission distance.
In addition, an embodiment of the present application further provides a readable storage medium, where a display panel driver is stored on the readable storage medium, and when executed by a processor, the display panel driver implements the following steps of the display panel driving method:
acquiring a grid driving signal;
determining a target pixel point on a display panel according to the grid driving signal;
determining a corresponding compensation signal according to the signal transmission distance of the source driving signal of the target pixel point; and the number of the first and second groups,
and compensating the source electrode driving signal of the target pixel point according to the compensation signal.
The specific implementation of the readable storage medium of the present application is substantially the same as the embodiments of the display panel driving method, and is not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the embodiments described above can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is an alternative embodiment. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.
The above description is only an alternative embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (8)
1. A display panel driving method, comprising:
acquiring a grid driving signal;
determining a target pixel point according to the grid driving signal;
determining a corresponding compensation signal according to the signal transmission distance of the source driving signal of the target pixel point; and the number of the first and second groups,
compensating the source electrode driving signal of the target pixel point according to the compensation signal;
the display panel driving method further comprises the steps of dividing the fan-out area into different preset areas, representing the signal transmission distance through the different preset areas, and compensating source driving signals of target pixel points in the same preset area according to the same compensation signal;
before the step of acquiring the gate driving signal, the method further comprises:
acquiring the length of a source line between each pixel point and a source driver in the fan-out area;
dividing the obtained length into a plurality of length intervals;
dividing the fan-out area into a plurality of preset areas according to the length interval;
the step of dividing the acquired length into a plurality of length intervals comprises:
acquiring a preset corresponding relation between the color cast of the pixel point and the signal transmission distance;
determining the interval range of the length interval according to the preset corresponding relation and a visual color cast identification threshold; and the number of the first and second groups,
and dividing the acquired length into a plurality of length intervals according to the interval range.
2. The method for driving a display panel according to claim 1, wherein the step of determining the corresponding compensation signal according to the signal transmission distance of the source driving signal of the target pixel point comprises:
determining the signal transmission distance according to the position of the target pixel point relative to a source driver; wherein the source driver sends out the source driving signal; and the number of the first and second groups,
and determining a corresponding compensation signal according to the signal transmission distance.
3. The display panel driving method of claim 2, wherein the display panel includes a driving area and a fan-out area, wherein a source driver that emits the source driving signal and a gate driver that emits the gate driving signal are located in the driving area, wherein the destination pixel point is located in the fan-out area, and wherein the determining the signal transmission distance according to the location of the destination pixel point relative to the source driver comprises:
determining a preset area where the target pixel point is located in the fan-out area; and the number of the first and second groups,
and determining a corresponding preset distance according to the preset area as the signal transmission distance.
4. The method for driving a display panel according to claim 1, wherein the step of determining the corresponding compensation signal according to the signal transmission distance of the source driving signal of the target pixel point comprises:
acquiring the length of a source line between the target pixel point and the source driver;
determining the length as the signal transmission distance; and the number of the first and second groups,
and determining a corresponding compensation signal according to the signal transmission distance.
5. The display panel driving method according to any one of claims 1 to 4, wherein the step of compensating the source driving signal of the target pixel point according to the compensation signal comprises:
determining corresponding amplification power according to the compensation signal; and the number of the first and second groups,
and amplifying the source electrode driving signal of the target pixel point according to the amplification power.
6. The display panel driving method according to claim 5, wherein the larger the signal transmission distance, the larger the corresponding amplification power.
7. A display panel driving apparatus, characterized in that the display panel driving apparatus is controlled in accordance with the steps of the display panel driving method according to any one of claims 1 to 6, comprising:
a signal receiving module configured to obtain a gate driving signal;
the first analysis module is used for determining a target pixel point on the display panel according to the grid driving signal;
the second analysis module is used for determining a corresponding compensation signal according to the signal transmission distance of the source electrode driving signal of the target pixel point; and the number of the first and second groups,
and the compensation module is used for compensating the source electrode driving signal of the target pixel point according to the compensation signal.
8. A readable storage medium having a display panel driver stored thereon, the display panel driver, when executed by a processor, implementing the steps of the display panel driving method of any one of claims 1 to 6:
acquiring a grid driving signal;
determining a target pixel point on a display panel according to the grid driving signal;
determining a corresponding compensation signal according to the signal transmission distance of the source driving signal of the target pixel point; and the number of the first and second groups,
and compensating the source electrode driving signal of the target pixel point according to the compensation signal.
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| CN201811588262.9A CN109509453B (en) | 2018-12-24 | 2018-12-24 | Display panel driving method, device and readable storage medium |
| PCT/CN2019/123605 WO2020134963A1 (en) | 2018-12-24 | 2019-12-06 | Display panel driving method and device, and readable storage medium |
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| CN109509453B (en) * | 2018-12-24 | 2021-05-14 | 惠科股份有限公司 | Display panel driving method, device and readable storage medium |
| CN111816120A (en) * | 2020-07-01 | 2020-10-23 | 深圳市华星光电半导体显示技术有限公司 | Display panel brightness compensation method and display panel |
| TWI767286B (en) * | 2020-07-29 | 2022-06-11 | 大陸商北京集創北方科技股份有限公司 | Row driving method of display panel, display panel and information processing device using the same |
| CN112951172A (en) * | 2021-02-04 | 2021-06-11 | 重庆先进光电显示技术研究院 | Liquid crystal display device and charging control method |
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