CN111429854B

CN111429854B - Method and device for driving display panel to display, display screen and terminal

Info

Publication number: CN111429854B
Application number: CN201910024168.9A
Authority: CN
Inventors: 刘阳
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2019-01-10
Filing date: 2019-01-10
Publication date: 2021-11-23
Anticipated expiration: 2039-01-10
Also published as: CN111429854A

Abstract

The disclosure provides a method and a device for driving a display panel to display, a display screen and a terminal. The method comprises the following steps: acquiring initial driving data of a display panel, the initial driving data comprising: the method comprises the steps of obtaining initial pixel data of an R sub-pixel, initial pixel data of a G sub-pixel and initial pixel data of a B sub-pixel, obtaining common pixel data among the initial pixel data of the R sub-pixel, the initial pixel data of the G sub-pixel and the initial pixel data of the B sub-pixel, and determining target driving data according to the common pixel data and the initial driving data, wherein the target driving data comprises: and driving the display panel to display according to the target drive data by the target pixel data of the R sub-pixel, the target pixel data of the G sub-pixel, the target pixel data of the B sub-pixel and the target pixel data of the W sub-pixel, and driving the display panel provided with four sub-pixels to display according to the pixel data of the R sub-pixel, the pixel data of the G sub-pixel and the pixel data of the B sub-pixel.

Description

Method and device for driving display panel to display, display screen and terminal

Technical Field

The present disclosure relates to the field of computer communication technologies, and in particular, to a method and an apparatus for driving a display panel to display, a display screen, and a terminal.

Background

Liquid crystal display screens are widely used because of their advantages of low power consumption, small size, low radiation, etc. The liquid crystal display screen comprises a liquid crystal display panel and a driving chip, and when the liquid crystal display screen is driven to display, the driving chip can input driving data to the liquid crystal display panel so as to control liquid crystal particles in the liquid crystal display panel to deflect and realize image display.

With the development of liquid crystal display technology, on the basis of a traditional liquid crystal display panel provided with R sub-pixels, G sub-pixels and B sub-pixels, W sub-pixels are additionally arranged to obtain a four-sub-pixel type liquid crystal display panel. Compared with the traditional liquid crystal display panel, the four-sub-pixel type liquid crystal display panel has the advantages of low color resistance coverage rate, high light transmittance and the like.

However, the driving data of the conventional liquid crystal display panel only includes the driving data of the R sub-pixel, the driving data of the G sub-pixel, and the driving data of the B sub-pixel, and the driving data cannot be directly used to drive the four-pixel type liquid crystal display panel to display.

Disclosure of Invention

In view of the above, the present disclosure provides a method for driving a display panel to display, which determines target driving data including target pixel data of four sub-pixels by obtaining and using initial driving data and common pixel data of the display panel, and implements a four-sub-pixel type liquid crystal display panel display using the target driving data.

According to a first aspect of the embodiments of the present disclosure, there is provided a method of driving a display panel provided with R, G, B, and W sub-pixels to display, the method including:

acquiring initial driving data of the display panel, wherein the initial driving data comprises: initial pixel data of the R sub-pixel, initial pixel data of the G sub-pixel, and initial pixel data of the B sub-pixel;

acquiring common pixel data among the initial pixel data of the R sub-pixel, the initial pixel data of the G sub-pixel and the initial pixel data of the B sub-pixel;

determining target drive data according to the common pixel data and the initial drive data, the target drive data comprising: target pixel data of the R sub-pixel, target pixel data of the G sub-pixel, target pixel data of the B sub-pixel, and target pixel data of the W sub-pixel;

and driving the display panel to display according to the target driving data.

Optionally, the common pixel data is common pixel data or convention pixel data.

Optionally, the determining target driving data according to the common pixel data and the initial driving data includes:

subtracting the public pixel data from the initial pixel data of the R sub-pixel to obtain target pixel data of the R sub-pixel;

subtracting the public pixel data from the initial pixel data of the G sub-pixel to obtain target pixel data of the G sub-pixel;

subtracting the public pixel data from the initial pixel data of the B sub-pixel to obtain target pixel data of the B sub-pixel;

and taking the common pixel data as target pixel data of the W sub-pixel.

Optionally, before the determining target drive data from the common pixel data and the initial drive data, the method further comprises:

acquiring a light transmittance relation between a first picture and a second picture, wherein the first picture is a display picture when the R sub-pixel, the G sub-pixel and the B sub-pixel correspond to maximum pixel data and the W sub-pixel corresponds to minimum pixel data, and the second picture is a display picture when the R sub-pixel, the G sub-pixel and the B sub-pixel correspond to minimum pixel data and the W sub-pixel corresponds to maximum pixel data;

determining target drive data according to the common pixel data and the initial drive data comprises:

and converting the initial driving data according to the public pixel data and the light transmittance relation to obtain the target driving data.

Optionally, the obtaining the transmittance relationship between the first picture and the second picture includes:

dividing the light transmittance of the first picture by the light transmittance of the second picture to obtain the light transmittance ratio;

the converting the initial driving data according to the common pixel data and the light transmittance relation to obtain the target driving data includes:

calculating a product of a difference value between the initial pixel data and the common pixel data of each sub-pixel and the light transmittance ratio to obtain target pixel data of each sub-pixel, wherein each sub-pixel comprises: the R sub-pixel, the G sub-pixel and the B sub-pixel;

and multiplying the common pixel data by the light transmittance ratio to obtain target pixel data of the W sub-pixel.

acquiring brightness mode information of the display panel;

converting the initial driving data according to the common pixel data and the brightness mode information, and determining target pixel data of the W sub-pixel, wherein the brightness size of the display panel indicated by the brightness mode information is positively correlated with the size of the target pixel data of the W sub-pixel.

Optionally, the converting the initial driving data according to the common pixel data and the luminance pattern information to determine target pixel data of the W sub-pixel includes:

after power saving mode trigger information is acquired, converting the initial driving data according to the public pixel data and the brightness mode information, and determining target pixel data of the W sub-pixel and a driving current value of the backlight source, wherein the size of the target pixel data of the W sub-pixel is inversely related to the size of the driving current value.

According to a second aspect of the embodiments of the present disclosure, there is provided an apparatus for driving a display panel display, including:

a first obtaining module configured to obtain initial driving data of the display panel, the initial driving data including: initial pixel data of the R sub-pixel, initial pixel data of the G sub-pixel, and initial pixel data of the B sub-pixel;

a second acquisition module configured to acquire common pixel data among the initial pixel data of the R sub-pixel, the initial pixel data of the G sub-pixel, and the initial pixel data of the B sub-pixel;

a determination module configured to determine target drive data from the common pixel data and the initial drive data, the target drive data comprising: target pixel data of the R sub-pixel, target pixel data of the G sub-pixel, target pixel data of the B sub-pixel, and target pixel data of the W sub-pixel;

and the driving module is configured to drive the display panel to display according to the target driving data.

Optionally, the determining module includes:

a first determining sub-module configured to subtract the common pixel data from the initial pixel data of the R sub-pixel to obtain target pixel data of the R sub-pixel;

a second determining sub-module configured to subtract the common pixel data from the initial pixel data of the G sub-pixel to obtain target pixel data of the G sub-pixel;

a third determining sub-module configured to subtract the common pixel data from the initial pixel data of the B sub-pixel to obtain target pixel data of the B sub-pixel;

a fourth determination sub-module configured to treat the common pixel data as target pixel data of the W sub-pixel.

Optionally, the apparatus further comprises:

a third obtaining module, configured to obtain a light transmittance relationship between a first picture and a second picture before determining target drive data according to the common pixel data and the initial drive data, where the first picture is a display picture when the R sub-pixel, the G sub-pixel, and the B sub-pixel all correspond to maximum pixel data and the W sub-pixel corresponds to minimum pixel data, and the second picture is a display picture when the R sub-pixel, the G sub-pixel, and the B sub-pixel all correspond to minimum pixel data and the W sub-pixel corresponds to maximum pixel data;

the determining module is configured to convert the initial driving data according to the common pixel data and the light transmittance relation to obtain the target driving data.

Optionally, the third obtaining module is configured to divide the light transmittance of the first picture by the light transmittance of the second picture to obtain a light transmittance ratio, where the light transmittance relationship includes the light transmittance ratio;

the determining module includes:

a fifth determining sub-module configured to calculate a product of a difference value between the initial pixel data and the common pixel data of each sub-pixel and the transmittance ratio to obtain target pixel data of the each sub-pixel, wherein the each sub-pixel comprises: the R sub-pixel, the G sub-pixel and the B sub-pixel;

a sixth determining sub-module configured to multiply the common pixel data by the transmittance ratio to obtain target pixel data of the W sub-pixel.

Optionally, the apparatus further comprises:

a fourth obtaining module configured to obtain luminance pattern information of the display panel before the determining of target driving data from the common pixel data and the initial driving data;

the determination module is configured to convert the initial driving data according to the common pixel data and the brightness mode information, and determine target pixel data of the W sub-pixel, wherein the brightness mode information indicates that the brightness of the display panel is positively correlated with the target pixel data of the W sub-pixel.

Optionally, the determining module is configured to, after acquiring power saving mode trigger information, convert the initial driving data according to the common pixel data and the luminance mode information, and determine target pixel data of the W sub-pixel and a driving current value of the backlight, where a size of the target pixel data of the W sub-pixel and a size of the driving current value are inversely related.

According to a third aspect of the embodiments of the present disclosure, there is provided a display panel including a display panel provided with R, G, B, and W sub-pixels, and the apparatus for driving a display panel according to any one of the above second aspects.

According to a fourth aspect of the embodiments of the present disclosure, there is provided a terminal mounted with the display screen provided by the third aspect.

According to a fifth aspect of embodiments of the present disclosure, there is provided a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method of any one of the above first aspects.

According to a sixth aspect of the embodiments of the present disclosure, there is provided an apparatus for driving a display panel display, including:

the driving chip is stored with executable instructions;

the driver chip is configured to:

acquiring initial driving data of a display panel, the initial driving data comprising: initial pixel data of the R sub-pixel, initial pixel data of the G sub-pixel, and initial pixel data of the B sub-pixel;

and driving the display panel to display according to the target driving data.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

according to the display panel driving method and device, initial driving data and common driving data of the display panel are obtained, the initial driving data are converted through the common driving data, target driving data including target pixel data of four sub-pixels are determined, the display panel provided with the four sub-pixels is driven to display according to the target driving data, and the display panel provided with the four sub-pixels is driven to display according to pixel data of an R sub-pixel, pixel data of a G sub-pixel and pixel data of a B sub-pixel.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

FIG. 1 is a flow diagram illustrating a method of driving a display panel display according to an exemplary embodiment;

FIG. 2 is a flow diagram illustrating another method of driving a display panel display according to an exemplary embodiment;

FIG. 3 is a flow chart illustrating another method of driving a display panel display according to an exemplary embodiment;

FIG. 4 is a block diagram illustrating an apparatus for driving a display panel display according to an exemplary embodiment;

FIG. 5 is a block diagram illustrating another apparatus for driving a display panel display according to an exemplary embodiment;

FIG. 6 is a block diagram illustrating another apparatus for driving a display panel display according to an exemplary embodiment;

FIG. 7 is a block diagram illustrating another apparatus for driving a display panel display according to an exemplary embodiment;

fig. 8 is a schematic structural diagram illustrating an apparatus for driving a display panel display according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

The terminal with the image display function comprises a display screen and a control chip, wherein the display screen comprises a display panel and a driving chip, the control chip is electrically connected with the driving chip, the control chip transmits pixel data (digital signals) of an image to the driving chip, the driving chip is electrically connected with the display panel, the driving chip generates voltage signals (analog signals) according to the pixel data of the image, the voltage signals are input to the display panel, and the display panel is driven to display according to the voltage signals. The pixel data may be understood as gray scale data.

The present disclosure provides a method for driving a display panel to display, which is applied to a driving chip for driving a display panel provided with R, G, B and W sub-pixels to display. Referring to fig. 1, a flowchart of a method of driving a display panel display according to an exemplary embodiment is shown, the method including:

in step 101, initial driving data of a display panel is acquired, the initial driving data including: initial pixel data of the R sub-pixel, initial pixel data of the G sub-pixel, and initial pixel data of the B sub-pixel.

In the present disclosure, the initial driving data is data sent by the control chip to the driving chip, and includes initial pixel data of the R sub-pixel, initial pixel data of the G sub-pixel, and initial pixel data of the B sub-pixel.

In step 102, common pixel data among the initial pixel data of the R sub-pixel, the initial pixel data of the G sub-pixel, and the initial pixel data of the B sub-pixel is acquired.

After acquiring initial driving data of the display panel, the driving chip performs data analysis on initial pixel data of the R sub-pixel, initial pixel data of the G sub-pixel and initial pixel data of the B sub-pixel included in the initial driving data, and acquires common pixel data among the initial pixel data of the R sub-pixel, the initial pixel data of the G sub-pixel and the initial pixel data of the B sub-pixel in the initial driving data.

The common pixel data is pixel data included in the initial pixel data of the R sub-pixel, the initial pixel data of the G sub-pixel, and the initial pixel data of the B sub-pixel, and there are various common pixel data, such as common pixel data, convention pixel data, and the like.

In an alternative embodiment of the invention, the common pixel data is maximum common pixel data or maximum convention pixel data. For example, the initial driving data includes R32, G64, and B128, where 32, 64, and 128 are gray scale data, respectively, and if the common pixel data is the maximum common pixel data, the common pixel data acquired according to the initial driving data is 32. As another example, the initial driving data includes R50, G64, and B128, where 50, 64, and 128 are gray scale data, respectively, and if the common pixel data is the maximum common pixel data, the common pixel data acquired according to the initial driving data is 50.

In step 103, target drive data is determined based on the common pixel data and the initial drive data, the target drive data comprising: target pixel data of the R sub-pixel, target pixel data of the G sub-pixel, target pixel data of the B sub-pixel, and target pixel data of the W sub-pixel.

After the driving chip acquires the initial driving data and the common pixel data, the driving chip determines target pixel data of the R sub-pixel, target pixel data of the G sub-pixel, target pixel data of the B sub-pixel and target pixel data of the W sub-pixel according to the common pixel data and the initial driving data, and further determines target driving data of the display panel.

Based on the setting in step 103, the driver chip has a function of determining target pixel data including four kinds of sub-pixels by converting the initial driving data according to the common pixel data, and the function of the driver chip is enriched.

In an alternative embodiment of the present invention, the driving chip determines the target driving data according to the common pixel data and the initial driving data in various ways.

For example, the operation of the driving chip determining the target driving data according to the common pixel data and the initial driving data may be implemented by: subtracting the public pixel data from the initial pixel data of the R sub-pixel to obtain target pixel data of the R sub-pixel; subtracting the common pixel data from the initial pixel data of the G sub-pixel to obtain target pixel data of the G sub-pixel; subtracting the public pixel data from the initial pixel data of the B sub-pixel to obtain target pixel data of the B sub-pixel; the common pixel data is taken as the target pixel data of the W sub-pixel.

For example, the initial driving data includes R32, G64 and B128, where 32, 64 and 128 are gray scale data and the common pixel data is 32, respectively, and according to the method described in steps 1031 to 1034, the target pixel data of the R sub-pixel is 0, the target pixel data of the G sub-pixel is 32, the target pixel data of the B sub-pixel is 64, and the target pixel data of the W sub-pixel is 32, and the determined target driving data includes: r0, G32, B64 and W32.

Based on the settings of steps 1031 to 1034, the driver chip determines the target driver data according to the common pixel data and the initial driver data, and the functions of the driver chip are enriched.

As another example, referring to fig. 2 which is a flowchart illustrating another method for driving a display panel to display according to an exemplary embodiment, before the step 103 is executed, the driving chip may further execute the following steps: in step 105, a light transmittance relationship between a first picture and a second picture is obtained, where the first picture is a display picture when the R, G, and B sub-pixels all correspond to maximum pixel data and the W sub-pixel corresponds to minimum pixel data, the second picture is a display picture when the R, G, and B sub-pixels all correspond to minimum pixel data and the W sub-pixel corresponds to maximum pixel data, the maximum pixel data is 255 gray scale data, and the minimum pixel data is 0 gray scale data.

Referring to fig. 2, on the basis of step 105, step 103 may be implemented by: in step 1031, the initial drive data is converted according to the common pixel data and the light transmittance relationship to obtain target drive data.

Based on the settings of step 105 and step 1031, the driving chip has the functions of obtaining the transmittance relationship and converting the initial driving data according to the transmission filter relationship and the common pixel data to obtain the target driving data, and the driving chip uses the transmission filter relationship to perform color correction and brightness correction on the display pictures before and after the conversion of the driving data, so that the color difference and the brightness difference between the display pictures before and after the conversion of the driving data are reduced, the quality of the display pictures is ensured, and the functions of the driving chip are enriched.

Note that the display screen before and after the drive data conversion includes: the display panel displays a picture when the display panel is directly driven by the initial driving data and displays a picture when the display panel is driven by the target driving data.

In an alternative embodiment of the present invention, the transmittance relationship between the first frame and the second frame mentioned in step 105 is various, for example, the transmittance ratio between the first frame and the second frame, the product of the transmittance ratio between the first frame and the second frame and a preset parameter value, and the like.

When the transmittance relationship includes a transmittance ratio, the step 105 can be implemented as follows: and dividing the light transmittance of the first picture by the light transmittance of the second picture to obtain a light transmittance ratio. In implementation, the driving chip may respectively obtain the light transmittance of the first picture and the light transmittance of the second picture, and then divide the light transmittance of the first picture by the light transmittance of the second picture to obtain the light transmittance ratio.

Further, step 1031 may be implemented by steps 1 and 2 below:

in step 1, calculating a product of a difference value between the initial pixel data and the common pixel data of each sub-pixel and a transmittance ratio to obtain target pixel data of each sub-pixel, wherein each sub-pixel comprises: r sub-pixel, G sub-pixel, B sub-pixel.

Specifically, subtracting the public pixel data from the initial pixel data of the R sub-pixel to obtain a pixel data difference value of the R sub-pixel, and multiplying the pixel data difference value of the R sub-pixel by the light transmittance ratio to obtain target pixel data of the R sub-pixel; subtracting the public pixel data from the initial pixel data of the G sub-pixel to obtain a pixel data difference value of the G sub-pixel, and multiplying the pixel data difference value of the G sub-pixel by the light transmittance ratio to obtain target pixel data of the G sub-pixel; subtracting the public pixel data from the initial pixel data of the B sub-pixel to obtain a pixel data difference value of the B sub-pixel, and multiplying the pixel data difference value of the B sub-pixel by the light transmittance ratio to obtain target pixel data of the B sub-pixel;

in step 2, the common pixel data is multiplied by the transmittance ratio to obtain target pixel data of the W sub-pixel.

For example, the initial driving data includes R32, G64 and B128, where 32, 64 and 128 are gray scale data, respectively, the common pixel data is 32, when the display panel displays the first picture described in step 105, the transmittance of the first picture is tested to be 3.8%, when the display panel displays the second picture described in step 105, the transmittance of the second picture is tested to be 5%, the transmittance ratio between the first picture and the second picture is obtained to be 3.8/5, and the process of the driver chip determining the target driving data is as follows:

the driving chip subtracts the public pixel data 32 from the initial pixel data 32 of the R sub-pixel to obtain a pixel data difference value 0, and multiplies the pixel data difference value 0 by a light transmission filter ratio value 3.8/5 to obtain target pixel data of the R sub-pixel as 0;

the driving chip subtracts the common pixel data 32 from the initial pixel data 64 of the G sub-pixel to obtain a pixel data difference value 32, multiplies the pixel data difference value 32 by a light transmission filter ratio value of 3.8/5 to obtain target pixel data of the G sub-pixel, wherein the target pixel data is 32 x (3.8/5), and the integer is 24;

the driving chip subtracts the common pixel data 32 from the initial pixel data 128 of the B sub-pixel to obtain a pixel data difference value 64, multiplies the pixel data difference value 64 by the light transmission filter ratio value 3.8/5 to obtain target pixel data of the G sub-pixel, wherein the target pixel data is 64 x (3.8/5), and the integer is 48;

the driving chip multiplies the common pixel data 32 by a light transmission and filtering ratio value of 3.8/5 to obtain target pixel data of the W sub-pixel, wherein the target pixel data is 32 x (3.8/5), and the integer is 24;

thus, the driver chip determines that the target driving data includes R0, G24, B48, W24.

Based on the setting of the above operation in this embodiment, the driving chip has the functions of acquiring the light transmittance ratio between the first picture and the second picture and obtaining the target pixel data of the four sub-pixels according to the light transmittance ratio, and the functions of the driving chip are enriched.

In an alternative embodiment of the present invention, the brightness mode information of the display panel indicates a brightness mode category or a brightness mode level of the display panel, for example, the brightness mode information may be highlight mode information, normal brightness display mode information, low brightness mode information, or the like; alternatively, the luminance pattern information may be primary luminance pattern information, secondary luminance pattern information, tertiary luminance pattern information, or the like. The brightness mode information of the display panel can be used as the determination basis of the target driving data, the target driving data is determined according to the brightness mode information of the display panel, and the target driving data is used for controlling the display of the display panel so as to improve the brightness display effect of the display panel.

Referring to fig. 3, which is a flowchart illustrating another method for driving a display panel according to an exemplary embodiment, before step 103, the method may further include: in step 106, acquiring brightness mode information of the display panel; on the basis of step 106, step 103 can be implemented by: in step 1032, the initial driving data is converted according to the common pixel data and the brightness mode information, and the target pixel data of the W sub-pixel is determined, wherein the brightness size of the display panel indicated by the brightness mode information is positively correlated with the size of the target pixel data of the W sub-pixel.

For step 106, the luminance mode information may be a luminance mode level, such as a primary luminance mode, a secondary luminance mode, and the like, or a luminance mode name, such as a highlight mode, a normal luminance mode, and the like.

There are various ways to obtain the brightness mode information of the display panel, for example, the driving chip directly detects the brightness mode information of the display panel when executing the method; or, receiving brightness mode information of the display panel input from outside; alternatively, a luminance pattern information table is previously established, the luminance pattern information table including: and the driving chip firstly acquires the current time information and then searches a brightness mode information table according to the current time information to acquire the brightness mode information corresponding to the current time information.

With respect to step 1032, after the brightness pattern information of the display panel is obtained, the brightness pattern information is used as a basis for determining the target pixel data of the W sub-pixel, and when the brightness pattern information indicates that the brightness of the display panel is high, the target pixel data of the W sub-pixel may be increased appropriately to achieve the high-brightness display of the display panel.

In implementation, weight values may be set in advance for different luminance pattern information, and the brighter the display luminance of the display panel indicated by the luminance pattern information is, the larger the weight value corresponding to the luminance pattern information is. For example, when the luminance pattern information is the normal luminance pattern, the weight value set for the normal luminance pattern is 1; when the brightness mode information is a highlight mode, the weight value set for the highlight mode is 1.2; when the luminance pattern information is the low luminance pattern, the weight value set for the low luminance pattern is 0.8.

And the driving chip determines the target pixel data of the W sub-pixel according to the weight value corresponding to the public pixel data and the brightness mode information.

For example, the driving chip may convert the initial driving data according to the common pixel data to obtain converted pixel data of the W sub-pixel, and then multiply the converted pixel data of the W sub-pixel by a weight value corresponding to the obtained luminance mode information to obtain target pixel data of the W sub-pixel.

For example, the initial driving data includes R32, G64, and B128, where 32, 64, and 128 are grayscale data, the common pixel data is 32, the obtained luminance pattern information of the display panel is a highlight pattern, the driving chip obtains the converted pixel data of the W sub-pixel as 32 through calculation, and then multiplies the converted pixel data 32 of the W sub-pixel by a weight value 1.2 corresponding to the highlight pattern to obtain the target pixel data 32 of the W sub-pixel, where the target pixel data 32 of the W sub-pixel is rounded pixel data.

Based on the setting of step 106, the driving chip has a function of acquiring the brightness mode information of the display panel, and based on the setting of step 1032, the driving chip has a function of converting the initial driving data according to the common pixel data and the brightness mode information and determining the target pixel data of the W sub-pixel, the functions of the driving chip are enriched, and the driving chip improves the brightness display effect of the display panel by executing the above operations.

In an alternative embodiment of the present invention, the lcd device uses a backlight source to provide a light source for the lcd panel, and in order to reduce energy consumption of the lcd device and save electric energy, the step 1032 can be implemented as follows: after the power saving mode trigger information is obtained, converting initial driving data according to the public pixel data and the brightness mode information, and determining target pixel data of the W sub-pixel and the driving current value of the backlight source, wherein the size of the target pixel data of the W sub-pixel is inversely related to the size of the driving current value.

After the drive chip acquires the power saving mode trigger information, the drive chip determines the target pixel data of the W sub-pixel and the drive current value of the backlight source together according to the public pixel data and the brightness mode information of the display panel, can increase the target pixel data of the W sub-pixel, reduce the drive current value of the backlight source, and reduce the drive current value of the backlight source under the condition of not changing or slightly changing the display brightness of the display panel, so that the power consumption of the liquid crystal display device is reduced, the power saving purpose is achieved, and the functions of the drive chip are enriched.

The driving chip may obtain the power saving mode trigger information in various ways, for example, receiving the power saving mode trigger information input by a user, specifically, receiving a pressing operation of the user on a preset key of the terminal, receiving a selection operation of the user on a designated option in a terminal setting interface, receiving the power saving mode trigger information input by the user in an input frame in the terminal setting interface, receiving language information input by the user, where the language information indicates the power saving mode trigger information, and the like; or when the current time meets a preset time condition, the memory chip judges to acquire the power saving mode trigger information.

In the implementation, a power saving mode information table may be preset in the driver chip, where the power saving mode information table includes: the power saving mode information (such as power saving mode grade, power saving amount, etc.) and the driving current value of the backlight source, and the more the power saving amount indicated by the power saving mode information is, the smaller the driving current value of the backlight source is.

After the driving chip obtains the power saving mode trigger information, it may obtain the power saving mode information, for example, obtain the power saving mode information from the power saving mode trigger information, receive the power saving mode information input by the user, and then look up a preset power saving mode information table according to the obtained power saving mode information, obtain a driving current value of the backlight corresponding to the power saving mode information, and control the backlight to operate by using the obtained driving current value.

And the driving chip determines the target pixel data of the W sub-pixel according to the obtained driving current value of the backlight source. Generally, the smaller the drive current value, the larger the target pixel data of the W sub-pixel.

Illustratively, the driving chip may determine the target pixel data of the W sub-pixel according to the obtained driving current value of the backlight by performing the following steps 1 to 4, where the steps 1 to 4 are as follows:

step 1, the driving chip converts the initial driving data according to the common pixel data and the brightness mode information according to the exemplary implementation manner in step 1032, and determines the target pixel data 1 of the W sub-pixel;

step 2, the obtained driving current value of the backlight source is called as a driving current value 1, the current driving current value of the backlight source is called as a driving current value 2, and the driving chip calculates a current difference value between the driving current value 1 and the driving current value 2;

step 3, the driving chip determines changed pixel data corresponding to the current difference value according to a change relation between a preset driving current value of the backlight source and target pixel data of the W sub-pixel;

for example, the preset transformation relation is as follows: the driving current value of the backlight source is reduced by N, the target pixel data of the W sub-pixel is increased by M, the driving current value of the backlight source is increased by N, and the target pixel data of the W sub-pixel is reduced by M, wherein M and N are positive numbers. And after determining that the current difference value is Z according to the step 2, the driving chip calculates the transformed pixel data of the W sub-pixel as | Z | × (M/N).

And 4, calculating the target pixel data 1 determined in the step 1 and the changed pixel data determined in the step 3 to obtain the target pixel data of the W sub-pixel.

If the changed pixel data is negative, indicating that the driving current value of the backlight source needs to be reduced, adding the changed pixel data to the target pixel data 1 to obtain pixel data sum, and adding the obtained pixel data sum to be used as the target pixel data of the W sub-pixel; if the changed pixel data is positive, which indicates that the driving current value of the backlight needs to be increased, the changed pixel data is subtracted from the target pixel data 1 to obtain a pixel data difference value, and the obtained pixel data difference value is used as the target pixel data of the W sub-pixel.

In step 104, the display panel is driven to display according to the target driving data.

And after the driving chip acquires the target driving data, driving a display panel provided with four sub-pixels to display according to the target driving data. Specifically, after acquiring target drive data, the drive chip converts target pixel data of an R sub-pixel in the target drive data into an R analog voltage signal, converts target pixel data of a G sub-pixel into a G analog voltage signal, converts target pixel data of a B sub-pixel into a B analog voltage signal, converts target pixel data of a W sub-pixel into a W analog voltage signal, inputs an analog voltage combination signal to the display panel, and drives the display panel provided with four sub-pixels to display, wherein the analog voltage combination signal includes the R analog voltage signal, the G analog voltage signal, the B analog voltage signal, and the W analog voltage signal.

Therefore, the driving chip drives the display panel provided with four sub-pixels (pixel data of the R sub-pixel, pixel data of the G sub-pixel, pixel data of the B sub-pixel and pixel data of the W sub-pixel) to display according to the pixel data of the R sub-pixel, the pixel data of the G sub-pixel and the pixel data of the B sub-pixel.

While, for purposes of simplicity of explanation, the foregoing method embodiments have been described as a series of acts or combination of acts, it will be appreciated by those skilled in the art that the present disclosure is not limited by the order of acts, as some steps may, in accordance with the present disclosure, occur in other orders and concurrently.

Further, those skilled in the art should also appreciate that the embodiments described in the specification are exemplary embodiments and that acts and modules referred to are not necessarily required by the disclosure.

Corresponding to the embodiment of the application function implementation method, the disclosure also provides an embodiment of an application function implementation device, a display screen and a corresponding terminal.

Referring to fig. 4, a block diagram of an apparatus for driving a display panel according to an exemplary embodiment is shown, the apparatus including:

a first obtaining module 21 configured to obtain initial driving data of the display panel, the initial driving data including: initial pixel data of the R sub-pixel, initial pixel data of the G sub-pixel, and initial pixel data of the B sub-pixel;

a second obtaining module 22 configured to obtain common pixel data among the initial pixel data of the R sub-pixel, the initial pixel data of the G sub-pixel, and the initial pixel data of the B sub-pixel;

a determining module 23 configured to determine target drive data from the common pixel data and the initial drive data, the target drive data comprising: target pixel data of the R sub-pixel, target pixel data of the G sub-pixel, target pixel data of the B sub-pixel, and target pixel data of the W sub-pixel;

and the driving module 24 is configured to drive the display panel to display according to the target driving data.

In an alternative embodiment, the common pixel data is common pixel data or convention pixel data.

Referring to fig. 5, which is a block diagram of another apparatus for driving a display panel according to an exemplary embodiment, on the basis of the embodiment of the apparatus shown in fig. 4, the determining module 23 includes:

a first determining sub-module 231 configured to subtract the common pixel data from the initial pixel data of the R sub-pixel to obtain target pixel data of the R sub-pixel;

a second determining sub-module 232 configured to subtract the common pixel data from the initial pixel data of the G sub-pixel to obtain target pixel data of the G sub-pixel;

a third determining sub-module 233 configured to subtract the common pixel data from the initial pixel data of the B sub-pixel to obtain target pixel data of the B sub-pixel;

a fourth determining sub-module 234 configured to treat the common pixel data as target pixel data of the W sub-pixel.

Referring to fig. 6, a block diagram of another apparatus for driving a display panel according to an exemplary embodiment is shown, and based on the embodiment of the apparatus shown in fig. 4, the apparatus further includes:

a third obtaining module 25, configured to, before determining target drive data according to the common pixel data and the initial drive data, obtain a light transmittance relationship between a first picture and a second picture, where the first picture is a display picture when the R sub-pixel, the G sub-pixel, and the B sub-pixel all correspond to maximum pixel data and the W sub-pixel corresponds to minimum pixel data, and the second picture is a display picture when the R sub-pixel, the G sub-pixel, and the B sub-pixel all correspond to minimum pixel data and the W sub-pixel corresponds to maximum pixel data;

the determining module 23 is configured to convert the initial driving data according to the common pixel data and the light transmittance relation to obtain the target driving data.

In an optional embodiment, the third obtaining module 25 is configured to divide the transmittance of the first picture by the transmittance of the second picture to obtain a transmittance ratio, where the transmittance relationship includes the transmittance ratio;

the determining module 23 includes:

Referring to fig. 7, a block diagram of another apparatus for driving a display panel according to an exemplary embodiment is shown, and based on the embodiment of the apparatus shown in fig. 4, the apparatus further includes:

a fourth obtaining module 26 configured to obtain luminance pattern information of the display panel before the determining of target driving data from the common pixel data and the initial driving data;

the determining module 23 is configured to convert the initial driving data according to the common pixel data and the luminance pattern information, and determine target pixel data of the W sub-pixel, wherein the luminance pattern information indicates that the luminance magnitude of the display panel is positively correlated with the magnitude of the target pixel data of the W sub-pixel.

In an optional embodiment, the determining module 23 is configured to, after acquiring the power saving mode trigger information, convert the initial driving data according to the common pixel data and the luminance mode information, and determine target pixel data of the W sub-pixel and a driving current value of the backlight source, where a size of the target pixel data of the W sub-pixel and a size of the driving current value are inversely related.

The present disclosure also provides a display screen, which includes a display panel and the apparatus for driving the display panel to display provided by the present disclosure, wherein the display panel is provided with an R sub-pixel, a G sub-pixel, a B sub-pixel and a W sub-pixel.

The display screen has the advantages of the device for driving the display panel to display, and the details are not repeated in the disclosure. Based on the setting of the device for driving the display panel to display, the function of the display screen is enriched.

The present disclosure also provides a terminal equipped with the display screen provided by the present disclosure.

The terminal has the advantages of the display screen, and the details of the disclosure are omitted. Based on the setting of the display screen, the intelligence of the terminal is improved.

There are various terminals, such as a mobile phone, a PC (Personal Computer), a wearable device, and the like.

For the device embodiments, since they substantially correspond to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the disclosed solution. One of ordinary skill in the art can understand and implement it without inventive effort.

Accordingly, in one aspect, the present disclosure provides an apparatus for driving a display panel to display, including: the driving chip is stored with executable instructions; the driving chip is configured to:

and driving the display panel to display according to the target driving data.

Fig. 8 is a schematic diagram illustrating a structure of an apparatus 1600 for driving a display panel display according to an exemplary embodiment. For example, apparatus 1600 may be a user device, which may be embodied as a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, a wearable device such as a smart watch, smart glasses, a smart bracelet, a smart running shoe, and the like.

Referring to fig. 8, apparatus 1600 may include one or more of the following components: processing component 1602, memory 1604, power component 1606, multimedia component 1608, audio component 1610, input/output (I/O) interface 1612, sensor component 1614, and communications component 1616.

The processing component 1602 generally controls overall operation of the device 1600, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 1602 may include one or more processors 1620 to execute instructions. Further, the processing component 1602 can include one or more modules that facilitate interaction between the processing component 1602 and other components. For example, the processing component 1602 can include a multimedia module to facilitate interaction between the multimedia component 1608 and the processing component 1602.

The multimedia component 1608 comprises a screen including a display panel and a driver chip 1608-1, where the driver chip stores executable instructions, the driver chip interacts with the processing component 1602, and the driver chip receives pixel data of an image sent by the processing component 1602, and performs all or part of the steps of the method.

The memory 1604 is configured to store various types of data to support operation at the device 1600. The memory 1604 may be implemented by any type of volatile or non-volatile memory device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

A power supply component 1606 provides power to the various components of the device 1600. The power components 1606 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 1600.

The multimedia component 1608 includes a screen that provides an output interface between the apparatus 1600 and a user as described above. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of the touch or slide action but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 1608 comprises a front-facing camera and/or a rear-facing camera. The front-facing camera and/or the back-facing camera may receive external multimedia data when device 1600 is in an operational mode, such as a capture mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 1610 is configured to output and/or input an audio signal. For example, audio component 1610 includes a Microphone (MIC) configured to receive external audio signals when apparatus 1600 is in an operational mode, such as a call mode, recording mode, and voice recognition mode. The received audio signal may further be stored in the memory 1604 or transmitted via the communications component 1616. In some embodiments, audio component 1610 further includes a speaker for outputting audio signals.

The I/O interface 1612 provides an interface between the processing component 1602 and peripheral interface modules, such as keyboards, click wheels, buttons, and the like. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

Sensor assembly 1614 includes one or more sensors for providing status assessment of various aspects to device 1600. For example, sensor assembly 1614 can detect an open/closed state of device 1600, the relative positioning of components, such as a display and keypad of device 1600, a change in position of device 1600 or a component of device 1600, the presence or absence of user contact with device 1600, orientation or acceleration/deceleration of device 1600, and a change in temperature of device 1600. The sensor assembly 1614 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 1614 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1614 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communications component 1616 is configured to facilitate communications between the apparatus 1600 and other devices in a wired or wireless manner. The device 1600 may access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 1616 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the aforementioned communication component 1616 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the apparatus 1600 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

In an exemplary embodiment, there is also provided a non-transitory computer readable storage medium, for example, including a driver chip, whose instructions when executed by the driver chip enable the apparatus 1600 to perform a method of driving a display panel display, the method including:

and driving the display panel to display according to the target driving data.

The non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A method for driving a display panel to display, wherein the display panel is provided with an R sub-pixel, a G sub-pixel, a B sub-pixel and a W sub-pixel, the method comprising:

converting the initial driving data according to the common pixel data and the light transmittance relation, and determining target driving data, wherein the target driving data comprises: target pixel data of the R sub-pixel, target pixel data of the G sub-pixel, target pixel data of the B sub-pixel, and target pixel data of the W sub-pixel;

and driving the display panel to display according to the target driving data.

2. The method of claim 1, wherein the common pixel data is common pixel data or convention pixel data.

3. The method of claim 1, wherein converting the initial drive data according to the common pixel data and the light transmittance relationship to determine target drive data comprises:

and taking the common pixel data as target pixel data of the W sub-pixel.

4. The method of claim 1, wherein the transmittance relationship comprises a transmittance ratio, and wherein obtaining the transmittance relationship between the first frame and the second frame comprises:

5. The method of claim 1, wherein prior to said converting the initial drive data according to the common pixel data and the light transmittance relationship to determine target drive data, the method further comprises:

acquiring brightness mode information of the display panel;

6. The method of claim 5, wherein converting the initial driving data according to the common pixel data and the luminance pattern information to determine target pixel data of the W sub-pixel comprises:

after power saving mode trigger information is acquired, converting the initial driving data according to the public pixel data and the brightness mode information, and determining target pixel data of the W sub-pixel and a driving current value of a backlight source, wherein the size of the target pixel data of the W sub-pixel is inversely related to the size of the driving current value.

7. An apparatus for driving a display panel, comprising:

a third obtaining module configured to obtain a light transmittance relationship between a first picture and a second picture, the first picture being a display picture when the R sub-pixel, the G sub-pixel, and the B sub-pixel all correspond to maximum pixel data and the W sub-pixel corresponds to minimum pixel data, the second picture being a display picture when the R sub-pixel, the G sub-pixel, and the B sub-pixel all correspond to minimum pixel data and the W sub-pixel corresponds to maximum pixel data;

a determining module configured to convert the initial driving data according to the common pixel data and the light transmittance relationship, and determine target driving data, the target driving data including: target pixel data of the R sub-pixel, target pixel data of the G sub-pixel, target pixel data of the B sub-pixel, and target pixel data of the W sub-pixel;

8. The apparatus of claim 7, wherein the common pixel data is common pixel data or convention pixel data.

9. The apparatus of claim 7, wherein the determining module comprises:

10. The apparatus of claim 7, wherein:

the third obtaining module is configured to divide the light transmittance of the first picture by the light transmittance of the second picture to obtain a light transmittance ratio, where the light transmittance relationship includes the light transmittance ratio;

the determining module includes:

11. The apparatus of claim 7, further comprising:

12. The apparatus of claim 11, wherein:

the determining module is configured to, after power saving mode trigger information is acquired, convert the initial driving data according to the common pixel data and the luminance mode information, and determine target pixel data of the W sub-pixel and a driving current value of a backlight source, where a size of the target pixel data of the W sub-pixel and a size of the driving current value are inversely related.

13. A display panel comprising a display panel provided with R, G, B, and W sub-pixels, and the apparatus for driving a display panel according to any one of claims 7 to 12.

14. A terminal characterized in that the display screen of claim 13 is mounted.

15. A non-transitory computer readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 6.

16. An apparatus for driving a display panel, comprising:

the driving chip is stored with executable instructions;

the driver chip is configured to:

and driving the display panel to display according to the target driving data.