CN115909972A

CN115909972A - Display control method, display drive chip, device, and storage medium

Info

Publication number: CN115909972A
Application number: CN202211516551.4A
Authority: CN
Inventors: 刘练彬; 梁恒镇; 闵航; 刘庭良; 邓英俊; 王吉; 代思忆; 常欣
Original assignee: BOE Technology Group Co Ltd; Chengdu BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Chengdu BOE Optoelectronics Technology Co Ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-04-04

Abstract

The application discloses a display control method, a display driving chip, a device and a storage medium, and belongs to the technical field of display. In the application, in response to receiving a partition control instruction, a display driving chip of the display screen partitions the whole display area of the display screen into a first display partition and a second display partition, and controls the two display partitions to perform picture display at different refresh rates, for example, the first display partition is driven at a high refresh rate, and the second display partition is driven at a low refresh rate. In addition, the embodiment of the application also limits the partition mode of the display screen to be started in a specific application scene, so that the flexibility of display control is increased.

Description

Display control method, display driving chip, device and storage medium

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to a display control method, a display driver chip, a device, and a storage medium.

Background

In the display field, currently, electronic products such as smart phones and the like increasingly use Active-Matrix Organic Light-emitting diodes (AMOLED) display screens. The AMOLED display screen has the advantages of high response speed, excellent display effect, low power consumption and the like.

However, with the rapid development of display technologies, in order to obtain smoother image quality inspection, the refresh rate of the AMOLED display screen is developing towards higher and higher, and accordingly, the whole display area of the AMOLED display screen is usually displayed at a high refresh rate (e.g. 120 Hz), which makes the power consumption of a Driver Integrated Circuit (DIC) of the AMOLED display screen higher and higher. Therefore, a display control method is needed to meet the requirement of the refresh rate and to embody the power consumption advantage of the AMOLED display screen as much as possible.

Disclosure of Invention

The embodiment of the application provides a display control method, a display driving chip, a device and a storage medium, which can meet the requirements of a refresh rate and reduce power consumption. The technical scheme is as follows:

in one aspect, a display control method is provided for a display driver chip of a display screen, and the method includes:

receiving a partition control instruction issued by a control unit electrically connected with the display driving chip; the partition control instruction is issued by the control unit after determining that the current application scene type of the display screen is a target application scene;

dividing a display area of the display screen into a first display partition and a second display partition based on the partition control instruction;

controlling the first display subarea to display pictures at a first refresh rate, and controlling the second display subarea to display pictures at a second refresh rate; the second refresh rate is less than the first refresh rate.

Optionally, the method further comprises:

outputting a first Tearing Effect (TE) signal corresponding to the first display partition and a second TE signal corresponding to the second display partition to the control unit, respectively;

the blanking area of the first TE signal corresponds to the effective display area of the second TE signal, and the effective display area of the first TE signal corresponds to the blanking area of the second TE signal.

Optionally, the target application scene includes a game scene, a video playing scene, or a sliding scene with a sliding speed greater than a speed threshold;

the dividing of the display area of the display screen into a first display partition and a second display partition comprises:

responsive to the display screen being currently in a landscape orientation, vertically dividing the display area into the first display partition and the second display partition;

in response to the display screen being currently in a portrait screen pose, dividing the display area laterally into the first display partition and the second display partition;

wherein the first display partition is larger than the second display partition.

Optionally, the controlling the first display partition to perform the screen display at a first refresh rate and the controlling the second display partition to perform the screen display at a second refresh rate includes:

and controlling the first display partition to display a dynamic picture at the first refresh rate, and controlling the second display partition to display a static picture at the second refresh rate.

Optionally, for any one of the first display partition and the second display partition, the pixel units in the display partition include a pixel compensation circuit, the pixel compensation circuit inputs an initial voltage signal through an initial voltage signal line, and controls the light emitting device of the pixel compensation circuit to reset by the initial voltage signal; the method further comprises the following steps:

inputting initial voltage signals with different voltage values to corresponding pixel compensation circuits through initial voltage signal lines corresponding to pixel units in different display partitions;

wherein the initial voltage signals different in voltage value are determined based on a target display condition;

the target display condition comprises that the brightness difference between the first display partition and the second display partition is smaller than a brightness threshold value, and the chroma difference is smaller than a chroma threshold value.

Optionally, for any one of the first display partition and the second display partition, the pixel units in the display partition include a pixel compensation circuit, the pixel compensation circuit inputs a light emission control signal via a light emission control signal line, and controls a light emitting device of the pixel compensation circuit to emit light by the light emission control signal; the method further comprises the following steps:

respectively inputting light-emitting control signals with different light-emitting time ratios to corresponding pixel compensation circuits through light-emitting control signal lines corresponding to pixel units in different display partitions;

wherein the light emission control signals different in light emission time ratio are determined based on a target display condition;

Optionally, the method further comprises:

before controlling the second display subarea to display the next frame of picture, adding at least one frame of transition picture for display;

wherein the number of frames of the transition picture is determined based on a target display condition;

In another aspect, a display driver chip is provided, where the display driver chip is configured to:

controlling the first display subarea to display the picture at a first refresh rate, and controlling the second display subarea to display the picture at a second refresh rate; the second refresh rate is less than the first refresh rate.

Optionally, the display driver chip is further configured to:

outputting a first TE signal corresponding to the first display subarea and a second TE signal corresponding to the second display subarea to the control unit respectively;

Optionally, the target application scene includes a game scene, a video playing scene, or a sliding scene with a sliding speed greater than a speed threshold; the display driving chip is used for:

in response to the display screen being currently in a landscape screen pose, vertically dividing the display area into the first display partition and the second display partition;

Optionally, the display driving chip is configured to:

and controlling the first display partition to display the dynamic picture at the first refresh rate, and controlling the second display partition to display the static picture at the second refresh rate.

Optionally, for any one of the first display partition and the second display partition, the pixel units in the display partition include a pixel compensation circuit, the pixel compensation circuit inputs an initial voltage signal through an initial voltage signal line, and controls the light emitting device of the pixel compensation circuit to reset by the initial voltage signal; the display driving chip is further configured to:

wherein the initial voltage signals with different voltage values are determined based on target display conditions;

Optionally, for any one of the first display partition and the second display partition, the pixel units in the display partition include a pixel compensation circuit, the pixel compensation circuit inputs a light emission control signal via a light emission control signal line, and controls a light emitting device of the pixel compensation circuit to emit light by the light emission control signal; the display driving chip is further configured to:

Optionally, the display driver chip is further configured to:

In another aspect, there is provided a display apparatus including: the display control device comprises a display screen and a control unit electrically connected with a display driving chip of the display screen, wherein the display driving chip is used for executing the display control method.

In another aspect, a computer-readable storage medium is provided, in which instructions are stored, and the instructions are loaded and executed by a display driver chip to implement the above-mentioned display control method.

In another aspect, a computer program product or computer program is provided, the computer program product comprising computer instructions that are loaded and executed by a display driver chip to implement the display control method described above.

In the embodiment of the application, in response to receiving a partition control instruction issued by a control unit of a display device, a display driving chip of the display screen partitions the entire display area of the display screen, and divides the display area into a first display partition and a second display partition, and controls the two display partitions to display pictures at different refresh rates, for example, the first display partition is driven at a high refresh rate, and the second display partition is driven at a low refresh rate. In addition, the embodiment of the application limits the starting of the partition mode of the display screen in a specific application scene, and the flexibility of display control is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a diagram illustrating a display area and a refresh rate according to the related art;

FIG. 2 is a schematic flow chart illustrating a display control scheme according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a display device according to an embodiment of the present application;

fig. 4 is a flowchart of a display control method according to an embodiment of the present application;

FIG. 5 is a diagram illustrating a display area and a refresh rate according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a pixel compensation circuit according to an embodiment of the present disclosure;

fig. 7 is a schematic diagram of an EM timing sequence corresponding to different display regions according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram illustrating refresh corresponding to different display partitions according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of another display device provided in an embodiment of the present application.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The terms "first," "second," and the like, in this application, are used for distinguishing between similar items and items that have substantially the same function or similar functionality, and it should be understood that "first," "second," and "nth" do not have any logical or temporal dependency, nor do they define a quantity or order of execution. It will be further understood that, although the following description uses the terms first, second, etc. to describe various elements, these elements should not be limited by these terms.

These terms are only used to distinguish one element from another. For example, a first element can be termed a second element, and, similarly, a second element can also be termed a first element, without departing from the scope of various examples. The first element and the second element may both be elements, and in some cases, may be separate and distinct elements.

For example, at least one element may be any integer number of elements greater than or equal to one, such as one element, two elements, three elements, and the like. The plurality of elements means two or more, and for example, the plurality of elements may be two elements, three elements, or any integer number of elements equal to or greater than two.

Reference herein to "and/or" means that three relationships may exist, for example, a and/or B may represent: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

It should be noted that information (including but not limited to user equipment information, user personal information, etc.), data (including but not limited to data for analysis, stored data, presented data, etc.), and signals referred to in this application are authorized by the user or sufficiently authorized by various parties, and the collection, use, and processing of the relevant data is required to comply with relevant laws and regulations and standards in relevant countries and regions.

As described above, in order to obtain a smoother image quality examination, the refresh rate of the AMOLED display screen is higher, which causes the DIC (also called display driver chip) power consumption of the AMOLED display screen to be higher. For example, referring to fig. 1, in a normal display, the whole display area of the AMOLED display screen is displayed at the same refresh rate (frequency 1), and assuming that the frequency 1 is a high refresh rate of 120Hz, the AMOLED display screen generates a large power consumption. Therefore, the power consumption advantage of the AMOLED display screen is needed to be embodied as much as possible on the premise of considering the requirement of the refresh rate.

Therefore, the embodiment of the application provides a scheme for partitioning the whole display area of the display screen and controlling different display partitions to display the picture at different refresh rates. For example, a specific region is controlled to perform screen display at a high refresh rate (e.g., 120 Hz), and regions other than the specific region are controlled to perform screen display at a low refresh rate (e.g., 60Hz, 30Hz, 10Hz, 1 Hz). Such a display screen corresponds to two refresh rates, and certain differences in luminance and chrominance must exist at the boundaries of different display sections.

The embodiments of the present application also provide an effective solution for the luminance difference and the chrominance difference, so that the luminance and the chrominance transition at the boundary line is smooth. In other words, the embodiment of the application not only realizes different refresh rates of different areas of the same screen, but also can ensure that no brightness difference or chromaticity difference exists at the boundary of different display partitions, so that the brightness and chromaticity between the specific area and other areas are smoothly transited, and further ensures that no obvious difference exists on the picture display after the display screen enters the partition mode, thereby ensuring the display effect.

The display control scheme provided in the examples of the present application is described in detail below by way of the following embodiments.

Referring to fig. 2, a display control scheme provided in an embodiment of the present application is applied to a display apparatus 200. The display device 200 includes a control unit 201 (corresponding to the whole device in fig. 3) and a display 202. The display panel 202 includes a display driving chip 203 (corresponding to the DIC in fig. 3) electrically connected to the control unit 201. Optionally, the display screen mentioned in the embodiment of the present application is an AMOLED display screen.

In the embodiment of the present application, as shown in fig. 3, the whole device end is responsible for sending an instruction whether to partition to the DIC; if the command is a partition control command, the DIC controls the whole display area of the display screen to enter a partition mode, namely, the whole display area is partitioned, and different display partitions are controlled to display pictures at different refresh rates. If the control instruction is not a partition control instruction, the display screen performs normal display as shown in fig. 1, that is, the entire display area performs screen display at the same refresh rate.

In other words, the partition mode requires that the screen display be constrained by issuing instructions from the whole machine side. And if the partition mode needs to be entered, the whole machine end issues a corresponding instruction to the DIC, and after receiving the instruction, the DIC controls the whole display area of the display screen to display in a partition mode. If the partition mode is not required to be entered, the screen display is performed at the refresh rate of the normal display.

Based on the above description, an embodiment of the present application provides a display control method, which is used for a display driving chip of a display screen, and referring to fig. 4, the method includes:

401. and receiving a partition control instruction issued by a control unit electrically connected with the display driving chip.

In the embodiment of the application, the control unit is responsible for sending an instruction whether to partition to the DIC; and if the instruction is a partition control instruction, the DIC controls the whole display area of the display screen to enter a partition mode.

Optionally, the partition control instruction is issued by the control unit after determining that the current application scene type of the display screen is the target application scene. For example, the embodiment of the present application is collocated with a specific application program to define a specific region as a region using a high refresh rate, and other regions except the specific region are regions using a low refresh rate. Since scenes with high refresh rate requirements are typically game scenes and video playback scenes, the specific application may be a game application or a video application. In addition, for scenes involving fast sliding switching, such as desktop switching between different screens, album browsing, etc., high refresh rate requirements may also be involved, and therefore the above target application scenes include but are not limited to: a game scene, a video playing scene, or a sliding scene with a sliding speed greater than a speed threshold, which is not limited herein.

402. And dividing the display area of the display screen into a first display subarea and a second display subarea based on the subarea control instruction.

Optionally, in response to the display screen being currently in the landscape screen posture, vertically dividing the entire display area of the display screen into a first display partition and a second display partition; or, in response to the display screen being currently in the portrait screen pose, the entire display area of the display screen is divided laterally into a first display partition and a second display partition. No matter the division is performed in the above-mentioned division manner, the entire display area of the display screen can be divided into two display partitions shown in fig. 5.

In other words, fig. 5 shows that the entire display area of the display screen is divided into two parts, a first display partition (partition 1) and a second display partition (partition 2), respectively. The area of the first display subarea is larger than that of the second display subarea. And different refresh rates of different display partitions can be realized by driving the two display partitions with different timing signals.

403. Controlling the first display partition to display the picture at a first refresh rate, and controlling the second display partition to display the picture at a second refresh rate; wherein the second refresh rate is less than the first refresh rate.

Optionally, the first display partition is controlled to perform dynamic picture display at a first refresh rate, and the second display partition is controlled to perform static picture display at a second refresh rate.

In the embodiment of the present application, based on fig. 5, it can be seen that after the entire display area is divided into the first display partition and the second display partition, the first display partition corresponding to the first refresh rate (frequency 1) is a high refresh rate area, the second display partition corresponding to the second refresh rate (frequency 2) is a low refresh rate area, and the DIC outputs different TE signals for the two display partitions. Wherein the TE signal output by the DIC is used to instruct the control unit to transmit the image data to the DIC.

The TE1 timing waveform corresponding DIC shown in fig. 5 is a TE signal output by the first display partition, and the TE2 timing waveform corresponding DIC is a TE signal output by the second display partition. Moreover, the blanking region (porch region) of the TE1 timing waveform is designed in the effective display region of the TE2 timing waveform, and the effective display region of the TE1 timing waveform is designed in the blanking region of the TE2 timing waveform. In this way no distinct dividing line between the two display partitions will appear.

In other words, in the process of controlling the partition 1 to perform the screen display at the frequency 1 and the partition 2 to perform the screen display at the frequency 2, the method further includes: the DIC respectively outputs a first TE signal (TE 1 time sequence waveform in figure 5) corresponding to the first display partition and a second TE signal (TE 2 time sequence waveform in figure 5) corresponding to the second display partition to the control unit; the blanking region of the first TE signal corresponds to the effective display region of the second TE signal, and the effective display region of the first TE signal corresponds to the blanking region of the second TE signal.

In the embodiment of the application, in response to receiving a partition control instruction issued by a control unit of a display device, a DIC chip of a display screen partitions the entire display area of the display screen into a first display partition and a second display partition, and controls the two display partitions to display pictures at different refresh rates, for example, the first display partition is driven at a high refresh rate, and the second display partition is driven at a low refresh rate. In addition, the partition mode of the display screen is limited to be started in a specific application scene, and the flexibility of display control is improved.

The above is a detailed description of different refresh rates of different display regions, and how to make smooth transition of luminance and chrominance at the boundary of different display regions is described in detail below.

Optionally, in order to ensure that there is no brightness difference or chromaticity difference at the boundary of different display partitions, in the process of controlling the partition 1 to display the picture at the frequency 1 and the partition 2 to display the picture at the frequency 2, the embodiment of the present application further achieves the purpose of consistency between brightness and chromaticity of different display partitions by setting different vinit2 voltages for the two display partitions, inputting different EM timing waveforms, providing different refresh modes, and the like. The three schemes are described in detail below.

Scheme one, setting different vinit2 voltages.

In the embodiment of the present application, different vinit2 voltages are set for partition 1 and partition 2. This solution is adopted because, by analyzing the pixel compensation circuit, the vinit2 voltage setting is different, and different display effects can be obtained, so that the adjustment of the luminance and chromaticity of the two partitions can be realized by adjusting the vinit2 voltage of the partition 1 and the partition 2, and finally, the smooth transition of the luminance and chromaticity at the boundary of the two display partitions is ensured.

Taking the vinit2 voltage corresponding to the partition 1 as vinit2_ partition 1 and the vinit2 voltage corresponding to the partition 2 as vinit2_ partition 2 as an example, the DIC controls the vinit2_ partition 1 and the vinit2_ partition 2 separately, and when the display screen needs to be controlled to enter the partition mode, the vinit2_ partition 1 and the vinit2_ partition 2 are respectively assigned with corresponding values, so that the luminance difference between the partition 1 and the partition 2 can be smaller than the luminance threshold, and the chrominance difference is smaller than the chrominance threshold, thereby realizing the smooth transition of luminance and chrominance.

Optionally, the luminance threshold is 2% and the chrominance threshold is 1JNCD, which is not limited herein. Among them, JNCD is the smallest unit that the human eye can distinguish color variations, and this unit is called 1JNCD. In general, the smaller the value of JNCD, the more accurate the color display of the screen.

Alternatively, for either of display partition 1 and partition 2, the pixel cells in that display partition include the pixel compensation circuit shown in fig. 6. Illustratively, the pixel compensation circuit is a 7T1C circuit, where V _DD Is a positive pressure V of a power supply _SS Is a power supply negative voltage, gate is a scanning signal line, vinit1 is a first initial voltage signal line, vinit2 is a second initial voltage signal line, EM is a light emission control signal line, reset is a Reset control signal line, vdata is a data voltage, cst is a capacitor. Wherein, after an initial voltage signal is inputted via an initial voltage signal line (referred to as vinit2 herein), the light emitting device (OLED in fig. 6) of the pixel compensation circuit is controlled to be reset by the inputted initial voltage signal.

Based on the above description, the method further comprises: initial voltage signals with different voltage values are input to corresponding pixel compensation circuits through initial voltage signal lines (referred to as vinit 2) corresponding to pixel units in different display partitions; wherein the initial voltage signals with different voltage values are determined based on target display conditions; the target display condition includes that the brightness difference between the first display subarea and the second display subarea is smaller than the brightness threshold value, and the chroma difference is smaller than the chroma threshold value.

Alternatively, the voltage values of vinit2 corresponding to different display partitions may be determined in the following manner.

For example, assigning values to the vinit2_ partition 1 and the vinit2_ partition 2, then testing the luminance and the chrominance of the partition 1 and the partition 2 respectively, if the luminance difference and the chrominance difference of the partition 1 and the partition 2 do not meet the target conditions, continuing assigning values to the vinit2_ partition 1 and the vinit2_ partition 2 until the luminance difference is less than 2% and the chrominance difference is within 1JNCD.

In other words, this assignment + test scheme is: after initial voltage signals are respectively input to corresponding pixel compensation circuits through initial voltage signal lines corresponding to different display partitions, testing the brightness difference and the chromaticity difference among the different display partitions; after updating the voltage value of the initial voltage signal in response to the tested brightness difference and the tested chromaticity difference not meeting the target display condition, continuing to perform the step of inputting the initial voltage signal to the pixel compensation circuits corresponding to different display partitions until the tested brightness difference and the tested chromaticity difference meet the target display condition; and taking the initial voltage signal corresponding to each display partition when the target display condition is met as the initial voltage signal with different voltage values.

And in the second scheme, different EM time sequence waveforms are input.

In order to minimize the display difference between the two display sections, it is also possible to input different EM signals. This solution is adopted because the AMOLED belongs to a current device, and thus, by adjusting the emission time duty (EM duty) of the EM timing waveform corresponding to the two display partitions, the luminance and the chromaticity of the two display partitions can be adjusted, and finally, the luminance and the chromaticity at the boundary of the two display partitions are smoothly transited.

In other words, for this scheme, the DIC needs to output two different EM timing waveforms in order to drive the two display sections for picture display, respectively. The DIC may allocate Gout1 (for outputting an EM timing waveform of partition 1) for partition 1, allocate Gout2 (for outputting an EM timing waveform of partition 2) for partition 2, and perform a differential design On EM GOAs (Gate On Array, array substrate row driving) of the two display partitions, thereby achieving the purpose of uniform brightness and chromaticity between different display partitions.

Alternatively, for any one of the display partition 1 and the partition 2, the pixel cells in that display partition include a pixel compensation circuit as shown in fig. 6. Illustratively, the pixel compensation circuit is a 7T1C circuit, and as shown in fig. 6, the pixel compensation circuit controls the light emitting device of the pixel compensation circuit to emit light by an input light emission control signal after the light emission control signal is input via the light emission control signal line EM.

Based on the above description, the method further comprises: light emission control signals with different eduities (corresponding to duty1 and duty 2) as shown in fig. 7 are respectively input to the corresponding pixel compensation circuits through the light emission control signal lines corresponding to the pixel units in the different display partitions; wherein the emission control signals different in em duty are determined based on the target display condition. The target display condition includes that the brightness difference between the first display partition and the second display partition is smaller than a brightness threshold value, and the chroma difference is smaller than a chroma threshold value.

And a third scheme provides different refreshing modes.

For a Low Temperature Polycrystalline Oxide (LTPO) product, leakage current is relatively small due to the presence of Indium Gallium Zinc Oxide (IGZO), and thus the refresh rate of the partition 2 may be set to 10Hz, 1Hz, or the like. However, since the Thin Film Transistor (TFT) has hysteresis effect, if the refresh rate is set too low, the hysteresis effect of the TFT is more serious, thereby increasing the luminance difference and the chromaticity difference at the boundary of different display regions, and further affecting the display effect. Therefore, the embodiment of the present application proposes a new refresh method, i.e. the pseudo refresh shown in fig. 8, so as to improve the final display effect.

As shown in fig. 8, assuming that the partition 1 performs screen display at a refresh rate of 120Hz and the partition 2 performs screen display at a refresh rate of 1Hz, the partition 1 can be refreshed 120 times in one second, and the partition 2 is refreshed only 1 time in one second, and one frame is refreshed in one second for the partition 2 with respect to the partition 1, and 119 frames are stopped. In order to improve the phenomenon that hysteresis effect is more severe due to the low refresh rate, thereby aggravating the luminance difference and the chrominance difference at the boundary of different display regions, referring to fig. 8, a transition picture frame of a higher refresh rate may be inserted at the low refresh rate. Based on the above description, the method further comprises: before controlling the second display subarea to display the next frame of picture, adding at least one frame of transition picture for display; wherein the number of frames of the transition picture is determined based on the target display condition; the target display condition includes that the brightness difference between the first display partition and the second display partition is smaller than a brightness threshold value, and the chroma difference is smaller than a chroma threshold value. Alternatively, the transition picture may be a duplicate frame of the current frame, which is not limited herein.

The embodiment of the application can solve the problem that certain brightness difference and chromaticity difference exist at the boundary of different display partitions based on various schemes, and the processing modes are flexible and various.

The embodiment of the application provides a display driving chip. The display driving chip is used for:

receiving a partition control instruction issued by a control unit electrically connected with the display driving chip; the partition control instruction is issued by the control unit after determining that the current application scene type of the display screen is a target application scene; dividing a display area of the display screen into a first display partition and a second display partition based on the partition control instruction; controlling the first display partition to display the picture at a first refresh rate, and controlling the second display partition to display the picture at a second refresh rate; the second refresh rate is less than the first refresh rate.

In the embodiment of the application, in response to receiving a partition control instruction issued by a control unit of a display device, a DIC chip of a display screen partitions the entire display area of the display screen into a first display partition and a second display partition, and controls the two display partitions to perform picture display at different refresh rates, for example, the first display partition is driven at a high refresh rate, and the second display partition is driven at a low refresh rate. In addition, the embodiment of the application limits the starting of the partition mode of the display screen in a specific application scene, and the flexibility of display control is improved.

Optionally, the display driver chip is further configured to:

respectively outputting a first TE signal corresponding to the first display partition and a second TE signal corresponding to the second display partition to a control unit; the blanking region of the first TE signal corresponds to the effective display region of the second TE signal, and the effective display region of the first TE signal corresponds to the blanking region of the second TE signal.

in response to the display screen being currently in the landscape screen posture, vertically dividing the display area into a first display partition and a second display partition; in response to the display screen being currently in a vertical screen posture, dividing the display area into a first display partition and a second display partition in a horizontal direction; wherein the first display partition is larger than the second display partition.

Optionally, the display driving chip is configured to:

and controlling the first display partition to display the dynamic picture at a first refresh rate, and controlling the second display partition to display the static picture at a second refresh rate.

Optionally, for any one of the display partitions, the pixel units in the display partition include a pixel compensation circuit, which inputs an initial voltage signal via an initial voltage signal line and controls the light emitting device of the pixel compensation circuit to reset by the initial voltage signal; the display driving chip is further used for:

respectively inputting initial voltage signals with different voltage values to corresponding pixel compensation circuits through initial voltage signal lines corresponding to pixel units in different display partitions; wherein the initial voltage signals with different voltage values are determined based on the target display condition; the target display condition includes that the brightness difference between the first display partition and the second display partition is smaller than a brightness threshold value, and the chroma difference is smaller than a chroma threshold value.

Optionally, for any one of the display partitions, the pixel units in the display partition include a pixel compensation circuit, which inputs a light emission control signal via a light emission control signal line and controls a light emitting device of the pixel compensation circuit to emit light by the light emission control signal; the display driving chip is further used for:

respectively inputting light-emitting control signals with different light-emitting time ratios to corresponding pixel compensation circuits through light-emitting control signal lines corresponding to pixel units in different display partitions; wherein the light emission control signal having the different light emission time ratio is determined based on the target display condition.

Optionally, the display driver chip is further configured to:

before controlling the second display subarea to display the next frame of picture, adding at least one frame of transition picture for display; wherein the number of frames of the transition picture is determined based on the target display condition.

All the above optional technical solutions may be combined arbitrarily to form the optional embodiments of the present disclosure, and are not described herein again.

Fig. 9 is a schematic structural diagram of another display device provided in an embodiment of the present application. In general, the display device 900 includes: a processor 901 and a memory 902.

Processor 901 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and so forth. The processor 901 may be implemented in at least one hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), and a PLA (Programmable Logic Array). The processor 901 may also include a main processor and a coprocessor, where the main processor is a processor for Processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. Alternatively, the processor 901 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content required to be displayed by the display screen. Optionally, the processor 901 may further include an AI (Artificial Intelligence) processor for processing a calculation operation related to machine learning. The processor 901 serves as a core of the display device and is also referred to as a control unit.

Memory 902 may include one or more computer-readable storage media, which may be non-transitory. The memory 902 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices.

Optionally, the display device 900 may further optionally include: a peripheral interface 903 and at least one peripheral. The processor 901, memory 902, and peripheral interface 903 may be connected by buses or signal lines. Each peripheral may be connected to the peripheral interface 903 by a bus, signal line, or circuit board. Specifically, the peripheral device includes: at least one of a radio frequency circuit 904, a display screen 905, a camera assembly 906, an audio circuit 907, a positioning assembly 908, and a power supply 909.

The peripheral interface 903 may be used to connect at least one peripheral related to I/O (Input/Output) to the processor 901 and the memory 902. Alternatively, the processor 901, memory 902 and peripheral interface 903 are integrated on the same chip or circuit board; alternatively, any one or two of the processor 901, the memory 902 and the peripheral device interface 903 may be implemented on a separate chip or circuit board, which is not limited in this embodiment of the application.

The Radio Frequency circuit 904 is used for receiving and transmitting RF (Radio Frequency) signals, also called electromagnetic signals. The radio frequency circuitry 904 communicates with communication networks and other communication devices via electromagnetic signals. The radio frequency circuit 904 converts an electrical signal into an electromagnetic signal to transmit, or converts a received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 904 comprises: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a subscriber identity module card, and so forth. The radio frequency circuit 904 may communicate with other terminals via at least one wireless communication protocol. The wireless communication protocols include, but are not limited to: the world wide web, metropolitan area networks, intranets, generations of mobile communication networks (2G, 3G, 4G, and 5G), wireless local area networks, and/or WiFi (Wireless Fidelity) networks. Optionally, the radio frequency circuit 904 may further include NFC (Near Field Communication) related circuits, which are not limited in this application.

The display screen 905 is used to display a UI (User Interface). The UI may include graphics, text, icons, video, and any combination thereof. When the display screen 905 is a touch display screen, the display screen 905 also has the ability to capture touch signals on or over the surface of the display screen 905. The touch signal may be input to the processor 901 as a control signal for processing. At this point, the display 905 may also be used to provide virtual buttons and/or a virtual keyboard, also referred to as soft buttons and/or a soft keyboard. Alternatively, the display screen 905 may be one, and is disposed on the front panel of the display device 900; alternatively, the number of the display panels 905 may be at least two, and the at least two display panels are respectively disposed on different surfaces of the display device 900 or are in a folding design; alternatively, the display 905 may be a flexible display, disposed on a curved surface or on a folded surface of the display device 900. Even more, the display screen 905 may be arranged in a non-rectangular irregular figure, i.e. a shaped screen. The Display screen 905 may be made of LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode), AMOLED (active matrix Organic Light-Emitting Diode), or the like.

Optionally, the display panel 905 includes a display driver chip, and the display driver chip is configured to execute the display control method described above.

The camera assembly 906 is used to capture images or video. Optionally, camera assembly 906 includes a front camera and a rear camera. Generally, a front camera is disposed at a front panel of the terminal, and a rear camera is disposed at a rear surface of the terminal. Optionally, the number of the rear cameras is at least two, and the rear cameras are any one of a main camera, a depth-of-field camera, a wide-angle camera and a telephoto camera, so that the main camera and the depth-of-field camera are fused to realize a background blurring function, the main camera and the wide-angle camera are fused to realize panoramic shooting and a VR (Virtual Reality) shooting function or other fusion shooting functions. Optionally, camera head assembly 906 may also include a flash. The flash lamp can be a monochrome temperature flash lamp or a bicolor temperature flash lamp. The double-color-temperature flash lamp is a combination of a warm-light flash lamp and a cold-light flash lamp, and can be used for light compensation at different color temperatures.

Audio circuit 907 may include a microphone and a speaker. The microphone is used for collecting sound waves of a user and the environment, converting the sound waves into electric signals, and inputting the electric signals to the processor 901 for processing, or inputting the electric signals to the radio frequency circuit 904 for realizing voice communication. The microphones may be provided in plural numbers, respectively, at different portions of the display apparatus 900 for the purpose of stereo sound collection or noise reduction. The microphone may also be an array microphone or an omni-directional pick-up microphone. The speaker is used to convert electrical signals from the processor 901 or the radio frequency circuit 904 into sound waves. The loudspeaker can be a traditional film loudspeaker and can also be a piezoelectric ceramic loudspeaker. When the speaker is a piezoelectric ceramic speaker, the speaker can be used for purposes such as converting an electric signal into a sound wave audible to a human being, or converting an electric signal into a sound wave inaudible to a human being to measure a distance. Optionally, audio circuit 907 may also include a headphone jack.

The positioning component 908 is used to position the current geographic Location of the display device 900 to implement navigation or LBS (Location Based Service). The Positioning component 908 may be a Positioning component based on the Global Positioning System (GPS) in the united states, the beidou System in china, or the galileo System in russia.

The power supply 909 is used to supply power to each component in the display apparatus 900. The power source 909 may be alternating current, direct current, disposable or rechargeable. When the power source 909 includes a rechargeable battery, the rechargeable battery may be a wired rechargeable battery or a wireless rechargeable battery. The wired rechargeable battery is a battery charged through a wired line, and the wireless rechargeable battery is a battery charged through a wireless coil. The rechargeable battery may also be used to support fast charge technology.

Optionally, the display device 900 also includes one or more sensors 910. The one or more sensors 910 include, but are not limited to: an acceleration sensor 911, a gyro sensor 912, a pressure sensor 913, a fingerprint sensor 914, an optical sensor 915, and a proximity sensor 916.

The acceleration sensor 911 may detect the magnitude of acceleration in three coordinate axes of a coordinate system established with the display apparatus 900. For example, the acceleration sensor 911 may be used to detect the components of the gravitational acceleration in three coordinate axes. The processor 901 can control the display screen 905 to display the user interface in a landscape view or a portrait view according to the gravitational acceleration signal collected by the acceleration sensor 911. The acceleration sensor 911 may also be used for acquisition of motion data of a game or a user.

The gyro sensor 912 may detect a body direction and a rotation angle of the display device 900, and the gyro sensor 912 may cooperate with the acceleration sensor 911 to acquire a 3D motion of the user with respect to the display device 900. Based on the data collected by gyroscope sensor 912, processor 901 may implement the following functions: motion sensing (such as changing the UI according to a user's tilting operation), image stabilization at the time of photographing, game control, and inertial navigation.

The pressure sensor 913 may be disposed in a side bezel of the display device 900 and/or underneath the display screen 905. When the pressure sensor 913 is disposed on the side frame of the display device 900, the holding signal of the user to the display device 900 may be detected, and the processor 901 performs left-right hand recognition or shortcut operation according to the holding signal collected by the pressure sensor 913. When the pressure sensor 913 is disposed at a lower layer of the display screen 905, the processor 901 controls the operability control on the UI interface according to the pressure operation of the user on the display screen 905. The operability control comprises at least one of a button control, a scroll bar control, an icon control, and a menu control.

The fingerprint sensor 914 is used for collecting a fingerprint of the user, and the processor 901 identifies the user according to the fingerprint collected by the fingerprint sensor 914, or the fingerprint sensor 914 identifies the user according to the collected fingerprint. Upon identifying that the user's identity is a trusted identity, processor 901 authorizes the user to perform relevant sensitive operations including unlocking the screen, viewing encrypted information, downloading software, paying, and changing settings, etc. The fingerprint sensor 914 may be disposed on the front, back, or side of the display device 900. When a physical key or vendor Logo is provided on the display device 900, the fingerprint sensor 914 may be integrated with the physical key or vendor Logo.

The optical sensor 915 is used to collect ambient light intensity. In one embodiment, the processor 901 may control the display brightness of the display screen 905 based on the ambient light intensity collected by the optical sensor 915. Specifically, when the ambient light intensity is high, the display brightness of the display screen 905 is increased; when the ambient light intensity is low, the display brightness of the display screen 905 is reduced. In another embodiment, the processor 901 can also dynamically adjust the shooting parameters of the camera assembly 906 according to the ambient light intensity collected by the optical sensor 915.

A proximity sensor 916, also referred to as a distance sensor, is typically provided on the front panel of the display device 900. The proximity sensor 916 is used to collect the distance between the user and the front of the display device 900. In one embodiment, when the proximity sensor 916 detects that the distance between the user and the front surface of the display device 900 is gradually decreased, the display screen 905 is controlled by the processor 901 to switch from the bright screen state to the dark screen state; when the proximity sensor 916 detects that the distance between the user and the front surface of the display device 900 gradually becomes larger, the display screen 905 is controlled by the processor 901 to switch from the breath screen state to the bright screen state.

Those skilled in the art will appreciate that the configuration shown in FIG. 9 does not constitute a limitation of display device 900, and may include more or fewer components than shown, or combine certain components, or employ a different arrangement of components.

In addition, an embodiment of the present application further provides a computer-readable storage medium, where instructions are stored in the storage medium, and the instructions are loaded and executed by a display driver chip to implement the above display control method.

In addition, an embodiment of the present application further provides a computer program product or a computer program, where the computer program product includes computer instructions, and the instructions are loaded and executed by the display driver chip to implement the above-mentioned display control method.

It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.

The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A display control method is characterized in that the method is used for a display driving chip of a display screen, and comprises the following steps:

2. The method of claim 1, further comprising:

outputting a first tearing effect TE signal corresponding to the first display subarea and a second TE signal corresponding to the second display subarea to the control unit respectively;

3. The method of claim 1, wherein the target application scene comprises a game scene, a video playback scene, or a swipe scene with a swipe speed greater than a speed threshold;

in response to the display screen being currently in a portrait screen orientation, dividing the display area laterally into the first display partition and the second display partition;

4. The method of claim 1, wherein controlling the first display partition to display images at a first refresh rate and controlling the second display partition to display images at a second refresh rate comprises:

5. The method according to any one of claims 1 to 4, wherein for any one of the first display partition and the second display partition, the pixel units in the display partition comprise a pixel compensation circuit which inputs an initial voltage signal via an initial voltage signal line and controls a light emitting device of the pixel compensation circuit to reset by the initial voltage signal;

the method further comprises the following steps:

6. The method according to any one of claims 1 to 4, wherein for any one of the first display section and the second display section, the pixel units in the display section include a pixel compensation circuit which inputs a light emission control signal via a light emission control signal line and controls a light emitting device of the pixel compensation circuit to emit light by the light emission control signal;

the method further comprises the following steps:

7. The method according to any one of claims 1 to 4, further comprising:

before controlling the second display subarea to display the next frame of picture, adding at least one frame of transition picture for displaying;

the target display condition includes that a luminance difference between the first display partition and the second display partition is less than a luminance threshold value, and a chrominance difference is less than a chrominance threshold value.

8. A display driving chip, wherein the display driving chip is configured to:

9. The display driver chip of claim 8, wherein the display driver chip is further configured to:

10. The display driver chip according to claim 8 or 9, wherein for any one of the first display section and the second display section, the pixel units in the display section include a pixel compensation circuit that inputs an initial voltage signal via an initial voltage signal line and controls a light emitting device of the pixel compensation circuit to be reset by the initial voltage signal;

the display driving chip is further configured to:

respectively inputting initial voltage signals with different voltage values to corresponding pixel compensation circuits through initial voltage signal lines corresponding to pixel units in different display partitions;

11. The display driver chip according to claim 8 or 9, wherein for any one of the first display section and the second display section, the pixel units in the display section include a pixel compensation circuit which inputs a light emission control signal via a light emission control signal line and controls light emission of a light emitting device of the pixel compensation circuit by the light emission control signal;

the display driving chip is further configured to:

12. The display driver chip according to claim 8 or 9, wherein the display driver chip is further configured to:

13. A display device, characterized in that the display device comprises: the display control device comprises a display screen and a control unit which is electrically connected with a display driving chip of the display screen, wherein the display driving chip is used for executing the display control method according to any one of claims 1 to 7.

14. A computer-readable storage medium having instructions stored therein, the instructions being loaded and executed by a display driver chip to implement the display control method according to any one of claims 1 to 7.

15. A computer program product or computer program, characterised in that the computer program product comprises computer instructions which are loaded and executed by a display driver chip to implement a display control method according to any one of claims 1 to 7.