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

Abstract

The present application discloses a display control method, a display driver chip, a device and a storage medium, which belong to the field of display technology. In the present application, in response to receiving a partition control instruction, the display driver chip of the display screen will partition the entire display area of the display screen into a first display partition and a second display partition, and control the two display partitions to display images at different refresh rates, such as the first display partition is driven at a high refresh rate and the second display partition is driven at a low refresh rate. This display control method takes into account the requirements of specific application scenarios for high refresh rates and also reduces the power consumption of the display screen through low refresh rates. In addition, the embodiment of the present application also limits the partition mode of the display screen to be started in a specific application scenario, which increases the flexibility of display control.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display control method, a display driver chip, a device, and a storage medium. Background Art

[0002] Active-matrix organic light-emitting diode (AMOLED) displays are increasingly being used in electronic products such as smartphones. AMOLED displays offer advantages such as fast response time, excellent display quality, and low power consumption.

[0003] However, with the rapid development of display technology, the refresh rate of AMOLED displays is moving towards higher and higher directions to achieve smoother image quality. Accordingly, the entire display area of an AMOLED display usually displays images at a high refresh rate (such as 120Hz), which makes the power consumption of the driver integrated circuit (DIC) of the AMOLED display increasingly high. Therefore, there is an urgent need for a display control method that can balance the refresh rate requirements and maximize the power consumption advantages of AMOLED displays. Summary of the Invention

[0004] The embodiments of the present application provide a display control method, a display driver chip, a device, and a storage medium that can balance refresh rate requirements and reduce power consumption. The technical solution is as follows:

[0005] In one aspect, a display control method is provided for a display driver chip of a display screen, the method comprising:

[0006] receiving a partition control instruction issued by a control unit electrically connected to the display driver chip; wherein the partition control instruction is issued by the control unit after determining that the current application scenario type of the display screen is a target application scenario;

[0007] Based on the partition control instruction, the display area of the display screen is divided into a first display partition and a second display partition;

[0008] The first display partition is controlled to display images at a first refresh rate, and the second display partition is controlled to display images at a second refresh rate; the second refresh rate is lower than the first refresh rate.

[0009] Optionally, the method further includes:

[0010] 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;

[0011] 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.

[0012] Optionally, the target application scenario includes a game scenario, a video playback scenario, or a sliding scenario where the sliding speed is greater than a speed threshold;

[0013] The step of dividing the display area of the display screen into a first display partition and a second display partition comprises:

[0014] In response to the display screen currently being in a landscape orientation, vertically dividing the display area into the first display partition and the second display partition;

[0015] In response to the display screen currently being in a portrait orientation, dividing the display area horizontally into the first display partition and the second display partition;

[0016] The first display partition is larger than the second display partition.

[0017] Optionally, 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, includes:

[0018] The first display partition is controlled to display dynamic images at the first refresh rate, and the second display partition is controlled to display static images at the second refresh rate.

[0019] Optionally, for any one of the first display partition and the second display partition, a pixel unit in the display partition includes a pixel compensation circuit, the pixel compensation circuit inputs an initial voltage signal via an initial voltage signal line, and controls the reset of a light-emitting device of the pixel compensation circuit by the initial voltage signal; and the method further includes:

[0020] 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;

[0021] Wherein, the initial voltage signals having different voltage values are determined based on target display conditions;

[0022] The target display condition includes that a brightness difference between the first display partition and the second display partition is smaller than a brightness threshold, and a chromaticity difference is smaller than a chromaticity threshold.

[0023] Optionally, for any one of the first display partition and the second display partition, a pixel unit in the display partition includes a pixel compensation circuit, the pixel compensation circuit inputs a light emitting control signal via a light emitting control signal line, and controls a light emitting device of the pixel compensation circuit to emit light according to the light emitting control signal; the method further includes:

[0024] Through the light-emitting control signal lines corresponding to the pixel units in different display partitions, light-emitting control signals with different light-emitting time proportions are input to the corresponding pixel compensation circuits respectively;

[0025] The light control signals with different light emitting time proportions are determined based on target display conditions;

[0026] The target display condition includes that a brightness difference between the first display partition and the second display partition is smaller than a brightness threshold, and a chromaticity difference is smaller than a chromaticity threshold.

[0027] Optionally, the method further includes:

[0028] Before controlling the second display partition to display the next frame of the picture, adding at least one transition picture frame for display;

[0029] The number of frames of the transition picture is determined based on the target display condition;

[0030] The target display condition includes that a brightness difference between the first display partition and the second display partition is smaller than a brightness threshold, and a chromaticity difference is smaller than a chromaticity threshold.

[0031] In another aspect, a display driver chip is provided, wherein the display driver chip is configured to:

[0032] receiving a partition control instruction issued by a control unit electrically connected to the display driver chip; wherein the partition control instruction is issued by the control unit after determining that the current application scenario type of the display screen is a target application scenario;

[0033] Based on the partition control instruction, the display area of the display screen is divided into a first display partition and a second display partition;

[0034] The first display partition is controlled to display images at a first refresh rate, and the second display partition is controlled to display images at a second refresh rate; the second refresh rate is lower than the first refresh rate.

[0035] Optionally, the display driver chip is further used to:

[0036] outputting a first TE signal corresponding to the first display partition and a second TE signal corresponding to the second display partition to the control unit respectively;

[0037] 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.

[0038] Optionally, the target application scenario includes a game scenario, a video playback scenario, or a sliding scenario where the sliding speed is greater than a speed threshold; and the display driver chip is configured to:

[0039] In response to the display screen currently being in a landscape orientation, vertically dividing the display area into the first display partition and the second display partition;

[0040] In response to the display screen currently being in a portrait orientation, dividing the display area horizontally into the first display partition and the second display partition;

[0041] The first display partition is larger than the second display partition.

[0042] Optionally, the display driver chip is used to:

[0043] The first display partition is controlled to display dynamic images at the first refresh rate, and the second display partition is controlled to display static images at the second refresh rate.

[0044] Optionally, for any one of the first display partition and the second display partition, a pixel unit in the display partition includes a pixel compensation circuit, the pixel compensation circuit inputs an initial voltage signal via an initial voltage signal line, and controls the reset of a light-emitting device of the pixel compensation circuit by the initial voltage signal; and the display driver chip is further configured to:

[0045] 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;

[0046] Wherein, the initial voltage signals having different voltage values are determined based on target display conditions;

[0047] The target display condition includes that a brightness difference between the first display partition and the second display partition is smaller than a brightness threshold, and a chromaticity difference is smaller than a chromaticity threshold.

[0048] Optionally, for any one of the first display partition and the second display partition, a pixel unit in the display partition includes a pixel compensation circuit, the pixel compensation circuit inputs a light-emitting control signal via a light-emitting control signal line, and controls the light-emitting device of the pixel compensation circuit to emit light according to the light-emitting control signal; and the display driver chip is further configured to:

[0049] Through the light-emitting control signal lines corresponding to the pixel units in different display partitions, light-emitting control signals with different light-emitting time proportions are input to the corresponding pixel compensation circuits respectively;

[0050] The light control signals with different light emitting time proportions are determined based on target display conditions;

[0051] The target display condition includes that a brightness difference between the first display partition and the second display partition is smaller than a brightness threshold, and a chromaticity difference is smaller than a chromaticity threshold.

[0052] Optionally, the display driver chip is further used to:

[0053] Before controlling the second display partition to display the next frame of the picture, adding at least one transition picture frame for display;

[0054] The number of frames of the transition picture is determined based on the target display condition;

[0055] The target display condition includes that a brightness difference between the first display partition and the second display partition is smaller than a brightness threshold, and a chromaticity difference is smaller than a chromaticity threshold.

[0056] On the other hand, a display device is provided, comprising: a display screen and a control unit electrically connected to a display driver chip of the display screen, wherein the display driver chip is configured to execute the above-mentioned display control method.

[0057] On the other hand, a computer-readable storage medium is provided, wherein instructions are stored in the storage medium, and the instructions are loaded and executed by a display driver chip to implement the above-mentioned display control method.

[0058] On the other hand, a computer program product or a computer program is provided. The computer program product includes computer instructions, and the instructions are loaded and executed by a display driver chip to implement the above display control method.

[0059] In an embodiment of the present application, in response to receiving a partition control instruction issued by a control unit of a display device, the display driver chip of the 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 images at different refresh rates, such as driving the first display partition at a high refresh rate and the second display partition at a low refresh rate. This display control method not only takes into account the high refresh rate requirements of specific application scenarios, but also reduces the power consumption of the display screen through the low refresh rate. In addition, the embodiment of the present application limits the partition mode of the display screen to be activated in specific application scenarios, which increases the flexibility of display control. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0061] Figure 1 This is a schematic diagram of the corresponding display area and refresh rate in the related art;

[0062] Figure 2 This is a flow chart of a display control solution provided in an embodiment of the present application;

[0063] Figure 3 is a structural schematic diagram of a display device provided in an embodiment of the present application;

[0064] Figure 4 is a flow chart of a display control method provided by an embodiment of the present application;

[0065] Figure 5 This is a schematic diagram of the correspondence between a display area and a refresh rate provided in an embodiment of the present application;

[0066] Figure 6 This is a schematic structural diagram of a pixel compensation circuit provided in an embodiment of the present application;

[0067] Figure 7 This is a schematic diagram of EM timing corresponding to different display partitions provided in an embodiment of the present application;

[0068] Figure 8 This is a refresh schematic diagram corresponding to different display partitions provided in an embodiment of the present application;

[0069] Figure 9 It is a structural schematic diagram of another display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0070] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0071] In this application, the terms "first," "second," and the like are used to distinguish identical or similar items having substantially the same role and function. It should be understood that "first," "second," and "nth" do not have a logical or temporal dependency, nor do they limit the quantity or execution order. It should also be understood that although the following description uses the terms "first," "second," and the like to describe various elements, these elements should not be limited by these terms.

[0072] These terms are simply used to distinguish one element from another. For example, a first element can be referred to as a second element, and similarly, a second element can be referred to as a first element, without departing from the scope of various examples. Both the first element and the second element can be elements, and in some cases, can be separate and different elements.

[0073] Here, at least one refers to one or more than one. For example, at least one element can be one element, two elements, three elements, or any other integer greater than or equal to one. And multiple refers to two or more than two. For example, multiple elements can be two elements, three elements, or any other integer greater than or equal to two.

[0074] The term "and / or" used in this document indicates that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0075] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data used for analysis, stored data, displayed data, etc.) and signals involved in this application are all authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of relevant countries and regions.

[0076] As mentioned above, in order to obtain smoother image quality, the refresh rate of AMOLED displays is getting higher and higher, which makes the power consumption of DIC (also known as display driver chip) of AMOLED displays higher and higher. Figure 1 Under normal display conditions, the entire display area of an AMOLED display displays images at the same refresh rate (Frequency 1). Assuming Frequency 1 is a high refresh rate of 120Hz, the AMOLED display will consume a lot of power. Therefore, it is urgent to maximize the power consumption advantages of AMOLED displays while taking into account the refresh rate requirements.

[0077] To this end, the embodiment of the present application proposes a solution for partitioning the entire display area of the display screen and controlling different display partitions to display images at different refresh rates. For example, a specific area is controlled to display images at a high refresh rate (such as 120Hz), while other areas except the specific area are displayed at a low refresh rate (such as 60Hz, 30Hz, 10Hz, 1Hz). In this way, a display screen corresponds to two refresh rates, and there must be certain brightness differences and chromaticity differences at the dividing lines of different display partitions.

[0078] To address these differences in brightness and chromaticity, the present embodiment also proposes an effective solution to ensure a smooth transition of brightness and chromaticity at the dividing line. In other words, the present embodiment not only achieves different refresh rates for different areas of the same screen, but also ensures that there are no differences in brightness and chromaticity at the dividing line between different display partitions, allowing for a smooth transition of brightness and chromaticity between the aforementioned specific areas and other areas, thereby ensuring that there are no noticeable differences in the screen display after the display enters partition mode, ensuring the display effect.

[0079] The display control solution provided by the embodiment of the present application is described in detail below through the following implementation methods.

[0080] See also Figure 2 The display control solution provided in the embodiment of the present application is used for a display device 200. The display device 200 includes a control unit 201 (corresponding to Figure 3 The display screen 202 includes a display driver chip 203 (corresponding to a display driver chip 203) electrically connected to the control unit 201. Figure 3 Optionally, the display screen mentioned in the embodiment of the present application is an AMOLED display screen.

[0081] In the embodiments of this application, Figure 3 As shown, the whole machine is responsible for sending the partitioning instruction to DIC; if the instruction is a partition control instruction, the DIC controls the entire display area of the display screen to enter the partition mode, that is, the entire display area is partitioned, and controls different display partitions to display images at different refresh rates. If the control instruction is not a partition control instruction, the display screen will be displayed according to Figure 1 The normal display is shown, that is, the entire display area displays images at the same refresh rate.

[0082] In other words, partition mode requires commands from the entire device to constrain the screen display. If partition mode is required, the device sends the corresponding command to the DIC. Upon receiving the command, the DIC controls the entire display area for partitioned display. If partition mode is not required, the screen will be displayed at the normal refresh rate.

[0083] Based on the above description, the embodiment of the present application provides a display control method, which is used for a display driver chip of a display screen. Figure 4 , the method comprising:

[0084] 401. Receive a partition control instruction issued by a control unit electrically connected to a display driver chip.

[0085] In the embodiment of the present application, the control unit is responsible for sending an instruction to the DIC on whether to partition; if the instruction is a partition control instruction, the DIC controls the entire display area of the display screen to enter the partition mode.

[0086] Optionally, the partition control instruction is issued by the control unit after determining that the current application scenario type of the display screen is a target application scenario. For example, the embodiment of the present application is used with a specific application to limit a specific area as an area using a high refresh rate, and other areas except the specific area are areas using a low refresh rate. Since the scenes with high refresh rate requirements are usually game scenes and video playback scenes, the above-mentioned specific application can be a game application or a video application. In addition, for scenes involving fast sliding switching such as switching between different screens of the desktop and browsing albums, high refresh rate requirements may also be involved. Therefore, the above-mentioned target application scenarios include but are not limited to: game scenes, video playback scenes, or sliding scenes with a sliding speed greater than a speed threshold, which are not limited in this application.

[0087] 402. Based on the partition control instruction, divide the display area of the display screen into a first display partition and a second display partition.

[0088] Optionally, in response to the display screen currently being in a landscape orientation, the entire display area of the display screen is vertically divided into a first display partition and a second display partition; or, in response to the display screen currently being in a portrait orientation, the entire display area of the display screen is horizontally divided into a first display partition and a second display partition. Figure 5 The two display partitions shown.

[0089] In other words, Figure 5 The entire display area of the display is divided into two parts, namely the first display partition (partition 1) and the second display partition (partition 2). The area of the first display partition is larger than the area of the second display partition. By using different timing signals to drive the two display partitions, different refresh rates can be achieved for different display partitions.

[0090] 403. Control the first display partition to display images at a first refresh rate, and control the second display partition to display images at a second refresh rate; wherein the second refresh rate is lower than the first refresh rate.

[0091] Optionally, the first display partition is controlled to display dynamic images at a first refresh rate, and the second display partition is controlled to display static images at a second refresh rate.

[0092] In the embodiment of this application, based on Figure 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, and the second display partition corresponding to the second refresh rate (frequency 2) is a low refresh rate area. The DIC outputs different TE signals for the two display partitions. The TE signal output by the DIC is used to instruct the control unit to transmit image data to the DIC.

[0093] in, Figure 5 The TE1 timing waveform shown corresponds to the TE signal output by the DIC for the first display subarea, while the TE2 timing waveform corresponds to the TE signal output by the DIC for the second display subarea. Furthermore, the blanking area (porch area) of the TE1 timing waveform is designed within the active display area of the TE2 timing waveform, and vice versa. This eliminates a clear dividing line between the two display subareas.

[0094] In other words, in the process of controlling the partition 1 to display the image at frequency 1 and the partition 2 to display the image at frequency 2, the method further includes: the DIC outputs the first TE signal ( Figure 5 TE1 timing waveform in the middle) and the second TE signal corresponding to the second display partition ( Figure 5 TE2 timing waveform in the middle); wherein, 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.

[0095] In an embodiment of the present application, in response to receiving a partition control instruction issued by a control unit of a display device, the DIC chip of the 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 images at different refresh rates, such as driving the first display partition at a high refresh rate and the second display partition at a low refresh rate. This display control method not only takes into account the high refresh rate requirements of specific application scenarios, but also reduces the power consumption of the display screen by using a low refresh rate. In addition, the embodiment of the present application limits the activation of the partition mode of the display screen to specific application scenarios, increasing the flexibility of display control.

[0096] The above describes in detail the different refresh rates of different display partitions. The following describes in detail how to achieve a smooth transition of brightness and chromaticity at the boundary between different display partitions.

[0097] Optionally, to ensure that there are no differences in brightness or chromaticity at the boundaries between different display partitions, while controlling partition 1 to display images at frequency 1 and partition 2 to display images at frequency 2, embodiments of the present application further achieve consistent brightness and chromaticity between the different display partitions by setting different vinit2 voltages, inputting different EM timing waveforms, and providing different refresh modes for the two display partitions. The following describes these three solutions in detail.

[0098] Solution 1: Set different vinit2 voltages.

[0099] In the embodiment of the present application, different vinit2 voltages are set for partition 1 and partition 2. This solution is adopted because, through analysis of the pixel compensation circuit, different vinit2 voltage settings can produce different display effects. Therefore, by adjusting the vinit2 voltages of partition 1 and partition 2, the brightness and chromaticity of the two partitions can be adjusted, ultimately ensuring a smooth transition of brightness and chromaticity at the boundary between the two display partitions.

[0100] Taking the vinit2 voltage corresponding to partition 1 as vinit2_partition1 and the vinit2 voltage corresponding to partition 2 as vinit2_partition2 as an example, the DIC controls vinit2_partition1 and vinit2_partition2 separately. When it is necessary to control the display screen to enter partition mode, corresponding values are assigned to vinit2_partition1 and vinit2_partition2 respectively. Through such settings, the brightness difference between partition 1 and partition 2 can be made less than the brightness threshold, and the chromaticity difference can be made less than the chromaticity threshold, thereby achieving a smooth transition of brightness and chromaticity.

[0101] Optionally, the brightness threshold is 2% and the chromaticity threshold is 1 JNCD, which is not limited in this application. JNCD is the smallest unit that the human eye can distinguish color changes, and this unit is called 1 JNCD. Generally, the smaller the JNCD value, the more accurate the color display of the screen.

[0102] Optionally, for any display partition in partition 1 and partition 2, the pixel units in the display partition include Figure 6 The pixel compensation circuit shown in FIG. exemplarily, the pixel compensation circuit is a 7T1C circuit, wherein V DD is the positive voltage of the power supply, V SSis the power supply negative voltage, Gate is the scanning signal line, vinit1 is the first initial voltage signal line, vinit2 is the second initial voltage signal line, EM is the light emitting control signal line, Reset is the reset control signal line, Vdata is the data voltage, and Cst is the capacitor. After the initial voltage signal is input through the initial voltage signal line (herein referred to as vinit2), the light emitting device of the pixel compensation circuit is controlled by the input initial voltage signal ( Figure 6 OLED in the reset.

[0103] Based on the above description, the method also includes: inputting initial voltage signals with different voltage values into corresponding pixel compensation circuits through initial voltage signal lines (here referred to as vinit2) corresponding to pixel units in different display partitions; wherein the above-mentioned initial voltage signals with different voltage values are determined based on target display conditions; the target display conditions include that the brightness difference between the first display partition and the second display partition is less than the above-mentioned brightness threshold, and the chromaticity difference is less than the above-mentioned chromaticity threshold.

[0104] Optionally, the voltage values of vinit2 corresponding to different display partitions may be determined in the following manner.

[0105] For example, first assign values to vinit2_partition1 and vinit2_partition2, and then test the brightness and chromaticity of partition 1 and partition 2 respectively. If the brightness difference and chromaticity difference between partition 1 and partition 2 do not meet the above target conditions, then continue to assign values to vinit2_partition1 and vinit2_partition2 until the brightness difference between the two is less than 2% and the chromaticity difference is within 1JNCD.

[0106] In other words, this assignment + test scheme is: after inputting the initial voltage signals to the corresponding pixel compensation circuits through the initial voltage signal lines corresponding to different display partitions, the brightness differences and chromaticity differences between different display partitions are tested; in response to the tested brightness differences and chromaticity differences not meeting the target display conditions, after updating the voltage value of the initial voltage signal, the step of inputting the initial voltage signals to the pixel compensation circuits corresponding to different display partitions is continued until the tested brightness differences and chromaticity differences meet the target display conditions; the initial voltage signal corresponding to each display partition when the target display conditions are met is used as the above-mentioned initial voltage signal with different voltage values.

[0107] Solution 2: Input different EM timing waveforms.

[0108] To minimize the display difference between the two display partitions, different EM signals can be input. This solution is adopted because AMOLED is a current device. Therefore, by adjusting the emission duty (EM duty) of the EM timing waveform corresponding to the two display partitions, the brightness and chromaticity of the two display partitions can be adjusted, ultimately achieving a smooth brightness and chromaticity transition at the dividing line between the two display partitions.

[0109] In other words, for this solution, the DIC needs to output two different EM timing waveforms to drive the two display partitions for display. The DIC can assign Gout1 (used to output the EM timing waveform for partition 1) to partition 1 and Gout2 (used to output the EM timing waveform for partition 2) to partition 2. By designing the EMGOA (Gate On Array) for these two display partitions differently, consistent brightness and color can be achieved across the different display partitions.

[0110] Optionally, for any display partition in partition 1 and partition 2, the pixel units in the display partition include: Figure 6 Pixel compensation circuit shown. Exemplarily, the pixel compensation circuit is a 7T1C circuit, such as Figure 6 As shown, after the light emitting control signal is inputted via the light emitting control signal line EM, the pixel compensation circuit controls the light emitting device of the pixel compensation circuit to emit light according to the input light emitting control signal.

[0111] Based on the above description, the method further includes: inputting the following signals to the corresponding pixel compensation circuits through the light emitting control signal lines corresponding to the pixel units in different display partitions: Figure 7 The luminous control signals with different EM duties (corresponding to duty 1 and duty 2) are shown; wherein the luminous control signals with different EM duties are determined based on target display conditions. The target display conditions include that the brightness difference between the first display partition and the second display partition is less than a brightness threshold, and the chromaticity difference is less than a chromaticity threshold.

[0112] Solution 3: Provide different refresh methods.

[0113] For Low Temperature Polycrystalline Oxide (LTPO) products, due to the presence of Indium Gallium Zinc Oxide (IGZO), the leakage current will be relatively small, so the refresh rate of partition 2 can be set to 10Hz or 1Hz, etc. However, due to the hysteresis effect of Thin Film Transistor (TFT), if the refresh rate is set too low, the hysteresis effect of TFT will be more serious, thereby aggravating the brightness difference and chromaticity difference at the boundary of different display partitions, thereby affecting the display effect. To this end, the embodiment of the present application proposes a new refresh method, namely Figure 8 The pseudo refresh shown is used to improve the final display effect.

[0114] like Figure 8 As shown in the figure, assuming that partition 1 displays images at a refresh rate of 120Hz and partition 2 displays images at a refresh rate of 1Hz, partition 1 can refresh 120 times per second, while partition 2 refreshes only once per second. Compared with partition 1, partition 2 refreshes one frame per second and stops for 119 frames. In order to improve the phenomenon that the hysteresis effect caused by the use of a low refresh rate is more serious, thereby aggravating the brightness and color differences at the boundaries of different display partitions, see Figure 8 , a transition picture frame with a higher refresh rate can be inserted at a low refresh rate. Based on the above description, the method also includes: before controlling the second display partition to display the next frame, adding at least one transition picture frame for display; wherein the number of transition picture frames is determined based on the target display conditions; the target display conditions include the brightness difference between the first display partition and the second display partition being less than a brightness threshold, and the chromaticity difference being less than a chromaticity threshold. Optionally, the transition picture can be a copy of the current frame, which is not limited in this application.

[0115] The embodiments of the present application can solve the problem of certain brightness differences and chromaticity differences at the boundaries of different display partitions based on multiple solutions, and the processing methods are relatively flexible and diverse.

[0116] The embodiment of the present application provides a display driver chip. The display driver chip is used to:

[0117] Receive a partition control instruction issued by a control unit electrically connected to the display driver chip; wherein the partition control instruction is issued by the control unit after determining that the current application scenario type of the display screen is a target application scenario; based on the partition control instruction, divide the display area of the display screen into a first display partition and a second display partition; control the first display partition to display the screen at a first refresh rate, and control the second display partition to display the screen at a second refresh rate; the second refresh rate is less than the first refresh rate.

[0118] In an embodiment of the present application, in response to receiving a partition control instruction issued by a control unit of a display device, the DIC chip of the 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 images at different refresh rates, such as driving the first display partition at a high refresh rate and the second display partition at a low refresh rate. This display control method not only takes into account the high refresh rate requirements of specific application scenarios, but also reduces the power consumption of the display screen by using a low refresh rate. In addition, the embodiment of the present application limits the activation of the partition mode of the display screen to specific application scenarios, increasing the flexibility of display control.

[0119] Optionally, the display driver chip is further used to:

[0120] The first TE signal corresponding to the first display partition and the second TE signal corresponding to the second display partition are output to the control unit respectively; wherein 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.

[0121] Optionally, the target application scenario includes a game scenario, a video playback scenario, or a sliding scenario where the sliding speed is greater than a speed threshold; the display driver chip is used to:

[0122] In response to the display screen currently being in a horizontal screen posture, the display area is vertically divided into a first display partition and a second display partition; in response to the display screen currently being in a vertical screen posture, the display area is horizontally divided into a first display partition and a second display partition; wherein the first display partition is larger than the second display partition.

[0123] Optionally, the display driver chip is used to:

[0124] The first display partition is controlled to display dynamic images at a first refresh rate, and the second display partition is controlled to display static images at a second refresh rate.

[0125] Optionally, for any display partition, the pixel unit in the display partition includes a pixel compensation circuit, the pixel compensation circuit inputs an initial voltage signal via an initial voltage signal line, and controls the reset of the light-emitting device of the pixel compensation circuit by the initial voltage signal; the display driver chip is further used to:

[0126] Initial voltage signals with different voltage values are input into 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 target display conditions; the target display conditions include that the brightness difference between the first display partition and the second display partition is less than a brightness threshold, and the chromaticity difference is less than a chromaticity threshold.

[0127] Optionally, for any display partition, the pixel unit in the display partition includes a pixel compensation circuit, the pixel compensation circuit inputs a light-emitting control signal via a light-emitting control signal line, and controls the light-emitting device of the pixel compensation circuit to emit light through the light-emitting control signal; the display driver chip is further used to:

[0128] Through the light-emitting control signal lines corresponding to the pixel units in different display partitions, light-emitting control signals with different light-emitting time proportions are input to the corresponding pixel compensation circuits respectively; wherein, the light-emitting control signals with different light-emitting time proportions are determined based on the target display conditions.

[0129] Optionally, the display driver chip is further used to:

[0130] Before controlling the second display partition to display the next frame of the picture, at least one frame of transition picture is added for display; wherein the number of frames of the transition picture is determined based on the target display condition.

[0131] All the above optional technical solutions can be arbitrarily combined to form optional embodiments of the present disclosure, and will not be described in detail here.

[0132] Figure 9 FIG. 9 is a schematic diagram of another display device according to an embodiment of the present application.

[0133] The processor 901 may include one or more processing cores, such as a quad-core processor or an octa-core processor. The processor 901 may be implemented in at least one of the following hardware forms: a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), or a PLA (Programmable Logic Array). The processor 901 may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a CPU (Central Processing Unit); the coprocessor is a low-power processor for processing data in the standby state. Optionally, 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 on the display screen. Optionally, the processor 901 may also include an AI (Artificial Intelligence) processor, which is responsible for processing computing operations related to machine learning. Among them, the processor 901 serves as the core of the display device and is also called a control unit.

[0134] The memory 902 may include one or more computer-readable storage media, which may be non-transitory, and may also include high-speed random access memory and non-volatile memory, such as one or more magnetic disk storage devices and flash memory storage devices.

[0135] Optionally, the display device 900 further includes a peripheral device interface 903 and at least one peripheral device. The processor 901, memory 902, and peripheral device interface 903 may be connected via a bus or signal lines. Each peripheral device may be connected to the peripheral device interface 903 via a bus, signal lines, or circuit boards. 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.

[0136] The peripheral device interface 903 can be used to connect at least one I / O (Input / Output)-related peripheral device to the processor 901 and the memory 902. Optionally, the processor 901, the memory 902, and the peripheral device interface 903 are integrated on the same chip or circuit board; or, any one or two of the processor 901, the memory 902, and the peripheral device interface 903 can be implemented on separate chips or circuit boards, which is not limited in this embodiment of the present application.

[0137] The RF circuit 904 is used to receive and transmit RF (Radio Frequency) signals, also known as electromagnetic signals. The RF circuit 904 communicates with communication networks and other communication devices via electromagnetic signals. The RF circuit 904 converts electrical signals into electromagnetic signals for transmission, or converts received electromagnetic signals into electrical signals. Optionally, the RF circuit 904 includes an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a user identity module card, and the like. The RF circuit 904 can communicate with other terminals via at least one wireless communication protocol. Such wireless communication protocols include, but are not limited to, the World Wide Web, metropolitan area networks, intranets, various generations of mobile communication networks (2G, 3G, 4G, and 5G), wireless local area networks, and / or WiFi (Wireless Fidelity) networks. Optionally, the RF circuit 904 may also include circuitry related to Near Field Communication (NFC), which is not limited in this application.

[0138] Display screen 905 is used to display a user interface (UI). This UI may include graphics, text, icons, videos, or any combination thereof. When display screen 905 is a touch screen display, it is also capable of collecting touch signals on or above the surface of display screen 905. This touch signal can be input as a control signal to processor 901 for processing. In this case, display screen 905 can also be used to provide virtual buttons and / or a virtual keyboard, also known as soft buttons and / or a soft keyboard. Optionally, display screen 905 can be a single display screen, disposed on the front panel of display device 900; or, display screen 905 can be at least two, disposed on different surfaces of display device 900 or in a foldable design; or, display screen 905 can be a flexible display screen, disposed on a curved or foldable surface of display device 900. Display screen 905 can even be configured as a non-rectangular irregular shape, i.e., a special-shaped screen. Display screen 905 can be made of materials such as LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode), and AMOLED.

[0139] Optionally, the display screen 905 includes a display driver chip, and the display driver chip is used to execute the above display control method.

[0140] The camera assembly 906 is used to capture images or videos. Optionally, the camera assembly 906 includes a front camera and a rear camera. Typically, the front camera is set on the front panel of the terminal, and the rear camera is set on the back of the terminal. Optionally, there are at least two rear cameras, which are any one of a main camera, a depth of field camera, a wide-angle camera, and a telephoto camera, so as to realize the fusion of the main camera and the depth of field camera to realize the background blur function, the fusion of the main camera and the wide-angle camera to realize panoramic shooting and VR (Virtual Reality) shooting function or other fusion shooting functions. Optionally, the camera assembly 906 may also include a flash. The flash can be a single-color temperature flash or a dual-color temperature flash. A dual-color temperature flash refers to a combination of a warm light flash and a cold light flash, which can be used for light compensation at different color temperatures.

[0141] The audio circuit 907 may include a microphone and a speaker. The microphone is used to collect sound waves from the user and the environment, and convert the sound waves into electrical signals to be input into the processor 901 for processing, or input into the radio frequency circuit 904 to achieve voice communication. For the purpose of stereo sound collection or noise reduction, there can be multiple microphones, which are respectively arranged at different parts of the display device 900. The microphone can also be an array microphone or an omnidirectional collection microphone. The speaker is used to convert the electrical signal from the processor 901 or the radio frequency circuit 904 into sound waves. The speaker can be a traditional thin film speaker or a piezoelectric ceramic speaker. When the speaker is a piezoelectric ceramic speaker, it can not only convert the electrical signal into sound waves audible to humans, but also convert the electrical signal into sound waves inaudible to humans for purposes such as ranging. Optionally, the audio circuit 907 may also include a headphone jack.

[0142] Positioning component 908 is used to locate the current geographic location of display device 900 to implement navigation or LBS (Location Based Service). Positioning component 908 can be a positioning component based on the US GPS (Global Positioning System), China's Beidou system, or Russia's Galileo system.

[0143] The power supply 909 is used to power the various components in the display device 900. The power supply 909 can be AC power, DC power, a disposable battery, or a rechargeable battery. When the power supply 909 includes a rechargeable battery, the rechargeable battery can be a wired rechargeable battery or a wireless rechargeable battery. A wired rechargeable battery is a battery that is charged via a wired line, and a wireless rechargeable battery is a battery that is charged via a wireless coil. The rechargeable battery can also be used to support fast charging technology.

[0144] Optionally, the display device 900 further includes one or more sensors 910 . The one or more sensors 910 include, but are not limited to, an acceleration sensor 911 , a gyroscope sensor 912 , a pressure sensor 913 , a fingerprint sensor 914 , an optical sensor 915 , and a proximity sensor 916 .

[0145] The accelerometer 911 can detect the magnitude of acceleration along the three coordinate axes of the coordinate system established by the display device 900. For example, the accelerometer 911 can be used to detect the components of gravity acceleration along the three coordinate axes. The processor 901 can control the display screen 905 to display the user interface in a landscape or portrait view based on the gravity acceleration signal collected by the accelerometer 911. The accelerometer 911 can also be used to collect game or user motion data.

[0146] The gyroscope sensor 912 can detect the orientation and rotation angle of the display device 900. It can work in conjunction with the accelerometer 911 to capture the user's 3D movements of the display device 900. Based on the data collected by the gyroscope sensor 912, the processor 901 can implement the following functions: motion sensing (for example, changing the UI based on the user's tilt operation), image stabilization during shooting, game control, and inertial navigation.

[0147] The pressure sensor 913 can be set on the side frame of the display device 900 and / or the lower layer of the display screen 905. When the pressure sensor 913 is set on the side frame of the display device 900, it can detect the user's grip signal of the display device 900, and the processor 901 performs left and right hand recognition or shortcut operations based on the grip signal collected by the pressure sensor 913. When the pressure sensor 913 is set on the lower layer of the display screen 905, the processor 901 controls the operable controls on the UI interface based on the user's pressure operation on the display screen 905. The operable controls include at least one of button controls, scroll bar controls, icon controls, and menu controls.

[0148] The fingerprint sensor 914 is used to collect the user's fingerprint, and the processor 901 identifies the user's identity based on the fingerprint collected by the fingerprint sensor 914, or the fingerprint sensor 914 identifies the user's identity based on the collected fingerprint. When the user's identity is identified as a trusted identity, the processor 901 authorizes the user to perform relevant sensitive operations, which include unlocking the screen, viewing encrypted information, downloading software, making payments, and changing settings. The fingerprint sensor 914 can be set on the front, back, or side of the display device 900. When a physical button or manufacturer logo is set on the display device 900, the fingerprint sensor 914 can be integrated with the physical button or manufacturer logo.

[0149] The optical sensor 915 is used to detect ambient light intensity. In one embodiment, the processor 901 can control the display brightness of the display screen 905 based on the ambient light intensity detected 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 decreased. In another embodiment, the processor 901 can also dynamically adjust the shooting parameters of the camera assembly 906 based on the ambient light intensity detected by the optical sensor 915.

[0150] Proximity sensor 916, also known as a distance sensor, is typically located on the front panel of display device 900. Proximity sensor 916 is used to detect the distance between the user and the front of display device 900. In one embodiment, when proximity sensor 916 detects that the distance between the user and the front of display device 900 is gradually decreasing, processor 901 controls display screen 905 to switch from the screen-on state to the screen-off state. When proximity sensor 916 detects that the distance between the user and the front of display device 900 is gradually increasing, processor 901 controls display screen 905 to switch from the screen-off state to the screen-on state.

[0151] Those skilled in the art will understand that Figure 9 The structure shown in the figure does not constitute a limitation on the display device 900, and the display device 900 may include more or fewer components than shown in the figure, or combine certain components, or adopt a different component arrangement.

[0152] In addition, an embodiment of the present application further provides a computer-readable storage medium, in which instructions are stored. The instructions are loaded and executed by a display driver chip to implement the above-mentioned display control method.

[0153] In addition, an embodiment of the present application further provides a computer program product or a computer program, wherein the computer program product includes computer instructions, and the instructions are loaded and executed by a display driver chip to implement the above-mentioned display control method.

[0154] Those skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware, or by a program to instruct the relevant hardware, and the program may be stored in a computer-readable storage medium, which may be a read-only memory, a disk, or an optical disk, etc.

[0155] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A display control method, characterized in that: A display driver chip for a display screen, the method comprising: receiving a partition control instruction issued by a control unit electrically connected to the display driver chip; wherein the partition control instruction is issued by the control unit after determining that the current application scenario type of the display screen is a target application scenario; Based on the partition control instruction, the display area of the display screen is divided into a first display partition and a second display partition; 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; wherein the second refresh rate is less than the first refresh rate; outputting a first TE signal corresponding to the first display partition and a second TE signal corresponding to the second display partition to the control unit respectively; Among them, the first TE signal and the second TE signal are both used to instruct the control unit to transmit image data to the display driver chip; 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.

2. The method according to claim 1, characterized in that The target application scenario includes a game scenario, a video playback scenario, or a sliding scenario where the sliding speed is greater than a speed threshold; The step of dividing the display area of the display screen into a first display partition and a second display partition comprises: In response to the display screen currently being 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 currently being in a portrait orientation, dividing the display area horizontally into the first display partition and the second display partition; The first display partition is larger than the second display partition.

3. The method according to claim 1, characterized in that The 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, includes: The first display partition is controlled to display dynamic images at the first refresh rate, and the second display partition is controlled to display static images at the second refresh rate.

4. The method according to any one of claims 1 to 3, characterized in that For any one of the first display partition and the second display partition, the pixel unit in the display partition includes a pixel compensation circuit, the pixel compensation circuit inputs an initial voltage signal via an initial voltage signal line, and controls the reset of the light-emitting device of the pixel compensation circuit by the initial voltage signal; The method further comprises: 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 having different voltage values are determined based on target display conditions; The target display condition includes that a brightness difference between the first display partition and the second display partition is smaller than a brightness threshold, and a chromaticity difference is smaller than a chromaticity threshold.

5. The method according to any one of claims 1 to 3, characterized in that For any one of the first display partition and the second display partition, a pixel unit in the display partition includes a pixel compensation circuit, the pixel compensation circuit inputs a light emitting control signal via a light emitting control signal line, and controls the light emitting device of the pixel compensation circuit to emit light according to the light emitting control signal; The method further comprises: Through the light-emitting control signal lines corresponding to the pixel units in different display partitions, light-emitting control signals with different light-emitting time proportions are input to the corresponding pixel compensation circuits respectively; The light control signals with different light emitting time proportions are determined based on target display conditions; The target display condition includes that a brightness difference between the first display partition and the second display partition is smaller than a brightness threshold, and a chromaticity difference is smaller than a chromaticity threshold.

6. The method according to any one of claims 1 to 3, characterized in that The method further comprises: Before controlling the second display partition to display the next frame of the picture, adding at least one transition picture frame for display; The number of frames of the transition picture is determined based on the target display condition; The target display condition includes that a brightness difference between the first display partition and the second display partition is smaller than a brightness threshold, and a chromaticity difference is smaller than a chromaticity threshold.

7. A display driver chip, characterized in that: The display driver chip is used for: receiving a partition control instruction issued by a control unit electrically connected to the display driver chip; wherein the partition control instruction is issued by the control unit after determining that the current application scenario type of the display screen is a target application scenario; Based on the partition control instruction, the display area of the display screen is divided into a first display partition and a second display partition; 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; wherein the second refresh rate is less than the first refresh rate; outputting a first TE signal corresponding to the first display partition and a second TE signal corresponding to the second display partition to the control unit respectively; Among them, the first TE signal and the second TE signal are both used to instruct the control unit to transmit image data to the display driver chip; 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.

8. The display driver chip according to claim 7, wherein: For any one of the first display partition and the second display partition, the pixel unit in the display partition includes a pixel compensation circuit, the pixel compensation circuit inputs an initial voltage signal via an initial voltage signal line, and controls the reset of the light-emitting device of the pixel compensation circuit by the initial voltage signal; The display driver chip is further used for: 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 having different voltage values are determined based on target display conditions; The target display condition includes that a brightness difference between the first display partition and the second display partition is smaller than a brightness threshold, and a chromaticity difference is smaller than a chromaticity threshold.

9. The display driver chip according to claim 7, wherein: For any one of the first display partition and the second display partition, a pixel unit in the display partition includes a pixel compensation circuit, the pixel compensation circuit inputs a light emitting control signal via a light emitting control signal line, and controls the light emitting device of the pixel compensation circuit to emit light according to the light emitting control signal; The display driver chip is further used for: Through the light-emitting control signal lines corresponding to the pixel units in different display partitions, light-emitting control signals with different light-emitting time proportions are input to the corresponding pixel compensation circuits respectively; The light control signals with different light emitting time proportions are determined based on target display conditions; The target display condition includes that a brightness difference between the first display partition and the second display partition is smaller than a brightness threshold, and a chromaticity difference is smaller than a chromaticity threshold.

10. The display driver chip according to claim 7, wherein: The display driver chip is further used for: Before controlling the second display partition to display the next frame of the picture, adding at least one transition picture frame for display; The number of frames of the transition picture is determined based on the target display condition; The target display condition includes that a brightness difference between the first display partition and the second display partition is smaller than a brightness threshold, and a chromaticity difference is smaller than a chromaticity threshold.

11. A display device, characterized in that: The display device includes: a display screen and a control unit electrically connected to a display driver chip of the display screen, wherein the display driver chip is used to execute the display control method according to any one of claims 1 to 6.

12. A computer-readable storage medium, characterized in that The storage medium stores instructions, which are loaded and executed by the display driver chip to implement the display control method according to any one of claims 1 to 6.

13. A computer program product or a computer program, characterized in that The computer program product includes computer instructions, which are loaded and executed by a display driver chip to implement the display control method according to any one of claims 1 to 6.

Images