Display driver integrated circuit, display module, and electronic device and driving method therefor

Abstract

A display driver integrated circuit (20), a display module (40), and an electronic device (1) and a driving method therefor, which relate to the technical field of electronics, and are used for improving the stability of the display effect of the electronic device (1). For both a single OLED panel and a tandem OLED panel, the approach of using different driving schemes in different scenarios is adopted, so as to achieve optimal display effects in the different scenarios. For example, the display effects of a display panel (10) in different scenarios are optimized by means of changing the pulse width of a light emission control start signal (STV-em), changing the frequency of an anode reset start signal (STV-s1), etc., so as to improve the stability of the display effect of the electronic device (1).

Description

Display driver integrated circuit, display module, electronic device and driving method thereof

[0001] This application claims priority to Chinese Patent Application No. 202411758106.8, filed with the State Intellectual Property Office of China on November 29, 2024, entitled "Display Driver Integrated Circuit, Display Module, Electronic Device and Driving Method Thereof", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of electronic technology, and in particular to a display driver integrated circuit, a display module, an electronic device, and a driving method thereof. Background Technology

[0003] Organic light-emitting diode (OLED) display panels and other self-emissive display panels have been widely used in the display field due to their advantages such as being thin, light, having a wide viewing angle, being actively emitting light, having continuously adjustable emission colors, having low cost, having a high color gamut, having high contrast, having a fast response speed, having low power consumption, having low driving voltage, having a wide operating temperature range, having a simple manufacturing process, having high luminous efficiency, and being able to display flexibly.

[0004] As the performance of electronic devices improves, in order to balance power consumption and display quality, there are often changes in display settings such as brightness and refresh rate switching depending on the usage state. However, the display effect during these state changes in current electronic devices still needs improvement. Summary of the Invention

[0005] This application provides a display driver integrated circuit, a display module, an electronic device, and a driving method thereof, for improving the stability of the display effect of electronic devices.

[0006] In a first aspect of the embodiments of the present application, a display driving integrated circuit is provided. The display driving integrated circuit is used to drive a display panel. The display driving integrated circuit is further configured to: receive a first instruction and output a first anode reset start signal and a first light emission control start signal to the display panel; in an image frame, the first anode reset start signal includes N first anode reset pulses, the first light emission control start signal includes M*N first light emission control pulses, and M first light emission control pulses correspond to each first anode reset pulse. The first instruction can, for example, control the display panel to enter a first display scenario. Among the M first light emission control pulses, the widths of the first W first light emission control pulses are less than the widths of the remaining M-W first light emission control pulses; N and W are integers greater than or equal to 1, M is an integer greater than 1, and W<M. Receive a second instruction and output a second anode reset start signal and a second light emission control start signal to the display panel; in an image frame, the second anode reset start signal includes O second anode reset pulses, the second light emission control start signal includes P*O second light emission control pulses, and P second light emission control pulses correspond to each second anode reset pulse; among the P second light emission control pulses, the widths of the first Q second light emission control pulses are greater than the widths of the remaining P-Q second light emission control pulses. The second instruction can, for example, control the display panel to enter a second display scenario. O and Q are integers greater than or equal to 1, P is an integer greater than 1, and Q<P.

[0007] The display driver integrated circuit provided in this application, based on a first instruction, reduces the width of the first W first light emission control pulses after anode reset in each repeating unit (M first light emission control pulses) of the first light emission control start signal, thereby reducing the light emission brightness corresponding to the first W first light emission control pulses. Originally, due to the influence of anode reset, the light emission brightness under the first W first light emission control pulses is weaker than that under the remaining first light emission control pulses. Reducing the width of the first W first light emission control pulses further reduces the light emission brightness under the first W first light emission control pulses, making it almost negligible. This changes the light emission waveform under each repeating unit from multi-peak (e.g., double-peak) to single-peak, achieving a uniform actual light emission waveform. That is, the consistency of light emission brightness is relatively high, and the brightness jump caused by grayscale changes is significantly reduced, helping to improve the ghosting problem. Based on a second instruction, increasing the width of the first Q (e.g., the first) second light emission control pulses after anode reset in each repeating unit (P second light emission control pulses) of the second light emission control start signal can increase the light emission brightness corresponding to the first Q second light emission control pulses. Originally, due to the influence of anode reset, the luminous brightness under the first Q second luminous control pulses was weaker than that under the remaining second luminous control pulses. Increasing the width of the first Q second luminous control pulses increases the luminous brightness under the first Q second luminous control pulses. This makes the luminous waveform under each pulse approximately the same, significantly reducing the change in luminous brightness caused by pulse switching, and achieving a more uniform actual luminous waveform. That is, the luminous brightness is always relatively uniform, which helps to improve the flicker problem. Based on this, the display driver integrated circuit provided in this application provides luminous control start signals with different timings based on different instructions, which can improve the ghosting problem in the first display scene corresponding to the first instruction and the flicker problem in the second display scene corresponding to the second instruction, so that it has better display effects in different display scenes.

[0008] In one possible implementation, the display driver integrated circuit is further configured to: after receiving the first instruction and before outputting the first light emission control start signal to the display panel, output a third light emission control start signal to the display panel. That is, during the change of display scene, a transition frame is added. In one image frame of the transition frame, the third light emission control start signal includes multiple third light emission control pulses of equal width. By setting a third light emission control start signal with a fixed pulse width, the instantaneous brightness of the transition frame is adjusted so that the average brightness of the transition frame can be between the light emission brightness of the first display scene and the light emission brightness of the second display scene, reducing the brightness difference when switching between the first and second display scenes, thus facilitating a seamless switching from the second display scene to the first display scene.

[0009] In one possible implementation, the display driver integrated circuit is further configured to: after receiving the second instruction and before outputting the first light emission control start signal to the display panel, output a third light emission control start signal to the display panel. That is, a transition frame is added during the change of display scene. In one image frame of the transition frame, the third light emission control start signal includes multiple third light emission control pulses of equal width. By setting a third light emission control start signal with a fixed pulse width, the instantaneous brightness under the transition frame is adjusted so that the average brightness of the transition frame can be between the light emission brightness under the first display scene and the light emission brightness under the second display scene, reducing the brightness difference when switching between the first and second display scenes, thus helping to achieve a seamless transition from the first to the second display scene.

[0010] In one possible implementation, the display driver integrated circuit is further configured to: output a first compensation data voltage to the display panel when a third light emission control start signal is output to the display panel during a transition frame. By compensating the data voltage of the transition frame, the uniformity of average brightness between the transition frame and the first and second display scenes can be further improved, thereby further realizing seamless switching between the first and second display scenes.

[0011] In one possible implementation, the display driver integrated circuit is further used to: output a compensation initialization voltage to the display panel when a third light emission control start signal is output to the display panel during the transition frame. By compensating the initialization voltage of the transition frame, the uniformity of average brightness between the transition frame and the first and second display scenes can be further improved, thereby further realizing seamless switching between the first and second display scenes.

[0012] In one possible implementation, the display driver integrated circuit is further configured to: output a second compensation data voltage to the display panel when, in a first display scenario, a first light emission control start signal is output to the display panel. By compensating the data voltage of the display panel, the brightness consistency in the first display scenario can be further improved, thus mitigating the display ghosting problem.

[0013] In one possible implementation, the first instruction includes an image refresh instruction to drive the display panel into dynamic image frame mode and switch the display interface; the second instruction includes a self-refresh instruction to drive the display panel into static image frame mode without switching the display interface. Because the display interface changes continuously in dynamic image frame mode, there will be jumps from low grayscale to high grayscale, resulting in severe ghosting. In static image frame mode, although the display interface remains unchanged, the brightness of the light emission changes continuously, resulting in severe flickering. This application embodiment uses a first light emission control start signal to drive the display panel in dynamic image frame mode, making the brightness of the display panel uniform in dynamic image frame mode, which helps to improve the ghosting problem in dynamic image frame mode. By using a second light emission control start signal to drive the display panel in static image frame mode, the brightness of the display panel is made uniform in static image frame mode, which helps to improve the flickering problem in static image frame mode.

[0014] In one possible implementation, the display driver integrated circuit receives a first instruction to enter a first mode and receives a second instruction to enter a second mode. The first mode includes a dark mode, and the second mode includes a light mode. The dark mode represents a display mode where the background of the display panel is dark and the text is light, while the light mode represents a display mode where the background of the display panel is light and the text is dark. Because the brightness jump is significant when changing from low to high grayscale in dark mode, ghosting is a serious problem. Because the brightness constantly switches in light mode, flickering is a serious problem. This application embodiment uses a first light emission control start signal to drive the display panel in dark mode, making the brightness of the display panel uniform in dark mode, which helps to improve the ghosting problem in dark mode. By using a second light emission control start signal to drive the display panel in light mode, the brightness of the display panel is made uniform in light mode, which helps to improve the flickering problem in light mode.

[0015] In one possible implementation, the first instruction includes a dark mode activation instruction, and the second instruction includes a light mode activation instruction. The electronic device can directly distinguish between the first and second instructions based on the user's operation, with high accuracy.

[0016] In one possible implementation, the display panel includes an array substrate and a plurality of light-emitting devices disposed on the array substrate; the light-emitting devices include a first electrode layer, a light-emitting layer, and a second electrode layer sequentially disposed on the array substrate. The display driver integrated circuit provided in this application embodiment has a better driving effect on display panels including a single light-emitting layer.

[0017] A second aspect of this application provides a display module, which includes a display driver integrated circuit and a display panel, wherein the display driver integrated circuit is coupled to the display panel; the display driver integrated circuit includes the display driver integrated circuit of any one of the first aspects. The display module provided in this application includes the above-mentioned display driver integrated circuit, and the beneficial effects of the display module are the same as those of the display driver integrated circuit, which will not be repeated here.

[0018] A third aspect of the embodiments of this application provides an electronic device, which includes a drive controller and a display module, the display module being coupled to the drive controller; the display module includes the display module of the second aspect.

[0019] The electronic device provided in this application includes the above-mentioned display driver integrated circuit. The beneficial effects of the electronic device are the same as those of the display driver integrated circuit, and will not be repeated here.

[0020] In one possible implementation, the first instruction includes an image refresh instruction, whereby the display panel receives a first light emission control start signal and switches from the first display interface to the second display interface; the second instruction includes a self-refresh instruction, whereby the display panel receives a second light emission control start signal and maintains the third display interface. Based on the display driver integrated circuit provided in this application, the ghosting problem existing when switching from the first display interface to the second display interface can be improved, and the flickering problem that occurs during the continuous display of the third image can be improved.

[0021] In one possible implementation, the first instruction includes a dark mode activation instruction, whereby the display panel receives a first light emission control start signal, and the display interface enters dark mode; the second instruction includes a light mode activation instruction, whereby the display panel receives a second light emission control start signal, and the display interface enters light mode. Based on the display driver integrated circuit provided in this application, the ghosting problem in dark mode and the flickering problem in light mode can be improved.

[0022] A fourth aspect of this application provides a display driver integrated circuit, which is used to drive a display panel. The display driver integrated circuit is further configured to: receive a first brightness command characterizing a first luminance, and output a first reset start signal and a first luminance control start signal to the display panel; receive a second brightness command characterizing a second luminance, and output a second reset start signal and a second luminance control start signal to the display panel. Wherein, the first luminance is less than a set brightness, and the second luminance is greater than or equal to the set brightness; f1 is the frequency of the first reset start signal, f2 is the frequency of the second reset start signal, f3 is the frequency of the first luminance control start signal, and f4 is the frequency of the second luminance control start signal; f1 <f2,f3≦f4,f1≦f3,f2≦f4。

[0023] The higher the frequency of the reset start signal, the greater the charging current required by the display panel. In low-brightness scenarios, when the grayscale level switches from low to high, the larger instantaneous capacitor charging current can easily cause the average brightness to become too bright at the moment of switching, resulting in ghosting on the display panel. However, in high-brightness scenarios, the ghosting problem is negligible. This embodiment reduces the number of resets of the anode of the light-emitting device in low-brightness scenarios, thereby reducing the charging current required by the display panel and mitigating the transient overbrightness problem introduced by the charging current in low-brightness scenarios. In this way, the problem of excessive brightness at the moment of switching from low to high grayscale in low-brightness scenarios is improved, thus reducing the ghosting problem of the display panel and achieving ghosting-free display in low-brightness scenarios.

[0024] In one possible implementation, f2 = n * 360 Hz, where n is a positive integer. By setting the base frequency for high-brightness scenes to an integer multiple of 360 Hz, flicker-free switching between 90 Hz and 120 Hz can be achieved in high-brightness scenes, resulting in optimal display performance even at high brightness.

[0025] In one possible implementation, the display panel includes an array substrate and a plurality of light-emitting devices disposed on the array substrate; the light-emitting devices include a first electrode layer, a first light-emitting layer, a conductive connection layer, a second light-emitting layer, and a second electrode layer sequentially disposed on the array substrate. The display driver integrated circuit provided in this application embodiment has a better driving effect on display panels including multiple light-emitting layers.

[0026] A fifth aspect of this application provides a display module, which includes a display driver integrated circuit and a display panel, wherein the display driver integrated circuit is coupled to the display panel; the display driver integrated circuit includes the display driver integrated circuit of any one of the fourth aspects. The display module provided in this application includes the aforementioned display driver integrated circuit, and the beneficial effects of the display module are the same as those of the display driver integrated circuit, which will not be repeated here.

[0027] A sixth aspect of the embodiments of this application provides an electronic device, the electronic device including a drive controller and a display module, the display module being coupled to the drive controller; the display module includes the display module of the fifth aspect.

[0028] In the seventh aspect of the embodiments of the present application, a driving method for an electronic device is provided. The electronic device includes a driving controller, a display driving integrated circuit, and a display panel. The driving method includes: the driving controller sends a first instruction; the display driving integrated circuit receives the first instruction and outputs a first anode reset start signal and a first light emission control start signal to the display panel; in an image frame, the first anode reset start signal includes N first anode reset pulses, and the first light emission control start signal includes M*N first light emission control pulses. After each first anode reset pulse, there are M first light emission control pulses corresponding thereto; among the M first light emission control pulses, the widths of the first W first light emission control pulses are less than the widths of the remaining M-W first light emission control pulses; N and W are integers greater than or equal to 1, M is an integer greater than 1, and W<M. The driving controller sends and receives a second instruction; the display driving integrated circuit receives the second instruction and outputs a second anode reset start signal and a second light emission control start signal to the display panel; in an image frame, the second anode reset start signal includes O second anode reset pulses, and the second light emission control start signal includes P*O second light emission control pulses. After each second anode reset pulse, there are P second light emission control pulses corresponding thereto; among the P second light emission control pulses, the widths of the first Q second light emission control pulses are greater than the widths of the remaining P-Q second light emission control pulses; O and Q are integers greater than or equal to 1, P is an integer greater than 1, and Q<P. The beneficial effects of the driving method of the electronic device are the same as those of the display driving integrated circuit in the first aspect, and will not be elaborated herein.

[0029] In a possible implementation, the driving method further includes: after the display driving integrated circuit receives the first instruction and before outputting the first light emission control start signal to the display panel, the display driving integrated circuit outputs a third light emission control start signal to the display panel; in an image frame, the third light emission control start signal includes multiple third light emission control pulses with equal widths.

[0030] In a possible implementation, the driving method further includes: after the display driving integrated circuit receives the second instruction and before outputting the first light emission control start signal to the display panel, the display driving integrated circuit outputs a third light emission control start signal to the display panel; in an image frame, the third light emission control start signal includes multiple third light emission control pulses with equal widths.

[0031] In a possible implementation, the driving method further includes: when the display driving integrated circuit outputs the third light emission control start signal to the display panel, the display driving integrated circuit outputs a first compensation data voltage to the display panel.

[0032] In a possible implementation, the driving method further includes: when the display driving integrated circuit outputs a third light-emitting control start signal to the display panel, the display driving integrated circuit outputs a compensation initialization voltage to the display panel.

[0033] In a possible implementation, the driving method further includes: when the display driving integrated circuit outputs a first light-emitting control start signal to the display panel, the display driving integrated circuit outputs a second compensation data voltage to the display panel.

[0034] In the eighth aspect of the embodiments of the present application, a driving method for an electronic device is provided. The electronic device includes a driving controller, a display driving integrated circuit, and a display panel. The driving method includes: the driving controller sends a first brightness instruction representing the first light-emitting brightness, and the display driving integrated circuit outputs a first reset start signal and a first light-emitting control start signal to the display panel according to the first brightness instruction. The driving controller sends a second brightness instruction representing the second light-emitting brightness, and the display driving integrated circuit outputs a second reset start signal and a second light-emitting control start signal to the display panel according to the second brightness instruction. Among them, the first light-emitting brightness is less than the set brightness, and the second light-emitting brightness is greater than or equal to the set brightness; f1 is the frequency of the first reset start signal, f2 is the frequency of the second reset start signal, f3 is the frequency of the first light-emitting control start signal, and f4 is the frequency of the second light-emitting control start signal; f1 < f2, f3 ≤ f4, f1 ≤ f3, f2 ≤ f4. The beneficial effects of the driving method of the electronic device are the same as those of the display driving integrated circuit in the fourth aspect, and will not be elaborated here.

[0035] In a possible implementation, f2 = n * 360HZ, where n is a positive integer. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] FIG. 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application;

[0037] FIG. 2A is a schematic topological structure diagram of a pixel circuit provided by an embodiment of the present application;

[0038] FIG. 2B is a schematic structural diagram of a display panel provided by an embodiment of the present application;

[0039] FIG. 2C is a schematic structural diagram of another display panel provided by an embodiment of the present application;

[0040] FIG. 2D is a schematic structural diagram of a light-emitting control signal generation circuit provided by an embodiment of the present application;

[0041] FIG. 2E is a driving timing diagram of a pixel circuit provided by an embodiment of the present application;

[0042] Figure 3A is a brightness variation diagram corresponding to the timing of a light emission control start signal provided in an embodiment of this application;

[0043] Figure 3B is a light emission waveform diagram provided in an embodiment of this application;

[0044] Figure 4A is a timing diagram of a light emission control start signal provided in an embodiment of this application;

[0045] Figure 4B is another light emission waveform diagram provided in an embodiment of this application;

[0046] Figure 4C shows another light emission waveform provided in an embodiment of this application;

[0047] Figure 5 is a driving timing diagram of a display panel provided in an embodiment of this application;

[0048] Figure 6A is a light emission waveform diagram of a first display scenario provided in an embodiment of this application;

[0049] Figure 6B is a light emission waveform diagram of a second display scenario provided in an embodiment of this application;

[0050] Figure 7A is a display scene switching logic diagram provided in an embodiment of this application;

[0051] Figure 7B is a scene switching diagram of a display panel provided in an embodiment of this application;

[0052] Figure 7C is a scene switching diagram of the display interface of another display panel provided in an embodiment of this application;

[0053] Figure 8A is a scene switching diagram of the display interface of another display panel provided in an embodiment of this application;

[0054] Figure 8B is a scene switching diagram of the display interface of another display panel provided in the embodiment of this application;

[0055] Figure 9A is a driving timing diagram of another display panel provided in an embodiment of this application;

[0056] Figure 9B is a display scene switching diagram provided in an embodiment of this application;

[0057] Figure 10 shows the light emission waveforms under three display scenarios provided in the embodiments of this application;

[0058] Figure 11 is a driving timing diagram of another display panel provided in an embodiment of this application;

[0059] Figure 12A shows the brightness of different gray levels in a low-brightness scene according to an embodiment of this application;

[0060] Figure 12B shows the brightness of different gray levels in another low-brightness scene provided in the embodiments of this application. Detailed Implementation

[0061] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0062] Hereinafter, the terms "second," "first," etc., are used for descriptive convenience only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "second," "first," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0063] Furthermore, in the embodiments of this application, directional terms such as "upper," "lower," "left," and "right" may be defined relative to the orientation in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms can be relative concepts, used for relative description and clarification, and can change accordingly based on the orientation of the components in the accompanying drawings.

[0064] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, the term "coupled connection" can be a direct electrical connection or an indirect electrical connection through an intermediate medium. The term "contact" can be direct contact or indirect contact through an intermediate medium.

[0065] In this embodiment of the application, "and / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0066] This application provides an electronic device, which may be, for example, a foldable electronic device. The electronic device may be, for example, a consumer electronics product, a home electronics product, an in-vehicle electronics product, or a financial electronics product. Consumer electronics products include mobile phones, tablets, laptops, e-readers, personal computers (PCs), personal digital assistants (PDAs), desktop monitors, smart wearable products (e.g., smartwatches, smart bracelets), virtual reality (VR) electronic devices, augmented reality (AR) electronic devices, mixed reality (MR) electronic devices, artificial intelligence (AI) electronic devices, drones, etc. Home electronics products include smart door locks, televisions, refrigerators, and rechargeable small household appliances (e.g., soymilk makers, robot vacuum cleaners), etc. In-vehicle electronics products include in-vehicle navigation systems, in-vehicle DVDs, etc. Financial electronics products include ATMs and self-service electronic devices, etc.

[0067] This application does not impose any special restrictions on the specific form of the above-mentioned electronic device. For the sake of convenience, the following embodiments all use mobile phones as an example for illustration.

[0068] Figure 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0069] As shown in Figure 1, the electronic device 1 includes a display module 40 and a drive controller 30. In some embodiments, the electronic device 1 also includes a power management integrated circuit (PMIC) (not shown in Figure 1), which supplies power to the display driver integrated circuit 20 and the drive controller 30.

[0070] The drive controller 30, as the core of the electronic device 1, is used for overall system processing and control. The drive controller 30 is coupled to the display module 40 and receives image signals and control signals (e.g., provided by a central processing unit (CPU)). The drive controller 30 outputs image data that matches the interface specifications of the display module 40 based on the image signals. The drive controller 30 may include, for example, a system-on-chip (SOC). The drive controller 30 can be coupled to the display module 40 via a mobile industry processor interface (MIPI). Alternatively, the drive controller 30 can also be coupled to the display module 40 via other high-speed serial / deserial (SerDes) interfaces.

[0071] The display module 40 includes, for example, a display panel 10 and a display driver integrated circuit 20. The display driver integrated circuit 20 serves as the control core of the display panel 10, driving the display panel 10 to work and receiving data from the drive controller 30.

[0072] The display driver integrated circuit 20 is coupled to, for example, the drive controller 30, receives signals output by the drive controller 30, and provides the display panel 10 with the scanning signals and data signals required for light emission. The signals sent by the display driver integrated circuit 20 will be explained in detail below in conjunction with the structure of the pixel circuit.

[0073] For example, the display driver integrated circuit 20 receives data control signals and image data from the driver controller 30. The display driver integrated circuit 20 converts the image data into data signals and outputs the data signals to multiple data signal lines. The data signals are analog voltages corresponding to the grayscale values ​​of the image data. The display driver integrated circuit 20 is also used to output scan control signals such as clock signals, gate activation signals (STV), and reset signals required for display to the display panel 10. The display driver integrated circuit 20 may include, for example, a display driver integrated circuit (DDIC).

[0074] The display panel 10 serves as a data presentation unit, used to display and control data sent by the drive controller 30. For example, the display panel 10 may be a self-emissive display module 40 such as an organic light-emitting diode (OLED) display module 40, an active-matrix organic light-emitting diode (AMOLED) display module 40, a mini organic light-emitting diode (Mini-OLED) display module 40, a micro light-emitting diode (Micro-LED) display module 40, a micro organic light-emitting diode (Micro-OLED) display module 40, or a quantum dot light-emitting diode (QLED) display module 40. In this case, the display panel 10 can be a rigid display panel or a flexible display panel.

[0075] For any of the above-described display panels 10, the display panel 10 includes an active display area (AA) and a non-display area BB located around the active display area AA. The active display area AA is used to display images and includes multiple sub-pixels (SPs). Each sub-pixel is provided with a pixel circuit 11, which receives data signals provided by the display driver integrated circuit 20. The non-display area BB includes a driving circuit, which receives scan control signals provided by the display driver integrated circuit 20.

[0076] In this application, the pixel circuits 11 are described using a matrix arrangement as an example. Pixel circuits 11 arranged in a row along the horizontal direction X are called the same row pixel circuits 11, and pixel circuits 11 arranged in a row along the vertical direction Y are called the same column pixel circuits 11.

[0077] In some embodiments, the pixel circuit 11 typically includes a driving circuit composed of multiple transistors and a light-emitting device. The driving circuit generates a driving current to drive the light-emitting device to emit light, thereby realizing the light emission of the pixel circuit 11. Multiple pixel circuits 11 are arrayed on a substrate. For example, the structure including a substrate and multiple arrayed driving circuits is called an array substrate. Multiple light-emitting devices are disposed on the array substrate, and each light-emitting device is coupled to a pixel circuit. Alternatively, the display panel 10 includes an array substrate and multiple light-emitting devices. The array substrate includes a substrate and an arrayed driving circuit, and the driving circuit and light-emitting devices are coupled to form the pixel circuit 11.

[0078] Figure 2A is a schematic diagram of the topology of a pixel circuit provided in an embodiment of this application.

[0079] In some embodiments, as shown in FIG2A, the pixel circuit 11 includes an anode reset circuit 111, a second node initialization circuit 112, a first node initialization circuit 113, a write and threshold compensation circuit 114, a light emission control circuit 115, and a light emission device 116. The pixel circuit 11 shown in FIG2A is only an illustration and is not intended to limit anything.

[0080] The anode reset circuit 111 includes a seventh transistor T7, the second node initialization circuit 112 includes an eighth transistor T8, the first node initialization circuit 113 includes a fourth transistor T4 and a third transistor T3, the write and threshold compensation circuit 114 includes a second transistor T2, a first transistor T1, a third transistor T3, and a storage capacitor Cst, and the light-emitting control circuit 115 includes a fifth transistor T5 and a sixth transistor T6. The first transistor T1 is a driving transistor, and the remaining transistors are switching transistors. The first node initialization circuit 113 and the write and threshold compensation circuit 114 share the third transistor T3. The light-emitting device 116 is, for example, an OLED.

[0081] The gates of the seventh transistor T7 and the eighth transistor T8 are controlled by the first control signal terminal S1, the gate of the fourth transistor T4 is controlled by the second control signal terminal S2, the gate of the third transistor T3 is controlled by the third control signal terminal S3, and the gate of the second transistor T2 is controlled by the fourth control signal terminal S4.

[0082] Figure 2B is a schematic diagram of the structure of a display panel provided in an embodiment of this application, and Figure 2C is a schematic diagram of the structure of another display panel provided in an embodiment of this application.

[0083] In some embodiments, as shown in FIG2B, the display panel 10 includes an array substrate and a plurality of light-emitting devices 116 disposed on the array substrate. FIG2B illustrates the structure of one light-emitting device 116. The array substrate includes a substrate and an anode reset circuit 111, a second node initialization circuit 112, a first node initialization circuit 113, a write and threshold compensation circuit 114, and a light-emitting control circuit 115 disposed on the substrate.

[0084] The light-emitting device 116 includes a first electrode layer, a first light-emitting layer, and a second electrode layer sequentially disposed on the array substrate. This type of display panel 10 is referred to in the art as a single OLED panel.

[0085] In other embodiments, as shown in FIG2C, the display panel 10 includes an array substrate and a plurality of light-emitting devices 116 disposed on the array substrate. FIG2C illustrates the structure of one light-emitting device 116. The array substrate includes a substrate and an anode reset circuit 111, a second node initialization circuit 112, a first node initialization circuit 113, a write and threshold compensation circuit 114, and a light emission control circuit 115 disposed on the substrate.

[0086] The light-emitting device 116 includes a first electrode layer, a first light-emitting layer, a conductive connection layer, a second light-emitting layer, and a second electrode layer sequentially disposed on an array substrate. This type of display panel 10 is referred to in the art as a tandem OLED panel. In this case, the light-emitting device 116 is equivalent to including a first sub-light-emitting device OLED1 and a second sub-light-emitting device OLED2 connected in series, with the first sub-light-emitting device OLED1 and the second sub-light-emitting device OLED2 connected in series via the conductive connection layer. The first sub-light-emitting device OLED1 has a first parasitic capacitance C1, and the second sub-light-emitting device OLED2 has a second parasitic capacitance C2.

[0087] The first and second light-emitting layers are used to emit light of the same color. Taking the first light-emitting layer as an example, the first light-emitting layer includes an organic light-emitting layer. The first light-emitting layer may also include at least one of a hole injection layer, a hole transport layer, an electron blocking layer, an electron transport layer, and an electron injection layer. The organic light-emitting layer in the first and second light-emitting layers can be used to emit light of the same color or to emit light of different colors.

[0088] For example, the first electrode layer serves as the anode of the light-emitting device 116, and the second electrode layer serves as the cathode. A relatively high potential is applied to the first electrode layer, and a relatively low potential is applied to the second electrode layer. Holes are injected from the first electrode layer into the first light-emitting layer, and electrons are injected from the second electrode layer through the conductive connection layer into the first light-emitting layer. The energy generated after the holes and electrons recombine in the first light-emitting layer can excite it to emit light. Similarly, holes are injected from the first electrode layer through the conductive connection layer into the second light-emitting layer, and electrons are injected from the second electrode layer into the second light-emitting layer. The energy generated after the holes and electrons recombine in the second light-emitting layer can excite it to emit light. Both the second electrode layer and the conductive connection layer are transparent conductive layers. Light of the same color emitted by the first and second light-emitting layers is superimposed and emitted from the second electrode layer side.

[0089] Of course, the light-emitting device 116 may include more light-emitting layers, and a conductive connection layer is disposed between adjacent light-emitting layers. Figure 2C is only one illustration.

[0090] As shown in Figure 1, in some embodiments, the display panel 10 further includes a light emission control signal generation circuit 12, which is used to transmit a light emission control signal em to the light emission control signal terminals EM of the plurality of pixel circuits 11 in the display panel 10.

[0091] Figure 2D is a schematic diagram of a light emission control signal generation circuit provided in an embodiment of this application.

[0092] In some embodiments, as shown in FIG2D, the light emission control signal generation circuit 12 includes at least two cascaded shift registers RS(1) to RS(n). The signal input terminal VI of the first-stage shift register RS(1) is used to receive the light emission control start signal STV-em. Except for the first-stage shift register RS(1), the signal input terminal VI of each stage shift register RS(m) is coupled to the output terminal GO of its previous stage shift register RS(m-1). When the light emission control start signal STV-em is an on signal, the first-stage shift register RS1 of the light emission control signal generation circuit 12 starts working, and subsequently, the multiple stages of shift registers start working one after another.

[0093] For example, the light emission control start signal STV-em is provided by the display driver integrated circuit 20. The display panel 10 is used to receive the light emission control start signal STV-em sent by the display driver integrated circuit 20 and generate the light emission control signal em required by the pixel circuit 11. The timing of the light emission control signal em received by each row of pixel circuits is the same as the timing of the light emission control start signal STV-em.

[0094] Similarly, in some embodiments, the display panel 10 further includes a first control signal generation circuit (or can be understood as an anode reset control signal generation circuit) 13, which is used to transmit a first control signal s1 for each row of pixel circuits 11. The reset start signal STV-s1 required by the first control signal generation circuit 13 is provided by the display driver integrated circuit 20. The timing of the first control signal s1 received by each row of pixel circuits is the same as the timing of the reset start signal STV-s1.

[0095] The display panel 10 also includes a second control signal generation circuit 14, which transmits a second control signal s2 to each row of pixel circuits 11. The initialization start signal STV-s2 required by the second control signal generation circuit 14 is provided by the display driver integrated circuit 20. The timing of the second control signal s2 received by each row of pixel circuits is the same as the timing of the initialization start signal STV-s2.

[0096] The display panel 10 also includes a third control signal generation circuit 15, which transmits a third control signal s3 to each row of pixel circuits 11. The compensation start signal STV-s3 required by the third control signal generation circuit 15 is provided by the display driver integrated circuit 20. The timing of the third control signal s3 received by each row of pixel circuits is the same as the timing of the compensation start signal STV-s3.

[0097] The display panel 10 also includes a fourth control signal generation circuit 16, which transmits a fourth control signal s4 to each row of pixel circuits 11. The write start signal STV-s4 required by the fourth control signal generation circuit 16 is provided by the display driver integrated circuit 20. The timing of the fourth control signal s4 received by each row of pixel circuits is the same as the timing of the write start signal STV-s4.

[0098] Therefore, the display state of the display panel 10 can be adjusted by adjusting the timing of the light emission control start signal STV-em, the reset start signal STV-s1, the initialization start signal STV-s2, the compensation start signal STV-s3, and the write start signal STV-s4.

[0099] Figure 2E is a driving timing diagram of a pixel circuit provided in an embodiment of this application.

[0100] As shown in Figures 2A and 2E, the light emission process of the pixel circuit 11 in one frame can be divided into an initialization stage t1, a threshold compensation stage t2, a light emission stage t3, and an anode reset stage t4.

[0101] During initialization phase t1:

[0102] The second control signal s2 of the second control signal terminal S2 and the third control signal s3 of the third control signal terminal S3 transition from low to high and then back to low. Consequently, the fourth transistor T4 and the third transistor T3 transition from off to on and then back to off. The first control signal s1 of the first control signal terminal S1, the fourth control signal s4 of the fourth control signal terminal S4, and the light emission control signal em of the light emission control signal terminal EM all remain at high levels. Therefore, the seventh transistor T7, the eighth transistor T8, the second transistor T2, the fifth transistor T5, and the sixth transistor T6 all remain off.

[0103] During initialization phase t1, the first transistor T1, the third transistor T3, and the fourth transistor T4 are turned on, enabling voltage control of the fourth node N4, the second node N2, and the first node N1. Since the third transistor T3 and the fourth transistor T4 act as switches, and the first node N1 is electrically connected to the control electrode of the first transistor T1, and the second node N2 is electrically connected to the fourth node N4, initialization phase t1 achieves voltage control of the control electrode of the first transistor T1, the first node N1, the second node N2, and the fourth node N4. This makes the control electrode voltage of the first transistor T1, the voltage of the first node N1, the voltage of the second node N2, and the voltage of the fourth node N4 the first initialization voltages of the first initialization voltage terminal Vinit1, effectively resetting the voltages of the control electrode of the first transistor T1, the first node N1, the second node N2, and the fourth node N4.

[0104] During the threshold compensation phase t2:

[0105] The first control signal s1 at the first control signal terminal S1 transitions from high to low and then back to high. Consequently, the second transistor T2 transitions from off to on and then back to off. The third control signal s3 at the third control signal terminal S3 transitions from low to high and then back to low. Consequently, the third transistor T3 transitions from off to on and then back to off. The first control signal s1 at the first control signal terminal S1 and the light emission control signal em at the light emission control signal terminal EM both remain high, while the second control signal s2 at the second control signal terminal S2 remains low. Therefore, the seventh transistor T7, the eighth transistor T8, the fifth transistor T5, the sixth transistor T6, and the fourth transistor T4 all remain off.

[0106] In the threshold compensation stage t2, the second transistor T2, the third transistor T3, and the first transistor T1 are turned on, realizing the storage of the data voltage at the data voltage terminal Vd in the storage capacitor Cst, thus completing the writing of the data voltage. This also compensates for the threshold voltage of the first transistor T1. The threshold voltage compensation process of the first transistor T1 can be considered as the process of the first transistor T1 changing from the on state to the off state.

[0107] During the luminescence stage t3:

[0108] The light-emitting control signal em at the EM terminal transitions from a high level to a low level, and then back to a high level. Consequently, the sixth transistor T6 and the fifth transistor T5 transition from off to on, and then back to off. The second control signal s2 at the second control signal terminal S2 and the third control signal s3 at the third control signal terminal S3 remain at a low level, while the fourth transistor T4 and the third transistor T3 remain off. The first control signal s1 at the first control signal terminal S1 and the fourth control signal s4 at the fourth control signal terminal S4 remain at a high level, while the seventh transistor T7, the eighth transistor T8, and the second transistor T2 remain off.

[0109] During the light-emitting stage t3, the fifth transistor T5, the first transistor T1, and the sixth transistor T6 are turned on respectively, transmitting driving current to the light-emitting device 116, and the light-emitting device 116 emits light under the drive of the driving current.

[0110] Anode reset stage t:

[0111] The first control signal s1 at the first control signal terminal S1 transitions from a high level to a low level, and then from a low level to a high level. Consequently, the seventh transistor T7 and the eighth transistor T8 transition from off to on, and then from on to off. The second control signal s2 at the second control signal terminal S2 and the third control signal s3 at the third control signal terminal S3 remain at a low level. The fourth control signal s4 at the fourth control signal terminal S4 and the light emission control signal em at the light emission control signal terminal EM remain at a high level. The third transistor T3, the fourth transistor T4, the second transistor T2, the fifth transistor T5, and the sixth transistor T6 all remain off.

[0112] During the anode reset phase t, the seventh transistor T7 and the eighth transistor T8 are turned on, realizing the control of the voltage of the second node N2 and the anode voltage of the light-emitting device 116. This makes the voltage of the second node N2 the third initialization voltage of the third initialization voltage terminal Vinit3, and the voltage of the anode of the light-emitting device 116 the second initialization voltage of the second initialization voltage terminal Vinit2, thus realizing the reset of the voltage of the second node N2 and the anode voltage of the light-emitting device 116.

[0113] When the display panel 10 displays at different brightness levels, the control signals or voltages received by the pixel circuit 11 in the display panel 10 will be dynamically adjusted in real time.

[0114] Figure 3A is a brightness change diagram corresponding to the timing of a light emission control start signal provided in an embodiment of this application, and Figure 3B is a light emission waveform diagram provided in an embodiment of this application.

[0115] As shown in Figure 3A, the frequency of the reset start signal STV-s1 is 360Hz. The screen refresh rates supported by the display panel 10 can include 10Hz, 20Hz, 30Hz, 60Hz, 72Hz, 90Hz, and 120Hz. Figure 3A illustrates the corresponding brightness levels for various screen refresh rates. Taking a screen refresh rate of 120Hz as an example, the frequency of the reset start signal STV-s1 is 360Hz, and the frequency of the light emission control start signal STV-em is 1440Hz. In one image frame, the reset start signal STV-s1 consists of 3 pulses, resetting the anode of the light-emitting device 116 3 times. The light emission control start signal STV-em consists of 12 pulses, with 4 pulses of the light emission control start signal STV-em following each pulse of the reset start signal STV-s1.

[0116] As shown in Figure 2E, an anode reset is performed before entering the light-emitting stage t3. The anode reset stage t refreshes and resets the voltage of the second node N2 and the anode of the light-emitting device 116. As shown in Figure 3A, this results in insufficient illumination of the first light-emitting pulse after the anode reset (the pulse indicated by the arrow), leading to a deterioration in the stroboscopic effect visibility measure (SVM) of the display panel 10 and a worsening of the ghosting effect under the overdrive (OD) technology. Furthermore, as shown in Figure 3B, due to the structural characteristics of the light-emitting device 116, the brightness of the first few (three circled in Figure 3B) light-emitting waves of the single-layer OLED display panel 10 is lower than that of the subsequent light-emitting waves. In Figure 3B, each light-emitting wave has two raised pulses; the raised pulse indicated by the arrow corresponds to the light-emitting brightness under the first pulse after the anode reset in Figure 3A, and the second raised pulse represents the light-emitting brightness under the remaining pulses.

[0117] Figure 4A is a timing diagram of a light emission control start signal provided in an embodiment of this application; Figure 4B is another light emission waveform provided in an embodiment of this application; and Figure 4C is yet another light emission waveform provided in an embodiment of this application.

[0118] Insufficient illumination caused by anode reset leads to uneven overall light emission, while SVM requires uniform light emission and a minimal non-light emission phase to improve flicker. To address this, some technologies, as shown in Figure 4A, modify the pulse width of the light emission control start signal STV-em, increasing the width of the first pulse after anode reset. This unequal pulse width achieves more uniform brightness within a single light emission cycle, thus optimizing flicker.

[0119] By changing the pulse width of the emission control start signal STV-em, the emission brightness corresponding to the first pulse after anode reset can be increased. However, this causes the overall actual emission waveform to no longer strictly maintain a consistent shape. When combined with OD technology, in the ghosting compensation scheme, due to the inconsistent shape of the emission waveform, perfect ghosting compensation cannot be performed, resulting in overcompensation as shown in Figure 4B or undercompensation as shown in Figure 4C.

[0120] Based on this, an electronic device 1 is provided in this application embodiment. The electronic device 1 includes the above-mentioned display panel 10, display driver integrated circuit 20 and driver controller 30, which are used to optimize the display effect of the display panel 10.

[0121] Figure 5 is a driving timing diagram of a display panel provided in an embodiment of this application. Figure 6A is a light emission waveform diagram of a first display scene provided in an embodiment of this application, and Figure 6B is a light emission waveform diagram of a second display scene provided in an embodiment of this application. In this embodiment, the first display scene includes, for example, a dynamic frame scene, and the second display scene includes, for example, a static frame scene. Alternatively, the first display scene includes, for example, a dark mode scene, and the second display scene includes, for example, a light mode scene. This embodiment provides a display driver integrated circuit 20, which is used to provide a start signal to the display panel 10 to drive the display panel 10 to display an image.

[0122] The display driver integrated circuit 20 is also used to receive a first instruction and output a first anode reset start signal STV-s11 and a first light emission control start signal STV-em1, as shown in Figure 5, to the display panel 10, for example, when the display panel 10 enters a first display scene. In the first display scene, in one image frame, the first anode reset start signal STV-s11 includes N first anode reset pulses, and the first light emission control start signal STV-em1 includes M*N first light emission control pulses. Each first anode reset pulse is followed by M first light emission control pulses, or it can be understood that M first light emission control pulses form a repeating unit. Among the M first light emission control pulses, the width of the first W first light emission control pulses is less than the width of the remaining M W first light emission control pulses. N and W are integers greater than or equal to 1, M is an integer greater than 1, and W... <M。

[0123] Figure 5 illustrates an image frame where the first anode reset start signal STV-s11 includes three first anode reset pulses, and the first light emission control start signal STV-em1 includes four * three first light emission control pulses, with each first anode reset pulse followed by four first light emission control pulses. For example, the frequency of the first anode reset start signal STV-s11 is 360 Hz, and the frequency of the first light emission control start signal STV-em1 is 1440 Hz. Alternatively, the first anode reset start signal STV-s11 can include four first anode reset pulses, and the first light emission control start signal STV-em1 can include three * four first light emission control pulses, with each first anode reset pulse followed by three first light emission control pulses. This embodiment is merely illustrative and does not constitute any limitation.

[0124] Four first emission control pulses constitute a repeating unit. Within each repeating unit, the width of the first W first emission control pulses is smaller than the width of the (W+1)th to (Mth)th first emission control pulses. Alternatively, this can be understood as the width of the first few first emission control pulses being smaller, and the width of the later few being larger. Figure 5 illustrates this with an example where the width of the first emission control pulse is small, and the width of the remaining three is large. Alternatively, the width of the first two first emission control pulses can be small, and the width of the remaining two is large. In this case, the widths of the first two first emission control pulses can be equal or unequal.

[0125] In some embodiments, the width of the first W first light-emitting control pulses is less than or equal to 16H. For example, the width of the first W first light-emitting control pulses is 16H, 12H, 10H, 8H, or 4H, etc. H is the duration of the data voltage written to a row of pixel circuits 11 in the display panel 10, and the pulse width is the duration of the enable signal in one pulse cycle. The enable signal is, for example, a low-level signal.

[0126] For example, in each repeating unit, the width of the first first emission control pulse is 10H, and the width of the remaining three first emission control pulses is 25H.

[0127] In the first display scenario, reducing the width of the first W (e.g., the first) first emission control pulses of each repeating unit in the first emission control start signal STV-em1 after anode reset can reduce the emission brightness corresponding to the first W first emission control pulses. Originally, due to the anode reset effect, the emission brightness under the first W first emission control pulses is weaker than that under the remaining first emission control pulses. Reducing the width of the first W first emission control pulses further reduces the emission brightness under the first W first emission control pulses, making it almost negligible. As shown in Figure 6A, this changes the emission waveform under each repeating unit from multi-peak (e.g., double-peak) to a single-peak, achieving a uniform actual emission waveform. That is, the consistency of emission brightness is relatively high, which helps to improve the ghosting problem.

[0128] In some embodiments, after entering the first display scene, the display driver integrated circuit 20 also triggers compensation. When the display driver integrated circuit 20 outputs a first light emission control start signal STV-em1 to the display panel 10, it also outputs a second compensation data voltage to the display panel 10. By performing OD compensation on the display panel 10, the brightness uniformity can be further improved, and the display ghosting problem can be mitigated.

[0129] This application does not limit the specific compensation method for the second compensated data voltage. Compensation schemes in related technologies are all applicable to this application, as long as the brightness in the first display scene is uniform. Compensation can be performed on the data voltage under a portion of pulses in an image frame, or on the data voltage under all pulses in an image frame. Compensation can be performed on the data voltage of a portion of pixel circuit rows in an image frame, or on the data voltage of all pixel circuit rows in an image frame. The compensation coefficients for the data voltage in different rows can be different, and the method for determining the compensation coefficients can be any compensation coefficient determination method used in OD compensation in related technologies.

[0130] In some embodiments, the display driver integrated circuit 20 is further configured to receive a second instruction and output a second anode reset start signal STV-s12 and a second light emission control start signal STV-em2, as shown in FIG. 5, to the display panel 10, for example, when the display panel 10 enters a second display scene. In the second display scene, in an image frame, the second anode reset start signal STV-s12 includes O second anode reset pulses, and the second light emission control start signal STV-em2 includes P*O second light emission control pulses. Each second anode reset pulse is followed by P second light emission control pulses, or it can be understood that P second light emission control pulses constitute a repeating unit. Among the P second light emission control pulses, the width of the first Q second light emission control pulses is greater than the width of the remaining PQ second light emission control pulses; O and Q are integers greater than or equal to 1, P is an integer greater than 1, and Q <P。

[0131] Figure 5 illustrates an image frame where the second anode reset start signal STV-s12 includes three second anode reset pulses, and the second light emission control start signal STV-em2 includes four * three second light emission control pulses, with each second anode reset pulse followed by four second light emission control pulses. For example, the frequency of the second anode reset start signal STV-s12 is 360 Hz, and the frequency of the second light emission control start signal STV-em2 is 1440 Hz. Alternatively, the second anode reset start signal STV-s12 can include four second anode reset pulses, and the second light emission control start signal STV-em2 can include three * four second light emission control pulses, with each second anode reset pulse followed by three second light emission control pulses. This embodiment is merely illustrative and does not constitute any limitation.

[0132] Four second emission control pulses constitute a repetition unit. Within each repetition unit, the width of the first Q second emission control pulses is greater than the width of the (Q+1)th to (Pth)th second emission control pulses. Alternatively, this can be understood as the width of the first few second emission control pulses being larger and the width of the later few being smaller. Figure 5 illustrates this with an example where the width of the first second emission control pulse is large, and the width of the remaining three second emission control pulses is small. Alternatively, the width of the first two second emission control pulses can be large, and the width of the remaining two second emission control pulses can be small. In this case, the widths of the first two second emission control pulses can be equal or unequal.

[0133] For example, in each repeating unit, the width of the first second emission control pulse is 52H, and the width of the remaining three second emission control pulses is 12H.

[0134] In the second display scenario, increasing the width of the first Q (e.g., the first) second light emission control pulses of each repeating unit in the second light emission control start signal STV-em2 after anode reset can increase the luminous brightness corresponding to the first Q second light emission control pulses. Originally, due to the anode reset, the luminous brightness under the first Q second light emission control pulses is weaker than that under the remaining second light emission control pulses. Increasing the width of the first Q second light emission control pulses will increase the luminous brightness under the first Q second light emission control pulses. As shown in Figure 6B, this makes the luminous waveform under each pulse approximately the same, achieving a more uniform actual luminous waveform. That is, the luminous brightness is always relatively uniform, which helps to improve the flicker problem.

[0135] Based on this, the display driver integrated circuit 20 provided in this application embodiment can improve the ghosting problem in the first display scene and the flickering problem in the second display scene by outputting light emission control start signals with different timings for the first display scene and the second display scene respectively, so that the first display scene and the second display scene have better display effects respectively.

[0136] In this embodiment of the application, the first and second instructions received by the display driver integrated circuit 20 are provided, for example, by the driver controller 30.

[0137] Figure 7A is a display scene switching logic diagram provided in an embodiment of this application; Figure 7B is a display interface scene switching diagram of a display panel provided in an embodiment of this application; and Figure 7C is a display interface scene switching diagram of another display panel provided in an embodiment of this application.

[0138] In some embodiments, as shown in FIG7A, a first instruction instructs the display panel 10 to enter a first display scene of a dynamic image frame, for driving the display panel 10 to switch display interfaces. A second instruction instructs the display panel 10 to enter a second display scene of a static image frame, for driving the display panel 10 not to switch display interfaces.

[0139] For example, as shown in Figure 7B, the first instruction includes an image refresh instruction, such as an instruction triggered when the drive controller 30 sends image data to the display driver integrated circuit 20. The second instruction includes a self-refresh instruction, at which point the image data is fixed and there is no new image data. The drive controller 30 sends a self-refresh instruction to the display driver integrated circuit 20.

[0140] Optionally, if the current display scene is a dynamic frame scene, the drive controller 30 sends new image data to the display driver integrated circuit 20 and sends an image refresh command to the display driver integrated circuit 20, and the display driver integrated circuit 20 still enters the dynamic frame scene.

[0141] Alternatively, optionally, if the current display scene is a static frame scene, the drive controller 30 sends new image data to the display driver integrated circuit 20 and sends an image refresh command to the display driver integrated circuit 20, causing the display driver integrated circuit 20 to enter a dynamic frame scene. For example, as shown in Figure 7B, the display panel 10 displays a first display interface. The first display interface can be a display interface in a dynamic frame scene or a display interface in a static frame scene. After receiving the first command, the display driver integrated circuit 20 sends the first light emission control start signal STV-em1 shown in Figure 5 to the display panel 10. Simultaneously, the display driver integrated circuit 20 also sends a data voltage corresponding to the image data to the display panel 10. At this time, the data voltage can be a compensated data voltage or an uncompensated data voltage. After receiving the first light emission control start signal STV-em1, the display panel 10 displays the corresponding second display interface based on the data voltage. At this time, the display interface of the display panel 10 switches from the first display interface to the second display interface.

[0142] Alternatively, if the current display scene is a dynamic frame scene, the drive controller 30 does not send new image data to the display driver integrated circuit 20, but sends a self-refresh instruction to the display driver integrated circuit 20, and the display driver integrated circuit 20 enters a static frame scene.

[0143] Alternatively, if the current display scene is a static frame scene, the drive controller 30 does not send new image data to the display driver integrated circuit 20, but sends a self-refresh command to the display driver integrated circuit 20, and the display driver integrated circuit 20 still enters the static frame scene.

[0144] For example, as shown in Figure 7C, display panel 10 displays a third display interface. The third display interface can be a display interface in a dynamic frame scene or a display interface in a static frame scene. After receiving the second instruction, display driver integrated circuit 20 sends the second light emission control start signal STV-em2 shown in Figure 5 to display panel 10. Simultaneously, display driver integrated circuit 20 also sends a data voltage corresponding to the third display interface to display panel 10. This data voltage can be a compensated data voltage or an uncompensated data voltage. After receiving the second light emission control start signal STV-em2, display panel 10 maintains the display of the third display interface based on the data voltage. At this time, the display interface of display panel 10 always remains the third display interface.

[0145] In dynamic frame scenes, the display interface is constantly changing, resulting in jumps from low to high grayscale, leading to severe ghosting. In static frame scenes, although the display interface remains unchanged, the brightness of the light emission changes constantly, causing severe flickering. This application's embodiment addresses this by using a first light emission control start signal STV-em1 to drive the display panel 10 in dynamic frame scenes, ensuring uniform brightness and improving ghosting. Similarly, by using a second light emission control start signal STV-em2 to drive the display panel 10 in static frame scenes, uniform brightness is achieved, further improving flickering.

[0146] Figure 8A is a scene switching diagram of the display interface of another display panel provided in the embodiment of this application, and Figure 8B is a scene switching diagram of the display interface of another display panel provided in the embodiment of this application.

[0147] In other embodiments, specifically in this application, the display driver integrated circuit 20 receives a first instruction and enters a first mode, and receives a second instruction and enters a second mode. The first mode includes a dark mode, and the second mode includes a light mode. A dark mode represents a display mode where the background of the display panel is dark and the text is light, while a light mode represents a display mode where the background of the display panel is light and the text is dark. Dark colors are, for example, black or gray, and light colors are, for example, white.

[0148] For example, a first instruction instructs the display panel 10 to enter dark mode, and a second instruction instructs the display panel 10 to enter light mode. The electronic device can enter dark mode or light mode, or switch between dark mode and light mode, by receiving user input.

[0149] For example, the first instruction includes a dark mode activation instruction, whereby the drive controller 30 determines the user's instruction to enter dark mode based on the touch position and sends the first instruction to enter dark mode to the display driver integrated circuit 20. The second instruction includes a light mode activation instruction, whereby the drive controller 30 determines the user's instruction to enter light mode based on the touch position and sends the second instruction to enter light mode to the display driver integrated circuit 20.

[0150] For example, as shown in Figure 8A, when the current display scene is in dark mode, the drive controller 30 sends a second instruction to the display driver integrated circuit 20 to enter light mode. The display driver integrated circuit 20 switches to light mode and sends a second light emission control start signal STV-em2 to the display panel 10. The display panel 10 receives the second light emission control start signal STV-em2, and the display interface enters light mode.

[0151] As shown in Figure 8B, the current display scene is in light mode. The drive controller 30 sends a first instruction to the display driver integrated circuit 20 to enter dark mode. The display driver integrated circuit 20 switches to dark mode and sends a first light emission control start signal STV-em1 to the display panel 10. The display panel 10 receives the first light emission control start signal STV-em1, and the display interface enters dark mode.

[0152] In dark mode, the brightness jumps are significant when transitioning from low to high grayscale, resulting in severe ghosting. Similarly, in light mode, the constantly switching brightness causes significant flickering. This application addresses this issue by using a first light emission control start signal STV-em1 to drive the display panel 10 in dark mode, ensuring uniform brightness and thus improving ghosting. Furthermore, by using a second light emission control start signal STV-em2 to drive the display panel 10 in light mode, the brightness is made more uniform, further reducing flickering.

[0153] Figure 9A is a driving timing diagram of another display panel provided in an embodiment of this application, and Figure 9B is a display scene switching diagram provided in an embodiment of this application. Figure 10 is a light emission waveform diagram under three display scenes provided in an embodiment of this application.

[0154] In some embodiments, as shown in FIG9A, the display driver integrated circuit 20 is further configured to enter a third display scene, and the display driver integrated circuit 20 outputs a third light emission control start signal STV-em3 to the display panel 10. In the third display scene, in an image frame, the third light emission control start signal STV-em3 includes a plurality of third light emission control pulses of equal width. For example, in the third display scene, the display driver integrated circuit 20 also outputs a third anode reset start signal STV-s13 to the display panel 10, the third anode reset start signal STV-s13 including one or more third anode reset pulses, and the width of the third light emission control pulse following each third anode reset pulse is equal.

[0155] For example, the width of the third anode reset pulse is greater than the width of the Wth first anode reset pulse, but less than the width of the Qth second anode reset pulse.

[0156] For example, as shown in Figure 9B, when the received instruction is the first instruction, before outputting the first light emission control start signal STV-em1 to the display panel 10, the third display scene is entered, and the third light emission control start signal STV-em3 is output to the display panel 10.

[0157] Alternatively, for example, if the received instruction is the second instruction, before outputting the second light emission control start signal STV-em2 to the display panel 10, the third display scene is entered, and the third light emission control start signal STV-em3 is output to the display panel 10.

[0158] For example, if the current display scene is a static frame scene, after receiving the first instruction to refresh the image, the display panel 10 will switch from the static frame scene to the dynamic frame scene. Therefore, before entering the dynamic frame scene, it first enters the aforementioned third display scene.

[0159] Alternatively, for example, if the current display scene is a dynamic frame scene, after receiving the second instruction to keep refreshing, the display panel 10 will switch from the dynamic frame scene to the static frame scene. Then, before entering the static frame scene, it will first enter the aforementioned third display scene.

[0160] For example, if the current display scene is a light mode scene, after receiving the first instruction to enter the dark mode scene (e.g., when the user is using it), the display panel 10 will switch from the light mode scene to the dark mode scene. Therefore, before entering the dark mode scene, it first enters the aforementioned third display scene.

[0161] Alternatively, for example, if the current display scene is a dark mode scene, after receiving a second instruction to switch to a light mode scene, the display panel 10 will switch from a dark mode scene to a light mode scene. Therefore, before entering the light mode scene, the aforementioned third display scene will be entered first.

[0162] Alternatively, this can be understood as adding a transition frame in the third display scene before the display scene switch when the display panel 10 needs to switch display scenes. This may include one transition frame or multiple transition frames. When the display panel 10 remains in the first display scene or the second display scene, the aforementioned transition frames may or may not be present between image frames.

[0163] As shown in Figure 10, by setting a third light emission control start signal STV-em3 with a fixed pulse width, the instantaneous brightness in the third display scene is adjusted so that the average brightness in the third display scene can be between the light emission brightness in the first display scene and the light emission brightness in the second display scene. This serves as a transition frame between the light emission brightness in the first display scene and the light emission brightness in the second display scene, reducing the brightness difference when switching between the first display scene and the second display scene.

[0164] In some embodiments, the display driver integrated circuit 20 is further configured to output a first compensation data voltage to the display panel 10 when outputting a third light emission control start signal STV-em3 to the display panel 10 after entering the third display scene. By adjusting the first compensation data voltage in the third display scene, the average brightness in the third display scene can be made the same as or approximately the same as the average brightness in the first display scene and / or the average brightness in the second display scene, thereby achieving seamless switching between the first display scene and the second display scene.

[0165] The specific compensation method for the first compensation data voltage is not limited in the embodiments of this application. The compensation schemes in related technologies are all applicable to the embodiments of this application, as long as the average brightness in the third display scene is the same as or approximately the same as the average brightness in the first display scene and / or the average brightness in the second display scene.

[0166] For example, when switching from the first display scene to the second display scene, the data voltage of the third display scene is compensated by increasing the data voltage to increase brightness, so that the luminous brightness of the third display scene is as consistent as possible with that of the second display scene. In this switch, the second display scene is the target display scene. That is, the luminous brightness of the third display scene is as consistent as possible with that of the target display scene. By comparing the data voltage of the third display scene with the data voltage of the second display scene, it can be determined whether the data voltage of the third display scene has been compensated.

[0167] Alternatively, for example, when switching from a second display scene to a first display scene, the data voltage of the third display scene is compensated by reducing the data voltage to decrease brightness, so that the luminous brightness of the third display scene is as consistent as possible with that of the first display scene. In this switching, the first display scene is the target display scene, meaning that the luminous brightness of the third display scene is as consistent as possible with that of the target display scene.

[0168] In some embodiments, the display driver integrated circuit 20 is further configured to output a compensation initialization voltage to the display panel 10 after entering the third display scene and outputting a third light emission control start signal STV-em3 to the display panel 10. By adjusting the compensation initialization voltage in the third display scene, the average brightness in the third display scene can be made the same as or approximately the same as the average brightness in the first display scene and / or the average brightness in the second display scene, thereby achieving seamless switching between the first display scene and the second display scene.

[0169] The compensation initialization voltage may include one or more of the following: the first initialization voltage of the first initialization voltage terminal Vinit1, the second initialization voltage of the second initialization voltage terminal Vinit2, and the third initialization voltage of the third initialization voltage terminal Vinit3.

[0170] This application does not limit the specific compensation method for the initial voltage. The compensation schemes in related technologies are all applicable to this application, as long as the average brightness in the third display scene is the same as or approximately the same as the average brightness in the first display scene and / or the average brightness in the second display scene.

[0171] The display driver integrated circuit 20 provided in this application embodiment can be applied in the display module 40 provided in this application embodiment. The display driver integrated circuit 20 is coupled to the display panel 10 and is used to provide the display panel 10 with a light emission control start signal STV-em and a reset start signal STV-s1. The display panel 10 includes, for example, the display panel 10 shown in FIG2B.

[0172] This application embodiment also provides a driving method for an electronic device 1, wherein the electronic device 1 includes, for example, any of the aforementioned electronic devices. The driving method for the electronic device 1 includes: a driving controller 30 sending a first instruction, a display driving integrated circuit 20 receiving the first instruction and entering the first display scene to drive the display panel 10 according to the scheme in the first display scene; and the driving controller 30 sending a second instruction, the display driving integrated circuit 20 receiving the second instruction and entering the second display scene to drive the display panel 10 according to the scheme in the second display scene.

[0173] In some embodiments, the driving method of the electronic device 1 further includes: after the display driver integrated circuit 20 receives the first instruction, before entering the first display scene, the display driver integrated circuit 20 first enters the aforementioned third display scene, drives the display panel 10 to be driven by the scheme in the third display scene, and then enters the first display scene.

[0174] In some embodiments, the driving method of the electronic device 1 further includes: after the display driver integrated circuit 20 receives the second instruction, before entering the second display scene, the display driver integrated circuit 20 first enters the third display scene, drives the display panel 10 to be driven by the scheme in the third display scene, and then enters the second display scene.

[0175] Figure 11 is a driving timing diagram of another display panel provided in an embodiment of this application.

[0176] This application embodiment also provides a display driver integrated circuit 20, which is used to provide a start signal to the display panel 10 to drive the display panel 10 to display an image.

[0177] The display driver integrated circuit 20 is also used to receive a first brightness command characterizing the first luminous brightness, and output a first reset start signal STV-s11 and a first luminous control start signal STV-em1 as shown in FIG11 to the display panel 10.

[0178] The display driver integrated circuit 20 is also used to receive a second brightness command characterizing the second luminous brightness, and output a second reset start signal STV-s12 and a second luminous control start signal STV-em2 as shown in FIG11 to the display panel 10.

[0179] The first luminous brightness is less than the set brightness, and the second luminous brightness is greater than or equal to the set brightness. The first luminous brightness can be understood as the brightness in a low-brightness display scenario, and the second luminous brightness can be understood as the brightness in a high-brightness display scenario. The set brightness is the critical dividing value between low and high brightness, and the embodiment of this application does not limit the value of the set brightness.

[0180] When the brightness requirement is less than the set brightness, the drive controller 30 sends a first brightness command to the display driver integrated circuit 20. The display driver integrated circuit 20 receives the first command and issues a first pulse timing sequence A, including a first reset start signal STV-s11 and a first light emission control start signal STV-em1.

[0181] When the brightness requirement exceeds the set brightness, the drive controller 30 sends a second brightness command to the display driver integrated circuit 20. The display driver integrated circuit 20 receives the second command and issues a second pulse timing sequence B, which includes a second reset start signal STV-s12 and a second light emission control start signal STV-em2.

[0182] The first and second brightness commands can be provided, for example, by the drive controller 30 in the electronic device 1. For instance, when a user or the CPU adjusts the brightness bar of the electronic device 1, the drive controller 30 determines the required brightness based on the touch position. If the required brightness is greater than or equal to the set brightness, a second brightness command is sent to the display driver integrated circuit 20. If the required brightness is less than the set brightness, a first brightness command is sent to the display driver integrated circuit 20.

[0183] In some embodiments, as shown in FIG11, the display panel 10 displays a first display interface, and the progress of the brightness bar in the first display interface is a first progress. The drive controller 30 determines, based on the touch position corresponding to the first progress, that the brightness requirement is less than the set brightness, and sends a first brightness command.

[0184] As shown in Figure 11, the display panel 10 displays a second display interface, where the brightness bar progress represents the second progress. The drive controller 30, based on the touch position corresponding to the second progress, determines that the brightness requirement is greater than or equal to the set brightness and sends a second brightness command. The display driver integrated circuit 20 sends a first pulse timing sequence A.

[0185] With the brightness bar progress unchanged, the brightness of the subsequent display interface on the display panel 10 also remains unchanged. After the brightness bar progress is adjusted, the drive controller 30 re-determines whether to issue a first brightness command or a second brightness command. The display driver integrated circuit 20 sends a second pulse timing sequence B.

[0186] The type of pulse timing sent by the display driver integrated circuit 20 matches the interface type of the display panel 10. For example, if the display panel 10 and the display driver integrated circuit 20 are coupled via a MIPI interface, the type of pulse timing sent by the display driver integrated circuit 20 must satisfy the data protocol of the MIPI interface.

[0187] In some embodiments, the frequency of the first reset start signal STV-s11 is f1, the frequency of the second reset start signal STV-s12 is f2, the frequency of the first light emission control start signal STV-em1 is f3, and the frequency of the second light emission control start signal STV-em2 is f4.

[0188] For example, as shown in Figure 11, the frequency f3 of the first light emission control start signal STV-em1 is less than the frequency f4 of the second light emission control start signal STV-em2. In low-brightness scenarios, reducing the frequency of the light emission control signal em can reduce the power consumption of the display driver integrated circuit 20 without affecting the display effect.

[0189] Alternatively, for example, the frequency f3 of the first light emission control start signal STV-em1 is equal to the frequency f4 of the second light emission control start signal STV-em2. The frequency of the light emission control signal em remains consistent in both low-brightness and high-brightness scenarios, eliminating the need for the display driver integrated circuit 20 to change frequencies in different scenarios, thus simplifying its structure.

[0190] Optionally, the frequency f3 of the first light emission control start signal STV-em1 is equal to 120Hz.

[0191] As described above regarding the driving method of pixel circuit 11, during the anode reset phase t, the anode reset circuit 111 is turned on, and the light emission control circuit 115 must remain off. Taking pixel circuit 11 in Figure 2A as an example, when the first control signal s1 is a low-level on signal, the light emission control signal em must be a high-level off signal. Therefore, before the first control signal s1 transitions to a low level, the light emission control signal em must first transition to a high level. In other words, the number of times the light emission control signal em transitions to a high level must be greater than or equal to the number of times the first control signal s1 transitions to a low level. That is, the frequency f3 of the first light emission control start signal STV-em1 must be greater than or equal to the frequency f1 of the first reset start signal STV-s11.

[0192] For example, as shown in Figure 11, the frequency f1 of the first reset start signal STV-s11 is equal to the frequency f3 of the first light emission control start signal STV-em1. By satisfying the frequency f1 requirement of the first reset start signal STV-s11 with the minimum frequency f3, the power consumption of the display driver integrated circuit 20 can be reduced.

[0193] Alternatively, for example, the frequency f1 of the first reset start signal STV-s11 is less than the frequency f3 of the first light emission control start signal STV-em1.

[0194] Similarly, the frequency f2 of the second reset start signal STV-s12 is less than or equal to the frequency f4 of the second light emission control start signal STV-em2.

[0195] In some embodiments, the frequency f1 of the first reset start signal STV-s11 is less than the frequency f2 of the second reset start signal STV-s12. That is, the number of times the anode of the light-emitting device is reset in a low-brightness scene is less than the number of times the anode of the light-emitting device is reset in a high-brightness scene, thus reducing the number of times the anode of the light-emitting device is reset in a low-brightness scene.

[0196] For example, the frequency f1 of the first reset start signal STV-s11 is equal to 120Hz. That is, within one image frame, the first reset start signal STV-s11 will show a low-level turn-on signal once. In other words, within one image frame, the anode of the light-emitting device will be reset once.

[0197] For example, the frequency f2 of the second reset start signal STV-s12 is greater than or equal to 3 * 120 Hz (360 Hz). That is, within one image frame, the second reset start signal STV-s12 must exhibit a low-level on signal at least three times. In other words, within one image frame, the anode of the light-emitting device must be reset at least three times. Optionally, the frequency f2 of the second reset start signal STV-s12 is an integer multiple of 360 Hz (n * 360 Hz, where n is a positive integer), for example, the frequency f2 of the second reset start signal STV-s12 is 360 Hz, 720 Hz, or 1080 Hz, etc.

[0198] By setting the frequency of the second reset start signal STV-s12 to an integer multiple of 360Hz, when the refresh rate of the display panel 10 is 120Hz, the second reset start signal STV-s12 includes 3 pulses in one image frame. When the refresh rate of the display panel 10 is 90Hz, the second reset start signal STV-s12 includes 4 pulses in one image frame. A single set of gamma timing for the second reset start signal STV-s12 can be applied to multiple refresh rates of the display panel 10. On the one hand, it eliminates the need to switch gamma timings, reducing costs. On the other hand, it enables seamless switching between different refresh rates of the display panel 10, improving the display effect of the display panel 10.

[0199] In this embodiment, the widths of the low-level pulses in the first reset start signal STV-s11 can be completely equal, not completely equal, or completely unequal. The widths of the low-level pulses in the second reset start signal STV-s12 can be completely equal, not completely equal, or completely unequal. The widths of the low-level pulses in the first light emission control start signal STV-em1 can be completely equal, not completely equal, or completely unequal. The widths of the low-level pulses in the second light emission control start signal STV-em2 can be completely equal, not completely equal, or completely unequal.

[0200] In some embodiments, after receiving the first brightness command and the second brightness command, the timing of the initialization start signal STV-s2, the compensation start signal STV-s3, and the write start signal STV-s4 output by the display driver integrated circuit 20 to the display panel 10 may be the same or different, and this application embodiment does not limit this.

[0201] The display driver integrated circuit 20 provided in this application embodiment can be applied in the display module 40 provided in this application embodiment. The display driver integrated circuit 20 is coupled to the display panel 10 and is used to provide the display panel 10 with a light emission control start signal STV-em and a reset start signal STV-s1. The display panel 10 includes, for example, the display panel 10 shown in FIG2C.

[0202] Figure 12A shows the brightness of different gray levels in a low-brightness scene according to an embodiment of this application, and Figure 12B shows the brightness of different gray levels in another low-brightness scene according to an embodiment of this application.

[0203] Resetting the anode of the light-emitting device 116 is equivalent to completely discharging the residual charge in the first parasitic capacitor C1 and the second parasitic capacitor C2, eliminating the light leakage phenomenon introduced by the residual charge when the light-emitting control circuit 115 is turned off. Under the same target brightness, the smaller the current during the light leakage stage, the lower the light emission, resulting in an increase in the operating current required to turn on normal light emission. That is, the charging current of the first parasitic capacitor C1 and the second parasitic capacitor C2 will increase. That is, the higher the frequency of the reset start signal STV-s1, the greater the charging current required by the capacitor. As shown in Figure 12A, in low-brightness scenes, when the grayscale switches from low grayscale to high grayscale, the instantaneous capacitor charging current is larger, which will cause the average brightness obtained after brightness aggregation to be too bright at the circle position (with a protrusion), thus causing the display panel 10 to have a ghosting problem. However, in high-brightness scenes, the ghosting problem can be ignored.

[0204] This embodiment of the application reduces the number of times the anode of the light-emitting device is reset in low-brightness scenarios, thereby reducing the transient overbrightness problem of the light-emitting device 116 caused by the parasitic capacitor charging current in low-brightness scenarios. As shown in Figure 12B, in low-brightness scenarios, when the grayscale switches from low to high grayscale, the overbrightness problem of the average brightness obtained after the instantaneous brightness is integrated at the circle position is improved (brightness protrusion is weakened), thereby improving the ghosting problem of the display panel 10. This achieves ghosting-free display in low-brightness scenarios and flicker-free switching between 90Hz and 120Hz in high-brightness scenarios, thus achieving the goal of optimal display effect under both high and low brightness conditions.

[0205] This application embodiment also provides a driving method for an electronic device 1, which includes, for example, any of the aforementioned electronic devices. The driving method for the electronic device 1 includes: a driving controller 30 sending a first brightness command representing a first luminous intensity; a display driving integrated circuit 20 receiving the first brightness command and outputting a first pulse timing sequence A to a display panel 10; and the driving controller 30 sending a second brightness command representing a second luminous intensity; the display driving integrated circuit 20 receiving the second brightness command and outputting a second pulse timing sequence B to the display panel 10.

[0206] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A display driving integrated circuit, characterized by comprising: The display driver integrated circuit is used to drive the display panel; The display driver integrated circuit is also used for: Upon receiving a first instruction, a first anode reset start signal and a first light emission control start signal are output to the display panel; in an image frame, the first anode reset start signal includes N first anode reset pulses, and the first light emission control start signal includes M*N first light emission control pulses, with each first anode reset pulse followed by M first light emission control pulses; among the M first light emission control pulses, the width of the first W first light emission control pulses is less than the width of the remaining M W first light emission control pulses; N and W are integers greater than or equal to 1, M is an integer greater than 1, and W <M; Upon receiving a second instruction, a second anode reset start signal and a second light emission control start signal are output to the display panel. In one image frame, the second anode reset start signal includes O second anode reset pulses, and the second light emission control start signal includes P*O second light emission control pulses. Each second anode reset pulse is followed by P second light emission control pulses. Of the P second light emission control pulses, the width of the first Q second light emission control pulses is greater than the width of the remaining PQ second light emission control pulses. O and Q are integers greater than or equal to 1, P is an integer greater than 1, and Q... <P。 2. The display driver integrated circuit of claim 1, wherein, The display driver integrated circuit is also used for: After receiving the first instruction, before outputting the first light emission control start signal to the display panel, a third light emission control start signal is output to the display panel; in an image frame, the third light emission control start signal includes a plurality of third light emission control pulses of equal width; And / or, Upon receiving the second instruction, before outputting the second light emission control start signal to the display panel, a third light emission control start signal is output to the display panel; in an image frame, the third light emission control start signal includes multiple third light emission control pulses of equal width.

3. The display driver integrated circuit of claim 2, wherein, The display driver integrated circuit is also used to: output a first compensation data voltage to the display panel when the third light emission control start signal is output to the display panel.

4. The display driver integrated circuit of claim 2 or 3, wherein, The display driver integrated circuit is also used to: output a compensation initialization voltage to the display panel when the third light emission control start signal is output to the display panel.

5. The display driver integrated circuit according to any one of claims 1 to 4, wherein, The display driver integrated circuit is also used to: output a second compensation data voltage to the display panel when the first light emission control start signal is output to the display panel.

6. The display driver integrated circuit of any one of claims 1-5, wherein, The first instruction includes an image refresh instruction, which drives the display panel to switch display interfaces; the second instruction includes a self refresh instruction, which drives the display panel not to switch display interfaces.

7. The display driver integrated circuit of any one of claims 1-5, wherein, The display driver integrated circuit receives the first instruction to enter a first mode and receives the second instruction to enter a second mode; the first mode includes a dark mode and the second mode includes a light mode; the dark mode represents a display mode in which the background of the display panel is dark and the text is light, and the light mode represents a display mode in which the background of the display panel is light and the text is dark.

8. The display driver integrated circuit of claim 7, wherein, The first instruction includes a dark mode activation instruction, and the second instruction includes a light mode activation instruction.

9. A display module, characterized by The display module includes a display driver integrated circuit and a display panel, wherein the display driver integrated circuit is coupled to the display panel; the display driver integrated circuit includes the display driver integrated circuit according to any one of claims 1-8.

10. An electronic device, comprising: The electronic device includes a drive controller and a display module, the display module being coupled to the drive controller; the display module includes the display module as described in claim 9.

11. The electronic device of claim 10, wherein, The first instruction includes an image refresh instruction, and the display panel receives the first light emission control start signal and switches from the first display interface to the second display interface; The second instruction includes a self-refresh instruction, wherein the display panel receives the second light emission control start signal and maintains the third display interface.

12. The electronic device according to claim 10, characterized in that, The first instruction includes a dark mode activation instruction, wherein the display panel receives the first light emission control start signal and the display interface enters the dark mode; the second instruction includes a light mode activation instruction, wherein the display panel receives the second light emission control start signal and the display interface enters the light mode.

13. A display driving integrated circuit, characterized by comprising: The display driver integrated circuit is used to drive the display panel; The display driver integrated circuit is also used for: Receive a first brightness command representing a first luminance, and output a first reset start signal and a first luminance control start signal to the display panel; Receive a second brightness command representing a second luminance, and output a second reset start signal and a second luminance control start signal to the display panel; Wherein, the first luminous intensity is less than the set intensity, and the second luminous intensity is greater than or equal to the set intensity; f1 is the frequency of the first reset start signal, f2 is the frequency of the second reset start signal, f3 is the frequency of the first luminous intensity control start signal, and f4 is the frequency of the second luminous intensity control start signal; f1 <f2,f3≦f4,f1≦f3,f2≦f4。 14. The display driver integrated circuit according to claim 13, characterized in that, f2 = n * 360 Hz, where n is a positive integer.

15. The display driver integrated circuit of claim 13 or 14, wherein, The display panel includes an array substrate and a plurality of light-emitting devices disposed on the array substrate; The light-emitting device includes a first electrode layer, a first light-emitting layer, a conductive connection layer, a second light-emitting layer, and a second electrode layer sequentially disposed on the array substrate.

16. A display module, characterized by The display module includes a display driver integrated circuit and a display panel, wherein the display driver integrated circuit is coupled to the display panel; the display driver integrated circuit includes the display driver integrated circuit according to any one of claims 13-15.

17. An electronic device, comprising: The electronic device includes a drive controller and a display module, the display module being coupled to the drive controller; the display module includes the display module as described in claim 16.

18. A driving method of an electronic device, characterized by, The electronic device includes a drive controller, a display driver integrated circuit, and a display panel; The driving method includes: The drive controller sends a first instruction; the display driver integrated circuit receives the first instruction and outputs a first anode reset start signal and a first light emission control start signal to the display panel; in an image frame, the first anode reset start signal includes N first anode reset pulses, and the first light emission control start signal includes M*N first light emission control pulses, with each first anode reset pulse followed by M first light emission control pulses; among the M first light emission control pulses, the width of the first W first light emission control pulses is less than the width of the remaining M*M first light emission control pulses; N and W are integers greater than or equal to 1, M is an integer greater than 1, and W... <M; The drive controller sends and receives a second instruction; the display driver integrated circuit receives the second instruction and outputs a second anode reset start signal and a second light emission control start signal to the display panel; in an image frame, the second anode reset start signal includes O second anode reset pulses, and the second light emission control start signal includes P*O second light emission control pulses, with each second anode reset pulse followed by P second light emission control pulses; of the P second light emission control pulses, the width of the first Q second light emission control pulses is greater than the width of the remaining PQ second light emission control pulses; O and Q are integers greater than or equal to 1, P is an integer greater than 1, and Q... <P。 19. The driving method according to claim 18, characterized in that, The driving method further includes: Before the display driver integrated circuit outputs the first light emission control start signal to the display panel after receiving the first instruction, the display driver integrated circuit outputs a third light emission control start signal to the display panel; in an image frame, the third light emission control start signal includes a plurality of third light emission control pulses of equal width; And / or, Before the display driver integrated circuit outputs the first light emission control start signal to the display panel after receiving the second instruction, the display driver integrated circuit outputs a third light emission control start signal to the display panel; in an image frame, the third light emission control start signal includes a plurality of third light emission control pulses of equal width.

20. The driving method according to claim 19, characterized in that, The driving method further includes: when the display driver integrated circuit outputs the third light emission control start signal to the display panel, the display driver integrated circuit also outputs a first compensation data voltage to the display panel.

21. The driving method according to claim 19 or 20, characterized in that, The driving method further includes: when the display driver integrated circuit outputs the third light emission control start signal to the display panel, the display driver integrated circuit also outputs a compensation initialization voltage to the display panel.

22. The driving method according to any one of claims 18-21, characterized in that, The driving method further includes: when the display driver integrated circuit outputs the first light emission control start signal to the display panel, the display driver integrated circuit also outputs a second compensation data voltage to the display panel.

23. A driving method of an electronic device, characterized by, The electronic device includes a drive controller, a display driver integrated circuit, and a display panel; The driving method includes: The drive controller sends a first brightness command characterizing the first luminous brightness, and the display driver integrated circuit outputs a first reset start signal and a first luminous control start signal to the display panel according to the first brightness command; The drive controller sends a second brightness command characterizing the second luminous intensity, and the display driver integrated circuit outputs a second reset start signal and a second luminous intensity control start signal to the display panel according to the second brightness command; Wherein, the first luminous intensity is less than the set intensity, and the second luminous intensity is greater than or equal to the set intensity; f1 is the frequency of the first reset start signal, f2 is the frequency of the second reset start signal, f3 is the frequency of the first luminous intensity control start signal, and f4 is the frequency of the second luminous intensity control start signal; f1 <f2,f3≦f4,f1≦f3,f2≦f4。 24. The driving method according to claim 23, wherein f2 = n * 360 Hz, where n is a positive integer.

Images