Display Driver and Display System

Abstract

The present application provides a display driver and a display system. The display driver includes a Mobile Industry Processor Interface (MIPI) circuit, a first memory, a compensation circuit, a second memory, and a processing circuit: The Mobile Industry Processor Interface (MIPI) circuit is configured to receive display data; and the MIPI circuit can be configured in a first interface mode; wherein, when the MIPI circuit is configured in the first interface mode, the MIPI circuit directly transmits the received display data to the processing circuit, the compensation circuit writes compensation data into the second memory and / or the first memory, and the processing circuit obtains the compensation data from the second memory and / or the first memory to compensate the display data, so as to drive a display panel with the compensated display data. The utilization rates of the first memory and the second memory on the display driver are relatively high, and the storage space for storing compensation data is effectively increased.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display driver and a display system. Background Art

[0002] With the continuous development of smart electronic display devices such as smartphones and notebooks, the size of the display panels of smart electronic display devices is getting larger and larger, resulting in shorter and shorter standby time of smart electronic display devices. In order to improve the standby time of smart electronic display devices, the MIPI (Mobile Industry Processor Interface) Alliance has developed the MIPI transmission protocol, in which the display driver of the MIPI COMMAND display panel, such as the display driver chip (DisplayDriver Integrated Circuit, DDIC), includes a full-frame frame buffer (Random Access Memory, RAM), which is used to store all display data. The controller reads the display data from the RAM and displays the display data on the display panel. In this way, the MIPI bus controller does not need to refresh the display regularly, which better reduces the power consumption.

[0003] Among them, due to the problem of manufacturing process in the production process of display panel, the process deposition film cannot be uniform, resulting in inconsistent and uneven brightness of the display panel, which is called Mura (spotting). At present, the problem of uneven brightness is generally eliminated by brightness compensation, but the brightness compensation data needs to be stored in RAM, which results in the current DDIC needing to add an additional RAM; that is, the DDIC includes two RAMs, one of which is used to store display data in MIPI COMMAND mode, and the other is used to store brightness compensation data.

[0004] However, in view of various application scenarios, the utilization rate of the two RAMs on the display driver is low, and the manufacturing cost of the RAM on the display driver is high, resulting in a problem of resource waste in the display driver. Summary of the invention

[0005] The display driver and display system provided in the present application are intended to solve the problem that the utilization rate of two RAMs on the display driver is low and the manufacturing cost of the RAM on the display driver is high, resulting in waste of resources in the display driver.

[0006] To solve the above technical problems, a technical solution adopted by this application is: to provide a display driver. The display driver includes: a Mobile Industry Processor Interface (MIPI) circuit, a first memory, a compensation circuit, a second memory, and a processing circuit. The Mobile Industry Processor Interface (MIPI) circuit is used to receive display data; and the MIPI circuit can be configured as a first interface mode. Wherein, when the MIPI circuit is configured as the first interface mode, the MIPI circuit directly transmits the received display data to the processing circuit, the compensation circuit writes compensation data into the second memory and / or the first memory, and the processing circuit obtains the compensation data from the second memory and / or the first memory to compensate the display data, so as to drive the display panel with the compensated display data.

[0007] Wherein, the MIPI circuit can also be configured as a second interface mode. When the MIPI circuit is configured as the second interface mode, the MIPI circuit writes the received display data into the first memory and / or the second memory, and the processing circuit obtains the display data from the first memory and / or the second memory, and drives the display panel with the display data.

[0008] Wherein, it further includes a third memory connected to the compensation circuit. When the MIPI circuit is configured as the first interface mode, the MIPI circuit directly transmits the received display data to the processing circuit, the compensation circuit writes first-type compensation data into the second memory and / or the first memory, writes second-type compensation data into the third memory and / or the first memory, and the processing circuit receives the first-type compensation data from the second memory and / or the first memory to perform first-type compensation on the display data; the processing circuit receives the second-type compensation data from the third memory and / or the first memory to perform second-type compensation on the display data, so as to drive the display panel with the compensated display data.

[0009] Wherein, the first-type compensation data includes brightness compensation data, and the second-type compensation data includes under-screen camera compensation data or aging compensation data.

[0010] Wherein, the compensation circuit further includes a compensation data interface, and the compensation circuit writes the compensation data into the second memory and / or the first memory through the compensation data interface.

[0011] Preferably, the compensation data interface is a serial interface.

[0012] Among them, the MIPI circuit further includes an MIPI interface and an address control unit. The address control unit receives an address command through the MIPI interface. The address command includes address space information corresponding to the display data or address space information corresponding to the compensation data. The address control unit controls the corresponding address space of the first memory and / or the second memory to be opened based on the address command, so that the display data or the compensation data is written into the corresponding address space of the first memory and / or the second memory.

[0013] Among them, when the MIPI circuit is configured in the second interface mode, the MIPI circuit writes the received display data into the first memory and the second memory. The processing circuit selectively reads the display data from the first memory to drive the display panel to display a first picture, or selectively reads the display data from the second memory to drive the display panel to display a second picture. The display effects of the first picture and the second picture are different.

[0014] Among them, when the MIPI circuit is configured in the second interface mode, the processing circuit can freely switch between the state of reading the display data from the first memory and the state of reading the display data from the second memory, so that the display panel can switch between the first picture and the second picture.

[0015] Among them, the first interface mode is a video mode; the second interface mode is a command mode.

[0016] To solve the above technical problems, another technical solution adopted by this application is: to provide a display system. The display system includes: a display panel and a display driver. The display driver is the display driver involved above and is configured to drive the display panel.

[0017] The beneficial effects of the embodiments of the present application are different from the prior art: The display driver provided by the embodiments of the present application, by setting a compensation circuit, enables the compensation circuit to write compensation data into the second memory and / or the first memory. The processing circuit receives display data and receives compensation data from the second memory and / or the first memory to compensate the display data, and then drives the display panel by means of the compensated display data, which can avoid the problem of uneven brightness during the display process of the display panel. At the same time, by writing the compensation data into the first memory and / or the second memory, the compensation data can not only be selectively stored in the first memory, but also be selectively stored in the second memory, or selectively stored in both the first memory and the second memory, greatly increasing the positions where the compensation data can be stored, and effectively increasing the storage space for the compensation data without adding a memory, that is, without increasing the cost, and improving the utilization rate of the first memory and the second memory. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a display driver provided by an embodiment of the present application;

[0019] Figure 2 is Figure 1 A data flow diagram of compensation data when the corresponding display driver is configured in the first interface mode;

[0020] Figure 3 is Figure 1 A data flow diagram of display data when the corresponding display driver is configured in the second interface mode;

[0021] Figure 4 It is a schematic structural diagram of a display driver provided by another embodiment of the present application;

[0022] Figure 5 It is a schematic structural diagram of a display driver provided by a specific embodiment of the present application;

[0023] Figure 6 It is a schematic structural diagram of a display driver provided by another embodiment of the present application;

[0024] Figure 7 It is a schematic structural diagram of a display system provided by an embodiment of the present application.

[0025] DESCRIPTION OF THE REFERENCE NUMERALS

[0026] Display driver 10; MIPI circuit 1; MIPI interface 11; Data controller 13; Compressor 14; Decompressor 15; Compensation circuit 2; Compensation data interface 21; Processing circuit 3; Image enhancement unit 31; SPR 32; Luminance compensation unit 33; First memory 4; Second memory 5; Address control unit 6; Decoder 61; Address controller 62; Third memory 7; Display panel 20. Detailed implementation

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0028] The terms "first", "second", and "third" in the present application are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", and "third" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. All directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices.

[0029] Referring to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0030] The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0031] Please refer to Figure 1 , Figure 1Schematic diagram of the architecture of a display driver provided by an embodiment of the present application; in this embodiment, a display driver 10 is provided. The display driver 10 can be used to drive a display panel to display an image. The display driver 10 includes a Mobile Industry Processor Interface (MIPI) circuit 1, a compensation circuit 2, a processing circuit 3, a first memory 4, and a second memory 5.

[0032] Among them, the MIPI circuit 1 includes an MIPI interface 11. The MIPI circuit 1 can be configured in a first interface mode and a second interface mode. The first interface mode can be a video mode; the second interface mode is a command mode. The compensation circuit 2 includes a compensation data interface 21; the second memory 5 is connected to the compensation data interface 21. The compensation data interface 21 can be a Serial Peripheral Interface (SPI). The MIPI circuit 1 and the compensation circuit 2 are respectively connected to the processing circuit 3.

[0033] Combined with Figure 1 and Figure 2 , Figure 2 is Figure 1 The data flow diagram of the compensation data when the corresponding display driver is configured in the first interface mode; when the MIPI circuit 1 is configured in the first interface mode, the MIPI circuit 1 directly transmits the display data received through the MIPI interface 11 to the processing circuit 3. The compensation circuit 2 writes the compensation data into the first memory 4 and / or into the second memory 5 through the compensation data interface 21. The processing circuit 3 receives the display data from the MIPI interface 11, and receives the compensation data from the first memory 4 through the data line a4 and / or from the second memory 5 through the data line a5 to compensate the display data, so as to drive the display panel with the compensated display data; thereby avoiding the problem of uneven brightness during the display process of the display panel. Among them, by writing the compensation data into the first memory 4 and / or the second memory 5, the compensation data can not only be selectively stored in the first memory 4, but also be selectively stored in the second memory 5, or selectively stored in both the first memory 4 and the second memory 5, greatly increasing the locations where the compensation data can be stored, and effectively increasing the storage space for storing the compensation data without adding a memory, that is, without increasing the cost, and improving the utilization rate of the first memory 4 and the second memory 5.

[0034] In order to further improve the utilization rate of the first memory 4 and the second memory 5 and reduce the waste of resources of the display driver 10. Combined with Figure 1 and Figure 3 , Figure 3 is Figure 1Data flow diagram of display data when the corresponding display driver is configured in the second interface mode; when the MIPI circuit 1 is configured in the second interface mode, the MIPI circuit 1 writes the display data received through the MIPI interface 11 into the first memory 4 and / or into the second memory 5, so as to store the display data received from the MIPI interface 11 through the first memory 4 and / or the second memory 5, such that the display data can be selectively stored not only in the first memory 4, but also selectively stored in the second memory 5, or selectively stored in both the first memory 4 and the second memory 5, greatly increasing the storage locations of the display data, and effectively increasing the storage space for storing the display data without adding memories, i.e., without increasing costs, and further improving the utilization rate of the first memory 4 and the second memory 5.

[0035] In a specific embodiment, when the MIPI circuit 1 is configured in the second interface mode, the processing circuit 3 can specifically obtain the display data from the first memory 4 through the data line b3 and / or from the second memory 5 through the data line b4, and drive the display panel with the display data to perform screen display.

[0036] Specifically, when the MIPI circuit 1 is configured in the second interface mode, the MIPI circuit 1 writes the display data into the first memory 4 and the second memory 5 through the MIPI interface 11. The processing circuit 3 selectively obtains the display data from the first memory 4 through the data line b3 to drive the display panel to display the first screen, or selectively obtains the display data from the second memory 5 through the data line b4 to drive the display panel to display the second screen. Among them, the display data in the first memory 4 is different from the display data in the second memory 5, and the display effects of the first screen and the second screen are different; in this way, it is possible to realize the dynamic display of two screens.

[0037] Further, when the MIPI circuit 1 is configured in the second interface mode, the processing circuit 3 can freely switch between the state of obtaining the display data from the first memory 4 and the state of obtaining the display data from the second memory 5, so that the display panel can switch between the first screen and the second screen; thus, in the Always on display (AOD) mode, the display screens in the first memory 4 and the second memory 5 can be dynamically switched to improve the display effect of the AOD mode, meet the user's viewing experience, and improve the utilization rate of the first memory 4 and the second memory 5.

[0038] In another embodiment, refer to Figure 4 , Figure 4Schematic diagram of the architecture of a display driver provided by another embodiment of the present application; The MIPI circuit 1 further includes an address control unit 6 connected to the MIPI interface 11; The address control unit 6 is connected to the first memory 4 through an address control line c1 and connected to the second memory 5 through an address control line c2. The MIPI circuit 1 receives an address command through the MIPI interface 11; The address command includes address space information corresponding to display data or address space information of compensation data. When the MIPI circuit 1 is configured in the first interface mode, the address control unit 6 controls the corresponding address spaces of the first memory 4 and / or the second memory 5 to be opened based on the address space information of the compensation data in the address command, so that the compensation data is written into the corresponding address spaces of the first memory 4 and / or the second memory 5. When the MIPI circuit 1 is configured in the second interface mode, the address control unit 6 controls the corresponding address spaces of the first memory 4 and / or the second memory 5 to be opened based on the address space information corresponding to the display data in the address command, so that the display data is written into the corresponding address spaces of the first memory 4 and / or the second memory 5.

[0039] In a specific embodiment, refer to Figure 5 , Figure 5 Schematic diagram of the architecture of a display driver provided by a specific embodiment of the present application; The display driver 10 further includes a data controller 13, a compressor 14, and a decompressor 15. Among them, the input end of the data controller 13 is connected to the MIPI interface 11, and the output end of the data controller 13 is connected to the input end of the compressor 14. The output end of the compressor 14 is connected to the first memory 4 and the second memory 5 to compress the display data received from the MIPI through the compressor 14 and then store it in the first memory 4 and / or the second memory 5, which can reduce the occupied space of the display data in the first memory 4 and / or the second memory 5. Thus, when setting the first memory 4 and the second memory 5 on the display driver 10, the memory capacities of these two memories can be relatively small to save costs. The input end of the decompressor 15 is connected to the first memory 4 and the second memory 5, and the output end of the decompressor 15 is connected to the processing circuit 3 to decompress the compressed display data in the first memory 4 and the second memory 5 and then output it to the processing circuit 3 for processing.

[0040] The processing circuit 3 specifically includes an image enhancement unit 31, an SPR 32, and a brightness compensation unit 33; Among them, the specific structures and functions of the image enhancement unit 31, the SPR 32, and the brightness compensation unit 33 can refer to the relevant descriptions of existing related structures and will not be elaborated here.

[0041] The address control unit 6 specifically includes a decoder 61 and an address controller 62. Among them, the input end of the decoder 61 is connected to the MIPI interface 11 to receive an address command through the MIPI interface 11, then decode the address command, and output corresponding instructions through its output end. The input end of the address controller 62 is connected to the output end of the decoder 61, and the output end of the address controller 62 is respectively connected to the input ends of the first memory 4 and the second memory 5. The address controller 62 controls the corresponding address spaces of the first memory 4 and / or the second memory 5 to be opened based on the instructions corresponding to the address commands output by the decoder 61, so that display data or compensation data can be written into the corresponding address spaces of the first memory 4 and / or the second memory 5.

[0042] In another embodiment, refer to Figure 6 , Figure 6 which is a schematic diagram of the architecture of the display driver provided by another embodiment of this application. Different from the display driver 10 provided in the above embodiment, the display driver 10 provided in this embodiment further includes a third memory 7. The third memory 7 is connected to the MIPI interface 11 of the MIPI circuit 1.

[0043] In this embodiment, when the MIPI circuit 1 is configured in the first interface mode, the MIPI circuit 1 directly transmits the display data received through the MIPI interface 11 to the processing circuit 3. The compensation circuit 2 writes the first type of compensation data into the second memory 5 and / or into the first memory 4, and writes the second type of compensation data into the third memory 7 and / or into the first memory 4 through the data line a6. The processing circuit 3 receives the display data from the MIPI interface 11, and receives the first type of compensation data from the second memory 5 through the data line a5 and / or from the first memory 4 through the data line a4 to perform the first type of compensation on the display data; receives the second type of compensation data from the third memory 7 through the data line a7 and / or from the first memory 4 through the data line a4 to perform the second type of compensation on the display data, so as to drive the display panel with the compensated display data.

[0044] Among them, the first type of compensation data includes brightness compensation data to compensate the brightness of the display panel, making the display brightness of the display panel more uniform. The second type of compensation data includes under-screen camera compensation data or aging compensation data. Among them, by making the second type of compensation data include under-screen camera compensation data, the display data can be compensated through the under-screen camera compensation data to reduce the display brightness difference between the under-screen camera area and other areas of the display panel, thereby improving the overall display effect of the display panel. By making the second type of data include aging compensation data, the display data can be compensated through the aging compensation data to reduce the brightness difference of the display panel caused by other aging reasons such as the aging of the lines of the display panel, and thus the overall display effect of the display panel can be improved.

[0045] In a specific embodiment, the first memory 4, the second memory 5, and / or the third memory 7 may be a random access memory (RAM). The storage spaces of the first memory 4, the second memory 5, and the third memory 7 may be the same or different. In a specific embodiment, since the third memory 7 is only used to store the second type of compensation data and the required storage space is relatively small, the storage space of the third memory 7 may be smaller than the storage spaces of the first memory 4 and the second memory 5 to reduce costs. Specifically, the storage space of the third memory 7 may be 1.6 Mbits. Further, the storage spaces of the first memory 4 and the second memory 5 may be less than 30 Mbits to further reduce the manufacturing costs of the two memories without affecting the display driver 10, thereby reducing the overall manufacturing cost of the display driver 10. Specifically, the storage space of the first memory 4 may be 26.9 Mbits (1200×24×2800×1 / 3); where 1 / 3 refers to 1 / 3 compression. The storage space of the second memory 5 may be 16 Mbits.

[0046] In a specific embodiment, as Figure 3 shown, the display driver 10 further includes a crystal oscillator, a timing controller, a voltage / level converter (Level Shift, LS), a digital to analog converter (Digital to analog converter, DAC), etc. The specific connection manners and functions of these structures are the same as or similar to those of the existing display driver 10, and the same or similar technical effects can be achieved. For details, reference can be made to the prior art and will not be elaborated herein.

[0047] The display driver 10 provided by the embodiment of the present application sets the compensation circuit 2, so that the compensation circuit 2 writes the compensation data into the second memory 5 and / or the first memory 4. The processing circuit 3 receives the display data and receives the compensation data from the second memory 5 and / or the first memory 4 to compensate the display data, and drives the display panel with the compensated display data, which can avoid the problem of uneven brightness during the display process of the display panel. At the same time, by writing the compensation data into the first memory 4 and / or the second memory 5, the compensation data can not only be selectively stored in the first memory 4, but also be selectively stored in the second memory 5, or selectively stored in both the first memory 4 and the second memory 5, greatly increasing the positions where the compensation data can be stored, and effectively increasing the storage space for storing the compensation data without adding a memory, that is, without increasing costs, and improving the utilization rate of the first memory 4 and the second memory 5.

[0048] See Figure 7 ,Figure 7 The structural schematic diagram of the display system provided by an embodiment of the present application. In this embodiment, a display system is further provided, and the display system includes a display driver 10 and a display panel 20.

[0049] The display driver 10 is used to drive the display panel 20 to display an image. The display driver 10 is the display driver 10 provided by any of the above embodiments, and its specific structure and function can refer to the specific structure and function of the display driver 10 provided by the above embodiments, and the same or similar technical effects can be achieved, which will not be elaborated herein.

[0050] The display panel 20 can be a rigid screen or a flexible screen, and is used to display an image during operation. The display panel 20 may include an anode layer, an organic film layer, a cathode layer, etc. that are stacked in sequence. The organic film layer may at least include, but is not limited to, a hole injection layer, a hole transport layer, an organic light-emitting layer, an electron transport layer, and an electron injection layer that are stacked in sequence. Under the drive of a certain voltage, electrons and holes are respectively injected from the cathode layer and the anode layer into the electron transport layer and the hole transport layer, and the electrons and holes respectively migrate to the organic light-emitting layer, meet in the organic light-emitting layer, form excitons and excite the luminescent molecules to generate light. The specific structure and function of the display panel 20 can refer to the specific structure and function of the existing display panel, which will not be elaborated herein.

[0051] Of course, in a specific embodiment, the display system further includes other structures such as a main controller, etc. For details, reference can be made to the relevant structures of the existing display system, which will not be elaborated herein.

[0052] In several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, indirect couplings or communication connections of devices or units, and can be in electrical, mechanical, or other forms.

[0053] In addition, in each embodiment of the present application, each functional unit can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated units can be implemented in the form of hardware or in the form of software functional units.

[0054] The above are only the implementation manners of this application, and do not thus limit the patent scope of this application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of this application, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of this application.

Claims

1. A display driver, characterized in that, Comprising a Mobile Industry Processor Interface (MIPI) circuit, a first memory, a compensation circuit, a second memory, a processing circuit, and a third memory: The Mobile Industry Processor Interface (MIPI) circuit is configured to receive display data; and the MIPI circuit can be configured in a first interface mode; Wherein, when the MIPI circuit is configured in the first interface mode, the MIPI circuit directly transmits the received display data to the processing circuit, the compensation circuit writes compensation data into the second memory and / or the first memory, and the processing circuit obtains the compensation data from the second memory and / or the first memory to compensate the display data, so as to drive a display panel with the compensated display data; The third memory is connected to the compensation circuit; When the MIPI circuit is configured in the first interface mode, the MIPI circuit directly transmits the received display data to the processing circuit, the compensation circuit writes first-type compensation data into the second memory and / or the first memory, and writes second-type compensation data into the third memory and / or the first memory. The processing circuit receives the first-type compensation data from the second memory and / or the first memory to perform first-type compensation on the display data; the processing circuit receives the second-type compensation data from the third memory and / or the first memory to perform second-type compensation on the display data, so as to drive the display panel with the compensated display data.

2. The display driver according to claim 1, wherein: The MIPI circuit can also be configured in a second interface mode. When the MIPI circuit is configured in the second interface mode, the MIPI circuit writes the received display data into the first memory and / or the second memory, and the processing circuit obtains the display data from the first memory and / or the second memory, and drives the display panel with the display data.

3. The display driver according to claim 1, wherein The first-type compensation data includes brightness compensation data, and the second-type compensation data includes under-screen camera compensation data or aging compensation data.

4. The display driver according to any one of claims 1-3, wherein: The compensation circuit includes a compensation data interface, and the compensation circuit writes the compensation data into the second memory and / or the first memory through the compensation data interface.

5. The display driver according to claim 4, wherein: The compensation data interface is a serial interface.

6. The display driver according to any one of claims 1 to 3, characterized in that, The MIPI circuit further includes a MIPI interface and an address control unit. The address control unit receives an address command through the MIPI interface; the address command includes address space information corresponding to the display data or address space information corresponding to the compensation data; The address control unit controls the opening of corresponding address spaces of the first memory and / or the second memory based on the address command, so that the display data or the compensation data is written into the corresponding address spaces of the first memory and / or the second memory.

7. The display driver according to claim 2, wherein when the MIPI circuit is configured in the second interface mode, the MIPI circuit writes the received display data into the first memory and the second memory, and the processing circuit selectively reads the display data from the first memory to drive the display panel to display a first picture, or selectively reads the display data from the second memory to drive the display panel to display a second picture, and the display effects of the first picture and the second picture are different.

8. The display driver according to claim 7, wherein when the MIPI circuit is configured in the second interface mode, the processing circuit can freely switch between the state of reading the display data from the first memory and the state of reading the display data from the second memory, so that the display panel can switch between the first picture and the second picture.

9. The display driver according to claim 2, wherein the first interface mode is a video mode; the second interface mode is a command mode.

10. A display system, characterized in that, Comprising: a display panel; a display driver, which is the display driver according to any one of claims 1-9 and is configured to drive the display panel.

Images