A display chip, a display control method of the display chip, and a display device

Abstract

The application discloses a display chip, a display control method of the display chip and a display device, and relates to the technical field of display chips. The display chip comprises a display control module and a dimming control module. The display control module receives display-related data of a frame of image, determines first image data and first dimming data based on the display-related data, and sends the first image data to a display panel and the first dimming data to the dimming control module. The dimming control module receives the first dimming data, generates second dimming data based on the first dimming data, and sends the second dimming data to a backlight panel. By integrating the display control function and the dimming control function in one display chip, the internal circuit complexity of the display system can be simplified, the internal wiring of the system can be simplified, and the interface occupancy rate can be reduced. In addition, by integrating the image data and the dimming data in one display chip for processing, the response speed and the processing efficiency of the chip can be effectively improved, the integration advantage can be formed, and the product image quality can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of image display, in particular to a display chip, a display control method of the display chip and a display device. BACKGROUND

[0002] Mini LED backlight technology is an advanced display technology, which uses a large number of micro-LEDs as backlight sources to achieve finer partitioned dimming and high dynamic range, and improve the deficiencies of traditional LCD in contrast, color saturation, etc., thereby providing better picture and color accuracy.

[0003] At present, in the display device with Mini LED as the backlight source, a dimmer controller is usually used to drive the backlight panel to provide corresponding backlight for the display panel, and a timing controller (TCON) is used to drive the display panel to display images. However, the existing display control method will occupy more interfaces inside the display device, and the internal wiring of the device is complex, which will lead to high product cost of the display device. SUMMARY

[0004] The present application provides a display chip, a display control method of the display chip and a display device, to solve the problem of high product cost caused by the existing display device for realizing display control.

[0005] In a first aspect, an embodiment of the present application provides a display chip, comprising a display control module and a dimmer control module, wherein:

[0006] The display control module is configured to receive display-related data corresponding to a frame of image, determine first image data and first dimmer data based on the display-related data, and send the first image data to a display panel and the first dimmer data to the dimmer control module.

[0007] The dimmer control module is configured to receive the first dimmer data, generate second dimmer data based on the first dimmer data, and send the second dimmer data to a backlight panel.

[0008] The display chip provided by the embodiment of the present application integrates the display control module and the dimming control module in one display chip, wherein the display control module determines the first image data and the first dimming data based on the received display related data, and sends the first image data to the display panel and the first dimming data to the dimming control module; the dimming control module generates the second dimming data based on the received first dimming data, and sends the second dimming data to the backlight panel. By integrating the display control function and the dimming control function in one display chip, the circuit complexity inside the display system based on the display chip can be simplified, compared with the prior art mode of controlling the display panel by the TCON and controlling the backlight panel by the dimming controller, the internal wiring of the display system can be effectively simplified, the interface occupancy rate is reduced, in addition, by integrating the image data and the dimming data in one display chip for processing, the response speed and the processing efficiency of the chip can be effectively improved, the integration advantage is formed, the product picture quality is improved, and the market competitiveness of the product is improved.

[0009] In an optional embodiment, the display related data includes second image data and the first dimming data; and the display control module is specifically configured to:

[0010] analyze the display related data to obtain the second image data and the first dimming data, wherein the first dimming data is dimming data corresponding to the second image data;

[0011] perform data conversion processing on the second image data to obtain the first image data.

[0012] In the above embodiment, the display related data received by the display control module can include second image data and first dimming data, that is, the communication protocol between the display chip and the front chip supports transmission of display related data composed of second image data and first dimming data, so that, compared with the prior art mode of leading out a separate SPI (English: Serial Peripheral Interface, Chinese: serial peripheral interface) in the front chip to transmit dimming data, the mode in the embodiment of the present application can reduce the interface occupancy rate of the front chip, reduce the wiring between the front chip and the display chip, and thus simplify the system wiring.

[0013] In an optional embodiment, in the display related data, the second image data includes a plurality of image sub-data, the plurality of image sub-data are arranged in a first preset order, and the first dimming data is located after the image sub-data at the last position;

[0014] One image sub-data is pixel data corresponding to one pixel row in the one frame of image, and the first preset order is determined according to positions of pixel rows corresponding to the image sub-data on the one frame of image.

[0015] In the above embodiment, the communication protocol between the display chip and the front chip is modified, that is, the first dimming data is added after the second image data in the display related data, so that the communication protocol between the display chip and the front chip can support transmission of the display related data. Compared with the existing mode in which a separate channel is required between the front chip and the TCON to transmit image data and a separate channel is required between the front chip and the dimming controller to transmit dimming data, the modification of the communication protocol can effectively simplify the complexity of the circuit and the wire, and reduce the product cost.

[0016] In an optional embodiment, in the display related data, the second image data includes a plurality of image sub-data, and the plurality of image sub-data are arranged according to a second preset order; the first dimming data includes dimming sub-data corresponding to the image sub-data one by one, the dimming sub-data is located after the image sub-data corresponding to the dimming sub-data and before the next image sub-data of the image sub-data corresponding to the dimming sub-data.

[0017] One image sub-data is pixel data corresponding to one pixel row in the one frame of image, and one dimming sub-data is determined according to the image sub-data corresponding to the dimming sub-data, and the second preset order is determined according to positions of pixel rows corresponding to the image sub-data on the one frame of image.

[0018] In the above embodiment, the communication protocol between the display chip and the front chip is modified, that is, the dimming sub-data corresponding to each image sub-data is added after the image sub-data in the display related data, so that the communication protocol between the display chip and the front chip can support transmission of the display related data including image data and dimming data. In this way, the time interval between the transmission of the image data and the dimming data corresponding to the image data can be small, the backlight is brightened synchronously with the liquid crystal display, and the display effect of the display product is improved.

[0019] In an optional embodiment, the display related data is generated based on a point-to-point protocol, or the display related data is generated based on a high-speed serial video transmission protocol.

[0020] In an optional embodiment, the display related data is generated based on an embedded display port protocol.

[0021] In the above embodiments, when the display-related data received by the display control module of the display chip includes the second image data and the first backlight data, the display chip and its front-end chip can communicate using a point-to-point protocol, a high-speed serial video transmission protocol, or an embedded display port protocol, thereby improving the flexibility of the settings.

[0022] In one optional embodiment, the display-related data includes second image data; the display control module is specifically used for:

[0023] The display-related data is parsed to obtain the second image data;

[0024] Based on the second image data, the first dimming data is determined, and the second image data is subjected to data conversion processing to obtain the first image data.

[0025] In the above embodiments, when the display-related data received by the display chip includes second image data, the display control module can process the second image data to obtain first dimming data, and then send the first dimming data to the dimming control module for processing. Since the display control function and dimming control function are integrated into one chip, there is no need to separately manufacture a TCON board and a dimming controller board in the display product. Only a board carrying the display chip provided in this embodiment of the invention needs to be manufactured, thereby saving board manufacturing costs, reducing product costs, and improving the product's market competitiveness.

[0026] In one alternative embodiment, the display-related data is generated based on a point-to-point protocol, or the display-related data is generated based on a high-speed serial video transmission protocol, or the display-related data is generated based on an embedded display port protocol.

[0027] Secondly, embodiments of the present invention provide a display control method for a display chip, comprising:

[0028] Receive display-related data corresponding to a frame of image;

[0029] Based on the display-related data, first image data and first dimming data are determined, and the first image data is sent to the display panel;

[0030] Based on the first dimming data, second dimming data is generated and sent to the backlight panel.

[0031] In an optional embodiment, if the display-related data includes the second image data and the first dimming data, then determining the first image data and the first dimming data based on the display-related data includes:

[0032] parsing the display-related data to obtain the second image data and the first dimming data, wherein the first dimming data is dimming data corresponding to the second image data;

[0033] performing data conversion processing on the second image data to obtain the first image data.

[0034] In an optional embodiment, in the display-related data, the second image data includes a plurality of image sub-data, the plurality of image sub-data are arranged according to a first preset order, and the first dimming data is located after the image sub-data at the end.

[0035] One image sub-data is pixel data corresponding to one pixel row in the one frame of image, and the first preset order is determined according to positions of pixel rows corresponding to the image sub-data on the one frame of image.

[0036] In an optional embodiment, in the display-related data, the second image data includes a plurality of image sub-data, the plurality of image sub-data are arranged according to a second preset order; the first dimming data includes dimming sub-data corresponding to the image sub-data one by one, the dimming sub-data is located after the image sub-data corresponding to the dimming sub-data and before the next image sub-data of the image sub-data corresponding to the dimming sub-data.

[0037] One image sub-data is pixel data corresponding to one pixel row in the one frame of image, and one dimming sub-data is determined according to the image sub-data corresponding to the dimming sub-data, and the second preset order is determined according to positions of pixel rows corresponding to the image sub-data on the one frame of image.

[0038] In an optional embodiment, the display-related data is generated based on a point-to-point protocol, or the display-related data is generated based on a high-speed serial video transmission protocol.

[0039] In an optional embodiment, the display-related data is generated based on an embedded display port protocol.

[0040] In an optional embodiment, if the display-related data includes second image data, the determining, based on the display-related data, of first image data and first dimming data includes:

[0041] parsing the display-related data to obtain the second image data;

[0042] determining the first dimming data according to the second image data, and performing data conversion processing on the second image data to obtain the first image data.

[0043] In an optional embodiment, the display-related data is generated based on a point-to-point protocol, or the display-related data is generated based on a high-speed serial video transmission protocol, or the display-related data is generated based on an embedded display port protocol.

[0044] In a third aspect, an embodiment of the present application provides a display device, comprising a processor, a backlight panel, a display panel, and a display chip as described in any one of the embodiments of the first aspect, wherein the display chip is connected to the processor, the backlight panel, and the display panel respectively.

[0045] The processor is configured to output display-related data corresponding to a frame of image to the display chip.

[0046] The backlight panel is configured to receive second dimming data sent by the display chip, and provide backlight for the display panel according to the second dimming data.

[0047] The display panel is configured to receive first image data sent by the display chip, and perform image display according to the first image data.

[0048] In an optional embodiment, the processor and the display chip communicate with each other through a point-to-point protocol, or the processor and the display chip communicate with each other through a high-speed serial video transmission protocol, or the processor and the display chip communicate with each other through an embedded display port protocol.

[0049] The display-related data comprises second image data and first dimming data, or the display-related data comprises second image data.

[0050] In an optional embodiment, the display chip and the backlight panel communicate with each other through a serial peripheral interface protocol, and the display chip and the display panel communicate with each other through a point-to-point protocol.

[0051] The first image data comprises pixel data and timing control data, and the second dimming data comprises current setting data and PWM (Pulse Width Modulation) setting data.

[0052] In a fourth aspect, an embodiment of the present application provides a display device, comprising a display panel, a backlight panel, and a control board, wherein the control board carries a display chip as described in any one of the embodiments of the first aspect.

[0053] The control board is connected with the display panel and the backlight panel respectively, and the display panel is arranged opposite to the backlight panel.

[0054] The display control method of the display chip disclosed in the second aspect, the display device disclosed in the third aspect and the display device disclosed in the fourth aspect can achieve the technical effects as described above for the first aspect or the various possible schemes in the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0056] Figure 1 An overall architecture schematic diagram of a display device provided by the related art is shown.

[0057] Figure 2 Another overall architecture schematic diagram of a display device provided by the related art is shown.

[0058] Figure 3 A module structure schematic diagram of a display chip provided by the embodiments of the present application is shown.

[0059] Figure 4 A structure schematic diagram of a display device provided by the embodiments of the present application and provided with a display chip is shown.

[0060] Figure 5 A format schematic diagram of a P2P protocol data packet provided by the related art is shown.

[0061] Figure 6A A format schematic diagram of a P2P protocol data packet provided by the embodiments of the present application is shown.

[0062] Figure 6B Another format schematic diagram of a P2P protocol data packet provided by the embodiments of the present application is shown.

[0063] Figure 7 Another structure schematic diagram of a display device provided by the embodiments of the present application and provided with a display chip is shown.

[0064] Figure 8 A format schematic diagram of a VbyOne protocol data packet provided by the related art is shown.

[0065] Figure 9A A format schematic diagram of a VbyOne protocol data packet provided by the embodiments of the present application is shown.

[0066] Figure 9B Another format diagram of a VbyOne protocol data packet provided for an embodiment of the present application is shown in FIG. 6;

[0067] Figure 10 Another structure diagram of a display device provided with a display chip for an embodiment of the present application is shown in FIG. 7;

[0068] Figure 11 A work flow diagram of a display control method of a display chip for an embodiment of the present application is shown in FIG. 8;

[0069] Figure 12 Another structure diagram of a display device provided with a display chip for an embodiment of the present application is shown in FIG. 9. DETAILED DESCRIPTION

[0070] In order to make the objects, technical solutions and advantages of the present application clearer, the following will further describe the present application in detail with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0071] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in other than the order illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0072] Mini LED backlight technology is an advanced display technology that uses a large number of micro-LEDs as backlight sources to achieve finer zoning dimming and high dynamic range, providing better picture quality and color accuracy. Display devices based on Mini LED backlight technology combine the advantages of LCD and OLED-based display devices, and have a more superior cost performance, so they have become the mainstream product in the television market and are widely favored by consumers.

[0073] Figure 1 The overall architecture of the existing display device based on Mini LED backlight technology is shown in FIG. 1. As shown in FIG. 1, the display device based on Mini LED backlight technology includes a display panel 101, a backlight module 102, a display driver IC (IC: Integrated Circuit) 103, a system on chip (SoC: System on Chip) 104, a power management integrated circuit (PMIC: Power Management Integrated Circuit) 105, a memory 106, a communication interface 107, a sensor 108, a camera 109, a microphone 110, a speaker 111, a button 112, a touch screen 113, and a battery 114. Figure 1As shown, an existing display device 100 based on Mini LED backlight technology typically includes a System-on-Chip (SoC) 110, a TCON 120, a dimming controller 130, a backlight panel 140, and a display panel 150. The SoC 110 is connected to both the TCON 120 and the dimming controller 130. The TCON 120 is connected to the display panel 150, and the dimming controller 130 is connected to the backlight panel 140.

[0074] like Figure 1 As shown, SoC 110 and TCON 120 can communicate based on the VbyOne (Video by One) protocol or the eDP (Embedded Display Port) protocol, while TCON 120 and display panel 150 can communicate based on the P2P (Point to Point) protocol. Specifically, SoC 110 sends initial image data to TCON 120 based on the VbyOne or eDP protocol; after receiving the initial image data, TCON 120 processes the data to generate target image data and timing control data, such as generating GOATMing (Gate On Array Timing) data, and sends the generated target image data and timing control data to display panel 150 based on the P2P protocol; display panel 150 then displays the image normally based on the target image data and timing control data.

[0075] For example Figure 1 As shown, the SoC 110 and the dimming controller 130 can communicate via the SPI protocol, and the dimming controller 130 and the backlight panel 140 can communicate via either the single-wire transmission protocol or the SPI protocol. Specifically, the SoC 110 sends initial dimming data to the dimming controller 130 via the SPI protocol, for example, sending local dimming data. After receiving the initial dimming data, the dimming controller 130 processes it to generate target dimming data, which includes current setting data and PWM setting data, and sends it to the backlight panel 140 via the single-wire transmission protocol or the SPI protocol. The backlight panel 140 is equipped with multiple dimmers and backlights connected to each dimmer. After receiving the target dimming data, the dimmers on the backlight panel 140 control the brightness of the backlights connected to them based on the target dimming data to provide backlight for the display panel 150.

[0076] In actual display device products, a TCON board for carrying the TCON 120 is usually made for the TCON 120, and a dimming controller board for carrying the dimming controller 130 is made for the dimming controller 130. As shown in Figure 2 Fig. 1 is a schematic diagram of another architecture of a display device, Figure 2 Fig. 1(a) is a schematic diagram of a display side in the display device 100, in which the TCON 120 is fixed on the TCON board 121 and connected with scan lines and data lines (not shown in the figure) in the display panel 150, the timing control data is transmitted through the scan lines to perform timing control, and the target image data is transmitted through the data lines to the corresponding pixel units to realize image display.

[0077] Figure 2 Fig. 1(b) is a schematic diagram of a backlight side in the display device 100, in which the dimming controller 130 is fixed on the dimming controller board 131; the backlight panel 140 is provided with dimmers 141 in an array, each of the dimmers 141 is connected with one or more backlight sources 142, the backlight sources 142 can adopt Mini LED; the dimmers 141 in the same column are connected in series through data lines 143. In this way, the dimming controller 130 can transmit target dimming data to the corresponding dimmer 141 through the data line 143, so that the dimmer 141 controls the brightness of the backlight source 142 connected with itself according to the current setting data and the PWM setting data in the received target dimming data.

[0078] Therefore, in the above display device, a TCON board and a dimming controller board need to be made respectively to control the display panel and the backlight panel respectively, and this separate control mode occupies more internal interfaces, causes the internal wiring of the device to be complex, and the product cost of the display device is high.

[0079] Based on this, the display chip, the display control method of the display chip and the display device provided by the embodiments of the present application integrate the existing TCON and dimming controller together to simplify the internal wiring of the display system, reduce the interface occupation rate, and reduce the product cost.

[0080] The purposes, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and do not limit the present application, and the embodiments and the features in the embodiments can be combined with each other without conflict.

[0081] The display chip provided by the embodiments of the present application will be specifically introduced below with reference to the accompanying drawings:

[0082] Figure 3A module structure diagram of a display chip is shown in the embodiment of the present application, as shown in Figure 3 The display chip 200 includes a display control module 210 and a dimming control module 220, and the display control module 210 and the dimming control module 220 are connected, wherein:

[0083] The display control module 210 can be configured to receive display-related data corresponding to a frame of image, determine first image data and first dimming data based on the display-related data, and send the first image data to the display panel and send the first dimming data to the dimming control module 220.

[0084] The dimming control module 220 can be configured to receive the first dimming data, generate second dimming data based on the first dimming data, and send the second dimming data to the backlight panel.

[0085] In a specific implementation, the dimming controller chip can be integrated in the TCON chip to form the display chip in the embodiment of the present application. In addition, the TCON chip can be a conventional version TCON chip or a simplified version TCON chip, and the embodiment of the present application does not make any limitation on this. When the display chip integrates the dimming controller chip in the simplified version TCON chip, the display chip only supports the basic functions of the TCON chip, and the functions such as image quality processing are completed by the front chip of the display chip, such as SoC, so that the product cost can be further saved and the design of the screen circuit is simplified.

[0086] In the display chip provided by the embodiment of the present application, the display control function and the dimming control function are integrated in one display chip, which can simplify the circuit complexity inside the display system based on the display chip. Compared with the prior art, the display panel is controlled by the TCON and the backlight panel is controlled by the dimming controller, which can effectively simplify the internal wiring of the display system and reduce the interface occupancy. In addition, by integrating the image data and the dimming data in one display chip for processing, the response speed and processing efficiency of the chip can be effectively improved, the integration advantage is formed, the product image quality is improved, and the market competitiveness of the product is improved.

[0087] Figure 4 A structure diagram of a display device provided with a display chip is shown in the embodiment of the present application, as shown in Figure 4 The display device 300 includes a processor 310, a backlight panel 320, a display panel 330 and a display chip 200, and the display chip 200 is connected with the processor 310, the backlight panel 320 and the display panel 330. In the embodiment of the present application, the display chip 200 can further include three interfaces, i.e., a first interface, a second interface and a third interface, wherein:

[0088] The first interface of the display chip 200 is connected with the input interface of the display panel 330, and in the structure, the output interface of the processor 310 supports a point-to-point protocol, so that the two can communicate through the point-to-point protocol, that is, the display chip 200 can send the first image data to the display panel 330 based on the point-to-point protocol, and the first image data includes pixel data and timing control data. In the embodiment of the application, the pixel data can be OC (English: Open Cell, Chinese: liquid crystal panel) data, and the timing control data can be GOA Timing data.

[0089] It should be noted that the point-to-point protocol in the embodiment of the application can adopt a P2P protocol, a CSPI (English: China Standard Point-to-Point Interface, Chinese: high-speed point-to-point transmission) protocol, a USI-T (English: Unified Standard Interface for TV, Chinese: television unified standard interface) protocol, or other suitable point-to-point protocols, and the embodiment of the application does not make any limitation in this regard.

[0090] In a specific implementation, in the display panel 330, a plurality of scan lines are arranged in the row direction and connected with a gate drive IC (English: Integrated Circuit, Chinese: integrated circuit); a plurality of data lines are arranged in the column direction and connected with a source drive IC; and a plurality of pixel units are arranged in an array on the display panel 330, and each pixel unit is connected with a scan line and a data line. The display chip 200 sends the pixel data to the source drive IC of the display panel 330 and sends the timing control data to the gate drive IC of the display panel 330; the source drive IC transmits the pixel data to the corresponding pixel unit through the data line, and the gate drive IC transmits the timing control data to the corresponding pixel unit row through the scan line, so as to realize normal display of an image.

[0091] Further, the second interface of the display chip 200 is connected with the input interface of the backlight panel 320, so that the two can communicate through a serial peripheral interface protocol, such as an SPI protocol, that is, the display chip 200 can send the second dimming data to the backlight panel 320 based on the serial peripheral interface protocol, and the second dimming data includes current setting data and PWM setting data; after the dimmer in the backlight panel 320 receives the second dimming data, the working current of the backlight source connected with it is determined according to the current setting data, and a PWM control signal is generated based on the PWM setting data, so as to control the luminous brightness of the backlight source connected with the dimmer.

[0092] Of course, the display chip 200 and the backlight panel 320 can also be connected through a self-developed single-wire transmission interface, and the embodiments of the present application do not make any limitation in this regard.

[0093] In some embodiments, the third interface of the display chip 200 is connected with the output interface of the processor 310, so that the two can communicate through a point-to-point protocol, wherein the processor 310 can adopt a SoC, and the point-to-point protocol can adopt a P2P protocol, a PPP protocol, etc. At this time, there are two processing modes as follows:

[0094] Mode one:

[0095] The processor 310 generates display-related data based on the point-to-point protocol, and sends the display-related data to the display chip 200, wherein the display-related data includes second image data. After the display control module 210 in the display chip 200 receives the display-related data, it parses the display-related data to obtain the second image data; and according to the second image data, determines first dimming data, and performs data conversion processing on the second image data to obtain first image data; then, sends the first dimming data to the dimming control module 220, and sends the first image data to the display panel 330 in the rear stage.

[0096] The dimming control module 220 generates second dimming data based on the received first dimming data, and sends the second dimming data to the backlight panel 320 in the rear stage. In this way, the backlight panel 320 can provide backlight for the display panel 330 according to the second dimming data; and the display panel 330 can display images according to the first image data.

[0097] Therefore, when the display-related data received by the display chip includes the second image data, the display control module therein can process the second image data to obtain the first dimming data, and then send the first dimming data to the dimming control module for processing. Since the display control function and the dimming control function are integrated into one chip, in the display product, it is not necessary to separately manufacture a TCON board and a dimming controller board, but only a board carrying the display chip provided by the embodiments of the present application is needed, so that the manufacturing cost of the board can be saved, the product cost can be reduced, and the market competitiveness of the product can be improved.

[0098] Mode two:

[0099] The processor 310 generates display-related data based on the point-to-point protocol, and sends the display-related data to the display chip 200, the display-related data including second image data and first dimming data; the display control module 210 in the display chip 200 receives the display-related data, and parses the display-related data to obtain the second image data and the first dimming data, wherein the first dimming data is dimming data corresponding to the second image data; then, the second image data is subjected to data conversion processing to obtain first image data; then, the first dimming data is sent to the dimming control module 220, and the first image data is sent to the display panel 330 in the rear stage.

[0100] The dimming control module 220 generates second dimming data based on the received first dimming data, and sends the second dimming data to the backlight panel 320 in the rear stage. In this way, the backlight panel 320 can provide backlight for the display panel 330 according to the second dimming data; and the display panel 330 can display images according to the first image data.

[0101] However, the current point-to-point protocol only supports transmission of image data, and does not support simultaneous transmission of image data and dimming data. For ease of illustration, the following embodiments take the P2P protocol as an example: Figure 5 An existing P2P protocol data packet format diagram is shown in FIG. 1, which shows that the P2P protocol data packet generally includes a plurality of data areas (data area 1 to data area M), a setting data area, and a vertical blanking (English: Vertical Blanking) area, wherein: Figure 5

[0102] As shown in FIG. 2, each data area includes a horizontal blanking (English: Horizontal Blanking) area (i.e. HBK), BAC (English: Bit Alignment Code, Chinese: Bit Alignment Code) data, POL identification, RGB data, and EOL (English: End of Line, Chinese: End of Line) identification. The setting data area includes HBK, BAC data, setting data, Gamma mapping data, and EOL identification. The vertical blanking area includes HBK, BAC data, BKPOL identification, and VBK. Figure 5

[0103] ​​The BAC data is used to represent the identification code of mutual matching of the two parties in communication (the display chip 200 and the source driving IC in the display panel 330 in the embodiment of the application). The POL identifier is used to represent the polarity of the scanning line corresponding to the data area. For example, the POL identifier in the data area 1 is “+”, which indicates that the polarity of the scanning line connected to the first pixel row in the display panel 330 is “+”. The POL identifier in the data area 2 is “-”, which indicates that the polarity of the scanning line connected to the second pixel row in the display panel 330 is “-”, and so on. The RGB data is the pixel data (i.e., the image sub-data in the subsequent embodiment) corresponding to one pixel row. For example, the RGB data in the data area 1 is the pixel data corresponding to each pixel unit in the first pixel row. The RGB data in the data area 2 is the pixel data corresponding to each pixel unit in the second pixel row, and so on.

[0104] By Figure 5 It can be known that the existing P2P protocol does not support the transmission of dimming data and only supports the transmission of image data. Therefore, the dimming data is innovatively integrated into the data standard of the P2P protocol in the embodiment of the application. In this way, compared with the mode in the prior art in which a separate SPI needs to be introduced in the processor to transmit the dimming data, the mode in the embodiment of the application can reduce the interface occupancy rate of the processor and reduce the wiring between the processor and the display chip, thereby simplifying the system wiring. The specific implementation mode is as follows:

[0105] In some embodiments, in the display-related data, the second image data includes a plurality of image sub-data, the plurality of image sub-data is arranged according to a first preset order, and the first dimming data is located after the image sub-data at the last position; wherein one image sub-data is pixel data corresponding to one pixel row in one frame of image, and the first preset order is determined according to the position of the pixel row corresponding to the image sub-data in one frame of image.

[0106] In the specific implementation, the display-related data can exist in the form of a data packet, and the first preset order can be the row order of each pixel row corresponding to the image sub-data, for example, the first preset order can adopt the order from the first pixel row to the last pixel row. In the improved P2P protocol data packet, first, the image sub-data corresponding to each pixel row is transmitted in turn according to the row order, then, after the transmission of the image sub-data corresponding to the last pixel row, the first dimming data is transmitted in the vertical blanking area to complete the transmission of the display-related data corresponding to one frame of image.

[0107] Figure 6A A format diagram of a P2P protocol data packet provided by the embodiment of the application is shown in FIG. 1. Figure 6AAs shown, the P2P protocol data includes a plurality of data regions (data region 1 to data region M), a setting data region, and a vertical blanking region; each data region includes an HBK, BAC data, a POL identifier, image sub-data, and an EOL identifier. The setting data region includes an HBK, BAC data, setting data, Gamma mapping data, and an EOL identifier. The vertical blanking region includes an HBK, BAC data, a BKPOL identifier, and first dimming data, i.e., the first dimming data is transmitted in the VBK corresponding data bit of the vertical blanking region, and is transmitted once per frame.

[0108] Of course, Figure 6A The vertical blanking region shown includes two rows of VBK, i.e., the first dimming data is sequentially added to the data bit corresponding to the two rows of VBK. If the amount of data of the first dimming data is large, the number of rows of VBK in the vertical blanking region can be flexibly adjusted, and embodiments of the present application do not limit this.

[0109] Therefore, by modifying the communication protocol between the display chip and the processor, i.e., adding the first dimming data after the second image data in the display-related data, the communication protocol between the display chip and the processor can support the transmission of the display-related data. Compared with the existing manner in which a separate channel is required between the processor and the TCON to transmit image data, and a separate channel is required between the processor and the dimming controller to transmit dimming data, the modification of the communication protocol can effectively simplify the complexity of the circuit and the wiring, and reduce the product cost.

[0110] In some embodiments, in the display-related data, the second image data includes a plurality of image sub-data, and the plurality of image sub-data is arranged according to a second preset order; the first dimming data includes dimming sub-data corresponding to the image sub-data one by one, the dimming sub-data is located after the image sub-data corresponding to the dimming sub-data and before the next image sub-data of the image sub-data corresponding to the dimming sub-data; wherein one image sub-data is pixel data corresponding to one pixel row in one frame of image, one dimming sub-data is determined according to the image sub-data corresponding to the dimming sub-data, and the second preset order is determined according to the position of the pixel row corresponding to the image sub-data in one frame of image.

[0111] In practical implementation, the display-related data can exist in the form of data packets. The second preset order can be the row order of each pixel row corresponding to the image sub-data. For example, the second preset order can be from the first pixel row to the last pixel row. In the improved P2P protocol data packet, during the process of transmitting the image sub-data corresponding to each pixel row in row order, after transmitting the image sub-data corresponding to each pixel row, the dimming sub-data corresponding to that image sub-data is transmitted immediately, followed by the EOL flag, to complete the transmission of the image sub-data corresponding to one pixel row and the dimming sub-data corresponding to the backlight row corresponding to that pixel row, until the display-related data corresponding to one frame of image is transmitted.

[0112] It should be noted that in the embodiments of the present invention, the first preset order and the second preset order may be the same or different, and can be flexibly set according to actual business needs. The embodiments of the present invention do not impose any restrictions on this.

[0113] Figure 6B This diagram illustrates another P2P protocol data packet format provided by an embodiment of the present invention, as shown below. Figure 6B As shown, the P2P protocol data includes multiple data areas (data area 1 to data area M), a setting data area, and a vertical blanking area. Each data area includes HBK, BAC data, POL identifier, image sub-data, dimming sub-data, and EOL identifier, meaning the dimming sub-data is transmitted after the image sub-data. The setting data area includes HBK, BAC data, setting data, Gamma mapping data, and EOL identifier. The vertical blanking area includes HBK, BAC data, BKPOL identifier, and VBK.

[0114] For example, data area 1 includes image sub-data corresponding to the first pixel row and dimming sub-data corresponding to the first backlight row, wherein the first backlight row consists of one or more rows of backlights corresponding to the first pixel row. Data area 2 includes image sub-data corresponding to the second pixel row and dimming sub-data corresponding to the second backlight row, wherein the second backlight row consists of one or more rows of backlights corresponding to the second pixel row. And so on.

[0115] Therefore, by modifying the communication protocol between the display chip and the processor, specifically by adding corresponding dimming sub-data after each image sub-data in the display-related data, the communication protocol between the display chip and its front-end chip can support the transmission of display-related data including image data and dimming data. This reduces the time interval between transmitting image data and its corresponding dimming data, allowing backlighting to be synchronized with the LCD display, thus adapting to low-latency application scenarios and improving the display effect of display products.

[0116] Figure 7This diagram illustrates another structural schematic of a display device equipped with a display chip, as provided in an embodiment of the present invention. Figure 7 As shown, the third interface of the display chip 200 is connected to the output interface of the processor 310. In this structure, the output interface of the processor 310 supports a high-speed serial video transmission protocol, allowing communication between the two. The high-speed serial video transmission protocol can be the VbyOne protocol. At this point, there are two processing methods:

[0117] Method 1:

[0118] The processor 310 generates display-related data based on a high-speed serial video transmission protocol and sends the display-related data to the display chip 200. This display-related data includes second image data. Since the display chip 200 processes the display-related data in a similar manner to the first method based on a point-to-point protocol, its specific implementation can be referred to the implementation method in the first method based on a point-to-point protocol, and will not be repeated here.

[0119] Method 2:

[0120] The processor 310 generates display-related data based on a high-speed serial video transmission protocol and sends the display-related data to the display chip 200. The display-related data includes second image data and first dimming data. Since the display chip 200 processes the display-related data in a manner similar to the second method based on the point-to-point protocol, its specific implementation can be referred to the implementation method in the second method based on the point-to-point protocol, and will not be repeated here.

[0121] However, current high-speed serial video transmission protocols only support the transmission of image data and do not support the simultaneous transmission of image data and dimming data. The following example uses the VbyOne protocol for high-speed serial video transmission to illustrate this:

[0122] Figure 8 A schematic diagram of the existing VbyOne protocol packet format is shown. Figure 8 As shown, for the image data corresponding to a frame of an image, the image data is transmitted in rows. That is, the image data corresponding to the first pixel row is transmitted first, and then the row blanking area (i.e., the horizontal blanking area) is entered. Then the image data corresponding to the second pixel row is transmitted, and the row blanking area is entered again, and so on, until the image data corresponding to the last pixel row is transmitted, and then the vertical blanking area is entered.

[0123] In this embodiment of the invention, to enable the VbyOne protocol to support the simultaneous transmission of second image data and first dimming data, the VbyOne protocol has been modified and upgraded, and the specific implementation method is as follows:

[0124] Figure 9A The following diagram illustrates the structure of a VbyOne protocol data packet provided by an embodiment of the present invention, as shown below. Figure 9A As shown, for the image data corresponding to a frame of an image, the image data is transmitted in rows. That is, the image sub-data corresponding to the first pixel row is transmitted first, and then the row blanking area is entered. Then the image sub-data corresponding to the second pixel row is transmitted, and then the row blanking area is entered again, and so on, until the image sub-data corresponding to the last pixel row is transmitted. Then the vertical blanking area is entered, and the first dimming data is transmitted in the vertical blanking area.

[0125] Figure 9B This invention illustrates another structure of a VbyOne protocol data packet provided in an embodiment of the invention, as follows: Figure 9B As shown, for the image data corresponding to a frame of an image, the image data is transmitted in rows. That is, firstly, the image sub-data corresponding to the first pixel row is transmitted, and then the row blanking area is entered. In the row blanking area, the dimming sub-data corresponding to the first backlight row is transmitted. The first backlight row is composed of one or more rows of backlights corresponding to the first pixel row. Next, the image sub-data corresponding to the second pixel row is transmitted, and then the row blanking area is entered again. In the row blanking area, the dimming sub-data corresponding to the second backlight row is transmitted, and so on, until the dimming sub-data corresponding to the last backlight row is transmitted, and then the vertical blanking area is entered.

[0126] Figure 10 This diagram illustrates another structural schematic of a display device equipped with a display chip, as provided in an embodiment of the present invention. Figure 10 As shown, the third interface of the display chip 200 is connected to the output interface of the processor 310. In this structure, the output interface of the processor 310 supports the embedded display port protocol, so the two can communicate with each other through the embedded display port protocol, which can be the eDP protocol.

[0127] Furthermore, since the embedded display port protocol itself supports backlight control via the AUX channel, therefore, in situations such as Figure 10 In the structure shown, the processor 310 can send display-related data containing only the second image data to the display chip 200 based on the embedded display port protocol, or it can send display-related data containing the second image data and the first dimming data to the display chip 200 so that the display chip 200 can perform corresponding processing.

[0128] Therefore, whether the display-related data transmitted to the display chip includes the second image data and the first backlight data or only the second image data, the display chip can communicate with the processor by using a point-to-point protocol, a high-speed serial video transmission protocol or an embedded display port protocol, which improves the flexibility of the setting.

[0129] In some embodiments, a communication line such as an SPI communication line can also be separately led out on the processor 310 and connected with the display chip 200, and the first dimming data is transmitted to the display chip 200 through the communication line.

[0130] Based on the same concept, the embodiment of the present application also provides a display control method of a display chip. Since the principle of solving problems of the method is similar to that of the display chip, the implementation of the method can be referred to the implementation of the display chip, and the repeated parts will not be described herein.

[0131] As shown in FIG. 11, Figure 11 the method can specifically include the following steps:

[0132] Step S1101, receiving display-related data corresponding to a frame of image;

[0133] Step S1102, determining first image data and first dimming data based on the display-related data, and sending the first image data to a display panel;

[0134] Step S1103, generating second dimming data based on the first dimming data, and sending the second dimming data to a backlight panel.

[0135] In some embodiments, if the display-related data includes the second image data and the first dimming data, the determination of the first image data and the first dimming data based on the display-related data includes:

[0136] analyzing the display-related data to obtain the second image data and the first dimming data, wherein the first dimming data is dimming data corresponding to the second image data;

[0137] performing data conversion processing on the second image data to obtain the first image data.

[0138] In some embodiments, in the display-related data, the second image data includes a plurality of image sub-data, the plurality of image sub-data are arranged according to a first preset order, and the first dimming data is located after the image sub-data at the last position;

[0139] wherein one image sub-data is pixel data corresponding to one pixel row in a frame of image, and the first preset order is determined according to the position of the pixel row corresponding to the image sub-data in the frame of image.

[0140] In some embodiments, in the display-related data, the second image data comprises a plurality of image sub-data, and the plurality of image sub-data are arranged according to a second preset order; the first dimming data comprises dimming sub-data corresponding to the image sub-data one by one, and the dimming sub-data is located after the image sub-data corresponding to the dimming sub-data and before the next image sub-data of the image sub-data corresponding to the dimming sub-data;

[0141] In some embodiments, one image sub-data is pixel data corresponding to one pixel row in one frame of image, one dimming sub-data is determined according to the image sub-data corresponding to the dimming sub-data, and the second preset order is determined according to the position of the pixel row corresponding to the image sub-data in one frame of image.

[0142] In some embodiments, the display-related data is generated based on a point-to-point protocol, or the display-related data is generated based on a high-speed serial video transmission protocol.

[0143] In some embodiments, the display-related data is generated based on an embedded display port protocol.

[0144] In some embodiments, if the display-related data comprises the second image data, the first image data and the first dimming data are determined based on the display-related data, comprising:

[0145] The display-related data is parsed to obtain the second image data;

[0146] The first dimming data is determined according to the second image data, and the first image data is obtained by performing data conversion processing on the second image data.

[0147] In some embodiments, the display-related data is generated based on a point-to-point protocol, or the display-related data is generated based on a high-speed serial video transmission protocol, or the display-related data is generated based on an embedded display port protocol.

[0148] Based on the same concept, the embodiments of the present application also provide a display device, since the principle of the display device solving the problem is similar to the display chip, therefore the implementation of the display device can be referred to the implementation of the display chip, and the repeated parts will not be described here.

[0149] As shown in FIG. 3, Figure 4 The display device 300 comprises a processor 310, a backlight panel 320, a display panel 330 and the display chip 200 provided by any of the above embodiments, and the display chip 200 is connected with the processor 310, the backlight panel 320 and the display panel 330 respectively, wherein:

[0150] The processor 310 is configured to output display-related data corresponding to one frame of image to the display chip;

[0151] The backlight panel 320 is used to receive the second dimming data sent by the display chip 200, and to provide backlight for the display panel 330 according to the second dimming data;

[0152] The display panel 330 is used to receive first image data sent by the display chip 200 and to display an image based on the first image data.

[0153] In some embodiments, the processor 310 and the display chip 200 communicate via a point-to-point protocol, or via a high-speed serial video transmission protocol, or via an embedded display port protocol.

[0154] The display-related data includes the second image data and the first dimming data, or the display-related data includes the second image data.

[0155] In some embodiments, the display chip 200 communicates with the backlight panel 320 via a serial peripheral port protocol, and the display chip 200 communicates with the display panel 330 via a point-to-point protocol.

[0156] The first image data includes pixel data and timing control data, and the second dimming data includes current setting data and PWM setting data.

[0157] Based on the same concept, embodiments of the present invention also provide a display device. The principle by which this display device solves the problem is similar to that of the aforementioned display chip; therefore, the implementation of this display device can refer to the implementation of the aforementioned display chip, and repeated details will not be described again.

[0158] like Figure 12 As shown, the display device 400 includes a display panel 330, a backlight panel 320, and a control board 410. The control board 410 carries the display chip 200 provided in any of the above embodiments. The control board 410 is connected to the display panel 330 and the backlight panel 320 respectively, and the display panel 330 and the backlight panel 320 are arranged opposite to each other.

[0159] In specific implementations, in the embodiments of the present invention, the display device can be a television, personal computer, laptop, or other similar product. Other essential components of the display device are those that should be understood by those skilled in the art, and will not be described in detail here, nor should they be construed as limiting the present invention.

[0160] While the preferred embodiments of the application have been described, additional variations and modifications can be made to these embodiments by those skilled in the art once they have the benefit of the present disclosure without departing from the spirit and scope of the application. Accordingly, it is intended that the appended claims include all such modifications and variations as fall within the scope of the present application.

[0161] It is apparent that those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. It is therefore intended that the present application cover all such changes and modifications that are within its scope.

Claims

1. A display chip, characterized by, It includes a display control module and a dimming control module, wherein: The display control module is used to receive display-related data corresponding to a frame of image, determine first image data and first dimming data based on the display-related data, and send the first image data to the display panel and the first dimming data to the dimming control module. The dimming control module is used to receive the first dimming data, generate second dimming data based on the first dimming data, and send the second dimming data to the backlight panel; Wherein, when the display-related data includes the second image data and the first dimming data, the display control module is specifically used for: The display-related data is parsed to obtain the second image data and the first dimming data, wherein the first dimming data is the dimming data corresponding to the second image data, and the display-related data is generated based on any one of the communication protocols, such as point-to-point protocol and high-speed serial video transmission protocol. The second image data is subjected to data conversion processing to obtain the first image data; Among them, in the display-related data, the second image data includes multiple image sub-data, which are arranged in a second preset order; the first dimming data includes dimming sub-data that corresponds one-to-one with the image sub-data, and the dimming sub-data is located after the image sub-data corresponding to the dimming sub-data and before the next image sub-data of the image sub-data corresponding to the dimming sub-data. Among them, an image sub-data is the pixel data corresponding to a pixel row in the frame image, a dimming sub-data is determined based on the image sub-data corresponding to the dimming sub-data, and the second preset order is determined based on the position of the pixel row corresponding to the image sub-data in the frame image.

2. The display chip of claim 1, wherein, In the display-related data, the second image data includes multiple image sub-data, which are arranged in a first preset order, and the first dimming data is located after the last image sub-data. Wherein, an image sub-data is the pixel data corresponding to a pixel row in a frame of the image, and the first preset order is determined according to the position of the pixel row corresponding to the image sub-data in the frame of the image.

3. A display control method of a display chip, applied to the display chip according to any one of claims 1-2, characterized in that, include: Receive display-related data corresponding to a frame of image; Based on the display-related data, first image data and first dimming data are determined, and the first image data is sent to the display panel; Based on the first dimming data, second dimming data is generated and sent to the backlight panel; Wherein, when the display-related data includes the second image data and the first dimming data, determining the first image data and the first dimming data based on the display-related data includes: The display-related data is parsed to obtain the second image data and the first dimming data, wherein the first dimming data is dimming data corresponding to the second image data, and the display-related data is generated based on any one of point-to-point protocol and high-speed serial video transmission protocol. The second image data is subjected to data conversion processing to obtain the first image data. In the display-related data, the second image data includes a plurality of image sub-data, and the plurality of image sub-data are arranged in a second preset order; the first dimming data includes dimming sub-data corresponding to the image sub-data one by one, and the dimming sub-data is located after the image sub-data corresponding to the dimming sub-data and before the next image sub-data of the image sub-data corresponding to the dimming sub-data. In the display-related data, the second image data includes a plurality of image sub-data, and the plurality of image sub-data are arranged in a first preset order; the first dimming data is located after the image sub-data at the end.

4. The method of claim 3, wherein, In the display-related data, the second image data includes a plurality of image sub-data, and the plurality of image sub-data are arranged in a first preset order; the first dimming data is located after the image sub-data at the end. In the display-related data, the second image data includes a plurality of image sub-data, and the plurality of image sub-data are arranged in a first preset order; the first dimming data is located after the image sub-data at the end.

5. A display device, characterized by The display chip is connected with the processor, the backlight panel and the display panel respectively. The processor is configured to output display-related data corresponding to a frame of image to the display chip. The backlight panel is configured to receive second dimming data sent by the display chip, and provide backlight for the display panel according to the second dimming data. The display panel is configured to receive first image data sent by the display chip, and perform image display according to the first image data.

6. The display device of claim 5, wherein, The processor and the display chip communicate with each other through point-to-point protocol or high-speed serial video transmission protocol. The display-related data includes second image data and first dimming data.

7. The display device according to claim 5 or 6, wherein The display chip and the backlight panel communicate with each other through serial peripheral interface protocol, and the display chip and the display panel communicate with each other through point-to-point protocol. The first image data includes pixel data and timing control data, and the second dimming data includes current setting data and pulse width modulation (PWM) setting data.

8. A display device, characterized by comprising: The display chip is connected with the processor, the backlight panel and the display panel respectively. The control board is connected with the display panel and the backlight panel respectively, and the display panel and the backlight panel are arranged oppositely.

Images