Display chip, display control method of display chip and display equipment

Abstract

The invention discloses a display chip, a display control method of the display chip and display equipment. 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, sends the first image data to the display panel, and sends 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 the backlight panel. A display control function and a dimming control function are integrated in one display chip, the internal circuit complexity of a display system can be simplified, internal wiring of the system can be simplified, the interface occupancy rate can be reduced, in addition, image data and dimming data are integrated in one display chip to be processed, and the image processing efficiency can be improved. The response speed and the processing efficiency of the chip can be effectively improved, an integrated advantage is formed, and the image quality of a product is improved.

Description

Technical Field

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

[0002] Mini LED (English: Mini Light-Emitting Diode; Chinese: sub-millimeter light-emitting diode) backlight technology is an advanced display technology. It uses a large number of micro LEDs as backlight sources to achieve more refined zone dimming and high dynamic range, improving the shortcomings of traditional LCD (English: Liquid Crystal Display, Chinese: Liquid Crystal Display) in contrast, color saturation, etc., thereby providing better quality pictures and color accuracy.

[0003] At present, in display devices using Mini LED as backlight, it is usually necessary to use a dimming controller (English: Dimmer Controller) to drive the backlight panel to provide corresponding backlight for the display panel, and use a timing controller (English: Timing Controller, referred to as TCON) to drive the display panel to display images. However, this existing display control method will cause the internal interface of the display device to occupy more, the internal wiring of the device is complicated, and the product cost of the display device is high. Summary of the invention

[0004] The present invention provides a display chip, a display control method of the display chip and a display device, which are used to solve the problems of a large number of internal occupied interfaces, complex internal wiring of the device and high device cost caused by realizing display control in the existing display device.

[0005] In a first aspect, an embodiment of the present invention provides a display chip, including a display control module and a dimming control module, wherein:

[0006] 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 send the first dimming data to the dimming control module;

[0007] 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.

[0008] In the display chip provided by the embodiment of the present invention, the display control module and the dimming control module are integrated 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 sends 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 method of controlling the display panel through TCON and controlling the backlight panel through the dimming controller in the prior art, the internal wiring of the display system can be effectively 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 processing efficiency of the chip can be effectively improved, forming an integrated advantage, improving the product image quality, and improving the market competitiveness of the product.

[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] 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;

[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 may include the second image data and the first dimming data, that is, the communication protocol between the display chip and the preceding chip supports the transmission of the display-related data consisting of the second image data and the first dimming data. In this way, compared with the method in the prior art that requires a separate SPI (Serial Peripheral Interface) to be introduced into the preceding chip to transmit the dimming data, the method in the embodiment of the present invention can reduce the interface occupancy rate of the preceding chip and reduce the wiring between the preceding chip and the display chip, thereby simplifying 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 last image sub-data;

[0014] Among them, one image sub-data is pixel data corresponding to a pixel row in the 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 on the one frame of image.

[0015] In the above-mentioned embodiment, the communication protocol between the display chip and the preceding chip is modified, that is, in the display-related data, the first dimming data is added after the second image data, so that the communication protocol between the display chip and the preceding chip can support the transmission of the display-related data. Compared with the existing method in which a separate path is required between the preceding chip and TCON to transmit image data, and a separate path is also required between the preceding chip and the dimming controller to transmit dimming data, the modification of the communication protocol can effectively simplify the complexity of the circuit and wiring, and reduce product costs.

[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 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;

[0017] Among them, an image sub-data is pixel data corresponding to a pixel row in the frame of 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 on the frame of image.

[0018] The above-mentioned embodiment is modified by modifying the communication protocol between the display chip and its preceding chip, that is, in the display-related data, the corresponding dimming sub-data are added after each image sub-data, so that the communication protocol between the display chip and its preceding chip can support the transmission of display-related data including image data and dimming data. In this way, the time interval between the transmission of image data and the corresponding dimming data can be shortened, and the backlight lighting is synchronized with the liquid crystal display, thereby improving the display effect of the display product.

[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 DisplayPort protocol.

[0021] In the above embodiment, 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 preceding chip can communicate data using a point-to-point protocol, a high-speed serial video transmission protocol, or an embedded display port protocol, thereby increasing the flexibility of the settings.

[0022] In an optional embodiment, the display-related data includes second image data; and the display control module is specifically configured to:

[0023] parsing the display-related data to obtain the second image data;

[0024] The first dimming data is determined according to the second image data, and data conversion processing is performed on the second image data to obtain the first image data.

[0025] In the above embodiment, 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, there is no need to separately manufacture a TCON board and a dimming controller board, and only one board carrying the display chip provided by the embodiment of the present invention needs to be manufactured, thereby saving the board manufacturing cost, reducing the product cost, and improving the market competitiveness of the product.

[0026] 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.

[0027] In a second aspect, an embodiment of the present invention provides a display control method of a display chip, comprising:

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

[0029] Determine first image data and first dimming data based on the display-related data, and send the first image data to the display panel;

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

[0031] In an optional embodiment, if the display-related data includes 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] Perform 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 in a first preset order, and the first dimming data is located after the last image sub-data;

[0035] Among them, one image sub-data is pixel data corresponding to a pixel row in the 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 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, 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;

[0037] Among them, an image sub-data is pixel data corresponding to a pixel row in the frame of 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 on the 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 DisplayPort protocol.

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

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

[0042] The first dimming data is determined according to the second image data, and data conversion processing is performed 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 invention 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 above, wherein the display chip is connected to the processor, the backlight panel, and the display panel, respectively, wherein:

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

[0046] The backlight panel is used to receive the 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 used to receive the first image data sent by the display chip and display an image 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 includes the second image data and the first dimming data, or the display-related data includes the second image data.

[0050] In an optional embodiment, the display chip communicates with the backlight panel via a serial peripheral interface protocol, and the display chip communicates with the display panel via a point-to-point protocol;

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

[0052] In a fourth aspect, an embodiment of the present invention provides a display device, including 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 above, wherein:

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

[0054] For the technical effects that may be achieved by 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, please refer to the technical effects that can be achieved by the first aspect or various possible schemes in the first aspect, and no further details will be given here. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0056] Figure 1 A schematic diagram of the overall architecture of a display device provided for related technologies;

[0057] Figure 2 A schematic diagram of the overall architecture of another display device provided for related technologies;

[0058] Figure 3 A schematic diagram of a module structure of a display chip provided by an embodiment of the present invention;

[0059] Figure 4 A schematic structural diagram of a display device provided with a display chip provided in an embodiment of the present invention;

[0060] Figure 5 A schematic diagram of the format of a P2P protocol data packet provided for related technologies;

[0061] Fig. 6A A schematic diagram of the format of a P2P protocol data packet provided by an embodiment of the present invention;

[0062] Figure 6B A schematic diagram of the format of another P2P protocol data packet provided by an embodiment of the present invention;

[0063] Figure 7 A schematic structural diagram of another display device provided with a display chip provided in an embodiment of the present invention;

[0064] Figure 8 A schematic diagram of the format of a VbyOne protocol data packet provided for related technology;

[0065] Fig. 9A A schematic diagram of the format of a VbyOne protocol data packet provided by an embodiment of the present invention;

[0066] Fig. 9B A schematic diagram of the format of another VbyOne protocol data packet provided by an embodiment of the present invention;

[0067] Fig.10 A schematic structural diagram of another display device provided with a display chip provided in an embodiment of the present invention;

[0068] Fig.11 A schematic diagram of a working process of a display control method of a display chip provided by an embodiment of the present invention;

[0069] Fig.12 A schematic structural diagram of another display device provided with a display chip provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0070] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0071] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention 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 more sophisticated zone 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 (Organic Light-Emitting Diode)-based display devices, and have a more superior cost-effectiveness. Therefore, it has become a mainstream product in the TV market and is widely favored by consumers.

[0073] Figure 1 The overall architecture diagram of the existing display device based on Mini LED backlight technology is shown. Figure 1As shown, the existing display device 100 based on Mini LED backlight technology generally includes a SoC (English: System-on-Chip, Chinese: System-level chip) 110, a TCON 120, a dimming controller 130, a backlight panel 140 and a display panel 150, the SoC 110 is connected to the TCON 120 and the dimming controller 130 respectively, the TCON 120 is connected to the display panel 150, and the dimming controller 130 is connected to the backlight panel 140; wherein:

[0074] like Figure 1 As shown, SoC 110 and TCON 120 can communicate based on VbyOne (English: Video byOne) protocol or eDP (English: Embedded Display Port, Chinese: Embedded Display Port) protocol, and TCON 120 and display panel 150 can communicate based on P2P (English: Point toPoint, Chinese: Point to Point) protocol. Specifically, SoC 110 will send initial image data to TCON 120 based on VbyOne protocol or eDP protocol; after receiving the initial image data, TCON 120 processes the data to generate target image data and timing control data, for example, generates GOATiming (English: Gate On Array Timing, Chinese: Array Gate Timing) data, and sends the generated target image data and timing control data to display panel 150 based on P2P protocol; display panel 150 displays images normally according to the target image data and timing control data.

[0075] Another example Figure 1 As shown, the SoC 110 and the dimming controller 130 can communicate based on the SPI protocol, and the dimming controller 130 and the backlight panel 140 can communicate based on the single-wire transmission protocol or the SPI protocol. Specifically, the SoC 110 sends initial dimming data to the dimming controller 130 using the SPI protocol, for example, sends 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 based on the single-wire transmission protocol or the SPI protocol; the backlight panel 140 is provided with a plurality of dimmers (English: Dimmer) and backlight sources connected to each dimmer, and after receiving the target dimming data, the dimmer on the backlight panel 140 controls the brightness of the backlight source connected thereto based on the target dimming data, so as to provide backlight for the display panel 150.

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

[0077] Figure 2 (b) is a schematic diagram of the structure of the backlight side in the display device 100, wherein 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 dimmer 141 is connected to one or more backlight sources 142, and the backlight source 142 can be Mini LED; multiple dimmers 141 located in the same column are connected in series through the data line 143. In this way, the dimming controller 130 can send the 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 to itself according to the current setting data and PWM setting data in the received target dimming data.

[0078] Therefore, in the above-mentioned display device, a TCON board and a dimming controller board need to be made separately for controlling the display panel and the backlight panel respectively. This separate control method will occupy more internal interfaces, resulting in complex wiring inside the device and higher product cost of the display device.

[0079] Based on this, the embodiments of the present invention provide a display chip, a display control method of the display chip and a display device, which integrate the existing TCON and dimming controller to simplify the internal wiring of the display system, reduce the interface occupancy rate and reduce product cost.

[0080] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention, and the embodiments of the present invention and the features in the embodiments can be combined with each other if there is no conflict.

[0081] The display chip provided by the embodiment of the present invention is specifically introduced below with reference to the accompanying drawings:

[0082] Figure 3FIG. 4 shows a schematic diagram of a module structure of a display chip provided by an embodiment of the present invention, such as Figure 3 As shown, 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 may 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 may be configured to receive 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 inside the TCON chip to form the display chip in the embodiment of the present invention. In addition, the TCON chip can use a conventional version of the TCON chip or a simplified version of the TCON chip, and the embodiment of the present invention does not impose any restrictions on this. When the display chip integrates the dimming controller chip in the simplified version of the TCON chip, the display chip only supports the basic functions of the TCON chip, and functions such as image quality processing will be completed by the previous chip of the display chip, such as SoC, which can further save product costs and simplify the design of the screen circuit.

[0086] In the display chip provided in the embodiment of the present invention, by integrating the display control function and the dimming control function into one display chip, the circuit complexity inside the display system based on the display chip can be simplified. Compared with the method of controlling the display panel through TCON and controlling the backlight panel through the dimming controller in the prior art, the internal wiring of the display system can be effectively simplified and the interface occupancy rate can be reduced. In addition, by integrating the image data and the dimming data into one display chip for processing, the response speed and processing efficiency of the chip can be effectively improved, forming an integration advantage, improving the product image quality, and improving the market competitiveness of the product.

[0087] Figure 4 FIG. 1 shows a schematic diagram of a structure of a display device provided with a display chip according to an embodiment of the present invention. Figure 4 As shown, 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 respectively connected to the processor 310, the backlight panel 320 and the display panel 330. In the embodiment of the present invention, the display chip 200 may also include three interfaces, namely a first interface, a second interface and a third interface, wherein:

[0088] The first interface of the display chip 200 is connected to the input interface of the display panel 330. In this structure, the output interface of the processor 310 supports the 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. The first image data includes pixel data and timing control data. In the embodiment of the present invention, 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 present invention may adopt a P2P protocol, or a CSPI (China Standard Point-to-Point Interface, Chinese: High-Speed ​​Point-to-Point Transmission) protocol, or a USI-T (Unified Standard Interface for TV, Chinese: Unified Standard Interface for TV) protocol. Of course, other suitable point-to-point protocols may also be adopted, and the embodiment of the present invention does not impose any restrictions on this.

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

[0091] Furthermore, the second interface of the display chip 200 is connected to the input interface of the backlight panel 320, so that the two can communicate through a serial peripheral interface protocol, such as the SPI protocol, that is, the display chip 200 can send 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, it determines the operating current of the backlight source connected to it according to the current setting data, and generates a PWM control signal based on the PWM setting data to control the luminous brightness of the backlight source connected to the dimmer.

[0092] Of course, the display chip 200 and the backlight panel 320 may also be connected via a self-developed single-line transmission interface, and the embodiment of the present invention does not impose any limitation on this.

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

[0094] Method 1:

[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, and the display-related data includes the second image data. After receiving the display-related data, the display control module 210 in the display chip 200 parses it to obtain the second image data; and determines the first dimming data according to the second image data, and performs data conversion processing on the second image data to obtain the 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 of the subsequent 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 subsequent backlight panel 320. In this way, the backlight panel 320 can provide backlight for the display panel 330 according to the second dimming data; 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, there is no need to separately manufacture a TCON board and a dimming controller board, and only one board carrying the display chip provided by the embodiment of the present invention needs to be manufactured, thereby saving the board manufacturing cost, reducing the product cost, and improving the market competitiveness of the product.

[0098] Method 2:

[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, wherein the display-related data includes second image data and first dimming data; after receiving the display-related data, the display control module 210 in the display chip 200 parses the data 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; then, the second image data is converted to obtain the 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 subsequent display panel 330.

[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 subsequent backlight panel 320. In this way, the backlight panel 320 can provide backlight for the display panel 330 according to the second dimming data; the display panel 330 can display images according to the first image data.

[0101] However, the current point-to-point protocol only supports the transmission of image data, and does not support the transmission of image data and dimming data at the same time. For the sake of illustration, the following embodiments take the P2P protocol as an example: Figure 5 A schematic diagram of the format of an existing P2P protocol data packet is shown, such as Figure 5 As shown, a P2P protocol data packet generally includes a plurality of data areas (data area 1 to data area M), a set data area and a vertical blanking (English: VerticalBlanking) area, wherein:

[0102] like Figure 5 As shown, each data area includes a horizontal blanking area (HBK), BAC (Bit Alignment Code), POL mark, RGB data and EOL (End of Line). The setting data area includes HBK, BAC data, setting data, Gamma mapping data and EOL mark. The vertical blanking area includes HBK, BAC data, BKPOL mark and VBK.

[0103] Among them, BAC data is used to represent the identification codes that match each other between the communicating parties (in the embodiment of the present invention, it refers to the display chip 200 and the source driver IC in the display panel 330). The POL identifier is used to represent the polarity of the scan line corresponding to the data area. For example, if the POL identifier in data area 1 is "+", it means that the polarity of the scan line connected to the first pixel row in the display panel 330 is "+"; if the POL identifier in data area 2 is "-", it means that the polarity of the scan line connected to the second pixel row in the display panel 330 is "-", and so on. RGB data is the pixel data corresponding to a pixel row (i.e., the image sub-data in the subsequent embodiments). For example, the RGB data in data area 1 is the pixel data corresponding to each pixel unit in the first pixel row, and the RGB data in data area 2 is the pixel data corresponding to each pixel unit in the second pixel row, and so on.

[0104] Depend on Figure 5 It can be seen that the existing P2P protocol does not support the transmission of dimming data, but only supports the transmission of image data. Therefore, the implementation of the present invention innovatively integrates the dimming data into the data standard of the P2P protocol. In this way, compared with the method in the prior art that requires a separate SPI to be introduced in the processor to transmit dimming data, the method in the embodiment of the present invention can reduce the interface occupancy rate of the processor, reduce the wiring between the processor and the display chip, and thus simplify the system wiring. The specific implementation method is as follows:

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

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

[0107] Fig. 6A A schematic diagram of the format of a P2P protocol data packet provided by an embodiment of the present invention is shown, Fig. 6AAs shown, the P2P protocol data includes multiple data areas (data area 1 to data area M), a set data area and a vertical blanking area; each data area includes HBK, BAC data, POL mark, image sub-data and EOL mark. The set data area includes HBK, BAC data, setting data, Gamma mapping data and EOL mark. The vertical blanking area includes HBK, BAC data, BKPOL mark and the first dimming data, that is, the first dimming data is transmitted in the VBK corresponding data bit in the vertical blanking area, and is transmitted once per frame.

[0108] certainly, Fig. 6A The vertical blanking area shown includes two rows of VBK, that is, the first dimming data is added to the data bits corresponding to the two rows of VBK in sequence. If the data volume of the first dimming data is large, the number of rows of VBK in the vertical blanking area can be flexibly adjusted, and the embodiment of the present invention does not limit this.

[0109] Therefore, by modifying the communication protocol between the display chip and the processor, that is, 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 method in which a separate channel is required between the processor and TCON to transmit image data, and a separate channel is also 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 routing, and reduce product costs.

[0110] In some embodiments, in display-related data, the second image data includes multiple image sub-data, and the multiple 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; wherein, one image sub-data is pixel data corresponding to a pixel row in a frame of image, one 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 on a frame of image.

[0111] In a specific implementation, the display-related data may exist in the form of a data packet, and the second preset order may be the row order of each pixel row corresponding to the image sub-data. For example, the second preset order may be in the order from the first pixel row to the last pixel row. In the improved P2P protocol data packet, in the process of transmitting the image sub-data corresponding to each pixel row in row order, after the image sub-data corresponding to each pixel row is transmitted, the dimming sub-data corresponding to the image sub-data is transmitted immediately, and then the EOL identifier is transmitted to complete the transmission of the image sub-data corresponding to a pixel row and the dimming sub-data corresponding to the backlight row corresponding to the pixel row, until the display-related data corresponding to a frame of image is transmitted.

[0112] It should be noted that, in the embodiment of the present invention, the first preset order and the second preset order may be the same or different, and may be flexibly set according to actual business requirements, and the embodiment of the present invention does not impose any limitation on this.

[0113] Figure 6B FIG. 4 shows a schematic diagram of the format of another P2P protocol data packet provided by an embodiment of the present invention, such as Figure 6B As shown, the P2P protocol data includes multiple data areas (data area 1 to data area M), a set data area and a vertical blanking area; each data area includes HBK, BAC data, POL mark, image sub-data, dimming sub-data and EOL mark, that is, the dimming sub-data is set after the image sub-data for transmission. The set data area includes HBK, BAC data, setting data, Gamma mapping data and EOL mark. The vertical blanking area includes HBK, BAC data, BKPOL mark and VBK.

[0114] For example, for data area 1, it includes image sub-data corresponding to the first pixel row and dimming sub-data corresponding to the first backlight row, and the first backlight row is composed of one or more rows of backlight sources corresponding to the first pixel row. For data area 2, it includes image sub-data corresponding to the second pixel row and dimming sub-data corresponding to the second backlight row, and the second backlight row is composed of one or more rows of backlight sources corresponding to the second pixel row. And so on.

[0115] Therefore, the communication protocol between the display chip and the processor is modified, that is, in the display-related data, the corresponding dimming sub-data is added after each image sub-data, so that the communication protocol between the display chip and the preceding chip can support the transmission of display-related data including image data and dimming data. In this way, the time interval between the transmission of image data and the corresponding dimming data can be shortened, and the backlight is turned on synchronously with the LCD display to adapt to low-latency application scenarios and improve the display effect of the display product.

[0116] Figure 7FIG. 4 shows a schematic diagram of the structure of another display device provided with a display chip according to 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, so that the two can communicate through the high-speed serial video transmission protocol, wherein the high-speed serial video transmission protocol can adopt the VbyOne protocol. At this time, there are the following two processing methods:

[0117] Method 1:

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

[0121] However, the current high-speed serial video transmission protocol only supports the transmission of image data, and does not support the transmission of image data and dimming data at the same time. The following example uses the VbyOne protocol in the high-speed serial video transmission protocol as an example:

[0122] Figure 8 FIG. 2 shows a schematic diagram of the format of an existing VbyOne protocol data packet. Figure 8 As shown, for the image data corresponding to a frame of image, the image data is transmitted in units of lines, that is, the image data corresponding to the first pixel row is transmitted first, and then the line blanking area (i.e., the horizontal blanking area) is entered, and then the image data corresponding to the second pixel row is transmitted, and then the line blanking area is entered, 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 the embodiment of the present invention, in order to enable the VbyOne protocol to support the simultaneous transmission of the second image data and the first dimming data, the VbyOne protocol is modified and upgraded, and the specific implementation method is as follows:

[0124] Fig. 9A The structure of a VbyOne protocol data packet provided by an embodiment of the present invention is shown as follows: Fig. 9A As shown, for the image data corresponding to a frame of image, the image data is transmitted in units of rows, that is, the image sub-data corresponding to the first pixel row is transmitted first, and then the row blanking area is entered, and then the image sub-data corresponding to the second pixel row is transmitted, and then the row blanking area is entered, and so on, until the image sub-data corresponding to the last pixel row is transmitted, and then the vertical blanking area is entered, and the first dimming data is transmitted in the vertical blanking area.

[0125] Fig. 9B FIG. 4 shows another structure of a VbyOne protocol data packet provided by an embodiment of the present invention. Fig. 9B As shown, for the image data corresponding to a frame of image, the image data is transmitted in units of rows, that is, the image sub-data corresponding to the first pixel row is transmitted first, and then the row blanking area is entered, and the dimming sub-data corresponding to the first backlight row is transmitted in the row blanking area, and the first backlight row is composed of one or more rows of backlight sources corresponding to the first pixel row; then the image sub-data corresponding to the second pixel row is transmitted, and then the row blanking area is entered, and the dimming sub-data corresponding to the second backlight row is transmitted in the row blanking area, 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] Fig.10 FIG. 4 shows a schematic diagram of the structure of another display device provided with a display chip according to an embodiment of the present invention. Fig.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 that the two can communicate through the embedded display port protocol, wherein the embedded display port protocol can adopt the eDP protocol.

[0127] In addition, since the embedded display port protocol itself supports backlight control through the AUX chanel, Fig.10 In the structure shown, the processor 310 can send display-related data including only the second image data to the display chip 200 based on the embedded display port protocol, or can send display-related data including the second image data and the first dimming data to the display chip 200, so that the display chip 200 performs corresponding processing.

[0128] Therefore, no matter whether the display-related data transmitted to the display chip includes the second image data and the first backlight data, or only includes the second image data, the display chip and the processor can use a point-to-point protocol for data communication, or a high-speed serial video transmission protocol for data communication, or an embedded display port protocol for data communication, which improves the flexibility of the setting.

[0129] In some embodiments, a communication line may be independently derived from the processor 310 to connect to the display chip 200 , such as an SPI communication line, for transmitting the first dimming data to the display chip 200 through the communication line.

[0130] Based on the same concept, an embodiment of the present invention further provides a display control method for a display chip. Since the principle of solving the problem by the method is similar to that of the display chip, the implementation of the method can refer to the implementation of the display chip, and the repeated parts will not be repeated.

[0131] like Fig.11 As shown, the method may 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 display-related data, and sending the first image data to the display panel;

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

[0135] In some embodiments, if 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:

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

[0137] The second image data is subjected to data conversion processing 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 in a first preset order, and the first dimming data is located after the last image sub-data;

[0139] 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 on one frame of image.

[0140] 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 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;

[0141] Among them, one image sub-data is pixel data corresponding to a pixel row in a frame of image, one 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 on a 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 DisplayPort protocol.

[0144] In some embodiments, if the display-related data includes the second image data, determining the first image data and the first dimming data based on the display-related data includes:

[0145] parsing the display-related data to obtain second image data;

[0146] The first dimming data is determined according to the second image data, and the second image data is converted to obtain the first 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, an embodiment of the present invention further provides a display device. Since the principle of solving the problem by the display device is similar to that of the display chip, the implementation of the display device can refer to the implementation of the display chip, and the repeated parts will not be repeated.

[0149] like Figure 4 As shown, the display device 300 includes a processor 310, a backlight panel 320, a display panel 330, and a display chip 200 provided in any of the above embodiments, and the display chip 200 is connected to the processor 310, the backlight panel 320, and the display panel 330, respectively, wherein:

[0150] The processor 310 is used to output display-related data corresponding to a 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 provide backlight for the display panel 330 according to the second dimming data;

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

[0153] In some embodiments, the processor 310 and the display chip 200 communicate via a point-to-point protocol, or the processor 310 and the display chip 200 communicate via a high-speed serial video transmission protocol, or the processor 310 and the display chip 200 communicate 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 and the backlight panel 320 communicate via a serial peripheral port protocol, and the display chip 200 and the display panel 330 communicate 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, an embodiment of the present invention further provides a display device. The principle of solving the problem of the display device is similar to that of the aforementioned display chip, so the implementation of the display device can refer to the implementation of the aforementioned display chip, and the repeated parts will not be repeated.

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

[0159] In specific implementation, in the embodiment of the present invention, the display device may be a television, a personal computer, a notebook, etc. Other essential components of the display device are well understood by those skilled in the art, and are not described in detail here, nor should they be used as limitations on the present invention.

[0160] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0161] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A display chip, characterized in that: 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 send 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.

2. The display chip according to claim 1, characterized in that: The display-related data includes the second image data and the first dimming data; the display control module is specifically used for: 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; Perform data conversion processing on the second image data to obtain the first image data.

3. The display chip according to claim 2, characterized in that: 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 last image sub-data; Among them, one image sub-data is pixel data corresponding to a pixel row in the 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 on the one frame of image.

4. The display chip according to claim 2, characterized in that: 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; Among them, an image sub-data is pixel data corresponding to a pixel row in the frame of 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 on the frame of image.

5. The display chip according to claim 3 or 4, characterized in that: 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.

6. The display chip according to claim 2, characterized in that: The display-related data is generated based on an embedded DisplayPort protocol.

7. The display chip according to claim 1, wherein: The display-related data includes second image data; and the display control module is specifically used for: parsing the display-related data to obtain the second image data; The first dimming data is determined according to the second image data, and data conversion processing is performed on the second image data to obtain the first image data.

8. The display chip according to claim 7, characterized in that: 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.

9. A display control method for a display chip, characterized in that: include: 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; Based on the first dimming data, second dimming data is generated, and the second dimming data is sent to the backlight panel.

10. The method according to claim 9, characterized in that 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: 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; Perform data conversion processing on the second image data to obtain the first image data.

11. The method according to claim 10, characterized in that 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 last image sub-data; Among them, one image sub-data is pixel data corresponding to a pixel row in the 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 on the one frame of image.

12. The method according to claim 10, characterized in that 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; Among them, an image sub-data is pixel data corresponding to a pixel row in the frame of 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 on the frame of image.

13. The method according to claim 11 or 12, characterized in that 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.

14. The method according to claim 10, characterized in that The display-related data is generated based on an embedded DisplayPort protocol.

15. The method according to claim 9, characterized in that If the display-related data includes second image data, then determining the first image data and the first dimming data based on the display-related data includes: parsing the display-related data to obtain the second image data; The first dimming data is determined according to the second image data, and data conversion processing is performed on the second image data to obtain the first image data.

16. The method according to claim 15, characterized in that 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.

17. A display device, characterized in that: The device comprises a processor, a backlight panel, a display panel and a display chip as claimed in any one of claims 1 to 8, wherein the display chip is connected to the processor, the backlight panel and the display panel respectively, wherein: The processor is used to output display-related data corresponding to a frame of image to the display chip; The backlight panel is used to receive the 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 used to receive the first image data sent by the display chip and display an image according to the first image data.

18. The display device according to claim 17, characterized in that 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; The display-related data includes the second image data and the first dimming data, or the display-related data includes the second image data.

19. The display device according to claim 17 or 18, characterized in that: The display chip communicates with the backlight panel via a serial peripheral interface protocol, and the display chip communicates with the display panel via a 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.

20. A display device, characterized in that: The device comprises a display panel, a backlight panel and a control panel, wherein the control panel carries a display chip according to any one of claims 1 to 8, wherein: The control panel is connected to the display panel and the backlight panel respectively, and the display panel is arranged opposite to the backlight panel.

Images