US 11,862,123 B1
Display driving method and device, liquid crystal controller, display system and projection device
Xianxiong Zhu, Guangdong (CN); Chunrong Fan, Guangdong (CN); and Degang Lei, Guangdong (CN)
Assigned to SHENZHEN KEJINMING ELECTRONIC CO., LTD, Shenzhen (CN)
Filed by SHENZHEN KEJINMING ELECTRONIC CO., LTD, Guangdong (CN)
Filed on Sep. 1, 2023, as Appl. No. 18/241,429.
Claims priority of application No. 202211214910.0 (CN), filed on Sep. 30, 2022.
Int. Cl. G09G 3/36 (2006.01); G09G 3/00 (2006.01)
CPC G09G 3/3674 (2013.01) [G09G 3/002 (2013.01); G09G 3/3655 (2013.01); G09G 2300/0452 (2013.01); G09G 2300/0478 (2013.01); G09G 2340/08 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A display driving method, used for a display system, the display system comprises a liquid crystal controller, a liquid crystal module and a plurality of LCD drivers, wherein the display driving method comprises:
acquiring, by the liquid crystal controller, driving configuration information of the liquid crystal module, the driving configuration information is used for indicating the number of configured LCD drivers;
receiving, by the liquid crystal controller, a color image frame, and decomposing the color image frame into 3 monochrome frame images;
performing, by the liquid crystal controller, segmentation processing on each monochrome frame image according to the driving configuration information to obtain monochrome frame segmentation image data corresponding to each display area of the liquid crystal module;
packaging, by the liquid crystal controller, the monochrome frame segmentation image data corresponding to each display area, and sending data to the LCD driver corresponding to each display area; when the liquid crystal controller starts to output each monochrome frame, a monochrome frame color indication signal is simultaneously output to a backlight module to indicate a current output color frame;
after the LCD driver receives the monochrome frame segmentation image data, writing, according to display control information of the corresponding display area and the received monochrome frame segmentation image data, by the LCD driver, the received monochrome frame segmentation image data into the liquid crystal module to drive the display area corresponding to the liquid crystal module to display, and meanwhile after writing a line, outputting a synchronization signal to instruct the corresponding backlight module to start synchronously controlling a backlight delay circuit action; and
packaging, by the liquid crystal controller, data; in each line of signal of the monochrome frame segmentation image data of the corresponding LCD driver, 3 consecutive pixel points are taken as one RGB protocol point in a standard color protocol; if the number of pixel points of a current line in the display area is not a multiple of 3, then it is filled with “0”, until it is enough to form a full protocol point; and connecting, by the LCD driver, circuit of a pixel point with 3 colors to three adjacent monochrome points of the liquid crystal module.