Liquid Crystal Controller Segmentation for Parallel Display Driving
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional LCD driving methods are inefficient in improving display refresh rate, especially for large images, due to the time-consuming process of writing color data line by line and fixed LCD flip time.
Innovation Solution
A display driving method that decomposes color image frames into monochrome frames, segments them according to display areas, and uses multiple LCD drivers to drive these areas in parallel, with synchronization signals to control the backlight, allowing for flexible configuration of display refresh rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single LCD driver is used to write color data line by line to the complete liquid crystal display area, then the display system is simple in structure, but the display refresh rate is low and difficult to improve
Solution Approach 1:
The liquid crystal display area is divided into multiple display areas, with each area driven by a separate LCD driver. The color image frame is decomposed into three monochrome frame images (RGB), and each monochrome frame is further segmented and assigned to different LCD drivers for parallel processing. This segmentation enables multiple drivers to work simultaneously, significantly improving the display refresh rate while maintaining manageable system complexity through modular architecture.
2Loss of time
If color data is written line by line to each pixel in the complete display area, then the data writing process is simple, but the time consumption per frame is high
Solution Approach 1:
The color image frame is decomposed into three separate monochrome frame images corresponding to red, green, and blue channels. Each monochrome frame is then segmented into multiple segments that can be processed in parallel by different LCD drivers. This segmentation transforms the sequential line-by-line writing process into parallel processing, dramatically reducing the time per frame and increasing display refresh rate.
Solution Approach 2:
The color image frame is pre-decomposed into three monochrome frame images before being sent to the LCD drivers. This preliminary decomposition allows the subsequent parallel processing to proceed more efficiently, as each driver receives pre-processed data that requires minimal additional processing, thereby reducing overall frame processing time.
3Productivity
If the liquid crystal controller processes the complete color image frame without decomposition, then the processing workflow is simple, but the display refresh rate cannot be improved
Solution Approach 1:
The liquid crystal controller decomposes the complete color image frame into three monochrome frame images and further segments them for distribution to multiple LCD drivers. This segmentation increases processing complexity at the controller level but enables parallel processing that ultimately improves display refresh rate. The added complexity is offset by the significant performance gain in frame processing speed.
Data Source
AI summary
Provided are a display driving method and device, liquid crystal controller, display system and projection device. The method comprises: acquiring driving configuration information of the liquid crystal module, the driving configuration information is used for indicating the number of configured LCD drivers; receiving a color image frame, and decomposing the color image frame into 3 monochrome frame images; performing segmentation processing on each monochrome frame image to obtain monochrome frame segmentation image data corresponding to each display area of the liquid crystal module; packaging the monochrome frame segmentation image data corresponding to each display area, and sending data to the LCD driver corresponding to each display area; after the LCD driver receives the monochrome frame segmentation image data, writing, 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.