FPGA Integrated Board for LCD Panel–Backlight Synchronization
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Solution Overview
Problem
The synchronization issue between the LCD panel and the backlight module in liquid crystal display devices leads to flickering effects, particularly when switching between black and white images, due to asynchronous responses.
Innovation Solution
An integrated board with a Field Programmable Gate Array (FPGA) and a backlight driver unit on a single circuit board, which generates synchronized screen and backlight drive data to synchronize the LCD panel and backlight module responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate control modules are used for LCD panel and backlight module, then device functionality is complete, but response synchronization is poor causing flickering
Solution Approach 1:
The patent merges the LCD panel control module and backlight module control into a single integrated control module. This integration allows both the LCD panel and backlight module to be controlled simultaneously from the same control unit, eliminating the time delay and synchronization issues that caused flickering. The controller generates both LCD drive signals and backlight drive signals in coordination, ensuring that brightness changes and image display occur同步.
2Reliability
If integrated board is used, then response synchronization is improved, but device complexity increases
Solution Approach 1:
The patent integrates multiple control functions into a single control module that can generate both LCD panel drive signals and backlight module drive signals. This consolidation reduces the number of separate control units needed and simplifies the overall system architecture while improving synchronization accuracy between the LCD panel and backlight module.
Solution Approach 2:
The control module is designed with multi-functionality, capable of performing both LCD panel control and backlight module control functions. This universal controller can adapt to different display requirements and configure different control parameters for both modules, reducing the need for separate specialized control units and simplifying the system structure.
Data Source
AI summary
The present disclosure provides a liquid crystal display device and a control module thereof, and an integrated board, and relates to the field of display technologies. The integrated board includes a field programmable gate array and a backlight driver unit on a same circuit board. The field programmable gate array is configured to: receive screen data, generate screen synchronization data based on the screen data, and send the screen synchronization data to a liquid crystal display panel, and generate backlight drive data based on the screen data and send the backlight drive data to the backlight driver unit. The backlight driver unit is configured to receive the backlight drive data, where a delay between receiving the backlight drive data and receiving the screen synchronization data is less than one frame of time.