Backlight Module Integrated Circuit Eliminates FPCA
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Solution Overview
Problem
Conventional flexible printed circuit assemblies (FPCAs) used to connect control circuit boards and liquid crystal panels occupy significant volume and weight, hindering the thinning and lightweight goals of electronic products.
Innovation Solution
A backlight module with integrated first and second connecting terminals and a processing circuit formed on one side, eliminating the need for conventional FPCAs by directly connecting the liquid crystal panel and control circuit board, and enabling signal processing and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If FPCA is used to connect control circuit board and liquid crystal panel, then connection function is achieved, but thickness and weight of device increase
Solution Approach 1:
The patent merges the processing circuit with the backlight module by integrating it into the driver circuit board that also serves as the backlight driver. This combination eliminates the need for separate FPCA components, thereby reducing overall device weight while maintaining the connection function between the control circuit board and liquid crystal panel.
2Reliability
If FPCA is used to connect control circuit board and liquid crystal panel, then connection function is achieved, but device thickness increases
Solution Approach 1:
The processing circuit is integrated into the backlight module's driver circuit board, which consolidates multiple functions into a single component. This merging reduces the number of separate layers and connection components needed, thereby reducing device thickness while preserving the connection function.
3Reliability
If processing circuit is formed on FPCA, then signal processing is achieved, but production efficiency is reduced and cost increases
Solution Approach 1:
The processing circuit is integrated directly into the backlight module's driver circuit board, which consolidates multiple functions into a single component. This merging reduces the number of separate layers and connection components needed, thereby reducing device thickness while preserving the connection function.
Data Source
AI summary
The present application discloses a backlight module and a liquid crystal display device, the backlight module includes a first connecting terminal disposed on the backlight module for connecting the liquid crystal panel; a second connecting terminal disposed on the backlight module for connecting the control circuit board; a processing circuit is formed on one side of the backlight module to connect to the first connecting terminal and the second connecting terminal, respectively, and for realizing the signal processing and the connection between the liquid crystal panel and the control circuit board. The application can eliminate the conventional FPCA and reducing the thickness and weight of the liquid crystal display device.