Universal Display Control PCB with Self-Identifying Metal Plate
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Solution Overview
Problem
Existing display units require multiple types of display control printed circuit boards to accommodate different sizes and specifications of liquid-crystal display panels, leading to complex manufacturing and potential assembly errors, and increased maintenance parts due to the need for varying circuit boards based on panel size.
Innovation Solution
A display unit design where a shared display control printed circuit board is used with a fixing metal plate that varies in size to match the display panel, allowing identification information to be read from the metal plate to set appropriate signal parameters for the display panel, regardless of size, using identification pads or conductive pins for electrical connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple types of display control printed circuit boards are provided to match different display panel sizes, then the display unit can accommodate various panel specifications, but the device complexity and number of parts increase
Solution Approach 1:
The fixing metal plate is designed with variable configurations (different numbers and positions of through-holes) to accommodate different display panel sizes. A single universal display control printed circuit board can work with all panel sizes by changing the fixing metal plate configuration, eliminating the need for multiple specialized circuit boards.
Solution Approach 2:
The fixing metal plate is made reconfigurable through movable pins that can be positioned at different locations to create different patterns of through-holes. This dynamic adjustment allows the same metal plate to adapt to various display panel sizes and specifications.
2Manufacturing precision
If multiple types of display control printed circuit boards are used for different panel sizes, then proper signal generation is possible, but manufacturing control becomes complex and assembly errors increase
Solution Approach 1:
The system automatically determines the required display panel specifications by detecting the configuration of through-holes in the fixing metal plate. This self-detection mechanism eliminates the need for manual configuration or complex production control, reducing assembly errors and simplifying manufacturing.
3Reliability
If the display control printed circuit board is made specific to each panel size, then correct display signals are generated, but the number of maintenance parts increases
Solution Approach 1:
A single universal display control printed circuit board can serve all display panel sizes by detecting the fixing metal plate configuration and automatically adjusting its operation. This eliminates the need for multiple specialized circuit boards, reducing maintenance parts and simplifying repairs.
4Device complexity
If a single display control printed circuit board is used for all panel sizes, then parts inventory is reduced, but the ability to generate correct signals for each panel type is lost
Solution Approach 1:
The display control printed circuit board detects the configuration of through-holes in the fixing metal plate and uses this feedback information to automatically determine the correct display panel specifications. This feedback mechanism enables a single circuit board to generate accurate signals for different panel sizes without requiring multiple specialized boards.
Data Source
AI summary
Disclosed is a display unit provided with a display control printed circuit board with a circuit configured to generate a display signal for display by a display panel and a fixing metal plate for securing the display control printed circuit board. The display control printed circuit board is provided with identification information reading means for reading identification information of the display panel, a memory stored with set values for generating display signals corresponding to the sizes of a plurality of display panels, and a display controller configured to generate the display signals. The fixing metal plate comprises one or more members electrically connected to the display control printed circuit board and configured to transmit the identification information of the display unit to the display control printed circuit board. The identification information reading means reads a set value for the display panel from the memory, based on the identification information of the display panel derived from the one or more electrically connected members, and sets the set values in the display controller configured to generate the display signals.