Display Driver Chip Signal Storage for Panel Testing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The current display panel testing process requires extra labor to connect the TCON board and connection board, and the TCON board is frequently damaged during repeat uses, due to the absence of a timer-control-register board during high temperature and high moisture tests in the production line.
Innovation Solution
A testing method and display device where an image signal is stored in the driver chip of the display panel, allowing direct retrieval of the signal for testing, eliminating the need for a TCON board and reducing labor and damage by providing a power and clock signal for testing based on preset conditions, including time, voltage, and current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a TCON board is used for signal transmission during high temperature and high moisture tests, then the display panel can be lit up for testing, but extra labor force is required to connect the TCON board and the connection board, and the TCON board is frequently damaged after repeat uses
Solution Approach 1:
The patent extracts the image signal storage function from the external TCON board and integrates it directly into the driver chip of the display panel. This eliminates the need for the separate TCON board and its complex connections, while maintaining the ability to perform high temperature and high moisture tests. The driver chip now contains the test image signals internally, allowing direct testing without external board connections.
Solution Approach 2:
The patent merges the TCON board functionality with the driver chip by integrating the image signal storage and processing capabilities directly into the display panel's driver chip. This consolidation eliminates the separate TCON board component and its connection interfaces, simplifying the testing system while maintaining test functionality.
2Reliability
If a TCON board is used for signal transmission during tests, then the display panel can be tested, but the TCON board is frequently damaged after repeat uses in tests
Solution Approach 1:
The patent removes the TCON board from the testing system entirely by extracting its essential function (image signal transmission) and integrating it into the driver chip. This eliminates the TCON board's exposure to harsh test conditions (high temperature and high moisture), preventing its frequent damage and extending system reliability.
Solution Approach 2:
The display panel's driver chip serves itself by storing and providing test image signals internally, eliminating the need for external TCON board assistance. This self-service capability protects the system from the TCON board's vulnerability to environmental damage during repeated testing cycles.
3Reliability
If a TCON board is connected externally for testing, then signal transmission can be achieved, but extra labor force is required to connect the boards
Solution Approach 1:
The patent extracts the signal transmission function from the external TCON board connection and integrates it into the driver chip. This eliminates the manual connection step between TCON board and connection board, allowing testing to proceed directly without additional labor, thereby improving testing efficiency while maintaining signal transmission reliability.
Solution Approach 2:
The driver chip provides signal transmission services internally without requiring external TCON board connections. This self-service approach eliminates manual intervention for board connections, streamlining the testing process and improving productivity.
Data Source
AI summary
A display device and a testing method for a display panel are provided. The testing method for the display panel includes the steps of: storing an image signal for controlling the display panel to display a default image in a driver chip of the display panel, providing a power signal and a clock signal to the display panel, and retrieving the image signal and testing the display panel according to a preset test condition.