Display Device Driving Data and Panel Characteristic Data Separation
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Solution Overview
Problem
Existing display device manufacturing processes face inefficiencies due to the need to repeatedly measure image quality characteristics for updating driving data, which can result in lost panel characteristic data and increased operation time, especially when updating or restoring the driving algorithm or timing.
Innovation Solution
A display device architecture that separates driving data and panel characteristic data, allowing them to be stored and updated independently, with a timing controller (TCON) communicating with driving memory, panel memory, and gamma IC to generate reference voltages and control signals, using I2C serial communication, thereby reducing the need for repeated image quality measurements and preventing data loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If driving data and panel characteristic data are stored together in a single driving file, then data management is simplified, but updating driving data requires repeated measurement of image quality characteristics causing loss of panel characteristic data and increased operation time
Solution Approach 1:
The patent divides the previously unified driving file into two separate storage locations: driving data is stored in driving memory on the control board, while panel characteristic data is stored in panel memory on the source board. This segmentation allows independent updating of driving data without affecting panel characteristic data, eliminating the need for repeated image quality measurements and reducing manufacturing operation time.
2Productivity
If driving data is updated frequently to optimize driving algorithm, then driving performance is improved, but panel characteristic data may disappear due to repeated updates
Solution Approach 1:
By separating driving data storage (in driving memory) from panel characteristic data storage (in panel memory), the system allows frequent updates of driving data for algorithm optimization without risking loss of panel characteristic data. The panel characteristic data remains preserved on the source board while driving data can be updated on the control board.
Solution Approach 2:
The panel characteristic data is measured and stored in advance during the manufacturing process in the panel memory. This preliminary action ensures that the panel characteristic data is captured once and preserved, eliminating the need for repeated measurements during subsequent driving data updates.
3Manufacturing precision
If image quality characteristics are measured repeatedly to update driving data, then driving data accuracy is maintained, but manufacturing efficiency decreases
Solution Approach 1:
The system performs image quality characteristic measurement once during manufacturing and stores the results as panel characteristic data in the panel memory. This preliminary measurement maintains driving data accuracy while eliminating the need for repeated measurements, thereby significantly improving manufacturing efficiency.
Solution Approach 2:
The panel characteristic data serves as a permanent copy of the image quality characteristics that can be referenced during driving data updates without requiring actual repeated measurements. This copying approach maintains accuracy while improving efficiency.
Data Source
AI summary
A display device Includes a control board including a timing controller (TCON) for controlling driving of the display device, and further including a driving memory for storing driving data for driving the display device, and a source board coupled to the control board by a connection cable, the source board including a driving integrated circuit (IC) for outputting a data signal, and further including a panel memory for storing panel characteristic data for compensating for the data signal.