Display Panel Driver Internal Evaluation Image Generation
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Solution Overview
Problem
Existing panel display devices face challenges in adjusting display characteristics such as color temperature and gamma value due to individual variations, leading to increased costs when using high-speed serial interfaces for video signal transmission in adjustment devices.
Innovation Solution
A display panel driver configuration that includes an image data generator, brightness correction circuit, and display timing generator, allowing for internal generation and switching of evaluation images, reducing the need for external video signal transmission and minimizing the cost of adjustment devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If high-speed serial interface is used for video signal transmission in adjustment devices, then display characteristic adjustment capability is improved, but device cost increases
Solution Approach 1:
The patent extracts the evaluation image generation function from external adjustment devices and relocates it into the display panel driver itself. This eliminates the need for external devices to have high-speed serial interface capabilities, thereby reducing their complexity and cost while maintaining the ability to adjust display characteristics.
Solution Approach 2:
The display panel driver is enhanced with multi-functionality by incorporating the evaluation image generation circuit. This single device now serves both as the display driver and as the evaluation image source, eliminating the need for separate external image generation equipment and reducing overall system cost.
2Ease of operation
If external video signal transmission is used for adjustment, then evaluation image display is achieved, but interface cost and complexity increase
Solution Approach 1:
The patent merges the evaluation image generation function with the display panel driver by integrating an evaluation image generation circuit inside the driver. This combination eliminates the need for separate external video signal transmission paths and high-speed serial interfaces, thereby reducing interface complexity and cost.
Solution Approach 2:
The display panel driver becomes self-sufficient by generating its own evaluation images internally. This self-service capability removes the dependency on external devices to provide test images, simplifying the overall system architecture and reducing interface requirements.
Data Source
AI summary
A display panel driver includes an image data generator, a brightness correction circuit performing a correction calculation on image data, a drive section driving the display panel in response to corrected image data; and a display timing generator outputting a timing control signal. The correction calculation by the brightness correction circuit is adjustable. When the display panel driver is placed into a test mode, the display timing generator is configured to output an internally-generated timing control signal and the image data generator outputs internally-generated evaluation image data. The evaluation image data are generated so that the evaluation images are switched from one to another in response to the internally-generated timing control signal.