Dynamic Overdrive Table Loading for LCD Panel Cost Reduction
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Solution Overview
Problem
Conventional LCD panel overdrive methods require multiple table storage devices due to varying temperature and LC cell rotation requirements across different display regions, leading to increased chip size and production costs.
Innovation Solution
An overdrive apparatus that dynamically loads required overdrive look-up tables into table storage devices, using a data storage device, table storage devices, and a table access interface to selectively load and update tables on demand, reducing the overall number of storage devices needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple table storage devices are used to buffer overdrive look-up tables for different display regions, then the overdrive operation can be performed for each region with appropriate temperature and LC cell rotation requirements, but the overall size of table storage devices increases significantly
Solution Approach 1:
The patent merges multiple overdrive look-up tables into a single table storage device by implementing a dynamic loading mechanism. The system loads only the required look-up table into the single storage device based on the current display region being processed, rather than allocating separate storage devices for each region. This combining approach reduces the overall table storage device size while maintaining the ability to perform overdrive operations for different display regions with varying temperature and LC cell rotation requirements.
Solution Approach 2:
The patent implements a dynamic loading mechanism where the single table storage device dynamically loads different overdrive look-up tables based on the current display region being processed. The system determines which look-up table is needed based on region-specific parameters such as temperature and LC cell rotation requirements, then loads the appropriate table into the single storage device. This dynamic approach enables one storage device to serve multiple regions that would otherwise require separate dedicated storage devices.
2Reliability
If N table storage devices are allocated for N display regions, then each region has dedicated overdrive look-up table buffering capability, but the chip size and production cost increase
Solution Approach 1:
The patent combines multiple dedicated table storage devices into a single shared storage device that serves all display regions. By implementing a dynamic loading mechanism that loads the appropriate overdrive look-up table into the single storage device based on the current region being processed, the system maintains reliable overdrive operation for each region while reducing the total number of storage devices from N to one. This reduction directly lowers chip size and production costs.
Solution Approach 2:
The single table storage device is designed to be universal, serving multiple display regions with different temperature and LC cell rotation requirements. The device dynamically loads different overdrive look-up tables based on the current region being processed, making it multi-functional. This universal approach replaces N dedicated storage devices, reducing manufacturing complexity and production costs while maintaining the reliability needed for region-specific overdrive operations.
3Area of stationary object
If a single overdrive look-up table is used for all pixels in the display area, then the table storage device size is minimized, but the display quality deteriorates due to inability to account for regional temperature and LC cell rotation differences
Solution Approach 1:
The patent implements a dynamic loading mechanism in a single table storage device that loads different overdrive look-up tables based on the current display region being processed. This dynamic approach allows the system to use region-specific look-up tables that account for temperature and LC cell rotation differences, thereby maintaining high display quality. The single storage device dynamically adapts its contents to match the processing requirements of each region, eliminating the need for multiple dedicated storage devices while preserving display quality.
Data Source
AI summary
An overdrive apparatus includes a data storage device, a plurality of table storage devices, and a table access interface. The data storage device is arranged for storing a plurality of overdrive look-up tables corresponding to a plurality of first display regions included in a display area of a display apparatus. The table storage devices are arranged for storing a plurality of selected overdrive look-up tables, respectively. The table access interface is coupled between the data storage device and the table storage devices, and arranged for loading the selected overdrive look-up tables selected from the overdrive look-up tables stored in the data storage device into the table storage devices. The number of the table storage devices is smaller than the number of the display regions.