Time-Division Contrast Analysis for Flexible Display Drivers
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Solution Overview
Problem
Flexible display apparatuses with multiple sub-display areas face increased power consumption and driver size due to the need for multiple contrast analysis cores, which is exacerbated by higher frame rates and the number of sub-display areas.
Innovation Solution
Implementing a time division method for contrast analysis cores, where the number of cores is determined by the number of sub-display areas and frame rate, with a contrast processor that adjusts image data based on analysis results, and using a multiplexer to selectively output processor cores, reducing the overall number of contrast analysis cores.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of contrast analysis cores is increased to compensate for multiple sub display areas, then the contrast compensation performance is improved, but the size of the display panel driver and power consumption increase
Solution Approach 1:
The patent applies time-division multiplexing to the contrast analysis cores, where a single core periodically serves multiple sub display areas by alternating between them in different time slots. This periodic action allows one core to handle contrast analysis for multiple areas sequentially, eliminating the need for dedicated cores for each sub display area, thus reducing power consumption while maintaining compensation performance.
Solution Approach 2:
The contrast analysis core is designed to be universal by enabling it to perform contrast analysis for multiple different sub display areas. Through configuration control and time-division switching, the same core can be assigned to different sub display areas at different times, making it a multi-functional component that serves multiple purposes without requiring multiple specialized cores.
2Reliability
If the number of contrast analysis cores is increased to compensate for multiple sub display areas, then the contrast compensation performance is improved, but the size of the display panel driver increases
Solution Approach 1:
The patent merges the functionality of multiple contrast analysis cores into a single shared core through time-division multiplexing. By combining the contrast analysis functions for multiple sub display areas into one core that operates in time slots, the overall driver size is reduced while the cumulative contrast compensation capability across all sub display areas is maintained.
Solution Approach 2:
The single contrast analysis core operates periodically, alternating between different sub display areas in a cyclic manner. This periodic operation allows the core to be shared across multiple areas over time, reducing the need for multiple simultaneous cores and thereby reducing the driver area while maintaining comprehensive contrast compensation coverage.
3Illumination intensity
If the frame rate is increased to improve display quality, then the display quality is improved, but the number of contrast analysis cores required increases
Solution Approach 1:
The time-division multiplexing system operates with periodic time slots that can be dynamically adjusted based on frame rate requirements. When higher frame rates are needed for improved display quality, the periodic scheduling system can allocate more frequent or longer time slots to the shared contrast analysis core, allowing it to process multiple sub display areas within the shorter frame period without requiring additional cores.
Data Source
AI summary
A display apparatus includes a display panel, a contrast analyzer, a contrast processor and a data driver. The display panel includes a plurality of sub display areas. The display panel is configured to display an image based on input image data. The contrast analyzer is configured to analyze the input image data in a time division method. The contrast processor is configured to adjust contrast of the input image data based on analysis result of the contrast analyzer. The data driver is configured to generate data voltages based on output data of the contrast processor. A number of contrast analysis cores of the contrast analyzer is determined according to a number of the sub display areas and a frame rate.