Display Device De-multiplexers with Variable Ratios
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Solution Overview
Problem
Conventional display devices with uniform de-multiplexers fail to adequately reduce the number of driver IC outputs, making it difficult to meet the demands of narrow-border displays.
Innovation Solution
A display device with de-multiplexers having different de-multiplex ratios, where de-multiplexers with larger ratios are applied to data buses with smaller loads and those with smaller ratios to data buses with larger loads, reducing the output number of the driver IC.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If de-multiplexers with the same de-multiplex ratio are applied, then the design is simple and uniform, but the output number of the driver IC cannot be significantly reduced
Solution Approach 1:
The patent applies de-multiplexers with different de-multiplex ratios to different data buses based on their specific load characteristics. Data buses with smaller loads are assigned de-multiplexers with larger ratios, while data buses with larger loads receive de-multiplexers with smaller ratios. This local optimization approach allows each de-multiplexer to be appropriately sized for its specific task, significantly reducing the overall output number of the driver IC while maintaining design effectiveness.
2Productivity
If de-multiplexers with larger de-multiplex ratios are used, then the output number of the driver IC is reduced, but the data bus load capacity is limited
Solution Approach 1:
The patent matches de-multiplexer capacity to data bus load requirements by applying de-multiplexers with larger ratios to data buses with smaller loads, and de-multiplexers with smaller ratios to data buses with larger loads. This ensures that each de-multiplexer operates within its capacity limits while collectively achieving significant reduction in driver IC output number.
Solution Approach 2:
The patent changes the de-multiplex ratio parameter of different de-multiplexers to match the load characteristics of different data buses. By adjusting this key parameter locally rather than using a uniform ratio, the system optimizes both the reduction of driver IC outputs and the handling capacity of data buses simultaneously.
3Quantity of substance
If de-multiplexers with smaller de-multiplex ratios are used, then the data bus load capacity is increased, but the output number of the driver IC cannot be significantly reduced
Solution Approach 1:
The patent strategically assigns de-multiplexers with smaller ratios only to data buses that require larger load capacity, rather than using them uniformly. This localized application ensures that data bus capacity requirements are met where necessary, while other data buses utilize de-multiplexers with larger ratios to maximize output number reduction.
Data Source
AI summary
A display device comprises a display area, a plurality of data buses located in the display area, a controller, a first de-multiplexer, and a second de-multiplexer. The controller is adapted to provide a first data signal and a second data signal. The first de-multiplexer has a first de-multiplexer ratio, and is adapted to output the first data signal received from the controller to a plurality of first data buses of the data buses. The second de-multiplexer has a second de-multiplexer ratio, and is adapted to output the second data signal received from the controller to a plurality of second data buses of the data buses. The first de-multiplexer ratio is different from the second de-multiplexer ratio.