E-paper Display Driver Circuit Pre-driving for Faster Response
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Solution Overview
Problem
Current methods for driving e-paper displays to render line segments are slow, leading to a poor user experience due to the need to first receive an exact point before connecting it to the previous point.
Innovation Solution
The e-paper display device and method involve a driver circuit that pre-drives a display area to display a color according to the current line segment during one frame period and then adjusts the area, including the target line segment, during the next frame period to enhance response speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the e-paper display waits to receive the exact point before connecting it to the previous point to complete the line segment display, then the display accuracy is ensured, but the response speed becomes too slow
Solution Approach 1:
The patent applies preliminary action by pre-driving the display area during the current frame period based on the current line segment before the target line segment is fully received. This allows the display to start rendering earlier than waiting for complete line segment data, thereby reducing the overall response time while maintaining display accuracy through subsequent updates.
2Measurement precision
If the e-paper display processes the complete line segment before display, then the display precision is maintained, but the user experience deteriorates due to slow response
Solution Approach 1:
The driver circuit performs preliminary driving of the display area using the current line segment data before the target line segment data is complete. This preliminary display maintains sufficient precision for user perception while dramatically improving response speed, thereby enhancing user experience without sacrificing acceptable display quality.
Solution Approach 2:
The patent implements dynamic updating where the display area is initially driven with preliminary data and then updated with the complete target line segment data in the next frame period. This dynamic approach allows the system to balance between early display response and final display precision, providing good user experience while maintaining accuracy.
Data Source
AI summary
An e-paper display device, including a driver circuit. The driver circuit is coupled to the e-paper display panel and drives the e-paper display panel to display one or more line segments, which include a current display line segment and a target display line segment. During a frame period, the driver circuit pre-drives a display area to display a first color according to the current display line segment. At least part of the target display line segment is located in the display area. During a next frame period, the driver circuit drives a part of the display area excluding the target display line segment to display a second color and a part of the display area including the target display line segment to display the first color according to the target display line segment. A method for driving an e-paper display panel.