Electrophoretic Display Gate Line Pulse Width Control
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Solution Overview
Problem
Current electrophoretic display apparatuses have slow response times due to limitations in material characteristics and traditional display image updating methods, affecting market competitiveness.
Innovation Solution
The method involves dividing gate lines into two groups, where only pixels requiring updates receive a second type gate pulse with a predetermined pulse width, while pixels in the first group receive a shorter first type gate pulse, allowing for dynamic adjustment of pulse durations to reduce the overall image updating time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional display image updating method is used, then all pixels are updated simultaneously, but the response time is slow
Solution Approach 1:
The patent divides the gate lines into multiple groups (first group and second group) based on whether their corresponding pixels need data updating. The first group gate lines receive first type gate pulses while the second group gate lines receive second type gate pulses, enabling selective updating of only necessary pixels and reducing overall response time
Solution Approach 2:
The patent dynamically adjusts the pulse width of gate pulses based on the updating requirements. Second type gate pulses have a predetermined pulse width for pixels needing updates, while first type gate pulses have a shorter pulse width for pixels not needing updates, optimizing the updating process dynamically
2Reliability
If all pixels are updated when image needs updating, then display data is refreshed, but unnecessary updates waste time and energy
Solution Approach 1:
The patent applies different gate pulse types to different gate line groups based on their specific updating needs. The first group gate lines (where pixels don't need updates) receive first type gate pulses with shorter duration, while the second group gate lines (where pixels need updates) receive second type gate pulses with predetermined duration, achieving localized optimization
Solution Approach 2:
Instead of updating all pixels completely, the patent applies partial action by only updating pixels in the second group that actually need data changes, while maintaining display data for pixels in the first group, thereby avoiding unnecessary updates
Data Source
AI summary
A method for updating display image of an electrophoretic display panel and an electrophoretic display apparatus using the same are provided. In the aforementioned method, the gate lines of the electrophoretic display panel are divided into a first group and a second group. The display data related to pixels coupled to the gate lines of the first group need not to be updated. Furthermore, the display data related to at least one of the pixels coupled to the gate lines of the second group need to be updated. The first type gate pulses are provided to the gate lines of the first group respectively, and second type gate pulses are provided to the gate lines of the second group respectively. The second type gate pulse has a predetermined pulse width. The pulse width of the first type gate pulse is shorter than the predetermined pulse width.