Dual-Pixel E-Ink Display Module for Faster Frame Refresh
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Solution Overview
Problem
E-Ink display panels suffer from prolonged response times and suboptimal refresh rates due to their electrophoretic mechanism, leading to perceptible latency during user interactions.
Innovation Solution
A display module design with dual pixel units per pixel, where each pixel unit receives data signals in alternating phases within a display cycle, allowing for the simultaneous display of two frames, thereby doubling the refresh rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional electrophoretic mechanism is used in E-Ink display panels, then reflective imaging technology is achieved, but response time is prolonged to around 400 milliseconds
Solution Approach 1:
The pixel electrode is divided into first and second pixel electrodes, and the common electrode is divided into first and second common electrodes. This segmentation allows different regions to operate in different phases, enabling simultaneous display of multiple frames and improving refresh rate while maintaining reflective imaging characteristics
Solution Approach 2:
The display device operates using periodic phases where first pixel units display first frames during first phases and second pixel units display second frames during second phases. This periodic alternating operation enables the system to achieve higher refresh rates by continuously updating different regions in a cyclic manner
2Productivity
If conventional single pixel unit structure is used, then device complexity is low, but refresh rate is suboptimal due to sequential frame updating
Solution Approach 1:
Each pixel unit is segmented into first and second pixel electrodes with corresponding common electrodes, creating independent display regions that can be updated simultaneously. This structural segmentation enables parallel frame rendering and display, doubling the effective refresh rate
Solution Approach 2:
The first pixel units prepare and display first frames during first phases while second pixel units simultaneously prepare second frames during second phases. This preliminary action in parallel phases ensures that frame data is ready in advance for continuous display without waiting for sequential updates
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed design significantly improves the refresh rate of E-Ink display panels, effectively mitigating the 'stuck' feeling and enhancing user interaction responsiveness.
Implementation Method 1
an e-ink display panel displays an image by means of electrophoretic movement of charged particles of different colors in the e-ink in an electric field formed between the upper and lower substrates
Data Source
AI summary
A display module and a display device. The display module includes pixel units, wherein each pixel unit includes a pixel electrode, a common electrode, and a microcapsule structure; drive transistors, where each drive transistor includes a control end, a first end, and a second end; scan lines, where each scan line is electrically connected to the control end of a corresponding drive transistor; and data lines, where each data line is electrically connected to the first end of a corresponding drive transistor. Each pixel unit includes a first pixel unit and a second pixel unit. Within each display cycle: in a first phase, the first pixel unit receives the data signal corresponding to a frame pushed by a corresponding data line; in a second phase, the second pixel unit receives the data signal corresponding to a next frame pushed by a corresponding data line.