Display Panel Non-Display Area Electrode Segmentation
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Solution Overview
Problem
The spatial separation of reflective and transparent display areas in traditional electronic paper devices compromises transparency, color saturation, and contrast, as achieving high transparency requires reducing the display area and always results in a noticeable impact on the reflective display effect.
Innovation Solution
A display panel design featuring a first and second substrate with electrodes and charged particles, along with additional third electrodes in a non-display area, allows for independent control of bias voltages to accumulate charged particles in either the display or non-display areas, enabling switching between different working states and achieving transparency without sacrificing display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transparent area is designed directly outside the display area to achieve transparent display function, then transparency is improved, but the display area is reduced and the reflective display effect is affected
Solution Approach 1:
The display panel is divided into display area and non-display area, with separate electrode systems (first/second electrodes in display area, third electrodes in non-display area) that can be independently controlled to achieve different working states in different regions
Solution Approach 2:
The display panel can dynamically switch between different working states (reflective display state and transparent state) by controlling the bias voltages of different electrode groups, allowing the same physical area to serve different functions at different times
2Illumination intensity
If a transparent area is designed directly outside the display area to achieve transparent display function, then transparency is improved, but the color saturation, brightness, and contrast are reduced
Solution Approach 1:
Separate electrode systems allow independent control of display and transparent functions, enabling the transparent state to be achieved without compromising the display quality parameters in the display area
Solution Approach 2:
Different regions of the display panel have different local functions - the display area maintains high color saturation, brightness, and contrast for reflective display, while the non-display area provides transparency when activated, with each region optimized for its specific purpose
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
This design enhances transparency while maintaining display quality by allowing the charged particles to be directed towards the non-display area, thereby improving color saturation, brightness, and contrast, and enabling seamless switching between reflective and transparent states.
Implementation Method 1
a plurality of charged particles disposed between the first electrode and the second electrode... By respectively controlling different bias voltages of the first electrode and second electrode in the display area and the third electrode in the non-display area, the plurality of charged particles can be accumulated to the electrodes
Data Source
AI summary
A display panel and a display device, including a display area and a non-display area are disclosed. The display panel includes: a first substrate and a second substrate disposed opposite to each other, a first electrode and a second electrode, a plurality of charged particles, and a plurality of third electrodes. By respectively controlling different bias voltages of the electrodes in the display area and the third electrode in the non-display area, the present application can realize a capability of switching between different working states of the display panel.