Dual Pixel Electrode Array Substrate for Temperature-Stable E-Paper
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Solution Overview
Problem
Existing electronic paper display apparatuses face challenges in maintaining image clarity by preventing grid phenomena in low temperature environments while avoiding image blurring in high temperature environments due to the sensitivity of charged particles to temperature variations.
Innovation Solution
The array substrate design includes separate control of first and second pixel electrodes through transistors, allowing for adjustable electric field sizes by independently controlling the transistors based on temperature, with pixel electrodes arranged to avoid overlap and ensure insulation, thereby optimizing electric field area in each sub-pixel region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electric field area is made large to prevent grid formation in low temperature environments, then image clarity is improved, but image blurring occurs in high temperature environments
Solution Approach 1:
The patent implements dynamic adjustment of the electric field area by controlling the transistors based on temperature conditions. In low temperature environments, the transistor is controlled to maintain a large electric field area to prevent grid formation. In high temperature environments, the transistor is controlled to maintain a small electric field area to prevent image blurring. This dynamic adaptation resolves the contradiction between image clarity and image blurring under different temperature conditions.
2Reliability
If the electric field area is made small to avoid image blurring in high temperature environments, then image quality is improved, but grid formation occurs in low temperature environments
Solution Approach 1:
The patent uses dynamic control of the transistor based on temperature to adjust the electric field area. In high temperature environments, the transistor is controlled to maintain a small electric field area to avoid image blurring. In low temperature environments, the transistor is controlled to maintain a large electric field area to prevent grid formation. This dynamic adjustment mechanism resolves the contradiction between image quality and grid formation under different temperature conditions.
3Manufacturing precision
If pixel electrodes are arranged to avoid overlap and ensure insulation, then manufacturing precision is improved, but electric field area is reduced
Solution Approach 1:
The patent divides the pixel electrode into two separate electrodes (first pixel electrode and second pixel electrode) that are insulated from each other. Each electrode can be independently controlled by its own transistor, allowing precise control of the electric field area while maintaining insulation between electrodes. This segmentation approach resolves the contradiction between manufacturing precision and electric field area.
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 effectively ameliorates image blurring in high temperatures by maintaining a small electric field area and prevents grid formation in low temperatures by ensuring a large electric field area, enhancing display quality across varying temperature conditions.
Implementation Method 1
the first pixel electrode and the second pixel electrode are disposed in a same layer. An orthographic projection of the first pixel electrode on the substrate and an orthographic projection of the second pixel electrode on the substrate do not overlap, and have a gap therebetween
Implementation Method 2
the first pixel electrode is electrically connected to the first transistor, and the second pixel electrode is electrically connected to the second transistor
Data Source
AI summary
An array substrate has a plurality of sub-pixel regions. The array substrate includes: a substrate; a first transistor and a second transistor that are disposed on a side of the substrate and located in each sub-pixel region; and a first pixel electrode and a second pixel electrode that are disposed on the side of the substrate and located in the sub-pixel region. The first pixel electrode and the second pixel electrode are insulated from each other; the first pixel electrode is electrically connected to the first transistor, and the second pixel electrode is electrically connected to the second transistor.