Dual Sub-Display Panel Driving Circuit for Brightness Adjustment
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Solution Overview
Problem
Existing liquid crystal display (LCD) panels with double-layered screens for multi-dimensional brightness adjustment require four layers of polarizers, leading to increased loss in alignment accuracy and brightness.
Innovation Solution
A display panel comprising a first and second sub-display panel with a driving circuit layer that simultaneously drives both panels to emit or transmit light, allowing for multi-dimensional brightness adjustment through the superposition of electric fields formed by pixel and common electrode layers, thereby reducing the need for multiple polarizers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If double-layered display screens are used for multi-dimensional brightness adjustment, then brightness adjustment capability is improved, but alignment accuracy and brightness are reduced due to requiring four layers of polarizers
Solution Approach 1:
The patent merges the driving functions for two sub-display panels into a single driving circuit layer. The driving circuit layer contains pixel electrodes that simultaneously drive both the first sub-display panel (with liquid crystal layer) and the second sub-display panel (with electrophoretic layer), eliminating the need for separate driving circuits and reducing the number of polarizer layers required
Solution Approach 2:
The driving circuit layer serves multiple functions: it acts as the pixel electrode for the first liquid crystal display panel, provides driving signals to the second electrophoretic display panel through transparent electrode layers, and enables multi-dimensional brightness adjustment through coordinated control of both panels using the same driving circuit structure
2Adaptability or versatility
If double-layered display screens are used for multi-dimensional brightness adjustment, then brightness adjustment capability is improved, but overall brightness is reduced due to requiring four layers of polarizers
Solution Approach 1:
The patent merges the driving functions for two sub-display panels into a single driving circuit layer. The driving circuit layer contains pixel electrodes that simultaneously drive both the first sub-display panel (with liquid crystal layer) and the second sub-display panel (with electrophoretic layer), eliminating the need for separate polarizer layers and reducing light loss
Solution Approach 2:
The patent introduces transparent electrode layers (such as ITO or IZO) as intermediaries between the driving circuit layer and the second electrophoretic display panel. These transparent electrodes allow light to pass through while still providing the necessary electrical connection, thereby maintaining brightness while enabling dual-panel control
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 configuration enhances the display effect by achieving higher-dimensional brightness adjustment while minimizing losses in alignment accuracy and brightness, improving the overall display performance.
Implementation Method 1
the first pixel electrode layer and the first common electrode layer form a first electric field; wherein the second pixel electrode layer and the second common electrode layer form a second electric field
Data Source
AI summary
The present application proposes a display panel and a display device. The display panel includes a first sub-display panel and a second sub-display panel disposed on one side of the first sub-display panel. The first sub-display panel includes a first substrate and a driving circuit layer disposed on the first substrate, and the driving circuit layer allows the first sub-display panel or/and the second sub-display panel to transmit light.