Transflective Display Panel Blue Phase Liquid Crystal Structure
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Solution Overview
Problem
Transflective liquid crystal display devices have complex structures and manufacturing processes due to their dual functionality in both transmission and reflection modes.
Innovation Solution
A transflective display panel is designed with a first and second substrate separated by blue phase liquid crystal, featuring pixel and common electrodes as reflecting electrodes, quarter wave plates, and polarizers, which eliminate the need for an alignment film and simplify the manufacturing process by reducing the strength of the transverse electric field in reflection regions compared to transmission regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional transflective liquid crystal display devices are designed to achieve both transmission and reflection modes, then display functionality is improved, but structure complexity and manufacturing process complexity increase
Solution Approach 1:
The patent merges the alignment film layer with the lower polarizer by directly forming the polarizer on the lower substrate without inserting an alignment film between them. This integration eliminates the need for separate alignment film deposition and rubbing processes while maintaining both transmission and reflection display modes, thus reducing structural complexity without sacrificing functionality
Solution Approach 2:
The lower polarizer is designed to serve dual functions: it acts as both the polarizing element for transmission mode and the alignment reference for reflection mode. This multi-functional design eliminates the need for separate alignment films and enables the display to operate in both transmission and reflection modes using a unified structure
2Adaptability or versatility
If traditional transflective liquid crystal display devices are designed to achieve both transmission and reflection modes, then display functionality is improved, but manufacturing process complexity increases
Solution Approach 1:
The manufacturing process merges the alignment film deposition step and the polarizer formation step into a single polarizer formation process. The lower polarizer is directly formed on the lower substrate using conventional polarizer formation techniques, eliminating the need for separate alignment film deposition and rubbing processes, thus simplifying the manufacturing process while maintaining dual-mode functionality
Solution Approach 2:
The patent extracts and eliminates the alignment film layer from the traditional transflective display structure. By removing this unnecessary component and its associated manufacturing steps (deposition, rubbing, inspection), the manufacturing process is significantly simplified while the display maintains both transmission and reflection modes
3Ease of manufacture
If alignment film is used in transflective display devices, then manufacturing process is established, but structure complexity and manufacturing complexity increase
Solution Approach 1:
The patent extracts and removes the alignment film layer from the display structure. The lower polarizer is directly formed on the lower substrate without inserting an alignment film between them, eliminating this unnecessary component and simplifying the overall structure while maintaining manufacturing feasibility through conventional polarizer formation techniques
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 reduces the complexity of the structure and manufacturing process while maintaining effective display functionality in both transmission and reflection modes, achieving consistent optical path differences without the need for an alignment film and enhancing optical efficiency.
Implementation Method 1
blue phase liquid crystal disposed between the first substrate and the second substrate
Implementation Method 2
a first quarter wave plate and a first polarizer may be disposed in order on a side of the first base substrate that is away from the second substrate, and a second quarter wave plate and a second polarizer may be disposed in order on a side of the second base substrate that is away from the first substrate
Implementation Method 3
The pixel electrodes serve as reflecting electrodes or both the pixel electrodes and the common electrodes serve as reflecting electrodes
Data Source
AI summary
A transflective display panel and a transflective display device. The transflective display panel includes: a first substrate and a second substrate disposed opposite to each other, and blue phase liquid crystal disposed between the first substrate and the second substrate. The first substrate includes a first base substrate and pixel electrodes and common electrodes that are disposed on a side of the first base substrate that faces the second substrate, the pixel electrodes serve as reflecting electrodes or both the pixel electrodes and the common electrodes serve as reflecting electrodes. The second substrate comprises a second base substrate.