Transflective Liquid Crystal Panel Reflection Layer
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Solution Overview
Problem
The existing manufacturing process for transflective liquid crystal panels is complex due to the need for etching and metal plating in the reflection layer, leading to electrostatic charge accumulation and adverse effects on liquid crystal orientation, which reduces the display effect.
Innovation Solution
A transflective liquid crystal panel with a reflection layer composed of an electronic ink layer, including positively charged diffusion particles and negatively charged light absorption particles, covered by an insulating gelatin layer, which can be formed by printing, simplifying the process and reducing electrostatic charge accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional reflection layer with etched resin base and metal film is used, then the reflection layer has diffuse reflection capability, but the manufacturing process becomes complicated and electrostatic charges accumulate
Solution Approach 1:
The patent extracts the metal film from the reflection layer structure, retaining only the resin base with concavo-convex surface. This eliminates the metal film that causes electrostatic charge accumulation while preserving the diffuse reflection capability through the surface geometry alone.
Solution Approach 2:
The patent replaces the complex metal film plating process with a simpler resin-based solution. The resin base with concavo-convex surface provides the necessary reflection functionality without requiring expensive and complex metal plating operations.
2Reliability
If a conventional reflection layer with etched surface is used, then the reflection layer provides diffuse reflection, but liquid crystal orientation is adversely affected
Solution Approach 1:
The patent applies local quality by creating concavo-convex surface structures only in specific regions where reflection is needed, while maintaining flat surfaces in other areas. This localized surface modification provides diffuse reflection without adversely affecting liquid crystal orientation in the entire device.
Solution Approach 2:
The patent uses curved concavo-convex surface structures instead of sharp etched features. These gentle curvature variations provide diffuse reflection through surface geometry without creating the abrupt discontinuities that adversely affect liquid crystal molecule orientation.
3Reliability
If metal film is plated on the resin base surface, then reflection function is achieved, but electrostatic charges accumulate on the surface
Solution Approach 1:
The patent removes the metal film component from the reflection layer, eliminating the source of electrostatic charge accumulation. The reflection function is maintained through the concavo-convex surface geometry of the resin base alone, which does not generate electrostatic charges.
Solution Approach 2:
The patent replaces the metal film with a resin-based solution that does not accumulate electrostatic charges. This substitution eliminates the harmful electrostatic effect while maintaining the necessary reflection functionality through surface geometry.
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 solution simplifies the fabrication process, minimizes electrostatic charge accumulation, and improves the display effect by maintaining a flat surface that does not adversely affect liquid crystal orientation, enhancing the reflection region's performance.
Implementation Method 1
negatively charged light absorption particles
Implementation Method 2
positively charged diffusion particles
Implementation Method 3
insulating gelatin layer, which can be formed by printing, simplifying the process and reducing electrostatic charge accumulation
Implementation Method 4
a metal film 1b plated on the surface of the resin base 1a to reflect an ambient light
Data Source
AI summary
The embodiment of the present invention discloses a transflective liquid crystal panel, a method of manufacturing the transflective liquid crystal panel, a transflective display device, and a method of controlling displaying of the transflective display device to solve the technical problems that the process for fabricating the reflection layer is complicated, the metal film of the reflection layer will cause electrostatic charges to be accumulated, and the surface of the reflection layer has an uneven concavo-convex shape so that the orientation of the liquid crystal molecules in the reflection region is adversely affected. The transflective liquid crystal panel comprises pixel units arranged in a matrix, a transmission region and a reflection region disposed in each pixel unit, and a reflection layer disposed in the reflection region. The reflection layer includes an electronic ink layer.