Liquid Crystal Display Light-Shielding Zone with Electrically Controlled Material
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Solution Overview
Problem
Existing liquid crystal display apparatuses suffer from light leakage issues in the light-shielding zone due to insufficient light-shielding efficacy, particularly caused by backlight leakage, which current solutions like using a color filter layer or metal layer as a light-shielding layer either fail to address effectively or lead to component damage from electrostatic discharge.
Innovation Solution
Incorporating an electrically controlled material with a controllable light shielding rate in the light-shielding zone, along with a control circuit to adjust the light shielding based on control signals, to enhance light-shielding efficacy while preventing electrostatic discharge-related issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a color filter layer is used as a light-shielding layer, then the light-shielding zone can be formed, but light leakage occurs when the absorbance or optical density is insufficient
Solution Approach 1:
The patent combines the color filter layer with an additional light-shielding layer to create a composite structure in the light-shielding zone. This composite approach maintains ease of manufacture while significantly improving light-shielding efficacy to prevent backlight leakage.
Solution Approach 2:
The patent introduces a controllable light shielding rate parameter through electrically controlled material, allowing dynamic adjustment of the light-shielding performance. This enables the system to adapt to different lighting conditions and display requirements while preventing light leakage.
2Object-affected harmful factors
If a metal layer is used as a light-shielding layer, then light leakage is prevented, but electrostatic discharge causes component damage
Solution Approach 1:
The patent introduces an electrically controlled material as an intermediary between the light-shielding function and the electrostatic discharge risk. This material provides effective light-shielding while controlling electrical properties to prevent electrostatic discharge and protect components.
Solution Approach 2:
The patent uses electrically controlled material that can dynamically adjust its light-shielding properties based on electrical signals. This dynamic control allows the system to achieve effective light-shielding without the fixed electrostatic issues of metal layers, improving component reliability.
3Object-affected harmful factors
If a metal layer is used as light-shielding layer, then light-shielding efficacy is improved, but resistance/capacity loads increase and image signal transmission is delayed
Solution Approach 1:
The patent replaces the metal layer's fixed light-shielding mechanism with an electrically controlled material that uses electrical field control rather than physical metal obstruction. This substitution maintains light-shielding efficacy while reducing electrical load and improving signal transmission speed.
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 solution effectively minimizes light leakage by dynamically controlling the light shielding rate, improving the light-shielding performance of the light-shielding zone and reducing power consumption, while avoiding component damage from electrostatic discharge.
Implementation Method 1
The light-shielding zone includes an electrically controlled material having a controllable light shielding rate
Data Source
AI summary
In a display apparatus having a display zone and a light-shielding zone, the light-shielding zone includes an electrically controlled material having a controllable light shielding rate and being controlled to change its light shielding rate in accordance with a control signal.