Liquid Crystal Display Panel View Angle Control Layer
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Solution Overview
Problem
Liquid crystal displays face a challenge in balancing wide view angles with privacy concerns, as existing technologies do not effectively allow for adjustable view angles to meet operational requirements.
Innovation Solution
Incorporating a view angle control layer between polarizers in a liquid crystal display panel, which utilizes an electrode layer and electric birefringence material, allowing refractivity to vary with an applied electric field, thereby controlling phase differences and view angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the view angle of the liquid crystal display is widened, then the functionality and accessibility of the display is improved, but the privacy protection capability deteriorates
Solution Approach 1:
The patent applies the dynamics principle by introducing a controllable view angle control layer that can dynamically adjust its refractivity state. The liquid crystal display transitions from a static view angle to a dynamic one, allowing the system to adapt between wide view angle mode (for accessibility) and narrow view angle mode (for privacy protection) based on operational requirements. This is achieved through the view angle control layer comprising liquid crystal molecules that can reorient under electric field control.
Solution Approach 2:
The patent implements parameter changes by controlling the refractivity of the view angle control layer through applied electric fields. By changing the voltage parameter applied to the liquid crystal molecules in the view angle control layer, the refractivity index changes, which directly controls the viewing angle. This allows dynamic adjustment between different viewing angle states without physical structural changes.
2Adaptability or versatility
If a view angle control layer is added to enable adjustable view angles, then the privacy protection and functionality are improved, but the device structure becomes more complex
Solution Approach 1:
The view angle control layer serves multiple functions simultaneously: it acts as an optical control element for view angle adjustment, functions as a privacy protection mechanism through narrow beam control, and operates as an energy-efficient display component using liquid crystal's inherent electro-optic properties. This multi-functionality reduces the need for separate components and justifies the added structural complexity.
Solution Approach 2:
The patent employs composite material structure by combining the view angle control layer with the existing liquid crystal display structure. The view angle control layer itself is a composite of liquid crystal molecules, alignment layers, and electrode structures integrated between the polarizers and liquid crystal cell. This composite approach allows the new functionality to be embedded within the existing display architecture rather than adding entirely separate systems.
Data Source
AI summary
The present invention provides a liquid crystal display panel and a liquid crystal display apparatus. The liquid crystal display panel comprises a first polarizer, a second polarizer and a liquid crystal cell provided between the first polarizer and the second polarizer, wherein the liquid crystal display panel further comprises a view angle control layer provided between the first polarizer and the second polarizer, the refractivity of the view angle control layer in a horizontal direction can vary with an electric field in the horizontal direction applied to the view angle control layer.