Viewing Angle Switching Panel Reinforcement for Plastic Substrate Reliability
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Solution Overview
Problem
Current electrically controlled viewing angle switching panels using glass substrates result in thicker and heavier display devices, while plastic substrates suffer from reliability issues under high temperature and humidity conditions, leading to deformation and structural integrity problems.
Innovation Solution
Incorporating a support structure, such as an optical film or support colloid, to reinforce the polarizers and viewing angle adjustment elements, using materials like PET or silicone rubber to suppress shrinkage and deformation under reliability tests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If glass substrates are used for the viewing angle switching panel, then structural strength and reliability are improved, but the thickness and weight of the display device increase
Solution Approach 1:
The patent changes the material parameter from glass to plastic substrate, fundamentally altering the physical properties to achieve both lightweight and thin design while maintaining functional performance through compensatory structural design
Solution Approach 2:
The patent creates a composite structure by combining plastic substrate with support columns and adhesive layers, forming a hybrid system that compensates for the lower inherent strength of plastic while maintaining the weight and thickness advantages
2Weight of stationary object
If plastic substrates are used for the viewing angle switching panel, then thickness and weight are reduced, but reliability under high temperature and humidity conditions deteriorates
Solution Approach 1:
The patent introduces support columns and adhesive layers as preventive structural elements that compensate for plastic substrate deformation before it occurs under high temperature and humidity conditions, ensuring reliability is maintained in advance
Solution Approach 2:
The patent applies support columns at specific locations (four corners and center) and uses different adhesive layers at different positions, creating localized reinforcement zones that address the specific deformation risks of plastic substrates under thermal stress
3Length of moving object
If plastic substrates are used for the viewing angle switching panel, then thickness is reduced, but structural integrity under thermal stress deteriorates
Solution Approach 1:
The patent uses thin plastic substrate films combined with flexible support columns and adhesive layers that can accommodate thermal expansion and contraction while maintaining overall structural integrity, allowing the thin structure to remain stable under thermal stress
Solution Approach 2:
The patent divides the support structure into discrete elements (support columns at specific positions, separate adhesive layers) that can independently manage local deformation, preventing cumulative stress from compromising overall structural integrity
Data Source
AI summary
An electronically controlled viewing angle switching panel and a display device are provided. The electronically controlled viewing angle switching panel includes a viewing angle adjustment element, a first polarizer, a second polarizer and a support structure. The viewing angle adjustment element includes at least one plastic substrate. The viewing angle adjustment element is located between the first polarizer and the second polarizer. The support structure is connected to at least a part of the second polarizer. The display device includes a light source module, a display panel and the electronically controlled viewing angle switching panel.