Display Panel Optical Film and Sidewall Reflection for Light Efficiency
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Solution Overview
Problem
The increase in fineness and intensity of light emitting units in display panels requires protective or positioning structures that can compromise light emitting efficiency and quality, necessitating a solution that enhances protection while maintaining or improving light emission performance.
Innovation Solution
A display panel design incorporating a substrate, light emitting units, an angle-selective optical film, and a protective layer, where the optical film adjusts reflectance and transmittance based on incident angle to optimize light emission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If protective or positioning structures are added to protect and maintain the light emitting units, then the protection or positioning of light emitting units is improved, but the light emitting efficiency and light emitting quality are reduced or deteriorated
Solution Approach 1:
The patent changes the optical parameters of the protective layer by introducing an angle-selective optical film that modifies the reflectance and transmittance characteristics based on incident angle. This allows the protective structure to maintain its protective function while improving light extraction efficiency at specific angles, thereby resolving the contradiction between protection and light emitting efficiency
Solution Approach 2:
The patent introduces dynamic angle-selective optical properties to the protective layer, where the reflectance and transmittance vary dynamically with the incident angle of light. This dynamic optical behavior allows the protective structure to adaptively manage light extraction, improving efficiency without compromising protection
2Reliability
If protective or positioning structures are added to protect and maintain the light emitting units, then the protection or positioning of light emitting units is improved, but the light emitting quality is reduced or deteriorated
Solution Approach 1:
The patent modifies the optical parameters of the protective layer by introducing an angle-selective optical film that controls reflectance and transmittance based on incident angle. This selective optical parameter adjustment enhances light emitting quality by directing light at optimal angles while maintaining protective coverage
Solution Approach 2:
The patent applies local quality enhancement by making different regions of the protective layer have different optical characteristics. The angle-selective optical film creates localized optical effects that improve light emitting quality in specific directions while maintaining overall protection
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 design improves light emitting efficiency by reducing light loss and enhancing the amount of light emitted to the outside, while ensuring protection and positioning of the light emitting units.
Implementation Method 1
the ratio of the display light reflected by the angle-selective optical film varies at least partially based on the change of the incident angle
Implementation Method 2
The bottom, the side wall, or a combination thereof has an optical structure configured to at least partially reflect the display light reflected from the angle-selective optical film
Data Source
AI summary
The present invention provides a display panel including: a substrate; a light emitting unit disposed on the substrate and having a top away from the substrate, a bottom opposite to the top, and a side wall connecting the top and the bottom; an angle-selective optical film disposed on the top of the light emitting unit; and a protective layer covering the light emitting unit and the angle-selective optical film. With respect to a normal line vertical to the substrate, display light emitted to the angle-selective optical film by the light emitting unit has an incident angle, and the ratio of the display light reflected by the angle-selective optical film varies at least partially based on the change of the incident angle. The bottom, the side wall, or a combination thereof has an optical structure configured to at least partially reflect the display light reflected from the angle-selective optical film.