Light Guide Layout for Thin Display Light Distribution
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Solution Overview
Problem
Existing display devices face challenges in efficiently guiding and distributing light from light sources to the display panel without causing degradation in light quality or increasing device weight.
Innovation Solution
A display device configuration featuring a light guide with specific height relationships and reflective members to optimize light transmission and minimize interference with internal components, allowing for efficient light distribution and reduced weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a light guide is used to distribute light from light sources to the display panel, then light distribution efficiency is improved, but the height of the light guide increases device weight
Solution Approach 1:
The patent changes the height parameter of the light guide to be less than the thickness of the display panel, thereby reducing the overall device height and weight while maintaining effective light distribution functionality
2Weight of stationary object
If the light guide height is reduced to minimize device weight, then device weight is reduced, but light-entering efficiency may be compromised
Solution Approach 1:
The patent optimizes the light guide height parameter to be less than the display panel thickness, finding the optimal balance point where sufficient light-entering efficiency is maintained while minimizing device weight
Solution Approach 2:
The light guide is designed with selective light reflection properties, reflecting only the necessary portion of light toward the display panel while allowing other light to pass through, achieving adequate light distribution without requiring excessive light guide height
3Productivity
If reflective members are added to improve light distribution, then light-entering efficiency is enhanced, but device complexity increases
Solution Approach 1:
The patent introduces reflective members as intermediary elements between the light guide and display panel to enhance light distribution efficiency, using these intermediate components to redirect light paths without requiring fundamental redesign of the entire system
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 enhances light-entering efficiency and suppresses degradation of display quality, maintaining brightness and uniformity across the display area while reducing the device's overall weight.
Implementation Method 1
a first light guide overlapping the first main surface and located between the first and second end portions and the first light-emitting element
Implementation Method 2
A display device configuration featuring a light guide with specific height relationships and reflective members to optimize light transmission
Data Source
AI summary
According to one embodiment, a display device includes a first transparent substrate including a first main surface, a second transparent substrate including a first end portion, a liquid crystal layer containing strip-shaped polymers and liquid crystal molecules, a third transparent substrate including a second end portion and a second main surface, a first light-emitting element and a first light guide. The first light guide includes a first surface and a second surface. A height from the first main surface to the second surface is less than a height from the first main surface to the second main surface.