Transparent Display Units with Segmented Light Guide Plates
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Solution Overview
Problem
Existing display devices provide only monochromatic displays due to uniform light projection, resulting in poor visual expressiveness.
Innovation Solution
A display device comprising multiple transparent display units with light emitting surfaces arranged perpendicular to each other, each outputting monochromatic grayscale images of different colors, allowing for superposition and changing visual effects based on the viewer's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple light sources project red, green, and blue lights through a light guide plate, then the display device can provide a variety of information, but the light projection becomes uniform and monochromatic, resulting in poor visual expressiveness
Solution Approach 1:
The patent divides the single light guide plate into multiple light guide plates, each responsible for guiding light of a specific color (red, green, blue). Each light guide plate has its light source positioned at a different location, allowing independent control of light projection for each color channel, thereby achieving non-uniform and expressive light distribution across the display surface
Solution Approach 2:
The patent positions light sources at different locations for different colors: the red light source is positioned at a first location, the green light source at a second location, and the blue light source at a third location. This local differentiation allows each color to be projected with specific intensity and distribution patterns, creating visually expressive and non-uniform light projection across the display surface
2Adaptability or versatility
If display surfaces are arranged spaced apart to enable viewpoint-dependent superposition, then richly expressive images with clear color tone changes are achieved, but the device complexity increases
Solution Approach 1:
The patent arranges multiple light guide plates in the thickness direction (perpendicular to the light emitting surfaces) with predetermined spacing. This spatial arrangement in the third dimension enables viewpoint-dependent optical superposition effects, where the relative positions of red, green, and blue light projections change based on the observer's viewing angle, creating rich color tone expressions without requiring complex control mechanisms
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 device achieves richly expressive images with clear color tone changes, enabling bright full-color visuals including white, and varying display effects depending on the viewer's perspective.
Implementation Method 1
light guide plates that direct light entering therein and cause a portion of the light to exit from the light emitting surface
Data Source
AI summary
A display device includes a plurality of transparent display units, each unit configured to include a light emitting surface; the display units arranged spaced apart by a predetermined distance in a direction perpendicular to the light emitting surfaces such that the light emitting surfaces are parallel to each other; and each light emitting surface outputs a monochromatic grayscale image of a mutually different color.