Display Switching Device Lens Array Pixel Transmittance
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Solution Overview
Problem
The existing backlight display devices face issues where disturbance light around the device causes non-displayed patterns to be visually recognized, reducing display selectivity due to the reflection of light by pixel regions.
Innovation Solution
A display switching device is designed with a lens array and a display part comprising pixel regions and surrounding regions, where the transmittance in each pixel region is set corresponding to a predetermined pattern, and the total area of pixel regions is 60% or less of the total area of both pixel and surrounding regions, reducing location dependency of color or reflectance from disturbance light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the total area of pixel regions is increased to improve display brightness and visibility, then the display brightness is improved, but the display selectivity is reduced due to increased reflectance of disturbance light
Solution Approach 1:
The patent applies local quality by differentiating the optical properties of pixel regions from surrounding regions. Specifically, pixel regions are designed with variable transmittance corresponding to display patterns, while surrounding regions maintain constant transmittance. This local differentiation allows the pixel regions to provide necessary brightness while the surrounding regions control overall reflectance, resolving the contradiction between brightness and selectivity.
Solution Approach 2:
The patent utilizes parameter changes by controlling the transmittance parameter of different regions. The pixel regions have transmittance values that vary according to the display pattern requirements, while surrounding regions maintain constant transmittance. This parameter control enables optimization of both brightness (through pixel region transmittance) and display selectivity (through surrounding region transmittance), preventing the faint visibility of non-displayed patterns.
2Adaptability or versatility
If the transmittance in pixel regions is varied to display different patterns, then the display capability is improved, but the reflectance variation causes non-displayed patterns to be faintly seen
Solution Approach 1:
The patent applies segmentation by dividing the display part into pixel regions and surrounding regions. This segmentation allows independent control of optical properties: pixel regions vary transmittance to display different patterns while surrounding regions maintain constant transmittance to provide a uniform background. This spatial segmentation prevents the harmful effect of reflectance variation from propagating across the entire display, thereby eliminating faint visibility of non-displayed patterns while preserving display capability.
3Use of energy by moving object
If the area ratio of pixel regions to total area is increased to improve light transmission, then the light transmission is improved, but the location dependency of reflectance from disturbance light increases
Solution Approach 1:
The patent applies local quality by assigning different functional roles to pixel regions and surrounding regions. Pixel regions are optimized for light transmission with transmittance varying according to display patterns, while surrounding regions are optimized for reflectance control with constant transmittance. This local quality differentiation ensures that even when pixel regions occupy significant area, the surrounding regions provide stable reflectance characteristics, minimizing location dependency of overall reflectance from disturbance light.
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
This configuration effectively prevents the faint visibility of stationary patterns due to disturbance light, enhancing display selectivity by minimizing the variation in reflectance and ensuring that only intended patterns are displayed.
Implementation Method 1
a region through which a light, which is formed by condensing each of the lights emitted from the plurality of light source positions with each of the lenses of the lens array, passes
Implementation Method 2
A transmittance in each of the pixel regions is set corresponding to a predetermined stationary pattern, and a total area of the pixel regions in the display part is 60% or less of a total area of a sum of the pixel regions and the pixel surrounding regions
Data Source
AI summary
A display switching device (10) is provided, which switches a display image (P) by switching irradiation of lights from positions of a plurality of light sources (7). The display switching device includes: a lens array (6) in which a plurality of lenses are arranged; and a display part (45) including a plurality of pixel regions (45a) arranged to include a region through which a light, which is formed by condensing each of the lights emitted from the positions of the plurality of light sources (7) with each of the lenses of the lens array (6), passes. A transmittance in each of the pixel regions (45a) is set corresponding to a predetermined stationary pattern. A total area of the pixel regions (45a) in the display part (45) is 60% or less of a total area of a sum of the pixel regions (45a) and the pixel surrounding regions (45b).