Leather-textured light-emitting display device
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Solution Overview
Problem
Existing light-emitting display devices with a leather-like appearance struggle to conceal internal structures while providing high visibility and contrast for characters, diagrams, and patterns through light emission.
Innovation Solution
A leather-like light-emitting display device is designed with a laminate structure of a colored resin layer and a fiber substrate, incorporating a light-blocking portion to limit light transmission and a surface-emitting light source with adjustable luminance, ensuring a luminance ratio of 2.0 or more between light-emitting and non-light emitting regions for enhanced visibility and contrast.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a light-transmissive artificial leather sheet is used to achieve a leather-like appearance, then the aesthetic quality is improved, but the concealing performance for internal structures deteriorates
Solution Approach 1:
The patent applies local quality by creating different optical properties in different regions of the display device. The light-blocking portion has high light absorption properties to conceal internal structures, while the light-emitting region maintains light transmission for visibility. This spatial differentiation of optical characteristics resolves the contradiction between aesthetic appearance and concealing performance.
Solution Approach 2:
The display device is segmented into distinct functional regions: a light-blocking portion that conceals internal structures and a light-emitting region that displays information. This segmentation allows each region to optimize its specific function, with the light-blocking portion using materials having high light absorption properties to prevent visibility of internal components.
2Illumination intensity
If the colored resin layer has high light transmittance to improve visibility of displayed content, then the light-emitting display performance is improved, but the concealing performance for internal structures deteriorates
Solution Approach 1:
The patent implements local quality by assigning different optical transmission characteristics to different functional zones. The light-blocking portion uses materials with high light absorption properties to conceal internal structures, while the light-emitting region employs the colored resin layer with controlled light transmittance to ensure visibility of displayed content. This spatial differentiation resolves the contradiction between these competing requirements.
3Object-affected harmful factors
If a light-blocking portion is added to improve concealing performance, then the visibility of internal structures is improved, but the device complexity increases
Solution Approach 1:
The patent merges the light-blocking function with existing structural components of the display device. The light-blocking portion is integrated into the layered structure along with the colored resin layer, fiber substrate, and light-emitting device, combining multiple functions within a unified structure. This integration approach improves concealing performance while minimizing the increase in device complexity.
4Illumination intensity
If the luminance of the light-emitting region is increased to improve visibility, then the display visibility is improved, but the contrast ratio may be affected
Solution Approach 1:
The patent applies parameter changes by optimizing the luminance values within specific ranges: the non-light emitting region is controlled at 200 cd/m2 or less, while the light-emitting region is maintained at 100 to 2000 cd/m2 with a contrast ratio of 2.0 or more. This quantitative parameter optimization ensures both high visibility and adequate contrast ratio for effective information display.
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 a leather-like appearance with high concealing performance, making internal structures less visible and enabling clear display of characters, diagrams, and patterns with excellent visibility and high contrast when illuminated.
Implementation Method 1
a light-blocking portion configured to partially limit transmission of light, and interposed between any layers from the colored resin layer to the light-emitting portion
Implementation Method 2
a light-emitting portion disposed below the leather-like sheet
Data Source
AI summary
A leather-like light-emitting display device can include a leather-like sheet that is a laminate of a colored resin layer forming an outer surface layer, and a fiber substrate; a light-emitting portion disposed below the leather-like sheet; and a light-blocking portion configured to partially limit transmission of light, and interposed between any layers from the colored resin layer to the light-emitting portion. The leather-like light-emitting display device is configured to exhibit light-emitting display with a luminance Ya of 200 cd/m2 or less in a non-light emitting region corresponding to the light-blocking portion and a luminance Yb of 100 to 2,000 cd/m2 in a light-emitting region corresponding to a portion other than the light-blocking portion, both as measured from a surface of the colored resin layer, and Yb/Ya being 2.0 or more.