Multilayer Optical Display Structure for Clear Multi-Color Images
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Solution Overview
Problem
Conventional display devices with multi-layer structures face issues of blurring or reduced brightness in luminous images beyond three colors, limiting their ability to display a variety of colors and patterns due to interference between light-emitting layers.
Innovation Solution
A display device design featuring a substrate with stacked optical units, each containing light guide layers with reflective patterns covered by colored regions and patterned light-transmitting regions, separated by a light-blocking unit, allowing independent operation of light-emitting units to produce distinct luminous images without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a multi-layer structure with more than three layers is adopted to display luminous images of more than three different colors, then the display capability in terms of color quantity and type is improved, but the luminous image becomes blurred or its brightness is reduced due to light interference between layers
Solution Approach 1:
The patent divides the display device into multiple independent optical units, each responsible for a specific color range. Each optical unit contains its own light guide layer with reflective patterns and colored regions, preventing light interference between different color layers and maintaining image clarity while enabling display of multiple colors
Solution Approach 2:
The patent introduces light-blocking units as intermediaries between adjacent optical units. These light-blocking units prevent light from one optical unit from interfering with adjacent optical units, thereby eliminating the blurring effect and maintaining the brightness and clarity of luminous images when multiple layers are used
2Adaptability or versatility
If a multi-layer structure with more than three layers is adopted to display luminous images of more than three different colors, then the display capability in terms of color quantity and type is improved, but the brightness of the luminous image is reduced due to light interference between layers
Solution Approach 1:
The patent segments the light path into separate optical units, each with its own light guide layer and colored regions. This segmentation ensures that light from one optical unit does not interfere with other optical units, preserving the brightness of each luminous image while enabling multi-color display capability
Solution Approach 2:
Light-blocking units serve as intermediaries that block light from one optical unit from reaching adjacent optical units. This prevents light interference that would otherwise reduce brightness, allowing each layer to contribute its full brightness to the final display while maintaining the ability to show multiple colors
3Manufacturing precision
If the multi-layer structure is limited to no more than two layers to avoid blurring and brightness reduction, then the image clarity and brightness are maintained, but the quantity, types, and colors of luminous images that can be displayed are limited
Solution Approach 1:
The patent segments the display into multiple independent optical units, each capable of producing distinct luminous images. This segmentation allows the system to display more than three different colors and image types while maintaining clarity, overcoming the limitation of traditional two-layer or fewer structures
Solution Approach 2:
Light-blocking units act as intermediaries that enable the addition of more layers without causing light interference. By blocking light from one optical unit from affecting adjacent units, these intermediaries allow the system to expand its display capability to include more colors and image types while preserving image clarity
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
Enables clear presentation of multiple luminous images in different colors by preventing light interference between layers, enhancing the display capabilities beyond traditional limitations.
Implementation Method 1
a first light guide layer with at least one reflective pattern
Implementation Method 2
the first light guide layer has at least one reflective pattern
Implementation Method 3
the first coating layer has a light permeable colored region that covers the at least one reflective pattern
Data Source
AI summary
A display device is provided. The display device includes a substrate, a first optical unit, a first light-emitting unit, a second optical unit, a second light-emitting unit, and a light-blocking unit. The first optical unit is disposed on the substrate and includes a first coating layer and a first light guide layer. A light-emitting region of the first light-emitting unit corresponds in position to a first light incident surface of the first light guide layer. The second optical unit is disposed on the first optical unit and includes a second coating layer and a second light guide layer. A light-emitting region of the second light-emitting unit corresponds in position to a second light incident surface of the second light guide layer. The light-blocking unit separates the first light incident surface and the second light incident surface.