Micro-Optical Display Structure for Uniform Viewing Angles
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Solution Overview
Problem
Existing micro-LED display screens struggle to present a clear image at specific light-emitting angles due to their wide light-emitting angle range, which cannot be satisfied by the existing micro-LED chips.
Innovation Solution
A display device comprising a drive substrate with a light-emitting device array, a micro-optical structure to refract light to a uniform angle, and a color conversion layer array to convert light into desired colors, ensuring imaging at specific angles while avoiding color differences caused by different refraction angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a micro-LED chip with wide light-emitting angle range is used, then the light emission coverage is improved, but the image clarity at specific light-emitting angles deteriorates
Solution Approach 1:
The patent divides the light emission control into different segments: the micro-LED array provides wide-angle coverage while the microlens array segments and directs light into specific viewing zones. This segmentation allows different parts of the system to optimize for different functions - broad coverage versus focused clarity.
Solution Approach 2:
The microlens array acts as an intermediary component between the micro-LED light source and the viewer. It mediates the wide-angle light emission by refracting and directing it into controlled viewing zones, thus preserving image clarity while maintaining wide coverage capability.
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 display device achieves clear imaging at specific angles and improves brightness by refracting light to a targeted range, using the same color as the light source and converting it to desired colors, thus avoiding color differences.
Implementation Method 1
a micro-optical structure, disposed above the light-emitting device array and configured to refract the light emitted by the multiple light-emitting devices to a uniform refraction angle
Implementation Method 2
a color conversion layer array, disposed above the micro-optical structure; the color conversion layer array including: multiple color conversion layers, and the multiple color conversion layers being disposed corresponding to the multiple light-emitting devices, respectively
Data Source
AI summary
A display device and a display are provided. The display device includes: a drive substrate including a drive circuit, a light-emitting device array, a micro-optical structure, and a color conversion layer array. The light-emitting device array is disposed on a surface of the drive substrate and includes multiple light-emitting devices electrically connected to the drive circuit, and light emitted by the multiple light-emitting devices is light with a same color. The micro-optical structure is disposed above the light-emitting device array and used to refract the light emitted by the light-emitting device array to a uniform refraction angle. The color conversion layer array is disposed above the micro-optical structure, the multiple light-emitting devices respectively correspond to multiple color conversion layers in the color conversion layer array, and the color conversion layer array is used to convert the light emitted by the multiple light-emitting devices into light with a required color.