Microlens Array for Matte Display Effect
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Solution Overview
Problem
Digital displays, especially in outdoor or high-ambient-light conditions, suffer from glare and reduced visibility due to the reflection of ambient light, which compromises image contrast and resolution, with existing anti-glare solutions either failing to adequately address glare or sacrificing image quality.
Innovation Solution
A thin, transparent micro-lens array is integrated or applied over the display, featuring convex or concave micro lenses that scatter ambient light without blurring the displayed image, maintaining image brightness and resolution by acting as a perfect matte surface for ambient light while remaining transparent for the displayed image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a traditional anti-glare coating is applied to the display, then glare from ambient light is reduced, but the display resolution and image sharpness deteriorate
Solution Approach 1:
The anti-glare function is segmented from the display surface and implemented through a separate micro-lens array structure. This array consists of multiple individual microlenses, each corresponding to a display pixel, allowing independent optimization of anti-glare performance without compromising the underlying display resolution.
Solution Approach 2:
A micro-lens array is introduced as an intermediary optical element between the ambient light and the display surface. This intermediary structure selectively scatters ambient light to reduce glare while maintaining the transmission of display image light, thereby resolving the contradiction between anti-glare performance and image quality.
2Object-affected harmful factors
If a matte surface is used to scatter ambient light, then glare is reduced, but the displayed image becomes blurred
Solution Approach 1:
The micro-lens array provides locally differentiated optical treatment: each microlens scatter ambient light incident on its region while simultaneously focusing or transmitting the light from the corresponding display pixel. This local quality differentiation allows anti-glare function without image blurring, as each location processes light differently based on its source.
Solution Approach 2:
The optical parameters of the micro-lens array (such as lens curvature, focal length, and aperture size) are specifically designed to create different optical paths for ambient light versus display light. Ambient light is scattered through controlled reflection and refraction, while display light maintains its directional integrity, preserving image sharpness.
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
Significantly improves display contrast in strong ambient light conditions without blurring the image, effectively reducing glare while preserving the sharpness and clarity of the displayed content.
Implementation Method 1
a first array of microlenses that is configured to scatter ambient light
Data Source
AI summary
A method and an apparatus for providing a matte affect while enhancing an output of a display that comprises multiple display pixels, the apparatus may include a first array of microlenses that is configured to scatter ambient light; a second array of microlenses; wherein first array of microlenses is parallel to the second array of microlenses; wherein microlenses of the first array of microlenses and the microlenses of the second array have a dimension of tens of microns; and wherein the first array of microlenses and the second array of microlenses are shaped and positioned to pass through the image from the display, when the apparatus is attached to the display.