Microlens Structure for Display Pixel Diffraction Reduction
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Solution Overview
Problem
Traditional display structures experience image distortion due to diffraction caused by light passing through the edges of non-light-transparent regions, which is not effectively mitigated by existing configurations.
Innovation Solution
Incorporating a microlens structure on a second substrate positioned above the pixel array, where the vertical distance between the microlens surface and non-light-transparent regions is less than twice the focal length, ensuring light passes directly through light-transparent regions without traversing the edges of non-light-transparent regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If light passes through the pixel array without optical component, then the structure is simple, but diffraction occurs causing image distortion
Solution Approach 1:
An optical component with microlens array is introduced as an intermediary element between the light source and the pixel array. Each microlens corresponds to a pixel and focuses light onto the light-transparent region, preventing diffraction at the edges of non-light-transparent regions. This mediator resolves the contradiction by adding a controlled optical element that eliminates harmful diffraction effects.
2Object-affected harmful factors
If the vertical distance between microlens surface and non-light-transparent regions is less than twice the focal length, then diffraction is reduced, but the device complexity increases
Solution Approach 1:
The vertical distance between the microlens surface and the non-light-transparent regions is controlled to be less than twice the focal length of the microlenses. This parameter optimization ensures that light is focused onto the light-transparent regions without passing through the edges of non-light-transparent regions, thereby reducing diffraction. The specific parameter range provides a practical solution that balances optical performance with device complexity.
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 significantly reduces diffraction, improving image clarity by focusing light on light-transparent regions and preventing it from passing through non-light-transparent regions, thereby enhancing display quality.
Implementation Method 1
light passes directly through the plurality of light-transparent regions without passing through the edge of the plurality of non-light-transparent regions after light passes through the microlens structure
Implementation Method 2
The vertical distance between the surface of the optical component and each of the non-light-transparent regions is less than twice as long as the focal length of each of the microlenses of the microlens array
Data Source
AI summary
A display structure is provided. The display structure includes a first substrate, a pixel array, a second substrate and an optical component. The pixel array is disposed on the first substrate. Each of pixels of the pixel array includes a light-transparent region and a non-light-transparent region. The second substrate is disposed on the pixel array. The optical component has a microlens structure. After the light passes through the microlens structure, the light passes directly through the plurality of the light-transparent regions without passing through the edge of the plurality of the non-light-transparent regions.