Front Light Plate Microstructure Refraction Brightness
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Solution Overview
Problem
Conventional front light plates in display devices have limited light refracting efficiency, resulting in a small brightness difference between bright and dark states, which hampers the optical performance of the display device.
Innovation Solution
A front light plate with a first microstructure and a second microstructure, where the first microstructure extends from one surface to the opposite surface and has a conic constant in the range of −0.95 to 10, and the second microstructure is adjacent to the first microstructure, both configured to refract light to a display panel, enhancing light scattering and refraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional front light plate is used, then the structure is simple, but the light refracting efficiency is limited resulting in small brightness difference between bright and dark states
Solution Approach 1:
The front light plate is segmented into multiple types of microstructures (first microstructures with conic constants between -0.5 to 0, second microstructures with conic constants greater than 0, and third microstructures). This segmentation allows different regions to contribute differently to light refraction, enhancing overall light scattering efficiency and brightness difference while maintaining manageable structural complexity through systematic classification.
Solution Approach 2:
Different microstructure types are distributed at different locations within the front light plate. The first microstructures, second microstructures, and third microstructures have distinct optical properties (different conic constants) that are strategically placed to optimize local light refraction and scattering effects, thereby improving overall illumination intensity and brightness contrast.
2Illumination intensity
If the front light plate refracts more light to improve brightness difference, then the optical performance improves, but the manufacturing precision requirements increase
Solution Approach 1:
The patent utilizes conic constant as a key parameter to characterize and differentiate microstructure types. By controlling the conic constant within specific ranges (first microstructures: -0.5 to 0, second microstructures: greater than 0), the patent achieves optimized light refraction efficiency. This parameter-based classification provides clear manufacturing targets and simplifies quality control, balancing optical performance improvement with manufacturing feasibility.
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 design improves the brightness difference and contrast ratio between bright and dark states, thereby enhancing the displaying effect of the display device by refracting more light to the display panel.
Implementation Method 1
The front light plate is configured to receive the light. The front light plate includes a first microstructure and a second microstructure... configured to refract light to a display panel
Data Source
AI summary
A display device includes a light source and a front light plate. The light source is configured to emit light. The front light plate faces toward the light source. The front light plate is configured to receive the light. The front light plate includes a first microstructure and a second microstructure. The first microstructure is located on a first surface of the front light plate. The first microstructure has a first width. A conic constant of the first microstructure is in a range from −0.95 to 10. The second microstructure is adjacent to the first microstructure. The second microstructure has a second width. The first width of the first microstructure is greater than the second width of the second microstructure.