Micro LED Display Optics for High-Luminance Color Uniformity
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Solution Overview
Problem
Display apparatuses for VR and AR require high-resolution and high-luminance displays, but micro LEDs of different colors often have varying luminance due to their materials, making it challenging to achieve uniform brightness and high display quality.
Innovation Solution
The use of multiple micro light-emitting diodes with different light-emitting materials, such as organic and inorganic compounds, in separate display apparatuses with optical elements like light guide plates and diffraction elements to synthesize light and enhance luminance and resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If micro LEDs of different colors are used to achieve high luminance display, then luminance is improved, but uniformity of luminance across different colors deteriorates
Solution Approach 1:
The invention divides the display into separate first and second display apparatuses, each dedicated to displaying images of a specific color (first color and second color respectively). This segmentation allows each display apparatus to use micro LEDs optimized for its specific color, achieving high luminance for each color while maintaining overall luminance uniformity across the full-color display.
2Adaptability or versatility
If micro LEDs of different colors with different materials are used, then color gamut is improved, but manufacturing complexity increases
Solution Approach 1:
The invention separates the display system into multiple independent display apparatuses, each handling a specific color range. This allows each apparatus to use micro LEDs made from materials optimized for its color range, achieving a wide color gamut while simplifying the manufacturing process for each individual apparatus.
Solution Approach 2:
Each display apparatus is designed to be a complete, functional unit that can operate independently to display its designated color. The optical elements in each apparatus are optimized for their specific color range, creating universal building blocks that can be combined to achieve full-color display capabilities.
3Manufacturing precision
If multiple display apparatuses with optical elements are combined, then resolution and luminance are improved, but device complexity increases
Solution Approach 1:
The invention divides the high-resolution display into multiple display apparatuses, each handling a portion of the overall image in a specific color. This segmentation allows each apparatus to achieve high resolution for its color channel, and the optical elements are designed to precisely guide light to maintain overall image quality while managing system 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 approach enables the creation of high-luminance, high-resolution, and high-definition displays with a wide color gamut while reducing power consumption and improving reliability.
Implementation Method 1
The first input portion diffraction element has a function of making the first light enter the first light guide plate, and the second input portion diffraction element has a function of making the second light enter the second light guide plate
Implementation Method 2
The optical element includes a first light guide plate and a second light guide plate... The first output portion diffraction element has a function of delivering the first light entering the first light guide plate to an outside of the first light guide plate
Data Source
AI summary
An electronic device with high luminance is provided. The electronic device includes a first display apparatus, a second display apparatus, and an optical element. The first display apparatus includes a first light-emitting element and the second display apparatus includes a second light-emitting element. A color of first light emitted from the first light-emitting element is different from a color of second light emitted from the second light-emitting element. An optical element is provided between the first display apparatus and the second display apparatus. The optical element includes a first light guide plate and a second light guide plate.