XR Display Backlight Pixel Layout for Higher-Resolution 3D Images
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Solution Overview
Problem
Existing display devices struggle to provide high resolution and three-dimensional (3D) effects for extended reality content images such as holograms, with the performance of spatial light modulators and light-emitting structures being critical factors that are not adequately addressed.
Innovation Solution
A display device is designed with a surface light source device that includes an organic light-emitting display unit with sub-light-emitting pixels arranged in specific shapes and driven by an emission driving circuit, providing ultra-low resolution background light to a spatial light modulator, and a liquid crystal display unit to enhance image resolution and 3D effects by modulating the resolution of the surface light source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional backlight structure is used, then the device complexity is reduced, but the resolution and 3D effect of extended reality content images deteriorate
Solution Approach 1:
The backlight unit is divided into multiple sub-light-emitting pixels arranged in specific patterns (e.g., checkerboard, stripe) rather than using a conventional continuous backlight. This segmentation allows the spatial light modulator to effectively utilize the light for high-resolution holographic image generation, resolving the contradiction between image resolution and structural complexity by creating a structured yet manageable light-emitting array.
Solution Approach 2:
The patent transitions from conventional 2D backlight arrangements to specialized geometric patterns (checkerboard, stripe, triangular) that create effective 3D light distribution. This dimensional transformation in the light-emitting structure enables enhanced resolution and 3D effects in the displayed holographic images without proportionally increasing overall device complexity.
2Manufacturing precision
If the surface light source resolution is increased, then the 3D effect of holographic images is improved, but the manufacturing efficiency decreases
Solution Approach 1:
Instead of manufacturing a single high-resolution backlight unit, the system uses multiple lower-resolution sub-light-emitting pixels arranged in specific patterns. This segmentation allows each pixel to be manufactured using standard processes, while the collective arrangement achieves the desired high-resolution 3D effect, thereby maintaining manufacturing efficiency.
Solution Approach 2:
The patent employs an ultra-low resolution surface light source with fewer pixels than traditionally required, relying on the specialized geometric arrangements (checkerboard, stripe, triangular patterns) to compensate and achieve effective high resolution. This partial action approach reduces manufacturing complexity while maintaining image quality.
3Reliability
If sub-light-emitting pixels are arranged in specific geometric patterns, then the 3D effect is enhanced, but the device complexity increases
Solution Approach 1:
The pixel arrangement is segmented into distinct geometric patterns (checkerboard, stripe, triangular) that can be independently defined and manufactured. Each pattern type provides specific 3D effect characteristics, allowing optimization without requiring complex irregular arrangements, thus balancing 3D effect enhancement with manageable device complexity.
Solution Approach 2:
The patent varies parameters such as pixel density, arrangement pattern type, and geometric configuration to optimize the 3D effect. By changing these parameters within standardized pattern frameworks rather than creating entirely complex new structures, the system achieves enhanced 3D effects while controlling 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
The device increases the efficiency of manufacturing and enhances the resolution and 3D effect of extended reality content images by simplifying the light-emitting pixel arrangement and surface light-emitting structure, allowing for high-quality holographic image display.
Implementation Method 1
an organic light-emitting display unit in which a plurality of sub-light-emitting pixels performing surface light emission is arranged
Implementation Method 2
a liquid crystal display unit to enhance image resolution and 3D effects by modulating the resolution of the surface light source
Data Source
AI summary
A display device includes at least one spatial light modulator displaying an extended reality content image, a surface light source device disposed behind the at least one spatial light modulator and providing image display light of a first resolution to the spatial light modulator as background light, and at least one image transmission member forming a display path of the extended reality content image. The surface light source device includes an organic light-emitting display unit in which a plurality of sub-light-emitting pixels performing surface light emission is arranged and an emission driving circuit driving the each of the sub-light-emitting pixels of the organic light-emitting display unit.