Surface Light Source Device for Extended Reality Content Images
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Solution Overview
Problem
Current display devices for extended reality content images, such as holograms, face limitations in achieving high resolution and 3D effects due to the performance of spatial light modulators and the emission structure of light sources, leading to potential user fatigue and suboptimal display quality.
Innovation Solution
A display device is designed with a spatial light modulator and a surface light source device that includes an organic light emitting display unit with arranged light emitting pixels and an emission driving circuit, where the light emitting pixels are driven at the same timing to provide ultra-low resolution background light, reducing the RC value of light emitting elements and enhancing the 3D effect and resolution of extended reality content images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional backlight structure is used, then the device complexity is low, but the resolution and 3D effect of extended reality content images deteriorate
Solution Approach 1:
The backlight structure is segmented into multiple light emitting pixels arranged in a specific pattern, where each pixel contributes to different depth information. This segmentation enables the generation of high-resolution 3D content by dividing the light source into controllable units that can be independently modulated to create depth effects.
Solution Approach 2:
Different regions of the light emitting pixels are assigned different functions - some pixels are optimized for brightness while others are optimized for depth information. The pixel arrangement creates local variations in light emission characteristics, with certain areas providing enhanced 3D effects while maintaining overall image quality.
2Manufacturing precision
If high resolution background light is used, then the display quality improves, but the manufacturing efficiency deteriorates
Solution Approach 1:
Instead of requiring all light emitting pixels to operate at maximum resolution simultaneously, the system uses partial action where only certain pixels are activated for high-resolution content while others provide ambient illumination. This approach maintains display quality while reducing manufacturing complexity and improving production efficiency.
3Manufacturing precision
If the RC value of light emitting elements is high, then the ease of manufacture is high, but the resolution and 3D effect deteriorate
Solution Approach 1:
The system compensates for high RC values by changing operational parameters - specifically by controlling the timing and sequence of pixel activation. By adjusting the driving waveforms and emission timing, the system achieves high-resolution output despite the inherent electrical characteristics of the light emitting elements, avoiding complex manufacturing optimizations.
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 solution improves the manufacturing efficiency of display devices and increases the resolution and 3D effect of extended reality content images, reducing user fatigue and enhancing display quality by optimizing the light emitting pixel arrangement and surface light emitting structure.
Implementation Method 1
a surface light source device which provides background light to a spatial light modulator... an organic light emitting display unit in which a plurality of light emitting pixels performing surface light emission are arranged
Data Source
AI summary
The present disclosure relates to a display device. The display device includes at least one spatial light modulator displaying an extended reality content image, a surface light source device located behind the at least one spatial light modulator and providing image display light of a first resolution to the at least one 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 light emitting pixels performing surface light emission are arranged and an emission driving circuit driving the plurality of light emitting pixels. Each of the plurality of sub-light emitting pixels includes a plurality of pixel drivers and a light emitting element.