Display Component Beam Splitting Light Loss
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Solution Overview
Problem
In display components that use a light source unit for backlighting, natural light is not directly usable as it needs to be converted into polarized light, resulting in a 50% loss of light intensity due to the inability to utilize P-polarized light converted by beam splitting units.
Innovation Solution
The implementation of at least two beam splitting units that generate reflected lights with matching directions, and a display unit that adjusts these reflected lights to form initial light by adding image information, along with a polarization converting unit to ensure full utilization of source light, either through multiple beam splitting units or a single polarization unit that reduces thickness and enhances energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a beam splitting unit is used to convert natural light into polarized light, then the liquid crystal layer can be illuminated with polarized light, but 50% of light intensity is wasted due to inability to utilize P-polarized light
Solution Approach 1:
The patent divides the light conversion process into multiple stages using multiple beam splitting units arranged in series. Each beam splitting unit converts a portion of the remaining natural light into polarized light, allowing progressive utilization of both S and P polarized light components rather than discarding half immediately.
Solution Approach 2:
The patent implements continuous light conversion through multiple beam splitting units where the output of one unit becomes the input of the next. This ensures that light is continuously converted from natural to polarized state in stages, maximizing energy utilization without interruption.
2Use of energy by moving object
If multiple beam splitting units are used to convert natural light into polarized light, then energy utilization is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple beam splitting units into a single integrated optical path where light passes sequentially through each unit. This merging approach maintains the energy utilization benefits of multiple conversions while presenting a unified, manageable optical structure rather than separate independent systems.
Solution Approach 2:
The patent arranges beam splitting units in a series configuration along the light path, transforming the two-dimensional beam splitting operation into a multi-stage linear process. This dimensional arrangement allows multiple conversions to occur in sequence without requiring complex three-dimensional spatial arrangements.
3Device complexity
If a single polarization unit is used instead of multiple beam splitting units, then device complexity is reduced, but the thickness of the polarization unit becomes large
Solution Approach 1:
The patent segments the polarization conversion function across multiple thin beam splitting units arranged in series, rather than using a single thick polarization unit. Each unit contributes a portion of the total polarization conversion, achieving the desired functionality with smaller individual components.
Solution Approach 2:
The patent transitions from a single thick polarization unit (one-dimensional thickness problem) to multiple thin beam splitting units arranged along the light path (spatial distribution). This redistributes the polarization conversion function across multiple positions rather than concentrating it in a single thick component.
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 improves overall energy utilization in display components by minimizing light loss and achieving uniform illumination, while also facilitating miniaturization of the display component.
Implementation Method 1
a beam splitting unit (PBS) converts natural light into polarized light, converted S-polarized light is used to illuminate the liquid crystal layer
Implementation Method 2
a first polarization unit configured to at least partially convert the source light into first reflected light, which is polarized light in a first polarized state
Data Source
AI summary
A display component and an electronic device using the display component are described. The display component includes a light source unit configured to emit source light; at least two beam splitting units configured to receive the source light and generate at least two reflected lights, wherein directions of the at least two reflected lights match with each other; a display unit configured to receive the at least two reflected lights and adjust the at least two reflected lights to become initial light by adding information of an image to be displayed into the at least two reflected light.