Display Panel Optical Layer Shielding for Light Extraction and Sensing
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Solution Overview
Problem
Current display technologies face challenges in enhancing user experience through improved light extraction efficiency and integration of light sensing functions while avoiding interference and reliability issues caused by optical structures.
Innovation Solution
A display panel design incorporating a substrate with an array layer, a display layer of light-emitting devices, an optical layer with a first optical structure arranged corresponding to intervals between light-emitting devices, and a light-shielding member with a light pass area that overlaps the optical structure, along with an optical sensor, to enhance light extraction and sensing capabilities while preventing light reflection into the array layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If an optical structure is added to improve light extraction efficiency, then light extraction efficiency is improved, but the complexity of the device structure increases
Solution Approach 1:
The optical structure is integrated within the existing display panel layers, with the light-shielding member positioned between the optical layer and array layer. This nesting approach allows the optical structure to be embedded without adding external components, improving light extraction efficiency while minimizing structural complexity increases.
Solution Approach 2:
The light-shielding member serves multiple functions: it shields the array layer from reflected light, defines light pass areas for optical sensing, and works with the optical structure to enhance light extraction. This multi-functionality reduces the need for separate components, addressing both light extraction efficiency and device complexity.
2Reliability
If a light-shielding member is introduced to prevent light reflection into the array layer, then reliability is improved, but the device complexity increases
Solution Approach 1:
The light-shielding member is extracted as a separate functional component between the optical layer and array layer, specifically positioned to block reflected light from reaching the array layer. This extraction approach improves reliability by preventing optical interference while maintaining a manageable structural complexity through targeted placement.
Solution Approach 2:
The light-shielding member features localized light pass areas with specific patterns that correspond to optical sensor locations. This local quality approach allows light to pass through designated areas while blocking other regions, improving optical detection accuracy without requiring complete light blocking that would increase complexity.
3Measurement precision
If the optical structure is positioned corresponding to intervals between light-emitting devices, then light sensing accuracy is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The optical structure is segmented into multiple regions corresponding to intervals between light-emitting devices, with each region aligned to specific optical sensor locations. This segmentation allows independent optimization of each optical path while maintaining overall system performance, improving light sensing accuracy through precise regional positioning.
Solution Approach 2:
The light-shielding member with light pass areas is designed and positioned in advance during the manufacturing process, with predetermined patterns that match the optical sensor array. This preliminary action establishes the optical paths before final assembly, reducing the need for post-manufacturing alignment and lowering precision requirements during manufacturing.
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 light extraction efficiency, enhances display quality, and integrates light sensing functions effectively, reducing the risk of interference and improving the accuracy of optical detection.
Implementation Method 1
a light-shielding member located on a side of the optical layer facing the substrate, wherein the light-shielding member includes a light pass area
Implementation Method 2
an optical layer located on a side of the display layer away from the array layer, where the optical layer includes a first optical structure
Data Source
AI summary
A display panel includes a substrate; an array layer on the substrate; a display layer located on a side of the array layer away from the substrate, where the display layer includes a plurality of light-emitting devices; an optical layer located on a side of the display layer away from the array layer, wherein the optical layer includes a first optical structure, and at least a portion of the first optical structure is arranged corresponding to intervals between the plurality of light-emitting devices; and a light-shielding member located on a side of the optical layer facing the substrate, where the light-shielding member includes a light pass area, and the light pass area and the first optical structure overlap each other.