Light-Emitting Device with Segmented Light-Transmissive Members
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Solution Overview
Problem
Existing light-emitting devices for high-definition displays face challenges in achieving high definition and reducing manufacturing costs, particularly in forming light-transmissive members that cover recesses while minimizing pseudo-lighting and ensuring reliable operation.
Innovation Solution
A light-emitting device with a base member having recesses and lateral walls, where light-emitting elements are mounted in recesses and covered by a light-transmissive layer, with portions of the layer removed to form light-transmissive members that are separated by the lateral walls, reducing pseudo-lighting and enhancing image sharpness and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a light-transmissive layer continuously covers all recesses, then manufacturing is simplified and productivity increases, but pseudo-lighting occurs and image sharpness deteriorates
Solution Approach 1:
The continuous light-transmissive layer is segmented into individual light-transmissive members by removing portions between adjacent recesses. This segmentation prevents light from leaking between adjacent light-emitting elements, eliminating pseudo-lighting while maintaining the simplicity of using a continuous layer for coverage.
2Manufacturing precision
If light-transmissive members are separated by lateral walls, then pseudo-lighting is reduced and image sharpness improves, but manufacturing complexity increases
Solution Approach 1:
The lateral walls that separate recesses are merged with the light-transmissive members to form an integrated structure. The light-transmissive members are positioned such that they extend down to or below the lateral walls, combining the light transmission function with the light blocking function in a single component, thereby reducing manufacturing complexity.
3Ease of operation
If the upper surface of light-transmissive members is located higher than the lateral wall, then viewing angle increases, but water ingress risk increases
Solution Approach 1:
A seal structure is formed at the interface between the light-transmissive member and the lateral wall before final assembly. The seal structure proactively prevents water from entering the recess, addressing the water ingress risk created by the elevated upper surface of the light-transmissive member.
Data Source
AI summary
A method of manufacturing a light emitting device that includes a plurality of light emitting parts is provided. The method includes providing a base member having a plurality of recesses; mounting at least one light-emitting element in each of the plurality of recesses; disposing a light-transmissive layer continuously covering the plurality of recesses; and removing portions of the light-transmissive layer on the lateral wall between adjacent recesses to expose corresponding portions of the lateral wall, to obtain a plurality of light-transmissive members.