Light-Emitting Cover Assembly for Thin Casing Fixation
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Solution Overview
Problem
Existing light-emitting and illumination devices have a significant thickness that limits their compactness and versatility in applications, particularly in devices like mobile phones where space is critical.
Innovation Solution
A light-emitting device design featuring a substrate with a light-emitting element, a light-transmissive member, and a cover with a recess and a deformable fixing member that allows the device to be securely attached to a casing with a through-hole, reducing the overall thickness by deforming to fit snugly within the casing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a conventional light-emitting device structure is used, then the device can be manufactured with standard components, but the thickness of the device is significant and limits compactness
Solution Approach 1:
The patent combines the cover and fixing member into a single integrated component. The cover includes an upper portion, sidewalls, and a recess, while the fixing member is formed as an integrated part of the cover structure. This merging reduces the number of separate parts and assembly steps, enabling thickness reduction while maintaining structural integrity and fixation functionality.
Solution Approach 2:
The light-emitting element is housed within the recess of the cover structure. The recess is defined by the upper portion and sidewalls of the cover, creating a nested arrangement where the light-emitting element is contained within the cover's internal cavity. This nesting approach optimizes space utilization and contributes to reducing overall device thickness.
2Reliability
If the fixing member is made rigid for secure attachment, then the device can be firmly fixed to the casing, but the fixing member cannot deform to fit snugly within the casing
Solution Approach 1:
The fixing member is made of a material with specific deformable properties that allow it to be compressed during assembly and then recover to provide secure fixation. The material exhibits elastic or viscoelastic characteristics, enabling local deformation under pressing force while maintaining overall structural integrity for reliable attachment to the casing.
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 enables a substantial reduction in the thickness of light-emitting and illumination devices, enhancing their compactness and suitability for use in space-constrained applications while maintaining effective light emission and fixation.
Implementation Method 1
The fixing member is formed of a material that is deformable due to a pressing force generated in the event of an engagement with a counterpart member
Implementation Method 2
injecting a light-transmissive material into a space defined in the molding device and by hardening or curing the injected light-transmissive material
Data Source
AI summary
A method for manufacturing a light-emitting device includes: forming a cover, which comprises: sandwiching a fixing member by a molding device, injecting a light-transmissive material into a space defined in the molding device, and hardening or curing the injected light-transmissive material, wherein the formed cover comprises an upper portion, a sidewall, and a recess, the cover being integrated with the fixing member such that the fixing member projects from a part of an outer lateral surface of the sidewall; disposing a light-transmissive member on a light extraction surface of a light-emitting element to be disposed on a substrate; and disposing the cover so that the light-emitting element is housed in the recess. The fixing member is formed of a material that is deformable due to a pressing force generated in the event of an engagement with a counterpart member.