Asymmetric Lid-to-Base Layout for Stable LED Package Bonding
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Solution Overview
Problem
Existing light-emitting devices face challenges in achieving improved production efficiency, reduced weight, and stable bonding balance between the base and lid body during manufacturing.
Innovation Solution
A light-emitting device design that includes a base with a frame portion and a lid body bonded to the base, featuring a specific outer edge shape and bonding pattern to enhance production efficiency and reduce weight, while maintaining stable bonding processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional symmetric bonding structure is used between base and lid body, then bonding stability may be maintained, but production efficiency is reduced and weight cannot be optimized
Solution Approach 1:
The patent applies asymmetry by positioning the lid body offset from the center of the base. Specifically, the lid body is bonded to the base such that its center is shifted in a predetermined direction, creating an asymmetric bonding structure. This asymmetric design optimizes the internal space arrangement, allows for more efficient component layout, and improves production efficiency while reducing overall device weight compared to conventional symmetric bonding structures.
2Weight of stationary object
If the lid body is positioned asymmetrically on the base, then production efficiency and weight reduction are achieved, but bonding balance stability may be compromised
Solution Approach 1:
The patent implements asymmetry by bonding the lid body to the base with its center shifted in a predetermined direction. This asymmetric positioning reduces the overall device weight and optimizes the internal space for component arrangement, while the bonding structure itself maintains sufficient stability for manufacturing and operation.
Solution Approach 2:
The patent applies local quality by concentrating the bonding interface at specific regions between the lid body and base. The bonding is performed at designated bonding portions that are strategically positioned to provide adequate mechanical stability and bonding balance, while allowing the overall structure to benefit from asymmetric weight distribution and optimized component placement.
Data Source
AI summary
A light-emitting device includes: a base having an upper surface; a lid body having an upper surface and a lower surface bonded to the base; and a lens member having a lower surface bonded to the lid body. An outer edge of the upper surface of the base has first and second sides parallel to each other. An outer edge of the lower surface of the lid body has first and second sides parallel to each other. In a top view, a distance from the second side of the base to the second side of the lid body is greater than a distance from the first side of the base to the first side of the lid body. A distance from the first side of the lid body to a lens surface is smaller than a distance from the second side of the lid body to the lens surface.