Light Emitting Device Sealing Nozzle Dangling Thread Formation
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Solution Overview
Problem
The existing methods for manufacturing light emitting devices with multiple light sources are inefficient due to the need for repeated movement of the discharge device in both horizontal and vertical directions to form multiple sealing members, resulting in increased manufacturing time.
Innovation Solution
The method involves forming 'dangling thread portions' of sealing material from the discharge device nozzles, allowing for quicker and more precise formation of successive sealing members by reducing the vertical movement distance and enabling smoother material supply, thus reducing the time required for forming multiple sealing members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the discharge device moves sequentially to form multiple sealing members, then each sealing member can be formed with precise material supply, but the manufacturing time increases due to repeated horizontal and vertical movements
Solution Approach 1:
The discharge device forms dangling thread portions of sealing material in advance before moving to the next light source position. This preliminary action allows the material supply to be ready and continuous when reaching the next position, eliminating waiting time and enabling seamless transition between sealing members without compromising formation precision
Solution Approach 2:
The sealing material supply is maintained continuously through the dangling thread portions that bridge between movements. Instead of stopping and restarting material supply at each position, the continuous thread ensures uninterrupted flow, significantly reducing total manufacturing time while maintaining precise material placement
2Manufacturing precision
If the discharge device suspends and resumes material supply between movements, then material can be positioned accurately, but the overall formation time increases due to repeated suspension and resumption
Solution Approach 1:
Dangling thread portions are formed in advance during the material supply process before movement occurs. This preliminary preparation ensures that when the discharge device moves to the next position, the material supply is already positioned and ready to continue seamlessly, eliminating the need to suspend and resume supply operations
Solution Approach 2:
The sealing material supply operates continuously throughout the entire process of moving between light sources. The dangling thread portions act as a bridge that maintains continuous material flow, eliminating interruptions and significantly improving formation speed while preserving placement accuracy
Data Source
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AI summary
A method of manufacturing a light emitting device that includes a plurality of light-emitting parts on a substrate, the method includes supplying a sealing material through a plurality of nozzles of a discharge device to form a plurality of sealing members each covering a respective one of the plurality of the light sources. The forming the sealing members includes a first forming and a second forming successive to the first step and then successive to one another, In the first forming the sealing member, the sealing member is formed while leaving a portion of the sealing material dangling from each of the plurality of nozzles of the discharge device as a dangling thread portion, and the second forming is started while dangling thread portions are kept dangling from the discharge device.