Angle Control Member for Display Deposition Efficiency
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Solution Overview
Problem
Existing display device manufacturing technologies face challenges in efficiently depositing organic materials on substrates, leading to issues such as material waste and reduced deposition efficiency due to phase changes in the deposition material.
Innovation Solution
The proposed manufacturing apparatus includes a substrate, a nozzle for spraying deposition material, a crucible for storing the material, a reflector to block heat exchange, and an angle control member with specific heat dissipation members and inclination angles to control the deposition area and prevent material deposition on the angle control member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the deposition material is sprayed directly onto the substrate without angle control, then the deposition process is simple, but the material utilization rate is low due to phase changes and material waste
Solution Approach 1:
The patent introduces an angle control member that extends in an inclined direction relative to the substrate, adding a spatial dimension control to the deposition process. This inclined structure guides the deposition material along a controlled path, preventing direct contact with the substrate until the material remains in gaseous phase, thereby reducing material waste while maintaining process feasibility
Solution Approach 2:
The angle control member acts as an intermediary between the deposition material and the substrate. It provides a controlled interface that manages the phase transition of the deposition material, allowing the material to be deposited efficiently while preventing premature phase changes that would cause material waste
2Productivity
If the deposition material is heated to maintain gaseous phase, then deposition efficiency is improved, but heat exchange with the substrate may cause unwanted deposition on non-target areas
Solution Approach 1:
The angle control member is divided into multiple sections: a first section that receives the deposition material, a second section that controls the phase transition, and a third section that directs the material to the substrate. This segmentation allows different parts of the system to perform specialized functions, efficiently managing heat distribution and preventing unwanted deposition on non-target areas
Solution Approach 2:
The patent applies different thermal properties to different sections of the angle control member. The first section has properties suitable for receiving hot deposition material, the second section is designed for controlled cooling to maintain phase transition, and the third section directs the material flow. This local differentiation of thermal characteristics enables efficient deposition while preventing heat-related unwanted deposition
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
This solution improves the utilization rate of the deposition material and enhances deposition efficiency by preventing material waste and maintaining the material in a gaseous phase during deposition, thereby improving the productivity and quality of display devices.
Implementation Method 1
a heater disposed at an outside of the crucible, the heater that heats the crucible and evaporates the deposition material
Implementation Method 2
a reflector disposed between the crucible and the nozzle, the reflector that blocks heat exchange between the crucible and the nozzle
Implementation Method 3
The first member may include a heat dissipation member having a high emissivity
Implementation Method 4
Each of the heat dissipation members may be mirror-finished to reflect radiant heat transmitted from the heater
Data Source
AI summary
An apparatus for manufacturing a display device includes: a substrate; a nozzle including a nozzle hole that sprays a deposition material on the substrate; a crucible connected to the nozzle, the crucible storing the deposition material; a reflector disposed on the crucible, the reflector including an opening area overlapping the nozzle; and an angle control member connected to the reflector. The angle control member includes a first member disposed to face the nozzle, a third member disposed to face the substrate, and a second member disposed between the first member and the third member.