Sub-Mask Assembly Layout for Precise Emission Pattern Alignment
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Solution Overview
Problem
Existing mask assemblies for display panel manufacturing lack reliability and efficiency in the formation of emission patterns, primarily due to limitations in the design and arrangement of opening regions in the masks.
Innovation Solution
A mask assembly comprising a mask and a mask frame, where the mask includes multiple sub-masks arranged in a specific direction, connected by a connecting stick, and each sub-mask features a central part with a cell region and a welding part, enhancing alignment and connection reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple sub-masks are arranged and connected to improve manufacturing efficiency, then productivity increases, but alignment precision and connection reliability deteriorate
Solution Approach 1:
The mask is divided into multiple sub-masks arranged in parallel, each with dedicated welding parts at both ends. This segmentation allows independent handling and precise alignment of each sub-mask while maintaining overall manufacturing efficiency. The welding parts serve as standardized connection interfaces that ensure precise joining between sub-masks.
Solution Approach 2:
Connecting sticks are introduced as intermediary elements to join adjacent sub-masks through welding parts. These connecting sticks act as mediators that facilitate precise alignment and reliable connection between sub-masks, solving the alignment precision problem while maintaining the productivity benefits of multiple sub-masks.
2Reliability
If multiple sub-masks are connected by connecting sticks, then device complexity increases, but connection reliability improves
Solution Approach 1:
The connection structure is segmented into standardized welding parts on sub-masks and matching connecting sticks. This segmentation creates modular, repeatable connection units that improve reliability through consistency while managing complexity through standardization. Each welding part-connecting stick pair forms an independent, reliable connection unit.
Solution Approach 2:
The welding parts are designed with specific geometric parameters (width, length, position) that optimize both connection reliability and manufacturing simplicity. By carefully controlling these parameters, the invention achieves high connection reliability without excessive structural complexity, as the standardized dimensions facilitate automated manufacturing and assembly.
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 proposed mask assembly improves manufacturing efficiency and reliability by ensuring precise alignment and robust connection of sub-masks, leading to enhanced performance in forming emission patterns for display elements.
Implementation Method 1
The first connecting stick and the welding part are connected with each other through a plurality of welding agents
Data Source
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AI summary
A mask assembly includes: a mask and a mask frame, which supports the mask. The mask includes: a plurality of sub-masks, which are arranged in a first direction and each include a short side that extends in the first direction and a long side that extends in a second direction crossing the first direction; and a connecting stick, which overlaps the long side in a plan view and connects two sub-masks adjacent to each other among the plurality of sub-masks. Each of the plurality of sub-masks includes: a central part including a cell region defining a plurality of holes therein; and a welding part disposed along the long side. The connecting stick and the welding part are connected with each other through a plurality of welding agents.