OLED Mask Plate Assembly with Modular Strips for Evaporation
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Solution Overview
Problem
The current method of using F-masks for shielding the AA region in OLED manufacturing is costly and time-consuming, requiring multiple moldings and leading to potential delays if masks are damaged.
Innovation Solution
A mask plate assembly with a first mask plate and multiple types of first mask strips, featuring a hollowed-out portion with multiple holes that can cooperate with different mask strips to form various functional structures, allowing for shared use and reducing the need for multiple moldings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple F-masks are manufactured for different EL films, then each film can be tested properly, but the manufacturing cost increases and the production time extends
Solution Approach 1:
The patent applies universality by designing a single F-mask that can be used for multiple EL films (red, green, blue, and auxiliary light-emitting layers). The mask includes multiple hole groups corresponding to different film positions, allowing one mask to perform functions that previously required five separate masks. This reduces manufacturing cost and time while maintaining testing accuracy for each film type.
2Reliability
If multiple F-masks are manufactured for different EL films, then each film can be tested properly, but the number of molding operations increases
Solution Approach 1:
The patent applies universality by designing a single F-mask that can be used for multiple EL films (red, green, blue, and auxiliary light-emitting layers). The mask includes multiple hole groups corresponding to different film positions, allowing one mask to perform functions that previously required five separate masks. This reduces manufacturing cost and time while maintaining testing accuracy for each film type.
3Reliability
If F-masks are damaged, then repair or remanufacturing is required, but this causes project schedule delays
Solution Approach 1:
The patent applies universality by designing a single F-mask that can be used for multiple EL films (red, green, blue, and auxiliary light-emitting layers). The mask includes multiple hole groups corresponding to different film positions, allowing one mask to perform functions that previously required five separate masks. This reduces manufacturing cost and time while maintaining testing accuracy for each film type.
4Productivity
If a single F-mask is used for multiple EL films, then manufacturing cost and time are reduced, but the mask structure becomes more complex
Solution Approach 1:
The patent applies segmentation by dividing the F-mask into multiple hole groups (first, second, third, fourth hole groups) with different positions and configurations. Each hole group corresponds to specific EL film positions, allowing the complex functionality to be organized into manageable segments. This structured segmentation makes the complex mask easier to manufacture and use compared to a fully integrated design.
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 reduces manufacturing costs and time by allowing a single mask plate to be used for multiple functional structures, and enables continued production even if some mask plates are damaged, preventing project delays.
Implementation Method 1
the method of mask is adopted to form luminescent materials through evaporation
Data Source
AI summary
A mask plate assembly is provided, including a first mask plate and multiple types of first mask strips having different effective evaporation patterns, where the first mask plate includes a first frame and a first support strip arranged between a set of opposite sides of the first frame, a first hollowed-out portion including multiple first holes is arranged in a first region of the first support strip, and the multiple first holes are used for cooperating with the multiple types of first mask strips for evaporation to form different first functional structures.