OLED Evaporation Mask Structure for Special-Shaped Panel Patterning
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Solution Overview
Problem
The high cost of manufacturing special-shaped masks for OLED display panels poses a challenge, as existing masks with regular shapes are not suitable for special-shaped panels, leading to increased costs.
Innovation Solution
A mask device with a framework and strip plates of varying widths and concave-convex structures is designed to form special-shaped evaporation areas, allowing for efficient and cost-effective production of special-shaped display panels through a one-time evaporation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a special-shaped mask is manufactured for special-shaped display panels, then the manufacturing precision and adaptability are improved, but the manufacturing cost increases
Solution Approach 1:
The mask structure is divided into a framework and multiple independent strip plates. Each strip plate can be independently manufactured and then assembled to form the complete mask. This segmentation allows standardization of components while achieving special-shaped evaporation areas through selective arrangement and configuration of the strip plates, reducing overall manufacturing cost.
Solution Approach 2:
The strip plates are designed with universal applicability - they can be configured in different arrangements to create various special-shaped evaporation areas. The same basic strip plate components can serve multiple functions by being positioned differently or combined with different frameworks, eliminating the need to manufacture entirely custom masks for each special shape.
2Manufacturing precision
If multiple evaporation steps are used to form complex patterns, then the manufacturing precision is improved, but the productivity decreases
Solution Approach 1:
Multiple evaporation processes are merged into a single evaporation step by designing the mask with pre-configured strip plates that define all required evaporation areas simultaneously. The framework and strip plate arrangement enable complex patterns to be formed in one go, eliminating the need for multiple sequential evaporation steps and thereby improving productivity.
3Ease of manufacture
If a regular-shaped mask is used for special-shaped display panels, then the manufacturing cost is reduced, but the adaptability decreases
Solution Approach 1:
The mask design incorporates adjustable and reconfigurable strip plates that can be dynamically arranged to match different special-shaped display panel requirements. This dynamic configuration capability allows the same mask framework to adapt to various shapes and sizes, providing versatility without requiring complete custom mask manufacturing for each application.
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 solution enables the efficient and cost-effective manufacturing of special-shaped OLED display panels by forming complex patterns in a single evaporation step, reducing the need for custom masks and lowering production costs.
Implementation Method 1
The evaporation source sends evaporation substances towards the mask module, and the evaporation substances are evaporated to evaporation targets through the mask module
Data Source
AI summary
A mask module includes a framework and a first strip plate fixed on the framework and extending along a first direction. The first strip plate is provided with a first concave-convex structure on one side edge along the first direction. At least one convex structure is provided in a middle of the first concave-convex structure along the first direction. The convex structure and the first stripe plate are integrally formed.