Evaporation Mask Strip Layout for Special-Shaped OLED Panels
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Solution Overview
Problem
The high manufacturing cost of special-shaped masks for OLED display panels, which are required for producing special-shaped display panels, poses a significant challenge in reducing production costs while maintaining efficiency.
Innovation Solution
A mask device with a framework and first strip plates of varying widths, allowing for the creation of special-shaped evaporation areas through a one-time evaporation process, which simplifies the mask structure and reduces manufacturing costs by designing the shape and position of the strip plates according to the display panel's structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a special-shaped mask is manufactured to produce special-shaped display panels, then the display panel shape requirements are met, but the manufacturing cost of the mask increases significantly
Solution Approach 1:
The mask structure is divided into a framework and multiple independent strip plates. Each strip plate can be independently designed and manufactured with simple rectangular shapes, avoiding the need to manufacture complex special-shaped masks as a single piece. This segmentation allows standard manufacturing processes to be used for each component while achieving special-shaped evaporation areas through their arrangement.
Solution Approach 2:
The strip plates are designed with varying widths to serve multiple functions: they define evaporation areas, create non-evaporation areas, and form special-shaped display panel patterns all through a single mask structure. This multi-functional design eliminates the need for multiple different mask types, reducing overall manufacturing complexity and cost.
2Shape
If a special-shaped mask is used for evaporation, then special-shaped display panels can be manufactured, but the manufacturing efficiency decreases due to complex mask fabrication
Solution Approach 1:
By segmenting the mask into standard rectangular strip plates mounted on a framework, the fabrication process becomes simpler and faster. Each strip plate can be manufactured using standard processes and then assembled, rather than fabricating a complex special-shaped mask as a single piece, thereby improving manufacturing efficiency.
Solution Approach 2:
The strip plates are pre-designed with specific widths and positions that will form the special-shaped evaporation areas when assembled on the framework. This preliminary design and preparation of simple components accelerates the overall mask fabrication process compared to creating complex special-shaped masks from scratch.
3Ease of manufacture
If the mask structure is simplified to reduce cost, then manufacturing cost decreases, but the ability to form special-shaped evaporation patterns may be compromised
Solution Approach 1:
Different strip plates are designed with different widths according to the specific requirements of the evaporation pattern. The framework provides a standardized support structure, while the strip plates provide localized variations in width to create the precise special-shaped evaporation areas needed. This combination maintains manufacturing simplicity while achieving pattern precision.
Solution Approach 2:
The strip plates are designed with asymmetric width variations rather than symmetric patterns. By varying the width of strip plates at different positions, the mask can create complex special-shaped evaporation areas using simple rectangular components, maintaining both manufacturing ease and pattern precision.
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 approach enables the efficient manufacturing of special-shaped display panels with improved production efficiency and reduced costs by forming special-shaped evaporation patterns in a single evaporation process, thereby simplifying the mask structure and lowering production expenses.
Implementation Method 1
an evaporation mask needs to be used as an evaporation mask film to form an evaporation pattern on the evaporation target
Data Source
AI summary
The disclosure discloses a mask device and an evaporation device, so as to manufacture a special-shaped display panel, improve the manufacturing efficiency of the special-shaped display panel and lower the cost. The mask device provided by the embodiment of the present disclosure comprises a framework and a first strip plate, where the first strip plate is fixed on the framework and extends along the first direction, the first strip plate includes a first area and a second area, and the width of the first area is greater than the width of the second area in the direction parallel to the surface of the first strip plate and vertical to the first direction.