OLED Display Panel Packaging Layer Integration
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Solution Overview
Problem
Current OLED display panels have complex manufacturing processes and increased thickness due to the need for multiple photomasks in forming color and touch layers on the packaging layer, which complicates operations and increases costs.
Innovation Solution
A manufacturing method for OLED display panels that involves forming a light emitting device layer, a spacer layer, and multiple metal layers, using photomasks to create openings and electrodes, and integrating a color resist layer and touch layer on the same packaging layer, reducing the number of photomasks and thickness by optimizing the arrangement of insulating and metal layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple photomasks are used to form color film layer and touch layer on packaging layer, then the display panel achieves complete functionality, but the manufacturing process becomes complex and panel thickness increases
Solution Approach 1:
The patent combines the color film layer and touch layer into a single integrated layer structure on the packaging layer. The color resist layer serves dual purposes: it provides color filtering functionality while also forming the basis for the touch sensor electrode pattern. This merging eliminates the need for separate photomask processes for color and touch layers, thereby simplifying the manufacturing process while maintaining complete display functionality.
Solution Approach 2:
The color resist layer is designed to perform multiple functions simultaneously: it acts as a color filter for display, serves as an insulating layer, and forms the pattern for touch sensor electrodes. By making this layer multi-functional, the patent reduces the total number of layers and photomask processes required, directly addressing the complexity issue while preserving all necessary display and touch functionalities.
2Reliability
If multiple photomasks are used to form color film layer and touch layer on packaging layer, then the display panel achieves complete functionality, but the panel thickness increases
Solution Approach 1:
The patent merges the color film layer and touch layer into a single integrated structure, reducing the total number of discrete layers that would otherwise stack and increase thickness. The color resist layer with its patterned electrodes serves both optical and tactile functions within the same physical space, thereby maintaining functionality while reducing overall panel thickness.
Solution Approach 2:
The patent utilizes the planar dimension more effectively by creating a two-dimensional patterned structure within the color resist layer that simultaneously provides color filtering and touch sensing capabilities. This approach avoids adding thickness in the vertical dimension by instead using lateral patterning and in-plane functionality integration.
3Reliability
If multiple photomasks are used in the manufacturing process, then complete layer formation is achieved, but production costs increase
Solution Approach 1:
The patent combines the photomask processes for color film formation and touch layer formation into a single integrated process. By forming both the color resist pattern and touch electrode pattern in one photomask step, the number of expensive photomask materials and processing steps is reduced, directly lowering production costs while still achieving complete and precise layer formation.
Solution Approach 2:
The single photomask process is designed to create a multi-functional pattern that serves both color filtering and touch sensing purposes. This universal patterning approach eliminates the need for multiple specialized photomasks, reducing material costs and process complexity while ensuring complete formation of all necessary layer structures.
Data Source
AI summary
The present invention provides a display panel and a manufacturing method thereof, and a display device. The display panel includes an array substrate, a light emitting device layer, and a packaging layer. The packaging layer includes a plurality of first openings and spacers disposed between adjacent first openings on a spacer layer. Any one of the first openings is filled with a color resist. A plurality of metal wires are disposed in the spacers, and the plurality of metal wires constitute a plurality of first electrodes arranged in a first direction and a plurality of second electrodes arranged in a second direction.