Display Panel Packaging Structure Integrating Color Filter and Touch
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Solution Overview
Problem
The prior integrated display panels have complex processes and low efficiency due to the integration of touch and color filter structures, requiring multiple mask processes and peeling steps.
Innovation Solution
The display panel integrates the color filter layer into the packaging structure, using an inkjet-printed color filter layer and forming a black shading network with photoresist layers to reduce mask processes and simplify fabrication, while the touch structure is formed on the packaging layer with a patterned bridge layer to block reflections and replace insulation layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the color filter layer is integrated into the packaging structure with multiple mask processes, then the display panel achieves integrated touch and color filter functions, but the manufacturing process becomes complex and efficiency decreases
Solution Approach 1:
The patent combines the color filter layer and touch structure into a single integrated packaging structure. The color filter layer is formed directly on the packaging layer without requiring separate mask processes, merging two previously separate manufacturing sequences into one unified process flow.
Solution Approach 2:
The packaging structure serves multiple functions simultaneously: it provides mechanical protection, integrates the color filter layer for color display, and incorporates the touch structure for user interaction. This multi-functional design eliminates the need for separate processing steps for each function.
2Manufacturing precision
If multiple mask processes and peeling steps are used for integrated touch and color filter structures, then the display panel achieves precise pattern formation, but the manufacturing efficiency decreases
Solution Approach 1:
The patent extracts and eliminates the mask processes and peeling steps from the manufacturing sequence. Instead of using photomasks to define patterns, the color filter layer is formed directly on the packaging layer, removing the masking step entirely while maintaining precise pattern formation through direct deposition.
Solution Approach 2:
The color filter layer is formed in advance on the packaging layer before the touch structure is added. This preliminary formation of the color filter pattern eliminates the need for subsequent mask processes and peeling steps, streamlining the overall manufacturing flow.
3Device complexity
If the color filter layer is formed separately from the packaging structure, then the manufacturing process is simpler, but the display panel thickness increases
Solution Approach 1:
The color filter layer is merged with the packaging structure, forming an integrated composite layer. This combination eliminates the need for separate color filter and packaging layers, reducing overall panel thickness while maintaining manufacturing simplicity through the unified formation process.
Data Source
AI summary
The present invention provides a display panel and a manufacturing method thereof, the display panel includes a packaging structure, and the packaging structure includes a first inorganic layer, a color filter layer, a second inorganic layer. The color filter layer is disposed between the first inorganic layer and the second inorganic layer, and the color filter layer includes a red photoresist, a green photoresist, and a blue photoresist; and the red photoresist is disposed on a light-emitting side of the red light-emitting pixels, the green photoresist is disposed on a light-emitting side of the green light-emitting pixels, and the blue photoresist is disposed on a light-emitting side of the blue light-emitting pixels.