Display Panel Dummy Patterns Prevent Color Filter Peeling
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Solution Overview
Problem
Display apparatuses face the issue of color filter peeling, which affects image quality and durability, particularly at the boundaries between the display area and non-display area.
Innovation Solution
Incorporating dummy patterns made of metal materials that reflect light, these patterns are strategically placed in the display and non-display areas to overlap with the color filters, preventing peeling by ensuring uniform light exposure during the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If color filters are disposed only in the display area, then the manufacturing process is simple, but the color filters peel at the boundary area between display area and non-display area
Solution Approach 1:
Dummy patterns are formed in advance in the non-display area before color filters are applied. This preliminary action creates a light-reflecting structure that prevents peeling of color filters at the boundary area between display and non-display areas during subsequent manufacturing and operation.
Solution Approach 2:
The dummy patterns act as an intermediary element between the non-display area substrate and the color filters in the display area. These metal-based dummy patterns reflect light to ensure uniform exposure during manufacturing and prevent color filter peeling at the boundary region.
2Reliability
If dummy patterns are added to prevent color filter peeling, then color filter adhesion is improved, but the manufacturing complexity increases
Solution Approach 1:
Dummy patterns are selectively formed only in the non-display area where peeling occurs, rather than across the entire substrate. This localized approach prevents color filter peeling at critical boundary regions while minimizing additional manufacturing complexity in the display area.
Solution Approach 2:
The dummy patterns are designed with specific material properties (metal materials with high light reflectivity) and geometric parameters (extending in first direction, positioned at boundaries) to optimize their light-reflecting function and prevent color filter peeling through controlled light exposure during manufacturing.
3Manufacturing precision
If uniform light exposure is achieved through dummy patterns, then color filter peeling is prevented, but the device structure becomes more complex
Solution Approach 1:
The dummy patterns are segmented into multiple regions corresponding to different boundary areas (first boundary area, second boundary area, etc.). Each segment is positioned to address specific peeling-prone regions, ensuring uniform light exposure across the entire non-display area while maintaining a manageable structural complexity.
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 effectively prevents color filter peeling, enhancing the reliability and longevity of the display apparatus by maintaining the integrity of the color filters at the boundary areas.
Implementation Method 1
The dummy patterns include a metal material that reflects a light
Data Source
AI summary
A display apparatus includes a display panel including a display area in which a plurality of pixels is disposed and a non-display area adjacent to the display area. A plurality of dummy patterns extends in a first direction and is disposed in a predetermined area of the display area and a predetermined area of the non-display area at a boundary area between the display area and the non-display area. A plurality of color filters extends in a second direction perpendicular to the first direction in the display area to overlap with the pixels arranged in the second direction. A predetermined area of the color filters disposed adjacent to the non-display area in the second direction is partially overlapped with a corresponding dummy pattern.