Display Apparatus Alignment Mark Protection During Laser Cutting
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Solution Overview
Problem
During laser cutting of display apparatuses, fumes generated from the layers can cover the alignment mark, disrupting the cutting process and potentially leading to inaccuracies.
Innovation Solution
A method of manufacturing a display apparatus that includes a substrate with a display area and a non-display area, featuring an optical functional layer with a light transmitting portion, a light blocking portion, an alignment mark, and a groove. This configuration prevents fumes from covering the alignment mark by directing them into the groove.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If laser cutting is performed on the display apparatus layers, then the layers are cut into desired shapes, but fumes generated during cutting cover the alignment mark
Solution Approach 1:
The alignment mark is extracted from the display area and relocated to the non-display area of the substrate. This separation ensures that the alignment mark is positioned away from the laser cutting path that processes the display layers, preventing fume contamination while maintaining its function for precise alignment during manufacturing
Solution Approach 2:
A groove structure is introduced as an intermediary element between the display area and the alignment mark in the non-display area. This groove serves as a protective barrier that prevents fumes generated during laser cutting from reaching and covering the alignment mark, thereby maintaining visibility and manufacturing precision
2Ease of operation
If the alignment mark is placed in the display area for easy access, then alignment is simplified, but fumes from cutting cover the alignment mark
Solution Approach 1:
The alignment mark is extracted from the display area and relocated to the non-display area of the substrate. This separation ensures that the alignment mark is positioned away from the laser cutting path that processes the display layers, preventing fume contamination while maintaining its function for precise alignment during manufacturing
Solution Approach 2:
A groove structure is introduced as an intermediary element between the display area and the alignment mark in the non-display area. This groove serves as a protective barrier that prevents fumes generated during laser cutting from reaching and covering the alignment mark, thereby maintaining visibility and manufacturing 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
The solution effectively prevents fumes from interfering with the alignment mark, ensuring accurate cutting and maintaining the integrity of the display apparatus.
Implementation Method 1
The cutting process may use a laser. In order to cut the plurality of layers into a desired shape, an alignment mark for guiding lasers may be formed on one of the plurality of layers located on the substrate.
Implementation Method 2
During laser cutting, fumes may be generated from some layers.
Data Source
AI summary
A method of manufacturing a display apparatus includes preparing a substrate including a first area in which a display layer including a plurality of light-emitting devices is located and a second area surrounding the first area, and forming an optical functional layer on the display layer, the optical functional layer including a light transmitting portion at least partially overlapping the plurality of light-emitting devices, a light blocking portion at least partially surrounding the light transmitting portion, an alignment mark formed through the light blocking portion, the alignment mark being disposed adjacent to a boundary between the first area and the second area, and a groove extending along the boundary between the first area and the second area.