Curved Cover Substrate Attachment Device for Display Panels
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Solution Overview
Problem
Current methods for attaching a curved cover substrate to a display panel in flat panel displays often result in bubble formation, which are difficult to remove, hindering the manufacturing of curved display panels.
Innovation Solution
A substrate attachment device with a guide unit, first and second support units, and a roller unit that aligns and attaches a curved cover substrate to a display panel, minimizing bubble formation by ensuring smooth contact along a curved guide path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a roller-to-stage manner is used to attach a curved cover substrate to a display panel, then the attachment process can be performed using existing equipment, but bubbles are generated between the display panel and the curved cover substrate that are difficult to remove
Solution Approach 1:
The guide unit is configured with a curved guide path that matches the curvature of the cover substrate. This curvature alignment allows the cover substrate to follow the curved path during attachment, ensuring uniform contact between the cover substrate and display panel while preventing bubble formation. The curved guide path is specifically designed to correspond to the curved surface of the cover substrate, enabling smooth attachment without air entrapment.
2Adaptability or versatility
If a curved cover substrate is attached to a display panel, then a curved display panel can be manufactured, but existing flat panel attachment equipment cannot be used
Solution Approach 1:
The guide unit incorporates a curved guide path that matches the curvature of the cover substrate. This curved geometry enables the attachment equipment to handle curved substrates effectively, allowing the manufacturing of curved display panels while using a modified but not entirely new equipment architecture.
Solution Approach 2:
The attachment device is divided into functional modules: a guide unit with a curved guide path, a support unit for holding the display panel, and a roller unit for applying pressure. This segmentation allows each component to be optimized for its specific function while maintaining overall system manageability and adaptability.
3Productivity
If bubbles are generated between the display panel and curved cover substrate, then the attachment appears complete, but the display quality is compromised
Solution Approach 1:
The curved guide path of the guide unit ensures that the cover substrate maintains uniform contact with the display panel throughout the attachment process. By aligning the guide path curvature with the substrate curvature, the system prevents air entrapment and bubble formation, ensuring high display quality while maintaining efficient attachment speed.
Data Source
AI summary
A substrate attachment device of a display device and a method for manufacturing the display device using the same are disclosed. The substrate attachment device of the display device includes a guide unit which is curvedly disposed, a first support unit which moves forward and backwards along the guide unit and transfers a cover substrate having a curved surface, a second support unit which is disposed on the guide unit, moves forward and backwards, and transfers a display panel, and a roller unit which rotates so that the cover substrate having the curved surface is attached to the display panel.