Display Substrate Gripper Release for Tight Mask Frame Deposition
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Solution Overview
Problem
The need to increase the non-display area of a substrate due to the requirement for a free area to support the substrate by a gripper, and the separate processing of a mask frame to prevent interference with the gripper during the manufacturing of a display apparatus.
Innovation Solution
An apparatus and method that includes a mask frame with an opening area, a mask sheet, a chuck part, a gripper with a holder and pressing part, and a deposition source, allowing the gripper to release gripping and move away from the mask frame, reducing interference and enabling efficient substrate handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the substrate is supported and transported by a gripper requiring a free area, then the substrate can be handled during deposition, but the non-display area of the substrate increases
Solution Approach 1:
The gripper is designed with movable pressing parts that can dynamically adjust their position. The pressing parts can move from an initial position where they press against the substrate for gripping to a retracted position where they clear the substrate surface, allowing the substrate to be placed adjacent to the mask without requiring additional non-display area.
Solution Approach 2:
The gripper structure is divided into separate components: a holder that supports the substrate and pressing parts that can independently move. This segmentation allows the pressing parts to be retracted while the holder remains in place, enabling the substrate to be positioned close to the mask without interference from the gripping mechanism.
2Reliability
If the substrate is mounted on a mask sheet and mask frame while being supported by the gripper, then the substrate can be fixed during deposition, but the mask frame must be processed separately to prevent interference with the gripper
Solution Approach 1:
The pressing parts of the gripper are designed to be movable rather than fixed. During substrate mounting, the pressing parts can be retracted or moved to a clear position, allowing the substrate to be placed on the mask sheet and mask frame without interference. This eliminates the need for separate mask frame processing while maintaining reliable substrate fixation during deposition.
Solution Approach 2:
The gripper's pressing parts are retracted or positioned to clear the substrate surface before the substrate is placed on the mask assembly. This preliminary action prevents potential interference during mounting and eliminates the need for subsequent mask frame processing to accommodate the gripper structure.
3Stability of the object's composition
If the gripper maintains continuous contact with the substrate for support, then the substrate can be transported stably, but the non-display area increases and interferes with mask frame placement
Solution Approach 1:
The gripper transitions from a continuous contact state during transport to a non-contact state during deposition. The pressing parts can be moved to maintain substrate stability during transport, then retracted to clear the substrate surface when the substrate needs to be placed adjacent to the mask, thus reducing the non-display area without compromising transport stability.
Data Source
AI summary
Provided are an apparatus and method for manufacturing a display apparatus. The apparatus includes a mask frame including an opening area in a central portion of the mask frame, a mask sheet disposed on the mask frame to cover the opening area, a chuck part disposed to face the mask sheet and fix a display substrate, a gripper disposed between the mask sheet and the chuck part to grip the display substrate and to release gripping in case that the chuck part approaches the display substrate and fixes the display substrate, and a deposition source disposed opposite the chuck part with the mask sheet between the deposition source and the chuck part.