OLED Fabrication Holder With Stepped Supporting Plates
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Solution Overview
Problem
The existing methods for fabricating organic light emitting displays using the LITI method require separate chambers for forming organic/inorganic layers on films and substrates, making the process inconvenient and necessitating three different holders for transporting and supporting substrates, film trays, and masks, which complicates the fabrication process.
Innovation Solution
A holder with multiple supporters having '┐'-shaped supporting plates with stepped parts is designed to support and transport substrates, film trays, and masks simultaneously within a single chamber, preventing pattern distortion and ensuring the substrate remains flat during processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate chambers are used for forming organic/inorganic layers on films and substrates, then the processing can be performed independently, but the fabrication process becomes inconvenient and requires three different holders
Solution Approach 1:
The patent combines the functions of three separate holders (substrate holder, film holder, and mask holder) into a single integrated holder structure. This holder can simultaneously support substrates, film trays, and masks within one chamber, eliminating the need for separate chambers and multiple independent holders while maintaining processing capability.
Solution Approach 2:
The designed holder structure serves multiple functions: it can hold substrates, support film trays, and position masks simultaneously. This multi-functional holder replaces three specialized holders, reducing system complexity while maintaining the ability to perform independent processing operations within a single chamber.
2Area of stationary object
If a large-sized film tray is fabricated to realize large-sized and high resolution OLED, then the display size and resolution are improved, but the tray weight increases and requires additional support structures
Solution Approach 1:
The holder structure provides localized support at specific positions rather than uniform support across the entire large film tray. The supporters are strategically positioned to provide support where needed, reducing the overall material required for the tray while maintaining structural integrity and preventing sagging in critical areas.
Solution Approach 2:
The support system is divided into multiple discrete supporters rather than a single continuous support structure. These segmented supporters are distributed across the holder to provide targeted support for the large film tray, reducing the total weight and material usage while maintaining adequate support for large-sized displays.
3Ease of operation
If the film is transported without adequate support, then the transportation process is simplified, but the film sags and causes pattern distortion
Solution Approach 1:
The holder structure is pre-configured with supporters and supporting plates in appropriate positions before the film transportation process begins. This preliminary arrangement ensures that the film is properly supported during transport, preventing sagging and pattern distortion without complicating the transportation procedure.
Solution Approach 2:
The supporting plates act as intermediary elements between the holder and the film tray. These plates provide a stable intermediate support surface that maintains film flatness during transportation, preventing direct contact issues while avoiding excessive complexity in the transportation mechanism.
Data Source
AI summary
A holder for fabricating an organic light emitting display comprises: a holder main body; and a plurality of supporters provided on opposite sides of the holder main body; wherein each supporter has a ‘┐’-shape and comprises a side wall having a predetermined height, and a supporting plate bent from the side wall. The supporting plate is formed with a plurality of stepped parts to support a substrate, a film tray and a mask, to hold the substrate, the film tray and the mask while the substrate, the film tray and the mask are being transported, and to prevent a pattern from being distorted, thereby transporting and processing a substrate, a film tray and a mask in a single chamber at the same time.