Foldable Substrate Peripheral Circuit Layout for Compact Display
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Solution Overview
Problem
There is a limitation in reducing the width of the framework molding of a display panel while maintaining the functions of the peripheral circuit sections that drive the pixels of the pixel array section.
Innovation Solution
A display apparatus with a foldable substrate where the peripheral circuit sections are disposed on the substrate end portions folded around the pixel array section, allowing for a reduction in the size of the framework molding without restricting the functions of the peripheral circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the peripheral circuit sections are disposed on the substrate end portions folded around the pixel array section, then the width of the framework molding is reduced, but the functions of the peripheral circuit sections must be maintained
Solution Approach 1:
The peripheral circuit sections are moved from the conventional planar arrangement to a folded three-dimensional configuration on the substrate end portions. This spatial reconfiguration allows the circuits to be positioned around the pixel array section in a folded manner, reducing the framework molding width while preserving all circuit functions through maintained electrical connections via connection portions.
Solution Approach 2:
The peripheral circuit sections are nested on the folded substrate end portions that wrap around the pixel array section. This nesting arrangement allows the circuit sections to be compactly positioned in the folded regions, effectively utilizing the three-dimensional space and reducing the overall framework width while maintaining functional integrity.
2Length of stationary object
If the substrate end portion is folded around the pixel array section, then the framework molding width is reduced, but the electrical connection between peripheral circuits and external components must be maintained
Solution Approach 1:
Connection portions are introduced as intermediary elements that bridge the peripheral circuit sections on the folded substrate end portions with external components. These connection portions serve as mediators that maintain reliable electrical connections despite the folded configuration, ensuring signal and power transmission integrity between the compactly arranged circuits and external systems.
3Volume of moving object
If the peripheral circuit sections are placed on folded substrate end portions, then the display panel becomes more compact, but the circuit layout complexity increases
Solution Approach 1:
The substrate is segmented into distinct regions: the pixel array section and the substrate end portions. The peripheral circuit sections are specifically assigned to the substrate end portions, creating a clear spatial segmentation that facilitates compact folding while organizing the circuit layout into manageable, functionally-separated modules, thereby reducing overall layout complexity.
Data Source
AI summary
Disclosed herein is a display apparatus, including: a foldable substrate; a pixel array section including a plurality of pixels disposed on the substrate and each including an electro-optical device; the foldable substrate being folded at a substrate end portion at least on one side thereof around the pixel array section; a peripheral circuit section disposed on the substrate end portion and adapted to drive the pixels of the pixel array section; and a pad section provided on the substrate end portion on which the peripheral circuit section is provided and adapted to electrically connect the peripheral circuit section to the outside of the substrate.