Flexible Display Substrate Layout for Protected Side Wiring
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Solution Overview
Problem
Existing display devices with separate upper and lower substrates and bonding processes are heavy, prone to side wiring damage during tiling, and have increased bezel areas, which affect product reliability and weight.
Innovation Solution
A display device and tiling display apparatus using a single flexible substrate with a bendable area that integrates conductive and protective portions for side wiring, eliminating the need for separate substrate bonding and side sealing, and minimizing bezel area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If separate upper and lower substrates are used with bonding processes, then structural stability is improved, but device weight increases and manufacturing complexity increases
Solution Approach 1:
The patent merges the upper substrate and lower substrate into a single integrated substrate structure. The substrate includes a front panel area, a back panel area, and a bendable area connecting them, eliminating the need for separate substrate bonding processes while reducing overall device weight and simplifying manufacturing.
2Ease of manufacture
If side wiring is exposed without protection, then manufacturing simplicity is improved, but reliability deteriorates due to side wiring damage during tiling
Solution Approach 1:
The patent implements a protecting portion that covers the side wiring portion in advance before the tiling process. This preliminary protective action prevents side wiring damage during subsequent handling and installation, improving reliability without significantly complicating manufacturing.
3Reliability
If bezel area is increased to protect side wiring, then reliability is improved, but device area efficiency deteriorates
Solution Approach 1:
The patent moves the protection mechanism from the two-dimensional bezel area to the third dimension by introducing a protecting portion that covers the side wiring vertically. This dimensional transition allows reliable side wiring protection without increasing the horizontal bezel area, maintaining display area efficiency.
4Adaptability or versatility
If multiple separate components are used for side wiring and protection, then functional flexibility is improved, but device complexity increases
Solution Approach 1:
The patent combines the side wiring portion and protecting portion into an integrated structure where the protecting portion is formed as a continuous layer covering the side wiring. This merging reduces the number of separate components and assembly steps while maintaining the protective function and electrical conductivity.
Data Source
AI summary
A display device includes a substrate including a front panel area, a back panel area, and a bendable area disposed between the front panel area and the back panel area; a display area located on the substrate and in the front panel area and having a plurality of light-emitting elements; an integrated circuit chip located on the substrate and in the back panel area; and a side wiring portion located on the substrate and in the bendable area so as to electrically connect the light-emitting elements and the integrated circuit chip to each other, wherein the side wiring portion includes a conductive connection portion, and a protecting portion covering the conductive connection portion.