Transparent Display Substrate Layout for Narrow-Bezel Panel Splicing
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Solution Overview
Problem
In the field of display technologies, spliced display panels face issues with large clearances between adjacent substrates and poor display effects due to the need to bend flexible circuit boards to connect driving ICs, which affects the alignment and light emission efficiency.
Innovation Solution
A display substrate design featuring a transparent base substrate with light-emitting units, a protecting layer, and a connecting line, where the connecting line is connected to the light-emitting units through a via in the protecting layer, allowing the driving circuit to be placed on a side distal from the base substrate, eliminating the need for bending flexible circuit boards and minimizing substrate clearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If flexible circuit boards are bent to connect driving ICs to display substrates, then the driving circuit can be connected to the light-emitting units, but large clearances are created between adjacent substrates and display quality deteriorates
Solution Approach 1:
The patent moves the driving circuit from a lateral connection (requiring flexible circuit board bending) to a vertical integration by fabricating the driving circuit directly on the display substrate in the same plane as the light-emitting units. This dimensional reorganization eliminates the need for bending flexible circuit boards and reduces clearance requirements between adjacent substrates in spliced displays.
2Reliability
If flexible circuit boards are used to connect driving ICs, then the connection can be established, but the bending process reduces light emission efficiency and display performance
Solution Approach 1:
The patent merges the driving circuit and light-emitting units into a single integrated structure on the same substrate plane. This integration eliminates the separate flexible circuit board component that causes light emission issues, while maintaining reliable electrical connections through direct patterning of conductive lines on the substrate.
3Ease of manufacture
If driving circuits are placed on flexible circuit boards, then the connection to light-emitting units is achieved, but the clearance between substrates increases in spliced displays
Solution Approach 1:
The patent repositions the driving circuit from a separate flexible circuit board to the same plane as the light-emitting units on the display substrate. This integration dramatically reduces the clearance area required between adjacent substrates in spliced displays, as the connection interface is minimized to direct adjacent patterning rather than requiring space for bent flexible circuits.
Data Source
AI summary
A display substrate includes a base substrate, a plurality of light-emitting units, a protecting layer and a connecting line. The base substrate is a transparent substrate, and the plurality of light-emitting units, the protecting layer and the connecting line are laminated in sequence along a direction distal from the base substrate. A via is arranged in the protecting layer, one end of the connecting line is connected to the plurality of light-emitting units through the via, and the other end of the connecting line is configured to connect to a driving circuit of a display apparatus.