Bridged TFT Active Blocks for Light-Cured Substrate Bonding
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Solution Overview
Problem
The adhesion between driving substrates and other components in electronic devices is inadequate, leading to a risk of peeling, which is a significant issue in the development of reliable electronic devices.
Innovation Solution
A driving substrate with a thin film transistor divided into multiple active blocks, where the blocks are separated by gaps and connected by bridges, allowing light to pass through and enhance the curing of adhesive materials, thereby improving the bonding between the substrate and other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive material is used to bond driving substrate to other components, then bonding is achieved, but adhesion is insufficient leading to peeling risk
Solution Approach 1:
The thin film transistor is divided into multiple active blocks separated by gaps. These gaps allow light to penetrate through the driving substrate and cure the adhesive material more effectively, enhancing the bonding strength and reducing peeling risk between the driving substrate and other components.
Solution Approach 2:
The gaps between active blocks serve as light transmission channels, acting as intermediaries that enable light to reach and cure the adhesive material. This light-curing mechanism significantly improves the adhesion strength of the bonding interface.
2Strength
If thin film transistor is divided into multiple active blocks with gaps, then light can pass through to improve adhesive curing, but device complexity increases
Solution Approach 1:
The thin film transistor is segmented into multiple active blocks with gaps between them. This segmentation allows light to pass through the gaps and cure the adhesive material effectively, while the segmented structure can be integrated into the existing transistor fabrication process.
Solution Approach 2:
The gaps between active blocks serve multiple functions: they allow light transmission for adhesive curing, maintains electrical isolation between blocks, and can be integrated into the standard transistor layout. This multi-functionality reduces the need for additional complex structures.
3Strength
If active blocks are separated by gaps, then adhesive curing is enhanced, but risk of short circuit between blocks increases
Solution Approach 1:
The thin film transistor is divided into multiple active blocks separated by gaps. The gaps provide physical separation that prevents short circuits between blocks, while still allowing light to pass through for adhesive curing. The segmentation maintains both electrical isolation and bonding effectiveness.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The enhanced adhesion reduces the peeling risk of the driving substrate, while maintaining a suitable size and minimizing the risk of short circuits between adjacent active blocks.
Implementation Method 1
allowing light to pass through and enhance the curing of adhesive materials
Data Source
AI summary
A driving substrate is provided. The driving substrate includes a substrate and a thin film transistor disposed on the substrate. The thin film transistor includes a first metal layer, a second metal layer, and a semiconductor disposed between the first metal layer and the second metal layer. The thin film transistor is divided into a first active block and a second active block, the first active block and the second active block are separated by a first gap in a first direction, and the first active block and the second active block are connected by a first bridge.