Light-Emitting Substrate Electrostatic Pathway for ESD Protection
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Solution Overview
Problem
Existing light-emitting substrates face challenges with static electricity accumulation during manufacturing, which can lead to damage in the functional areas and affect the display performance.
Innovation Solution
A light-emitting substrate with a functional area and a bonding area, featuring a first electrostatic pathway that conducts static electricity from the functional area to the bonding area, thereby preventing accumulation and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a light-emitting substrate with functional elements is manufactured, then display functionality is achieved, but static electricity accumulates during manufacturing causing damage to functional areas
Solution Approach 1:
The substrate is divided into distinct functional area and bonding area, with the electrostatic pathway strategically routed to connect these regions. The pathway is segmented into portions located in different areas, allowing static electricity to be conducted from the functional area through the bonding area to external grounding points, preventing accumulation and damage to sensitive functional elements.
Solution Approach 2:
The electrostatic pathway acts as an intermediary conductor between the functional area and external grounding points. This dedicated conductive pathway provides a controlled route for static electricity to flow safely, preventing direct discharge that would damage sensitive functional elements while maintaining the integrity of the display functionality.
2Reliability
If electrostatic pathway is added to substrate, then anti-static ability is improved, but device complexity increases
Solution Approach 1:
The electrostatic pathway is designed to serve multiple functions: it provides electrostatic discharge protection, maintains electrical connectivity between bonding and functional areas, and can be integrated with existing substrate conductive layers. This multi-functionality reduces the need for separate dedicated anti-static structures, thereby limiting the increase in device complexity.
Solution Approach 2:
The electrostatic pathway is merged with the existing substrate conductive structure, sharing common conductive layers and routing paths where possible. The pathway is combined with the bonding area and functional area structures, creating an integrated design that adds anti-static capability without requiring entirely separate complex structures.
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 solution effectively manages static electricity, preventing damage to the light-emitting devices and driver chips, and improving the anti-static ability of the substrate, thus enhancing manufacturing yield and display performance.
Implementation Method 1
the first electrostatic pathway is configured to conduct static electricity from the functional area to the bonding area
Data Source
AI summary
A light emitting substrate has a functional area and a bonding area. The bonding area and the functional area are arranged along a first direction in sequence. The light-emitting substrate includes a substrate, a plurality of functional element groups, and a first electrostatic pathway. The plurality of functional element groups are located on a side of the substrate and located in the functional area. The first electrostatic pathway is located on a same side of the substrate with the plurality of functional element groups. The first electrostatic pathway is electrically connected to the bonding area, a portion of the first electrostatic pathway is located in the functional area, and the first electrostatic pathway is configured to conduct static electricity from the functional area to the bonding area.