Electronic Substrate ESD Structure for Discharge Testing

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Solution Overview

Problem

Electronic components in devices are prone to damage from electrostatic discharge during testing, leading to decreased production yield and increased costs.

Innovation Solution

Incorporating an electrostatic protection structure between a test terminal and the edge of the substrate, which directs electrostatic discharge away from sensitive components, reducing potential damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If electrostatic discharge test is performed to confirm electrostatic protection capability, then reliability is improved, but electronic components may be damaged causing productivity to decrease

Engineering Contradiction:

Improveelectrostatic protection capabilityVSAvoidproduction yield

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent introduces an electrostatic protection structure as an intermediary element positioned between the test terminal and the electronic components in the work area. This mediator structure receives and dissipates electrostatic discharge energy, preventing direct damage to sensitive electronic components while allowing the ESD test to proceed, thus maintaining both reliability assessment and production yield

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The substrate is divided into distinct functional zones: a work area containing electronic components and a peripheral area containing the test terminal and electrostatic protection structure. This segmentation allows the ESD testing function to be separated from the sensitive component area, enabling safe testing without compromising component integrity

Inventive Principle:

Principle #1Segmentation

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 electrostatic protection structure mitigates damage to electronic components during discharge testing, enhancing the reliability and reducing production costs by maintaining component integrity.

Implementation Method 1

the current generated in the electrostatic discharge test may cause damage to the electronic components

Methodology Applied

Scientific EffectElectrostatic Discharge: Electrostatic Discharge

Implementation Method 2

an electrostatic protection structure disposed on the peripheral area, wherein the electrostatic protection structure is located between the test terminal and an edge of the substrate

Methodology Applied

Scientific EffectElectrical Conduction: Conduction (electrical)

Data Source

PatentUS20250267950A1Electronic device

Publication Date: 2025.08.21 INNOLUX CORP

AI summary

An electronic device includes: a substrate including a work area and a peripheral area, wherein the peripheral area surrounds the work area; a test terminal disposed on the peripheral area; and an electrostatic protection structure disposed on the peripheral area; wherein in a top view direction, the electrostatic protection structure is located between the test terminal and an edge of the substrate.