Display Signal Transfer Layout With Shaped ESD Protection Circuit
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Solution Overview
Problem
Conventional display apparatuses suffer from reduced display quality due to circuit damage caused by electrostatic discharge.
Innovation Solution
Incorporation of an electrostatic discharge protective circuit with a 'V' or 'U' shape, including first and second protective transistors, and a signal transfer line connected to a contact portion, which minimizes circuit damage by channeling static discharge to ground.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an electrostatic discharge protective circuit is added to minimize circuit damage, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent introduces protective transistors as intermediary components between the signal transfer line and the display unit. These transistors act as mediators that divert electrostatic discharge current away from sensitive circuit elements, thereby protecting the circuit while maintaining normal signal transmission functionality.
Solution Approach 2:
The patent extracts the electrostatic discharge protection function from the main circuit by adding separate protective transistors and conductive lines that are independent from the primary signal transmission path. This allows the protection mechanism to operate independently without interfering with normal display operations.
2Reliability
If protective transistors and conductive lines are added to channel静电 discharge, then circuit damage is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent merges the protective transistors with the existing pixel circuit structure, where the protective transistors share the same substrate and fabrication process. The conductive lines are integrated into the existing interconnect architecture, allowing simultaneous fabrication of both protective and signal transmission components without requiring separate manufacturing steps.
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
Effectively reduces the risk of circuit damage from electrostatic discharge, maintaining display quality and reliability.
Implementation Method 1
an electrostatic discharge protective circuit having a first end connected to the first conductive line and a second end connected to the second conductive line
Data Source
AI summary
A display apparatus including a display area and a non-display area comprises a display unit disposed in a display area and including a light-emitting element and a pixel circuit, a common voltage supply line arranged in a non-display area surrounding the display area, a first conductive line arranged between the display unit and the common voltage supply line, a second conductive line arranged between the first conductive line and the common voltage supply line, an electrostatic discharge protective circuit having a first end connected to the first conductive line and a second end connected to the second conductive line and including a first protective transistor and a second protective transistor, and a signal transfer line including a contact portion in contact with the electrostatic discharge protective circuit.