EDP Circuit Stabilizes Driving Transistor Threshold Voltage
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Solution Overview
Problem
Electronic devices with display functions face chromatic aberration due to shifts in the threshold voltage of semiconductor electronic elements, which existing solutions fail to adequately address.
Innovation Solution
Incorporating an electrostatic discharge protection circuit between the driving transistor and the semiconductor unit to discharge static electricity, preventing threshold voltage shifts and thereby avoiding chromatic aberration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an electrostatic discharge protection circuit is added to prevent threshold voltage shifts, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent introduces an electrostatic discharge protection circuit as an intermediary component between the driving transistor and the light-emitting unit. This protection circuit includes a first electrostatic discharge path connected to a first power supply voltage and a second electrostatic discharge path connected to a second power supply voltage, which serves as a mediator to discharge static electricity and prevent threshold voltage shifts without requiring fundamental changes to the existing display structure.
2Manufacturing precision
If the threshold voltage of semiconductor electronic elements shifts, then manufacturing precision is worsened, but adding protection circuits increases device complexity
Solution Approach 1:
The patent implements preliminary protection by incorporating the electrostatic discharge protection circuit into the pixel structure before threshold voltage shifts can occur. The protection circuit is pre-configured with electrostatic discharge paths that can immediately respond to and neutralize static electricity accumulation, preventing threshold voltage shifts before they affect display quality.
3Manufacturing precision
If existing solutions are used to address chromatic aberration, then manufacturing precision is improved, but object-generated harmful factors increase due to static electricity accumulation
Solution Approach 1:
The patent converts the harmful effect of static electricity accumulation into a beneficial discharge mechanism. By providing dedicated electrostatic discharge paths connected to power supply voltages, the circuit transforms potential harmful static charge into a controlled discharge process that protects the threshold voltage and maintains display quality, effectively turning a harmful factor into a protective mechanism.
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 discharge protection circuit effectively stabilizes the threshold voltage of the driving transistor, ensuring a stable driving current and preventing chromatic aberration in electronic devices with light-emitting units.
Implementation Method 1
the electrostatic discharge protection circuit is coupled to a node between the first terminal of the driving transistor and the first terminal of the semiconductor unit... may discharge the static electricity when the electronic device generates static electricity through the electrostatic discharge protection circuit
Data Source
AI summary
An electronic device is provided. The electronic device includes a driving transistor, a semiconductor unit and an electrostatic discharge protection (EDP) circuit. The semiconductor unit has a first terminal coupled to a first terminal of the driving transistor. The EDP circuit is coupled to a node between the first terminal of the driving transistor and the first terminal of the semiconductor unit.