Display Pixel Circuit Layout for High Resolution Voltage Compensation
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Solution Overview
Problem
Existing display devices face challenges in achieving high resolution due to limitations in pixel design and voltage compensation errors.
Innovation Solution
A pixel design incorporating a first transistor, second transistor, capacitors, and a light-emitting element, with specific transistor configurations and connections to reduce voltage errors and enable high resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional pixel design is used, then the device complexity is low, but the resolution is limited and voltage compensation errors occur
Solution Approach 1:
The pixel circuit is divided into multiple functional blocks: a first transistor for generating driving current, a second transistor for receiving write gate signals, capacitors for voltage compensation, and a light-emitting element. This segmentation allows each component to perform its specific function efficiently, achieving high resolution while maintaining manageable complexity through modular design
Solution Approach 2:
The capacitor in the pixel circuit serves multiple functions: it compensates for threshold voltage shifts, stores charge for the light-emitting element, and maintains voltage stability during operation. This multi-functionality reduces the need for additional separate components, thereby improving resolution without proportionally increasing device complexity
2Reliability
If driving current directly influences the capacitor, then the circuit is simpler, but voltage errors increase
Solution Approach 1:
A capacitor is introduced as an intermediary element between the driving current source and the voltage compensation node. This capacitor isolates the driving current path from the voltage compensation path, preventing direct influence and reducing voltage errors while maintaining circuit functionality through a straightforward configuration
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 design achieves high resolution by minimizing voltage errors and reducing the influence of driving current on capacitors, thereby enhancing display performance.
Implementation Method 1
a light-emitting element for emitting light by receiving the driving current
Data Source
AI summary
A pixel includes a first transistor for generating a driving current, and including a control electrode connected to a first node, a first electrode, and a second electrode connected to a second node, a second transistor including a control electrode for receiving a write gate signal, a first electrode for receiving a data voltage, and a second electrode connected to a third node, a first capacitor including a first electrode connected to the first node, and a second electrode connected to the third node, a second capacitor including a first electrode, and a second electrode connected to the third node, and a light-emitting element for emitting light by receiving the driving current.