Gate Driver Circuit for Accurate X-ray Detection
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Solution Overview
Problem
Existing X-ray detection systems face challenges in accurately reading X-rays due to the need for precise control of charge generation periods in pixels, which is different from typical display panels, and require a specialized method of driving gate and data lines to ensure accurate X-ray detection.
Innovation Solution
A gate driver circuit with a shift register system that outputs specific scanning signals to gate lines, including a first-level signal for discharging electrical charges before X-ray incidence and a second-level signal during incidence, ensuring accurate X-ray reading by maintaining signals at an off level during X-ray exposure, and is integrated within the X-ray detection panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a gate driver circuit outputs scanning signals continuously to gate lines, then the pixels can be driven continuously, but electrical charges cannot be discharged before X-ray incidence, leading to inaccurate X-ray reading
Solution Approach 1:
The gate driver circuit outputs a first-level scanning signal to all gate lines simultaneously before X-ray incidence to discharge electrical charges from pixels in advance. This preliminary action ensures that pixels are reset to a known state before X-ray exposure, enabling accurate X-ray reading without continuous driving during the exposure period.
2Measurement precision
If the gate driver circuit maintains scanning signals at on level during X-ray incidence, then pixels remain active, but charge generation periods cannot be controlled accurately
Solution Approach 1:
The gate driver circuit uses periodic scanning signals with different levels: a first-level signal before X-ray incidence to activate pixels and discharge charges, and a second-level signal during X-ray incidence to maintain pixel activation. This periodic action with distinct signal levels enables precise control of charge generation periods while keeping operation simple through automated signal sequencing.
3Device complexity
If the gate driver circuit is integrated within the X-ray detection panel, then system complexity is reduced, but the circuit design becomes more constrained
Solution Approach 1:
The gate driver circuit is integrated within the X-ray detection panel by merging the scanning signal generation functionality into the panel structure. The circuit includes transistors connected to gate lines and control nodes, with signal output terminals integrated into the panel architecture. This merging reduces overall system complexity while the modular transistor-based design facilitates manufacturing through standard semiconductor fabrication processes.
Data Source
AI summary
An X-ray detection panel and a gate driver circuit driving gate lines disposed on the X-ray detection panel are discussed. A high-level scanning signal is output to the gate lines before X-rays are input to the X-ray detection panel, and a low-level scanning signal is input to the gate lines during an X-ray incidence period in which electrical charges are generated in pixels. Gate driving for accurate X-ray reading is enabled. The gate driver circuit is provided as a gate-in-panel (GIP) using transistors operating in response to an X-ray incidence signal. An X-ray detection panel that is able to accurately read X-rays can be provided.