Display Screen Scan-Signal Detection for Simultaneous Gate-Line Driving
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Solution Overview
Problem
Display screens exhibit grainy screens due to simultaneous starting of multiple gate lines caused by abnormal TFTs or abnormal clock signals in the gate driver on array circuit, resulting from environmental factors like temperature and electrostatic interference.
Innovation Solution
A detection unit connected to the gate driver on array circuit detects scan signals and outputs a feedback signal to determine if multiple gate lines are driven simultaneously, using transistors to differentiate between normal and abnormal signal outputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a gate driver on array circuit is used to generate scan signals, then the display unit can be driven to perform displaying, but abnormal TFTs or abnormal clock signals may cause multiple gate lines to be started simultaneously resulting in grainy screens
Solution Approach 1:
The detection unit is configured to detect scan signals output by the gate driver on array circuit before they are applied to drive the display unit. By performing preliminary detection, the system can identify abnormal scan signals that would cause multiple gate lines to be started simultaneously, preventing grainy screens from occurring
Solution Approach 2:
The detection unit provides feedback information about the scan signals to the control system. This feedback mechanism allows the system to monitor the quality of scan signals and take corrective actions when abnormalities are detected, ensuring reliable operation of the gate driver on array circuit
2Adaptability or versatility
If environmental factors like temperature and electrostatic field are present, then the display screen can operate in various conditions, but these factors may cause TFT abnormalities or clock signal abnormalities leading to simultaneous gate line activation
Solution Approach 1:
The detection unit continuously monitors scan signals and provides feedback about their quality. This feedback loop enables the system to detect and respond to signal abnormalities caused by environmental factors such as temperature variations and electrostatic fields, maintaining reliable operation across different operating conditions
Data Source
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AI summary
Embodiments of this application provide a display screen and an electronic device. The display screen includes: a display unit, a gate driver on array circuit connected to the display unit, and a detection unit connected to the gate driver on array circuit. The gate driver on array circuit is configured to: generate a scan signal, and drive, by using the scan signal, the display unit to perform displaying. The detection unit is configured to: detect the scan signal of the gate driver on array circuit, and obtain and output a feedback signal, where the feedback signal is configured to determine whether a plurality of gate lines of the display unit are driven simultaneously. The detection unit is connected to the gate driver on array circuit of the display screen, and the detection unit detects the scan signal of the gate driver on array circuit and outputs the feedback signal, where the feedback signal is configured to determine whether the plurality of gate lines of the display unit are driven simultaneously. Therefore, the following problem can be detected: When the plurality of gate lines of the display unit are started simultaneously based on scan signals output by a plurality of GoA units in the gate driver on array circuit, the display screen performs serial displaying, and a grainy screen is displayed.