Gate Driver Driving Capability Adjustment for TFT Display Splitting-Screen
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Solution Overview
Problem
In thin film transistor (TFT) displays, the varying lengths of wirings between gate drivers and TFT array regions result in differences in drive control signal rising times, leading to unbalanced driving capabilities and the 'splitting-screen' phenomenon due to differences in impedance and voltage pulse signal delays.
Innovation Solution
A gate driver system with a driving capability detection module and adjustment module, using MOS transistors and digital potentiometers, detects and adjusts the rising time of gate drive signals to ensure consistent driving capabilities across different TFT array regions by outputting feedback signals and adjustment instructions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If gate drivers are arranged at different locations to drive different TFT array regions, then the display panel can be driven with higher resolution, but the wiring lengths and impedances differ causing unbalanced driving capabilities
Solution Approach 1:
The patent applies local quality by configuring each gate driver with individually adjusted driving capability parameters. The controller sends different adjustment instructions to different gate drivers based on their specific wiring conditions and positions, making each gate driver adapt to its local characteristics rather than using a uniform configuration for all gate drivers.
Solution Approach 2:
The patent changes the driving capability parameters of gate drivers through digital adjustment. The controller determines adjustment instructions based on detected driving capabilities and wiring characteristics, then modifies parameters such as output voltage levels or pulse widths to compensate for differences in wiring lengths and impedances, achieving uniform driving capability across all gate drivers.
2Area of stationary object
If wiring lengths between gate drivers and TFT array regions are different, then different regions can be covered, but the rising times of drive control signals become unbalanced affecting driving capability
Solution Approach 1:
The patent implements feedback by having the controller detect the actual driving capability of each gate driver and use this information to determine appropriate adjustment instructions. This closed-loop approach allows the system to compensate for wiring variations by adjusting each gate driver's parameters based on measured performance rather than relying on theoretical calculations alone.
Solution Approach 2:
The patent applies preliminary action by pre-configuring adjustment instructions for each gate driver before normal operation. The controller determines and stores the optimal adjustment parameters based on detected characteristics, so that when gate drivers are activated, they already have the correct parameters set to compensate for their specific wiring conditions, avoiding the need for real-time adjustment during operation.
3Adaptability or versatility
If gate drivers have different driving capabilities due to wiring differences, then more flexible layout is possible, but splitting-screen phenomenon occurs reducing display quality
Solution Approach 1:
The patent applies local quality by allowing each gate driver to have customized driving parameters tailored to its specific position and wiring characteristics. This enables flexible layout arrangements while maintaining consistent display quality, as each gate driver is optimized for its local conditions rather than requiring uniform parameters that would constrain layout options.
Solution Approach 2:
The patent changes driving parameters dynamically based on gate driver position and wiring characteristics. By adjusting parameters such as output voltage, current, or pulse timing for each gate driver individually, the system can accommodate flexible layouts with varying wiring lengths while preventing the splitting-screen phenomenon that would result from unbalanced driving capabilities.
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 system ensures uniform driving capabilities for drive control signals received by TFT array regions, preventing the 'splitting-screen' phenomenon by compensating for wiring delays and manufacturing fluctuations, thereby improving display reliability.
Implementation Method 1
a push-pull output circuit comprising a first MOS transistor and a second MOS transistor that are connected in series
Data Source
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AI summary
The present application provides a gate driver and a configuration system and configuration method thereof, and belongs to the technical field of TFT array driving of a thin film transistor (TFT) display panel. The gate driver of the present application is used for providing a gate drive signal for a TFT array substrate, and comprises at least a drive capability detection module and a drive capability adjustment module. The configuration system of the present application is configured to configure the driving capabilities of a plurality of gate drivers, and comprises a controller provided outside the plurality of gate drivers. The driving capability of the gate driver of the present application becomes adjustable and configurable. The well balance of the drive capabilities of the drive control signals received by the different TFT array regions driven by the plurality of gate drivers configured by the configuration system of the present application can avoid the occurrence of a splitting-screen phenomenon.