Cascaded GOA Circuit for Partial Display Scanning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current gate driving circuits in display technology can only perform row-by-row scanning as a whole, leading to resource waste and high energy consumption, and are unable to support partial display or interrupt scanning, limiting their efficiency and flexibility.
Innovation Solution
A gate driving circuit with cascaded GOA units, each driving a row of pixels, where the starting and output sub-units are connected to specific control signals and power supplies, allowing for controlled scanning and partial display by adjusting control signals, enabling the circuit to start or stop scanning specific rows of pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the gate driving circuit operates as a whole to perform row-by-row scanning, then the display screen can display as a whole, but the circuit cannot support partial display and leads to resource waste and high energy consumption
Solution Approach 1:
The gate driving circuit is divided into multiple independently controllable GOA units, where each GOA unit can be selectively activated to drive specific row segments. This segmentation allows the circuit to operate only on the required portion of the display, enabling partial display functionality while reducing overall energy consumption compared to operating the entire circuit.
Solution Approach 2:
The patent introduces dynamic control signals (first control signal and second control signal) that can adjust the operating state of different GOA units in real-time. By dynamically enabling or disabling specific GOA units based on display requirements, the system adapts its operation to match actual needs, preventing energy waste on non-displayed regions.
2Productivity
If the gate driving circuit performs row-by-row scanning as a whole, then complete display coverage is achieved, but the scanning cannot be interrupted and leads to resource waste
Solution Approach 1:
Instead of always performing complete row-by-row scanning across all GOA units, the patent enables partial scanning by activating only the necessary GOA units based on control signals. This partial action approach maintains display efficiency for the required regions while avoiding energy waste on regions that don't require scanning.
Solution Approach 2:
Different GOA units can be placed in different operational states (active or inactive) based on local display requirements. The control circuit selectively enables specific GOA units, creating local quality variations in the driving circuit operation, which optimizes energy usage by scanning only where needed.
3Adaptability or versatility
If all GOA units are activated for complete scanning, then full display coverage is achieved, but resource waste occurs when only partial display is needed
Solution Approach 1:
The gate driving circuit is segmented into multiple independently controllable GOA units, each capable of being activated or deactivated separately. This segmentation provides the flexibility to activate only the necessary units for the current display task, preventing resource waste while maintaining adaptability for various display scenarios.
Solution Approach 2:
Each GOA unit is designed with universal functionality to drive pixel rows, but with independent control capability. This multi-functionality allows the same circuit architecture to serve both complete display and partial display needs, adapting to different resource requirements without sacrificing versatility.
Data Source
AI summary
There is provided a gate driving circuit including cascaded Gate Driver On Array (GOA) units, each GOA unit drives a row of pixels and includes a starting sub-unit, an output sub-unit and an output terminal, in the GOA unit at a first stage, the starting sub-unit is coupled with a starting signal, a first control signal, a second control signal and a constant voltage potential, and the output sub-unit is coupled with a first clock signal and a first power supply signal; in the GOA unit at an nth stage, the starting sub-unit is coupled with the starting signal, the first control signal, the second control signal and the output terminal of the GOA unit at an (n−1)th stage, the output sub-unit is coupled with the first power supply signal and the output terminal of the GOA unit at an (n+1)th stage, n is an integer greater than 1.