Gate Driving Unit Partial Scanning for Display Power Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display devices face inefficiencies in driving methods, leading to longer driving times and increased power consumption due to the need for separate control signals and unnecessary scanning of all gate lines, even when only partial areas of the display panel undergo image changes.
Innovation Solution
The implementation of a display device with a gate driving unit comprising multiple gate driving integrated circuits, grouped into entities to operate independently based on group driving start and refresh signals, allowing for partial gate driving by scanning only the affected areas, thereby reducing unnecessary scanning and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate control signals are added for partitive driving, then the display panel can be divided into multiple driving areas, but the device complexity increases due to additional signal lines
Solution Approach 1:
The patent merges the control of multiple gate driving integrated circuits by using a single group driving start signal and a single group driving refresh signal that are commonly provided to all gate driving groups. This consolidation reduces the number of separate control signal lines needed while still enabling independent driving of different display areas through the gate driving groups themselves.
Solution Approach 2:
The group driving start signal and group driving refresh signal serve as universal control signals that can activate multiple gate driving groups simultaneously. These signals are designed to be commonly provided to all gate driving groups, allowing the same signal lines to control different display areas depending on which gate driving groups are activated, thus reducing overall signal line complexity.
2Reliability
If all gate lines are scanned sequentially, then complete image display is ensured, but the driving time increases unnecessarily when only partial areas have image changes
Solution Approach 1:
The patent segments the gate driving integrated circuits into multiple gate driving groups, where each group corresponds to a specific display area. This segmentation allows the system to selectively activate only the gate driving groups responsible for areas where image changes have occurred, rather than sequentially scanning all gate lines across the entire display panel, thus reducing driving time while maintaining complete image display.
Solution Approach 2:
The patent implements partial gate driving by activating only the necessary gate driving groups corresponding to areas with image changes. Instead of performing full scanning of all gate lines (excessive action), the system applies partial action by selectively driving only the required segments, thereby reducing driving time while ensuring complete display of changed image content.
3Reliability
If all gate lines are scanned sequentially, then complete image display is ensured, but power consumption increases due to unnecessary scanning
Solution Approach 1:
By segmenting gate driving integrated circuits into multiple gate driving groups corresponding to different display areas, the patent enables selective activation of only those groups needed for current frame updates. This segmentation reduces the number of actively driven gate lines, thereby lowering power consumption while ensuring complete display of image changes through the activated groups.
Solution Approach 2:
The patent applies partial action by activating only the necessary gate driving groups for areas with image changes rather than performing full scanning of all gate lines. This partial driving approach reduces energy consumption by minimizing the number of actively driven circuits while still ensuring complete and accurate display of the current frame image content.
Data Source
AI summary
Disclosure are a display device that provides effective partitive driving using an optimal signal line structure, and provides partial driving that effectively drive a partial area under the signal line structure and partial driving, and a gate driving method thereof.