Cascaded Display Driving Circuit for Selective Row Scanning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display technologies face challenges in achieving low power consumption and long standby time, particularly in scenarios requiring rapid resolution switching or local display, which leads to increased power consumption and reduced standby time.
Innovation Solution
A driving circuit with cascaded driving units, including start row control, latch, and start row trigger modules, allows for flexible scanning directions and resolution switching by specifying and triggering scanning start and end rows, reducing unnecessary pixel updates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If full-screen scanning is performed continuously, then display coverage is complete, but power consumption increases and standby time decreases
Solution Approach 1:
The patent implements periodic scanning by controlling the scanning circuit to alternately perform full-screen scanning and standby operations. During standby, only necessary regions are scanned while other regions remain inactive, creating a periodic on-off pattern that reduces average power consumption while maintaining display functionality when needed.
Solution Approach 2:
The patent applies local quality by dividing the display screen into different scanning regions with different operational states. The scanning circuit can selectively activate specific local regions for scanning while keeping other regions in standby mode, allowing different parts of the system to have different operational characteristics based on local requirements.
2Adaptability or versatility
If resolution switching is performed frequently, then display adaptability improves, but power consumption increases due to unnecessary pixel updates
Solution Approach 1:
The patent implements local quality by enabling different regions of the display to operate at different resolutions simultaneously. The scanning circuit can selectively apply high-resolution scanning to specific regions while using lower resolution or standby mode in other regions, allowing resolution switching adaptability without requiring all pixels to update simultaneously, thus reducing overall power consumption.
Solution Approach 2:
The patent applies partial action by performing pixel updates only in regions where resolution changes are actually needed, rather than updating the entire screen. The scanning circuit identifies and activates only the necessary portions of the display for resolution switching, avoiding excessive updates in regions where full resolution is not required, thereby reducing power consumption while maintaining display adaptability.
Data Source
AI summary
The present disclosure discloses a driving circuit and a display device. The driving circuit includes a plurality of driving units arranged in cascade, where each of the plurality of driving units is electrically connected to one or more rows of sub-pixels, the driving unit includes: a start row control module configured to specify one of the rows of sub-pixels as a switching start row under a control of a start row specified signal output by the start row specified signal line; a latch module configured to latch the start row specified signal; and a start row trigger module configured to trigger the switching start row to start scanning under a control of a trigger signal output by the trigger signal line.