Multi-Frequency Display Panel Driving Controller
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices operating at high driving frequencies experience increased power consumption, which negatively impacts energy efficiency and display quality.
Innovation Solution
A display device with a multi-frequency mode that divides the display panel into two areas, one operating at a higher frequency for moving images and the other at a lower frequency for still images, reducing power consumption while maintaining display quality by adjusting driving frequencies dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the driving frequency is increased to improve display quality for moving images, then the display quality is improved, but the power consumption increases
Solution Approach 1:
The display panel is divided into multiple regions with different driving frequencies. The first region (display area) operates at a first driving frequency while the second region (non-display area) operates at a second driving frequency. This allows different parts of the display device to have different operational characteristics, optimizing both display quality and power consumption by applying higher frequency only where needed for image display.
Solution Approach 2:
The display panel is segmented into a first region and a second region, each with independent driving frequency control. This segmentation enables the system to apply different driving frequencies to different functional areas, allowing the display area to maintain high quality while the non-display area consumes less power.
2Measurement precision
If the driving frequency is maintained at normal frequency for the entire display panel, then display quality is consistent, but power consumption increases unnecessarily in areas that do not require high frequency
Solution Approach 1:
Different driving frequencies are applied to different regions based on their functional requirements. The display area receives higher frequency for quality, while the non-display area receives lower frequency for energy savings, achieving local optimization without compromising overall system performance.
Solution Approach 2:
The driving frequency parameter is changed based on the functional requirements of different regions. By dynamically adjusting the frequency parameter for the non-display area to be lower than the display area, the system optimizes energy consumption while maintaining necessary display quality where required.
Data Source
AI summary
A driving controller divides a display panel into first and second display areas according to an operation mode, outputs a start signal indicating a start of one frame and a masking signal for indicating a start of the second display area, sets a basic driving frequency to a normal frequency when the operation mode is a normal frequency mode, sets the basic driving frequency to a frequency lower than the normal frequency when the operation mode is a multi-frequency mode, and outputs the start signal and the masking signal. The first display area operates at a first driving frequency and the second display area operates at a second driving frequency, and the scan driving circuit sequentially drives scan lines in synchronization with the start signal, and stops, in response to the masking signal, driving of some of the scan lines corresponding to the second display area.