Display Panel Timing Controller Frequency Segmentation
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Solution Overview
Problem
Existing display apparatuses fail to adequately reduce power consumption when displaying moving images, as methods to minimize power consumption during static image display are not effective for moving images.
Innovation Solution
A display apparatus with a timing controller that adjusts driving frequencies based on image type, using high frequencies for video images and low frequencies for static images, and employs gate masking signals to block pulses to gate lines corresponding to static images, allowing only video image gate signals to be outputted, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If the display panel is driven at a low frequency to reduce power consumption during static image display, then power consumption is reduced, but the display cannot properly handle moving images
Solution Approach 1:
The display panel is divided into multiple display areas (first display area and second display area) with separate gate line groups. Each area can be driven at different frequencies independently, allowing the first area to run at low frequency for power saving while the second area runs at high frequency to handle moving images, thus resolving the contradiction between power consumption and moving image capability
Solution Approach 2:
Different display areas are assigned different driving frequencies based on their content requirements. The first display area displaying static images operates at low frequency, while the second display area displaying moving images operates at high frequency. This local differentiation allows each region to operate optimally for its specific function, balancing power consumption and image quality
2Adaptability or versatility
If the display panel is driven at a high frequency to handle moving images, then moving images are displayed properly, but power consumption increases
Solution Approach 1:
The display panel is segmented into multiple independently controllable display areas. This allows high-frequency driving only in the second display area where moving images are displayed, while the first display area operates at low frequency. The segmentation enables selective high-frequency operation only where needed, reducing overall power consumption while maintaining moving image capability
Solution Approach 2:
High driving frequency is applied locally only to the second display area that requires it for moving image display, while the first display area operates at low frequency. This localized high-frequency operation ensures proper moving image display in relevant areas without unnecessarily increasing power consumption across the entire display panel
3Area of stationary object
If gate clock pulses are outputted to all gate lines, then complete display coverage is achieved, but power consumption increases due to unnecessary driving of static image areas
Solution Approach 1:
The gate line groups are segmented into first and second gate line groups corresponding to different display areas. The timing controller selectively outputs gate clock pulses to only the second gate line group for the second display area when moving images are detected, while the first gate line group operates at lower frequency. This segmentation-based selection reduces unnecessary gate driving and associated power consumption
Solution Approach 2:
Instead of outputting gate clock pulses to all gate lines (excessive action), the timing controller applies pulses only to the necessary second gate line group (partial action) when moving images are displayed in that area. This partial action approach maintains adequate display coverage for moving images while eliminating wasted energy from driving static image areas at high frequency
Data Source
AI summary
A display apparatus includes a display panel and a timing controller. The display panel includes a first display area on which a first gate line group is disposed and a second display area on which a second gate line group is disposed. The second gate line group is disconnected from the first gate line group. The timing controller is configured to determine a first driving frequency of the first display area based on first image data displayed on the first display area and a second driving frequency of the second display area based on second image data displayed on the second display area.