Display Driving Controller for Static-Video Regional Refresh
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Solution Overview
Problem
Existing display devices struggle to efficiently manage the display of static images and videos, leading to inefficiencies in power consumption and image quality, particularly when both types of content are presented simultaneously.
Innovation Solution
A display device that divides the display area into regions for static images and videos, driving the static image area at a lower frequency and the video area at a higher frequency, with gradual adjustments in frequency to minimize power consumption and maintain image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the entire display area is driven at a high frequency to ensure smooth video display, then video quality is improved, but power consumption increases
Solution Approach 1:
The display area is divided into multiple regions including a video display region and a static image display region. Each region is independently controlled with different refresh frequencies, allowing the video region to be driven at high frequency for smooth motion while the static image region operates at low frequency to reduce power consumption.
Solution Approach 2:
Different parts of the display area are assigned different quality characteristics in terms of refresh frequency. The video display region receives high-frequency updates for smooth motion rendering, while the static image display region uses low-frequency updates since visual persistence maintains image quality, thereby optimizing power consumption locally.
2Use of energy by moving object
If the entire display area is driven at a low frequency to reduce power consumption, then energy usage decreases, but video display quality deteriorates
Solution Approach 1:
The display area is segmented into video display region and static image display region, allowing differential frequency control. The video region maintains high refresh frequency for quality display while the static image region operates at low frequency for power savings.
Solution Approach 2:
The patent applies local quality optimization by assigning high refresh frequency to the video display region where motion smoothness is critical, while the static image display region uses low refresh frequency since human visual persistence maintains perceived quality, thus achieving overall power optimization without sacrificing video quality.
3Use of energy by moving object
If the display area is divided into multiple regions with different driving frequencies, then power consumption is optimized, but device complexity increases
Solution Approach 1:
The display area is divided into distinct regions (video display region, static image display region, and optionally a border region) with different refresh frequencies. This segmentation enables targeted power optimization while maintaining manageable control complexity through clear regional definitions and independent frequency control.
Data Source
AI summary
A display device is disclosed that includes a pixel component configured to output an image based on a first driving frequency, a scan driver configured to sequentially provide a scan signal to each pixel row in each frame based on the first driving frequency, and a driving controller configured control the scan driver such that, in the case where image data includes data corresponding to a static image, a display area is divided into a first area for the static image, and a second area for a video, and the first area is driven at a second driving frequency, and the second area is driven at a third driving frequency. The driving controller may control the scan driver such that a driving frequency corresponding to the first area is reduced to the second driving frequency, and a driving frequency corresponding to the second area is increased to the third driving frequency.