Display Driving Device with Variable Rate Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In head-mounted displays, the limited visual field and increased power consumption due to high-definition image demands make it difficult to reduce electric power consumption while maintaining image quality, especially in non-visual recognition areas where users cannot perceive images.
Innovation Solution
A display driving device with a drive circuit that differentiates the driving rate between image visual recognition areas and non-image visual recognition areas, reducing power consumption by lowering the driving rate in non-image areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the driving frequency is raised to advance high definition, then image quality is improved, but electric power consumption increases
Solution Approach 1:
The display screen is divided into multiple regions: a first region (visual recognition area) where users can clearly see images, and a second region (non-visual recognition area) at the ends where users cannot visually recognize images. Different driving frequencies are applied to each region, with the first region receiving a higher driving frequency for high definition and the second region receiving a lower driving frequency to reduce power consumption.
Solution Approach 2:
Different quality levels are applied to different parts of the display screen based on visual recognition characteristics. The first region maintains high definition with a higher driving frequency since it falls within the user's visual field, while the second region uses a lower driving frequency since it is outside the visual recognition range, optimizing both image quality and power consumption locally.
2Manufacturing precision
If high-definition images are displayed in non-visual recognition areas, then image quality is improved, but electric power consumption increases
Solution Approach 1:
The patent extracts and removes the unnecessary high-definition display requirement from the second region (non-visual recognition area). Since users cannot visually recognize images in this region, high-definition display is not needed, and the system removes this requirement to reduce power consumption while maintaining high definition only in the first region where it is actually perceived.
3Use of energy by moving object
If the driving rate is reduced in non-image visual recognition areas, then electric power consumption is reduced, but image quality may be compromised
Solution Approach 1:
Different quality levels are applied to different parts of the display screen based on visual recognition characteristics. The first region maintains high definition with a higher driving frequency since it falls within the user's visual field, while the second region uses a lower driving frequency since it is outside the visual recognition range, optimizing both image quality and power consumption locally.
Data Source
AI summary
A display apparatus includes a source driver and a gate driver which drive a display section such that pixel signals are selectively supplied to a plurality of pixels provided in the display section. The display section includes a non-image visual recognition area, in which it is not possible for a visual recognizer to visually recognize an image to be displayed, and an image visual recognition area in which it is possible for the visual recognizer to visually recognize the image to be displayed. The source driver and the gate driver lower a driving rate which drives the non-image visual recognition area further than a driving rate which drives the image visual recognition area.