OLED Display Driving Apparatus with Distance-Based Gain Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing OLED display devices face challenges in reducing power consumption while maintaining image quality, as increasing the current flowing through each pixel to enhance luminance leads to higher power consumption.
Innovation Solution
A display driving apparatus that calculates distances between pixels and a central pixel, divides the frame into interest and non-interest areas, and adjusts pixel gains accordingly, with constant gains in the interest area and decreased gains in the non-interest area proportional to the distance from the central pixel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the amount of current flowing through the OLED of each pixel is increased to enhance luminance, then the luminance of the display panel is improved, but the power consumption of the OLED device is increased
Solution Approach 1:
The patent applies different luminance levels to different regions of the display panel based on their importance. The central region (interest area) maintains high luminance with constant gain, while peripheral regions (non-interest areas) have reduced luminance with decreased gain proportional to their distance from the center. This local differentiation allows the display to prioritize power consumption in visually critical areas while reducing it in less important areas.
Solution Approach 2:
The display panel is segmented into two distinct regions: an interest area (central region) and non-interest areas (peripheral regions). This segmentation is achieved by dividing the frame based on pixel distances from the central pixel, allowing independent control of luminance characteristics in each region to optimize the balance between perceived image quality and power consumption.
2Use of energy by moving object
If the gain of pixels in non-interest areas is decreased to reduce power consumption, then the power consumption is reduced, but the image quality in those areas deteriorates
Solution Approach 1:
The patent applies different quality standards to different regions of the display. The central region maintains high image quality with constant gain, while peripheral regions accept reduced image quality with decreased gain. This approach recognizes that human visual perception prioritizes the central viewing area, allowing quality reduction in peripheral areas without significantly impacting overall perceived image quality while achieving power savings.
3Reliability
If the gain of pixels in interest area is maintained at constant value to preserve luminance, then the image quality in central region is maintained, but the power consumption cannot be reduced in that area
Solution Approach 1:
The patent prioritizes maintaining high image quality in the central region (interest area) by applying constant gain to pixels in this region. This ensures that the most visually important area maintains optimal luminance and image quality. The trade-off is accepted that this region consumes more power, but this is justified by its visual importance to the overall viewing experience.
Solution Approach 2:
The display is segmented into interest and non-interest areas, allowing the system to concentrate power consumption in the visually critical central region while reducing it in peripheral regions. This segmentation strategy optimizes the overall power consumption by strategically allocating power resources to where they provide the most visual benefit.
Data Source
AI summary
Disclosed is a display driving apparatus. The display driving apparatus includes a distance calculator configured to calculate, for a plurality of pixels constituting a frame input to a display panel, distances between respective pixels and a central pixel, a gain calculator configured to divide the frame constituted by the plurality of pixels into an interest area and a non-interest area using the distances between respective pixels and the central pixel, and to determine a gain of each pixel in accordance with an area where the pixel is disposed, and a gain applier configured to generate pixel data using the gain of each pixel. Gains of the pixels disposed in the interest area have a constant value. Gains of the pixels disposed in the non-interest area are decreased in proportion to distances between the pixels in the non-interest area and the central pixel, respectively.