Display Device Gaze-Based Luminance Control
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Solution Overview
Problem
Display devices face challenges in efficiently adjusting luminance to conserve power and enhance visibility, particularly in scenarios where user gaze is not uniformly distributed, leading to suboptimal power usage and visibility issues.
Innovation Solution
A display device equipped with an eye tracker and a timing controller that adjusts luminance based on the user's gaze point, decreasing luminance in regions farther from the gaze and increasing it closer to the gaze point, while also considering environmental illuminance and user-set luminance ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If luminance is uniformly maintained across the entire display panel, then visibility is ensured, but power consumption increases
Solution Approach 1:
The patent applies local quality by adjusting luminance differently across different regions of the display panel based on the user's gaze position. The gaze-point region maintains high luminance for visibility, while peripheral regions reduce luminance to save power, creating spatially varying quality characteristics that optimize both visibility and energy efficiency simultaneously
2Use of energy by moving object
If luminance is reduced in peripheral regions, then power consumption decreases, but visibility in those regions deteriorates
Solution Approach 1:
The patent implements dynamic luminance adjustment where the display system continuously monitors the user's gaze position and dynamically reallocates luminance resources. As the gaze point moves across the display, the high-luminance region dynamically follows the gaze position, ensuring that visibility is maintained wherever the user looks while minimizing overall power consumption through adaptive regional control
Data Source
AI summary
A display device includes: a display panel including pixels; an eye tracker configured to determine a gaze point on the display panel by tracking a gaze of a user; and a timing controller configured to determine a luminance variable region of the display panel based on the gaze point, and to decrease a luminance of the luminance variable region. The timing controller is configured to decrease the luminance of a point in the luminance variable region more as the point in the luminance variable region is farther from the gaze point.