Rear-Mounted Sensor Display Panel with Gradient Luminance
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Solution Overview
Problem
In mobile terminals and similar devices, sensors overlapping the display area reduce pixel density, causing image discontinuities and affecting display quality due to the overlap of sensor and display areas.
Innovation Solution
A display device design where sensors are placed on the rear surface of the display panel, allowing for a higher transmittance in the sensor area by varying pixel density and luminance across different areas, including a first display area, a second display area with higher transmittance, and a third area with gradually changing luminance, to minimize image discontinuities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensors are disposed on the front surface overlapping the display area, then sensor functionality is achieved, but pixel density is reduced causing image discontinuity
Solution Approach 1:
The patent moves sensors from the front surface (2D plane overlapping display) to the rear surface of the display panel, utilizing the third dimension (depth/layering) to resolve the conflict between sensor placement and display quality. This allows sensors to function while maintaining full pixel density in the display area.
Solution Approach 2:
Instead of placing sensors on the conventional front surface, the patent inverts the placement strategy by positioning sensors on the rear surface of the display panel, allowing light to pass through the display structure to reach the sensors, thereby eliminating the trade-off between sensor area and display area.
2Illumination intensity
If pixel density is reduced in sensor area to improve transmittance, then sensor transmittance is improved, but image discontinuity becomes visible
Solution Approach 1:
By relocating sensors to the rear surface, the patent eliminates the need to reduce pixel density in any display area. The dimensional shift allows full pixel density to be maintained throughout the front display surface while sensors receive sufficient light through the panel structure.
3Area of stationary object
If display area is maximized to improve visibility, then user visibility is improved, but sensor area is reduced
Solution Approach 1:
The patent resolves the area conflict by utilizing the rear surface dimension for sensor placement. This allows the front surface to be fully dedicated to display purposes while sensors are positioned on the opposite side, receiving light that passes through the display panel structure.
Solution Approach 2:
The display panel structure serves multiple functions simultaneously: it acts as the display surface on the front and as a light transmission medium to the sensors on the rear. This multi-functionality allows both display area maximization and sensor functionality to coexist.
Data Source
AI summary
The present disclosure relates to a display device and a method of driving the same. The display device includes a substrate, a display panel including a first display area including first pixels, a second display area including second pixels, and a third display area disposed between the first and second display areas and including third pixels, and a component disposed between the substrate and the display panel so as to overlap the second display area. Transmittance of the second display area is higher than transmittance of the first display area and transmittance of the third display area, and the third pixels are controlled such that a luminance gradually changes according to a distance from the second display area.