Display Control Around Under-Display Optical Sensors for Brightness Uniformity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The integration of optical sensors under the display in electronic devices can lead to reduced resolution and brightness in the display area, causing a difference in visibility due to non-pixel regions, which affects the overall display quality.
Innovation Solution
The implementation of a display control method that adjusts pixel density and brightness levels in regions corresponding to optical sensor areas, using a processor to identify and configure appropriate brightness levels for these regions based on pixel densities and thresholds, ensuring uniform visibility across the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If optical sensors are disposed under the display, then the screen expansion is improved, but the resolution and brightness in the sensor region are reduced
Solution Approach 1:
The display is divided into multiple regions: a first region with first pixel density and a second region with second pixel density. The second region corresponds to the optical sensor disposition area and has reduced pixel density to allow sensor integration, while the first region maintains normal pixel density for high-quality display.
Solution Approach 2:
Different regions of the display are assigned different pixel densities based on their functional requirements. The region under the optical sensor has reduced pixel density to accommodate the sensor, while other regions maintain full pixel density for optimal display quality.
2Area of stationary object
If optical sensors are disposed under the display, then the screen expansion is improved, but the brightness uniformity is reduced
Solution Approach 1:
The display controller dynamically adjusts the brightness level of different regions based on the content being displayed and the sensor requirements. The brightness of the second region is controlled to be lower than or equal to the first region to compensate for the reduced pixel density and maintain overall brightness uniformity.
Solution Approach 2:
The brightness level parameter is changed for different display regions. The display controller sets different brightness levels for the first region and second region, adjusting the luminance output to compensate for the reduced pixel density in the sensor region and maintain visual uniformity.
3Area of stationary object
If optical sensors are disposed under the display, then the screen expansion is improved, but the visibility difference in the display is increased
Solution Approach 1:
Different regions are assigned different quality characteristics appropriate to their function. The first region maintains full pixel density for high-quality display content, while the second region has reduced pixel density optimized for sensor operation, with brightness compensation to minimize visual impact.
Solution Approach 2:
The reduced pixel density in the second region, which initially causes visibility differences, is compensated through brightness control. The display controller adjusts the brightness level to ensure that the overall visual appearance remains uniform, converting the potential harm of reduced resolution into a manageable parameter through optical compensation.
Data Source
AI summary
An electronic device is provided. The electronic device includes a display, an optical sensor disposed below the display, and at least one processor, wherein the display includes a first region having a first pixel density and a second region having a second pixel density less than the first pixel density and corresponding to the disposed region of the optical sensor, the at least one processor determines a second brightness level for the second region on the basis of at least one among a first brightness level of the first region, the first pixel density, and the second pixel density when the first brightness level exceeds a predetermined threshold, identifies a third region, defined to include the second region, of the display along an edge of the first region, and sets the brightness of the second and third regions to the second brightness level.