Display Panel Layout With Light-Transmitting Areas for Under-Display Sensors
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Solution Overview
Problem
The challenge of implementing a full-screen display in smartphones is hindered by the presence of a front camera, which reduces light transmittance and degrades the performance of cameras and sensors due to the placement of pixels in the imaged area.
Innovation Solution
A display panel design with a first area of high-resolution pixels and a second area with lower resolution pixels, incorporating light-transmitting areas and a polarizing plate with first light-transmitting patterns to enhance light transmittance, allowing sensors to be placed under the second area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If pixels are disposed in the imaged area to enable full-screen display, then screen coverage is improved, but light transmittance is reduced and camera/sensor performance is degraded
Solution Approach 1:
The display panel is divided into a first area with high-resolution pixels and a second area with low-resolution pixels. The second area is further segmented into pixel regions and light-transmitting areas, allowing light to pass through to sensors while maintaining display functionality. This segmentation enables simultaneous achievement of full-screen coverage and adequate light transmittance for camera/sensor operations.
Solution Approach 2:
Different regions of the display panel are assigned different functional qualities: the first area provides high-resolution display, while the second area provides both display and light transmission functions. Within the second area, pixel regions provide display output while light-transmitting areas allow light passage to sensors. This local differentiation resolves the contradiction between screen coverage and light transmittance.
2Area of stationary object
If pixels are disposed in the imaged area, then full-screen display is achieved, but image quality and sensor performance are degraded due to reduced light transmittance
Solution Approach 1:
The second area is segmented into distinct pixel regions and light-transmitting areas. The light-transmitting areas are specifically designed to allow sufficient light passage to sensors while the pixel regions maintain display functionality. This segmentation ensures that sensor performance is not degraded despite the presence of pixels in the imaged area.
Solution Approach 2:
The light-transmitting areas act as intermediaries between the display structure and the sensors. These areas allow light to pass through the display panel to reach the sensors positioned behind the imaged area, ensuring adequate light transmission for sensor operation while maintaining the full-screen display configuration.
3Ease of manufacture
If the polarizing plate has uniform structure, then manufacturing is simplified, but light transmittance in the imaged area is insufficient
Solution Approach 1:
The polarizing plate is designed with different structures in different regions: a first polarizing plate for the first area and a second polarizing plate with light-transmitting patterns for the second area. This local differentiation allows the polarizing plate to provide adequate light transmittance in the imaged area while maintaining manufacturability through standardized production processes for each region type.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enables improved light transmittance and maintains image quality by compensating for reduced resolution, enabling a full-screen display without compromising camera or sensor performance.
Implementation Method 1
a polarizing plate including a plurality of first light-transmitting patterns disposed in the plurality of light-transmitting areas, wherein, in the polarizing plate, an area in which the first light-transmitting patterns are formed has a higher light transmittance than the remaining area
Data Source
AI summary
Embodiments disclose a display panel and a display device including the display panel. The display panel includes a first area in which a plurality of first pixels are disposed, a second area including a pixel area in which a plurality of second pixels are disposed and a plurality of light-transmitting areas disposed between the plurality of second pixels, and a polarizing plate including a plurality of first light-transmitting patterns disposed in the plurality of light-transmitting areas, wherein, in the polarizing plate, an area in which the first light-transmitting patterns are formed has a higher light transmittance than a remaining area in which the first light-transmitting patterns are not formed.