OLED Display Partition Layout for Under-Display Camera Transmittance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In display devices with OLEDs, the placement of a camera behind the display area requires sufficient light transmittance in the overlapping region, which is compromised by the pixel circuit and lower electrode, leading to reduced light entry into the camera.
Innovation Solution
A display device configuration with a partition that compartmentalizes subpixels, allowing the organic layer and upper electrode to be selectively removed in the overlapping region, improving light transmittance by forming the display elements in regions overlapping the camera.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the camera is placed behind the display area to expand the display area, then the display area can be expanded to the area entirely overlapping the camera, but the light transmittance in the overlapping region is reduced due to the pixel circuit and lower electrode
Solution Approach 1:
The patent divides the display area into a first region (where display elements are formed) and a second region (overlapping the camera) that is separated by a partition. This segmentation allows the second region to be optimized for light transmittance while the first region maintains display functionality. The partition physically separates these two functional zones, enabling independent optimization of each region.
Solution Approach 2:
The patent applies different structural configurations to different regions: the first region contains complete display elements (lower electrode, organic layer, upper electrode) for light emission, while the second region removes the organic layer and upper electrode to maximize light transmittance for the camera. This local differentiation of structural quality allows each region to fulfill its specific function optimally.
2Illumination intensity
If the organic layer and upper electrode are removed in the overlapping region to improve light transmittance, then light entry into the camera is improved, but the display element structure is compromised
Solution Approach 1:
The partition divides the display area into distinct regions, allowing the second region to have a modified structure (without organic layer and upper electrode) while the first region maintains the complete display element structure. This segmentation ensures that structural integrity is preserved in the display region while enabling optical optimization in the camera region.
Solution Approach 2:
The patent implements local structural modification where only the second region (overlapping the camera) has the organic layer and upper electrode removed, while the first region retains the complete display element structure. This localized approach maintains overall structural reliability while achieving the desired light transmittance improvement in the specific region where it is needed.
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
Enhances light transmittance in the overlapping region without increasing the aperture ratio, maintaining display quality and allowing for efficient light entry into the camera.
Implementation Method 1
a display element in each of a plurality of pixels... an organic light-emitting diode (OLED) is applied as a display element
Data Source
AI summary
According to one embodiment, a display device includes a base, a lower electrode disposed in a first region on the base, a rib covering a part of the lower electrode and including an aperture overlapping the first region, a partition including a lower portion disposed on the rib and an upper portion protruding from a side surface of the lower portion, which compartmentalizes the first region and a second region different from the first region, an organic layer disposed in the first region and in contact with the lower electrode via the aperture and an upper electrode disposed on the organic layer, and the organic layer and the upper electrode are not disposed in the second region.