Display Panel With Transparent Pixel Interconnects for Under-Screen Cameras
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Solution Overview
Problem
Existing display devices with integrated photosensitive components, such as front-facing cameras, cannot achieve full-screen display due to the need for non-display areas that reduce the effective display area and have insufficient light transmittance in the display areas containing these components.
Innovation Solution
A display panel design with a first display area having higher light transmittance than a second area, where adjacent sub-pixels emitting the same color are electrically connected via interconnection structures to form pixel groups, and at least one pixel group in the central region uses a transparent conductive structure, reducing wiring and enhancing light transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional display design with notches or openings is used to integrate photosensitive components, then photosensitive components can be integrated, but the display area is reduced and full-screen design cannot be achieved
Solution Approach 1:
The patent implements under-screen integration by nesting the photosensitive component within the display structure. The photosensitive component is positioned behind the display panel at a specific distance, allowing it to be integrated without creating visible notches or openings, thereby maintaining the full display area while enabling camera functionality.
Solution Approach 2:
The patent moves the photosensitive component from the traditional front-facing position (2D plane on the screen) to a position behind the display panel (3D space). This dimensional change allows the component to be integrated without occupying display area, achieving full-screen design while maintaining integration capability.
2Area of stationary object
If display area is increased to achieve full-screen design, then display area improves, but light transmittance in the display area decreases
Solution Approach 1:
The patent applies different structural characteristics to different regions of the display panel. The first display area has a optimized structure with specific layer configurations and spacing that enhance light transmittance, while the second display area uses a standard structure. This local differentiation allows the first display area to achieve both full coverage and high light transmittance for photosensitive component integration.
Solution Approach 2:
The patent modifies physical parameters of the display structure in the first display area, including layer thicknesses, material compositions, and spacing between components. These parameter changes are specifically optimized to maximize light transmittance while maintaining display functionality, enabling the area to serve dual purposes as both display and photosensitive integration zone.
3Measurement precision
If pixel density is increased to improve display resolution, then display quality improves, but the number of wirings increases and light transmittance decreases
Solution Approach 1:
The patent merges multiple pixel groups emitting the same color into a single integrated unit. By combining the wiring requirements of multiple pixels into one shared connection structure, the number of wirings is reduced, which in turn increases light transmittance while maintaining the ability to display high-resolution images through the coordinated operation of merged pixel groups.
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
Enables under-screen integration of photosensitive components while maintaining display functionality, improving the display area and achieving full-screen design by increasing light transmittance and reducing pixel density in the first display area.
Implementation Method 1
an aluminum oxide barrier layer which surrounds the light-emitting region and is positioned between the pixel electrode and the transparent electrode
Implementation Method 2
an encapsulation layer which encloses the light-emitting region and includes a plurality of holes
Implementation Method 3
a light-emitting layer which is positioned between the pixel electrode and the counter electrode and emits light having a center wavelength of 450 nm or more when driven
Implementation Method 4
an inorganic layer which is positioned over the light-emitting region and has a stepped cross-sectional shape
Data Source
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AI summary
The present application discloses a display panel and a display device. The display panel has a first display area and a second display area. The first display area includes a central region and an edge region adjacent to the central region. The first display area has a light transmittance greater than that of the second display area. The display panel includes a plurality of repetitive units, each of which includes at least two pixels, each pixel including at least sub-pixels of three colors. Each of the sub-pixels includes a first electrode, a light-emitting structure, and a second electrode stacked in sequence. In the first display area, the first electrodes of adjacent sub-pixels of an identical color in the repetitive unit are electrically connected via an interconnection structure in order to form a concolorous pixel group. In the central region, the interconnection structure of at least the concolorous pixel group of one color is a transparent conductive structure. The display panel provided according to the embodiments of the application can further enhance the light transmittance of the central region.