Transparent Connection Layout for Under-Display Light Reception
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Solution Overview
Problem
Display devices with integrated electronic components such as cameras and sensors face challenges with increased bezel size due to the need for these components to receive light from the front, leading to design restrictions and potential image quality deterioration.
Innovation Solution
A display device design that includes a first display area capable of transmitting light and a second area with a unique connection structure between pixel circuits and light emitting elements, utilizing transparent and opaque metals in different layers to allow light transmission without exposing electronic devices to the front, thereby reducing bezel size and maintaining image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electronic devices (camera, sensor) are installed to receive light from the front, then they can perform shooting and sensing functions, but the bezel size increases and front design is restricted
Solution Approach 1:
The patent moves the electronic devices from the front surface to the rear side of the display panel, utilizing the z-dimension (depth) to resolve the contradiction. The camera and sensors are installed in a recessed region on the rear surface, allowing them to receive light transmitted through the display panel without occupying front surface area, thus maintaining full display area while enabling shooting and sensing functions.
Solution Approach 2:
The display panel itself serves as an intermediary medium, transmitting light from the front surface to the electronic devices on the rear surface. This allows the electronic devices to receive light without being exposed on the front, resolving the contradiction between functional capability and aesthetic design.
2Adaptability or versatility
If electronic devices are installed in a notch or physical hole, then they can receive light from the front, but the display area is reduced and image quality deteriorates
Solution Approach 1:
Instead of creating notches or holes in the front display surface, the patent relocates the light-receiving electronic devices to the rear dimension of the display panel. This eliminates the need for front surface openings, preserving 100% display area while maintaining light receiving capability through optical transmission through the panel.
Solution Approach 2:
The patent inverts the conventional approach by placing light-receiving devices on the rear surface rather than the front surface. Instead of opening holes in the front to receive light, light is transmitted through the entire panel thickness to reach devices on the opposite side, eliminating display area loss.
3Reliability
If connection lines with multiple metal layers are used to connect pixel circuits and light emitting elements, then electrical connection is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies different metal layer configurations locally: a first connection line with a first transparent metal is used in the first display area where light transmission is critical, while a second connection line with a first metal (possibly opaque or less transparent) is used in the second display area where electrical connection is prioritized. This local differentiation optimizes both light transmission and electrical connection without requiring complex multi-metal-layer structures throughout the entire device.
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
The design enables electronic devices to receive light without being exposed, reduces bezel size, and maintains image quality by optimizing manufacturing processes for single and multiple metal layers.
Implementation Method 1
a first connection line disposed in the first display area and the second display area and including a first transparent metal
Implementation Method 2
a connection line electrically connecting the first pixel electrode and the first pixel circuit
Data Source
AI summary
A display device according to an example of the present disclosure can include a display area having a first display area capable of transmitting light and a second display area located outside the first display area, a first pixel circuit disposed in the second display area, a first pixel electrode of a first light emitting element disposed in the first display area, and a connection line electrically connecting the first pixel electrode and the first pixel circuit.