Transparent Metal Pattern Layout for Under-Display Sensor Transmittance
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Solution Overview
Problem
Existing display devices face challenges in enhancing the transmittance of optical areas while maintaining image quality and reducing power consumption.
Innovation Solution
Incorporating a transparent metal pattern in non-transmissive areas of the display panel to increase the transmittance of optical areas, which includes a substrate with a first metal pattern and active layers, and optimizing subpixel configurations to enhance light transmission without compromising image display characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a traditional opaque metal pattern is used in non-transmissive areas, then electrical connectivity and structural support are maintained, but light transmittance in optical areas is reduced
Solution Approach 1:
The patent changes the optical parameter of the metal pattern from opaque to transparent by selecting specific metal materials (such as transparent conductive oxides like ITO, IZO, or IZO) that possess both electrical conductivity and optical transparency. This allows the metal pattern to simultaneously provide electrical connectivity and maintain light transmittance in the optical areas.
Solution Approach 2:
The patent employs composite material structures combining transparent conductive materials with semiconductor layers and insulation layers. The transparent metal pattern is integrated with organic light emitting materials and transparent insulation layers to create a composite structure that achieves both electrical functionality and optical transparency.
2Area of stationary object
If the display area is increased to improve image quality, then the display area ratio is improved, but the optical area for sensing devices is reduced
Solution Approach 1:
The patent resolves the area conflict by transitioning to a transparent metal pattern in the optical area, changing the dimensional property from opaque blocking to transparent transmission. This allows the optical area to serve dual purposes: maintaining display functionality while enabling light transmission for underlying sensing devices.
3Illumination intensity
If transparent metal is used to increase optical area transmittance, then light transmission is improved, but manufacturing complexity increases
Solution Approach 1:
The transparent metal pattern serves multiple functions simultaneously: it provides electrical connectivity for data lines, acts as a transparent barrier layer, and enables light transmission to underlying sensing devices. This multi-functionality reduces the need for separate components and simplifies the overall manufacturing process despite the advanced material requirements.
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 solution increases the transmittance of optical areas, reduces power consumption, and allows for seamless integration of electronic devices like cameras and sensors within the display without visible notches or holes, enhancing design freedom and functionality.
Implementation Method 1
a first metal pattern disposed on the substrate, disposed in the non-transmissive area, and including a transparent material
Data Source
AI summary
Embodiments of the disclosure relate to a display device. The display device includes a substrate, a first metal pattern disposed in a non-transmissive area and including a transparent material, a first data line disposed on the substrate and disposed over the non-transmissive area and at least one of a plurality of transmissive areas, and a first active layer disposed on the first metal pattern and overlapping the first metal pattern, thereby enhancing the transmittance of the optical area.