Under-Display Optical Panel Layout for Hidden Cameras and Sensors
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Solution Overview
Problem
Display devices with integrated optical electronic devices, such as cameras or sensors, suffer from increased bezel size and require notches or holes due to the installation of these devices, which reduces the display area and affects transmittance.
Innovation Solution
The optical electronic devices are positioned under the display panel, with a light transmission structure allowing light to pass through, and the display area is designed with zigzag-shaped horizontal lines to accommodate these devices without reducing the display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If optical electronic devices are installed in the front portion of the display device, then the optical devices can receive incident light advantageously, but the bezel size increases and the display area is reduced due to notches or holes
Solution Approach 1:
The patent moves the optical electronic device from the front surface (2D plane) to the back surface of the display panel, utilizing the third dimension (depth) to resolve the conflict between light reception and display area. The optical device is positioned in a lower portion beneath the display area, allowing light to pass through the display panel from the front while the device remains hidden from view.
2Illumination intensity
If optical electronic devices are installed in the front portion of the display device, then the optical devices can receive incident light advantageously, but the bezel size increases
Solution Approach 1:
The patent relocates the optical electronic device to the back surface of the display panel, utilizing the third dimension to eliminate the need for front surface openings. This allows the bezel to maintain a minimal size while the optical device remains positioned to receive light that passes through the display panel.
3Area of stationary object
If optical electronic devices are disposed under the display panel, then the display area is maintained and devices are hidden, but light transmission to the devices must be ensured through the display panel
Solution Approach 1:
The patent applies local quality by creating a first optical area with different properties from the normal area. The first optical area is specifically designed with light transmission characteristics that allow incident light to reach the optical electronic device on the back surface, while other areas of the display panel maintain their normal display properties. This localized optimization ensures sufficient light transmission to the optical device without compromising the overall display quality.
4Area of stationary object
If the display area is expanded to include the optical device area, then the display area increases, but the optical device must be visible on the front surface
Solution Approach 1:
The patent utilizes the third dimension by positioning the optical electronic device on the back surface of the display panel while maintaining the display area's visual integrity on the front surface. The display area extends to cover the region above the optical device, but the device itself remains hidden from front view, achieving both full display area and device concealment through spatial separation in the depth dimension.
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 configuration maintains the display area by hiding the optical devices and enhances transmittance, enabling normal display driving and functionality of optical devices like cameras and sensors.
Implementation Method 1
a light transmission structure is implemented to allow light to pass through, enabling the optical devices to receive light
Data Source
AI summary
A display device including a display panel including a plurality of light emitting areas; a first optical electronic device located under the display panel; a second optical electronic device located under the display panel. Further, a first optical area of the display panel overlapping the first optical electronic device comprises a plurality of first light transmission areas in addition to the plurality of light emitting areas, a second optical area of the display panel overlapping the second optical electronic device comprises a plurality of second light transmission areas in addition the plurality of light emitting areas, and a third optical area of the display panel not overlapping the first and second optical electronic devices includes the plurality of light emitting areas without including the first and second light transmission areas. In addition, the first optical area includes zigzag rows of the light emitting areas and zigzag rows of first horizontal signal lines overlapping the zigzag rows of the light emitting areas.