Behind-Display Optical Routing for Notch-Free 3D Sensing
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Solution Overview
Problem
Conventional placement of optical devices in computing devices, such as transmitters and receivers, in bevels or notches reduces the usable area of display screens and increases the overall size of the computing device.
Innovation Solution
Positioning the optical device components, including transmitters and receivers, behind the display screen, utilizing guides and couplers to route light, thereby eliminating or reducing the need for bevels or notches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transmitter and receiver of the optical device are placed in a separate area (bevel or notch) on the display screen, then the optical device can perform facial recognition and 3D sensing functions, but the usable display area is reduced and the overall device size increases
Solution Approach 1:
The patent merges the optical device (transmitter and receiver) with the display screen by integrating them into the same substrate or housing structure. This allows the optical components to be positioned behind or within the display screen rather than requiring separate bevels or notches, thereby combining multiple functions into a unified structure that eliminates the need for additional space.
Solution Approach 2:
The patent transitions the optical device from a two-dimensional surface placement (on the front of the display screen) to a three-dimensional integration (behind or within the display screen). By positioning the transmitter and receiver in the depth dimension rather than on the surface, the design eliminates the need for bevels or notches while maintaining optical functionality.
2Reliability
If the transmitter and receiver are placed in a bevel or notch on the display screen, then the optical device can transmit and receive light for sensing, but the overall device size increases
Solution Approach 1:
The patent merges the optical device with the display screen structure, allowing both components to share the same housing or substrate. This integration eliminates the need for additional bevels or notches that would increase device dimensions, as the optical components are accommodated within the existing display structure.
Solution Approach 2:
The patent positions the transmitter and receiver in the depth dimension (behind the display screen) rather than extending the device footprint in the lateral dimension. This dimensional transition allows sensing capabilities to be maintained without increasing the overall device size.
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
Increases the usable display area by minimizing interference with image output and reducing the device's overall size while maintaining effective 3D sensing capabilities.
Implementation Method 1
utilizing guides like waveguides to route light
Data Source
AI summary
A display system includes a display screen layer, a coupling region, an upper guide, a first coupler, a second coupler, and an optical element. The coupling region may be positioned along a sidewall of the display screen layer and may route a beam between the optical element and the upper guide and may route the beam between the first coupler and the second coupler. The first coupler may be positioned along a front surface of the upper guide and may couple a beam through the front surface of the upper guide. The second coupler may be positioned between the coupling region and the upper guide and may couple the beam between the coupling region and the upper guide. The optical element may be positioned below a back surface of the upper guide. A computing device with the display system is also disclosed.