Display Panel Depth Sensing Using Liquid Crystal Lenses
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Solution Overview
Problem
Existing display devices with binocular imaging technology require significant hardware resources to capture depth information, which is inefficient and resource-intensive compared to traditional methods.
Innovation Solution
A display panel integrated with a detecting light transmitter, receiver, and optical elements, such as liquid crystal lenses, that diverge and converge light to measure depth information using time-of-flight technology, reducing the need for additional hardware by utilizing the display panel's substrate for both depth sensing and image display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If binocular imaging technology is used to capture depth information, then depth sensing capability is improved, but hardware resource consumption increases significantly
Solution Approach 1:
The patent combines the display panel and depth sensing components into a single integrated structure. The display panel includes pixel units for image display and detecting light transmitters/receivers for depth sensing, both integrated on the same substrate. This merging eliminates the need for separate binocular camera hardware while achieving depth measurement functionality.
Solution Approach 2:
The display panel serves multiple functions: it displays images through pixel units and simultaneously performs depth sensing through detecting light transmitters and receivers. The optical elements (lens units) serve dual purposes of focusing light for display and guiding detecting light for depth measurement, reducing overall hardware requirements.
2Measurement precision
If separate depth sensing hardware is added to display devices, then depth information measurement is improved, but device structure complexity increases
Solution Approach 1:
The patent integrates depth sensing components directly into the display panel structure. The detecting light transmitter, detecting light receiver, and optical elements are all disposed on the same substrate as the pixel units, creating a unified device that performs both display and depth sensing without requiring separate hardware modules.
Solution Approach 2:
The lens units serve dual functions: they focus light for the display function and guide detecting light for depth measurement. This multi-functionality reduces the need for separate optical components, simplifying the overall device structure while maintaining depth sensing capability.
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 enables efficient measurement of depth information with reduced hardware requirements, improving performance and resource utilization compared to binocular imaging technologies while maintaining display functionality.
Implementation Method 1
the first optical element is configured to diverge light emitted from the detecting light transmitter
Implementation Method 2
the second optical element is configured to converge the reflected divergent light to the detecting light receiver
Implementation Method 3
the first optical element includes a first liquid crystal lens unit, the second optical element includes a second liquid crystal lens unit
Implementation Method 4
depth information is measured on an external object according to a phase difference between the light emitted from the detecting light transmitter and the light received by the detecting light receiver
Data Source
AI summary
The present disclosure relates to a display panel, a device and a method for controlling the same. The display panel includes: a substrate; a detecting light transmitter, a detecting light receiver, a first optical element and a second optical element which are disposed on the substrate. The first optical element is configured to diverge light emitted from the detecting light transmitter and the second optical element is configured to converge the reflected divergent light to the detecting light receiver.