Display Substrate Depth Camera Integration
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Solution Overview
Problem
Existing depth cameras are difficult to miniaturize and are costly due to their complex optical and electronic components, making them less accessible and flexible for consumer use.
Innovation Solution
A display substrate with a depth camera integrated in a non-active region, featuring an infrared light emitting device, diffractive optical elements, and an infrared photosensitive device, which enables miniaturization and integration into display panels, reducing cost and thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional depth camera architectures (binocular stereo vision, TOF, structured light) are used, then depth information acquisition capability is achieved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines the infrared light emitting device and infrared photosensitive device into a single display substrate, integrating the depth camera functionality with the display panel. This merging eliminates the need for separate depth camera modules and reduces overall device complexity while maintaining depth measurement capability through the coordinated operation of these integrated components
Solution Approach 2:
The display substrate serves dual functions: it acts as both the display panel and the depth camera platform. The infrared light emitting device and infrared photosensitive device are integrated into the same substrate that provides visual display, enabling the display panel to perform both image display and depth information acquisition functions simultaneously
2Measurement precision
If traditional depth camera architectures are used, then depth measurement functionality is achieved, but manufacturing cost increases
Solution Approach 1:
By merging the depth camera components with the display substrate manufacturing process, the patent achieves economies of scale. The infrared light emitting device and infrared photosensitive device are fabricated using the same semiconductor manufacturing processes as the display panel, eliminating the need for separate assembly lines and reducing per-unit manufacturing costs
Solution Approach 2:
The display substrate manufacturing process itself provides the infrastructure and capabilities needed to manufacture the depth camera components. The same fabrication facilities, materials, and processes used for creating the display panel are leveraged to create the infrared emitting and sensing elements, making the manufacturing system self-sufficient for producing both functions
3Area of stationary object
If display panel area is maximized, then display quality is improved, but available space for depth camera components decreases
Solution Approach 1:
The patent merges the depth camera components directly into the display substrate structure, eliminating the need for separate mounting space. The infrared light emitting device and infrared photosensitive device are fabricated in the same planar substrate as the display pixels, allowing full utilization of the display area without sacrificing space for additional depth camera components
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 allows for the acquisition of depth information while reducing manufacturing costs and panel thickness, making the technology more accessible and flexible for consumer applications.
Implementation Method 1
an infrared light emitting device that emits infrared light and is disposed on the substrate
Implementation Method 2
an infrared light emitting device that emits infrared light
Implementation Method 3
a diffractive optical element that is disposed on the infrared light emitting device and is used to transmit the infrared light emitted from the infrared light emitting device to an object
Implementation Method 4
an infrared photosensitive device that is disposed on the substrate and receives the infrared light reflected by the object
Data Source
AI summary
The present disclosure relates to a display substrate. The display substrate includes an active region and a non-active region, and a depth camera is disposed in the non-active region. The depth camera includes at least one receiving unit and a plurality of diffractive units. At least a part of the diffractive units includes an infrared light emitting device disposed on the substrate that emits infrared light. The part of the diffractive units includes a diffractive optical element disposed on the infrared light emitting device and used to transmit the infrared light emitted from the infrared light emitting device to an object. The receiving unit includes an infrared photosensitive device disposed on the substrate and used to receive the infrared light reflected by the object.