Backlight Structured Light Display for 3D Imaging
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Solution Overview
Problem
In display panels aiming for full-screen display and 3D imaging, the requirements of structured light-emitting and receiving ends conflict with the display effect, leading to poor display performance when the structured light requirements are met.
Innovation Solution
The display device is designed with a structured light-emitting end and a structured light-receiving end disposed on the backlight surface of the display panel, which includes a first display area with high transmittance for the structured light-receiving end and a second display area with controlled light intensity for the structured light-emitting end, optimizing both 3D imaging and display uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the transparent area is enlarged to accommodate structured light-emitting end and structured light-receiving end, then the 3D imaging capability is improved, but the display area is reduced and display uniformity deteriorates
Solution Approach 1:
The patent moves the structured light-emitting end and structured light-receiving end from the front surface to the backlight surface of the display panel. This dimensional change allows the transparent area to be located at the backlight surface rather than the front surface, enabling both 3D imaging functionality and full-screen display without reducing the visible display area.
Solution Approach 2:
The patent divides the display panel into different display areas (first display area, second display area, third display area) with different transmittance characteristics. The first and second display areas have higher transmittance to accommodate structured light, while the third display area has lower transmittance for normal display, allowing segmented optimization of different regions for different functions.
2Measurement precision
If the transmittance of the transparent area is increased to improve structured light reception, then the 3D imaging accuracy is improved, but the display uniformity deteriorates
Solution Approach 1:
The patent applies different transmittance characteristics to different display areas. The first display area (with structured light-receiving end) and second display area (with structured light-emitting end) have higher transmittance to ensure accurate structured light reception and emission, while the third display area has lower transmittance for normal display. This local differentiation allows each area to optimize for its specific function without compromising overall display quality.
Solution Approach 2:
The patent changes the transmittance parameter of different display areas to optimize their performance. By setting higher transmittance for areas with structured light ends and lower transmittance for normal display areas, the patent achieves both accurate 3D imaging and good display uniformity in their respective regions.
3Adaptability or versatility
If the structured light-emitting end and structured light-receiving end are disposed on the front surface, then the 3D imaging function is achieved, but the display effect deteriorates due to light blocking
Solution Approach 1:
The patent relocates the structured light-emitting end and structured light-receiving end from the front surface to the backlight surface. This dimensional relocation ensures that the structured light ends do not block light during display, as they are positioned on the opposite side of the light emission path. The transparent areas on the backlight surface allow structured light transmission without interfering with the display brightness.
4Area of stationary object
If the transparent area is used for full-screen display, then the display area is maximized, but the structured light requirements conflict with display effect
Solution Approach 1:
By moving the structured light ends to the backlight surface, the patent creates a spatial separation between the structured light transmission path and the display light emission path. The transparent areas on the backlight surface are optimized for structured light transmission, while the front surface maintains full-screen display capability without interference from structured light ends.
Solution Approach 2:
The patent creates different functional zones with different optical characteristics. The first and second display areas have enhanced transmittance for structured light, while the third display area has optimized transmittance for display. This local quality differentiation allows the transparent area to serve dual purposes: full-screen display and structured light transmission, without one function interfering with the other.
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 enhances the display effect by ensuring high transmittance for the structured light-receiving end and reducing the influence of structured light on the active layer of transistors in the second display area, thereby improving display uniformity and consistency across different areas of the display panel.
Implementation Method 1
A transmittance of the first display area and a transmittance of the second display area are greater than a transmittance of the third display area
Implementation Method 2
The structured light-emitting end is disposed on a backlight surface of the display panel
Implementation Method 3
The structured light-receiving end is disposed on the backlight surface of the display panel
Data Source
AI summary
A display device includes a structured light-emitting end, a structured light-receiving end, and a display panel. The structured light-emitting end and the structured light-receiving end are disposed on the backlight surface of the display panel. The structured light-receiving end is disposed opposite to the first display area, and the structured light-emitting end is disposed opposite to the second display area. The first display area of the display device is provided with multiple first pixel driving circuits and multiple first light-emitting units. The vertical projection of each first pixel driving circuit on the backlight surface of the display panel overlaps the vertical projection of one first light-emitting unit, which is connected to the each first pixel driving circuit, on the backlight surface of the display panel.