Image Display Device Backside Imaging Light Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing image display devices with integrated imaging functions face challenges in manufacturing cost and image quality due to the need for high-accuracy microlenses and insufficient light condensation, particularly when adding pointing device functions and three-dimensional image display capabilities.
Innovation Solution
An image display device with an imaging device positioned on the backside of the display panel, featuring a light transmission region that allows for efficient light condensation without the need for high-accuracy microlenses, and includes a diffraction correcting section to improve image sharpness and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a pressure sensitive sensor is provided on the image display surface to add pointing device function, then the pointing device function is added, but the manufacturing cost rises and the image quality is reduced
Solution Approach 1:
The imaging device serves multiple functions: it captures images for TV telephone operations and simultaneously detects pointing operations by tracking finger or pen positions. This multi-functionality eliminates the need for separate pressure sensitive sensors, reducing manufacturing costs while maintaining pointing device capabilities
Solution Approach 2:
Instead of using physical pressure sensitive sensors that degrade image quality, the patent uses the imaging device to capture optical images of pointing objects (fingers or pens). The position detection is achieved by copying the visual information of the pointing object rather than through physical contact sensing
2Adaptability or versatility
If microlenses are provided in openings to enable image capture, then image capture capability is achieved, but high-accuracy microlenses are required which increases manufacturing cost
Solution Approach 1:
The patent replaces expensive high-precision microlenses with simple light transmission parts that do not require high manufacturing accuracy. These simpler optical elements are sufficient for the application, significantly reducing manufacturing costs while maintaining adequate image capture capability
Solution Approach 2:
The patent changes the optical parameters by using light transmission parts with larger aperture and different focal characteristics compared to traditional microlenses. This parameter change allows for simpler, less precise manufacturing while still achieving sufficient light condensation for image capture
3Device complexity
If one light transmission part is provided for plural pixels, then device complexity is reduced, but sufficient light condensation cannot be achieved
Solution Approach 1:
The patent divides the light transmission function into multiple separate light transmission parts, each corresponding to individual pixels or small pixel groups. This segmentation allows each light transmission part to effectively condense light for its associated pixels, achieving sufficient illumination intensity while maintaining relatively simple device structure
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 reduces manufacturing costs, enhances image quality by ensuring sufficient light condensation and accurate image capture, and enables effective three-dimensional image observation guidance without uncomfortable feelings for the user.
Implementation Method 1
images of the face of a user who sees the image display device are taken
Implementation Method 2
a light transmission region 30 provided for the plural pixels 11
Data Source
Figure 1A~1C
Figure 2
Figure 3A~3B
AI summary
An image display device having an imaging device, includes: an image display part in which a plurality of pixels including light-emitting devices are arranged; a light transmission region provided in the image display part; an imaging device arranged on a back side of the image display part; a light condensing means for condensing light passing through the light transmission region to the imaging device; and a position detecting means for obtaining position information of a subject based on image information acquired through the imaging device.