Infrared Imaging Through LCD Black Matrix-Free Region
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Solution Overview
Problem
Existing image pickup apparatuses equipped with display functions struggle to acquire clear subject images due to the influence of black matrices in liquid crystal panels, leading to image blurring and multiple images when using infrared light for imaging.
Innovation Solution
The proposed image pickup apparatus includes a liquid crystal panel without a black matrix in the first region, allowing an infrared camera to be disposed on the back face of the panel. This configuration enables clear infrared imaging by suppressing the influence of diffraction images and maintaining image quality across the display region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a black matrix is included in the liquid crystal panel, then the display quality is improved, but the infrared imaging quality deteriorates due to diffraction images and multiple images
Solution Approach 1:
The liquid crystal panel is divided into two distinct regions: a first region without a black matrix for infrared imaging and a second region with a black matrix for display purposes. This segmentation allows each region to optimize its specific function without compromising the other.
Solution Approach 2:
The black matrix is selectively applied only in the second region of the liquid crystal panel, while the first region maintains no black matrix. This local differentiation enables the first region to transmit infrared light clearly for imaging while the second region provides high-quality display output.
2Device complexity
If an infrared camera is disposed on the back face of the liquid crystal panel, then the instrument panel structure is simplified, but the image clarity deteriorates due to the black matrix causing diffraction and multiple images
Solution Approach 1:
The liquid crystal panel is segmented into a first region without black matrix for infrared camera imaging and a second region with black matrix for display, allowing the infrared camera to be positioned on the back face while maintaining image clarity in the first region.
3Shape
If the entire liquid crystal panel is used for display, then the aesthetic appearance is maintained, but the infrared imaging function cannot be implemented
Solution Approach 1:
The liquid crystal panel is divided into a first region for infrared imaging and a second region for display, enabling dual functionality while maintaining aesthetic appearance through the integrated display region.
Solution Approach 2:
The liquid crystal panel serves multiple functions: the first region enables infrared imaging through the back face while the second region provides display output, making the instrument panel both aesthetically pleasing and functionally versatile.
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 effectively acquires clear subject images using infrared light, reducing image blurring and multiple image issues while maintaining the aesthetic appearance of the instrument panel and providing a comfortable driving environment.
Implementation Method 1
an infrared camera including a condenser lens and an imaging element
Implementation Method 2
light transmitted through the first region
Data Source
AI summary
An image pickup apparatus equipped with a display function includes a liquid crystal panel, an infrared camera including a condenser lens and an imaging element, and a backlight disposed on a back face of the liquid crystal panel. The liquid crystal panel includes a display region including a first region and a second region located to surround the first region in a plan view, at least the imaging element of the infrared camera is disposed on a light path of light transmitted through the first region and the condenser lens, and the liquid crystal panel does not include a black matrix at least in the first region but includes color filters in the first and second regions.