Transmissive Windows in Image Display Devices to Suppress Diffracted Light
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Solution Overview
Problem
In image display devices, the arrangement of image sensor modules immediately below the display panel leads to irregular reflection, refraction, and diffraction of light within the display panel, resulting in deteriorated image quality due to diffracted light.
Innovation Solution
The implementation of an image display device with a pixel region containing transmissive windows of varying sizes, where each pixel includes a self-light-emitting element, a light emitting region, and a non-light emitting region with a transmissive window, helps to suppress the generation of diffracted light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the image sensor module is arranged immediately below the display panel to reduce bezel width and make the device more compact, then the device size is reduced, but diffracted light is generated due to irregular reflection, refraction, and diffraction in the display panel, causing image quality deterioration
Solution Approach 1:
The patent applies local quality by creating transmissive windows with specific geometric patterns (circles, squares, or other shapes) in the non-light emitting regions of the display panel. These windows have different sizes and/or shapes in different pixel regions, allowing localized control over light transmission characteristics to suppress diffracted light while maintaining display functionality.
Solution Approach 2:
The patent changes geometric parameters (size, shape, arrangement) of the transmissive windows to control diffraction characteristics. By adjusting these parameters, the patent reduces the intensity of high-order light components in diffracted light, thereby improving image quality while maintaining the compact device structure.
2Object-affected harmful factors
If transmissive windows are introduced in the non-light emitting region to suppress diffracted light, then image quality is improved, but the display panel structure becomes more complex
Solution Approach 1:
The patent segments the non-light emitting region into multiple transmissive windows with different sizes and/or shapes. This segmentation approach allows systematic control of diffraction patterns while maintaining manufacturing feasibility through standardized window designs that can be integrated into existing display panel fabrication processes.
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 effectively reduces the intensity of high-order light components in diffracted light, thereby improving the image quality by minimizing the impact of diffracted light on the image sensor module.
Implementation Method 1
light incident on the display panel is irregularly reflected, refracted, and diffracted in the display panel, and then impinges on the image sensor module in a state where light caused by the reflection, the refraction, and the diffraction (hereinafter, referred to as diffracted light) is generated
Implementation Method 2
light incident on the display panel is irregularly reflected, refracted, and diffracted in the display panel
Implementation Method 3
a self light-emitting element; a light emitting region in which light is emitted by the self light-emitting element
Data Source
AI summary
Image display devices with suppressed generation of diffracted light are disclosed. In one example, an image display device includes pixels arranged two-dimensionally, and a pixel region including some of the pixels that has transmissive windows that transmit visible light and have different sizes. The pixels include a self-light-emitting element, a light emitting region in which light is emitted by the self-light-emitting element, and a non-light emitting region including the transmissive window.