Display Device With Color-Dependent Pixel Pitch Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display devices experience degraded 3D image quality due to differences in diffraction angles based on light wavelength, leading to interference issues across different colors.
Innovation Solution
A display device is designed with pixels of varying pitches corresponding to the wavelengths of colors displayed, where red pixels have the largest pitch, green pixels have a medium pitch, and blue pixels have the smallest pitch, ensuring that interference images are displayed at the same position regardless of color, thereby improving image quality and viewing angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a uniform pitch is used for all pixels regardless of color, then the device structure is simple and easy to manufacture, but the 3D image quality is degraded due to interference at different positions for different colors
Solution Approach 1:
The patent applies local quality by assigning different pitch values to pixels based on their color wavelength. Specifically, red pixels (longer wavelength) have a larger pitch, green pixels have a medium pitch, and blue pixels (shorter wavelength) have a smaller pitch. This localized differentiation ensures that interference patterns for different colors converge at the same position, improving 3D image quality without requiring complete structural redesign.
Solution Approach 2:
The patent changes the physical parameter of pitch distance according to the wavelength parameter of each color. By establishing a relationship where pitch is proportional to wavelength (red > green > blue), the interference maxima for different colors are aligned at the same spatial position, resolving the color-dependent interference issue while maintaining a systematic approach to pixel arrangement.
2Manufacturing precision
If different pitches are assigned to different color pixels, then interference images are aligned at the same position improving image quality, but the pixel arrangement and connection structure becomes more complex
Solution Approach 1:
The patent segments the pixel array into distinct color groups (red, green, blue) with different pitch characteristics. This segmentation allows each color group to be optimized independently for its wavelength, ensuring proper interference alignment while simplifying the overall design by treating each color segment as a separate unit with consistent internal spacing.
Solution Approach 2:
The patent introduces a new dimension to the pixel arrangement by varying pitch in the horizontal direction based on color wavelength, while maintaining regular vertical spacing. This dimensional differentiation allows interference alignment without requiring complete two-dimensional reconfiguration, thus managing complexity by applying variation in only one dimension.
3Manufacturing precision
If the pitch between red pixels is increased to align interference patterns, then the viewing angle and image quality improve, but the overall display area and resolution may be affected
Solution Approach 1:
The patent optimizes the pitch parameter for each color based on its wavelength, creating a proportional relationship where pitch increases with wavelength. This parameter adjustment ensures that the path difference for reflected light from adjacent pixels of the same color results in constructive interference at the same angle for all colors, improving viewing angle and image quality while maintaining efficient display area utilization through systematic spacing.
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 image quality and viewing angle of 3D images by aligning interference patterns across colors, while also allowing for the representation of both 3D and 2D images with improved resolution.
Implementation Method 1
real 3D images are implemented through the interference of diffracted light
Implementation Method 2
interference of diffracted light
Data Source
AI summary
A display device includes a plurality of first pixels and a plurality of second pixels. The first and second pixels are configured to display different colors from each other, and a pitch between adjacent ones of the first pixels in a first direction is different from a pitch between adjacent ones of the second pixels in the first direction.