Lenticular Stereoscopic Display Eliminating Black Stripes
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Solution Overview
Problem
Conventional stereoscopic image display devices using lenticular technology suffer from issues like black and white stripes, Moire fringes, and color shift due to periodic observation of black matrices by the eyes, leading to uneven display and potential failure in observing stereoscopic images.
Innovation Solution
A stereoscopic image display device with a lens sheet formed by half-cylinder lenses, where the X-coordinate values of pixel units do not repeat periodically within one cycle of the lens sheet, and the second black matrix is disposed between adjacent columns of pixel units, reducing the occurrence of dark stripes and improving display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional lenticular stereoscopic image display device is used with periodic black matrices between pixel units, then the device structure is simple and easy to manufacture, but black and white stripes and Moire fringes occur due to periodic observation of black matrices by the eyes
Solution Approach 1:
The patent applies asymmetry by making the cycle length of the lens sheet an odd multiple of the pixel unit cycle length, breaking the periodic symmetry that causes black and white stripes. This asymmetric relationship ensures that the black matrices do not align periodically with the lens cycles, eliminating the stripe effect while maintaining manufacturability
Solution Approach 2:
The patent changes the critical parameter of the lens sheet cycle length to be an odd multiple of the pixel unit cycle length. This parameter modification fundamentally alters the optical path relationships, preventing the periodic reinforcement of black matrix observations that causes stripes and Moire fringes
2Device complexity
If the cycle length of the lens sheet is made equal to or an even multiple of the pixel unit cycle length, then the optical alignment is simplified, but black and white stripes occur due to periodic observation of black matrices
Solution Approach 1:
The patent introduces asymmetry by specifying that the lens sheet cycle length must be an odd multiple of the pixel unit cycle length. This asymmetric relationship disrupts the periodic alignment between black matrices and lens cycles, preventing stripe formation while keeping the device structure relatively simple
Solution Approach 2:
The patent utilizes periodic action by establishing a specific mathematical relationship (odd multiple) between the lens sheet cycle and pixel unit cycle. This controlled periodicity ensures that black matrices are not observed periodically by the eyes, eliminating stripes while maintaining regular structural patterns
3Reliability
If a conventional lenticular stereoscopic image display device is used, then the basic stereoscopic function is achieved, but Moire fringes and color shift occur due to the periodic structure
Solution Approach 1:
The patent changes the critical parameter of the lens sheet cycle length to be an odd multiple of the pixel unit cycle length. This parameter modification eliminates the periodic interference patterns that cause Moire fringes and color shift, ensuring reliable stereoscopic display without these harmful artifacts
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 eliminates black and white stripes and enhances the stereoscopic display effect by ensuring that X-coordinate values of pixel units are non-repeating, thereby improving the overall display quality and reducing Moire fringes and color shift issues.
Implementation Method 1
lights from the pixel unit 09 are refracted by the lens sheet 03, so that the light from the right pixel unit 09R only arrives at the right eye and the light from the left pixel unit 09L only arrives at the left eye
Data Source
AI summary
The disclosure provides a stereoscopic image display device, including: multiple display units, the multiple display units being arranged in rows and columns, a first black matrix being disposed between adjacent rows of display units, and a second black matrix being disposed between adjacent columns of display units. The stereoscopic image display device also includes a lens sheet disposed corresponding to the multiple display units, the lens sheet being formed by multiple lined up half-cylinder lenses, and, in an X-direction, a cycle length of the half-cylinder lenses in the lens sheet being a positive even multiple of a cycle length of the display units. In the display device, X coordinate values of the multiple display units do not repeat periodically within one cycle of the lens sheet. The stereoscopic image display device according to the disclosure can solve a problem of black and white stripes, thereby improving the display effect.