Sequential Color Display Pixel Activation Phase Shifting
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Solution Overview
Problem
Existing methods for displaying a sequence of color images using a two-dimensional matrix of activatable pixels suffer from color break-up faults due to the uniform timing of pixel activation phases across primary images, leading to suboptimal display quality.
Innovation Solution
The method involves modulating the activation duration of pixels by shifting the activation phases of the first primary image toward the end of its subframe and the third primary image toward the beginning of its subframe, while maintaining the activation phases of the second primary image centered, thereby optimizing the time intervals between primary image activations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If pixel activation phases are uniformly positioned at the beginning of each subframe, then the control method is simple, but color break-up faults occur due to excessive time intervals between primary image activations
Solution Approach 1:
The patent applies dynamics by making the pixel activation phases variable rather than fixed. Specifically, the activation phase of the first primary image is shifted toward the end of its subframe, and the activation phase of the third primary image is shifted toward the beginning of its subframe. This dynamic adjustment optimizes the timing between activations of different primary images (R, G, B), reducing color break-up faults while maintaining simple control implementation.
2Object-affected harmful factors
If pixel activation phases are shifted to optimize timing between primary images, then color break-up faults are reduced, but the activation timing becomes more complex
Solution Approach 1:
The patent applies parameter changes by modifying the timing parameters of pixel activation phases. The activation phase of the first primary image is shifted toward the end of its subframe, and the activation phase of the third primary image is shifted toward the beginning of its subframe. This parameter optimization reduces color break-up faults while maintaining relatively simple control implementation, as the shifts are systematic rather than arbitrary.
3Duration of action of moving object
If the time interval between primary image activations is increased, then each primary image can be displayed more completely, but color break-up faults increase
Solution Approach 1:
The patent optimizes the timing by dynamically adjusting when pixels are activated within each subframe. The activation phase of the first primary image is shifted toward the end of its subframe, and the activation phase of the third primary image is shifted toward the beginning of its subframe. This creates optimal overlap timing between the deactivation of one primary image and the activation of the next, ensuring complete display of each primary image while minimizing color break-up faults.
Data Source
AI summary
Each color image is decomposed into at least one series of at least three successive primary images of different primary colors which are successively displayed by modulating the activation duration of the pixels of an imaging device. According to the invention, the distribution of the pixel activation phases in the three successive subframes is contracted: the pixel activation periods of the first primary image are shifted toward the end of the subframe of this first image, and, during the subframe of the third primary image, the pixel activation periods of this third primary image are shifted toward the beginning of the subframe of this third image. Color break-up faults are thus advantageously reduced.