Dual Display Panel Projector Using Pixel Shift for High Resolution
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Solution Overview
Problem
Existing projector technologies face challenges in achieving high image quality due to increased scale, cost, and power consumption associated with optical path shifting means, which are necessary to enhance resolution and brightness.
Innovation Solution
A projector configuration using first and second display panels with picture elements that modulate light to form images, where one panel's image is projected shifted relative to the other, allowing for superposition to increase the perceived number of picture elements without the need for optical path shifting means, thereby reducing device size, cost, and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If optical path shifting means is provided to increase the number of pixels of projected image, then image resolution is improved, but device scale and manufacturing cost increase
Solution Approach 1:
The invention divides the single display panel into two separate display panels, each displaying a subset of the total pixels. By segmenting the pixel display across two panels and combining their outputs, the system achieves higher effective resolution without requiring complex optical path shifting mechanisms within a single panel system.
Solution Approach 2:
The invention merges the output images from two separate display panels through the projection optical system to create a single high-resolution projected image. The images from both panels are combined on the projection screen, effectively doubling the pixel count while avoiding the need for additional optical path shifting components.
2Measurement precision
If optical path shifting means is provided to increase the number of pixels of projected image, then image resolution is improved, but manufacturing cost increases
Solution Approach 1:
By segmenting the pixel display across two standard display panels rather than using a single high-resolution panel with optical path shifting, the invention reduces manufacturing costs. Each panel can use conventional, cost-effective display technology while achieving higher effective resolution through their combined output.
Solution Approach 2:
The invention creates multiple copies of display panels with standard resolution and combines their outputs to achieve high resolution. This approach is more cost-effective than manufacturing a single high-resolution panel with expensive optical path shifting mechanisms, as it uses multiple copies of simpler, cheaper components.
3Measurement precision
If optical path shifting means is provided to increase the number of pixels of projected image, then image resolution is improved, but power consumption increases
Solution Approach 1:
By segmenting the display function across two panels without optical path shifting mechanisms, the invention eliminates the power consumption associated with moving or switching optical components. Each panel operates independently at standard resolution, and their combined output achieves high resolution without additional energy demands from optical path manipulation.
4Measurement precision
If optical path shifting means is provided to increase the number of pixels of projected image, then image resolution is improved, but device scale increases
Solution Approach 1:
The invention segments the pixel display across two panels positioned side-by-side or in adjacent configurations, eliminating the need for space-consuming optical path shifting mechanisms. This segmentation approach achieves high resolution while maintaining a compact device footprint.
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 image resolution by increasing the number of perceived picture elements, achieving higher image quality without the drawbacks of increased size, cost, and power consumption, leveraging the afterimage phenomenon for improved human visual perception.
Implementation Method 1
first and second display panels that are each equipped with a plurality of picture elements and that modulate incident light by means of the plurality of picture elements to form images
Implementation Method 2
projection means that superposes the images that are formed on the first and second display panels to project the superposed images on a projection surface
Implementation Method 3
By making the display cycle of images I1 and I2 shorter than the afterimage interval of the human eye, an image in which the projected images of images I1 and I2 are superposed can be observed
Data Source
AI summary
A projector includes: first and second display panels and a projection unit that superposes images formed by the first and second display panels and that projects the superposed images on a projection surface. The first and second display panels are arranged such that the image formed by one display panel is projected to a position shifted by a predetermined distance in at least one of the row direction and column direction of the picture element array with respect to the position where the image formed by the other display panel is projected.