Projection Display Resolution Improvement via Displacement Plate
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Solution Overview
Problem
Projection-type display devices face challenges in achieving higher resolution without complex configurations or significant operational changes, particularly with the increasing demand for larger, thinner, and lighter displays in digital broadcasting.
Innovation Solution
A display device with a displacement plate that rotates around a central axis, dividing image signals into multiple sub-signals and applying specific input signals to drive the plate in predetermined directions, effectively altering the optical pathway to improve perceived resolution without physical pixel increase, using a magnet and coil interaction for precise movement control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the pixel count is increased to improve resolution, then the resolution is improved, but the device complexity and cost increase
Solution Approach 1:
The patent applies the dynamics principle by making the displacement plate movable rather than static. The plate is driven to rotate around its central axis by a driving means (motor or voice coil) in response to synchronization signals, dynamically changing the optical path during image display. This dynamic adjustment allows the same optical system to achieve multiple effective display positions without increasing pixel count, thereby improving resolution perception without increasing device complexity
Solution Approach 2:
The displacement plate serves as an intermediary element between the image forming means and the screen. By inserting this movable component into the optical path, it mediates the light transmission and can shift the displayed image position. This intermediary mechanism enables resolution improvement through optical path manipulation rather than increasing the fundamental pixel density of the display device
2Measurement precision
If a displacement plate is added to improve resolution, then the resolution is improved, but the device complexity increases
Solution Approach 1:
The displacement plate is designed to perform multiple functions: it can be rotated to different angular positions (0°, 45°, 90°, 135°) to achieve different image displacement effects, and it can be controlled to remain stationary when resolution improvement is not needed. This multi-functionality allows a single component to provide various display modes and resolution enhancement levels without requiring multiple separate devices or complex mechanisms
Solution Approach 2:
The patent utilizes parameter changes by adjusting the rotation angle of the displacement plate to alter the optical path. The driving means rotates the plate to specific angular positions based on synchronization signals, changing the refraction angle and thereby the image displacement amount. This parameter-based control (angular position) enables flexible resolution adjustment without physical structural changes to the core display device
3Measurement precision
If the displacement plate rotates frequently to improve resolution, then the resolution is improved, but the energy consumption increases
Solution Approach 1:
The displacement plate operates with periodic action by rotating to specific angular positions in synchronization with the display frame rate or field rate. The plate moves to predetermined positions (0°, 45°, 90°, 135°) at specific time intervals corresponding to synchronization signals, rather than rotating continuously. This periodic operation reduces energy consumption compared to continuous rotation while still achieving resolution improvement through timed optical path adjustments
Solution Approach 2:
The driving means rotates the displacement plate to the required angular position in advance before image display begins, based on predetermined synchronization signals. This preliminary positioning ensures the optical path is correctly configured before actual image rendering, avoiding the need for frequent adjustments during display and reducing overall energy consumption
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 enhances perceived resolution by displacing image positions on the screen, achieving improved image quality with existing pixel counts, thus addressing the need for higher resolution in projection-type displays with a simple and efficient configuration.
Implementation Method 1
a displacement means for displacing an image displayed on the screen to be displaced
Implementation Method 2
the driving means drives the displacement means by an interaction of a magnet and a coil
Data Source
AI summary
Disclosed is a display device adapting a resolution improvement device capable of effectively improving a resolution in a projecting display device and a method thereof. A display device according to the present invention comprises: a light source; an image forming means for forming an image using a light emitted from the light source and an input image signal; a projection means for projecting an image formed in the image forming means on a screen; a displacement means for displacing an image displayed on the screen to be displaced; a driving means for driving the displacement to be moved; and an input signal applying means for applying an input signal to the driving means for the displacement means to be rotated in a predetermined direction.According to the present invention, different images are displayed on a screen periodically. It seems that the greater number of pixels is used than the real number in a sense of sight. Thus, the present invention has an effect of improving a resolution with the same number of pixels.