Ghost Image Display System for Low Power Active Matrix
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Solution Overview
Problem
Conventional display systems require integrated pixel control, which limits timing flexibility, increases power supply requirements, adds weight and cost, and makes displays less portable, and can result in image quality drift due to non-uniformity or aging of thin-film transistors.
Innovation Solution
A system that generates ghost images using a graphics generator and projects them as excitation light signals onto an active display with detection diodes and photon detection circuits, eliminating the need for pixel control by using low power projectors and light emitting diodes to create images on active or passive display matrices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If integrated pixel control is used in conventional display systems, then image display function is achieved, but timing flexibility is limited and power supply requirements increase
Solution Approach 1:
The patent extracts the control function from individual pixels and relocates it to a separate controller unit. The display panel itself becomes passive, receiving only light signals from the controller, thereby eliminating the need for integrated pixel control circuits and their associated power requirements.
Solution Approach 2:
The patent introduces an intermediary controller unit that generates light signals to activate pixels. This mediator handles all control logic and timing decisions externally, allowing the display panel to operate without integrated control circuits while maintaining full functionality.
2Ease of operation
If integrated pixel control is implemented, then display operation is enabled, but weight and cost increase
Solution Approach 1:
The patent removes control circuits from the display panel structure and places them in an external controller. This extraction eliminates the weight of integrated control components while preserving display operation through external signal generation.
3Ease of operation
If thin-film transistors are used in active-matrix displays, then pixel control is achieved, but image quality drift occurs due to non-uniformity and aging
Solution Approach 1:
The patent removes thin-film transistors from the pixel structure entirely, replacing active control with passive light-sensitive materials. This eliminates the aging and non-uniformity issues inherent in TFT technology while maintaining pixel control through external light signal generation.
Solution Approach 2:
The patent employs simple, replaceable light-sensitive materials at each pixel location instead of complex, degrading TFT structures. These passive materials can be easily replaced if degraded, and their simple structure avoids the aging problems of semiconductor transistors.
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 approach results in a low-cost, low-power, high-quality, and scalable display system that does not require controlling circuits, enabling flexible display configurations and potential applications in 3-D displays and camouflage technologies.
Implementation Method 1
a detection diode for detecting one or more excitation light signals for exciting a pixel
Implementation Method 2
a light emitting diode for generating an emitted light signal for each of the pixels
Data Source
AI summary
Systems and methods for displaying at least one image on an active display include a graphics generator for generating one or more graphics in form of at least one ghost image and a projector for projecting the generated at least one ghost image as an excitation light signal on the active display. The projector is a low power projector. Also included are number of detection diodes associated with pixels for detecting one or more excitation light signals for exciting each pixel associated with the detection diodes. Further included, is a photon detection circuit for generating at least one high power image photon based on the emitted light signal of each pixel on the active display and a number of light emitting diodes (LEDs) associated with each of the detection diodes for generating an emitted light signal for each of the pixels of the incident ghost image for generating an image on the active display.