Tynax ~ Patent Library

Patent for Sale:

Auto-switch Transistor    

It is a MOS-FET with a switch which automatically turns the current off once the current has passed through.


A method to incorporate an automatic switch into a standard transistor which will shut off the conduction shortly after the current has flowed from the source to the drain terminal of the transistor resulting in a shorter signal duration, sharper signal definition, and lower energy consumption. The auto-switch transistor has a simple structure and close similarity to flash memory transistor which allows cheap and easy means of manufacturing.

Primary Application of the Technology

Autoswitch MOS-FET is particular suitable with:

-- Display technology, in particular, the developing 3D displays: energy efficient and high-frequency transistors will allow more signals to be transmitted and the construction of smaller pixels resulting in a higher definition picture.
-- Semiconductors industry will benefit from energy efficient and high-frequency transistors.
-- Mobile systems and smartphones all can transmit more data with energy efficient and high-frequency transistors.

The Problem Solved by the Technology

One of the main problems with the miniaturizing process of a processor is the amount of heat emitted by the individual transistors. There must be enough space between the transistors to allow for heat convection (for air cool devices) or heat conduction (for fluid cool devices). If there is less heat emitted by the transistors, then they can be packed closer and we can raise the transistors density on the chip.

Another problem the electronic industry is currently facing is how to increase the computing powers of our electronic devices. While a high transistor density chip will have more computing power, fast signaling transistors will do even a better job.

How the Technology Solves the Problem

An off-switch gate is inserted within the insulating layer between the control gate and the body region of the field effect transistor. The off-switch gate is connected to the body of the transistor via a switching bridge. When the transistor is switched on by the control gate and a large current starts to flow from the source to the drain terminal, a smaller current will divert and flow to the off-switch gate. When the off-switch gate is fully charged, its electric field will screen and block the field effect of the control gate. The current will be shut off even if the signal of the control gate is still on. The duration of the signal from the auto-switch MOS-FET will be shorter than the duration of the signal from a standard MOS-FET. For the same reason, the energy expenditure of the auto-switch MOS-FET will be smaller than those from the standard transistors.

Competitive Advantage

-- Protection against short circuit because the current is automatically shut off after a short duration.
-- Provides means to lock the transistor in an inoperative state by using a constant low voltage signal.
-- Higher frequency output due to a shorter signal duration.
-- Energy efficiency: Favorable energy consumption profile against both standard MOS-FET and FinFET due to shorter signal duration.
-- Allowing to raise the transistor density on the processors due to low heat expenditure and high energy efficiency as a result of shorter signal duration.

Additional Information