Level conversion circuit and electronic device

A technology for converting circuits and levels, applied in the direction of logic circuit connection/interface arrangement, logic circuit, logic circuit coupling/interface using field effect transistors, etc., can solve the problems of large circuit area and long signal transmission delay, etc. The effect of reducing complexity

Pending Publication Date: 2022-05-31
FOCALTECH ELECTRONICS SHENZHEN CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, it is necessary to provide a level conversion circuit and an electronic device, aiming to solve the technical problems of excessive circuit area and excessive signal transmission delay in the prior art when multi-level circuits are used for voltage domain conversion

Method used

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  • Level conversion circuit and electronic device
  • Level conversion circuit and electronic device
  • Level conversion circuit and electronic device

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Embodiment Construction

[0057] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0058] In the description of the embodiments of the present invention, it should be noted that unless otherwise specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection ; It can be a mechanical connection, or an e...

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Abstract

The invention provides a level conversion circuit which comprises a first voltage domain circuit and a second voltage domain circuit. The second voltage domain circuit converts an input signal of the first voltage domain circuit into an output signal of a second voltage domain. The input signal is switched between a first high level potential and a first low level potential, and the output signal is switched between a second high level potential and a second low level potential. The second voltage domain circuit includes a plurality of transistors forming an input unit, a control unit, and an output unit. And the control unit clamps the voltage domains of the input unit and the output unit in a preset range according to the first control voltage and the second control voltage so as to prevent the same type of transistors in the second voltage domain circuit from being broken down. The invention further provides an electronic device.

Description

technical field [0001] The invention relates to a signal transmission between different voltage domains, in particular to a level conversion circuit and an electronic device. Background technique [0002] Generally, a display includes a display panel and a display driving circuit for driving the display panel to display images. The driving circuit disposed in the non-display area usually has a level conversion circuit. The level conversion circuit is used to convert the signal in the low voltage domain to the signal in the high voltage domain or convert the signal in the high voltage domain to the signal in the low voltage domain, so as to realize signal transmission in different voltage domains. The level conversion circuit includes an input circuit, an output circuit, and a control circuit connected between the input circuit and the output circuit. The input circuit includes a non-inverting input terminal and an inverting input terminal having a pair of input transistors...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K19/0185H03K19/017H03K19/003
CPCH03K19/018507H03K19/017H03K19/00315
Inventor 蒋新喜程珍娟孙天奇张靖恺
Owner FOCALTECH ELECTRONICS SHENZHEN CO LTD
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