Invention Grant
- Patent Title: Low voltage driver for high voltage LCD
- Patent Title (中): 低电压驱动器用于高压LCD
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Application No.: US11904931Application Date: 2007-09-28
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Publication No.: US08456463B2Publication Date: 2013-06-04
- Inventor: Abhishek Bandyopadhyay , Eric Nestler , Michael A. Ashburn, Jr.
- Applicant: Abhishek Bandyopadhyay , Eric Nestler , Michael A. Ashburn, Jr.
- Applicant Address: US MA Norwood
- Assignee: Analog Devices, Inc.
- Current Assignee: Analog Devices, Inc.
- Current Assignee Address: US MA Norwood
- Agency: Kenyon & Kenyon LLP
- Main IPC: G06F3/038
- IPC: G06F3/038 ; G09G5/00 ; G09G3/32 ; G09G3/36

Abstract:
A low voltage driver for a higher voltage LCD includes a plurality of LCD drive bias voltage input-terminals; an LCD drive voltage output terminal; an input transistor switching circuit having at least one switch for each LCD drive bias voltage for selecting one of the bias voltages; an output transistor switching circuit, responsive to the input transistor switching circuit, for applying the selected one of the bias voltages to the LCD drive voltage output terminal, the transistors of the switching circuits having a predetermined breakdown voltage; a level shifter for providing switching voltages counterpart to the plurality of bias voltages; a logic circuit for enabling the first transistor switching circuit to select a one of the bias voltages and applying a set of counterpart switching voltages to the input and output transistor switching circuits for connecting the selected one of the bias voltages to the output terminal and applying a set of switching voltages to the input and output switching circuits which limit the voltage across the transistor junctions in the switching circuit to less than the predetermined breakdown voltage.
Public/Granted literature
- US20080079708A1 Low voltage driver for high voltage LCD Public/Granted day:2008-04-03
Information query
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