公开(公告)号：ITVA20070032A1

公开(公告)日：2008-09-22

申请号：ITVA20070032

申请日：2007-03-21

Applicant: DORA SPA

Inventor： BISAGLIA PAOLA ,  GUERRIERI LORENZO

公开(公告)号：ITMI20021424D0

公开(公告)日：2002-06-27

申请号：ITMI20021424

申请日：2002-06-27

Applicant: ST MICROELECTRONICS SRL ,  DORA SPA

Inventor： PULVIRENTI FRANCESCO ,  SALA LEONARDO ,  PRIVITERA SALVATORE ,  PAPPALARDO SALVATORE

IPC: G02F1/133 ,  G09G3/20 ,  G09G3/36

Abstract: A system for driving columns of a liquid crystal display includes logic circuitry operating in a supply path between a first and a second supply voltage in which the first supply voltage is higher than the second supply voltage. The logic circuitry is capable of generating first logic signals and second logic signals whose value is equal to the first or second supply voltage. The system includes two level shifters coupled to the logic circuitry and operating in a supply path between a third supply voltage greater than the first supply voltage and the second supply voltage; the level shifters are capable of raising the value of the second logic signals. The system also includes a first and a second pair of transistors having different supply paths and having an output terminal in common; the first and the second pair of transistors are coupled to the level shifters to determine the drive signal of a column. The system includes turnoff circuitry operating in a supply path between the third and the second supply voltage and coupled to the two level shifters. The turnoff circuitry is capable of keeping one of the two pairs of transistors in a turnoff state in the period of time of a frame when the other of the two pairs of transistors is operative.

公开(公告)号：IT1403945B1

公开(公告)日：2013-11-08

申请号：ITMI20110234

申请日：2011-02-17

Applicant: ST MICROELECTRONICS SRL ,  DORA SPA

Inventor： ODDONE GIORGIO ,  RIVA ALBERTO ,  ATTIANESE DOMENICO

公开(公告)号：DE602006009422D1

公开(公告)日：2009-11-05

申请号：DE602006009422

申请日：2006-03-17

Applicant: ST MICROELECTRONICS SRL ,  DORA SPA

Inventor： CAPPELLETTI ROBERTO ,  CANTONE GIUSEPPE ,  ANTONELLI BARBARA ,  CASTIGLIOLA ANTONELLO ,  LASCIANDARE ALESSANDRO ,  MARANO VINCENZO

IPC: H04B3/54

Abstract: An electronic synchronous/asynchronous transceiver device for power line communication networks is integrated into a single chip and operates from a single supply voltage. The transceiver device includes: at least an internal register that is programmable through a synchronous serial interface; at least a line driver for a two-way network communication over power lines implemented by a single ended power amplifier with direct accessible input and output lines that is part of a tunable active filter for the transmission path; and at least a couple of linear regulators for powering with different voltage levels different kind of external controllers linked to the transceiver device.

公开(公告)号：ITMI20021424A1

公开(公告)日：2003-12-29

申请号：ITMI20021424

申请日：2002-06-27

Applicant: ST MICROELECTRONICS SRL ,  DORA SPA

Inventor： PULVIRENTI FRANCESCO ,  SALA LEONARDO ,  PRIVITERA SALVATORE ,  PAPPALARDO SALVATORE

IPC: G02F1/133 ,  G09G3/20 ,  G09G3/36

Abstract: A system for driving columns of a liquid crystal display includes logic circuitry operating in a supply path between a first and a second supply voltage in which the first supply voltage is higher than the second supply voltage. The logic circuitry is capable of generating first logic signals and second logic signals whose value is equal to the first or second supply voltage. The system includes two level shifters coupled to the logic circuitry and operating in a supply path between a third supply voltage greater than the first supply voltage and the second supply voltage; the level shifters are capable of raising the value of the second logic signals. The system also includes a first and a second pair of transistors having different supply paths and having an output terminal in common; the first and the second pair of transistors are coupled to the level shifters to determine the drive signal of a column. The system includes turnoff circuitry operating in a supply path between the third and the second supply voltage and coupled to the two level shifters. The turnoff circuitry is capable of keeping one of the two pairs of transistors in a turnoff state in the period of time of a frame when the other of the two pairs of transistors is operative.

公开(公告)号：ITMI20120088A1

公开(公告)日：2013-07-27

申请号：ITMI20120088

申请日：2012-01-26

Applicant: DORA SPA ,  ST MICROELECTRONICS SRL

Inventor： ADRAGNA CLAUDIO ,  BIANCO ALBERTO

公开(公告)号：ITTO20070850A1

公开(公告)日：2009-05-27

申请号：ITTO20070850

申请日：2007-11-26

Applicant: DORA SPA

Inventor： BISAGLIA PAOLA ,  GUERRIERI LORENZO ,  GUERRINI ELEONORA ,  VERONESI DANIELE

公开(公告)号：ITMI20021426D0

公开(公告)日：2002-06-27

申请号：ITMI20021426

申请日：2002-06-27

Applicant: ST MICROELECTRONICS SRL ,  DORA SPA

Inventor： PULVIRENTI FRANCESCO ,  SALA LEONARDO ,  PRIVITERA SALVATORE ,  PAPPALARDO SALVATORE

IPC: G02F1/133 ,  G09G3/20 ,  G09G3/36

Abstract: The present invention describes a system for driving rows of a liquid crystal display including at least one module for driving one single row of the liquid crystal display. The module includes an inverter operating in a supply path between a first and a second supply line of the system, where the first supply line includes a first switch for coupling the inverter to a first or to a second supply voltage and the second supply line includes a second switch for coupling the inverter to a third or to a fourth supply voltage. The inverter is driven by logic circuitry and provides a drive signal for one single row of the liquid crystal display.