公开(公告)号：WO2004003883A1

公开(公告)日：2004-01-08

申请号：PCT/EP2003/006639

申请日：2003-06-23

Applicant: STMICROELECTRONICS S.R.L. ,  DORA S.P.A. ,  PAPPALARDO, Salvatore ,  PULVIRENTI, Francesco ,  PRIVITERA, Salvatore ,  SALA, Leonardo

Inventor： PAPPALARDO, Salvatore ,  PULVIRENTI, Francesco ,  PRIVITERA, Salvatore ,  SALA, Leonardo

IPC: G09G3/36

CPC classification number: G09G3/3681 ,  G09G3/3674

Abstract: The present invention describes a system for driving rows of a liquid crystal display comprising at least one module (10) for driving one single row of the liquid crystal display. The module comprises an inverter (T11-T12) operating in a supply path between a first (21) and a second (22) supply line of the system, where the first supply line (21) comprises first means (S1) capable of connecting it to a first (VLCD) or to a second (VA) supply voltage and the second supply line (22) comprises second means (S2) capable of connecting it to a third (VB) or to a fourth (VSS) supply voltage. The inverter (T11-T12) is driven by a logic circuitry (11-12) and sends in output (OUT) a drive signal for one single row of the liquid crystal display.

Abstract translation: 本发明描述了一种用于驱动液晶显示器行的系统，包括用于驱动液晶显示器的一行的至少一个模块（10）。 该模块包括在系统的第一（21）和第二（22）电源线之间的供应路径中工作的逆变器（T11-T12），其中第一供电线（21）包括能够连接的第一装置（S1） 第二电源线（22）包括能够将其连接到第三（VB）或第四（VSS）电源电压的第二装置（S2）。 逆变器（T11-T12）由逻辑电路（11-12）驱动，并向输出（OUT）发送一行液晶显示器的驱动信号。

公开(公告)号：WO2004003882A1

公开(公告)日：2004-01-08

申请号：PCT/EP2003/006638

申请日：2003-06-23

Applicant: STMICROELECTRONICS S.R.L. ,  DORA S.P.A. ,  PAPPALARDO, Salvatore ,  PULVIRENTI, Francesco ,  PRIVITERA, Salvatore ,  SALA, Leonardo

Inventor： PAPPALARDO, Salvatore ,  PULVIRENTI, Francesco ,  PRIVITERA, Salvatore ,  SALA, Leonardo

IPC: G09G3/36

CPC classification number: G09G3/3685 ,  G09G2330/021

Abstract: The present invention refers to a system for driving columns of a liquid crystal display comprising a logic circuitry (10) operating in a supply path between a first (VDD) and a second (VSS) supply voltage in which the first supply voltage is (VDD) higher than the second supply voltage (VSS). The logic circuitry (10) is capable of generating starting from the first logic signals (LOW_FRAME, WHITE_PIX) in input second logic signals (CP, CN, CP_N, CN_N) in output whose value is equal to the first (VDD) or second (VSS) supply voltage. The device comprises two elevator devices (11, 12) coupled to the logic circuitry (10) and operating in a supply path between a third supply voltage (VLCD) greater than the first supply voltage (VDD) and the second supply voltage (VSS); the elevator devices (11, 12) are capable of raising the value of the second logic signals (CP, CN, CP_N, CN_N). The device also comprises a first (T11-T12) and a second (T13-T14) pair of transistors shaving different supply paths (VLCD-VA, VB-VSS) and having an output terminal (OUT) in common; the first (T11-T12) and the second (T13-T14) pair of transistors are connected to the elevator devices (11, 12) so as to determine the drive signal of a column. The device comprises turnoff circuitry (15) operating in a supply path between the third (VLCD) and the second supply voltage (VSS) and coupled to the two elevator devices (11, 12). The circuitry (15) is capable of keeping one of the two pairs of transistors (T11-T12, T13-T14) in a turnoff state in the period of time of a frame when the other of the two pairs of transistors (T11-T12, T13-T14) is in operative conditions.

Abstract translation: 本发明涉及一种用于驱动液晶显示器列的系统，其包括在第一电源电压（VDD）和第二（VSS）电源电压之间的供电路径中工作的逻辑电路（10），其中第一电源电压为（VDD ）高于第二电源电压（VSS）。 逻辑电路（10）能够从其值等于第一（VDD）或第二（VDD）的输出中的输入第二逻辑信号（CP，CN，CP_N，CN_N）中的第一逻辑信号（LOW_FRAME，WHITE_PIX） VSS）电源电压。 该装置包括耦合到逻辑电路（10）并且在大于第一电源电压（VDD）和第二电源电压（VSS））的第三电源电压（VLCD）之间的供电路径中操作的两个电梯装置（11,12） ; 电梯装置（11,12）能够提高第二逻辑信号（CP，CN，CP_N，CN_N）的值。 该器件还包括共用剃须不同电源路径（VLCD-VA，VB-VSS）并具有输出端（OUT）的第一（T11-T12）和第二（T13-T14）对晶体管; 第一（T11-T12）和第二（T13-T14）晶体管对连接到电梯装置（11,12），以便确定列的驱动信号。 该装置包括在第三（VLCD）和第二电源电压（VSS）之间的供应路径中工作并耦合到两个电梯装置（11,12）的关闭电路（15）。 当两对晶体管（T11-T12）中的另一对晶体管（T11-T12）的一对晶体管（T11-T12-T12）中的另一个晶体管 ，T13-T14）处于工作状态。

公开(公告)号：EP1532614A1

公开(公告)日：2005-05-25

申请号：EP03761493.0

申请日：2003-06-23

Applicant: STMicroelectronics S.r.l. ,  Dora S.p.A.

Inventor： PAPPALARDO, Salvatore ,  PULVIRENTI, Francesco ,  PRIVITERA, Salvatore ,  SALA, Leonardo

IPC: G09G3/36

CPC classification number: G09G3/3685 ,  G09G2330/021

Abstract: The present invention refers to a system for driving columns of a liquid crystal display comprising a logic circuitry (10) operating in a supply path between a first (VDD) and a second (VSS) supply voltage in which the first supply voltage is (VDD) higher than the second supply voltage (VSS). The logic circuitry (10) is capable of generating starting from the first logic signals (LOW_FRAME, WHITE_PIX) in input second logic signals (CP, CN, CP_N, CN_N) in output whose value is equal to the first (VDD) or second (VSS) supply voltage. The device comprises two elevator devices (11, 12) coupled to the logic circuitry (10) and operating in a supply path between a third supply voltage (VLCD) greater than the first supply voltage (VDD) and the second supply voltage (VSS); the elevator devices (11, 12) are capable of raising the value of the second logic signals (CP, CN, CP_N, CN_N). The device also comprises a first (T11-T12) and a second (T13-T14) pair of transistors shaving different supply paths (VLCD-VA, VB-VSS) and having an output terminal (OUT) in common; the first (T11-T12) and the second (T13-T14) pair of transistors are connected to the elevator devices (11, 12) so as to determine the drive signal of a column. The device comprises turnoff circuitry (15) operating in a supply path between the third (VLCD) and the second supply voltage (VSS) and coupled to the two elevator devices (11, 12). The circuitry (15) is capable of keeping one of the two pairs of transistors (T11-T12, T13-T14) in a turnoff state in the period of time of a frame when the other of the two pairs of transistors (T11-T12, T13-T14) is in operative conditions.

公开(公告)号：EP1518219A1

公开(公告)日：2005-03-30

申请号：EP03740320.1

申请日：2003-06-23

Applicant: STMicroelectronics S.r.l. ,  Dora S.p.A.

Inventor： PAPPALARDO, Salvatore ,  PULVIRENTI, Francesco ,  PRIVITERA, Salvatore ,  SALA, Leonardo

IPC: G09G3/36

CPC classification number: G09G3/3681 ,  G09G3/3674

Abstract: The present invention describes a system for driving rows of a liquid crystal display comprising at least one module (10) for driving one single row of the liquid crystal display. The module comprises an inverter (T11-T12) operating in a supply path between a first (21) and a second (22) supply line of the system, where the first supply line (21) comprises first means (S1) capable of connecting it to a first (VLCD) or to a second (VA) supply voltage and the second supply line (22) comprises second means (S2) capable of connecting it to a third (VB) or to a fourth (VSS) supply voltage. The inverter (T11-T12) is driven by a logic circuitry (11-12) and sends in output (OUT) a drive signal for one single row of the liquid crystal display.