公开(公告)号：WO2003058328A1

公开(公告)日：2003-07-17

申请号：PCT/JP2002/013034

申请日：2002-12-12

Applicant: CASIO COMPUTER CO., LTD. ,  SHIRASAKI, Tomoyuki ,  YAMADA, Hiroyasu ,  HATTORI, Reiji

Inventor： SHIRASAKI, Tomoyuki ,  YAMADA, Hiroyasu ,  HATTORI, Reiji

IPC: G02F1/133

CPC classification number: G09G3/325 ,  G09G2300/0417 ,  G09G2300/0439 ,  G09G2300/0842 ,  G09G2300/0866 ,  H01L27/3244

Abstract: A B S T R A C T A display panel includes an optical element which has a pair of electrodes and exhibits an optical operation corresponding to an electric current flowing between the electrodes, and a switch circuit which supplies a memory current having a predetermined current value to a current line during a selection period, and stops the supply of the memory current to the current line during a non-selection period. A current memory circuit stores current data corresponding to the current value of the memory current flowing through the current line during the selection period and, in accordance with the current data stored during the selection period, supplies a display current having a current value substantially equal to the memory current to the optical element during the non-selection period.

Abstract translation: ABSTRACTA显示面板包括具有一对电极并且表现出对应于在电极之间流动的电流的光学操作的光学元件，以及开关电路，其在选择期间向当前行提供具有预定电流值的存储电流 ，并且在非选择期间内停止向当前行提供存储器电流。 当前存储电路存储对应于在选择期间流过当前行的存储电流的当前值的电流数据，并且根据在选择周期期间存储的当前数据，提供具有基本上等于 在非选择期间到光学元件的存储电流。

公开(公告)号：WO2004006218A2

公开(公告)日：2004-01-15

申请号：PCT/JP2003/008670

申请日：2003-07-08

Applicant: CASIO COMPUTER CO., LTD. ,  HATTORI, Reiji

Inventor： HATTORI, Reiji

IPC: G09G

CPC classification number: G09G3/3216 ,  G09G3/2014 ,  G09G3/3266 ,  G09G3/3283 ,  G09G2310/0248 ,  G09G2310/0297

Abstract: A driving device which supplies a current to a plurality of current?driven optical elements (Ep) to drive the optical elements includes at least a driving current supply circuit (133) which supplies a driving current to each optical element for a predetermined period, and a control voltage applying circuit (132) which applies a charge voltage having a voltage value corresponding to a voltage to be applied to each optical element using the driving current, before the driving current is supplied. The driving current supply circuit (133) includes a single constant current generating circuit (10A, 10B, 10C) which outputs a constant current having the same current value as that of a driving current, and a plurality of current storage circuits (30A, 30B, 30C) which sequentially receive and hold the constant current and output the driving current on the basis of the constant current.

Abstract translation: 向多个电流驱动光学元件（Ep）提供电流以驱动光学元件的驱动装置至少包括驱动电流供应电路（133），该驱动电流供应电路向每个光学元件提供预定时间段的驱动电流，以及 控制电压施加电路（132），其在提供驱动电流之前，施加具有与施加到每个光学元件的电压的电压值相对应的电压值的充电电压。 驱动电流供给电路（133）包括输出与驱动电流相同的电流值的恒定电流的单个恒定电流发生电路（10A，10B，10C），以及多个电流存储电路（30A，30B ，30C），其顺序地接收和保持恒定电流，并且基于恒定电流输出驱动电流。

公开(公告)号：WO2004003877A3

公开(公告)日：2004-01-08

申请号：PCT/JP2003/008153

申请日：2003-06-27

Applicant: CASIO COMPUTER CO., LTD. ,  HATTORI, Reiji

Inventor： HATTORI, Reiji

IPC: G09G3/32

Abstract: A current drive apparatus for an active matrix display operates a plurality of loads, e.g. organic or inorganic EL elements, by applying a current thereto. The apparatus includes a plurality of output terminals (Tout) to which the loads are respectively connected. A single current generation circuit (10A) comprising e.g. a digital to analogue converter and a current mirror, outputs an operating current having a predetermined current value. A plurality of current storage circuits (30A) are provided in accordance with the respective output terminals, sequentially sample and hold (40A) the operating current and then simultaneously output (EN) the drive currents based on the sampled operating currents to the respective output terminals. The operating current has a current value according to an input signal. The current storage circuit (30A) includes a voltage component holding section which samples the operating current outputted from the current generation circuit and holds a voltage component for driving a drive control current corresponding to a current value of the operating current for driving a second current mirror.

公开(公告)号：EP1430467B1

公开(公告)日：2011-02-23

申请号：EP03738528.3

申请日：2003-06-27

Applicant: CASIO COMPUTER CO., LTD. ,  Hattori, Reiji

Inventor： HATTORI, Reiji

IPC: G09G3/32

CPC classification number: G11C19/00 ,  G09G3/2011 ,  G09G3/2014 ,  G09G3/32 ,  G09G3/3216 ,  G09G3/325 ,  G09G3/3283 ,  G09G2300/0842 ,  G09G2300/0866 ,  G09G2310/0221 ,  G09G2310/027 ,  G09G2310/0294 ,  G11C5/14 ,  G11C27/028

Abstract: A current drive apparatus for an active matrix display operates a plurality of loads, e.g. organic or inorganic EL elements, by applying a current thereto. The apparatus includes a plurality of output terminals to which the loads are respectively connected. A single current generation circuit comprising e.g. a digital to analogue converter and a current mirror, outputs an operating current having a predetermined current value. A plurality of current storage circuits are provided in accordance with the respective output terminals, sequentially sample and hold the operating current and then simultaneously output the drive currents based on the sampled operating currents to the respective output terminals. The operating current has a current value according to an input signal. The current storage circuit includes a voltage component holding section which samples the operating current outputted from the current generation circuit and holds a voltage component for driving a drive control current corresponding to a current value of the operating current for driving a second current mirror.

公开(公告)号：EP1459126A1

公开(公告)日：2004-09-22

申请号：EP02790745.0

申请日：2002-12-12

Applicant: Casio Computer Co., Ltd.

Inventor： SHIRASAKI, Tomoyuki ,  YAMADA, Hiroyasu ,  HATTORI, Reiji

IPC: G02F1/133 ,  G09G3/36

CPC classification number: G09G3/325 ,  G09G2300/0417 ,  G09G2300/0439 ,  G09G2300/0842 ,  G09G2300/0866 ,  H01L27/3244

Abstract: A B S T R A C T A display panel includes an optical element which has a pair of electrodes and exhibits an optical operation corresponding to an electric current flowing between the electrodes, and a switch circuit which supplies a memory current having a predetermined current value to a current line during a selection period, and stops the supply of the memory current to the current line during a non-selection period. A current memory circuit stores current data corresponding to the current value of the memory current flowing through the current line during the selection period and, in accordance with the current data stored during the selection period, supplies a display current having a current value substantially equal to the memory current to the optical element during the non-selection period.

Abstract translation: ABSTRACTA显示面板包括具有一对电极并且呈现与在电极之间流动的电流相对应的光学操作的光学元件以及在选择时段期间将具有预定电流值的存储器电流提供给电流线的开关电路 并且在非选择期间停止向当前行提供存储器电流。 电流存储电路在选择期间存储与流过电流线的存储电流的电流值对应的电流数据，并根据在选择期间存储的电流数据，提供电流值基本上等于 在非选择时段期间到光学元件的存储器电流。

公开(公告)号：EP1459126B1

公开(公告)日：2007-01-24

申请号：EP02790745.0

申请日：2002-12-12

Applicant: CASIO COMPUTER CO., LTD.

Inventor： SHIRASAKI, Tomoyuki ,  YAMADA, Hiroyasu ,  HATTORI, Reiji

IPC: G09G3/36 ,  G02F1/133 ,  G02F1/1362

CPC classification number: G09G3/325 ,  G09G2300/0417 ,  G09G2300/0439 ,  G09G2300/0842 ,  G09G2300/0866 ,  H01L27/3244

Abstract: A B S T R A C T A display panel includes an optical element which has a pair of electrodes and exhibits an optical operation corresponding to an electric current flowing between the electrodes, and a switch circuit which supplies a memory current having a predetermined current value to a current line during a selection period, and stops the supply of the memory current to the current line during a non-selection period. A current memory circuit stores current data corresponding to the current value of the memory current flowing through the current line during the selection period and, in accordance with the current data stored during the selection period, supplies a display current having a current value substantially equal to the memory current to the optical element during the non-selection period.

公开(公告)号：EP1520266A2

公开(公告)日：2005-04-06

申请号：EP03762899.7

申请日：2003-07-08

Applicant: Casio Computer Co., Ltd. ,  Hattori, Reiji

Inventor： HATTORI, Reiji

IPC: G09G1/00

CPC classification number: G09G3/3216 ,  G09G3/2014 ,  G09G3/3266 ,  G09G3/3283 ,  G09G2310/0248 ,  G09G2310/0297

Abstract: A driving device which supplies a current to a plurality of current?driven optical elements (Ep) to drive the optical elements includes at least a driving current supply circuit (133) which supplies a driving current to each optical element for a predetermined period, and a control voltage applying circuit (132) which applies a charge voltage having a voltage value corresponding to a voltage to be applied to each optical element using the driving current, before the driving current is supplied. The driving current supply circuit (133) includes a single constant current generating circuit (10A, 10B, 10C) which outputs a constant current having the same current value as that of a driving current, and a plurality of current storage circuits (30A, 30B, 30C) which sequentially receive and hold the constant current and output the driving current on the basis of the constant current.

公开(公告)号：EP1430467A2

公开(公告)日：2004-06-23

申请号：EP03738528.3

申请日：2003-06-27

Applicant: Casio Computer Co., Ltd. ,  Hattori, Reiji

Inventor： HATTORI, Reiji

IPC: G09G1/00

CPC classification number: G11C19/00 ,  G09G3/2011 ,  G09G3/2014 ,  G09G3/32 ,  G09G3/3216 ,  G09G3/325 ,  G09G3/3283 ,  G09G2300/0842 ,  G09G2300/0866 ,  G09G2310/0221 ,  G09G2310/027 ,  G09G2310/0294 ,  G11C5/14 ,  G11C27/028

Abstract: A current drive apparatus for an active matrix display operates a plurality of loads, e.g. organic or inorganic EL elements, by applying a current thereto. The apparatus includes a plurality of output terminals to which the loads are respectively connected. A single current generation circuit comprising e.g. a digital to analogue converter and a current mirror, outputs an operating current having a predetermined current value. A plurality of current storage circuits are provided in accordance with the respective output terminals, sequentially sample and hold the operating current and then simultaneously output the drive currents based on the sampled operating currents to the respective output terminals. The operating current has a current value according to an input signal. The current storage circuit includes a voltage component holding section which samples the operating current outputted from the current generation circuit and holds a voltage component for driving a drive control current corresponding to a current value of the operating current for driving a second current mirror.