公开(公告)号：DE60142629D1

公开(公告)日：2010-09-02

申请号：DE60142629

申请日：2001-10-29

Applicant: TPO DISPLAYS CORP

Inventor： DUINEVELD PAULUS C ,  LIEDENBAUM COEN T ,  HASKAL ELIAV I ,  CAMPS IVO G

IPC: H01L27/32 ,  H01L51/50 ,  H01L27/00 ,  H01L51/52 ,  H05B33/10 ,  H05B33/12 ,  H05B33/22

公开(公告)号：DE60136389D1

公开(公告)日：2008-12-11

申请号：DE60136389

申请日：2001-12-21

Applicant: TPO DISPLAYS CORP

Inventor： SANFORD JAMES LAWRENCE ,  SCHLIG EUGENE STEWART

IPC: G09G1/00 ,  H01L51/50 ,  G09F9/30 ,  G09G3/20 ,  G09G3/30 ,  G09G3/32 ,  G11C11/419 ,  H01L27/32

Abstract: A pixel circuit comprises an organic light emitting diode (OLED), and a static memory for storing data that represents an operational state of the OLED. In alternative embodiments, a pixel circuit may include a complimentary metal oxide semiconductor (CMOS) circuit for controlling the OLED, a protection circuit for protecting the CMOS circuit from an over-voltage condition, and a current source with a field effect transistor (FET) having a static gate to source voltage that is greater than a threshold voltage of the FET.

公开(公告)号：DE69737733D1

公开(公告)日：2007-06-28

申请号：DE69737733

申请日：1997-12-17

Applicant: TPO DISPLAYS CORP

Inventor： GUHA SUPRATIK ,  HAIGHT RICHARD ALAN ,  KARASINSKI JOSEPH M ,  TROUTMAN RONALD R

IPC: H01L51/50 ,  H01L51/52 ,  H05B33/12 ,  H05B33/14 ,  H05B33/22 ,  H05B33/26

Abstract: Organic light emitting diodes having a transparent cathode structure are disclosed. The structure comprises a low work function metal in direct contact with the electron transport layer of the OLED covered by a layer of a wide bandgap semiconductor. Calcium is the preferred metal because of its relatively high optical transmissivity for a metal and because of its proven ability to form a good electron injecting contact to organic materials. ZnSe, ZnS or an alloy of these materials are the preferred semiconductors because of their good conductivity parallel to the direction of light emission, their ability to protect the underlying low work function metal and organic films and their transparency to the emitted light. Arrays of these diodes, appropriately wired, can be used to make a self-emissive display. When fabricated on a transparent substrate, such a display is at least partially transparent making it useful for heads-up display applications in airplanes and automobiles. Such a display can also be fabricated on an opaque substrate, such as silicon, in which previously fabricated devices and circuits can be used to drive the display.

公开(公告)号：AT412959T

公开(公告)日：2008-11-15

申请号：AT01272506

申请日：2001-12-21

Applicant: TPO DISPLAYS CORP

Inventor： SANFORD JAMES ,  SCHLIG EUGENE

IPC: G09G1/00 ,  H01L51/50 ,  G09F9/30 ,  G09G3/20 ,  G09G3/30 ,  G09G3/32 ,  G11C11/419 ,  H01L27/32

Abstract: A pixel circuit comprises an organic light emitting diode (OLED), and a static memory for storing data that represents an operational state of the OLED. In alternative embodiments, a pixel circuit may include a complimentary metal oxide semiconductor (CMOS) circuit for controlling the OLED, a protection circuit for protecting the CMOS circuit from an over-voltage condition, and a current source with a field effect transistor (FET) having a static gate to source voltage that is greater than a threshold voltage of the FET.

公开(公告)号：DE69637686D1

公开(公告)日：2008-10-30

申请号：DE69637686

申请日：1996-06-05

Applicant: TPO DISPLAYS CORP

Inventor： RIESS WALTER ,  STRITE SAMUEL CLAGETT

IPC: H01L33/00 ,  H01L51/50 ,  H01L51/52 ,  H05B33/02 ,  H05B33/10 ,  H05B33/12 ,  H05B33/14 ,  H05B33/22 ,  H05B33/26 ,  H05B33/28

Abstract: An organic light emitting device is provided having a substrate (60), an anode contact electrode (64), a cathode contact electrode (61), and an organic region (62, 63) in which electroluminescence takes place if a voltage is applied between the anode (64) and cathode (61). At least one of the electrodes (61, 64) comprises a non-degenerate wide bandgap semiconductor.

公开(公告)号：AT457509T

公开(公告)日：2010-02-15

申请号：AT06744939

申请日：2006-05-15

Applicant: TPO DISPLAYS CORP

Inventor： SMITS WILHELMUS ,  VAN LIER WILHELMUS ,  RUIGT DOLF ,  DERCKX HENRICUS

IPC: G09G3/20

Abstract: The present invention relates to a method of driving a display comprising: receiving grey level input data, comprising a subpixel input data consisting of N bits, from an external image data source; mapping the L upper bits of the N-bit subpixel input data to an L-bit first mapped data, where L≦̸(N−1); generating an additional bit of mapped data; using the lower N-L bits of said N-bit subpixel input data for a control operation; including providing a driver data consisting of L+1 bits, based on the first mapped data and the additional bit of mapped data, to a driver circuit; and controlling the driver circuit to output driving voltages set in relation to the driver data, to a display element, wherein the total number of voltage levels correspond to the maximum value representable by the L bits, plus one. The control operation further comprises, performing frame mixing comprising providing said driver data as either representing said first mapped data or an increment thereof. The additional bit is, inter alia, used to enable representation of said increment.

公开(公告)号：AT406645T

公开(公告)日：2008-09-15

申请号：AT02785742

申请日：2002-11-21

Applicant: TPO DISPLAYS CORP

Inventor： CHILDS MARK

IPC: G09G3/32 ,  H01L51/50 ,  G09G3/20 ,  G09G3/30 ,  H04N5/70

Abstract: An electroluminescent (EL) display device comprises an array of display pixels, each display pixel comprising an EL display element and a driving circuit. A digital pixel drive signal determines whether the pixel is on or off, and a selected one of a plurality of supply voltages is switched to the EL display element. This device enables a digital drive scheme to be implemented, but the provision of a plurality of different supply voltages enables a grey scale to be implemented without requiring time or area ratio systems to be employed. Alternatively, the device of the invention can allow time or area ratio techniques to be improved.

公开(公告)号：DE602004022394D1

公开(公告)日：2009-09-17

申请号：DE602004022394

申请日：2004-03-23

Applicant: TPO DISPLAYS CORP

Inventor： GIRALDO ANDREA ,  JOHNSON MARK T ,  FISH DAVID A

IPC: G09G3/32

Abstract: The invention relates to a display device (6;6') comprising a display (2) having a plurality of display pixels (3;3') with light emitting elements (LED) and at least a first drive element (T1) and a second drive element (T2) for driving said light emitting elements (LED) in accordance with an analogue data signal, representing at least one frame in a range from low to high overall light emission states for said display (2). The display device (6;6') further comprises a display controller (10) having a data input (9) for the analogue data signal, a sensing unit (16) adapted to evaluate the overall light emission state of said frame and an output (13) for generating at least one sparkling signal for the one or more display pixels (3;3') having a high light emission state (18) exceeding a sensed low overall light emission state of said frame. The display controller (10) is arranged to individually control said first drive element (T1) and said second drive element (T2) by said sparkling signal such that said one or more display pixels (3;3') having said high light emission state are driven by at least one of said drive elements (T1,T2) in a sparkling light emission state (18';18'') exceeding said high light emission state (18).

公开(公告)号：AT438909T

公开(公告)日：2009-08-15

申请号：AT04722607

申请日：2004-03-23

Applicant: TPO DISPLAYS CORP

Inventor： GIRALDO ANDREA ,  JOHNSON MARK ,  FISH DAVID

IPC: G09G3/32

Abstract: The invention relates to a display device (6;6') comprising a display (2) having a plurality of display pixels (3;3') with light emitting elements (LED) and at least a first drive element (T1) and a second drive element (T2) for driving said light emitting elements (LED) in accordance with an analogue data signal, representing at least one frame in a range from low to high overall light emission states for said display (2). The display device (6;6') further comprises a display controller (10) having a data input (9) for the analogue data signal, a sensing unit (16) adapted to evaluate the overall light emission state of said frame and an output (13) for generating at least one sparkling signal for the one or more display pixels (3;3') having a high light emission state (18) exceeding a sensed low overall light emission state of said frame. The display controller (10) is arranged to individually control said first drive element (T1) and said second drive element (T2) by said sparkling signal such that said one or more display pixels (3;3') having said high light emission state are driven by at least one of said drive elements (T1,T2) in a sparkling light emission state (18';18'') exceeding said high light emission state (18).

公开(公告)号：EP1887550A3

公开(公告)日：2010-01-20

申请号：EP07112557.9

申请日：2007-07-16

Applicant: TPO Displays Corp.

Inventor： Wang, Shou-Cheng ,  Chang, Shih-Chang

IPC: G09G3/32

CPC classification number: G09G3/006 ,  G09G3/3225 ,  G09G2300/0809 ,  G09G2310/0297 ,  G09G2320/0285 ,  G09G2320/0295 ,  G09G2360/16

Abstract: The invention relates to a system for displaying images comprising a pixel array, a conversion circuit, a memory device, and a compensation circuit. The pixel array has a plurality of pixels, each having at least one organic light emitting element equipped with a sensing unit which retrieves display information when the organic light emitting element retrieves a test signal. The conversion circuit determines a display parameter of each organic light emitting element according to the test signal and the display information of each organic light emitting element. The memory device stores the display parameter of each organic light emitting element. The compensation circuit modifies a video signal in accordance with the display parameters stored in the memory device.