公开(公告)号：EP1695329B1

公开(公告)日：2012-11-07

申请号：EP04804802.9

申请日：2004-12-14

Applicant: Thomson Licensing

Inventor： WEITBRUCH, Sébastien ,  THEBAULT, Cédric ,  DOSER, Ingo

IPC: G09G3/28

CPC classification number: G09G3/2029 ,  G09G3/204 ,  G09G3/28 ,  G09G2320/0247 ,  G09G2320/0266 ,  G09G2320/0285 ,  G09G2320/103 ,  H04N7/0112 ,  Y10S348/91

公开(公告)号：EP2422339A4

公开(公告)日：2012-10-31

申请号：EP10767754

申请日：2010-04-22

Applicant: GLOBAL OLED TECHNOLOGY LLC

Inventor： MIZUKOSHI SEIICHI ,  KOHNO MAKOTO ,  ONOMURA KOUICHI

IPC: G09G5/10 ,  G09G3/32

CPC classification number: G09G3/3233 ,  G09G3/2055 ,  G09G3/2092 ,  G09G3/3275 ,  G09G5/39 ,  G09G2300/0842 ,  G09G2310/027 ,  G09G2320/0233 ,  G09G2320/0247 ,  G09G2320/0285 ,  G09G2320/043 ,  G09G2320/0673 ,  G09G2360/16 ,  G09G2360/18

Abstract: The rate of reading from a memory for storing display irregularity correction data is lowered. At the time of display, calculation is carried out in a correction calculation section 12 using an input signal and correction data in RAM 22, and brightness inconsistency correction is carried out. The way in which correction calculation is carried out in the correction calculation section 12 is changed for every frame.

公开(公告)号：EP2455933A3

公开(公告)日：2012-08-22

申请号：EP11184404.9

申请日：2011-10-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kim, Ah-Reum ,  Lee, Jun-Pyo ,  Ahn, Ik-Hyun ,  Kim, Kang-Min

IPC: G09G3/36 ,  H04N13/00

CPC classification number: G09G3/003 ,  G09G3/3614 ,  G09G3/3659 ,  G09G2300/0443 ,  G09G2300/0842 ,  G09G2300/0852 ,  G09G2320/0233 ,  G09G2320/0252 ,  G09G2320/0285 ,  G09G2330/023 ,  G09G2340/16 ,  H04N13/286 ,  H04N13/341

Abstract: In a method of driving a display panel, a first data voltage having a first potential difference with respect to a reference voltage is outputted to pixel units of the display panel during a first frame which the data voltage has a same polarity with respect to the reference voltage as a data voltage of a following frame, and a second data voltage having a second potential difference less than the first potential difference is output to pixel units of the display panel during a second frame in which the data voltage has a polarity with respect to the reference voltage that is reversed with respect to a data voltage of a following frame.

公开(公告)号：EP2447937A1

公开(公告)日：2012-05-02

申请号：EP11186939.2

申请日：2011-10-27

Applicant: Hitachi Displays, Ltd. ,  Panasonic Liquid Crystal Display Co., Ltd.

Inventor： Sasanuma, Keita ,  Aoki, Yoshinori

IPC: G09G3/36

CPC classification number: G09G5/18 ,  G02F1/134336 ,  G02F1/134363 ,  G09G3/3614 ,  G09G3/3655 ,  G09G3/3696 ,  G09G2300/0408 ,  G09G2300/0866 ,  G09G2300/0876 ,  G09G2310/0283 ,  G09G2320/0285

Abstract: Provided is a display device capable of improving the display quality by suppressing the influence of a difference in hold voltage in a pixel circuit occurring between forward scanning driving and backward scanning driving. The display device includes: a data signal line (107); a plurality of pixel circuits; a plurality of gate signal lines (105); a gate signal line driving circuit (112, 114) for performing any one of forward scanning driving and backward scanning driving and performs gate overlapping driving; a data signal line driving circuit (115); and a reference voltage line driving circuit (10) for supplying a reference voltage. The reference voltage line driving circuit (10) selects and supplies a reference voltage for forward direction and a reference voltage for reverse direction, during the forward scanning driving and the backward scanning driving, respectively.

Abstract translation: 本发明提供一种显示装置，其能够通过抑制在正向扫描驱动和反向扫描驱动之间产生的像素电路中的保持电压的差异的影响来提高显示品质。 该显示装置包括：数据信号线（107）; 多个像素电路; 多个栅极信号线（105）; 用于执行正向扫描驱动和反向扫描驱动中的任何一个并执行栅极重叠驱动的栅极信号线驱动电路（112,114） 数据信号线驱动电路（115）; 和用于提供参考电压的参考电压线驱动电路（10）。 在正向扫描驱动和反向扫描驱动期间，参考电压线驱动电路（10）分别选择并提供正向参考电压和反向参考电压。

公开(公告)号：EP1231592B1

公开(公告)日：2012-05-02

申请号：EP02002875.9

申请日：2002-02-08

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kimura, Hajime

IPC: G09G3/32

CPC classification number: G09G3/14 ,  G09G3/2022 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2300/0842 ,  G09G2300/0866 ,  G09G2320/0223 ,  G09G2320/0242 ,  G09G2320/0285 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2330/02 ,  H01L27/3244 ,  H01L27/3295

公开(公告)号：EP2404293A1

公开(公告)日：2012-01-11

申请号：EP10706864.5

申请日：2010-02-25

Applicant: Global OLED Technology LLC

Inventor： LEVEY, Charles I. ,  HAMER, John W.

IPC: G09G3/32

CPC classification number: G09G3/3208 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2320/0693 ,  G09G2340/10 ,  G09G2360/16

Abstract: Subpixels on an electroluminescent (EL) display panel, such as an organic light-emitting diode (OLED) panel, are compensated for initial nonuniformity (“mura”) and for aging effects such as threshold voltage Vth shift, EL voltage Voled shift, and OLED efficiency loss. The drive current of each subpixel is measured at one or more measurement reference gate voltages to form status signals representing the characteristics of the drive transistor and EL emitter of those subpixels. Current measurements are taken in the linear region of drive transistor operation to improve signal-to-noise ratio in systems such as modern LTPS PMOS OLED displays, which have relatively small Voled shift over their lifetimes and thus relatively small current change due to channel-length modulation. Various sources of noise are also suppressed to further increase signal-to-noise ratio.

公开(公告)号：EP2351013A1

公开(公告)日：2011-08-03

申请号：EP09756586.5

申请日：2009-11-12

Applicant: Global OLED Technology LLC

Inventor： LEON, Felipe, Antonio ,  WHITE, Chrisopher, Jason ,  PARRETT, Gary ,  PRIMERANO, Bruno

IPC: G09G3/32

CPC classification number: G09G3/3233 ,  G09G3/2092 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2320/0693 ,  G09G2360/16

Abstract: An electroluminescent (EL) panel with 2T1C subpixels is compensated for initial nonuniformity ("mura"). The current of each subpixel is measured at a selected time to provide a status signal representing the characteristics of the subpixel. A compensator receives a linear code value and changes it according to the status signals. A linear source driver drives the panel with the changed code values.

公开(公告)号：EP2329486A1

公开(公告)日：2011-06-08

申请号：EP09788088.4

申请日：2009-09-28

Applicant: Casio Computer Co., Ltd.

Inventor： TAKEI, Manabu ,  OZAKI, Tsuyoshi ,  KASHIYAMA, Shunji

IPC: G09G3/32

CPC classification number: G09G3/3291 ,  G09G2310/0297 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/0295 ,  G09G2320/043

Abstract: A pixel drive device that drives a pixel array including pixels connected to input/output terminals includes: a connection unit including connection terminals whose number is fewer than a number of the input/output terminals; and a connection switching unit that switches connection between the connection terminals and the input/output terminals. The input/output terminals of the pixel array are divided into a plurality of blocks each including a predetermined number of input/output terminals that is equal to/smaller than the number of connection terminals. The connection switching unit sequentially connects the connection terminals and the input/output terminals of each of the blocks, and sets the connection order of connecting the input/output terminals of each block to the connection terminals, such that adjoining two of the input/output terminals belonging to adjoining two of the blocks are connected to the same one of the connection terminals.

公开(公告)号：EP2329485A1

公开(公告)日：2011-06-08

申请号：EP09788089.2

申请日：2009-09-28

Applicant: Casio Computer Co., Ltd.

Inventor： TAKEI, Manabu ,  OGURA, Jun ,  KASHIYAMA, Shunji ,  OZAKI, Tsuyoshi

IPC: G09G3/30 ,  G09G3/32

CPC classification number: G09G3/3233 ,  G09G3/30 ,  G09G3/3291 ,  G09G2300/0842 ,  G09G2300/0866 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/0295 ,  G09G2320/043

Abstract: A data acquisition circuit (161, 162) sets one of the potential value at one end of a signal line and the value of a current flown thereto when one end of a current path of a drive device (T3) is connected to a light emitting device with the other end thereof set to a potential value where no current flows to the light emitting device (111). Then the circuit causes current to flow via the current path and the signal line and acquires one of the value of the current flown to the signal line and the potential value at the one end of the signal line according to the set value. A correction operation circuit (132) acquires a threshold voltage and a current amplification factor of the drive device based on one of the current and potential values thus acquired as well as on one of the potential and current values thus set.

公开(公告)号：EP2325834A1

公开(公告)日：2011-05-25

申请号：EP09814373.8

申请日：2009-06-24

Applicant: Sharp Kabushiki Kaisha

Inventor： TSUCHIYA, Toshikazu ,  KAWABATA, Masae ,  SHIMOSHIKIRYOH, Fumikazu

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

CPC classification number: G09G3/2011 ,  G09G3/2092 ,  G09G3/3614 ,  G09G3/3648 ,  G09G2310/0218 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2320/0247 ,  G09G2320/0276 ,  G09G2320/0285

Abstract: The present invention has as an object to reduce display unevenness that occurs under the influence of a coupling between a first pixel in which a green component is displayed and a data signal line by which second pixel is driven. The present invention includes a correction process section (21) for obtaining pixel data on a second pixel in which a blue component or a red component is displayed, the second pixel being driven by a data signal line adjacent to a first pixel in which a green component is displayed, and for, if the pixel data on the second pixel represents a tone value falling within a range of 0 to a predetermined first value, correcting the tone value to be the first value.

Abstract translation: 本发明的目的在于减少在显示绿色分量的第一像素和驱动第二像素的数据信号线之间的耦合的影响下出现的显示不均匀性。 本发明包括用于获得显示蓝色分量或红色分量的第二像素上的像素数据的校正处理部分（21），第二像素由与第一像素相邻的数据信号线驱动，其中第一像素 分量被显示，并且如果第二像素上的像素数据表示落在0到预定第一值的范围内的色调值，则将色调值校正为第一值。