公开(公告)号：US09947293B2

公开(公告)日：2018-04-17

申请号：US15165435

申请日：2016-05-26

Applicant: Ignis Innovation Inc.

Inventor： Gholamreza Chaji

IPC: G09G3/00 ,  G09G5/02 ,  G09G3/3225

CPC classification number: G09G5/026 ,  G09G3/3225 ,  G09G2320/0223 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/041 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2340/04 ,  G09G2350/00

Abstract: What is disclosed are systems and methods of compensation of images produced by active matrix light emitting diode device (AMOLED) and other emissive displays. Sub-sampling of pixel measurement data utilized in compensation of the display is utilized to reduce the data bandwidth between memory and a compensation module where the data is locally interpolated.

公开(公告)号：US09940861B2

公开(公告)日：2018-04-10

申请号：US15649065

申请日：2017-07-13

Applicant: Ignis Innovation Inc.

Inventor： Gholamreza Chaji ,  Yaser Azizi

IPC: G09G3/00 ,  G09G1/00 ,  G09G3/3233 ,  G09G3/3225 ,  G09G3/32 ,  G09G3/18 ,  G09G1/12

CPC classification number: G09G3/006 ,  G09G1/002 ,  G09G1/12 ,  G09G3/00 ,  G09G3/18 ,  G09G3/32 ,  G09G3/3225 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0251 ,  G09G2320/0223 ,  G09G2320/0295 ,  G09G2320/045 ,  G09G2320/0693 ,  G09G2330/10 ,  G09G2330/12

Abstract: A method for characterizing and eliminating the effect of propagation delay on data and monitor lines of AMOLED panels is introduced. A similar technique may be utilized to cancel the effect of incomplete settling of select lines that control the write and read switches of pixels on a row.

公开(公告)号：US09881532B2

公开(公告)日：2018-01-30

申请号：US14286711

申请日：2014-05-23

Applicant: Ignis Innovation Inc.

Inventor： Gholamreza Chaji

IPC: G09G3/00 ,  G09G3/32 ,  G09G3/3291

CPC classification number: G09G3/006 ,  G09G3/32 ,  G09G3/3291 ,  G09G2300/0413 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2360/145

Abstract: A system for determining the efficiency degradation of an organic light emitting device (OLED) in an array-based semiconductor device having an array of pixels that include OLEDs. The system determines the relationship between changes in an electrical operating parameter of the OLEDs and the efficiency degradation of said OLEDs, for at least one stress condition; measures a change in the electrical operating parameter of the OLEDs; determines the stress condition of at least one pixel or group of pixels in the semiconductor device; and uses the determined relationship and the determined stress condition to determine the efficiency degradation of the OLEDs corresponding to the measured change in the electrical operating parameter of the OLEDs.

公开(公告)号：US09852689B2

公开(公告)日：2017-12-26

申请号：US15266474

申请日：2016-09-15

Applicant: Ignis Innovation Inc.

Inventor： Arokia Nathan ,  Yuriy Vygranenko ,  Shahin Jafarabadiashtiani ,  Peyman Servati

IPC: G09G5/10 ,  G09G3/3241 ,  H05B37/02 ,  G09G3/3266 ,  G09G3/3283 ,  G09G3/325 ,  H05B33/08

CPC classification number: G09G3/3241 ,  G09G3/325 ,  G09G3/3266 ,  G09G3/3283 ,  G09G2300/0417 ,  G09G2300/0809 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2320/0646 ,  H05B33/0896 ,  H05B37/0209

Abstract: A technique for driving a column of pixels that include light emitting elements. The technique incorporates feedback data provided from feedback data sources connected to the data line and to feedback line of the array, pixel driving circuit with feedback path. The technique can also include block of the reference elements for input signal corrections.

公开(公告)号：US09818376B2

公开(公告)日：2017-11-14

申请号：US14699752

申请日：2015-04-29

Applicant: Ignis Innovation Inc.

Inventor： Gholamreza Chaji ,  Arokia Nathan

IPC: G09G5/00 ,  G09G5/18 ,  G09G3/3283 ,  G09G3/3291 ,  G09G3/3225

CPC classification number: G09G5/18 ,  G09G3/3225 ,  G09G3/3283 ,  G09G3/3291 ,  G09G2300/0465 ,  G09G2300/0814 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/0218 ,  G09G2310/0262 ,  G09G2320/0233 ,  G09G2320/0693

Abstract: A technique for improving the spatial and/or temporal uniformity of a light-emitting display by providing a faster calibration of reference current sources and reducing the noise effect by improving the dynamic range, despite instability and non-uniformity of the transistor devices. A calibration circuit for a display panel having an active area having a plurality of light emitting devices arranged on a substrate, and a peripheral area of the display panel separate from the active area is provided. The calibration circuit includes a first row of calibration current source or sink circuits and a second row of calibration current source or sink circuits. A first calibration control line is configured to cause the first row of calibration current source or sink circuits to calibrate the display panel with a bias current while the second row of calibration current source or sink circuits is being calibrated by a reference current. A second calibration control line is configured to cause the second row of calibration current source or sink circuits to calibrate the display panel with the bias current while the first row of calibration current source or sink circuits is being calibrated by the reference current.

公开(公告)号：US09805653B2

公开(公告)日：2017-10-31

申请号：US15090769

申请日：2016-04-05

Applicant: Ignis Innovation Inc.

Inventor： Arokia Nathan ,  Gholamreza Chaji

IPC: G09G5/02 ,  G09G3/3233 ,  G09G3/3258

CPC classification number: G09G3/3233 ,  G09G3/3258 ,  G09G2300/043 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0852 ,  G09G2310/0216 ,  G09G2310/0218 ,  G09G2310/0221 ,  G09G2310/0283 ,  G09G2320/0233 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2330/021

Abstract: A method and system for driving a light emitting device display is provided. The system provides a timing schedule which increases accuracy in the display. The system may provide the timing schedule by which an operation cycle is implemented consecutively in a group of rows. The system may provide the timing schedule by which an aging factor is used for a plurality of frames.

公开(公告)号：US20170309210A1

公开(公告)日：2017-10-26

申请号：US15649065

申请日：2017-07-13

Applicant: Ignis Innovation Inc.

Inventor： Gholamreza Chaji ,  Yaser Azizi

IPC: G09G3/00 ,  G09G1/00 ,  G09G3/32 ,  G09G3/3225 ,  G09G3/3233 ,  G09G1/12 ,  G09G3/18

CPC classification number: G09G3/006 ,  G09G1/002 ,  G09G1/12 ,  G09G3/00 ,  G09G3/18 ,  G09G3/32 ,  G09G3/3225 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0251 ,  G09G2320/0223 ,  G09G2320/0295 ,  G09G2320/045 ,  G09G2320/0693 ,  G09G2330/10 ,  G09G2330/12

Abstract: A method for characterizing and eliminating the effect of propagation delay on data and monitor lines of AMOLED panels is introduced. A similar technique may be utilized to cancel the effect of incomplete settling of select lines that control the write and read switches of pixels on a row.

公开(公告)号：US20170287398A1

公开(公告)日：2017-10-05

申请号：US15630142

申请日：2017-06-22

Applicant: Ignis Innovation Inc.

Inventor： Jaimal Soni ,  Ricky Yik Hei Ngan ,  Gholamreza Chaji ,  Nino Zahirovic ,  Joseph Marcel Dionne

IPC: G09G3/3291 ,  G09G3/325 ,  G09G3/3258

CPC classification number: G09G3/3233 ,  G09G3/325 ,  G09G3/3258 ,  G09G3/3291 ,  G09G2300/0809 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045

Abstract: The OLED voltage of a selected pixel is extracted from the pixel produced when the pixel is programmed so that the pixel current is a function of the OLED voltage. One method for extracting the OLED voltage is to first program the pixel in a way that the current is not a function of OLED voltage, and then in a way that the current is a function of OLED voltage. During the latter stage, the programming voltage is changed so that the pixel current is the same as the pixel current when the pixel was programmed in a way that the current was not a function of OLED voltage. The difference in the two programming voltages is then used to extract the OLED voltage.

公开(公告)号：USRE46561E1

公开(公告)日：2017-09-26

申请号：US14477037

申请日：2014-09-04

Applicant: Ignis Innovation Inc.

Inventor： Gholamreza Chaji ,  Kongning Li ,  Vasudha Gupta ,  Arokia Nathan

IPC: G09G5/10 ,  G09G3/36 ,  G09G3/20 ,  G09G3/3266 ,  G09G3/3275

CPC classification number: G09G3/3696 ,  G09G3/20 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/3677 ,  G09G3/3688 ,  G09G2300/0452 ,  G09G2310/0218 ,  G09G2310/0267 ,  G09G2310/027 ,  G09G2310/0286 ,  G09G2310/0294 ,  G09G2310/0297 ,  G09G2320/0276 ,  G09G2320/0673

Abstract: A display system includes a driver for operating a panel having a plurality of pixels arranged by a plurality of first lines and at least one second line The driver includes a driver output unit for providing to the panel a single driver output for activating the plurality of first lines, the single driver output being demultiplexed on the panel to activate each first line.

公开(公告)号：US09773441B2

公开(公告)日：2017-09-26

申请号：US15223437

申请日：2016-07-29

Applicant: Ignis Innovation Inc.

Inventor： Gholamreza Chaji ,  Javid Jaffari ,  Arokia Nathan

IPC: G09G3/34 ,  G09G3/00 ,  G09G3/32 ,  G09G3/3258 ,  G09G3/3291

CPC classification number: G09G3/006 ,  G09G3/32 ,  G09G3/3258 ,  G09G3/3291 ,  G09G2300/0413 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2360/145

Abstract: A system and method for determining and applying characterization correlation curves for aging effects on an organic light organic light emitting device (OLED) based pixel is disclosed. A first stress condition is applied to a reference pixel having a drive transistor and an OLED. An output voltage based on a reference current is measured periodically to determine an electrical characteristic of the reference pixel under the first predetermined stress condition. The luminance of the reference pixel is measured periodically to determine an optical characteristic of the reference pixel. A characterization correlation curve corresponding to the first stress condition including the determined electrical and optical characteristic of the reference pixel is stored. The stress condition of an active pixel is determined and a compensation voltage is determined by correlating the stress condition of the active pixel with curves of the predetermined stress conditions.