公开(公告)号：US20240112634A1

公开(公告)日：2024-04-04

申请号：US18529634

申请日：2023-12-05

Applicant: Ignis Innovation Inc.

Inventor： GHOLAMREZA CHAJI

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G3/006 ,  G09G2320/043

Abstract: Methods of compensating for common unwanted signals present in pixel data measurements of a pixel circuit in a display having a plurality of pixel circuits each including a storage device, a drive transistor, and a light emitting device. First pixel data is measured from a first pixel circuit through a monitor line. Second pixel data from the first pixel circuit or a second pixel circuit is measured through the monitor line or another monitor line. The first measured pixel data or the second measured pixel data or both are used to clean the other of the first measured pixel data or the second measured pixel data of common unwanted signals to produce cleaned data for parameter extraction from the first pixel and/or second pixel.

公开(公告)号：US11908400B2

公开(公告)日：2024-02-20

申请号：US17989216

申请日：2022-11-17

Applicant: Ignis Innovation Inc.

Inventor： Gholamreza Chaji

IPC: G09G3/3208 ,  G09G3/00 ,  G06F9/50

CPC classification number: G09G3/3208 ,  G06F9/5016 ,  G06F9/5022 ,  G06F9/5027 ,  G06F9/5094 ,  G09G3/006 ,  G09G2320/043 ,  G09G2320/0693 ,  G09G2330/021 ,  G09G2330/027

Abstract: A system including a display module and a system module. The display module is integrated in a portable device with a display communicatively coupled to one or more of a driver unit, a measurement unit, a timing controller, a compensation sub-module, and a display memory unit. The system module is communicatively coupled to the display module and has one or more interface modules, one or more processing units, and one or more system memory units. At least one of the processing units and the system memory units is programmable to calculate new compensation parameters for the display module during an offline operation.

公开(公告)号：US20230377494A1

公开(公告)日：2023-11-23

申请号：US18228794

申请日：2023-08-01

Applicant: Ignis Innovation Inc.

Inventor： Arash MORADI ,  Jafar TALEBZADEH ,  Junhu HE ,  Shuenn-Jiun TANG

IPC: G09G3/00 ,  G09G3/3225 ,  G09G3/3233

CPC classification number: G09G3/006 ,  G09G3/3225 ,  G09G3/3233 ,  G09G2330/12 ,  G09G2310/0262 ,  G09G2310/0251 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/0693 ,  G09G2300/0861

Abstract: Active Matrix Organic Light Emitting Diode (AMOLED) displays, novel pixel circuits therefor, and methods of programming the pixel circuit and measuring the current of the pixel circuit and OLED thereof are disclosed. One pixel circuit includes four TFT transistors, a storage capacitor and an OLED device and is programmed with use of voltage supplied through a data line. One method measures currents of the OLED and the pixel circuit through the data line by a readout circuit.

公开(公告)号：US11792387B2

公开(公告)日：2023-10-17

申请号：US17894501

申请日：2022-08-24

Applicant: Ignis Innovation Inc.

Inventor： Vyacheslav Shyshkin ,  Adam Saechao

IPC: G09G3/00 ,  G09G3/3225 ,  H04N17/04 ,  G01J1/02 ,  G01J1/32

CPC classification number: H04N17/04 ,  G01J1/0228 ,  G01J1/32 ,  G09G3/006 ,  G09G3/3225 ,  G09G2320/0233 ,  G09G2320/0693

Abstract: What is disclosed are systems and methods of optical correction for pixel evaluation and correction for active matrix light emitting diode device (AMOLED) and other emissive displays. Optical correction for correcting for non-homogeneity of a display panel uses sparse display test patterns in conjunction with a defocused camera as the measurement device to avoid aliasing (moiré) of the pixels of the display in the captured images.

公开(公告)号：US20230162681A1

公开(公告)日：2023-05-25

申请号：US18058757

申请日：2022-11-24

Applicant: Ignis Innovation Inc.

Inventor： Masih BAHRANI ,  Raymond LEERENTVELD

IPC: G09G3/3233 ,  G09G3/20

CPC classification number: G09G3/3233 ,  G09G3/2096 ,  G09G2300/0842 ,  G09G2300/0819 ,  G09G2310/08 ,  G09G2300/0861

Abstract: Active Matrix Organic Light-Emitting Diode (AMOLED) displays, novel pixel circuits therefore, and methods of programming and driving the pixel circuit are disclosed. A pixel circuit includes five TFT transistors, a light-emitting device and a storage capacitor coupled to an external voltage supplied through a voltage line and is driven using a plurality of operation states effecting in-pixel compensation.

公开(公告)号：US20230136688A1

公开(公告)日：2023-05-04

申请号：US18050562

申请日：2022-10-28

Applicant: IGNIS INNOVATION INC.

Inventor： Raymond Leerentveld

IPC: G09G3/00 ,  G09G3/3208

Abstract: Systems and methods for compensating for degradation of pixels that include OLEDs, including generating and maintaining a stress history model for generating a drive level correction function including drive gain and drive offset which are functions of stress and which compensate the display.

公开(公告)号：US11631371B2

公开(公告)日：2023-04-18

申请号：US17354233

申请日：2021-06-22

Applicant: Ignis Innovation Inc.

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

IPC: G09G5/10 ,  G09G3/3233 ,  G09G3/3291 ,  G09G3/3258 ,  G09G3/325

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：US20220319427A1

公开(公告)日：2022-10-06

申请号：US17844167

申请日：2022-06-20

Applicant: Ignis Innovation Inc.

Inventor： Raymond Leerentveld ,  Daniel Hills ,  Samer Musa

IPC: G09G3/3233 ,  F24F11/74 ,  F24F8/10 ,  A61G13/10 ,  F24F11/00

Abstract: What is disclosed are methods of non-uniformity compensation for active matrix light emitting diode device (AMOLED) and other emissive displays. For each pixel, greyscale level offsets for a number of predetermined greyscale drive levels which produce a uniform flat field are determined and used to generate a correction function for the pixel.

公开(公告)号：US20220223094A1

公开(公告)日：2022-07-14

申请号：US17582446

申请日：2022-01-24

Applicant: Ignis Innovation Inc.

Inventor： Arokia Nathan ,  Gholamreza Chaji ,  Stefan Alexander ,  Peyman Servati ,  Richard I-Heng Huang ,  Corbin Church

IPC: G09G3/20 ,  G09G3/3225 ,  G09G3/3233 ,  G09G3/3241 ,  G09G3/3283 ,  G09G3/3291

Abstract: A method and system for programming, calibrating and driving a light emitting device display, and for operating a display at a constant luminance even as some of the pixels in the display are degraded over time. The system may include extracting a time dependent parameter of a pixel for calibration. Each pixel in the display is configured to emit light when a voltage is supplied to the pixel's driving circuit, which causes a current to flow through a light emitting element. Degraded pixels are compensated by supplying their respective driving circuits with greater voltages. The display data is scaled by a compression factor less than one to reserve some voltage levels for compensating degraded pixels. As pixels become more degraded, and require additional compensation, the compression factor is decreased to reserve additional voltage levels for use in compensation.

公开(公告)号：US20220157237A1

公开(公告)日：2022-05-19

申请号：US17592554

申请日：2022-02-04

Applicant: Ignis Innovation Inc.

Inventor： Shuenn-Jiun Tang ,  Junhu He ,  Tong Liu ,  Gabriel Franklin Yano de Sousa

IPC: G09G3/3225

Abstract: What is disclosed are systems and methods for compensating for display OLED degradation. Correction factors k for OLED degradation of each sub-pixel is modelled and tracked based on grey level, temperature, and time, and used to correct image data provided to an OLED display.