公开(公告)号：US20230029925A1

公开(公告)日：2023-02-02

申请号：US17758677

申请日：2020-08-24

Applicant: GOOGLE LLC

Inventor： Sangmoo Choi ,  Janghoon Song

IPC: G09G3/3266 ,  G09G3/3225

Abstract: A display can include a plurality of pixels arranged in a matrix of rows and columns, and a gate driver circuit including a plurality of row drivers configured as a shift register that sequentially and individually addresses the rows. The display panel can also include a first clock circuit configured to provide a first set of clock signals to a first portion of the row drivers to address a respective first portion of the rows. The first clock circuit can include a signal distribution circuit having a first input impedance. The display panel can also include a second clock circuit configured to provide a second set of clock signals to a second portion of the row drivers to address a respective second portion of the rows. The second clock circuit can include a signal distribution circuit having a second input impedance that is matched with the first input impedance.

公开(公告)号：US11783750B2

公开(公告)日：2023-10-10

申请号：US17260871

申请日：2020-07-29

Applicant: Google LLC

Inventor： Sangmoo Choi ,  Janghoon Song ,  Taesung Kim

IPC: G09G3/20 ,  G09G3/3208

CPC classification number: G09G3/2007 ,  G09G3/3208 ,  G09G2320/0233 ,  G09G2320/0276 ,  G09G2320/0673 ,  G09G2320/0686

Abstract: A method for driving an organic light emitting diode (OLED) display having a first area with a first pixel density and a second area with a second pixel density higher than the first pixel density, the method includes receiving image content that specifies a grayscale value for both a first pixel in the first area and a second pixel in the second area, providing, based on the grayscale value, a first voltage to the first pixel in the first area, and providing, based on the grayscale value, a second voltage that is different from the first voltage to the second pixel in the second area, where the second voltage causes the second pixel to emit light less brightly than the first voltage causes the first pixel to emit light.

公开(公告)号：US20220309983A1

公开(公告)日：2022-09-29

申请号：US17260871

申请日：2020-07-29

Applicant: Google LLC

Inventor： Sangmoo Choi ,  Janghoon Song ,  Taesung Kim

IPC: G09G3/20 ,  G09G3/3208

Abstract: A method for driving an organic light emitting diode (OLED) display having a first area with a first pixel density and a second area with a second pixel density higher than the first pixel density, the method includes receiving image content that specifies a grayscale value for both a first pixel in the first area and a second pixel in the second area, providing, based on the grayscale value, a first voltage to the first pixel in the first area, and providing, based on the grayscale value, a second voltage that is different from the first voltage to the second pixel in the second area, where the second voltage causes the second pixel to emit light less brightly than the first voltage causes the first pixel to emit light.

公开(公告)号：US12020649B2

公开(公告)日：2024-06-25

申请号：US17758677

申请日：2020-08-24

Applicant: GOOGLE LLC

Inventor： Sangmoo Choi ,  Janghoon Song

IPC: G09G3/3266 ,  G09G3/3225

CPC classification number: G09G3/3266 ,  G09G3/3225 ,  G09G2310/0262 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2320/0266 ,  G09G2330/021

Abstract: A display can include a plurality of pixels arranged in a matrix of rows and columns, and a gate driver circuit including a plurality of row drivers configured as a shift register that sequentially and individually addresses the rows. The display panel can also include a first clock circuit configured to provide a first set of clock signals to a first portion of the row drivers to address a respective first portion of the rows. The first clock circuit can include a signal distribution circuit having a first input impedance. The display panel can also include a second clock circuit configured to provide a second set of clock signals to a second portion of the row drivers to address a respective second portion of the rows. The second clock circuit can include a signal distribution circuit having a second input impedance that is matched with the first input impedance.

公开(公告)号：US20220327999A1

公开(公告)日：2022-10-13

申请号：US17635774

申请日：2019-11-08

Applicant: Google LLC

Inventor： Sangmoo Choi ,  Janghoon Song ,  Wonjae Choi

IPC: G09G3/3233

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for driving a display with an array of light-emitting pixels. The pixels are arranged in a plurality of rows. The array includes two or more independently drivable areas. Each area includes two or more adjacent rows. The method includes, during an image frame, while operating in a first mode of operation, activating a first shift register circuit addressing only rows of pixels in a first area of the independently drivable areas. Activating the first register circuit illuminates one or more pixels in the first area. The method also includes, during the image frame, while operating in the first mode of operation, deactivating a second shift register circuit addressing only rows of pixels in a second area of the independently drivable areas. Deactivating the second register circuit maintains every pixel in the second area unilluminated during the image frame.