公开(公告)号：US11706517B2

公开(公告)日：2023-07-18

申请号：US17197784

申请日：2021-03-10

Applicant: Google LLC

Inventor： Sangmoo Choi ,  Lu Gao ,  Yoshimichi Matsuoka

IPC: G09G3/20 ,  H04N23/57 ,  G09G3/3208 ,  H04N23/75 ,  H10K59/121

CPC classification number: H04N23/57 ,  G09G3/3208 ,  H04N23/75 ,  H10K59/121 ,  G09G3/20

Abstract: A computing device includes a display panel having a first end and a second end, a sensor, and a processing circuitry. The display panel includes a matrix of pixels and defines an aperture surrounded by pixels of the matrix of pixels but that does not include pixels of the matrix of pixels. A length of the aperture parallel to an axis connecting the first end and the second end is greater than a length of the aperture perpendicular to the axis. The sensor is configured to capture light that passes through the aperture. The processing circuitry, disposed proximal to the second end, is configured to output control signals to pixels of the matrix of pixels.

公开(公告)号：US20230222976A1

公开(公告)日：2023-07-13

申请号：US18000904

申请日：2020-08-31

Applicant: Google LLC

Inventor： Sangmoo Choi ,  Yi Zhang

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2320/0233 ,  G09G2330/06 ,  G09G2300/0842 ,  G09G2300/0819 ,  G09G2300/0861

Abstract: An example method includes programming, during non-emission periods of frames of a plurality of frames based on image data of the frames, pixels of the plurality of pixels of a display of a computing device; causing, during emission periods of the frames, pixels of the plurality of pixels to emit light, wherein an amount of light emitted by the pixels during an emission period of a particular frame is based on the programming for the particular frame; and synchronizing operation of one or more sensors and operation of the plurality of pixels by at least causing the one or more sensors to alternatingly emit, through the display, electromagnetic radiation during emission periods and non-emission periods.

公开(公告)号：US11688352B2

公开(公告)日：2023-06-27

申请号：US16967192

申请日：2019-09-09

Applicant: Google LLC

Inventor： Sangmoo Choi ,  Wonjae Choi

IPC: G09G3/3291 ,  G09G3/3233 ,  G09G3/3266

CPC classification number: G09G3/3291 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2310/027 ,  G09G2320/0209 ,  G09G2360/16

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for displaying an image on a flat panel display with an array of pixels. A method includes receiving image data including a grayscale value for each pixel; determining a grayscale delta for each pixel where the grayscale delta is a variation between the grayscale value for a given pixel addressable by a first scan line and the grayscale value for another pixel addressable by a scan line addressed prior to the first scan line; determining an aggregated grayscale delta for the first scan line; comparing a magnitude of the aggregated grayscale delta to a threshold value corresponding to a data signal that results in line crosstalk; modifying the image data when the magnitude of the aggregated grayscale delta equals or exceeds the threshold value, and displaying the image on the flat panel display using the modified image data.

公开(公告)号：US11557253B2

公开(公告)日：2023-01-17

申请号：US17662972

申请日：2022-05-11

Applicant: Google LLC

Inventor： Sangmoo Choi ,  Chang Ju Kang

IPC: G09G3/3258

Abstract: This document describes systems and techniques for image retention mitigation via voltage biasing for organic light-emitting diode (OLED) displays. In aspects, a pixel array is described having pixel circuits including a first transistor configured to receive a biasing signal from one or more drivers and, based on the biasing signal, enable or disable an application of a bias voltage at a terminal of a second transistor. In so doing, the bias voltage reduces a hysteresis effect experienced by the second transistor for each of the multiple pixel circuits of the pixel array, thereby mitigating an image retention.

公开(公告)号：US20220302228A1

公开(公告)日：2022-09-22

申请号：US17753167

申请日：2020-09-12

Applicant: GOOGLE LLC

Inventor： Sangmoo Choi ,  Jyothi Karri ,  Ion Bita

IPC: H01L27/32 ,  H01L51/52

Abstract: A display configuration to facilitate imaging through the display is disclosed. The imaging can be achieved by positioning a camera behind a transmit/receive area (120,122) of a display. The transmit/receive area is configured to reduce the interaction between the light propagating through the display and circuit elements of the display. The configuration of the transmit/receive area can be characterized by reduced pixel density, rearranged circuit elements (1242), and as light blocking layer (1222, 1260) to prevent light from diffracting from gaps formed by circuit elements (1242).

公开(公告)号：US20220262302A1

公开(公告)日：2022-08-18

申请号：US17626844

申请日：2019-11-08

Applicant: GOOGLE LLC

Inventor： Sun-il Chang ,  Sangmoo Choi

IPC: G09G3/32

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for a display with discrete gate-in-panel circuitry. In some implementations, a display includes an array of emissive pixels arranged in rows and columns, where the array includes a first continuous area having a first pixel density and a second continuous area having a second pixel density less than the first pixel density, and consecutive rows of the emissive pixels extending between the first and second continuous areas. The display also includes gate in panel (GIP) circuits in the second continuous area, a data lines connected to the array of emissive pixels, and signal lines connected to the array of emissive pixels.

公开(公告)号：US20220190064A1

公开(公告)日：2022-06-16

申请号：US17119580

申请日：2020-12-11

Applicant: Google LLC

Inventor： David Morris Hoffman ,  Sangmoo Choi

IPC: H01L27/32

Abstract: An apparatus is described that includes a light emitting diode (LED) display and a sensor. The LED display includes pixel emissive areas that are each coupled by a corresponding conductive trace to a corresponding pixel circuit that drives the respective pixel emissive area. The LED display has a high density region, a low density region, and a transition region between the high density region and the low density region. A pattern of the pixel circuits in the transition region matches a pattern of pixel circuits in the low density region, with at least some conductive traces that couple pixel emissive areas to pixel circuits in the transition region being longer than corresponding conductive traces that couple pixel emissive areas to pixel circuits in the low density region. The sensor is arranged to receive electromagnetic radiation transmitted through the low density region of the LED display.

公开(公告)号：US20220181397A1

公开(公告)日：2022-06-09

申请号：US17595198

申请日：2020-05-22

Applicant: GOOGLE LLC

Inventor： Sangmoo Choi ,  Jyothi Karri ,  Ion Bita

IPC: H01L27/32 ,  G06F3/044 ,  H01L51/56

Abstract: A display configuration to facilitate imaging through the display is disclosed. The imaging can be achieved by positioning a camera behind a through-transmissive area of a display. The through-transmissive area is configured to reduce the interaction between the light propagating through the display and circuit elements of the display. The configuration of the through-transmissive area can be characterized by reduced pixel density, rearranged circuit elements, and a light blocking layer to prevent light from diffracting from gaps formed by circuit elements.

公开(公告)号：US10909905B2

公开(公告)日：2021-02-02

申请号：US16372865

申请日：2019-04-02

Applicant: Google LLC

Inventor： Sangmoo Choi ,  Chang Ju Kang

IPC: G09G3/36 ,  G09G3/20

Abstract: A flat panel display that includes a switch bank to couple a signal from a driver integrated circuit to a column data line of a display panel is disclosed. The switch bank can be adjusted based on the frame rate of the display. When the frame rate is high, all sub-switches in the switch bank may be used to reduce an ON resistance of the switch bank. This high frame rate configuration may maintain or increase the speed at which pixels can be controlled but consumes more power. Accordingly, when the frame rate is low, a portion of the sub-switches in the switch bank are unused to reduce the power consumed. This low frame rate configuration may maintain or decrease the speed at which pixels of the display can be controlled but consumes less power.

公开(公告)号：US20250140155A1

公开(公告)日：2025-05-01

申请号：US19010896

申请日：2025-01-06

Applicant: Google LLC

Inventor： Sangmoo Choi ,  Sang Young Youn ,  Chang Ju Kang ,  Sun-il Chang

IPC: G09G3/20 ,  G09G3/3233

Abstract: Rendering images on an active area of an OLED includes rendering images on the active area of the display panel with a plurality of different frame rates. For a plurality of the different frame rates having a frame rate that matches or is above a threshold frame rate, an image refresh operation is performed once per frame period and a self-refresh operation is not performed during the frame period. When rendering images on the active area, for at least one of the different frame rates having a frame rate that is lower than the threshold frame rate, an image refresh operation is performed once per frame period and a self-refresh operation is performed at least once during the frame period.