公开(公告)号：US12020649B2

公开(公告)日：2024-06-25

申请号：US17758677

申请日：2020-08-24

申请人： GOOGLE LLC

发明人： Sangmoo Choi ,  Janghoon Song

IPC分类号： G09G3/3266 ,  G09G3/3225

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

摘要： 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：US11842674B2

公开(公告)日：2023-12-12

申请号：US17626844

申请日：2019-11-08

申请人： GOOGLE LLC

发明人： Sun-il Chang ,  Sangmoo Choi

IPC分类号： G09G3/32

CPC分类号： G09G3/32 ,  G09G2300/0408 ,  G09G2300/0426 ,  G09G2310/0286

摘要： 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：US11810510B2

公开(公告)日：2023-11-07

申请号：US17920453

申请日：2021-12-02

申请人： Google LLC

发明人： Sangmoo Choi

IPC分类号： G09G3/3258 ,  G09G3/3233

CPC分类号： G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0232 ,  G09G2310/08 ,  G09G2320/0686

摘要： An electronic device includes a display device that includes a plurality of pixels that form an active area of the display device, the active area of the display device defining a rounded edge portion, wherein multiple pixels that form at least part of the rounded edge portion have stepped relative brightness levels determined by hardware structures of the multiple pixels, such that a first pixel of the multiple pixels that is located at a first position in the rounded edge portion has a first relative brightness level defined by a first pixel hardware structure and a second pixel of the multiple pixels that is located at a second position has a second relative brightness level defined by a second pixel hardware structure, the first relative brightness level being different from the second relative brightness level, the first pixel hardware structure being different from the second pixel hardware structure.

公开(公告)号：US20230010162A1

公开(公告)日：2023-01-12

申请号：US17932555

申请日：2022-09-15

申请人： Google LLC

发明人： Sangmoo Choi ,  Mark Mienko

IPC分类号： G09G5/10 ,  G09G3/3208

摘要： This document describes systems and directed at rejecting display leakage light in under-display sensors. In aspects, an ambient light sensor of an electronic device rejects leakage light originating from pixels in a display using a look-up table and an ambient light calculating formula. In implementations, the look-up table is developed based on a variety of operating conditions that the electronic device may experience, including variable refresh rates and display luminosities. The look-up table includes pre-calculated values of a leakage light ratio, for given operating conditions, that can be used to reject leakage light originating from displays by computing the ambient light calculating formula.

公开(公告)号：US20220415263A1

公开(公告)日：2022-12-29

申请号：US16967192

申请日：2019-09-09

申请人： Google LLC

发明人： Sangmoo Choi ,  Wonjae Choi

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

摘要： 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：US20220327999A1

公开(公告)日：2022-10-13

申请号：US17635774

申请日：2019-11-08

申请人： Google LLC

发明人： Sangmoo Choi ,  Janghoon Song ,  Wonjae Choi

IPC分类号： G09G3/3233

摘要： 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.

公开(公告)号：US20220307902A1

公开(公告)日：2022-09-29

申请号：US17753077

申请日：2020-12-16

申请人： Google LLC

发明人： Ozan Cakmakci ,  Jyothi Karri ,  Sangmoo Choi ,  Ion Bita

IPC分类号： G01J3/28 ,  G01J3/18 ,  G01J3/02 ,  H04M1/02 ,  H01L27/32

摘要： A mobile computing device includes an emissive display panel, where the panel is used as a grating, and spectrometer optics positioned behind/below the emissive display panel. A mobile computing device includes an emissive display panel and a spectrometer positioned below the emissive display panel. The emissive display panel includes a first periodic pattern of pixels that include one or more LEDs and a second periodic pattern of circuit elements that control the pixels, where the first and second periodic patterns are configured to diffract light received from outside the device, which passes through the emissive display, and where the diffraction is wavelength-dependent. The spectrometer is configured to detect intensities of different wavelength ranges of the diffracted light.

公开(公告)号：US20220148536A1

公开(公告)日：2022-05-12

申请号：US17586386

申请日：2022-01-27

申请人： Google LLC

发明人： Sangmoo Choi

IPC分类号： G09G5/10 ,  G06V40/13

摘要： This document describes systems and techniques directed at minimizing display flickering during biometric authentication. In aspects, an electronic device having a display panel and a biometric authentication system, such as an under-display fingerprint sensor (UDFPS), includes a display manager configured to implement a localized high-luminance region on the display panel during biometric authentication. The display manager may be further configured to implement a standby state at one or more intervals during the biometric authentication, so as to reduce a number of signal modulations which may otherwise be perceived as a display flickering. In so doing, the display manager selectively entering a standby state during a biometric authentication can minimize display flickering, affording a better user experience.

公开(公告)号：US10984731B2

公开(公告)日：2021-04-20

申请号：US16559491

申请日：2019-09-03

申请人： Google LLC

发明人： Sangmoo Choi ,  Sun-il Chang ,  Sang Young Youn

IPC分类号： G09G3/32 ,  G09G3/3291 ,  G09G3/20

摘要： An apparatus is described that includes a display panel and a sensor. The display panel includes an array of pixels configured to direct light through a front side of the display panel. Each pixel includes sub-pixels, each of which includes an organic light emitting diode (OLED) and an integrated circuit (IC) for controlling an electrical current to the OLED. The sensor is arranged at a back side of the display panel. The sensor includes an emitter configured to emit electromagnetic radiation transmitted through a first area of the display panel. The IC of sub-pixels of the array of pixels outside the first area includes a first IC arrangement. The IC of sub-pixels of the array of pixels within the first area includes a transistor in addition to the first IC arrangement. The transistor is configured to operate as a control switch controlling emission of light from the sub-pixel.

公开(公告)号：US20210074207A1

公开(公告)日：2021-03-11

申请号：US16563739

申请日：2019-09-06

申请人： Google LLC

发明人： Sangmoo Choi ,  Sun-il Chang ,  Ion Bita

IPC分类号： G09G3/3225 ,  H04M1/02

摘要： An apparatus is described that includes an organic light emitting diode (OLED) display and a sensor. The OLED display includes a first area having a first pixel density, a second area having a second pixel density, and a third area having a third pixel density. The second area is arranged between the first area and the third area. The first pixel density is lower than the second pixel density. The second pixel density is lower than the third pixel density. The sensor is arranged to receive electromagnetic radiation transmitted through the first area of the OLED display.