公开(公告)号：US11783752B2

公开(公告)日：2023-10-10

申请号：US17615992

申请日：2019-12-17

Applicant: Google LLC

Inventor： Hyunchul Kim ,  Sun-il Chang ,  Wonjae Choi ,  Sang Young Youn

IPC: G09G3/20 ,  G09G5/00

CPC classification number: G09G3/2074 ,  G09G5/005 ,  G09G2320/0276 ,  G09G2320/0285 ,  G09G2320/0673

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for gamma lookup table compression. In one aspect, a method includes obtaining a gamma value for a pixel of an image to be shown on a display, determining a base gamma value based on a base lookup table that corresponds to a base display condition, determining a delta gamma value based on a delta lookup table that corresponds to a current display condition for the pixel, determining a remapped gamma value for the pixel based on a combination of the base gamma value and the delta gamma value, and providing the remapped gamma value to be shown on the display.

公开(公告)号：US20220406854A1

公开(公告)日：2022-12-22

申请号：US17756382

申请日：2020-02-07

Applicant: Google LLC

Inventor： Sangmoo Choi ,  Sun-il Chang

IPC: H01L27/32 ,  G09G3/3266

Abstract: A display device includes a plurality of subpixel emissive areas of a first color, a second color, and a third color arranged in an array having a plurality of rows and columns. Rows of the array include subpixel emissive areas arranged in a repeating pattern of a first color subpixel emissive area, a second color subpixel emissive area, a third color subpixel emissive area, and a second color subpixel emissive area. Alternating columns of the array include subpixel emissive areas: (a) arranged in a repeating pattern of a subpixel emissive area of the first color and a subpixel emissive areas of the third color, and (b) including only subpixel emissive areas of the second color. The display device further includes a plurality of scan lines, a plurality of column lines, and a plurality of electronic subpixel circuits arranged in the array. Each electronic subpixel circuit is configured for receiving electronical signals from a scan line and from a column line and for converting the received signals into a current signal provided to one of the subpixel emissive areas to drive light emission from the subpixel emissive area, where electronic subpixel circuits arranged in a column of the array drive columns of emissive areas having only one color.

公开(公告)号：US20220366829A1

公开(公告)日：2022-11-17

申请号：US17774386

申请日：2019-12-05

Applicant: Google LLC

Inventor： Hyunchul Kim ,  Wonjae Choi ,  Sun-il Chang

IPC: G09G3/20

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for dual color management for a multi-pixel density display. In one aspect, the method includes obtaining an image to be shown on a display, where the display includes both a first area that has a first pixel density and a second area that has a second pixel density that is less than the first pixel density, determining that a pixel with an initial value in the image will be displayed in the first area of the display (120), in response to determining that a pixel with the initial value in the image will be displayed in the first area of the display, determining a remapped value for the pixel in the image based on the initial value and a lookup table for the first area (130), and providing the remapped value for output on the display (150).

公开(公告)号：US20220189415A1

公开(公告)日：2022-06-16

申请号：US17291987

申请日：2020-09-03

Applicant: Google LLC

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

IPC: G09G3/3291 ,  G09G3/20

Abstract: 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：US11037494B1

公开(公告)日：2021-06-15

申请号：US16824239

申请日：2020-03-19

Applicant: Google LLC

Inventor： Sun-il Chang ,  Sang Young Youn

IPC: G09G3/3233

Abstract: An example device includes a plurality of power converters configured to supply electrical power to a display, each optimized for a different output load current range; and a controller configured to: estimate a current level of the display; select, based on the estimated current level, a power converter of the plurality of power converters; and cause electrical power from the selected power converter to be supplied to the display.

公开(公告)号：US20210065635A1

公开(公告)日：2021-03-04

申请号：US16559491

申请日：2019-09-03

Applicant: Google LLC

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

IPC: G09G3/3291 ,  G09G3/20

Abstract: 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：US20210035485A1

公开(公告)日：2021-02-04

申请号：US16945331

申请日：2020-07-31

Applicant: Google LLC

Inventor： David Morris Hoffman ,  Sangmoo Choi ,  Sun-il Chang ,  Ion Bita

IPC: G09G3/20 ,  G09G3/3208

Abstract: A display panel includes a first set of pixels that each include a respective red sub-pixel and a respective green sub-pixel and a second set of pixels that each include a respective blue sub-pixel and a respective green sub-pixel, where the first set of pixels and the second set of pixels are arranged on the display panel such that at least one side of each of the pixels in the first set of pixels is adjacent to at least one of the pixels in the second set of pixels, at least one side of each of the pixels in the first set of pixels is not adjacent to any pixel, and the green sub-pixels are arranged on the display panel such that the green sub-pixels are evenly distributed in the display panel.