公开(公告)号：US20200005693A1

公开(公告)日：2020-01-02

申请号：US16451695

申请日：2019-06-25

Applicant: SYNAPTICS INCORPORATED

Inventor： Hirobumi FURIHATA ,  Kazutoshi AOGAKI ,  Tomoo MINAKI

IPC: G09G3/00 ,  G09G3/3225

Abstract: A system and method for generate mura correction data comprises obtaining brightness values of a pixel-existing area and a pixel-absent area of a display panel. Further, updated brightness values are generated by replacing the brightness value of the pixel-absent area with a suitable value. Mura correction data is generated using the updated brightness values. A display driver is configured with the mura correction data for updating a display device.

公开(公告)号：US20210225324A1

公开(公告)日：2021-07-22

申请号：US16748435

申请日：2020-01-21

Applicant: SYNAPTICS INCORPORATED

Inventor： Hirobumi FURIHATA ,  Masao ORIO ,  Tomoo MINAKI ,  Akio SUGIYAMA ,  Kazutoshi AOGAKI

IPC: G09G5/10

Abstract: A display driver comprises signal supply circuitry and control circuitry. The control circuitry is configured to generate a first luminance value using a DBV. The signal supply circuitry is configured to supply to a display panel at least one signal using the first luminance value. The first luminance value has a one-to-one correlation with the display brightness level. The DBV does not have a one-to-one correlation with the display brightness level.

公开(公告)号：US20210012749A1

公开(公告)日：2021-01-14

申请号：US17027229

申请日：2020-09-21

Applicant: SYNAPTICS INCORPORATED

Inventor： Hirobumi FURIHATA ,  Kazutoshi AOGAKI ,  Tomoo MINAKI ,  Akio SUGIYAMA ,  Takashi NOSE

IPC: G09G5/10 ,  G09G3/3208 ,  G09G3/36

Abstract: A display driver includes gamma curve control circuitry and a converter controller. The gamma curve control circuitry is configured to generate a first gamma curve for a first display brightness value (DBV), and a second gamma curve for a second DBV lower than the first DBV. The converter controller is configured to control a digital-analog converter (DAC) configured to perform digital-analog conversion of an input image data. Further, the converter controller is configured to adjust an analog signal voltage amplitude of the DAC based on a range of an output voltage associated with the second gamma curve.

公开(公告)号：US20190156786A1

公开(公告)日：2019-05-23

申请号：US16193985

申请日：2018-11-16

Applicant: SYNAPTICS INCORPORATED

Inventor： Kazutoshi AOGAKI ,  Hirobumi FURIHATA ,  Hirohisa TSUCHIDA ,  Takashi NOSE

IPC: G09G5/10 ,  G09G3/20

Abstract: A device and method for correcting mura within a display device. The device may include a display driver that includes lookup table circuitry, correction amount calculation circuitry, and mura correction circuitry. The lookup table circuitry is configured to calculate a second grayscale value for a second display brightness value (DBV), the second grayscale value being determined to achieve a brightness level corresponding to a first grayscale value and a first DBV. The correction amount calculation circuitry is configured to calculate a mura correction amount based on a mura correction data for the second grayscale value and the second DBV. Further, the mura correction circuitry is configured to perform a mura correction on input image data by using the mura correction amount.

公开(公告)号：US20220383797A1

公开(公告)日：2022-12-01

申请号：US17880603

申请日：2022-08-03

Applicant: Synaptics Incorporated

Inventor： Masao ORIO ,  Hirobumi FURIHATA ,  Kazutoshi AOGAKI ,  Takashi NOSE

IPC: G09G3/20

Abstract: A display driver that drives a display panel comprises storage circuitry, color addition processing circuitry, and drive circuitry. The storage circuitry stores F subpixel data acquired from color coordinate data indicating color coordinates of a displayed color in a predetermined color space displayed on the display panel when an R subpixel, a G subpixel, and a B subpixel in each of a plurality of pixels of the display panel are driven with drive signals corresponding to a minimum grayscale value and an F subpixel in each of the plurality of pixels which displays an additional color other than a primary color R, a primary color G, and a primary color B is driven with a drive signal corresponding to a maximum grayscale value. The color addition processing circuitry generates output FRGB data from input RGB data, in response to the F subpixel data stored in the storage circuitry.

公开(公告)号：US20220005397A1

公开(公告)日：2022-01-06

申请号：US16622788

申请日：2018-03-15

Applicant: SYNAPTICS INCORPORATED

Inventor： Masao ORIO ,  Hirobumi FURIHATA ,  Kazutoshi AOGAKI ,  Takashi NOSE

IPC: G09G3/20

Abstract: A display driver that drives a display panel comprises storage circuitry, color addition processing circuitry, and drive circuitry. The storage circuitry stores F subpixel data acquired from color coordinate data indicating color coordinates of a displayed color in a predetermined color space displayed on the display panel when an R subpixel, a G subpixel, and a B subpixel in each of a plurality of pixels of the display panel are driven with drive signals corresponding to a minimum grayscale value and an F subpixel in each of the plurality of pixels which displays an additional color other than a primary color R, a primary color G, and a primary color B is driven with a drive signal corresponding to a maximum grayscale value. The color addition processing circuitry generates output FRGB data from input RGB data, in response to the F subpixel data stored in the storage circuitry.