公开(公告)号：US11710440B2

公开(公告)日：2023-07-25

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 ,  G09G3/3208 ,  G09G3/36

CPC classification number: G09G3/2074 ,  G09G3/3208 ,  G09G3/3607 ,  G09G2300/0452 ,  G09G2320/0666 ,  G09G2320/0673 ,  G09G2340/06 ,  G09G2360/16

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：US20230118354A1

公开(公告)日：2023-04-20

申请号：US17505550

申请日：2021-10-19

Applicant: Synaptics Incorporated

Inventor： Takashi Nose ,  Hirobumi Furihata ,  Masao Orio

IPC: G09G3/20

Abstract: A display driver includes image processing circuitry and drive circuitry. The image processing circuitry is configured to generate first voltage data for a first pixel in a first screen area of a display panel using a first gamma parameter. The image processing circuitry is further configured to generate second voltage data for a second pixel in a second screen area of the display panel using a second gamma parameter set. The image processing circuitry is further configured to determine an interpolated gamma parameter set for a third pixel in a connection area of the display panel through interpolation between the first gamma parameter set and the second gamma parameter set. The connection area is disposed between the first screen area and the second screen area. The image processing circuitry is further configured to generate third voltage data for the third pixel using the interpolated gamma parameter set.

公开(公告)号：US11620933B2

公开(公告)日：2023-04-04

申请号：US17069384

申请日：2020-10-13

Applicant: Synaptics Incorporated

Inventor： Masao Orio ,  Takashi Nose ,  Hirobumi Furihata ,  Akio Sugiyama ,  Tomoo Minaki

IPC: G09G3/20

Abstract: A display driver includes image processing circuitry and driver circuitry. The image processing circuitry is configured to process first image data for pixels of a display panel comprising a first region and a second region to generate output voltage data. The first region and the second region have different pixel layouts. The driver circuitry is configured to update the pixels based on the output voltage data. Processing the first image data comprises IR-drop compensation based on first luminances of the pixels, each of the first luminances being determined based on the first image data and whether a corresponding pixel of the pixels is located in the first region.

公开(公告)号：US11443671B2

公开(公告)日：2022-09-13

申请号：US17148364

申请日：2021-01-13

Applicant: Synaptics Incorporated

Inventor： Hirobumi Furihata ,  Tomoo Minaki ,  Masao Orio ,  Takashi Nose

IPC: G09G3/20

Abstract: A display driver includes control circuitry and image processing circuitry. The control circuitry is configured to store a default gamma curve and determine a scaling factor based on a location of a target pixel in a display panel. The control circuitry is further configured to determine a modified gamma curve by scaling the default gamma curve with the scaling factor. The image processing circuitry configured to apply a gamma transformation based on the modified gamma curve to image data defined for the target pixel to generate output voltage data for the target pixel.

公开(公告)号：US11436962B2

公开(公告)日：2022-09-06

申请号：US17148388

申请日：2021-01-13

Applicant: Synaptics Incorporated

Inventor： Hirobumi Furihata ,  Masao Orio ,  Takashi Nose ,  Akio Sugiyama

IPC: G09G3/20

Abstract: A display driver includes control circuitry and image processing circuitry. The control circuitry is configured to store first and second predetermined gamma curve defined for first and second regions of a display panel, respectively, the first region having a different pixel layout than the second region. The control circuitry is further configured to determine first and second modified gamma curves by scaling the first and second predetermined gamma curves with a common scale factor. The image processing circuitry is configured to apply a first gamma transformation based on the first modified gamma curve to a first graylevel defined for a first pixel circuit located in the first region to determine a first output voltage level and apply a second gamma transformation based on the second modified gamma curve to a second graylevel defined for a second pixel circuit located in the second region to determine a second output voltage level.

公开(公告)号：US11423819B1

公开(公告)日：2022-08-23

申请号：US17496751

申请日：2021-10-07

Applicant: Synaptics Incorporated

Inventor： Hirobumi Furihata ,  Takashi Nose ,  Masao Orio

IPC: G09G3/20

Abstract: A display driver includes image processing circuitry and drive circuitry. The image processing circuitry is configured to receive first subpixel data for a first scan line of a display panel. The display panel includes a first region with a first pixel layout and a second region with a second pixel layout different from the first pixel layout. The image processing circuitry is further configured to determine an overshoot amount based, at least in part, on the first subpixel data and region indication data and generate resulting voltage data using the overshoot amount. The region indication data indicates whether the resulting voltage data is for the first region or for the second region. The drive circuitry is configured to drive the display panel based, at least in part, on the resulting voltage data.

公开(公告)号：US20220223081A1

公开(公告)日：2022-07-14

申请号：US17148388

申请日：2021-01-13

Applicant: Synaptics Incorporated

Inventor： Hirobumi Furihata ,  Masao Orio ,  Takashi Nose ,  Akio Sugiyama

IPC: G09G3/20

Abstract: A display driver includes control circuitry and image processing circuitry. The control circuitry is configured to store first and second predetermined gamma curve defined for first and second regions of a display panel, respectively, the first region having a different pixel layout than the second region. The control circuitry is further configured to determine first and second modified gamma curves by scaling the first and second predetermined gamma curves with a common scale factor. The image processing circuitry is configured to apply a first gamma transformation based on the first modified gamma curve to a first graylevel defined for a first pixel circuit located in the first region to determine a first output voltage level and apply a second gamma transformation based on the second modified gamma curve to a second graylevel defined for a second pixel circuit located in the second region to determine a second output voltage level.

公开(公告)号：US11270662B2

公开(公告)日：2022-03-08

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：US20210390909A1

公开(公告)日：2021-12-16

申请号：US17459860

申请日：2021-08-27

Applicant: Synaptics Incorporated

Inventor： Akio Sugiyama ,  Takashi Nose ,  Hirobumi Furihata ,  Masao Orio ,  Susumu Saito

IPC: G09G3/3258 ,  G09G3/20

Abstract: A display driver comprises gamma processing circuitry, compensation circuitry, and driver circuitry. The gamma processing circuitry is configured to process the image data to generate gamma processed image data. The compensation circuitry is configured to process the gamma-processed image data, based on a ratio of a number of display elements that emit light to a total number of display elements of a display panel, to generate compensated image data. The driver circuitry is configured to drive the display panel based on the compensated image data.

公开(公告)号：US11164500B2

公开(公告)日：2021-11-02

申请号：US16697654

申请日：2019-11-27

Applicant: SYNAPTICS INCORPORATED

Inventor： Masao Orio ,  Hirobumi Furihata ,  Akio Sugiyama ,  Takashi Nose

IPC: G09G3/20

Abstract: A display driver comprises color gamut adjustment circuitry and drive circuitry. The color gamut adjustment circuitry is configured to generate an in-use parameter set based on a plurality of parameter sets corresponding to different color gamuts and a position of a target pixel and generate an output pixel data by performing color gamut adjustment processing on an input pixel data of the target pixel based on the in-use parameter set. The drive circuitry is configured to drive a display panel based on the output pixel data.