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：US20200286431A1

公开(公告)日：2020-09-10

申请号：US16810497

申请日：2020-03-05

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：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.