公开(公告)号：US20200258921A1

公开(公告)日：2020-08-13

申请号：US16760495

申请日：2018-10-29

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kei TAKAHASHI ,  Susumu KAWASHIMA ,  Koji KUSUNOKI ,  Kazunori WATANABE

IPC: H01L27/12 ,  G09G3/36 ,  H03M1/68

Abstract: To provide a display device having a small circuit area and low power consumption. The display device includes a semiconductor device and a D/A converter circuit, and the semiconductor device includes first to third transistors and first and second capacitors. A first terminal of the first transistor is electrically connected to a first terminal of the first capacitor. A first terminal of the second transistor is electrically connected to a gate of the third transistor, a second terminal of the first capacitor, and a first terminal of the second capacitor. A first terminal of the third transistor is electrically connected to a second terminal of the second capacitor. An output terminal of the D/A converter circuit is electrically connected to a second terminal of the first transistor and a second terminal of the second transistor. Supply of a potential to the first terminal of the first capacitor changes(finely adjusts) the potential of the gate of the third transistor to be more precise than a potential that can be output from the D/A converter circuit.

公开(公告)号：US20160349904A1

公开(公告)日：2016-12-01

申请号：US15159020

申请日：2016-05-19

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiroyuki MIYAKE ,  Hideaki SHISHIDO ,  Susumu KAWASHIMA ,  Shunpei YAMAZAKI

IPC: G06F3/041 ,  H01L27/32 ,  G06F3/044 ,  H01L27/12

Abstract: A semiconductor device including a transistor includes a pixel circuit, a monitor circuit, and a correction circuit. The pixel circuit includes a selection transistor, a driving transistor, and a light-emitting element. The monitor circuit includes a monitor light-emitting element and a monitor transistor. The semiconductor device obtains the value of current flowing to the monitor light-emitting element and the monitor transistor and controls the value of current flowing to the light-emitting element and the driving transistor by the correction circuit.

Abstract translation: 包括晶体管的半导体器件包括像素电路，监视电路和校正电路。 像素电路包括选择晶体管，驱动晶体管和发光元件。 监视电路包括监视发光元件和监视晶体管。 半导体器件获得流向监视发光元件和监视晶体管的电流值，并通过校正电路控制流向发光元件和驱动晶体管的电流值。