公开(公告)号：US11631372B2

公开(公告)日：2023-04-18

申请号：US17495251

申请日：2021-10-06

Applicant: JOLED INC.

Inventor： Tetsuro Yamamoto ,  Kenji Kokuda ,  Hitoshi Tsuge ,  Teppei Tanaka

IPC: G09G3/3233

Abstract: A pixel circuit driving method is a method for driving a pixel circuit that includes a drive transistor that supplies a current corresponding to a signal voltage supplied via a signal line, a write transistor connected between the signal line and a gate electrode of the drive transistor, and an organic EL element that emits light in accordance with the current. The pixel circuit driving method includes supplying a reference potential to the gate electrode of the drive transistor before a threshold correction preparation operation of making a gate-source voltage of the drive transistor higher than a threshold voltage of the drive transistor.

公开(公告)号：US10367051B2

公开(公告)日：2019-07-30

申请号：US16011792

申请日：2018-06-19

Applicant: JOLED INC.

Inventor： Kenji Kokuda

IPC: H01L27/32

Abstract: An active-matrix display device includes: a pixel matrix that includes a plurality of pixel cells arranged in rows and columns; a first global power supply wire that is disposed for each of the columns in the pixel matrix and connected to each of the plurality of pixel cells in the column; and a second global power supply wire that is disposed for each of the columns in the pixel matrix and connected to each of the plurality of pixel cells in the column. Each of the plurality of pixel cells includes a local power supply wire that is connected to the first global power supply wire, and the local power supply wire does not overlap the second global power supply wire in a plan view of the pixel matrix.