公开(公告)号：US11501710B2

公开(公告)日：2022-11-15

申请号：US17573150

申请日：2022-01-11

Applicant: JOLED INC.

Inventor： Masanori Ohara

IPC: G09G3/3233 ,  G09G3/3266

Abstract: A display device includes: a display portion including a plurality of pixel circuits arranged in a matrix; and a gate driver that outputs one driving pulse for each horizontal cycle. The plurality of pixel circuits each include subpixel circuits each including a light emitting element, a driving transistor that supplies a current to the light emitting element, a write transistor, a reference transistor, and an initialization transistor. The one driving pulse is input per vertical cycle from the gate driver to the initialization transistor included in each of a plurality of rows in the plurality of pixel circuits, and the one driving pulse input to the initialization transistors included in mutually different rows among the plurality of rows is input to each of the write transistor and the reference transistor, the mutually different rows being other than a row in which the write transistor and the reference transistor are included.

公开(公告)号：US11373594B2

公开(公告)日：2022-06-28

申请号：US17232915

申请日：2021-04-16

Applicant: JOLED INC.

Inventor： Masanori Ohara

IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/3283

Abstract: A display apparatus includes pixels two-dimensionally arranged. Each of the pixels includes a light-emitting element, a capacitor which retains a voltage of a data signal, a drive transistor which feeds a current according to the voltage of the data signal to the light-emitting element, a first write transistor connected between a data signal line and a gate electrode of the drive transistor, a second write transistor connected between the first write transistor and a gate electrode of the drive transistor, and a counter transistor including a source electrode and a drain electrode, one of the source electrode and the drain electrode being connected between the first write transistor and the second write transistor. The other of the source electrode and the drain electrode of the counter transistor is connected to a counter voltage line which feeds a counter voltage.

公开(公告)号：US11309377B2

公开(公告)日：2022-04-19

申请号：US16751809

申请日：2020-01-24

Applicant: JOLED INC.

Inventor： Masanori Ohara

IPC: H01L27/32 ,  G09G3/3208 ,  H01L27/118 ,  H01L27/12

Abstract: A pixel circuit disposed in a pixel region including three subpixel regions includes: three light-emitting elements that are disposed in the subpixel regions and have mutually different luminescent colors; one drive circuit that is disposed in a subpixel region serving as a first subpixel region, and supplies drive current to the three light-emitting elements in time division; and a positive power supply line serving as a first power supply line that is disposed in a subpixel region serving as a second subpixel region, and supplies power supply voltage to the drive circuit.

公开(公告)号：US10997915B2

公开(公告)日：2021-05-04

申请号：US16717277

申请日：2019-12-17

Applicant: JOLED INC.

Inventor： Masanori Ohara

IPC: G09G3/3233 ,  G09G3/3283 ,  G09G3/20

Abstract: A pixel circuit includes: one data signal line; one holding capacitor which holds a data signal transmitted through the one data signal line; one drive transistor which outputs a current in accordance with the data signal held at the one holding capacitor; three color selection lines; three color selection transistors having control terminals respectively connected to the three color selection lines that are mutually different; and three light emitting elements being connected to an output end of the current of the one drive transistor via the three color selection transistors, respectively, that are mutually different, and emitting luminescent colors that are mutually different.