公开(公告)号：US12230203B2

公开(公告)日：2025-02-18

申请号：US18234041

申请日：2023-08-15

Applicant: Japan Display Inc.

Inventor： Tomoyuki Ishihara

IPC: G09G3/3233 ,  G09G3/20

Abstract: A display apparatus includes a light-emitting element, a first pixel circuit and a second pixel circuit coupled to the light-emitting element, a first drive transistor included in the first pixel circuit and configured to supply a first drive current to the light-emitting element, a second drive transistor included in the second pixel circuit and configured to supply a second drive current to the light-emitting element, and a drive circuit configured to supply a first video signal to the first drive transistor and to supply a second video signal to the second drive transistor. The first drive transistor is supplied with the first video signal and the second drive transistor is supplied with the second video signal in a same writing period.

公开(公告)号：US12038140B2

公开(公告)日：2024-07-16

申请号：US18230522

申请日：2023-08-04

Applicant: Japan Display Inc.

Inventor： Tomoyuki Ishihara

IPC: F21K9/237 ,  F21K9/232 ,  F21V19/00 ,  H05K3/30 ,  H05K3/34 ,  F21Y107/40 ,  F21Y115/10

CPC classification number: F21K9/232 ,  F21K9/237 ,  F21V19/005 ,  H05K3/303 ,  H05K3/3415 ,  F21Y2107/40 ,  F21Y2115/10

Abstract: To provide a technology capable of improving efficiency in a mounting process of disposing a large number of identical parts such as LED elements on a circuit board. An optical light emitting device includes: packages of a plurality of regular polyhedra each having a light emitting element; and a board having a plurality of mounting holes fitted with three surfaces of the regular polyhedral packages. In the optical light emitting device, the exterior of each of the regular polyhedra in the regular polyhedral packages is comprised of a transparent member. Each of the regular polyhedral packages includes: first electrodes each provided at each top; and second electrodes each provided on a straight line connecting the two tops, each of the first electrodes is connected to one electrode of the light emitting element, and each of the second electrodes is connected to the other electrode of the light emitting element.

公开(公告)号：US11862119B2

公开(公告)日：2024-01-02

申请号：US17495035

申请日：2021-10-06

Applicant: Japan Display Inc.

Inventor： Tomoyuki Ishihara

IPC: G09G3/36

CPC classification number: G09G3/3607 ,  G09G2320/0666

Abstract: According to an aspect, a display device includes a display panel configured to display an image; and a light source configured to emit light to the display panel. The light source includes a first light source configured to emit light in a first primary color, a second light source configured to emit light in a second primary color, and a third light source configured to emit light in a third primary color. A frame period that is a display period of one frame image includes a predetermined number of subframe periods, the predetermined number is four or greater, and color reproduction of the one frame image is performed by a combination of colors that are output in the predetermined number of subframe periods. An output order of colors of the subframe periods is an order of colors in a clockwise direction or in a counterclockwise direction in a hue circle.

公开(公告)号：US11545101B2

公开(公告)日：2023-01-03

申请号：US17828644

申请日：2022-05-31

Applicant: Japan Display Inc.

Inventor： Kazunari Tomizawa ,  Kazuhiko Sako ,  Junji Kobashi ,  Tomoyuki Ishihara

IPC: G09G3/36 ,  G09G3/34

Abstract: According to an aspect, a display device includes: a first liquid crystal panel; a second liquid crystal panel; a light source configured to emit light; and a controller configured to control the first liquid crystal panel and the second liquid crystal panel based on an image signal corresponding to a resolution of the second liquid crystal panel. The first liquid crystal panel includes dimming pixels, and the second liquid crystal panel includes pixels. More than one of the pixels is arranged within a region of each of the dimming pixels. The controller performs blurring processing and determination of dimming gradation values as processing related to operation of the second liquid crystal panel. Each of the dimming gradation values corresponds to a highest gradation value set after the blurring processing among gradation values set for the more than one pixel arranged within the region of each of the dimming pixels.