公开(公告)号：US11875720B2

公开(公告)日：2024-01-16

申请号：US18093031

申请日：2023-01-04

Applicant: Samsung Display Co., LTD.

Inventor： Gwang Teak Lee ,  Tae Gon Im

IPC: G09G3/32 ,  G09G3/20 ,  H01L25/16 ,  G09G3/3233 ,  H01L33/32

CPC classification number: G09G3/2007 ,  G09G3/32 ,  G09G3/3233 ,  H01L25/167 ,  G09G2300/0426 ,  G09G2300/0814 ,  G09G2300/0842 ,  G09G2320/0626 ,  H01L33/325

Abstract: A display device includes a display panel and the display panel includes a pixel. The pixel includes a light emitting unit including at least one light emitting element, a driving transistor providing a driving current corresponding to a data signal to the light emitting unit, and a first transistor electrically connected between both ends of the light emitting unit. A driver provides the data signal to the pixel and provides a duty control signal to the first transistor. The driver varies a voltage level of the data signal in a first grayscale section in which a grayscale corresponding to the data signal is greater than or equal to a reference grayscale, and varies a duty ratio of the duty control signal in a second grayscale section in which the grayscale is less than the reference grayscale.

公开(公告)号：US11367384B2

公开(公告)日：2022-06-21

申请号：US17149429

申请日：2021-01-14

Applicant: Samsung Display Co., Ltd.

Inventor： Gwang Teak Lee ,  Seong Sik Choi

IPC: G09G3/32 ,  H01L25/16 ,  H01L33/20

Abstract: A display device and a driving method thereof are disclosed. The display device includes a subpixel including a light emitting unit including a first electrode, a second electrode, and a plurality of light emitting elements connected between the first electrode and the second electrode, and a driving transistor configured to supply a driving current to the light emitting unit; a detector electrically connected to the light emitting unit to detect a short circuit in the plurality of light emitting elements; and a blocking controller configured to control blocking of the driving current based on an output of the detector. Accordingly, power consumption of the display device may be improved.

公开(公告)号：US20210319744A1

公开(公告)日：2021-10-14

申请号：US17149429

申请日：2021-01-14

Applicant: Samsung Display Co., Ltd.

Inventor： Gwang Teak Lee ,  Seong Sik Choi

IPC: G09G3/32

Abstract: A display device and a driving method thereof are disclosed. The display device includes a subpixel including a light emitting unit including a first electrode, a second electrode, and a plurality of light emitting elements connected between the first electrode and the second electrode, and a driving transistor configured to supply a driving current to the light emitting unit; a detector electrically connected to the light emitting unit to detect a short circuit in the plurality of light emitting elements; and a blocking controller configured to control blocking of the driving current based on an output of the detector. Accordingly, power consumption of the display device may be improved.

公开(公告)号：US11848407B2

公开(公告)日：2023-12-19

申请号：US17019725

申请日：2020-09-14

Applicant: Samsung Display Co., Ltd.

Inventor： Gwang Teak Lee ,  Seong Sik Choi

IPC: H01L29/205 ,  H01L33/00 ,  H01L33/62 ,  H01L25/075 ,  H01L25/16

CPC classification number: H01L33/62 ,  H01L25/0753 ,  H01L25/167

Abstract: A display device includes a plurality of pixels on a substrate. Each of the pixels includes a first electrode and a second electrode spaced apart from each other on the substrate, and a plurality of light emitting elements, each including a first end portion connected to the first electrode and a second end portion connected to the second electrode. The first electrode includes a plurality of first holes adjacent to the first end portion of each of the light emitting elements.

公开(公告)号：US20220406870A1

公开(公告)日：2022-12-22

申请号：US17579479

申请日：2022-01-19

Applicant: Samsung Display Co., LTD.

Inventor： Gwang Teak Lee

IPC: H01L27/32

Abstract: A display device includes a pixel including a primary inductor and a secondary inductor that are inductively coupled to each other, a pixel circuit electrically connected to the primary inductor, and configured to control a current flowing through the primary inductor by using at least one transistor, and a light emitting unit electrically connected to the secondary inductor, and including at least one light emitting element.