公开(公告)号：US11164526B2

公开(公告)日：2021-11-02

申请号：US16811514

申请日：2020-03-06

Applicant: Samsung Display Co., LTD.

Inventor： Keun Woo Kim ,  Mee Jae Kang ,  Han Bit Kim ,  Thanh Tien Nguyen ,  Yong Su Lee ,  Jae Seob Lee

IPC: G09G3/3266 ,  G09G3/3291

Abstract: A display device including pixels is provided. Each of the pixels includes a first transistor having a gate electrode connected to a first node, a first electrode connected to a second node, and a second electrode connected to a third node, a second transistor having a gate electrode connected to a first scan line, a first electrode connected to a data line, and a second electrode connected to the second node, and a third transistor having a first gate electrode connected to the first scan line, a second gate electrode, a first electrode connected to the first node, and a second electrode connected to the third node. The second gate electrode may be in a floating state, and the third transistor may be aged to alleviate a leakage current in order to improve image generation.

公开(公告)号：US11616108B2

公开(公告)日：2023-03-28

申请号：US16661329

申请日：2019-10-23

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Joon Woo Bae ,  Mee Jae Kang ,  Thanh Tien Nguyen ,  Kyoung Won Lee ,  Yong Su Lee ,  Jae Seob Lee ,  Gyoo Chul Jo ,  Myoung Geun Cha

IPC: H01L27/32

Abstract: An organic light emitting diode display includes a substrate, an overlap layer on the substrate, a semiconductor layer on the overlap layer, a first gate conductor on the semiconductor layer, a second gate conductor on the first gate conductor, a data conductor on the second gate conductor, a driving transistor on the overlap layer, and an organic light emitting diode connected with the driving transistor. The driving transistor includes, in the semiconductor layer, a first electrode, a second electrode, with a channel therebetween. A gate electrode of the first gate conductor overlaps the channel. The overlap layer overlaps the channel of the driving transistor and at least a portion of the first electrode. A storage line of the second gate conductor receives a driving voltage through a driving voltage line in the data conductor. The overlap layer receives a constant voltage.

公开(公告)号：US12217694B2

公开(公告)日：2025-02-04

申请号：US16849882

申请日：2020-04-15

Applicant: Samsung Display Co., Ltd.

Inventor： Keun Woo Kim ,  Mee Jae Kang ,  Doo Na Kim ,  Yun Jung Oh ,  Yong Su Lee ,  Jae Hwan Chu

IPC: G09G3/3266 ,  G09G3/20 ,  H01L27/12

Abstract: A display device includes: a plurality of pixels connected to gate lines and data lines; a gate driver to supply a gate signal to the gate lines; and a data driver to supply a data signal to the data lines. The gate driver includes: a first transistor including a first active layer at a first layer; and a second transistor including a second active layer at a second layer on the first layer.

公开(公告)号：US11158261B2

公开(公告)日：2021-10-26

申请号：US16852848

申请日：2020-04-20

Applicant: Samsung Display Co., Ltd.

Inventor： Keun Woo Kim ,  Mee Jae Kang ,  Hye Na Kwak ,  Han Bit Kim ,  Thanh Tien Nguyen ,  Yong Su Lee ,  Jae Seob Lee

IPC: G09G3/325 ,  G09G3/3283 ,  G09G3/3266

Abstract: A display device includes: a pixel including: a light emitting element connected between a first power source and a second power source; a first transistor connected between the first power source and the light emitting element to control a driving current, and including a first gate electrode connected to a first node and a second gate electrode connected to a bias control line; and a switching transistor connected between a data line and the first node, and including a gate electrode connected to a scan line; and a driving circuit to drive the pixel according to a driving frequency. The driving circuit drives the pixel in a first mode when the driving frequency is in a first range, and sequentially supplies a control signal having a first voltage and a second voltage to the bias control line during a light emission period of the pixel in the first mode.

公开(公告)号：US11881487B2

公开(公告)日：2024-01-23

申请号：US17386854

申请日：2021-07-28

Applicant: Samsung Display Co., LTD.

Inventor： Han Bit Kim ,  Mee Jae Kang ,  Keun Woo Kim ,  Doo-Na Kim ,  Sang Sub Kim ,  Do Kyeong Lee ,  Jae Hwan Chu

IPC: H01L27/12 ,  H01L27/15 ,  H10K59/121

CPC classification number: H01L27/1222 ,  H01L27/124 ,  H01L27/156 ,  H10K59/1213

Abstract: A display device includes a substrate, a semiconductor layer disposed on the substrate, and including a first channel portion, a second channel portion, a connecting portion disposed between the first channel portion and the second channel portion, and electrode regions, a first insulating layer disposed on the semiconductor layer, a gate conductor disposed on the first insulating layer and including a first gate electrode overlapping the first channel portion and a second gate electrode overlapping the second channel portion, signal lines disposed on the substrate, a first electrode electrically connected to at least one of electrode regions of the semiconductor layer, an emission layer disposed on the first electrode, and a second electrode disposed on the emission layer, and the first channel portion and the second channel portion of the semiconductor layer each have a first width greater than a second width of the connecting portion.

公开(公告)号：US20170358449A1

公开(公告)日：2017-12-14

申请号：US15466330

申请日：2017-03-22

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Byung Soo So ,  Mee Jae Kang ,  Ho Seok Lee ,  Jae Gyun Lim ,  Sang Ho Jeon ,  Yeon Hee Jeon

IPC: H01L21/02 ,  H01L21/67 ,  H01S3/03 ,  H01S3/0971 ,  H01S3/225 ,  H01S3/00 ,  H01L27/12 ,  H01S3/038

CPC classification number: H01L21/02675 ,  H01L21/67115 ,  H01L27/1274 ,  H01S3/005 ,  H01S3/03 ,  H01S3/0346 ,  H01S3/038 ,  H01S3/0407 ,  H01S3/041 ,  H01S3/0971 ,  H01S3/225

Abstract: A laser crystallization method includes exciting gas medium in an airtight container to generate laser beams; amplifying the laser beams by reflecting the laser beams between a high reflection mirror and a low reflection mirror respectively disposed facing opposite end portions of the airtight container, wherein a first transparent window and a second transparent window are fixed to respective end portions of the airtight container, and outputting the amplified laser beams; and disposing a cleaning mirror in a path of the laser beams that have propagated through the second transparent window.

公开(公告)号：US11087980B2

公开(公告)日：2021-08-10

申请号：US15466330

申请日：2017-03-22

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Byung Soo So ,  Mee Jae Kang ,  Ho Seok Lee ,  Jae Gyun Lim ,  Sang Ho Jeon ,  Yeon Hee Jeon

IPC: H01L21/02 ,  H01S3/034 ,  H01L21/67 ,  H01L27/12 ,  H01S3/00 ,  H01S3/03 ,  H01S3/038 ,  H01S3/0971 ,  H01S3/225 ,  H01S3/04 ,  H01S3/041

Abstract: A laser crystallization method includes exciting gas medium in an airtight container to generate laser beams; amplifying the laser beams by reflecting the laser beams between a high reflection mirror and a low reflection mirror respectively disposed facing opposite end portions of the airtight container, wherein a first transparent window and a second transparent window are fixed to respective end portions of the airtight container, and outputting the amplified laser beams; and disposing a cleaning mirror in a path of the laser beams that have propagated through the second transparent window.

公开(公告)号：US11011597B2

公开(公告)日：2021-05-18

申请号：US16842239

申请日：2020-04-07

Applicant: Samsung Display Co., Ltd.

Inventor： Sang Sub Kim ,  Mee Jae Kang ,  Han Bit Kim ,  Yong Su Lee

IPC: H01L27/32 ,  H01L29/786 ,  G09G3/3266 ,  H01L29/66 ,  G09G3/3275

Abstract: A display device includes scan lines for scan signals, data lines for data voltages, and pixels connected to the scan and data lines, where each of the pixels includes a first transistor configured to control a driving current which flows from a first electrode to a second electrode according to a voltage applied to a gate electrode, a light-emitting element connected to the second electrode and configured to emit light according to the driving current, and a third transistor electrically connected between the gate electrode and the second electrode, the third transistor includes an active layer including a first region connected to the second electrode of the first transistor, a second region connected to the gate electrode of the first transistor, and a channel region between the first region and the second region, and electrical resistance of the second region is greater than electrical resistance of the first region.