公开(公告)号：US10482817B2

公开(公告)日：2019-11-19

申请号：US15798812

申请日：2017-10-31

Applicant: Samsung Display Co., Ltd.

Inventor： Keunwoo Kim ,  Sooyoung Park ,  Joonghyun Park ,  Dongwoo Kim ,  Kyoung-Ju Shin

IPC: G09G3/36 ,  G09G3/3233 ,  G09G3/3283 ,  H05B33/08

Abstract: A display device includes pixels configured to emit light of various intensity in accordance with driving signals, data lines, scan lines, and a power supply unit configured to supply at least one driving voltage to the pixels. At least one of the pixels may comprise a switching transistor having a first electrode connected to one of the data lines and a second electrode connected to a first node, and a gate electrode connected to one of the scan lines, a driving transistor connected between the power supply unit and an organic light emitting diode, a storage capacitor having a first terminal connected to the first node and a second terminal connected to a gate electrode of the driving transistor, and a first transistor connected between the first node and a first electrode of the driving transistor.

公开(公告)号：US10234736B2

公开(公告)日：2019-03-19

申请号：US15225007

申请日：2016-08-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Keunwoo Kim

IPC: G02F1/1362 ,  G02F1/1343 ,  G02F1/1368 ,  G09G3/36

Abstract: A liquid crystal display device includes at least one pixel that includes first, second, third, and fourth switches connected to at least one gate line and at least one data line, a first sub-pixel electrode connected to the first switch, a second sub-pixel electrode connected to the second switch, a third sub-pixel electrode connected to the third switch, a fourth sub-pixel electrode connected to the fourth switch, a first capacitor connected between a gate electrode and a source electrode of the first switch, a second capacitor connected between a gate electrode and a source electrode of the second switch, a third capacitor connected between a gate electrode and a source electrode of the third switch, and a fourth capacitor connected between a gate electrode and a source electrode of the fourth switch. At least two of the first, second, third, and fourth capacitors have different capacitance values from one another.

公开(公告)号：US09946122B2

公开(公告)日：2018-04-17

申请号：US15448673

申请日：2017-03-03

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Keunwoo Kim

IPC: G02F1/136 ,  G02F1/1343 ,  H01L27/12 ,  G02F1/1362 ,  G02F1/1368

CPC classification number: G02F1/134309 ,  G02F1/133707 ,  G02F1/13624 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2001/133757 ,  G02F2001/134345 ,  G02F2001/136236 ,  G02F2001/136245 ,  G02F2001/13629 ,  G02F2201/123 ,  G02F2202/10 ,  H01L27/124 ,  H01L27/1248 ,  H01L27/1251

Abstract: A liquid crystal display device includes a first substrate spaced from a second substrate, a liquid crystal layer between the first and second substrates, a gate line, a data line, a first sub-pixel electrode, and a second sub-pixel electrode on the first substrate. The display device also includes a first switch and a second switch. The first switch is connected to the gate line, the data line, and the first sub-pixel electrode. The second switch is connected to the gate line, the data line, and the second sub-pixel electrode. The second switch includes a first gate electrode connected to the gate line and a second gate electrode not connected to the gate line.

公开(公告)号：US09746723B2

公开(公告)日：2017-08-29

申请号：US14836601

申请日：2015-08-26

Applicant: Samsung Display Co., Ltd.

Inventor： Gunwoo Yang ,  Keunwoo Kim ,  Youngseung Kim ,  Sooyoung Park ,  Kichan Jeon ,  Munsoo Park

IPC: G02F1/1343 ,  G02F1/1368 ,  G02F1/1337

CPC classification number: G02F1/134309 ,  G02F1/133707 ,  G02F1/1368 ,  G02F2001/134345 ,  G02F2201/40

Abstract: A liquid crystal display (LCD) device improves an aperture ratio and stabilizing a storage voltage, including a first substrate; a second substrate opposed to the first substrate; a liquid crystal layer between the first substrate and the second substrate; a gate line and a data line on the first substrate; a semiconductor layer overlapping the gate line; a first drain electrode overlapping the gate line and the semiconductor layer and connected to the data line; a first source electrode overlapping the gate line and the semiconductor layer; a first sub-pixel electrode connected to the first source electrode; a second drain electrode overlapping the gate line and the semiconductor layer and connected to the first drain electrode; a second source electrode overlapping the gate line and the semiconductor layer; and a second sub-pixel electrode connected to the second source electrode. The second source electrode overlaps the gate line more than the first source electrode does.

公开(公告)号：US20170193955A1

公开(公告)日：2017-07-06

申请号：US15238552

申请日：2016-08-16

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Keunwoo Kim

IPC: G09G3/36 ,  H01L29/786 ,  H01L27/12

CPC classification number: G09G3/3688 ,  G09G3/3677 ,  G09G2300/0413 ,  G09G2300/0426 ,  G09G2300/0452 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2320/0209 ,  G09G2320/0261 ,  G09G2330/021 ,  G11C19/287 ,  H01L27/1222 ,  H01L27/124 ,  H01L27/1255 ,  H01L29/78669 ,  H01L29/7869

Abstract: A display device includes a display panel, a gate driving circuit, and an image determination unit. The gate driving circuit includes a double gate transistor. The image determination unit outputs an image determination signal to a second control electrode of the double gate transistor. When the display panel displays a still image, the double gate transistor is turned on by the image determination signal so that each of gate signals outputted from stages connected in cascade to a stage including the double gate transistor among stages included in the gate driving circuit has a gate-off voltage.

公开(公告)号：US20170193949A1

公开(公告)日：2017-07-06

申请号：US15261779

申请日：2016-09-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Keunwoo Kim

IPC: G09G3/36

CPC classification number: G09G3/3677 ,  G09G3/3688 ,  G09G3/3696 ,  G09G2300/0809 ,  G09G2310/0286

Abstract: A k-th driving stage includes a first pull-down transistor. The first pull-down transistor includes a first control electrode receiving a second control signal activated after the k-th gate signal is output, a second control electrode receiving the switching signal synchronized with a clock signal, an input electrode receiving a first discharge voltage, and an output electrode connected to the output electrode of the first output transistor.