公开(公告)号：US20220246099A1

公开(公告)日：2022-08-04

申请号：US17727513

申请日：2022-04-22

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ji Hyun KA ,  Seung Ji CHA ,  Mi Hae KIM ,  Ki Myeong EOM

IPC: G09G3/3258 ,  H01L51/52 ,  G09G3/3233 ,  G09G3/3291 ,  H01L27/32 ,  G09G3/3266 ,  G09G3/20 ,  G09G3/3225 ,  G09G3/3275

Abstract: A display device includes: a first pixel including a first organic light emitting diode; an initialization voltage generator for generating a first initialization voltage to be supplied to an anode of the first organic light emitting diode; and a timing controller including a first lookup table in which a plurality of first initialization voltage values corresponding to a plurality of maximum luminances are recorded, the timing controller being configured to determine a value of the first initialization voltage, based on reception information on a target maximum luminance and the first lookup table.

公开(公告)号：US20220199011A1

公开(公告)日：2022-06-23

申请号：US17693025

申请日：2022-03-11

Applicant: Samsung Display Co., Ltd.

Inventor： Ji Hyun KA ,  Tae Hoon KWON ,  Ki Myeong EOM ,  Chung YI ,  Se Byung CHAE ,  Deok Jun CHOI ,  Moon Sang HWANG

IPC: G09G3/3225 ,  G09G3/3275

Abstract: A display device includes: a display region including a first pixel region, a second pixel region, and a third pixel region; a dummy region including a first dummy region disposed between the second pixel region and the third pixel region; first, second, and third pixels respectively arranged in the first pixel region, the second pixel region, and the third pixel region in a matrix of vertical lines and horizontal lines; a data converter configured to: receive first image data including effective data corresponding to the display region and dummy data corresponding to the dummy region; and generate second image data by converting a gray scale value of dummy data corresponding to at least one region of the first dummy region in the first image data into a predetermined first gray scale value, the first gray scale value being between a lowest gray scale value and a highest gray scale value.

公开(公告)号：US20220085140A1

公开(公告)日：2022-03-17

申请号：US17537237

申请日：2021-11-29

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Keon Woo KIM ,  Ji Hyun KA ,  Tae Hoon KWON ,  Ho Kyoon KWON ,  Min Ku LEE ,  Zail LHEE ,  Jin Tae JEONG ,  Seung Ji CHA ,  Byung Du AHN ,  Jeong Ho LEE

IPC: H01L27/32 ,  H01L51/00 ,  G09G3/3233

Abstract: A display device includes a substrate including a first pixel region, a second pixel region having an area smaller than that of the first pixel region, and a peripheral region surrounding the first pixel region and the second pixel region, a second pixel provided in the second pixel region, a second line connected to the second pixel, an extension line extended to the peripheral region, a dummy part located in the peripheral region to overlap with the extension line, a power line connected to the first and second pixel regions, and a connection line located in the peripheral region to be connected to the dummy part, the connection line being electrically connected to a portion of the second pixel region, wherein the second pixel region includes a first sub-pixel region connected to the connection line and a second sub-pixel region except the first sub-pixel region.

公开(公告)号：US20210390907A1

公开(公告)日：2021-12-16

申请号：US17460474

申请日：2021-08-30

Applicant: Samsung Display Co., Ltd.

Inventor： Ji Hyun KA ,  Won Kyu Kwak ,  Han Sung Bae

IPC: G09G3/3233 ,  G09G3/3266

Abstract: A pixel includes a plurality of transistors and an organic light emitting diode, in which the transistors include a first transistor to control an amount of current flowing to the organic light emitting diode and additional transistors are connected to the first transistor or the organic light emitting diode, the first transistor is a Low Temperature Poly-Silicon (LTPS) thin film transistor, and one or more of the other transistors are oxide semiconductor transistors.

公开(公告)号：US20210175310A1

公开(公告)日：2021-06-10

申请号：US17179860

申请日：2021-02-19

Applicant: Samsung Display Co., Ltd.

Inventor： Ji Hyun KA ,  Han Sung BAE ,  Won Kyu KWAK

IPC: H01L27/32 ,  G09G3/3233 ,  H01L27/12

Abstract: A pixel includes a pixel circuit and an organic light emitting diode. The pixel circuit has first, second, third, and fourth transistors. The first transistor controls an amount of current flowing from a first driving power supply coupled to a first node to a second driving power supply through the organic light emitting diode. The turns on when a scan signal is supplied to a first scan line. The third transistor turns on when a scan signal is supplied to a second scan line. The fourth transistor turns on when a scan signal is supplied to a third scan line. The first transistor is a p-type Low Temperature Poly-Silicon thin film transistor and the third transistor and the fourth transistor are n-type oxide semiconductor thin film transistors.

公开(公告)号：US20200302866A1

公开(公告)日：2020-09-24

申请号：US16679996

申请日：2019-11-11

Applicant: Samsung Display Co., Ltd.

Inventor： Eun Ju KIM ,  Ji Hyun KA

IPC: G09G3/3258

Abstract: There are provided a display device and a driving method of the display device. The display device includes a display panel including a plurality of pixels, and a controller configured to determine an off ratio corresponding to an initialization driving power voltage of the display panel, and configured to control emission of the plurality of pixels corresponding to the determined off ratio, wherein different initialization driving power voltages are determined based on luminances and chromaticities of a plurality of display panels.

公开(公告)号：US20200234642A1

公开(公告)日：2020-07-23

申请号：US16841582

申请日：2020-04-06

Applicant: Samsung Display Co., Ltd.

Inventor： Tae Hoon KIM ,  Ji Hyun KA ,  Seung Kyu LEE

IPC: G09G3/3233 ,  H01L27/32

Abstract: The present disclosure relates to a pixel displaying an image. A pixel includes an organic light emitting diode, a first transistor controlling an amount of current flowing from a first driving power supply to a second driving power supply via the organic light emitting diode in response to a voltage of a first node; a storage capacitor connected between the first node and the first driving power supply; a second transistor connected between a data line and the first node and turned on when a scan signal is supplied to a first scan line, and an auxiliary transistor connected between the second transistor and the data line and turned on when a scan signal is supplied to a second scan line. The second transistor and the auxiliary transistor have an overlapping turn-on period, and the second transistor is turned off before the auxiliary transistor is turned off.

公开(公告)号：US20200160779A1

公开(公告)日：2020-05-21

申请号：US16684107

申请日：2019-11-14

Applicant: Samsung Display Co., Ltd.

Inventor： Min Ku LEE ,  Ji Hyun KA ,  Eun Ju KIM ,  Kwang Sae LEE

IPC: G09G3/32

Abstract: A display device includes: a data line; a first scan line configured to sequentially receive a first scan pulse and a second scan pulse, each of which has a turn-on level; an emission line configured to sequentially receive a first emission pulse, a second emission pulse, a third emission pulse, and a fourth emission pulse, each of which has a turn-on level; and a pixel configured to receive the data signal according to the first and second scan pulses, the pixel being further configured to emit light based on the received data signal according to the first to fourth emission pulses, wherein the first emission pulse is generated before the first scan pulse, the second emission pulse and the third emission pulse are generated in a period between the first scan pulse and the second scan pulse, and the fourth emission pulse is generated after the second scan pulse.

公开(公告)号：US20200119130A1

公开(公告)日：2020-04-16

申请号：US16714545

申请日：2019-12-13

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Yang Wan KIM ,  Ji Hyun KA ,  Tae Hoon KWON ,  Byung Sun KIM ,  Hyung Jun PARK ,  Su Jin LEE ,  Jae Yong LEE ,  Jin Tae JEONG ,  Seung Ji CHA

IPC: H01L27/32 ,  H01L51/52 ,  G09G3/3233

Abstract: A display device includes a substrate having a display area and a non-display area, a plurality of pixels in the display area, scan lines for supplying a scan signal to the pixels, the scan lines extending in a first direction, data lines for supplying a data signal to the pixels, the data lines extending in a second direction crossing the first direction, and a first dummy part in the non-display area, adjacent to an outermost pixel, connected to an outermost data line of the display area, forming a parasitic capacitor with the outermost pixel, and including a first dummy data line and a first dummy power pattern extending in parallel to the data lines.

公开(公告)号：US20190287457A1

公开(公告)日：2019-09-19

申请号：US16429228

申请日：2019-06-03

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seung Kyu LEE ,  Seung Ji CHA ,  Ji Hyun KA ,  Tae Hoon KWON ,  Min Ku LEE ,  Jin Tae JEONG

IPC: G09G3/3225 ,  G09G3/3275 ,  G09G3/3233 ,  G09G3/3266

Abstract: A stage includes an output, an input, signal processors, and a stabilizer. The output supplies a voltage of a first or second power source to an output terminal based on voltages of first and second nodes. The input controls voltages of third and fourth nodes based on signals to a first and second input terminals. A first signal processor controls the voltage of the first node based on the voltage of the second node. A second signal processor is connected to a fifth node and controls the voltage of the first node based on a signal to a third input terminal. A third signal processor controls the voltage of the fourth node based on the voltage of the third node and the signal to the third input terminal. The stabilizer is connected between the second signal processor and input to control voltage drop widths of the third and fourth nodes.