公开(公告)号：US20230360592A1

公开(公告)日：2023-11-09

申请号：US18295052

申请日：2023-04-03

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： KIHYUN PYUN ,  MIN-SOO CHOI

IPC: G09G3/32 ,  G09G3/20

CPC classification number: G09G3/32 ,  G09G3/2096 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2330/06 ,  G09G2310/0275

Abstract: A display device includes a display panel including a plurality of pixels, a data driver configured to apply a plurality of data voltages generated based on input image data to the pixels, an initialization voltage generator configured to generate an initialization voltage that initializes a light emitting element included in each of the pixels, a timing controller configured to generate a constant current control signal based on a load of the input image data, and a constant current generator configured to generate and transmit a constant current to the initialization voltage generator in response to the constant current control signal. As a result, the display device may reduce ripple of an initialization voltage by adjusting the initialization voltage according to a load of input image data, and a display device having a desirable signal-to-noise ratio (SNR) characteristic of a sensing operation may be provided.

公开(公告)号：US20230351963A1

公开(公告)日：2023-11-02

申请号：US18124044

申请日：2023-03-21

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  SUNG-MO YANG

IPC: G09G3/3233 ,  G09G3/20

CPC classification number: G09G3/3233 ,  G09G3/2096 ,  G09G2300/0842 ,  G09G2330/028 ,  G09G2310/08 ,  G09G2330/025 ,  G09G2330/12 ,  G09G2330/021 ,  G09G2320/0271

Abstract: A display device may include a display panel displaying an image and including pixels, a driving voltage controller including an overcurrent detector generating an alert signal when a driving current of the display panel is greater than a reference current, a load calculator calculating a load of input image data in response to the alert signal and generating a load escape signal when the load is greater than a reference load, a vertical blank counter generating a vertical blank count value by counting a time of a vertical blank period in response to the alert signal and the load escape signal, and generating a counter escape signal when the vertical blank count value is greater than a reference count value, and a driving voltage generator altering a driving voltage provided to the display panel in response to the alert signal and the counter escape signal.

公开(公告)号：US20230298528A1

公开(公告)日：2023-09-21

申请号：US18098695

申请日：2023-01-19

Applicant: Samsung Display Co., Ltd.

Inventor： JANG-MI LEE ,  EUNJIN CHOI ,  KIHYUN PYUN

IPC: G09G3/3258 ,  G09G3/32

CPC classification number: G09G3/3258 ,  G09G3/32 ,  G09G2330/08 ,  G09G2330/04

Abstract: Disclosed is a display device including a display panel, a voltage generator, a current detector, and a current controller. The display panel includes a pixel for receiving a driving voltage. The voltage generator generates the driving voltage, determines a voltage level of the driving voltage based on a voltage control signal, and performs a protection operation in response to a protection signal. The current detector detects a driving current of the display panel and outputs a current signal corresponding to the detected driving current. The current controller includes a current comparison unit that generates a result signal by comparing a present current level of the current signal from the current detector to a previous current level and a protection operating unit that receives the result signal and outputs the protection signal based on a change in the load and a difference between the target current and the current signal.

公开(公告)号：US20220309979A1

公开(公告)日：2022-09-29

申请号：US17569802

申请日：2022-01-06

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  KYOUNGHO LIM

IPC: G09G3/20

Abstract: A display apparatus includes a display panel, a data driver, a driving controller and a power voltage generator. The display panel displays an image. The data driver outputs a data voltage to the display panel. The driving controller controls an operation of the data driver. The power voltage generator outputs a power voltage of the display panel. The data driver outputs a clock recovery signal representing whether a clock recovery operation is normal or abnormal to the driving controller. The driving controller generates an overcurrent signal representing an overcurrent based on the clock recovery signal and outputs the overcurrent signal to the power voltage generator.

公开(公告)号：US20220165200A1

公开(公告)日：2022-05-26

申请号：US17445941

申请日：2021-08-25

Applicant: Samsung Display Co., Ltd.

Inventor： HEESOOK PARK ,  KIHYUN PYUN

IPC: G09G3/20

Abstract: An embodiment of a display apparatus includes a display panel, a driving controller, and a data driver. In operation the driving controller determines a gain reducing area based on an edge load of input image data corresponding to an edge area of the display panel and compensates a grayscale value of the input image data corresponding to the gain reducing area to generate a data signal. The data driver converts the data signal to a data voltage and outputs the data voltage to the display panel.

公开(公告)号：US20220148501A1

公开(公告)日：2022-05-12

申请号：US17361840

申请日：2021-06-29

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  MINYOUNG PARK ,  EUNJIN CHOI

IPC: G09G3/3233

Abstract: A display device includes a display panel which displays an image, a current compensator and a panel driver. The current compensator calculates a load based on input image data and compensates the input image data to output compensation image data having a target current corresponding to the load. The panel driver drives the display panel based on the compensation image data. The current compensator calculates the load for the input image data based on a combination of load weights calculated by different variables.

公开(公告)号：US20210390906A1

公开(公告)日：2021-12-16

申请号：US17192779

申请日：2021-03-04

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  SIDUK SUNG

IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/3291

Abstract: A display device includes a switch, an initialization line, a capacitor, a data line, a first transistor, a second transistor, a driving transistor, and a diode. The capacitor includes a first electrode and a second electrode. To the first electrode through at least the initialization line, the switch may output a first voltage in a first period of a horizontal time and may output a second voltage unequal to the first voltage in a second period of the horizontal time. The first transistor may connect the data line to the first electrode in response to a scan signal. The driving transistor may provide a driving current based on a voltage of the first electrode. The second transistor may connect the initialization line to the second electrode in response to an initialization signal. The diode may emit light based on the driving current.

公开(公告)号：US20240371326A1

公开(公告)日：2024-11-07

申请号：US18427919

申请日：2024-01-31

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： KIHYUN PYUN ,  SUNG-MO YANG

IPC: G09G3/3258

Abstract: Disclosed is a display device which includes a display panel including a plurality of pixels, a voltage generator providing a driving voltage to the plurality of pixels, and a driving controller. The driving controller includes an overcurrent protecting circuit. The overcurrent protecting circuit includes a first logic circuit comparing a limit current with a sensing current to generate a first comparison result, a second logic circuit comparing a load with a limit load to generate a second comparison result and comparing the driving voltage with a limit voltage to generate a third comparison result. When the first comparison result indicates the sensing current is greater than or equal to the limit current, the second comparison result indicates the load is greater than the limit load and the third comparison result indicates the driving voltage is greater than the limit voltage, a driving voltage controller maintains the driving voltage.

公开(公告)号：US20230410711A1

公开(公告)日：2023-12-21

申请号：US18135273

申请日：2023-04-17

Applicant: SAMSUNG DISPLAY CO., LTD

Inventor： KIHYUN PYUN ,  HEESOOK PARK

IPC: G09G3/20

CPC classification number: G09G3/2007 ,  G09G2330/028 ,  G09G2320/0673 ,  G09G2320/0223 ,  G09G2330/021

Abstract: A display apparatus including: a display panel including a plurality of display blocks; and a display panel driver configured to generate a power voltage based on a maximum grayscale value of input image data and a position of a maximum load block among the display blocks and configured to output the power voltage to the display panel, wherein the maximum load block has a largest load of the input image data among the display blocks.

公开(公告)号：US20230402015A1

公开(公告)日：2023-12-14

申请号：US18130671

申请日：2023-04-04

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  Jungeon An

IPC: G09G3/3275 ,  G09G3/3266

CPC classification number: G09G3/3275 ,  G09G3/3266 ,  G09G2310/027 ,  G09G2330/028 ,  G09G2330/021 ,  G09G2320/0247 ,  G09G2320/0271

Abstract: A display device includes pixels which displays an image based on image data, a driving voltage generator which provides a driving voltage to each of the pixels, and a driving voltage controller which calculates block pixel numbers corresponding to first to nth grayscale blocks based on the image data, calculates maximum grayscales with respect to the first to nth grayscale blocks based on the image data, determines a maximum grayscale block among the first to nth grayscale blocks by comparing the block pixel numbers to minimum pixel numbers corresponding to the first to nth grayscale blocks, determines a maximum grayscale with respect to the maximum grayscale block based on the maximum grayscales, calculates a load of the image data, calculates a voltage drop amount of the driving voltage based on the load, and calculates a magnitude of the driving voltage based on the maximum grayscale and the voltage drop amount.