公开(公告)号：US11423847B2

公开(公告)日：2022-08-23

申请号：US16823184

申请日：2020-03-18

Applicant: Samsung Display Co., Ltd.

Inventor： Hyunho Lim ,  Bongho Bae ,  Ok-Kwon Shin ,  Hyun Ha Yang ,  Chongguk Lee ,  Myeong Bin Lim ,  Sehui Jang

IPC: G09G3/3291 ,  G09G3/36

Abstract: A display device includes: a display panel including a plurality of pixels; a power management circuit configured to generate an analog power supply voltage; and a data driver configured to provide a pre-emphasis voltage and a data voltage to the plurality of pixels based on the analog power supply voltage, wherein the display device is configured to adjust a voltage level of the pre-emphasis voltage according to a distance from the data driver to each of the plurality of pixels to which the pre-emphasis voltage is applied, and wherein the display device is configured to adjust a voltage level of the analog power supply voltage according to the adjusted voltage level of the pre-emphasis voltage.

公开(公告)号：US12260829B2

公开(公告)日：2025-03-25

申请号：US18433453

申请日：2024-02-06

Applicant: Samsung Display Co., Ltd.

Inventor： Yoosung Kim ,  Hyunho Lim

IPC: G09G3/3275

Abstract: A data driving circuit of a display device is disclosed that includes a latch circuit to latch a data signal in response to a latch enable signal and to output a first signal, a level shifter to output a second signal obtained by changing a voltage level of the first signal, a digital-analog converter to output a third signal obtained by converting the second signal into an analog signal, an amplifier to output a fourth signal obtained by amplifying the third signal, a switch to output the fourth signal in a form of an image signal, in response to an output enable signal, and a signal generator to generate the latch enable signal and the output enable signal. The signal generator adjusts a start timing of the active duration of the latch enable signal, such that the active duration of the latch enable signal starts, after the inactive duration of the output enable signal starts.

公开(公告)号：US12164361B2

公开(公告)日：2024-12-10

申请号：US18230665

申请日：2023-08-07

Applicant: Samsung Display Co., Ltd.

Inventor： Hyunho Lim ,  Yoosung Kim

IPC: G06F1/32 ,  G06F1/3234 ,  G06F1/3296 ,  G09G3/3275 ,  G09G3/3291

Abstract: A display device comprises a display panel including a pixel connected to a data line, a power management circuit including a first voltage generating circuit which generates a first driving voltage and provides the first driving voltage to a data driver in a normal mode, a first voltage converter which generates a parking voltage less than the first driving voltage and provides the parking voltage to the data driver in a low power mode, and a second voltage converter which generates a second driving voltage and provides the second driving voltage to the data driver in the low power mode, and a driving controller configured to receive input image data and to control the data driver and the power management circuit. The data driver provides a data voltage to the data line in the normal mode and provides the parking voltage to the data line in the low power mode.

公开(公告)号：US11948514B2

公开(公告)日：2024-04-02

申请号：US17862507

申请日：2022-07-12

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyunho Lim ,  Myeongbin Lim ,  Hyunha Yang

IPC: G09G3/3275

CPC classification number: G09G3/3275 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2330/021 ,  G09G2340/16

Abstract: A display device including: a display panel including a plurality of pixels; a data driver configured to provide data voltages to the plurality of pixels; and a controller configured to control the data driver, to detect a same data region of the display panel when first image data in a current frame period is the same as second image data in a previous frame period, and not to transfer the first image data to the data driver in the current frame period.

公开(公告)号：US11069276B2

公开(公告)日：2021-07-20

申请号：US16741346

申请日：2020-01-13

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyunho Lim ,  Bongho Bae ,  Ok-Kwon Shin ,  Chongguk Lee ,  Myeong Bin Lim ,  Sehui Jang

IPC: G09G3/20

Abstract: A display apparatus includes a display panel, a gate driver, a data driver and a gamma reference voltage generator. The display panel is configured to display an image based on input image data. The gate driver is configured to output a gate signal to the display panel. The data driver is configured to output a data voltage to the display panel. The gamma reference voltage generator includes a plurality of gamma amplifiers having varied bias currents. The gamma reference voltage generator is configured to generate gamma reference voltages and to output the gamma reference voltages to the data driver.