公开(公告)号：US20250104591A1

公开(公告)日：2025-03-27

申请号：US18825650

申请日：2024-09-05

Applicant: Samsung Display Co., LTD.

Inventor： HYUNHO LIM ,  Yoosung Kim

IPC: G09G3/20

Abstract: A display apparatus includes: a display panel including a pixel and configured to display an image based on input image data; a gate driver configured to output a gate signal to the pixel; a data driver configured to output a data voltage to the pixel; and a gamma reference voltage generator including a gamma bias circuit configured to generate a bias current based on a gamma voltage range which is from a voltage level corresponding to a zero grayscale to a voltage level corresponding to a setting luminance and a gamma amplifying circuit configured to receive the bias current, the gamma reference voltage generator being configured to generate gamma reference voltages and to output the gamma reference voltages to the data driver.

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：US20240231467A1

公开(公告)日：2024-07-11

申请号：US18230665

申请日：2023-08-07

Applicant: Samsung Display Co., Ltd.

Inventor： HYUNHO LIM ,  Yoosung Kim

IPC: G06F1/3234 ,  G06F1/3296

CPC classification number: G06F1/3265 ,  G06F1/3296 ,  G09G3/3291 ,  G09G2330/021 ,  G09G2330/028

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.