公开(公告)号：US20150194085A1

公开(公告)日：2015-07-09

申请号：US14306879

申请日：2014-06-17

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： YANG UK NAM ,  Jong Jae Lee ,  Bon-Sung Koo ,  Jun Dal Kim ,  Se Young Heo ,  Jun Ki Hong

IPC: G09G3/20

CPC classification number: G09G3/3696 ,  G09G3/3208 ,  G09G2330/028

Abstract: A driving voltage generating device, a display device including the same, and a method of generating a driving voltage are provided. The driving voltage generating device includes a driving voltage setting unit receiving initially set data on a driving voltage and a feedback voltage and outputting a control signal, a driving voltage trimmer receiving finely adjusted data on the driving voltage and adjusting the feedback voltage, and a DC to DC converter generating the driving voltage based on the control signal and an input voltage.

Abstract translation: 提供驱动电压产生装置，包括该驱动电压产生装置的显示装置和产生驱动电压的方法。 驱动电压产生装置包括驱动电压设定单元，其接收关于驱动电压和反馈电压的初始设定数据并输出控制信号，驱动电压微调器接收关于驱动电压的微调数据并调整反馈电压，以及DC 直流转换器基于控制信号和输入电压产生驱动电压。

公开(公告)号：US11830417B2

公开(公告)日：2023-11-28

申请号：US17965576

申请日：2022-10-13

Applicant: Samsung Display Co., LTD.

Inventor： Tae Gon Im ,  Jong Jae Lee ,  Dae Gwang Jang

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/027 ,  G09G2310/0262 ,  G09G2310/0286 ,  G09G2310/0291 ,  G09G2310/08

Abstract: A display device includes: a pixel unit including a plurality of pixels; a data driver configured to supply a data voltage to the pixels through data lines based on a source output enable signal; and a reference voltage controller configured to supply a reference voltage to the pixels through reference voltage lines, wherein each of the pixels includes a light emitting element between a first power source line and a second power source line, and wherein the reference voltage controller is configured to compensate for the reference voltage based on the source output enable signal, and to supply a compensated reference voltage to an anode electrode of the light emitting element.

公开(公告)号：US11790857B2

公开(公告)日：2023-10-17

申请号：US17741766

申请日：2022-05-11

Applicant: Samsung Display Co., LTD.

Inventor： Soo Yeon Kim ,  Tae Gon Im ,  Jong Jae Lee ,  Dae Gwang Jang

IPC: G09G3/3275

CPC classification number: G09G3/3275 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2310/08

Abstract: A display device includes a display panel including data lines and pixels electrically connected to the data lines. The data driver supplies data signals to the data lines. The data driver includes: a first output buffer electrically connected to a first data line of the data lines, the first output buffer outputting a first data signal to the first data line; and a first comparator electrically connected to an output terminal of the first output buffer, the first comparator comparing a first slew rate of the first data signal with a first reference slew rate.

公开(公告)号：US11315452B2

公开(公告)日：2022-04-26

申请号：US17069254

申请日：2020-10-13

Applicant: Samsung Display Co., Ltd.

Inventor： Gwang Soo Ahn ,  Sung Soo Choi ,  Jong Jae Lee

IPC: G09G3/00 ,  G09G3/20

Abstract: A display apparatus includes a display panel, a timing controller and a power management integrated circuit (PMIC). The timing controller is to control an operation of the display panel and to store a plurality of fault patterns to be displayed on the display panel to represent that a plurality of defective phenomena have occurred. The PMIC is to supply a first power supply voltage to the timing controller and to monitor whether the plurality of defective phenomena have occurred. When a first defective phenomenon among the plurality of defective phenomena is sensed, the PMIC is to store first fault data and to shut down the display panel. When the first defective phenomenon is sensed, the timing controller is to control the display panel to display a first fault pattern corresponding to the first defective phenomenon among the plurality of fault patterns before the display panel is shut down.

公开(公告)号：US11170729B2

公开(公告)日：2021-11-09

申请号：US16857106

申请日：2020-04-23

Applicant: Samsung Display Co., Ltd.

Inventor： Gwangsoo Ahn ,  Dae-Sik Lee ,  Jong Jae Lee

IPC: G09G3/36

Abstract: A power management circuit of a display device includes a voltage information storage comprising a first and second bank storing first and second voltage information corresponding to first and second voltage levels different from each other, a bank select pin receiving a bank select signal, a voltage information selecting circuit selectively outputting the first voltage information stored in the first bank or the second voltage information stored in the second bank in response to the bank select signal received through the bank select pin, and a DC-DC converter generating panel driving voltages having the first voltage levels based on the first voltage information when the first voltage information is output from the voltage information selecting circuit, and generating the panel driving voltages having the second voltage levels based on the second voltage information when the second voltage information is output from the voltage information selecting circuit.

公开(公告)号：US11170686B2

公开(公告)日：2021-11-09

申请号：US17023806

申请日：2020-09-17

Applicant: Samsung Display Co., Ltd.

Inventor： Keun Oh Kang ,  Dae-Sik Lee ,  Ji Youn Seo ,  Jong Jae Lee

IPC: G09G3/20

Abstract: A display device includes a display panel including a plurality of pixels, a controller which generates a gate reference signal, a gate control circuit which outputs a gate driving signal based on the gate reference signal, and a gate driving circuit which provides gate signals to the plurality of pixels based on the gate driving signal. The gate control circuit includes a protection enable circuit which detects a first period of the gate reference signal, determines whether the period of the gate reference signal is changed, and generates a protection enable signal when the first period of the gate reference signal is not changed, and an over-current protection circuit which generates an over-current occurrence signal by detecting an over-current of the gate driving signal, and stops outputting the gate driving signal based on the over-current occurrence signal and the protection enable signal.