公开(公告)号：US11538374B2

公开(公告)日：2022-12-27

申请号：US17181309

申请日：2021-02-22

Applicant: Samsung Display Co., Ltd.

Inventor： Sung Soo Choi ,  Dae-Sik Lee ,  Ji Youn Seo ,  Gwang Soo Ahn ,  Jong Jae Lee ,  Geun Hyuk Choi

IPC: G09G3/20 ,  G09G3/00

Abstract: A power voltage generator includes a voltage sensor and a power controller. The voltage sensor is configured to sense a first voltage in a first charge sharing period of a gate clock signal and a second voltage in a second charge sharing period of the gate clock signal. The power breaker is configured to disconnect a power based on the first voltage and the second voltage.

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.

公开(公告)号：US12249272B2

公开(公告)日：2025-03-11

申请号：US18486985

申请日：2023-10-13

Applicant: Samsung Display Co., Ltd.

Inventor： Sang Jin Jeon ,  Min Chul Shin ,  Jung Hwan Hwang ,  Sung Hwan Kim ,  Ji Youn Seo ,  Kye Uk Lee

IPC: G09G3/32

Abstract: Provided are a display device and a tiled display comprising the same. The display device includes PWM data lines for respectively receiving PWM data voltages, first to third data lines for respectively receiving first to third data voltages, sub-pixels respectively connected to the PWM data lines, respectively connected to the first to third data lines, and respectively including at least one light-emitting element, a global power supply line for receiving a global power supply voltage, and a first demultiplexer between the PWM data lines and the global power supply line, wherein the PWM data voltages have grayscale voltages from a black grayscale voltage to a white grayscale voltage, the black grayscale voltage being greater than or equal to the global power supply voltage.

公开(公告)号：US12230195B2

公开(公告)日：2025-02-18

申请号：US18425663

申请日：2024-01-29

Applicant: Samsung Display Co., LTD.

Inventor： Kye Uk Lee ,  Jung Hwan Hwang ,  Ji Youn Seo

IPC: H01L27/12 ,  G09G3/32 ,  H01L25/16

Abstract: A display device includes PWM data lines to receive PWM data voltages, first to third data lines to receive corresponding data voltages from among first to third data voltages, sweep signal lines to receive sweep signals, and a sub-pixel connected to a PWM data line from among the PWM data lines, a data line from among the first to third data lines, and a sweep signal line from among the sweep signal lines, and includes at least one light emitting element. The sub-pixel may include a first transistor, a first capacitor electrode connected to a gate electrode of the first transistor, and a second capacitor electrode connected to the sweep signal line, and overlapping the first capacitor electrode in a thickness direction of the display device. The second capacitor electrode does not overlap a source electrode and a drain electrode of the first transistor in the thickness direction.