公开(公告)号：US20230282142A1

公开(公告)日：2023-09-07

申请号：US18082071

申请日：2022-12-15

Applicant: Samsung Display Co., Ltd.

Inventor： DAE-SIK LEE ,  KEUNOH KANG ,  SANGHYUN LEE

IPC: G09G3/00

CPC classification number: G09G3/006 ,  G09G3/3208

Abstract: A display device includes: a display panel including a plurality of pixels, which displays an image; a first circuit board connected to the display panel and which provides a first signal to the display panel; a second circuit board, which provides a second signal to the first circuit board, and a connection board, which electrically connects the first circuit board to the second circuit board and includes a connection portion connected to the first circuit board and the second circuit board. The second circuit board includes a connection detection circuit, which detects a connection status of the connection portion and generates a detection signal.

公开(公告)号：US20230368719A1

公开(公告)日：2023-11-16

申请号：US17979028

申请日：2022-11-02

Applicant: Samsung Display Co., Ltd.

Inventor： SANGHYUN LEE ,  DAE-SIK LEE ,  KEUNOH KANG ,  SIDUK SUNG ,  SONGYI HAN

IPC: G09G3/20

CPC classification number: G09G3/2011 ,  G09G2320/0673 ,  G09G2320/0276 ,  G09G2310/027

Abstract: A gamma voltage generator within a display device includes a plurality of gamma generation circuits that respectively generate a plurality of gamma voltages. At least one gamma generation circuit includes an input circuit configured to receive a first reference voltage and a second reference voltage, a reference voltage select circuit configured to select a reference voltage among the first reference voltage and the second reference voltage by comparing a gamma voltage generated by the at least one gamma generation circuit with the first reference voltage and the second reference voltage, a digital-to-analog conversion circuit configured to generate an analog voltage corresponding to a gamma code based on the reference voltage selected by the reference voltage select circuit, and an output circuit configured to output the gamma voltage based on the analog voltage.

公开(公告)号：US20230317013A1

公开(公告)日：2023-10-05

申请号：US18087902

申请日：2022-12-23

Applicant: Samsung Display Co., Ltd.

Inventor： SANGHYUN LEE ,  DAE-SIK LEE ,  KEUNOH KANG ,  SIDUK SUNG ,  SONGYI HAN

IPC: G09G3/3258

CPC classification number: G09G3/3258 ,  G09G2330/04

Abstract: A display device includes a display panel including a pixel circuit, a display panel driving circuit that drives the display panel, a voltage generating circuit that receives an input power supply voltage when the display device is powered on and generates display panel voltages and driving circuit voltages based on the input power supply voltage, and an over-current protecting circuit that monitors an over-current generated inside the display device and generates a shut-down request signal when the over-current is detected. The voltage generating circuit outputs an initialization voltage at a first time point corresponding to a time point at which the input power supply voltage is received. The display panel driving circuit outputs a scan clock signal at a second time point. The over-current protecting circuit performs a first over-current protecting operation in a power-on monitoring period set between the first time point and the second time point.