公开(公告)号：US11127366B2

公开(公告)日：2021-09-21

申请号：US16808824

申请日：2020-03-04

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ha Jun Lee ,  Jun Ho Song ,  Jeong Ah Ahn ,  Eun Jong Jang

IPC: G09G3/36 ,  G09G3/3258

Abstract: A source driver including a decoder configured to receive image data and an activation signal, determine a target voltage based on the image data, and select at least one gamma line for generating the target voltage from among a plurality of gamma lines, which are configured to transmit different gamma voltages, respectively, and a buffer circuit including a plurality of input terminals and configured to be connected to the selected at least one gamma line and generate an output voltage based on at least one gamma voltage obtained from the selected at least one gamma line may be provided. The decoder may be further configured to select a gamma line group including the selected at least one gamma line to be connected to the plurality of input terminals of the buffer circuit during a slew period of the buffer circuit in accordance with the activation signal.

公开(公告)号：US11335272B2

公开(公告)日：2022-05-17

申请号：US16793466

申请日：2020-02-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ha Jun Lee ,  Jeong Ah Ahn ,  Ji-Yong Jeong ,  Suk-Yun Woo ,  Young Sub Jin

IPC: G09G3/3291

Abstract: An organic light-emitting diode (OLED) driving characteristic detection circuit is provided. The OLED driving characteristic detection circuit comprising a first current integrator receiving a first current via a first sensing channel and outputting a first sampling voltage based on the first current, a second current integrator receiving a second current via a second sensing channel and outputting a second sampling voltage based on the second current, and a sampling circuit receiving the first and second sampling voltages, followed by storing and holding the first and second sampling voltages, and removing common noise components included in the first and second sampling voltages, a third sampling capacitor and a fourth sampling capacitor which are connected to an output terminal of the second current integrator and store and hold the second sampling voltage, and a plurality of switches which connect first ends of the first sampling capacitor to the fourth sampling capacitor.