Samsung Electronics Co., Ltd.

Insuk Kim

Jungmoon Kim

Jeongpyo Kim

Yeonjeong Lee

Sungjin Park

Taeksu Kwon

Byunghun Han

Seunggun Ham

A display device includes a first decoder configured to select a first input voltage based on one or more gamma voltages during a first calibration sequence of a plurality of calibration sequences, a first amplifier configured to generate and output a first output voltage during the first calibration sequence, the first output voltage generated by amplifying the first input voltage, a second decoder configured to select one or more first reference voltages based on the one or more gamma voltages during the first calibration sequence, a second amplifier configured to output a first comparison result during the first calibration sequence based on the first output voltage and the one or more first reference voltages, and processing circuitry configured to determine a first compensation value based on the first comparison result during the first calibration sequence, the first compensation value compensating for a first offset of the first output voltage.

Display device based on amplifier offset compensation and operating method thereof

An integrated circuit includes: a power supply circuit configured to generate a supply voltage from at least one of first and second power source voltages; and a system load configured to operate by receiving the supply voltage through an output node of the power supply circuit, wherein the power supply circuit includes: a first low drop-output (LDO) regulator configured to generate, from the first power source voltage, a first load current flowing to the system load through the output node; and a second LDO regulator configured to selectively generate a second load current flowing to the system load through the output node, from the second power source voltage based on a difference between voltages of internal nodes of the first LDO regulator.

Integrated circuit and electronic device including the same

An OLED display system includes a display panel, a driving circuit, a voltage generator and a power management application circuit (PMAC). The driving circuit provides scan signals to the display panel. The voltage generator generates a negative voltage based on a first driving voltage having a positive level and a second driving voltage having a negative level and provides the negative voltage to the driving circuit. The PMAC includes a power management application circuit (PMIC) and an additional circuit distinct from the PMIC and disposed externally to the PMIC. The PMIC applies a high power supply voltage and a low power supply voltage to the display panel and generates the first driving voltage based on a battery voltage. The additional circuit generates the second driving voltage based on the battery voltage. The driving circuit generates at least one of the scan signals based on the negative voltage.

Organic light emitting diode display system

Growing community of inventors

Suwon-si, South Korea

Insuk Kim