Samsung Electronics Co., Ltd.

Jeong Kyun Woo

Soyoung Lee

So-Young Lee

Jungchul An

Sunghyun Kim

Hojung Lee

Hyun-Suk Choi

Seungwon Oh

Eun-Yeung Lee

Seong Won Joo

Sang Sung Lee

Surin Gweon

Soon Jae Park

An amplifier includes a first amplification circuit, a second amplification circuit including first and second amplification transistors controlled by the first amplification circuit to generate first and second output signals and a bias transistor turned on based on a bias signal to generate the first output signal, a filter circuit including a bias capacitor connected to the first amplification transistor and the bias transistor to generate the first bias signal using a first bias voltage, and a feedback circuit configured to receive the first and second output signals and output a feedback signal that adjusts an average of the first and second output signals to correspond to a reference signal, to the first amplifier. The filter circuit adjusts a voltage of the bias capacitor such that a voltage of the bias capacitor when the amplifier is disabled corresponds to a voltage of the bias capacitor when the amplifier is enabled.

Semiconductor device and communication device comprising the same

A portable communication device includes: a foldable housing, a flexible display accommodated in the housing and including a first display area that remains substantially flat in a state in which the housing is folded and a second display area that is bendable as the housing is folded, a support located between the flexible display and the housing and including a first area corresponding to the first display area and having a first flexibility and a second area corresponding to the second display area and having a second flexibility greater than the first flexibility, wherein an opening is formed in the first area, and a sensing module accommodated in the housing and including a light receiving sensor at least partially aligned with the opening to sense light passing through the opening.

Portable communication device including display

A semiconductor device includes a first amplifier configured to amplify a first input signal and a second input signal and output a first amplified signal and a second amplified signal, a second amplifier configured to receive and amplify the first amplified signal and the second amplified signal and output a first output signal and a second output signal, a feedforward circuit configured to receive the first input signal and the second input signal and perform feedforward control on the first output signal and second output signal, and a common-mode feedback circuit configured to receive the first output signal and the second output signal and output a feedback signal configured to adjust an average of the first output signal and the second output signal to correspond to a reference signal, and the common-mode feedback circuit configured to supply the feedback signal to the first amplifier and the feedforward circuit.

Semiconductor device and communication device including the same

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Suwon-si, South Korea

Jeong Kyun Woo