Samsung Electronics Co., Ltd.

Hyunkyu Ouh

Bumsoo Kim

Jinchul Lee

Junchul Park

Yoonkyung Choi

Chadong Kim

Michael Choi

Kyunghoon Lee

Yoon-Kyung Choi

San-ho Byun

Sanho Byun

Hojin Park

Sanghyub Kang

Sang-Hyub Kang

A touch analog front-end (AFE) for a touch sensitive screen may include a transmitter configured to charge a touch panel and a receiver configured to sense the touch panel. The receiver may include a charge-to-voltage (C2V) converter configured to convert a change of capacitance received from the touch panel into a voltage signal, a correlated double sampling (CDS) block configured to convert the voltage signal into a differential signal and to sample each of the positive and the negative signals of the differential signal, and an integrator configured to accumulate a difference between the sampled positive and negative signals.

Touch analog front end and touch sensor controller having the same

A touch display device configured to drive a signal line in a first plurality of steps during a line-sensing period and adjust an offset capacitance in a second plurality of steps corresponding to the first plurality of steps.

Touch display device for controlling offset capacitance calibration

Provided are a semiconductor device and a semiconductor system, which can increase immunity against noises through tertiary correlated double sampling (CDS). The semiconductor device includes an amplifier that receives noise and a driving signal, resets for each predetermined period of the driving signal and samples the noise to generate first sampled noise. The first sampled noise includes multiple noise differences each occurring between consecutive reset points. A sampler performs second sampling and third sampling on the first sampled noise and performs fourth sampling on the second and third sampled noises. The first sampled noise includes first to third noise differences, the second sampled noise is a difference between the first and second noise differences, the third sampled noise is a difference between the second and third noise differences, and the fourth sampled noise is a difference between the second and third sampled noises.

Semiconductor device and semiconductor system for producing noise differences between points of time

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Yongin-si, South Korea

Hyunkyu Ouh