Seiko Epson Corporation

Shigeaki Kawano

Keisuke Hashimoto

Kota Onishi

Nobutaka Shiozaki

Kota Muto

Hiroshi Kiya

Hidenori Yato

Masaya Ninomiya

Hiroaki Nomizo

A driver includes a power supply circuit including a voltage boosting circuit that generates a boosted voltage by performing a voltage boosting operation, and a driving circuit that receives a power supply from the power supply circuit, and samples a driving voltage to drive a display panel. The voltage boosting circuit has a voltage boosting unit having a voltage boosting transistor, and a voltage boosting control circuit that outputs a voltage boosting clock signal to the voltage boosting unit. The voltage boosting control circuit stops the voltage boosting clock signal in a first period that includes a timing of an end of a sampling period of the driving circuit.

Driver, electro-optical apparatus, and electronic device

An integrated circuit device that drives an electro-optical panel using a driving waveform which is set in a plurality of phases includes: a driving voltage generation unit that operates while receiving a supply of a power supply voltage generated by a power supply circuit, and generates a plurality of driving voltages to be applied to a plurality of electrodes in the electro-optical panel in each of a plurality of phases, in accordance with display data; and a power supply control unit that sets current supply capability of the power supply circuit to a first level synchronously with a timing of start of a phase, and sets the current supply capability to a second level, which is lower than the first level.

Integrated circuit device and electronic device

A circuit device includes: a first storage control unit which receives power from a power receiving unit which receives power by electromagnetic induction, to perform control of storing charge in a first charge storage unit; a second storage control unit which performs control of storing charge in a second charge storage unit; and a power source supply unit which supplies power source to a system device based on charges stored in the first charge storage unit and the second charge storage unit. The second charge storage unit is a charge storage unit whose charge storage capacitance is smaller than that of the first charge storage unit. The power source supply unit supplies, at the time of system start-up after the start of power reception, power source based on the stored charge of the second charge storage unit to the system device.

Circuit device, electronic apparatus, and IC card

An integrated circuit device includes: a driving voltage output unit that outputs a driving voltage supplied to a segment electrode of an electro-optical panel; a display data storage unit that stores display data; and a driving waveform information output unit that outputs driving waveform information when a display state of the segment electrode is changed from a first display state corresponding to first display data to a second display state corresponding to second display data, wherein the driving voltage output unit outputs the driving voltage specified by the first display data and the second display data from the display data storage unit, and the driving waveform information from the driving waveform information output unit.

Integrated circuit device and electronic apparatus

An integrated circuit device generates drive waveforms which can be adapted to a plurality of panels by a function of setting a repetition period, the function setting which of periods in a drive waveform pattern is to be repeated, and a function of setting the number of times, the function setting what number of times the set period is to be repeated.

Growing community of inventors

Chino, Japan

Shigeaki Kawano