Seiko Epson Corporation

Hiroshi Kiya

Masayuki Kamiyama

Toshiya Usuda

Hidehiko Yajima

Tsuyoshi Yoneyama

Toru Shirotori

Sho Matsuzaki

Hisashi Yamaguchi

Hiroaki Nomizo

Masaki Wakamori

Katsuhiko Maki

Satoru Kodaira

Yuichi Toriumi

Motoaki Nishimura

Teppei Higuchi

Haruo Kamijo

Keisuke Hashimoto

Jun Uehara

Shigeaki Kawano

Hidenori Yato

Nobuyuki Oikawa

Chihiro Shin

A circuit device includes a first terminal, a first oscillation circuit oscillating a resonator and generating a first voltage for automatic gain control for controlling amplitude of a signal output from the resonator, a digital signal generation circuit generating a digital signal corresponding to the first voltage, and a first interface circuit outputting the digital signal to the first terminal.

Circuit device and oscillator

A vibrator device includes a vibrator having a first and second electrode, and a circuit device having a drive circuit adapted to drive the vibrator, and an output circuit adapted to output a monitor signal corresponding to a vibration characteristic of the vibrator while driven by the drive circuit. The circuit device includes a first terminal electrically connected to the first electrode, and from which an output signal from the drive circuit to the vibrator is output, a second terminal electrically connected to the second electrode, and to which an input signal from the vibrator to the drive circuit is input, a third terminal electrically separated from the first electrode and the second electrode, and a monitor terminal from which the monitor signal is output. The vibrator is supported on an active surface side of the circuit device using conductive bumps respectively to the first, second, and third terminal.

Vibrator device, circuit device, method of manufacturing vibrator device, electronic apparatus, and vehicle

A circuit device includes an oscillation circuit that generates an oscillation signal by using an oscillator, a processing unit that controls the oscillation circuit, and an interface unit that outputs authentication information to an external device. The authentication information being information based on specific information of the circuit device and is used to authenticate the circuit device.

Circuit device, oscillation device, physical quantity measuring device, electronic apparatus, and vehicle

A power supply switching circuit that selects one power supply potential from among a plurality of power supply potentials. This power supply switching circuit is provided with a transistor QPthat is connected between an input node Nand node Nand has a back gate connected to node N, a transistor QPthat is connected between node Nand output node Nand has a back gate connected to node N, a transistor QPthat is connected between input node Nand node Nand has a back gate connected to node N, a transistor QPthat is connected between the node Nand Nand has a back gate connected to node N, and a control signal generation unit that sets a group of transistors QPand QPand a group of transistors QPand QPto a conduction state and sets the other to a non-conduction state.

Power supply switching circuit and electronic device

An oscillation circuit includes an oscillating circuit adapted to oscillate a resonator element, a capacitance circuit connected to the oscillating circuit, and capable of correcting an oscillation frequency of the oscillating circuit, a logic circuit to which a signal output from the oscillating circuit is input, and which is capable of correcting a frequency of the signal, and a control circuit adapted to control an operation of the capacitance circuit and an operation of the logic circuit.

Oscillation circuit, electronic apparatus, and moving object

An oscillation circuit includes an oscillating circuit adapted to oscillate a resonator element having a frequency-temperature characteristic, and a frequency adjustment circuit having a capacitance circuit connected to the oscillating circuit and adapted to adjust an oscillation frequency of the oscillating circuit, and a logic circuit, to which a signal having been output from the oscillating circuit is input, and which adjusts a frequency of the signal, and the frequency adjustment circuit compensates the frequency-temperature characteristic using at least the capacitance circuit in a predetermined temperature range, and compensates the frequency-temperature characteristic using the logic circuit alone outside the predetermined temperature range.

A voltage output circuit includes a first power supply terminal, a second power supply terminal, an output terminal, a switch circuit present in a supply path of a voltage from the second power supply terminal to the output terminal and configured to supply the voltage from the second power supply terminal to the output terminal when the switch circuit is in a closed state and interrupt the supply of the voltage from the second power supply terminal to the output terminal when the switch circuit is in an open state, a switch control circuit configured to fix the switch circuit in the open state on the basis of the voltage at the second power supply terminal, and a switch control circuit configured to release the fixing of the open state of the switch circuit on the basis of the voltage at the first power supply terminal.

Voltage output circuit, electronic apparatus, moving object, manufacturing method for voltage output circuit, and manufacturing method for electronic apparatus

A power supply switching circuit includes a switching circuit that electrically connects a VCC terminal and a VBK terminal in a connected state, a switch control circuit, and a power supply monitoring circuit that monitors a voltage of the VCC terminal, and outputs a voltage of the VBK terminal. The switch control circuit switches a mode from a normal mode in which the switching circuit is intermittently connected to a standby mode in which the switching circuit is opened according to an output signal of the power supply monitoring circuit.

Power supply switching circuit, real time clock device, electronic apparatus, mobile unit, and method of controlling power supply switching circuit

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 includes first to Nth memory blocks disposed along a first direction, a power supply circuit, and a data driver disposed in a second direction with respect to the first to Nth memory blocks. The power supply circuit includes an analog reference power supply voltage output circuit that outputs an analog reference power supply voltage. The analog reference power supply voltage output circuit is disposed between an Mth memory block and an (M+1)th memory block among the first to Nth memory blocks. An analog reference power supply line is provided in an area of the data driver along the first direction.

Integrated circuit device, electro-optical device, and electronic instrument

A display device includes an integrated circuit device and a display panel. The display panel includes a panel test terminal that is used to test the display panel, and a driver output terminal that is electrically connected with a data driver pad of the integrated circuit device and is electrically connected with the panel test terminal. The integrated circuit device includes a data driver block and a high-speed I/F circuit block including a physical layer circuit. The physical layer circuit is disposed in the integrated circuit device so that the physical layer circuit non-overlaps a predetermined test terminal region, the predetermined test terminal region being a region in which the panel test terminal is predetermined to locate under the integrated circuit device when the integrated circuit device is mounted on the display panel.

Display device, integrated circuit device, and electronic instrument

An integrated circuit device includes a scan driver block, a high-speed interface circuit block, and a scan driver pad arrangement region in which pads electrically connecting scan output lines of the scan driver block and scan lines are disposed. The high-speed interface circuit block includes a physical layer circuit that receives data using differential signals, and a link controller that performs a link layer process. The scan output lines of the scan driver block are provided from the scan driver block to the scan driver pad arrangement region to pass over the link controller while avoiding the physical layer circuit. A common voltage line connecting first and second common voltage pads is provided from the first common voltage pad to the second common voltage pad along a first direction, the common voltage line being provided in a second direction with respect to the physical layer circuit along the first direction in an arrangement region of the physical layer circuit.

Integrated circuit device and electronic instrument

An integrated circuit device includes a data driver block, a memory block, an information storage block in which an address of a defective cell of the memory block is programmed and stored as a defective address, and a switch control circuit which performs control for switching access to the defective cell to access to a redundant cell. A row address of the defective cell having the row address and a column address is stored in the information storage block as the defective address. The switch control circuit performs control for switching access to the defective cell to access to the redundant cell by comparing a row address for display panel access with the defective address during the display panel access and comparing a row address for host access using the row address and a column address with the defective address during the host access.

Growing community of inventors

Suwa, Japan

Hiroshi Kiya