公开(公告)号：US20240322757A1

公开(公告)日：2024-09-26

申请号：US18613421

申请日：2024-03-22

Applicant: SEIKO EPSON CORPORATION

Inventor： Yosuke ITASAKA ,  Kohei BEPPU ,  Naoki II

IPC: H03B5/36

CPC classification number: H03B5/36

Abstract: A circuit device is configured to switching between a first mode in which phase noise of an output clock signal is lower than that in a second mode and the second mode in which power consumption is smaller than that in the first mode, and the circuit device includes an oscillation circuit configured to generate an oscillation signal, a waveform shaping circuit configured to perform waveform shaping on the oscillation signal to obtain a rectangular wave clock signal; and an output circuit configured to output the output clock signal based on the clock signal. A driving capability of the waveform shaping circuit in the first mode is higher than a driving capability of the waveform shaping circuit in the second mode.

公开(公告)号：US20230155551A1

公开(公告)日：2023-05-18

申请号：US17986931

申请日：2022-11-15

Applicant: SEIKO EPSON CORPORATION

Inventor： Yosuke ITASAKA

IPC: H03B5/36 ,  H03B5/04

CPC classification number: H03B5/364 ,  H03B5/04 ,  H03B2200/004 ,  H03B2201/0266

Abstract: A circuit device includes an oscillation circuit. The oscillation circuit includes a first variable capacitance circuit whose capacitance change characteristic with respect to a capacitance control voltage is a positive characteristic and a second variable capacitance circuit whose capacitance change characteristic with respect to the capacitance control voltage is a negative characteristic, and oscillates a resonator. The circuit device further includes a switch circuit. The switch circuit receives a first input voltage at a first input terminal thereof, receives a second input voltage at a second input terminal thereof, outputs a first output voltage selected from a plurality of voltages including the first input voltage and the second input voltage to a first output terminal thereof to which the first variable capacitance circuit is electrically coupled, and outputs a second output voltage selected from the plurality of voltages to a second output terminal thereof to which the second variable capacitance circuit is electrically coupled.

公开(公告)号：US20220310504A1

公开(公告)日：2022-09-29

申请号：US17705668

申请日：2022-03-28

Applicant: Seiko Epson Corporation

Inventor： Naoki II ,  Yosuke ITASAKA

IPC: H01L23/50 ,  H03H3/02 ,  H03H9/05 ,  H03H9/10 ,  H03H9/17 ,  H03B5/36

Abstract: The integrated circuit device includes: a pad that has a shape having a longitudinal direction and a lateral direction; a circuit that overlaps the pad in a plan view, and that is electrically coupled to the pad; a lead-out wiring that is led out from an outer edge on a longitudinal side of the pad along the lateral direction of the pad; and a via group that electrically couples the lead-out wiring and a wiring of the circuit and that does not overlap the pad in the plan view.

公开(公告)号：US20220239275A1

公开(公告)日：2022-07-28

申请号：US17584436

申请日：2022-01-26

Applicant: Seiko Epson Corporation

Inventor： Yosuke ITASAKA

IPC: H03H9/05 ,  H03H9/10 ,  H03H9/19 ,  H03B5/32 ,  H03B5/04

Abstract: A vibrator device includes a semiconductor substrate, a base, a vibrating element, and a lid. The semiconductor substrate has a first surface and a second surface which is in a front-back relationship with the first surface. The base includes an integrated circuit disposed on a first surface or a second surface. The vibrating element is electrically coupled to the integrated circuit and is disposed on the first surface side. The lid is joined to the base at a joining portion of the base to accommodate the vibrating element. The integrated circuit includes a passive element, and the passive element is disposed such that at least a part of the passive element overlaps with the joining portion in a plan view from a direction orthogonal to the first surface.

公开(公告)号：US20210006251A1

公开(公告)日：2021-01-07

申请号：US16918083

申请日：2020-07-01

Applicant: Seiko Epson Corporation

Inventor： Yosuke ITASAKA ,  Naoki II ,  Takashi NOMIYA

IPC: H03L1/04 ,  H05K1/02 ,  H03B5/04

Abstract: An integrated circuit device includes a temperature sensor, a heat generation source circuit serving as a heat generation source, a pad for external coupling, and a capacitor having the MIM structure in which one electrode is electrically coupled to the pad for external coupling. In a plan view orthogonal to the substrate on which a circuit element is formed, the capacitor having the MIM structure and the temperature sensor overlap.

公开(公告)号：US20200304067A1

公开(公告)日：2020-09-24

申请号：US16824190

申请日：2020-03-19

Applicant: SEIKO EPSON CORPORATION

Inventor： Yosuke ITASAKA

IPC: H03B5/06 ,  H03B5/20 ,  H03B5/36

Abstract: Provided is a circuit device including: an oscillation circuit oscillating a vibrator, in which the oscillation circuit includes a variable capacitance circuit having a first variable capacitance element and a second variable capacitance element constituted by a first transistor and a second transistor, and a reference voltage supply circuit. The first reference voltage is supplied to a first gate of the first transistor and a capacitance control voltage is supplied to a first impurity region of the first transistor, the second reference voltage is supplied to a second gate of the second transistor and the capacitance control voltage is supplied to a second impurity region of the second transistor, and the capacitance control voltage is supplied to a first common impurity region of the first transistor and the second transistor.

公开(公告)号：US20200304066A1

公开(公告)日：2020-09-24

申请号：US16824088

申请日：2020-03-19

Applicant: SEIKO EPSON CORPORATION

Inventor： Yosuke ITASAKA

IPC: H03B5/06 ,  H03B5/36 ,  H03B5/20

Abstract: Provided is a circuit device including: a first terminal electrically coupled to one end of a vibrator; a second terminal electrically coupled to the other end of the vibrator; a first coupling wiring electrically coupled to the first terminal; a second coupling wiring electrically coupled to the second terminal; an oscillation circuit having a drive circuit for driving the vibrator via the first coupling wiring and the second coupling wiring, and oscillating the vibrator; and a first capacitor having a metal-insulator-metal (MIM) structure of which one electrode is electrically coupled to the first coupling wiring. The first coupling wiring and the first capacitor having the MIM structure overlap each other in plan view in a direction orthogonal to a substrate on which a circuit element is formed.

公开(公告)号：US20150123740A1

公开(公告)日：2015-05-07

申请号：US14534656

申请日：2014-11-06

Applicant: SEIKO EPSON CORPORATION

Inventor： Yosuke ITASAKA ,  Masayuki ISHIKAWA ,  Takehiro YAMAMOTO

IPC: H01L23/552 ,  H03B5/32

CPC classification number: H03B5/32 ,  H01L23/528 ,  H01L24/06 ,  H01L24/16 ,  H01L2224/0401 ,  H01L2224/06135 ,  H01L2224/06164 ,  H01L2224/16225 ,  H01L2924/1434 ,  H01L2924/1461 ,  H01L2924/15153 ,  H01L2924/1517 ,  H01L2924/15313 ,  H01L2924/15323 ,  H01L2924/16195 ,  H03H9/02102 ,  H03H9/0552 ,  H03H9/1071

Abstract: A semiconductor circuit device includes: a semiconductor substrate; and a first circuit block including an analog circuit as a component, a second circuit block including a digital circuit as a component, a connection pad, and a connection wire electrically connecting the connection pad with the first circuit block, all of which are arranged on the semiconductor substrate. The connection wire is provided so as not to overlap the second circuit block in a plan view.

Abstract translation: 半导体电路器件包括：半导体衬底; 以及包括作为组件的模拟电路的第一电路块，包括作为组件的数字电路的第二电路块，连接焊盘和将连接焊盘与第一电路块电连接的连接线，所有这些布置在 半导体衬底。 连接线设置成在平面图中不与第二电路块重叠。

公开(公告)号：US20150116048A1

公开(公告)日：2015-04-30

申请号：US14525568

申请日：2014-10-28

Applicant: Seiko Epson Corporation

Inventor： Takehiro YAMAMOTO ,  Masayuki ISHIKAWA ,  Yosuke ITASAKA

IPC: H03B28/00

CPC classification number: H03B5/366 ,  H03B5/362 ,  H03B2200/0008 ,  H03B2200/0012 ,  H03B2200/0034 ,  H03B2200/004 ,  H03B2200/0062

Abstract: An oscillation circuit includes: an oscillation unit which includes a first terminal and a second terminal connected to a vibrator; a third terminal to which a ground potential is supplied; a fourth terminal which is electrically connected to the second terminal, and to which at least one of an AC voltage for driving the vibrator and a voltage for operating the oscillation unit is applied; and a first switching unit which switches modes of electrical connection between the first terminal and the third terminal.

Abstract translation: 振荡电路包括：振荡单元，其包括连接到振动器的第一端子和第二端子; 提供接地电位的第三端子; 电连接到第二端子的第四端子，并且施加用于驱动振动器的AC电压和用于操作振荡单元的电压中的至少一个; 以及第一切换单元，其切换第一终端和第三终端之间的电连接模式。

公开(公告)号：US20140091865A1

公开(公告)日：2014-04-03

申请号：US14034934

申请日：2013-09-24

Applicant: Seiko Epson Corporation

Inventor： Masayuki ISHIKAWA ,  Takehiro YAMAMOTO ,  Yosuke ITASAKA

IPC: H03L7/16

CPC classification number: H03L7/16 ,  H03B1/00 ,  H03B5/36 ,  H03B5/364 ,  H03L1/023

Abstract: An oscillation circuit is connected to a resonator element (crystal resonator) and oscillates a resonator element to output an oscillation signal. The oscillation circuit includes an amplification element (inverter), and a set of variable capacitive elements having at least two variable capacitive elements, which are connected to an oscillation loop from an output to an input of the amplification element and the capacitance values thereof are controlled with potential differences between reference voltages and a variable control voltage. In each variable capacitive element of a set of variable capacitive elements, the common control voltage is applied to one terminal, and the reference voltage which differs between the variable capacitive elements is input to the other terminal.

Abstract translation: 振荡电路连接到谐振器元件（晶体谐振器），并振荡谐振元件以输出振荡信号。 振荡电路包括放大元件（反相器），并且具有至少两个可变电容元件的可变电容元件组被连接到从放大元件的输出到输入端的振荡回路及其电容值 具有参考电压和可变控制电压之间的潜在差异。 在一组可变电容元件的每个可变电容元件中，公共控制电压被施加到一个端子，并且在可变电容元件之间不同的参考电压被输入到另一个端子。