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A crystal oscillator and an oscillating device are provided. The crystal oscillator includes a resonator, a low-thermal conductivity glue, an integrated circuit chip, and a heating element. In the resonator, a crystal blank is hermetically encapsulated. The low-thermal conductivity glue wraps the resonator to suppress temperature variation in the resonator. The integrated circuit chip is disposed below the resonator, and the heating element is configured to supply heat to the resonator.

Titel:	Crystal oscillator and oscillating device
Autor/in / Beteiligte Person:	Corporation, TXC
Link:	View record in USPTO Patent Grants (Volltext)
Veröffentlichung:	2024
Medientyp:	Patent
Sonstiges:	Nachgewiesen in: USPTO Patent Grants Sprachen: English Patent Number: 11949,378 Publication Date: April 02, 2024 Appl. No: 17/897223 Application Filed: August 29, 2022 Assignees: TXC Corporation (Taipel, TW) Claim: 1. A crystal oscillator, comprising: a resonator comprising a housing portion and a lid portion on the housing portion, wherein a crystal blank is hermetically encapsulated in a housing space formed by the housing portion and the lid portion; a low-thermal conductivity glue wrapping the resonator to suppress temperature variation in the resonator; an integrated circuit chip disposed below the resonator; and a heating element configured to supply heat to the resonator and positioned on a surface of the housing portion opposite to the housing space outside the low-thermal conductivity glue. Claim: 2. The crystal oscillator of claim 1 , further comprising a carrier for mounting the integrated circuit chip. Claim: 3. The crystal oscillator of claim 2 , wherein the heating element is disposed on a surface of the carrier toward the resonator. Claim: 4. The crystal oscillator of claim 1 , wherein the integrated circuit chip is configured to control the heating element. Claim: 5. The crystal oscillator of claim 1 , further comprising a temperature sensor formed on the integrated circuit chip to detect a temperature of the resonator. Claim: 6. An oscillating device, comprising: a substrate; a cover disposed on the substrate; and the crystal oscillator of claim 1 disposed in an inner space formed by the substrate and the cover. Claim: 7. The oscillating device of claim 6 , wherein the cover comprises a metal cover. Claim: 8. The oscillating device of claim 6 , wherein the substrate comprises a printed circuit board (PCB). Patent References Cited: 6208213 March 2001 Anastasyev ; 6362700 March 2002 Fry ; 6621361 September 2003 Fry ; 20030197568 October 2003 Satoh ; 20060132251 June 2006 Satoh ; 20060139115 June 2006 Mizumura ; 20080055011 March 2008 Kasahara ; 20090256641 October 2009 Lee ; 20100085125 April 2010 Ito ; 20150180481 June 2015 Isohata ; 20200076438 March 2020 Hsieh et al. ; 20220037579 February 2022 Matsukawa ; 20220038055 February 2022 Matsukawa ; 107911095 April 2018 ; 2011199335 October 2011 Primary Examiner: Gannon, Levi Attorney, Agent or Firm: JCIPRNET

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Crystal oscillator and oscillating device