Patents Assigned to China Wafer Level CSP Co., Ltd.
  • Patent number: 11049899
    Abstract: A structure and a method for packaging an image sensor chip. The structure includes: an image sensor chip and a substrate. The image sensor chip includes a first surface and a second surface that are opposite to each other, and the first surface is provided with multiple pixels configured to collect image information and multiple first bonding pads connected with the multiple pixels. The substrate covers the first surface of the image sensor chip, and is provided with wiring and a contact terminal connected with the wiring. A periphery of the image sensor chip is bonded to the substrate via an anisotropic conductive adhesive, the multiple first bonding pads are electrically connected with the contact terminal via the anisotropic conductive adhesive, and the anisotropic conductive adhesive surrounds all the multiple pixels and is not overlapped with the multiple pixels in a direction perpendicular to the substrate.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: June 29, 2021
    Assignee: China Wafer Level CSP Co., Ltd.
    Inventors: Zhiqi Wang, Zhiming Geng
  • Patent number: 10817700
    Abstract: An optical fingerprint recognition chip package and a packaging method are provided. In the optical fingerprint recognition chip package, a cover plate is arranged on a front surface of an optical fingerprint recognition chip, the cover plate includes a substrate and a light shielding layer. The light shielding layer is arranged on a surface of the substrate facing away from the optical fingerprint recognition chip. The substrate is provided with multiple first through holes for exposing photosensitive pixels of the optical fingerprint recognition chip. The light shielding layer is provided with multiple second through holes in one-to-one correspondence with the first through holes. During fingerprint recognition, light reflected by a finger is split through the first through holes and the second through holes, such that crosstalk among different photosensitive pixels is reduced, and the accuracy of fingerprint recognition is improved.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: October 27, 2020
    Assignee: China Wafer Level CSP Co., Ltd.
    Inventors: Zhiqi Wang, Guoliang Xie, Hanqing Hu
  • Publication number: 20200303448
    Abstract: A structure and a method for packaging an image sensor chip. The structure includes: an image sensor chip and a substrate. The image sensor chip includes a first surface and a second surface that are opposite to each other, and the first surface is provided with multiple pixels configured to collect image information and multiple first bonding pads connected with the multiple pixels. The substrate covers the first surface of the image sensor chip, and is provided with wiring and a contact terminal connected with the wiring. A periphery of the image sensor chip is bonded to the substrate via an anisotropic conductive adhesive, the multiple first bonding pads are electrically connected with the contact terminal via the anisotropic conductive adhesive, and the anisotropic conductive adhesive surrounds all the multiple pixels and is not overlapped with the multiple pixels in a direction perpendicular to the substrate.
    Type: Application
    Filed: July 6, 2018
    Publication date: September 24, 2020
    Applicant: China Wafer Level CSP Co., Ltd.
    Inventors: Zhiqi Wang, Zhiming Geng
  • Patent number: 10763293
    Abstract: An image sensing chip package and an image sensing chip packaging method are provided. In the image sensing chip package, an image sensing chip is located in a through hole of a substrate, and a front surface of the image sensing chip is flush with a first surface of the substrate. In this way, in the image sensing chip package, a height of the image sensing chip is controlled with the first surface of the substrate as a reference. Since the first surface of the substrate does not change in the packaging process, almost no uncontrollable factor affects the height of the image sensing chip.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: September 1, 2020
    Assignee: China Wafer Level CSP Co., Ltd.
    Inventor: Zhiqi Wang
  • Publication number: 20200243588
    Abstract: A package and a packaging method are provided. The package includes a chip unit, a protective cover plate, and an adhesive unit. The chip unit has a first surface, where the first surface includes a device region. The protective cover plate has a second surface opposite to the first surface of the chip unit. The adhesive unit is located between the first surface of the chip unit and the second surface of the protective cover plate and is configured to bond the chip unit with the protective cover plate. The adhesive unit includes a first region and a second region having different viscosities.
    Type: Application
    Filed: May 25, 2017
    Publication date: July 30, 2020
    Applicant: China Wafer Level CSP Co., Ltd.
    Inventors: Zhiqi Wang, Zhuowei Wang, Lijun Chen
  • Publication number: 20200234028
    Abstract: An optical fingerprint recognition chip package and a packaging method are provided. In the optical fingerprint recognition chip package, a cover plate is arranged on a front surface of an optical fingerprint recognition chip, the cover plate includes a substrate and a light shielding layer. The light shielding layer is arranged on a surface of the substrate facing away from the optical fingerprint recognition chip. The substrate is provided with multiple first through holes for exposing photosensitive pixels of the optical fingerprint recognition chip. The light shielding layer is provided with multiple second through holes in one-to-one correspondence with the first through holes. During fingerprint recognition, light reflected by a finger is split through the first through holes and the second through holes, such that crosstalk among different photosensitive pixels is reduced, and the accuracy of fingerprint recognition is improved.
    Type: Application
    Filed: December 5, 2018
    Publication date: July 23, 2020
    Applicant: China Wafer Level CSP Co., Ltd.
    Inventors: Zhiqi Wang, Guoliang Xie, Hanqing Hu
  • Patent number: 10685917
    Abstract: A semiconductor device and a manufacture method of the semiconductor device are provided. In the semiconductor device, a back surface of a substrate is covered with a first insulating layer, where the first insulating layer covers the bottom and the sidewall of a through hole and the back surface of the substrate outside the through hole. The first insulating layer outside the through hole is covered with a second insulating layer. When etching the first insulating layer at the bottom of the through hole, although an etching speed for a region outside the through hole is greater than an etching speed for the bottom of the through hole, the first insulating layer outside the through hole is protected from being over-etched by the second insulating layer, which improves reliability of the device.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: June 16, 2020
    Assignee: China Wafer Level CSP Co., Ltd.
    Inventor: Zhiqi Wang
  • Patent number: 10680033
    Abstract: A chip packaging method and a chip package are provided. According to the chip packaging method and the chip package, to-be-packaged chips are located in a plastic packaging layer, and front surfaces of the to-be-packaged chips are flush with a first surface of the plastic packaging layer, and the plastic packaging material for manufacturing the plastic packaging layer has good plasticity before a curing process, so that the formed first surface and the second surface have good smoothness, thereby ensuring the reliability of the package.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: June 9, 2020
    Assignee: China Wafer Level CSP Co., Ltd.
    Inventor: Zhiqi Wang
  • Publication number: 20200051938
    Abstract: A fingerprint chip packaging method and a fingerprint chip package are provided. During a process of packaging a fingerprint chip, the fingerprint chip is directly packaged and protected by a mold compound layer to form a thin package. With the fingerprint chip packaging method and the fingerprint chip package, the thickness of the package is greatly reduced, which facilitates miniaturization of the electronic device. Further, since the mold compound layer formed after curing of a mold compound material has a great mechanical strength, the mold compound layer can serve as a carrier substrate for mounting other electronic components of the electronic device, such that the integration of the electronic device is greatly improved, the space of the circuit board is saved, thereby facilitating the miniaturization of the electronic device.
    Type: Application
    Filed: December 4, 2018
    Publication date: February 13, 2020
    Applicant: China Wafer Level CSP Co., Ltd.
    Inventor: Zhiqi Wang
  • Patent number: 10541186
    Abstract: A chip package and a chip packaging method are provided. The package includes: a chip to be packaged, a reinforcing layer and solder bumps. The chip to be packaged includes a first surface and a second surface opposite to each other, the first surface includes a sensing region and first contact pads, and the first contact pads are electrically coupled to the sensing region. The reinforcing layer covers the first surface of the chip to be packaged. The solder bumps are provided on the second surface of the chip to be packaged. The solder bump is electrically connected to the first contact pad and is configured to electrically connect with an external circuit.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: January 21, 2020
    Assignee: China Wafer Level CSP Co., Ltd.
    Inventors: Zhiqi Wang, Guoliang Xie, Hanqing Hu
  • Patent number: 10541262
    Abstract: A package for an image sensing chip is provided, which includes: an image sensing chip comprising a first surface and a second surface opposite to each other, where the first surface is provided with an image sensing region and a contact pad; a through hole extending from the second surface to the contact pad; an electrical connection layer provided along an inner wall of the through hole and extending onto the second surface; a solder mask filling the through hole and covering the electrical connection layer, wherein an opening is formed in the solder mask, and the electrical connection layer is exposed at a bottom of the opening; a guide contact pad covering an inner wall and the bottom of the opening and extending onto the solder mask; and a solder bump located on the guide contact pad.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: January 21, 2020
    Assignee: China Wafer Level CSP Co., Ltd.
    Inventors: Zhiqi Wang, Zhuowei Wang, Guoliang Xie
  • Patent number: 10541264
    Abstract: A package-on-package structure of an image sensing chip is provided, which includes: an image sensing chip package, a control chip package and a circuit board. The image sensing chip package and the control chip package are arranged on the same surface of the control chip package in parallel. The image sensing chip package includes a first substrate and an image sensing chip. The control chip package includes a second substrate and a control chip. A second surface of the first substrate is electrically connected to a first region of a first surface of the second substrate, and the circuit board is electrically connected to a second region of the first surface of the second substrate. A package-on-package method for a package-on-package structure is further provided.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: January 21, 2020
    Assignee: China Wafer Level CSP Co., Ltd.
    Inventor: Zhiqi Wang
  • Patent number: 10529758
    Abstract: A method for forming an image sensor package and an image sensor package are provided. The method includes: providing a first substrate and a second substrate which includes a first surface and a second surface opposite to the first surface, and attaching either surface of the first substrate with the first surface of the second substrate with an adhesive layer; forming a groove at the second surface of the second substrate; providing a base which includes a first surface and a second surface opposite to the first surface, where the first surface of the base is provided with a sensing region and multiple contact pads; and attaching the second surface of the second substrate with the first surface of the base, where a cavity is formed between the groove and the base, and the sensing region is located within the cavity.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: January 7, 2020
    Assignee: China Wafer Level CSP Co., Ltd.
    Inventors: Zhiqi Wang, Qiong Yu, Wei Wang
  • Patent number: 10497728
    Abstract: A fingerprint sensing chip packaging method and package are provided. The method includes: providing a cover plate, providing a fingerprint sensing chip, where a fingerprint sensing region and contact pads at periphery of the region are arranged on a front surface of the chip, electrically connecting the contact pads to a back surface of the chip, forming a first conductive structure electrically connected to the contact pads on the back surface of the chip, laminating the front surface of the chip with a back surface of the cover plate, providing a flexible printed circuit, where a second conductive structure is arranged on a back surface of the circuit and an opening is arranged in the circuit, laminating a front surface of the circuit with the back surface of the cover plate, and electrically connecting the first conductive structure to the second conductive structure.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: December 3, 2019
    Assignee: China Wafer Level CSP Co., Ltd.
    Inventors: Zhiqi Wang, Yuanfei Liu, Hongjun Liu
  • Patent number: 10490583
    Abstract: A packaging structure and a packaging method are provided. The packaging structure includes: a chip unit, where a first surface of the chip unit includes a sensing region; and an upper cover plate structure, where a first surface of the upper cover plate structure is provided with a groove structure, the first surface of the chip unit is attached with the first surface of the upper cover plate structure, the sensing region is located within a cavity surrounded by the groove structure and the first surface of the chip unit, the upper cover plate structure further includes a second surface opposite to the first surface, and an area of the second surface of the upper cover plate structure is less than an area of the first surface of the upper cover plate structure.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: November 26, 2019
    Assignee: China Wafer Level CSP Co., Ltd.
    Inventors: Zhiqi Wang, Fangyuan Hong
  • Publication number: 20190296064
    Abstract: Provided are a packaging method and packaging structure for a semiconductor chip. The packaging method comprises: providing a wafer, the wafer being provided with multiple semiconductor chips, each semiconductor chip being provided with a functional area and solder pads arranged on a first surface; providing a protective substrate, multiple support units being provided on the protective substrate, openings being formed on the support units; aligning the solder pads to the openings and facing support units provided on the protective substrate to the first surface of the wafer, and pressing together the wafer and the protective substrate. The packaging method effectively prevents the support units from generating stress that acts on the solder pads in a subsequent reliability test, thus preventing cases of the solder pad being damaged or split into layers.
    Type: Application
    Filed: May 18, 2017
    Publication date: September 26, 2019
    Applicant: China Wafer Level CSP Co., Ltd.
    Inventors: Zhiqi Wang, Guoliang Xie, Hanqing Hu, Wenbin Wang
  • Patent number: 10418296
    Abstract: A semiconductor chip package and a semiconductor chip packaging method are provided. The package includes: a semiconductor chip having a functional region, a protective substrate located on one side of the semiconductor chip and covering the functional region, and a support unit located between the protective substrate and the semiconductor chip and enclosing the functional region. The support unit includes an outer support member and an inner support member located inside the outer support member. A receiving cavity is formed between the inner support member, the semiconductor chip and the protective substrate. A hollow cavity is formed between the inner support member, the outer support member, the semiconductor chip and the protective substrate. The inner support member is provided with at least one first ventilating structure, through which the receiving cavity is in communication with the hollow cavity.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: September 17, 2019
    Assignee: China Wafer Level CSP Co., Ltd.
    Inventors: Zhiqi Wang, Xianglong Liu, Yuanhao Xu
  • Publication number: 20190259634
    Abstract: A packaging structure and a packaging method are provided. The packaging structure includes a substrate, a circuit wiring layer arranged on the substrate, a conductive bump arranged on the circuit wiring layer, and a semiconductor chip flip-chip mounted over the substrate. A functional area and a pad surrounding the functional area are arranged on a first surface of the semiconductor chip facing the substrate, and the pad is electrically connected to the conductive bump. The packaging structure further includes a sealing layer arranged on the substrate and surrounding the semiconductor chip, and a blocking structure arranged on the substrate. The blocking structure surrounds the functional area to block a material of the sealing layer from overflowing into the functional area.
    Type: Application
    Filed: June 28, 2017
    Publication date: August 22, 2019
    Applicant: China Wafer level CSP Co., Ltd.
    Inventors: Zhiqi Wang, Zhijie Shen, Zhiming Geng, Jian Zhang
  • Publication number: 20190206801
    Abstract: A semiconductor device and a manufacture method of the semiconductor device are provided. In the semiconductor device, a back surface of a substrate is covered with a first insulating layer, where the first insulating layer covers the bottom and the sidewall of a through hole and the back surface of the substrate outside the through hole. The first insulating layer outside the through hole is covered with a second insulating layer. When etching the first insulating layer at the bottom of the through hole, although an etching speed for a region outside the through hole is greater than an etching speed for the bottom of the through hole, the first insulating layer outside the through hole is protected from being over-etched by the second insulating layer, which improves reliability of the device.
    Type: Application
    Filed: December 4, 2018
    Publication date: July 4, 2019
    Applicant: China Wafer Level CSP Co., Ltd
    Inventor: Zhiqi Wang
  • Publication number: 20190202685
    Abstract: A chip package and a chip packaging method are provided. A MEMS chip and an ASIC chip are packaged by using a packaged circuit board. The packaged circuit board is provided with a receiving hole. The MEMS chip and the ASIC chip are respectively attached to two surfaces of the packaged circuit board and cover receiving hole. The MEMS chip and the ASIC chip are connected with each other via the packaged circuit board, and are connected to an external circuit via the packaged circuit board, thereby facilitating a circuit interconnection between the package and an electronic component.
    Type: Application
    Filed: December 5, 2018
    Publication date: July 4, 2019
    Applicant: China Wafer Level CSP Co., Ltd.
    Inventor: Zhiqi Wang