Patents by Inventor Cheng-Fan Wang

Cheng-Fan Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240105664
    Abstract: A package structure includes a first RDL, an adhesive layer and a first electronic component. Upper bumps and conductive pads are provided on a first upper surface and a first lower surface of the first RDL, respectively. The adhesive layer is located on the first upper surface of the first RDL and surrounds the upper bumps. The first electronic component is mounted on the adhesive layer and includes conductors which are visible from an active surface of the first electronic component and joined to the upper bumps, the active surface of the first electronic component faces toward the first upper surface of the first RDL. Two adhesive surfaces of the adhesive layer are adhered to the first upper surface of the first RDL and the active surface of the first electronic component, respectively.
    Type: Application
    Filed: August 16, 2023
    Publication date: March 28, 2024
    Inventors: Yu-Chung Huang, Hsin-Yen Tsai, Fa-Chung Chen, Cheng-Fan Lin, Chen-Yu Wang
  • Publication number: 20230415461
    Abstract: Polymer film and laminated glass manufactured using the polymer film are provided. The polymer film has a first surface and a second surface, wherein the first surface has a peak material volume (Vmp) at a material ratio of 10% ranging from 0.15 ?m3/?m2 to 1.20 ?m3/?m2 and a kurtosis (Sku) ranging from 0.73 to 10.02, wherein the material ratio, peak material volume, and kurtosis are defined in accordance with ISO 25178-2:2012.
    Type: Application
    Filed: February 22, 2023
    Publication date: December 28, 2023
    Inventors: Tzu-Jung HUANG, Yen-Chen HUANG, Cheng-Fan WANG
  • Publication number: 20230182447
    Abstract: The present disclosure relates to a polymer film comprising at least one first layer and at least one second layer, the first layer and the second layer each comprising a polyvinyl acetal resin and a plasticizer; wherein the polymer film has a first loss factor peak value at ?20° C. to 20° C., and a second loss factor peak value at 20° C. to 50° C.; wherein the polymer film has a loss factor valley value between the first loss factor peak value and the second loss factor peak value, the loss factor valley value is 0.15 to 0.45, and the loss factor of the polymer film at 10° C. is less than 0.5. The polymer film can still maintain good sound insulation performance at a specific ambient temperature and/or after a period of time.
    Type: Application
    Filed: June 29, 2022
    Publication date: June 15, 2023
    Inventors: Yen-Chen Huang, Tzu-Jung Huang, Cheng Fan Wang
  • Patent number: 11492436
    Abstract: The present disclosure provides a modified polyvinyl alcohol-based polymer, which comprises a modifying monomer unit represented by Formula wherein, X is a moiety comprising an alkenyl group, and the modified polyvinyl alcohol-based polymer has a saponification degree of 67 mol % to 78 mol % and a modification rate of 0.02 mol % to 1.5 mol %. The modified polyvinyl alcohol-based polymer is suitable to be used as a dispersant for suspension polymerization, to make the obtained polyvinyl chloride-based resin have reduced particle diameter and few coarse particles.
    Type: Grant
    Filed: January 24, 2022
    Date of Patent: November 8, 2022
    Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.
    Inventors: Jyun-Ru Sun, Huan-Ming Chang, Cheng-Fan Wang, Chia-Hao Hsu
  • Patent number: 11426981
    Abstract: A polymer film comprising polyvinyl acetal and a laminated glass manufactured using the same are provided. At least one surface of the polymer film has a void volume (Vv) value at a material ratio of 10% ranging from 3 ?m3/?m2 to 34.3 ?m3/?m2, wherein the void volume (Vv) and material ratio are defined in accordance with ISO 25178-2:2012.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: August 30, 2022
    Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.
    Inventors: Tzu-Jung Huang, Chin-Yen Chang, Cheng-Fan Wang
  • Publication number: 20220251273
    Abstract: The present disclosure provides a modified polyvinyl alcohol-based polymer, which comprises a modifying monomer unit represented by Formula wherein, X is a moiety comprising an alkenyl group, and the modified polyvinyl alcohol-based polymer has a saponification degree of 67 mol % to 78 mol % and a modification rate of 0.02 mol % to 1.5 mol %. The modified polyvinyl alcohol-based polymer is suitable to be used as a dispersant for suspension polymerization, to make the obtained polyvinyl chloride-based resin have reduced particle diameter and few coarse particles.
    Type: Application
    Filed: January 24, 2022
    Publication date: August 11, 2022
    Inventors: Jyun-Ru SUN, Huan-Ming CHANG, Cheng-Fan WANG, Chia-Hao HSU
  • Patent number: 11198770
    Abstract: The present disclosure relates to an interlayer film for laminated glass comprising: (a) polyvinyl butyral (PVB) resin having an average molecular weight (Mw) as measured by Gel Permeation Chromatography (GPC) from about 175,000 to about 210,000 Dalton; and (b) about 30 to about 50 parts per hundred (pph) of a plasticizer. The interlayer film interposed between two glass sheets forms laminated glass having a pummel adhesion value that is greater in an outer area of the laminated glass than in a middle area of the laminated glass after the laminated glass has been maintained at 50° C. and 95% relative humidity (RH) for 28 days. The laminated glass exhibits improved durability and does not delaminate over time, even in the presence of high temperature and humidity conditions.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: December 14, 2021
    Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.
    Inventors: Chin-Yen Chang, Cheng-Fan Wang
  • Patent number: 11136441
    Abstract: A polymer film comprising polyvinyl acetal and a laminated glass manufactured using the same are provided. At least one surface of the polymer film has a void volume (Vv) value at a material ratio of 10% ranging from 2 ?m3/?m2 to 18 ?m3/?m2, wherein the void volume (Vv) and material ratio are defined in accordance with ISO 25178-2:2012.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: October 5, 2021
    Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.
    Inventors: Tzu-Jung Huang, Chin-Yen Chang, Cheng-Fan Wang
  • Patent number: 11065846
    Abstract: A polymer film comprising polyvinyl acetal and a laminated glass manufactured using the same are provided. The polymer film has a 45-100° C. dimensional variability ranging from 20 ?m to 50 ?m, and at least one surface of the polymer film has a surface roughness Rz ranging from 30 ?m to 55 ?m.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: July 20, 2021
    Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.
    Inventors: Chin-Yen Chang, Cheng-Fan Wang
  • Publication number: 20210162717
    Abstract: A polymer film comprising polyvinyl acetal and a laminated glass manufactured using the same are provided. The polymer film has a 45-100° C. dimensional variability ranging from 20 ?m to 50 ?m, and at least one surface of the polymer film has a surface roughness Rz ranging from 30 ?m to 55 ?m.
    Type: Application
    Filed: February 12, 2020
    Publication date: June 3, 2021
    Inventors: Chin-Yen CHANG, Cheng-Fan WANG
  • Publication number: 20210162718
    Abstract: A polymer film comprising polyvinylacetal and a laminated glass manufactured using the same are provided. At least one surface of the polymer film has a void volume (Vv) value at a material ratio of 10% ranging from 3 ?m3/?m2 to 34.3 ?m3/?m2, wherein the void volume (Vv) and material ratio are defined in accordance with ISO 25178-2:2012.
    Type: Application
    Filed: February 12, 2020
    Publication date: June 3, 2021
    Inventors: Tzu-Jung HUANG, Chin-Yen CHANG, Cheng-Fan WANG
  • Publication number: 20210163697
    Abstract: A polymer film comprising polyvinyl acetal and a laminated glass manufactured using the same are provided. At least one surface of the polymer film has a void volume (Vv) value at a material ratio of 10% ranging from 2 ?m3/?m2 to 18 ?m3/?m2, wherein the void volume (Vv) and material ratio are defined in accordance with ISO 25178-2:2012.
    Type: Application
    Filed: February 12, 2020
    Publication date: June 3, 2021
    Inventors: Tzu-Jung HUANG, Chin-Yen CHANG, Cheng-Fan WANG
  • Publication number: 20210095081
    Abstract: A polymeric film comprising a polyvinyl acetal resin a plasticizer and a blending agent containing an aliphatic ring and at least one hydroxyl group are disclosed. A laminate is also described where the polymeric film is used as the interlayer between two transparent materials such as glass. The laminate made using the polymeric film has excellent optical and impact resistance properties.
    Type: Application
    Filed: September 26, 2019
    Publication date: April 1, 2021
    Inventors: Cheng-Fan WANG, Chin-Yen CHANG
  • Publication number: 20200354534
    Abstract: The present disclosure relates to an interlayer film for laminated glass comprising: (a) polyvinyl butyral (PVB) resin having an average molecular weight (Mw) as measured by Gel Permeation Chromatography (GPC) from about 175,000 to about 210,000 Dalton; and (b) about 30 to about 50 parts per hundred (pph) of a plasticizer. The interlayer film interposed between two glass sheets forms laminated glass having a pummel adhesion value that is greater in an outer area of the laminated glass than in a middle area of the laminated glass after the laminated glass has been maintained at 50° C. and 95% relative humidity (RH) for 28 days. The laminated glass exhibits improved durability and does not delaminate over time, even in the presence of high temperature and humidity conditions.
    Type: Application
    Filed: March 19, 2020
    Publication date: November 12, 2020
    Inventors: Chin-Yen CHANG, Cheng-Fan WANG
  • Patent number: 10676578
    Abstract: The present disclosure relates to an interlayer film for laminated glass comprising: (a) polyvinyl butyral (PVB) resin having an average molecular weight (Mw) as measured by Gel Permeation Chromatography (GPC) from about 175,000 to about 210,000 Dalton; and (b) about 30 to about 50 parts per hundred (pph) of a plasticizer. The interlayer film interposed between two glass sheets forms laminated glass having a pummel adhesion value that is greater in an outer area of the laminated glass than in a middle area of the laminated glass after the laminated glass has been maintained at 50° C. and 95% relative humidity (RH) for 28 days. The laminated glass exhibits improved durability and does not delaminate over time, even in the presence of high temperature and humidity conditions.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: June 9, 2020
    Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.
    Inventors: Chin-Yen Chang, Cheng-Fan Wang
  • Patent number: 10438575
    Abstract: The present invention relates to a multilayer film. In various embodiments the multilayer film is an interlayer film for laminated glass. The present invention also relates to an interlayer film for laminated glass, wherein the laminated glass has excellent sound insulating properties. The present invention also relates to a laminated glass that is obtained using this interlayer film. The present invention can effectively improve the compatibility of the resin film (B) with the plasticizer so that the intermediate layer (i.e., the resin film (B)) allows to add more plasticizer(s) to achieve the effect of enhancing sound-insulating. Furthermore, the intermediate layer of the multilayer film uses different plasticizer from the non-intermediate layer of the multilayer film so as to prevent the migration of plasticizers between different layers and the multilayer film has little or no plasticizer bleed-out.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: October 8, 2019
    Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.
    Inventors: Cheng-Fan Wang, Chin-Yen Chang
  • Publication number: 20190156811
    Abstract: The present invention relates to a multilayer film. In various embodiments the multilayer film is an interlayer film for laminated glass. The present invention also relates to an interlayer film for laminated glass, wherein the laminated glass has excellent sound insulating properties. The present invention also relates to a laminated glass that is obtained using this interlayer film. The present invention can effectively improve the compatibility of the resin film (B) with the plasticizer so that the intermediate layer (i.e., the resin film (B)) allows to add more plasticizer(s) to achieve the effect of enhancing sound-insulating. Furthermore, the intermediate layer of the multilayer film uses different plasticizer from the non-intermediate layer of the multilayer film so as to prevent the migration of plasticizers between different layers and the multilayer film has little or no plasticizer bleed-out.
    Type: Application
    Filed: October 31, 2018
    Publication date: May 23, 2019
    Applicant: CHANG CHUN PETROCHEMICAL CO., LTD.
    Inventors: Cheng-Fan WANG, Chin-Yen CHANG
  • Publication number: 20050033954
    Abstract: A computer system with multiple Basic Input/Output System (BIOS) memory blocks has an internal memory block and an external memory block for the use of single or dual BIOS. When the external memory block is damaged or incorrect, the computer system automatically copies the content of the internal memory block to the external memory block. The booting information stored in the internal memory block is not alterable by a user so that the internal memory block booting information will continuingly serve the purpose of duplicating itself to the damaged external memory block for providing an unlimited number of salvages to the external memory block serving as the primary source for computer booting.
    Type: Application
    Filed: August 2, 2004
    Publication date: February 10, 2005
    Inventors: Cheng-Fan Wang, Cheng-Ju Tsai, Chun-Ta Chen
  • Publication number: 20030210064
    Abstract: A testing apparatus for BGA IC comprises a test circuit board, a socket; and a plurality of detachable fixing units to detachably assemble the socket on the test circuit board. The socket comprises a socket body, a lid pivotally arranged on one end of the socket body to fix an IC on the socket body, and a plurality of conductive pins arranged in socket body to provide electric connection between the test circuit board and the IC. The lid has an upper locking unit locked to a lower locking unit of the socket body such that the IC can be firmly fixed on the socket body and leads contact balls of the IC are tightly connected to the corresponding conductive pins.
    Type: Application
    Filed: April 10, 2003
    Publication date: November 13, 2003
    Inventors: Yao-kui Huang, Cheng Fan Wang
  • Patent number: 6295727
    Abstract: A device and method for manufacturing an integrated real time clock integrated circuit (RTC IC) package is disclosed, in which the RTC IC and its related components are integrated into a single package. Therefore, the layout area required by the integrated RTC IC package is significantly reduced. Also, only a single manual assembling process is required. Furthermore, various examination steps are built into every process to manufacture the integrated RTC IC package to make sure the completed products are in normal condition. No extra examination and fix-up processes are required for the completed products so that manufacturing cost can be significantly reduced.
    Type: Grant
    Filed: January 8, 1999
    Date of Patent: October 2, 2001
    Assignee: Via Technologies, Inc.
    Inventors: Yao-Kui Huang, Cheng-Fan Wang