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).
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Publication number: 20240105664Abstract: 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: ApplicationFiled: August 16, 2023Publication date: March 28, 2024Inventors: Yu-Chung Huang, Hsin-Yen Tsai, Fa-Chung Chen, Cheng-Fan Lin, Chen-Yu Wang
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Publication number: 20230415461Abstract: 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: ApplicationFiled: February 22, 2023Publication date: December 28, 2023Inventors: Tzu-Jung HUANG, Yen-Chen HUANG, Cheng-Fan WANG
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Publication number: 20230182447Abstract: 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: ApplicationFiled: June 29, 2022Publication date: June 15, 2023Inventors: Yen-Chen Huang, Tzu-Jung Huang, Cheng Fan Wang
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Patent number: 11492436Abstract: 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: GrantFiled: January 24, 2022Date of Patent: November 8, 2022Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.Inventors: Jyun-Ru Sun, Huan-Ming Chang, Cheng-Fan Wang, Chia-Hao Hsu
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Patent number: 11426981Abstract: 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: GrantFiled: February 12, 2020Date of Patent: August 30, 2022Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.Inventors: Tzu-Jung Huang, Chin-Yen Chang, Cheng-Fan Wang
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Publication number: 20220251273Abstract: 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: ApplicationFiled: January 24, 2022Publication date: August 11, 2022Inventors: Jyun-Ru SUN, Huan-Ming CHANG, Cheng-Fan WANG, Chia-Hao HSU
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Patent number: 11198770Abstract: 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: GrantFiled: March 19, 2020Date of Patent: December 14, 2021Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.Inventors: Chin-Yen Chang, Cheng-Fan Wang
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Patent number: 11136441Abstract: 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: GrantFiled: February 12, 2020Date of Patent: October 5, 2021Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.Inventors: Tzu-Jung Huang, Chin-Yen Chang, Cheng-Fan Wang
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Patent number: 11065846Abstract: 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: GrantFiled: February 12, 2020Date of Patent: July 20, 2021Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.Inventors: Chin-Yen Chang, Cheng-Fan Wang
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Publication number: 20210162717Abstract: 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: ApplicationFiled: February 12, 2020Publication date: June 3, 2021Inventors: Chin-Yen CHANG, Cheng-Fan WANG
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Publication number: 20210162718Abstract: 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: ApplicationFiled: February 12, 2020Publication date: June 3, 2021Inventors: Tzu-Jung HUANG, Chin-Yen CHANG, Cheng-Fan WANG
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Publication number: 20210163697Abstract: 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: ApplicationFiled: February 12, 2020Publication date: June 3, 2021Inventors: Tzu-Jung HUANG, Chin-Yen CHANG, Cheng-Fan WANG
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Publication number: 20210095081Abstract: 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: ApplicationFiled: September 26, 2019Publication date: April 1, 2021Inventors: Cheng-Fan WANG, Chin-Yen CHANG
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Publication number: 20200354534Abstract: 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: ApplicationFiled: March 19, 2020Publication date: November 12, 2020Inventors: Chin-Yen CHANG, Cheng-Fan WANG
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Patent number: 10676578Abstract: 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: GrantFiled: May 10, 2019Date of Patent: June 9, 2020Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.Inventors: Chin-Yen Chang, Cheng-Fan Wang
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Patent number: 10438575Abstract: 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: GrantFiled: October 31, 2018Date of Patent: October 8, 2019Assignee: CHANG CHUN PETROCHEMICAL CO., LTD.Inventors: Cheng-Fan Wang, Chin-Yen Chang
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Publication number: 20190156811Abstract: 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: ApplicationFiled: October 31, 2018Publication date: May 23, 2019Applicant: CHANG CHUN PETROCHEMICAL CO., LTD.Inventors: Cheng-Fan WANG, Chin-Yen CHANG
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Publication number: 20050033954Abstract: 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: ApplicationFiled: August 2, 2004Publication date: February 10, 2005Inventors: Cheng-Fan Wang, Cheng-Ju Tsai, Chun-Ta Chen
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Publication number: 20030210064Abstract: 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: ApplicationFiled: April 10, 2003Publication date: November 13, 2003Inventors: Yao-kui Huang, Cheng Fan Wang
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Patent number: 6295727Abstract: 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: GrantFiled: January 8, 1999Date of Patent: October 2, 2001Assignee: Via Technologies, Inc.Inventors: Yao-Kui Huang, Cheng-Fan Wang