Patents by Inventor Ching-Chiang Yu

Ching-Chiang Yu 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: 20240389240
    Abstract: An embodiment composite material for semiconductor package mount applications may include a first component including a tin-silver-copper alloy and a second component including a tin-bismuth alloy or a tin-indium alloy. The composite material may form a reflowed bonding material having a room temperature tensile strength in a range from 80 MPa to 100 MPa when subjected to a reflow process. The reflowed bonding material may include a weight fraction of bismuth that is in a range from approximately 4% to approximately 15%. The reflowed bonding material may an alloy that is solid solution strengthened by a presence of bismuth or indium that is dissolved within the reflowed bonding material or a solid solution phase that includes a minor component of bismuth dissolved within a major component of tin. In some embodiments, the reflowed bonding material may include intermetallic compounds formed as precipitates such as Ag3Sn and/or Cu6Sn5.
    Type: Application
    Filed: July 30, 2024
    Publication date: November 21, 2024
    Inventors: Chao-Wei Chiu, Chih-Chiang Tsao, Jen-Jui Yu, Hsuan-Ting Kuo, Hsiu-Jen Lin, Ching-Hua Hsieh
  • Publication number: 20240371813
    Abstract: A semiconductor package includes a substrate, a semiconductor device over the substrate and a plurality of solder joint structures bonded between the semiconductor device and the substrate, wherein each of the plurality of solder joint structures includes, by weight percent, 2% to 23% of Indium (In).
    Type: Application
    Filed: July 15, 2024
    Publication date: November 7, 2024
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Jen-Jui Yu, Chih-Chiang Tsao, Hsuan-Ting Kuo, Mao-Yen Chang, Hsiu-Jen Lin, Ching-Hua Hsieh, Hao-Jan Pei
  • Publication number: 20240332215
    Abstract: A package structure and a method of forming the same are provided. The package structure includes a die, an encapsulant, a redistribution layer (RDL) structure, a passive device, and a plurality of dummy items. The encapsulant laterally encapsulates the die. The RDL structure is disposed on the die and the encapsulant. The passive device is disposed on and electrically bonded to the RDL structure. The plurality of dummy items are disposed on the RDL structure and laterally aside the passive device, wherein top surfaces of the plurality of dummy items are higher than a top surface of the passive device.
    Type: Application
    Filed: June 12, 2024
    Publication date: October 3, 2024
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Jen-Jui Yu, Ching-Hua Hsieh, Cheng-Ting Chen, Hsiu-Jen Lin, Wei-Yu Chen, Chih-Chiang Tsao, Chao-Wei Chiu
  • Patent number: 12107064
    Abstract: A semiconductor package includes a substrate, a semiconductor device over the substrate and a plurality of solder joint structures bonded between the semiconductor device and the substrate, wherein each of the plurality of solder joint structures includes, by weight percent, 2% to 23% of Indium (In).
    Type: Grant
    Filed: April 13, 2022
    Date of Patent: October 1, 2024
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Jen-Jui Yu, Chih-Chiang Tsao, Hsuan-Ting Kuo, Mao-Yen Chang, Hsiu-Jen Lin, Ching-Hua Hsieh, Hao-Jan Pei
  • Patent number: 12051655
    Abstract: A package structure and a method of forming the same are provided. The package structure includes a die, an encapsulant, a redistribution layer (RDL) structure, a passive device, and a plurality of dummy items. The encapsulant laterally encapsulates the die. The RDL structure is disposed on the die and the encapsulant. The passive device is disposed on and electrically bonded to the RDL structure. The plurality of dummy items are disposed on the RDL structure and laterally aside the passive device, wherein top surfaces of the plurality of dummy items are higher than a top surface of the passive device.
    Type: Grant
    Filed: July 16, 2021
    Date of Patent: July 30, 2024
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Jen-Jui Yu, Ching-Hua Hsieh, Cheng-Ting Chen, Hsiu-Jen Lin, Wei-Yu Chen, Chih-Chiang Tsao, Chao-Wei Chiu
  • Patent number: 12051639
    Abstract: A package structure includes a first package, a second package, a conductive spacer, and a flux portion. The first package includes a semiconductor die. The second package is stacked to the first package. The conductive spacer is disposed between and electrically couples the first package and the second package. The flux portion is disposed between and electrically couples the first package and the conductive spacer, where the flux portion includes a first portion and a second portion separating from the first portion by a gap, and the first portion and the second portion are symmetric about an extending direction of the gap. The gap is overlapped with the conductive spacer.
    Type: Grant
    Filed: March 2, 2022
    Date of Patent: July 30, 2024
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chih-Chiang Tsao, Chao-Wei Chiu, Jen-Jui Yu, Hsiu-Jen Lin, Ching-Hua Hsieh
  • Patent number: 7402765
    Abstract: The present invention discloses a frame for use in flat keys. The frame includes a frame body and blocking plates. The frame body holds and supports a keycap, wherein the keycap can be pressed toward the bottom of the frame body. The blocking plates are installed on the frame body and contacted the bottom surface of the keycap, wherein the blocking plates push the keycap toward the top of the frame body to maintain a predetermined distance. The frame of the present invention may be made, in one piece, from plastic such that a slim keyboard equipped with the frames of the present invention has advantages, such as low cost, swift assembly, and high quality of assembly.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: July 22, 2008
    Assignee: Behavior Tech Computer Corp.
    Inventor: Ching-Chiang Yu
  • Patent number: 7329018
    Abstract: An illuminated human-machine interface device does not need prepare electric energy by itself to supply power for a light source and can operate by taking advantage of the brightness of a screen of a monitor without any extraordinary illuminating equipment. It can be a keyboard and the positions on which the fluorescent light emits from the keyboard can be chosen on plural key caps. Secondly, it can be a keyboard and the position on which the fluorescent light emits from the keyboard can be chosen on an upper cover. The printed symbols on the key caps and the upper cover can both be formed by positive or negative plate printing with fluorescent ink, or the key caps and the upper cover can both be mixed with fluorescent material therein. Thirdly, it can be a keyboard with a fluorescent plate thereon to emit fluorescent light to make the keyboard a fluorescent keyboard. Fourthly, it can be a mouse having a housing with fluorescent material therein.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: February 12, 2008
    Assignee: Behavior Tech Computer Corp.
    Inventors: Ching-Chiang Yu, Chih Wen Su
  • Publication number: 20070222753
    Abstract: A computer mouse is provided. The computer mouse includes an upper cover, a scroll wheel module and a supporting component. The scroll wheel module includes at least a scroll wheel, an axle orthogonally installed on and passing through the scroll wheel, and a supporting component installed on an inner surface of the upper cover, and touching and supporting the axle.
    Type: Application
    Filed: December 7, 2006
    Publication date: September 27, 2007
    Inventors: Ching-Chiang Yu, Tien-Hao Yang
  • Publication number: 20060285309
    Abstract: An illuminated human-machine interface device does not need prepare electric energy by itself to supply power for a light source and can operate by taking advantage of the brightness of a screen of a monitor without any extraordinary illuminating equipment. It can be a keyboard and the positions on which the fluorescent light emits from the keyboard can be chosen on plural key caps. Secondly, it can be a keyboard and the position on which the fluorescent light emits from the keyboard can be chosen on an upper cover. The printed symbols on the key caps and the upper cover can both be formed by positive or negative plate printing with fluorescent ink, or the key caps and the upper cover can both be mixed with fluorescent material therein. Thirdly, it can be a keyboard with a fluorescent plate thereon to emit fluorescent light to make the keyboard a fluorescent keyboard. Fourthly, it can be a mouse having a housing with fluorescent material therein.
    Type: Application
    Filed: August 25, 2006
    Publication date: December 21, 2006
    Inventors: Ching-Chiang Yu, Chih Su
  • Publication number: 20060266629
    Abstract: The present invention discloses a frame for use in flat keys. The frame includes a frame body and blocking plates. The frame body holds and supports a keycap, wherein the keycap can be pressed toward the bottom of the frame body. The blocking plates are installed on the frame body and contacted the bottom surface of the keycap, wherein the blocking plates push the keycap toward the top of the frame body to maintain a predetermined distance. The frame of the present invention may be made, in one piece, from plastic such that a slim keyboard equipped with the frames of the present invention has advantages, such as low cost, swift assembly, and high quality of assembly.
    Type: Application
    Filed: April 27, 2006
    Publication date: November 30, 2006
    Inventor: Ching-Chiang Yu
  • Patent number: 6876312
    Abstract: This invention relates to a keyboard with multi-function keys are installed nearby the space bar to make it very convenient to use. The keyboard incorporates the multi-function keys, such as a scroll-control-ball which can move the screen from various directions, an up-down-left-right keys to control the position of the cursor, editing functions keys which provide such functions as cut, copy, paste, mark, recovery, scroll page, insert and delete to enable speedy editing. In addition to the above-mentioned function keys, the multi-function keys comprise a finger-print-identification function device to identify the user. Furthermore, the multi-function keys further comprise a liquid crystal display light to show the status of the numeral and upper and lower case.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: April 5, 2005
    Assignee: Behavior Tech Computer Corporation
    Inventor: Ching-Chiang Yu
  • Publication number: 20050057916
    Abstract: An illuminated human-machine interface device does not need prepare electric energy by itself to supply power for a light source and can operate by taking advantage of the brightness of a screen of a monitor without any extraordinary illuminating equipment. It can be a keyboard and the positions on which the fluorescent light emits from the keyboard can be chosen on plural key caps. Secondly, it can be a keyboard and the position on which the fluorescent light emits from the keyboard can be chosen on an upper cover. The printed symbols on the key caps and the upper cover can both be formed by positive or negative plate printing with fluorescent ink, or the key caps and the upper cover can both be mixed with fluorescent material therein. Thirdly, it can be a keyboard with a fluorescent plate thereon to emit fluorescent light to make the keyboard a fluorescent keyboard. Fourthly, it can be a mouse having a housing with fluorescent material therein.
    Type: Application
    Filed: February 9, 2004
    Publication date: March 17, 2005
    Inventors: Ching-Chiang Yu, Chih Su
  • Patent number: 6572289
    Abstract: A pushbutton of a keyboard includes a cap supported on a base board by a linkage comprising first and second links pivoted together whereby the cap is movable from a released to a depressed positions when depressed. Each link has upper and lower pivots respectively connected to the cap and the base board. The links have two side bars connected between the upper and lower pivots thereof. Two spring arms extend from the base board having free ends forming L-shaped offset sections receivingly engaging L-shaped recesses defined in corresponding side bars for biasing the cap toward the released position. The spring arms deform when the cap is depressed. When the spring arms are deformed to an extent, the offset sections are abruptly driven toward and impact a contact surface of the recesses, generating a sound of impact and a pulse-like reaction caused by the impact. The deformation of the spring arms helps returning the cap back to the released position when the depression is released.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: June 3, 2003
    Assignee: Behavior Tech Computer Corporation
    Inventors: Chih Lung Lo, Yong Te Tsao, Ching-Chiang Yu
  • Patent number: 6570113
    Abstract: A key switch apparatus is provided. The key switch apparatus includes a key base, a key cap, and a collapsible linking assembly extending between the key cap and the key base. The linking assembly is reconfigurable between extended and collapsed positions for displaceably supporting the key cap relative to the key base. The linking assembly includes pivotally coupled first and second linking members. The first linking member is provided with a flexible member that is resiliently biased to bulge transversely outward toward the key cap when the linking assembly is disposed in the extended position. The second linking member is formed with a press member that maintains contact with the flexible member, such that it transversely deflects the flexible member inward toward the key base responsive to the application of a pressing force upon the key cap.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: May 27, 2003
    Assignee: Behavior Tech Computer Corporation
    Inventors: Ching-Chiang Yu, Yong Te Tsao
  • Publication number: 20030029708
    Abstract: A key switch, comprising a key base, a key cap, and a first linking member and a second linking member are installed between the key base and the key cap, and a flexible member installed on the first linking member. The flexible member can be a spring, and is curved outwardly at its normal position. The second linking member has a pressing lever that is in contact with the flexible member. When the key switch is pressed down, the pressing lever compresses the flexible member, causing the flexible member to change its shape from an outward curve to a straight line, then further to an inward curve, producing a sense of two-step touch control. When the pressing force is released, the resilient force of the flexible member restores the key switch to its original position, thereby requiring the installation of any rubber components.
    Type: Application
    Filed: August 10, 2001
    Publication date: February 13, 2003
    Inventors: Ching-Chiang Yu, Yong Te Tsao
  • Publication number: 20030030623
    Abstract: A collapsible keyboard, comprising a center keyboard unit, a left keyboard unit, a right keyboard unit, and a base. Between the left and right keyboard units and the center keyboard unit are connecting members to join them together as one unit. The left and right keyboard units joined to the sides of the center keyboard unit can be folded along the sides of the center keyboard unit. The base serves to accommodate the collapsed keyboard, saving space for storage when the keyboard is not in use.
    Type: Application
    Filed: August 10, 2001
    Publication date: February 13, 2003
    Inventor: Ching-Chiang Yu
  • Publication number: 20030011496
    Abstract: This invention relates to a keyboard with multi-function keys are installed nearby the space bar to make it very convenient to use. The keyboard incorporates the multi-function keys, such as a scroll-control-ball which can move the screen from various directions, an up-down-left-right keys to control the position of the cursor, editing functions keys which provide such functions as cut, copy, paste, mark, recovery, scroll page, insert and delete to enable speedy editing. In addition to the above-mentioned function keys, the multi-function keys comprise a finger-print-identification function device to identify the user. Furthermore, the multi-function keys further comprise a liquid crystal display light to show the status of the numeral and upper and lower case.
    Type: Application
    Filed: July 10, 2001
    Publication date: January 16, 2003
    Inventor: Ching-Chiang Yu
  • Publication number: 20030002905
    Abstract: A push key with replaceable key cap, comprising a key cap unit, an external ring on top of the key cap unit, the formation of a hollow accommodating chamber inside the external ring, and a key cap. Below the key cap and in keeping with the shape of the external ring is a coupling unit that can be coupled with the external ring. Inside the key cap and extending downward is a key post reaching into the accommodating chamber. Basically, the key cap and the external ring are coupled with each other to enable convenient replacement of the key cap.
    Type: Application
    Filed: June 28, 2001
    Publication date: January 2, 2003
    Inventors: Ching-Chiang Yu, Chih Wen Su
  • Publication number: 20030001783
    Abstract: This invention relates to an antenna base, comprising a printed circuit board. A base is designed in a region at an appropriate location on the printed circuit board. The base is printed with silver glue on the printed circuit board. This base serves as the antenna base, or this base along with the printed circuits on the printed circuit boards form the antenna base, so that the antenna can effectively transmit signals when the keyboard, mouse or other computer peripheral equipment is connected with the antenna.
    Type: Application
    Filed: June 28, 2001
    Publication date: January 2, 2003
    Inventors: Ching-Chiang Yu, Yen-Liang Kuan