Abstract: A sensor package structure includes a substrate, a sensor chip, a plurality of wires, a supporting frame, a transparent cover, and a molding compound. The substrate includes a chip bonding region and a plurality of first pads outside the chip bonding region. The sensor chip is disposed on the chip bonding region, and includes a sensing region and a plurality of second pads. Each wire has two opposite ends respectively connected to one of the first pads and one of the second pads. The supporting frame is arranged above the substrate and/or the sensor chip and includes a positioning portion. The transparent cover is fixed in position above the sensor chip by the positioning portion so as to maintain a vertical distance there-between. The molding compound fills the space in-between the substrate and the supporting frame and covers a part of an upper surface of the supporting frame.

Abstract: Novel aromatic polyimides are disclosed with sufficient physical properties to be useful in 3D printing.

Abstract: Novel aromatic polyimides are disclosed with sufficient physical properties to be useful in 3D printing.

Abstract: A sensor package structure includes a substrate, a sensor chip, a plurality of wires, a supporting frame, a transparent cover, and a molding compound. The substrate includes a chip bonding region and a plurality of first pads outside the chip bonding region. The sensor chip is disposed on the chip bonding region, and includes a sensing region and a plurality of second pads. Each wire has two opposite ends respectively connected to one of the first pads and one of the second pads. The supporting frame is arranged above the substrate and/or the sensor chip and includes a positioning portion. The transparent cover is fixed in position above the sensor chip by the positioning portion so as to maintain a vertical distance there-between. The molding compound fills the space in-between the substrate and the supporting frame and covers a part of an upper surface of the supporting frame.

Abstract: A method for preparing asymmetric 3,4?-(hexafluroisopropylidene) dipthalic anhydride (a-6FDA) and asymmetric 3,4?-(methylene)diphthalic anhydride (a-MDPA) from asymmetric 2,3,3?,4?-benzophenone dianhydride (a-BTDA). First, a-BTDA is converted to its corresponding N-alkyl or N-phenyl bisimides by reacting with either methylamine or aniline. The sequential addition of two trifluoromethyl (CF3) groups to the carbonyl unit of a-BTDA produce the corresponding bisimides of asymmetric 6FDA, which is hydrolyzed to the asymmetric 6F-tetracarboxylic acid followed by cyclodehydration to obtain asymmetric 6F-dianhydride (a-6FDA). Separately, the carbonyl unit of bisimides of a-BTDA is reduced to a methylene unit to afford the corresponding bisimides of asymmetric 3,4?-(methylene)diphthalic anhydride, which is hydrolyzed to the asymmetric methylene tetracarboxylic acid followed by cyclodehydration to obtain 3,4?-(methylene)diphthalic anhydride (a-MDPA).

Abstract: A method for reducing the tilt of an optical unit during manufacture of an image sensor includes the steps of: providing a semimanufacture of the image sensor, carrying out a preheating process, carrying out an adhesive application process, carrying out an optical unit mounting process, and carrying out a packaging process. Due to the preheating process, the semimanufacture will be subjected to a stabilized process environment during the adhesive application process and the optical unit mounting process, so as for the optical unit to remain highly flat once attached to the semimanufacture. The method reduces the chances of tilt and crack of the optical unit and thereby contributes to a high yield rate.

Abstract: This invention relates to the composition and processes for preparing thermoset polyimides derived from an asymmetric dianhydride, namely 2,3,3?,4?-benzophenone dianhydride (a-BTDA) with at least one diamine, and a monofunctional terminal endcaps. The monofunctional terminating groups include 4-phenylethynylphthalic anhydride ester-acid derivatives, phenylethyl trimellitic anhydride (PETA) and its ester derivatives as well as 3-phenylethynylaniline. The process of polyimide composite comprises impregnating monomer reactants of dianhydride or its ester-acid derivatives, diamine and with monofunctional reactive endcaps into glass, carbon, quartz or synthetic fibers and fabrics, and then stack up into laminates and subsequently heated to between 150-375° C. either at atmosphere or under pressure to promote the curing and crosslinking of the reactive endcaps to form a network of thermoset polyimides.

Abstract: An image sensor packaging structure with a low transmittance encapsulant is provided. The image sensor packaging structure includes a substrate, a chip, a transparent lid, and the low transmittance encapsulant. The chip is combined with the substrate. The transparent lid is adhered to the chip and cover above a sensitization area of the chip to form an air cavity. The low transmittance encapsulant is formed on the substrate and encapsulates the chip and the transparent lid so as to accomplish the package of the image sensor packaging structure. Due to the feature of prohibiting from light passing through the low transmittance encapsulant, the arrangement of the low transmittance encapsulant can avoid the light from outside interfere the image sensing effect of the image sensor. Therefore, the quality of the image sensing can be ensured.

Abstract: A manufacturing method of a molded image sensor packaging structure with a predetermined focal length and the structure using the same are disclosed. The manufacturing method includes: providing a substrate; providing a sensor chip disposed on the substrate; providing a lens module set over the sensing area of the chip to form a semi-finished component; providing a mold that has an upper mold member with a buffer layer; disposing the semi-finished component into the mold to form a mold cavity therebetween; injecting a molding compound into the mold cavity; and after transfer molding the molding compound, opening the mold and performing a post mold cure process to cure the molding compound. The buffer layer can fill the air gap between the upper surface of the lens module and the upper mold member, thereby preventing the upper surface of the lens module from being polluted by the molding compound.

Abstract: The present invention discloses a method for reducing the tilt of a transparent window during manufacturing of an image sensor. The method includes the following steps: providing a semimanufacture of the image sensor; carrying out a preheating process; carrying out an adhesive spreading process; carrying out a transparent window closing process; and carrying out a packaging process. By carrying out the preheating process, the environmental conditions can be stabilized during the adhesive spreading process and the transparent window closing process such that the transparent window can be kept highly flat after combining. By the implementation of the present invention, the chance of tilt and crack of the transparent window during manufacturing of the image sensor can be reduced, thereby achieving the goal for a better yield rate.

Abstract: An image sensor packaging structure with a predetermined focal length is provided. The image sensor packaging structure includes a substrate, a chip, an optical assembly, and an encapsulation compound. The chip has a sensitization area and is coupled to the substrate. Conductive contacts on the substrate are electrically connected with conductive contacts around the sensitization area. The optical assembly has the predetermined focal length and is disposed above the chip so as to form an air cavity between the optical assembly and the sensitization area of the chip. The encapsulation compound is formed on the substrate to surround the chip and the optical assembly. With the above stated structure, not only can the focus adjusting procedure be dispensed with, but also the image sensor packaging structure can be manufactured by a molding or dispensing process.

Abstract: The present invention discloses a method for reducing the tilt of a transparent window during manufacturing of an image sensor. The method includes the following steps: providing a semimanufacture of the image sensor; carrying out a preheating process; carrying out an adhesive spreading process; carrying out a transparent window closing process; and carrying out a packaging process. By carrying out the preheating process, the environmental conditions can be stabilized during the adhesive spreading process and the transparent window closing process such that the transparent window can be kept highly flat after combining By the implementation of the present invention, the chance of tilt and crack of the transparent window during manufacturing of the image sensor can be reduced, thereby achieving the goal for a better yield rate.

Abstract: A manufacturing method of a molded image sensor packaging structure with a predetermined focal length and the structure using the same are disclosed. The manufacturing method includes: providing a substrate; providing a sensor chip disposed on the substrate; providing a lens module set over the sensing area of the chip to form a semi-finished component; providing a mold that has an upper mold member with a buffer layer; disposing the semi-finished component into the mold to form a mold cavity therebetween; injecting a molding compound into the mold cavity; and after transfer molding the molding compound, opening the mold and performing a post mold cure process to cure the molding compound. The buffer layer can fill the air gap between the upper surface of the lens module and the upper mold member, thereby preventing the upper surface of the lens module from being polluted by the molding compound.

Abstract: This invention relates to the compositions and processes for preparing thermoset and thermoplastic polyimides derived from novel asymmetrical dianhydrides: specifically 2,3,3?,4? benzophenone dianhydride (a-BTDA), and 3,4?-(hexafluoroisopropylidene)diphthalic anhydride (a-6FDA). The a-BTDA anhydride is prepared by Suzuki coupling with catalysts from a mixed anhydride of 3,4-dimethylbenzoic acid or 2,3-dimethylbenzoic acid with 2,3-dimethylphenylboronic acid or 3,4-dimethylphenylboronic acid respectively, to form 2,3,3?,4?-tetramethylbenzophenone which is oxidized to form 2,3,3?,4?-benzophenonetetracarboxylic acid followed by cyclodehydration to obtain a-BTDA. The a-6FDA is prepared by nucleophilic triflouoromethylation of 2,3,3?,4?-tetramethylbenzophenone with trifluoromethyltrimethylsilane to form 3,4?-(trifluoromethylmethanol)-bis(o-xylene) which is converted to 3,4?-(hexafluoroisopropylidene-bis(o-xylene).

Abstract: An image sensor structure and an integrated lens module thereof are provided. In the image sensor structure with the integrated lens module, the image sensor structure comprises a chip and a lens module. The chip has light-sensing elements, first conducting pads, and a conducting channel. The light-sensing elements are electrically connected to the first conducting pads and the first conducting pads are electrically connected to one end of the conducting channel passing through the chip. The lens module comprises a holder and at least one lens. The holder has a through hole and the lens is embedded in the through hole and integrated with the holder. By using the integrated lens and holder, a manufacturing process of the image sensor structure is simplified and a manufacturing cost of the image sensor structure is reduced.

Abstract: An image sensor packaging structure with a low transmittance encapsulant is provided. The image sensor packaging structure includes a substrate, a chip, a transparent lid, and the low transmittance encapsulant. The chip is combined with the substrate. The transparent lid is adhered to the chip and cover above a sensitization area of the chip to form an air cavity. The low transmittance encapsulant is formed on the substrate and encapsulates the chip and the transparent lid so as to accomplish the package of the image sensor packaging structure. Due to the feature of prohibiting from light passing through the low transmittance encapsulant, the arrangement of the low transmittance encapsulant can avoid the light from outside interfere the image sensing effect of the image sensor. Therefore, the quality of the image sensing can be ensured.

Abstract: An image sensor packaging structure with a predetermined focal length is provided. The image sensor packaging structure includes a substrate, a chip, an optical assembly, and an encapsulation compound. The chip has a sensitization area and is coupled to the substrate. Conductive contacts on the substrate are electrically connected with conductive contacts around the sensitization area. The optical assembly has the predetermined focal length and is disposed above the chip so as to form an air cavity between the optical assembly and the sensitization area of the chip. The encapsulation compound is formed on the substrate to surround the chip and the optical assembly. With the above stated structure, not only can the focus adjusting procedure be dispensed with, but also the image sensor packaging structure can be manufactured by a molding or dispensing process.

Abstract: An image sensor structure and an integrated lens module thereof are provided. In the image sensor structure with the integrated lens module, the image sensor structure comprises a chip and a lens module. The chip has light-sensing elements, first conducting pads, and a conducting channel. The light-sensing elements are electrically connected to the first conducting pads and the first conducting pads are electrically connected to one end of the conducting channel passing through the chip. The lens module comprises a holder and at least one lens. The holder has a through hole and the lens is embedded in the through hole and integrated with the holder. By using the integrated lens and holder, a manufacturing process of the image sensor structure is simplified and a manufacturing cost of the image sensor structure is reduced.

Abstract: An image sensor module package structure with a supporting element comprises a chip, the supporting element and a light-transmitting element. The chip has light-sensing elements arranged on a light-sensing area of a first surface thereof, first conducting pads electrically connected to the light-sensing elements, and a conducting channel passing through the chip and electrically connected to the first conducting pads at one end. The supporting element has an opening, a first coupling surface, and a second coupling surface. The opening corresponds to the light-sensing area and the first coupling surface is combined with the first surface of the chip while the light-transmitting element is combined with the second coupling surface. The supporting element separates the light-transmitting element from the chip by a proper distance, so as to enhance an image sensing accuracy of an image sensor module.

Abstract: This invention relates to the composition and a solvent-free process for preparing novel imide oligomers and polymers specifically formulated with effective amounts of a dianhydride such as 2,3,3?,4-biphenyltetra carboxylic dianydride (a-BPDA), at least one aromatic diamine and an endcapped of 4-phenylethynylphthalic anhydride (PEPA) or nadic anhydride to produce imide oligomers that possess a low-melt viscosity of 1-60 poise at 260-280° C. When the imide oligomer melt is cured at about 371° C. in a press or autoclave under 100-500 psi, the melt resulted in a thermoset polyimide having a glass transition temperature (Tg) equal to and above 310° C. A novel feature of this process is that the monomers; namely the dianhydrides, diamines and the endcaps, are melt processable to form imide oligomers at temperatures ranging between 232-280° C. (450-535° F.) without any solvent.