Abstract:
A wafer treating method for making adhesive chips is provided. A liquid adhesive with two-stage property is coated on a surface of a wafer. Then, the wafer is pre-cured to make the liquid adhesive transform an adhesive film having B-stage property which has a glass transition temperature between −40 and 175 degree C. for example. After positioning the wafer, the wafer is singulated to form a plurality of chips with adhesive for chip-to-chip stacking, chip-to-substrate or chip-to-lead frame attaching.
Abstract:
A method for producing an alignment layer for a liquid crystal panel, which is produced by modifying an alignment film in a fixed direction and at a fixed angle by using an atmospheric pressure plasma source to form a uniform and isotropic alignment layer on the surface of the substrate. The resultant alignment layer has good uniformity and high anchoring energy, and the pre-tilt angle can be selected as desired. In addition, there are no problems with static charge generation, dust pollution and the like as in the prior arts. The method of the present invention is not restricted by vacuum apparatuses that need ion alignment or vacuum plasma alignment and the like and is not restricted by the size of the equipment. Therefore, the method of the present invention is suitable for treating the surface of an alignment layer of a large size liquid crystal panel.
Abstract:
A chip package structure including a first substrate, a second substrate, bumps and adhesive blocks is provided. The first substrate has first bonding pads. The second substrate is disposed above the first substrate and has second bonding pads. The bumps are respectively arranged on the first bonding pads or the second bonding pads, and the second substrate is electrically connected to the first substrate through the bumps. The adhesive material with B-stage property are respectively arranged between the first bonding pads and the second bonding pads and enclose each bump. The bumps can be stud bumps or plating bumps.
Abstract:
A manufacturing process for chip package without core is disclosed. First of all, a conductive layer with a first surface and a second surface is provided. A first film is formed onto the first surface, and the conductive layer is patterned to form a patterned circuit layer. A solder resistance layer is formed on the patterned circuit layer and then patterned to expose parts of the patterned circuit layer. After a second film is formed on the solder resistance layer and the first film is removed, a chip is disposed on the first surface and electrically connected to the patterned circuit layer. A molding compound is formed to cover the patterned circuit layer and fix the chip onto the patterned circuit layer. After that, the second film is removed.
Abstract:
This invention relates to a method of preparing a first alicyclic compound having a vinyl group on one alkyl ring carbon and an alkoxy, cycloalkoxy, heterocycloalkyoxy, aryloxy, or heteroaryloxy group on the same ring carbon; the method comprising reacting an aliphatic alcohol or an aromatic alcohol with a second alicyclic compound having an exo cyclic carbon-carbon double bond, wherein the non-ring olefinic carbon is substituted with a hydroxymethyl, thiomethyl, alkoxymethyl, aryloxymethyl, acyloxymethyl, alkylsulfonyloxymethyl, arylsulfonyloxymethyl, alkylsulfonylmethyl, arylsulfonylmethyl, halomethyl, or silyloxymethyl group.
Abstract:
An electropolishing device having: an electrode device, which includes a positive electrode guide, a negative electrode guide, a positive electrode plate, a negative electrode plate and a negative working electrode; a clamping apparatus, which includes at least an insulated screw, an upper insulated piece and a lower insulated piece; and an insulated structure, which includes an upper insulated cover and a lower insulated cover.
Abstract:
An automatic feature extraction system for analyzing a face image and finding the facial features of the face. In the pre-processing stage, a second-chance region growing method is applied to determine a face region on the face image. In the feature extraction stage, three primary facial features, including both eyes and the mouth, are extracted first. Then other facial features can be extracted according to these extracted primary facial features. Searching feature points can be achieved by calculating the cost function of each point using a simple feature template. In addition, a genetic algorithm can be used to accelerate the process of searching feature points.
Abstract:
Disclosed are metal reinforced layers disposed at the upper and lower surfaces of the thin substrate to reinforce the strength of the thin substrate. With reinforced strength, the thin substrate is not susceptible to deform due to temperature fluctuation during packaging process, and thus the warpage for the semiconductor package is significantly eliminated. According to another aspect of the present invention, the metal reinforced layer at the lower surface of the thin substrate is functioned as a ground plane for the ball grid array (BGA) semiconductor package for better grounding effect. The present invention provides an optimal design for the return current path and impedance matching control. Besides, in high frequency application, the metal reinforced layer also can reduce the noise and cross talk among the signal lines of the ball grid array (BGA) semiconductor package.
Abstract:
A method and apparatus for molding a flip chip semiconductor device are disclosed herein. A substrate having at least one air hole is provided. A chip is mounted on the substrate by multiple solder balls such that the air hole is beneath the chip and surrounded by the multiple solder balls. The substrate mounted with the chip is placed in a mold apparatus which defines at least one air channel aligning with the air hole, such that air can be exhausted via the air hole and the air channel when encapsulation material is filling the mold apparatus.
Abstract:
A non-contact pick-up device is disclosed. The non-contact pick-up device mainly includes a disk, and a plurality of air nozzles on the disk. Each nozzle has an air channel; and an upper end of the channel is tilt outwards. Therefore, as a disc-shaped article is placed on the disk; air jets out from the nozzles, due to Bernoulli principle, pressure difference is formed on the disc-shaped article. Thus, due to the action of atmosphere pressure, the disc-shaped article will be clamped. The pick-up device may be used in semiconductor manufacturing process for clamping a wafer.