Patent classifications
H05K2203/085
Wrappable EMI shields
According to the various aspects, the present device includes a printed circuit board having a top surface and a bottom surface, with a plurality of semiconductor devices coupled to the top surface and a flexible electromagnetic shield wrap conformally positioned over and between the plurality of semiconductor devices and the top surface of the printed circuit board. The flexible electromagnetic shield wrap is conformally positioned by applying a vacuum and is removable after the vacuum seal is broken.
PROCESS FOR LAMINATING GRAPHENE-COATED PRINTED CIRCUIT BOARDS
Processes for laminating a graphene-coated printed circuit board (PCB) are disclosed. An example laminated PCB may include a lamination stack that may include an inner core, an adhesive layer, and at least one graphene-metal structure. Pressure and heat—which may be applied under vacuum or controlled gas atmosphere—may be applied to the lamination stack, after all materials have been placed. The graphene of the graphene-metal structure is designed to promote high frequency performance and heat management within the PCB.
Solder member mounting system
A solder member mounting method includes providing a substrate having bonding pads formed thereon, detecting a pattern interval of the bonding pads, selecting one of solder member attachers having different pattern intervals from each other, such that the one selected solder member attacher of the solder member attachers has a pattern interval corresponding to the detected pattern interval of the bonding pads, and attaching solder members on the bonding pads of the substrate, respectively, using the one selected solder member attacher.
Reel-to-reel laser ablation methods and devices in FPC fabrication
A reel-to-reel method to laser-ablate a circuitry pattern on the fly in a reel-to-reel machine as part of a process to fabricate a printed flexible circuit. The laser ablation method includes using an appropriate laser to irradiate a metal sheet thus ablating the edges of an intended circuitry pattern. Slugs can be removed by using an optional sacrificial liner, and the slugs can be optionally ablated into smaller parts first. The laser ablation can also include an optional method of creating tie bars to provide structural support to the web of circuitry patterns.
Ceramic circuit board and production method therefor
A ceramic circuit substrate having high bonding performance and excellent thermal cycling resistance properties, having a circuit pattern provided on a ceramic substrate with a braze material layer interposed therebetween, and a protruding portion formed by the braze material layer protruding from the outer edge of the circuit pattern, wherein: the braze material layer includes Ag, Cu, Ti, and Sn or In; and an Ag-rich phase is formed continuously for 300 μm or more, towards the inside, from an outer edge of the protruding portion, along a bonding interface between the ceramic substrate and the circuit pattern, and has a bonding void ratio of 1.0% or less.
Method and control device for laminating display panel as well as vacuum laminator
This application discloses a method for laminating display panel, a control device for laminating display panel, and a vacuum laminator; the method comprising: conducting a vacuumization at the time of a 1st rough alignment for a 1st substrate and a 2nd substrate put into an enclosed cavity; stopping vacuumization at the time of a 2nd rough alignment for the two.
SYSTEMS FOR PRINTING VISCOUS MATERIALS USING LASER ASSISTED DEPOSITION
In systems for printing a viscous material, the printing and post processing of the viscous material are performed sequentially one after another. In an initial step, a viscous material is printed on a sample mounted on a receiver substrate using a donor module and a laser scanner, and then the donor module is replaced with a post processing system for performing a post processing operation (and vice versa). Multiple post processing operations can be performed, and multiple different materials can be printed on the same layer. The systems can increase the speed, resolution and diversity of materials printed on the same sample, and opens the possibilities for new designs.
CONDUCTIVE PASTE AND METHOD FOR PRODUCING CONDUCTIVE FILM USING SAME
After there is prepared a conductive paste which contains fine copper particles having an average particle diameter of 1 to 100 nm, each of the fine copper particles being coated with an azole compound, such as benzotriazole, coarse copper particles having an average particle diameter of 0.3 to 20 μm, at least one of a polyvinylpyrrolidone (PVP) resin and a polyvinyl butyral (PVB) resin, a chlorine compound, and a glycol solvent, such as ethylene glycol, the total amount of the fine copper particles and the coarse copper particles being 50 to 90% by weight, and the weight ratio of the fine copper particles to the coarse copper particles being in the range of from 1:9 to 5:5, the conductive paste thus prepared is applied on a substrate by screen printing to be preliminary-fired by vacuum drying, and then, fired with light irradiation by irradiating with light having a wavelength of 200 to 800 nm at a pulse period of 500 to 2000 μs and a pulse voltage of 1600 to 3800 V to form a conductive film on the substrate.
METHOD OF PROVIDING COMPARTMENT EMI SHIELDS ON PRINTED CIRCUIT BOARD USING A VACUUM
A method is provided for forming an internal electromagnetic interference (EMI) shield in a mold cap formed over a printed circuit board (PCB). The method includes forming a trench in the mold cap, the trench extending continuously from a first edge of the mold cap to a second edge of the mold cap, where the trench defines a trench pattern corresponding to desired locations of the internal EMI shield. The method further includes sealing an elastomeric pad on a top surface of the mold cap to form a channel, the channel including at least the trench formed in the mold cap; and filling the channel with a conductive epoxy using a vacuum configured to draw the conductive epoxy from a dispenser, connected to the first edge of the mold cap, through the channel to the second edge of the mold cap based on pressure differential.
Method for producing soft magnetic film laminate circuit board
A method for producing a soft magnetic film laminate circuit board having a soft magnetic film laminated on at least one side of a circuit board includes the steps of bringing a soft magnetic thermosetting film containing soft magnetic particles, having a porosity of 15% or more and 60% or less, and in a semi-cured state into contact with the one side of the circuit board and bringing the soft magnetic thermosetting film into a cured state by vacuum hot pressing.