290results about "Printed circuit liquid treatment" patented technology

The present invention provides systems and methods for creating interlayer mechanical or electrical attachments or connections using filaments within a three-dimensional structure, structural component, or structural electronic, electromagnetic or electromechanical component/device.

The invention provides a preparation method of a bonding sheet forming a circuit substrate. The method comprises a step of pretreating a glass fabric by use of a pretreatment glue solution of which the dielectric constant (Dk) is the same with or close to the Dk value of the adopted glass fabric. The invention also provides a bonding sheet and a circuit substrate prepared by the method. The preparation method of the circuit substrate provided by the invention does not need equipment transformation and adjustment, the cost is relatively low, the difference of the dielectric constant of the prepared circuit substrate in the longitudinal direction and latitudinal direction is less, and the problem of signal delay can be effectively solved.

A dispensing apparatus includes a frame having a gantry configured to provide movement in the X axis and Y axis directions, and first and second dispensing units coupled to the gantry and configured to dispense material onto a substrate. The second dispensing unit is coupled to the gantry by an automatic adjustment mechanism. The dispensing apparatus further includes a controller configured to control the operation of the gantry, the first dispenser, the second dispenser, and the automatic adjustment mechanism. The automatic adjustment mechanism is configured to move the second dispenser in the X axis and Y axis directions to manipulate a spacing between the first dispensing unit and the second dispensing. Methods of dispensing material on the substrate are further disclosed.

The invention discloses a copper surface roughening treatment solution, which comprises the following components: 98wt% of H2SO4 50 to 150g/L, volume concentration 30% of H2O2 40 to 60ml/L, a silane coupling agent 0.5 to 5g/L, dissolvable zinc salt 8 to 12g/L, a stabilizer 50 to 150g/L, a corrosion inhibitor composition 0.5 to 7.5g/L, and deionized water residual. Through treatment of the copper surface roughening treatment solution, a layer of dense and uniform honeycomb structure is formed on the copper surface, the structure can increase the specific surface area combined with semi-curing resin, and during a laminating process, a crosslinking reaction for resin curing is involved, a chemical bond is formed, and the binding force with the semi-curing resin is further enhanced.

In some embodiments, a method for integrated circuit fabrication includes removing oxide material from a surface of a substrate, where the surface includes silicon and germanium. Removing the oxide material includes depositing a halogen-containing pre-clean material on a silicon oxide-containing surface and sublimating a portion of the halogen-containing pre-clean material to expose the silicon on the surface. A passivation film is deposited on the exposed silicon. The passivation film may include chlorine. The passivation film may prevent contamination of the silicon surface by chemical species from the later sublimation, which may be at a higher temperature than the earlier sublimation. Subsequently, a remaining portion of the halogen-containing pre-clean material and the passivation film are sublimated. A target material, such as a conductive material, may subsequently be deposited on the substrate surface.

Highly conductive silver may be fabricated at room temperature using in-situ reactive silver precursor inks by microreactor-assisted printing without any post-processing. Reactive silver nanoinks, synthesized in-situ from the microreactor, may be directly delivered onto glass and polymeric substrates without any surface treatment to form a highly dense and uniform silver feature. The distribution of the reactive silver nanoinks can be controlled by adjusting the flow rate of the continuous flow. Silver lines may be fabricated using the in-situ reactive precursors delivered via a micro-channel applicator.

The invention discloses a fabrication method for a printed circuit board (PCB) with irregularity in a board surface. The fabrication method comprises the following steps of: A, uniformly applying a wet film onto the PCB with plating on the whole board to make pits and dents on the PCB filled; B, roasting the PCB coated with the wet film to dry the wet film; C, hot-pressing a layer of dry film on the wet film by using a film lamination machine; D, allowingthe PCB to stand for a certain time, and leading the wet film and the dry film to have a polymerization reaction by using ultraviolet light rays of an exposure machine so as to transfer a pattern to the PCB; and E, allowing the PCB to stand for a certain time after an exposure, developing the dry film and the wet film which are not exposed and polymerized by using an alkaliphotograph potion, and leading the dry film and the wet film which are exposed and polymerized already to be reserved on the board surface so as to form a circuit. By the fabrication method, the problems of a gap and an open circuit appearing after etching the PCB with irregularity in the board surface are solved, and the fabrication yield is enhanced.

A method of thin printed circuit board wet process consistency on the same carrier, and more particularly to a printed circuit board in the developing, copper plating, stripping, etching and other wet processes uses the same frame as a carrier from the beginning to the end of the wet process, such that the thin printed circuit board is conducted a continuous and automatic wet process to avoid disassembly, storage and transportation between each process. Moreover, when using the flame, the thin printed circuit board is smooth and flattening in the wet process for avoiding “water effect,” the effective area is not exposed to any mechanical members for preventing scratches, and there are point contacts between the thin printed circuit board and the frame for preventing chemical residue. Accordingly, the present invention can not only enhance the yield of the thin printed circuit board but also shorten the production time.

An exemplary system for processing a workpiece comprises a conveyor, a first liquid spraying device, a second liquid spraying device, and a substrate positioning device. The conveyor is configured for conveying the workpiece along a conveying direction. The first and second liquid spraying devices for spraying liquid onto the workpiece transported on the conveyor face the conveyor and are arranged along the conveying direction. The substrate positioning device for reorienting the workpiece on the conveyor is installed between the first and second liquid spraying devices and faces the conveyor.

The invention provides liquid homogenizing device for a printed circuit board. The device is used for treating the printed circuit board, the printed circuit board is provided with a to-be-treated surface and comprises a material carrying mechanism and a driving mechanism, and the material carrying mechanism is used for fixing the printed circuit board and enabling the plane where the printed circuit board is located to be perpendicular to the horizontal plane; and the driving mechanism is used for driving the material carrying mechanism to rotate around the rotating axis perpendicular to theto-be-treated surface. After the to-be-treated surface is soaked in the liquid medicine, the liquid medicine can uniformly flow to the area of the lower half part from the area of the upper half partunder the effect of gravity; the liquid medicine in each area sequentially flows downwards in the circumferential direction in the rotating process of the material carrying mechanism; and finally, uniform coverage of the liquid medicine in each area of the to-be-treated surface is realized, so that the pool effect during horizontal placement is avoided, excessive local area treatment caused by residual liquid medicine is prevented, and the condition of non-uniform treatment effect of the upper part and the lower part during vertical placement of the printed circuit board is avoided.

The invention discloses a nozzle device, which is especially used as a flow nozzle of an electroplating system for printed circuit boards passing horizontally. The nozzle arrangement comprises a longitudinal housing (2) having at least one fluid feed opening for feeding a treatment liquid to treat workpieces (such as printed circuit boards), and preferably a plurality of The slit-type fluid output opening (8) for releasing the treatment liquid. A fluid channel (5) is formed in the housing (2) for feeding treatment liquid from the fluid feed opening to the fluid output opening (8). In order to obtain as even as possible a flow rate of the treatment liquid at the fluid output opening (8), (a) the throughflow of the fluid channel (5) for the treatment liquid decreases continuously from the fluid feed opening in the longitudinal direction of the housing (2) , and/or (b) a storage chamber is provided before the fluid is output from the fluid output opening (8).

The present invention relates to the conveying and processing of circuit boards and circuit films, wherein the conveying is horizontal in wet chemical pass-through processing equipment. The slightly inclined conveyor rollers grip the object at the edge and tension it during conveying. In the case of thin circuit films, the required stretching tensions for an uninterrupted transport can be so great that the dimensional accuracy necessary for precision circuit technology is lost. According to the invention, the required delivery reliability is achieved with a moderate stretching tension by means of an electrolyte flow ( 8 ) directed mirror-symmetrically to the object ( 1 ) in the delivery direction ( 3 ). For circuit boards with blind vias, an additional flow of electrolyte (11) is directed mirror-symmetrically close to vertically at the object (1). In order to realize the flow through the additional through-holes, a static pressure difference according to Bernoulli's theorem develops in the electrolyte on both sides of the body.

The objective of the present invention is to provide a glycol-based cleaning agent for industrial use, which has excellent ability of removing various kinds of industrial dirt such as solder pastes, flux residues and various oils adhering to articles, while having no flash point and being recyclable (recyclable by distillation) at atmospheric pressure. The present invention relates to a recyclable azeotropic cleaning agent for industrial use, which is characterized by containing an azeotropic mixture that contains (A) a glycol-based solvent represented by general formula (1) R1-O-[-CH2-CH(X)-O]n-R2 (wherein each of R1 and R2 represents an alkyl group having 1-3 carbon atoms, n represents 2 or 3, and X represents a hydrogen atom or a methyl group) and having a boiling point of 160-230 DEG C at atmospheric pressure, (B) water, and if necessary, (C) a tertiary amine having a boiling point of 160-230 DEG C at atmospheric pressure. This recyclable azeotropic cleaning agent for industrial use is also characterized in that: the azeotropic mixture contains the component (A), the component (B) and the component (C) respectively in an amount of 5-35 wt%, in an amount of 65-95 wt% and in an amount of 0-30 wt%; and the azeotropic mixture has an azeotropic point of 90-100 DEG C at atmospheric pressure.

Embodiments of the present apparatus and methods for post CMP clean. More particularly, embodiments provide apparatus and methods for removing nano sized particles. One embodiment provides a method for cleaning a substrate. The method includes exposing the substrate to a viscoelastic fluid to remove small particles from the substrate. The viscoelastic fluid comprising a viscosity adjustor and an aqueous base.

In order to transport a flat material feedstock (21) in a system for the chemical and/or electro-chemical treatment of the material feedstock (21), in which the material feedstock (21) is transported in a transport plane in a transport direction (5), retaining means (22, 25) are attached to the material feedstock (21). The retaining means (22, 25) hold the material feedstock (21) at at least two points of an edge region of the material feedstock (21), said edge region being oriented in the transport direction (5) during the transport of the material feedstock (21). The retaining means (22, 25) are detachably coupled to a transport apparatus (41), which moves the retaining means (22, 25) in the transport direction in order to transport the material feedstock (21). At least during one transportation stage of the material feedstock (21), a force (6, 7) having a force component is applied to an area of the material feedstock (21), for example to the longitudinal edge region, said force component being located in the transport plane and extending transversely to the transport direction (5).

The invention relates to the technical field of circuit board dispensing, in particular to a circuit board glue printing device capable of automatically overturning. The device comprises a base and alifting mechanism, and the lifting mechanism comprises a lifting plate and a jacking assembly. The device further comprises a controller, a turnover mechanism and a dispensing mechanism, the turnovermechanism comprises a clamping assembly, a driving assembly and two carrying frames, and the dispensing mechanism comprises a transverse sliding assembly, a longitudinal sliding assembly and a glue injection assembly. A machining groove is formed in the lifting plate, the transverse sliding assembly is arranged at the top of the machining groove, and the longitudinal sliding assembly is arranged at the top of the transverse sliding assembly. The glue injection assembly is fixedly arranged at the top of the transverse sliding assembly, and the jacking assembly, the clamping assembly, the driving assembly, the transverse sliding assembly, the longitudinal sliding assembly and the glue injection assembly are all electrically connected with the controller. According to the circuit board glue printing device capable of automatically overturning and a working method, manual overturning is not needed, the overturning speed is high, meanwhile, the circuit board glue printing device can have arapid drying function and can guarantee the product quality.

A liquid treating apparatus includes an etchant discharging nozzle for discharging a treating solution (E) onto an upper surface of a film carrier tape for mounting an electronic component (T) from above and a treating solution contact prevention chamber disposed on an upstream side of a liquid treating start position (A) in which an etchant (E) discharged onto an upper surface of the film carrier tape (T) through an etchant discharging nozzle starts etching and serving to prevent the discharged solution from coming in contact with the film carrier tape (T) before the liquid treating start position (A). The apparatus also includes a liquid sealing lip member of a first infiltration preventing member and an upper lip component and a lower lip component of a second infiltration preventing member disposed in the treating solution contact prevention chamber.

A transfer apparatus includes a reservoir tank that stores a fluid, a supply device that supplies the fluid into the reservoir tank such that the fluid overflows from the reservoir tank, and a transfer device that transfers an object to be transferred while floating the object to be transferred on the fluid.

A method of accurately measuring the concentration of at least one of an aqueous cleaning agent and soil in an aqueous cleaning process which includes providing a source of near infrared light emitting useful amounts of light with wavelengths between approximately 0.8 μm and 2.5 μm, transmitting the near infrared light from the light source to a probe, contacting the probe with a cleaning bath sample such that one of the absorption and the reflection of the light at one or more wavelengths can be measured, transmitting the light that has interacted with the sample to a detector, measuring the change in light intensity at one or more wavelengths in the near infrared region using a near infrared detector, generating an electronic signal that is representative of the change in intensity, applying chemometric techniques to quantitatively determine the concentration of the cleaning agent and or soil, and outputting the measured cleaning agent or soil concentration. The light source is connected to the probe via a fiber-optic cable and the probe is connected to the detector via a fiber-optic cable.

The invention discloses an environment-friendly novel circuit board manufacturing method, which comprises the following steps: a copper-clad board is cut to the size of a circuit board, and the size is not too large so as to save materials; the copper-clad board is preprocessed, the oxide layer on the surface of the copper-clad board is ground off with fine abrasive paper so as to ensure that carbon powder on heat transfer paper can be firmly printed on the copper-clad board when the circuit board is transferred; the circuit board is transferred, the printed circuit board is cut into a propersize, and the surface printed with the circuit board is attached to the copper-clad board; the circuit board is corroded, the circuit board is put into corrosive liquid for corrosion, and the circuitboard after the copper film is completely corroded is taken out; the circuit board is drilled, different drill needles are selected according to the thickness of the pins of electronic components to drill the circuit board; and the circuit board is pretreated, powdered ink covering the circuit board is ground off through fine abrasive paper, the circuit board is cleaned through clear water, afterthe water is dried, rosin water is smeared on the face, provided with the circuit, of the circuit board, and rosin solidification is accelerated through a hot-air blower.

A cleaning apparatus is provided. This cleaning apparatus includes an inlet, an outlet, a first conveyance path, a second conveyance path, a cleaning unit disposed on the first conveyance path and configured to clean the target object in a non-contacting manner, and a drying unit disposed on the first conveyance path and configured to dry the target object in a non-contacting manner. The first conveyance path and the second conveyance path are vertically arranged side by side. The second conveyance path is positioned above the first conveyance path and connected with the outlet at an end point. The second conveyance path functions as a stocker configured to temporarily store the target object.