297results about How to "Improve etching efficiency" patented technology

A plasma etching apparatus and a plasma etching method for conducting a plasma etching treatment for a substrate to be treated placed on one of parallel plate electrodes disposed oppositely to each other in a treatment chamber, wherein gas supplying device is used to supply a mixed gas including oxygen and a fluorine gas in the treatment chamber and the plasma discharge is conducted between the parallel plate electrodes under the condition that the product PL of a distance L[m] between the plate electrodes and the pressure P[Pa] of the mixed gas in the treatment chamber takes a value within 2.5[Pa.m] to 15[Pa.m] so as to efficiently perform an etching treatment, at a low cost, and in uniform.

The invention discloses a method for forming a semiconductor structure, which comprises the following steps: providing a substrate and forming a dielectric layer on the substrate; forming a mask layer provided with an opening for exposing the surface of the dielectric layer on the dielectric layer; carrying out a plasma etching on the dielectric layer by taking the mask layer as a mask, wherein a bias power source outputs a bias power in pulse mode, when the bias power resource is switched on, etching part of the dielectric layer to form an etch-hole, when the bias power resource is switched off, forming a polymer on the surface of the mask layer, repeating the process of switching on the bias power resource and switching off the bias power resource till a through hole is formed. When forming the through hole, the etching step and the polymer forming step are repeated so that the polymer can keep a certain thickness, therefore, in the entire etching process, the mask layer is protected from damaging or the damage rate is reduced, and the etching ratio of the dielectric layer relative to the mask layer is increased.

The invention discloses a laser processing method and system assisted by a water jet and a gas jet. According to the laser processing method, a laser beam is focused on the surface of a workpiece; a gas jet beam of which the diameter is greater than that of the focus point of the laser beam is coaxial with the laser beam; after the gas jet beam enters a cut slot, a water jet beam behind the gas jet beam also enters the cut slot. The center line of the water jet beam is in a plane formed by the center line of the laser beam and the cut slot; the intersection point of the center line of the water jet beam and the surface of the workpiece is 1-2 mm from the focus point of the laser beam. The system comprises a laser generating mechanism, a gas jet nozzle and a workbench, wherein the longitudinal center line of the jet hole of a water jet nozzle behind the gas jet nozzle is in the plane formed by the center line of the laser beam and the cut slot; a gas pump and a water pump are respectively connected with the gas jet nozzle and the water jet nozzle; water circulates through the water pump, the water jet nozzle, a working cavity above the workbench and a water tank. According to the invention, the water jet beam restrains gas expansion, reduces the heat effect of laser, takes away deposits, and improves the efficiency and quality of laser ablation, so that the invention achieves remarkable effects particularly in processing plates with thicknesses above 15 mm.

The invention relates to a glass etchant composition, more specifically, to a glass etchant composition forming a panel display. The glass etchant composition comprises 5-20 wt.% of HF; 10-50 wt.% of more than one inorganic acid selected from a group consisting of HSO, HPO, HCl, HCO, HNO and HClO; 0.5-10 wt.% of carboxylic acid; 0.01-5 wt.% of an inorganic nitrate salt as a first additive; and water residual. The glass etchant composition here provided brings high quality for transparency and surface roughness of glass processed, with stable etching capability, long service life and increased etching efficiency (etching sheet numbers).

The invention relates to a method for cleaning an alpha-Al2O3 monocrystal. According to the method, the problem that surface pollutants cannot be cleaned completely because the alpha-Al2O3 monocrystal has strong surface adsorbability and stable surface performance and is difficult to dissolve in the conventional method for cleaning the alpha-Al2O3 monocrystal is solved. The method for cleaning the alpha-Al2O3 monocrystal comprises the following steps of: soaking the alpha-Al2O3 monocrystal in ethanol and surfactant sequentially; and performing heat soaking treatment in a mixed solution of concentrated sulfuric acid and hydrogen peroxide, a mixed solution of ammonia water, hydrogen peroxide and water and a mixed solution of concentrated hydrochloric acid, hydrogen peroxide and water sequentially. The method for cleaning the alpha-Al2O3 monocrystal is a multi-step wet chemical cleaning method. By the method for cleaning the alpha-Al2O3 monocrystal, the pollutants on the surface of the alpha-Al2O3 monocrystal can be cleaned effectively and completely; the cleaned aluminum oxide monocrystal has high cleanliness; and the cleaning method is high in repeatability. Equipment for cleaning is simple, convenient to operate and easy to master; and the process is safe and pollution-free.

A capacitor for a memory device is formed with a conductive oxide for a bottom electrode. The conductive oxide (RuO_x) is deposited under low temperatures as an amorphous film. As a result, the film is conformally deposited over a three dimensional, folding structure. Furthermore, a subsequent polishing step is easily performed on the amorphous film, increasing wafer throughput. After deposition and polishing, the film is crystallized in a non-oxidizing ambient.

The faceplate to be etched is immersed in the etching solution. In etching procedure, the faceplate makes reciprocating type displacement in up/down or left/right along direction parallel to the faceplate to let etching solution contact surface of faceplate evenly so as to obtain even etching effect. Moreover, relative motion between the faceplate and etching solution makes etched out art are separated from surface rapidly so as to reach purpose of raising etching effect.

There is provided a substrate processing method capable of preventing the decrease in etching efficiency by positive ions and increasing the overall etching efficiency by using negative ions. The substrate processing method includes applying a plasma RF and a bias RF in the pattern of a pulse wave, respectively. The substrate processing method repeatedly performs the steps of: (3b) etching a substrate by positive ions in plasma by applying both the plasma RF and the bias RF; (3c) generating negative ions in a processing chamber by stopping the application of both the plasma RF and the bias RF; and (3a) attracting the negative ions to the substrate by applying the bias RF and stopping the application of the plasma RF. A duty ratio of the bias RF is set to be greater than a duty ratio of the plasma RF.

A light-emitting diode (LED) device includes a substrate and an epitaxial layer which is disposed on a surface of the substrate. A depression is disposed to a sidewall of the LED device, and a reflective layer is disposed to on least one portion of the depression. By the reflective layer disposed to the depression of the sidewall of the LED device, the light loss caused by the interface of the substrate and the epitaxial layer can be reduced, the light absorbed by the substrate can be decreased, and the angle of the light exiting from the LED device can be adjusted. A manufacturing method of the LED device is also disclosed.

The invention relates to a method for efficiently manufacturing a micro channel by combining femtosecond laser polarization selective ablation with chemical acid etching, and belongs to the technical field of femtosecond laser application. For the characteristics of crystalline state materials, the partial instant electronic dynamic state in the mutual action process of laser and the materials is adjusted by adjusting the laser polarization parameter and the included angle of the material crystal axis, materials in the laser machining area are triggered to be modified, and the machining efficiency and accuracy of the micro channel are improved with the assistance of chemical acid etching. The method is simple and efficient and has important study significance in the field of micro fluid machining.

The invention provides a manufacturing method of a micro-fluid channel. According to an adopted technical scheme, the manufacturing method comprises the following steps of adhering a substrate with a micro-channel structure to a substrate surface to be processed; and then continuously introducing an etching solution to the substrate surface by virtue of an external pump valve system so as to realize rapid processing of the micro-fluid channel. By using the manufacturing method of the micro-fluid channel provided by the invention, a manufacturing process is rapid and simple, an etching sacrificial layer does not need to be prepared, the usage amount of the etching solution is greatly reduced, meanwhile the etching efficiency is remarkably improved; the manufacturing method is especially suitable for rapidly manufacturing micro-fluidic chips with low cost and slight pollution on a large scale.

The invention provides a manufacturing method of a semiconductor device. The manufacturing method comprises the following steps: providing a semiconductor substrate and forming a gate structure on the semiconductor substrate; forming a groove at a part which is prone to formation of a source region/drain region in the semiconductor substrate; performing pre-amorphization injection on the semiconductor substrate to form an amorphous layer at the bottom of the groove; performing anisotropic wet etching on the semiconductor substrate containing the amorphous layer so that the side wall of the groove is concave towards the direction of the ditch of the device to form a sigma-shaped groove; annealing to crystallize the amorphous layer, and further performing secondary anisotropic wet etching to remove the amorphous layer; and performing epitaxial growth of a germanium-silicon stress layer in the sigma-shaped groove. According to the manufacturing method, the sigma-shaped groove used for an embedded germanium-silicon strain MOS (metal oxide semiconductor) device is formed, an etching barrier layer is formed by anisotropic wet etching through adopting the pre-amorphization injection during the process of manufacturing the groove, the micro-loading effect can be reduced and the etching efficiency can be improved.

The invention discloses a bulk silicon machining process based on silicon chip etching and puncturing, which comprises the following steps of preparing a patterned photoresist mask on the surface of a silicon chip; putting a metal film on the back surface of the silicon chip; adhering the metal film to a supporting chip by using vacuum oil, wherein the supporting chip is a silicon chip with an oxide layer on the surface; etching and puncturing the silicon chip to obtain a bulk silicon microstructure by using an inductively coupled plasma dry-etching system, wherein a staged etching method is adopted for inductive coupled plasma dry-etching, and comprises a plurality of etching stages each of which is alternately and cyclically implemented by three steps of passivation, bombardment and etching in an inductive coupled plasma machine, and along with the increasing of the etching depth, the bombardment intensity of the bombardment step in each etching stage is gradually enhanced; removing the photoresist mask and the metal film, and releasing the bulk silicon microstructure. According to the process, the selection ratio of photoresist, the etching depth and the perpendicularity of the sidewall of an etching groove can be effectively increased.

The invention relates to etching equipment, in particular to printed circuit board (PCB) etching equipment for production of an electronic display screen. The PCB etching equipment, which can be usedfor reducing labor intensity of a worker, is high in etching efficiency and is convenient to operate, for the production of the electronic display screen is provided by the invention. In order to solve the technical problem, the PCB etching equipment for the production of the electronic display screen comprises a left rack, a first pipeline, a first one-way valve, a support rod, a bottom plate, amobile device, a lifting device, a rotation device, a liquid transmission device and a second one-way valve, wherein the left rack is welded at a left side of the top of the bottom plate, and the liquid transmission device is arranged at a lower part of a right side of the left rack. By the PCB etching equipment, the rotation direction of an electric winding wheel is controlled, the effects of rapidly collecting and placing a PCB is achieved by matching of the electric winding wheel and a first spring, a rotation motor is controlled to rotate, a cam and a second spring are matched with each other, an etching liquid is stirred by rotating rotation blades, so that the PCB and the etching liquid are in full contact, and the etching efficiency is improved.

The invention provides a preparation method of an electrochemical sensor. The preparation method is characterized by covering the surface of a solid conductive film with a micro-fluidic chip, and continuously guiding etching fluid into the micro-fluidic chip so as to realize the rapid patterned etching of the conductive film. Since the etching liquid on the surface of the conductive film is continuously updated, the etching efficiency is remarkably improved; in addition, the volume of an etching cavity inside the micro-fluidic chip is small, so that the consumption of etching liquid is greatly reduced. The preparation method can be used for mass production of electrochemical sensors.

The invention relates to a liquid-spraying etching system and method of a semiconductor wafer. The semiconductor wafer liquid-spraying etching system comprises a carrying-platform device and a spraying device, wherein the carrying-platform device is used for fixing the semiconductor wafer when the surface to be etched of the semiconductor wafer faces downwards, and controlling rotation of the semiconductor wafer; the spraying device is placed below the carrying-platform device and comprises a plurality of spraying nozzles and a plurality of controlling pieces; all the spraying nozzles are used for spraying etching liquid on the corresponding positions of the surface to be etched on the semiconductor wafer upwards; the plurality of controlling pieces correspond to the plurality of spraying nozzles; and each controlling piece is used for controlling the spraying flow rate of the etching liquid of the spraying nozzle corresponding to the control piece. The liquid-spraying etching system and method have good etching uniformity and can improve the quality of products.

The invention discloses a plasma etching device and an etching method thereof. The plasma etching device comprises a processing chamber, a first electrode, a second electrode, a first gas supply end, a second gas supply end and an impulse control unit, wherein the first electrode is located in the processing chamber, provided with a platform for placing a wafer and electrically connected with at least one radio-frequency power supply; the second electrode is located in the processing chamber, faces the first electrode and is electrically connected with a direct-current power supply, and a first switch is arranged between the second electrode and the direct-current power supply; the first gas supply end feeds first gas into the processing chamber, and a second switch is arranged between the first gas supply end and the processing chamber; the second gas supply end feeds second gas into the processing chamber, and a third switch is arranged between the second gas supply end and the processing chamber; and the impulse control unit synchronously generates a first impulse signal, a second impulse signal and a third impulse signal for controlling the first switch, the second switch and the third switch respectively. The plasma etching device prevents accumulation of electric charge in a to-be-etched material during etching.

The invention provides a seasoning method and an etching method. The seasoning method, which is used for forming a polymer on the inner wall of a chamber in a seasoning process so as to enable the chamber to reach a working state required by the process, comprises the following steps: filling gases containing carbon and hydrogen into the chamber; motivating the gases containing carbon and hydrogen into a plasma body; and depositing a polymer layer on the inner wall of the chamber by utilizing the plasma body containing carbon and hydrogen. With the seasoning method, the time of the seasoning process can be reduced, the efficiency of the seasoning process is improved; besides, the cost of the seasoning process can be reduced, and the production cost of the whole etching process can be reduced.

The invention discloses a method for electrolytically etching pictures and text on a metal plate and a device thereof. The method comprises the following steps: putting a metal plate with an electrolytically etched picture and text layer on the upper surface on a conveyer roller and moving to an electrolytic region with an upper negative electrode and a lower positive electrode which are arranged to be staggered in the vertical direction; simultaneously jetting electrolyte in a gap between the upper surface of the metal plate and the negative electrode along the moving direction of the metal plate and a gap between the lower surface of the metal plate and the positive electrode; and applying voltages on the positive electrode and the negative electrode so that the electrolytic etching region on the upper surface of the metal plate is electrolytically etched. The device comprises a stand, a motor, a transmission device, the conveyer roller, the positive electrode, the negative electrode, an electrolyte pipeline, an upper nozzle and a lower nozzle. The invention hardly generates short circuits and has high etching efficiency, high radiation speed and reasonable structure.