38results about How to "Prevent white spots" patented technology

The invention relates to a resin capable of directly formed by laser and a preparation method thereof. The resin is prepared from the following raw materials in parts by weight: 93-97 parts of a matrix resin, 3-7 parts of a laser sensitive additive, and 0.1-0.9 part of other components. The preparation method comprises the following steps: weighting the raw materials in parts by weight: mixing the matrix resin, the laser sensitive additive and other components in a medium-speed mixer to mix for 20 minutes; and placing the obtained mixture into a twin-screw extruder, and then carrying out melting extrusion and granulating on the obtained product. Compared with the prior art, the resin disclosed by the invention mainly broadens the scope of laser sensitive additives which are no longer limited to spinel structured compounds, has small possibility of causing PC degradation, and can be prepared into various light-color products.

A hard-coated antiglare film is provided that has high hardness and excellent antiglare properties and can prevent white blur from occurring when viewed from oblique directions. The hard-coated antiglare film of the present invention includes a transparent plastic film substrate and a hard-coating antiglare layer that is formed of fine particles and a hard-coating resin on at least one surface of the transparent plastic film substrate. The hard-coating antiglare layer has a thickness of 15 to 30 mum, the fine particles have a weight average particle size of 30 to 75% of a thickness of the hard-coating antiglare layer, in the unevenness of the hard-coating antiglare layer surface that is formed by the fine particles, an average tilt angle thetaa is 1.0 DEG to 2.0 DEG , and an arithmetic average surface roughness Ra according to JIS B 0601 (1994 version) is 0.12 to 0.30 mum.

A solid-state imaging device comprises a substrate (30), an insulating layer (31) formed on top of the substrate (30), a semiconducting layer (32) formed on top of the insulating layer (31), and a silicon layer (33) formed on top of the semiconducting layer (32). The silicon layer (33) has a plurality of pixel units each including a photoelectric conversion unit (34) converting light to a signal charge and a circuit reading the signal charge, and the refractive index of the insulating layer (31) is lower than the refractive index of the semiconducting layer (32).

The invention relates to a casting technology of an automobile braking drum, in particular to a casting technology of a high-strength automobile braking drum, and belongs to the technical field of casting technology. During smelting of gray cast iron, copper and molybdenum elements are newly added besides carbon, silicon, manganese, phosphorus, sulfur and chromium elements contained in raw materials, and the weight percentages of the added elements are respectively 0.3 to 0.8 percent for copper and 0.1 to 0.2 percent for molybdenum, and the braking drum is formed through melting, casting, forming, annealing, sand cleaning and machining.

The invention relates to a technology for cleaning a solar monocrystalline wafer. The technology is characterized by comprising the following steps: carrying out spraying, degumming, tap-water washing, cleaning agent washing and pure water washing on a solar monocrystalline wafer in sequence; soaking the processed solar monocrystalline wafer in a mixed solution of ionized water and hydrofluoric acid for a while; then soaking in a mixed solution of ionized water and hydrogen peroxide for a while; carrying out pure water washing again; and finally drying. The technology is utilized to sufficiently wash chemicals, metal impurities and acid and base residuals away from the surface of the solar monocrystalline wafer, and prevent chromatic aberration due to hickie on the solar monocrystalline wafer when the solar monocrystalline wafer is textured, thus improving the yield and the product quality.

An alkaline stripping solution for photoresists comprises organic alcohol amine, a polar organic solvent, a corrosion inhibitor, and a surfactant. The alkaline stripping solution for photoresists canfully remove photoresist residue on the surface of a wafer at 30 DEG C to 100 DEG C without corroding wafer substrate material, especially a metallized layer, Ti/Ni/Ag layer, on the back of a wafer; after high-temperature annealing, the alkaline stripping solution for photoresists can effectively prevent Ti/Ni/Ag white spots on the back of a wafer and eliminate chromatic aberration.

The invention discloses a cross-regional e-commerce logistics sorting system which comprises a sorting and conveying assembly line, and an information acquisition module, a scanning processing unit and a plurality of sorting execution terminals are sequentially arranged on the sorting and conveying assembly line in the conveying direction of the sorting and conveying assembly line. The information acquisition module, the scanning processing unit and the plurality of sorting execution terminals are electrically connected with the comprehensive processing platform; the information acquisition module is used for acquiring appearance information of conveyed articles on the sorting and conveying assembly line and transmitting the information to the comprehensive processing platform; and the comprehensive processing platform analyzes and processes the collected appearance information and controls the scanning processing unit to perform dynamic adjustment. The positions of the information scanning recognition probe and the light source module are controlled and adjusted, the information scanning recognition probe and the light source module can correspond to the positions of logistics lists on articles when the articles of different sizes and specifications are sorted, recognized and scanned, the interval height is guaranteed, and the sorting accuracy is improved. And the acquisition sensitivity of the identification probe is obviously improved.

The invention relates to phosphate and a production process thereof and belongs to the technical field of dyeing and finishing of fabrics. The phosphate is characterized by being prepared from raw materials according to a specific ratio and by being prepared by the following steps of: adding fatty alcohol into a reaction kettle; cooling by introducing cold water into the reaction kettle under stirring; adding phosphorus pentoxide in batches; reacting for 4 hours by controlling the reaction temperature to be 80+2 DEG C; cooling to about 40 DEG C; and discharging and packaging to obtain the phosphate. Compared with the prior art, the phosphate has the characteristics of high wettability, permeability, dispersibility, emulsification decontaminability, antistatic property, anti-rust property, washability, no harm to fiber and the like. According to a sodium sulfite scouring and bleaching process, coagulation of other surfactants is inhibited and a white spot phenomenon is avoided.

The present invention relates to a liquid crystal display device employing a colour filter in which a specific liquid crystal composition, a specific pigment, and a specific compound are used. The present invention provides a liquid crystal display device which inhibits a reduction in the voltage holding ratio (VHR) of a liquid crystal layer, inhibits an increase in ion density (ID), and resolves problems related to display defects such as white spots, alignment unevenness, and burn-in. This liquid crystal display device is characterized in that a reduction in the voltage holding ratio (VHR) of the liquid crystal layer is inhibited, an increase in ion density (ID) is inhibited, and the occurrence of display defects such as burn-in is suppressed. Accordingly, the liquid crystal display device is particularly useful as an active-matrix-drive TN-mode, IPS-mode, polymer-stabilized IPS-mode, FFS-mode, OCB-mode, VA-mode, or ECB-mode liquid crystal display device. Furthermore, the liquid crystal display device is applicable as a liquid crystal display device such as a liquid-crystal TV, monitor, portable telephone, or smartphone.

A backlight unit capable of suppressing a white spot phenomenon by uniformly diffusing light emitted from a light source is provided. The backlight unit includes a light guide plate including a firstmain surface and a second main surface facing the first main surface, a concave light receiving part formed on the first main surface, a light quantity adjusting concave part formed on the second mainsurface, and a light quantity adjusting sheet on the light quantity adjusting concave part and the second main surface therearound. The backlight unit includes a substrate provided with a plurality of light emitting elements; a plurality of light beam control parts arranged on the substrate in a manner of being corresponding to the light emitting elements and transmitting light dispersed by the light source to the upper part uniformly; and a shielding film disposed between the luminous flux control members and reflecting at least a part of light emitted by the luminous flux control members.

The present invention relates to a liquid crystal display device which employs a color filter that uses a specific liquid crystal composition and a specific dye and/or pigment. The present invention provides a liquid crystal display device which is prevented from a decrease in voltage holding ratio (VHR) of a liquid crystal layer and an increase in ion density (ID), thereby solving the problems ofdisplay failure such as white spot, alignment unevenness and image burn-in. Since a liquid crystal display device of the present invention has such characteristics that a decrease in voltage holdingratio (VHR) of a liquid crystal layer and an increase in ion density (ID) are prevented and the occurrence of display failure such as image burn-in is suppressed, this liquid crystal display device isuseful as an IPS mode or FFS mode liquid crystal display device for active matrix driving, and is applicable to liquid crystal display devices such as a liquid crystal TV set, a monitor, a mobile phone and a smart phone.

The invention discloses a production method of alloy steel brake drums, and relates to the field of production technologies of automobile components. The method comprises the steps of molten steel raw material preparation, primary melting and carbon addition, material addition and slag removal, secondary melting, cast molding and stirring, and post-treatment. A small amount of chromium is added to realize graphite refinement, ferrite is reduced, and pearlite is increased; and small amounts of the molybdenum element and the copper element are added in the production process, so martensite transformation in the structure is reduced, white shading occurrence is prevented, brake slipping does not appear easily, a hard phase is avoided, and the stability and the safety of brakes are improved, thereby the method is worthy to be promoted.

The present invention provides a solid-state imaging apparatus which is capable of preventing electric charge from being injected from a semiconductor substrate while electric charge is being accumulated into photodiodes. The solid-state imaging apparatus includes a solid-state imaging device and a driving pulse control unit. The solid-state imaging device includes: a semiconductor substrate, photodiodes which are two-dimensionally formed on the semiconductor substrate, and vertical Charge-coupled devices (CCDs) having at least one arranged read-out gate and non-read-out gate for each of the photodiodes, the read-out gate being for reading out accumulated electric charge from the associated photodiode, and the non-read-out gate being not for reading out accumulated electric charge from the associated photodiode. The driving pulse control unit applies driving pulses sequentially to the respective read-out gates in order to change the read-out gates from stand-by LOW-voltage states to MIDDLE-voltage states, and apply a driving pulse for maintaining a LOW-voltage state of at least one of non-read-out gates adjacent to a last read-out gate in the order of the change among the non-read-out gates, during the change starting with a first read-out gate and ending with the last read-out gate.

The invention discloses a casting process of an automobile brake part. The casting process comprises the following steps: adding 0.5%-0.8% by weight of copper and 0.1%-0.3% by weight of chromium into raw materials including carbon, silicon, manganese, sulfur and phosphorus during gray cast iron smelting, melting, pouring, forming, annealing, removing sand, and machining to obtain the automobile brake part. According to the casting process, a small quantity of chromium is added, so that graphite is refined; iron is reduced and pearlite is added, so that martensite transformation in tissues can be reduced, white spots are prevented, slipping of the brake is hardly caused, and the stability and safety of the brake are improved. The actual measurement shows that the automobile brake part has the strength of 250-300MPa and the brake surface hardness of 187-250HB; the service life of the automobile brake part after the automobile brake part is mounted on an automobile is more than 90,000km, and the fatigue test frequency is more than 5,000 times.

The invention relates to a corrosion preventing method, and particularly relates to a method for protecting an aluminum pot from being corroded after cooking. The method includes adding an acid havingresistance to oxidation and resisting a high temperature of 121 DEG C or above into RO water used for aluminum pot cooking sterilization before the aluminum pot is cooked to adjust the pH value of the RO water to be 5.0-7.0, and controlling specific conductivity of the RO water to be 50 [mu]s/cm or below; or adding a corrosion and scale inhibitor the corrosion inhibiting rate of which increases along with the increase of the temperature into the RO water before aluminum pot cooking sterilization, with the mass ratio of the corrosion and scale inhibitor to the RO water being greater than 0 andnot more than 0.25%. Through controlling the pH value of the RO water for cooking sterilization to be 5.0-7.0 and the specific conductivity of the RO water to be 50 [mu]s/cm or below, or through adding the corrosion and scale inhibitor into the RO water used for aluminum pot cooking sterilization, white spots on the aluminum pot after high-temperature cooking sterilization, which are caused by quality of water in a sterilization kettle, can be effectively prevented.

The invention relates to a casting process of a vehicle brake drum, in particular to a casting process of a high-strength vehicle brake drum, and belongs to the technical field of casting processes. When gray cast iron is smelted, two elements of copper and molybdenum are newly added besides elements of carbon, silicon, manganese, sulfur and chromium in raw materials; 0.3-0.8 weight% of copper and 0.1-0.2 weight% of molybdenum are added; and the vehicle brake drum is produced by smelting, casting, molding, annealing, cleaning and machining.