59results about How to "Good alignment effect" patented technology

The invention provides a liquid crystal alignment agent for photo alignment, a liquid crystal alignment layer for photo alignment, and a liquid crystal display element. The liquid crystal alignment agent provided by the invention has a polyamide acid or a derivative thereof, the polyamide acid or the derivative thereof may be formed by reacting a mixer of cyclobutane tetracarboxylic dianhydride or tetracarboxylic dianhydride with specific aromatic diamine of an alkyl chain of a molecule with a carbon number larger than 4. With the adoption of the liquid crystal alignment agent, a liquid crystal alignment layer good in sensitivity of chemical change caused by light irradiation, excellent in alignment property of liquid molecule and high in optical transmittivity is formed. In addition, by applying the photo alignment layer to the liquid crystal display element, the liquid crystal display element with excellent display characteristics can be obtained.

The invention provides a liquid crystal aligning agent for photoalignment, a liquid crystal alignment film and manufacturing method thereof, a liquid crystal display device, a compound, and a polymer. The liquid crystal alignment film is manufactured through the manufacturing method including the following steps: a film forming step in which a liquid crystal alignment agent for photoalignment is coated on a substrate to form a coating, the liquid crystal alignment agent for photoalignment containing at least one selected from a group consisting of polyamic acid, polyamic acid ester and polyimide and its main chain having a polymer (C) of a structure represented by formula (1); and a light irradiation step in which light irradiation is performed on the coating to manufacture the liquid crystal alignment film. (In the formula (1), X1 is sulphur atoms or oxygen atoms. * represents bonding keys. At least one of the two * is bonded on an aromatic nucleus.)

The invention provides liquid crystal alignment agents for photo-alignment, liquid crystal photo-alignment layers, and liquid crystal displays using the same. The liquid crystal alignment agents contain tetracarboxylic dianhydride mixture including cyclopentane tetracarboxylic dianhydride, which is reacted with specific diamine to obtain polyamide acid or its derivatives. The liquid crystal alignment agents are applied to form a photo-alignment film with excellent alignment property and high light transmittance, because of light sensitivity of the chemical change caused by illumination. In addition, the photo-alignment film is applied in liquid crystal displays, the electrical characteristics required by liquid crystal alignment film is satisfied, the voltage maintaince ratio is high, the iron amount is little, the remained charge amount is little, etc.

The present invention aims to provide a liquid crystal aligning agent which can form excellent liquid crystal aligning performance and is excellently sealed with a liquid crystal layer, a liquid crystal alignment film formed by the liquid crystal aligning agent, phase difference film including the liquid crystal alignment film and manufacturing method thereof, a liquid crystal display device including the liquid crystal alignment film, and a polymer serving as a suitable ingredient of the liquid crystal aligning agent. The liquid crystal aligning agent provided by the invention contains A, i.e., an ingredient where the same or different molecule thereof contains optical aligning radicals and radicals containing polymerism double bonds. The ingredient A is optionally a polymer ingredient. The optical aligning radicals are optionally radicals containing a cinnamic acid structure. The liquid crystal alignment film is formed by the liquid crystal aligning agent. The phase difference film contains the liquid crystal alignment film. The phase difference film is optionally used in the liquid crystal display device. The liquid crystal display device contains the phase difference film.

The invention provides a photomask for photo alignment and a photo-alignment method. The photomask for photo alignment comprises a photomask body (2) and a plurality of light-transmitting patterns arranged on the photomask body (2), wherein the plurality of light-transmitting patterns are arrayed along the first direction (DY) line by line and are arranged along the second direction (DX) perpendicular to the first direction (DY); each light-transmitting pattern comprises a non-overlapping domain and overlapping domains, and the non-overlapping domain is not overlapped with adjacent photomasks during use; the overlapping domains are respectively positioned on the left side and the right side of the non-overlapping domain and are overlapped with the adjacent photomasks during use; the first direction (DY) is the translation forward direction of the photomask when the phototmask is used for exposure and alignment; one ends, towards the first direction (DY), of the light-transmitting patterns positioned in the overlapping domains are aligned to one ends, towards the first direction (DY), of the light-transmitting patterns positioned in the non-overlapping domain, so that the alignment effect can be improved, and the mura problem due to the fact that the unexposed domains or insufficiently-exposed domains exist when MMG products are aligned is avoided.

The invention relates to a polymerizable compound with general formula I, also provides a polymerizable liquid crystal composition containing the polymerizable compound and a liquid crystal display element containing the polymerizable compound, and especially provides a liquid crystal display element used for PS or PSA (polymer stabilized or polymer stably-aligned) liquid crystal displays. The polymerizable liquid crystal compound has the advantages of good solubility, good orientation effect, fast polymerization rate, complete polymerization and low residue, so the bad display problem can be greatly improved.

The invention relates to a straight seam welding special-shaped steel pipe forming process for an automobile anti-collision beam. The straight seam welding special-shaped steel pipe forming process for the automobile anti-collision beam comprises the following steps of: (1) uncoiling, unrolling a steel strip coil; (2) flattening, flattening the unrolled steel strip and conveying the flattened steel strip to the next station; (3) flat cutting and butt welding, flat cutting a head portion and a tail portion of the flattened steel strip respectively, and butt welding a tail of the steel strip material after the flat cutting with a head of the next steel strip material after the flat cutting; (4) pre-storing, feeding the butt welded steel strip into a movable sleeve storage bin; (5) forming, conveying the steel strip in the movable sleeve storage bin to a forming machine, and gradually bending into a tube blank to be welded according to a certain sequence; (6) high-frequency welding, pressing the opposite ends of the tube blank to form a certain opening angle, and then to perform high-frequency welding; (7) Water cooling, cooling the high-frequency welded steel tube to room temperatureby spraying; (8) special-shaped gradient sizing, sizing the water-cooled steel tube by a sizing ; (9) profile machining, cutting the sized steel tube into specific lengths.

The invention provides a photosensitive resin composite for LCD element. The composite has great alkali developing property, and when the composite is solidified, the liquid crystal alignment and voltage holding property are both excellent. The photosensitive resin composite, capable of developing in alkali condition for LCD element, includes: hydrophilic resin(A) with (methyl) acroloyl and carboxylic; polysiloxane(B); and free radical polymerization initiator(C). The aforesaid polysiloxane(B) is better to be with two or more hydrolytic alkoxyl.

The invention discloses a carton correction pressing and pasting device. The carton correction pressing and pasting device comprises a rack, a paper conveying shaft, paper conveying wheels fixedly connected to the paper conveying shaft, paper conveying belts surrounding the paper conveying wheels in a covering mode, and paper alignment devices arranged on the outer sides of the paper conveying belts. The paper alignment devices comprise paper alignment wheels which can rotate and paper aligning belts which surround the paper aligning wheels in a covering mode. The paper conveying wheels and the corresponding paper conveying belts and paper alignment devices are respectively arranged in two sets. The two sets of paper conveying wheels and the corresponding paper conveying belts and paper conveying devices are symmetrically arranged. A row of paper pressing wheels are arranged at the positions, above the corresponding paper conveying belt, of the inner side of each paper alignment device, the paper pressing wheels are in the shape of circular truncated cones, the edges of the top faces of the paper pressing wheels are round corners, the paper pressing wheels can be arranged on a paper pressing wheel fixing plate in a rotating mode, the paper pressing wheel fixing plate is fixedly connected to the rack, and the distance between the paper pressing wheel fixing plate and the paper conveying belts can be adjusted. Folded cartons can be transversely corrected and aligned, paper faces are smooth after correction, and the carton correction pressing and pasting device is widely applied to carton forming machines.

The invention discloses a method for predicting a tree growth trend in a power transmission line region based on a satellite technology. The method comprises the steps of obtaining a satellite remotesensing image of the power transmission line region by utilizing an SAR satellite remote sensing technology; processing the obtained satellite image; fusing the processed image with a power grid GIS,and determining a target area image; measuring the height of the same tree at different time points in the target area image through inversion; and comparing the heights of the trees at the same placeand different time points to estimate the growth trend of the trees. A tree growth trend monitoring system based on satellite wide-area remote sensing is constructed, basic information support is provided for tree barrier inspection of the power transmission line, the alignment of the inspection line is greatly improved, and safe and stable operation of the power transmission line is ensured.

The invention relates to a special-shaped steel tube forming technology for a semitrailer fence. The special-shaped steel tube forming technology for the semitrailer fence comprises the steps of first, uncoiling, wherein steel strip rolls are unfolded; second, leveling, wherein unfolded steel strips are leveled, and are conveyed to a next station; third, end flattening and butt welding, wherein the head portion and the tail portion of one leveled steel strip are cut to be flattened, and the material tail of the steel strip with ends cut to be flattened and the material head of a next steel strip with ends cut to be flattened are welded together; fourth, beforehand storage, wherein the steel strips subjected to butt joint are sent into a loop storage silo; fifth, forming, wherein the steelstrips in the loop storage silo are sent to a forming machine, and are sequentially bent into tube blanks to be welded; sixth, high efficiency welding, wherein high efficiency welding is carried out after the two ends, in butt joint, of every two adjacent tube blanks are pressed to form a certain open angle; seventh, water cooling, wherein the steel tubes subjected to high efficiency welding are cooled to the room temperature in a spraying manner; eighth, special shape gradual sizing, wherein the steel tubes subjected to water cooling are sized through a sizing unit; and ninth, profile machining, wherein the sized steel tubes are segmented into steel tube bodies of specific lengths.

The invention discloses a railway freight car bogie vibration damping device which can provide composite vibration damping force. A large-body incline wedge vibration damping part is arrange on that upper plane of the bottom of the inclined wedge groove at the end of the bolster and a spring vibration damping part is arrange on the lower plane of the bottom of the inclined wedge groove at the endof the bolster, and the inclined wedge vibration damping part and the spring vibration damping part are connected through a guide seat. The inclined wedge vibration damping part is arranged on the bottom of the inclined wedge groove at the end of the bolster. As that contact friction area of the incline wedge is large, A low damping spring is arranged between that incline wedge and the side frame,the friction resistance of the vehicle at full load is increased, An upper damp spring and a low damper spring are used in different vertical spaces, the advantage of that invention are simple structure, Compact and easy to manufacture, installation and maintenance, Maintenance, both no-load and full-load damping performance stable characteristics, It also has the characteristics of better control bogie rhombus deformation ability and better snake movement stability, which will play an important role in improving and improving the technical performance and running quality of the three-piece bogie of railway freight cars, reducing the wear of vehicle parts, and reducing the cost of vehicle manufacturing, operation and maintenance.

The invention discloses a supporting and protecting pile and a composed supporting and protecting row pile. The supporting and protecting pile comprises a precast concrete pile body with a reinforcingsteel bar cage composed of multiple vertical prestressed reinforcing steel bars and multiple transverse stirrups, and the cross section of the pile body is in a first rectangular shape with a first semicircular groove in one side. The supporting and protecting pile further comprises metal end plates at the two ends. Multiple through holes allowing the multiple vertical prestressed reinforcing steel bars to penetrate are formed in the metal end plates. Multiple guide insertion connection columns are arranged on one end plate, insertion connection blind holes which are in one-to-one correspondence with the multiple guide insertion connection columns are formed in the other end plate, horn mouth clamp rings with the large upper portions and the small lower portions are arranged in the holes,and each horn mouth clamp ring is composed of multiple metal elastic pieces. The long side of the supporting and protecting pile is close to the contact face of the foundation pit inner side around afoundation pit and the supporting and protecting pile and forms a ceaseless connection line extending in the length direction. The supporting and protecting pile and the composed supporting and protecting row pile have a small earth squeezing effect, are good in compactness, are large in contact area of the contact face of the foundation pit inner side around the foundation pit and the supportingand protecting pile, and are high in bending resistance.

The invention discloses a high-strength straight gear and a manufacturing method thereof. The high-strength straight gear comprises a gear ring and a gear hub, wherein the gear hub is arranged in thegear ring and provided with a fixing mechanism, the gear ring is provided with a fixing groove, the fixing mechanism is clamped in the fixing groove, the gear hub is provided with a positioning protruding part, the gear ring is provided with a positioning groove, and the positioning protruding part is arranged in the positioning groove; and the method adopts five steps of a, part manufacturing, b,fixing mechanism assembling, c, gear ring machining, d, gear assembling, and e, gear detection. According to the gear and the method, replacement time of the gear ring can be saved, the gear ring isconvenient to replace, the installation precision of the gear is ensured, slipping between the gear ring and the gear hub is avoided, and the reliability of the gear in the working process is ensured;and by means of the method, gear manufacturing can be facilitated, the gear quality is improved, time needed for gear manufacturing is saved, the production efficiency is improved, and the gear strength is ensured.

The invention discloses a method for improving the alignment effect of self-aligned liquid crystals and applies to a liquid crystal display panel. The liquid crystal display panel comprises an array substrate, a color filter substrate arranged in parallel to the array substrate and at an interval as well as a liquid crystal molecular layer clamped between the array substrate and the color filter substrate. According to the method, the liquid crystals are solidified by only powering up a common electrode in the color filter substrate, or a common electrode in the array substrate is arranged ina non-display area of the array substrate. Compared with the uncertainty and complexity by changing the material of a self-aligned liquid crystal system, the method for improving the alignment effectof the self-aligned liquid crystals has the advantages that the problem of poor alignment of self-aligned liquid crystal display can be effectively solved on the premise that the material of the self-aligned liquid crystal system keeps unchanged, and has great significance in further application of the self-aligned liquid crystal display.

The invention discloses a large-core-diameter polarization maintaining optical fiber countershaft welding device and a welding method thereof. The welding device is additionally provided with a high-efficiency linearly polarized light injection system, an output light collimation filtering system, an optical power and extinction ratio detection system and a data collection processing display system on the basis of a conventional large-core-diameter polarization maintaining optical fiber welding system. The welding method comprises the following steps of firstly, measuring an optical power value and an extinction ratio of the passive large-core-diameter polarization maintaining optical fiber to be welded; measuring an optical power value and an extinction ratio after the active large-core-diameter polarization maintaining optical fiber and the passive large-core-diameter polarization maintaining optical fiber are welded; through comparative analysis of the two groups of data, the polarization axis of the active large-core-diameter polarization maintaining optical fiber being continuously adjusted to be matched with the polarization axis of the passive large-core-diameter polarization maintaining optical fiber, and when comparison of the two groups of data reaches the optimal result, countershaft welding of the two large-core-diameter polarization maintaining optical fibers withdifferent appearance structures and inconsistent internal stress sources being completed. The welding device is advantaged in that the optical fiber is accurate in alignment, and the welded large-core-diameter polarization maintaining optical fiber is high in optical power and extinction ratio and good in communication quality.