Abstract: A nanoscale positioning apparatus with a large stroke and multiple degrees of freedom and a control method thereof are provided. The nanoscale positioning apparatus includes a base, a plurality of parallel branch chain mechanisms and a working table. Each of the parallel branch chain mechanisms includes an electric cylinder, a micro-motion drive mechanism, a laser interferometer, a grating measuring device, a self-locking upper hinge and a self-locking lower hinge. The top of the base is connected to one end of the electric cylinder through the self-locking lower hinge. The other end of the electric cylinder is connected to one end of the micro-motion drive mechanism. The other end of the micro-motion drive mechanism is connected to the bottom of the working table through the self-locking upper hinge. The positioning apparatus has multiple degrees of freedom, and realizes multi-degree-of-freedom arbitrary position adjustment of the working table through parallel branch chain mechanisms.

Abstract: The present invention discloses novel polymorphs I, II, and V of a [2-(4-(3-trifluoromethyl-benzyl)piperazin-1-yl)ethyl]-2,3-dihydro-1H-benzimidazol-2-one and a preparation method and application thereof. The polymorph I is a trihydrate crystal, the polymorph II is an anhydrous crystal, and the polymorph V is an anhydrous crystal. When compared with an existing crystal form, the novel polymorphs provides significant advantages in terms of solubility and preparation techniques.

Abstract: The present disclosure may disclose a new crystal form D of 8-fluoro-2-{4-[(methylamino)methyl]phenyl}-1,3,4,5-tetrahydro-6H-azepino[5,4,3-cd]indol-6-one ((1S,4R)-7,7-dimethyl-2-oxobicyclo[2.2.1]hept-1-yl) methanesulfonic acid salt, preparation method therefor and a medicinal use. Compared to the existing crystalline forms, this new crystalline form has clear advantages with respect to solubility, stability, and the preparation process.

Abstract: The present disclosure discloses crystal forms A, B, and C of trans-N-{4-[2-[4-(2,3-dichlorophenyl)-piperazine-1-yl]-ethyl]-cyclohexyl}-N?,N?-dimethylurea hydrochloride, a preparation method, and a medicinal use thereof. Compared to the existing crystalline forms, the new crystalline forms have clear advantages with respect to solubility, stability, and the preparation process.

Abstract: A touch screen, a manufacturing method thereof, a touch display panel, and a display device are provided. The touch screen includes: a base substrate, and a conductive layer over the base substrate, the conductive layer includes: touch electrodes having a metal mesh, and dummy patterns having a metal mesh, wherein the touch electrodes are insulated from the dummy patterns, and the metal mesh of each of the touch electrodes comprises a plurality of closed patterns; and each of the dummy patterns comprises at least one dummy sub-pattern, the at least one dummy sub-pattern are insulated from each other, and the metal mesh of each of the at least one dummy sub-pattern comprises at least one closed pattern.

Abstract: The present disclosure is related to a shift register unit. The shift register unit may include a shift register circuit and N output control circuits, wherein N is an integer larger than or equal to 2. The shift register circuit may be respectively electrically connected with an input signal terminal, a clock signal terminal, and an output node. Among the N output control circuits, an i-th output control circuit may be respectively electrically connected with an i-th control signal terminal of N control signal terminals, the output node, and an i-th gate line of N gate lines. i is a positive integer of smaller than or equal to N. The shift register unit may be configured to sequentially output a gate driving signal to the N gate lines respectively under control of the N control signal terminals.

Abstract: The present disclosure provides a display screen and a display apparatus, pertaining to the field of display technologies. The display screen includes: a backplane, a printed circuit board and a fixing adhesive, wherein the printed circuit board is fixed to the backplane by the fixing adhesive.

Abstract: The present invention discloses novel polymorphs I, II, and V of a [2-(4-(3-trifluoromethyl-benzyl)piperazin-1-yl)ethyl]-2,3-dihydro-1H-benzimidazol-2-one and a preparation method and application thereof. The polymorph I is a trihydrate crystal, the polymorph II is an anhydrous crystal, and the polymorph V is an anhydrous crystal. When compared with an existing crystal form, the novel polymorphs provides significant advantages in terms of solubility and preparation techniques.

Abstract: A backlight module includes: a light guide plate, having a light incoming side and a light outgoing face; a rubber frame, arranged at four edges of the light guide plate; an optical film, arranged on the light outgoing face of the light guide plate and having four edges, where at least a portion of at least one edge among the four edges of the optical film exceeds an edge of the light guide plate and is placed on the rubber frame such that the rubber frame supports the optical film; and a spacer, where the spacer is located on the portion of the at least one edge of the optical film that is placed on the rubber frame and are located on a surface of the optical film away from the rubber frame, and the spacer is used to support a display panel on the backlight module.

Abstract: The present disclosure is related to a shift register unit. The shift register unit may include a shift register circuit and N output control circuits, wherein N is an integer larger than or equal to 2. The shift register circuit may be respectively electrically connected with an input signal terminal, a clock signal terminal, and an output node. Among the N output control circuits, an i-th output control circuit may be respectively electrically connected with an i-th control signal terminal of N control signal terminals, the output node, and an i-th gate line of N gate lines. i is a positive integer of smaller than or equal to N. The shift register unit may be configured to sequentially output a gate driving signal to the N gate lines respectively under control of the N control signal terminals.

Abstract: The present disclosure may disclose a new crystal form D of 8-fluoro-2-{4-[(methylamino)methyl]phenyl}-1,3,4,5-tetrahydro-6H-azepino[5,4,3-cd]indol-6-one ((1S,4R)-7,7-dimethyl-2-oxobicyclo[2.2.1]hept-1-yl) methanesulfonic acid salt, preparation method therefor and a medicinal use. Compared to the existing crystalline forms, this new crystalline form has clear advantages with respect to solubility, stability, and the preparation process.

Abstract: The present disclosure discloses crystal forms A, B, and C of trans-N-{4-[2-[4-(2,3-dichlorophenyl)-piperazine-1-yl]-ethyl]-cyclohexyl}-N?,N?-dimethylurea hydrochloride, a preparation method, and a medicinal use thereof. Compared to the existing crystalline forms, the new crystalline forms have clear advantages with respect to solubility, stability, and the preparation process.

Abstract: The present disclosure provides a display screen and a display apparatus, pertaining to the field of display technologies. The display screen includes: a backplane, a printed circuit board and a fixing adhesive, wherein the printed circuit board is fixed to the backplane by the fixing adhesive.

Abstract: A plurality of new crystal Forms I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII and XIV of 6-Acetyl-8-cyclopentyl-5-methyl-2-(5-piperazin-1-yl-pyridin-2-ylamino)-8H-pyrido[2,3-d]pyrimidin-7-one, as well as a preparation method and medicinal use therefor are disclosed in the present disclosure. Crystal Form VIII is a semi-hydrate crystal Form. Compared to crystal Forms of the prior art, these new crystal Forms are markedly superior in respect of dissolution, stability, and the preparation process.

Abstract: A polymorph III of N-(4-fluorobenzyl)-N-(1-methylpiperidin-4-yl)-N?-[4-(2-methylpropoxy)phenylmethyl]urea tartrate, a preparation method therefor, and a medicinal use. Compared to the existing crystalline forms, the new crystalline form has clear advantages with respect to solubility, stability and the preparation process.

Abstract: Disclosed are a new polymorph II, crystal form A and B of 9-[(R)-2-[[(S)-[[(S)-1-(isopropoxycarbonyl)ethyl]amino]phenoxyphosphinyl]methoxy]propyl]adenine fumarate, and preparation methods and pharmaceutical use thereof. The crystal form II is a hemi-fumarate; the crystal form A is a mono-fumarate; and the crystal form B is a sesqui-fumarate. Compared with the existing crystal form, the new crystal forms have obvious advantages in solubility, stability and preparation process.

Abstract: A touch screen, a manufacturing method thereof, a touch display panel, and a display device are provided. The touch screen includes: a base substrate, and a conductive layer over the base substrate, the conductive layer includes: touch electrodes having a metal mesh, and dummy patterns having a metal mesh, wherein the touch electrodes are insulated from the dummy patterns, and the metal mesh of each of the touch electrodes comprises a plurality of closed patterns; and each of the dummy patterns comprises at least one dummy sub-pattern, the at least one dummy sub-pattern are insulated from each other, and the metal mesh of each of the at least one dummy sub-pattern comprises at least one closed pattern.

Abstract: A backlight module includes: a light guide plate, having a light incoming side and a light outgoing face; a rubber frame, arranged at four edges of the light guide plate; an optical film, arranged on the light outgoing face of the light guide plate and having four edges, where at least a portion of at least one edge among the four edges of the optical film exceeds an edge of the light guide plate and is placed on the rubber frame such that the rubber frame supports the optical film; and a spacer, where the spacer is located on the portion of the at least one edge of the optical film that is placed on the rubber frame and arc located on a surface of the optical film away from the rubber frame, and the spacer is used to support a display panel on the backlight module.

Abstract: There are provided a backlight module, a display apparatus and an electronic drawing board. The backlight module includes a light guide plate, a printed circuit board located on a side of the light guide plate facing away from a light exit side thereof and having a wiring protrusion protruding from a surface of the printed circuit board. A shim is disposed between the light guide plate and the printed circuit board and configured to partially compensate a step difference formed due to the wiring protrusion.

Abstract: A display apparatus including a backlight module is disclosed. The backlight module includes a back plate and a rubber frame located at a periphery of the back plate. The back plate has a protrusion facing towards the rubber frame. The rubber frame has a snap slot facing towards the back plate. The back plate and the rubber frame are connected to each other through meshing between the protrusion and the snap slot.