30results about How to "Improve evaporation yield" patented technology

The invention discloses a substrate evaporation alignment system and a method and device for measuring the position of monitoring pixels. The method includes: measuring the edge shadow and position of monitoring pixels obtained by evaporation on the substrate; Shadow, determining the edge climbing distance of the monitoring pixel; correcting the measured position data according to the edge climbing distance. The application of the present invention can improve the measurement accuracy of the monitoring pixel position, improve the accuracy of determining the vapor deposition alignment compensation amount of the OLED substrate, and thereby improve the vapor deposition yield of the OLED substrate.

The invention provides a mask substrate, a mask assembly, a display panel and a display device. The mask substrate includes a half-etched area and a non-etched area, the non-etched area is arranged around the half-etched area, and the half-etched area has a plurality of openings arranged in an array, and any opening to the non-etched area The minimum distance is not less than the distance between any two adjacent openings. In the mask substrate proposed by the present invention, the distance from the opening close to the non-etching region to the non-etching region is lengthened, so that the position where the mask substrate and mask strips are prone to wrinkles in a stretched state is far away from the opening, ensuring While improving the uniformity of the mask substrate, it will also reduce the interference effect of the deformation of the mask substrate under stretching on the mask strip, thereby improving the yield rate of the evaporation product produced by the mask component.

The embodiment of the invention provides a mask plate and a production method thereof. Fully-etched areas comprise a plurality of opening units, wherein a semi-etched area is arranged around each opening unit. According to the mask plate, through a manner of setting semi-etched areas around the opening units, evaporation residual particles adhered to a glass substrate fall into the range of the semi-etched areas of the mask plate in the transmission process of the glass substrate, so that the occurrence of the situation that the mask plate or the evaporation product is damaged by the residualparticles in the evaporation process is effectively avoided; and the evaporation yield is effectively improved.

The invention discloses a thermoplastic resin composition capable of being formed by direct evaporation and a preparation method thereof. The composition comprises the following components in part by weight: 1 to 70 parts of thermoplastic resin, 10 to 60 parts of rubber grafted styrene resin copolymer, 0.2 to 5.0 parts of extracting agent, 0.1 to 2.0 parts of lubricant and 0.1 to 1.0 part of antioxidant. The preparation method of the composition comprises the following steps of: carrying out premixing on the extracting agent and the rubber-grafted styrene resin copolymer in a spray mode in a low speed mixer, adding the premixed materials, the thermoplastic resin, the lubricant and the antioxidant from a double-screw extrusion charging hole with a degasser and carrying out melt mixing at a temperature of 200 to 280 DEG C to obtain melt; and applying a low pressure of below 300mbar to a degassing region, ensuring the melt to stay in the degassing region for 20 to 50s, extruding and cooling to obtain the thermoplastic resin composition. According to the resin composition disclosed by the invention, the problems of fogging of the surface, forming precipitation, rugged surface and the like of a formed product are solved and the method is particularly suitable for the products which can be formed by directly evaporation.

An evaporation device and its evaporation method, and display device manufacturing equipment, the evaporation device is used for substrate evaporation, one side of the substrate is provided with a mask plate, the evaporation device includes: a magnetic adsorption layer and a thermal Sensitive layer, wherein the thermosensitive layer is arranged on one side of the magnetic adsorption layer, the thermosensitive layer is arranged between the magnetic adsorption layer and the side of the substrate away from the mask plate, and the The thermosensitive layer is configured to adjust the distance between the mask plate and the magnetic adsorption layer. During the evaporation process of the substrate, when the mask plate used for evaporating the substrate generates wrinkles in a certain area, the temperature of the heat-sensitive layer in the corresponding area will be changed, and the heat-sensitive layer adjusts its own thickness according to the temperature change to reduce The distance between the magnetic adsorption layer and the mask plate in this area can eliminate the wrinkle problem of the mask plate and improve the evaporation yield of the substrate.

The invention relates to the technical field of mask plate production, and discloses a mask plate conveying device and a conveying method. The handling device includes a contact plate, a magnetic part and a supporting column, the contact plate and the magnetic part are arranged oppositely, the contact plate includes a bonding surface for bonding the mask plate, and the supporting column connects the contact plate and the magnetic part so that the bonding surface is located within the magnetic field formed by the magnetic part. Through the above method, the present invention can ensure sufficient flatness of the mask plate.

The invention relates to a drying device used for drying a mask. The drying device comprises a drying chamber and is characterized in that air blades are arranged at the port of the drying chamber, and air outlets used for discharging air flow generated by the air blades are arranged at positons, close to the bottom of the drying chamber, of the lateral walls of the drying chamber. The drying device has the advantages that the generation of rebounded air flow is reduced by the air outlets, so that the influence of dust raised by the rebounded air flow on the mask is reduced, and product evaporation yield is increased.

The invention relates to a mask plate, a mask assembly and a method for making the mask plate. The mask plate includes a mask substrate and a shielding layer. An evaporation area is arranged on the mask substrate. The evaporation area includes an effective evaporation area and an effective evaporation area. The invalid evaporation area, the effective evaporation area corresponds to the display area of ​​the display panel, the invalid evaporation area corresponds to at least the slotted area of ​​the display panel, and multiple evaporation openings are distributed in the effective evaporation area and the invalid evaporation area The shielding layer is arranged on the surface of the mask substrate and shields the evaporation opening in the invalid evaporation area. The above-mentioned mask plate is used for the evaporation display panel. For the mask substrate, not only the effective evaporation area corresponds to the display area of ​​the special-shaped screen, but also the gap outside the effective evaporation is filled by the invalid evaporation area. The edge of the evaporation area is evenly stressed, which can prevent the mask substrate from wrinkling when stretching the net, thereby preventing color mixing of the final formed display panel and improving product yield.

The present application relates to the field of display technology, in particular, to a mask device, which includes a frame structure, at least one mask plate and at least one shrink sheet, the mask plate is connected to the frame structure; the shrink sheet is connected to The mask plate is connected to the frame structure, and / or the shrink sheet is adjacent to the mask plate; wherein, the shrink sheet can apply a pulling force to the mask plate during the shrinking process, thereby reducing The amount of wrinkles and sags of the mask plate to improve the evaporation yield.