An inkjet printing device includes a chamber having an imaginary centerline that divides a length of the chamber in the first direction into two halves, and a plurality of inkjet nozzles coupled to the chamber and receiving ink from the chamber, the inkjet nozzles being arranged in a plurality of columns along a first direction. The inkjet nozzles include a center column nozzle disposed adjacent to the centerline of the chamber and an outer column nozzle disposed farther from the centerline than the center column nozzle. The chamber includes a bump portion disposed farther from the centerline than the outer column nozzle, the bump portion including a bump on an inner surface of the chamber.

A method of manufacturing a display apparatus, the method includes supplying, from an ejector, a droplet onto a plane, capturing an image of the droplet, calculating a first luminance of a first area of the plane, the first area including a planar area of the droplet, and calculating a concentration of particles contained in the droplet based on the first luminance.

A window including a base substrate, which includes a transmission region and a bezel region in a plan view and includes a front surface and a rear surface that are opposite to each other in a thickness direction, a light-blocking layer, which is disposed on the rear surface of the base substrate and is overlapped with the bezel region, and a printing layer, which is disposed on the light-blocking layer and has a target surface, in which a barcode pattern is formed. The printing layer may have a chromatic color, and a width of the printing layer may be less than a width of the light-blocking layer.

A color conversion panel includes: a substrate; a plurality of color filters on the substrate; a partition wall on the substrate, and including a first opening, a second opening, a third opening, and a sub-opening; a first color conversion layer disposed in the first opening of the partition wall; a second color conversion layer disposed in the second opening of the partition wall; a transmission layer disposed in the third opening of the partition wall; an additional layer disposed in the sub-opening of the partition wall; and a spacer on the additional layer.

An electronic device includes a housing including a translucent ceramic member; and a printing film provided on the housing, wherein the printing film includes: an adhesive layer provided on the ceramic member; a base layer including a first surface facing the adhesive layer and a second surface opposite to the first surface; a printing layer provided on the first surface or the second surface of the base layer, the printing layer being viewable through the ceramic member and the adhesive layer; and a shielding printing layer facing the second surface of the base layer.

The present invention provides a manufacturing method of a color film substrate and the color film substrate. The manufacturing method includes providing a substrate; forming a first photoresist layer on a first sub-pixel region; forming a quantum dot layer on the substrate, wherein light emission colors of at least two types of quantum dots are respectively different from a light emission color of the first photoresist layer; forming a second photoresist layer and a third photoresist layer on the quantum dot layer in order; and quenching the quantum dot layer to invalidate unshielded quantum dots of the quantum dot layer.

A method for manufacturing a visual display assembly, comprising: providing a film of transparent material comprising a first surface and a second surface opposite the first surface, the first surface comprising an array of lenses comprising information that is arranged so as to be capable of providing multiple images when the images are viewed from different predetermined angles through the lenses; placing a screen-printing fabric in proximity to the first surface in order to form a pattern or printed image; applying a layer of ink or varnish to the screen-printing fabric allowing the ink or varnish to pass through for placement on a portion of the first surface; wiping the ink or varnish by means of a squeegee over the screen-printing fabric.

A window including a base substrate, which includes a transmission region and a bezel region in a plan view and includes a front surface and a rear surface that are opposite to each other in a thickness direction, a light-blocking layer, which is disposed on the rear surface of the base substrate and is overlapped with the bezel region, and a printing layer, which is disposed on the light-blocking layer and has a target surface, in which a barcode pattern is formed. The printing layer may have a chromatic color, and a width of the printing layer may be less than a width of the light-blocking layer.

A method for preparing a fluorescent polarizing film based on directional arrangement of quantum rods. In the method, an inkjet printing technology is used for printing quantum-rod ink having proper viscosity and surface tension on a substrate according to a preset pattern, and directionally arranging quantum rods to obtain a fluorescent polarizing film. The diameter and spacing of fluorescent lines obtained by the method can be controlled and adjusted according to parameter conditions such as a needle aperture, a printing speed, and a preset pattern. The prepared transparent fluorescent film with directionally arranged quantum rods has a high degree of polarization, can be prepared on a flexible substrate in a normal temperature environment, and has wide applicability.

A method for manufacturing an electromagnetic shielding film of reduced thickness and a simplified manufacturing process includes forming a conductive ink layer by inkjet printing, on a component to be shielded, forming an insulative ink layer on the conductive ink layer by inkjet printing, and sintering the conductive ink layer and the insulative ink layer to form an electromagnetic shielding layer and an insulative layer, thereby obtaining the electromagnetic shielding film.