Abstract:
A light source includes a light-source unit including a plurality of light emitting units and a power supply unit provided at a non-light emitting side of the light-source unit. The plurality of light emitting units are connected in parallel and include common connection electrodes. The common connection electrodes are electrically connected to electrode terminals of the power supply unit, respectively.
Abstract:
The present invention provides a printing head comprising a plurality of sub-heads each comprising a base and a plurality of diversion trenches provided in the base, and one end of each of the diversion trenches is connected to one of nozzles of the sub-head. Projections of all the diversion trenches on a first plane in a first projection direction are arranged at an equal interval, the first plane is a plane defined by an arrangement direction and a length direction of the diversion trenches in the sub-head, and the first projection direction is a moving direction of the printing head with respect to a printing surface during printing. The spacing of the diversion trenches in each of the sub-heads is greater than that of the projections of all the diversion trenches in the first plane on the first projection direction.
Abstract:
A method for preparing a display substrate, including forming a pixel defining layer (20) on a substrate (100), wherein forming the pixel defining layer (20) includes: forming a basic pattern (200) of the pixel defining layer on the substrate (100); the basic pattern (200) of the pixel defining layer comprises a first pattern (200a) of inorganic material, the first pattern (200a) being a top part of the basic pattern (200) of the pixel defining layer; subjecting the first pattern (200a) to a surface treatment with a self-assembled monomolecular layer to form a fluorinated monomolecular layer (210) on the surface of the first pattern, thereby forming the pixel defining layer (20). The lyophobic performance of the pixel defining layer formed by the method may be maintained for a long time.