Screen printing mask and manufacturing method thereof

A screen printing mask for performing screen printing on a material to be printed on, comprising:

• a main mesh;
• a main resin layer provided on the main mesh by curing, through absorption of light, photocurable resin that is applied onto the main mesh, the main resin layer having at least one through-hole;
• and
• at least one additional net section provided on the main mesh by curing, through absorption of light, photocurable resin that is applied onto the main mesh, the at least one additional net section being disposed within the at least one through-hole of the main resin layer,
• wherein the at least one additional net section has:
• a first additional layer provided on the main mesh together with the main resin layer by curing, through absorption of light, photocurable resin that is applied onto the main mesh within the at least one through-hole of the main resin layer;
• and
• a second additional layer provided on the first additional layer by curing, through absorption of light, photocurable resin that is applied onto the first additional layer, and
• wherein:
• the main mesh is an ink-permeable screen material made of a woven fabric or metal wires,
• the main resin layer is an ink-impermeable stencil disposed on top of, and directly bound to, a first planar surface of the ink-permeable screen material and
• the at least one additional net section provided on the main mesh is at least one lattice of ink-permeable hollow cells disposed on top of, and directly bound to, the first planar surface of the screen material within the at least one through-hole of the main resin layer, the at least one lattice of ink-permeable hollow cells being configured to allow ink to pass through the main mesh to the material to be printed on,
• the ink-permeable screen material defines a plane,
• the at least one lattice of ink-permeable hollow cells has a first thickness in a depth direction that is perpendicular to the plane,
• the ink-impermeable stencil has a second thickness in the depth direction and
• the first thickness is greater than the second thickness,
• in a cross-section parallel to the main mesh that extends through the at least one additional net section, open spaces in the at least one additional net section comprise at least 70% of a total area of the at least one additional net section and vertical walls constituting the at least one additional net section comprise less than 30% of the total area of the at least one additional net section,
• the second thickness is 6 μm,
• the first thickness is 66 μm and
• the main resin layer and the vertical walls of the at least one additional net section are both made of the same cross-linked polymer, which is a different material from the screen material.

A screen printing mask for performing screen printing on a material to be printed on, comprising:

• a main mesh composed of a woven fabric or a metal wire screen;
• a main resin layer directly bound to the main mesh, the main resin layer forming a stencil that has at least one through-hole;
• and
• at least one additional net section disposed within the at least one through-hole of the main resin layer, the at least one additional net section being formed as at least one lattice of hollow cells that comprises a plurality of interconnected vertical walls,
• wherein each of the vertical walls of the at least one additional net section is composed of a first additional layer having a first side that is directly bound to the main mesh and a second additional layer that is superimposed on, and directly cross-linked to, a second side of the first additional layer,
• the main resin layer and at least the first additional layer of the at least one additional net section are composed of the same photo-cured resin,
• the main resin layer and the first additional layer of the at least one additional net section have the same thickness at an edge of the main resin layer that defines the at least one through-hole of the main resin layer,
• the main resin layer has a first surface and a second surface opposite of the first surface, the first surface being bound to the main mesh, and
• the second additional layer of the at least one additional net section protrudes beyond a plane defined by the second surface of the main resin layer.