Display screen COB printing steel mesh

Abstract

A display screen COB printing steel mesh comprises a printing steel plate body, the printing steel plate body is provided with a middle printing part and a side edge pressing installation part, the middle printing part is supported by the side edge pressing installation part to be arranged in a suspended mode, and printing round hole structures are evenly formed in the middle printing part of the printing steel plate body. And a base plate is arranged below the middle printing part of the printing steel plate body. The solder paste printing device is simple in structure, printing solder paste points which are covered in a suspended dripping mode can be even and symmetrical, and therefore printing stability and consistency are greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of COB packaging tools, and in particular relates to a COB printing steel mesh for a display screen. Background Art

[0002] COB (chip on board) technology is an emerging LED packaging technology. Different from the traditional SMD surface mount packaging, it integrates the light-emitting chip into the PCB board instead of soldering it one by one on the PCB. COB effectively improves the light color of the LED display, reduces risks and reduces costs.

[0003] In the prior art, the patent document with the announcement number CN 116367670 A discloses a steel mesh, a packaging method, and a printing machine. The substrate may have a light-emitting chip with a solid crystal, the light-emitting chip includes a light-emitting unit, and the periphery of the light-emitting chip has a sealing body covering the light-emitting chip. The steel mesh has a steel mesh flat plate and a protruding structure on one side of the steel mesh flat plate. After the steel mesh and the substrate are aligned, the protruding structure faces the substrate and is directly opposite to the light-emitting chip. In this way, the sealing body covering the light-emitting chip is embossed using the protruding structure. The above scheme is not suitable for the conventional method of printing solder paste to complete the solid crystal work. In the conventional method of printing solder paste, the printing steel mesh generally adopts the following method: Figure 3 The square hole form shown is generally a rectangular hole, but the square hole form of the steel mesh makes the solder paste dots uneven and asymmetrical in shape during the process of dripping and covering the printed solder paste in the air, resulting in technical problems such as poor stability and consistency. Utility Model Content

[0004] 1. Technical Problems Solved

[0005] In view of the deficiencies in the prior art, the utility model provides a display screen COB printing steel mesh with a simple structure, which can make the printed solder paste points covered by suspended dripping uniform and symmetrical, thereby greatly improving the printing stability and consistency.

[0006] 2. Specific technical solutions

[0007] A COB printed steel mesh for a display screen includes a printed steel plate body, wherein the printed steel plate body has a middle printing portion and a side pressing and mounting portion, wherein the middle printing portion is suspended by being supported by the side pressing and mounting portion, and a printed circular hole structure is evenly arranged in the middle printing portion of the printed steel plate body, and a substrate is arranged below the middle printing portion of the printed steel plate body.

[0008] As a preference: it also includes a pressing device and a mounting platform, the pressing device is arranged above the mounting platform, the side pressing mounting portion is arranged on the mounting platform, and the pressing device is pressed against the upper surface of the side pressing mounting portion of the printed steel plate body.

[0009] Preferably, a positioning boss structure is further provided on the mounting platform, and a positioning hole or a positioning groove is provided on the lower surface of the side pressing mounting portion of the printed steel plate body, and the positioning hole or the positioning groove cooperates with the positioning boss structure.

[0010] Preferably, the diameter of the printed circular hole structure is 70-100 mm.

[0011] Preferably, the diameter of the printed circular hole structure is 75 mm, 80 mm, 86 mm, 90 mm, 94 mm or 96 mm.

[0012] Preferably, the printed steel plate is made of stainless steel or nickel alloy nanomaterial.

[0013] Preferably, the printed steel plate is made of cast steel or tin-phosphor bronze.

[0014] The beneficial effects of the utility model are: the structure is simple, and the printed solder paste dots dripping in mid-air and covering the substrate can be uniform and symmetrical, thereby greatly improving the printing stability and consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the printed steel plate body of the utility model.

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the overall installation of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the steel mesh in the background technology.

[0018] In the figure: a printed steel plate body 1; a printed circular hole structure 2; a base plate 3; a pressing device 4; a mounting platform 5; a positioning boss structure 6; and a positioning hole 7. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a direct connection, it can be connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Example:

[0023] like Figure 1 , Figure 2 and Figure 3 As shown: a display screen COB printing steel mesh includes a printed steel plate body 1, the printed steel plate body 1 has a middle printing part and a side pressing and mounting part, the middle printing part is suspended by the support of the side pressing and mounting part, and a printing circular hole structure 2 is evenly opened in the middle printing part of the printed steel plate body 1, and a substrate 3 is provided under the middle printing part of the printed steel plate body 1. Solder paste is coated on the middle printing part of the printed steel plate body 1, so that the solder paste drips from the printing circular hole structure 2 in the air and covers the substrate to form evenly symmetrical printed solder paste points, thereby greatly improving the printing stability and consistency.

[0024] Furthermore, it also includes a pressing device 4 and a mounting platform 5. The pressing device 4 is arranged above the mounting platform 5, and the side pressing mounting part is arranged on the mounting platform 5, and the pressing device 4 is pressed against the upper surface of the side pressing mounting part of the printed steel plate body 1, thereby specifically completing the pressing and fixing work of the printed steel plate body 1 after being suspended in the air. The side pressing mounting part of the printed steel plate body 1 is arranged on both sides of the printed steel plate body 1, so the pressing device 4 and the mounting platform 5 are also divided into two parts corresponding to the position of the side pressing mounting part, and do not interfere with the middle printing part to complete the solder paste coating work.

[0025] Furthermore, a positioning boss structure 6 is also provided on the mounting platform 5, and a positioning hole 7 or a positioning groove is provided on the lower surface of the side pressing mounting portion of the printed steel plate body 1. The positioning hole 7 or the positioning groove cooperates with the positioning boss structure 6 to make the installation position of the printed steel plate body 1 more accurate, and positioning holes 7 or positioning grooves are respectively provided at the four corners of the lower surface of the side pressing mounting portion of the printed steel plate body 1, which is more stable and avoids displacement.

[0026] Furthermore, the diameter of the printed circular hole structure 2 is 70-100 mm, which is a better range for achieving stable and consistent dripping solder paste solder joints.

[0027] Furthermore, the diameter of the printed circular hole structure 2 is 75 mm, 80 mm, 86 mm, 90 mm, 94 mm or 96 mm, which is a diameter size that is more frequently used in production.

[0028] Furthermore, the printed steel plate body 1 is made of stainless steel or nickel alloy nanomaterial, which is a commonly used material.

[0029] Furthermore, the printed steel plate body 1 is made of cast steel or tin-phosphor bronze. Cast steel is a material with a relatively high cost and a relatively high effect, while tin-phosphor bronze is a material with a relatively low cost.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention shall be defined by the appended claims.

Claims

1. A display screen COB printing steel mesh, Features: The invention comprises a printed steel plate body (1), wherein the printed steel plate body (1) has a middle printing portion and a side pressing and mounting portion, wherein the middle printing portion is suspended by being supported by the side pressing and mounting portion, and a printing circular hole structure (2) is evenly arranged in the middle printing portion of the printed steel plate body (1), and a substrate (3) is arranged below the middle printing portion of the printed steel plate body (1).

2. The display screen COB printing steel mesh according to claim 1, Features: It also includes a pressing device (4) and a mounting platform (5), wherein the pressing device (4) is arranged above the mounting platform (5), the side pressing mounting portion is arranged on the mounting platform (5), and the pressing device (4) is pressed against the upper surface of the side pressing mounting portion of the printed steel plate body (1).

3. The display screen COB printing steel mesh according to claim 2, Features: A positioning boss structure (6) is also provided on the mounting platform (5), and a positioning hole (7) or a positioning groove is provided on the lower surface of the side pressing mounting portion of the printed steel plate body (1), and the positioning hole (7) or the positioning groove cooperates with the positioning boss structure (6).

4. The display screen COB printing steel mesh according to any one of claims 1 to 3, Features: The diameter of the printed circular hole structure (2) is 70-100 mm.

5. The display screen COB printing steel mesh according to claim 1, Features: The diameter of the printed circular hole structure (2) is 75 mm, 80 mm, 86 mm, 90 mm, 94 mm or 96 mm.

6. The display screen COB printing steel mesh according to any one of claims 1 to 3 or 5, Features: The printed steel plate body (1) is made of stainless steel or nickel alloy nanomaterial.

7. The display screen COB printing steel mesh according to any one of claims 1 to 3 or 5, Features: The printed steel plate body (1) is made of cast steel or tin-phosphor bronze.

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