Circuit board of transparent LED display screen and manufacturing process

A technology of LED display screen and manufacturing process, applied in the directions of printed circuits, printed circuits, circuit thermal devices, etc., can solve the problems of circuit board damage, short circuit, inability to effectively dissipate heat, and waterproof, and achieve excellent heat dissipation and waterproofing. The effect of easy damage and improved workability

Active Publication Date: 2021-12-31
广东合通建业科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems existing in the prior art that only an insulating film is applied on the surface of the copper-clad laminate in the production process of the circuit board, it cannot effectively dissipate heat and waterproof, and

Method used

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  • Circuit board of transparent LED display screen and manufacturing process
  • Circuit board of transparent LED display screen and manufacturing process
  • Circuit board of transparent LED display screen and manufacturing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A circuit board 1 of a transparent LED display, such as Figure 1~2 As shown, it includes a PCB board 2 and an LED lamp bead 3 arranged on one side of the PCB board 2; the PCB board 2 includes a substrate 4, wherein both sides of the substrate 4 are sequentially provided with a prepreg 5 and an etched copper clad laminate 6, The material of the substrate 4 is polyimide, the thickness of the prepreg 5 is 0.1 mm, the thickness of the substrate 4 is 0.3 mm, and the thickness of the etched copper clad laminate 6 is 0.2 mm; the surface of the PCB board 2 is coated with an insulating heat dissipation layer 7.

[0042] The LED lamp bead 3 includes one or more of white light bead, yellow light bead, blue light bead and red light bead.

[0043] The insulating and heat-dissipating layer 7 is prepared from modified polyimide, which is prepared by mixing polyimide resin and modifier in dimethylformamide, and then vacuum drying; wherein , the mass ratio of polyimide resin, modifie...

Embodiment 2

[0057] A circuit board 1 of a transparent LED display, such as Figure 1~2 As shown, it includes a PCB board 2 and an LED lamp bead 3 arranged on one side of the PCB board 2; the PCB board 2 includes a substrate 4, wherein both sides of the substrate 4 are sequentially provided with a prepreg 5 and an etched copper clad laminate 6, The material of the substrate 4 is polyimide, the thickness of the prepreg 5 is 0.1 mm, the thickness of the substrate 4 is 0.3 mm, and the thickness of the etched copper clad laminate 6 is 0.2 mm; the surface of the PCB board 2 is coated with an insulating heat dissipation layer 7.

[0058] The LED lamp bead 3 includes one or more of white light bead, yellow light bead, blue light bead and red light bead.

[0059] The insulating and heat-dissipating layer 7 is prepared from modified polyimide, which is prepared by mixing polyimide resin and modifier in dimethylformamide, and then vacuum drying; wherein , the mass ratio of polyimide resin, modifie...

Embodiment 3

[0073] A circuit board 1 of a transparent LED display, such as Figure 1~2 As shown, it includes a PCB board 2 and an LED lamp bead 3 arranged on one side of the PCB board 2; the PCB board 2 includes a substrate 4, wherein both sides of the substrate 4 are sequentially provided with a prepreg 5 and an etched copper clad laminate 6, The material of the substrate 4 is polyimide, the thickness of the prepreg 5 is 0.1 mm, the thickness of the substrate 4 is 0.3 mm, and the thickness of the etched copper clad laminate 6 is 0.2 mm; the surface of the PCB board 2 is coated with an insulating heat dissipation layer 7.

[0074] The LED lamp bead 3 includes one or more of white light bead, yellow light bead, blue light bead and red light bead.

[0075] The insulating and heat-dissipating layer 7 is prepared from modified polyimide, which is prepared by mixing polyimide resin and modifier in dimethylformamide, and then vacuum drying; wherein , the mass ratio of polyimide resin, modifie...

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Abstract

The invention discloses a circuit board of a transparent LED display screen and a manufacturing process. The circuit board comprises a PCB and LED lamp beads arranged on one side of the PCB. The PCB comprises a substrate, wherein prepregs and etched copper-clad plates are sequentially arranged on two side surfaces of the substrate; the surface of the PCB is coated with an insulating heat dissipation layer. Different from a conventional mode that a coating is too thick due to the fact that an insulating layer, a heat dissipation layer and a waterproof layer are arranged separately and the corresponding effect cannot be achieved due to poor combination between the layers, the insulating heat dissipation layer integrates insulation, heat dissipation and water resistance and has the advantage of being lighter and thinner, and the bonding problem between multiple layers does not need to be considered; the insulating heat dissipation layer has more excellent heat dissipation and waterproof performance, and can meet the market demand.

Description

technical field [0001] The invention relates to the field of LED display screens, in particular to a circuit board and a manufacturing process of a transparent LED display screen. Background technique [0002] The LED display industry is located in the downstream of the LED industry chain and is one of the three major LED terminal product lines. With the maturity of small-pitch LED display technology, the scale of display applications has maintained a relatively stable and rapid growth trend. The application of outdoor large-size display screens is moving indoors, and can be widely used in outdoor advertising, control rooms, video conferencing, and high-end display fields. The circuit board makes the circuit miniaturized and intuitive, and plays an important role in the mass production of fixed circuits and the optimization of the layout of electrical appliances. Most of the traditional LED displays are LEDs attached to the surface of the circuit board, and the circuit board...

Claims

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Application Information

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IPC IPC(8): H05K1/02H05K3/28G09F9/33
CPCH05K1/0209H05K3/28G09F9/33H05K2201/0154
Inventor 陈子安罗明晖
Owner 广东合通建业科技股份有限公司
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