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SMD led digital tube packaging structure

A technology of LED digital tube and packaging structure, applied in the field of LED digital display, can solve the problems of PVC film being easily affected by temperature, affecting the display effect of LED digital tube, and deformation of PVC film, so as to improve the display brightness and uniformity, improve the Heat dissipation and waterproof performance, good use stability

Inactive Publication Date: 2017-07-11
SHENZHEN KERUN OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now there is an empty packaging structure for LED digital tubes, which includes a PCB board, a plurality of LED chips fixed on the PCB board to form the pen segment of the digital tube, a reflective cup covering the plurality of LED chips, and the reflective cups. The cup is provided with a plurality of reflective cavities respectively containing an LED chip. The area corresponding to the reflective cup and each reflective cavity is provided with a light outlet, and a layer of PVC film with astigmatism is arranged at the light outlet. Although it saves colloid , which reduces the cost and reduces the weight of the LED digital tube, but the empty packaging structure of the LED digital tube has the following problems: the PVC film is easily affected by temperature, and if the temperature is too high, the PVC film will deform and warp phenomenon, which will affect the display effect of the LED digital tube, making it less stable

Method used

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  • SMD led digital tube packaging structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] figure 1 It shows a package structure of a chip LED digital tube in a preferred embodiment of the present invention, including a PCB board 10, a plurality of LED chip chips 20 mounted on the PCB board 10, used to cover the multiple A reflective cup 30 for a single LED patch chip 20 and a box body 100 for accommodating the PCB board 10, the reflective cup 30 is provided with a plurality of reflective cavities 40 for accommodating a single LED patch chip 20, the The area corresponding to each reflective cavity 40 of the reflecting cup 30 is provided with a light outlet, and the light outlet is provided with a layer of colloid 70 with astigmatism effect, and one side of the box body 100 is open, and the light outlet is facing the box body The open side of 100 is provided with a light enhancing film 50 bonded to the end surface of the reflection cup 30 and the glue 70 on the open side.

[0025] In the present invention, since the light outlet is provided with a colloid 70 ...

Embodiment 2

[0031]This embodiment provides a chip LED digital tube packaging structure, and its specific structure is consistent with that of Embodiment 1. In particular, the raw materials of the high-haze polycarbonate include 60-80 parts by weight of polycarbonate, 0.4 parts of sodium thiosulfate, 4 parts of diacetyl tartrate mono-diglycerides, 2 parts of sodium hexametaphosphate and 0.05 parts of cobalt oxide and 15 parts of ABS.

[0032] Further, the colloid is fixed on the light outlet by a high-strength adhesive; the raw materials of the high-strength adhesive include 8 parts by weight of acrylic resin, 55 parts of butyl acetate, 6 parts of isoprene, mannitol 4 parts, 0.8 parts of sodium hexametaphosphate, and 0.5 parts of isocitric acid.

[0033] Furthermore, the preparation method of the high-strength adhesive is to heat butyl acetate, sodium hexametaphosphate, and acrylic resin to 80°C, then use 40KHz ultrasonic vibration for 30 minutes, add the isoprene and mannitol, At the sa...

Embodiment 3

[0036] This embodiment provides a chip LED digital tube packaging structure, and its specific structure is consistent with that of Embodiment 1. In particular, the raw materials of the high-haze polycarbonate include 60-80 parts by weight of polycarbonate, 0.3 parts of sodium thiosulfate, 7 parts of diacetyl tartrate monoglyceride, 1 part of sodium hexametaphosphate and 0.25 parts of of cobalt oxide and 10 parts of ABS.

[0037] Further, the colloid is fixed on the light outlet by a high-strength adhesive; the raw materials of the high-strength adhesive include 10 parts by weight of acrylic resin, 30 parts of butyl acetate, 7 parts of isoprene, mannitol 1 part, 0.9 part of sodium hexametaphosphate, 0.2 part of isocitric acid.

[0038] Further, the preparation method of the high-strength adhesive is to heat butyl acetate, sodium hexametaphosphate, and acrylic resin to 80°C, then use 50KHz ultrasonic vibration for 30 minutes, add the isoprene and mannitol, At the same time, th...

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PUM

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Abstract

The invention provides a packaging structure for a patch LED digital tube. The packaging structure comprises a PCCB, a plurality of LED patch chips patched on the PCB, a reflecting cup for covering the plurality of LED patch chips, and a box body for storing the PCB, wherein the reflecting cup is provided with a plurality of reflecting cavities for storing single LED patch chips; a light outlet is formed in the area of the reflecting cup, corresponding to each reflecting cavity; the light outlets are provided with a layer of light diffusion gels; an opening is formed in one surface of the box body; each light outlet faces the surface with the opening, of the box body; a brightening film clung to the end surface of the reflecting cup and the gels is arranged on the surface with the opening. According to the packaging structure, the gels with the light diffusion effect are arranged at the light outlets, so that the influence of the temperature is avoided, and the use stability is high; the brightening film is arranged at the surface with the opening, of the box body and is matched with the gels and the reflecting cavities, so that the display brightness and uniformity of an effective display area can be greatly increased.

Description

technical field [0001] The invention relates to the field of LED digital display, and more specifically relates to a packaging structure of a patch LED digital tube. Background technique [0002] LED digital tube is a semiconductor light-emitting device. The basic unit is a light-emitting diode. Different pins input relative current to make it light up and display numbers. It is widely used in air conditioners, water heaters, refrigerators and other home appliances. [0003] The LED digital tube was developed in the 1960s and gradually moved towards marketization. Its packaging technology is also developing continuously. The traditional packaging structure of the LED digital tube adopts the integral setting technology, that is, the PCB board on which the LED chip is fixed Colloid is arranged between the reflecting cup and the amount of colloid is large, the cost is high, and the LED digital tube is relatively heavy. Now there is an empty packaging structure for LED digital ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09F9/33
CPCG09F9/33
Inventor 林明
Owner SHENZHEN KERUN OPTOELECTRONICS