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White-light Nixie tube display device and packaging technology therefor

A technology of display device and packaging process, which is applied in the field of digital tube packaging to achieve the effects of reducing the luminous angle, suppressing the overflow of blue light photons, and suppressing harmful gases

Pending Publication Date: 2018-09-18
绍兴职业技术学院
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  • Abstract
  • Description
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Problems solved by technology

This patent can realize the five sides of the chip to emit light, increase the light-emitting angle, improve the luminous intensity, and can effectively control the overall thickness of the device, but this method is not suitable for nixie tube display devices with small-pitch pen segments that need to suppress the light-emitting angle

Method used

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  • White-light Nixie tube display device and packaging technology therefor

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Embodiment Construction

[0037] In order to make the technical means of the present invention and the technical effects that can be achieved more clearly and more completely disclosed, an embodiment is provided hereby, and the following detailed description is given in conjunction with the accompanying drawings:

[0038] Such as figure 1 and figure 2 as shown, figure 1 It is a cross-sectional structure diagram of the assembled white light digital tube display device of this embodiment, figure 2 It is a schematic diagram of a single light source structure of a white light digital tube display device in this embodiment. A white light digital tube display device in this embodiment includes a PCB heat dissipation substrate 1, a light source 3 and a pad 2 arranged on the PCB heat dissipation substrate 1, and is located on The blue light chip 31 on the welding pad 2, the phosphor film 33 covered on the blue light chip 31, the mixed adhesive layer 34 located around the phosphor film 33 and the blue light...

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Abstract

The invention provides a white-light Nixie tube display device, and belongs to the technical field of Nixie tube packaging. The display device includes a PCB heat dissipation substrate, a plurality oflight sources disposed on the PCB heat dissipation substrate and a plurality of bonding pads disposed on the PCB heat dissipation substrate, and also comprises blue-light chips disposed on the bonding pads, fluorescent powder films overlying the blue-light chips, mixed adhesive layers disposed around the fluorescent powder films and the blue-light chips. The fluorescent powder films cover the surfaces of the blue-light chips by the adhesive layers, and the mixed adhesive layers are white nanoparticle mixed colloids. The display device has stable performances, large luminous intensity and highlight emission consistency. The packaging technology for the display device comprises the following steps: the cleaning, die bonding and testing of the PCB heat dissipation substrate cleaning, the preparation of a fluorescent powder mixed adhesive, the preparation and cutting of the fluorescent powder films, the spraying of the bonding layer, the pasting of the paste fluorescent powder films, thespraying of the mixed adhesive layers, and testing. The packaging technology can effectively inhibit the light-emitting angle of the chips, shortens the distances between stroke segments, saves the assembly step of a reflection cover, and controls the overall height of the display device.

Description

technical field [0001] The invention relates to a white light digital tube display device and its packaging process, in particular to a white light digital tube display device with high light output consistency, no reflective cover, and small pen segment spacing and its packaging process, belonging to the technical field of digital tube packaging . Background technique [0002] Nixie tube is a form of packaging structure of LED display screen. The most common and mature method of packaging white light nixie tube display devices at home and abroad is to coat yellow phosphor powder on the blue chip, so that blue light and yellow light are mixed and excited to generate white light. . The invention patent (see "A Dispensing Gland White Light Digital Tube Display Device and Its Production Process" with publication number 103000091A) describes a dispensing process, which effectively protects the oval fluorescent powder layer structure formed by the dispensing process. It not onl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/48H01L33/50H01L33/56G09F9/33
CPCH01L33/48H01L33/505H01L33/56G09F9/33H01L2933/0041H01L2933/0033
Inventor 盛立军
Owner 绍兴职业技术学院
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