CN214956875U

CN214956875U - Green light display device for night vision imaging system and display panel thereof

Info

Publication number: CN214956875U
Application number: CN202120623852.1U
Authority: CN
Inventors: 李晓东; 金本坤; 邓启爱
Original assignee: Shenzhen Avic Hangxing Night Vision Technology Co ltd
Current assignee: Shenzhen Avic Hangxing Night Vision Technology Co ltd
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2021-11-30
Anticipated expiration: 2031-03-24

Abstract

The utility model provides a green glow display device and display panel that night vision imaging system used, the green glow display device that night vision imaging system used includes: the LED chip set comprises a first LED chip with the grain size of 495 and the grain size of 500nm and a second LED chip with the grain size of 538 and the grain size of 542nm, the positive electrode bonding pad and the negative electrode bonding pad are separately arranged at two ends of the support body, and the LED chip set is arranged on the negative electrode bonding pad and is respectively connected with the positive electrode bonding pad and the negative electrode bonding pad. The utility model discloses utilize the spectrum of two LED chips to synthesize its standard range requirement that sets up the position and satisfy night vision imaging system, and then realized simple structure, and accord with the green glow display device that night vision imaging system used, the utility model discloses the preparation is simple and convenient, low cost, and reliable and stable.

Description

Green light display device for night vision imaging system and display panel thereof

Technical Field

The present invention relates to a display device, and more particularly to a green light display device for a night vision imaging system, and to a display panel including the green light display device for the night vision imaging system.

Background

As a fourth generation green illumination light source, LEDs are widely used at present, and NVIS: the Night Vision Imaging System (NVIS) is an english abbreviation of Night vision imaging system, and the NVIS flat display element is an element used for displaying under the Night vision system. Nvis (night vision imaging system) is a night vision system applied in military, in which a flat display device is a module or a block for display, and its core part LED is used as a light emitting source, and is a display backlight or a light emitting indicator device formed through a specific process.

When a pilot works on an airplane, the pilot usually has a mask and a night vision device to move, and the carried device cannot be changed due to different working time, so that the required work can be normally and smoothly finished under a display mode of human eye observation during daytime flight and a night vision observation display mode after the pilot takes a night vision system on the premise that the pilot does not change the carried device.

And the night vision imaging system standard has five standard devices of green A, green B, yellow, red and white. Among them, the green a standard is most widely used, and its standard is the requirement of chromaticity coordinates: u-0.088, v-0.543 and r-0.037, which are shown in CIE1976 chromaticity diagram range (Standard reference GJB 1394-1992); meanwhile, both the radiation brightness and the photometric determination of the NVIS are required to be within a specific range, so how to manufacture the LED device meeting the NVIS green A standard is a new test for the existing LED display, which is also the blank field in China at present.

Disclosure of Invention

The utility model aims to solve the technical problem that a need provide a simple structure, and accord with the green glow display device that night vision imaging system used, on this basis, still further provided the display panel who includes the green glow display device that this night vision imaging system used.

To this end, the utility model provides a green glow display device that night vision imaging system used, include: the LED chip set comprises a first LED chip with the grain size of 495 and the grain size of 500nm and a second LED chip with the grain size of 538 and the grain size of 542nm, the positive electrode bonding pad and the negative electrode bonding pad are separately arranged at two ends of the support body, and the LED chip set is arranged on the negative electrode bonding pad and is respectively connected with the positive electrode bonding pad and the negative electrode bonding pad.

The utility model discloses a further improvement lies in, first LED chip and second LED chip series connection.

The utility model discloses a further improvement lies in, first LED chip and second LED chip establish ties mutually through the bonding gold wire.

The utility model discloses a further improvement lies in, the LED chipset through the bonding gold wire respectively with anodal pad and negative pole pad are connected.

The utility model discloses a further improvement lies in, the support main part is black support main part.

The utility model discloses a further improvement lies in, black support main part includes support body and black plastic layer, black plastic layer mould plastics in on the support body.

The utility model discloses a further improvement lies in, the sealant layer that has included silicate phosphor powder is filled between LED chipset and the support main part.

The utility model discloses a further improvement lies in, the pad area of negative pole pad is greater than the pad area of anodal pad.

The utility model discloses a further improvement lies in, the one end of negative pole pad is provided with the negative pole sign.

The utility model also provides a display panel that night vision imaging system used, included the display panel main part and as above the green glow display device that night vision imaging system used, the green glow display device that night vision imaging system used set up in the display panel main part.

Compared with the prior art, the beneficial effects of the utility model reside in that: the LED chip group is arranged on the negative electrode bonding pad, the LED chip group comprises a first LED chip with the wavelength of 495 plus 500nm and a second LED chip with the wavelength of 538 plus 542nm, the standard range requirement of the night vision imaging system is met by utilizing the spectrum of the two LED chips to synthesize the arrangement position of the two LED chips, the structure is simple, and the green light display device used by the night vision imaging system is met, the utility model discloses the manufacture is simple and convenient, the cost is low, and the stability and the reliability are realized.

Drawings

Fig. 1 is a schematic top view of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a positive electrode bonding pad and a negative electrode bonding pad according to an embodiment of the present invention;

fig. 3 is a schematic sectional view of a bracket main body according to an embodiment of the present invention.

Detailed Description

Preferred embodiments of the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, the present example provides a green light display device for a night vision imaging system, including: the LED chip set comprises a first LED chip 4 with the grain size of 495 and the grain size of 500nm and a second LED chip 5 with the grain size of 538 and the grain size of 542nm, wherein the positive electrode pad 2 and the negative electrode pad 3 are separately arranged at two ends of the support main body 1, and the LED chip set is arranged on the negative electrode pad 3 and is respectively connected with the positive electrode pad 2 and the negative electrode pad 3.

The support main body 1 is preferably a black support main body and is also in a black surface mount type direct mode, the support main body 1 is provided with 2 discrete bonding pads (an anode bonding pad 2 and a cathode bonding pad 3) and connecting pins, the LED chip set and the positive and negative stages of the support main body 1 are in circuit connection through a bonding alloy wire 6, namely the anode bonding pad 2 and the cathode bonding pad 3 are respectively connected with the N pole and the P pole of the LED chip set, the green light display device in accordance with the NVIS green A standard is enabled to be achieved through the spectrum combination of two LED chips, and the support main body is more preferably a sealing glue layer capable of being further matched with green fluorescent powder with a specific wavelength.

The black support main body preferably comprises a support body and a black plastic layer, the black plastic layer is injection-molded on the support body, the PPA material of the black plastic layer is made of pure black material, and all spectral characteristics are absorbed by black, so that the spectral intensity is weakened, and the intensity of the green light display device meets the NVIS standard. The first LED chip 4 is preferably a cyan LED chip with three amperes 495-500nm, the size of the cyan LED chip is 12 x 13mil, and the power consumption is 15.5-16.9 mw; the second LED chip 5 is preferably an emerald LED chip with the size of 538-542nm, the size of the emerald LED chip is 8-10 mil, and the power consumption is 6-7 mw; the spectrum difference of the two chips is utilized, and the integrated spectrum difference is set to meet the requirement of the NVIS standard range.

As shown in fig. 1, in this embodiment, the first LED chip 4 and the second LED chip 5 are connected in series, preferably, the first LED chip 4 and the second LED chip 5 are connected in series by a bonding alloy wire 6, the LED chip sets are respectively connected to the positive electrode bonding pad 2 and the negative electrode bonding pad 3 by the bonding alloy wire 6, and the used bonding gold wire is preferably made of 99.99% wire, so as to ensure the conductivity and reliability of the product.

In this embodiment, an adhesive sealing layer containing silicate fluorescent powder is filled between the LED chip set and the bracket main body 1, the silicate fluorescent powder is preferably added to BG531 fluorescent powder according to a weight ratio of 1% of the adhesive sealing layer, and then the silicone resin glue with a high thixotropic effect and a long-term heat resistance of 160 ℃ is used to realize the production of the adhesive sealing layer, so as to realize the adhesive sealing of the green fluorescent powder with a specific wavelength.

As shown in fig. 2, in this example, the pad area of the negative electrode pad 3 is greater than the pad area of the positive electrode pad 2, and in fact, the pad area of the negative electrode pad 3 is preferably greater than twice the pad area of the positive electrode pad 2, so as to facilitate the arrangement of the LED chip set, and the bottom of the negative electrode pad 3 is provided with a heat sink, so as to facilitate the simultaneous implementation of the conductive and heat dissipation requirements thereof.

As shown in fig. 1, a cathode mark 7 is arranged at one end of the cathode pad 3 in this example, so that the position of the cathode pad 3 at the mark position is convenient, and the processing and production are convenient; as shown in fig. 3, the main body 1 of the bracket of this embodiment is an inward-concave integrated bracket with a slope, which facilitates mounting of an LED chip and adjustment and control of a light emitting angle.

This example also provides a display panel for a night vision imaging system, which includes a display panel body and the green light display device for a night vision imaging system as described above, the green light display device for a night vision imaging system being disposed in the display panel body.

In summary, the present embodiment utilizes the spectrum of the two LED chips to integrate the arrangement positions thereof to meet the standard range requirement of the night vision imaging system, thereby achieving the purpose of simple structure and meeting the requirement of the green light display device for the night vision imaging system.

The above-mentioned embodiments are the preferred embodiments of the present invention, and the scope of the present invention is not limited to the above-mentioned embodiments, and the scope of the present invention includes and is not limited to the above-mentioned embodiments, and all equivalent changes made according to the shape and structure of the present invention are within the protection scope of the present invention.

Claims

1. A green light display device for a night vision imaging system, comprising: the LED chip set comprises a first LED chip with the grain size of 495 and the grain size of 500nm and a second LED chip with the grain size of 538 and the grain size of 542nm, the positive electrode bonding pad and the negative electrode bonding pad are separately arranged at two ends of the support body, and the LED chip set is arranged on the negative electrode bonding pad and is respectively connected with the positive electrode bonding pad and the negative electrode bonding pad.

2. The green light display device for a night vision imaging system of claim 1, wherein the first LED chip and the second LED chip are connected in series.

3. The green light display device for night vision imaging system of claim 2, wherein the first LED chip and the second LED chip are connected in series by a gold bond wire.

4. The green light display device for the night vision imaging system as claimed in claim 1, wherein the LED chip sets are connected to the positive electrode pad and the negative electrode pad through bonding gold wires, respectively.

5. The green light display device for a night vision imaging system of any one of claims 1 to 4, wherein the bracket body is a black bracket body.

6. The green light display device for the night vision imaging system of claim 5, wherein the black bracket main body comprises a bracket body and a black plastic layer, and the black plastic layer is injection molded on the bracket body.

7. The green light display device for the night vision imaging system as claimed in any one of claims 1 to 4, wherein an encapsulant layer including silicate phosphor is filled between the LED chip set and the bracket main body.

8. The green light display device for the night vision imaging system as claimed in any one of claims 1 to 4, wherein the pad area of the negative electrode pad is larger than the pad area of the positive electrode pad.

9. The green light display device for the night vision imaging system as claimed in any one of claims 1 to 4, wherein one end of the negative electrode pad is provided with a negative electrode mark.

10. A display panel for a night vision imaging system, comprising a display panel main body and the green light display device for a night vision imaging system as claimed in any one of claims 1 to 9, the green light display device for a night vision imaging system being provided in the display panel main body.