CN207584473U - A kind of PCB substrate applied to reflective lamp bar and reflective lamp bar - Google Patents

Abstract

The utility model discloses a PCB substrate applied to a reflective light bar and a reflective light bar. The side of the PCB substrate used for mounting LED lamp beads is coated with a reflective ink layer, and the reflective ink layer is surrounded by A round black ink layer is coated around the LED lamp bead. The utility model absorbs part of the light reflected by the lens through the black ink layer coated on the PCB substrate, thereby effectively improving problems such as bright spots and bright spots of the backlight module, thereby presenting a uniform subjective picture.

Description

A PCB substrate applied to a reflective light bar and a reflective light bar

technical field

The utility model relates to the technical field of LED liquid crystal displays, in particular to a PCB substrate applied to a reflective light bar and a reflective light bar.

Background technique

Compared with traditional CRT monitors, LED LCD monitors are more environmentally friendly, have low power consumption, and better display effects, so they have gradually replaced CRT monitors. The backlight module is one of the key components of the liquid crystal display. Since the liquid crystal panel itself does not emit light, it is necessary for the backlight module to provide a light source for the liquid crystal panel to realize image display. The light bar is an important device that directly emits light in the backlight module. At present, the proportion of direct-type backlight in the backlight module is increasing, and there are more and more types of lenses matched with LED lamp beads. Among them, the direct matching of lenses and LED lamp beads often cannot obtain a better picture. Subjective As a result, problems such as bright spots and bright spots will be formed.

Utility model content

In order to solve the above-mentioned technical problems in the prior art, the utility model provides a PCB substrate and a reflective light bar applied to a reflective light bar.

The technical scheme that the utility model adopts is:

A reflective ink layer is coated on the side of the PCB substrate for mounting LED lamp beads, and a black ink layer with a circular outline is coated on the reflective ink layer around the LED lamp beads.

The black ink layer is surrounded by at least one circle of uniform black ink dots.

The black ink dots at different distances from the center of the LED light bead have the same radius or the black ink dots on the outer circle have a larger radius than the black ink dots on the inner circle.

The edge of the position where the lens is mounted on the PCB substrate is coated with a strip-shaped ink layer.

The reflective light bar made of the PCB substrate includes: LED lamp beads and lenses mounted on the PCB substrate.

Compared with the prior art, the utility model has the advantages of:

Through the black ink layer coated on the PCB substrate, part of the light reflected from the lens to the PCB substrate is absorbed, so that the excess light will not be re-reflected through the reflective ink layer, and the problems such as bright spots and bright spots of the backlight module can be effectively improved. The backlight module can present a uniform subjective picture and improve the display quality.

Description of drawings

Fig. 1 is the front view of the utility model;

Fig. 2 is the top view of the utility model after coating the black ink layer;

Fig. 3 is the plan view after the utility model is coated with black ink point;

Fig. 4 is a top view of the utility model after the strip-shaped ink layer is coated.

Detailed ways

The principle and structure of the present utility model will be described in detail below in conjunction with the accompanying drawings and embodiments.

Because the lens will reflect part of the light to the reflective ink layer of the PCB substrate, after the reflection of the reflective ink, problems such as bright spots and bright spots will be formed above the lens, which will affect the display quality.

As shown in Figures 1 and 2, an embodiment of the present invention proposes a PCB substrate applied to a reflective light bar. The side of the PCB substrate 1 where the LED lamp bead 2 is mounted is covered with The reflective ink layer 4, the surface of the reflective ink layer is centered on the LED lamp bead 2, and the square area avoiding the LED lamp bead 2 is coated with a black ink layer 5 with an inner square and an outer circle, and the lens 3 is reflected to the PCB through the black ink layer 5 Part of the light from the substrate or the light emitted by the LED lamp bead 2 is directly absorbed by the PCB substrate 1, so that the light will not be reflected twice to avoid bright spots and bright spots.

As shown in Figure 3, two circles of black ink dots 6 are coated on the periphery centered on the circular black ink layer 5, and the black ink dots 6 are evenly distributed around the central black ink layer 5 in a ring shape and located within the coverage of the lens. And the radius of the black ink dot on the circular ring with a larger radius is also larger, which further absorbs the light reflected by the lens 3 . In this embodiment, the black ink dots 6 are located within the range covered by the lens 3, and the black ink dots on different rings have the same radius, which is also within the protection scope of the present invention.

As shown in FIG. 4 , black stripes of ink 7 are coated on the corresponding PCB substrate 1 where the edge of the mounting lens 3 is attached to the lens 3 , and the black stripes of ink 7 communicate with both sides of the PCB substrate 1 .

The utility model also proposes a reflective light bar using the above-mentioned PCB substrate, which is also within the protection scope of the utility model. The reflective light bar is shown in Figure 1, including: PCB substrate 1, LED lamp beads 2 that act as light sources are mounted side by side on PCB substrate 1, and lens 3 is mounted on LED lamp beads 2 with the LED lamp bead as the center. s surface.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention.

Any modification, equivalent replacement and improvement made within the rules shall be included in the protection scope of the present invention.

Claims (4)

1. A PCB substrate applied to a reflective light bar, the side of the PCB substrate for mounting LED lamp beads is coated with a reflective ink layer, and the reflective ink layer is coated with an outline around the LED lamp beads It is a circular black ink layer, which is characterized in that the edge of the position where the lens is mounted on the PCB substrate is coated with a strip-shaped ink layer. 2 . The PCB substrate applied to a reflective light bar according to claim 1 , wherein the black ink layer is surrounded by at least one circle of uniform black ink dots. 3 . 3. A PCB substrate applied to a reflective light bar as claimed in claim 1, wherein the black ink dots having a different distance from the center of the LED light bead have the same radius or the black ink dots on the outer ring have a larger radius than the inner black ink dots. Circle black ink dot radius. 4. A reflective light bar made of the PCB substrate according to any one of claims 1 to 3, comprising: LED lamp beads and lenses mounted on the PCB substrate.