CN218647268U

CN218647268U - PCB for backlight module, backlight module and display module

Info

Publication number: CN218647268U
Application number: CN202222932529.XU
Authority: CN
Inventors: 何纯通
Original assignee: Truly Semiconductors Ltd
Current assignee: Truly Semiconductors Ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-03-17
Anticipated expiration: 2032-11-03

Abstract

The utility model discloses a PCB, backlight unit and display module assembly for backlight unit, wherein PCB for backlight unit includes: the PCB body is formed by splicing a plurality of PCBs; the double-sided adhesive covers at least partial area of the PCB body, is of an integral structure and can cover one row or one column of the PCB body; the double-sided adhesive comprises a double-sided adhesive layer and a protective film layer covering the double-sided adhesive layer. The utility model discloses two-sided gluing adopts the design of full version, is convenient for paste, has improved PCB circuit board's attached efficiency, and two-sided gluing still is equipped with the locating hole, has guaranteed attached accuracy, and two-sided whole version of gluing sets up to one line or one line, and PCB circuit board can also unpack one line or one line apart after attached two-sided gluing like this, and the PCB circuit board of being convenient for adjusts.

Description

PCB for backlight module, backlight module and display module

Technical Field

The utility model relates to a backlight unit technical field especially relates to a PCB, backlight unit and display module assembly for backlight unit.

Background

In the liquid crystal display module, a backlight module is required to provide a light source, so that a PCB is required to be disposed on the backlight module, and an LED is fixed on the PCB as a backlight source. PCB circuit board needs to be fixed through two-sided gluing, because PCB circuit board is the monoblock makeup supplied materials mostly, and the double faced adhesive tape is the wall scroll supplied materials, and attached inefficiency, and manual attached moreover is accurate inadequately, leads to attached effect poor.

In view of the above, it is desirable to improve the conventional PCB for the backlight module to improve the attaching efficiency and the attaching accuracy of the PCB.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a PCB, backlight unit and display module assembly for backlight unit for solve prior art, the attached inefficiency of PCB circuit board and the poor problem of attached accuracy.

In order to solve the above problem, the utility model adopts the following technical scheme:

provided is a PCB for a backlight module, including:

the PCB body is formed by splicing a plurality of PCBs;

the double-sided adhesive covers at least partial area of the PCB body, is of an integral structure and can cover one row or one column of the PCB body;

the double-sided adhesive comprises a double-sided adhesive layer and a protective film layer covering the double-sided adhesive layer.

In the above scheme, the protective film layer is provided with a plurality of positioning holes.

In the above scheme, the PCB bodies are distributed in an array, and a plurality of rows or columns of the double-sided adhesive are covered on the PCB bodies.

In the above scheme, one or more backlight sources are arranged on the PCB body.

In the scheme, the gap between the double-sided adhesive and the edge of the PCB body is not less than 0.3mm.

The utility model also provides a backlight module, including any one of the above-mentioned scheme PCB for backlight module.

In the above scheme, the method further comprises: the PCB comprises a reflecting film, a light guide plate and an optical diaphragm which are arranged in a stacked mode, wherein the PCB body is arranged at the bottom of the optical diaphragm.

In the above scheme, the backlight module further comprises a frame, wherein the frame is used for buckling and fixing the backlight module.

The utility model also provides a display module assembly, including any one of the above-mentioned scheme backlight unit.

In the above scheme, the display device further comprises a display panel, and the display panel and the backlight module are arranged in a stacked mode.

The utility model discloses a technical scheme can reach following beneficial effect:

the design of whole version is adopted to two-sided gluing, is convenient for paste, has improved PCB circuit board's attached efficiency, and two-sided gluing still is equipped with the locating hole, has guaranteed attached accuracy, and two-sided whole version that glues sets up to one line or one row, and PCB circuit board can also unpack apart into one line or one row after attached two-sided gluing like this, and the PCB circuit board of being convenient for adjusts.

Drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the drawings required for use in the description of the embodiments are described below simply to form a part of the present invention, and the exemplary embodiments and the explanation of the present invention explain the present invention without making undue restrictions to the present invention. In the drawings:

fig. 1 is a schematic structural view of a PCB for a backlight module disclosed in embodiment 1 of the present invention;

fig. 2 is a schematic structural view of double-sided adhesion of a PCB for a backlight module disclosed in embodiment 1 of the present invention.

The following reference numerals are included:

PCB body-10; double-sided sticky-20; double-sided adhesive layer-21; a protective film layer-22; positioning hole-23.

Detailed Description

To make the purpose, technical solution and advantages of the present invention clearer, the following description will be given with reference to the embodiments of the present invention and the accompanying drawings, in which the technical solution of the present invention is clearly and completely described. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1 and fig. 2, the utility model provides a PCB for backlight module, include:

the PCB body 10 is formed by splicing a plurality of PCBs; the double-sided adhesive 20 covers at least partial area of the PCB body 10, and the double-sided adhesive 20 is of a full-page structure and can cover one row or one column of the PCB body 10; the double-sided tape 20 includes a double-sided tape layer 21, and a protective film layer 22 covering the double-sided tape.

The utility model discloses two-sided glue 20 adopts the design of full page, is convenient for paste, has improved PCB circuit board's attached efficiency to attached accuracy has been improved.

In this embodiment, the protective film 22 is preferably provided with a plurality of positioning holes 23. When the double-sided adhesive 20 is adhered to the PCB body 10, the positioning holes 23 can be used for positioning, and the adhering accuracy is further guaranteed.

When pasting, can fix PCB body 10 earlier through the tool, avoid PCB body 10 to remove when pasting, further, be equipped with the guide post on the tool, correspond with the position of locating hole 23, can guide the attached position that two-sided gluing 20. Specifically, when pasting, pass locating hole 23 with the guide post, will glue 20 again two-sided and attached with PCB body 10, attached precision is high to attached efficiency has been improved.

Preferably, the PCB body 10 is distributed in an array, so that the waste of the board is reduced, and the PCB body 10 is covered with a plurality of rows or columns of double-sided adhesive 20. The double-sided tape 20 is in a single row or single column structure, so that the PCB body 10 can be disassembled into a row or a column after the double-sided tape 20 is attached, thereby facilitating the adjustment of the PCB body 10.

One or more backlight sources are disposed on the PCB body 10. Preferably, the backlight source is an LED, the cost is low, the service life is long, the brightness is high, and the backlight source provides brightness for the display panel.

Preferably, the gap between the double-sided adhesive 20 and the edge of the PCB body 10 is not less than 0.3mm. Reducing the tolerance problem of the PCB body 10 and the double-sided tape 20 causes the splicing position of the PCB body 10 to be stuck, affecting the separation. The accuracy of double-sided adhesion is improved.

Example 2

The utility model also provides a backlight module, PCB for backlight module among the embodiment 1.

Further comprising: the PCB comprises a reflection film, a light guide plate and an optical diaphragm which are arranged in a stacked mode, and a PCB body 10 is arranged at the bottom of the optical diaphragm. The optical film comprises a first bright enhancement film, a second bright enhancement film and a diffusion film which are arranged in a stacked mode. The light emitted by the backlight source is reflected by the reflecting film, guided by the light guide plate and amplified and diffused by the optical film and then is emitted to the display panel.

The frame is used for buckling and fixing the backlight module. Since the backlight module has a plurality of film layer structures, the frame is required to be fixed. The frame can be an iron frame or an integrated structure of rubber and iron.

Example 3

The utility model also provides a display module assembly, including the backlight unit in embodiment 2.

The display panel is stacked with the backlight module. The backlight module provides light for the display panel.

The utility model discloses two-sided gluing adopts the design of full version, is convenient for paste, has improved PCB circuit board's attached efficiency, and two-sided gluing still is equipped with the locating hole, has guaranteed attached accuracy, and two-sided whole version of gluing sets up to one line or one line, and PCB circuit board can also unpack one line or one line apart after attached two-sided gluing like this, and the PCB circuit board of being convenient for adjusts.

The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention.

Claims

1. A PCB for a backlight module, comprising:

the PCB body is formed by splicing a plurality of PCBs;

2. The PCB of claim 1, wherein the protective film has a plurality of positioning holes.

3. The PCB of claim 1, wherein the PCB body is distributed in an array, and the PCB body is covered with a plurality of rows or columns of the double-sided adhesive.

4. The PCB of claim 1, wherein the PCB body is provided with one or more backlight sources.

5. The PCB of claim 1, wherein a gap between the double-sided adhesive and the edge of the PCB body is not less than 0.3mm.

6. A backlight module comprising the PCB for a backlight module according to any one of claims 1 to 5.

7. The backlight module according to claim 6, further comprising: the PCB comprises a reflecting film, a light guide plate and an optical diaphragm which are arranged in a stacked mode, wherein the PCB body is arranged at the bottom of the optical diaphragm.

8. The backlight module according to claim 6, further comprising a frame for snap-fitting the backlight module.

9. A display module comprising the backlight module of any one of claims 6-8.

10. The display module according to claim 9, further comprising a display panel stacked on the backlight module.