CN216979518U

CN216979518U - Novel prevent static and electromagnetic interference resistance display module assembly and display device

Info

Publication number: CN216979518U
Application number: CN202123145873.6U
Authority: CN
Inventors: 廖亿彬; 万志强
Original assignee: Truly Semiconductors Ltd
Current assignee: Truly Semiconductors Ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-07-15
Anticipated expiration: 2031-12-14

Abstract

The utility model discloses a novel anti-static and anti-electromagnetic interference display module and display equipment, wherein the display module comprises: the backlight module comprises a frame body, a reflector plate, a light guide plate, an optical film layer and a backlight FPC (flexible printed circuit) which is fixed with the light guide plate and is provided with a backlight source, wherein the backlight FPC is provided with a metal wiring connected with a GND (ground) circuit on a main circuit board of the display equipment; a display panel supported on the frame; and the lower polarizer is provided with an anti-static layer, wherein the anti-static layer is electrically connected with the backlight FPC. According to the utility model, the anti-ESD and anti-EMC capabilities of the display panel are ensured through the anti-static layer, so that a metal frame can be omitted from a frame body of the backlight module, the cost of the anti-static layer is lower than that of the metal frame, and the cost of the display module can be effectively reduced.

Description

Novel prevent static and electromagnetic interference resistance display module assembly and display device

Technical Field

The utility model relates to the technical field of display, in particular to a novel anti-static and anti-electromagnetic interference display module and display equipment.

Background

With the continuous development of liquid crystal display technology, the market competition of liquid crystal display products is more and more intense. The cost of the backlight module as one of the main components of the liquid crystal display product is increasing.

At present, in order to reduce the interference of static electricity (ESD for short) and electromagnetism (EMC for short) released by a main circuit board of a liquid crystal display product to, for example, liquid crystal of a backlight module, a frame body of the backlight module uses a rubber frame. The rubber frame comprises a metal frame formed by enclosing a bottom wall and a side wall and a rubber frame positioned on the inner side of the metal frame, and the interference of static electricity and electromagnetism on liquid crystal and the like is reduced through the metal frame. However, the cost of the metal frame is high, which increases the cost of the backlight module.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a novel anti-static and anti-electromagnetic interference display module and display equipment, which are used for solving the problem that in the prior art, the cost is higher when anti-static and anti-electromagnetic interference processing is carried out on a display panel.

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

the utility model provides a novel prevent static and electromagnetic interference display module assembly, include:

the backlight module comprises a frame body, a reflector plate, a light guide plate, an optical film layer and a backlight FPC (flexible printed circuit) which is fixed with the light guide plate and is provided with a backlight source, wherein the reflector plate, the light guide plate and the optical film layer are arranged in the frame body;

a display panel supported on the frame;

the lower polarizer is arranged between the display panel and the optical film layer, and an anti-static layer is arranged on the whole surface of the lower polarizer, wherein the anti-static layer is electrically connected with the backlight FPC.

Optionally, the antistatic layer is electrically connected to the backlight FPC through a conductive adhesive tape.

Optionally, the conductive adhesive tape is bonded to the lower polarizer, the light guide plate and one surface of the backlight FPC, which faces away from the light guide plate.

Optionally, the antistatic layer is disposed on a surface of the lower polarizer facing the optical film layer.

Optionally, the antistatic layer is disposed on a surface of the lower polarizer facing the display panel.

Optionally, the anti-static layer is an anti-static film adhered to the lower polarizer or an anti-static adhesive coated on the lower polarizer.

Optionally, the frame body is a rubber frame formed by surrounding a side wall, a convex edge for supporting the display panel is arranged at the top of the rubber frame, and the reflecting sheet is arranged at the bottom of the rubber frame in a bonding mode.

Optionally, the display panel includes a TFT substrate and a main screen FPC bonded to the TFT substrate, wherein the backlight FPC is directly connected to the main screen FPC, and the main screen FPC is connected to the main circuit board.

Optionally, the backlight FPC is welded to the main screen FPC, and the main screen FPC is connected to the main circuit board through a connector.

Still provide a display device, characterized in that, include any one above-mentioned novel prevent static and electromagnetic interference display module assembly.

Still provide a mobile terminal, include any one of the above-mentioned liquid crystal display module FPC.

The technical scheme adopted by the utility model can achieve the following beneficial effects:

static electricity is led to the backlight FPC from the lower polarizer with the conducting capacity and then led to the GND circuit on the main circuit board, and the static electricity is led to the external GND through the GND circuit, so that the shielding effect on the display panel is achieved, and the anti-ESD and anti-EMC capacity of the display panel is guaranteed; the anti-static layer ensures the anti-ESD and anti-EMC capability of the display panel, namely, the anti-static and anti-electromagnetic interference capability, so that a metal frame can be omitted from the frame body of the backlight module, the cost of the anti-static layer is lower than that of the metal frame, and the cost of the display module can be effectively reduced; simple structure and convenient processing and manufacturing.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below to form a part of the present invention, and the exemplary embodiments and the description thereof illustrate the present invention and do not constitute a limitation of the present invention. In the drawings:

fig. 1 is a schematic structural diagram of a display module according to an embodiment of the disclosure;

fig. 2 is an enlarged view of a portion a of fig. 1.

Wherein the following reference numerals are specifically included in figures 1-2:

a backlight module-1; a light guide plate-11; a backlight FPC-12;

a lower polarizer-2; an antistatic layer-21;

a display panel-3; a TFT substrate-31; a main screen FPC-32;

conductive adhesive tape-4;

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the disclosed embodiments are merely exemplary of the utility model, and are not intended to be exhaustive or exhaustive. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The display module can effectively reduce the cost on the premise of realizing static electricity prevention (namely ESD resistance) and electromagnetic interference prevention (namely EMC resistance). As shown in fig. 1 and 2, the display module includes a backlight module 1, a lower polarizer 2, a display panel 3, an upper polarizer and a cover plate, which are sequentially disposed. The whole surface of the lower polarizer 2 is provided with an antistatic layer 21. The antistatic layer 21 may be an antistatic film or an antistatic adhesive to meet various use requirements. The antistatic layer 21 may be disposed on a side of the lower polarizer 2 facing the backlight module 1, or may be disposed on a side of the lower polarizer 2 facing the display panel 3, so as to satisfy various use requirements. It is preferable here that the antistatic layer 21 is disposed on the side of the lower polarizer 2 facing the backlight module 1 to facilitate connection of the antistatic layer 21 and the backlight FPC12 through the conductive adhesive tape 4.

The display panel 3 has the same configuration as usual, and includes a TFT substrate 31, liquid crystal, a CF substrate, and a main screen FPC32 bonded to the TFT substrate 31. The main screen FPC32 is routed from the back surface of the backlight module 1 to be connected to the main circuit board of the display device.

The backlight module 1 includes a frame, a backlight FPC12 having a backlight source on the front surface, and a reflective sheet, a light guide plate 11 and an optical film layer sequentially disposed in the frame. One end of the backlight FPC12 is fixed on the light guide plate 11 with the front face facing the light guide plate 11. The back of the backlight FPC12, i.e., the side facing the lower polarizer 2, is provided with metal traces. The conductive adhesive tape 4 is adhered to one surface of the light guide plate 11 facing the lower polarizer 2. The conductive adhesive tape 4 is located between the lower polarizer 2 and the backlight FPC12, and extends to be connected with the metal wirings of the lower polarizer 2 and the backlight FPC12, and the conductive adhesive tape 4 conducts the metal wirings of the antistatic layer 21 and the backlight FPC 12. And the metal traces of the backlight FPC12 communicate with the GND lines on the main circuit board of the display device. Therefore, static electricity can be led to the backlight FPC12 from the lower polarizer 2 with the conductive capability and then led to the GND circuit on the main circuit board, and the static electricity is led to the external GND through the GND circuit, so that the display panel 3 is shielded, and the ESD resistance and EMC resistance of the display panel 3 are ensured; the anti-ESD and anti-EMC capabilities of the display panel 3 are ensured through the anti-static layer 21, so that a metal frame can be omitted for the frame body of the backlight module 1, the cost of the anti-static layer 21 is lower than that of the metal frame, and the cost of the display module can be effectively reduced.

The frame body structure of the metal frame can be specifically set according to requirements. In one example, the frame body is a rubber frame surrounded by side walls. The top of the rubber frame is provided with a convex edge, and the display panel 3 is arranged on the convex edge. The reflector plate can be adhered to the bottom surface of the side wall of the rubber frame, or a boss is arranged at the bottom of the rubber frame, and the reflector plate is adhered to the boss. So set up, the simple structure of framework, it is with low costs, the processing preparation of being convenient for.

In addition, the backlight FPC12 can be directly soldered to the main screen FPC32, for example, and the main screen FPC32 is connected to the main circuit board through a connector, which is convenient for processing and manufacturing. At this time, the main screen FPC32 is provided with an auxiliary metal trace, and the auxiliary metal trace is connected to the metal trace of the backlight FPC12 and the GND line of the main circuit board, so that the metal trace of the backlight FPC12 and the GND line of the main circuit board are connected.

The display equipment comprises the display module. In the display device, static electricity is led to the backlight FPC12 from the lower polarizer 2 with the conductive capability and then led to the GND circuit on the main circuit board, and the static electricity is led to the external GND through the GND circuit, so that the display panel 3 is shielded, and the ESD resistance and EMC resistance of the display panel 3 are ensured; the anti-ESD and anti-EMC capabilities of the display panel 3 are ensured through the anti-static layer 21, so that a metal frame can be omitted from a frame body of the backlight module 1, the cost of the anti-static layer 21 is lower than that of the metal frame, and the cost of the display module can be effectively reduced; simple structure and convenient processing and manufacturing.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. The utility model provides a novel prevent static and electromagnetic interference display module assembly which characterized in that includes:

the backlight module comprises a frame body, a reflector plate, a light guide plate, an optical film layer and a backlight FPC (flexible printed circuit) which is fixed with the light guide plate and is provided with a backlight source, wherein one surface of the backlight FPC, which faces away from the light guide plate, is provided with a metal wire connected with a GND (ground) circuit on a main circuit board of the display equipment;

a display panel supported on the frame;

2. The novel antistatic and EMI resistant display module as set forth in claim 1, wherein said antistatic layer is electrically connected to said back-lit FPC via a conductive tape.

3. The novel antistatic and EMI shielding display module set forth in claim 2, wherein the conductive tape is bonded to the lower polarizer, the light guide plate, and the side of the backlight FPC facing away from the light guide plate.

4. The novel module of claim 1, wherein the anti-static layer is disposed on a surface of the lower polarizer facing the optical film layer.

5. The novel module of claim 1, wherein the anti-static layer is disposed on a surface of the lower polarizer facing the display panel.

6. The novel antistatic and EMI shielding display module set as set forth in claim 5, wherein the antistatic layer is an antistatic film adhered to the lower polarizer or an antistatic glue coated on the lower polarizer.

7. The module as claimed in claim 1, wherein the frame body is a plastic frame surrounded by sidewalls, the top of the plastic frame is provided with a protruding edge for supporting the display panel, and the bottom of the plastic frame is adhered with the reflective sheet.

8. The novel electrostatic and electromagnetic interference prevention display module as claimed in any one of claims 1 to 7, wherein the display panel comprises a TFT substrate and a main screen FPC bonded to the TFT substrate, wherein the backlight FPC is directly connected to the main screen FPC, and the main screen FPC is connected to the main circuit board.

9. The novel anti-static and anti-electromagnetic interference display module as claimed in claim 8, wherein the backlight FPC is soldered to the main screen FPC, and the main screen FPC is connected to the main circuit board through a connector.

10. A display device comprising the novel anti-static and anti-electromagnetic interference display module set recited in any one of claims 1 to 9.