CN220626817U

CN220626817U - Back copper leakage grounding structure of backlight FPC

Info

Publication number: CN220626817U
Application number: CN202320762433.5U
Authority: CN
Inventors: 庄少校; 杨磊; 黄芬; 樊劼
Original assignee: Truly Opto Electronics Ltd
Current assignee: Truly Opto Electronics Ltd
Priority date: 2023-04-07
Filing date: 2023-04-07
Publication date: 2024-03-19
Anticipated expiration: 2033-04-07

Abstract

The utility model discloses a back copper leakage grounding structure of a backlight FPC, which comprises the following components: the LCD display screen is internally provided with a backlight, a main screen FPC and the backlight FPC are arranged on the backlight, a backlight iron frame is arranged on the backlight, an antistatic piece is arranged on the backlight FPC and is electrically connected with the backlight iron frame, and the copper leakage grounding structure on the back of the backlight FPC has the functions of resisting static electricity and preventing LED damage.

Description

Back copper leakage grounding structure of backlight FPC

Technical Field

The utility model relates to the technical field of display modules, in particular to a back copper leakage grounding structure of a backlight FPC.

Background

The mobile phone screen mainly takes a touch screen as a main part, and comprises cover plate glass, a touch module, a display module and cover plate glass, wherein the display module mainly takes LCD as a main part. The inside of the display module needs a backlight plate to ensure that the back of the display screen emits light, and LEDs and the like are arranged on the backlight plate to emit light.

In the production of mobile phone display screens, the problem of static electricity cannot be completely avoided, and the static electricity may damage the LED lamps of the backlight plate in the display screen. In the case where the antistatic ability of the LED used in the backlight display module is weak, irreversible damage of the LED may occur. This is because the cross section of the conductive reflective film used is conductive, and during the ESD test, electrostatic charges are directly introduced into the backlight FPC from the cross section of the conductive reflective film, and then introduced into the LED through the backlight FPC, causing the LED to be damaged.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide an antistatic and anti-damage back copper leakage grounding structure of a backlight FPC.

The aim of the utility model is realized by the following technical scheme:

a back copper leakage grounding structure of a backlight FPC comprises: the LCD display screen is internally provided with a backlight, the backlight is provided with a main screen FPC and the backlight FPC, the backlight is provided with a backlight iron frame, and the backlight FPC is provided with an antistatic piece and is electrically connected with the backlight iron frame.

In one embodiment, the antistatic member is a copper area of a grounding drain, and the copper area of the grounding drain is disposed on a side of the backlight FPC, which is close to the backlight iron frame.

In one embodiment, the backlight FPC is bent and disposed on the backlight bezel.

In one embodiment, the backlight iron frame is connected to a grounding line, and the grounding copper area is electrically connected to the grounding line.

In one embodiment, the backlight FPC is connected to a ground line, and the backlight FPC is connected to the ground line of the backlight iron frame through the ground drain copper region.

In one embodiment, the conductive double-sided adhesive tape is arranged on the copper area of the grounding drain, one side of the conductive double-sided adhesive tape is connected with one side of the copper area of the grounding drain, which is close to the backlight iron frame, and the other side of the conductive double-sided adhesive tape is connected with the backlight iron frame.

In one embodiment, the conductive double-sided adhesive tape has conductivity, and the grounding copper area is communicated with the grounding line of the backlight iron frame through the conductive double-sided adhesive tape.

In one embodiment, the backlight, the main screen FPC and the backlight FPC are embedded in the LCD display screen, and form a display module.

Compared with the prior art, the utility model has at least the following advantages:

1. according to the copper leakage grounding structure on the back of the backlight FPC, the copper leakage grounding area is arranged on the backlight FPC and is connected with the grounding circuit of the backlight iron frame, so that the connection between the backlight FPC and the grounding circuit of the backlight iron frame is realized, when static electricity remains in the backlight FPC, the static electricity can be released through the circuit, and the LEDs on the backlight are prevented from being damaged;

2. according to the back copper leakage grounding structure of the backlight FPC, the conductive double-sided adhesive is arranged to tightly connect the copper leakage area with the backlight iron frame, so that good contact between the copper leakage area of the backlight FPC and the backlight iron frame is ensured on the premise of not affecting conductivity.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings that are required to be used in the embodiments will be briefly described.

Fig. 1 is a schematic diagram of the structure of the front side of a backlight in a back side copper leakage grounding structure of a backlight FPC provided by the present utility model;

fig. 2 is a schematic diagram of a back surface of a backlight in a back surface copper leakage grounding structure of a backlight FPC according to the present utility model.

Description of the drawings: 10. an LCD display screen; 20. a backlight; 21. a backlight iron frame; 30. a main screen FPC; 40. backlight FPC; 41. a grounding drain copper region; 50. conductive double-sided adhesive tape.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings.

Referring to fig. 1, the back copper leakage grounding structure of a backlight FPC comprises an LCD display screen 10, wherein a backlight 20 is arranged in the LCD display screen 10. The backlight 20 is divided into a front surface and a back surface, and a backlight iron frame 21 is arranged on the back surface of the backlight 20, and the backlight iron frame 21 is closely connected with the back surface of the backlight 20. The back of the backlight 20 is provided with a main screen FPC30 and a backlight FPC40, and the main screen FPC30, the backlight FPC40 and the backlight 20 are embedded in the LCD display screen 10, so that a display module is formed.

Referring to fig. 1 and 2, an antistatic member for antistatic is disposed on the backlight FPC40, in this embodiment, the antistatic member is a copper grounding drain region 41, the copper grounding drain region 41 is located on one side of the backlight FPC40 close to the backlight iron frame 21, and when in use, the backlight FPC40 needs to be bent, so that the copper grounding drain region 41 on the backlight FPC40 contacts one side of the backlight iron frame 21. The backlight FPC40 communicates with a ground line, and the ground drain copper region 41 communicates with the ground line of the backlight FPC 40.

Referring to fig. 2, the backlight iron frame 21 is connected to a ground line, and when the backlight FPC40 is bent so that the ground drain copper region 41 is connected to the backlight iron frame 21, the ground drain copper region 41 is electrically connected to the backlight iron frame 21, and the ground drain copper region 41 is connected to the ground line connected to the backlight iron frame 21, so that the backlight FPC40 is electrically connected to the ground line of the backlight iron frame 21.

Referring to fig. 1 and 2, in order to better connect the ground drain copper region 41 with the backlight iron frame 21, a conductive double-sided adhesive 50 is disposed on the ground drain copper region 41 of the backlight FPC40, and the conductive double-sided adhesive 50 is disposed on a side of the ground drain copper region 41 facing the backlight iron frame 21. Both sides of the conductive double-sided adhesive tape 50 are adhesive, one side of the conductive double-sided adhesive tape 50 is adhered to one side of the grounding copper area 41 facing the backlight iron frame 21, and the other side of the conductive double-sided adhesive tape 50 is used for adhering with the backlight iron frame 21.

Referring to fig. 1 and 2, when in use, the backlight FPC40 is bent, and then the ground drain copper region 41 of the backlight FPC40 is bonded to the backlight iron frame 21 by the conductive double-sided adhesive tape 50. Since the conductive double-sided adhesive tape 50 has conductivity, communication between the ground line of the backlight iron frame 21 and the ground drain copper region 41 of the backlight FPC40 is not affected. After the grounding circuit of the backlight FPC40 is communicated with the grounding circuit of the backlight iron frame 21 through the grounding copper area 41, if static electricity remains on the backlight FPC40, the static electricity can be released by being transmitted to the grounding circuit of the backlight iron frame 21 through the grounding circuit of the backlight FPC40, so that the LED lamp on the backlight 20 is prevented from being damaged.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model, which are within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The utility model provides a back of a body light FPC leaks copper ground structure which characterized in that includes: the LCD display screen (10), be provided with in the LCD display screen (10) and be shaded (20), be provided with main screen FPC (30) and on being shaded FPC (40) on being shaded (20), be provided with on being shaded FPC (20) and be shaded iron frame (21), be provided with antistatic piece on being shaded FPC (40) with be shaded iron frame (21) electric connection, antistatic piece is ground floor drain copper district (41), ground floor drain copper district (41) set up in being shaded FPC (40) be close to one side of being shaded iron frame (21), be shaded iron frame (21) intercommunication earth connection, ground floor drain copper district (41) with earth connection, be shaded FPC (40) intercommunication earth connection, be shaded FPC (40) with the earth connection of being shaded iron frame (21) passes through ground drain copper district (41) is connected, be provided with on ground floor drain copper district (41) and electrically conductive bonding (50), one side of electrically conductive bonding copper is close to being shaded iron frame (21) one side of being shaded iron frame (50) electrically conductive bonding, one side of electrically conductive bonding copper (50) is close to being shaded iron frame (21), the grounding drain copper area (41) is communicated with a grounding line of the backlight iron frame (21) through the conductive double-sided adhesive tape (50).

2. The back copper leakage grounding structure of a backlight FPC according to claim 1, wherein the backlight FPC (40) is bent and arranged on the backlight iron frame (21).

3. The back copper leakage grounding structure of a backlight FPC according to claim 1, wherein the backlight (20), the main screen FPC (30) and the backlight FPC (40) are embedded in the LCD display screen (10) and form a display module.