CN218630428U

CN218630428U - Electronic equipment

Info

Publication number: CN218630428U
Application number: CN202223048837.2U
Authority: CN
Inventors: 高国峰; 胡赛峰; 马晓康
Original assignee: Guangdong Bay Area Intelligent Terminal Industrial Design And Research Institute Co ltd
Current assignee: Guangdong Bay Area Intelligent Terminal Industrial Design And Research Institute Co ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-03-14
Anticipated expiration: 2032-11-16

Abstract

The utility model provides an electronic device, which comprises a conductive cloth, a flexible circuit board, a liquid crystal display screen and a backlight iron frame; the backlight iron frame is positioned on the back of the liquid crystal display screen; the conductive cloth is attached to the first surface of the flexible circuit board, the area of the conductive cloth is not larger than that of the flexible circuit board, the first surface of the flexible circuit board is not in contact with the backlight iron frame, the second surface of the flexible circuit board is in contact with the backlight iron frame, the flexible circuit board comprises a through hole area, the conductive cloth covers the through hole area, and the conductive cloth is in contact with the backlight iron frame through the through hole area. By adopting the electronic equipment, the problems of high reject ratio, complex repair process and high cost existing in the existing conductive cloth attached on the flexible circuit board can be solved.

Description

Electronic equipment

Technical Field

The utility model relates to a display screen field especially relates to an electronic equipment.

Background

In order to ensure the safety of a Liquid Crystal Display (LCD) and avoid radio frequency interference, a large piece of conductive cloth needs to be attached to the surface of a Flexible Printed Circuit (FPC) of the LCD, so that the grounding of the FPC and a backlight iron frame on the back of the LCD can be realized, the interference of redundant current is prevented, and the safety of the LCD is protected; and radio frequency interference caused by other devices can be avoided based on the shielding characteristic of the conductive cloth.

However, the conventional conductive cloth attached to the FPC has many disadvantages, for example, the area of the conductive cloth exceeds the area of the FPC, and thus foreign substances such as dust may be stained on the conductive cloth to affect the performance of the conductive cloth, and further, the problems of high defective rate of attaching the conductive cloth, complicated repair process and high cost may be caused.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides an electronic equipment for solve current conductive cloth attached have the defective rate high, repair the problem that the process is complicated and the expense is high on the flexible circuit board.

In a first aspect, an embodiment of the present invention provides an electronic device, including conductive cloth, a flexible circuit board, a liquid crystal display screen, and a backlight iron frame; the backlight iron frame is positioned on the back of the liquid crystal display screen;

the conductive cloth is attached to the first surface of the flexible circuit board, and the area of the conductive cloth is not more than that of the flexible circuit board; the first surface of the flexible circuit board is not in contact with the backlight iron frame, and the second surface of the flexible circuit board is in contact with the backlight iron frame;

the flexible circuit board comprises a through hole area, the conductive cloth covers the through hole area, and the conductive cloth is in contact with the backlight iron frame through the through hole area.

Adopt above-mentioned design, let the electrically conductive cloth area no longer than the flexible circuit board area, the electrically conductive cloth covers the through-hole region on the first face of flexible circuit board, and electrically conductive cloth passes through the through-hole region and contacts with the chase that is shaded, both protected liquid crystal display's security, avoid the radio frequency interference that other devices caused, guaranteed again that the attached of electrically conductive cloth can not be infected with the foreign matter, solved present electrically conductive cloth and attached the problem that has the defective rate height, repair process complicacy and expense height on the flexible circuit board.

Optionally, the via area is a blank non-trace area.

Optionally, when the conductive cloth is in contact with the backlight iron frame through the through hole region, grounding of the flexible circuit board and the backlight iron frame is achieved.

Optionally, before the second surface of the flexible circuit board contacts the backlight bezel, a release film is attached to the second surface of the flexible circuit board, and the release film covers the through hole region.

Optionally, the conductive cloth located in the through hole region is attached to the release film located in the through hole region.

Drawings

Fig. 1 is a schematic view of the present conductive fabric attached to the FPC in the present invention;

fig. 2 is a schematic structural diagram of an electronic device according to the present invention;

fig. 3 is a schematic side view of the conductive fabric in the electronic device of the present invention contacting the backlight chase through the via area;

fig. 4 (a) is a schematic front view of an electronic device according to the present invention, wherein the FPC is folded outside the LCD;

fig. 4 (b) is a schematic side view of the FPC folding outside the LCD in the electronic device of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The embodiment of the utility model provides an application scene of description is for clearer explanation the utility model discloses the technical scheme of embodiment does not constitute to the utility model discloses the technical scheme's that the embodiment provides is injectd, and ordinary technical staff in the art can know, along with the appearance of new application scene, the utility model provides a technical scheme is applicable to similar technical problem equally. In the description of the present invention, the term "plurality" means two or more unless otherwise specified.

Exemplarily, a schematic diagram of attaching an FPC to a conventional conductive cloth is shown in fig. 1. In fig. 1, the inner area of the black dashed frame is an FPC area, and the oblique line area inside the black solid frame is a conductive fabric covering area, and it can be seen from fig. 1 that the conductive fabric covering area exceeds the FPC area, and the area of the conductive fabric is too large and extends outside the black dashed frame of the FPC. Therefore, foreign substances such as dust may be contaminated to affect the performance of the conductive cloth.

Because FPC all turns over before reaching the complete machine mill and turns over outside LCD, thereby influence the performance of electrically conductive cloth in order to be stained with foreign matters such as dust, consequently electrically conductive cloth carries out the adhesion when the last step that the LCD equipment was accomplished, attaches in complete machine mill department promptly, but attaches in complete machine mill department and probably bring the problem that attached defective rate is high, the repair process is complicated and the expense is high. For example, when the attachment is performed in a factory of the whole machine, a jig needs to be manually used for attachment, which is inefficient. In addition, after the attachment of the whole factory is finished, the LCD is inspected after the assembly is finished, and if the problem of poor attachment exists, the disassembly treatment is needed, so that higher disassembly cost and material damage cost are generated. In addition, if the conductive cloth is wrinkled after the LCD is assembled, since the rear case of the LCD has hardness exceeding that of the screen, there may occur a problem that the screen is damaged by the top of the conductive cloth.

Based on this, the embodiment of the utility model provides an electronic equipment for solve current electrically conductive cloth and attach the problem that has the defective rate height, the repair process is complicated and the expense is high on FPC.

Illustratively, the embodiment of the present invention provides an electronic device, including conductive cloth, FPC, LCD and iron frame in a poor light, wherein, the iron frame in a poor light is located the back of LCD. Specifically, the conductive cloth is attached to the first surface of the FPC, the area of the conductive cloth is not larger than that of the FPC, the first surface of the FPC is not in contact with the backlight iron frame, and the second surface of the FPC is in contact with the backlight iron frame. And moreover, a through hole area is formed in the FPC, the conductive cloth can cover the through hole area, and then the conductive cloth is in contact with the backlight iron frame through the through hole area. The through hole area can be any area of the FPC with no wire, and the application is not limited.

Exemplarily, fig. 2 is that the embodiment of the present invention provides an electronic device structure schematic diagram, as shown in fig. 2, the black dashed frame inner region is the FPC region, the oblique line region inside the black solid frame is the conductive cloth coverage region, the blank region inside the black solid frame is the through hole region, and the whole white large region below the FPC region is the iron frame in a poor light. As can be seen from figure 2, the conductive cloth is attached to the first surface, which is not in contact with the backlight iron frame, of the FPC, the area of the conductive cloth is not larger than that of the FPC, meanwhile, the conductive cloth can be in contact with the backlight iron frame through the through hole area to form grounding, and the safety of the LCD is guaranteed. Specifically, a schematic side view of the conductive cloth contacting the backlight bezel through the via hole region is shown in fig. 3.

The embodiment of the utility model provides an electronic equipment still has FPC to turn over the condition of rolling over outside LCD, the condition that FPC's second face and chase contactless in a poor light promptly. Exemplarily, as shown in fig. 4 (a) and 4 (b), fig. 4 (a) is a schematic front view of the FPC being folded outside the LCD, and fig. 4 (b) is a schematic side view of the FPC being folded outside the LCD. As can be seen from fig. 4 (a) and 4 (b), a release film is attached to the second surface of the FPC, and the release film can cover the through hole region of the FPC. The release film may be any shape greater than or equal to the through hole region, and the application is not limited. The conductive cloth is attached to the first surface of the FPC, and the conductive cloth located in the through hole area can be attached to the release film located in the through hole area, so that the conductive cloth is prevented from being exposed to air and being stained with foreign matters such as dust.

Specifically, before the FPC is folded to the second face and contacts with the backlight bezel, the release film on the second face of the FPC needs to be torn off.

Through digging on FPC and establishing the through-hole region, attached the type membrane that can cover the through-hole region on FPC's second face for when FPC turns over the circumstances of rolling over outside LCD, will not exceed the electrically conductive cloth of FPC area and attach on FPC's first face, thereby guarantee that electrically conductive cloth can not be infected with foreign matter such as dust this moment.

Based on this, electrically conductive cloth can turn over at FPC and turn over and attach under the condition outside LCD, and screen factory department attaches promptly, can stand immediately after the screen factory is attached and carry out attached inspection, if there is the problem of attached bad or electrically conductive cloth fold, the processing step is simple, and the thing decreases the expense less to solved the current problem that electrically conductive cloth is high at the attached defective rate of complete machine factory, repair process is complicated and the expense is high.

The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, and all should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An electronic device is characterized by comprising conductive cloth, a flexible circuit board, a liquid crystal display screen and a backlight iron frame; the backlight iron frame is positioned on the back of the liquid crystal display screen;

the conductive cloth is attached to the first surface of the flexible circuit board, and the area of the conductive cloth does not exceed that of the flexible circuit board; the first surface of the flexible circuit board is not in contact with the backlight iron frame, and the second surface of the flexible circuit board is in contact with the backlight iron frame;

2. The electronic device of claim 1, wherein the via area is a blank non-trace area.

3. The electronic device of claim 1, wherein grounding of the flexible circuit board to the backlight bezel is achieved when the conductive cloth is in contact with the backlight bezel through the via area.

4. The electronic device of claim 1, wherein a release film is attached to the second side of the flexible circuit board before the second side of the flexible circuit board contacts the backlight bezel, the release film covering the via region.

5. The electronic device of claim 4, wherein the conductive cloth in the via region is attached to a release film in the via region.