CN111954365A

CN111954365A - FPC for backlight circuit board of vehicle-mounted LCM (liquid crystal module)

Info

Publication number: CN111954365A
Application number: CN201910410171.4A
Authority: CN
Inventors: 王家宏; 王军; 张江惠
Original assignee: Yangzhou Huameng Electronics Co ltd
Current assignee: Yangzhou Huameng Electronics Co ltd
Priority date: 2019-05-17
Filing date: 2019-05-17
Publication date: 2020-11-17

Abstract

The invention discloses an FPC (flexible printed circuit) for a backlight circuit board of a vehicle-mounted LCM (liquid crystal module) in the technical field of vehicle-mounted accessories, which comprises an FPC body, wherein one side of the FPC body is provided with a connecting part, the other side of the FPC body is outwards provided with extending parts at intervals, the tail ends of the extending parts are provided with golden fingers, one side of the side wall of each extending part, which is provided with conductive cloth with glue, is provided with two grounding pins, the extending parts are provided with window-opening areas, the FPC body is provided with positioning holes, and one side wall of each extending part is provided. According to the FPC positioning device, the limiting clamping grooves formed in the side walls of the limiting plates are clamped into the mounting shell, and then the positioning pieces are inserted into the limiting holes, so that the accurate position of the FPC of the module can be accurately controlled, and the use effect is good.

Description

FPC for backlight circuit board of vehicle-mounted LCM (liquid crystal module)

Technical Field

The invention relates to the technical field of vehicle-mounted accessories, in particular to an FPC (flexible printed circuit) for a backlight circuit board of a vehicle-mounted LCM (liquid crystal module).

Background

The FPC is a flexible printed circuit board, in general, a PCB made of a flexible material (a material that can be folded or bent) connector is used for connecting an LCD display screen to a driving circuit (PCB), and a 0.5mm pitch product is mainly used

Because of the characteristics of flexibility, easy bending and softness, the external dimension of the product is often greatly deviated during production and is not in accordance with the designed standard dimension; when being arranged in liquid crystal display module assembly simultaneously, because pliable and tough, so the corner often sticks up when the crimping is on LCD for the assembly positioning is inaccurate, and accurate location is difficult when leading to the assembly, and the reliability after the assembly is poor moreover, often needs to reprocess, for this reason, we provide a vehicle-mounted LCM FPC for liquid crystal module backlight circuit board.

Disclosure of Invention

The invention aims to provide an FPC (flexible printed circuit) for a backlight circuit board of a vehicle-mounted LCM (liquid crystal module) so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a FPC for on-vehicle LCM liquid crystal module backlight circuit board, includes the FPC body, one side of FPC body is provided with connecting portion, just the outside interval in other one side of FPC body is provided with the extension, the end of extension is equipped with the golden finger, just the area that extension lateral wall was equipped with is glued electrically conductive cloth one side and is provided with two ground pin, be provided with the district of windowing on the extension, the locating hole has been seted up on the FPC body, stop gear is installed to extension lateral wall.

Furthermore, the limiting mechanism comprises a limiting plate, the limiting plate is movably connected with the side wall of the extension part through a discount, the limiting plate is of a strip-shaped structure with a polygonal cross section, a limiting clamping groove is formed in the limiting plate, the limiting clamping groove is of an arc-shaped structure and is formed along the side wall of the limiting plate in the length direction, a limiting hole is formed in the limiting plate, and the limiting hole penetrates through the surface of the limiting clamping groove.

Furthermore, the limiting plate is provided with a through hole matched with the positioning hole, the length of the limiting plate is matched with the extension part, and the width of the limiting plate is equal to one third of the width of the extension part.

Further, the windowing area comprises a copper foil, a base material film is arranged on the lower surface of the copper foil, an adhesive layer is arranged on the lower surface of the base material film, a covering layer is arranged on the lower surface of the adhesive layer, the windowing area is arranged on the upper portion of the extending portion, and the windowing area is of a frame structure.

Furthermore, the positioning holes are symmetrically formed along the FPC body, the number of the positioning holes is two, and the positioning holes are circular.

Furthermore, scribble insulating ink layer on the outer edge wall of windowing district, connecting portion are square piece structure, just it is fixed to bond between connecting portion and the FPC body.

Compared with the prior art, the invention has the beneficial effects that: the positioning hole is strong in universality, positioning holes are only needed to be designed at corresponding positions for various shapes of the FPC module, the production time is shortened in the assembling process, the production cost is reduced, the position of the FPC can be accurate, the dislocation phenomenon of the FPC module when a client installs the FPC is effectively improved, and the use effect is good.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a limiting mechanism of the present invention;

FIG. 3 is a schematic view of a structure of a windowing region according to the invention.

In the figure: 1. an FPC body; 2. a connecting portion; 3. an extension portion; 4. a golden finger; 5. a ground pin; 6. a windowing area; 61. copper foil; 62. a substrate film; 63. an adhesive layer; 64. a cover layer; 7. positioning holes; 8. a dust-proof sleeve; 9. a limiting mechanism; 91. a limiting plate; 92. discounts; 93. a limiting clamping groove; 94. and a limiting hole.

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a FPC for on-vehicle LCM liquid crystal module backlight circuit board, including FPC body 1, one side of FPC body 1 is provided with connecting portion 2, and FPC body 1 other one side is provided with extension 3 to the outside interval, the end of extension 3 is equipped with golden finger 4, and the 3 lateral walls of extension are equipped with take gluey electrically conductive cloth one side and be provided with two ground connection pins 5, be provided with windowing district 6 on the extension 3, locating hole 7 has been seted up on FPC body 1, stop gear 9 is installed to 3 lateral walls of extension.

Referring to fig. 2, the limiting mechanism 9 includes a limiting plate 91, the limiting plate 91 is movably connected to the side wall of the extending portion 3 by a discount 92, the limiting plate 91 has a strip-shaped cross section, a limiting slot 93 is formed in the limiting plate 91, the limiting slot 93 has an arc-shaped structure, the limiting slot 93 is formed along the side wall of the limiting plate 91 in the length direction, the limiting plate 91 is folded by the discount 92, and is limited and fixed on the mounting housing by the limiting slot 93 formed in the surface of the limiting plate 91, a limiting hole 94 is formed in the limiting plate 91, a positioning member is inserted into the limiting hole 94 for limiting the position of the FPC body 1, and the limiting hole 94 penetrates through the surface of the limiting slot 93.

Set up the perforation with locating hole 7 looks adaptation on the limiting plate 91, be convenient for install the location, and the length and the extension 3 phase-match of limiting plate 91, the width of limiting plate 91 equals the third of the 3 width of extension, under the effect prerequisite of guaranteeing spacing fixed, reduces production and processing cost as far as possible.

Referring to fig. 3, the windowing region 6 includes a copper foil 61, a substrate film 62 is disposed on a lower surface of the copper foil 61, an adhesive layer 63 is disposed on a lower surface of the substrate film 62, a cover layer 64 is disposed on a lower surface of the adhesive layer 63, the windowing region 6 is disposed on an upper portion of the extending portion 3, and the windowing region 6 is in a frame structure, so that the FPC body 1 is not torn when being bent.

The positioning holes 7 are symmetrically formed in the FPC body 1, the number of the positioning holes 7 is two, installation and positioning are facilitated, the positioning holes 7 are circular, and punching and machining are convenient.

The outer side edge wall of the windowing area 6 is coated with an insulating ink layer, so that the insulating effect of the FPC body 1 is enhanced, the connecting portions 2 are of square sheet structures, and the connecting portions 2 are fixedly bonded with the FPC body 1, so that the connecting portions 2 are convenient to assemble.

Example (b): when carrying out the installation of FPC liquid crystal display module, need counterpoint locating hole 7, limiting plate 91 turns over through discount 92 and turns over, and utilize the spacing draw-in groove 93 that its surface was seted up to be fixed in its spacing on the installation shell, insert the setting element in spacing hole 94 again, just can accurate control module FPC's accurate position, and locating hole 7 commonality is strong, to various shape module FPC only need in relevant position design locating hole 7 can, in the assembling process, shorten production man-hour, and the reduction in production cost, and can accurate FPC body 1's position, module FPC dislocation phenomenon when effectively improving customer installation.

The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a FPC for on-vehicle LCM liquid crystal module backlight circuit board, includes FPC body (1), its characterized in that: one side of FPC body (1) is provided with connecting portion (2), just FPC body (1) one side outside interval in addition is provided with extension (3), the end of extension (3) is equipped with golden finger (4), just take gluey electrically conductive cloth one side that extension (3) lateral wall was equipped with is provided with two ground connection pins (5), be provided with windowing area (6) on extension (3), locating hole (7) have been seted up on FPC body (1), stop gear (9) are installed to extension (3) a lateral wall.

2. The FPC for the backlight circuit board of the on-vehicle LCM liquid crystal module of claim 1, wherein: the limiting mechanism (9) comprises a limiting plate (91), the limiting plate (91) is movably connected with the side wall of the extension part (3) through a discount (92), the cross section of the limiting plate (91) is of a strip-shaped structure in a polygonal shape, a limiting clamping groove (93) is formed in the limiting plate (91), the limiting clamping groove (93) is of an arc-shaped structure, the limiting clamping groove (93) is formed in the length direction of the limiting plate (91), a limiting hole (94) is formed in the limiting plate (91), and the limiting hole (94) penetrates through the surface of the limiting clamping groove (93).

3. The FPC for the backlight circuit board of the on-vehicle LCM liquid crystal module of claim 2, wherein: the limiting plate (91) is provided with a through hole matched with the positioning hole (7), the length of the limiting plate (91) is matched with the extension part (3), and the width of the limiting plate (91) is equal to one third of the width of the extension part (3).

4. The FPC for the backlight circuit board of the on-vehicle LCM liquid crystal module of claim 1, wherein: the window opening area (6) comprises a copper foil (61), a base material film (62) is arranged on the lower surface of the copper foil (61), an adhesive layer (63) is arranged on the lower surface of the base material film (62), a covering layer (64) is arranged on the lower surface of the adhesive layer (63), the window opening area (6) is arranged on the upper portion of the extending portion (3), and the window opening area (6) is of a frame structure.

5. The FPC for the backlight circuit board of the on-vehicle LCM liquid crystal module of claim 1, wherein: the positioning holes (7) are symmetrically formed along the FPC body (1), the number of the positioning holes (7) is two, and the positioning holes (7) are circular.

6. The FPC for the backlight circuit board of the on-vehicle LCM liquid crystal module of claim 1, wherein: the outer side edge wall of the windowing area (6) is coated with an insulating ink layer, the connecting portion (2) is of a square sheet structure, and the connecting portion (2) and the FPC body (1) are fixedly bonded.