CN216085409U

CN216085409U - LCM interface structure

Info

Publication number: CN216085409U
Application number: CN202121477437.6U
Authority: CN
Inventors: 贺建文
Original assignee: Fuzhou Lianchuang Electronic Co ltd
Current assignee: Fuzhou Lianchuang Electronic Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-03-18
Anticipated expiration: 2031-06-30

Abstract

The utility model provides an LCM interface structure, which comprises an FPC substrate, wherein the FPC substrate comprises a front surface and a back surface, the front surface of the FPC substrate is provided with an inserting region, a golden finger is arranged in the inserting region, the LCM interface structure also comprises at least two inspection block bodies, the inspection block bodies are positioned in the inserting region, the inspection block bodies are attached and abutted to the side part of the golden finger, the back surface of the FPC substrate is provided with an anti-interference layer, and the anti-interference layer corresponds to the position of the golden finger. According to the LCM interface structure provided by the utility model, the inspection block body is added on the side part of the golden finger, so that the purpose of simply and quickly judging whether the punched product is qualified enough can be realized, and meanwhile, the interference of an interference signal on a display signal can be effectively avoided due to the arrangement of the interference prevention layer.

Description

LCM interface structure

Technical Field

The utility model relates to the field of liquid crystal display modules, in particular to an LCM interface structure.

Background

With the continuous development of the electronic industry, the Liquid Crystal display technology is becoming more mature, and the Liquid Crystal Module (LCM) is also being improved and perfected.

The LCM is a component which assembles a liquid crystal display device, a connecting piece, peripheral circuits such as a control circuit, a drive circuit and the like, a circuit board, a backlight source, a structural part and the like together, the circuit board is generally used as an interface in the LCM to connect other main boards, the circuit board needs to be punched in the production process of the LCM interface, and because the golden fingers on the circuit board are cut off in the punching process to cause incomplete phenomenon, the golden fingers need to be measured after punching so as to eliminate products with partial golden fingers cut off, thus not only increasing the workload of workers, but also having higher measurement precision requirement and more complicated measurement operation.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims to provide an LCM interface structure to solve the problems that in the prior art, when an FPC is produced, a gold finger is cut off and is difficult to find, and meanwhile, gaps exist in latticed copper arranged on the FPC, so that interference signals cannot be shielded.

The utility model provides a LCM interface structure, includes the FPC base plate, the FPC base plate includes openly and the back, the front of FPC base plate is provided with the grafting region, be provided with the golden finger in the grafting region, still include two at least inspection blocks, the inspection block is located in the grafting region, just the inspection block with the lateral part laminating of golden finger is contradicted, the back of FPC base plate is provided with the jam-proof layer, the jam-proof layer with the golden finger position corresponds.

The utility model has the beneficial effects that: add the inspection block at the lateral part of golden finger, whether the inspection block exists in the product through observing die-cut, whether this golden finger that comes in the product is complete, when the inspection block exists, it is complete to explain the golden finger, regard as the yields, when the inspection block does not exist, directly get rid of, this kind of mode has not only improved inspection efficiency, still be favorable to saving certain manpower resources, reduce certain work load, set up the jam-proof layer at FPC's back simultaneously, be favorable to avoiding interference signal to disturb display signal, make the problem that the demonstration imaging effect is not good.

Preferably, the number of the inspection block bodies is two, the two inspection block bodies are respectively located on two opposite sides of the golden finger, and one inspection block body is symmetrically arranged with the symmetry axis of the golden finger.

Preferably, the material of the inspection block is metal copper.

Preferably, solid copper is paved on the anti-interference layer, and the area of the anti-interference layer is not smaller than that of the golden finger.

Preferably, the anti-interference layer is provided with at least one protrusion made of metal copper, and the protrusion is integrated with the anti-interference layer through pouring.

Preferably, the gold finger comprises a plurality of pins, the pins extend out of the plugging area to form an extension portion, the LCM interface structure further comprises a plurality of signal transmission lines, and the signal transmission lines are connected with the pins in a one-to-one correspondence manner through the extension portion.

Preferably, a circuit is arranged on the windowing layer, the circuit comprises a plurality of conductive wires, and the length of the extending part is greater than 0.5 MM.

Preferably, the number of the protrusions is two, the two protrusions are respectively located on two opposite sides of the anti-interference layer, and the two protrusions are located at one end, close to the extension portion, of the anti-interference layer.

Preferably, the diameter of the signal transmission line is smaller than the diameter of the pin, and the diameter of the extension part is the same as the diameter of the pin.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

Fig. 1 is a schematic front view of an LCM interface structure according to an embodiment of the present invention;

fig. 2 is a schematic rear view of an LCM interface structure according to an embodiment of the present invention.

Description of the main element symbols:

the following detailed description will further illustrate the utility model in conjunction with the above-described figures.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Several embodiments of the utility model are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 2, an LCM interface structure according to an embodiment of the present invention is shown, including an FPC substrate 10 and a test block 20.

Wherein: the FPC substrate 10 comprises a front surface and a back surface, the front surface of the FPC substrate 10 is provided with an inserting region 11, the inserting region 11 is internally provided with two gold fingers 12, two inspection blocks 20 are respectively made of metal copper, the two inspection blocks 20 are respectively positioned in the inserting region 11 and are respectively positioned at two opposite sides of the gold fingers 12, the two inspection blocks 20 are symmetrically arranged by a symmetry axis of the gold fingers 12, the side wall of the inspection block 20 facing the gold fingers 12 is abutted with the side part of the gold fingers 12, it should be noted that when two inspection blocks 20 are still arranged on a punched product, the gold fingers 12 on the product are proved to be complete and are regarded as qualified products, if only one inspection block 20 is stored or no inspection block 20 is stored, the gold fingers 12 are represented to be partially cut, and the contact is poor due to the incomplete gold fingers 12 attached to the product when a client installs the product, an anomaly is indicated and this is therefore considered to be a reject product.

In this embodiment, as shown in fig. 1 and fig. 2, it should be noted that an anti-interference layer 13 is disposed on the back surface of the FPC substrate 10, the position of the anti-interference layer 13 corresponds to the position of the gold finger 12, in order to ensure that the display signal is not interfered at all, the area of the anti-interference layer 13 is larger than the area of the gold finger 12, a layer of real copper is laid on the anti-interference layer 13 to isolate the interference signal, in this embodiment, two protrusions 14 are disposed on the anti-interference layer 13, the two protrusions 14 are disposed on two opposite sides of the anti-interference layer 13 respectively and are symmetrically disposed on the symmetry axis of the anti-interference layer 13, the two protrusions 14 are integrated with the anti-interference layer 13 by pouring, and it can be understood that the two protrusions 14 are made of metal copper.

In this embodiment, as shown in fig. 1, it should be noted that the gold finger 12 includes a plurality of pins, the plurality of pins extend to outside the plugging region 11 to form an extension portion 30, a diameter of the extension portion 30 is the same as a diameter of the pins, and a length of the extension portion 30 is greater than 0.5MM, the LCM interface structure further includes a plurality of signal transmission lines 40, a diameter of the signal transmission lines 40 is smaller than the diameter of the pins, the signal transmission lines 40 are connected to the pins through the extension portion 30 in a one-to-one correspondence manner, it should be noted that, in the existing LCM interface, the connection between the signal transmission lines 40 and the gold finger 12 is easily broken due to uneven stress during a long-term plugging process, and the arrangement of the extension portion 30 can reduce the possibility of breaking at the connection, so as to prolong a service life of the LCM interface.

In specific implementation, the two sides of the golden finger 12 are respectively provided with the inspection blocks 20, the inspection blocks 20 are attached to and abutted against the side portions of the golden finger 12, when the golden finger 12 of the obtained product is judged to be complete or not after punching, only the two inspection blocks 20 are required to be observed, if the two inspection blocks 20 are both present, the golden finger 12 is proved to be complete, the obtained product is considered to be qualified, otherwise, if one inspection block 20 is absent or absent, the obtained product is considered to be unqualified, the judging mode is simple, quick and accurate, not only can certain manpower resources be saved, the workload of workers is reduced, but also the obtained product is ensured to be qualified, meanwhile, the method is different from the existing latticed copper, the real copper is laid on the back side of the golden finger 12, the interference of interference signals to display signals can be effectively avoided, and in the packaging process, the golden finger 12 extends to the outside of the plugging area 11 and is connected with the signal transmission line 40, so that the connection part of the golden finger 12 and the signal transmission line 40 is not easy to break, and the service life of the LCM interface is prolonged.

It should be noted that the above implementation process is only for illustrating the applicability of the present application, but this does not mean that the LCM interface structure of the present application has only the above implementation flow, and on the contrary, the LCM interface structure of the present application can be incorporated into the feasible embodiments of the present application as long as the LCM interface structure of the present application can be implemented.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a LCM interface structure, includes the FPC base plate, the FPC base plate includes openly and the back, the front of FPC base plate is provided with the grafting region, be provided with the golden finger in the grafting region, its characterized in that still includes two at least inspection blocks, the inspection block is located in the grafting region, just the inspection block with the lateral part laminating of golden finger is contradicted, the back of FPC base plate is provided with the jam-proof layer, the jam-proof layer with the golden finger position corresponds.

2. The LCM interface structure of claim 1, wherein there are two inspection blocks, two inspection blocks are located on opposite sides of the golden finger, and one inspection block is located symmetrically to the axis of symmetry of the golden finger.

3. The LCM interface structure of claim 1, wherein the proof mass is copper.

4. The LCM interface structure of claim 1, wherein the interference prevention layer is laid with solid copper, and the area of the interference prevention layer is not smaller than that of the golden finger.

5. The LCM interface structure of claim 1, wherein the interference prevention layer is provided with at least one protrusion made of copper, and the protrusion is integrated with the interference prevention layer by casting.

6. The LCM interface structure of claim 5, wherein the gold finger comprises a plurality of pins extending beyond the plugging area to form an extension, and further comprising a plurality of signal transmission lines electrically connected with the gold finger through the extension.

7. The LCM interface structure of claim 6, wherein the extension has a length greater than 0.5 MM.

8. The LCM interface structure of claim 6, wherein two protrusions are provided, and the two protrusions are located on opposite sides of the tamper-proof layer, and both protrusions are located at an end of the tamper-proof layer adjacent to the extension.

9. The LCM interface structure of claim 6, wherein the signal transmission line has a diameter smaller than a diameter of the pin, and the extension has a diameter the same as the diameter of the pin.