CN211063988U

CN211063988U - Display module

Info

Publication number: CN211063988U
Application number: CN201920418452.XU
Authority: CN
Inventors: 吴伟佳; 蔡培
Original assignee: Truly Semiconductors Ltd
Current assignee: Truly Semiconductors Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2020-07-21
Anticipated expiration: 2029-03-29

Abstract

The utility model discloses a display module, which integrates the key structure into the display module by electrically connecting the key structure with the FPC, so that the structure of the display module with the keys is simpler, and a client does not need to assemble the keys on a shell, thereby reducing the assembly difficulty; the problem of solution is, the button structure among the display module assembly among the prior art pastes on customer's casing, then is connected to the mainboard through the winding displacement on, and the structure is comparatively complicated and be unfavorable for customer's equipment.

Description

Display module

Technical Field

The utility model relates to a liquid crystal display technology field especially relates to a display module assembly.

Background

Some industrial control products may only need some simple keys to provide operation, and the membrane key is a common choice. The membrane button among the general display module assembly is pasted on customer's casing, then is connected to the mainboard through the winding displacement, and the structure is comparatively complicated and be unfavorable for customer's equipment.

SUMMERY OF THE UTILITY MODEL

The utility model provides a display module assembly, through with button structure and FPC electric connection to with the button structure integration to the display module assembly in, make the structure of the display module assembly of taking the button simpler, the customer need not assemble the button on the casing, reduces the equipment degree of difficulty.

The above technical purpose of the utility model is realized through following technical scheme:

a display module comprises an FPC, wherein a key structure is arranged on the FPC and comprises at least one key, and the key is electrically connected with an internal circuit of the FPC; the FPC back area corresponding to the key structure is provided with a reinforcing part.

By adopting the structure, the key structure is electrically connected with the FPC, so that the key structure is integrated into the display module, a user does not need to assemble keys on the shell, and the assembly difficulty is reduced; the FPC of the display module is soft, and is easy to deform when pressed after the keys are arranged; the reinforcing part is arranged on the back of the FPC, so that the deformation of the FPC is avoided, the sensitivity of the key structure is improved, and the reliability of the key structure is improved.

Preferably, the reinforcing part is a steel sheet.

By adopting the structure, the steel sheet is fixedly connected to the back of the FPC, the steel sheet is not easy to break, and the corrosion resistance is better.

The button structure further comprises a PET film, and the button is located on the PET film.

The PET film and the FPC are provided with at least one positioning hole at the corresponding position, and a positioning column is arranged in the positioning hole and used for connecting the key structure and the FPC.

Adopt above-mentioned structure, the PET film is with button structure and FPC electric connection, and the location is accurate, and PET film toughness is good, also can not damage through long-time tensile under the button structure, is favorable to improving display module's live time.

The key is further optimized to be connected with the FPC through the conductive double-sided adhesive tape.

By adopting the structure, the conductive double-sided adhesive tape is connected with the key and the FPC, the operation is simple and convenient, and the cost is saved.

Further preferably, the key is a snap key.

By adopting the structure, the Metal dome key (Metal dome array) is a PET sheet containing a Metal elastic sheet (Metal dome sheet), is used as a switch on an FPC (flexible printed circuit) board, and plays an important role of a touch switch between a user and an instrument; compared with the traditional silica gel key, the metal dome key has better hand feeling and longer service life, and can indirectly improve the production efficiency of various switches using the metal dome key. The metal elastic sheet on the metal dome key is positioned at the conductive part on the FPC, when the metal elastic sheet is pressed, the central point of the elastic sheet is concave downwards and contacts with a circuit on the FPC, so that a loop is formed, current passes through, and the display module executes corresponding operation.

To sum up, the utility model discloses following beneficial effect has:

the utility model provides a display module, through electrically connecting the button structure with FPC, thereby integrate the button structure into the display module, make the structure of the display module with button simpler, the customer need not assemble the button on the casing, reduce the difficulty of assembling; the problem of solution is, the button structure among the display module assembly among the prior art pastes on customer's casing, then is connected to the mainboard through the winding displacement on, and the structure is comparatively complicated and be unfavorable for customer's equipment.

Drawings

Fig. 1 is a schematic front view of a display module according to an embodiment of the present invention, which is mainly used for illustrating the FPC and the key structure.

Fig. 2 is a schematic left view of a display module according to an embodiment of the present invention.

Fig. 3 is an enlarged schematic view of the area a of fig. 2, and is mainly used for explaining the key and the reinforcement.

Reference numerals: 1. a display module; 2. FPC; 3. A key structure; 301. a PET film; 302. pressing a key; 4. positioning holes; 5. a reinforcing portion.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Examples

As shown in fig. 1-3, a display module 1 includes an FPC2, a key structure 3 is disposed on the FPC2, the key structure 3 includes at least one key 302, and the key 302 is electrically connected to an internal circuit of the FPC 2; the region of the back surface of FPC2 corresponding to key structure 3 is provided with a reinforcement portion 5. The key structure 3 is electrically connected with the FPC2, so that the key structure 3 is integrated into the display module 1, a user does not need to assemble keys on a shell, and the assembly difficulty is reduced; the FPC2 of the display module 1 is soft, and is easy to deform when being pressed after the keys 302 are arranged; the reinforcement part 5 is provided on the back surface of the FPC2, so that the FPC2 is prevented from being deformed, the sensitivity of the key structure 3 is improved, and the reliability of the key structure 3 is increased.

Preferably, the reinforcing part 5 is a steel sheet; the steel sheet is fixedly connected to the back of the FPC2, can be repeatedly bent and is not easy to break, and the corrosion resistance is good.

In a specific embodiment of the present invention, the key structure 3 further includes a PET film 301, and the key 302 is located on the PET film 301; at least one positioning hole 4 is formed in the corresponding position of the PET film 301 and the FPC2, and a positioning post (not shown) is disposed in the positioning hole 4 and used for connecting the key structure 3 and the FPC 2. PET film 301 is with button structure 3 and FPC2 electric connection, and the location is accurate, and PET film 301 toughness is good, also can not damage through long-time tensile under button structure 3, and simultaneously, PET film 301 can prevent that external pollutants such as dust from getting into FPC2 and button structure 3's interface, and the inner line that influences FPC2 is favorable to improving the live time of display module assembly 1.

In another embodiment of the present invention, the key 302 is connected to the FPC2 through a conductive double-sided tape (not shown in the figure); the conductive double-sided adhesive tape is connected with the key 302 and the FPC2, so that the operation is simple and convenient, and the cost is saved.

Preferably, the button 302 is a snap button. When the display module is pressed, the snap button is sunken and contacts with a circuit on the FPC2, so that a loop is formed, current passes through the loop, and the display module executes operation corresponding to the loop.

The above specific embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications of the present embodiments and the embodiments without inventive contribution as required after reading the present specification, but all the modifications are protected by patent law within the scope of the claims of the present invention.

Claims

1. A display module is characterized by comprising an FPC, wherein a key structure is arranged on the FPC and comprises a PET film and at least one key, the key is positioned on the PET film, and the key is electrically connected with an internal circuit of the FPC; the FPC back area corresponding to the key structure is provided with a reinforcing part.

2. The display module of claim 1, wherein the reinforcement is a steel sheet.

3. The display module assembly as claimed in claim 1, wherein the PET film and the FPC are provided with at least one positioning hole at a corresponding position, and the positioning hole is provided with a positioning post for connecting the key structure and the FPC.

4. The display module assembly of claim 1, wherein the key is connected to the FPC via a conductive double-sided tape.

5. The display module of claim 1, wherein the key is a snap key.