CN216351640U

CN216351640U - LCM module

Info

Publication number: CN216351640U
Application number: CN202122468423.4U
Authority: CN
Inventors: 贺建文
Original assignee: Wannian Lianchuang Display Technology Co ltd
Current assignee: Wannian Lianchuang Display Technology Co ltd
Priority date: 2021-10-13
Filing date: 2021-10-13
Publication date: 2022-04-19
Anticipated expiration: 2031-10-13

Abstract

The utility model provides an LCM (liquid Crystal Module), which is applied to a mainboard, wherein a touch device area is arranged on the mainboard, the LCM comprises a flexible circuit board and a display screen, the flexible circuit board is provided with the display device area, the display device area and the touch device area are independently arranged and do not interfere with each other, the touch device area is connected with a touch circuit board, the touch circuit board is electrically connected with the flexible circuit board through a first connector, and the display screen is electrically connected with the flexible circuit board through a second connector. According to the LCM provided by the utility model, the touch control circuit board is connected with the flexible circuit board by the first connector, so that the touch control part and the display part share one flexible circuit board, namely, the touch control and display functions are realized by one flexible circuit board.

Description

LCM module

Technical Field

The utility model relates to the technical field of LCM modules, in particular to an LCM module.

Background

The flexible printed circuit board is a flexible printed circuit board which is made of polyimide or polyester film as a base material and has high reliability and excellent performance. The flexible printed circuit board or FPC has the characteristics of high wiring density, light weight and thin thickness, and is widely applied to a plurality of products such as mobile phones, notebook computers, PDAs, digital cameras, LCM modules and the like.

In a mobile phone motherboard, a plurality of FPCs are usually provided, and different FPCs are used for realizing different functions, for example, a touch FPC is needed for realizing a touch function, and a display FPC is needed for realizing a display function, and connection of signal lines such as a microphone and a motor on a client motherboard is also realized through a single FPC.

SUMMERY OF THE UTILITY MODEL

Therefore, the present invention is directed to provide an LCM module, so as to solve the problems in the prior art that a plurality of FPCs are crossed in a limited space of a main board area of a mobile phone, which is very likely to cause signal interference, and a space needs to be increased to arrange the plurality of FPCs, thereby increasing the production cost.

The LCM comprises a flexible circuit board and a display screen, wherein the flexible circuit board is provided with a display device area, the display device area and the touch device area are independently arranged and do not interfere with each other, the touch device area is connected with a touch circuit board, the touch circuit board is electrically connected with the flexible circuit board through a first connector, and the display screen is electrically connected with the flexible circuit board through a second connector.

The utility model has the beneficial effects that: the touch control circuit board electrically connected with the touch control device area is connected with the flexible circuit board through the first connector, so that the touch control part and the display part share one flexible circuit board, namely, touch control and display functions are realized through one flexible circuit board.

Preferably, a microphone and a motor are installed on the main board, signal lines are respectively connected to the microphone and the motor, and the microphone and the motor are electrically connected to the flexible circuit board through the signal lines and part of interfaces of the second connector.

Preferably, the touch device area comprises a plurality of components, a dot glue layer is arranged around each component, and the height of the dot glue layer is lower than that of the component.

Preferably, a high-temperature adhesive tape is pasted on the surface of the component, and the thickness of the high-temperature adhesive tape is 0.05 MM.

Preferably, a reinforcing layer is arranged on the front surface of the touch circuit board, and the thickness of the reinforcing layer is 0.03 MM.

Preferably, the flexible circuit board is electrically connected with a third connector, the third connector is located on the back face of the flexible circuit board, a reinforcing steel sheet is arranged on the position, corresponding to the third connector, of the flexible circuit board, and the thickness of the reinforcing steel sheet is 0.4 MM.

Preferably, be provided with first bending zone, second bending zone and third bending zone on the flexible circuit board, first bending zone is located the top in display device district, the second bending zone is located directly over the second connector, the third bending zone is located the top of third connector, just the second bending zone with the third bending zone all is located the below in display device district.

Preferably, the back surface of the first bending area is coated with green oil, and the second bending area and the third bending area are respectively coated with grid copper.

Preferably, a touch grounding area is further arranged on the flexible circuit board, an insulating layer covers the surface of the touch grounding area, and the insulating layer is a mylar sheet.

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 partial front view of an LCM module according to an embodiment of the utility model;

fig. 2 is a partial rear view of an LCM module according to an embodiment of the utility model.

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, the LCM module according to the embodiment of the utility model is applied to a main board 10, and includes a flexible circuit board 20 and a display screen.

Wherein: the main board 10 is provided with a touch device area 11, the flexible circuit board 20 is electrically connected with a display device area 21, the display device area 21 and the touch device area 11 are independent and do not interfere with each other, the touch device region 11 is located at a side portion of the display device region 21, the touch device region 11 is connected to a touch circuit board 111, the touch circuit board 111 is electrically connected to the flexible circuit board 20 through the first connector 30, thereby achieving the purpose that one flexible circuit board 20 can realize two functions of touch control and display, and being different from the prior art, reducing one flexible circuit board 20 in the limited space of the main board 10 area, not only saving space, but also reducing the risk of signal interference, as can be understood, in the present embodiment, the display screen is electrically connected to the flexible circuit board 20 through the second connector 40, and the first connector 30 is located between the touch device area 11 and the display device area 21.

In this embodiment, a microphone and a motor are further installed on the main board 10, the microphone and the motor are respectively connected with signal lines, it should be noted that the signal lines are connected with part of interfaces of the second connector 40, so that the microphone and the motor are respectively connected with the flexible circuit board 20, the second connector 40 is located below the touch device region 11, that is, below the display device region 21, it can be understood that the second connector 40 needs to select a connector with more interfaces, so that the display screen, the microphone and the motor can be connected with the flexible circuit board 20 through the second connector 40, and each function is realized only through the flexible circuit board 20, thereby saving space and reducing production cost, and meanwhile, the phenomenon that a plurality of FPCs are crossed together in a limited space of the main board 10 region can be avoided.

In this embodiment, the touch device area 11 needs to be sealed, and it can be understood that the touch device area 11 includes a plurality of components, and the specific sealing manner is to form a dispensing layer by dispensing around the components, where the dispensing layer is lower than the components, and a high temperature adhesive tape is attached to the surface of the components, where the thickness of the high temperature adhesive tape is 0.05MM, and it should be noted that a reinforcing layer is fixedly disposed on the front surface of the touch circuit board 111, and the thickness of the reinforcing layer is 0.03 MM.

In this embodiment, the flexible circuit board 20 is electrically connected to a third connector 50, the third connector 50 is located on the back side of the flexible circuit board 20, a reinforcing steel sheet is fixedly arranged on the flexible circuit board 20 at a position corresponding to the third connector 50, and the thickness of the reinforcing steel sheet is 0.4MM, it should be noted that the first connector 30 and the second connector 40 are both located on the front side of the flexible circuit board 20.

In this embodiment, the flexible circuit board 20 is further provided with three bending regions, which are a first bending region 22, a second bending region 23, and a third bending region 24, where the first bending region 22 is located at the upper end of the flexible circuit board 20 and above the display device region 21, the second bending region 23 is located right above the second connector 40, and the third bending region 24 is located above the third connector 50, and it should be noted that the second bending region 23 and the third bending region 24 are both located below the display device region 21. It will be appreciated that the back of the first bending region 22 is coated with green oil to soften the first bending region 22, and the second bending region 23 and the third bending region 24 are covered with mesh copper to increase softness.

In this embodiment, the flexible circuit board 20 is further provided with a touch ground area 25, and the surface of the touch ground area 25 is covered with an insulating layer, where the insulating layer is an insulating mylar film.

In specific implementation, the touch circuit board 111 electrically connected to the touch device region 11 is connected to the flexible circuit board 20 through the first connector 30, so that the touch portion and the display portion are connected to the same flexible circuit board 20, and then the microphone and the motor mounted on the motherboard 10 are connected to part of the interface of the second connector 40, so that the microphone, the motor, and the display screen are electrically connected to the flexible circuit board 20 through the second connector 40, thereby achieving the purpose of implementing the functions of the touch portion, the display portion, and the microphone through only one flexible circuit board 20.

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 module of the present application has only the above implementation flow, and on the contrary, the LCM module of the present application can be incorporated into the feasible embodiments of the present application as long as the LCM module 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 LCM is characterized by comprising a flexible circuit board and a display screen, wherein the flexible circuit board is provided with a display device area, the display device area and the touch device area are independently arranged and do not interfere with each other, the touch device area is connected with a touch circuit board, the touch circuit board is electrically connected with the flexible circuit board through a first connector, and the display screen is electrically connected with the flexible circuit board through a second connector.

2. The LCM module of claim 1, wherein a microphone and a motor are mounted on the main board, and signal lines are connected to the microphone and the motor respectively, and are connected to a part of the interface of the second connector through the signal lines, so that the microphone and the motor are electrically connected to the flexible circuit board respectively.

3. The LCM module of claim 1, wherein the touch device area comprises a plurality of components, a spot glue layer is arranged around each component, and the height of the spot glue layer is lower than that of the component.

4. The LCM module of claim 3, wherein the surface of the component is pasted with a high temperature adhesive tape, and the thickness of the high temperature adhesive tape is 0.05 MM.

5. The LCM of claim 1, wherein a reinforcing layer is disposed on the front surface of the touch circuit board, and the thickness of the reinforcing layer is 0.03 MM.

6. The LCM module of claim 1, wherein a third connector is electrically connected to the flexible circuit board and located on the back of the flexible circuit board, and a reinforcing steel sheet is arranged on the flexible circuit board at a position corresponding to the third connector, wherein the thickness of the reinforcing steel sheet is 0.4 MM.

7. The LCM set of claim 6, wherein the flexible circuit board is provided with a first bending region, a second bending region and a third bending region, the first bending region is located above the display device region, the second bending region is located directly above the second connector, the third bending region is located above the third connector, and the second bending region and the third bending region are both located below the display device region.

8. The LCM set as claimed in claim 7, wherein the back surface of the first bending area is coated with green oil, and the second bending area and the third bending area are respectively coated with grid copper.

9. The LCM module of claim 1, wherein the flexible circuit board is further provided with a touch ground area, the surface of the touch ground area is covered with an insulating layer, and the insulating layer is a Mylar film.