CN215954028U

CN215954028U - Electromagnetic touch liquid crystal display device

Info

Publication number: CN215954028U
Application number: CN202121603387.1U
Authority: CN
Inventors: 陈湃杰; 许明海; 李敏城
Original assignee: Shenzhen Hanwang Youji Technology Co ltd
Current assignee: Shenzhen Hanwang Youji Technology Co ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2022-03-04
Anticipated expiration: 2031-07-14

Abstract

The utility model discloses an electromagnetic touch liquid crystal display device which comprises a lower iron frame, an antenna plate, a reflecting sheet, a light guide plate, an optical membrane and a liquid crystal panel, wherein a circuit board used for welding LED lamps is integrated on the antenna plate, and the antenna plate is provided with the LED lamps connected with the circuit board. According to the utility model, the backlight lamp bar is integrated on the antenna board, so that the die sinking cost of the antenna board can be reduced, the original outgoing design production is changed into the autonomous design production, the entering of foreign matters and dust in the production process is effectively reduced, the production yield is improved, and the material management cost can be reduced.

Description

Electromagnetic touch liquid crystal display device

Technical Field

The application relates to the technical field of liquid crystal display, in particular to an electromagnetic touch liquid crystal display device.

Background

With the development of technology, liquid crystal display technology and related products thereof have become more and more popular. The electromagnetic touch liquid crystal display is a display technology capable of realizing human-computer interaction through touch, and the method for realizing the electromagnetic touch liquid crystal display on the liquid crystal display device is to add an electromagnetic antenna board on the basis of a liquid crystal display module to realize the electromagnetic touch function. In an electromagnetic touch liquid crystal display device, a backlight bar is one of necessary components, and in the existing electromagnetic touch liquid crystal display device, an LED lamp is basically connected to an LED lamp socket position on a Flexible Printed Circuit (FPC), and then a double-sided tape is attached to the surface of an electromagnetic antenna board to fix the LED lamp socket, so that the connection between the backlight bar and the electromagnetic antenna board is realized. However, the FPC for connecting the LED lamp in the existing connection method has a certain thickness, and the double-sided adhesive tape on the surface of the electromagnetic antenna board also has a certain thickness, which is not conducive to the thin design and is complicated in process; meanwhile, the steps are complicated, foreign matters and dust are easy to introduce, and the product yield is influenced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an electromagnetic touch liquid crystal display device, and through integrating backlight lamp strip on the antenna board, the thickness of electromagnetic touch liquid crystal display device has been reduced, has realized the slim design.

According to an aspect of the embodiments of the present application, an electromagnetic touch liquid crystal display device is provided, which includes: the antenna comprises an antenna plate, a circuit board and a circuit board, wherein the circuit board is integrated on the antenna plate and is used for welding an LED lamp;

and the LED lamp is connected with the antenna board.

The electromagnetic touch liquid crystal display device further comprises a lower iron frame, a reflecting sheet, a light guide plate, an optical membrane and a liquid crystal panel;

the first surface of the antenna plate is connected with the first surface of the lower iron frame;

the second surface of the antenna plate is connected with the first surface of the reflector plate, and the LED lamp is connected to the second surface of the antenna plate;

the second surface of the reflecting sheet is connected with the first surface of the light guide plate;

the second surface of the light guide plate is connected with the first surface of the optical film;

the second surface of the optical film is connected with the first surface of the liquid crystal panel.

The electromagnetic touch liquid crystal display device further comprises a lower iron frame, a light guide plate, an optical membrane and a liquid crystal panel;

the LED lamp is connected to the second surface of the antenna plate, and a reflecting film layer is attached to the second surface of the antenna plate;

the first surface of the light guide plate is connected with the reflecting film layer;

Wherein the wiring board includes a pad.

The circuit board comprises a bonding pad, and the reflecting film layer does not cover the bonding pad.

The embodiment of the utility model has the beneficial effects that: by integrating the backlight lamp bar on the antenna board, the die sinking cost of the FPC (flexible printed circuit) of the LED lamp bar can be removed, the original outgoing design production is changed into the independent design production, and the LED lamp bar has great benefits on improving the cost advantage and reducing the design production period; the antenna plate is integrated with the reflector plate, so that the thickness of the module can be effectively reduced, and the thin design is facilitated; the antenna plate and the backlight reflector are integrated, so that the production flow is optimized, and the assembly procedures are reduced; the production period is shortened, the time of the product assembly process is shortened, the exposure time of the product is effectively shortened, the entry of foreign matters, dust and other undesirable matters is reduced, and the production yield is improved; the antenna board is integrated with the backlight reflector, so that the die sinking cost of the reflector is reduced, and the material management cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an electromagnetic touch liquid crystal display device according to the present application.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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 application.

The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Fig. 1 is a schematic structural diagram of an electromagnetic touch-control liquid crystal display device according to the present application, and as shown in fig. 1, the electromagnetic touch-control liquid crystal display device according to the present embodiment includes a lower iron frame 101, an antenna plate 103, a reflective sheet 105, a light guide plate 106, an optical film 107, a liquid crystal panel 108, and an LED lamp 109. Wherein, a circuit board for welding the LED lamp 109 is integrated on the antenna plate 103; the LED lamp 109 is connected to the antenna board. A circuit board for welding the LED lamp 109 is integrated on the antenna board, and the LED lamp 109 connected with the circuit board is arranged on the antenna board 103. The upper and lower surfaces of the antenna board 103 are respectively provided with a double-sided adhesive tape 102 and a double-sided adhesive tape 104 for adhering and fixing components in contact with the upper and lower surfaces of the antenna board 103.

Note that, the first surface of the antenna plate 103 is connected to the first surface of the lower bezel 101; the second surface of the antenna plate 103 is connected with the first surface of the reflective sheet 105, and the LED lamp 109 is connected on the second surface of the antenna plate 103; the second surface of the reflective sheet 105 is connected with the first surface of the light guide plate 106; the second surface of the light guide plate 106 is connected to the first surface of the optical film 107; the second surface of the optical film 107 is connected to the first surface of the liquid crystal panel 108. A first surface of the antenna plate 103 is connected with a first surface of the lower iron frame 101; the LED lamp 109 is connected to the second surface of the antenna plate 103, and a reflective film layer is attached to the second surface of the antenna plate 103; the first surface of the light guide plate 106 is connected to the reflective film layer; the second surface of the light guide plate 106 is connected to the first surface of the optical film 107 sheet; the second surface of the optical film 107 is connected to the first surface of the liquid crystal panel 108.

Optionally, the lower bezel 101, the antenna plate 103, the reflective sheet 105, the light guide plate 106, the optical film 107, and the liquid crystal panel 108 are mechanically stacked. The mechanical stack structure is specifically an upper and lower stack structure as shown in fig. 1, and includes, in order from top to bottom, a lower bezel 101, a double-sided tape 102, an antenna board 103, a double-sided tape 104, a reflective sheet 105, a light guide plate 106, an optical film 107, and a liquid crystal panel 108. The lower iron frame 101 is used for fixing the whole electromagnetic touch liquid crystal display device; the double-sided adhesive tape is used for bonding adjacent components; the reflective sheet 105 is used to reflect the light exposed from the bottom surface back into the light guide plate, so as to improve the light use efficiency; the light guide plate 106 serves to convert a linear light source into a surface light source.

Optionally, the antenna board 103 is provided with a pad, and the LED lamp 109 is soldered on the pad. The bonding pad is a bonding pad welded between the LED lamp 109 and the circuit board, and is used for welding the LED lamp 103 and the circuit board, and the LED lamp 103 can be detached by melting a welding point on the bonding pad in a scene that the LED lamp 103 needs to be replaced, such as a failure. If the LED lamp is directly soldered on the circuit board, in the situation that the LED lamp 103 is out of order and needs to be replaced, the soldering point on the circuit board needs to be melted to detach the LED lamp 103, which easily causes the circuit board to be short-circuited. Especially, when the LED lamp 103 is replaced many times, the circuit board is likely to be damaged after being repeatedly soldered, and the circuit board is integrated in the antenna board 103, which may result in the whole antenna board being unusable. Therefore, the present embodiment can effectively reduce the maintenance cost by providing the soldering pads on the antenna board 103.

It should be noted that, in the prior art, a circuit board for soldering the LED lamp 109 is often designed on an outer surface of the antenna board 103, that is, the LED lamp socket and the antenna board 103 are adhered by an additional double-sided adhesive tape, wherein the circuit board for soldering the LED lamp 109 is included in the LED lamp socket, and then the LED lamp 109 is soldered on the LED lamp socket. This embodiment has integrateed LED circuit and pad at antenna panel 103 border, the circuit board integration that will be used for welding the LED lamp originally is in the antenna panel, be used for welding the circuit board of LED lamp and contain inside antenna panel 103, no longer need install the lamp stand, the step and the complexity that generate the installation, reduce module thickness, the production flow has been optimized, reduce the equipment process, shorten production cycle, reduce the time of product assembling process, effectively shorten the exposure time of product, reduce bad entering such as foreign matter dust, promote the production yields.

The terms "first," "second," "third," "fourth," and the like in the description of the application and the above-described figures, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. An electromagnetic touch liquid crystal display device, comprising:

the antenna comprises an antenna plate, a circuit board and a circuit board, wherein the circuit board is integrated on the antenna plate and is used for welding an LED lamp;

and the LED lamp is connected with the antenna board.

2. The electromagnetic touch liquid crystal display device according to claim 1, further comprising a lower bezel, a reflective sheet, a light guide plate, an optical film, and a liquid crystal panel;

3. The electromagnetic touch liquid crystal display device according to claim 1, further comprising a lower bezel, a light guide plate, an optical film, a liquid crystal panel;

4. The electromagnetic touch liquid crystal display device of claim 1, wherein the circuit board comprises a pad.

5. The electromagnetic touch liquid crystal display device of claim 3, wherein the circuit board comprises a pad, and the reflective film layer does not cover the pad.