CN112927614B - Electronic device and display device - Google Patents

Abstract

The embodiment of the present application discloses a display device, which includes an NFC module and a backlight module. The NFC module includes an NFC coil and an NFC ferrite. The backlight module includes a diffusion layer and a first insulating layer stacked in sequence. layer and located within the first insulating layer, and the NFC ferrite is arranged on the side of the diffusion layer facing away from the NFC coil. This structure enables the NFC module to be embedded in the backlight module, thereby avoiding the overlap of the NFC module on the display device. Occupation, and reduce the thickness of the display device, which is conducive to the development of the display device to light and thin, the application also discloses an electronic device.

Description

Electronic equipment and display devices

technical field

The present application relates to the field of electronic equipment, in particular to electronic equipment and a display device.

Background technique

With the improvement of user requirements, more and more functional modules are configured in electronic equipment. These functional modules can make the electronic equipment more and more functions, and thus can meet more usage demands of users.

In related technologies, an electronic device is configured with a near field communication (Near Field Communication, NFC) module. The NFC module can enable the electronic device to have a short-range wireless communication function. In this case, electronic devices can be used for payment, motion monitoring, access control, etc. Obviously, this can further expand the application scenarios of electronic devices.

In the related art, the electronic equipment is equipped with a display module, and the NFC module is attached to the back of the display module (ie, the surface opposite to the display surface of the display module), so as to realize the stacked installation of the NFC module and the display module. However, such an assembly structure will result in a relatively large thickness of the electronic device, which cannot meet the demand for thinner electronic devices.

Contents of the invention

The present invention provides a display device to solve the problem of increased thickness caused by NFC modules occupying the stacking space of the display device.

In one aspect, the present application discloses a display device, including an NFC module and a backlight module, wherein: the NFC module includes an NFC coil and an NFC ferrite; the backlight module includes sequentially stacked diffusion layers and a first An insulating layer, the NFC coil is disposed on the diffusion layer and located inside the first insulating layer, and the NFC ferrite is disposed on a side of the diffusion layer facing away from the NFC coil.

In another aspect, the present application discloses an electronic device including the display device.

The beneficial effects of the present invention are as follows:

In this application, by optimizing the structure of the display device, the NFC coil is arranged on the diffusion layer and within the first insulating layer, and then the NFC module is embedded in the display device, thereby avoiding the occupation of the stacking space of the display device by the NFC module. And reducing the thickness of the display device is conducive to the development of the display device to be thinner and lighter, and ultimately beneficial to the design of electronic equipment in a thinner direction.

Description of drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application. In the attached picture:

FIG. 1 is a layout diagram of an NFC module in a display device disclosed in an embodiment of the present invention;

Figure 2 is an enlarged view of the I place of Figure 1 disclosed by the embodiment of the present invention;

Fig. 3 is the M-M direction sectional view of Fig. 1 disclosed by the embodiment of the present invention;

Fig. 4 is a structural diagram of the light source component layer disclosed by the embodiment of the present invention.

Explanation of reference signs:

100-NFC module,

110-NFC coil, 111-first coil end, 112-second coil end,

120-NFC ferrite, 121-Protruding ring,

200-backlight module, 200a-display area, 200b-non-display area,

210-reflection layer,

220-light source component layer, 221-light guide layer, 222-light source, 223-reflector,

230-diffusion layer, 231-end outer edge, 232-first electrode sheet, 233-second electrode sheet,

240-first insulating layer, 250-first protective layer, 260-brightening layer,

300-the first flexible circuit board, 400-bridging traces, 500-glue.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

As shown in FIG. 3 , the display device disclosed in this application includes an NFC module 100 and a backlight module 200 . Wherein: the NFC module 100 includes an NFC coil 110 and an NFC ferrite 120 . The backlight module 200 includes a diffusion layer 230 and a first insulating layer 240 stacked in sequence. The NFC coil 110 is disposed on the diffusion layer 230 , and the NFC coil 110 is located within the first insulating layer 240 , and the NFC ferrite 120 is disposed on a side of the diffusion layer 230 facing away from the NFC coil 110 .

The display device disclosed in the embodiment of the present application includes a display screen, which is stacked on the backlight module 200 and functions as a display under the backlight provided by the backlight module 200 .

In the present application, the diffusion layer 230 performs diffusion treatment on the backlight emitted by the backlight module 200 , so that the backlight is uniformly diffused before being emitted, so as to achieve a better luminous effect. The first insulating layer 240 provides insulation protection for the NFC module 100 and prevents it from being short-circuited.

The function of the NFC module 100 is to play the NFC function. In specific work projects, the NFC ferrite 120 focuses the magnetic flux to effectively increase the sensing distance by increasing the magnetic field strength, and the NFC coil 110 is used to generate NFC signals. In this application, by disposing the NFC coil 110 on the diffusion layer 230 and embedding it in the first insulating layer 240, the NFC coil 110 does not need to occupy a separate stacking space, thereby avoiding the occupation of the stacking space of the backlight module 200 by the NFC module 100, It can effectively reduce the thickness of the display device of the present application. According to the statistics of the test data, the design method of adapting the NFC module 100 and the backlight module 200 of the present application can reduce the thickness of the display device by about 300 μm, which is conducive to the development of the display device towards thinner and thinner. It is conducive to the design of electronic equipment in a thinner direction.

In terms of specific process implementation, the NFC coil 110 can be attached on the diffusion layer 230 by vapor deposition first, and then the first insulating layer 240 can be stacked on the diffusion layer 230 by vapor deposition, and the NFC coil 110 It is in the first insulating layer 240 to realize the assembly of the display device of the present application. The specific material selection of NFC coil 110 can be transparent ITO, nano-silver, TiAlTi, etc. As an alternative process, ITO and TiAlTi can be disposed on the diffusion layer 230 by magnetron sputtering, while nano-silver can be coated with a coating solution. The method is disposed on the diffusion layer 230.

Furthermore, the NFC coil 110 can be set as a transparent wiring, so as to further increase the screen-to-body ratio. At the same time, the NFC coil 110 can flexibly adjust the proportion of transparent metal components by using the evaporation process to adapt to different working scenarios.

In a more specific embodiment, as shown in FIG. 1 and FIG. 3, the NFC coil 110 extends along the edge of the backlight module 200 and is arranged in multiple circles. The backlight module 200 includes a display area 200a and a non-display area 200b. The non-display area 200b is arranged around the display area 200a, a part of the NFC coil 110 is located in the display area 200a, and another part of the NFC coil 110 is located in the non-display area 200b. Such a layout can effectively prevent the NFC coil 110 from entering the center of the display area 200a to reduce the screen-to-body ratio, and the regular routing is also beneficial to avoid the problem of the card reading flickering screen.

In some embodiments, as shown in FIG. 1 and FIG. 2, the NFC coil 110 includes a first coil end 111 adjacent to the center of the backlight module 200 and a second coil end 112 adjacent to the edge of the backlight module 200, and the display device further Including the first flexible circuit board 300, the first end of the first flexible circuit board 300 is connected to the edge of the backlight module 200, and is electrically connected to the second coil end 112, and the first coil end 111 is connected to the first The flexible circuit board 300 is electrically connected.

The design of the first flexible circuit board 300 can transmit the NFC signal generated by the NFC module 100 to an external chip to complete the signal transmission. The first flexible circuit board 300 is arranged on the edge of the backlight module 200, and the layout mode of connecting the first coil end 111 and the second coil end 112 at the same time with the bridging wiring 400 can ensure that the first flexible circuit board 300 can effectively transmit NFC. Signals are kept away from the center of the backlight module 200 to avoid interfering with the work of the backlight module 200 .

In some embodiments, as shown in FIG. 3 , the backlight module 200 further includes a first protective layer 250 , and the diffusion layer 230 , the first insulating layer 240 and the first protective layer 250 are stacked in sequence. A first portion of the bridge wire 400 is disposed in the first insulating layer 240 , and a second portion of the bridge wire 400 is disposed in the first protective layer 250 .

Here, the first protective layer 250 can be selected according to different working scenarios, such as using an organic photoresist layer to prevent water and oxygen corrosion, or selecting the first protective layer 250 to use the same material as the first insulating layer. 240 made of the same material to provide insulation protection.

The bridging wiring 400 is partly located in the first insulating layer 240, which can realize the connection to the first coil end 111 while keeping a distance from other parts of the NFC coil 110, so that the first insulating layer 240 can prevent the bridging wiring 400 from being connected to the NFC coil. 110; the first part of the bridge wire 400 is arranged in the first insulating layer 240, and the second part of the bridge wire 400 is arranged in the first protective layer 250, so that the bridge wire 400 can be embedded in the first between the insulating layer 240 and the first protective layer 250 to prevent the overlapping space of the backlight module 200 from being occupied by the bridging wires 400 , and to further thin the display device.

More specifically, as shown in FIG. 3 , the backlight module 200 further includes a light source assembly layer 220 . The light source component layer 220 is stacked on the side of the diffusion layer 230 facing away from the first insulating layer 240 , and is located between the NFC ferrite 120 and the diffusion layer 230 .

In this application, the light source component layer 220 is used to emit light, and is the core component of the backlight module 200 , and the backlight module 200 achieves the purpose of emitting light through the light source component layer 220 .

As shown in FIG. 3 and FIG. 4 , for the specific structure of the light source component layer 220 , it can be set that the light source component layer 220 includes a light guide layer 221 and a light source 222 . The light source 222 is arranged on one side of the light guide layer 221, and the light source module layer 220 is stacked on the diffusion layer 230 through the light guide layer 221. The first part of light emitted by the NFC ferrite 120 . Since the overall area of the light guide layer 221 is larger than that of the light source 222, the light source module layer 220 will eventually emit light in the form of a surface light source, which will make the light more uniformly emitted through the light guide layer 221, and the luminous effect will be better.

More specifically, the light source component layer 220 may further include a reflector 223 . The reflector 223 covers the light source 222 and is opposite to the light guide layer 221 . The reflector 223 is provided with a reflection port facing the light guide layer 221 . The light emitted by the light source 222 is reflected by the reflection cover 223 and enters the light guide layer 221 through the reflection opening.

In this way, the light emitted by the light source 222, in addition to the light that directly enters the light guide layer 221, also has a part of the light that will enter the light guide layer 221 through the reflection port after being reflected by the reflector 223, so that the incident light can be The light of the layer 221 is increased, thereby enhancing the brightness of the light emitted from the light guide layer 221 , and at the same time, the utilization rate of light can be improved.

In some embodiments, as shown in FIG. 3 , the backlight module 200 may further include a reflective layer 210 , and the reflective layer 210 is stacked between the NFC ferrite 120 and the light source component layer 220 . The light emitted by the light source 222 will enter the light guide layer 221 , and emit a second part of the light toward the reflective layer 210 through the light guide layer 221 . After the second part of light is reflected by the reflective layer 210, it will be emitted toward the direction of the first part of light. In this way, through the setting of the reflective layer 210, the second part of the light can be reflected to the light output direction of the backlight module 200, that is, the first part of the light and the second part of the light are merged and emitted in the same direction, and the brightness of the light emitted by the backlight module 200 can be enhanced. , thereby improving the utilization of light.

In some embodiments, as shown in FIGS. 2 and 3 , the diffusion layer 230 includes an outer edge 231 at the end. The first insulating layer 240 forms a first projection on the diffusion layer 230 , and the outer edge 231 of the end portion forms a second projection on the diffusion layer 230 . The first projection is coplanar with the second projection and is located on one side of the second projection. A first electrode sheet 232 and a second electrode sheet 233 are fixed on the surface of the outer edge 231 of the end facing the display direction of the backlight module 200, and the first end of the first flexible circuit board 300 is used for contacting the first electrode sheet 232 and the second electrode sheet. The sheet 233 is electrically connected, the first coil end 111 is electrically connected to the first electrode sheet 232 through the bridging wire 400 , and the second coil end 112 is electrically connected to the second electrode sheet 233 . The second end of the first flexible circuit board 300 is used for electrical connection with the main board of the electronic device.

In this way, the first electrode piece 232 and the second electrode piece 233 can be fully exposed through the setting of the outer edge 231 of the end, thereby facilitating the connection between the NFC coil 110 and the first flexible circuit board 300 , and through the first electrode piece 232 And the second electrode piece 233 is used as an intermediate transmission medium, which is more conducive to the transmission of the signal generated by the NFC coil 110 to the first flexible circuit board 300 .

In terms of specific material selection, both the first electrode sheet 232 and the second electrode sheet 233 can be made by using such as ITO, nano-silver, TiAlTi, etc. In terms of specific process means selection, it can also be arranged on the diffusion layer 230 by vapor deposition. s surface.

Furthermore, the backlight module 200 further includes a light enhancement layer 260 stacked on the side of the first protective layer 250 facing away from the first insulating layer 240 . The light enhancement layer 260 has a light concentrating effect. After the light emitted by the light source component layer 220 is uniformly diffused by the diffusion layer 230 , the brightness is increased by the light enhancement layer 260 to further enhance the luminous effect of the light source component layer 220 .

Further, as shown in FIG. 3 , the first end of the first flexible circuit board 300 is overlapped and fixed on the first electrode sheet 232 and the second electrode sheet 233 , and the end surfaces of the first electrode sheet 232 and the second electrode sheet 233 A glue 500 is provided between the first flexible circuit board 300 to ensure a more stable connection. At the same time, the glue 500 can prevent the first end of the first flexible circuit board 300 from being bent at a large angle, thereby protecting the first flexible circuit board 300. Function of the flexible circuit board 300 . Among them, the colloid 500 can use vertical glue as the adhesive.

Furthermore, the NFC coil 110, the first electrode sheet 232 and the second electrode sheet 233 are arranged on the same layer. For example, they are all disposed on the surface of the diffusion layer 230 and located in the first insulating layer 240 to improve space utilization and further avoid occupation of the stacking space of the backlight module 200 .

In some embodiments, as shown in FIG. 3 , the surface of the NFC ferrite 120 facing the reflective layer 210 is a first end surface, and a protruding ring 121 is provided on the first end surface. The projection of the NFC coil 110 on the first end surface is located in the projection of the protruding ring 121 on the first end surface. The surface of the NFC ferrite 120 surrounded by the protruding ring 121 can be used as a receiving surface for sending signals to the NFC coil 110, and adding the protruding ring 121 on the surface of the NFC ferrite 120 can further focus the magnetic flux and improve the strength and stability.

In the display device disclosed in the embodiment of the present application, the backlight module 200 may further include a support frame, which is usually an iron frame, and the support frame can support other structures of the backlight module 200 . In a further technical solution, the support frame is an NFC ferrite 120. In this case, the support frame and the NFC ferrite 120 are reused, so that the support frame of the backlight module 200 can play a dual-purpose effect. Avoiding the problem of increased thickness caused by more stacked structures of the backlight module 200 further facilitates the design of the display device toward a thinner direction.

It should also be pointed out here that the specific process means to realize the sequential stacking of the reflective layer 210, the light source component layer 220, the diffusion layer 230, the first insulating layer 240, the first protective layer 250, and the light enhancement layer 260 can be achieved by vapor deposition. accomplish.

The electronic devices disclosed in the embodiments of the present application may be mobile phones, tablet computers, e-book readers, wearable devices (such as smart watches, smart glasses), etc. The embodiments of the present application do not limit the specific types of electronic devices.

The above descriptions are only examples of the present application, and are not intended to limit the present application. For those skilled in the art, various modifications and changes may occur in this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims (13)

1. The display device is characterized by comprising an NFC module (100) and a backlight module (200), wherein:

the NFC module (100) comprises an NFC coil (110) and an NFC ferrite (120);

the backlight module (200) comprises a diffusion layer (230), a first insulating layer (240) and a first protective layer (250) which are sequentially stacked,

the NFC coil (110) is arranged on the diffusion layer (230) and is positioned in the first insulating layer (240), and the NFC ferrite (120) is arranged on one side of the diffusion layer (230) opposite to the NFC coil (110);

the NFC coil (110) extends around the edge of the backlight module (200) and is arranged in a plurality of circles, the diffusion layer (230) comprises an end outer edge (231), a first electrode plate (232) and a second electrode plate (233) are fixed on the surface of the end outer edge (231) facing the display direction of the backlight module (200), the first electrode plate (232) and the second electrode plate (233) are arranged at intervals, and the NFC coil (110), the first electrode plate (232) and the second electrode plate (233) are arranged in the same layer;

the NFC coil (110) comprises a first coil end (111) adjacent to the center of the backlight module (200) and a second coil end (112) adjacent to the edge of the backlight module (200), the first coil end (111) is electrically connected with the first electrode piece (232) through a bridging wire (400), the second coil end (112) is adjacent to the second electrode piece (233), and the second coil end (112) is electrically connected with the second electrode piece (233);

the first part of the bridging wire (400) is arranged in the first insulating layer (240), and the second part of the bridging wire (400) is arranged in the first protective layer (250).

2. The display device according to claim 1, wherein the backlight module (200) comprises a display area (200 a) and a non-display area (200 b), the non-display area (200 b) is disposed around the display area (200 a), a portion of the NFC coil (110) is located in the display area (200 a), and another portion of the NFC coil (110) is located in the non-display area (200 b).

3. The display device according to claim 1, further comprising a first flexible circuit board (300), wherein a first end of the first flexible circuit board (300) is connected to an edge of the backlight module (200) and is electrically connected to the second coil end (112), and wherein the first coil end (111) is electrically connected to the first flexible circuit board (300) through a bridging trace (400).

4. A display device according to claim 3, wherein the backlight module (200) further comprises a light source assembly layer (220), and the light source assembly layer (220) is stacked on a side of the diffusion layer (230) facing away from the first insulating layer (240) and is located between the NFC ferrite (120) and the diffusion layer (230).

5. The display device according to claim 4, wherein the light source module layer (220) includes a light guide layer (221) and a light source (222),

the light source (222) is arranged at one side of the light guide layer (221), the light source component layer (220) is overlapped on the diffusion layer (230) through the light guide layer (221),

light emitted by the light source (222) is emitted into the light guide layer (221), and a first part of light emitted back to the NFC ferrite (120) is emitted through the light guide layer (221).

6. The display device according to claim 5, wherein the light source module layer (220) further comprises a reflective cover (223),

the reflecting cover (223) is covered on the light source (222) and is arranged opposite to the light guide layer (221), one side of the reflecting cover (223) facing the light guide layer (221) is provided with a reflecting opening,

the light emitted from the light source (222) is reflected by the reflecting cover (223) and then enters the light guide layer (221) through the reflecting opening.

7. The display device of claim 5, wherein the backlight module (200) further comprises a reflective layer (210), the reflective layer (210) being stacked between the NFC ferrite (120) and the light source assembly layer (220),

light emitted by the light source (222) is incident on the light guide layer (221) and emits a second part of light towards the reflecting layer (210) through the light guide layer (221),

the second part of light rays are emitted towards the first part of light rays after being reflected by the reflecting layer (210).

8. The display device of claim 4, wherein the first insulating layer (240) forms a first projection on the diffusion layer (230), the end outer edge (231) forms a second projection on the diffusion layer (230), the first projection is coplanar with and on one side of the second projection,

a first end of the first flexible circuit board (300) is electrically connected with the first electrode pad (232) and the second electrode pad (233).

9. The display device according to claim 1, wherein the backlight module (200) further comprises a light enhancement layer (260), the light enhancement layer (260) being stacked on a side of the first protective layer (250) facing away from the first insulating layer (240).

10. A display device according to claim 3, wherein the first end of the first flexible circuit board (300) is lap-fixed on the first electrode sheet (232) and the second electrode sheet (233), and a colloid (500) is provided between the end surfaces of the first electrode sheet (232) and the second electrode sheet (233) and the first flexible circuit board (300).

11. The display device according to claim 1, wherein the backlight module (200) further comprises a support frame, the support frame being the NFC ferrite (120).

12. The display device according to claim 1, wherein the NFC coil (110) is a transparent trace.

13. An electronic device comprising the display device according to any one of claims 1 to 12.

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