CN112039560B - Dress display module assembly and dress display device - Google Patents
Dress display module assembly and dress display device Download PDFInfo
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- CN112039560B CN112039560B CN202010887370.7A CN202010887370A CN112039560B CN 112039560 B CN112039560 B CN 112039560B CN 202010887370 A CN202010887370 A CN 202010887370A CN 112039560 B CN112039560 B CN 112039560B
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- H—ELECTRICITY
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- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The embodiment of the invention discloses a wearable display module and a wearable display device. The wearable display module comprises a display panel, a functional coil structure and a main flexible circuit board, wherein the functional coil structure is positioned on one side of the display panel, which is far away from the light-emitting side, and the main flexible circuit board is positioned on one side of the functional coil structure, which is far away from the display panel; the functional coil structure comprises a foam layer, a near field communication coil, an ambient light sensor coil and a coil bonding pad; the main flexible circuit board is electrically connected with the ambient light sensor coil and the near field communication coil through the coil bonding pad respectively; the vertical projection of the near field communication coil on the plane of the foam layer extends along the inner side of the edge of the foam layer; the vertical projection of the ambient light sensor coil on the plane of the foam layer and the vertical projection of the near field communication coil on the plane of the foam layer are not overlapped. The implementation of the invention can prevent signal interference between the near field communication signal and the ambient light sensing signal, and ensure the normal work of the near field communication and ambient light sensing functions.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a wearable display module and a wearable display device.
Background
The current OLED wearing type display product has small size and space, so that the layout of internal components of the product in a limited space needs to meet the requirements of small overall space and signal interference avoidance as far as possible.
Generally, a near field communication function and an ambient light sensing function are provided in an existing wearable display product, wherein the near field communication function is to form a signal by electromagnetic induction of a coil so as to perform communication; the ambient light sensing function is to utilize the sensor to sense the external light of the display product in real time so as to adapt and adjust the display mode and ensure the display effect. However, because the product size is less, when this dress shows that inside near field communication coil and the ambient light sensor coil of setting of product, can be because the product inner space is limited, restricted two coil's the mode of arranging, and lead to two coil mutual overlapping and produce signal interference easily, can influence near field communication function and ambient light sensing function to a certain extent.
Disclosure of Invention
The invention provides a wearable display module and a wearable display device, which are used for avoiding the overlapping of a near field communication coil and an ambient light sensor coil, preventing the near field communication coil and the ambient light sensor coil from generating signal interference and ensuring the normal work of the near field communication and ambient light sensing functions.
In a first aspect, an embodiment of the present invention provides a wearable display module, including a display panel, a functional coil structure and a main flexible printed circuit, where the functional coil structure is located on a side of the display panel away from a light exit, and the main flexible printed circuit is located on a side of the functional coil structure away from the display panel;
the functional coil structure comprises a foam layer, a near field communication coil, an ambient light sensor coil and a coil bonding pad; the main flexible circuit board is electrically connected with the ambient light sensor coil and the near field communication coil through the coil bonding pad respectively;
the near field communication coil extends along the inner side of the edge of the foam layer in the vertical projection of the foam layer on the plane where the foam layer is located; and the vertical projection of the ambient light sensor coil on the plane of the foam layer and the vertical projection of the near field communication coil on the plane of the foam layer are not overlapped.
Optionally, the functional coil structure further includes a coil substrate layer, and the coil substrate layer is located on a side of the foam layer away from the display panel;
the foam layer and the coil base material layer both comprise pad areas, and the coil pads are positioned in the pad areas and penetrate through the foam layer and the coil base material layer;
the environment light sensor coil is arranged in the coil substrate layer; the vertical projections of the ambient light sensor coil and the near field communication coil on a first plane are not overlapped, wherein the first plane is vertical to the plane where the display panel is located.
Optionally, the near field communication coil is disposed in the coil substrate layer.
Optionally, the near field communication coil is disposed in the foam layer.
Optionally, the functional coil structure further comprises an electromagnetic shielding layer, and the electromagnetic shielding layer is disposed between the near field communication coil and the ambient light sensor coil.
Optionally, the ambient light sensor coil is disposed in the foam layer, and the ambient light sensor coil and the near field communication coil are disposed on the same layer.
Optionally, the functional coil structure includes a main board component avoiding region and a non-avoiding region, and in a direction perpendicular to the functional coil structure, the thickness of the main board component avoiding region is smaller than that of the non-avoiding region;
the near field communication coil and the ambient light sensor coil both extend in the non-avoidance zone.
Optionally, the ambient light sensor coil comprises a pad connection terminal and a sensor connection terminal;
on the vertical projection of the plane where the foam layer is located, the minimum distance between the part of the ambient light sensor coil except the pad connecting end and the sensor connecting end and the near field communication coil is greater than or equal to the minimum distance between the pad connecting end or the sensor connecting end and the near field communication coil.
Optionally, the functional coil structure further includes an ambient light sensor, and the ambient light sensor is welded to the sensor connection end;
the bubble cotton layer includes the ambient light sensor opening area, the ambient light sensor is in the vertical projection on bubble cotton layer is located in the ambient light sensor opening area.
Optionally, the functional coil structure further includes a coil substrate layer, and the coil substrate layer is located on a side of the foam layer away from the display panel;
the foam layer and the coil base material layer both comprise pad areas, and the coil pads are positioned in the pad areas and penetrate through the foam layer and the coil base material layer; the environment light sensor coil is arranged in the coil base material layer;
the sensor connecting end is provided with a rubber ring, the rubber ring is arranged on the vertical projection of the foam layer to surround the edge of the opening area of the ambient light sensor and extend, and the rubber ring is used for bonding and fixing the ambient light sensor coil on the foam layer.
Optionally, the foam layer is consistent with the display panel in shape, and the display panel and the foam layer have shapes including a circle, a rectangle, a diamond, an ellipse, and a regular polygon.
In a second aspect, an embodiment of the present invention further provides a wearable display device, including the wearable display module according to any one of the first aspects.
According to the wearable display module and the wearable display device, the display panel, the functional coil structure and the main flexible circuit board are arranged in the display module, the functional coil structure is located on one side, away from the light-emitting side, of the display panel, and the main flexible circuit board is located on one side, away from the display panel, of the functional coil structure; the functional coil structure comprises a foam layer, a near field communication coil, an ambient light sensor coil and a coil bonding pad; the main flexible circuit board is electrically connected with the ambient light sensor coil and the near field communication coil through the coil bonding pad respectively; and the vertical projection of the near field communication coil on the plane of the foam layer is arranged and extends along the inner side of the edge of the foam layer; the vertical projection of the environment light sensor coil on the plane where the foam layer is located and the vertical projection of the near field communication coil on the plane where the foam layer is located are not overlapped, so that mutual interference between the near field communication coil and the environment light sensor coil can be avoided, the signal intensity of a near field communication signal and an environment light sensing signal is ensured, and the near field communication and environment light sensing functions can work normally.
Drawings
Fig. 1 is a schematic structural view of a related wearing display product;
FIG. 2 is a schematic diagram of a functional coil structure of the wearable display product of FIG. 1;
fig. 3 is a schematic structural diagram of a wearable display module according to an embodiment of the present invention;
FIG. 4 is a side view of the wearable display module of FIG. 3;
fig. 5 is a schematic structural view of another wearable display module according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view along AA' of the functional coil structure of the wearable display module of FIG. 5;
FIG. 7 is a cross-sectional view of another functional coil structure of a wearable display module according to an embodiment of the present invention;
FIG. 8 is a cross-sectional view of another functional coil structure of a wearable display module according to an embodiment of the present invention;
FIG. 9 is a cross-sectional view of another functional coil structure of a wearable display module according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a wearable module according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a wearable display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings, not all of them.
As discussed in the background section, the relatively small size of the prior related wearable display products results in limited internal assembly space. Fig. 1 is a schematic structural diagram of a related wearing display product, fig. 2 is a schematic structural diagram of a functional coil of the wearing display product shown in fig. 1, and referring to fig. 1 and fig. 2, in the related wearing display product, a main board 40 is disposed on a back surface of a display panel 10, a functional coil structure 20 is added between the display panel 10 and the main board 40, and the functional coil structure 20 is adhered to the back surface of the display panel 10 through a foam layer 210. The functional coil structure 20 includes a near field communication coil 21 and an Ambient Light Sensor coil 22 connected to an Ambient Light Sensor (ALS) 24. The near field communication coil 21 and the ambient light sensor coil 22 are electrically connected to a main Flexible Circuit board (FPC) 30 through a coil pad 23.
However, in the conventional design, the near field communication coil 21 and the ambient light sensor coil 22 are disposed in the coil base material layer 220, and are sealed and insulated by the coil base material layer 220. Also, the near field communication coil 21 and the ambient light sensor coil 22 need to be reasonably bent and overlapped for space occupation reasons. However, at this time, the near field communication coil and the ambient light sensor coil are both disposed in the coil substrate layer 220 and overlap with each other, so that the near field communication signal and the ambient light sensing signal interfere with each other, which affects the near field communication and the ambient light sensing.
Based on the technical problem, the embodiment of the invention provides a wearable display module. Fig. 3 is a schematic structural diagram of a wearable display module according to an embodiment of the present invention, fig. 4 is a side view of the wearable display module shown in fig. 3, referring to fig. 3 and fig. 4, the wearable display module includes a display panel 10, a functional coil structure 20 and a main flexible printed circuit 30, the functional coil structure 20 is located on a side of the display panel 10 away from a light exit, and the main flexible printed circuit 30 is located on a side of the functional coil structure 20 away from the display panel 10; the functional coil structure 20 comprises a foam layer 210, a near field communication coil 21, an ambient light sensor coil 22 and a coil pad 23; the main flexible wiring board 30 is electrically connected to the ambient light sensor coil 22 and the near field communication coil 21, respectively, through the coil pads 23 (not shown in the figure); the vertical projection of the near field communication coil 21 on the plane of the foam layer 210 extends along the inner side of the edge of the foam layer 210; the vertical projection of the ambient light sensor coil 22 on the plane of the foam layer 210 and the vertical projection of the near field communication coil 21 on the plane of the foam layer 210 are not overlapped.
Wherein, one end of the main flexible printed circuit 30 will be connected to the connector on the driving display motherboard, and the other end will be connected to the bonding pad of the display panel, and the main flexible printed circuit 30 is responsible for receiving the driving display signals of the motherboard and the like to drive the display panel to display. Meanwhile, the middle area of the main flexible circuit board 30 is welded to the coil pad 23 of the functional coil structure 20, the coil pad 23 enables the near field communication coil and the ambient light sensor to be electrically connected to the driving display motherboard through the near field communication coil 21 and the ambient light sensor coil 22, and the main flexible circuit board 30 is responsible for receiving and transmitting signals of the driving display motherboard, so that functions of near field communication and ambient light sensing are implemented. In this functional coil structure, the foam layer 210 is responsible for pasting with display panel's back, plays certain cushioning effect simultaneously, avoids mechanical shock.
In addition, the vertical projection of the near field communication coil 21 on the plane of the foam layer 210 extends along the inner side of the edge of the foam layer 210; and the vertical projection of the ambient light sensor coil 22 on the plane of the foam layer 210 and the vertical projection of the near field communication coil 21 on the plane of the foam layer 210 are not overlapped, which substantially improves the pattern of the near field communication coil 21. The near field communication coil 21 is arranged to extend along the inner side of the edge of the foam layer 210, and the pattern of the near field communication coil 21 is distributed according to the pattern of the foam layer 210, so that the near field communication coil 21 is ensured to extend at the periphery. And the ambient light sensor coil 22 is arranged in the middle area of the near field communication coil 21, i.e. the near field communication coil 21 is arranged around the ambient light sensor coil 22, so as to ensure that the ambient light sensor coil 22 is not overlapped, thereby reducing the mutual interference between the two signals.
According to the wearable display module, the display panel, the functional coil structure and the main flexible circuit board are arranged, the functional coil structure is located on one side, away from the light-emitting side, of the display panel, and the main flexible circuit board is located on one side, away from the display panel, of the functional coil structure; the functional coil structure comprises a foam layer, a near field communication coil, an ambient light sensor coil and a coil bonding pad; the main flexible circuit board is electrically connected with the ambient light sensor coil and the near field communication coil through the coil bonding pad respectively; the vertical projection of the near field communication coil on the plane where the foam layer is located is arranged and extends along the inner side of the edge of the foam layer; the vertical projection of the environment light sensor coil on the plane of the foam layer and the vertical projection of the near field communication coil on the plane of the foam layer are not overlapped, so that mutual interference between the near field communication coil and the environment light sensor coil can be avoided, the signal intensity of the near field communication signal and the signal intensity of the environment light sensing signal are ensured, and the near field communication function and the environment light sensing function can work normally.
According to the wearable display module, by designing the layout shape of the near field communication coil 21 in the functional coil structure, the planar projection of the near field communication coil is around the planar projection of the ambient light sensor coil 22, the two coils are far away from each other on a two-dimensional plane and do not intersect with each other, and therefore signal interference caused by overlapping of the coils is avoided. When designing the shape of the near field communication coil 21, it depends mainly on the shape of the foam layer 210. The bottom layer structure of the functional coil structure shown in fig. 4 is a foam layer 210, and a display panel is attached to the back surface of the foam layer 210, that is, the display panel and the functional coil structure are arranged back to back. Specifically, optionally, the foam layer 210 in the wearable display module may be configured to be in accordance with the shape of the display panel 10, as shown in fig. 4, both the shape of the foam layer 210 and the shape of the display panel 10 are circular. Of course, those skilled in the art may alternatively set the shapes of the display panel 10 and the foam layer 210 to be rectangular, rhombic, oval, regular polygonal, etc., without any limitation.
Furthermore, since the interference of the signals depends mainly on the mutual distance of the two coils, when the two coils are too close, there may still be some signal interference. Based on this, in the wearable display module provided by the embodiment of the invention, the specific shapes and layouts of the near field communication coil and the ambient light sensor coil can be designed, so that the distance between the near field communication coil and the ambient light sensor coil is reduced, and the interference of signals is avoided as much as possible.
Fig. 5 is a schematic structural diagram of another wearable display module according to an embodiment of the present invention, fig. 6 is a cross-sectional view along AA' of a functional coil structure in the wearable display module shown in fig. 5, and referring to fig. 5 and 6, the ambient light sensor coil 22 includes a pad connection terminal 221 and a sensor connection terminal 222; alternatively, the minimum distance D between the portion of the ambient light sensor coil 22 except the pad connection end 221 and the sensor connection end 222 and the near field communication coil 21, which is arranged on the vertical projection of the plane of the foam layer 210, is greater than or equal to the minimum distance D between the pad connection end 221 or the sensor connection end 222 and the near field communication coil 21.
Since the ambient light sensor coil 22 needs to be connected to the ambient light sensor 24 and the coil pad 23, when the ambient light sensor coil 22 is designed, the ambient light sensor coil 22 inevitably needs to keep a short distance from the near field communication coil 21, that is, two ends of the ambient light sensor coil 22 are close to the near field communication coil 21. In order to reduce the signal interference between the parts of the ambient light sensor coil 22 except the two ends and the near field communication coil 21, the shape of the ambient light sensor coil 22 can be designed reasonably by reasonably arranging the winding direction of the ambient light sensor coil 22, so that the distance between the two coils is ensured.
With continued reference to fig. 5 and 6, an ambient light sensor 24 is also provided in the functional coil structure, the ambient light sensor 24 being soldered to one end of the ambient light sensor coil 22, i.e., the sensor connection end 222; the foam layer 210 includes an ambient light sensor open area 100, and a perpendicular projection of the ambient light sensor 24 onto the foam layer 210 is located in the ambient light sensor open area 100.
The ambient light sensor 24 is responsible for receiving the external light incident through the display panel 10 and acquiring information such as light intensity of the external light, so as to sense the ambient light. The ambient light sensor 24 is disposed in the functional coil structure 20 and is located on one side of the foam layer 210 departing from the display panel 10, at this time, in order to ensure the incident of the external light, an opening needs to be disposed on the foam layer 210, i.e., the ambient light sensor opening area 100 is disposed, and the ambient light sensor 24 implements light sensing according to the incident light of the opening area and is used for assisting the display of the wearable product. Illustratively, when the ambient light is strong, the wearable product can be adjusted to display in a display mode with higher contrast or brightness by sensing and sending the ambient light intensity information through the ambient light sensor 24, so as to ensure the display effect.
Besides the above structure, the functional coil structure needs to be reasonably adhered and fixed. The detailed structure of the functional coil is described below, and further, referring to fig. 5 and fig. 6, the functional coil structure further includes a coil substrate layer 220, where the coil substrate layer 220 is located on a side of the foam layer 210 facing away from the display panel; the foam layer 210 and the coil substrate layer 220 both comprise a pad area 200, and the coil pad 23 is positioned in the pad area 200 and penetrates through the foam layer 210 and the coil substrate layer 220; the ambient light sensor coil 22 is disposed in the coil substrate layer 220; the sensor connection end 222 is provided with a rubber ring 25, the rubber ring 25 extends around the edge of the ambient light sensor opening area 100 in the vertical projection of the foam layer 210, and the rubber ring 25 fixes the ambient light sensor coil 22 on the foam layer 210 in an adhering manner.
Considering that mutual interference of the coils depends not only on the distance in the two-dimensional plane, but also needs to be designed reasonably in the longitudinal direction to avoid signal interference caused by too close distance of the two coils. On the basis of the above wearable display module, with reference to fig. 5 and fig. 6, optionally, the functional coil structure 20 may further include a coil substrate layer 220, and the coil substrate layer 220 is located on a side of the foam layer 210 away from the display panel 10; the foam layer 210 and the coil substrate layer 220 both comprise a pad area 200, and the coil pad 23 is positioned in the pad area 200 and penetrates through the foam layer 210 and the coil substrate layer 220; the ambient light sensor coil 22 is disposed in the coil substrate layer 220; the vertical projections of the ambient light sensor coil 22 and the near field communication coil 21 on a first plane perpendicular to the plane of the display panel 10 do not overlap each other.
The coil substrate layer 220 is substantially made of organic materials such as resin, and in the manufacturing process, the ambient light sensor coil 22 needs to be disposed in the resin material, and is sealed and insulated by the resin material. Of course, since the ambient light sensor coil 22 needs to connect the coil pads 23 in the pad region 200, both ends of the ambient light sensor coil 22 are exposed or protruded from the coil base material layer 220. The first plane is substantially a virtual plane perpendicular to the plane of the display panel 10, and is parallel to the light emitting direction, which can be understood as a side surface of the wearable display module. The vertical projection of the ambient light sensor coil 22 and the near field communication coil 21 on the first plane, respectively, can be understood as projecting the ambient light sensor coil 22 and the near field communication coil 21 on the side, both projections being linear. The perpendicular projections do not overlap, essentially illustrating that the ambient light sensor coil 22 and the near field communication coil 21 are located at different layers in the longitudinal direction. In this case, since the patterns of the ambient light sensor coil 22 and the near field communication coil 21 do not affect each other, the patterns of the two can be freely designed so that no overlapping of the patterns occurs. Moreover, because the ambient light sensor coil 22 and the near field communication coil 21 are located on different layers, there is no overlap in the plane, and there is a certain distance in the vertical direction, so that interference between signals can be further avoided, and normal transmission of the signals is ensured.
The embodiment of the invention provides a plurality of specific implementation modes for the setting position of the near field communication coil. With continued reference to fig. 5 and fig. 6, in the wearable display module, the functional coil structure 20 further includes a coil substrate layer 220, and the coil substrate layer 220 is located on a side of the foam layer 210 away from the display panel 10; the foam layer 210 and the coil base material layer 220 each include a pad region 200, and the coil pad 23 is located in the pad region 200 and penetrates through the foam layer 210 and the coil base material layer 220. And, optionally, the near field communication coil 21 is disposed in the foam layer 210; the ambient light sensor coil 22 is disposed in the coil substrate layer 220.
At this time, the near field communication coil 21 is disposed in the foam layer 210, the ambient light sensor coil 22 is disposed in the coil base material layer 220, the foam layer 210 is located between the display panel 10 and the coil base material layer 220, the pattern of the near field communication coil 21 can be designed according to the shape of the foam layer 210, and the pattern of the ambient light sensor coil 22 does not need to be designed in consideration of the pattern shape of the near field communication coil 21, so that the pattern shapes of the near field communication coil 21 and the ambient light sensor coil 22 can be freely designed. Moreover, near field communication coil 21 is because set up in bubble cotton layer 210, and it can guarantee naturally with ambient light sensor coil 22 and other electronic components's insulation, can utilize the thickness of bubble cotton layer 210 itself simultaneously, can suitably reduce the thickness of coil substrate layer 220 to a certain extent for whole functional coil structure 20's whole volume reduces. In addition, near field communication coil 21 sets up in bubble cotton layer 210, can prevent that coil and flexible line way board from bumping and the problem of contact, can cushion the collision stress between the two to avoid near field communication coil 21 to receive external force damage, cause the influence to the near field communication function.
Fig. 7 is a cross-sectional view of another functional coil structure of a wearable display module according to an embodiment of the present invention, and referring to fig. 7, further, when the coil substrate layer 220 and the ambient light sensor coil 22 are prepared, the near field communication coil 21 may be prepared at the same time. In other words, the near field communication coil 21 may be disposed in the coil base material layer 220. It should be noted that, when the near field communication coil 21 is disposed in the coil substrate layer 220, the near field communication coil 21 and the ambient light sensor coil 22 need to be prepared in a layered manner, that is, in the coil substrate layer 220, in a direction perpendicular to a plane of the coil substrate layer 220, the near field communication coil 21 and the ambient light sensor coil 22 are located at different positions, respectively. Furthermore, it is understood that there should be a base material for isolation between the near field communication coil 21 and the ambient light sensor coil 22 in order to ensure mutual insulation between the two. In the existing design, the near field communication coil 21 and the ambient light sensor coil 22 are disposed on the same layer, and an insulating overlapping between the two needs to be realized by adopting a bridge-spanning process. Compared with the existing design, the wearable display module provided by the embodiment of the invention can reduce the process difficulty caused by a bridge-crossing process, can ensure that the near field communication coil 21 and the ambient light sensor coil 22 are not overlapped on a two-dimensional plane, and can keep a certain distance in the longitudinal direction to ensure that signals are not interfered with each other.
In order to further improve the signal interference prevention capability between the near field communication coil and the ambient light sensor coil, on the basis of the above embodiment, the functional coil structure may further include an electromagnetic shielding layer. Fig. 8 is a cross-sectional view of a functional coil structure of another wearable display module according to an embodiment of the present invention, and referring to fig. 8, in the wearable display module, an electromagnetic shielding layer 230 is further disposed in the functional coil structure 20, and the electromagnetic shielding layer 230 is disposed between the near field communication coil 21 and the ambient light sensor coil 22. At this time, the electromagnetic shielding layer 230 can electromagnetically shield and isolate signals in the near field communication coil 21 and the ambient light sensor coil 22, thereby preventing an electric field, a magnetic field, an electromagnetic wave, or the like caused by the signals from affecting the counterpart signals and shielding the counterpart signals from interfering with each other.
Materials required for preparing the electromagnetic shielding layer 230 can be classified into three major categories, including metals, fillers, surface coatings and conductive coatings, wherein the metals can include beryllium copper, stainless steel and the like; the filling type is that a certain proportion of conductive filler is added into a non-conductive base material, the base material can adopt silica gel, plastics and other materials, and the conductive filler can be metal sheets, metal powder, metal fibers or metallized fibers and other materials; surface coatings and conductive coatings are applied by electroplating to a substrate, and commonly used methods include electroless gold plating, vacuum sputtering, metal spraying, and metal foil application. The electromagnetic shielding layer 230 may be made of, for example and without limitation, conductive rubber, conductive foam, conductive cloth, metal EMI liner, conductive adhesive and paint, STM patch foam, and wave-absorbing material. In addition, in consideration of the signal shielding effect of the electromagnetic shielding layer 230, the shape of the electromagnetic shielding layer 230 may be set to coincide with the shape of the whole foam layer 210, and at this time, the electromagnetic shielding layer 230 may completely cover the near field communication coil 21 and the ambient light sensor coil 22, that is, may completely isolate the two coils, so as to avoid mutual interference between signals of the two coils.
Besides the arrangement mode of the near field communication coil and the ambient light sensor coil, the embodiment of the invention also provides a wearable display module. Fig. 9 is a cross-sectional view of a functional coil structure of a wearable display module according to another embodiment of the present invention, referring to fig. 9, in which a vertical projection of the nfc coil 21 on a plane where the foam layer 210 is located extends along an inner side of an edge of the foam layer 210; the vertical projection of the ambient light sensor coil 22 on the plane of the foam layer 210 and the vertical projection of the near field communication coil 21 on the plane of the foam layer 210 are not overlapped. And, optionally, the near field communication coil 21 and the ambient light sensor coil 22 are both disposed in the foam layer 210, and the ambient light sensor coil 22 and the near field communication coil 21 are disposed on the same layer.
In the prior art, the foam layer 210 mainly functions to bond and cushion the display panel and the functional coil structure. In the embodiment of the present invention, the near field communication coil 21 and the ambient light sensor coil 22 are disposed in the same layer in the foam layer 210, so that the patterns of the near field communication coil 21 and the ambient light sensor coil 22 can be designed at will without considering the influence of the coils on other electronic components in terms of space occupation. Thus, the near field communication coil 21 may be arranged to extend around an inner area of the edge of the foam layer 210, and for the ambient light sensor coil 22 it may be arranged to be located in the pattern of the near field communication coil 21, i.e. the near field communication coil 21 surrounds the ambient light sensor coil 22. In addition, the foam layer 210 can also replace a coil substrate layer to play a role in insulation protection, so that the coil substrate layer is saved, and the volume of the whole functional coil structure is reduced.
It should be noted that, because the functional coil structure is located between the display panel and the driving display main board, a plurality of different electronic components need to be arranged on the driving display main board. In order to ensure the miniaturization of the whole wearable display device and reduce the size of the wearable display module, the wearable display module provided by the embodiment of the invention can be provided with a main board component avoiding area and a non-avoiding area in the functional coil structure. Fig. 10 is a schematic structural diagram of a wearable module according to an embodiment of the present invention, and referring to fig. 10, a functional coil structure 20 includes a main board component avoiding region 300 and a non-avoiding region 400, and in a direction perpendicular to the functional coil structure 20, a thickness of the main board component avoiding region 300 is smaller than a thickness of the non-avoiding region 400; both the near field communication coil 21 and the ambient light sensor coil 22 extend in the non-avoidance zone 400.
Wherein, this dress display module assembly can assemble with the drive display mainboard, because components and parts own possess certain height, the drive shows that mainboard surface is concave-convex irregular structure, in order to minimize the space, rationally arrange the spatial layout of components and parts and function coil structure, can also set up the relative surface of function coil structure 20 into concave-convex irregular structure, and both are complementary mutually, be about to the components and parts that drive on the display mainboard and dodge the position of district 300 corresponding to mainboard components and parts, the partial structure of components and parts can stretch into function coil structure this moment, holistic thickness can be thinner in the space, the volume is littleer. Specifically, the shape of the main board component avoiding area 300 needs to be set according to the component layout on the surface of the driving display main board, and after the main board component avoiding area 300 is determined, the shapes of the near field communication coil 21 and the ambient light sensor coil 22 are reasonably designed, so that the two coils can be arranged in the non-avoiding area 400. At this time, although the near field communication coil 21 and the ambient light sensor coil 22 have a certain thickness, the near field communication coil and the components on the driving display main board can be staggered with each other, so that the overall size requirement is ensured.
Fig. 11 is a schematic structural diagram of a wearable display device according to an embodiment of the present invention, and referring to fig. 11, the wearable display device includes any one of the wearable display modules 1 according to the embodiment of the present invention. The wearable display module 1 can be a watch, a bracelet and the like.
It is to be noted that the foregoing description is only exemplary of the invention and that the principles of the technology may be employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (12)
1. A wearable display module is characterized by comprising a display panel, a functional coil structure and a main flexible circuit board, wherein the functional coil structure is positioned on one side of the display panel, which is far away from the light emitting side, and the main flexible circuit board is positioned on one side of the functional coil structure, which is far away from the display panel;
the functional coil structure comprises a foam layer, a near field communication coil, an ambient light sensor coil and a coil bonding pad; the main flexible circuit board is electrically connected with the ambient light sensor coil and the near field communication coil through the coil bonding pad respectively;
the near field communication coil extends along the inner side of the edge of the foam layer in the vertical projection of the foam layer on the plane where the foam layer is located; the vertical projection of the ambient light sensor coil on the plane of the foam layer is not overlapped with the vertical projection of the near field communication coil on the plane of the foam layer;
the functional coil structure further comprises a coil base material layer, and the coil base material layer is positioned on one side, away from the display panel, of the foam layer;
and in the direction vertical to the plane of the coil substrate layer, the near field communication coil and the ambient light sensor coil are respectively positioned at different positions.
2. The wearable display module of claim 1,
the foam layer and the coil base material layer both comprise pad areas, and the coil pads are positioned in the pad areas and penetrate through the foam layer and the coil base material layer;
the environment light sensor coil is arranged in the coil substrate layer; the vertical projections of the ambient light sensor coil and the near field communication coil on a first plane are not overlapped, wherein the first plane is vertical to the plane of the display panel.
3. The wearable display module of claim 2, wherein the near field communication coil is disposed in the coil substrate layer.
4. The wearable display module of claim 2, wherein the near field communication coil is disposed in the foam layer.
5. The wearable display module of claim 2, wherein the functional coil structure further comprises an electromagnetic shielding layer disposed between the near field communication coil and the ambient light sensor coil.
6. The wearable display module of claim 1, wherein the ambient light sensor coil is disposed in the foam layer, and the ambient light sensor coil and the near field communication coil are disposed on the same layer.
7. The wearable display module of claim 1, wherein the functional coil structure comprises a main board component avoiding region and a non-avoiding region, and the thickness of the main board component avoiding region is smaller than that of the non-avoiding region in a direction perpendicular to the functional coil structure;
the near field communication coil and the ambient light sensor coil both extend in the non-avoidance zone.
8. The wearable display module of claim 1, wherein the ambient light sensor coil comprises a pad connection end and a sensor connection end;
on the vertical projection of the plane where the foam layer is located, the minimum distance between the part of the ambient light sensor coil except the pad connecting end and the sensor connecting end and the near field communication coil is greater than or equal to the minimum distance between the pad connecting end or the sensor connecting end and the near field communication coil.
9. The wearable display module of claim 8, wherein the functional coil structure further comprises an ambient light sensor, the ambient light sensor being soldered to the sensor connection end;
the bubble cotton layer includes the ambient light sensor opening area, the ambient light sensor is in the vertical projection on bubble cotton layer is located in the ambient light sensor opening area.
10. The wearable display module of claim 9, wherein the functional coil structure further comprises a coil substrate layer, the coil substrate layer being located on a side of the foam layer facing away from the display panel;
the foam layer and the coil base material layer both comprise pad areas, and the coil pads are positioned in the pad areas and penetrate through the foam layer and the coil base material layer; the environment light sensor coil is arranged in the coil base material layer;
the sensor link is provided with the rubber ring, the rubber ring is in the vertical projection on bubble cotton layer centers on the edge of ambient light sensor opening area extends, the rubber ring will ambient light sensor coil bonds to be fixed on the bubble cotton layer.
11. The wearable display module of claim 1, wherein the foam layer is in accordance with the display panel, and the display panel and the foam layer have any shape selected from the group consisting of a circle, a rectangle, a diamond, an ellipse, and a regular polygon.
12. A wearable display device comprising the wearable display module of any of claims 1-11.
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| CN202010887370.7A CN112039560B (en) | 2020-08-28 | 2020-08-28 | Dress display module assembly and dress display device |
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Effective date of registration: 20211103 Address after: No.8, liufangyuan Henglu, Donghu New Technology Development Zone, Wuhan City, Hubei Province Applicant after: WUHAN TIANMA MICRO-ELECTRONICS Co.,Ltd. Applicant after: Wuhan Tianma Microelectronics Co.,Ltd. Shanghai Branch Address before: Room 509, building 1, No. 6111, Longdong Avenue, Pudong New Area, Shanghai, 200120 Applicant before: SHANGHAI TIANMA AM-OLED Co.,Ltd. |
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