Cover plate, display module and display device

Abstract

The invention discloses a cover plate, a display module and a display device.The cover plate comprises a light-transmitting area and a peripheral area surrounding the light-transmitting area, and the cover plate comprises a cover plate body located in the light-transmitting area and the peripheral area; the antenna is located on one side of the cover plate body and located in the peripheral area. According to the cover plate, the display effect and the touch performance of the display panel can be improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a cover plate, a display module and a display device. Background Art

[0002] With the development of technology, the functionality of display devices is constantly being upgraded. As a component for receiving and transmitting signals in display devices, the technology of antennas is also constantly being upgraded.

[0003] Among them, designing the antenna on the display screen can reduce or avoid hand obstruction. An existing solution is to integrate the antenna with the touch layer. Although it can improve the overall integration, the antenna will occupy part of the touch layer, which will make the touch performance worse. At the same time, the antenna integrated on the display screen will block part of the light, causing optical display problems such as moiré, diffraction, and graininess. Summary of the invention

[0004] The present application provides a cover plate, a display module and a display device, which can improve the display effect and touch performance of a display panel.

[0005] The present application provides a cover plate, which includes a light-transmitting area and a peripheral area surrounding the light-transmitting area. The cover plate includes: a cover plate body, located in the light-transmitting area and the peripheral area; an antenna, located on one side of the cover plate body and in the peripheral area.

[0006] In one embodiment, the cover plate further includes: a light shielding layer located at one side of the cover plate body and in the peripheral area.

[0007] Preferably, the antenna is located on a side of the light shielding layer away from the cover plate body.

[0008] In one embodiment, the color of the antenna is different from the color of the light shielding layer.

[0009] Preferably, the color of the light-shielding layer is black.

[0010] Preferably, the material of the light-shielding layer includes ink or carbon black.

[0011] In one embodiment, the antenna includes a radiator and a feeder, the radiator and the feeder are both disposed on the cover body, and one end of the feeder is electrically connected to the radiator.

[0012] Preferably, the feed line is located on a side of the radiator away from the light-transmitting area.

[0013] In one embodiment, the shape of the radiator includes at least one of a rhombus, a rectangle, a square or a circle.

[0014] Preferably, the material of the radiator includes at least one of nano silver material and graphene material.

[0015] In one implementation, the number of the feeder lines is two, and the extension directions of the two feeder lines are at least partially non-parallel.

[0016] Preferably, the shape of the feed line includes an arc.

[0017] Preferably, the two feeder lines are arranged in mirror image.

[0018] In one embodiment, the cover plate further comprises: a bonding portion, which is disposed on the cover plate body and is electrically connected to the other end of the feeder;

[0019] Preferably, the cover plate further comprises: a flexible circuit board bonded to the bonding portion.

[0020] Preferably, the cover plate further includes a radio frequency chip, and the radio frequency chip is integrated on the flexible circuit board.

[0021] In one embodiment, the cover plate further includes: a protective layer, covering at least the flexible circuit board and the bonding area of ​​the bonding portion.

[0022] The second aspect of the present application also provides a display module, which includes a display area and a non-display area surrounding the display area, including a cover plate as described in any of the above embodiments, wherein the display area is arranged corresponding to the light-transmitting area, and the non-display area is arranged corresponding to the peripheral area.

[0023] Preferably, the antenna is located between the cover plate body and the light-emitting layer of the display module.

[0024] A third aspect of the present application further provides a display device, comprising a display module as described in any of the above embodiments.

[0025] Different from the prior art, the beneficial effect of the present application is: the antenna of the present application is located on one side of the cover body and in the peripheral area, so that after the cover is attached to the display panel, the antenna will not block the light in the display area of ​​the display panel, and thus will not affect the display effect. Compared with the prior art, the display effect of the display panel can be improved. At the same time, the antenna no longer occupies the space of the touch layer, thereby ensuring the area of ​​the touch layer and improving the touch performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0027] Figure 1 is a schematic top view of a first embodiment of the cover plate of the present application;

[0028] Figure 2 yes Figure 1 Schematic diagram of the membrane structure of the middle cover plate;

[0029] Figure 3 is a schematic top view of a second embodiment of the cover plate of the present application;

[0030] Figure 4 yes Figure 3 Schematic diagram of the membrane structure of the middle cover plate;

[0031] Figure 5 yes Figure 1 A schematic structural diagram of an embodiment of the antenna;

[0032] Figure 6 is a schematic top view of a second embodiment of the cover plate of the present application;

[0033] Figure 7 yes Figure 6 Schematic diagram of the membrane structure of the middle cover plate;

[0034] Figure 8 is a schematic diagram of the film structure of an embodiment of the display module of the present application;

[0035] Fig. 9 It is a schematic structural diagram of an embodiment of the display device of the present application. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] See also Figure 1 and Figure 2In a first aspect, the present application provides a cover plate 10, which includes a light-transmitting area TA and a peripheral area PA surrounding the light-transmitting area TA. The cover plate 10 includes a cover plate body 110 and an antenna 120. The cover plate body 110 is located in the light-transmitting area TA and the peripheral area PA; the antenna 120 is located on one side of the cover plate body 110 and in the peripheral area PA.

[0038] Specifically, the cover plate 10 is applied to the display panel, wherein the light-transmitting area TA may correspond to the display area of ​​the display panel, and can ensure that the light of the light-emitting unit in the display panel is transmitted from the light-transmitting area TA. The antenna 120 is located in the peripheral area PA and is arranged on one side of the cover plate body 110. The cover plate 10 is applied to the display panel, and the peripheral area PA does not block the display area of ​​the display panel. Therefore, it will not cause the display effect of the display panel to decline. Compared with the prior art, it can improve various display problems in the prior art. At the same time, the antenna 120 no longer needs to occupy the position of the touch layer as in the prior art, which releases the wiring space of the touch layer, thereby improving the touch performance.

[0039] In one embodiment, see Figure 2 The antenna 120 is located in the peripheral area PA and is protruded from the surface of one side of the cover body 110. When the cover 10 is subsequently attached to the display panel by optical glue, the optical glue has a flattening effect, which can eliminate the unevenness of the antenna 120.

[0040] In another embodiment, a groove is provided on the surface of one side of the cover body 110 in the peripheral area PA, and the antenna 120 is located in the groove, so that the cover 10 can be made flatter.

[0041] Optionally, the antenna 120 may be located at multiple sides of the peripheral area PA, or may be located at a single side of the peripheral area PA.

[0042] Preferably, the antenna 120 is located on a side of the peripheral area PA where the width is the widest.

[0043] In one embodiment, see Figure 3 and Figure 4 The cover plate 10 further includes a light shielding layer 130 , which is located at one side of the cover plate body 110 and in the peripheral area PA.

[0044] Specifically, the light shielding layer 130 is disposed in the peripheral area PA of the cover plate 10. The light shielding layer 130 is used to shield light, and can further shield light leaking from the edge of the light-transmitting area TA, thereby preventing light from leaking from areas outside the light-transmitting area PA of the cover plate 10. The material of the light shielding layer 130 can be a light-absorbing material or a reflective material, and of course, can also be other materials as long as they can play a role in blocking light.

[0045] In one embodiment, see Figure 4The antenna 120 is located on a side of the light shielding layer 130 away from the cover body 110 .

[0046] Specifically, when the cover plate 10 is attached to the display panel, the light shielding layer 130 and the antenna 120 are both disposed between the cover plate body 110 and the display panel, so that the side of the cover plate body 110 away from the light shielding layer 130 is exposed, making the exposed surface smoother. The antenna 120 is disposed on the side of the light shielding layer 130 away from the cover plate body 110. When viewing the peripheral area PA, only the light shielding layer 130 can be seen, and the antenna 120 cannot be directly seen. The antenna 120 is hidden under the light shielding layer 130, thereby ensuring a visual experience.

[0047] Of course, in some other implementations, the antenna 120 may also be disposed between the cover body 110 and the light shielding layer 130 .

[0048] In one embodiment, the color of the antenna 120 is different from the color of the light shielding layer 130 .

[0049] Specifically, the antenna 120 and the light shielding layer 130 have different colors, so that when the antenna 120 is prepared on one side of the light shielding layer 130, the structure of the antenna 120 is easier to observe.

[0050] In one embodiment, the color of the light shielding layer 130 is black. The black light shielding layer 130 has good absorption of visible light bands and can better prevent light leakage. Of course, the color of the antenna 120 can be silver or gray, etc., which is different from black.

[0051] In one embodiment, the material of the light shielding layer 130 includes ink or carbon black. Ink and carbon black are both materials with high blackness, which can ensure the light shielding effect of the light shielding layer 130. Of course, the light shielding layer 130 can also be other materials, and this application does not limit this.

[0052] In one embodiment, the light shielding layer 130 can be prepared by printing methods such as screen printing, relief printing, flexographic printing, gravure printing and offset printing. The light shielding layer 130 can adjust the printing process and select a suitable thickness according to actual conditions. Different processes or film thicknesses will result in different properties such as resistance, solder resistance and friction resistance of the light shielding layer.

[0053] Preferably, the OD (optical density) value of the light shielding layer 130 is greater than 5.

[0054] In one embodiment, the light shielding layer 130 is made of insulating material to avoid the influence between adjacent antennas 120 .

[0055] Of course, in some other implementations, the light shielding layer may not be provided on the peripheral area of ​​the cover plate.

[0056] In one embodiment, see Figure 1 and Figure 2 The antenna 120 includes a radiator 121 and a feeder 122 . The radiator 121 and the feeder 122 are both disposed on the cover body 110 , and one end of the feeder 122 is electrically connected to the radiator 121 .

[0057] Specifically, the radiator 121 is used to send and receive signals, and the feeder 122 is used to transmit signals. One end of the feeder 122 is electrically connected to the radiator 121 for transmitting the signal received and sent by the radiator 121. By setting the radiator 121 and the feeder 122 in the peripheral area PA of the cover body 110, on the one hand, compared with the solution integrated in the touch layer in the existing solution, the feeder 122 is set at the edge of the cover 10, which can reduce the overall length of the feeder 122 and reduce the signal loss in the feeder 122. On the other hand, setting both the radiator 121 and the feeder 122 on the cover body 110 improves the integration between the antenna 120 and the cover body 110.

[0058] In one embodiment, see Figure 1 The feed line 122 is located on the side of the radiator 121 away from the light-transmitting TA.

[0059] Specifically, one end of the feed line 122 close to the light-transmitting area TA is electrically connected to the radiator 121, and the other end away from the light-transmitting area TA needs to be electrically connected to the RF chip, so that the other end is further away from the light-transmitting area TA, which can avoid affecting the light-transmitting effect of the light-transmitting area TA.

[0060] In some other implementations, the feed line 122 is located on a side of the radiator 121 close to the light-transmitting TA.

[0061] In one embodiment, see Figure 5 There are two feed lines 122 , and the extension directions of the two feed lines 122 are not parallel at least in part.

[0062] Specifically, the two feed lines 122 are not parallel at some positions in the extension direction, which can reduce the current interference between the two and reduce the impact of noise, thereby weakening the side lobe energy and enhancing the main lobe energy, thereby improving the transmission performance of the feed line 122.

[0063] In one embodiment, continue to refer to Figure 5 , the shape of the feed line 122 includes an arc shape.

[0064] Specifically, the arc-shaped feeder 122 can reduce current interference in the form of multiple arcs in a smaller space, thereby ensuring the transmission performance of the feeder 122 .

[0065] Of course, in some other implementations, the shape of the feed line 122 also includes other shapes, such as a line segment, etc.

[0066] In one embodiment, the two feed lines 122 are arranged in a mirror image. The two feed lines 122 arranged in a mirror image can further reduce the current interference between the two feed lines 122.

[0067] Preferably, the shape of the radiator 121 includes at least one of a rhombus, a rectangle, a square or a circle.

[0068] Specifically, the radiator 121 may be any one of a rhombus, a rectangle, a square or a circle, or a combination of multiple shapes thereof, wherein the combination may be a form in which multiple shapes partially overlap. Of course, the shape of the radiator 121 may also be other shapes, and the specific design shall be subject to the actual situation, and this application does not make any specific limitation.

[0069] In one embodiment, the material of the radiator 121 includes at least one of nanosilver material and graphene material. Nanosilver material and graphene material have high conductivity and good electrical conductivity, and are good choices for the material of the radiator 121 .

[0070] Of course, the radiator 121 may also be made of other materials.

[0071] In one implementation, the feed line 122 may also be made of the same material as the radiator 121 , and may also be manufactured together with the radiator 121 .

[0072] In one application scenario, the radiator and the feeder are directly prepared on the cover plate body by sputtering coating and mask plate.

[0073] In one application scenario, a whole surface of conductive material is first deposited on the cover body, and then the radiator and feeder are etched out by laser etching.

[0074] In one application scenario, the radiator and the feeder are directly printed on the cover body.

[0075] In one application scenario, the radiator and the feeder are directly printed on the cover plate body by nano-imprinting.

[0076] In one embodiment, refer to Figure 6 and Figure 7 The cover 10 further includes a bonding portion 140 , which is disposed on the cover body 110 and is electrically connected to the other end of the feed line 122 .

[0077] Specifically, the bonding part 140 is provided to facilitate connection with other circuits, and the antenna 120 can communicate with the external circuit through the bonding part 140 connected to the other end of the feeder 122. The bonding part 140 can be positioned according to the position of the feeder 122, or can be positioned on the edge of the cover body 110, and the specific position setting can be adjusted according to actual conditions.

[0078] In one embodiment, the cover plate 10 further includes a flexible circuit board 150 , and the flexible circuit board 150 is bonded to the bonding portion 140 .

[0079] Specifically, by further providing a flexible circuit board 150 on the cover plate 10, the flexible circuit board 150 is bonded to the bonding portion 140, and the antenna 120 can communicate with the external circuit through the flexible circuit board 150. The provision of the flexible circuit board 150 makes the communication between the antenna 120 and the external circuit easier.

[0080] In one implementation, please continue to refer to Figure 6 and Figure 7 The cover plate 10 further includes a radio frequency chip 160 , which is integrated on the flexible circuit board 150 .

[0081] Specifically, the RF chip 160 is electrically connected to the flexible circuit board 150 , and the signal can be directly processed through the RF chip 160 , thereby enhancing the functionality of the cover plate 10 .

[0082] In one implementation, the RF chip 160 may be disposed on a surface of the flexible circuit board 150 that is away from the cover body 110 .

[0083] In another embodiment, the RF chip 160 may be disposed on a surface of the flexible circuit board 150 that is close to the cover body 110 .

[0084] In one embodiment, please refer again to Figure 6 and Figure 7 The cover plate 10 further includes a protective layer 170 , and the protective layer 170 at least covers the bonding area between the flexible circuit board 150 and the bonding portion 140 .

[0085] Specifically, the protective layer 170 is covered in the bonding area between the flexible circuit board 150 and the bonding part 140 to isolate the invasion of external water, oxygen or impurities, thereby improving the reliability of the bonding connection between the flexible circuit board 150 and the bonding part 140 and further enhancing the service life of the antenna 120.

[0086] In one embodiment, the material of the protection layer 170 is insulating glue.

[0087] In one embodiment, the protection layer 170 not only covers the bonding area between the flexible printed circuit board 150 and the bonding portion 140 , but also covers the radiator and the feeder line of the antenna 120 .

[0088] The second aspect of the present application also provides a display module 30, which includes a display area AA and a non-display area NA surrounding the display area AA. The display module 30 includes a cover plate 10 in any of the above-mentioned embodiments, wherein the display area AA is arranged corresponding to the light-transmitting area TA, and the non-display area NA is arranged corresponding to the peripheral area PA.

[0089] In one embodiment, see Figure 8 The display module 30 includes a stacked display panel 20, a polarizer 310, an optical adhesive 320 and a cover plate 10, and the display panel 20 includes a substrate 210, an array layer 220, a light-emitting layer 230 and an encapsulation layer 240 stacked in sequence. The light-transmitting area TA of the cover plate 10 corresponds to the display area AA of the display module 30, and the peripheral area PA of the cover plate 10 corresponds to the non-display area NA of the display module 30. The peripheral area PA of the cover plate 10 may correspond exactly to the non-display area NA of the display module 30, or may correspond partially to the non-display area NA of the display module 30.

[0090] In one embodiment, the antenna 120 is located between the cover body 110 and the light emitting layer 230 of the display module 30. On the one hand, arranging the antenna 120 on the side of the cover 10 close to the light emitting layer 230 can make the surface of the cover 10 away from the light emitting layer 230 more flat, and on the other hand, the antenna 120 can be better protected by the cover of the cover body 110.

[0091] See also Figure 6 In a third aspect, the present application provides a display device 40, which includes a display module 30 as described above.

[0092] Specifically, the display device 40 can be any electronic device such as a notebook, a desktop computer, a tablet computer, a mobile phone, a smart watch, a virtual display terminal, etc., and is not limited here.

[0093] The above description is only an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A cover plate, characterized in that: The cover plate comprises a light-transmitting area and a peripheral area surrounding the light-transmitting area, and the cover plate comprises: A cover plate body, located in the light-transmitting area and the peripheral area; The antenna is located on one side of the cover body and in the peripheral area.

2. The cover plate according to claim 1, characterized in that: The cover plate also includes: A light shielding layer, located on one side of the cover plate body and in the peripheral area; Preferably, the antenna is located on a side of the light shielding layer away from the cover plate body.

3. The cover plate according to claim 2, characterized in that: The color of the antenna is different from the color of the light shielding layer; Preferably, the color of the light-shielding layer is black; Preferably, the material of the light-shielding layer includes ink or carbon black.

4. The cover plate according to claim 2, characterized in that: The antenna comprises a radiator and a feeder, wherein the radiator and the feeder are both arranged on the cover body, and one end of the feeder is electrically connected to the radiator; Preferably, the feed line is located on a side of the radiator away from the light-transmitting area.

5. The cover plate according to claim 4, characterized in that: The shape of the radiator includes at least one of a rhombus, a rectangle, a square or a circle; Preferably, the material of the radiator includes at least one of nano silver material and graphene material.

6. The cover plate according to claim 4, characterized in that: The number of the feeder lines is two, and the extension directions of the two feeder lines are at least partially non-parallel; Preferably, the shape of the feed line includes an arc; Preferably, the two feeder lines are arranged in mirror image.

7. The cover plate according to claim 4, characterized in that: The cover plate also includes: A bonding part, which is arranged on the cover plate body and is electrically connected to the other end of the feeder; Preferably, the cover plate further comprises: a flexible circuit board bonded to the bonding portion; Preferably, the cover plate further includes a radio frequency chip, and the radio frequency chip is integrated on the flexible circuit board.

8. The cover plate according to claim 7, characterized in that: The cover plate also includes: The protective layer at least covers the flexible circuit board and the bonding area of ​​the bonding portion.

9. A display module, characterized in that: The display module comprises a display area and a non-display area surrounding the display area, and comprises the cover plate according to any one of claims 1 to 8, wherein the display area is arranged corresponding to the light-transmitting area, and the non-display area is arranged corresponding to the peripheral area; Preferably, the antenna is located between the cover plate body and the light-emitting layer of the display module.

10. A display device, characterized in that: Comprising the display module as claimed in claim 9.

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