CN110941113B - Display device and manufacturing method thereof - Google Patents
Display device and manufacturing method thereof Download PDFInfo
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- CN110941113B CN110941113B CN201911179613.5A CN201911179613A CN110941113B CN 110941113 B CN110941113 B CN 110941113B CN 201911179613 A CN201911179613 A CN 201911179613A CN 110941113 B CN110941113 B CN 110941113B
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- loop antenna
- circuit board
- display panel
- antenna
- cover plate
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133388—Constructional arrangements; Manufacturing methods with constructional differences between the display region and the peripheral region
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a display device and a manufacturing method thereof, wherein the display device comprises a cover plate and a display panel which are oppositely arranged; the near field communication loop antenna comprises at least one circle of first loop antenna and at least one circle of second loop antenna; the first loop antenna is positioned on one side of the cover plate close to the display panel, the second loop antenna is positioned on one side of the display panel close to the cover plate, the orthographic projection of the first loop antenna on the plane where the vertical display panel is positioned and the orthographic projection of the second loop antenna on the plane where the vertical cover plate is positioned are at least partially overlapped, and the first loop antenna and the second loop antenna are electrically connected, so that the same near field communication signal is transmitted between the first loop antenna and the second loop antenna. According to the display device, the near field communication annular antennas are respectively formed on the cover plate and the display panel, and the first annular antenna and the second annular antenna are overlapped, so that the function of near field communication can be realized, the occupied frame area of the near field communication annular antennas can be reduced, and the narrow frame can be realized.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device and a manufacturing method thereof.
Background
NFC (Near Field Communication), namely a near field communication technology, has the characteristics of short transmission distance, low energy consumption, difficulty in signal interference and the like, and is considered to be suitable for being applied to intelligent payment and intelligent wearing equipment;
in the existing products, the NFC antenna is usually an independent external circuit board, is assembled on a whole machine shell, generates additional cost, has the problems of interface abrasion and signal degradation, occupies the whole machine space, and has certain limitation on the structural design of the whole machine, such as the need of reserving a card swiping area or adopting back card swiping, is unfavorable for lightening and thinning, and limits the practicability; in the case of integrating NFC antennas of other display panels/touch panels, the antennas are generated into wires on the panels by adopting low-resistance materials, the number of turns of the antennas is more than or equal to 2 in a non-display area, the area of a frame is occupied, if the NFC antennas are designed in a box, the avoidance of a TFT driving circuit is always needed to be considered, because the NFC antennas have requirements on impedance, the NFC antennas cannot be designed too thin, otherwise, the antenna emission capacity is directly reduced, the communication effect is affected, the frame must be enlarged as a final result, the trend of the frame is against that of a narrow frame, the market is limited, meanwhile, the utilization rate of the panel display area is low, and the cost is also not advantageous.
Disclosure of Invention
In view of the above, the present invention provides a display device and a method for manufacturing the same, wherein the display device includes a cover plate and a display panel which are oppositely disposed;
the display device comprises a display area and a non-display area surrounding the display area;
the near field communication loop antenna is also included;
the near field communication loop antenna is arranged around the display area in the non-display area, and comprises at least one circle of first loop antenna and at least one circle of second loop antenna;
the first loop antenna is positioned on one side of the cover plate, which is close to the display panel, the second loop antenna is positioned on one side of the display panel, which is close to the cover plate, the orthographic projection of the first loop antenna on the plane where the vertical display panel is positioned and the orthographic projection of the second loop antenna on the plane where the vertical cover plate is positioned are at least partially overlapped, and meanwhile, the first loop antenna and the second loop antenna are electrically connected, so that the same near field communication signal is transmitted between the first loop antenna and the second loop antenna.
On the other hand, the invention also provides a manufacturing method of the display device, wherein the display device comprises a display area and a non-display area surrounding the display area; the method comprises the following steps:
providing a cover plate, and forming at least one first annular antenna on one side of the cover plate, which is close to the display panel;
providing a display panel, and forming at least one second annular antenna on one side of the display panel close to the cover plate;
the first annular antenna and the second annular antenna are arranged around the display area in the non-display area, and the orthographic projection of the first annular antenna on the plane where the vertical display panel is positioned is overlapped with the orthographic projection of the second annular antenna on the plane where the vertical cover plate is positioned;
and attaching the cover plate to the display panel, so that the second annular antenna is clamped between the cover plate and the display panel.
Compared with the prior art, the display device and the manufacturing method thereof provided by the invention have the advantages that at least the following beneficial effects are realized:
the display device of the invention respectively forms the near field communication loop antenna on the cover plate and the display panel, the near field communication loop antenna comprises the first loop antenna and the second loop antenna, the orthographic projection of the first loop antenna on the plane where the vertical display panel is positioned and the orthographic projection of the second loop antenna on the plane where the vertical cover plate is positioned are at least partially overlapped, and meanwhile, the first loop antenna and the second loop antenna are electrically connected, so that the same near field communication signal is transmitted between the first loop antenna and the second loop antenna, the frame occupation area of the near field communication loop antenna can be reduced while the function of near field communication is realized, and the narrow frame is facilitated to be realized.
Of course, it is not necessary for any one product embodying the invention to achieve all of the above technical effects at the same time.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic diagram of a display device in the prior art;
FIG. 2 is an enlarged view of a portion of the cross-over line 041 of FIG. 1;
FIG. 3 is a schematic diagram of a display device according to the present invention;
FIG. 4 is a cross-sectional view taken in the direction N-N' in FIG. 3;
FIG. 5 is a further cross-sectional view taken in the direction N-N' in FIG. 3;
FIG. 6 is a further cross-sectional view in the N-N' direction of FIG. 3
FIG. 7 is a schematic diagram of a display device according to another embodiment of the present invention;
FIG. 8 is a schematic view of the cover plate structure of FIG. 7;
FIG. 9 is a schematic view of the display panel of FIG. 7;
FIG. 10 is a schematic diagram of a display device according to another embodiment of the present invention;
FIG. 11 is a cross-sectional view taken in the direction M-M' of FIG. 10;
FIG. 12 is a schematic view of a display device according to another embodiment of the present invention;
FIG. 13 is a schematic view of a display device according to another embodiment of the present invention;
FIG. 14 is a further cross-sectional view taken from N-N' in FIG. 3;
FIG. 15 is a schematic view of a display device according to another embodiment of the present invention;
fig. 16 is a flow chart of a method for manufacturing a display device according to the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
Referring to fig. 1 and 2, fig. 1 is a schematic structural view of a display device in the prior art, and fig. 2 is a partial enlarged view of a cross line 041 in fig. 1;
the display device 100 in the prior art comprises a substrate 01, wherein the substrate 01 comprises a display area 02 and a non-display area 03 surrounding the display area 02, a loop antenna 04 is arranged on the substrate 01, the loop antenna 04 is positioned in the non-display area 03, the loop antenna 04 comprises a crossover area 041 and a loop wiring 042, the loop antenna 04 also comprises a first electrode terminal A and a second electrode terminal B, the loop wiring 042 is connected with the first electrode terminal A and the second electrode terminal B, and signals of the same loop antenna can reach the second electrode terminal B from the first electrode terminal A; the number of turns of the annular wiring 042 is at least two, so that the NFC function can be realized; the crossover 041 includes an insulating layer 05, with the insulating layer 05 sandwiched between adjacent annular traces 042 of the crossover 041. Since the loop antennas 04 are all arranged on one substrate, excessive frame areas are occupied, and the design of a narrow frame is difficult to realize; meanwhile, the thickness of the cross line area 041 and the thickness of the annular wiring 042 are different, so that the overall surface flatness of the annular antenna 04 is low, and the subsequent process difficulty and the process risk are increased.
In order to solve the above technical problems, the present invention provides a display device and a manufacturing method thereof. Embodiments of the display device and the method for manufacturing the same provided by the present invention are described in detail below.
In this embodiment, please refer to fig. 3 and 4, fig. 3 is a schematic structural diagram of a display device provided by the present invention, and fig. 4 is a cross-sectional view of fig. 3 in the N-N' direction.
The display device 200 provided in this embodiment includes a cover plate 1 and a display panel 2 disposed opposite to each other; the display device 200 further includes a display area AA and a non-display area BB surrounding the display area AA; also comprises a near field communication loop antenna 3;
the near field communication loop antenna 3 is located in the non-display area BB and is arranged around the display area AA, and the near field communication loop antenna 3 includes at least one circle of first loop antenna 31 and at least one circle of second loop antenna 32;
the first loop antenna 31 is located at one side of the cover plate 1 close to the display panel 2, the second loop antenna 32 is located at one side of the display panel 2 close to the cover plate 1, the orthographic projection of the first loop antenna 31 on the plane vertical to the display panel 2 and the orthographic projection of the second loop antenna 32 on the plane vertical to the cover plate 1 are at least partially overlapped, and meanwhile, the first loop antenna 31 and the second loop antenna 32 are electrically connected, so that the same near field communication signal is transmitted between the first loop antenna 31 and the second loop antenna 32.
It can be understood that, in fig. 3, only one loop of the first loop antenna 31 and one loop of the second loop antenna 32 are illustrated, the number of loops of the first loop antenna 31 and the second loop antenna 32 is not specifically required in the present invention, and may be set according to practical situations, and will not be described in detail.
The display device provided in this embodiment has at least the following technical effects:
in this embodiment, the near field communication loop antenna 3 is formed on the cover plate 1 and the display panel 2 respectively, the near field communication loop antenna 3 includes a first loop antenna 31 and a second loop antenna 32, and after the cover plate 1 and the display panel 2 are attached, the first loop antenna 31 and the second loop antenna 32 are partially overlapped, it can be understood that, since the near field communication loop antenna 3 is divided into two parts, and is respectively disposed on different substrates and mutually overlapped, the occupied area of the frame can be reduced; namely, under the condition of the same frame size, the width of the near field communication annular antenna 3 can be doubled, the impedance is reduced, and the performance is obviously improved, so that the display device not only can improve the capability of transmitting signals of near field communication, but also can reduce the frame area occupied by the near field communication annular antenna, thereby being beneficial to realizing narrow frames, and the coils are not required to be electrically connected through the design schemes such as holes, so that the technology is simpler.
In some alternative embodiments, referring to fig. 5 and 6, fig. 5 is a further cross-sectional view taken in the direction N-N 'in fig. 3, and fig. 6 is a further cross-sectional view taken in the direction N-N' in fig. 3.
The display device 200 in the present embodiment includes a cover plate 1 and a display panel 2 disposed opposite to each other; the display device 200 further includes a display area AA and a non-display area BB surrounding the display area AA; also comprises a near field communication loop antenna 3;
the near field communication loop antenna 3 is located in the non-display area BB and is arranged around the display area AA, and the near field communication loop antenna 3 includes at least one circle of first loop antenna 31 and at least one circle of second loop antenna 32;
the display panel 2 includes a polarizer 4;
the first loop antenna 31 is located at one side of the cover plate 1 close to the display panel 2, the second loop antenna 32 is located at one side of the polarizer far away from the cover plate, the orthographic projection of the first loop antenna 31 on the plane vertical to the display panel 2 and the orthographic projection of the second loop antenna 32 on the plane vertical to the cover plate 1 are at least partially overlapped, and meanwhile, the first loop antenna 31 and the second loop antenna 32 are electrically connected, so that the same near field communication signal is transmitted between the first loop antenna 31 and the second loop antenna 32. It will be appreciated that the display panel 2 may be an LCD liquid crystal display panel (Liquid Crystal Display) or an OLED screen (Organic Light-Emitting Diode);
with continued reference to fig. 5, when the display panel 2 is an LCD liquid crystal display panel, the display panel 2 further includes a color film substrate 21, an array substrate 22, a liquid crystal 23, and a polarizer 4, the array substrate 22 and the liquid crystal 23 sandwiched between the color film substrate 21 and the array substrate 22, the polarizer 4 includes an upper polarizer 41 and a lower polarizer 42, wherein the upper polarizer 41 is located at a side of the color film substrate 21 away from the array substrate 22, the lower polarizer 42 is located at a side of the array substrate 22 away from the color film substrate 21, and simultaneously forms the second loop antenna 32 at a side of the polarizer 41 close to the color film substrate 21, and after the second loop antenna 32 is formed, the display panel 2 is attached to the polarizer 41, so that an excessive temperature generated in a process of forming the second loop antenna 32 can be prevented from affecting the polarizer 41. With continued reference to fig. 6, when the display panel 2 is an OLED screen, an encapsulation layer 24 is disposed on a side of the display panel 2 near the cover plate 1, and optionally, the encapsulation layer may be a rigid encapsulation layer; the polaroid 4 is clamped between the packaging layer 24 of the display panel 2 and the cover plate 1, the second annular antenna 32 is formed on one side, close to the cover plate 1, of the packaging layer 24, after the second annular antenna 32 is formed, the display panel 2 is attached to the polaroid 4, and therefore the phenomenon that the temperature generated in the process of forming the second annular antenna 32 is too high and influences the polaroid 4 can be prevented. It is understood that the display panel 2 further includes an anode layer, a hole transport layer, an organic light emitting layer, an electron transport layer, and a cathode layer, but the anode layer, the hole transport layer, the organic light emitting layer, the electron transport layer, and the cathode layer in the display panel 2 are not shown in fig. 6 for the convenience of understanding the location of the loop NFC antenna.
In some alternative embodiments, referring to fig. 7, 8 and 9, fig. 7 is a schematic structural diagram of another display device provided in the present invention, fig. 8 is a schematic structural diagram of a cover plate in fig. 7, and fig. 9 is a schematic structural diagram of a display panel in fig. 7;
with continued reference to fig. 7, the near field communication loop antenna 3 in the display device 200 of the present invention includes at least one loop of the first loop antenna 31 and at least one loop of the second loop antenna 32, and only two loops of the first loop antenna 31 and two loops of the second loop antenna 32 are illustrated in this embodiment. In the display device 200 of the present embodiment, at least one circle of front projections of the first loop antenna 31 on the display panel 2 do not overlap, and at least one circle of front projections of the second loop antenna 32 on the display panel 2 do not overlap. It will be understood that, with continued reference to fig. 8 and fig. 9, the first loop antenna 31 formed on the cover plate 1 is not overlapped, and the second loop antenna 32 formed on the display panel 2 is not overlapped, so in this embodiment, the first loop antenna 31 formed on the cover plate 1 is not overlapped, and the second loop antenna 32 formed on the display panel 2 is not overlapped, which can make the flatness of the near field communication loop antenna 3 high, and is beneficial to reducing the process difficulty and the process risk.
In some alternative embodiments, referring to fig. 10, fig. 10 is a schematic structural diagram of another display device provided in the present invention. The display device 200 provided in this embodiment further includes a circuit board 5 interposed between the cover plate 1 and the display panel 2; wherein the circuit board 5 may be a flexible circuit board.
The circuit board 5 includes a first electrode terminal 51 and a second electrode terminal 52, the first electrode terminal 51 being located at a side of the circuit board 5 near the cover plate 1 in a direction perpendicular to the display panel 2, the second electrode terminal 52 being located at a side of the circuit board 5 near the display panel 2;
the first loop antenna 31 has both ends electrically connected to the first electrode terminal 51, and the second loop antenna 32 has both ends electrically connected to the second electrode terminal 52;
the first loop antenna 31 and the second loop antenna 32 are electrically connected through the circuit board 5, so that the same near field communication signal is transmitted between the first loop antenna 31 and the second loop antenna 32. The circuit board 5 may include a via hole, so that the first loop antenna 31 and the second loop antenna 32 are electrically connected through the via hole on the circuit board 5.
Because the near field communication loop antenna 3 includes the first loop antenna 31 and the second loop antenna 32, the first loop antenna 31 and the second loop antenna 32 are respectively arranged on the cover plate 1 and the display panel 2, the circuit board 5 in the embodiment is provided with the first electrode terminal 51 and the second electrode terminal 52 at two ends close to the cover plate 1 and the display panel 2 respectively, the near field communication loop antenna 3 can be directly electrically connected with the circuit board 5, and additional wiring is not required to be arranged to electrically connect the first loop antenna 31 and the second loop antenna 32 which are respectively arranged on the cover plate 1 and the display panel 2 with the circuit board, thereby being beneficial to wiring design and simplifying process difficulty.
In some alternative embodiments, referring to FIG. 11, FIG. 11 is a cross-sectional view taken along the direction M-M' in FIG. 10. The display device 200 provided in this embodiment includes a circuit board 5 interposed between a cover plate 1 and a display panel 2;
the circuit board 5 includes a first electrode terminal 51 and a second electrode terminal 52, the first electrode terminal 51 being located at a side of the circuit board 5 near the cover plate 1 in a direction perpendicular to the display panel 2, the second electrode terminal 52 being located at a side of the circuit board 5 near the display panel 2;
the conductive adhesive 6 is further included, two ends of the first loop antenna 31 are electrically connected with the first electrode terminal 51 through the conductive adhesive 6, two ends of the second loop antenna 32 are electrically connected with the second electrode terminal 52 through the conductive adhesive 6, and optionally, the conductive adhesive 6 can be anisotropic conductive Adhesive (ACF); the first loop antenna 31 and the second loop antenna 32 are electrically connected through the circuit board 5, so that the same near field communication signal is transmitted between the first loop antenna 31 and the second loop antenna 32, and the display device 200 can realize a near field communication function.
In some alternative embodiments, referring to fig. 12, fig. 12 is a schematic structural diagram of another display device provided in the present invention. The display device 200 provided in this embodiment further includes a circuit board 5 interposed between the cover plate 1 and the display panel 2;
the circuit board 5 includes a first electrode terminal 51 and a second electrode terminal 52, and also includes a first circuit board 53 and a second circuit board 54;
the first electrode terminal 51 of the circuit board 5 is located on the first circuit board 53;
the second electrode terminal 52 of the circuit board 5 is located on the second circuit board 54;
the first circuit board 53 and the second circuit board 54 are electrically connected.
In the direction perpendicular to the display panel 2, the first electrode terminal 51 is located at a side of the circuit board 5 close to the cap plate 1, and the second electrode terminal 52 is located at a side of the circuit board 5 close to the display panel 2;
the first loop antenna 31 has both ends electrically connected to the first electrode terminal 51, and the second loop antenna 32 has both ends electrically connected to the second electrode terminal 52;
the first loop antenna 31 and the second loop antenna 32 are electrically connected through the circuit board 5, so that the same near field communication signal is transmitted between the first loop antenna 31 and the second loop antenna 32.
Since the near field communication loop antenna 3 includes the first loop antenna 31 and the second loop antenna 32, the first loop antenna 31 and the second loop antenna 32 are respectively disposed on the cover plate 1 and the display panel 2, the circuit board 5 in this embodiment includes the first circuit board 53 and the second circuit board 54, the first circuit board 53 is electrically connected with the first loop antenna 31 through the first electrode terminal 51, the second circuit board 54 is electrically connected with the second loop antenna 32 through the second electronic terminal 52, and then the first circuit board 53 and the second circuit board 54 are electrically connected, so that the manufacturing process can be simplified, and the implementation is easy.
In some alternative embodiments, referring to fig. 13, fig. 13 is a schematic structural diagram of another display device provided in the present invention. The display device 200 provided in this embodiment further includes a circuit board 5 interposed between the cover plate 1 and the display panel 2;
the circuit board 5 includes a first electrode terminal 51 and a second electrode terminal 52, and also includes a first circuit board 53 and a second circuit board 54;
the first electrode terminal 51 of the circuit board 5 is located on the first circuit board 53;
the second electrode terminal 52 of the circuit board 5 is located on the second circuit board 54;
with continued reference to fig. 13, the first circuit board 53 and the second circuit board 54 are electrically connected by soldering or the connector 7; fig. 13 illustrates only that the first circuit board 53 and the second circuit board 54 are electrically connected by the connector 7, and does not illustrate that the first circuit board 53 and the second circuit board 54 are electrically connected by soldering.
In the direction perpendicular to the display panel 2, the first electrode terminal 51 is located at a side of the circuit board 5 close to the cap plate 1, and the second electrode terminal 52 is located at a side of the circuit board 5 close to the display panel 2;
the first loop antenna 31 has both ends electrically connected to the first electrode terminal 51, and the second loop antenna 32 has both ends electrically connected to the second electrode terminal 52;
the first loop antenna 31 and the second loop antenna 32 are electrically connected through the circuit board 5, so that the same near field communication signal is transmitted between the first loop antenna 31 and the second loop antenna 32.
The first circuit board 53 and the second circuit board 54 in the display device 200 of the embodiment can be electrically connected in various manners, so that the practicability is high, and the manufacturing is facilitated.
In some alternative embodiments, with continued reference to FIG. 4, FIG. 4 is a cross-sectional view taken along line N-N' in FIG. 3. The display device 200 provided in this embodiment includes a cover plate 1 and a display panel 2 disposed opposite to each other; the display device 200 further includes a display area AA and a non-display area BB surrounding the display area AA; also comprises a near field communication loop antenna 3;
the near field communication loop antenna 3 is located in the non-display area BB and is arranged around the display area AA, and the near field communication loop antenna 3 includes at least one circle of first loop antenna 31 and at least one circle of second loop antenna 32;
the first loop antenna 31 is positioned at one side of the cover plate 1 close to the display panel 2, the second loop antenna 32 is positioned at one side of the display panel 2 close to the cover plate 1, the orthographic projection of the first loop antenna 31 on the plane vertical to the display panel 2 is overlapped with the orthographic projection of the second loop antenna 32 on the plane vertical to the cover plate 1 at least partially, and meanwhile, the first loop antenna 31 and the second loop antenna 32 are electrically connected, so that the same near field communication signal is transmitted between the first loop antenna 31 and the second loop antenna 32; wherein an insulating layer 8 is provided between the first loop antenna 31 and the second loop antenna 32 in a direction perpendicular to the display panel 2. Laminating apron 1 and display panel 2 through insulating layer 8, make apron 1 and display panel 2 press from both sides and establish near field communication loop antenna 3, can reduce reflection of light and play sealed apron 1 and display panel 2's beneficial effect.
In some alternative embodiments, referring to fig. 4 and 14, fig. 4 is a cross-sectional view taken from N-N 'toward fig. 3, and fig. 14 is a cross-sectional view taken from N-N' toward fig. 3. The insulating layer 8 in the display device 200 provided in this embodiment is an optical adhesive 81 or a frame adhesive 82. Fig. 4 only illustrates that the insulating layer 8 is the optical adhesive 81, fig. 14 only illustrates that the insulating layer 8 is the frame adhesive 82, and the cover plate 1 and the display panel 2 are attached by the optical adhesive 81, so that the beneficial effects of light reflection, ash entering prevention and the like can be reduced. The frame glue 82 is arranged on the periphery of the joint between the cover plate 1 and the display panel 2 to joint the cover plate 1 and the display panel 2, so that the reinforcing effect can be achieved. It is to be understood that, when the first insulating layer 101 and the second insulating layer 102 may be frame glue or optical glue, they are not specifically limited, and may be set according to practical situations.
In some alternative embodiments, referring to fig. 15, fig. 15 is a schematic structural diagram of another display device provided in the present invention. The display device 200 provided in this embodiment further includes a circuit board 5, where the circuit board 5 is sandwiched between the cover plate 1 and the display panel 2; wherein the circuit board 5 may be a flexible circuit board.
The circuit board 5 includes a first electrode terminal 51 and a second electrode terminal 52, the first electrode terminal 51 being located at a side of the circuit board 5 near the cover plate 1 in a direction perpendicular to the display panel 2, the second electrode terminal 52 being located at a side of the circuit board 5 near the display panel 2;
the first loop antenna 31 has both ends electrically connected to the first electrode terminal 51, and the second loop antenna 32 has both ends electrically connected to the second electrode terminal 52;
the first loop antenna 31 and the second loop antenna 32 are electrically connected through the circuit board 5, so that the same near field communication signal is transmitted between the first loop antenna 31 and the second loop antenna 32, and further, the first loop antenna 31 and the second loop antenna 32 are electrically connected with a grounding signal at the same time, so that the same near field communication signal is transmitted between the first loop antenna 31 and the second loop antenna 32, preferably, the grounding signal is located at the middle position of the first loop antenna 31 and the second loop antenna 32, and can serve as a zero position of the whole circuit, symmetry of the near field communication loop antenna 3 is further enhanced, and the symmetrically arranged field communication loop antenna 3 has strong electromagnetic anti-interference capability, so that electromagnetic anti-interference capability of the display device 200 can be improved, and the grounding point is simultaneously beneficial to improving electrostatic protection capability of the display device.
In some alternative embodiments, with continued reference to fig. 3, fig. 3 is a schematic structural diagram of a display device according to the present invention. The display device 200 in the present embodiment includes a cover plate 1 and a display panel 2 disposed opposite to each other; the display device 200 further includes a display area AA and a non-display area BB surrounding the display area AA; also comprises a near field communication loop antenna 3;
the near field communication loop antenna 3 is located in the non-display area BB and is arranged around the display area AA, and the near field communication loop antenna 3 includes at least one circle of first loop antenna 31 and at least one circle of second loop antenna 32;
the first loop antenna 31 is located at one side of the cover plate 1 close to the display panel 2, the second loop antenna 32 is located at one side of the display panel 2 close to the cover plate 1, the orthographic projection of the first loop antenna 31 on the plane vertical to the display panel 2 and the orthographic projection of the second loop antenna 32 on the plane vertical to the cover plate 1 are at least partially overlapped, and meanwhile, the first loop antenna 31 and the second loop antenna 32 are electrically connected, so that the same near field communication signal is transmitted between the first loop antenna 31 and the second loop antenna 32.
The near field communication annular antenna 3 is made of nano silver paste or metal wires, and when the near field communication annular antenna 3 is made of nano silver paste, the nano silver paste has good conductivity, and the cost is low through screen printing, so that the cost is saved; when the near field communication loop antenna 3 is a metal wire, the metal wire is convenient for light and thin.
In some alternative embodiments, referring to fig. 16, fig. 16 is a flow chart of a manufacturing method of a display device according to the present invention. The display device 200 of the present invention includes a display area and a non-display area surrounding the display area; the method comprises the following steps:
step 101, providing a cover plate, and forming at least one first annular antenna on one side of the cover plate, which is close to the display panel; providing a display panel, and forming at least one second annular antenna on one side of the display panel close to the cover plate; the first annular antenna can be formed on the cover plate through screen printing, or formed through evaporation, sputtering and etching; meanwhile, the second annular antenna can be formed on the display panel through screen printing, or the second annular antenna can be formed through evaporation, sputtering and etching.
102, arranging a first annular antenna and a second annular antenna around a display area in a non-display area, wherein the orthographic projection of the first annular antenna on a plane where a vertical display panel is positioned is overlapped with the orthographic projection of the second annular antenna on a plane where a vertical cover plate is positioned;
and 103, attaching the cover plate to the display panel, and enabling the second annular antenna to be clamped between the cover plate and the display panel.
In this embodiment, the near field communication loop antenna is formed on the cover plate and the display panel respectively, the near field communication loop antenna includes a first loop antenna and a second loop antenna, and after the cover plate and the display panel are attached, the first loop antenna and the second loop antenna are partially overlapped, it can be understood that the near field communication loop antenna is divided into two parts, and the two parts are respectively arranged on different substrates and are mutually overlapped, so that the occupied area of the frame can be reduced; namely, under the condition of the same frame size, the width of the near field communication annular antenna can be doubled, the impedance is reduced, and the performance is obviously improved, so that the display device not only can improve the capability of transmitting signals of near field communication, but also can reduce the frame area occupied by the near field communication annular antenna at the same time, and is beneficial to realizing a narrow frame.
In some alternative embodiments, in step 101, the display panel includes a polarizer, a second loop antenna is formed on a side of the polarizer away from the cover plate, and then the polarizer is attached on a side of the second loop antenna close to the cover plate.
After the display panel forms the second annular antenna, the display panel is attached to the polaroid, and the second annular antenna is clamped between the display panel and the polaroid, so that the second annular antenna can be prevented from being influenced when being formed by evaporation, sputtering and etching.
In some alternative embodiments, in step 101, at least one circle of front projections of the first loop antenna on the display panel do not overlap, and at least one circle of front projections of the second loop antenna on the display panel do not overlap. When the display device in this embodiment does not overlap between the first loop antennas formed on the cover plate and does not overlap between the second loop antennas formed on the display panel, so in this embodiment, the first loop antennas formed on the cover plate do not overlap and the second loop antennas formed on the display panel do not overlap, so that the flatness of the near field communication loop antennas is high, and the process difficulty and the process risk are reduced.
In some alternative embodiments, in step 102, the method further includes fabricating a circuit board, the circuit board being located in the non-display area;
in a direction perpendicular to the display panel, the circuit board forms a first electrode terminal on a side close to the cover plate and forms a second electrode terminal on a side close to the display panel;
the first loop antenna is electrically connected with the first electrode terminal, the second loop antenna is electrically connected with the second electrode terminal, and the first loop antenna is electrically connected with the second loop antenna through the circuit board, so that the same near field communication signal is transmitted between the first loop antenna and the second loop antenna. Because near field communication loop antenna includes first loop antenna and second loop antenna, with first loop antenna and second loop antenna set up respectively on apron and display panel, the circuit board in this embodiment sets up first electrode terminal and second electrode terminal respectively at the both ends that are close to apron and display panel, can make near field communication loop antenna direct and circuit board electricity be connected, need not to set up extra wiring and make first loop antenna and second loop antenna and the circuit board electricity that set up respectively on apron and display panel be connected, is favorable to the wiring design, simplifies the technology degree of difficulty.
In some alternative embodiments, in step 102, the circuit board is two first and second circuit boards that are independent of each other;
in the direction perpendicular to the display panel, the first circuit board is provided with a first electrode terminal at one side close to the cover plate, and the second circuit board is provided with a second electrode terminal at one side close to the display panel;
coating conductive adhesive between the first electrode terminal and the first loop antenna, and coating conductive adhesive between the second electrode terminal and the second loop antenna;
the first annular antenna is electrically connected with the first electrode terminal through conductive adhesive, the second annular antenna is electrically connected with the second electrode terminal through conductive adhesive, one end of the first annular antenna is electrically connected with one end of the second annular antenna, and the same near field communication signal is transmitted between the first annular antenna and the second annular antenna;
in step 103, an insulating layer is coated between the cover plate and the display panel; and attaching the cover plate and the display panel.
Because the near field communication loop antenna includes first loop antenna and second loop antenna, set up first loop antenna and second loop antenna on apron and display panel respectively, the circuit board in this embodiment includes first circuit board and second circuit board, passes through first electrode terminal electricity with first loop antenna to be connected, passes through second electron terminal electricity with second circuit board and second loop antenna to be connected, later with first circuit board and second circuit board electricity connection, laminating apron and display panel at last, can simplify the manufacturing process, easy realization.
In some alternative embodiments, in step 102, a connector is disposed between or soldered to the first circuit board and the second circuit board to electrically connect the first circuit board and the second circuit board. The first circuit board and the second circuit board in the display device in the embodiment can be electrically connected in various modes, so that the practicability is high, and the manufacture is facilitated.
In some alternative embodiments, in step 102, the first loop antenna and the second loop antenna are electrically connected to a ground signal at the same time, so that the same near field communication signal is transmitted between the first loop antenna and the second loop antenna. The grounding signal is further located at the middle position of the first annular antenna and the second annular antenna, the grounding signal can be used as a zero position of the whole line, symmetry of the near field communication annular antenna is further enhanced, and the symmetrically arranged field communication annular antenna has strong electromagnetic anti-interference capability, so that the electromagnetic anti-interference capability of the display device can be improved.
In some alternative embodiments, in step 103, an insulating layer is coated between the cover plate and the display panel; and attaching the cover plate and the display panel. The insulating layer is made of frame glue or optical glue. The cover plate is attached to the display panel through the optical cement, so that the beneficial effects of reflecting light, preventing dust from entering and the like can be reduced. The frame glue is arranged on the periphery of the joint of the cover plate and the display panel to joint the cover plate and the display panel, so that the reinforcing effect can be achieved.
According to the embodiment, the display device provided by the invention has at least the following beneficial effects:
the display device of the invention respectively forms the near field communication loop antenna on the cover plate and the display panel, the near field communication loop antenna comprises the first loop antenna and the second loop antenna, the orthographic projection of the first loop antenna on the plane where the vertical display panel is positioned and the orthographic projection of the second loop antenna on the plane where the vertical cover plate is positioned are at least partially overlapped, and meanwhile, the first loop antenna and the second loop antenna are electrically connected, so that the same near field communication signal is transmitted between the first loop antenna and the second loop antenna, the frame occupation area of the near field communication loop antenna can be reduced while the function of near field communication is realized, and the narrow frame is facilitated to be realized.
While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (13)
1. A display device is characterized by comprising a cover plate and a display panel which are oppositely arranged;
the display device includes a display area and a non-display area surrounding the display area;
the near field communication loop antenna is also included;
the display device includes a polarizer;
the near field communication loop antenna is positioned in the non-display area and arranged around the display area, and comprises at least one circle of first loop antenna and at least one circle of second loop antenna;
the first annular antenna is positioned on one side of the cover plate, which is close to the display panel, the second annular antenna is positioned on one side of the polaroid, which is far away from the cover plate, and the orthographic projection of the first annular antenna on the plane of the display panel is at least partially overlapped with the orthographic projection of the second annular antenna on the plane of the cover plate;
at least one circle of front projection of the first annular antenna on the display panel is not overlapped, and at least one circle of front projection of the second annular antenna on the display panel is not overlapped;
the circuit board is clamped between the cover plate and the display panel;
the circuit board comprises a first electrode terminal and a second electrode terminal, the first electrode terminal is positioned on one side of the circuit board close to the cover plate in the direction perpendicular to the display panel, and the second electrode terminal is positioned on one side of the circuit board close to the display panel;
the two ends of the first loop antenna are electrically connected with the first electrode terminal, and the two ends of the second loop antenna are electrically connected with the second electrode terminal;
the first loop antenna and the second loop antenna are electrically connected through the circuit board, so that the same near field communication signal is transmitted between the first loop antenna and the second loop antenna.
2. The display device of claim 1, further comprising a conductive paste,
the first electrode terminal of the circuit board is electrically connected with the first annular antenna through the conductive adhesive;
the second electrode terminal of the circuit board is electrically connected with the second loop antenna through the conductive adhesive.
3. The display device of claim 1, wherein the circuit board comprises a first circuit board and a second circuit board;
the first electrode terminal of the circuit board is positioned on the first circuit board;
the second electrode terminal of the circuit board is positioned on the second circuit board;
the first circuit board and the second circuit board are electrically connected.
4. A display device according to claim 3, wherein the first circuit board and the second circuit board are electrically connected by soldering or a connector.
5. The display device according to claim 1, wherein an insulating layer is provided between the first loop antenna and the second loop antenna in a direction perpendicular to the display panel.
6. The display device of claim 5, wherein the insulating layer is a frame glue, the frame glue comprising an optical glue.
7. The display device of claim 1, wherein the first loop antenna and the second loop antenna are electrically connected to a ground signal at the same time such that the same near field communication signal is transmitted between the first loop antenna and the second loop antenna.
8. The display device of claim 1, wherein the near field communication loop antenna is nano silver paste or metal traces.
9. A method of manufacturing a display device, wherein the display device comprises a display region and a non-display region surrounding the display region; the method comprises the following steps:
providing a cover plate, and forming at least one circle of first annular antenna on one side of the cover plate, which is close to the display panel;
providing a display panel, forming at least one circle of second annular antenna on one side of the display panel close to the cover plate, and attaching a polaroid on one side of the second annular antenna close to the cover plate;
the first annular antenna and the second annular antenna are positioned in the non-display area and are arranged around the display area, and the orthographic projection of the first annular antenna on the plane of the display panel is overlapped with the orthographic projection of the second annular antenna on the plane of the cover plate;
when the cover plate is attached to the display panel, the second annular antenna is clamped between the display panel and the polaroid;
at least one circle of front projection of the first annular antenna on the display panel is not overlapped, and at least one circle of front projection of the second annular antenna on the display panel is not overlapped;
manufacturing a circuit board, wherein the circuit board is positioned in the non-display area;
in a direction perpendicular to the display panel, the circuit board forms a first electrode terminal at a side close to the cap plate and forms a second electrode terminal at a side close to the display panel;
the first loop antenna is electrically connected with the first electrode terminal, the second loop antenna is electrically connected with the second electrode terminal, and the first loop antenna is electrically connected with the second loop antenna through the circuit board, so that the same near field communication signal is transmitted between the first loop antenna and the second loop antenna.
10. The method of claim 9, wherein the circuit board is two first and second circuit boards that are independent of each other;
in the direction perpendicular to the display panel, the first circuit board is provided with a first electrode terminal on one side close to the cover plate, and the second circuit board is provided with a second electrode terminal on one side close to the display panel;
coating a conductive adhesive between a first electrode terminal and the first loop antenna, and coating a conductive adhesive between the second electrode terminal and the second loop antenna;
the first loop antenna and the first electrode terminal are electrically connected through the conductive adhesive, the second loop antenna and the second electrode terminal are electrically connected through the conductive adhesive, one end of the first loop antenna and one end of the second loop antenna are electrically connected, and the same near field communication signal is transmitted between the first loop antenna and the second loop antenna;
coating an insulating layer between the cover plate and the display panel;
and attaching the cover plate and the display panel.
11. The method of manufacturing according to claim 10, wherein a connector is provided between the first circuit board and the second circuit board or the first circuit board and the second circuit board are soldered to electrically connect the first circuit board and the second circuit board.
12. The method of claim 11, wherein the first loop antenna and the second loop antenna are electrically connected to a ground signal at the same time, such that the same near field communication signal is transmitted between the first loop antenna and the second loop antenna.
13. The method of claim 11, wherein the insulating layer is a frame glue, and the frame glue comprises an optical glue.
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| CN111430443A (en) * | 2020-04-29 | 2020-07-17 | 武汉华星光电半导体显示技术有限公司 | Organic light emitting display and manufacturing method thereof |
| CN112003011B (en) * | 2020-09-04 | 2023-07-18 | 京东方科技集团股份有限公司 | Antenna, display panel, manufacturing method and display device |
| CN112783372B (en) * | 2021-01-28 | 2023-04-18 | 维沃移动通信有限公司 | Electronic device and display device |
| CN112817482B (en) * | 2021-01-28 | 2024-03-01 | 维沃移动通信有限公司 | Electronic equipment and display module |
| CN112927614B (en) * | 2021-01-28 | 2023-06-16 | 维沃移动通信有限公司 | Electronic device and display device |
| CN112785927B (en) * | 2021-01-28 | 2024-01-19 | 维沃移动通信有限公司 | Electronic equipment and display module |
| CN112787691A (en) * | 2021-01-28 | 2021-05-11 | 维沃移动通信有限公司 | Electronic equipment and display module |
| CN112927613B (en) * | 2021-01-28 | 2023-07-07 | 维沃移动通信有限公司 | Electronic equipment and display module |
| CN114530694B (en) | 2022-04-24 | 2022-07-05 | 云谷（固安）科技有限公司 | Wireless communication structure, display panel and wireless communication device |
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| CN110941113A (en) | 2020-03-31 |
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