CN112259585B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN112259585B CN112259585B CN202011128036.XA CN202011128036A CN112259585B CN 112259585 B CN112259585 B CN 112259585B CN 202011128036 A CN202011128036 A CN 202011128036A CN 112259585 B CN112259585 B CN 112259585B
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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
- H10K59/40—OLEDs integrated with touch screens
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/58—Structural electrical arrangements for semiconductor devices not otherwise provided for, e.g. in combination with batteries
- H01L23/64—Impedance arrangements
- H01L23/66—High-frequency adaptations
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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
- H01Q1/2283—Supports; Mounting means by structural association with other equipment or articles mounted in or on the surface of a semiconductor substrate as a chip-type antenna or integrated with other components into an IC package
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
- H01Q17/004—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems using non-directional dissipative particles, e.g. ferrite powders
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2223/00—Details relating to semiconductor or other solid state devices covered by the group H01L23/00
- H01L2223/58—Structural electrical arrangements for semiconductor devices not otherwise provided for
- H01L2223/64—Impedance arrangements
- H01L2223/66—High-frequency adaptations
- H01L2223/6661—High-frequency adaptations for passive devices
- H01L2223/6677—High-frequency adaptations for passive devices for antenna, e.g. antenna included within housing of semiconductor device
Abstract
The embodiment of the application provides a display panel and display equipment. The display panel includes: the touch structure comprises receiving electrodes and sending electrodes which are positioned on different film layers; an antenna structure comprising a first electrode, a first feed line and a second electrode; the first electrode is electrically connected with the first feeder line, and the first electrode is positioned on one side of the receiving electrode, which is far away from the sending electrode; the second electrode and the transmitting electrode are arranged in the same layer. In the display panel provided by the embodiment of the application, the second electrode of the antenna structure and the sending electrode of the touch structure are located on the same film layer, and compared with the case of independently setting the antenna structure, the film layer structure of the display panel is simplified, the thickness of the display panel can be effectively reduced, and the development of the display panel in a light and thin manner is facilitated. The production process of the display panel is simplified, and the production efficiency of the display panel is improved.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and display equipment.
Background
With the development of display technology and communication technology, display devices, especially mobile display devices such as mobile phones and tablet computers, are now required to communicate with more and more external devices, for example, for 5G (5 th-Generation, fifth Generation mobile communication technology) mobile display devices, more antenna structures are required to be arranged inside the mobile display devices to meet the communication requirements of the mobile display devices.
However, the increased antenna structures occupy the internal space of the mobile display device, so that the overall size of the mobile display device is increased, which is not beneficial to the use of users. Therefore, some mechanisms integrate part of the antenna structure of the mobile display device into the display panel, but directly disposing the antenna structure in the display panel increases the thickness of the display panel, so that the overall thickness of the mobile display device increases.
Disclosure of Invention
The application aims at the defects of the prior art and provides a display panel and display equipment, and the technical problem that the thickness of the display panel integrated with an antenna structure is large in the prior art is solved.
In a first aspect, an embodiment of the present application provides a display panel, including:
the touch structure comprises receiving electrodes and sending electrodes which are positioned on different film layers;
an antenna structure comprising a first electrode, a first feed line and a second electrode; the first electrode is electrically connected with the first feeder line, and the first electrode is positioned on one side of the receiving electrode, which is far away from the sending electrode; the second electrode and the transmitting electrode are arranged in the same layer.
In a second aspect, an embodiment of the present application provides a display device, including: a circuit board, a driving circuit and the display panel provided by the first aspect;
the first feeder of the antenna structure in the display panel is electrically connected with the second feeder of the circuit board, and the driving circuit is attached to the circuit board and electrically connected with the circuit board.
The beneficial technical effects brought by the technical scheme provided by the embodiment of the application comprise:
in the display panel provided by the embodiment of the application, the second electrode of the antenna structure and the sending electrode of the touch structure are located on the same film layer, and compared with the case of independently setting the antenna structure, the film layer structure of the display panel is simplified, the thickness of the display panel can be effectively reduced, and the development of the display panel in a light and thin manner is facilitated. Meanwhile, the production process of the display panel is simplified, and the production efficiency of the display panel is improved.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic top view of a display panel according to an embodiment of the present disclosure;
fig. 2 is a cross-sectional view along direction AB of the display panel shown in fig. 1 according to an embodiment of the present disclosure;
fig. 3 is an enlarged schematic structural diagram of a display panel shown in fig. 1 according to an embodiment of the present disclosure;
fig. 4 is a schematic view of a connection structure of a circuit board and a driving circuit in a display device according to an embodiment of the present disclosure.
Description of reference numerals:
100-a non-display area; 200-a display area;
10-a substrate base plate;
20-thin film transistor film layer structure;
301-pixel definition structure; 302-a support layer; 303-anode layer; 304-a hole transport layer; 305-a light emitting layer; 306-an electron transport layer; 307-electron blocking layer; 308-a cathode layer;
401 — a first inorganic encapsulation layer; 402-a first organic encapsulation layer; 403-a second organic encapsulation layer; 404-a wave absorbing structure;
501-a transmitting electrode; 502-a second electrode; 503-ground line; 504-a first insulating layer; 505-a receiving electrode; 506-a second insulating layer; 507-a first flat layer; 508-a first electrode; 509-a first feed line; 510-a second planar layer; 511-a buffer layer;
60-a circuit board; 601-a second feeder;
70-drive circuit.
Detailed Description
Reference will now be made in detail to the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts or parts having the same or similar functions throughout. In addition, if a detailed description of the known art is not necessary for illustrating the features of the present application, it is omitted. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present application and are not construed as limiting the present application.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments.
An embodiment of the application provides a display panel, as shown in fig. 1, a schematic top view structure of the display panel, and as shown in fig. 2, a sectional view along the direction AB of the display panel shown in fig. 1. The display panel includes: the touch structure comprises a receiving electrode 505 and a sending electrode 501 which are positioned on different film layers; an antenna structure comprising a first electrode 508, a first feed line 509 and a second electrode 502; the first electrode 508 is electrically connected to the first feed line 509, and the first electrode 508 is located on the side of the receiving electrode 505 away from the transmitting electrode 501; the second electrode 502 is provided in the same layer as the transmission electrode 501.
In the display panel provided in the embodiment of the application, the second electrode 502 of the antenna structure and the transmitting electrode 501 of the touch structure are located on the same film layer, so that compared with a case where the antenna structure is separately arranged, the film layer structure of the display panel is simplified, the thickness of the display panel can be effectively reduced, and the display panel is favorable for development of lightness and thinness. Meanwhile, the production process of the display panel is simplified, and the production efficiency of the display panel is improved.
Specifically, as shown in fig. 2, the display panel includes a substrate 10, a thin film transistor film structure 20 disposed on one side of the substrate 10, a pixel defining structure 301, a supporting layer 302, an anode layer 303, a hole transport layer 304, a light emitting layer 305, an electron transport layer 306, an electron blocking layer 307, and a cathode layer 308, wherein the cathode layer 308 covers the electron blocking layer 307, the supporting layer 302, and the pixel defining structure 301. A touch structure and an antenna structure of the display panel are arranged on one side of the cathode layer 308 away from the substrate 10, and the touch film layer comprises a receiving electrode 505 and a sending electrode 501 which are positioned on different film layers; the first electrode 508 of the antenna structure is electrically connected to the first feed line 509, the first electrode 508 is located on the side of the receiving electrode 505 away from the transmitting electrode 501, and the second electrode 502 of the antenna structure is disposed on the same layer as the transmitting electrode 501.
Compared with a display panel with an antenna structure separately, in the display panel provided in the embodiment of the present application, the second electrode 502 of the antenna structure and the transmitting electrode 501 of the touch structure are located on the same film layer, so that the film layer structure of the display panel is simplified, the thickness of the display panel can be effectively reduced, and the display panel is beneficial to development of light and thin. Meanwhile, in the process of manufacturing the display panel, the transmitting electrode 501 of the touch structure and the second electrode 502 of the antenna structure can be simultaneously prepared from the same material, so that the production process of the display panel can be simplified, and the production efficiency of the display panel can be effectively improved.
In the embodiment of the present application, the antenna structure further includes a ground line 503, one end of the ground line 503 is electrically connected to the second electrode 502, and the other end is grounded; the first electrode 508 of the antenna structure is electrically connected to a first feed line 509, and a power supply is provided to the first electrode 508 through the first feed line 509, and when the power supply is connected, the first electrode 508 and the second electrode 502 generate an electromagnetic wave signal with a certain frequency under the action of an alternating current.
It should be noted that in the embodiment of the present application, the transmitting electrode 501 and the second electrode 502 are made of the same metal material, and the metal material includes titanium, aluminum, and nano silver wire. The first electrode 508 is a mesh structure composed of metal wires.
In one embodiment of the present application, a dielectric layer is disposed between the first electrode 508 and the second electrode 502 of the antenna structure, and the dielectric layer includes at least one organic film layer and at least one inorganic film layer. In the embodiment of the present application, the inorganic film includes a first insulating layer 504 and a second insulating layer 506, which are film structures such as silicon nitride located between the receiving electrode 505 and the transmitting electrode 501; the organic film layer includes a first flat layer 507, a second flat layer 510, and the like, and includes a UV-curable insulating adhesive layer made of an acryl material.
In the display panel provided in the embodiment of the present application, as shown in fig. 2, a plurality of organic film layers and inorganic film layers are included between the first electrode 508 and the second electrode 502 of the antenna structure, and the adjustment of the operating frequency of the antenna structure can be achieved by adjusting the number of the organic film layers and the inorganic film layers in the dielectric layer or the type of the preparation material. In the embodiment of the application, the dielectric layer comprises a part of touch control structure, so that the film layer structure of the display panel is further simplified, and the thickness of the display panel is further reduced; meanwhile, in the process of manufacturing the display panel, the preparation of the antenna structure partial dielectric layer is completed while the touch structure is prepared, and the production process of the display panel is simplified, so that the production efficiency of the display panel is further effectively improved.
It should be noted that, in the embodiment of the present application, in order to avoid interference between the touch structure and the antenna structure in the display panel and other film structures of the display panel, in the embodiment of the present application, a buffer layer 511 is disposed on a side of the second organic encapsulation layer 403 away from the cathode layer 308, and the buffer layer 511 is made of a silicon nitride material, so as to ensure insulation performance between the touch structure and the antenna structure and other film structures, and ensure normal operation of the touch structure and the antenna structure.
In one embodiment of the present application, the display panel includes a display area 200 and a non-display area 100 surrounding the display area 200, and the first feed line 509 of the antenna structure extends from the display area 100 to the non-display area 200.
In this embodiment, the first feeding line 509 of the antenna structure needs to be electrically connected to the circuit board, so as to complete normal operation and signal transmission of the antenna structure, and in order to avoid an influence of a connection position between the antenna structure and the circuit board on a display effect of the display panel and a thickness of the display panel, the connection position needs to be disposed at a position away from the display area 200 of the display panel, so that the length of the first feeding line 509 needs to be extended, so that the first feeding line 509 extends from the display area 100 to the non-display area 200 and is electrically connected to the circuit board.
In one embodiment of the present application, the display panel further comprises an absorbing structure 404, a cathode layer 308 in the light emitting device film layer on the side close to the antenna structure.
In the embodiment of the present application, the anode layer 303 of the display panel is made of ITO (indium tin oxide), the cathode layer 308 is made of magnesium, silver, and the like, and since the cathode layer 308 covers the electronic blocking layer 307, the supporting layer 302, and the pixel definition structure 301, which are continuous film structures, in the working process of the antenna structure, the electromagnetic waves emitted by the antenna structure easily enter the cathode layer 308 and generate the eddy current effect and the skin effect, which further causes the loss of the electromagnetic waves and the increase of the temperature of the cathode layer 308, thereby affecting the normal operation of the antenna structure and the normal operation of the display panel, and meanwhile, the increase of the temperature of the cathode layer 308 easily causes the local temperature of the display panel to exceed the temperature range of the normal operation, which affects the lifetime of the display panel and increases the potential safety hazard of the display panel and the display device.
Therefore, in the embodiment of the present application, the wave-absorbing structure 404 is disposed on a side, close to the antenna structure, of the cathode layer 308 in the film layer of the light-emitting device, and the wave-absorbing structure 404 is configured to absorb electromagnetic waves, collect the electromagnetic waves, and reduce reflection loss caused by the electromagnetic waves of the antenna structure entering the cathode layer 308, so as to improve the electromagnetic wave signal intensity of the antenna structure. The wave-absorbing structure 404 has high magnetic permeability and low magnetic loss, so that an electromagnetic wave can be conducted inside the wave-absorbing structure 404 to form a loop, the quantity of electromagnetic waves entering the cathode layer 308 is reduced, the electromagnetic shielding of the cathode layer 308 on the antenna structure is weakened, the temperature rise degree of the cathode layer 308 caused by the eddy current effect and the skin effect of the cathode layer 308 is reduced, and the normal work of the antenna structure and the display panel is guaranteed.
It should be noted that the light emitting device film layers in the embodiments of the present application include a pixel defining structure 301, a support layer 302, an anode layer 303, a hole transport layer 304, a light emitting layer 305, an electron transport layer 306, an electron blocking layer 307, and a cathode layer 308.
Optionally, since the wave-absorbing structure 404 has conductivity, in order to avoid electrical connection between the wave-absorbing structure 404 and the cathode layer 308, in this embodiment of the application, the wave-absorbing structure 404 is disposed on a side of the first inorganic packaging layer 401 of the packaging structure, which is far away from the cathode layer 308, and insulation between the wave-absorbing structure 404 and the cathode layer 308 is realized through the first inorganic packaging layer 401. Of course, the wave-absorbing structure 404 may also be disposed on a side of the first organic encapsulation layer 402 away from the cathode layer 308 or a side of the second organic encapsulation layer 403 away from the cathode layer 308, and a person skilled in the art may set a specific film position of the wave-absorbing structure 404 according to a specific manufacturing process and actual requirements.
In an embodiment of the present application, a first projection area of the first electrode 508 on the substrate base plate 10 overlaps with a second projection area of the second electrode 502 on the substrate base plate 10, and a third projection area of the wave-absorbing structure 404 on the substrate base plate 10 covers the first projection area and the second projection area. It should be noted that, in the embodiment of the present application, the first projection area, the second projection area, and the third projection area are all orthogonal projections of the corresponding film layer structures on the substrate base plate 10.
In the embodiment of the present application, in order to guarantee the working performance of the antenna structure, a first projection area of the first electrode 508 on the substrate 10 overlaps a second projection area of the second electrode 502 on the substrate 10, that is, in a direction perpendicular to the substrate 10, the first electrode 508 is opposite to the second electrode 502. Meanwhile, the third projection area of the wave-absorbing structure 404 on the substrate base plate 10 covers the first projection area and the second projection area, that is, in the direction perpendicular to the substrate base plate 10, the wave-absorbing structure 404 completely covers the first electrode 508 and the second electrode 502 to ensure that the electromagnetic wave of the antenna structure is conducted inside the wave-absorbing structure 404 to form a loop, so that the amount of electromagnetic waves entering the cathode layer 308 is reduced, the electromagnetic shielding of the cathode layer 308 on the antenna structure is weakened, the temperature rise degree of the cathode layer 308 caused by the eddy effect and the skin effect of the cathode layer 308 is reduced, and the normal operation of the antenna structure and the display panel is further ensured.
In one embodiment of the present application, a boundary line of the third projection region overlaps with a boundary line of a light exit region located in the display panel.
In this embodiment, in order to avoid the influence of the antenna structure and the wave-absorbing structure 404 on the display effect of the display panel, the antenna structure and the wave-absorbing structure 404 should avoid shielding the light emitting area located in the display area 100, and therefore, the boundary line of the third projection area overlaps with the boundary line of the light emitting area located in the display panel, so as to avoid shielding the light emitting area of the display area 100 by the wave-absorbing structure 404. Specifically, as shown in fig. 2, in the embodiment of the application, in a direction perpendicular to the substrate 10, the wave-absorbing structure 404 corresponds to the pixel defining structures 301 and the supporting layer 302, so as to avoid shielding the light exiting region between two adjacent pixel defining structures 301.
In one embodiment of the present application, the wave-absorbing structure 404 includes a substrate layer and a wave-absorbing material dispersed in the substrate layer; the wave-absorbing material comprises a ferrite material, a metal material, an alloy material and an amorphous material, and the base material layer is made of a high polymer material.
In the embodiment of the application, the wave-absorbing structure 404 is located on the side of the first inorganic encapsulation layer 401 of the encapsulation structure, which is far away from the cathode layer 308, and the preparation of the wave-absorbing structure 404 can be completed by a coating, printing or printing process method, so that the preparation of the wave-absorbing structure 404 can be completed while the encapsulation structure is prepared, which simplifies the production process of the display panel and is beneficial to improving the production efficiency of the display panel.
In this embodiment of the application, the wave-absorbing structure 404 includes a substrate layer and a wave-absorbing material, and the wave-absorbing material is uniformly dispersed in the substrate layer, so that the wave-absorbing material reduces the electromagnetic waves of the antenna structure from entering the cathode layer 308. Meanwhile, the wave-absorbing material has high magnetic permeability and low magnetic loss, so that an electromagnetic wave break can be conducted inside the wave-absorbing structure 404 to form a loop, the quantity of electromagnetic waves entering the cathode layer 308 is reduced, the electromagnetic shielding of the cathode layer 308 on the antenna structure is weakened, the temperature rise degree of the cathode layer 308 due to the eddy current effect and the skin effect of the cathode layer 308 is reduced, and the normal work of the antenna structure and the display panel is guaranteed. Meanwhile, by controlling the dispersion degree of the wave-absorbing material in the substrate layer and the content of the wave-absorbing material, the influence of the wave-absorbing structure 404 on the working performance of the antenna structure can be controlled, so that the working requirements of different antenna structures can be met.
In the embodiment of the application, the wave-absorbing material comprises a ferrite material, a metal material, an alloy material and an amorphous material, and the base material layer is made of a high polymer material.
In one embodiment of the present application, the wave-absorbing material is made of the same material as the black matrix layer in the display panel.
In the existing manufacturing process of the display panel, the carbon black has the characteristics of good light absorption rate, good thermal stability and low cost, and the manufacturing material of the black matrix layer in the display panel contains the carbon black. Because the 5G frequency is 10-20Ghz, the carbon black can effectively absorb the electromagnetic waves in the frequency band, and meanwhile, the carbon black has the characteristics of high magnetic conductivity and low magnetic loss, the skin effect and the magnetic loss of the electromagnetic waves at the cathode layer 308 can be effectively avoided, so that the carbon black meets the requirements of being used as a wave-absorbing material.
Therefore, in the embodiment of the application, the wave-absorbing material is made of the same carbon black as the black matrix layer, which not only can greatly reduce the manufacturing cost of the wave-absorbing structure 404, but also can simplify the production process of the display panel, thereby being beneficial to improving the production efficiency of the display panel.
Meanwhile, the manufacturing material of the substrate layer of the wave-absorbing structure 404 can also adopt a light-cured resin material which is widely applied in the manufacturing process of the existing display panel, so that the manufacturing cost of the wave-absorbing structure 404 can be further reduced.
In one embodiment of the present application, the wave-absorbing material includes carbon black and carbonyl iron, and the base material layer is made of resin.
In the embodiment of the application, in order to ensure the performance of the wave-absorbing structure 404, the wave-absorbing material of the wave-absorbing structure 404 includes carbon black and carbonyl iron, and the carbon black and the carbonyl iron are uniformly dispersed in the base material layer made of the resin material. The combination of the carbon black and the carbonyl iron can further enhance the ability of the wave-absorbing structure 404 to prevent electromagnetic waves from entering the cathode layer 308, effectively avoid the electromagnetic waves from generating an eddy effect and a skin effect at the cathode layer 308, and avoid the temperature rise of the cathode layer 308, thereby ensuring the normal operation of the antenna structure and the display panel.
Based on the same inventive concept, embodiments of the present application provide a display device, as shown in fig. 4, a schematic diagram of a connection structure of a circuit board and a driving circuit in the display device. The display device includes: the circuit board 60, the driving circuit 70, and the display panel provided in the above embodiments;
the first feed line 509 of the antenna structure in the display panel is electrically connected to the second feed line 601 of the circuit board 60, and the driving circuit 70 is attached to the circuit board 60 and electrically connected to the circuit board 60.
In the embodiment of the present application, the first feeding line 509 of the antenna structure is electrically connected to the second feeding line 601 of the circuit board 60, so as to implement power supply and signal transmission. A plurality of second feed lines 601 are included in the circuit board 60, and the remaining second feed lines 601 are indicated by ellipses in fig. 4.
It should be noted that, in order to clearly show the display panel and the display device provided in the embodiments of the present application, different structures are represented by different textures in fig. 1 to 4, so as to clearly distinguish the different structures.
By applying the embodiment of the application, at least the following beneficial effects can be realized:
1. in the display panel provided in the embodiment of the application, the second electrode 502 of the antenna structure and the transmitting electrode 501 of the touch structure are located on the same film layer, so that compared with a case where the antenna structure is separately arranged, the film layer structure of the display panel is simplified, the thickness of the display panel can be effectively reduced, and the display panel is favorable for development of lightness and thinness. Meanwhile, the production process of the display panel is simplified, and the production efficiency of the display panel is improved.
2. In this embodiment, a wave-absorbing structure 404 is disposed on one side of the cathode layer 308, which is located in the film layer of the light-emitting device and is close to the antenna structure, and the wave-absorbing structure 404 is used to reduce electromagnetic waves of the antenna structure from entering the cathode layer 308. The wave-absorbing structure 404 has high magnetic permeability and low magnetic loss, so that an electromagnetic wave can be conducted inside the wave-absorbing structure 404 to form a loop, the quantity of electromagnetic waves entering the cathode layer 308 is reduced, the electromagnetic shielding of the cathode layer 308 on the antenna structure is weakened, the temperature rise degree of the cathode layer 308 caused by the eddy current effect and the skin effect of the cathode layer 308 is reduced, and the normal work of the antenna structure and the display panel is guaranteed.
3. In the embodiment of the application, a first projection area of the first electrode 508 on the substrate base plate 10 overlaps with a second projection area of the second electrode 502 on the substrate base plate 10, and a third projection area of the wave-absorbing structure 404 on the substrate base plate 10 covers the first projection area and the second projection area, that is, in a direction perpendicular to the substrate base plate 10, the wave-absorbing structure 404 completely covers the first electrode 508 and the second electrode 502, so as to ensure that an electromagnetic wave of the antenna structure is conducted inside the wave-absorbing structure 404 to form a loop, reduce the amount of electromagnetic waves entering the cathode layer 308, and further ensure the normal operation of the antenna structure and the display panel. Meanwhile, the boundary line of the third projection region overlaps with the boundary line of the light emergent region in the display panel, so that the wave-absorbing structure 404 can avoid shielding the light emergent region between two adjacent pixel defining structures 301, and the display effect of the display panel can be guaranteed.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
Claims (8)
1. A display panel including a display area and a non-display area surrounding the display area, the display panel comprising:
the touch structure comprises a receiving electrode and a sending electrode which are positioned on different film layers;
an antenna structure comprising a first electrode, a first feed line and a second electrode; the first electrode and the second electrode are positioned in the display area, and the first feeder line extends from the display area to the non-display area; the first electrode is electrically connected with the first feeder line, and the first electrode is positioned on one side of the receiving electrode, which is far away from the sending electrode; the second electrode and the transmitting electrode are arranged on the same layer; a dielectric layer is arranged between the first electrode and the second electrode, and the dielectric layer comprises at least one organic film layer and at least one inorganic film layer;
and the wave-absorbing structure is positioned on one side of the pixel definition structure of the light-emitting device film layer, which is far away from the substrate base plate, in the direction vertical to the substrate base plate.
2. The display panel of claim 1, wherein the absorbing structure is a cathode layer in the light emitting device film layer on a side of the antenna structure.
3. The display panel according to claim 2, wherein a first projection area of the first electrode on the substrate base plate overlaps with a second projection area of the second electrode on the substrate base plate, and a third projection area of the wave-absorbing structure on the substrate base plate covers the first projection area and the second projection area.
4. A display panel as claimed in claim 3 characterized in that the borderline of the third projection area overlaps with a borderline of a light exit area in the display panel.
5. The display panel of claim 2, wherein the absorbing structure comprises a substrate layer and absorbing material dispersed in the substrate layer;
the wave-absorbing material comprises a ferrite material, a metal material, an alloy material and an amorphous material, and the base material layer is made of a high polymer material.
6. The display panel of claim 5 wherein the absorbing material is the same as the black matrix layer of the display panel.
7. The display panel of claim 5, wherein the absorbing material comprises carbon black and carbonyl iron, and the substrate layer is made of resin.
8. A display device comprising a circuit board, a driving circuit, and the display panel according to any one of claims 1 to 7;
the first feeder of the antenna structure in the display panel is electrically connected with the second feeder of the circuit board, and the driving circuit is attached to the circuit board and electrically connected with the circuit board.
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| CN113078143A (en) * | 2021-03-25 | 2021-07-06 | 维沃移动通信有限公司 | Display device, driving control method and device thereof, and electronic device |
| CN113342199B (en) * | 2021-05-08 | 2023-06-02 | 牧东光电科技有限公司 | Touch display screen integrated with antenna and preparation method thereof |
| US20240155900A1 (en) * | 2021-11-25 | 2024-05-09 | Beijing Boe Technology Development Co., Ltd. | Display substrate, manufacturing method and display device |
| WO2023225984A1 (en) * | 2022-05-27 | 2023-11-30 | 京东方科技集团股份有限公司 | Array substrate, display panel and method for manufacturing array substrate |
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| KR101015347B1 (en) * | 2009-02-16 | 2011-02-16 | 삼성모바일디스플레이주식회사 | Organic Light emitting Display device equipped with RFID |
| CN108733196B (en) * | 2017-04-13 | 2020-05-15 | 京东方科技集团股份有限公司 | Display substrate, display device and operation method thereof |
| CN109159506B (en) * | 2018-07-27 | 2020-11-24 | 中国人民解放军陆军装甲兵学院 | Flexible UHF RFID anti-metal label |
| CN111148423A (en) * | 2018-11-05 | 2020-05-12 | 苏州大学 | Shielding film and manufacturing method thereof |
| CN110633031B (en) * | 2019-08-08 | 2023-06-20 | 昆山龙腾光电股份有限公司 | Touch screen integrated with NFC antenna and display device |
| CN111427208B (en) * | 2020-03-31 | 2022-06-17 | 厦门天马微电子有限公司 | Array substrate, display panel and display device |
| CN111525232A (en) * | 2020-04-15 | 2020-08-11 | 厦门天马微电子有限公司 | Display panel and display device |
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