CN111509018B - display device - Google Patents
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- CN111509018B CN111509018B CN202010352141.5A CN202010352141A CN111509018B CN 111509018 B CN111509018 B CN 111509018B CN 202010352141 A CN202010352141 A CN 202010352141A CN 111509018 B CN111509018 B CN 111509018B
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- display panel
- display device
- antenna
- radiation
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Classifications
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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
- H10K59/10—OLED displays
-
- 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
-
- 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
-
- 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
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/81—Anodes
- H10K50/813—Anodes characterised by their shape
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/82—Cathodes
- H10K50/822—Cathodes characterised by their shape
-
- 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 invention provides a display device, belongs to the technical field of display, and can solve the problem that when an existing antenna is integrated with a display panel, an entire metal cathode film layer blocks oscillation of electromagnetic waves in a medium. The display device of the present invention includes: a first display panel and an antenna; the antenna comprises: a radiation layer; the radiation layer is positioned on the first display panel; the cathode and anode of the display device in the first display panel include stripe-shaped electrodes disposed to cross.
Description
Technical Field
The invention belongs to the technical field of display, and particularly relates to a display device.
Background
The antenna of a mobile display device is typically mounted to the back, bezel, and side areas of the display device. However, with the development of display devices, many problems have arisen, and a solution is needed.
The mobile display device is developed towards a narrow frame and a full screen, and the space of the frame of the mobile display device for installing an antenna is smaller and smaller; the mobile display device develops towards the curved screen, so that the placement of the antenna in the side area is limited; the advent of folding and curling display devices made it difficult for antennas mounted on the back of the display device to radiate signals. The antenna is generally directly integrated with an active-matrix organic light emitting diode (AMOLED) display panel to solve the above-mentioned antenna placement problem.
The inventor finds that at least the following problems exist in the prior art: the radiation layer of antenna is set up on the encapsulation rete of display panel, and when AMOLED display panel was as the dielectric layer of antenna, can be hindered the vibration of electromagnetic wave in the medium by whole metal cathode rete, and the existence of cathode rete as the impedance layer can't realize the transmission of signal, influences the transmission or the receiving performance of antenna.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art and provides a display device.
The technical scheme adopted for solving the technical problem of the invention is a display device, comprising: a first display panel and an antenna;
the antenna includes: a radiation layer; the radiation layer is positioned on the first display panel; the cathode and the anode of the display device in the first display panel comprise strip-shaped electrodes which are arranged in a crossing manner.
Optionally, the antenna further comprises: a first ground layer;
the first grounding layer and the radiation layer are arranged on the same layer.
Optionally, the antenna further comprises: a second ground layer;
the second grounding layer is positioned on one side of the first display panel away from the radiation layer; the second ground layer is electrically connected with the first ground layer.
Optionally, the antenna further comprises: a feeder line;
the feeder is electrically connected with the radiation layer and is arranged on the same layer as the radiation layer.
Optionally, the radiation layer and the feeder each include: grid electrodes or planar electrodes.
Optionally, the materials of the radiation layer and the feeder line each include: metal, metal oxide or graphene.
Optionally, the antenna further comprises: an additional dielectric layer;
the additional dielectric layer is positioned on one side of the first display panel away from the radiation layer.
Optionally, the material of the additional dielectric layer includes: liquid crystalline polymers or polytetrafluoroethylene.
Optionally, the antenna further comprises: a multilayer connection layer and a protective layer arranged in a layer or a stack;
the connecting layer is positioned on one side of the radiation layer close to the first display panel;
the protective layer is positioned on one side of the radiation layer away from the first display panel.
Optionally, the display device further includes: a second display panel;
the second display panel and the first display panel are spliced and arranged on the same layer.
Drawings
Fig. 1 is a schematic plan view of a display device according to an embodiment of the present invention;
fig. 2 is a schematic plan view of an antenna in a display device according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a display device according to an embodiment of the present invention;
fig. 4a, fig. 4b, and fig. 4c are schematic plan view structures of an antenna in a display device according to an embodiment of the invention.
Detailed Description
The present invention will be described in further detail below with reference to the drawings and detailed description for the purpose of better understanding of the technical solution of the present invention to those skilled in the art.
Example 1
Fig. 1 is a schematic plan view of a display device according to an embodiment of the present invention, as shown in fig. 1, the display device includes: a first display panel 101 and an antenna; the antenna comprises: a radiation layer 102; the radiation layer 102 is positioned on the first display panel 101; the cathode and anode electrodes of the display device in the first display panel 101 include stripe-shaped electrodes disposed to cross.
In the display device provided by the embodiment of the invention, the cathode and the anode of the display device in the first display panel 101 include stripe electrodes which are arranged in a crossing manner, specifically, the first display panel 101 may be a Passive Matrix Organic Light Emitting Diode (PMOLED) display panel, and the radiation layer 102 of the antenna may be located on the PMOLED display panel, so that the PMOLED display panel may be used as a dielectric layer of the antenna, thereby realizing integration of the antenna and the display panel. The cathodes and the anodes of the display devices in the PMOLED display panel are strip electrodes which are arranged in a crossing way, other film layers such as a luminescent layer are arranged between the cathodes and the anodes, pixel units can be formed at the crossing points of the cathodes and the anodes, and when voltage signals are applied between the cathodes and the anodes, the luminescent layer can emit light so as to realize the display function. Furthermore, since the cathode and the anode are both strip electrodes, certain gaps are formed between the adjacent electrodes, and no shielding effect is formed on electromagnetic waves, electromagnetic waves emitted or received by the radiation layer 102 of the antenna can be effectively transmitted in a dielectric layer formed by the PMOLED display panel, and the electromagnetic waves emitted or received by the radiation layer 102 are prevented from oscillating in the dielectric due to the shielding effect of the whole electrode, so that the emission or receiving performance of the antenna can be improved, and the integration degree of the antenna and the display panel in the display device can be improved.
In some embodiments, the PMOLED display panel may be located in a top status bar area of a display device where the display area is small, or may be located in a bottom main menu control bar area. In practical applications, the width h of the PMOLED display panel may be 3 mm to 10 mm, and preferably may be 5 mm. If the width h of the PMOLED display panel is less than 3 mm, the design requirement of the antenna cannot be satisfied, and if the width h of the PMOLED display panel is more than 10 mm, the display effect of the entire display device may be affected. The length l of the PMOLED display panel is not higher than the width of the whole display area.
Fig. 2 is a schematic plan view of an antenna in a display device according to an embodiment of the present invention, where, as shown in fig. 2, the antenna further includes: a first ground layer 103; the first ground layer 103 is arranged in the same layer as the radiation layer 102.
It should be noted that, in the display device provided in the embodiment of the present invention, the antenna may be a coplanar waveguide (coplanar waveguide, CPW) antenna, and in this case, the first ground layer 103 may be disposed on the same layer as the radiation layer 102. The electromagnetic wave may oscillate in the medium between the radiation layer 102 and the first ground layer 103 to transmit electromagnetic signals carried in the electromagnetic wave. Furthermore, since the first ground layer 103 and the radiation layer 102 are arranged in the same layer, the thickness of the display device can be reduced, and meanwhile, the whole ground layer is not required to be additionally arranged, so that the preparation process is simple, and the preparation cost can be saved.
Fig. 3 is a schematic cross-sectional structure of a display device according to an embodiment of the present invention, where, as shown in fig. 3, the antenna further includes: a second ground layer 104; the second ground layer 104 is located at a side of the first display panel 101 away from the radiation layer 102; the second ground layer 104 is electrically connected to the first ground layer 103.
It should be noted that, the antenna in the display device provided by the embodiment of the invention may be a grounded coplanar waveguide (grounded coplanar waveguide, GCPW) antenna. The second ground layer 104 and the radiation layer 102 are located in different film layers on two sides of a dielectric layer formed by the PMOLED display panel, and the second ground layer 104 may be electrically connected to the first ground layer 103 through a via hole penetrating through the PMOLED display panel. This increases the area of the ground plane in the antenna, so that the area of the second ground plane 104 may be large enough to facilitate transmission of electromagnetic waves. It can be understood that the antenna in the display device provided by the embodiment of the present invention is not limited to the microstrip patch antenna with the two structures, and may also include antennas with other structures, and the implementation principle of the antenna with the two structures is similar to that of the antenna with the two structures, which is not listed here.
As shown in fig. 2, the antenna further includes: a feeder line 105; the feeder line 105 is electrically connected to the radiation layer 102 and is provided in the same layer as the radiation layer 102.
The electromagnetic wave generated by the driving circuit inside the display device may be transmitted to the radiation layer 102 through the power supply line 105, and then emitted to the external space by the radiation layer 102, or the electromagnetic wave in the external space may be received by the radiation layer 102 and then transmitted to the driving circuit inside the display device through the power supply line 105. In practical application, the feeder line 105 and the radiation layer 102 can be arranged in the same layer and can be in an integrally formed structure, and in the preparation process, the feeder line 105 and the radiation layer can be made of the same material and can be formed by adopting a one-time patterning process, so that the preparation steps are reduced, and the preparation cost is saved.
In some embodiments, as shown in fig. 4a, 4b, and 4c, the radiation layer 102 and the power feed line 105 each include: grid electrodes or planar electrodes.
It should be noted that, in order to avoid the shielding of the light by the radiation layer 102 and the power supply line 105 on the PMOLED display panel, the radiation layer 102 and the power supply line 105 may be subjected to patterning treatment, for example, the radiation layer 102 and the power supply line 105 may be made of grid-shaped electrodes as shown in fig. 4a and 4b, so that the light may be exposed through the gaps in the grid electrodes while ensuring signal transmission, thereby ensuring good display effect of the PMOLED. The transparency of the antenna and the performance of the antenna can be adjusted by adjusting the aperture and the size of the grid electrode. Alternatively, the radiation layer 102 and the power supply line 105 may be made of transparent planar electrodes as shown in fig. 4c, so that not only good light transmittance performance can be ensured, but also difficulty in manufacturing the radiation layer 102 and the power supply line 105 can be reduced, so as to save manufacturing cost. It is understood that the radiation layer 102 and the power supply line 105 may have other shapes, and the implementation principle is similar, and will not be described herein.
In some embodiments, the materials of the radiation layer 102 and the feed line 105 each include: metal, metal oxide or graphene.
The radiation layer 102 and the power feed line 105 of the antenna may be made of a material that is easy to manufacture and has stable radiation performance. For example, the radiation layer 102 and the power supply line 105 may be made of a metal material such as copper aluminum, a transparent metal oxide such as indium tin oxide, or a material such as graphene. In order to avoid shielding of the light emitted from the PMOLED display panel by the radiation layer 102 and the power supply line 105 of the antenna and to save manufacturing costs, the radiation layer 102 and the power supply line 105 may preferably be made of a transparent metal oxide as in the prior art.
As shown in fig. 3, the antenna further includes: an additional dielectric layer 106; the additional dielectric layer 106 is located on the side of the first display panel 101 remote from the radiation layer 102.
It should be noted that, the additional dielectric layer 106 may be made of a material having a low dielectric constant and low dielectric loss. In practical applications, the additional dielectric layer 106 may be located on a side of the PMOLED display panel away from the radiation layer 102, and parameters such as thickness and dielectric constant of the overall equivalent dielectric layer formed by the PMOLED display panel and the additional dielectric layer 106 may be adjusted by adjusting the thickness of the additional dielectric layer 106. In this way, an optimisation of the antenna frequency modulation and the antenna performance can be achieved. In particular, the additional dielectric layer 106 may be made of liquid crystal polymer (liquid crystal polymer, LCP) or polytetrafluoroethylene (poly tetra fluoroethylene, PTFE).
As shown in fig. 3, the antenna further includes: a multilayer connection layer 107 and a protective layer 108 arranged in one layer or a stack; the connection layer 107 is located at a side of the radiation layer 102 near the first display panel 101; the protective layer 108 is located on a side of the radiation layer 102 remote from the first display panel 101.
It should be noted that, the connection layer 107 may be a single layer structure or stacked in multiple layers, and before the radiation layer 107 is prepared, the surface of the PMOLED display panel may be planarized by using the connection layer 107, so as to facilitate the adhesion between the PMOLED display panel and the radiation layer 102. In practical applications, the connection layer 107 may be made of a transparent material that facilitates deformation, and in particular, the connection layer 107 may be made of a resin material. The protective layer 108 may entirely cover the radiation layer 102 of the antenna, and may expose a portion of the power supply line 105 to be connected with a driving circuit inside the display device, thereby protecting the radiation layer 102 of the antenna from corrosion and damage of the radiation layer 102. The protective layer 108 may be made of an organic insulating material or an inorganic insulating material, which is not shown here.
As shown in fig. 1, the display device further includes a second display panel 109; the second display panel 109 is disposed in the same layer as the first display panel 101.
It should be noted that, the first display panel 101 may be a PMOLED display panel, where the PMOLED display panel is difficult to realize a large-sized display device, and affects the display effect of the large-sized display device, so the display device provided in the embodiment of the invention may be formed by splicing the first display panel 101 and the second display panel 109, that is, by splicing the PMOLED display panel and the AMOLED display panel, so that the good display effect of the display device is ensured, and meanwhile, the influence of the shielding effect of the metal cathode on the whole surface in the AMOLED display panel on the electromagnetic wave on the performance of the antenna is avoided, thereby improving the integration level of the antenna and the display panel in the display device. It can be understood that the PMOLED display panel and the AMOLED display panel may be arranged in a vertically spliced manner, and may also be arranged in a horizontally spliced manner. The area of the AMOLED display panel is much larger than that of the PMOLED display panel, so that good display effect is ensured. The PMOLED display panel and the AMOLED display panel can share the same substrate and the same luminescent layer, so that seamless splicing of the PMOLED display panel and the AMOLED display panel in a display area is realized, and therefore, obvious boundaries at the junction of the PMOLED display panel and the AMOLED display panel can be avoided during display, and visual effect can be improved. It can be understood that the PMOLED display panel and the AMOLED display panel can also be provided with a certain overlap at the junction, the edge of the AMOLED display panel can be shielded by using the PMOLED display panel, and a certain edge transition area is provided at the edge of the AMOLED display panel, so as to avoid gaps between the two display panels, thereby avoiding the defects of obvious boundary or black edge at the junction of the two display panels.
It should be further noted that the PMOLED display panel and the AMOLED display panel may have the same pixel structure and pixel density. Therefore, the PMOLED display panel and the AMOLED display panel can display images with good display effects, so that uniformity of the displayed images in the whole display device is ensured.
It can be understood that the display device provided by the embodiment of the invention can be a terminal device such as a smart phone, a tablet personal computer or a navigator, and further, the display device provided by the embodiment of the invention can be a terminal device with full screen display.
In summary, in the display device provided by the embodiment of the invention, the antenna is integrated with the PMOLED display panel, and since the cathode and the anode of the display device in the PMOLED display panel are stripe electrodes which are arranged in a crossing manner, a certain gap is formed between adjacent electrodes, and no shielding effect is formed on electromagnetic waves, electromagnetic waves emitted or received by the radiation layer 102 of the antenna can be effectively transmitted in a dielectric layer formed by the PMOLED display panel, and oscillation of electromagnetic waves emitted or received by the radiation layer 102 in the dielectric layer is prevented from being blocked due to the shielding effect of the whole electrode, so that the emission or receiving performance of the antenna can be improved, and the integration degree of the antenna and the display panel in the display device can be improved. Further, the antenna in the display device can be guaranteed to have good performance in a mode of splicing the PMOLED display panel and the AMOLED display panel, and meanwhile, uniformity of displayed images in the whole display device is guaranteed, so that the display device is guaranteed to have good display effect, and user experience is improved.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
Claims (10)
1. A display device, comprising: a first display panel and an antenna;
the antenna includes: a radiation layer and a dielectric layer; the radiation layer is positioned on the first display panel; the first display panel is used as the dielectric layer; the cathode and the anode of the display device in the first display panel comprise strip-shaped electrodes which are arranged in a crossing manner.
2. The display device according to claim 1, wherein the antenna further comprises: a first ground layer;
the first grounding layer and the radiation layer are arranged on the same layer.
3. The display device according to claim 2, wherein the antenna further comprises: a second ground layer;
the second grounding layer is positioned on one side of the first display panel away from the radiation layer; the second ground layer is electrically connected with the first ground layer.
4. The display device according to claim 1, wherein the antenna further comprises: a feeder line;
the feeder is electrically connected with the radiation layer and is arranged on the same layer as the radiation layer.
5. The display device according to claim 4, wherein the radiation layer and the power supply line each include: grid electrodes or planar electrodes.
6. The display device according to claim 4, wherein materials of the radiation layer and the power supply line each include: metal, metal oxide or graphene.
7. The display device according to claim 1, wherein the antenna further comprises: an additional dielectric layer;
the additional dielectric layer is positioned on one side of the first display panel away from the radiation layer.
8. The display device of claim 7, wherein the material of the additional dielectric layer comprises: liquid crystalline polymers or polytetrafluoroethylene.
9. The display device according to claim 1, wherein the antenna further comprises: a multilayer connection layer and a protective layer arranged in a layer or a stack;
the connecting layer is positioned on one side of the radiation layer close to the first display panel;
the protective layer is positioned on one side of the radiation layer away from the first display panel.
10. The display device according to claim 1, characterized in that the display device further comprises: a second display panel;
the second display panel and the first display panel are spliced and arranged on the same layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010352141.5A CN111509018B (en) | 2020-04-28 | 2020-04-28 | display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010352141.5A CN111509018B (en) | 2020-04-28 | 2020-04-28 | display device |
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| Publication Number | Publication Date |
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| CN111509018A CN111509018A (en) | 2020-08-07 |
| CN111509018B true CN111509018B (en) | 2023-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010352141.5A Active CN111509018B (en) | 2020-04-28 | 2020-04-28 | display device |
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| CN (1) | CN111509018B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112448159B (en) * | 2020-11-23 | 2023-08-11 | 京东方科技集团股份有限公司 | Display module, display device and manufacturing method |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111509018A (en) | 2020-08-07 |
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