CN112331708B - Display panel - Google Patents
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- CN112331708B CN112331708B CN202011192854.6A CN202011192854A CN112331708B CN 112331708 B CN112331708 B CN 112331708B CN 202011192854 A CN202011192854 A CN 202011192854A CN 112331708 B CN112331708 B CN 112331708B
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 239000004332 silver Substances 0.000 claims description 5
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 claims description 5
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
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- JAONJTDQXUSBGG-UHFFFAOYSA-N dialuminum;dizinc;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Al+3].[Zn+2].[Zn+2] JAONJTDQXUSBGG-UHFFFAOYSA-N 0.000 description 2
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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
- H10K59/12—Active-matrix OLED [AMOLED] displays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1255—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs integrated with passive devices, e.g. auxiliary capacitors
-
- 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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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The embodiment of the invention discloses a display panel, which comprises a thin film transistor array layer, a light-emitting device layer and at least one antenna electrode, wherein the orthographic projection of a non-light-emitting area on the thin film transistor array layer is arranged to cover the orthographic projection of the antenna electrode on the thin film transistor array layer, so that the space for arranging the antenna electrode is correspondingly larger. And the antenna electrode is arranged between the adjacent light-emitting devices, so that the effect of the light-emitting devices is not influenced, and the normal display of the display panel is ensured.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel.
Background
With the development of display technology, the number of types of antennas provided in a display device is increasing.
In the existing display device, the position space of the antenna arrangement is small, and the communication function of the antenna is influenced.
Disclosure of Invention
The invention provides a display panel, which is used for increasing the space for arranging an antenna so as to ensure the normal communication function of the antenna.
An embodiment of the present invention provides a display panel, including a display area, the display area including a light emitting area and a non-light emitting area adjacent to the light emitting area, the display panel including:
a thin film transistor array layer including a plurality of thin film transistors;
the light-emitting device layer comprises a plurality of light-emitting devices, each light-emitting device corresponds to a light-emitting area, and each light-emitting device comprises a first electrode, a light-emitting layer and a second electrode which are stacked in a direction from one side of the thin film transistor array layer to a direction far away from the thin film transistor array layer;
and the orthographic projection of the non-luminous area on the thin film transistor array layer covers the orthographic projection of the antenna electrode on the thin film transistor array layer.
Optionally, the display panel further includes a pixel defining layer, the pixel defining layer is located on one side of the thin film transistor array layer, the pixel defining layer includes a plurality of first openings and a body portion located between the first openings, and the antenna electrode is disposed on the body portion.
Optionally, the surface of the body portion away from the thin film transistor array layer includes grooves corresponding to the antenna electrodes one to one, and the antenna electrodes are disposed in the corresponding grooves;
or the pixel limiting layer comprises second openings corresponding to the antenna electrodes one by one, and the antenna electrodes are arranged in the corresponding second openings; preferably, the material of the antenna electrode is the same as the material of the first electrode.
Optionally, the display panel further includes a supporting pillar, the supporting pillar is located on a side of the pixel defining layer away from the thin film transistor array layer; the supporting column comprises a bottom structure covering the antenna electrode and a top structure protruding out of the bottom structure, and the size of the top structure is smaller than that of the bottom structure in the connection line direction of adjacent light-emitting devices.
Optionally, the display panel further includes a supporting pillar, the supporting pillar is located on a side of the pixel defining layer away from the thin film transistor array layer; the surface of the support column, which is far away from the thin film transistor array layer, comprises grooves which correspond to the antenna electrodes one by one, and the antenna electrodes are arranged in the corresponding grooves;
or the supporting column comprises third openings corresponding to the antenna electrodes one by one, and the antenna electrodes are arranged in the corresponding third openings.
Optionally, the display panel further includes a supporting pillar, where the supporting pillar is located on a side of the body portion away from the thin film transistor array layer; the support column is used as an antenna electrode, and the support column is made of at least one of silver, aluminum, copper, molybdenum, titanium, indium tin oxide, zinc oxide and indium zinc oxide.
Optionally, the antenna electrode and the first electrode are disposed in the same layer, and are located between at least part of the first electrodes;
or the antenna electrode is positioned on one side of the second electrode far away from the thin film transistor array layer;
or, the thin film transistor array layer comprises an array circuit layer and a planarization layer on one side of the array circuit layer close to the light-emitting device layer, and the antenna electrode is arranged on the planarization layer.
Optionally, the antenna electrodes are strip-shaped, and each antenna electrode extends along a row direction or a column direction of the light emitting device;
or the antenna electrode is in a grid shape, and the orthographic projection of the antenna electrode on the thin film transistor array layer surrounds the orthographic projection of the light-emitting device on the thin film transistor array layer; preferably, the antenna electrode spans at least one row of light emitting devices or at least one column of light emitting devices;
the row direction of the light emitting devices intersects the column direction of the light emitting devices.
Optionally, the second electrode includes an electrode portion and a hollow portion, an orthographic projection of the electrode portion on the thin film transistor array layer at least covers an orthographic projection of the light emitting layer on the thin film transistor array layer, and an orthographic projection of the hollow portion on the thin film transistor array layer overlaps with an orthographic projection of at least part of the antenna electrode on the thin film transistor array layer.
Optionally, the display panel further includes a non-display area;
the display panel also comprises an antenna electrode lead, at least part of the antenna electrode lead is arranged in the non-display area, and the antenna electrode is arranged in the display area; each antenna electrode is correspondingly connected with two antenna electrode leads respectively, and the antenna electrode leads connected with different antenna electrodes are different;
preferably, the antenna electrode lead is disposed in the same layer as the antenna electrode.
The embodiment of the invention provides a display panel, which comprises a thin film transistor array layer, a light-emitting device layer and at least one antenna electrode, wherein the orthographic projection of a non-light-emitting area on the thin film transistor array layer is set to cover the orthographic projection of the antenna electrode on the thin film transistor array layer, so that the space for arranging the antenna electrode is correspondingly larger. And the orthographic projection of the non-luminous area on the thin film transistor array layer covers the orthographic projection of the antenna electrode on the thin film transistor array layer, so that the effect of the antenna electrode on the luminous device is not influenced, and the normal display of the display panel is ensured.
Drawings
Fig. 1 is a top view of a display panel according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a display panel according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of another display panel provided in an embodiment of the present invention;
fig. 4 is a cross-sectional view of another display panel provided in an embodiment of the present invention;
fig. 5 is a cross-sectional view of another display panel provided in an embodiment of the present invention;
fig. 6 is a cross-sectional view of another display panel provided in an embodiment of the present invention;
fig. 7 is a cross-sectional view of another display panel provided in an embodiment of the present invention;
fig. 8 is a cross-sectional view of another display panel provided in an embodiment of the present invention;
fig. 9 is a cross-sectional view of another display panel provided in an embodiment of the present invention;
FIG. 10 is a top view of another display panel provided in accordance with an embodiment of the present invention;
FIG. 11 is a top view of another display panel provided in accordance with an embodiment of the present invention;
FIG. 12 is a top view of another display panel provided in accordance with an embodiment of the present invention;
fig. 13 is a cross-sectional view of another display panel provided in an embodiment of the invention;
fig. 14 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings, not all of them.
As described in the background art, in the conventional display device, there is a problem that the antenna position layout is not reasonable, so that the antenna arrangement position space is small, and the communication function of the antenna is affected. The inventor researches and finds that the above problems occur because in the existing display device, the antenna is usually not only arranged at the inner side of the back cover plate of the display device, near the battery or only arranged at the non-display area of the display panel, the antenna usually comprises an antenna electrode and an antenna lead, and the antenna is arranged at the inner side of the back cover plate and near the battery, so that the arrangement space is reduced, and the wiring is easy to wear; the area of the non-display area of the display panel is small, and a plurality of signal lines for display driving are already arranged in the non-display area, so that the antenna is only arranged in the non-display area of the display panel, the arrangement space of the antenna is more limited, and the normal communication function of the antenna is influenced.
Fig. 1 is a top view of a display panel according to an embodiment of the present invention, fig. 2 is a cross-sectional view of the display panel according to the embodiment of the present invention, the cross-sectional view shown in fig. 2 can be cut along a section line AA' corresponding to fig. 1, and referring to fig. 1 and fig. 2, the display panel includes a display area AA and a non-display area NAA, the display area AA includes a light emitting area AA1 and a non-light emitting area AA2 adjacent to the light emitting area, and includes:
a thin film transistor array layer 110, the thin film transistor array layer 110 including a plurality of thin film transistors;
the light emitting device layer 120, the light emitting device layer 120 includes a plurality of light emitting devices 1201, each light emitting device 1201 corresponds to a light emitting area AA1, and the light emitting devices 1201 include a first electrode 121, a light emitting layer 122, and a second electrode 123 stacked from one side of the thin film transistor array layer 110 to a direction away from the thin film transistor array layer 110;
the orthographic projection of the at least one antenna electrode 130 and the non-light-emitting area AA2 on the thin film transistor array layer 110 covers the orthographic projection of the antenna electrode 130 on the thin film transistor array layer 110.
The antenna electrode 130 in this embodiment may be an NFC (Near Field Communication) antenna electrode 130.
Specifically, the thin film transistor array layer 110 may include a semiconductor layer and at least two metal layers on one side of the semiconductor layer, and a plurality of thin film transistors and a plurality of capacitors may be formed in the semiconductor layer and the at least two metal layers on one side of the semiconductor layer. The thin film transistor array layer 110 may include a plurality of pixel circuits, and the pixel circuits may be 2T1C, 7T1C, and so on existing pixel circuits.
The light emitting device layer 120 includes a plurality of light emitting devices 1201, and the light emitting devices 1201 may be organic light emitting devices or inorganic light emitting devices, which is not specifically limited herein. Taking the light emitting device as an organic light emitting device as an example, the first electrode 121 may be an anode of the light emitting device, and the second electrode 123 may be a cathode of the light emitting device. The first electrode 121 may have a three-layer structure, in which the first layer and the third layer may be metal oxide layers such as Indium Tin Oxide (ITO), indium Zinc Oxide (IZO), and Aluminum Zinc Oxide (AZO), and the middle second layer may be a metal layer (e.g., silver or copper). The material of the second electrode 123 may be an ITO transparent electrode or a magnesium silver alloy. The light emitting layer 122 of the light emitting device may include only a single film layer, i.e., only a light emitting material layer; a multilayer structure formed by a hole injection layer, a hole transport layer, a light emitting material layer, an electron transport layer, an electron injection layer, and the like, which are stacked from the first electrode 121 to the second electrode 123, may also be included. The light emitting layer 122 may include at least a red light emitting layer 1221, a green light emitting layer 1222, and a blue light emitting layer 1223, thereby realizing a multi-color display.
The display panel further includes at least one antenna electrode 130, the antenna electrode 130 and the light emitting device layer 120 are located on the same side of the thin film transistor array layer 110, and in the thickness direction z of the display panel, the antenna electrode 130 is located at least between some adjacent light emitting devices 1201, but it should be noted that the antenna electrode 130 and the light emitting devices are arranged in an insulating manner, so as to avoid the influence of the antenna electrode 130 on the light emitting effect of the light emitting devices 1201, and to avoid the influence of the light emitting devices 1201 on the communication effect of the antenna electrode 130. The antenna electrode 130 may be formed in a manufacturing process of the display panel, fig. 2 exemplarily shows a case that the antenna electrode 130 is on the same layer as the first electrode 121 of the light emitting device, and the antenna electrode 130 may be located at least between some of the light emitting devices, so that for the display panel shown in fig. 2, the antenna electrode 130 may be formed in the same manufacturing process as the first electrode 121, thereby simplifying a manufacturing process of the display panel. The antenna electrode 130 may not be in the same layer as the first electrode 121, and the embodiment is not limited herein. When the antenna electrode 130 is on the same layer as the first electrode 121 and is fabricated in the same fabrication process, the materials of the antenna electrode 130 and the first electrode 121 may be the same. The antenna electrode 130 and the first electrode 121 are on the same layer but are not manufactured in the same manufacturing process, or when the antenna electrode 130 and the first electrode 121 are on different layers, the material of the antenna electrode 130 and the first electrode 121 may be different, and optionally, the material of the antenna electrode 130 may be at least one of silver, aluminum, copper, molybdenum, titanium, indium tin oxide, zinc oxide, and indium zinc oxide, for example, a double-layer structure of an oxide film and a metal film may be adopted, or only a single-layer metal module or an oxide film may be adopted.
Because the orthographic projection of the non-luminous area on the thin film transistor array layer covers the orthographic projection of the antenna electrode on the thin film transistor array layer, the display area of the display panel is large, the area of the non-luminous area AA2 is correspondingly large, the space for arranging the antenna electrode 130 is correspondingly large, compared with the prior art, the arrangement space of the antenna electrode 130 can be increased, and further the influence of the undersize arrangement space of the antenna electrode 130 on the communication effect is avoided. In addition, the antenna electrode 130 is disposed in the non-light emitting area AA2, so that the effect of the light emitting device 1201 is not affected, and normal display of the display panel is ensured.
The display panel of this embodiment, including thin film transistor array layer, luminescent device layer and at least one antenna electrode, the orthographic projection of non-luminous area on thin film transistor array layer covers the orthographic projection of antenna electrode on thin film transistor array layer for the space of arranging the antenna electrode is corresponding great, compares in prior art, can so that the space of arranging of antenna electrode increases, and then avoids the antenna electrode to arrange the influence that the space undersize led caused the communication effect. And the orthographic projection of the non-light-emitting area on the thin film transistor array layer covers the orthographic projection of the antenna electrode on the thin film transistor array layer, so that the antenna electrode does not influence the light emission of the light-emitting device, and the normal display of the display panel is ensured.
On the basis of the above embodiment, optionally, the antenna electrode 130 is located between the second electrode 123 and the thin film transistor array layer 110; further, the antenna electrode 130 can be manufactured in the manufacturing process of the display panel. There are various cases where the antenna electrode 130 is located between the second electrode 123 and the thin film transistor array, and specific reference may be made to the cases shown in fig. 3 to 7 below.
Fig. 3 is a cross-sectional view of another display panel provided in an embodiment of the present invention, and fig. 3 may correspond to the cross-sectional view along BB' of fig. 1. Referring to fig. 3, optionally, the display panel further includes a pixel defining layer 140, the pixel defining layer 140 is located at one side of the thin film transistor array layer 110, the pixel defining layer 140 includes a plurality of first openings 141 and a body portion 144 located between the first openings 141, and the antenna electrode 130 is disposed on the body portion 144.
The antenna electrode 130 is disposed on the main body 144, which means that the antenna electrode 130 is disposed on one side of the main body 144, or the antenna electrode 130 is disposed in the main body 130.
Each of the first openings 141 of the pixel defining layer 140 may define one sub-pixel, each of which may correspond to one of the light emitting devices, and the light emitting layer 122 is positioned in the first opening 141. The support posts 150 may be used to support the reticle during the fabrication of the display panel.
With continued reference to fig. 3, optionally, the surface of the main body portion 142 away from the tft array layer includes a groove 142 corresponding to the antenna electrode 130 one by one, and the antenna electrode 130 is disposed in the corresponding groove 142.
Specifically, since the pixel defining layer 140 is used to define the sub-pixels, the pixel defining layer 140 is located between adjacent light emitting devices, and the antenna electrode 130 is disposed on the surface of the pixel defining layer 140, so that the antenna electrode 130 is ensured to be located between the adjacent light emitting devices, and further, the arrangement of the antenna electrode 130 is ensured not to affect the light emission of the light emitting devices. Moreover, because the supporting column 150 is included between the pixel defining layer 140 and the light emitting device, the material of the supporting column 150 may be an organic insulating material, so that the antenna electrode 130 is disposed on the surface of the pixel defining layer 140 away from the thin film transistor array layer 110, and an additional insulating layer between the antenna electrode 130 and the second electrode 123 of the light emitting device is not required, so that the film structure of the display panel is less, and accordingly, the manufacturing process is simpler. Moreover, the groove 142 is formed on the surface of the pixel defining layer 140 away from the tft array layer 110, and the antenna electrode 130 is disposed in the groove 142, so that the thickness of the display panel is not increased by disposing the antenna electrode 130, and the display panel is light and thin.
The display panel shown in fig. 3 may be formed by forming a semiconductor layer and a plurality of metal layers on a substrate to form a thin film transistor array layer 110, and a film layer of the thin film transistor array layer 110 closest to the light emitting device layer 120 may be a planarization layer. Forming a first electrode 121 on one side of the planarization layer, then forming a whole layer of pixel defining layer material, forming a first opening 141 and a groove 142 of the pixel defining layer 140 by using a mask process, then forming an antenna electrode 130, and finally performing evaporation of the light emitting material of the light emitting layer 122 and manufacturing a second electrode 123.
The process of forming the display panel shown in fig. 3 may also be to form a semiconductor layer and a plurality of metal layers on the substrate to form the thin film transistor array layer 110, and a film layer of the thin film transistor array layer 110 closest to the light emitting device layer 120 may be a planarization layer. Forming a whole layer of pixel definition layer material on one side of the planarization layer, forming the first opening 141 and the groove 142 of the pixel definition layer 140 by using a mask process, forming the first electrode 121 in the first opening 141 by using the same process, forming the antenna electrode 130 in the groove, and finally performing evaporation of the light emitting material of the light emitting layer 122 and manufacturing the second electrode 123. The process after the planarization layer can also be as follows: the process of forming the first electrode 121 on the planarization layer may further include forming a first electrode layer on the planarization layer, and patterning the first electrode 121 to form an array of first electrodes. Then, a pixel defining layer 140 is formed on the first electrode 121, and a first opening 141 and a groove 142 are formed after the pixel defining layer 140 is patterned, wherein the first opening 141 exposes the first electrode 121. The antenna electrode 130 is formed in the groove 142 by deposition (evaporation), and finally, evaporation of the light emitting material of the light emitting layer and fabrication of the second electrode are performed.
Fig. 4 is a cross-sectional view of another display panel provided in an embodiment of the present invention, and fig. 4 may correspond to the cross-sectional view along BB' of fig. 1. Referring to fig. 4, optionally, the pixel defining layer 140 includes second openings 143 corresponding to the antenna electrodes 130 one to one, and the antenna electrodes 130 are disposed in the corresponding second openings 143; preferably, the material of the antenna electrode 130 is the same as that of the first electrode 121.
As for the same reason as that analyzed above with respect to the display panel shown in fig. 3, the antenna electrode 130 is disposed on the surface of the pixel defining layer 140, so that the antenna electrode 130 is ensured to be located between adjacent light emitting devices, and the arrangement of the antenna electrode 130 is further ensured not to influence the light emission of the light emitting devices. In addition, an additional insulating layer between the antenna electrode 130 and the second electrode 123 of the light emitting device is not required, so that the number of film structures of the display panel is small, and accordingly, the manufacturing process is simple. Moreover, by disposing the pixel defining layer 140 including the second opening 143 and disposing the antenna electrode 130 in the second opening 143, the thickness of the display panel is not increased by disposing the antenna electrode 130, thereby ensuring the lightness and thinness of the display panel.
The manufacturing process of the display panel shown in fig. 4 is similar to that of the display panel shown in fig. 3, but is different from that of the display panel shown in fig. 3 in that after the material of the entire layer of the pixel defining layer 140 is formed, the first opening 141 and the second opening 143 are formed. In the case of the difference between the structures of the second opening 143 of the pixel defining layer 140 and the groove 142, the second opening 143 penetrates through the pixel defining layer 140, and the groove 142 does not penetrate through the pixel defining layer 140. For the display panel shown in fig. 3, the exposure intensity at the position of the first opening 141 and the position of the groove 142 are different; for the display panel shown in fig. 4, the same exposure intensity may be used at the position of the first opening 141 and the position of the second opening 143.
With continued reference to fig. 3 and 4, optionally, the display panel further includes a supporting pillar 150, and the supporting pillar 150 is located on a side of the pixel defining layer 140 away from the thin film transistor array layer 110. The supporting post 150 includes a bottom structure 151 covering the antenna electrode 130 and a top structure 152 protruding from the bottom structure, and a dimension d1 of the top structure 152 is smaller than a dimension d2 of the bottom structure 151 in a wiring direction of adjacent light emitting devices.
Specifically, the bottom structure 151 of the supporting pillar 150 covers the antenna electrode 130, so that the second electrode 123 on the side of the supporting pillar 150 away from the thin film transistor array layer 110 cannot contact the antenna electrode 130, and the material of the supporting pillar 150 may be an organic insulating material, so that the supporting pillar 150 serves as an insulating layer between the antenna electrode 130 and the second electrode 123 of the light emitting device. In the direction of the connecting line of the adjacent light emitting devices, the size of the top structure 152 is smaller than that of the bottom structure 151, so that for the same supporting column 150 and the same light emitting device, the distance between the top structure 152 and the side, closest to the supporting column 150, of the light emitting layer of the light emitting device is greater than that between the bottom structure 151 and the side, closest to the supporting column 150, of the light emitting layer, and therefore shielding of the supporting column 150 for light rays with larger viewing angles emitted by the light emitting device can be reduced, and higher brightness and better display effect under large viewing angles are ensured. For the structure of the supporting pillars 150 shown in fig. 3 and 4, the pattern structure can be made by using a halftone process after the entire layer of the supporting pillar 150 material is formed.
The display panel structure shown in fig. 3 and fig. 4 corresponds to the structure in which the antenna electrode 130 is disposed on the side of the supporting pillar 150 close to the thin film transistor array layer 110, in other embodiments of the present invention, the antenna electrode 130 may also be disposed on the side of the supporting pillar 150 away from the thin film transistor array layer 110, or the supporting pillar 150 includes an opening, and the antenna electrode 130 is disposed in the opening of the supporting pillar 150. Fig. 5 is a cross-sectional view of another display panel provided in an embodiment of the present invention, and fig. 5 may correspond to the cross-sectional view along BB' of fig. 1. Referring to fig. 5, optionally, the surface of the supporting posts 150 away from the tft array layer 110 includes grooves 151 corresponding to the antenna electrodes 130 one by one, and the antenna electrodes 130 are disposed in the corresponding grooves 151.
Because the supporting pillars 150 are located between adjacent light emitting devices, the antenna electrode 130 is disposed on the surface of the supporting pillars 150, so that the antenna electrode 130 is ensured to be located between the adjacent light emitting devices, and further, the arrangement of the antenna electrode 130 is ensured not to be influenced by the light emission of the light emitting devices. Moreover, the groove 151 is formed on the surface of the supporting pillar 150 away from the tft array layer 110, and the antenna electrode 130 is disposed in the groove 151, so that the thickness of the display panel is not increased by the antenna electrode 130, and the display panel is light and thin.
Fig. 6 is a cross-sectional view of another display panel provided in an embodiment of the present invention, and fig. 6 may correspond to the cross-sectional view along BB' of fig. 1. Referring to fig. 6, optionally, the supporting column 150 includes third openings 152 corresponding to the antenna electrodes 130 one by one, and the antenna electrodes 130 are disposed in the corresponding third openings 152.
As for the reason analyzed above with respect to the display panel shown in fig. 5, the antenna electrode 130 is disposed on the surface of the supporting pillar 150, so that the antenna electrode 130 is ensured to be located between adjacent light emitting devices, and the arrangement of the antenna electrode 130 is further ensured not to influence the light emission of the light emitting devices. Moreover, the supporting posts 150 include the third openings 152, and the antenna electrodes 130 are disposed in the third openings 152, so that the thickness of the display panel is not increased by disposing the antenna electrodes 130, and the display panel is light and thin.
In the above embodiments, the supporting pillars 150 are made of insulating materials, in other embodiments of the present invention, the supporting pillars 150 may also be made of conductive materials, and when the supporting pillars 150 are made of conductive materials, the supporting pillars 150 may serve as the antenna electrodes 130. Fig. 7 is a cross-sectional view of another display panel provided in an embodiment of the present invention, and fig. 7 may correspond to the cross-sectional view along BB' of fig. 1. Referring to fig. 7, optionally, the supporting pillar 150 serves as the antenna electrode 130, and the material of the supporting pillar 150 is at least one of silver, aluminum, copper, molybdenum, titanium, indium tin oxide, zinc oxide, and indium zinc oxide.
The supporting posts 150 are used as the antenna electrodes 130, so that the antenna electrodes 130 can be manufactured without extra steps, and further, in the forming process of the display panel, no additional process steps are needed, and the manufacturing process is simplified. When the supporting posts 150 are used as the antenna electrodes 130, different antenna electrodes 130 are disconnected from each other, so that short circuit between the antenna electrodes 130 is prevented.
With continued reference to fig. 5-7, optionally, an insulating layer 160 is included on a side of the supporting pillar 150 away from the thin film transistor array layer 110, so as to ensure good insulation between the antenna electrode 130 and the second electrode 123 of the light emitting device, and ensure a communication effect of the antenna electrode 130 and a light emitting effect of the light emitting device.
In the above embodiments, the antenna electrodes 130 are disposed on the side of the second electrode 123 close to the thin film transistor array layer 110, and in other embodiments of the present invention, the antenna electrodes 130 may also be disposed on the side of the second electrode 123 far from the thin film transistor array layer 110, specifically referring to fig. 8, fig. 8 is a cross-sectional view of another display panel provided in an embodiment of the present invention, and fig. 8 may be a cross-sectional view along BB' corresponding to fig. 1. Disposing the antenna electrode 130 on the side of the second electrode 123 away from the thin film transistor array layer 110 may not require changes in the process steps before forming the light emitting device layer 120 and forming the light emitting device layer 120. In fig. 8, which schematically shows a structure including an insulating layer between the antenna electrode 130 and the second electrode 123, when the display panel is formed, after the second electrode 123 is manufactured, the insulating layer may be formed on one side of the second electrode 123, and then the antenna electrode 130 may be formed. However, the structure that the antenna electrode 130 can be disposed on the side of the second electrode 123 far from the thin film transistor array layer 110 is not limited thereto, and the antenna electrode 130 can also be integrated in a touch module, and the touch module is hung on a display module (including the thin film transistor array layer 110 and the light emitting device layer 120), and the embodiment is not limited thereto.
Fig. 9 is a cross-sectional view of another display panel provided in an embodiment of the present invention, and fig. 9 may correspond to the cross-sectional view along BB' of fig. 1. Referring to fig. 9, optionally, the thin film transistor array layer 110 includes an array circuit layer 111 and a planarization layer 112 on one side of the array circuit layer 111 close to the light emitting device layer, and the antenna electrode 130 is disposed on the planarization layer 112. Specifically, the surface of the planarization layer 112 away from the array circuit layer 111 may include a groove antenna electrode in a groove of the planarization layer 112.
On the basis of the above technical solutions, optionally, the display panel further includes a packaging layer (not shown in the figure), and the packaging layer may be disposed on a side of the second electrode 123 far away from the thin film transistor array layer 110; further, the light-emitting device is prevented from being corroded by oxygen, and the service life of the display panel is prolonged.
According to the technical scheme of the embodiment, the structures are provided when the antenna electrode and the light-emitting device layer are positioned on the same side of the thin film transistor array layer, the antenna electrode can be further arranged in other film layer structures of a non-light-emitting area, and when the display panel comprises the touch functional layer, the antenna electrode can be further arranged in the touch functional layer, but the antenna electrode and the touch functional layer need to be arranged in an insulating mode.
With continued reference to fig. 1, optionally, the antenna electrodes 130 are strip-shaped, and each antenna electrode 130 extends along the row direction x or the column direction y of the light emitting device; because the light emitting devices are arranged in an array, the antenna electrode 130 is arranged in a strip shape, so that the antenna electrode 130 can be conveniently arranged between the adjacent light emitting devices. Fig. 10 is a top view of another display panel provided in an embodiment of the present invention, and referring to fig. 10, optionally, the antenna electrode 130 extends along a column direction y of the light emitting devices, and a dimension of the antenna electrode 130 in the column direction y of the light emitting devices is greater than or equal to a farthest distance between the light emitting devices in the first row and the light emitting devices in the last row. Since signals related to the antenna electrode 130 must be led out or led in through the antenna electrode lead 170, and the space of the display area is limited, and the antenna electrode 130 is already provided, the space for the antenna electrode lead 170 in the display area may be insufficient, and the size of the antenna electrode 130 in the column direction y of the light emitting devices is set to be greater than or equal to the farthest distance between the first row and the last row of the light emitting devices, so that the antenna electrode lead 170 is directly connected to the antenna electrode 130 in the non-display area of the display panel, which facilitates the wiring arrangement of the antenna electrode lead 170.
It should be noted that fig. 10 only illustrates the antenna electrode 130 extending along the column direction y of the light emitting devices, and when the antenna electrode 130 extends along the row direction x, the size of the antenna electrode 130 in the row direction x of the light emitting devices is greater than or equal to the farthest distance between the first column and the last column of the light emitting devices.
Fig. 11 is a top view of another display panel provided in an embodiment of the invention, and referring to fig. 11, alternatively, the antenna electrode 130 is in a grid shape, and in a thickness direction z of the display panel, an orthographic projection of the antenna electrode 130 on the thin film transistor array layer 110 surrounds an orthographic projection of the light emitting device on the thin film transistor array layer 110; and then guarantee that antenna electrode 130 can not shelter from the light that emitting device sent, guarantee the normal line of display panel basis for antenna electrode 130 can have great area, is favorable to the realization of communication function.
Alternatively, the antenna electrode 130 spans at least one row of light emitting devices or at least one column of light emitting devices, and a row direction x of the light emitting devices intersects a column direction y of the light emitting devices.
The antenna electrode 130 spans at least one row of light emitting devices or at least one column of light emitting devices, which may mean that the size of the antenna electrode 130 in the row direction x of the light emitting devices is greater than the farthest distance between two adjacent rows of light emitting devices or the size of the antenna electrode 130 in the column direction y of the light emitting devices is greater than the farthest distance between two adjacent columns of light emitting devices, thereby ensuring that the antenna electrode 130 has a larger area. For example, for the display panel shown in fig. 11, the antenna electrode 130 spans a row of light emitting devices, which may facilitate the arrangement of the antenna electrode leads, and the principle is similar to that of the display panel shown in fig. 10, and is not repeated here.
Fig. 12 is a top view of another display panel according to an embodiment of the present invention, fig. 13 is a cross-sectional view of the another display panel according to the embodiment of the present invention, fig. 13 is a cross-sectional view obtained by cutting along a section line CC' corresponding to fig. 12, and referring to fig. 12 and fig. 13, based on the above technical solution, optionally, the second electrode 123 includes an electrode portion 1231 and a hollow portion 1232, an orthogonal projection of the electrode portion 1231 on the thin film transistor array layer 110 at least covers an orthogonal projection of the light emitting layer 122 on the thin film transistor array layer 110, and an orthogonal projection of the hollow portion 1232 on the thin film transistor array layer 110 overlaps with an orthogonal projection of at least a portion of the antenna electrode 130 on the thin film transistor array layer.
Specifically, the electrode portion 1231 of the second electrode 123 covers the light emitting layer 122, thereby ensuring that a completed light emitting device can be formed. Moreover, the hollow-out portion 1232 overlaps at least a portion of the antenna electrode 130, so that at least a portion of the area in the thickness direction z of the display panel includes the antenna electrode 130 but not the second electrode 123, and the shielding effect of the second electrode 123 on the antenna signal can be reduced, thereby improving the reliability of the antenna electrode 130 for receiving the antenna signal. Moreover, as shown in fig. 12, when the overall extending direction of the antenna electrode 130 is the column direction y of the light emitting device, the electrode portion 1231 of the second electrode 123 may include a plurality of sub-electrode portions 12311 whose overall extending direction is along the row direction x of the light emitting device, so that the overlapping area of the hollow portion 1232 of the second electrode 123 and the antenna electrode 120 is larger, and the shielding effect of the second electrode 123 on the antenna signal is further reduced, and the reliability of the antenna electrode 130 for receiving the antenna signal is further improved. When the general extending direction of the antenna electrode 130 is the row direction x of the light emitting devices, the electrode part 1231 of the second electrode 123 may include a plurality of sub-electrode parts 12311 having the general extending direction along the light emitting device column direction.
When the second electrode 123 is formed, a material of the entire second electrode 123 may be formed, and then a patterning process is adopted to remove a portion of the material of the second electrode 123 to form the hollow portion 1232, and the second electrode material that is not removed serves as the electrode portion 1231. For the display panel shown in fig. 12, in order to further reduce the shielding effect of the second electrode 123 on the antenna signal, the second electrode material at the position between the light emitting devices may also be removed in each of the sub-electrode portions 12311.
With continuing reference to fig. 1, 10-12, optionally, the display panel further includes a non-display area NAA; the display panel further includes an antenna electrode lead 170, the antenna electrode lead 170 is at least partially disposed in the non-display area NAA, and the antenna electrode 130 is disposed in the display area AA; each antenna electrode 130 is correspondingly connected with two antenna electrode leads 170, and the antenna electrode leads 170 connected with different antenna electrodes 130 are different.
Specifically, the display device including the display panel may include an antenna driver, the antenna electrode lead 170 may connect the antenna electrode 130 and the antenna driver, and signal transmission between the antenna electrode 130 and the antenna driver is achieved through the antenna electrode lead 170, and the antenna electrode 130, the antenna driver, and two antenna electrode leads 170 connecting the two form an antenna loop. The antenna electrode lead 170 is at least partially located in the non-display area NAA, so that the antenna electrode lead 170 occupies a smaller area of the display area AA, and the antenna electrode 130 in the display area AA can have a larger layout space.
Optionally, the antenna electrode lead 170 and the antenna electrode 130 are disposed on the same layer, so that the antenna electrode lead 170 and the antenna electrode 130 can be manufactured in the same manufacturing process, and the manufacturing process is simplified.
Fig. 14 is a schematic structural diagram of a display device according to an embodiment of the present invention, and referring to fig. 14, the display device includes the display panel 10 according to any of the embodiments of the present invention, and further includes a main board 20, a display driver 30, and an antenna driver 40, where the main board 20 is electrically connected to the display driver 30 and the antenna driver 40, respectively. Wherein the antenna driver 40 may be electrically connected with the antenna electrode lead.
Optionally, the working process of the display device can be divided into two working phases: a display stage and an antenna operating stage, wherein in the display stage, the main board 20 can control the antenna driver 40 not to operate and control the display driver 30 to operate, and accordingly, the antenna electrode cannot receive the signal of the antenna driver 40; in the antenna operation stage, the main board 20 may control the antenna driver 40 to operate and control the display driver 30 not to operate, and accordingly, the antenna electrode may receive a signal of the antenna driver 40; by controlling the operation of the display driver 30 and the antenna driver 40 in a time-sharing manner, the mutual interference between the display driver 30 and the antenna driver 40, the mutual interference between the antenna electrode and the light emitting device in the panel, and the mutual interference between the antenna electrode lead and the display driving signal line can be avoided.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (12)
1. A display panel including a display region including a light-emitting region and a non-light-emitting region adjacent to the light-emitting region, the display panel comprising:
a thin film transistor array layer including a plurality of thin film transistors;
the light-emitting device layer comprises a plurality of light-emitting devices, each light-emitting device corresponds to one light-emitting area, and each light-emitting device comprises a first electrode, a light-emitting layer and a second electrode which are stacked in a direction from one side of the thin film transistor array layer to a direction far away from the thin film transistor array layer;
at least one antenna electrode, wherein the orthographic projection of the non-luminous area on the thin film transistor array layer covers the orthographic projection of the antenna electrode on the thin film transistor array layer;
the second electrode comprises an electrode part and a hollow part, the orthographic projection of the electrode part on the thin film transistor array layer at least covers the orthographic projection of the light emitting layer on the thin film transistor array layer, and the orthographic projection of the hollow part on the thin film transistor array layer is overlapped with the orthographic projection of at least part of the antenna electrode on the thin film transistor array layer.
2. The display panel according to claim 1, further comprising a pixel defining layer on one side of the thin film transistor array layer, the pixel defining layer including a plurality of first openings, and a body portion between the first openings, the antenna electrode being disposed on the body portion.
3. The display panel according to claim 2,
the surface of the body part, which is far away from the thin film transistor array layer, comprises grooves which are in one-to-one correspondence with the antenna electrodes, and the antenna electrodes are arranged in the corresponding grooves;
or, the pixel defining layer includes second openings corresponding to the antenna electrodes one to one, and the antenna electrodes are disposed in the corresponding second openings.
4. The display panel according to claim 3, wherein a material of the antenna electrode is the same as a material of the first electrode.
5. The display panel according to claim 3, further comprising a supporting pillar on a side of the body portion away from the thin film transistor array layer;
the support column comprises a bottom structure covering the antenna electrode and a top structure protruding out of the bottom structure, and the size of the top structure is smaller than that of the bottom structure in the direction of connecting lines of adjacent light-emitting devices.
6. The display panel according to claim 2, further comprising a supporting pillar on a side of the body portion away from the thin film transistor array layer;
the surface, far away from the thin film transistor array layer, of the supporting column comprises grooves corresponding to the antenna electrodes one to one, and the antenna electrodes are arranged in the corresponding grooves;
or the support column comprises third openings corresponding to the antenna electrodes one by one, and the antenna electrodes are arranged in the corresponding third openings.
7. The display panel according to claim 2, further comprising a supporting pillar on a side of the body portion away from the thin film transistor array layer;
the support column is used as the antenna electrode, and the support column is made of at least one of silver, aluminum, copper, molybdenum, titanium, indium tin oxide, zinc oxide and indium zinc oxide.
8. The display panel according to claim 1, wherein the antenna electrode is disposed on the same layer as the first electrode and located between at least a portion of the first electrode;
or the antenna electrode is positioned on one side of the second electrode far away from the thin film transistor array layer;
or, the thin film transistor array layer comprises an array circuit layer and a planarization layer on one side of the array circuit layer close to the light-emitting device layer, and the antenna electrode is arranged on the planarization layer.
9. The display panel according to claim 1, wherein the antenna electrodes are stripe-shaped, and each of the antenna electrodes extends in a row direction or a column direction of the light emitting device;
or the antenna electrode is in a grid shape, and the orthographic projection of the antenna electrode on the thin film transistor array layer surrounds the orthographic projection of the light-emitting device on the thin film transistor array layer;
the row direction of the light emitting devices intersects the column direction of the light emitting devices.
10. The display panel according to claim 9, wherein the antenna electrode spans at least one row of the light emitting devices or at least one column of the light emitting devices.
11. The display panel according to claim 1, wherein the display panel further comprises a non-display region;
the display panel further comprises an antenna electrode lead, at least part of the antenna electrode lead is arranged in the non-display area, and the antenna electrode is arranged in the display area; each antenna electrode is respectively and correspondingly connected with two antenna electrode leads, and the antenna electrode leads connected with different antenna electrodes are different.
12. The display panel according to claim 11, wherein the antenna electrode lead is provided in the same layer as the antenna electrode.
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| CN113013220B (en) * | 2021-03-22 | 2024-04-26 | 合肥维信诺科技有限公司 | Display panel and display device |
| CN114170938B (en) * | 2021-11-24 | 2023-11-21 | 云谷（固安）科技有限公司 | Display panel and display device |
| CN116897470A (en) * | 2022-01-29 | 2023-10-17 | 京东方科技集团股份有限公司 | Antenna, display substrate and display device |
| CN114879393B (en) * | 2022-04-26 | 2023-10-31 | 广州华星光电半导体显示技术有限公司 | Display panel and terminal equipment |
| CN117940843A (en) * | 2022-08-26 | 2024-04-26 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108733196A (en) * | 2017-04-13 | 2018-11-02 | 京东方科技集团股份有限公司 | Display base plate, display device and its operating method |
| CN111341814A (en) * | 2020-03-11 | 2020-06-26 | 深圳市华星光电半导体显示技术有限公司 | Display panel and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108733196A (en) * | 2017-04-13 | 2018-11-02 | 京东方科技集团股份有限公司 | Display base plate, display device and its operating method |
| CN111341814A (en) * | 2020-03-11 | 2020-06-26 | 深圳市华星光电半导体显示技术有限公司 | Display panel and manufacturing method thereof |
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