CN108873515B - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN108873515B
CN108873515B CN201810630548.2A CN201810630548A CN108873515B CN 108873515 B CN108873515 B CN 108873515B CN 201810630548 A CN201810630548 A CN 201810630548A CN 108873515 B CN108873515 B CN 108873515B
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Prior art keywords
display area
common electrode
display
display panel
electrode layer
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CN201810630548.2A
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CN108873515A (en
Inventor
李东华
魏晓丽
周秀峰
沈柏平
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Xiamen Tianma Microelectronics Co Ltd
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Xiamen Tianma Microelectronics Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136204—Arrangements to prevent high voltage or static electricity failures
    • 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
    • H10K59/126—Shielding, e.g. light-blocking means over the TFTs
    • 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
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • 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

Abstract

The invention discloses a display panel and a display device, which belong to the technical field of display and comprise: the display device comprises a hollow-out part, a first non-display area, a display area and a second non-display area; the first non-display area is arranged around the hollow part, the display area is arranged around the first non-display area, and the second non-display area is arranged around the display area; the first non-display area comprises a conducting ring, and the conducting ring is arranged around the hollow part; the display area comprises a thin film transistor layer and a common electrode layer; the thin film transistor layer comprises a plurality of thin film transistors, each thin film transistor comprises a semiconductor part, a grid electrode, a source electrode and a drain electrode, and the semiconductor part and the conducting ring are positioned on the same film layer; the common electrode layer extends to the first non-display area and is electrically connected with the conducting ring; the common electrode layer is electrically connected to the common electrode line. Compared with the prior art, when the display panel is ensured to have good electrostatic protection performance, the display effect of the display panel is not influenced, and the comprehensive screen design is easier to realize.

Description

Display panel and display device
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
The existing display device usually adopts the mode of holing in the casing to place and install the camera, because the static protective structure is not generally laid around the trompil position, inside the very easy open pore position invasion panel of holding of outside static electric charge, the static discharge point of failure that appears on making the panel influences display device's display effect, serious can cause irreparable damage even to the panel.
Disclosure of Invention
In view of the above, the present invention provides a display panel, including:
the display device comprises a hollow-out part, a first non-display area, a display area and a second non-display area; the first non-display area is arranged around the hollow part, the display area is arranged around the first non-display area, and the second non-display area is arranged around the display area; the first non-display area comprises a conducting ring, and the conducting ring is arranged around the hollow part; the display area comprises a thin film transistor layer and a common electrode layer; the thin film transistor layer comprises a plurality of thin film transistors arranged on the substrate, each thin film transistor comprises a semiconductor part, a grid electrode, a source electrode and a drain electrode, and the semiconductor part and the conducting ring are positioned on the same film layer; the common electrode layer extends to the first non-display area and is electrically connected with the conducting ring; the common electrode layer is electrically connected to the common electrode line.
The invention also provides a display device which comprises the display panel provided by the invention.
Compared with the prior art, the display panel and the display device provided by the invention at least realize the following beneficial effects:
1. by arranging the conducting ring, external static charges entering the display panel are led into the common electrode layer extended to the first non-display area, and then static electricity is released by the common electrode wire, so that the routing arrangement in the display panel is reduced, the external static charges cannot be accumulated in the hollow part, and the static protection performance of the display panel is improved;
2. the conducting ring is arranged in the first non-display area, so that the display effect of the display panel is not influenced while the display panel has good electrostatic protection performance, and the overall screen design is easier to realize;
3. the conducting ring and the semiconductor part of the thin film transistor are located on the same film layer, and additional film layers are not needed, so that the antistatic cost of the display panel is reduced, and the production efficiency of the display panel is improved.
Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic plan view of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view taken along line C-C of FIG. 1;
FIG. 3 is a schematic diagram illustrating a planar structure of a conductive ring according to an embodiment of the present invention;
FIG. 4 is a schematic plan view of another display panel according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view taken along line D-D of FIG. 4;
FIG. 6 is a schematic diagram of a planar structure of another display panel according to an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view taken along the line E-E in FIG. 6;
FIG. 8 is a schematic diagram of a planar structure of another display panel according to an embodiment of the present invention;
fig. 9 is a schematic plan view illustrating a display panel according to another embodiment of the present invention;
FIG. 10 is a schematic sectional view taken along the direction F-F in FIG. 9;
fig. 11 is a schematic plan view illustrating a display panel according to another embodiment of the present invention;
FIG. 12 is a schematic sectional view taken along the line G-G in FIG. 11;
fig. 13 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Referring to fig. 1 and 2, the present invention provides a display panel, including: the hollow part 10, the first non-display area B1, the display area AA, and the second non-display area B2; the first non-display area B1 is disposed around the hollow 10, the display area AA is disposed around the first non-display area B1, and the second non-display area B2 is disposed around the display area AA; the first non-display area B1 includes a conductive ring 11, the conductive ring 11 is disposed around the hollow portion 10; the display area AA includes a thin film transistor layer and a common electrode layer 14; the thin film transistor layer 13 includes a plurality of thin film transistors T disposed on the substrate 12, each thin film transistor T includes a semiconductor portion T1, a gate T2, a source T3, and a drain T4, and the semiconductor portion T1 and the conductive ring 11 are located in the same film layer; the common electrode layer 14 extends to the first non-display region B1 and is electrically connected to the conductive ring 11; the common electrode layer 14 and the common electrode line 15 are electrically connected. In order to more intuitively illustrate the technical solution of the present application, the film layer structure such as the common electrode layer 14 is not illustrated in the plan view structure shown in fig. 1, but is illustrated in the cross-sectional structure shown in fig. 2.
Specifically, the common electrode layer 14 may be an ITO (indium tin oxide) thin film, and since the ITO thin film has high resistivity and visible light transmittance, the electrostatic charges introduced by the conductive ring 11 can be efficiently led out to the common electrode line 15 for releasing. There are various ways of disposing the common electrode lines 15, and this embodiment does not specifically limit this, and only the common electrode lines 15 are disposed by metal traces located in the second non-display area B2 of the display panel, which is taken as an example for explanation.
The hollow portion 10 is mainly used for placing and installing components such as a camera or an earphone, and external electrostatic charges easily enter the display panel through the hollow portion 10 to break down components in the display panel, such as a thin film transistor T. In the display panel provided in this embodiment, since the conductive ring 11 is disposed at the periphery of the hollow portion 10, external electrostatic charges can be conducted into the common electrode layer 14 through the conductive ring 11, and then released through the common electrode line 15, so as to achieve the purpose of electrostatic protection.
The conducting ring 11 and the semiconductor part T1 are located on the same film layer, on one hand, the conducting ring 11 can be photoetched together with the semiconductor part T1 and other structures of the same film layer, and the production efficiency of the display panel is improved; on the other hand, the film layer is not required to be additionally arranged, so that the light and thin display device is favorable for realizing the light and thin display device and is convenient to carry and use. The material of the film layer where the conductive ring 11 and the semiconductor portion T1 are located together can be single crystal silicon, polysilicon or non-metal oxide.
It should be noted that the specific position of the hollow portion 10 on the display panel can be designed according to the actual use requirement on the basis of satisfying the above structural relationship, and the hollow portion 10 can be a through hole penetrating through the display panel; or the blind holes do not penetrate through the display panel, namely, the film layer is not dug or only part of the transparent film layer is reserved under the condition of not influencing the function of the camera. Of course, the shape of the through-hole or the blind-hole is not particularly limited in the present invention. In order to more intuitively illustrate the technical solution of the present application, the hollow portion 10 in the present application is regarded as a circular through hole, and is not further described in the following.
The display panel provided by the embodiment at least has the following technical effects:
1. by arranging the conducting ring, external static charges entering the display panel are led into the common electrode layer extended to the first non-display area, and then static electricity is released by the common electrode wire, so that the routing arrangement in the display panel is reduced, the external static charges cannot be accumulated in the hollow part, and the static protection performance of the display panel is improved;
2. the conducting ring is arranged in the first non-display area, so that the display effect of the display panel is not influenced while the display panel has good electrostatic protection performance, and the overall screen design is easier to realize;
3. the conducting ring and the semiconductor part of the thin film transistor are located on the same film layer, and additional film layers are not needed, so that the antistatic cost of the display panel is reduced, and the production efficiency of the display panel is improved.
In some alternative embodiments, please refer to fig. 2 and fig. 3 in combination, the conductive ring 11 includes a ring portion 110 and at least one tip portion 111, and the ring portion 110 and the at least one tip portion 111 are integrally formed; the ring part 110 is disposed around the hollow part 10 and electrically connected to the common electrode layer 14 through at least one first via 141; at least one tip 111 is located at one side of the ring portion 110 close to the hollow portion 10, and a tip of each tip 111 faces the hollow portion 10.
In this embodiment, at least one tip 111 is integrally formed on the ring portion 110 of the conductive ring 11 at a side close to the hollow portion 10, and a tip of each tip 111 faces the hollow portion 10, so that external electrostatic charges entering the display panel from the hollow portion 10 can be more easily attracted to the tip of each tip 111, and are guided into the common electrode layer 14 from the ring portion 110 through the first via 141 for being released, thereby effectively improving the capability of the conductive ring 11 for collecting electrostatic charges. In order to enable the external electrostatic charges to be attracted to the tip more quickly and uniformly, the number of the tips 111 may be increased appropriately and the tips may be uniformly arranged along the hollow portion 10 on the side of the ring portion 110 close to the hollow portion 10.
The tip 111 may be formed by etching the ring portion 110 and other structures of the same film layer at one time, or formed by adding a mask to the ring portion 110 and performing a second etching, and the like.
Optionally, as shown in fig. 3, the width of the ring portion 110 is h1, and the width of the tip portion 111 is h2, wherein h1 is greater than or equal to h 2. In the present embodiment, the width h1 of the ring portion 110 is the radial distance between the inner edge and the outer edge of the ring portion 110; the non-tip of tip 111 (i.e., the end of tip 111 that engages ring 110) may be an arcuate configuration concentric with ring 110, such that the width h2 of tip 111 is the radial distance between the circle in which the tip of tip 111 is located (which is also concentric with ring 110) and the arcuate configuration. Of course, the non-pointed end of the tip 111 may be a straight line or other shape, and the present invention is not particularly limited thereto.
In some alternative embodiments, please refer to fig. 4 and 5, the common electrode lines 15 are located in the second non-display regions B2; the common electrode layer 14 is planar, and in the direction perpendicular to the substrate base plate 12, the common electrode layer 14 and the common electrode line 15 are overlapped; the common electrode layer 14 is electrically connected to the common electrode line 15 through a plurality of second vias 142. In order to more intuitively illustrate the technical solution of the present application, the other film layer structure is not illustrated in the plan view structure shown in fig. 4, but is illustrated in the cross-sectional structure shown in fig. 5.
In this embodiment, in order to release the static charges accumulated on the conductive ring 11 through the common electrode line 15 located in the second non-display region B2, the common electrode layer 14 is extended to not only the first non-display region B1 but also the second non-display region B2, and the extended area of the second non-display region B2 is only required to be as large as the common electrode layer 14 and the common electrode line 15 are overlapped in a direction perpendicular to the substrate 12.
Optionally, as shown in fig. 4, the common electrode line 15 located in the second non-display area B2 is U-shaped and semi-surrounds the display area AA, and two end portions of the common electrode line 15 may be electrically connected to the driving chip IC disposed in the second non-display area B2 through another metal lead, so that the common electrode layer 14 releases electrostatic charges through the driving chip IC, and the display panel has electrostatic protection performance.
In order to make the common potential of the common electrode layer 14 meet the requirement of uniformity in the electrostatic discharge process, on one hand, the second via holes 142 for connecting the common electrode line 15 and the common electrode layer 14 may be provided in a plurality at intervals; on the other hand, the common electrode line 15 can also be designed to be wider to reduce the resistance, so that the uniformity of charges in the electrostatic discharge process is better, and the stability of electrostatic protection is improved.
Alternatively, as shown in fig. 5, the common electrode line 15 and the source and drain electrodes T3 and T4 are located in the same film. In this embodiment, the common electrode line 15 is formed by multiplexing the original metal film layers for manufacturing the source T3 and the drain T4 of the display panel, so that on one hand, the production efficiency of the display panel can be improved, the manufacturing cost and the antistatic cost of the display panel can be reduced, and the display panel can be thinned; on the other hand, the resistance of the metal film layer is low, the electrostatic charges are more easily released through the common electrode line 15, and the electrostatic protection performance of the display panel is better.
In some optional embodiments, please refer to fig. 6 and 7, the common electrode layer 14 includes a plurality of common electrodes 140 arranged in an array, the common electrodes 140 are reused as touch electrodes 141, and the common electrode lines 15 are reused as touch lines 151; one touch electrode 141 is electrically connected to at least one touch line 151 and insulated from the remaining touch lines 151. In order to more intuitively illustrate the technical solution of the present application, the other film layer structure is not illustrated in the plan view structure shown in fig. 6, but is illustrated in the cross-sectional structure shown in fig. 5.
In this embodiment, the common electrodes 140 arranged in an array in the common electrode layer 14 are reused as the touch electrodes 141, so that the electrostatic protection performance is provided while the touch is realized; the common electrode lines 15 are multiplexed as the touch lines 151, which is beneficial to reducing the routing arrangement in the display panel, and the positions of the film layers where the touch lines 151 are located in each film layer of the display panel may be various, which is not specifically limited in this embodiment, and only the case where the film layer where the touch lines 151 are located is located above the thin film transistor layer 13 is taken as an example for description. When the external electrostatic charge is introduced into the display panel, it can be discharged through the touch line 151. Therefore, the display panel has the electrostatic protection performance through multiplexing of the common electrode 140 and the common electrode line 15, and meanwhile, a film layer does not need to be added, so that the display device is light and thin.
Optionally, with continued reference to fig. 6 and 7, a portion of the touch electrodes 141 in the first non-display area B1 are first touch electrodes 1410, and at least one of the first touch electrodes 1410 is electrically connected to the conductive ring 11. In the schematic plan view of fig. 6, there are four touch electrodes 141 partially located in the first non-display area B1, but the number of the touch electrodes may vary according to the specific position of the hollow portion 10 on the display panel, and the invention is not limited thereto.
In this embodiment, at least one first touch electrode 1410 may be connected to the conductive ring 11, and when the external electrostatic charges enter the display panel through the hollow portion 10, the external electrostatic charges are collected and guided into the first touch electrode 1410 connected to the conductive ring 11 through the conductive ring 11, and then released through the touch line 151 electrically connected to the first touch electrode 1410. Of course, the electrostatic discharge manner of the touch line 151 may be various, and the embodiment is not particularly limited thereto.
Alternatively, as shown in fig. 7 and fig. 8, the second non-display area B2 includes the esd protection circuit 16 and the bonding area 17, and the esd protection circuit 16 and the bonding area 17 are located at two opposite sides of the display area AA; the bonding region 17 includes a plurality of conductive pads 170; one end of the touch line 151 is electrically connected to the electrostatic protection circuit 16, and the other end is electrically connected to the conductive pad 170. In order to more intuitively illustrate the technical solution of the present application, other film layer structures are not illustrated in the plan view structure diagram shown in fig. 8.
In this embodiment, two ends of the touch line 151 are electrically connected to the esd protection circuit 16 and the conductive pad 170, respectively, so as to perform an all-directional esd protection on the display panel. Meanwhile, with the at least one first touch electrode 1410 connected to the conductive ring 11, the external electrostatic charges entering the display panel from the hollow portion 10 continue to pass through the first touch electrode 1410 and the touch line 151 electrically connected thereto, and are discharged by the electrostatic protection circuit 16 and the conductive pad 170. The specific circuit structure of the esd protection circuit 16 may be various, and the present embodiment is not limited to this.
Of course, in some alternative embodiments, the touch lines 151 may also discharge the electrostatic charges only by electrically connecting with the conductive pads 170, in which case the amount of electrostatic charges is generally enough to be discharged through the conductive pads 170, so as to protect the display panel.
In some optional embodiments, please refer to fig. 9 and 10, the display panel further includes a pixel electrode layer 18, the pixel electrode layer 18 includes a plurality of dummy electrodes 181 located in the first non-display region B1, and the dummy electrodes 181 are electrically connected to the common electrode layer 14 through the third vias 143; the dummy electrode 181 and the common electrode layer 14 overlap in a direction perpendicular to the base substrate 12. In order to more intuitively illustrate the technical solution of the present application, only the planar structure of the pixel electrode layer 18 and the common electrode layer 14 in the first non-display region B1 is illustrated in the planar structure diagram shown in fig. 9.
In this embodiment, the common electrode layer 14 may be planar and extend to the first non-display region B1, and the virtual electrode 181 has the same potential as the common electrode layer 14 through the third via hole 143, so that the virtual electrode 181 is not used for display control. When the external electrostatic charge entering the display panel from the hollow portion 10 is too large, the thin film transistor T corresponding to the control dummy electrode 181 not used for displaying is broken down first, and at this time, the display panel can still display normally.
Optionally, referring to fig. 11 and 12, the common electrode layer 14 may also include a plurality of common electrodes 140 arranged in an array, the common electrodes 140 are reused as touch electrodes 141, and a portion of the touch electrodes 141 located in the first non-display region B1 is a first touch electrode 1410, each first touch electrode 1410 overlaps with a plurality of virtual electrodes 181 in a direction perpendicular to the substrate 12, and the virtual electrodes 181 are electrically connected to the first touch electrodes 1410 overlapping with the first touch electrodes 181 in the direction perpendicular to the substrate 12 through third vias 143, so as to have the same potential as the first touch electrodes 1410, and are not used for display control. When the external electrostatic charge entering the display panel from the hollow portion 10 is too large, the thin film transistor T corresponding to the dummy electrode 181 not used for display control is broken down first, and at this time, the display panel can still display normally. In order to more intuitively illustrate the technical solution of the present application, only the planar structure of the pixel electrode layer 18 and the first touch electrode 1410 in the first non-display area B1 is illustrated in the planar structure diagram shown in fig. 11.
The invention also provides a display device which comprises the display panel provided by the invention.
Referring to fig. 13, a display device 200 of the present embodiment includes the display panel 100 according to any one of the above embodiments of the present invention. Fig. 13 illustrates the display device 200 by taking a mobile phone as an example, and the camera can be placed and mounted in the hollow portion 10. It should be understood that the display device 200 provided in the embodiment of the present invention may also be other display devices with a display function, such as a liquid crystal panel, a television, a vehicle-mounted display device, and the present invention is not limited in this respect. The display device provided in the embodiment of the present invention has the beneficial effects of the display panel provided in the embodiment of the present invention, and specific reference may be made to the specific description of the display panel in each of the above embodiments, which is not repeated herein.
As can be seen from the above embodiments, the display panel and the display device provided by the present invention at least achieve the following beneficial effects:
1. by arranging the conducting ring, external static charges entering the display panel are led into the common electrode layer extended to the first non-display area, and then static electricity is released by the common electrode wire, so that the routing arrangement in the display panel is reduced, the external static charges cannot be accumulated in the hollow part, and the static protection performance of the display panel is improved;
2. the conducting ring is arranged in the first non-display area, so that the display effect of the display panel is not influenced while the display panel has good electrostatic protection performance, and the overall screen design is easier to realize;
3. the conducting ring and the semiconductor part of the thin film transistor are located on the same film layer, and additional film layers are not needed, so that the antistatic cost of the display panel is reduced, and the production efficiency of the display panel is improved.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (9)

1. A display panel, comprising:
the display device comprises a hollow-out part, a first non-display area, a display area and a second non-display area;
the first non-display area is arranged around the hollow-out part, the display area is arranged around the first non-display area, and the second non-display area is arranged around the display area;
the first non-display area comprises a conductive ring, and the conductive ring is arranged around the hollow part;
the display area comprises a thin film transistor layer and a common electrode layer; the thin film transistor layer comprises a plurality of thin film transistors arranged on a substrate, each thin film transistor comprises a semiconductor part, a grid electrode, a source electrode and a drain electrode, and the semiconductor part and the conducting ring are located on the same film layer;
the common electrode layer extends to the first non-display region and is electrically connected with the conductive ring;
the common electrode layer is electrically connected with the common electrode wire;
the display panel further comprises a pixel electrode layer, the pixel electrode layer comprises a plurality of virtual electrodes positioned in the first non-display area, and the virtual electrodes are electrically connected with the common electrode layer through third through holes;
the dummy electrode and the common electrode layer are overlapped in a direction perpendicular to the substrate base plate;
the first non-display area includes a plurality of dummy thin film transistors electrically connected to the dummy electrodes.
2. The display panel according to claim 1,
the conductive ring comprises a ring part and at least one tip part, and the ring part and the at least one tip part are integrally formed; the ring part is arranged around the hollow part and is electrically connected with the common electrode layer through at least one first through hole;
the at least one point portion is located on one side, close to the hollow portion, of the ring portion, and the tip of each point portion faces the hollow portion.
3. The display panel according to claim 2,
the width of the ring part is h1, the width of the tip part is h2, wherein h1 is more than or equal to h 2.
4. The display panel according to claim 1,
the common electrode line is positioned in the second non-display area;
the common electrode layer is planar, and in the direction perpendicular to the substrate base plate, the common electrode layer and the common electrode line are overlapped;
the common electrode layer is electrically connected with the common electrode line through a plurality of second via holes.
5. The display panel according to claim 4,
the common electrode wire, the source electrode and the drain electrode are located on the same film layer.
6. The display panel according to claim 1,
the common electrode layer comprises a plurality of common electrodes which are arranged in an array, the common electrodes are multiplexed as touch electrodes, and the common electrode wires are multiplexed as touch wires;
one of the touch electrodes is electrically connected to at least one of the touch lines and insulated from the rest of the touch lines.
7. The display panel according to claim 6,
and part of the touch control electrodes positioned in the first non-display area are first touch control electrodes, and at least one first touch control electrode is electrically connected with the conductive ring.
8. The display panel according to claim 7,
the second non-display area comprises an electrostatic protection circuit and a binding area, and the electrostatic protection circuit and the binding area are positioned on two opposite sides of the display area; the bonding region comprises a plurality of conductive pads;
one end of the touch line is electrically connected with the electrostatic protection circuit, and the other end of the touch line is electrically connected with the conductive bonding pad.
9. A display device characterized by comprising the display panel according to any one of claims 1 to 8.
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CN109460167B (en) * 2018-11-30 2022-04-12 厦门天马微电子有限公司 Display panel and display device
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