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CN113410269A - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN113410269A
CN113410269A CN202110621121.8A CN202110621121A CN113410269A CN 113410269 A CN113410269 A CN 113410269A CN 202110621121 A CN202110621121 A CN 202110621121A CN 113410269 A CN113410269 A CN 113410269A
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CN
China
Prior art keywords
display area
electrically connected
power supply
display panel
pixel circuit
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Granted
Application number
CN202110621121.8A
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Chinese (zh)
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CN113410269B (en
Inventor
伍黄尧
周洪波
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Wuhan Tianma Microelectronics Co Ltd
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Wuhan Tianma Microelectronics Co Ltd
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Priority to CN202110621121.8A priority Critical patent/CN113410269B/en
Publication of CN113410269A publication Critical patent/CN113410269A/en
Application granted granted Critical
Publication of CN113410269B publication Critical patent/CN113410269B/en
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    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/122Pixel-defining structures or layers, e.g. banks
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/123Connection of the pixel electrodes to the thin film transistors [TFT]
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/131Interconnections, e.g. wiring lines or terminals

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The invention discloses a display panel and a display device. The display panel includes: the display device comprises a first display area, a second display area and a non-display area; the first light-emitting elements are arranged in the first display area, and the second light-emitting elements are arranged in the second display area; the display device comprises a first pixel circuit and a second pixel circuit, wherein the first pixel circuit is correspondingly and electrically connected with at least one first light-emitting element, the second pixel circuit is correspondingly and electrically connected with at least one second light-emitting element, and the second pixel circuit is positioned in a second display area; and the power line comprises a first power supply structure and a second power supply structure which are electrically connected with each other, the first power supply structure is electrically connected with the first pixel circuit, the second power supply structure is electrically connected with the second pixel circuit, and at least one side of the first power supply structure is disconnected with the second power supply structure. According to the display panel provided by the embodiment of the invention, the occupied area of the power line at the local position of the display panel is reduced, and other circuit structures are convenient to arrange.

Description

Display panel and display device
Technical Field
The invention relates to the field of display, in particular to a display panel and a display device.
Background
In electronic devices including display panels, the pursuit of a high screen ratio with a better visual experience has become one of the trends in the development of current display technologies.
Taking a mobile phone, a tablet computer, etc. as an example, in the current full-screen scheme, the display panel includes a first display area and a second display area, wherein the first display area is reused as a photosensitive element integration area. At this time, the photosensitive element such as the front camera and the infrared sensing element may be disposed at the back of the first display area of the display panel, and the light can pass through the first display area to reach the photosensitive element, thereby realizing corresponding functions such as front camera shooting and infrared sensing.
In the above solution, the plurality of signal lines are disposed in both the first display area and the second display area, and some signal lines in the first display area and some signal lines in the second display area need to be electrically connected, so that the wiring structure near the boundary between the first display area and the second display area needs to occupy a large space, and it is difficult to design the wiring.
Disclosure of Invention
The invention provides a display panel and a display device, which can reduce the occupied area of a power line at the local position of the display panel and facilitate the arrangement of other circuit structures.
In one aspect, an embodiment of the present invention provides a display panel, which includes: the display device comprises a first display area, a second display area and a non-display area, wherein the second display area at least partially surrounds the first display area; the display device comprises a first light emitting element and a second light emitting element, wherein the first light emitting element is arranged in a first display area, and the second light emitting element is arranged in a second display area; the display device comprises a first pixel circuit and a second pixel circuit, wherein the first pixel circuit is correspondingly and electrically connected with at least one first light-emitting element, the second pixel circuit is correspondingly and electrically connected with at least one second light-emitting element, and the second pixel circuit is positioned in a second display area; and the power line comprises a first power supply structure and a second power supply structure which are electrically connected with each other, the first power supply structure is electrically connected with the first pixel circuit, the second power supply structure is electrically connected with the second pixel circuit, and at least one side of the first power supply structure is disconnected with the second power supply structure.
In another aspect, an embodiment of the present invention provides a display device, which includes the display panel according to any one of the foregoing embodiments.
According to the display panel of the embodiment of the invention, the power line comprises a first power supply structure electrically connected with the first pixel circuit and a second power supply structure electrically connected with the second pixel circuit. At least one side of the first power supply structure is disconnected from the second power supply structure and the other side is electrically connected with the second power supply structure. At least one side of the first power supply structure and the second power supply structure is provided with a power line, the power line does not occupy the space of the display panel, so that the area is free of wiring space, and other circuit structures are convenient to arrange, such as arrangement of more first pixel circuits and independent driving of more first light-emitting elements are realized.
Drawings
Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.
FIG. 1 is a schematic top view of a display panel according to an embodiment of the present invention;
FIG. 2 is an enlarged partial schematic view of the area Q1 of FIG. 1;
FIG. 3 is another enlarged partial schematic view of the area Q1 of FIG. 1;
FIG. 4 is a schematic top view of a display panel according to another embodiment of the present invention;
FIG. 5 is an enlarged partial schematic view of the area Q2 of FIG. 4;
FIG. 6 is another enlarged partial schematic view of the area Q2 of FIG. 4;
FIG. 7 is a schematic top view of a display panel according to another embodiment of the present invention;
FIG. 8 is an enlarged partial schematic view of the area Q3 of FIG. 7;
FIG. 9 is a schematic top view of a display panel according to another embodiment of the present invention;
FIG. 10 is an enlarged partial schematic view of the area Q4 of FIG. 9;
FIG. 11 is another enlarged partial schematic view of the area Q4 of FIG. 9;
FIG. 12 is a schematic top view of a display panel according to another embodiment of the present invention;
FIG. 13 is an enlarged partial schematic view of the area Q5 of FIG. 12;
FIG. 14 is a schematic top view of a display panel according to another embodiment of the present invention;
FIG. 15 is an enlarged partial schematic view of the area Q6 of FIG. 14;
FIG. 16 is a schematic top view of a display panel according to another embodiment of the present invention;
FIG. 17 is an enlarged partial schematic view of the area Q7 of FIG. 16;
FIG. 18 is a schematic top view of a display panel according to another embodiment of the invention;
FIG. 19 is an enlarged partial schematic view of the area Q8 of FIG. 18;
FIG. 20 is a schematic top view of a display panel according to another embodiment of the present invention;
FIG. 21 is an enlarged, fragmentary view of the area Q9 of FIG. 20;
fig. 22 is a circuit diagram of a first pixel circuit or a second pixel circuit in a display panel according to yet another embodiment of the invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.
An embodiment of the invention provides a display panel, fig. 1 is a schematic top view of the display panel provided according to an embodiment of the invention, and fig. 2 and 3 are schematic partial enlarged views of a region Q1 in fig. 1.
The display panel 100 includes a first display area DA1, a second display area DA2, and a non-display area NA. The second display area DA2 at least partially surrounds the first display area DA 1. The non-display area NA at least partially surrounds the first display area DA1 and the second display area DA 2. The light transmittance of the first display area DA1 is greater than that of the second display area DA 2.
The display panel 100 includes a first light emitting element 111, a second light emitting element 112, a first pixel circuit 121, a second pixel circuit 122, and a power line 130. The first light emitting elements 111 are arranged in the first display area DA1, and the second light emitting elements 112 are arranged in the second display area DA 2. The first pixel circuit 121 is electrically connected to at least one first light emitting element 111, and the second pixel circuit 122 is electrically connected to at least one second light emitting element 112, wherein the second pixel circuit 122 is located in the second display area DA 2.
The power line 130 includes a first power supplying structure 131 and a second power supplying structure 132 electrically connected to each other. The first power supplying structure 131 is electrically connected to the first pixel circuit 121. The second power supply structure 132 is electrically connected to the second pixel circuit 122. In the present embodiment, at least one side of the first power supplying structure 131 is disconnected from the second power supplying structure 132.
In the embodiment shown in fig. 1 to 3, the first pixel circuits 121 are disposed in the first display area DA 1. At this time, the first power supplying structure 131 is disposed in the first display area DA1, and the second power supplying structure 132 is disposed in the second display area DA 2. However, the position of the first pixel circuit 121 and the position of the first power supply structure 131 are not limited to the above example, and may be other arrangements, which will be exemplified in other embodiments later.
According to the display panel 100 of the embodiment of the invention, the power line 130 includes the first power supplying structure 131 electrically connected to the first pixel circuit 121, and the second power supplying structure 132 electrically connected to the second pixel circuit 122. At least one side of the first power supplying structure 131 is disconnected from the second power supplying structure 132, and the other side is electrically connected to the second power supplying structure 132. At the above-mentioned at least one side of the first and second power supplying structures 131 and 132, the power line 130 does not occupy the space of the display panel 100, thereby leaving a wiring space in the region, facilitating the arrangement of other circuit structures, such as the arrangement of more first pixel circuits 121, and the independent driving of a greater number of first light emitting elements 111.
In the embodiment of the invention, the display panel 100 is an Organic Light Emitting Diode (OLED) display panel, that is, the first Light Emitting element 111 and the second Light Emitting element 112 are OLED Light Emitting elements. It is understood that the display panel 100 of the embodiment of the invention may also be other self-luminous display panels capable of being driven in an Active Matrix (AM) manner similar to the OLED display panel.
In this embodiment, the term "pixel circuit" refers to a minimum repeating unit of a circuit structure that drives a corresponding light emitting element to emit light, and the pixel circuit may be a 2T1C circuit, a 7T1C circuit, a 7T2C circuit, or the like. Herein, the "2T 1C circuit" means that the pixel circuit is a pixel circuit including 2 thin film transistors (T) and 1 capacitor (C), and the other "7T 1C circuits", "7T 2C circuits", and the like.
Fig. 4 is a schematic top view of a display panel according to another embodiment of the present invention, and fig. 5 and 6 are schematic partial enlarged views of a region Q2 in fig. 4. The display panel 100 includes a first display area DA1, a second display area DA2, and a non-display area NA. The first light emitting elements 111 are arranged in the first display area DA1, and the second light emitting elements 112 are arranged in the second display area DA 2. The first pixel circuit 121 is electrically connected to at least one first light emitting element 111, and the second pixel circuit 122 is electrically connected to at least one second light emitting element 112. The power line 130 includes a first power supplying structure 131 and a second power supplying structure 132 electrically connected to each other.
In this embodiment, the display panel 100 further includes a third display area DA3, a third light emitting element 113, and a third pixel circuit 123. The third display area DA3 is disposed between the first display area DA1 and the second display area DA 2. The third light emitting elements 113 are arranged in the third display area DA 3. The third pixel circuit 123 is electrically connected to at least one third light emitting element 113. The third pixel circuit 123 is electrically connected to the first power supply structure 131.
In the present embodiment, the first pixel circuit 121 and the third pixel circuit 123 are arranged in the third display area DA 3. The first power supplying structure 131 is disposed in the third display area DA 3. The second power supplying structure 132 is disposed in the second display area DA 2. In the present embodiment, the first pixel circuits 121 for driving the first light emitting elements 111 are arranged in the third display area DA3, and no pixel circuit is disposed in the first display area DA1, so that the first display area DA1 has fewer circuit structures, thereby having higher light transmittance. The first display area DA1 may be either display or transmissive so as to be an integrated area of photosensitive elements provided on the non-display surface side of the first display area DA 1.
In this embodiment, an example will be described in which one first light emitting element 111 is connected to each first pixel circuit 121, one second light emitting element 112 is connected to each second pixel circuit 122, and one third light emitting element 113 is connected to each third pixel circuit 123. However, the correspondence relationship between the first pixel circuits 121 and the first light emitting elements 111, the correspondence relationship between the second pixel circuits 122 and the second light emitting elements 112, and the correspondence relationship between the third pixel circuits 123 and the third light emitting elements 113 may not be limited thereto, and for example, each of the first pixel circuits 121 may be electrically connected to two, three, four, or other numbers of the first light emitting elements 111 so that each of the first pixel circuits 121 may simultaneously drive a corresponding number of the first light emitting elements 111 of the same color to emit light.
Alternatively, the third display area DA3 has a first side S1 and a second side S2 opposite to each other along the first direction X, and the distance from the first side S1 to the corresponding side non-display area NA is less than the distance from the second side S2 to the corresponding side non-display area NA along the first direction X, and the first power supplying structure 131 is disconnected from the second power supplying structure 132 at the second side S2. Alternatively, at least one side of the first power supplying structure 131 in the second direction Y, which crosses the first direction X, is electrically connected to the second power supplying structure 132. For example, in the present embodiment, the first power supplying structure 131 is electrically connected to the second power supplying structure 132 at a side facing away from the first display area DA1 along the second direction Y. In some other embodiments, the first power supply structure 131 may be electrically connected to the second power supply structure 132 indirectly via other conductive structures. The first power supplying structure 131 is disconnected from the second power supplying structure 132 at the second side S2, and particularly, the first power supplying structure 131 is disconnected from the second power supplying structure 132 near the second side S2.
The power line 130 is disposed at least in the second display area DA2 and the third display area DA3, and when current is transmitted through the power line 130, a voltage drop is easily generated along the current transmission direction. According to the display panel 100 of the above embodiment, the second side S2 of the third display area DA3 is farther from the non-display area NA, the disconnection position between the first power supply structure 131 and the second power supply structure 132 is set at the second side S2, and the other side of the first power supply structure 131 can be electrically connected to the second power supply structure 132 or the power supply source, so that the voltage drop on the first power supply structure 131 can be almost ignored, the influence of the disconnection position on the voltage on the first power supply structure 131 is reduced, the uniformity of the power supply signal to the pixel circuit of each display area is improved, and the display panel 100 has a better display effect.
In the above embodiment, the first side S1 is adjacent to the non-display area NA along the first direction X, i.e. the distance from the first side S1 to the corresponding side non-display area NA is 0, which facilitates further reducing the adverse effect of the voltage drop on the first power supplying structure 131. However, the positional relationship of the first display area DA1, the third display area DA3, and the second display area DA2 may not be limited to the above example, but may be other cases.
Fig. 7 is a schematic top view of a display panel according to another embodiment of the present invention, and fig. 8 is a schematic partial enlarged view of a region Q3 in fig. 7. In the present embodiment, the third display area DA3 is not adjacent to the non-display area NA. As shown in fig. 7, the third display area DA3 has a first side S1 and a second side S2 opposite to each other along the first direction X, and a distance D1 from the first side S1 to the corresponding side non-display area NA is less than a distance D2 from the second side S2 to the corresponding side non-display area NA along the first direction X. As shown in fig. 8, the first power supplying structure 131 is disconnected from the second power supplying structure 132 at the second side S2. Optionally, the first power supplying structure 131 is electrically connected with the second power supplying structure 132 at the first side S1. Since the second side S2 is farther from the non-display area NA, the disconnection of the first power supplying structure 131 from the second power supplying structure 132 at the second side S2 can maximally reduce the influence of the disconnection on the voltage on the first power supplying structure 131.
Fig. 9 is a schematic top view of a display panel according to still another embodiment of the present invention, and fig. 10 and 11 are enlarged partial schematic views of a region Q4 in fig. 9. In the present embodiment, the third display area DA3 includes a driving circuit area CA and a buffer area FA.
The driving circuit area CA is located at least one side of the first display area DA1 along a second direction Y, which crosses the first direction X. The buffer area FA is located at least one side of the first display area DA1 and the driving circuit area CA along the first direction X. In this embodiment, the driving circuit area CA is provided with a first pixel circuit 121 and a third pixel circuit 123. In some embodiments, some of the signal lines in the third display area DA3 need to be connected with the signal lines in the second display area DA2 in the first direction X. The first pixel circuit 121 and the third pixel circuit 123 are disposed in the driving circuit area CA, and the third display area DA3 includes a buffer area FA disposed between the second display area DA2 and the driving circuit area CA, which may be used to arrange a wiring structure of a part of signal lines connecting the third display area DA3 and the second display area DA2, thereby facilitating signal transmission to the first pixel circuit 121 and the third pixel circuit 123 in the third display area DA 3.
As described above, the third display area DA3 has the first side S1 and the second side S2 opposite to each other along the first direction X, and the distance from the first side S1 to the corresponding side non-display area NA along the first direction X is smaller than the distance from the second side S2 to the corresponding side non-display area NA. Optionally, the buffer area FA is disposed on the second side S2, and the first power supply structure 131 is disconnected from the second power supply structure 132 at the buffer area FA. At this time, the power line 130 leaves a wiring space in the buffer FA, so that the wiring structure of the power line 130 and other signal lines disposed in the buffer FA are prevented from interfering with each other, the degree of freedom for disposing other signal lines in the buffer FA is facilitated, and the difficulty in designing the wiring structure is reduced.
As shown in fig. 9 to 11, optionally, the display panel 100 further includes a plurality of first data lines 140. Each of the first data lines 140 includes a first sub data line 141, a second sub data line 142, and a fan-out sub data line 143. The first sub data lines 141 extend along the first direction X to the driving circuit area CA and are electrically connected to the plurality of first pixel circuits 121. The second sub data lines 142 extend in the first direction X in the second display area DA2 and are electrically connected to the plurality of second pixel circuits 122. The fan-out sub data line 143 extends to the buffer FA and is electrically connected to the first sub data line 141 and the second sub data line 142. In the present embodiment, by providing the fan-out sub-data line 143 located in the buffer area FA, the plurality of first sub-data lines 141 in the driving circuit area CA and the plurality of second sub-data lines 142 in the second display area DA2 can be electrically connected correspondingly, so that one row of first pixel circuits 121 in the third display area DA3 and one row of second pixel circuits 122 in the second display area DA2 share one first data line 140 correspondingly, and the first data line 140 is used for transmitting a data signal for controlling the gray scale of the light emitting element, thereby realizing the supply of the data signal of the first pixel circuit 121. Since the first power supplying structure 131 is disconnected from the second power supplying structure 132 in the buffer area FA, more wiring space can be left, which facilitates the arrangement of the fan-out sub-data lines 143 in the buffer area FA. Compared to the display panel in which the power line 130 is still disposed in the buffer area FA, the wiring structure in the buffer area FA in the display panel 100 of the present embodiment is more simplified, thereby facilitating reduction of the width of the buffer area FA along the first direction X.
As shown in fig. 9 to 11, optionally, the display panel 100 further includes a plurality of second data lines 150. Each of the second data lines 150 extends in the first direction X in the second display area DA2 and the third display area DA 3. Each second data line 150 is electrically connected to a plurality of third pixel circuits 123 and a plurality of second pixel circuits 122, so that one column of third pixel circuits 123 in the third display area DA3 and one column of second pixel circuits 122 in the second display area DA2 share one second data line 150, and the second data line 150 is used for transmitting data signals for controlling gray scales of light-emitting elements, thereby realizing the supply of the data signals of the third pixel circuits 123. The second data line 150 also extends through the buffer FA, and since the first power supply structure 131 is disconnected from the second power supply structure 132 at the buffer FA, more wiring space can be left, which facilitates the arrangement of the second data line 150 at the buffer FA.
Fig. 12 is a schematic top view of a display panel according to still another embodiment of the present invention, and fig. 13 is a schematic partial enlarged view of a region Q5 in fig. 12. In the present embodiment, the first power supplying structure 131 is electrically connected to the second power supplying structure 132 at the first side S1. Since the second side S2 is farther from the non-display area NA, the disconnection of the first power supplying structure 131 from the second power supplying structure 132 at the second side S2 can maximally reduce the influence of the disconnection on the voltage on the first power supplying structure 131. Optionally, the first side S1 is adjacent to the non-display area NA along the first direction X.
Specifically, as shown in fig. 13, the power line 130 further includes a third power supplying structure 133, and the third power supplying structure 133 is disposed in the non-display area NA. The first power supplying structure 131 is electrically connected to the third power supplying structure 133 at the first side S1. The third power supply structure 133 is electrically connected to the second power supply structure 132. In some embodiments, the second power supplying structure 132 is connected to the third power supplying structure 133 at the boundary of the second display area DA2 and the non-display area NA. In some embodiments, the third power supplying structure 133 is disposed at least partially around the first, second, and third display areas DA1, DA2, DA3 in the non-display area NA. In some embodiments, the third power supply structure 133 is electrically connected to a power supply source such that the power line 130 receives a power signal from the power supply source. In one example, the third power supply structure 133 is electrically connected to a driving chip of the display panel 100 such that the power line 130 receives a power signal from the driving chip. By providing the third power supplying structure 133, the first power supplying structure 131 is indirectly electrically connected with the second power supplying structure 132 at the first side S1, that is, electrically connected via the third power supplying structure 133, so that a power signal can be transmitted from the first side S1 to the first power supplying structure 131, when the area of the first display area DA1 or the third display area DA3 is smaller than that of the second display area DA2, even if the first power supplying structure 131 is disconnected from the second power supplying structure 132 at the second side S2, the voltage drop on the first power supplying structure 131 is almost negligible, the influence of the disconnected part on the voltage on the first power supplying structure 131 is reduced, and the uniformity of the power signal to the pixel circuits of each display area is improved.
Fig. 14 is a schematic top view of a display panel according to another embodiment of the present invention, and fig. 15 is a partially enlarged schematic view of a region Q6 in fig. 14. In the present embodiment, the driving circuit area CA has the third side S3 and the fourth side S4 opposite to each other. The third side S3 is adjacent to the first display area DA1, and the fourth side S4 is adjacent to the second display area DA2, wherein the first power supplying structure 131 is electrically connected to the second power supplying structure 132 at the fourth side S4. When the first power supplying structure 131 is disconnected from the second power supplying structure 132 at the second side S2, it can still be ensured that the first power supplying structure 131 is electrically connected with the second power supplying structure 132, and the problem that the first power supplying structure 131 receives the power supply signal is solved.
As shown in fig. 14 and 15, in some embodiments, the plurality of first pixel circuits 121 and the plurality of third pixel circuits 123 are arranged in the array in the driving circuit area CA as a plurality of row units RL each including the plurality of first pixel circuits 121 and the plurality of third pixel circuits 123 arranged in the second direction Y and a plurality of column units CL each including the plurality of first pixel circuits 121 arranged in the first direction X or including the plurality of third pixel circuits 123 arranged in the first direction X.
In the embodiment related to fig. 15, each row unit RL includes both the first pixel circuit 121 and the third pixel circuit 123, and the first pixel circuit 121 and the third pixel circuit 123 are arranged in the second direction Y. In the embodiment related to fig. 15, some of the column cells CL include the first pixel circuits 121, a plurality of the first pixel circuits 121 are arranged in the first direction X, some of the column cells CL include only the third pixel circuits 123, and a plurality of the third pixel circuits 123 are arranged in the first direction X. However, the kinds of pixel circuits in the row unit RL and the kinds of pixel circuits in the column unit CL may not be limited to the above examples, and other cases may be possible. In some embodiments, each row unit RL may further include a dummy pixel circuit. In some embodiments, some of the column cells CL may include both the first pixel circuit 121 and the third pixel circuit 123, and optionally, some of the column cells CL may further include a dummy pixel circuit. The dummy pixel circuit may be a pixel circuit having a circuit structure the same as or similar to that of the first pixel circuit 121 or the third pixel circuit 123 and not electrically connected to the light emitting element.
As shown in fig. 14 and 15, in some embodiments, the first power supply structure 131 includes a plurality of first sub power lines 131a, each of the first sub power lines 131a extending along the first direction X, wherein each M column cells CL are electrically connected to the same first sub power line 131a, and M is a positive integer. For example, in the present embodiment, M is 1, that is, each column unit CL is electrically connected to a corresponding one of the first sub-power lines 131a, and at this time, the first power supply structure 131 includes a larger number of first sub-power lines 131a, so as to reduce the voltage drop of the first power supply structure 131.
In some embodiments, the first power supply structure 131 further includes at least one second sub power line 131b, each second sub power line 131b extends along the second direction Y, and each second sub power line 131b is electrically connected to one row unit RL. In this embodiment, the number of the second sub power lines 131b is the same as the number of the row units RL, and the second sub power lines 131b are connected to the row units RL in a one-to-one correspondence, at this time, the first power supply structure 131 includes a larger number of the second sub power lines 131b, so as to reduce the voltage drop of the first power supply structure 131.
Fig. 16 is a schematic top view of a display panel according to another embodiment of the present invention, and fig. 17 is a partially enlarged schematic view of a region Q7 in fig. 16. Each M column cells CL is electrically connected to the same first sub-power line 131a, and M is a positive integer. In the present embodiment, each two column cells CL are electrically connected to the same first sub power line 131a, i.e., M is 2. At this time, each of the first sub power supply lines 131a simultaneously supplies a power supply signal to two column cells CL, and optionally, the first sub power supply line 131a is disposed between the adjacent two column cells CL. According to the display panel 100 of the present embodiment, the number of the first sub power lines 131a included in the first power supply structure 131 is appropriately reduced, while ensuring that the power supply signals can be transmitted to all the column units CL, the space occupation of the wiring structure of the power line 130 in the third display area DA3 is reduced, thereby making more wiring space vacant, facilitating the arrangement of more first pixel circuits 121 and third pixel circuits 123, and realizing the independent driving of more first light emitting elements 111 and third light emitting elements 113.
Fig. 18 is a schematic top view of a display panel according to still another embodiment of the present invention, and fig. 19 is a partially enlarged schematic view of a region Q8 in fig. 18. In this embodiment, the first power supply structure 131 includes a plurality of first sub power lines 131a and at least one second sub power line 131 b. Each first sub power line 131a extends along the first direction X, wherein each M column cells CL are electrically connected to the same first sub power line 131a, and M is a positive integer. Each of the second sub power supply lines 131b extends in the second direction Y, and each of the second sub power supply lines 131b is electrically connected to one of the row units RL.
In some embodiments, along the first direction X, one second sub power line 131b is disposed every N row units RL, where N is a positive integer. For example, in the present embodiment, one second sub power line 131b is provided every other row unit RL, that is, each second sub power line 131b passes through one row unit RL, and a complete row unit RL is provided between two adjacent second sub power lines 131 b. In other embodiments, N may be 2, 3, or other positive integers. According to the display panel 100 of the present embodiment, the number of the second sub power supply lines 131b included in the first power supply structure 131 is appropriately reduced, and the space occupation of the wiring structure of the power supply line 130 in the third display area DA3 is further reduced, thereby leaving more wiring space free, and further allowing more pixel circuits to be arranged in the third display area DA 3.
In some embodiments, the second sub power line 131b and the first sub power line 131a are respectively located in different wiring layers of the display panel 100, so as to avoid interference of a mesh structure formed when the second sub power line 131b and the first sub power line 131a are in the same layer with other signal lines and avoid influence on the wiring of other signal lines.
As shown in fig. 18 and 19, in some embodiments, the second power supply structure 132 includes a plurality of third sub power lines 132a and a plurality of fourth sub power lines 132 b. Each third sub power line 132a extends along the first direction X, and each fourth sub power line 132b extends along the second direction Y, wherein at least one second sub power line 131b is electrically connected to at least one fourth sub power line 132b, thereby electrically connecting the first power supply structure 131 to the second power supply structure 132.
Fig. 20 is a schematic top view of a display panel according to still another embodiment of the present invention, and fig. 21 is a partially enlarged schematic view of a region Q9 in fig. 20. In some embodiments, the at least one first pixel circuit 121 includes a first node N1 for transmitting a driving current to the first light emitting element 111, the first node N1 is located at one side of the first pixel circuit 121, and the first node N1 is electrically connected to the first light emitting element 111 through a connection line NL. The second pixel circuit 122 includes a second node N2 for transmitting a driving current to the second light emitting element 112, and the second node N2 is located at one side of the second pixel circuit 122. In fig. 21, the second node N2 of a part of the second pixel circuits 122 is shown, and the second nodes N2 of the remaining second pixel circuits 122 are similarly located. In some embodiments, in the first pixel circuit 121 and the second pixel circuit 122 arranged along the first direction X, the first node N1 is disposed opposite to or opposite to the second node N2.
Fig. 22 is a circuit diagram of a first pixel circuit or a second pixel circuit in a display panel according to yet another embodiment of the invention. The first pixel circuit 121 and the second pixel circuit 122 are 7T1C circuits, for example. The pixel circuit includes first to seventh transistors M1, M2, M3, M4, M5, M6, M7, and a storage capacitor Cst. In fig. 22, the predetermined node Nx is located between the sixth transistor M6 and the anode of the predetermined light emitting element 11 x. For the first pixel circuit 121, the light emitting element 11x, i.e., the first light emitting element 111, is preset, and the node Nx, i.e., the first node N1, is preset. For the second pixel circuit 122, the light emitting element 11x, i.e., the second light emitting element 112, is preset, and the node Nx, i.e., the second node N2, is preset.
As shown in fig. 21, in the first pixel circuit 121, the first node N1 is disposed away from the second side S2 in the present embodiment. At this time, the connection line NL extends on a side of the first pixel circuit 121 facing away from the second side S2, so that the occupation of space between the first pixel circuit 121 and the second display area DA2 by the connection line NL is reduced, for example, the occupation of space between the buffer area FA and the connection line NL can be reduced, so that the intersection between other signal lines such as data lines and the connection line NL is reduced, facilitating the arrangement of the other signal lines or the pixel circuits.
The embodiment of the invention also provides a display device, and the display device is an electronic device with a display function, such as a mobile phone, a tablet computer and the like. The display device includes the display panel 100 of any of the foregoing embodiments. The display panel 100 includes a first display area DA1, a second display area DA2, and a non-display area NA. The second display area DA2 at least partially surrounds the first display area DA 1. The non-display area NA at least partially surrounds the first display area DA1 and the second display area DA 2. The light transmittance of the first display area DA1 is greater than that of the second display area DA 2. The display panel 100 includes a first light emitting element 111, a second light emitting element 112, a first pixel circuit 121, a second pixel circuit 122, and a power line 130. The first light emitting elements 111 are arranged in the first display area DA1, and the second light emitting elements 112 are arranged in the second display area DA 2. The first pixel circuit 121 is electrically connected to at least one first light emitting element 111, and the second pixel circuit 122 is electrically connected to at least one second light emitting element 112, wherein the second pixel circuit 122 is located in the second display area DA 2.
The power line 130 includes a first power supplying structure 131 and a second power supplying structure 132 electrically connected to each other. The first power supplying structure 131 is electrically connected to the first pixel circuit 121. The second power supply structure 132 is electrically connected to the second pixel circuit 122. In the present embodiment, at least one side of the first power supplying structure 131 is disconnected from the second power supplying structure 132.
According to the display device of the embodiment of the invention, the power line 130 of the display panel 100 includes the first power supplying structure 131 electrically connected to the first pixel circuit 121, and the second power supplying structure 132 electrically connected to the second pixel circuit 122. At least one side of the first power supplying structure 131 is disconnected from the second power supplying structure 132, and the other side is electrically connected to the second power supplying structure 132. At the above-mentioned at least one side of the first and second power supplying structures 131 and 132, the power line 130 does not occupy the space of the display panel 100, thereby leaving a wiring space in the region, facilitating the arrangement of other circuit structures, such as the arrangement of more first pixel circuits 121, and the independent driving of a greater number of first light emitting elements 111.
In accordance with the above embodiments of the present invention, these embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. The invention is limited only by the claims and their full scope and equivalents.

Claims (21)

1. A display panel, comprising:
the display device comprises a first display area, a second display area and a non-display area, wherein the second display area at least partially surrounds the first display area, the non-display area at least partially surrounds the first display area and the second display area, and the light transmittance of the first display area is greater than that of the second display area;
the first light-emitting elements are arranged in the first display area, and the second light-emitting elements are arranged in the second display area;
the first pixel circuit is correspondingly and electrically connected with at least one first light-emitting element, the second pixel circuit is correspondingly and electrically connected with at least one second light-emitting element, and the second pixel circuit is positioned in the second display area; and
a power line including a first power supply structure and a second power supply structure electrically connected to each other, the first power supply structure being electrically connected to the first pixel circuit, the second power supply structure being electrically connected to the second pixel circuit,
wherein at least one side of the first power supplying structure is disconnected from the second power supplying structure.
2. The display panel according to claim 1, further comprising:
the third display area is arranged between the first display area and the second display area;
third light emitting elements arranged in the third display region; and
a third pixel circuit electrically connected to at least one of the third light emitting elements, the third pixel circuit being electrically connected to the first power supply structure,
the first pixel circuit and the third pixel circuit are arranged in the third display area, the first power supply structure is arranged in the third display area, and the second power supply structure is arranged in the second display area.
3. The display panel according to claim 2, wherein the third display region has a first side and a second side opposite to each other along a first direction, and wherein a distance from the first side to the non-display region of the corresponding side along the first direction is smaller than a distance from the second side to the non-display region of the corresponding side, and the first power supply structure is disconnected from the second power supply structure at the second side.
4. The display panel according to claim 3, wherein the third display region comprises:
the driving circuit area is positioned on at least one side of the first display area along a second direction, and the second direction is crossed with the first direction; and
a buffer area located at least one side of the first display area and the driving circuit area along a first direction,
the driving circuit region is provided with the first pixel circuit and the third pixel circuit.
5. The display panel according to claim 4, wherein the buffer area is disposed at the second side, and the first power supply structure is disconnected from the second power supply structure at the buffer area.
6. The display panel according to claim 4, further comprising:
each first data line comprises a first sub data line, a second sub data line and a fan-out sub data line, the first sub data line extends to the driving circuit area along the first direction and is electrically connected with the first pixel circuits, the second sub data line extends to the second display area along the first direction and is electrically connected with the second pixel circuits, and the fan-out sub data line extends to the buffer area and is electrically connected with the first sub data line and the second sub data line.
7. The display panel according to claim 2, further comprising:
each second data line extends in the second display area and the third display area along the first direction, and is electrically connected with the third pixel circuits and the second pixel circuits.
8. The display panel of claim 3, wherein the first power supplying structure is electrically connected to the second power supplying structure at the first side.
9. The display panel according to claim 3, wherein the first side is adjacent to the non-display region in the first direction.
10. The display panel of claim 9, wherein the power line further comprises a third power supplying structure disposed in the non-display area, wherein the first power supplying structure is electrically connected to the third power supplying structure at the first side, and wherein the third power supplying structure is electrically connected to the second power supplying structure.
11. The display panel of claim 4, wherein the driving circuit area has a third side and a fourth side opposite to each other, the third side being adjacent to the first display area, the fourth side being adjacent to the second display area,
wherein the first power providing structure is electrically connected to the second power providing structure at the fourth side.
12. The display panel according to claim 4, wherein a plurality of the first pixel circuits and a plurality of the third pixel circuits are arranged in the array of the driving circuit regions as a plurality of row units and a plurality of column units, each of the row units includes a plurality of the first pixel circuits and a plurality of the third pixel circuits arranged in the second direction, and each of the column units includes a plurality of the first pixel circuits arranged in the first direction or includes a plurality of the third pixel circuits arranged in the first direction.
13. The display panel according to claim 12, wherein the first power supply structure includes a plurality of first sub power supply lines each extending in the first direction,
and each M column units are electrically connected with the same first sub power line, and M is a positive integer.
14. The display panel according to claim 13, wherein each two of the column units are electrically connected to the same one of the first sub power supply lines.
15. The display panel according to claim 13, wherein the first power supply structure further comprises at least one second sub power supply line, each of the second sub power supply lines extending along the second direction, each of the second sub power supply lines being electrically connected to one of the row units.
16. The display panel according to claim 15, wherein one of the second sub power lines is provided every N row units in the first direction, where N is a positive integer.
17. The display panel according to claim 15, wherein the second sub power supply line and the first sub power supply line are respectively located in different wiring layers of the display panel.
18. The display panel according to claim 15, wherein the second power supply structure includes a plurality of third sub power lines each extending in the first direction and a plurality of fourth sub power lines each extending in the second direction,
wherein at least one of the second sub power lines is electrically connected to at least one of the fourth sub power lines.
19. The display panel according to claim 3, wherein at least one of the first pixel circuits includes a first node for transmitting a driving current to the first light emitting element, the first node being located at one side of the first pixel circuit, the first node being electrically connected to the first light emitting element through a connection line,
the second pixel circuit includes a second node for transmitting a driving current to the second light emitting element, the second node being located at one side of the second pixel circuit,
in the first pixel circuit and the second pixel circuit arranged along the first direction, the first node and the second node are arranged in opposite directions or in a back-to-back direction.
20. The display panel according to claim 19, wherein the first node is provided away from the second side in the first pixel circuit.
21. A display device characterized by comprising the display panel according to any one of claims 1 to 20.
CN202110621121.8A 2021-06-03 2021-06-03 Display panel and display device Active CN113410269B (en)

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