CN111969027B - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN111969027B
CN111969027B CN202010888677.9A CN202010888677A CN111969027B CN 111969027 B CN111969027 B CN 111969027B CN 202010888677 A CN202010888677 A CN 202010888677A CN 111969027 B CN111969027 B CN 111969027B
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China
Prior art keywords
pixel
display
display area
sub
units
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CN111969027A (en
Inventor
许传志
谢正芳
张露
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Hefei Visionox Technology Co Ltd
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Hefei Visionox Technology Co Ltd
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Priority to CN202010888677.9A priority Critical patent/CN111969027B/en
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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
    • H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
    • H10K59/65—OLEDs integrated with inorganic image sensors
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The invention discloses a display panel and a display device, wherein the display panel is provided with at least one first display area, a second display area and a first transition display area, the light transmittance of the first display area is larger than that of the second display area, and the display panel comprises: a plurality of pixel units including a plurality of sub-pixels arranged along a first direction; a plurality of pixel circuit units including a plurality of pixel circuits arranged along a first direction; a plurality of first signal line units electrically connected to the pixel circuits in a corresponding one of the pixel circuit units, the first signal line units including a plurality of first signal line segments extending in a first direction and separated by a first display region; and the plurality of connecting line units are used for electrically connecting a plurality of first signal line segments corresponding to one first signal line unit, and the connecting line units extend outside the first display area. The display panel provided by the invention is convenient for the under-screen integration of at least two photosensitive assemblies, and improves the screen occupation ratio.

Description

Display panel and display device
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a display device.
Background
With the rapid development of electronic devices, the requirements of users on screen ratio are higher and higher, so that the full-screen display of the electronic devices is receiving more and more attention from the industry.
Traditional electronic devices such as mobile phones and tablet computers need to integrate functional components such as front-facing cameras, headphones and infrared sensing elements to meet diversified demands of users. However, the light transmittance of the electronic device in the prior art in, for example, the front camera area is poor, which is not beneficial to the under-screen integration of the front camera.
Disclosure of Invention
The invention provides a display panel and a display device, which are convenient for the under-screen integration of at least two photosensitive assemblies, improve the screen occupation ratio and are convenient for realizing the overall display of the display panel.
In one aspect, according to an embodiment of the present invention, there is provided a display panel having at least one first display region arranged at intervals along a first direction, a second display region located at least partially around each of the first display regions, and first transition display regions adjacent to both sides of the first display region along the first direction, the first display region having a light transmittance greater than that of the second display region, the display panel including: a plurality of first pixel units, each of which includes a plurality of sub-pixels arranged along a first direction, the plurality of first pixel units being arranged along a second direction intersecting the first direction, wherein the plurality of sub-pixels in each of the first pixel units includes a first sub-pixel located in a first display region, a second sub-pixel located in a second display region, and a third sub-pixel located in a first transition display region; the display device comprises a plurality of first pixel circuit units, a plurality of second pixel circuit units and a plurality of display units, wherein each first pixel circuit unit is used for driving sub-pixel display in a corresponding first pixel unit, each first pixel circuit unit comprises a plurality of pixel circuits arranged along a first direction, the plurality of first pixel circuit units are arranged along a second direction, each first pixel circuit unit comprises a first pixel circuit used for driving first sub-pixel display, a second pixel circuit used for driving second sub-pixel display and a third pixel circuit used for driving third sub-pixel display, the second pixel circuit is located in a second display area, and the first pixel circuit and the third pixel circuit are located in a first transition display area; a plurality of first signal line units, one first signal line unit electrically connected to the plurality of pixel circuits in a corresponding one of the first pixel circuit units, the first signal line unit including a plurality of first signal line segments extending in a first direction and separated by a first display region; and each connecting line unit is electrically connected with a plurality of first signal line segments in a corresponding first signal line unit, and extends outside the first display area.
According to an aspect of the embodiment of the present invention, the number of the first display areas is at least two, and a part of the number of the first signal line segments in the first signal line unit are located between two adjacent first display areas.
According to an aspect of the embodiment of the present invention, the connection line unit includes: the first connecting line segment extends along the second direction; and the second connecting line segment is electrically connected with the first connecting line segment and extends along the first direction, wherein the first connecting line segment and the second connecting line segment are manufactured in the same layer or the first connecting line segment and the second connecting line segment are connected through a through hole.
According to an aspect of the embodiment of the present invention, the number of first signal line segments spanned by the first connection line segments of the plurality of connection line units in the second direction is the same.
According to an aspect of an embodiment of the present invention, the first transitional display section includes a first boundary adjoining the first display section and a second boundary opposite the first boundary in the first direction, the first connection segment being disposed adjacent to the second boundary;
optionally, at least part of the first pixel circuit unit includes a first lead and a second lead, the first lead is connected between the first pixel circuit and the corresponding first sub-pixel, the second lead is connected between the third pixel circuit and the corresponding third sub-pixel, and the first lead and the second lead are respectively located at two sides of the first transition display area along the first direction.
According to an aspect of the embodiment of the present invention, the display panel further has a second transitional display area, the second transitional display area is located at a side of the first transitional display area away from the first display area along the first direction, the pixel density of the second transitional display area is the same as the pixel density of the first display area, and the first connection line segments of the plurality of connection line units are located at the second transitional display area and/or the first transitional display area and are disposed adjacent to the second boundary.
According to an aspect of the embodiment of the present invention, the second connection line segments of the plurality of connection line units are located at one side or both sides of the first display area along the second direction.
According to an aspect of the embodiment of the present invention, the display panel further has a non-display area surrounding the first display area and the second display area, and at least part of the second connection line segments in the connection line units are located in the non-display area; and/or the display panel is further provided with a third transition display area, the third transition display area is positioned between the first display area and the second display area and between the first transition display area and the second display area in the second direction, the pixel density of the third transition display area is the same as that of the first display area, and at least part of the second connecting line segments in the connecting line units are positioned in the third transition display area;
According to an aspect of an embodiment of the present invention, each connection line unit includes more than one first connection line segment between two adjacent first display regions;
optionally, the display panel further includes: the first signal lines extend along a first direction, and the first signal lines are arranged along a second direction, wherein the first connecting line segments and the first signal lines are arranged on different layers;
alternatively, the first signal line includes a reference voltage line, or a light emission control signal line, or a scan line.
According to an aspect of the embodiment of the present invention, the display panel further includes: a plurality of second pixel units, each including a plurality of sub-pixels arranged along the first direction; along the second direction, each second pixel unit is positioned between two first pixel units, wherein a plurality of sub-pixels in the second pixel units are second sub-pixels positioned in a second display area; a plurality of second pixel circuit units, each including a plurality of pixel circuits arranged along the first direction; each second pixel circuit unit is used for driving the sub-pixel display in a corresponding second pixel unit, wherein the plurality of pixel circuits in the second pixel circuit units are second pixel circuits positioned in a second display area; each second pixel circuit unit is independently corresponding to one first signal line unit, and one first signal line unit is electrically connected with a plurality of pixel circuits in the corresponding second pixel circuit unit;
Optionally, the distance between adjacent first sub-pixels in the first direction is twice the distance between adjacent second sub-pixels in the first direction, the distance between adjacent first sub-pixels in the second direction is twice the distance between adjacent second sub-pixels in the second direction, and the pixel arrangement structure formed by the plurality of first sub-pixels is the same as the pixel arrangement structure formed by the plurality of third sub-pixels;
optionally, part of the first sub-pixels, part of the second sub-pixels and part of the third sub-pixels are arranged in a row along the first direction, and the first pixel circuits corresponding to the first sub-pixels, the second pixel circuits corresponding to the second sub-pixels and the third pixel circuits corresponding to the third sub-pixels arranged in a row are electrically connected to the same first signal line unit.
In another aspect, an embodiment of the present invention provides a display device including a display panel according to any one of the embodiments described above.
According to the display panel and the display device provided by the embodiment of the invention, the display panel is provided with at least one first display area, a second display area and a first transition display area, and the light transmittance of the first display area is larger than that of the second display area, so that the display panel can integrate the photosensitive assemblies on the back surface of the first display area, the under-screen integration of the photosensitive assemblies of at least two cameras is realized, and meanwhile, the first display area can display pictures, the display area of the display panel is increased, and the overall screen design of the display device is realized.
The display panel of the embodiment of the invention comprises a plurality of first pixel units, a plurality of first pixel circuit units, a plurality of first signal line units and a plurality of connecting line units, wherein the plurality of first pixel units comprise a plurality of sub-pixels arranged along a first direction, and the plurality of first pixel circuit units comprise a plurality of pixel circuits arranged along the first direction, so that the pixel circuits are connected with the corresponding sub-pixels to drive the corresponding sub-pixels to emit light for display. The plurality of pixel circuits comprise a first pixel circuit positioned in the first transition display area, and the first pixel circuit is electrically connected with a first sub-pixel positioned in the first display area, so that the number of metal wiring wires in the first display area is effectively reduced, and the light transmittance of the first display area is effectively improved.
Further, each first signal line unit is electrically connected with a plurality of pixel circuits in a corresponding first pixel circuit unit, so that corresponding signals are transmitted to the pixel circuits through the first signal line units, and the sub-pixels connected with the first signal line units are driven to emit light for display through the pixel circuits. Since the display panel of the embodiment of the invention includes at least one first display area arranged at intervals along the first direction, in order to avoid the influence on the light transmittance of the first display area caused by wiring in the first display area, the signal lines extending along the first direction are disconnected at the first display area, and the first signal line segments in the first signal line units are located at two sides of the first display area along the first direction, if the wiring structure is not reasonably arranged, the loads of the first signal line segments located at two sides of the first display area are different, or when the first display area includes more than two first display areas, the first signal line segments between two adjacent first display areas cannot receive signals transmitted by the driving circuit, and partial sub-pixels located between the two adjacent first display areas are likely to be incapable of displaying. And the connecting wire unit extends outside the first display area, for example, part of the connecting wire unit can extend to the first transitional display area, so that the number of wires in the first display area is further reduced, and the light transmittance of the first display area is improved.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings, in which like reference characters designate the same or similar features, and in which the figures are not to scale.
FIG. 1 is a top view of a display panel according to an embodiment of the present invention;
FIG. 2 is an enlarged view at Q1 of FIG. 1;
FIG. 3 is an enlarged view at Q2 of FIG. 2;
FIG. 4 is a top view of a display panel according to another embodiment of the present invention;
fig. 5 is an enlarged view of one display panel shown in fig. 4 at Q3;
FIG. 6 is an enlarged view at Q4 of FIG. 5;
fig. 7 is an enlarged view of another display panel shown in fig. 4 at Q3;
FIG. 8 is a top view of a display panel according to still another embodiment of the present invention;
FIG. 9 is an enlarged view at Q5 of FIG. 8;
fig. 10 is a schematic diagram of the structure of a pixel circuit;
FIG. 11 is a schematic diagram of a display device according to an embodiment of the present invention;
fig. 12 is a sectional view in the direction B-B of fig. 11.
In the figure:
1000-a display device;
100-a display panel; AA 1-a first display area; AA 2-a second display area; NA-non-display area; TA1, a first transition display area; 01-a first boundary; 02-a second boundary; TA 2-a second transitional display region; TA 3-a third transition display region; s1-a first surface; s2-a second surface; x-a first direction; y-a second direction;
10-a first pixel unit; 11 a-a first subpixel; 11 b-a second subpixel; 11 c-a third subpixel; 11 d-fourth subpixel;
20-a first pixel circuit unit; 21 a-a first pixel circuit; 21 b-a second pixel circuit; 21 c-a third pixel circuit; 21 d-a fourth pixel circuit; 22 a-a first lead; 22 c-a second lead;
30-a first signal line unit; 31-a first signal line segment;
40-connecting line units; 41-a first connecting line segment; 42-a second connecting line segment; 43-via holes;
50-a second signal line;
60-a second pixel unit;
70-a second pixel circuit unit;
200-photosensitive assembly.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to illustrate the invention and are not configured to limit 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 invention by showing examples of the invention.
It is noted that relational terms such as first and second, and the like are 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. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
It will be understood that when a layer, an area, or a structure is described as being "on" or "over" another layer, another area, it can be referred to as being directly on the other layer, another area, or another layer or area can be included between the layer and the other layer, another area. And if the component is turned over, that layer, one region, will be "under" or "beneath" the other layer, another region.
Features and exemplary embodiments of various aspects of the invention are described in detail below. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In an electronic device such as a mobile phone and a tablet computer, it is necessary to integrate a photosensitive member such as a front camera, an infrared light sensor, a proximity light sensor, and the like on the side where the display panel is provided. In some embodiments, a transparent display area may be disposed on the electronic device, and the photosensitive component is disposed on the back of the transparent display area, so as to implement full screen display of the electronic device under the condition that the photosensitive component is ensured to work normally.
With the development of electronic devices, requirements of people on the electronic devices are higher and higher, for example, people hope to integrate at least two photosensitive components such as cameras on a display panel, so as to be convenient for shooting close-range or far-range or realizing multiple modes such as wide-angle shooting. In order to meet the above requirements, at least two light-transmitting display areas are arranged on the display panel at intervals, so that the cameras are integrated below the light-transmitting display areas.
In order to realize display of the display panel, a plurality of signal lines are disposed on the display panel to transmit corresponding electrical signals to the pixel circuits on the display panel. However, when the transparent display area is not centered in the first direction on the display panel, that is, the transparent display area is disposed near the left side or near the right side, the signal lines extending along the first direction are separated by the transparent display area, and at this time, the number of sub-pixels and the number of pixel circuits respectively connected to the signal lines located at the left side and the right side are not uniform, resulting in different loads of the signal lines at the left side and the right side.
Further, along with the increase of the light-transmitting display areas, when the setting directions of at least two light-transmitting display areas are consistent with the extending directions of the signal wires, in order to ensure the light transmittance of the light-transmitting display areas, no metal wiring structure is arranged in the light-transmitting display areas, so that the signal wires are separated by at least two light-transmitting display areas. When the signal line is a scanning line, the scanning line is connected with the grid driving circuit, and the signal line is separated by at least two light-transmitting display areas, so that scanning signals output by the grid driving circuit cannot be transmitted to the signal line between two adjacent light-transmitting display areas, sub-pixels between two adjacent light-transmitting display areas cannot be lightened, the display area of the display panel is reduced, and the improvement of the screen occupation ratio is affected.
In order to solve the above-described problems, the embodiment of the present invention provides a display panel 100 and a display device 1000. The display panel 100 and the display device 1000 according to the embodiment of the invention are described in detail below with reference to the accompanying drawings.
Embodiments of the present invention provide a display panel 100, and the display panel 100 may be an organic light emitting diode (Organic Light Emitting Diode, OLED) display panel.
Referring to fig. 1 to 3, fig. 1 is a top view of a display panel 100 according to an embodiment of the invention, fig. 2 is an enlarged view of a portion Q1 in fig. 1, and fig. 3 is an enlarged view of a portion Q2 in fig. 2. The display panel 100 of the embodiment of the invention has at least one first display area AA1 arranged at intervals along the first direction X, a second display area AA2 located at least partially on the periphery of each first display area AA1, and first transition display areas TA1 adjacent to both sides of each first display area AA1 along the first direction X, wherein the light transmittance of the first display area AA1 is greater than the light transmittance of the second display area AA 2.
Herein, it is preferable that the light transmittance of the first display area AA1 is 15% or more. To ensure that the light transmittance of the first display area AA1 is greater than 15%, even greater than 40%, even higher, the light transmittance of at least part of the functional film layers of the display panel 100 in this embodiment is greater than 80%, even greater than 90%.
According to the embodiment of the invention, the light transmittance of the first display area AA1 is larger than that of the second display area AA2, so that the photosensitive assembly 200 can be integrated on the back surface of the first display area AA1 by the display panel 100, the under-screen integration of the photosensitive assembly 200 of a camera for example is realized, meanwhile, the first display area AA1 can display pictures, the display area of the display panel 100 is increased, and the overall screen design of the display device 1000 is realized.
As shown in fig. 2 and 3, the display panel 100 includes a substrate, a plurality of first pixel units 10 located on the substrate, a plurality of first pixel circuit units 20, a plurality of first signal line units 30, and a plurality of connection line units 40.
Each of the first pixel units 10 includes a plurality of sub-pixels arranged in the first direction X, and the plurality of first pixel units 10 are arranged in the second direction Y crossing the first direction X, wherein the plurality of sub-pixels in each of the first pixel units 10 includes a first sub-pixel 11a located in the first display area AA1, a second sub-pixel 11b located in the second display area AA2, and a third sub-pixel 11c located in the first transition display area TA 1. By providing sub-pixels in each display area, the display area of the display panel 100 is increased.
Each of the first pixel circuit units 20 is configured to drive the sub-pixel display in a corresponding one of the first pixel units 10, each of the first pixel circuit units 20 includes a plurality of pixel circuits arranged along a first direction X, and the plurality of first pixel circuit units 20 are arranged along a second direction Y, wherein the plurality of pixel circuits in each of the first pixel circuit units 20 includes a first pixel circuit 21a configured to drive the first sub-pixel 11a to display, a second pixel circuit 21b configured to drive the second sub-pixel 11b to display, and a third pixel circuit 21c configured to drive the third sub-pixel 11c to display, the second pixel circuit 21b is located in the second display area AA2, and the first pixel circuit 21a and the third pixel circuit 21c are located in the first transition display area TA1. By disposing the first pixel circuit 21a connected to the first sub-pixel 11a in the first transitional display area TA1, the number of metal wirings in the first display area AA1 is effectively reduced, thereby improving the light transmittance of the first display area AA 1. Optionally, the pixel density of the first transition display area TA1 is the same as the pixel density of the first display area AA1, and the pixel density of the first display area AA1 is smaller than the pixel density of the second display area AA2, so that the first transition display area TA1 can have more space by the above arrangement, and the arrangement of the first pixel circuit 21a and the connection wire between the first pixel circuit 21a and the first sub-pixel 11a is convenient.
The first signal line unit 30 is electrically connected to the plurality of pixel circuits in the corresponding first pixel circuit unit 20, where the first signal line unit 30 includes a plurality of first signal line segments 31 extending along the first direction X and separated by the first display area AA1, and at this time, the plurality of first signal line segments 31 are disposed at two sides of the first display area AA1 at intervals, and when the number of the first display areas AA1 is at least two, a part of the first signal line segments 31 in the first signal line unit 30 are located between two adjacent first display areas AA 1. Each connecting line unit 40 electrically connects the corresponding plurality of first signal line segments 31 in the first signal line unit 30, and the connecting line unit 40 extends outside the first display area AA1, where the projection of the connecting line unit 40 and the first display area AA1 in the thickness direction of the display panel 100 does not overlap. When the number of the first display areas AA1 is one and the number of the first display areas AA1 is at least two, the connection line unit 40 is similar to the connection manner of the first signal line segment 31, and the number of the first display areas AA1 is at least two.
According to the display panel 100 provided by the embodiment of the invention, by arranging the connecting line units 40, each connecting line unit 40 electrically connects the plurality of first signal line segments 31 in the corresponding first signal line unit 30, so that the first signal line segments 31 positioned at two sides of the adjacent first display area AA1 can also receive stable and uniform electric signals, and the situation that when the position of the first display area AA1 is not centrally arranged, the loads of the first signal line segments 31 positioned at two sides of the first display area AA1 are different, so that the sub-pixels in the area perform luminous display is avoided. And the connection line unit 40 extends outside the first display area AA1, for example, a portion of the connection line unit 40 may extend to the first transition display area TA1, so as to further reduce the number of wires in the first display area AA1 and improve the light transmittance of the first display area AA 1.
In a specific implementation, the first direction X, the second direction Y, and the angles between the first direction X and the second direction Y may be set according to the needs of the user. Alternatively, the first direction X is a row direction of the display panel 100, such as a left-right extending direction in the drawing, the second direction Y is a column direction of the display panel 100, such as an up-down extending direction in the drawing, and an included angle between the first direction X and the second direction Y is 90 °, it is understood that the first direction X may be a straight line direction or a fold line or curve extending direction, as long as the left-right extending direction is satisfied, and the second direction Y may be a straight line direction, a fold line direction or curve extending direction. The first direction X is herein described as the row direction and the second direction Y as the column direction.
In order to connect the plurality of first signal line segments 31 in the first signal line unit 30 and not overlap the first display area AA1, it is necessary to bypass the connection line unit 40 around the first display area AA1 to ensure light transmittance of the first display area AA1, as shown in fig. 3, in some embodiments, the connection line unit 40 includes a first connection line segment 41 and a second connection line segment 42, the first connection line segment 41 extends along the second direction Y, the second connection line segment 42 is electrically connected with the first connection line segment 41 and extends along the first direction X, wherein the first connection line segment 41 and the second connection line segment 42 are fabricated in the same layer or the first connection line segment 41 and the second connection line segment 42 are connected through the via 43. By the above arrangement, the plurality of connection line units 40 can extend outside the first display area AA1 on the basis of being connected with the corresponding first signal line units 30. As shown in fig. 2 and 3, the first connection line segment 41 extending in the second direction Y means that the first connection line segment 41 extends in the column direction of the display panel 100, that is, in the up-down direction in the drawing, and the first connection line segment 41 may extend in a straight line, a curved line, or a broken line, as long as the first connection line segment 41 extends in the up-down direction of the display panel 100.
Based on the plurality of first signal line units 30 being sequentially disposed in the second direction Y, that is, the plurality of first signal line units 30 are sequentially disposed in the up-down direction of the display panel 100, each of the first signal line units 30 needs to be electrically connected with a corresponding one of the connection line units 40, when the connection line unit 40 includes the first connection line segment 41, the first connection line segment 41 connected with the plurality of first signal line units 30 needs to extend along the arrangement direction of the plurality of first signal line units 30 until bypassing the first display area AA1, at this time, the front projection of the first connection line segment 41 on the substrate may sequentially overlap with the front projection of the plurality of first signal line units 30 on the substrate, so that a capacitive load exists between the first connection line segment 41 and the plurality of first signal line units 30. Since the plurality of first signal line segments 31 of each first signal line unit 30 need to be electrically connected through one connection line unit 40, if the total area where the plurality of first connection line segments 41 overlap the first signal line unit 30 is different, there may be a case where the capacitive loads between the plurality of first signal line segments 31 and the first signal line unit 30 are not uniform.
In order to make the capacitive loads between the plurality of connection line units 40 and the plurality of first signal line units 30 the same, in some embodiments, the number of first signal line segments 31 spanned by the first connection line segments 41 of the plurality of connection line units 40 along the second direction Y is the same, so that the capacitive loads between the plurality of first connection line segments 41 and the first signal line segments 31 are the same to achieve capacitive compensation of the first connection line segments 41.
Referring to fig. 2 and 3, since the plurality of connection line units 40 need to be connected to the plurality of first signal line units 30 respectively, the plurality of connection line units 40 occupy a certain space, and the pixel density in the second display area AA2 is high, and in order to avoid affecting the aperture ratio of the pixels in the second display area AA2, the positions of the connection line units 40 need to be reasonably set to rationally utilize the space of the first transition display area TA 1.
Based on this, in some embodiments, the first transitional display area TA1 includes a first boundary 01 adjacent to the first display area AA1 and a second boundary 02 opposite to the first boundary 01 in the first direction X, and the first connection line segment 41 is disposed adjacent to the second boundary 02. Since the first pixel circuit 21a connected to the first sub-pixel 11a is located in the first transition display area TA1, in order to reduce the length of the connection line between the anode of the first sub-pixel 11a and the first pixel circuit 21a, the first pixel circuit 21a may be disposed in a region close to the first boundary 01, and at this time, not only the first pixel circuit 21a but also the third pixel circuit 21c are disposed in the first transition display area TA1 close to the first boundary 01, so that the space in the region is limited, and by disposing the first connection line segment 41 adjacent to the second boundary 02, the space of the first transition display area TA1 is utilized rationally.
Based on this, in order to connect the first subpixel 11a located in the first display area AA1 with the first pixel circuit 21a located in the first transitional display area TA1, in some embodiments, at least part of the first pixel circuit unit 20 includes a first lead 22a, and the first lead 22a is connected between the first pixel circuit 21a and the corresponding first subpixel 11 a. Further, when the number of the connection line units 40 is large, a predetermined distance is required between the first connection line segments 41 to prevent signal crosstalk, so that the first connection line segments 41 occupy a certain space, and at this time, the orthographic projection of a part of the first connection line segments 41 on the substrate overlaps a part of the third sub-pixels 11c, so as to prevent the first connection line segments 41 from causing crosstalk to the third pixel circuits 21c, in some embodiments, at least part of the first pixel circuit units 20 further include second leads 22c, the second leads 22c are connected between the third pixel circuits 21c and the corresponding third sub-pixels 11c, and the first leads 22a and the second leads 22b are respectively located at two sides of the first transition display area TA1 along the first direction X. It will be appreciated that the structures of the first lead 22a and the second lead 22b are schematically depicted in fig. 3, and the specific structure of the present invention is not limited as long as the sub-pixel can be connected to the corresponding pixel circuit.
Through the above arrangement, the first pixel circuit 21a located between the second boundary 02 and the first boundary 01 is connected with the first sub-pixel 11a through the first lead 22a, and the third pixel circuit 21c is connected with the third sub-pixel 11c located above the film layer where the first connection line segment 41 is located through the second lead 22c, so that the first lead 22a and the second lead 22c respectively use the space in the first direction X of the first transition display area TA1, that is, occupy the left and right spaces of the first transition display area TA1, so that the first lead 22a can be arranged close to the first boundary 01, the second lead 22c can be arranged close to the second boundary 02, and the left and right spaces of the first transition display area TA1 are reasonably utilized, so that the area of the first transition display area TA1 is effectively reduced.
Referring to fig. 4 to 7 together, fig. 4 is a top view of a display panel 100 according to another embodiment of the present invention, fig. 5 is an enlarged view of one display panel 100 shown in fig. 4 at Q3, fig. 6 is an enlarged view of fig. 5 at Q4, and fig. 7 is an enlarged view of another display panel 100 shown in fig. 4 at Q3. To further rationalize the placement of the connection line units 40, for example, the placement of the first connection line segments 41 in the connection line units 40, in some embodiments, the display panel 100 further has a second transition display area TA2, the second transition display area TA2 is located on a side of the first transition display area TA1 away from the first display area AA1 along the first direction X, the pixel density of the second transition display area TA2 is the same as the pixel density of the first display area AA1, and the first connection line segments 41 of the plurality of connection line units 40 are located in the second transition display area TA2 and/or the first transition display area TA1 and are located adjacent to the second boundary 02. Because the pixel density of the second transition display area TA2 is the same as that of the first display area AA1, the pixel density in the second transition display area TA2 is smaller than that of the second display area AA2, so that the second transition display area TA2 has more space for setting the connection line units 40, thereby ensuring a reasonable spacing between the plurality of connection line units 40 and ensuring mutual insulation between the plurality of connection line units 40.
In a specific implementation, a part of the first connecting line segments 41 of the connecting line units 40 may be located in the second transition display area TA2, a part of the first connecting line segments 41 of the connecting line units 40 are located in the first transition display area TA1, and the first connecting line segments 41 in the plurality of connecting line units 40 are located adjacent to the second boundary 02, where the orthographic projection of the first connecting line segments 41 on the substrate overlaps with the second boundary 02, so that the space of the first transition display area TA1 and the second transition display area TA2 may be reasonably utilized.
When the display panel 100 further has the second transition display area TA2, in order to further increase the display area, each of the first pixel units 10 further includes a fourth sub-pixel 11d located in the second transition display area TA2, and each of the first pixel circuit units 20 includes a fourth pixel circuit 21d located in the second transition display area TA2 and electrically connected to the fourth sub-pixel 11 d.
Referring to fig. 5 and 7, in some embodiments, each connection line unit 40 includes more than one first connection line segment 41 between two adjacent first display areas AA1, that is, the first signal line segment 31 between two adjacent first display areas AA1 is connected to the second connection line segment 42 through more than one first connection line segment 41.
In a specific implementation, when the area between the two first display areas AA1 is provided with the second transitional display area TA2, each connection line unit 40 includes one or two first connection line segments 41 between the adjacent two first display areas AA 1. As shown in fig. 5, each connection line unit 40 includes two first connection line segments 41 between two adjacent first display areas AA1, and as shown in fig. 7, each connection line unit 40 includes one first connection line segment 41 between two adjacent first display areas AA 1.
When the two first display areas AA1 are far apart, in addition to the second transition display area TA2 disposed between the two adjacent first display areas AA1, a second display area AA2 may be disposed between the two second transition display areas TA2, so as to improve the display effect of the display panel 100 in the area. At this time, each connection line unit 40 may include two first connection line segments 41 between adjacent two first display areas AA1, and locate the first connection line segments 41 in the second transition display area TA2 or the first transition display area TA1, where an orthographic projection of the first connection line segments 41 on the substrate may overlap the second boundary 02.
In order to reasonably arrange the plurality of connection line units 40, in some embodiments, the second connection line segments 42 of the plurality of connection line units 40 are located at one side or both sides of the first display area AA1 along the second direction Y. By the above arrangement, the plurality of connection line units 40 can be wound on both sides of the first display area AA1 in the second direction Y on the basis of realizing connection with the corresponding first signal line unit 30, thereby rationalizing the space.
With continued reference to fig. 6, in some embodiments, the display panel 100 further has a non-display area NA surrounding the first display area AA1 and the second display area AA2, and at least a portion of the second connecting line segments 42 in the connecting line unit 40 are located in the non-display area NA. By locating at least a portion of the second connecting line segment 42 in the non-display area NA, the second connecting line segment 42 can be prevented from occupying the spatial position of the display area.
Referring to fig. 8 and 9, fig. 8 is a top view of a display panel according to still another embodiment of the present invention, and fig. 9 is an enlarged view of Q5 in fig. 8. In some embodiments, the display panel 100 further has a third transition display area TA3, in the second direction Y, the third transition display area TA3 is located between the first display area AA1 and the second display area AA2 and between the first transition display area TA1 and the second display area AA2, and the pixel density of the third transition display area TA3 is the same as the pixel density of the first display area AA1, so that more space exists between the sub-pixels of the third transition display area TA3, and at this time, at least part of the second connecting line segment 42 in the connecting line unit 40 is located in the third transition display area TA3. When the display panel 100 further has the second transition display area TA2, the third transition display area TA3 is further located between the second transition display area TA2 and the second display area AA 2. A sub-pixel and a pixel circuit connected to the sub-pixel may also be disposed in the third transition display area TA3. The structure of the sub-pixels in the third transition display area TA3 is similar to that of the fourth sub-pixels in the second transition display area TA 2.
By providing the third transitional display area TA3, a part of the second connecting line segments 42 may be located in the non-display area NA, and the remaining second connecting line segments 42 may be located in the third transitional display area TA3, so that the plurality of connecting line units 40 may be wound from two sides of the first display area AA1 along the second direction Y, respectively.
In some embodiments, the first signal line unit 30 includes a reference voltage line, or a light emission control signal line, or a scan line. When the first signal line unit 30 is a scan line, the plurality of first signal line segments 31 are connected by the connection line unit 40, so that the first signal line unit 30 can be stably connected to the Gate driving circuits on one side or two sides of the display Panel 100, wherein the Gate driving circuits can be integrated on the display Panel 100, that is, the embodiment of the invention uses the Gate driving circuits integrated into the display Panel 1 to perform the in-Panel Gate (GIP) method, so as to avoid external connection of the Gate driving circuits. In the embodiment of the present invention, the reference voltage line (Vref), the emission control signal line (EM), and the scan line (scan) may be connected, respectively, through the connection line unit.
Referring to fig. 9, in order to realize display of each sub-pixel in the display panel 100, the second display area AA2 may surround the first display area AA1, and the display panel 100 further includes a plurality of second signal lines 50, each of the second signal lines 50 extends along the second direction Y, the plurality of second signal lines 50 are arranged along the first direction X, wherein the second connecting line segments 42 are disposed on different layers from the second signal lines 50, and the signals provided by the first signal line units 30 and the second signal lines 50 are different. Alternatively, the second signal line 50 may be a data line or an anode power supply line (VDD), and the data line or the anode power supply line (VDD) may extend in the column direction of the display panel 100. It will be appreciated that two second signal lines 50 are schematically illustrated in fig. 9, and a plurality of second signal lines 50 are further provided on the display panel 100. The second signal lines 50 are respectively connected to each pixel circuit, for example, when the second signal lines 50 are data lines, the data lines supply data signals to the corresponding sub-pixels.
As can be seen from fig. 9, the second signal lines 50 extend along the column direction and are arranged in a plurality along the row direction, and the second connection line segments 42 of the connection line units 40 extend along the row direction, when the second connection line segments 42 are located in the third transition display area TA3, in order to avoid that the second connection line segments 42 are connected to the second signal lines 50, different layers of the second connection line segments 42 and the second signal lines 50 are required to be disposed to ensure correct signal transmission.
The positions of the respective wirings in the display panel 100 are described below. In some embodiments, in the manufacturing process of the display panel 100, a 3-Metal process may be used such that the display panel 100 includes a first conductive layer M1, a second conductive layer M2, and a third conductive layer M3 sequentially disposed in a direction away from the substrate 10. Wherein the scan line may be formed in the first conductive layer M1, the reference voltage line may be formed in the second conductive layer M2, and the data line or the anode power supply line may be formed in the third conductive layer M3. Insulating dielectric layers are arranged between the conductive layers to prevent short circuit between the conductive layers. Further, in order to achieve the light transmittance of the first display area AA1, a transparent conductive (Indium Tin Oxides, ITO) layer is further disposed on the display panel 100, and the ITO layer may be disposed on a side of the third conductive layer M3 facing away from the second conductive layer M2. At this time, when the second connection line segment 42 is located in the non-display area NA, the second connection line segment 42 may be located in any one of the first conductive layer M1, the second conductive layer M2, the third conductive layer M3, or the ITO layer, and the first connection line segment 41 may be located in the third conductive layer M3.
In some embodiments, in the manufacturing process of the display panel 100, a 4-layer Metal (4 Metal) process may be used, so that the display panel 100 includes the first conductive layer M1, the second conductive layer M2, the third conductive layer M3, and the fourth conductive layer M4 sequentially disposed in a direction away from the substrate 10, which facilitates the fabrication of some wiring film structures into two layers, reduces the planar size of the display panel 100, or is easier to implement high PPI relative to the display panel 100 of the same size. The scan lines may be formed in the first conductive layer M1, the reference voltage lines may be formed in the second conductive layer M2, the data lines or the anode power supply lines may be formed in the third conductive layer M3 or the fourth conductive layer M4, and at this time, an ITO layer may be further disposed on the display panel 100, and the ITO layer may be located at a side of the fourth conductive layer M4 facing away from the third conductive layer M3. Based on this, when the second connection line segment 42 is located in the non-display area NA, the second connection line segment 42 may be located in any one of the first conductive layer M1, the second conductive layer M2, the third conductive layer M3, the fourth conductive layer M4, or the ITO layer, and the first connection line segment 41 may be located in the third conductive layer M3 and/or the fourth conductive layer M4 to avoid interference of the respective signal lines.
The pixel circuit, the reference voltage line (Vref), the emission control signal line (EM), and the scan line (scan) according to the embodiment of the present invention are described below. Referring to fig. 10, fig. 10 is a schematic diagram of a pixel circuit.
In some embodiments, the circuit structure of the pixel circuit may be any one of a 3T1C circuit, a 6T2C circuit, a 7T1C circuit, a 7T2C circuit, or a 9T1C circuit. Herein, the "3T1C circuit" refers to a pixel circuit including 3 thin film transistors (T) and 1 capacitor (C) among pixel circuits, and the other "7T1C circuit", "7T2C circuit", "9T1C circuit", and so on. The first pixel circuit 21a is described herein as a 7T1C circuit, and the other pixel circuits are similar to the first pixel circuit 21 a.
As shown in fig. 10, the first pixel circuit 21a includes a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a seventh transistor T7, a capacitor Cst, and an organic light emitting diode OLED. The transistors T1 to T7 have a control terminal, a first terminal and a second terminal, respectively. The organic light emitting diode OLED may be the first subpixel 11a of the first display area AA 1.
The first end of the second transistor T2 is electrically connected to the data signal (Vdata) input, the control end of the second transistor T2 is electrically connected to the second Scan signal (Scan 2) input, and the second end of the second transistor T2 is electrically connected to the first end of the first transistor T1 and the second end of the fifth transistor T5.
The first transistor T1 is a driving transistor, a first end of the first transistor T1 is electrically connected to a second end of the second transistor T2 and a second end of the fifth transistor T5, a second end of the first transistor T1 is electrically connected to a first end of the sixth transistor T6, and a control end of the first transistor T1 is electrically connected to a first end of the third transistor T3, a first end of the fourth transistor T4, and a second pole of the capacitor Cst.
The first terminal of the third transistor T3 is electrically connected to the first terminal of the fourth transistor T4, the control terminal of the first transistor T1, and the second terminal of the capacitor Cst, the control terminal of the third transistor T3 is electrically connected to the second Scan signal (Scan 2) input terminal, and the second terminal of the third transistor T3 is electrically connected to the second terminal of the first transistor T1 and the first terminal of the sixth transistor T6.
The first terminal of the fourth transistor T4 is electrically connected to the first terminal of the third transistor T3, the control terminal of the first transistor T1, and the second pole of the capacitor Cst, the control terminal of the fourth transistor T4 is electrically connected to the first Scan signal (Scan 1) input terminal, and the second terminal of the fourth transistor T4 is electrically connected to the reference signal (Vref) input terminal.
A first terminal of the fifth transistor T5 is electrically connected to the first power signal (ELVDD) input terminal and the first pole of the capacitor Cst, a control terminal of the fifth transistor T5 is electrically connected to the emission control signal (EM) input terminal, and a second terminal of the fifth transistor T5 is electrically connected to the first terminal of the first transistor T1 and the second terminal of the second transistor T2.
The first terminal of the sixth transistor T6 is electrically connected to the second terminal of the first transistor T1 and the second terminal of the third transistor T3, the control terminal of the sixth transistor T6 is electrically connected to the light emission control signal (EM) input terminal, and the second terminal of the sixth transistor T6 is electrically connected to the second terminal of the seventh transistor T7 and the anode of the organic light emitting diode OLED.
The first end of the seventh transistor T7 is electrically connected to the reference signal (Vref) input terminal and the second end of the fourth transistor T4, the control end of the seventh transistor T7 is electrically connected to the third Scan signal (Scan 1) input terminal, and the second end of the seventh transistor T7 is electrically connected to the anode of the organic light emitting diode OLED and the second end of the sixth transistor T6.
The cathode of the organic light emitting diode OLED is electrically connected to a second power signal (ELVSS) input terminal.
The arrangement structure of each sub-pixel and the pixel circuit structure corresponding to each sub-pixel in the first display area AA1, the second display area AA2, and the first transition display area TA1 according to the embodiment of the present invention are described below.
Referring further to fig. 2 and 3, in some embodiments, the display panel 100 further includes a plurality of second pixel units 60 and a plurality of second pixel circuit units 70. Each of the second pixel units 70 includes a plurality of sub-pixels arranged along the first direction X, and each of the second pixel units 60 is located between two of the first pixel units 10 along the second direction Y, wherein the plurality of sub-pixels in the second pixel unit 20 are the second sub-pixels 11b located in the second display area AA 2. Each of the second pixel circuit units 70 includes a plurality of pixel circuits arranged along the first direction X, and each of the second pixel circuit units 70 is configured to drive the sub-pixel display in a corresponding one of the second pixel units 60, wherein the plurality of pixel circuits in the second pixel circuit units 70 are the second pixel circuits 21b located in the second display area AA2, each of the second pixel circuit units 70 individually corresponds to one of the first signal line units 30, and one of the first signal line units 30 is electrically connected to the plurality of pixel circuits in a corresponding one of the second pixel circuit units 70. With the above arrangement, the pixel density of the second display area AA2 can be effectively increased, and the display effect of the display panel 100 can be improved.
In order to reasonably set the pixel densities of the second display area AA2 and the first display area AA1 to satisfy both the display effect and the light transmittance of the display panel 100, optionally, at least one first pixel unit 10 may be disposed between two adjacent second pixel units 60. In practical implementation, the number of the first pixel units 10 between two adjacent second pixel units 60 may be set according to the user's requirement, which is not limited in the present invention.
Alternatively, the display panel may include only the first pixel unit 10, and the first sub-pixel 11a of the first pixel unit 10 located in the first display area AA1 may have a larger separation distance along the first direction X than the second sub-pixel 11b and the third sub-pixel 11c, respectively, so as to improve the light transmittance of the first display area AA 1.
In some embodiments, the area of the orthographic projection of the first sub-pixel 11a on the substrate is greater than or equal to the area of the orthographic projection of the second sub-pixel 11b on the substrate, and the area of the orthographic projection of the first sub-pixel 11a on the substrate may also be greater than or equal to the area of the orthographic projection of the third sub-pixel 11c on the substrate, and the distance between adjacent first sub-pixels 11a in the first direction X is twice the distance between adjacent second sub-pixels 11b in the first direction X. Alternatively, when the display panel 100 includes the first pixel unit 10 and the second pixel unit 60, the distance of the adjacent first sub-pixel 11a in the second direction Y is twice that of the adjacent second sub-pixel 11b in the second direction Y, and by the above arrangement, the pixel density of the first display area AA1 can be reduced and the light transmittance of the first display area AA1 can be improved. Alternatively, the pixel arrangement structure of the plurality of third sub-pixels 11c in the first transitional display area TA1 is the same as the pixel arrangement structure of the plurality of first sub-pixels 11a in the first display area AA 1. It is understood that the pixel arrangement structure of the plurality of first sub-pixels 11a in the first display area AA1 may be set according to the user's requirement, so long as the light transmittance of the first display area AA1 can be improved and no obvious display boundary exists between the first display area AA1 and the second display area AA 2.
Based on this, a partial number of the first sub-pixels 11a, a partial number of the second sub-pixels 11b, and a partial number of the third sub-pixels 11c may be arranged in a line in the first direction X, that is, the partial number of the first sub-pixels 11a, the partial number of the second sub-pixels 11b, and the partial number of the third sub-pixels 11c are located in the same line, and the first pixel circuits 21a, the second pixel circuits 21b, and the third pixel circuits 21c corresponding to the first sub-pixels 11a, the second sub-pixels 11b, and the third sub-pixels 11c arranged in a line are electrically connected to the same first signal line unit 30. Through the above arrangement, reasonable wiring can be realized, and the first signal line unit 30 can control the sub-pixels of the same row to emit light for display, so that the display uniformity of the first display area AA1, the second display area AA2 and the first transition display area TA1 can be improved. It is understood that, as shown in fig. 6, when the display panel 100 further has the second transition display area TA2, the pixel circuits corresponding to the sub-pixels of the same row may be electrically connected to the same first signal line unit 30.
Illustratively, as shown in fig. 3, the front projection of the first pixel circuit 21a on the substrate may overlap with the front projection of the first pixel unit 10 on the substrate. Or the front projection of the first pixel circuit 21a on the substrate may be located between the front projections of the adjacent two first pixel units 10 on the substrate, so as to reasonably arrange the first pixel circuit 21a.
Next, the first sub-pixel 11a, the second sub-pixel 11b, the third sub-pixel 11c, and the fourth sub-pixel 11d according to the embodiment of the present invention will be described.
In some embodiments, the display panel 100 is located on the pixel defining layer on the side of the pixel circuit unit facing away from the substrate, and the pixel defining layer includes a plurality of first pixel openings, second pixel openings, third pixel openings, and fourth pixel openings, such that corresponding sub-pixels are formed in the pixel openings.
In some embodiments, the first subpixel 11a includes a first light emitting structure, a first electrode, and a second electrode, which are sequentially stacked. The first light emitting structure is positioned in the first pixel opening, the first electrode is positioned on one side of the first light emitting structure facing the substrate, and the second electrode is positioned on one side of the first light emitting structure facing away from the substrate. One of the first electrode and the second electrode is an anode, and the other is a cathode.
In some embodiments, the second subpixel 11b includes a second light emitting structure, a third electrode, and a fourth electrode. The second light-emitting structure is positioned in the second pixel opening, the third electrode is positioned on one side of the second light-emitting structure facing the substrate, and the fourth electrode is positioned on one side of the second light-emitting structure facing away from the substrate. One of the third electrode and the fourth electrode is an anode, and the other is a cathode.
In some embodiments, the third subpixel 11c includes a third light emitting structure, a fifth electrode, and a sixth electrode. The third light-emitting structure is positioned in the third pixel opening, the fifth electrode is positioned on one side of the third light-emitting structure facing the substrate, and the sixth electrode is positioned on one side of the third light-emitting structure facing away from the substrate. One of the fifth electrode and the sixth electrode is an anode, and the other is a cathode.
In some embodiments, the fourth subpixel 11d includes a fourth light emitting structure, a seventh electrode, and an eighth electrode. The fourth light-emitting structure is positioned in the fourth pixel opening, the seventh electrode is positioned on one side of the fourth light-emitting structure facing the substrate, and the eighth electrode is positioned on one side of the fourth light-emitting structure facing away from the substrate. One of the seventh electrode and the eighth electrode is an anode, and the other is a cathode.
In this embodiment, the first electrode, the third electrode, the fifth electrode, and the seventh electrode are anodes, and the second electrode, the fourth electrode, the sixth electrode, and the eighth electrode are cathodes.
The first light emitting structure, the second light emitting structure, the third light emitting structure, and the fourth light emitting structure may include an OLED light emitting layer, respectively, and may further include at least one of a hole injection layer, a hole transport layer, an electron injection layer, or an electron transport layer, respectively, according to design requirements of the first light emitting structure, the second light emitting structure, the third light emitting structure, and the fourth light emitting structure.
In some embodiments, the first electrode is a light transmissive electrode. In some embodiments, the first electrode comprises an Indium Tin Oxide (ITO) layer or an Indium zinc Oxide layer. In some embodiments, the first electrode is a reflective electrode including a first light transmissive conductive layer, a reflective layer on the first light transmissive conductive layer, and a second light transmissive conductive layer on the reflective layer. The first transparent conductive layer and the second transparent conductive layer can be ITO, indium zinc oxide and the like, and the reflecting layer can be a metal layer, for example, made of silver. The third electrode, the fifth electrode, and the seventh electrode may be each configured to be made of the same material as the first electrode.
In some embodiments, the second electrode comprises a magnesium silver alloy layer. The fourth electrode, the sixth electrode, and the eighth electrode may be each configured to be made of the same material as the second electrode. In some embodiments, the second electrode, the fourth electrode, and the sixth electrode may be interconnected as a common electrode.
In some embodiments, the orthographic projection of each first light emitting structure on the substrate is comprised of one first graphic unit or is comprised of a concatenation of two or more first graphic units, the first graphic unit comprising at least one selected from the group consisting of a circle, an ellipse, a dumbbell, a gourd, a rectangle.
In some embodiments, the orthographic projection of each third electrode on the substrate is comprised of one second graphic unit or is comprised of a concatenation of more than two second graphic units, the second graphic units comprising at least one selected from the group consisting of circular, oval, dumbbell, gourd, rectangular.
According to the display panel 100 and the display device 1000 of the embodiment of the invention, the display panel 100 has at least two first display areas AA1, a second display area AA2 and a first transition display area TA1, and the light transmittance of the first display area AA1 is greater than that of the second display area AA2, so that the display panel 100 can integrate the photosensitive assembly 200 on the back of the first display area AA1, and thus, for example, the under-screen integration of the photosensitive assembly 200 of a camera is realized, and meanwhile, the first display area AA1 can display images, so that the display area of the display panel 100 is increased, and the overall screen design of the display device 1000 is realized.
The display panel 100 of the embodiment of the present invention includes a plurality of first pixel units 10, a plurality of first pixel circuit units 20, a plurality of first signal line units 30, and a plurality of connection line units 40, wherein the plurality of first pixel units 10 include a plurality of sub-pixels arranged along a first direction X, and the plurality of first pixel circuit units 20 include a plurality of pixel circuits arranged along the first direction X, such that the pixel circuits are connected with the corresponding sub-pixels to drive the corresponding sub-pixels to emit light for display. The plurality of pixel circuits include a first pixel circuit 21a located in the first transition display area TA1, and the first pixel circuit 21a is electrically connected to the first sub-pixel 11a located in the first display area AA1, so that the number of metal wires in the first display area AA1 is effectively reduced, and the light transmittance of the first display area AA1 is effectively improved.
Further, each first signal line unit 30 is electrically connected to a plurality of pixel circuits in a corresponding one of the first pixel circuit units 20, so that corresponding signals are transmitted to the pixel circuits through the first signal line units 30, and the sub-pixels connected thereto are driven to emit light for display through the pixel circuits. Since the display panel 100 of the embodiment of the invention includes two first display areas AA1 spaced apart along the first direction X, in order to avoid the influence of the metal routing on the transmittance of the first display areas AA1 caused by the metal routing in the first display areas AA1, the first signal line unit 30 includes a plurality of first signal line segments 31 extending along the first direction X and spaced apart, a part of the first signal line segments 31 in the first signal line unit 30 are located between two adjacent first display areas AA1, if no reasonable routing structure is provided, the first signal line segments 31 located between two adjacent first display areas AA1 are disconnected from each other, and cannot stably transmit an electrical signal, in the embodiment of the invention, each of the connecting line units 40 electrically connects the plurality of first signal line segments 31 in the corresponding one of the first signal line units 30, so that the first signal line segments 31 located between two adjacent first display areas AA1 can also receive a stable electrical signal and perform luminescent display through the pixel circuit sub-pixels. And the connection line unit 40 extends outside the first display area AA1, so that the number of wires in the first display area AA1 is further reduced, and the light transmittance of the first display area AA1 is improved.
The embodiment of the present invention also provides a display device 1000, where the display device 1000 may include the display panel 100 of any of the above embodiments. A display device 1000 of an embodiment in which the display device 1000 includes the display panel 100 of the above-described embodiment will be described below as an example.
Referring to fig. 11 and 12, fig. 11 is a schematic structural view of a display device according to an embodiment of the present invention, and fig. 12 is a cross-sectional view in a direction B-B of fig. 11. In the display device 1000 of the present embodiment, the display panel 100 may be the display panel 100 of one of the above embodiments, where the display panel 100 has a first display area AA1 and a second display area AA2, and the light transmittance of the first display area AA1 is greater than the light transmittance of the second display area AA 2.
The display panel 100 includes a first surface S1 and a second surface S2 opposite to each other, wherein the first surface S1 is a display surface. The display device 1000 further includes a photosensitive assembly 200, where the photosensitive assembly 200 is located on the second surface S2 side of the display panel 100, and the photosensitive assembly 200 corresponds to the first display area AA 1.
The photosensitive assembly 200 may be an image capturing device for capturing external image information. In this embodiment, the photosensitive element 200 is a complementary metal oxide semiconductor (Complementary Metal Oxide Semiconductor, CMOS) image capturing Device, and in other embodiments, the photosensitive element 200 may be another type of image capturing Device such as a Charge-coupled Device (CCD) image capturing Device. It is understood that the photosensitive assembly 200 may not be limited to an image capturing device, for example, in some embodiments, the photosensitive assembly 200 may also be an infrared sensor, a proximity sensor, an infrared lens, a floodlight sensing element, an ambient light sensor, a lattice projector, or the like. In addition, the display device 1000 may further integrate other components, such as an earpiece, a speaker, etc., on the second surface S2 of the display panel 100.
According to the display device 1000 of the embodiment of the invention, the light transmittance of the first display area AA1 is greater than the light transmittance of the second display area AA2, so that the photosensitive assembly 200 can be integrated on the back surface of the first display area AA1 by the display panel 100, for example, the under-screen integration of the photosensitive assembly 200 of the image acquisition device is realized, and meanwhile, the first display area AA1 can display a picture, so that the display area of the display panel 100 is increased, and the overall screen design of the display device 1000 is realized.
Further, when the display device 1000 of the embodiment of the invention includes two first display areas AA1 spaced apart along the first direction X, in order to avoid the influence of the metal routing on the transmittance of the first display areas AA1 caused by the metal routing in the first display areas AA1, the first signal line unit 30 includes a plurality of first signal line segments 31 extending along the first direction X and spaced apart from each other, a part of the first signal line segments 31 in the first signal line unit 30 are located between two adjacent first display areas AA1, if no reasonable routing structure is provided, the first signal line segments 31 located between two adjacent first display areas AA1 are disconnected from each other, and cannot stably transmit electric signals, in the embodiment of the invention, each connecting line unit 40 electrically connects the plurality of first signal line segments 31 in the corresponding one first signal line unit 30, so that the first signal line segments 31 located between two adjacent first display areas AA1 can also receive stable electric signals, and perform luminous display through the pixel circuit sub-pixels. And the connecting line unit 40 extends outside the first display area AA1, so as to further reduce the number of wires in the first display area AA1, improve the light transmittance of the first display area AA1, and facilitate the under-screen integration of the plurality of optical assemblies 200.
These embodiments are not all details described in detail according to the present invention as examples above, nor are they intended to limit the invention to the specific embodiments described. 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 modifications as are suited to the particular use contemplated. The invention is limited only by the claims and the full scope and equivalents thereof.

Claims (15)

1. A display panel having at least one first display region arranged at intervals along a first direction, a second display region located at least partially around each of the first display regions, and first transition display regions adjacent to the first display regions on both sides of the first direction, the first display region having a light transmittance greater than that of the second display region, the display panel comprising:
a plurality of first pixel units, each of which includes a plurality of sub-pixels arranged along a first direction, and a plurality of first pixel units arranged along a second direction intersecting the first direction, wherein the plurality of sub-pixels in each of the first pixel units includes a first sub-pixel located in a first display region, a second sub-pixel located in a second display region, and a third sub-pixel located in a first transition display region;
A plurality of first pixel circuit units, each of which is used for driving a sub-pixel display in a corresponding one of the first pixel units, each of which comprises a plurality of pixel circuits arranged along a first direction, and a plurality of first pixel circuit units arranged along a second direction, wherein each of the plurality of pixel circuits in the first pixel circuit units comprises a first pixel circuit used for driving the first sub-pixel display, a second pixel circuit used for driving the second sub-pixel display and a third pixel circuit used for driving the third sub-pixel display, the second pixel circuits are positioned in the second display area, and the first pixel circuits and the third pixel circuits are positioned in the first transition display area;
a plurality of first signal line units, one of which is electrically connected to a plurality of pixel circuits in a corresponding one of the first pixel circuit units, each of which includes a plurality of first signal line segments extending in the first direction and separated by the first display region;
a plurality of connection line units, each of which electrically connects the plurality of first signal line segments corresponding to one of the first signal line units, the connection line units extending outside the first display area;
The connecting line units comprise first connecting line segments which extend along the second direction, and the number of the first signal line segments which are spanned by the first connecting line segments of the connecting line units along the second direction is the same.
2. The display panel according to claim 1, wherein the number of the first display areas is at least two, and a part of the number of the first signal line segments in the first signal line unit is located between two adjacent first display areas.
3. The display panel according to claim 1, wherein the connection line unit includes:
the second connecting line segment is electrically connected with the first connecting line segment and extends along the first direction, and the first connecting line segment and the second connecting line segment are manufactured in the same layer or the first connecting line segment and the second connecting line segment are connected through a through hole.
4. A display panel according to claim 3, wherein the first transitional display region comprises a first boundary adjoining the first display region and a second boundary opposite the first boundary in the first direction, the first connection segment being disposed adjacent the second boundary.
5. The display panel of claim 4, wherein at least a portion of the first pixel circuit unit includes a first lead connected between the first pixel circuit and the corresponding first subpixel and a second lead connected between the third pixel circuit and the corresponding third subpixel,
the first lead and the second lead are respectively positioned at two sides of the first transition display area along the first direction.
6. The display panel of claim 4, further comprising a second transitional display region on a side of the first transitional display region away from the first display region in the first direction, the second transitional display region having a same pixel density as the first display region,
the first connecting line segments of the plurality of connecting line units are positioned in the second transition display area and/or the first transition display area and are arranged adjacent to the second boundary.
7. The display panel according to any one of claims 3 to 6, wherein the second connection line segments of the plurality of connection line units are located at one side or both sides of the first display area along the second direction.
8. The display panel according to any one of claims 3 to 6, further comprising a non-display region surrounding the first display region and the second display region, wherein at least part of the second connection line segments in the connection line units are located in the non-display region;
and/or the display panel is further provided with a third transition display area, in the second direction, the third transition display area is located between the first display area and the second display area and between the first transition display area and the second display area, the pixel density of the third transition display area is the same as that of the first display area, and at least part of the second connecting line segments in the connecting line units are located in the third transition display area.
9. The display panel according to any one of claims 1 to 6, wherein each of the connection line units includes one or more of the first connection line segments between adjacent two of the first display regions.
10. The display panel according to any one of claims 3 to 6, further comprising:
a plurality of second signal lines each extending in the second direction, the plurality of second signal lines being arranged in the first direction,
The second connecting line segment and the second signal line are arranged in different layers.
11. The display panel according to any one of claims 1 to 6, wherein the first signal line unit includes a reference voltage line, or a light emission control signal line, or a scan line.
12. The display panel of claim 1, further comprising:
a plurality of second pixel units, each of the second pixel units including a plurality of sub-pixels arranged along the first direction; each second pixel unit is located between two first pixel units along the second direction, wherein a plurality of sub-pixels in the second pixel units are second sub-pixels located in the second display area;
a plurality of second pixel circuit units, each of the second pixel circuit units including a plurality of pixel circuits arranged along the first direction; each second pixel circuit unit is used for driving the sub-pixel display in a corresponding second pixel unit, wherein the plurality of pixel circuits in the second pixel circuit unit are second pixel circuits positioned in the second display area;
Each of the second pixel circuit units individually corresponds to one of the first signal line units, and one of the first signal line units is electrically connected with a plurality of pixel circuits in a corresponding one of the second pixel circuit units.
13. The display panel of claim 12, wherein a distance of adjacent first sub-pixels in the first direction is twice a distance of adjacent second sub-pixels in the first direction, a distance of adjacent first sub-pixels in the second direction is twice a distance of adjacent second sub-pixels in the second direction, and a pixel arrangement formed by a plurality of the first sub-pixels is the same as a pixel arrangement formed by a plurality of the third sub-pixels.
14. The display panel according to claim 12, wherein a part of the first sub-pixels, a part of the second sub-pixels, and a part of the third sub-pixels are arranged in a row along the first direction, and the first pixel circuits, the second pixel circuits, and the third pixel circuits corresponding to the first sub-pixels arranged in a row are electrically connected to the same first signal line unit.
15. A display device comprising the display panel according to any one of claims 1 to 14.
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