CN110931537B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
- Publication number
- CN110931537B CN110931537B CN201911306805.8A CN201911306805A CN110931537B CN 110931537 B CN110931537 B CN 110931537B CN 201911306805 A CN201911306805 A CN 201911306805A CN 110931537 B CN110931537 B CN 110931537B
- Authority
- CN
- China
- Prior art keywords
- pixel
- sub
- organic light
- emitting element
- display area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/08—Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared
Abstract
The embodiment of the invention provides a display panel and a display device, relates to the technical field of display, reduces the influence of broken wires of metal wires on the luminescence of sub-pixels, and optimizes the display performance. The display panel includes: the display area comprises a main display area and at least one auxiliary display area, the plane of the main display area is intersected with the plane of the auxiliary display area, a bending shaft is arranged between the main display area and the auxiliary display area, and the main display area and/or the auxiliary display area comprises a first display area close to the bending shaft; a sub-pixel including an organic light emitting element and a pixel driving circuit, the organic light emitting element including an anode, a light emitting layer, and a cathode; in the first display region, the anode of the organic light emitting element and the at least two pixel driving circuits are electrically connected through a connection structure, or the anode of the organic light emitting element and the anode of at least one other organic light emitting element are electrically connected through a connection structure.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to a display panel and a display device.
[ background of the invention ]
At present, in order to further improve the screen occupation ratio and better realize the overall screen design, the edge of the display area can be bent at a large angle to cover the side face of the display panel, so that the display area forms a front display area and a side display area. However, since the side display region is bent compared with the front display region, metal traces near the bending axis, such as metal traces forming the pixel driving circuit or metal traces providing driving signals to the pixel driving circuit, are easily broken, so that the pixel driving circuit cannot normally operate, and further the organic light emitting device cannot be driven to emit light, thereby affecting the display effect.
[ summary of the invention ]
In view of this, embodiments of the present invention provide a display panel and a display device, which reduce the influence of the broken metal trace on the light emission of the sub-pixels and optimize the display performance.
In one aspect, an embodiment of the present invention provides a display panel, including:
the display area comprises a main display area and at least one auxiliary display area, the plane of the main display area is intersected with the plane of the auxiliary display area, a bending axis is arranged between the main display area and the auxiliary display area, and the main display area and/or the auxiliary display area comprise a first display area close to the bending axis;
a sub-pixel including an organic light emitting element including an anode, a light emitting layer, and a cathode, and a pixel driving circuit;
in the first display region, the anode of the organic light emitting element and at least two of the pixel driving circuits are electrically connected through a connection structure, or the anode of the organic light emitting element and the anode of at least one other of the organic light emitting elements are electrically connected through the connection structure.
In another aspect, an embodiment of the present invention provides a display device, including the display panel described above.
One of the above technical solutions has the following beneficial effects:
in the technical solution provided in the embodiment of the present invention, in the first display region, by electrically connecting the anode of the organic light emitting element and the at least two pixel driving circuits through the connection structure, the organic light emitting element can be driven by the at least two pixel driving circuits, and when a certain pixel driving circuit fails to work normally due to a disconnection, the organic light emitting element can still emit light under the driving of the other pixel driving circuits electrically connected thereto; or, by electrically connecting the anode of the organic light emitting element and the anode of at least one other organic light emitting element through the connection structure, the organic light emitting element can receive the driving current of the other organic light emitting element, and when the pixel driving circuit corresponding to the organic light emitting element cannot normally operate due to disconnection, the organic light emitting element can emit light under the action of the driving current of the other organic light emitting element electrically connected with the organic light emitting element. Therefore, the display panel provided by the embodiment of the invention reduces the risk that the sub-pixels cannot emit light due to wire breakage, improves the light emitting reliability of the display area near the bending axis, and optimizes the display effect.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a top view of a display panel according to an embodiment of the invention;
FIG. 2 is a schematic diagram illustrating the connection of sub-pixels in a first display area according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating another connection of sub-pixels in a first display area according to an embodiment of the invention;
FIG. 4 is a schematic diagram of a connection between a first sub-pixel and a second sub-pixel according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view taken along line A1-A2 of FIG. 4;
FIG. 6 is a schematic diagram of another connection between the first sub-pixel and the second sub-pixel according to the embodiment of the invention;
FIG. 7 is a cross-sectional view taken along line B1-B2 of FIG. 6;
FIG. 8 is a schematic diagram illustrating another connection between the second sub-pixel and the first sub-pixel according to an embodiment of the present invention;
FIG. 9 is a schematic diagram illustrating another connection between the second sub-pixel and the first sub-pixel according to an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a first sub-pixel in a first display area according to an embodiment of the present invention;
FIG. 11 is a cross-sectional view taken along the line C1-C2 of FIG. 10;
FIG. 12 is a schematic view illustrating a distance between an edge of a first display region and a bending axis according to an embodiment of the invention;
fig. 13 is a schematic structural diagram of a display device according to an embodiment of the present invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
An embodiment of the present invention provides a display panel, as shown in fig. 1 to 3, fig. 1 is a top view of the display panel provided in the embodiment of the present invention, fig. 2 is a schematic connection diagram of sub-pixels in a first display region provided in the embodiment of the present invention, and fig. 3 is another schematic connection diagram of sub-pixels in the first display region provided in the embodiment of the present invention; the display panel includes: the display area comprises a display area 1, wherein the display area 1 comprises a main display area 2 and at least one auxiliary display area 3, the plane where the main display area 2 is located is intersected with the plane where the auxiliary display area 3 is located, a bending shaft 4 is arranged between the main display area 2 and the auxiliary display area 3, and the main display area 2 and/or the auxiliary display area 3 comprise a first display area 5 close to the bending shaft 4; a sub-pixel 6, the sub-pixel 6 comprising an organic light emitting element 7 and a pixel driving circuit 8, the organic light emitting element 7 comprising an anode 9, a light emitting layer 10 and a cathode 11; in the first display region 5, referring again to fig. 2, the anode 9 of the organic light emitting element 7 and the at least two pixel driving circuits 8 are electrically connected through a connection structure 12, or, referring again to fig. 3, the anode 9 of the organic light emitting element 7 and the anode 9 of at least one other organic light emitting element 7 are electrically connected through a connection structure 12.
It should be noted that the main display area 2 is a front display area, the auxiliary display area 3 is a side display area, and the auxiliary display area 3 is used for displaying auxiliary information such as battery remaining capacity, date, time, prompt information, and the like; in the embodiment of the present invention, the bending axis 4 is defined between the main display area 2 and the auxiliary display area 3 to more clearly illustrate the technical solution of the embodiment of the present invention, in an actual product, the main display area 2 and the auxiliary display area 3 may be two independent display areas with a boundary therebetween, and the main display area 2 and the auxiliary display area 3 may also be continuous display areas without a boundary therebetween.
In addition, it should be noted that the pixel driving circuit 8 specifically includes an active layer 13, a gate layer 14, and a source drain layer 15, and the electrical connection between the anode 9 of the organic light emitting element 7 and the pixel driving circuit 8 specifically means that the anode 9 of the organic light emitting element 7 is electrically connected to the source drain layer 15 in the pixel driving circuit 8.
For the first display region 5 close to the bending axis 4, metal traces in the region, such as metal traces forming the pixel driving circuit 8, or metal traces for providing driving signals to the pixel driving circuit 8, are prone to be broken, so that there is a risk that some of the pixel driving circuits 8 in the region cannot work normally. In the display panel provided in the embodiment of the present invention, in the first display region 5, the anode 9 of the organic light emitting element 7 and the at least two pixel driving circuits 8 are electrically connected through the connection structure 12, so that the organic light emitting element 7 can be driven by the at least two pixel driving circuits 8, and when a certain pixel driving circuit 8 cannot normally operate due to a wire break, the organic light emitting element 7 can still emit light under the driving of the other pixel driving circuits 8 electrically connected thereto; alternatively, by electrically connecting the anode 9 of the organic light emitting element 7 and the anode 9 of at least one other organic light emitting element 7 via the connection structure 12, the organic light emitting element 7 can receive the driving current of the other organic light emitting element 7, and when the pixel driving circuit 8 corresponding to the organic light emitting element 7 fails to operate normally due to disconnection, the organic light emitting element 7 can emit light by the driving current of the other organic light emitting element 7 electrically connected thereto. Therefore, the display panel provided by the embodiment of the invention reduces the risk that the sub-pixel 6 cannot emit light due to disconnection, improves the light emitting reliability of the display area near the bending axis 4, and optimizes the display effect.
In addition, it should be noted that, for the auxiliary display area 3, if the width of the auxiliary display area 3 is larger, the first display area 5 can be regarded as a partial display area close to the bending axis 4 in the auxiliary display area 3, and in this case, the auxiliary display area 3 further includes other display areas far away from the bending axis 4; if the width of the auxiliary display area 3 is small, that is, the pixel driving circuits 8 in the auxiliary display area 3 are all susceptible to the disconnection, then the first display area 5 can also be regarded as the whole display area of the auxiliary display area 3, and at this time, the auxiliary display area 3 only includes the first display area 5.
Alternatively, the connection structure 12 comprises connection traces, that is, in the first display region 5, the anode 9 of the organic light emitting element 7 and the at least two pixel driving circuits 8 are electrically connected through the connection traces, or the anode 9 of the organic light emitting element 7 and the anode 9 of the at least one other organic light emitting element 7 are electrically connected through the connection traces. At this time, the organic light emitting element 7 in the first display region 5 simultaneously receives the driving currents provided by at least two pixel driving circuits 8, and when a certain pixel driving circuit 8 fails to operate normally due to disconnection, the organic light emitting element 7 can still emit light under the driving of other pixel driving circuits 8. When the organic light emitting element 7 is simultaneously driven by at least two pixel driving circuits 8, the same data signal may be supplied to the pixel driving circuit 8 electrically connected to the organic light emitting element 7, so that the pixel driving circuits 8 may output the same driving current.
Alternatively, with reference to fig. 4 and fig. 5, fig. 4 is a schematic connection diagram of a first sub-pixel and a second sub-pixel provided in the embodiment of the present invention, fig. 5 is a cross-sectional view taken along a direction a1-a2 in fig. 4, the sub-pixel 6 includes a first sub-pixel 16 and a second sub-pixel 17, the first sub-pixel 16 is located in the first display region 5, the first sub-pixel 16 includes a first organic light emitting element 18 and a first pixel driving circuit 19, and the second sub-pixel 17 includes a second organic light emitting element 20 and a second pixel driving circuit 21; the anode 9 of the first organic light emitting element 18 and the first pixel driving circuit 19 in the first sub-pixel 16 are electrically connected through a connection trace 22, and the anode 9 of the first organic light emitting element 18 and the second pixel driving circuit 21 in the at least one second sub-pixel 17 are also electrically connected through a connection trace 22. With this arrangement, the first organic light emitting element 18 in the first display area 5 is driven by the second pixel driving circuit 21 of the other second sub-pixel 17 in addition to the first pixel driving circuit 19 of the first sub-pixel 16, and when the first pixel driving circuit 19 fails to work normally due to a wire break, the first organic light emitting element 18 can still emit light under the driving of the second pixel driving circuit 21 electrically connected to the first organic light emitting element 18, so that the influence of the broken metal wire on the light emission of the first sub-pixel 16 in the first display area 5 is reduced.
It should be noted that the first sub-pixel 16 and the second sub-pixel 17 are defined in the embodiment of the invention in order to be clearly defined in the first display region 5, and the first organic light emitting element 18 of the first sub-pixel 16 is electrically connected to the first pixel driving circuit 19 of the sub-pixel 6, and is also electrically connected to the pixel driving circuit 8 of another sub-pixel 6, that is, the sub-pixel 6 which is different from the pixel driving circuit 8 electrically connected to the first organic light emitting element 18 belongs to. If a second sub-pixel 17 electrically connected to a first sub-pixel 16 is also located in the first display region 5, and the organic light emitting device 7 of the second sub-pixel 17 is also electrically connected to the pixel driving circuit 8 of another sub-pixel 6, the second sub-pixel 17 can be regarded as the first sub-pixel 16 compared to the other sub-pixel 6.
In addition, it should be noted that, in the embodiment of the present invention, an accommodation space may be specifically provided for the connection trace 22 by reducing the pixel density or additionally adding a film structure.
Further, referring to fig. 4 again, the display panel further includes a plurality of driving signal lines 23, and the driving signal lines 23 are electrically connected to the pixel driving circuit 8; the first pixel driving circuit 19 and the second pixel driving circuit 21 electrically connected thereto are electrically connected to different driving signal lines 23, that is, the electrically connected first pixel driving circuit 19 and second pixel driving circuit 21 are located in different rows and different columns.
The driving signal line 23 is used to provide a driving signal for driving the pixel driving circuit 8 to operate normally, and the driving signal line 23 may specifically include a gate scanning line, a reference voltage signal line, a light emission control signal line, a data line, and the like. By connecting the electrically connected first pixel driving circuit 19 and second pixel driving circuit 21 to different driving signal lines 23, when the driving signal line 23 electrically connected to the first pixel driving circuit 19 is disconnected, the second pixel driving circuit 21 can still normally operate under the driving of the other driving signal lines 23 electrically connected thereto, and supply a driving current to the first organic light emitting element 18, thereby ensuring the first organic light emitting element 18 to emit light.
Alternatively, the connection structure 12 includes a connection switch, that is, in the first display region 5, the anode 9 of the organic light emitting element 7 and the at least two pixel driving circuits 8 are electrically connected through the connection switch, or the anode 9 of the organic light emitting element 7 and the anode 9 of the at least one other organic light emitting element 7 are electrically connected through the connection switch. At this time, when a certain pixel driving circuit 8 cannot normally operate due to disconnection, the connection switch is controlled to be turned on, so that the organic light emitting element 7 corresponding to the pixel driving circuit 8 receives the driving current provided by the other pixel driving circuits 8, and normal light emission is ensured.
Before the display panel is put into use, a dot-screen test is performed to test whether a sub-pixel 6 incapable of emitting light normally due to disconnection exists in the display panel, and if the sub-pixel 6 does not emit light normally, the connection switch between the organic light emitting element 7 in the sub-pixel 6 and the other pixel driving circuit 8 or the other organic light emitting element 7 is controlled to be turned on, so that the display panel is put into use, and the number of sub-pixels 6 incapable of emitting light in the use process of the display panel is reduced or eliminated.
Alternatively, as shown in fig. 6 and 7, fig. 6 is another connection schematic diagram of the first sub-pixel and the second sub-pixel provided in the embodiment of the present invention, fig. 7 is a cross-sectional view taken along a direction B1-B2 in fig. 6, the sub-pixel 6 includes a first sub-pixel 16 and a second sub-pixel 17, the first sub-pixel 16 is located in the first display region 5, the first sub-pixel 16 includes a first organic light emitting element 18 and a first pixel driving circuit 19, and the second sub-pixel 17 includes a second organic light emitting element 20 and a second pixel driving circuit 21; the anode 9 of the first organic light emitting element 18 and the anode 9 of the second organic light emitting element 20 in the at least one second sub-pixel 17 are electrically connected through a connection switch 24. With this arrangement, when the first pixel driving circuit 19 of a first sub-pixel 16 fails to operate normally due to a wire break, the connection switch 24 can be used to control the conduction of the connection path between the first organic light emitting element 18 and the second organic light emitting element 20 of the first sub-pixel 16, so that the first organic light emitting element 18 emits light under the action of the driving current received by the second organic light emitting element 20.
Further, referring to fig. 7 again, the connection switch 24 includes a switch active layer 25, a switch gate 26, a switch source 27 and a switch drain 28; the switching active layer 25 is electrically connected to the anode 9 of the first organic light emitting element 18 and the anode 9 of the second organic light emitting element 20, the anode 9 of the first organic light emitting element 18 and the anode 9 of the second organic light emitting element 20 are a switching source electrode 27 and a switching drain electrode 28, respectively, and the switching gate electrode 26 and the control signal line are electrically connected (not shown in the figure). When the first pixel driving circuit 19 of a first sub-pixel 16 fails to operate normally, the control signal line provides a conducting signal to the switching gate 26 of the connection switch 24 corresponding to the first organic light emitting element 18 in the first sub-pixel 16, so that the switching active layer 25 connects the anode 9 of the first organic light emitting element 18 and the anode 9 of the second organic light emitting element 20, and the connection path between the first organic light emitting element 18 and the second organic light emitting element 20 is conducted.
Further, referring to fig. 7 again, the switch active layer 25 and the anode 9 are disposed in the same layer, which not only ensures stable electrical connection between the switch active layer 25 and the anodes 9 of the first organic light emitting element 18 and the second organic light emitting element 20, but also prevents the switch active layer 25 from occupying additional film space and reducing the thickness of the display panel; the pixel driving circuit 8 comprises an active layer 13, a gate layer 14 and a source drain layer 15, and a switching gate 26 is located between the anode 9 and the source drain layer 15 to ensure that the switching gate 26 and the switching active layer 25 are close to each other and the operation reliability of the connecting switch 24 is ensured.
Alternatively, referring to fig. 6 again, the electrically connected first sub-pixel 16 and the electrically connected second sub-pixel 17 are disposed adjacently, and the color of the light emitted by the electrically connected first sub-pixel 16 and the electrically connected second sub-pixel 17 is the same. When the first pixel driving circuit 19 in the first sub-pixel 16 can normally operate, the first sub-pixel 16 and the second sub-pixel 17 are two sub-pixels 6 that independently emit light, and when the first pixel driving circuit 19 in the first sub-pixel 16 cannot normally operate due to disconnection, the first sub-pixel 16 and the second sub-pixel 17 can be combined into one sub-pixel 6, and by arranging the first sub-pixel 16 and the second sub-pixel 17 adjacently and making the light emission colors the same, the accuracy of the light emission of the combined sub-pixels 6 can be improved, and the color mixing can be reduced.
Optionally, with reference to fig. 1, as shown in fig. 8 and fig. 9, fig. 8 is another connection schematic diagram of the second sub-pixel of the first sub-pixel provided in the embodiment of the present invention, fig. 9 is another connection schematic diagram of the second sub-pixel of the first sub-pixel provided in the embodiment of the present invention, the main display area 2 and/or the auxiliary display area 3 further includes a second display area 29, and the second display area 29 is located on a side of the first display area 5 away from the bending axis 4; the second sub-pixel 17 electrically connected to the first sub-pixel 16 is located in the second display region 29. Since the second display region 29 is far from the bending axis 4, the risk of wire breakage of the metal wires in the second display region 29 is low, the working stability of the pixel driving circuit 8 in the second display region 29 is high, and the reliability of light emission of the first organic light emitting element 18 under the driving of the second pixel driving circuit 21 can be improved by positioning the second sub-pixel 17 electrically connected with the first sub-pixel 16 in the second display region 29.
Alternatively, as shown in fig. 10 and fig. 11, fig. 10 is a schematic structural diagram of a first sub-pixel in a first display region according to an embodiment of the present invention, fig. 11 is a cross-sectional view taken along a direction C1-C2 of fig. 10, the sub-pixel 6 includes a first sub-pixel 16, the first sub-pixel 16 is located in the first display region 5, and the first sub-pixel 16 includes a first organic light emitting element 18 and at least two first pixel driving circuits 19; the connection structure 12 comprises connection tracks 22; the first organic light emitting element 18 and at least two pixel driving circuits 8 of the first sub-pixel 16 are electrically connected through a connection trace 22.
In this arrangement, each first sub-pixel 16 includes at least two first pixel driving circuits 19, and the first organic light emitting element 18 emits light under the driving of at least two first pixel driving circuits 19, even if there is a first pixel driving circuit 19 that cannot operate normally, the first organic light emitting element 18 can also emit light under the driving of another first pixel driving circuit 19.
Further, referring to fig. 10 and 11 again, the main display area 2 and/or the auxiliary display area 3 further include a second display area 29, and the second display area 29 is located on a side of the first display area 5 away from the bending axis 4; the sub-pixel 6 further comprises a second sub-pixel 17, the second sub-pixel 17 being located in a second display region 29, the second sub-pixel 17 comprising a second organic light emitting element 20 and a second pixel driving circuit 21; the first pixel density of the first sub-pixel 16 in the first display region 5 is less than the second pixel density of the second sub-pixel 17 in the second display region 29, and the light emitting area of the single first organic light emitting element 18 is larger than the light emitting area of the single second organic light emitting element 20. The first pixel driving circuit 19 can be provided at a position reserved for each first sub-pixel 16 by reducing the first pixel density and increasing the light emitting area of the first organic light emitting element 18.
Further, the first sub-pixel 16 includes two first pixel driving circuits 19, and the first pixel density is half of the second pixel density, so that the pixel density difference between the first display area 5 and the second display area 29 can be avoided, and the influence of the first display area 5 on the whole display screen can be reduced.
Alternatively, as shown in fig. 12, fig. 12 is a schematic diagram of a distance between an edge of the first display area and the bending axis according to the embodiment of the present invention, the first display area 5 includes a first edge 30 and a second edge 31 that are oppositely disposed, the second edge 31 is located on a side of the first edge 30 away from the bending axis 4, a distance between the second edge 31 and the bending axis 4 is L, and L is less than or equal to 3 mm. Setting the maximum value of L to 3mm can reduce the risk that the sub-pixel 6 near the bending axis 4 cannot emit light due to a broken line, and can also avoid the first display region 5 from being too wide, and avoid adjusting the setting mode of the sub-pixel 6 in the display region that is not affected by the broken line.
As shown in fig. 13, fig. 13 is a schematic structural diagram of a display device according to an embodiment of the present invention, and the display device includes the display panel 100. The specific structure of the display panel 100 has been described in detail in the above embodiments, and is not described herein again. Of course, the display device shown in fig. 13 is only a schematic illustration, and the display device may be any electronic device with a display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic book, or a television.
Since the display device provided by the embodiment of the invention includes the display panel 100, the display device can reduce the risk that the sub-pixel 6 cannot emit light due to disconnection, improve the light emission reliability of the display region near the bending axis 4, and optimize the display effect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (11)
1. A display panel, comprising:
the display area comprises a main display area and at least one auxiliary display area, the plane of the main display area is intersected with the plane of the auxiliary display area, a bending axis is arranged between the main display area and the auxiliary display area, and the main display area and/or the auxiliary display area comprise a first display area close to the bending axis;
a sub-pixel including an organic light emitting element including an anode, a light emitting layer, and a cathode, and a pixel driving circuit;
wherein, in the first display region, the anode of the organic light emitting element adopts any one of the following four connection modes:
the first connection mode is as follows: in the first display area, the anode of the organic light emitting element and at least two of the pixel driving circuits are electrically connected through a connection structure, the connection structure includes a connection trace, the sub-pixel includes a first sub-pixel and a second sub-pixel, the first sub-pixel is located in the first display area, the first sub-pixel includes a first organic light emitting element and a first pixel driving circuit, and the second sub-pixel includes a second organic light emitting element and a second pixel driving circuit; the anode of the first organic light-emitting element is electrically connected with the first pixel driving circuit in the first sub-pixel through the connecting wire, and the anode of the first organic light-emitting element is also electrically connected with the second pixel driving circuit in at least one second sub-pixel through the connecting wire;
the second connection mode is as follows: in the first display region, the anode of the organic light emitting element and at least two of the pixel driving circuits are electrically connected through a connection structure including a connection switch;
the third connection mode is as follows: in the first display region, the anode of the organic light emitting element and the anode of at least one other of the organic light emitting elements are electrically connected through a connection structure including a connection switch;
the fourth connection mode is as follows: in the first display region, the anode of the organic light emitting element and at least two of the pixel driving circuits are electrically connected through a connection structure, the sub-pixel includes a first sub-pixel located in the first display region, and the first sub-pixel includes a first organic light emitting element and at least two of the first pixel driving circuits; the connecting structure comprises a connecting wire; the first organic light-emitting element is electrically connected with the at least two pixel driving circuits of the first sub-pixel through the connecting wiring.
2. The display panel according to claim 1, wherein in the first connection mode, the display panel further comprises a plurality of driving signal lines electrically connected to the pixel driving circuits;
wherein the first pixel driving circuit and the second pixel driving circuit electrically connected thereto are electrically connected to different ones of the driving signal lines.
3. The display panel according to claim 1, wherein in the third connection mode, the sub-pixel includes a first sub-pixel and a second sub-pixel, the first sub-pixel is located in the first display region, the first sub-pixel includes a first organic light emitting element and a first pixel driving circuit, and the second sub-pixel includes a second organic light emitting element and a second pixel driving circuit;
the anode of the first organic light emitting element and the anode of the second organic light emitting element in at least one of the second sub-pixels are electrically connected through the connection switch.
4. The display panel according to claim 3, wherein the connection switch comprises a switch active layer, a switch gate electrode, a switch source electrode, and a switch drain electrode;
wherein the switch active layer is electrically connected to the anode of the first organic light emitting element and the anode of the second organic light emitting element, respectively, the anode of the first organic light emitting element and the anode of the second organic light emitting element are the switch source electrode and the switch drain electrode, respectively, and the switch gate electrode is electrically connected to the control signal line.
5. The display panel according to claim 4,
the switch active layer and the anode are arranged in the same layer;
the pixel driving circuit comprises an active layer, a grid layer and a source drain layer, and the switch grid is positioned between the anode and the source drain layer.
6. The display panel according to claim 3, wherein the electrically connected first and second sub-pixels are disposed adjacent to each other, and wherein the electrically connected first and second sub-pixels emit light of the same color.
7. A display panel as claimed in claim 1 or 3 characterized in that the main display area and/or the auxiliary display area further comprises a second display area on a side of the first display area facing away from the bending axis;
the second sub-pixel electrically connected with the first sub-pixel is located in the second display region.
8. The display panel according to claim 1,
in the fourth connection mode, the main display area and/or the auxiliary display area further include a second display area, and the second display area is located on one side of the first display area away from the bending axis;
the sub-pixel further comprises a second sub-pixel, the second sub-pixel is positioned in the second display area, and the second sub-pixel comprises a second organic light-emitting element and a second pixel driving circuit;
the first pixel density of the first sub-pixels in the first display area is smaller than the second pixel density of the second sub-pixels in the second display area, and the light-emitting area of the single first organic light-emitting element is larger than that of the single second organic light-emitting element.
9. The display panel according to claim 8, wherein the first sub-pixel comprises two of the first pixel driving circuits, and wherein the first pixel density is half of the second pixel density.
10. The display panel according to claim 1, wherein the first display region comprises a first edge and a second edge which are oppositely arranged, the second edge is located on the side of the first edge far away from the bending axis, the distance between the second edge and the bending axis is L, and L is less than or equal to 3 mm.
11. A display device comprising the display panel according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911306805.8A CN110931537B (en) | 2019-12-18 | 2019-12-18 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911306805.8A CN110931537B (en) | 2019-12-18 | 2019-12-18 | Display panel and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110931537A CN110931537A (en) | 2020-03-27 |
| CN110931537B true CN110931537B (en) | 2022-03-04 |
Family
ID=69864215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911306805.8A Active CN110931537B (en) | 2019-12-18 | 2019-12-18 | Display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110931537B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111785738B (en) * | 2020-07-15 | 2022-06-21 | 武汉天马微电子有限公司 | Display panel and display device |
| GB2623630A (en) * | 2023-08-21 | 2024-04-24 | Lg Display Co Ltd | Display device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600091A (en) * | 2013-10-31 | 2015-05-06 | 乐金显示有限公司 | Organic light emitting display device and method for manufacturing the same |
| CN104680973A (en) * | 2013-11-26 | 2015-06-03 | 乐金显示有限公司 | Organic light emitting display device and method of driving the same |
| CN105225632A (en) * | 2014-05-30 | 2016-01-06 | 乐金显示有限公司 | Organic light-emitting display device and pixel repairing method |
| CN107293570A (en) * | 2017-05-12 | 2017-10-24 | 上海天马微电子有限公司 | A kind of display panel and display device |
| CN107819009A (en) * | 2016-09-13 | 2018-03-20 | 三星显示有限公司 | Display device |
| CN108648631A (en) * | 2018-06-14 | 2018-10-12 | 昆山国显光电有限公司 | Flexible display panels and display device |
| CN109560111A (en) * | 2018-11-30 | 2019-04-02 | 厦门天马微电子有限公司 | Organic light emitting display panel and display device |
| WO2019107061A1 (en) * | 2017-11-28 | 2019-06-06 | 株式会社ジャパンディスプレイ | Display device |
| CN110085646A (en) * | 2019-05-07 | 2019-08-02 | 上海天马有机发光显示技术有限公司 | Organic light emitting display panel and display device |
| CN110580873A (en) * | 2019-09-30 | 2019-12-17 | 武汉天马微电子有限公司 | Display panel and display device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102232694B1 (en) * | 2014-12-03 | 2021-03-29 | 삼성디스플레이 주식회사 | Organic Light Emitting Display Panel and Manufacturing Method Thereof |
| WO2017094604A1 (en) * | 2015-12-02 | 2017-06-08 | シャープ株式会社 | Flexible display device and method for detecting bending state thereof |
| KR102505585B1 (en) * | 2015-12-31 | 2023-03-02 | 엘지디스플레이 주식회사 | Organic light emitting display panel and organic light emitting display device |
| CN108807485B (en) * | 2018-06-25 | 2020-12-29 | 武汉天马微电子有限公司 | Display panel and display device |
| CN109004012B (en) * | 2018-08-03 | 2020-12-04 | 上海天马有机发光显示技术有限公司 | Display panel and display device thereof |
-
2019
- 2019-12-18 CN CN201911306805.8A patent/CN110931537B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600091A (en) * | 2013-10-31 | 2015-05-06 | 乐金显示有限公司 | Organic light emitting display device and method for manufacturing the same |
| CN104680973A (en) * | 2013-11-26 | 2015-06-03 | 乐金显示有限公司 | Organic light emitting display device and method of driving the same |
| CN105225632A (en) * | 2014-05-30 | 2016-01-06 | 乐金显示有限公司 | Organic light-emitting display device and pixel repairing method |
| CN107819009A (en) * | 2016-09-13 | 2018-03-20 | 三星显示有限公司 | Display device |
| CN107293570A (en) * | 2017-05-12 | 2017-10-24 | 上海天马微电子有限公司 | A kind of display panel and display device |
| WO2019107061A1 (en) * | 2017-11-28 | 2019-06-06 | 株式会社ジャパンディスプレイ | Display device |
| CN108648631A (en) * | 2018-06-14 | 2018-10-12 | 昆山国显光电有限公司 | Flexible display panels and display device |
| CN109560111A (en) * | 2018-11-30 | 2019-04-02 | 厦门天马微电子有限公司 | Organic light emitting display panel and display device |
| CN110085646A (en) * | 2019-05-07 | 2019-08-02 | 上海天马有机发光显示技术有限公司 | Organic light emitting display panel and display device |
| CN110580873A (en) * | 2019-09-30 | 2019-12-17 | 武汉天马微电子有限公司 | Display panel and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110931537A (en) | 2020-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11688336B2 (en) | Array substrate, display panel, spliced display panel and display driving method | |
| CN106952940B (en) | Organic light-emitting display panel and organic light-emitting display device | |
| CN110190103B (en) | Display panel and display device | |
| CN111028692A (en) | Display panel and display device | |
| US20200350375A1 (en) | Organic light-emitting display panel and display apparatus | |
| CN110931537B (en) | Display panel and display device | |
| CN110265448B (en) | Display panel and display device | |
| CN108511496B (en) | Organic light-emitting display panel and organic light-emitting display device | |
| US10991789B2 (en) | Foldable display device having plurality of signal lines connected to non-foldable display regions | |
| CN110634922A (en) | Display panel and display device | |
| CN114530473A (en) | Display panel, manufacturing method thereof and display device | |
| CN114255671A (en) | Micro light-emitting diode display panel and display device | |
| CN114743471A (en) | OLED display panel and display device | |
| CN113724651A (en) | Array substrate and display panel | |
| US20230157108A1 (en) | Organic light-emitting diode display panel and display device | |
| CN109904205B (en) | Display panel and display device | |
| US20230197735A1 (en) | Driving back plate, display panel, and preparation method therefor | |
| CN109713015B (en) | Display panel and display terminal | |
| CN113485586B (en) | Touch display panel | |
| CN113299232A (en) | Display panel, driving method thereof and display device | |
| CN111653685A (en) | Display back plate, display panel and display device | |
| CN113196492A (en) | Display panel and display device | |
| US20230422578A1 (en) | Display panels and methods of manufacturing the same, and display apparatuses | |
| CN113096582B (en) | Display panel and display device | |
| CN114385044B (en) | Touch display panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |