CN116682370A - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN116682370A
CN116682370A CN202310769109.0A CN202310769109A CN116682370A CN 116682370 A CN116682370 A CN 116682370A CN 202310769109 A CN202310769109 A CN 202310769109A CN 116682370 A CN116682370 A CN 116682370A
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CN
China
Prior art keywords
group
light
emitting element
pixel circuit
light emitting
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.)
Pending
Application number
CN202310769109.0A
Other languages
Chinese (zh)
Inventor
吴加铅
郑艺芬
黄敏
黄建才
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Tianma Microelectronics Co Ltd
Original Assignee
Xiamen Tianma Microelectronics Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xiamen Tianma Microelectronics Co Ltd filed Critical Xiamen Tianma Microelectronics Co Ltd
Priority to CN202310769109.0A priority Critical patent/CN116682370A/en
Publication of CN116682370A publication Critical patent/CN116682370A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • G09G3/3233—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 with pixel circuitry controlling the current through the light-emitting element
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The embodiment of the invention discloses a display panel and a display device. The display panel also comprises a first sub-pixel group positioned in the first display area and a second sub-pixel group positioned in at least the second display area, wherein the first sub-pixel group comprises a first light-emitting element group and a first pixel circuit group which are connected, the second sub-pixel group comprises a second light-emitting element group and a second pixel circuit group which are connected, the light-emitting area of the light-emitting element in the first light-emitting element group is smaller than the light-emitting area of the light-emitting element in the second light-emitting element group, the driving current of the first pixel circuit group is larger than the driving current of the second pixel circuit group, so that the first sub-pixel group is controlled to emit light through the first pixel circuit group with larger driving current, and the second sub-pixel group is controlled to emit light through the second pixel circuit group with smaller driving current, so that the brightness difference of the first light-emitting element group and the second light-emitting element group is improved, and the display effect is improved.

Description

Display panel and display device
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel and a display device.
Background
When the existing display panel is designed by adopting the special-shaped structure, the corner area or the middle area of the display panel can be cut to form a special-shaped display area with special-shaped boundaries. The light emitting area of the light emitting element of the cut area is smaller than that of the light emitting element of the uncut area, and the display effect of the display panel is affected.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, which are used for improving the brightness difference of a first light-emitting element group in a first display area and a second light-emitting element group in a second display area of the display panel and improving the display effect of the display panel.
In a first aspect, an embodiment of the present invention provides a display panel, where the display panel includes a first display area and a second display area, and the first display area includes a special-shaped boundary of the display panel;
the display panel further comprises a first sub-pixel group and a second sub-pixel group, wherein the first sub-pixel group is positioned in the first display area and the second sub-pixel group is positioned in at least the second display area, the first sub-pixel group comprises a first light-emitting element group and a first pixel circuit group which are connected, the second sub-pixel group comprises a second light-emitting element group and a second pixel circuit group which are connected, and the light-emitting area of a light-emitting element in the first light-emitting element group is smaller than the light-emitting area of a light-emitting element in the second light-emitting element group;
The driving current of the first pixel circuit group is larger than the driving current of the second pixel circuit group.
In a second aspect, an embodiment of the present invention further provides a display apparatus, including the display panel in the first aspect.
The display panel provided by the invention comprises a first display area and a second display area, wherein the first display area comprises a special-shaped boundary of the display panel, a first sub-pixel group of the first display area and a second sub-pixel group at least positioned in the second display area, the first sub-pixel group comprises a first light-emitting element group and a first pixel circuit group which are connected, the second sub-pixel group comprises a second light-emitting element group and a second pixel circuit group which are connected, the light-emitting area of a light-emitting element in the first light-emitting element group is smaller than the light-emitting area of the light-emitting element in the second light-emitting element group, the driving current of the first pixel circuit group is larger than the driving current of the second pixel circuit group, the first light-emitting element group with smaller light-emitting area is positioned in the first display area, the second light-emitting element group with larger light-emitting area is positioned in the second display area, the first light-emitting element group is electrically connected with the first pixel circuit group, the second light-emitting element group is electrically connected with the second pixel circuit group, the first pixel circuit group and the second pixel circuit group is further independently controlled, so that the difference effect of the first pixel group and the second pixel group in the first display area is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, a brief description will be given below of the drawings required for the embodiments or the description of the prior art, and it is obvious that although the drawings in the following description are specific embodiments of the present invention, it is obvious to those skilled in the art that the basic concepts of the device structure, the driving method and the manufacturing method, which are disclosed and suggested according to the various embodiments of the present invention, are extended and extended to other structures and drawings, and it is needless to say that these should be within the scope of the claims of the present invention.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of area A of FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along the direction BB' in FIG. 2;
fig. 4 is a circuit diagram of a first pixel circuit group and a second pixel circuit group according to an embodiment of the present invention;
FIG. 5 is another enlarged schematic view of area A of FIG. 1;
FIG. 6 is an enlarged schematic view of region C of FIG. 1;
FIG. 7 is a schematic cross-sectional view taken along DD' in FIG. 6;
FIG. 8 is another enlarged schematic view of area A of FIG. 1;
FIG. 9 is another enlarged schematic view of region C of FIG. 1;
FIG. 10 is a schematic diagram of another display panel according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described by means of implementation examples with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the basic concepts disclosed and suggested by the embodiments of the present invention are within the scope of the present invention.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention, fig. 2 is an enlarged schematic view of a region a in fig. 1, and fig. 3 is a schematic sectional view along a BB' direction in fig. 2. Referring to fig. 1, 2 and 3, the display panel includes a first display area AA and a second display area BB, the first display area AA includes a shaped boundary of the display panel, the display panel further includes a first subpixel group 10 located in the first display area AA and a second subpixel group 20 located at least in the second display area BB, wherein the first subpixel group 10 includes a first light emitting element group 110 and a first pixel circuit group 120 connected, the second subpixel group 20 includes a second light emitting element group 210 and a second pixel circuit group 220 connected, and a light emitting area of a light emitting element in the first light emitting element group 110 is smaller than a light emitting area of a light emitting element in the second light emitting element group 210. The driving current of the first pixel circuit group 120 is greater than the driving current of the second pixel circuit group 220.
Specifically, as shown in fig. 1 to 3, the display panel includes a first display area AA and a second display area BB. The first display area AA may be a special-shaped display area, that is, the first display area AA includes a special-shaped boundary of the display panel, and when the display panel is cut along the special-shaped boundary, the sub-pixels located at the position of the special-shaped boundary are cut to form a first sub-pixel group 10, in other words, the first display area AA is provided with the first sub-pixel group 10, and the first sub-pixel group 10 is located at the position of the special-shaped boundary of the first display area AA. The second display area BB may be a non-shaped display area, i.e. the second display area BB does not include the first sub-pixel group 10 after being cut, and only includes the second sub-pixel group 20 after being cut.
The first subpixel group 10 is located at the special-shaped boundary of the first display area AA and includes a first light-emitting element group 110 and a first pixel circuit group 120 connected. The second subpixel group 20 is located in the first display area AA and the second display area BB, and includes a second light emitting element group 210 and a second pixel circuit group 220 connected. Since the first sub-pixel group 10 is formed after being cut, the light emitting area of the light emitting elements in the cut first light emitting element group 110 is smaller than the light emitting area of the light emitting elements in the uncut second light emitting element group 210.
The display panel further includes a substrate 01, and a driving circuit layer 02 on one side of the substrate 01, and the first pixel circuit group 120 and the second pixel circuit group 220 are both located on the driving circuit layer 02. The first pixel circuit group 120 is configured to provide a driving current for the first light emitting element group 110, the second pixel circuit group 220 is configured to provide a driving circuit for the second light emitting element group 210, each of the first pixel circuit group 120 and the second pixel circuit group 220 includes a plurality of pixel driving circuits, each pixel driving circuit includes at least one thin film transistor, and the structure of the thin film transistor may be a top gate structure or a bottom gate structure. Here, the structure of the thin film transistor T is not limited. As shown in fig. 3, if the structure of the thin film transistor is a top gate structure, the driving circuit layer 02 is directed along the substrate 01 in the direction of the driving circuit layer 02, where the driving circuit layer 02 includes a buffer layer, an active layer, a first insulating layer, a gate metal layer, a second insulating layer, and a source-drain metal layer that are sequentially stacked, a channel of the thin film transistor is located in the active layer, a gate of the thin film transistor is located in the gate metal layer, and a source and a drain of the thin film transistor are located in the source-drain metal layer.
The light emitting elements in the first light emitting element group 110 include a light emitting body (not shown in the drawing), a first electrode (not shown in the drawing), and a second electrode (not shown in the drawing). The light-emitting body comprises a first semiconductor layer, a light-emitting composite layer and a second semiconductor layer, wherein the first electrode is electrically connected with the first semiconductor layer, and the second electrode is electrically connected with the second semiconductor layer.
The first semiconductor layer may be a P-type semiconductor layer, and the corresponding first electrode may be a P-type electrode or an anode electrode, which is electrically connected to the first pixel circuit group 120 to provide holes to the P-type semiconductor layer. The second semiconductor layer may be an N-type semiconductor layer, and the corresponding second electrode may be an N-type electrode or a cathode electrode, which is electrically connected to the first pixel circuit group 120 to supply electrons to the N-type semiconductor layer. Electrons and holes are combined to emit light in the light-emitting composite layer, so that the light-emitting element can display normal light. The arrangement of the light emitting elements in the second light emitting element group 210 is the same as the arrangement of the light emitting elements in the first light emitting element group 110, and will not be described in detail here.
In the prior art, for the first light emitting element group 110 located at the special-shaped boundary of the first display area AA and the second light emitting element group 210 located at least the second display area BB, the same driving current is generally used to perform light emission control, so that the light emitting area of the light emitting elements in the first light emitting element group 110 is different from the light emitting area of the light emitting elements in the second light emitting element group 210, which results in a difference between the light emitting brightness of the non-linear boundary of the first display area AA and the light emitting brightness of other positions, resulting in poor display effect of the display panel.
Therefore, the first pixel circuit group 120 connected with the first light emitting element group 110 is independently controllable, and the second pixel circuit group 220 connected with the second light emitting element group 210 is independently controllable, i.e. the first pixel circuit group 120 provides driving current to the first light emitting element group 110, the second pixel circuit group 220 provides driving current to the second light emitting element group 210, and further the driving current of the first pixel circuit group 120 is set to be larger than that of the second pixel circuit group 220, so that the light emitting brightness of the first light emitting element group 110 with smaller light emitting area is similar to the light emitting brightness of the second light emitting element group 210 with larger light emitting area, the brightness difference between the special boundary position in the first display area AA and other positions in the first display area AA and the second display area BB is improved, and the display effect of the display panel is improved.
It should be noted that, in fig. 3, the display panel is exemplified as a MICRO-LED display panel, which is not limited by the present invention, and in other embodiments, the display panel may be an OLED display panel, which may be set by those skilled in the art as required.
In summary, the display panel provided by the embodiment of the invention comprises a first display area and a second display area, wherein the first display area comprises a special-shaped boundary of the display panel, a first sub-pixel group of the first display area and a second sub-pixel group at least positioned in the second display area, the first sub-pixel group comprises a first light emitting element group and a first pixel circuit group which are connected, the second sub-pixel group comprises a second light emitting element group and a second pixel circuit group which are connected, the light emitting area of a light emitting element in the first light emitting element group is smaller than the light emitting area of a light emitting element in the second light emitting element group, and the driving current of the first pixel circuit group is larger than the driving current of the second pixel circuit group. Therefore, the first pixel circuit group and the second pixel circuit group are independently controllable, namely, the driving current of the first pixel circuit group is larger than that of the second pixel circuit group, so that the light-emitting brightness of the first light-emitting element group with smaller light-emitting area is similar to that of the second light-emitting element group with larger light-emitting area, the brightness difference between the special-shaped boundary position in the first display area and other positions of the first display area and the second display area is improved, and the display effect of the display panel is improved.
Optionally, fig. 4 is a circuit diagram of a first pixel circuit group and a second pixel circuit group according to an embodiment of the present invention, as shown in fig. 4, the display panel further includes a power signal line group 30, the power signal line group includes a first power signal line group 310 and a second power signal line group 320, the first power signal line group 310 includes a first positive power signal line PVDD1 and a first negative power signal line PVEE1, the second power signal line group 320 includes a second positive power signal line PVDD2 and a second negative power signal line PVEE2, the first positive power signal line PVDD1 and the first negative power signal line PVEE2 are electrically connected to the first pixel circuit group 120, and the second positive power signal line PVDD1 and the second negative power signal line PVEE2 are electrically connected to the second pixel circuit group 220. The voltage in the first positive power signal line PVDD1 and the voltage in the first negative power signal line PVEE1 have a first difference value, the voltage in the second positive power signal line PVDD2 and the voltage in the second negative power signal line PVEE2 have a second difference value, and the first difference value is greater than the second difference value.
Specifically, as shown in fig. 4, the first power signal line set 310 is electrically connected to the first pixel circuit set 120, the first pixel circuit set 120 is electrically connected to the first light emitting element set 110, and a power voltage is provided to the first light emitting element set 110 through the first power signal line set 310. The first power signal line set 310 includes a first positive power signal line PVDD1 and a first negative power signal line PVEE1, and provides a first positive power voltage and a first negative power voltage to the first light emitting element set 110, respectively. The second power signal line group 320 is electrically connected to the second pixel circuit group 220, and the second pixel circuit group 220 is electrically connected to the second light emitting element group 210, so that a power voltage is provided through the second power signal line group 320. The second power signal line set 320 includes a second positive power signal line PVDD2 and a second negative power signal line PVEE2, and provides a second positive power voltage and a second negative power voltage to the second light emitting element set 210, respectively. The first positive power supply voltage and the first negative power supply voltage have a first difference value, the second positive power supply voltage and the second negative power supply voltage have a second difference value, and the first difference value is greater than the second difference value, so that the voltage difference provided by the first power signal line group 310 for the first light emitting element group 110 is greater than the voltage difference provided by the second power signal line group 320 for the second light emitting element group 210, so that the driving current of the first pixel circuit group 120 is greater than the driving current of the second pixel circuit group 220, and the light emitting area of the light emitting elements in the first light emitting element group 110 is smaller than the light emitting area of the light emitting elements in the second light emitting element group 210, and therefore, the light emitting brightness of the light emitting elements in the first light emitting element group 110 is similar to the light emitting brightness of the light emitting elements in the second light emitting element group 210, the special-shaped boundary position in the first display area and the brightness difference between other positions of the first display area and the second display area can be improved, and the display effect of the display panel is improved.
Optionally, based on the above embodiment, the voltage in the first positive power supply signal line PVDD1 is greater than the voltage in the second positive power supply signal line PVEE1, and/or the voltage in the first negative power supply signal line PVEE1 is less than the voltage in the second negative power supply signal line PVEE 2.
Specifically, since the light emitting area of the light emitting element in the first light emitting element group 110 is smaller than the light emitting area of the light emitting element in the second light emitting element group 210, in order to ensure that the light emitting luminance of the light emitting element in the first light emitting element group 110 is similar to the light emitting luminance of the light emitting element in the second light emitting element group 210, the voltage difference of the first power signal line group 310 may be set to be larger than the voltage difference provided by the second power signal line group 320. That is, the voltage in the first positive power supply signal line PVDD1 is greater than the voltage in the second positive power supply signal line PVEE1, or the voltage in the first negative power supply signal line PVEE1 is less than the voltage in the second negative power supply signal line PVEE2, or the voltage in the first positive power supply signal line PVDD1 is greater than the voltage in the second positive power supply signal line PVEE1, and the voltage in the first negative power supply signal line PVEE1 is less than the voltage in the second negative power supply signal line PVEE 2. The above arrangement manner can make the voltage difference of the first power signal line set 310 larger than the voltage difference provided by the second power signal line set 320, so as to improve the brightness difference between the special-shaped boundary position in the first display area and other positions of the first display area as well as the second display area, and improve the display effect of the display panel.
In still another embodiment, with continued reference to fig. 4, the display panel further includes a light emission control signal line group 40, and the light emission control signal line group 40 includes a first light emission control signal line EMIT1 and a second light emission control signal line EMIT2. The first emission control signal line EMIT1 is electrically connected to the first pixel circuit group 120 for providing a first emission control signal to the first pixel circuit group 120, and the second emission control signal line EMIT2 is electrically connected to the second pixel circuit group 220 for providing a second emission control signal to the second pixel circuit 220, wherein a duty ratio of an enable signal in the first emission control signal is greater than a duty ratio of an enable signal in the second emission control signal.
Specifically, as shown in fig. 2 and 4, the emission control signal line group 40 includes a first emission control signal line EMIT1 and a second emission control signal line EMIT2, and the first pixel circuit group 120 and the second pixel circuit group 220 each include an emission control module including a first transistor M1 and a sixth transistor M6. The first transistor M1 and the sixth transistor M6 in the first pixel circuit group 120 are located between the first positive power signal line PVDD1 and the first negative power signal line PVEE1, the first light emitting control signal line EMIT1 is electrically connected to the control end of the first transistor M1 and the control end of the sixth transistor M6 in the first pixel circuit group 120, the first pixel circuit group 120 is electrically connected to the first light emitting element group 110, and further the first light emitting control signal outputted by the first light emitting control signal line EMIT1 controls the working state of the light emitting stage of the first light emitting element group 110. The first transistor M1 and the sixth transistor M6 in the second pixel circuit group 220 are located between the second positive power signal line PVDD2 and the second negative power signal line PVEE2, the second emission control signal line EMIT2 is electrically connected to the control terminal of the first transistor M1 and the control terminal of the sixth transistor M6 in the second pixel circuit group 220, the second pixel circuit group 220 is electrically connected to the second light emitting element group 210, and further the second emission control signal outputted through the second emission control signal line EMIT2 controls the working state of the light emitting stage of the second light emitting element group 210. The duty ratio of the enable signal in the first light-emitting control signal is greater than that of the enable signal in the second light-emitting control signal, and since the light-emitting area of the light-emitting element in the first light-emitting element group 110 is smaller than that of the light-emitting element in the second light-emitting element group 210, the light-emitting brightness of the light-emitting element in the first light-emitting element group 110 is similar to that of the light-emitting element in the second light-emitting element group 210, so that the brightness difference between the special-shaped boundary position in the first display area and other positions in the first display area and the second display area is improved, and the display effect of the display panel is improved.
It should be noted that, as shown in fig. 2 and fig. 4, the first pixel circuit group 120 further includes a driving module, a data writing module, a threshold compensation module, a first initialization module, and a second initialization module. The driving module includes a third transistor M3, the data writing module includes a second transistor M2, an input end of the second transistor M2 is connected with the data signal end Vdata, the threshold compensation module includes a fourth transistor M4, a control end of the fourth transistor M4 is electrically connected with the second scanning signal line S2, both the data writing module and the threshold compensation module are located on a writing path of the data signal, and are used for writing the data signal into the input end of the second transistor M2 to control the working state of the second transistor M2, further control the magnitude of the driving current, and control the light emitting brightness of the first light emitting element group 110. The first initialization module includes a fifth transistor M5, a control terminal of the fifth transistor M5 is electrically connected to the first scan signal line S1, an input terminal of the fifth transistor M5 is electrically connected to the reference power signal terminal Vref, and an output terminal of the fifth transistor M5 is electrically connected to a control terminal of the third transistor M3, for resetting a control terminal potential of the driving module. The second initialization transistor includes a seventh transistor M7, where a control end of the seventh transistor M7 is electrically connected to the first scan signal line S1, an output end of the seventh transistor M7 is electrically connected to the reference power signal terminal Vref, and an output end of the seventh transistor M7 is electrically connected to the light emitting elements in the first light emitting element group 110, so as to reset anodes of the light emitting elements in the first light emitting element group 110, and avoid that the light emission of the previous frame affects the light emission of the current frame. The setting mode and the connection light of the driving module, the data writing module, the threshold compensation module, the first initialization module and the second initialization module in the second pixel circuit group 220 are the same as those of the first pixel circuit group 120, which are not described herein in detail, so as to ensure the normal light emission of the first light emitting element group 110 and the second light emitting element group 210 through the connection relationship.
Alternatively, fig. 5 is another enlarged schematic view of the area a in fig. 1, referring to fig. 1 and 5, the first light emitting element group 110 includes a first light emitting element 1101 and a second light emitting element 1102, and the light emitting area of the first light emitting element 1101 is larger than the light emitting area of the second light emitting element 1102. The first pixel circuit group 120 includes a first pixel circuit 1201 and a second pixel circuit 1202, the first pixel circuit 1201 is electrically connected to the first light emitting element 1101, and the second pixel circuit 1202 is electrically connected to the second light emitting element 1102; the driving current of the first pixel circuit 1201 is smaller than that of the second pixel circuit 1202.
As shown in fig. 1 and fig. 5, the first display area AA has a special-shaped boundary, and when the display panel is formed by cutting along the special-shaped boundary, the sub-pixels located at the position of the special-shaped boundary are cut to form a first sub-pixel group, and since the positions of the first light emitting element groups 110 in the first sub-pixel group at the special-shaped boundary are different, light emitting elements with different light emitting areas exist in the first light emitting element groups 110. The light emitting elements of the first light emitting element group 110 with different light emitting areas may cause color shift at the abnormal boundary position of the first display area, which affects the display effect of the display panel. For this reason, the light-emitting element having a light-emitting area larger than the set light-emitting area is referred to as a first light-emitting element 1101, the light-emitting element having a light-emitting area smaller than the set light-emitting area is referred to as a second light-emitting element 1102, and the light-emitting area of the first light-emitting element 1101 is larger than the light-emitting area of the second light-emitting element 1102. The first pixel circuit group 120 includes a first pixel circuit 1201 and a second pixel circuit 1202, the first pixel circuit 1201 is electrically connected with the first light emitting element 1101, the first pixel circuit 1201 provides a driving current for the first light emitting element 1101, the second pixel circuit 1202 is electrically connected with the second light emitting element 1102, and the second pixel circuit 1202 provides a driving current for the second light emitting element 1102, because the light emitting area of the first light emitting element 1101 is larger than the light emitting area of the second light emitting element 1102, the driving current of the first pixel circuit 1201 is smaller than the driving current of the second pixel circuit 1202, so that the final light emitting brightness of the first light emitting element 1101 and the second light emitting element 1102 with different light emitting areas in the special-shaped boundary position of the first display area AA is similar, the color cast problem of the special-shaped boundary position of the first display area AA can be improved, and the display effect of the display panel is improved.
In yet another embodiment, fig. 6 is an enlarged schematic view of the region C in fig. 1, referring to fig. 1 and 6, the first light-emitting element group 110 includes at least a first color light-emitting element 1103 and a second color light-emitting element 1104, wherein the light-emitting areas of the first color light-emitting element 1103 and the second color light-emitting element 1104 are the same, and the light-emitting efficiency of the first color light-emitting element 1103 is smaller than the light-emitting efficiency of the second color light-emitting element 1104. The first pixel circuit group 120 includes at least a third pixel circuit 1203 and a fourth pixel circuit 1204, the third pixel circuit 1203 is electrically connected to the first color light emitting element 1103, the fourth pixel circuit 1204 is electrically connected to the second color light emitting element 1104, and a driving current of the third pixel circuit 1203 is larger than a driving current of the fourth pixel circuit 1204.
Specifically, as shown in fig. 1 and fig. 6, in the first light-emitting element group 110 at the special-shaped boundary of the first display area AA, light-emitting elements with different light-emitting colors exist, and when the light-emitting areas of the light-emitting elements with different light-emitting colors are the same, due to the difference in light-emitting efficiency of the light-emitting elements with different light-emitting colors, a color shift phenomenon occurs at the special-shaped boundary position of the first display area AA when the driving current is the same. Further, when the first light emitting element group 110 includes at least the first color light emitting element 1103 and the second color light emitting element 1104 having the same light emitting area, and the light emitting efficiency of the first color light emitting element 1103 is smaller than that of the second color light emitting element 1104, the first pixel circuit group 120 is configured to include at least the third pixel circuit 1203 and the fourth pixel circuit 1204, the third pixel circuit 1203 is electrically connected to the first color light emitting element 1103, the third pixel circuit 1203 provides a driving current for the first color light emitting element 1103, the fourth pixel circuit 1204 is electrically connected to the second color light emitting element 1104, and the fourth pixel circuit 1204 provides a driving current for the second color light emitting element 1104, and since the light emitting efficiency of the first color light emitting element 1103 is smaller than that of the second color light emitting element 1104, the driving current of the third pixel circuit 1203 is larger than that of the fourth pixel circuit 1204, the first color light emitting element 1103 and the second color light emitting element 1104 having the same light emitting area but different light emitting efficiency in the special-shaped boundary position of the first display area AA can be made to finally emit light, the special-shaped display area AA can be improved, and the problem of the special-shaped display panel AA position can be improved.
On the basis of the above-described embodiment, fig. 7 is a schematic cross-sectional view in the DD' direction in fig. 6, referring to fig. 1, 6, and 7, each of the first light emitting element group 110 and the second light emitting element group 210 includes light emitting elements including the quantum dot layer 03 and the blue light emitting element 04, or the quantum dot layer 03 and the ultraviolet light emitting element 05; the first light-emitting element group 110 further includes a third color light-emitting element 1105, the first color light-emitting element 1103 includes a red light quantum dot layer 031, the second color light-emitting element 1104 includes a blue light quantum dot layer 032, and the third color light-emitting element 1105 includes a green light quantum dot layer 033; wherein, the light emitting efficiency of the first color light emitting element 1103 is smaller than the light emitting efficiency of the third color light emitting element 1105, the light emitting efficiency of the third color light emitting element 1105 is smaller than the light emitting efficiency of the second color light emitting element 1104, the first pixel circuit group 120 further includes a fifth pixel circuit 1205, the fifth pixel circuit 1205 is electrically connected to the third color light emitting element 1105, the driving current of the third pixel circuit 1203 is larger than the driving current of the fifth pixel circuit 1205, and the driving current of the fifth pixel circuit 1205 is larger than the driving current of the fourth pixel circuit 1204.
As shown in fig. 1, 6 and 7, the display panel may have a structure of a MICRO-LED light emitting element and a quantum dot layer, that is, a light emitting panel composed of light emitting elements having the same light emitting color and quantum dot layers having different colors on the light emitting elements. Specifically, when the light emitting elements are in the structure of the blue light emitting element 04 and the quantum dot layer 03, the first color light emitting element 1103 includes a red light quantum dot layer 031 and the blue light emitting element 04, the second color light emitting element 1104 includes the blue light emitting element 04, and the third color light emitting element 1105 includes a green light quantum dot layer 033 and the blue light emitting element 04. Whereas when the light emitting elements are in the structure of the ultraviolet light emitting element 05 and the quantum dot layer 03, the first color light emitting element 1103 includes a red light quantum dot layer 031 and an ultraviolet light emitting element 05, the second color light emitting element 1104 includes an ultraviolet light emitting element 05 and a blue light quantum dot layer 032, and the third color light emitting element 1105 includes a green light quantum dot layer 033 and an ultraviolet light emitting element 05. The first pixel circuit group 120 includes a third pixel circuit 1203, a fourth pixel circuit 1204, and a fifth pixel circuit 1205, wherein the third pixel circuit 1203 is electrically connected to the first color light emitting element 1103, a driving current is supplied to the first color light emitting element 1103 through the third pixel circuit 1203, the fourth pixel circuit 1204 is electrically connected to the second color light emitting element 1104, a driving current is supplied to the second color light emitting element 1104 through the fourth pixel circuit 1204, the fifth pixel circuit 1205 is electrically connected to the third color light emitting element 1105, and a driving current is supplied to the third color light emitting element 1105 through the fifth pixel circuit 1205. Since the light emitting element has the structure of the blue light emitting element 04 and the quantum dot layer 03, the light emitting efficiency of the first color light emitting element 1103 is smaller than the light emitting efficiency of the third color light emitting element 1105, and the light emitting efficiency of the third color light emitting element 1105 is smaller than the light emitting efficiency of the second color light emitting element 1104, by setting the driving current of the third pixel circuit 1203 to be larger than the driving current of the fifth pixel circuit 1205, the driving current of the fifth pixel circuit 1205 is larger than the driving current of the fourth pixel circuit 1204, the light emitting areas of the first color light emitting element 1103, the second color light emitting element 1104 and the third color light emitting element 1105 which have the same light emitting area but different light emitting efficiencies in the special-shaped boundary position of the first display area AA can be made similar, the color shift problem of the special-shaped boundary position of the first display area AA can be improved, and the display effect of the display panel can be improved.
It should be noted that, in fig. 7, a display panel having a quantum dot layer and a MICRO-LED light emitting element structure is only schematically illustrated, but this is not limited thereto, and in other embodiments, the display panel may be an OLED display panel, where the light emitting efficiency of the light emitting elements of different colors is different from the light emitting efficiency of the light emitting elements of different colors in the display panel having a quantum dot layer and a MICRO-LED light emitting element structure. Specifically, if the display panel is an OLED display panel, and the light emitted by the first color light emitting element 1103, the second color light emitting element 1104, and the third color light emitting element are red light, blue light, and green light, respectively, in the OLED display panel, the light emitting efficiency of the third color light emitting element 1105 is greater than the light emitting efficiency of the first color light emitting element 1103, the light emitting efficiency of the first color light emitting element 1103 is greater than the light emitting efficiency of the second color light emitting element 1104 (G > R > B), the driving current of the fifth pixel circuit 1205 may be set to be smaller than the driving current of the third pixel circuit 1203, and the driving current of the third pixel circuit 1203 is smaller than the driving current of the fourth pixel circuit 1204, that is, the light emitting element with high light emitting efficiency, and the driving current provided by the pixel circuit connected thereto is small.
In addition, the display panel may also be a MICRO-LED display panel, i.e. the light emitting elements of the display panel are MICRO-LEDs, excluding the quantum dot layer. The light emitting efficiency of the light emitting elements of different colors in the MICRO-LED display panel is different from the light emitting efficiency of the light emitting elements of different colors in the quantum dot layer and the display panel of the MICRO-LED light emitting element structure. Specifically, if the display panel is a MICRO-LED display panel and the light emitted by the first color light emitting element 1103, the second color light emitting element 1104, and the third color light emitting element are red light, blue light, and green light, respectively, the light emitting efficiency of the second color light emitting element 1104 is greater than the light emitting efficiency of the third color light emitting element 1105, the light emitting efficiency of the third color light emitting element 1105 is greater than the light emitting efficiency of the first color light emitting element 1103 (B > G > R), the driving current of the fourth pixel circuit 1204 may be set to be smaller than the driving current of the fifth pixel circuit 1205, the driving current of the fifth pixel circuit 1205 is smaller than the driving current of the third pixel circuit 1203, that is, the light emitting element with high light emitting efficiency provides a small driving current. As described above, according to the embodiment of the invention, the driving current in the pixel circuits which are correspondingly and electrically connected can be controlled according to the luminous efficiency relation of the luminous elements with different colors in different display panels, so as to improve the display effect of the display panels.
In yet another embodiment, fig. 8 is another enlarged schematic diagram of the area a in fig. 1, referring to fig. 1 and 8, the first display area includes at least a first area AA1 and a second area AA2, the display panel further includes a third sub-pixel group 50 located in the first area AA1 and a fourth sub-pixel group 60 located in the second area AA2, the third sub-pixel group 50 includes a third light emitting element group 510 and a third pixel circuit group 520 connected, the fourth sub-pixel circuit group 60 includes a fourth light emitting element group 610 and a fourth pixel circuit group 620 connected, the number of light emitting elements in the third light emitting element group 510 is smaller than the number of light emitting elements in the fourth light emitting element group 610, and the driving current of the third pixel circuit group 520 is larger than the driving current of the fourth pixel circuit group 620.
Specifically, as shown in fig. 1 and 8, the first display area AA at least includes a first area AA1 and a second area AA2, the third sub-pixel group 50 is located in the first area AA1, the fourth sub-pixel group 60 is located in the second area AA2, the third sub-pixel group 50 includes a third light emitting element group 510 and a third pixel circuit group 520 which are connected, the third pixel circuit group 520 provides a driving current for the third light emitting element group 510, the fourth sub-pixel circuit group 60 includes a fourth light emitting element group 610 and a fourth pixel circuit group 620 which are connected, and the fourth pixel circuit group 610 provides a driving current for the fourth light emitting element group 620, so that the first display area AA has a special-shaped boundary, and thus, the areas of the areas with the same width are different, that is, the area of the first area AA1 is smaller than the area of the second area AA2, and the number of light emitting elements in the third light emitting element group 510 is smaller than the number of light emitting elements in the fourth light emitting element group 610. Therefore, the driving current of the third pixel circuit group 520 is greater than the driving current of the fourth pixel circuit group 620, so that the overall light-emitting brightness of the first area AA1 is similar to the overall light-emitting brightness of the second area AA2, the color shift phenomenon and the brightness difference problem of different areas in the first display area AA are improved, and the display effect of the display panel is improved.
Optionally, with continued reference to fig. 1 and 8, the first display area AA further includes a third area AA3, the third area AA3 includes a fifth sub-pixel group 70, the fifth sub-pixel group 70 includes a fifth light emitting element group 710 and a fifth pixel circuit group 720 connected, the first area AA1, the second area AA2 and the third area AA3 are sequentially arranged along the first direction X, and the number of light emitting elements in the third light emitting element group 510 is smaller than the number of light emitting elements in the fourth light emitting element group 610, the number of light emitting elements in the fourth light emitting element group 610 is smaller than the number of light emitting elements in the fifth light emitting element group 710, and the driving currents of the third pixel circuit group 520, the fourth pixel circuit group 620 and the fifth pixel circuit group 720 sequentially decrease.
Specifically, the first display area AA may be located in a corner area of the display panel, that is, the first display area AA may be an R-angle special-shaped display area. When the first display area AA is divided into three areas with the same width in the first direction X, the areas of the three areas with the same width are different due to the existence of the special-shaped boundary, that is, the areas of the first area AA1, the second area AA2 and the third area AA3 are gradually increased from the central area of the display panel to the edge area of the display panel along the first direction X, in other words, the number of light emitting elements in the third light emitting element group 510, the number of light emitting elements in the fourth light emitting element group 610 and the number of light emitting elements in the fifth light emitting element group 710 are gradually increased, the third light emitting element group 510 is electrically connected with the third pixel circuit group 520, the fourth light emitting element group 610 is electrically connected with the fourth pixel circuit group 620, and the fifth pixel circuit group 720 are electrically connected with each other, so that the driving currents of the third pixel circuit group 520, the fourth pixel circuit group 620 and the fifth pixel circuit group 720 are sequentially reduced, and the different light emitting elements in number of the first area AA1, the second area AA2 and the third area AA3 are sequentially improved, and the different brightness of the display area AA is improved, and the brightness of the different display area AA is improved.
Alternatively, fig. 9 is another enlarged schematic view of the region C in fig. 1, referring to fig. 1 and 9, the first display area AA further includes a fourth area AA4, a fifth area AA5, and a sixth area AA6, the fourth area AA4 includes a sixth subpixel group 810, the fifth area AA5 includes a seventh subpixel group 820, the sixth area AA6 includes an eighth subpixel group 830, the sixth subpixel group 810 includes a connected sixth light emitting element group 811 and a sixth pixel circuit group 812, the seventh subpixel group 820 includes a connected seventh light emitting element group 821 and a seventh pixel circuit group 822, and the eighth subpixel group 830 includes a connected eighth light emitting element group 831 and an eighth pixel circuit group 832. The sixth area AA6 surrounds at least part of the fifth area AA5, the fifth area AA5 surrounds at least part of the fourth area AA4, and the number of light emitting elements in the sixth light emitting element group 811 is smaller than the number of light emitting elements in the seventh light emitting element group 821, the number of light emitting elements in the seventh light emitting element group 821 is smaller than the number of light emitting elements in the eighth light emitting element group 831, and the driving currents of the sixth pixel circuit group 812, the seventh pixel circuit group 822, and the eighth pixel circuit group 832 gradually decrease.
Specifically, the first display area AA may be an area connected to the blind hole area or the through hole area of the display panel, where no light emitting element is disposed in the blind hole area or the through hole area, and when the first display area AA is divided into different areas around the blind hole area or the through hole area, the areas of the different areas are different due to different distances between the different areas and the blind hole area, as shown in fig. 9, when the blind hole area is circular, the first display area AA forms a "concentric circle" shape around the blind hole area, and further the areas of the fourth area AA4, the fifth area AA5, and the sixth area AA6 are gradually increased along the direction of the blind hole area pointing to the first display area AA, in other words, the number of light emitting elements in the sixth light emitting element group 811, the number of light emitting elements in the seventh light emitting element group 821, and the number of light emitting elements in the eighth light emitting element group 831 are gradually increased. The sixth light emitting element group 811 is electrically connected to the sixth pixel circuit group 812, the seventh light emitting element group 821 is electrically connected to the seventh pixel circuit group 822, and the eighth light emitting element group 831 is electrically connected to the eighth pixel circuit group 832, so that driving currents of the sixth pixel circuit group 812, the seventh pixel circuit group 822 and the eighth pixel circuit group 832 can be gradually reduced, so that light emitting brightness of the fourth area AA4, the fifth area AA5 and the sixth area AA6 with different numbers of light emitting elements are similar, color cast phenomenon and brightness difference problem of edges of the first display area AA are improved, and display effect of the display panel is improved.
Alternatively, fig. 10 is a schematic view of another display panel provided in an embodiment of the present invention, referring to fig. 10, the display panel includes a plurality of first display areas AA, and the display panel further includes a first center line a extending along a first direction X and a second center line b extending along a second direction Y. The first direction X and the second direction Y are perpendicular to each other, and the first direction X and the second direction Y are parallel to the plane where the display panel is located. The plurality of first display areas AA include first and second symmetrical display areas AAa and AAb symmetrically disposed along the second center line, the second symmetrical display areas AAb being located near the driving chip 100 of the display panel; the first symmetrical display area AAa includes a ninth sub-pixel group 910, the ninth sub-pixel group 910 includes a ninth light emitting element group 911 and a ninth pixel circuit group 912 connected, the second symmetrical display area AAb includes a tenth sub-pixel group 920, the tenth sub-pixel group 920 includes a tenth light emitting element group 921 and a tenth pixel circuit group 922 connected, and a driving current of the tenth pixel circuit group 922 is smaller than that of the ninth pixel circuit group 912.
Specifically, the display panel includes a plurality of first display areas AA, the plurality of first display areas AA may be located in an R-angle area of the display panel, the display panel further includes a second central line b extending along the second direction Y, the plurality of first display areas AA includes a first symmetrical display area AAa and a second symmetrical display area AAb symmetrically disposed along the second central line, that is, a distance between the first symmetrical display area AAa and the second central line b is equal to a distance between the second symmetrical display area AAb and the second central line b, since the second symmetrical display area AAb is located at a position close to the driving chip 100 of the display panel, that is, the second symmetrical display area AAb is located in a lower frame area of the display panel, and when the driving chip 100 transmits signals, a voltage drop of the second symmetrical display area AAb closer to the driving chip 100 is smaller in a signal transmission process, and a voltage drop of the first symmetrical display area AAa farther from the driving chip 100 is larger in a signal transmission process, and a driving current of a ninth pixel circuit group located in the first symmetrical display area AAa is greater than a driving current of a ninth pixel circuit group located in the second symmetrical display area AAa, so that the second symmetrical display area AAb is greater than a luminance voltage drop of the second pixel circuit group located in the second symmetrical display area AAb is equal to the second pixel circuit group, which is located in the second symmetrical display area, thereby improving luminance voltage drop of the second pixel area is similar to the first pixel area, and has luminance voltage drop, and has improved luminance effect.
On the basis of the above embodiment, with continued reference to fig. 10, the plurality of first display areas AA further includes a third symmetrical display area AAc and a fourth symmetrical display area AAd symmetrically disposed along the first center line a, the third symmetrical display area AAc including an eleventh sub-pixel group 930, the eleventh sub-pixel group 930 including a connected eleventh light emitting element group 931 and an eleventh pixel circuit group 932, the fourth symmetrical display area AAd including a twelfth sub-pixel group 940, the twelfth sub-pixel group 940 including a connected twelfth light emitting element group 941 and a twelfth pixel circuit group 942. The driving current of the eleventh pixel circuit group 932 is equal to the driving current of the twelfth pixel circuit group 942. Specifically, as shown in fig. 10, the first center line a extends along the first direction X, and the display panel includes a third symmetrical display area AAc and a fourth symmetrical display area AAd symmetrically disposed along the first center line a, and the third symmetrical display area AAc and the fourth symmetrical display area AAd are closely spaced from the driving chip 100, so that the driving current of the eleventh pixel circuit group 932 disposed in the third symmetrical display area AAc is equal to the driving current of the twelfth pixel circuit group 942 disposed in the fourth symmetrical display area AAd. In addition, on the basis of the above, the eleventh light emitting element group 931 of the third symmetrical display region AAc and the twelfth light emitting element group 941 of the fourth symmetrical display region AAd may be provided to connect the same pixel circuit group, so that the control manner of the display panel is simplified.
Based on the above inventive concept, the embodiment of the invention also provides a display device. Fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present invention. As shown in fig. 11, the display device includes the display panel 200 in the above-described embodiment. The display device includes the display panel 200 according to any embodiment of the present invention, so the display device provided by the embodiment of the present invention has the corresponding beneficial effects of the display panel 200 provided by the embodiment of the present invention, and will not be described herein. The display device may be, for example, an electronic device such as a mobile phone, a computer, a smart wearable device (e.g., a smart watch), and a vehicle-mounted display device, which is not limited in the embodiment of the present invention.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements, combinations, and substitutions can be made by those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.

Claims (13)

1. A display panel, comprising a first display region and a second display region, wherein the first display region comprises a special-shaped boundary of the display panel;
the display panel further comprises a first sub-pixel group and a second sub-pixel group, wherein the first sub-pixel group is positioned in the first display area and the second sub-pixel group is positioned in at least the second display area, the first sub-pixel group comprises a first light-emitting element group and a first pixel circuit group which are connected, the second sub-pixel group comprises a second light-emitting element group and a second pixel circuit group which are connected, and the light-emitting area of a light-emitting element in the first light-emitting element group is smaller than the light-emitting area of a light-emitting element in the second light-emitting element group;
the driving current of the first pixel circuit group is larger than the driving current of the second pixel circuit group.
2. The display panel of claim 1, further comprising a set of power signal lines, the set of power signal lines comprising a first set of power signal lines and a second set of power signal lines; the first power signal line group comprises a first positive power signal line and a first negative power signal line, and the second power signal line group comprises a second positive power signal line and a second negative power signal line; the first positive power supply signal line and the first negative power supply signal line are electrically connected with the first pixel circuit group, and the second positive power supply signal line and the second negative power supply signal line are electrically connected with the second pixel circuit group;
Wherein the voltage in the first positive power supply signal line and the voltage in the first negative power supply signal line have a first difference value, and the voltage in the second positive power supply signal line and the voltage in the second negative power supply signal line have a second difference value; the first difference is greater than the second difference.
3. The display panel according to claim 2, wherein a voltage in the first positive power supply signal line is greater than a voltage in the second positive power supply signal line, and/or a voltage in the first negative power supply signal line is less than a voltage in the second negative power supply signal line.
4. The display panel according to claim 1, further comprising a light emission control signal line group including a first light emission control signal line and a second light emission control signal line; the first light-emitting control signal line is electrically connected with the first pixel circuit group and used for providing a first light-emitting control signal for the first pixel circuit group, and the second light-emitting control signal line is electrically connected with the second pixel circuit group and used for providing a second light-emitting control signal for the second pixel circuit;
The duty ratio of the enable signal in the first light emission control signal is larger than the duty ratio of the enable signal in the second light emission control signal.
5. The display panel according to claim 1, wherein the first light-emitting element group includes a first light-emitting element and a second light-emitting element, and wherein a light-emitting area of the first light-emitting element is larger than a light-emitting area of the second light-emitting element;
the first pixel circuit group comprises a first pixel circuit and a second pixel circuit, the first pixel circuit is electrically connected with the first light-emitting element, and the second pixel circuit is electrically connected with the second light-emitting element;
the driving current of the first pixel circuit is smaller than the driving current of the second pixel circuit.
6. The display panel according to claim 1, wherein the first light-emitting element group includes at least a first color light-emitting element and a second color light-emitting element, wherein light-emitting areas of the first color light-emitting element and the second color light-emitting element are the same, and wherein light-emitting efficiency of the first color light-emitting element is smaller than light-emitting efficiency of the second color light-emitting element;
the first pixel circuit group at least comprises a third pixel circuit and a fourth pixel circuit, the third pixel circuit is electrically connected with the first color light-emitting element, and the fourth pixel circuit is electrically connected with the second color light-emitting element;
The driving current of the third pixel circuit is greater than the driving current of the fourth pixel circuit.
7. The display panel according to claim 6, wherein the first light-emitting element group and the second light-emitting element group each include a light-emitting element including a quantum dot layer and a blue light-emitting element, or a quantum dot layer and an ultraviolet light-emitting element; the first light-emitting element group further comprises a third color light-emitting element, the first color light-emitting element comprises a red light quantum dot layer, the second color light-emitting element comprises a blue light quantum dot layer, and the third color light-emitting element comprises a green light quantum dot layer; wherein the luminous efficiency of the first color luminous element is smaller than the luminous efficiency of the third color luminous element, and the luminous efficiency of the third color luminous element is smaller than the luminous efficiency of the second color luminous element;
the first pixel circuit group further comprises a fifth pixel circuit, and the fifth pixel circuit is electrically connected with the third color light-emitting element;
the driving current of the third pixel circuit is larger than the driving current of the fifth pixel circuit, and the driving current of the fifth pixel circuit is larger than the driving current of the fourth pixel circuit.
8. The display panel of claim 1, wherein the first display area comprises at least a first region and a second region; the display panel also comprises a third sub-pixel group positioned in the first area and a fourth sub-pixel group positioned in the second area;
the third sub-pixel group comprises a third light-emitting element group and a third pixel circuit group which are connected, the fourth pixel circuit group comprises a fourth light-emitting element group and a fourth pixel circuit group which are connected, and the number of light-emitting elements in the third light-emitting element group is smaller than that of the light-emitting elements in the fourth light-emitting element group;
the driving current of the third pixel circuit group is larger than the driving current of the fourth pixel circuit group.
9. The display panel of claim 8, wherein the first display area further comprises a third area; the third region comprises a fifth sub-pixel group, the fifth sub-pixel group comprises a fifth light-emitting element group and a fifth pixel circuit group which are connected, the first region, the second region and the third region are sequentially arranged along a first direction, the number of light-emitting elements in the third light-emitting element group is smaller than that of light-emitting elements in the fourth light-emitting element group, and the number of light-emitting elements in the fourth light-emitting element group is smaller than that of light-emitting elements in the fifth light-emitting element group; the driving currents of the third pixel circuit group, the fourth pixel circuit group, and the fifth pixel circuit group are sequentially reduced.
10. The display panel of claim 8, wherein the first display region further comprises a fourth region, a fifth region, and a sixth region;
the fourth region includes a sixth subpixel group, the fifth region includes a seventh subpixel group, and the sixth region includes an eighth subpixel group; the sixth sub-pixel group comprises a sixth light-emitting element group and a sixth pixel circuit group which are connected, the seventh sub-pixel group comprises a seventh light-emitting element group and a seventh pixel circuit group which are connected, and the eighth sub-pixel group comprises an eighth light-emitting element group and an eighth pixel circuit group which are connected;
the sixth region surrounds at least part of the fifth region, the fifth region surrounds at least part of the fourth region, and the number of light emitting elements in the sixth light emitting element group is smaller than the number of light emitting elements in the seventh light emitting element group, which is smaller than the number of light emitting elements in the eighth light emitting element group;
the drive currents of the sixth pixel circuit group, the seventh pixel circuit group, and the eighth pixel circuit group gradually decrease.
11. The display panel of claim 1, wherein the display panel comprises a plurality of first display regions, the display panel further comprises a first centerline extending along a first direction and a second centerline extending along a second direction, wherein the first direction and the second direction are perpendicular to each other, and wherein the first direction and the second direction are both parallel to a plane in which the display panel is located;
The plurality of first display areas comprise first symmetrical display areas and second symmetrical display areas which are symmetrically arranged along the second central line, and the second symmetrical display areas are positioned close to the driving chips of the display panel;
the first symmetrical display area comprises a ninth sub-pixel group, and the ninth sub-pixel group comprises a ninth light emitting element group and a ninth pixel circuit group which are connected;
the second symmetrical display area comprises a tenth sub-pixel group, and the tenth sub-pixel group comprises a tenth light-emitting element group and a tenth pixel circuit group which are connected;
the drive current of the tenth pixel circuit group is smaller than the drive current of the ninth pixel circuit group.
12. The display panel of claim 11, wherein the plurality of first display regions further comprises third and fourth symmetric display regions symmetrically disposed along the first centerline;
the third symmetrical display area comprises an eleventh sub-pixel group, and the eleventh sub-pixel group comprises an eleventh light emitting tuple and an eleventh pixel circuit group which are connected;
the fourth symmetrical display area comprises a twelfth sub-pixel group, and the twelfth sub-pixel group comprises a twelfth light emitting element group and a twelfth pixel circuit group which are connected;
The driving current of the eleventh pixel circuit group is equal to the driving current of the twelfth pixel circuit group.
13. A display device comprising the display panel of any one of claims 1-12.
CN202310769109.0A 2023-06-27 2023-06-27 Display panel and display device Pending CN116682370A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310769109.0A CN116682370A (en) 2023-06-27 2023-06-27 Display panel and display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310769109.0A CN116682370A (en) 2023-06-27 2023-06-27 Display panel and display device

Publications (1)

Publication Number Publication Date
CN116682370A true CN116682370A (en) 2023-09-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310769109.0A Pending CN116682370A (en) 2023-06-27 2023-06-27 Display panel and display device

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Country Link
CN (1) CN116682370A (en)

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