CN113517327B - Display panel, display device and display method - Google Patents
Display panel, display device and display method Download PDFInfo
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- CN113517327B CN113517327B CN202110726856.7A CN202110726856A CN113517327B CN 113517327 B CN113517327 B CN 113517327B CN 202110726856 A CN202110726856 A CN 202110726856A CN 113517327 B CN113517327 B CN 113517327B
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
- H10K59/1216—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being capacitors
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- 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
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The application discloses a display panel, display device and display method relates to the technical field of display, and includes: the display device comprises a first display area and a second display area, wherein the first display area is a plane area, and the second display area is a curved area; a substrate base; the pixel light-emitting element is positioned on one side of the substrate close to the light-emitting surface of the display panel and comprises an anode, a pixel light-emitting layer and a cathode which are sequentially stacked; the compensation layer is positioned in the second display area, and the compensation layer is positioned at one side of the pixel light-emitting element, which is away from the light-emitting surface of the display panel; the orthographic projection of the compensation layer on the substrate is overlapped with the orthographic projection of the anodes of the pixel luminous elements with at most two colors on the substrate along the direction perpendicular to the light emitting surface of the display panel. The method adopts a mode of arranging the compensation layer for the anode of the pixel light-emitting element, so that the compensation layer and the anode form a capacitor structure, the brightness of each pixel light-emitting element is compensated, and the color cast problem under a large visual angle is improved.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a display panel, a display device, and a display method.
Background
An OLED (Organic Light-Emitting Diode) has advantages of wide color gamut, high contrast, energy saving, foldability, and the like, and is one of the most competitive technologies in new generation display devices, and has a wide application field, such as the fields of smart wearable devices, vehicle-mounted devices, and smart home appliances.
With the continuous development of display technology, the development process of flexible display panels is gradually accelerated. The flexible display panel has a profound effect on the application of wearable equipment due to the characteristics of low power consumption, flexibility and foldability, and the flexible display panel is widely applied along with the continuous penetration of the personal intelligent terminal in the future.
An Organic Light-Emitting Diode (OLED) display screen has been increasingly used as a current-type Light-Emitting device for high-performance display, and an OLED display screen has excellent characteristics of self-luminescence, no backlight source, wide color gamut, high contrast, thin thickness, wide viewing angle, fast response speed, availability for flexible panels, wide use temperature range, simpler structure and manufacturing process, and the like, and an OLED curved display screen has also been increasingly used for mobile phone display. The two sides of the display panel of the curved surface display device are curved surface shapes with a certain radian, and compared with the traditional plane display device, the curved surface display device has larger visual angles at the left side and the right side of the screen, and can provide better visual feeling for users. However, when the curved display device is viewed from above, the side of the curved surface of the curved display device may be colored.
Therefore, providing a flexible display panel and a display device that can improve the color shift problem of the side curved surface is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In view of this, the present application provides a display panel, a display device and a display method, in which a compensation layer is disposed on an anode of a pixel light emitting element, so that the compensation layer and the anode form a capacitor structure to compensate the brightness of each pixel light emitting element and improve the color cast problem under a large viewing angle.
The application has the following technical scheme:
in a first aspect, the present application provides a display panel, comprising: the display device comprises a first display area and a second display area adjacent to the first display area, wherein the first display area is a plane area, and the second display area is a curved area;
a substrate base;
the pixel light-emitting element is positioned on one side of the substrate close to the light-emitting surface of the display panel and comprises an anode, a pixel light-emitting layer and a cathode which are sequentially stacked;
the compensation layer is positioned in the second display area and is positioned at one side of the pixel light-emitting element, which is away from the light-emitting surface of the display panel; the front projection of the compensation layer on the substrate overlaps at least partially with the front projection of the anodes of the pixel light-emitting elements of at most two colors on the substrate along the direction perpendicular to the light-emitting surface of the display panel.
In a second aspect, the present application further provides a display device, including a display panel, where the display panel is a display panel provided by the present application.
In a third aspect, the present application further provides a display method applied to the display panel provided in the present application, where the display panel includes a driving chip, and a data line and a signal trace electrically connected to the driving chip, and the display method includes:
the driving chip inputs a first voltage signal V1 to the anode of the pixel light emitting element through a data line electrically connected with the driving chip;
the driving chip inputs a second voltage signal V2 to the compensation layer through a signal wire electrically connected with the driving chip;
the anode of the pixel light emitting element and the compensation layer form a capacitance structure, and at this time, the voltage v=v1+v2 of the anode of the pixel light emitting element.
Compared with the prior art, the display panel, the display device and the display method provided by the invention have the advantages that at least the following effects are realized:
according to the display panel, the display device and the display method, the compensation layer is additionally arranged, the orthographic projection of the compensation layer on the substrate and the orthographic projection of the anodes of the pixel light-emitting elements with at most two colors on the substrate are at least partially overlapped, when the material of the compensation layer is metal, and after the compensation layer is electrified, the compensation layer and the anodes of the pixel light-emitting elements form a capacitance structure to generate coupling, so that the potential of the anodes of the pixel light-emitting elements can be increased, the hole injection capability of the pixel light-emitting elements is promoted, the current flowing through the pixel light-emitting elements is further increased, the luminous efficiency of the pixel light-emitting elements is improved, and the luminous efficiency of the pixel light-emitting elements with at least two colors is increased; therefore, the problem that the luminous efficiencies of the pixel luminous elements with different colors are different is solved, the brightness of each pixel luminous element on the display panel is balanced, and the color cast problem of the display panel under a large viewing angle is further improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
FIG. 2 is a cross-sectional view along A-A' of the display panel provided by the embodiment of FIG. 1;
FIG. 3 is another cross-sectional view along A-A' of the display panel provided by the embodiment of FIG. 1;
FIG. 4 is another cross-sectional view along A-A' of the display panel provided by the embodiment of FIG. 1;
FIG. 5 is a schematic diagram illustrating a portion of a second display area according to an embodiment of the present disclosure;
FIG. 6 is another schematic diagram illustrating a portion of a second display area according to an embodiment of the present disclosure;
FIG. 7 is another schematic diagram illustrating a portion of a second display area according to an embodiment of the present disclosure;
FIG. 8 is another schematic diagram illustrating a portion of a second display area according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of a display device according to an embodiment of the present application;
fig. 10 is a schematic diagram of a capacitor structure formed by the compensation layer and the anode according to the embodiment of the present application.
Detailed Description
Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art is able to solve the technical problem within a certain error range, substantially achieving the technical effect. Furthermore, the term "coupled" as used herein includes any direct or indirect electrical coupling. Accordingly, if a first device couples to a second device, that connection may be through a direct electrical coupling to the second device, or through another device or coupling means coupled to ground. The description hereinafter sets forth the preferred embodiment for carrying out the present application, but is not intended to limit the scope of the present application in general, for the purpose of illustrating the general principles of the present application. The scope of the present application is defined by the appended claims. The same points between the embodiments are not described in detail.
The following detailed description refers to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of a display panel 100 according to an embodiment of the present application, fig. 2 is a cross-sectional view along A-A' of the display panel 100 according to the embodiment of fig. 1, and referring to fig. 1 and 2, the present application provides a display panel 100, including: the display device comprises a first display area 10 and a second display area 20 adjacent to the first display area 10, wherein the first display area 10 is a plane area, and the second display area 20 is a curved area;
a substrate base 30;
a pixel light emitting element 40, the pixel light emitting element 40 being located on a side of the substrate 30 close to the light emitting surface of the display panel 100, the pixel light emitting element 40 comprising an anode 41, a pixel light emitting layer 42 and a cathode 43, which are sequentially stacked;
the compensation layer 50, the compensation layer 50 is located in the second display area 20, and the compensation layer 50 is located at a side of the pixel light emitting element 40 away from the light emitting surface of the display panel; in a direction perpendicular to the light emitting surface of the display panel, i.e. the third direction D3, the orthographic projection of the compensation layer 50 on the substrate 30 at least partially overlaps with the orthographic projection of the anode 41 of the pixel light emitting element 40 of at most two colors on the substrate 30.
It should be noted that, the embodiment shown in fig. 1 only schematically illustrates one relative positional relationship of the second display area 20 around the first display area 10, and does not represent the actual dimensions of the first display area 10 and the second display area 20, and the first display area 10 and the second display area 20 have other relative positional relationships, which is not limited herein; the embodiment shown in fig. 2 only shows a cross-sectional view of the respective film layers in the second display area 20 in a schematic manner and does not represent specific dimensions of the respective film layers.
Specifically, as shown in fig. 1 and 2, the display panel 100 in the present embodiment includes a first display area 10 and a second display area 20, where the first display area 10 is a planar area, and the second display area 20 is a curved area, and optionally, the curved area is disposed around the planar area; the display panel 100 of the present embodiment further includes a substrate 30, and a pixel light emitting element 40 located on a side of the substrate 30 near the light emitting surface of the display panel, where the pixel light emitting element 40 includes an anode 41, a pixel light emitting layer 42, and a cathode 43, which are sequentially stacked, and the pixel light emitting layer 42 is located between the anode 41 and the cathode 43, where the pixel light emitting layer 42 corresponds to the anode 41 one by one, and the cathode 43 is disposed to cover the pixel light emitting layer 42 entirely.
Further, as shown in fig. 1 and 2, the present embodiment further provides a compensation layer 50, where the compensation layer 50 is located in the second display area 20, and the compensation layer 50 is located at a side of the pixel light emitting element 40 away from the light emitting surface of the display panel; along the direction perpendicular to the light emitting surface of the display panel, namely, the third direction D3, the orthographic projection of the compensation layer 50 on the substrate 30 at least partially overlaps with the orthographic projection of the anode 41 of the pixel light emitting element 40 with at most two colors on the substrate 30, when the material of the compensation layer 50 is metal and after the compensation layer 50 is electrified, the compensation layer 50 and the anode 41 of the pixel light emitting element 40 form a capacitance structure to generate coupling, so that the potential of the anode 41 of the pixel light emitting element 40 can be raised, the hole injection capability of the pixel light emitting element 40 is promoted, the current flowing through the pixel light emitting element 40 is further increased, the luminous efficiency of the pixel light emitting element 40 is improved, and the luminous efficiency of the pixel light emitting element 40 with at least two colors is increased; thus, the problem of different luminous efficiencies of the pixel luminous elements 40 with different colors is improved, the brightness of each pixel luminous element 40 on the display panel 100 is balanced, and the color cast problem of the display panel under a large viewing angle is further improved.
It should be noted that, as shown in fig. 2, the display panel 100 in this embodiment further includes a thin film transistor array layer 60, where the thin film transistor array layer 60 includes a substrate 30, a buffer layer, a gate insulating layer, an interlayer insulating layer, a passivation layer, and a planarization layer, which are sequentially stacked, and a Thin Film Transistor (TFT) is disposed on a side of the buffer layer away from the light-emitting surface of the display panel 100, and the thin film transistor includes a semiconductor active layer, a gate electrode, a source electrode, and a drain electrode, which are stacked; a planarization layer on the thin film transistor array layer 60 for the pixel light emitting element 40; and the anode 41 of the pixel light emitting element 40 is electrically connected to the source or drain of the thin film transistor through a via hole, which is not shown in fig. 2 in this embodiment. Optionally, the compensation layer in this embodiment is located in a planarization layer in the thin film transistor.
Alternatively, as shown in fig. 2, the pixel light emitting element 40 includes a first color pixel light emitting element 44, a second color pixel light emitting element 45, and a third color pixel light emitting element 46;
the degree of luminance decay of the first color pixel light emitting element 44 and the degree of luminance decay of the second color pixel light emitting element 45 are both greater than the degree of luminance decay of the third color pixel light emitting element 40;
the front projection of the compensation layer 50 onto the substrate 30 at least partially overlaps the front projection of the anode 41 of the first color pixel light emitting element 44 onto the substrate 30; and/or the front projection of the compensation layer 50 onto the substrate 30 at least partially overlaps the front projection of the anode 41 of the second color pixel light emitting element 45 onto the substrate 30.
Specifically, as shown in fig. 2, in the present embodiment, the pixel light emitting element 40 includes a first color pixel light emitting element 44, a second color pixel light emitting element 45 and a third color pixel light emitting element 46, where the luminance of the first color pixel light emitting element 44 and the luminance of the second color pixel light emitting element 45 are attenuated more than the luminance of the third color pixel light emitting element 46, it is understood that the luminance emitted by the first color pixel light emitting element and the second color pixel light emitting element 45 is weaker than the luminance emitted by the third color pixel light emitting element 46, and therefore, the luminous efficiency of the first color pixel light emitting element 44 and the second color pixel light emitting element 45 needs to be improved, and the luminous intensity thereof needs to be enhanced.
In view of the above, the present embodiment proposes to add the compensation layer 50, and the orthographic projection of the compensation layer 50 on the substrate 30 at least partially overlaps with the orthographic projection of the anode 41 of the first color pixel light emitting element 44 on the substrate 30, and/or the orthographic projection of the compensation layer 50 on the substrate 30 at least partially overlaps with the orthographic projection of the anode 41 of the second color pixel light emitting element 45 on the substrate 30; it can be understood that the compensation cathode 43 in the present embodiment corresponds to the anode 41 of the first color pixel light emitting element 44 one by one, and/or the compensation cathode 43 corresponds to the anode 41 of the second color pixel light emitting element 45 one by one; when the first color pixel light emitting element 44 and the compensation layer 50 generate a coupling capacitance, the light intensity of the first color pixel light emitting element 44 can be enhanced; when the second color pixel light emitting element 45 and the compensation layer 50 generate a coupling capacitance, the light intensity of the second color pixel light emitting element 45 can be enhanced; finally, the first color pixel light emitting element 44, the second color pixel light emitting element 45, and the third color pixel light emitting element 46 are made to be uniform in brightness, and color shift under a large viewing angle is improved.
Optionally, fig. 3 is a cross-sectional view of another embodiment of the display panel 100 along A-A' shown in fig. 1. Referring to fig. 3, the first color pixel light emitting element 44 is a red pixel, the second color pixel light emitting element 45 is a green pixel, the third color pixel light emitting element 46 is a blue pixel, and the brightness attenuation degree of the red pixel and the green pixel is greater than that of the blue pixel, so that the brightness of the red pixel and the green pixel needs to be enhanced. Alternatively, in this embodiment, since the brightness of the red pixel is attenuated to the greatest extent, the compensation layer 50 may be separately provided for the red pixel, so that the color shift problem under a large viewing angle can be more significantly improved.
Optionally, fig. 4 is a cross-sectional view of another display panel 100 along A-A' provided in the embodiment shown in fig. 1, and referring to fig. 4, the compensation layer 50 includes a first compensation layer 51 and a second compensation layer 52, where the first compensation layer 51 and the second compensation layer 52 are disposed in the same layer;
the orthographic projection of the first compensation layer 51 on the substrate 30 overlaps the orthographic projection of the anode 41 of the first color pixel light emitting element 44 on the substrate 30;
the orthographic projection of the second compensation layer 52 on the substrate 30 overlaps the orthographic projection of the anode 41 of the second color pixel light emitting element 45 on the substrate 30.
It should be noted that the embodiment shown in fig. 4 only schematically illustrates the relative positional relationship of the first compensation layer 51 and the second compensation layer 52, and does not represent the actual thicknesses of the first compensation layer 51 and the second compensation layer 52.
Specifically, please refer to fig. 4, and referring to fig. 1, the compensation layer 50 in the present embodiment includes a first compensation layer 51 and a second compensation layer 52, and the first compensation layer 51 and the second compensation layer 52 are disposed in the same layer, wherein, along a direction perpendicular to the light emitting surface of the display panel, i.e. the third direction D3, the first color pixel light emitting element 44 covers the first compensation layer 51, and the second color pixel light emitting element 45 covers the second compensation layer 52; in this way, the overlapping area of the first compensation layer 51 and the first color pixel light emitting element 44 is maximized, the overlapping area of the second compensation layer 52 and the second color pixel light emitting element 45 is maximized, the generated coupling voltage is larger, and the brightness of the first color pixel light emitting element 44 and the second color pixel light emitting element 45 can be improved more effectively.
Optionally, fig. 5 is a schematic partial view of the second display area 20 according to the embodiment of the present application, please refer to fig. 5, and further includes: the signal wires 70, the signal wires 70 are located in the second display area 20, the signal wires 70 extend along a first direction and are arranged along a second direction, and the first direction and the second direction intersect;
the signal trace 70 is electrically connected to the compensation layer 50, and the signal trace 70 is used for inputting a voltage signal to the compensation layer 50.
It should be noted that the embodiment shown in fig. 5 only schematically illustrates the arrangement of the signal traces 70, and does not represent the specific dimensions of the signal traces 70.
Specifically, referring to fig. 5, and referring to fig. 1 and 2, the display panel 100 in the present embodiment further includes a signal trace 70, where the signal trace 70 is located in the second display area 20, and the signal trace 70 extends along a first direction and is arranged along a second direction, and the first direction and the second direction intersect, and optionally, the first direction is perpendicular to the second direction; the signal trace 70 is electrically connected to the compensation layer 50, and is used for inputting a voltage signal to the compensation layer 50, so as to realize a necessary condition for coupling the compensation layer 50 and the anode 41 of the pixel light emitting element 40, and in addition, different voltages can be input to the signal trace 70, so that the anode 41 of the pixel light emitting element 40 can be increased by different voltages, and the brightness of each pixel light emitting element 40 can be flexibly adjusted according to the different brightness attenuation degrees of the sub-pixels of each color.
Optionally, fig. 6 is another partial schematic view of the second display area 20 provided in the embodiment of the present application, please refer to fig. 6, and further includes: a plurality of pixel units 80, each pixel unit 80 including one first color pixel light emitting element 44, one second color pixel light emitting element 45, and one third color pixel light emitting element 46;
further comprises: a pixel cell column 81, the pixel cell column 81 including a plurality of pixel cells 80, the pixel cell column 81 extending along a first direction and being arranged along a second direction;
the same pixel unit column 81 corresponds to the same compensation layer 50, and the compensation layer 50 is electrically connected to the same signal trace 70.
It should be noted that, the embodiment shown in fig. 6 only schematically illustrates a case where the second display area 20 includes one pixel cell column 81, and when the pixel cell column 81 is provided with a plurality of columns, it is arranged along the second direction.
Specifically, as shown in fig. 6, and referring to fig. 1 and 2, the display panel 100 in the present embodiment further includes a plurality of pixel units 80, and each pixel unit 80 includes one of the first color pixel light emitting element 44, the second color pixel light emitting element 45 and the third color pixel light emitting element 46; the plurality of pixel units 80 are sequentially arranged along the first direction to form a pixel unit column 81, and the plurality of pixel unit columns 81 are arranged along the second direction; the same pixel unit column 81 corresponds to the same compensation layer 50, namely, the compensation layer 50 is arranged to be the whole surface and corresponds to one pixel unit column 81 one by one, and the same signal wiring 70 is electrically connected to the compensation layer 50, so that the compensation layer 50 is arranged to be the whole surface and is arranged below the pixel unit column 81, on one hand, the number of the compensation layers 50 can be reduced, further, the number of the signal wiring 70 can be reduced, and the narrow frame of the display panel 100 is beneficial to realization; on the other hand, the process of manufacturing the compensation layer 50 can be simplified.
Alternatively, fig. 7 is another partial schematic diagram of the second display area 20 provided in the embodiment of the present application, please refer to fig. 5 and fig. 7, and fig. 1 and fig. 2 are combined to show that the same pixel unit row 81 corresponds to a plurality of compensation layers 50, and the plurality of compensation layers 50 are respectively electrically connected to different signal traces 70.
It should be noted that, the embodiment shown in fig. 7 only schematically illustrates that the plurality of compensation layers 50 in the same pixel unit column 81 are respectively connected to one signal trace 70, wherein part of the signal traces are omitted; the embodiment shown in fig. 5 only schematically illustrates that the compensation layers 50 corresponding to the same color pixel light emitting elements 40 are connected to the same signal trace 70.
Specifically, please refer to fig. 5 and 7, and referring to fig. 1 and 2, in this embodiment, the same pixel unit column 81 corresponds to a plurality of compensation layers 50, and it is understood that the same pixel unit column 81 includes a plurality of pixel light emitting elements 40, and the anode 41 of each pixel light emitting element 40 corresponds to a compensation layer 50 one by one, so that a plurality of compensation layers 50 need to be disposed, each compensation layer 50 is electrically connected to one signal trace 70, and different compensation layers 50 are electrically connected to different signal traces 70; in this way, by flexibly controlling the voltage signal input to each compensation layer 50, the coupling voltage generated by each compensation layer 50 and the corresponding anode 41 are different, and the voltage of the anode 41 of each pixel unit 80 is independently adjusted, so that the light emitting intensity of each pixel light emitting element 40 of the display panel 100 can be more accurately adjusted, the color cast problem of the display panel 100 is improved, and the display quality is improved. In addition, referring to fig. 8, the compensation layers 50 corresponding to the pixel light emitting elements 40 with the same color are connected to the same signal trace 70, which is beneficial to realizing a narrow frame of the display panel 100.
Optionally, fig. 8 is another partial schematic diagram of the second display area 20 provided in the embodiment of the present application, please refer to fig. 8, and referring to fig. 1 and 2, the same pixel unit row 81 corresponds to a plurality of compensation layers 50, the compensation layers 50 include a first compensation layer 51 and a second compensation layer 52, the first compensation layer 51 corresponds to the anode 41 of the first color pixel light emitting element 44 one by one, and the second compensation layer 52 corresponds to the anode 41 of the second color pixel light emitting element 45 one by one;
the first compensation layer 51 corresponding to the first color pixel light emitting element 44 in the same pixel unit column 81 is electrically connected to the same signal trace 70;
the second compensation layer 52 corresponding to the second color pixel light emitting element 45 in the same pixel unit column 81 is electrically connected to the same signal trace 70.
Specifically, referring to fig. 8, referring to fig. 1 and 2, in the present embodiment, the same pixel unit column 81 corresponds to a plurality of compensation layers 50, the compensation layers 50 include a first compensation layer 51 and a second compensation layer 52, the first compensation layer 51 corresponds to the anodes 41 of the first color pixel light emitting elements 44 in the same pixel unit column 81 one by one, and the second compensation layer 52 corresponds to the anodes 41 of the second color pixel light emitting elements 45 in the same pixel unit column 81 one by one; the first compensation layer 51 is individually connected with the signal trace 70, and the second compensation layer 52 is also individually connected with the signal trace 70; since the brightness of the same color light emitting element is attenuated to the same degree, a signal wire 70 is connected to the same color light emitting element; by adjusting the voltages input to the first compensation layer 51 and the second compensation layer 52, the brightness of the three color pixel light emitting elements 40 included in the pixel unit 80 can be the same, and the color shift problem of the display panel 100 under a large viewing angle can be improved.
Note that the compensation layer 50 corresponding to the first color pixel light emitting element 44 and the compensation layer 50 corresponding to the second color pixel light emitting element 45 are located in different layers.
Optionally, the material of the compensation layer 50 is transparent metal.
Specifically, as shown in fig. 2, the material of the compensation layer 50 in the present embodiment is transparent metal; on the one hand, when the display panel 100 emits light, the compensation layer 50 is disposed on the side of the pixel light emitting element 40 facing away from the light emitting surface of the display panel, so as not to affect the light emitting effect of the display panel 100; on the other hand, when the external light enters the display panel 100 through the light-emitting surface of the display panel 100, the material of the compensation layer 50 is transparent, and the light passing is not affected.
Alternatively, the material of the compensation layer 50 may be one of indium tin oxide, indium zinc oxide, indium oxide and molybdenum, which is not limited herein, and may be selected according to practical requirements.
Based on the same inventive concept, fig. 9 is a schematic structural diagram of a display device 200 provided in an embodiment of the present application, please refer to fig. 9, and further provide a display device 200, where the display device 200 includes a display panel 100, and the display panel 100 is the display panel 100 provided in any of the foregoing embodiments of the present application, and the repetition is omitted.
It should be noted that, in the embodiments of the display device 200 provided in the embodiments of the present application, reference may be made to the embodiments of the display panel 100 described above, and the embodiments of the display device 200 in the present application take an Organic Light-Emitting Diode Display device as an example, and the repetition is omitted. The display device 200 provided in the present application may be: any product or component with realistic functions such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
Based on the same inventive concept, please refer to fig. 1 to 8, the present application further provides a display method applied to the display panel 100 according to any one of claims 1 to 8, wherein the display panel 100 comprises a driving chip, and a data line and a signal trace 70 electrically connected to the driving chip, and the display method comprises:
the driving chip inputs a first voltage signal V1 to the anode 41 of the pixel light emitting element 40 through a data line electrically connected thereto;
the driving chip inputs a second voltage signal V2 to the compensation layer 50 through a signal trace 70 electrically connected thereto;
the anode 41 of the pixel light emitting element 40 and the compensation layer 50 form a capacitance structure, and at this time, the voltage v=v1+v2 of the anode 41 of the pixel light emitting element 40.
Specifically, as shown in fig. 1 to 8, the display method provided in the present embodiment is applied to the display panel 100 in the above embodiment, where the display panel 100 further includes a driver chip IC, and the data line and the signal trace 70 electrically connected to the driver chip, and the driver chip IC is used for inputting voltage signals to the data line and the signal trace 70.
Further, fig. 10 is a schematic diagram of a capacitor structure formed by the compensation layer 50 and the anode 41 according to the embodiment of the present application, please refer to fig. 10, and fig. 1 to 8 are combined to show that the display method in the embodiment includes: the driving chip IC inputs a first voltage signal V1 to the anode 41 of the pixel light emitting element 40 through a data line electrically connected thereto; the driving chip IC inputs a second voltage signal V2 to the compensation layer 50 through a signal trace 70 electrically connected thereto; since the anode 41 of the pixel light emitting element 40 and the compensation layer 50 form a capacitor structure, when a high voltage is input to the compensation layer 50, the compensation layer 50 is coupled with the anode 41, and the anode 41 of the corresponding pixel light emitting element 40 increases a voltage, at this time, the voltage of the anode 41 is v=v1+v2, and when the voltage of the anode 41 is increased, the hole injection capability of the pixel light emitting element 40 is enhanced, so that the current flowing through the pixel light emitting element 40 is increased, the brightness of the pixel light emitting element 40 is enhanced, so as to balance the brightness difference of each pixel light emitting element 40 in the same pixel unit 80, and further, the color cast problem of the display panel 100 under a large viewing angle is balanced.
Alternatively, as shown in fig. 4, the compensation layer 50 includes a first compensation layer 51 and a second compensation layer 52, and the second voltage signal input to the first compensation layer 51 is different from the second voltage signal input to the second compensation layer 52.
Specifically, please continue to refer to fig. 4, and referring to fig. 5, in the present embodiment, the compensation layer 50 includes a first compensation layer 51 and a second compensation layer 52, and the second voltage signal input to the first compensation layer 51 is different from the second voltage signal input to the first compensation layer 51; it will be understood that, since the attenuation levels of the pixel light emitting elements 40 of different colors are different, it is necessary to treat the pixel light emitting elements 40 of each color differently so that the brightness of the pixel light emitting elements 40 of each color is substantially the same; when the pixel unit 80 is provided with the three color pixel light emitting elements 40, the color shift problem can be overcome by only adjusting the brightness of the two color pixel light emitting elements 40; in this way, the first compensation layer 51 and the second compensation layer 52 are provided separately, and the voltage signal input to the first compensation layer 51 is different from the voltage signal input to the second compensation layer 52, so that the voltage difference input to the pixel light emitting elements 40 of different colors can be flexibly controlled, and the color cast problem can be effectively improved.
According to the embodiments, the beneficial effects of the application are as follows:
according to the display panel, the display device and the display method, the compensation layer is additionally arranged, the orthographic projection of the compensation layer on the substrate and the orthographic projection of the anodes of the pixel light-emitting elements with at most two colors on the substrate are at least partially overlapped, when the material of the compensation layer is metal, and after the compensation layer is electrified, the compensation layer and the anodes of the pixel light-emitting elements form a capacitance structure to generate coupling, so that the potential of the anodes of the pixel light-emitting elements can be increased, the hole injection capability of the pixel light-emitting elements is promoted, the current flowing through the pixel light-emitting elements is further increased, the luminous efficiency of the pixel light-emitting elements is improved, and the luminous efficiency of the pixel light-emitting elements with at least two colors is increased; therefore, the problem that the luminous efficiencies of the pixel luminous elements with different colors are different is solved, the brightness of each pixel luminous element on the display panel is balanced, and the color cast problem of the display panel under a large viewing angle is further improved.
While the foregoing description illustrates and describes the preferred embodiments of the present application, it is to be understood that this application is not limited to the forms disclosed herein, but is not to be construed as an exclusive use of other embodiments, and is capable of many other combinations, modifications and environments, and adaptations within the scope of the inventive concept described herein, through the foregoing teachings or through the skill or knowledge of the relevant arts. And that modifications and variations which do not depart from the spirit and scope of the present invention are intended to be within the scope of the appended claims.
Claims (11)
1. A display panel, comprising: the display device comprises a first display area and a second display area adjacent to the first display area, wherein the first display area is a plane area, and the second display area is a curved area;
a substrate base;
the pixel light-emitting element is positioned on one side of the substrate close to the light-emitting surface of the display panel and comprises an anode, a pixel light-emitting layer and a cathode which are sequentially stacked;
the compensation layer is positioned in the second display area, and the compensation layer is positioned at one side of the pixel light-emitting element, which is away from the light-emitting surface of the display panel; the orthographic projection of the compensation layer on the substrate is at least partially overlapped with the orthographic projection of the anode of the pixel luminous element with at most two colors on the substrate along the direction perpendicular to the light emitting surface of the display panel;
the compensation layer can be electrified, and after the electrification, the compensation layer and the anode of the pixel light-emitting element form a capacitance structure.
2. The display panel according to claim 1, wherein the pixel light emitting elements include a first color pixel light emitting element, a second color pixel light emitting element, and a third color pixel light emitting element;
the degree of luminance decay of the first color pixel light emitting element and the degree of luminance decay of the second color pixel light emitting element are both greater than the degree of luminance decay of the third color pixel light emitting element;
the orthographic projection of the compensation layer on the substrate is overlapped with the orthographic projection of the anode of the first color pixel luminous element on the substrate at least partially; and/or, an orthographic projection of the compensation layer on the substrate at least partially overlaps an orthographic projection of the anode of the second color pixel light emitting element on the substrate.
3. The display panel of claim 2, wherein the compensation layer comprises a first compensation layer and a second compensation layer, the first compensation layer and the second compensation layer being co-layer disposed;
the orthographic projection of the first compensation layer on the substrate is overlapped with the orthographic projection of the anode of the first color pixel light-emitting element on the substrate;
the orthographic projection of the second compensation layer on the substrate is overlapped with the orthographic projection of the anode of the second color pixel luminous element on the substrate.
4. The display panel of claim 2, further comprising: the signal wires are positioned in the second display area, extend along a first direction and are distributed along a second direction, and the first direction and the second direction are intersected;
the signal wiring is electrically connected with the compensation layer and is used for inputting voltage signals to the compensation layer.
5. The display panel of claim 4, further comprising: a plurality of pixel units, each pixel unit including one of the first color pixel light emitting elements, one of the second color pixel light emitting elements, and one of the third color pixel light emitting elements;
further comprises: a pixel cell column including a plurality of the pixel cells, the pixel cell column extending along the first direction and being arranged along the second direction;
the same pixel unit column corresponds to the same compensation layer, and the compensation layer is electrically connected with the same signal wiring.
6. The display panel according to claim 5, wherein the same pixel unit column corresponds to a plurality of the compensation layers, and the plurality of the compensation layers are respectively electrically connected to different signal traces.
7. The display panel according to claim 5, wherein the same pixel cell column corresponds to a plurality of the compensation layers, the compensation layers include a first compensation layer and a second compensation layer, the first compensation layer is in one-to-one correspondence with the anodes of the first color pixel light emitting elements, and the second compensation layer is in one-to-one correspondence with the anodes of the second color pixel light emitting elements;
the first compensation layers corresponding to the first color pixel light-emitting elements in the same pixel unit column are electrically connected with the same signal wiring;
the second compensation layers corresponding to the second color pixel light emitting elements in the same pixel unit column are electrically connected with the same signal wiring.
8. The display panel according to claim 1, wherein the material of the compensation layer is transparent metal.
9. A display device comprising the display panel according to any one of claims 1-8.
10. A display method applied to the display panel according to any one of claims 1 to 8, the display panel including a driving chip, and a data line and a signal wiring electrically connected to the driving chip, the display method comprising:
the driving chip inputs a first voltage signal V1 to the anode of the pixel light emitting element through a data line electrically connected with the driving chip;
the driving chip inputs a second voltage signal V2 to the compensation layer through a signal wire electrically connected with the driving chip;
the anode of the pixel light emitting element and the compensation layer form a capacitance structure, and at this time, the voltage v=v1+v2 of the anode of the pixel light emitting element.
11. The display method according to claim 10, wherein the compensation layer includes a first compensation layer and a second compensation layer, and wherein a second voltage signal input to the first compensation layer is different from a second voltage signal input to the second compensation layer.
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| WO2023159353A1 (en) * | 2022-02-22 | 2023-08-31 | 京东方科技集团股份有限公司 | Display substrate and manufacturing method therefor, and display apparatus |
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