CN112614876B - Display panel - Google Patents
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- CN112614876B CN112614876B CN202011509871.8A CN202011509871A CN112614876B CN 112614876 B CN112614876 B CN 112614876B CN 202011509871 A CN202011509871 A CN 202011509871A CN 112614876 B CN112614876 B CN 112614876B
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- 230000008054 signal transmission Effects 0.000 claims abstract description 60
- 238000004804 winding Methods 0.000 claims abstract description 25
- 230000007423 decrease Effects 0.000 claims abstract description 15
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 claims description 88
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 230000005525 hole transport Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 153
- 238000010586 diagram Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 239000002346 layers by function Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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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
- H10K59/122—Pixel-defining structures or layers, e.g. banks
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
- H10K59/1315—Interconnections, e.g. wiring lines or terminals comprising structures specially adapted for lowering the resistance
-
- 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
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
- H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The application relates to a display panel, which is provided with a hole area and a display area surrounding at least part of the hole area, wherein a winding area is arranged in the display area; the display panel includes: a plurality of data lines, at least one of which is divided into a first data line and a second data line by a hole region; the data connection line, both ends of the data connection line connect the first data link and second data link separately, and the data connection line distributes in the winding area; the first pixel is positioned in the winding area; the thickness of at least one functional film layer in the first pixel increases or decreases gradually along the signal transmission direction of the data line, so that the current efficiency of the first pixel increases gradually to counteract the decrease of the current along the signal transmission direction of the data line, so that the brightness difference of different positions of the display area along the signal transmission direction of the data line is smaller, the display uniformity of the whole display area is better, and Mura phenomenon at the edge of the slot hole is avoided.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel.
Background
With the development of information technology, display devices such as mobile phones and tablet computers have become an indispensable tool in life, and "full-screen" has become pursued by more and more users, and full-screen technology in which cameras are disposed on the front of a display area can realize extremely full-screen display, which has become a research hotspot.
At present, a front camera is arranged in the slot hole by arranging the slot hole in the display area, so that the screen occupation ratio of the display panel is improved. However, due to the arrangement of the slots, the data lines and the grid lines of the pixels around the slots need to be wound, and the number of the metal wires around the slots is more due to the winding of the data lines, so that on one hand, larger voltage drops are formed on two sides of the slots, on the other hand, larger resistance and coupling capacitance exist, the RC load is larger, and then the current of the data lines around the slots is smaller, so that the problem of poor display uniformity is caused, and even Mura (light spot) bad phenomenon occurs at the edges of the slots.
Disclosure of Invention
In view of the above, it is necessary to provide a display panel capable of avoiding poor display uniformity and Mura (flare) defects even at the edges of the slot.
The application provides a display panel, which is provided with a hole area and a display area surrounding at least part of the hole area, wherein the display area is internally provided with a winding area; the display panel includes:
a plurality of data lines, at least one of the data lines being divided into a first data line and a second data line by the hole region;
the two ends of the data connecting wire are respectively connected with the first data wire and the second data wire, and the data connecting wire is distributed in the winding area;
the first pixel is positioned in the winding area;
along the signal transmission direction of the data line, the thickness of at least one functional film layer in the first pixel increases or decreases gradually, so that the current efficiency of the first pixel increases gradually.
The display panel as described above, optionally, the functional film layer includes one or more of a hole injection layer, a hole transport layer, an electron injection layer, an electron transport layer, an organic light emitting layer, a cathode protection layer, and a lithium fluoride layer.
The display panel as described above, optionally, the cathode layer has a thickness ofAnd the thickness of the cathode layer is gradually increased along the signal transmission direction of the data line.
In the display panel described above, optionally, the first pixel is a red pixel or a green pixel, and the thickness of the cathode protection layer of the first pixel isAnd the thickness of the cathode protection layer is gradually increased along the signal transmission direction of the data line.
In the display panel described above, optionally, the first pixel is a blue pixel, and the thickness of the cathode protection layer of the first pixel isIn the process, the thickness of the cathode protection layer is gradually reduced along the signal transmission direction of the data line; the thickness of the cathode protection layer of the first pixel is +>And the thickness of the cathode protection layer is gradually increased along the signal transmission direction of the data line.
In the display panel described above, optionally, the first pixel is a red pixel or a green pixel, and the lithium fluoride layer of the first pixel has a thickness ofAnd the thickness of the lithium fluoride layer is gradually increased along the signal transmission direction of the data line.
In the display panel described above, optionally, the first pixel is a blue pixel, and the thickness of the lithium fluoride layer of the first pixel isAnd the thickness of the lithium fluoride layer is gradually reduced along the signal transmission direction of the data line.
The display panel as described above, optionally, the display area further includes a first display area located on a side of the hole area away from the signal output end and a second display area other than the first display area, the display area includes a plurality of pixels, and a pixel density of the first display area is smaller than a pixel density of the second display area.
The display panel as described above, optionally, the ratio of the pixel density of the first display area to the pixel density of the second display area is 1/4-1/2.
As described above, in the display panel, optionally, the second display region includes a second pixel, and the thickness of at least one functional film layer in the first pixel is greater than or less than the thickness of the same functional film layer in the second pixel, so that the current efficiency of the first pixel is greater than the current efficiency of the second pixel.
In the display panel provided by the application, according to the luminance formula l=η×i (L is luminance, η is current efficiency of the light emitting unit, I is current), the current efficiency is inversely proportional to the current, and the thickness of at least one functional film layer in the first pixel along the signal transmission direction of the data line is increased or decreased gradually, so that the current efficiency of the first pixel is increased gradually to offset the decrease of the current along the signal transmission direction of the data line, so that the luminance difference at different positions of the display area along the signal transmission direction of the data line is smaller, and the display uniformity of the whole display area is better, and Mura phenomenon at the edge of the slot hole is avoided.
Drawings
In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings required for the descriptions of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic diagram showing a distribution of light emitting units of a display panel according to the prior art;
FIG. 2 is a schematic diagram showing the distribution of data lines of a display panel according to the prior art
FIG. 3 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram showing the distribution of the metal traces in FIG. 1;
FIG. 5 is a schematic diagram showing the distribution of pixels in FIG. 1;
FIG. 6 is a schematic structural diagram of a functional film layer according to an embodiment of the present disclosure;
FIG. 7 is a schematic diagram showing a distribution of the first pixel in FIG. 1;
fig. 8 is a schematic diagram of the distribution of the data lines in fig. 1.
Detailed Description
In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
In the drawings, the size of layers and regions may be exaggerated for clarity of illustration. It will be understood that when a layer or element is referred to as being "on" another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may also be present. In addition, it will also be understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers, or one or more intervening layers may also be present. In addition, like reference numerals refer to like elements throughout.
In the following embodiments, when a layer, region or element is "connected," it can be construed that the layer, region or element is not only directly connected but also connected through other constituent elements interposed therebetween. For example, when a layer, region, element, etc. is described as being connected or electrically connected, the layer, region, element, etc. can be connected or electrically connected not only directly or electrically connected but also through another layer, region, element, etc. interposed therebetween.
Hereinafter, although terms such as "first", "second", etc. may be used to describe various components, these components are not necessarily limited to the above terms. The above terms are used only to distinguish one component from another. It will also be understood that the use of the expression "a" or "an" includes the plural unless the singular is in a context clearly different.
When a statement such as "… …" is located after a column of elements, the entire column of elements is modified instead of modifying individual elements in the column. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.
Although exemplary embodiments of a display module and a display device including the same have been particularly described herein, many modifications and variations will be apparent to those skilled in the art. It will thus be appreciated that display modules constructed in accordance with the principles of the present application and display devices including display modules may be implemented other than as specifically described herein. The application is also defined in the claims and their equivalents.
As described in the background, the front camera is disposed inside the slot by forming the slot in the display area, so as to realize full-screen display. Fig. 1 is a schematic distribution diagram of light emitting units of a display panel in the prior art, and fig. 2 is a schematic distribution diagram of data lines of the display panel in the prior art, as shown in fig. 1 and fig. 2, due to the arrangement of the slot holes 01, the light emitting units 02 corresponding to the positions of the slot holes 01 are removed, so that the data lines 03 need to be wound around the slot holes 01, the number of metal wires around the slot holes 01 is large, the width a of a winding frame 04 around the slot holes 01 is large, on one hand, larger voltage drops are formed on two sides of the slot holes 01, on the other hand, larger resistance and coupling capacitance are present, the RC load is larger, and then the current of the metal wires around the slot holes 01 is smaller, so that the problem of poor display uniformity is caused, and Mura (light spot) phenomenon even occurs at the edges of the slot holes 01.
Since the luminance of the light emitting unit is determined by the following formula l=η×i, where L is the luminance, η is the current efficiency of the light emitting unit, and I is the current, in order to reduce the influence of the arrangement of the slot on the luminance, the inventors found through research that changing the pixel density of the light emitting units on both sides of the slot can reduce the wiring so as to increase the current of the light emitting unit, and changing the thickness of the functional film layer in the light emitting unit can increase the current efficiency of the light emitting unit so as to increase the luminance of the light emitting unit.
For the above reasons, as shown in fig. 3, the present application provides a display panel 10, the display panel 10 having a hole region 100 and a display region 200, the display region 200 surrounding at least part of the hole region 100, and the display region 200 having a wire winding region 210 therein; in a specific arrangement, a slot hole is formed in the hole area 100 for installing a camera or the like, the display area 200 may be disposed around the hole area 100, and the winding area 210 may be an area around the hole area 100 for routing, and the display area 200 may also be disposed around a portion of the hole area 100, for example, the display area 200 may be disposed around the left side or the right side of the hole area 100, and the winding area 210 may be an area left side or the right side of the hole area 100 for routing, which is described below in an embodiment in which the display area 200 may be disposed around the hole area 100 for convenience of description.
As shown in fig. 4, the display panel 10 includes a plurality of data lines 300 and data link lines 400, wherein at least one data line 300 of the plurality of data lines 300 is divided into a first data line 310 and a second data line 320 by a hole region 100, two ends of the data link line 400 are respectively connected to the first data line 310 and the second data line 320, and the data link line 400 is distributed in the winding region 210; when in specific arrangement, the plurality of data lines 300 are all connected with the control module 500, and the control module 500 may be an IC; the number of the data lines 300 divided by the hole regions 100 may be one, two, three or more, and similarly, the number of the data link lines 400 for connecting the first data lines 310 and the second data lines 320 may be one, two, three or more, according to the size of the hole regions 100.
As shown in fig. 5, the display panel 10 further includes first pixels 600, the first pixels 600 are located in the winding area 210, the number of the first pixels 600 is a plurality, and the plurality of first pixels 600 are arranged in an array, wherein the thickness of at least one functional film 700 in the first pixels 600 increases or decreases gradually along the signal transmission direction of the data line 300, so as to increase the current efficiency of the first pixels 600. The signal transmission direction refers to a direction from the signal output end to the signal input end, that is, a direction from the control module 500 to the first pixel 600. In a specific arrangement, the number of functional layers 700 with increasing or decreasing thickness in the first pixel 600 may be one, more than one or all, and by adjusting the thickness of one functional layer 700 in the first pixel 600, the current efficiency of the first pixel 600 is gradually increased. Through the thickness adjustment of the plurality of functional film layers 700 in the plurality of first pixels 600, the current efficiency of the first pixels 600 can be gradually increased by the thickness adjustment of each functional film layer 700, and the current efficiency improving effects of the first pixels 600 are overlapped by the thickness adjustment of the plurality of functional film layers 700, so that the current efficiency improving amplitude of the first pixels 600 is larger.
In the above display panel 10, as can be seen from the luminance formula l=η×i, the current efficiency is inversely proportional to the current, and the thickness of at least one functional film 700 in the first pixel 600 along the signal transmission direction of the data line 300 increases or decreases gradually, so that the current efficiency of the first pixel 600 increases gradually to counteract the decrease of the current along the signal transmission direction of the data line 300, so that the luminance difference at different positions of the display area 200 along the signal transmission direction of the data line 300 is smaller, and thus the display uniformity of the whole display area 200 is better, and Mura defect at the edge of the hole area 100 is avoided.
To facilitate thickness adjustment, as shown in fig. 6, a preferred embodiment, the functional film layer 700 includes one or more of a cathode layer 710, a cathode protection layer 720, and a lithium fluoride layer 730. Of course, the functional film 700 is not limited thereto, and may include other film layers capable of achieving an effect of adjusting the current efficiency of the first pixel 600 by changing the thickness, for example, the functional film 700 may further include a hole injection layer 740, a hole transport layer 750, an electron injection layer 760, an electron transport layer 770, and an organic light emitting layer 780. In a specific arrangement, the first pixel 600 includes an anode layer, a hole injection layer 740, a hole transport layer 750, an organic light emitting layer 780, an electron injection layer 760, an electron transport layer 770, a cathode layer 710, a cathode protection layer 720, and a lithium fluoride layer 730, which are sequentially disposed on a substrate.
In the display panel 10, the thickness of any one or more of the functional layers 700 is adjusted so that the thickness of one or more of the same functional layers 700 in the first pixel 600 becomes larger or smaller, and the thicknesses of the remaining functional layers 700 are the same, so that the current efficiency of the first pixel 600 is increased gradually to counteract the decrease of the current along the signal transmission direction of the data line 300, and the brightness difference at different positions of the display area 200 along the signal transmission direction of the data line 300 is smaller. Or, the thickness of the whole functional film 700 in the first pixel 600 becomes larger or smaller gradually, so that the current efficiency of the first pixel 600 can be increased gradually to better counteract the decrease of the current along the signal transmission direction of the data line 300, so that the brightness difference of different positions of the display area 200 along the signal transmission direction of the data line 300 is smaller, and the display uniformity of the whole display area is better.
For ease of understanding, the device efficiencies of the different thicknesses of the functional film 700 are compared below, wherein table 1 shows the device efficiencies of the different thicknesses of the cathode layer 710, table 2 shows the device efficiencies of the different thicknesses of the cathode protection layer 720, and table 3 shows the device efficiencies of the different thicknesses of the lithium fluoride layer 730.
TABLE 1
TABLE 2
TABLE 3 Table 3
As can be seen from Table 1, the cathode layer 710 has a thickness ofIn between, as the thickness of the cathode layer 710 increases along the signal transmission direction of the data line 300, the current efficiency of the pixel increases. As can be seen from Table 2, the thickness of the cathode protection layer 720 is +.>In between, as the thickness of the cathode protection layer 720 increases along the signal transmission direction of the data line 300, the current efficiency of the red pixel and the green pixel increases; the cathode protection layer 720 has a thickness of +>In between, as the thickness of the cathode protection layer 720 increases along the signal transmission direction of the data line 300, the current efficiency of the blue pixel increases, and the thickness of the cathode protection layer 720 is +.>In between, as the thickness of the cathode protection layer 720 decreases along the signal transmission direction of the data line 300, the current efficiency of the blue pixel increases. As can be seen from Table 3, the thickness of the lithium fluoride layer 730 is +.>Along data line 3The signal transmission direction of 00 increases with the increase in the thickness of the lithium fluoride layer 730, and the current efficiency of the red pixel and the green pixel increases; the thickness of the lithium fluoride layer 730 is +.>In between, as the thickness of the lithium fluoride layer 730 decreases in the signal transmission direction of the data line 300, the current efficiency of the blue pixel increases.
In order to facilitate adjustment of the current efficiency of the first pixel 600, in particular, the thickness of the cathode layer 710 of the first pixel 600 may beIn this case, the thickness of the cathode layer 710 in the first pixel 600 gradually increases along the signal transmission direction of the data line 300, and alternatively, the first pixel 600 may be a red pixel, a green pixel, or a blue pixel. Of course, the thickness range of the cathode layer 710 of the first pixel 600 is not limited thereto, and may be other ranges capable of satisfying the effect that the current efficiency of the first pixel 600 increases with the thickness variation.
In the display panel 10, the thickness of the cathode layer 710 in the first pixel 600 isIn this case, the thickness of the cathode layer 710 in the first pixel 600 is gradually increased along the signal transmission direction of the data line 300, so that on one hand, the current efficiency of the first pixel 600 is gradually increased along the signal transmission direction of the data line 300, and on the other hand, the current efficiency of the first pixel 600 is gradually increased by increasing the thickness of the cathode layer 710, so that the current efficiency of the first pixel 600 is conveniently adjusted. When specifically set up, when->When the thickness of the cathode layer 710 is adjusted in this interval, the thickness of the cathode layer 710 in the first pixel 600 may be varied in a range +.> And +.>Of course, the thickness variation range of the cathode layer 710 in the first pixel 600 is not limited thereto, and may be +.>Other thickness intervals within this interval, and specific intervals of the thickness of the cathode layer 710 may be determined according to the actual situation of the display panel 10 described above.
In order to facilitate adjustment of the current efficiency of the first pixel 600, specifically, the thickness of the cathode protection layer 720 of the first pixel 600 may beIn this case, the first pixel 600 is a red pixel or a green pixel, and the thickness of the cathode protection layer 720 in the first pixel 600 gradually increases along the signal transmission direction of the data line 300. Of course, the thickness range of the cathode protection layer 720 of the first pixel 600 is not limited thereto, and may be other ranges capable of satisfying the effect that the current efficiency of the first pixel 600 increases with the thickness variation.
In the display panel 10, the first pixel 600 is a red pixel or a green pixel, and the thickness of the cathode protection layer 720 in the first pixel 600 isIn this case, along the signal transmission direction of the data line 300, the thickness of the cathode protection layer 720 in the first pixel 600 is gradually increased, so that on one hand, the current efficiency of the first pixel 600 is gradually increased along the signal transmission direction of the data line 300, and on the other hand, the current efficiency of the red pixel or the green pixel is gradually increased by gradually increasing the thickness of the cathode protection layer 720, so that the current efficiency of the first pixel 600 is conveniently adjusted. When specifically arranged, whenWhen the thickness of the cathode protection layer 720 is adjusted in this interval, the thickness variation range of the cathode protection layer 720 in the first pixel 600 along the signal transmission direction of the data line 300 may be +.> Of course, the thickness variation range of the cathode protection layer 720 in the first pixel 600 is not limited thereto, and may beOther thickness intervals within this interval, and specific intervals of the thickness of the cathode protection layer 720 may be determined according to the actual situation of the display panel 10 described above.
In order to facilitate adjustment of the current efficiency of the first pixel 600, specifically, the first pixel 600 is a blue pixel, the thickness of the cathode protection layer 720 of the first pixel 600 may beIn this case, the thickness of the cathode protection layer 720 in the first pixel 600 is gradually reduced along the signal transmission direction of the data line 300, and the thickness of the cathode protection layer 720 in the first pixel 600 isIn this case, the thickness of the cathode protection layer 720 in the first pixel 600 gradually increases along the signal transmission direction of the data line 300. Of course, the thickness range of the cathode protection layer 720 of the first pixel 600 is not limited thereto, and may be other ranges capable of satisfying the effect that the current efficiency of the first pixel 600 increases with the thickness variation.
In the display panel 10, the first pixel 600 is a blue pixel, and the first pixelThe cathode protection layer 720 in element 600 has a thickness ofIn the signal transmission direction of the data line 300, the thickness of the cathode protection layer 720 in the first pixel 600 is gradually reduced, and the thickness of the cathode protection layer 720 in the first pixel 600 is ∈ ->In this case, along the signal transmission direction of the data line 300, the thickness of the cathode protection layer 720 in the first pixel 600 is gradually increased, so that on one hand, the current efficiency of the first pixel 600 is gradually increased along the signal transmission direction of the data line 300, and on the other hand, the current efficiency of the blue pixel is gradually increased by adjusting the thickness of the cathode protection layer 720, so that the current efficiency of the first pixel 600 is conveniently adjusted. When specifically set up, when->When the thickness of the cathode protection layer 720 is adjusted in this interval, the thickness variation range of the cathode protection layer 720 in the first pixel 600 along the signal transmission direction of the data line 300 may be And +.>When->When the thickness of the cathode protection layer 720 is adjusted in this interval, the thickness variation range of the cathode protection layer 720 in the first pixel 600 along the signal transmission direction of the data line 300 may be +.> AndOf course, the thickness variation range of the cathode protection layer 720 in the first pixel 600 is not limited thereto, and may be +.>Other thickness intervals in the two intervals, and the specific interval of the thickness of the cathode protection layer 720 can be determined according to the actual situation of the display panel 10.
In order to conveniently adjust the current efficiency of the first pixel 600, in particular, the thickness of the lithium fluoride layer 730 of the first pixel 600 isIn this case, the first pixel 600 is a red pixel or a green pixel, and the thickness of the lithium fluoride layer 730 in the first pixel 600 gradually increases along the signal transmission direction of the data line 300. Of course, the thickness range of the lithium fluoride layer 730 of the first pixel 600 is not limited thereto, and may be other ranges capable of satisfying the effect that the current efficiency of the first pixel 600 increases with the thickness variation.
In the display panel 10, the first pixel 600 is a red pixel or a green pixel, and the thickness of the lithium fluoride layer 730 in the first pixel 600 isIn this case, the thickness of the lithium fluoride layer 730 in the first pixel 600 is gradually increased along the signal transmission direction of the data line 300, so that on one hand, the current efficiency of the first pixel 600 is gradually increased along the signal transmission direction of the data line 300, and on the other hand, the current efficiency of the red pixel or the green pixel is gradually increased by increasing the thickness of the lithium fluoride layer 730, so that the current efficiency of the first pixel 600 is conveniently adjusted. When specifically set up, when->When the thickness of the lithium fluoride layer 730 is adjusted in this interval, the thickness of the lithium fluoride layer 730 in the first pixel 600 may vary within a range of +.> And +.>Of course, the thickness variation range of the lithium fluoride layer 730 in the first pixel 600 is not limited thereto, and may be +.>Other thickness intervals within this interval, and specific intervals of the thickness of the lithium fluoride layer 730 may be determined according to the actual situation of the display panel 10 described above.
In order to conveniently adjust the current efficiency of the first pixel 600, in particular, the thickness of the lithium fluoride layer 730 of the first pixel 600 isIn this case, the first pixel 600 is a blue pixel, and the thickness of the lithium fluoride layer 730 in the first pixel 600 gradually decreases along the signal transmission direction of the data line 300. Of course, the thickness range of the lithium fluoride layer 730 of the first pixel 600 is not limited thereto, and may be other ranges capable of satisfying the effect that the current efficiency of the first pixel 600 increases with the thickness variation.
In the display panel 10, the first pixel 600 is a blue pixel, and the thickness of the lithium fluoride layer 730 in the first pixel 600 isIn this case, the thickness of the lithium fluoride layer 730 in the first pixel 600 is gradually reduced along the signal transmission direction of the data line 300, so that the current efficiency of the first pixel 600 is gradually increased along the signal transmission direction of the data line 300, and the thickness of the lithium fluoride layer 730 is gradually reduced by the reductionThe thickness of the lithium fluoride layer 730 can ensure that the current efficiency of the blue pixel is gradually increased, and the current efficiency of the first pixel 600 is conveniently adjusted. When specifically set up, when->When the thickness of the lithium fluoride layer 730 is adjusted in this interval, the thickness of the lithium fluoride layer 730 in the first pixel 600 may vary within a range of +.> And +.>Of course, the thickness variation range of the lithium fluoride layer 730 in the first pixel 600 is not limited thereto, and may be +.>Other thickness intervals within this interval, and specific intervals of the thickness of the lithium fluoride layer 730 may be determined according to the actual situation of the display panel 10 described above.
The design of the thickness variation of the functional film layer needs to be combined with the specific winding design of the display panel and the variation trend among the film layers in the functional film layer, so that the effect of uniformity of the whole display panel is achieved.
In order to improve the problem of the uneven display, in a preferred embodiment, the display area 200 includes a first display area 220 and a second display area 230, wherein the first display area 220 is located at a side of the hole area 100 away from the signal output end, that is, the first display area 220 is located at a side of the hole area 100 away from the control module 500, and the second display area 230 is an area of the display area 200 except for the first display area 220. The display area 200 includes a plurality of pixels, and the pixel density of the first display area 220 is less than that of the second display area 230. In a specific arrangement, as shown in fig. 5, 7 and 8, the plurality of first pixels 600 are arranged in rows, the data lines 300 blocked by the hole area 100 have 6 pieces, 4 data lines 300 in the 6 data lines 300 are divided by the hole area 100, the 6 data lines 300 on the side of the hole area 100 close to the control module 500 are respectively connected with the 6 rows of first pixels 600, the 4 first data lines 310 on the side of the hole area 100 far from the control module 500 are connected with the 4 rows of first pixels 600, the pixel density of the first display area 220 is smaller than the pixel density of the second display area 230, and the 4 rows of first pixels 600 are connected with the 4 first data lines 310, and the 4 first data lines 310 are uniformly arranged, so that the number of the first data lines 310 extending around the hole area 100 is smaller, and the size b of the wire winding area 210 around the hole area 100 is smaller than the width a of the wire winding 04 in the prior art, so that the width of the wire winding area 210 around the hole area 100 is smaller.
In the display panel 10 described above, the pixel density of the first display area 220 is smaller than that of the second display area 230, so that the number of pixels of the first display area 220 is smaller than that of pixels of the second display area 230, so that the number of first data lines 310 for connecting the pixels of the second display area 230 is smaller, the number of first data lines 310 extending around the hole area 100 is smaller, the number of wires required in the plurality of data lines 300 is smaller, so that the number of metal wires around the hole area 100 is reduced, the wire winding area 210 is smaller, on one hand, the arrangement of the metal wires around the hole area 100 can be facilitated, on the other hand, the RC load is smaller, so that the magnitude of voltage drop current reduction of the first display area 220 relative to the second display area 230 is smaller, the brightness difference between the first display area 220 and the second display area 230 is smaller, so that the display uniformity of the whole display area 200 is better, and Mura defect phenomenon at the edge of the hole area 100 is avoided.
In order to further improve the display uniformity, as shown in fig. 5, 7 and 8, a ratio of the pixel density of the first display area 220 to the pixel density of the second display area 230 may be 1/4-1/2 in a preferred embodiment. Of course, the ratio of the pixel density of the first display area 220 to the pixel density of the second display area 230 is not limited to the above range, and may be other values capable of achieving better display uniformity.
In the display panel 10, the ratio of the pixel density of the first display area 220 to the pixel density of the second display area 230 is 1/4-1/2, so that on one hand, the pixel density of the first display area 220 can be further ensured to be smaller than the pixel density of the second display area 230, so that the number of windings of the data line 300 is reduced, the size of the winding area 210 is reduced, and the problem of uneven display caused by the windings of the data line 300 can be improved; on the other hand, the arrangement of the first pixels 600 at two sides of the hole area 100 can be facilitated, so that the arrangement of the first pixels 600 and the data lines 300 is simple and convenient, and the winding of the data lines 300 is facilitated. In a specific arrangement, the ratio of the pixel density of the first display area 220 to the pixel density of the second display area 230 may be 1/4, 7/24, 1/3, 3/8, 5/12, 11/24, and 1/2. Of course, the ratio of the pixel density of the first display area 220 to the pixel density of the second display area 230 is not limited to the above values, but may be other values in the range of 1/4 to 1/2. The specific value of the ratio of the pixel density of the first display area 220 to the pixel density of the second display area 230 may be selected according to the actual situation of the display panel 10.
In order to further improve the display uniformity, as shown in fig. 3 and 5, in a preferred embodiment, the second display area 230 includes the second pixels 800, and the thickness of at least one functional film 700 in the first pixels 600 is greater or less than the thickness of the same functional film 700 in the second pixels 800, so that the current efficiency of the first pixels 600 is greater than that of the second pixels 800. In a specific arrangement, the thickness of at least one functional film 700 in the first pixel 600 may be greater than the thickness of the same functional film 700 in the second pixel 800, and the thickness of the functional film 700 in the first pixel 600 is gradually increased based on the thickness of the functional film 700 in the second pixel 800, and the current efficiency of the first pixel 600 is greater than the current efficiency of the second pixel 800, so that the current efficiency of the first pixel 600 is gradually increased along the signal transmission direction of the data line 300. The thickness of at least one functional film 700 in the first pixel 600 may be smaller than the thickness of the same functional film 700 in the second pixel 800, and the thickness of the functional film 700 in the first pixel 600 is gradually reduced based on the thickness of the functional film 700 in the second pixel 800, and the current efficiency of the first pixel 600 is greater than the current efficiency of the second pixel 800, so that the current efficiency of the first pixel 600 is gradually increased along the signal transmission direction of the data line 300.
In the display panel 10, the thickness of at least one functional film 700 in the first pixel 600 is greater than or less than the thickness of the same functional film 700 in the second pixel 800, so that the current efficiency of the first pixel 600 is greater than the current efficiency of the second pixel 800, and the light-emitting efficiency of the first pixel 600 is greater than the light-emitting efficiency of the second pixel 800. Even if the pixel density of the first pixel 600 is lower than that of the second pixel 800, the light emitting efficiency of the first pixel 600 is higher than that of the second pixel 800, so as to increase the brightness of the first display area 220 and reduce the brightness difference between the first display area 220 and the second display area 230, so that the display uniformity of the whole display area is better, and Mura defect at the edge of the hole area 100 is avoided.
In a specific arrangement, the functional film 700 is a cathode layer 710, and the cathode layer 710 of the first pixel 600 has a thickness ofThe thickness of the cathode layer 710 of the second pixel 800 may be less than +.>For another example, the functional film 700 is a cathode protection layer 720, the first pixel 600 and the second pixel 800 are red pixels or green pixels, and the thickness of the cathode protection layer 720 of the first pixel 600 is ∈>The thickness of the cathode protection layer 720 of the second pixel 800 is less than + ->For another example, the functional film 700 is a lithium fluoride layer 730, the first pixel 600 and the second pixel 800 are red pixels or green pixels, and the thickness of the lithium fluoride layer 730 of the first pixel 600 is ∈>The thickness of the lithium fluoride layer 730 of the first pixel 600 is less than + ->For another example, the functional film 700 is a cathode protection layer 720, the first pixel 600 and the second pixel 800 are blue pixels, and the thickness of the cathode protection layer 720 of the first pixel 600 is +.>The thickness of the cathode protection layer 720 of the second pixel 800 is greater than + ->For another example, the functional film 700 is a lithium fluoride layer 730, the first pixel 600 and the second pixel 800 are blue pixels, and the thickness of the lithium fluoride layer 730 of the first pixel 600 is +.>The thickness of the lithium fluoride layer 730 of the first pixel 600 is less than + ->
Based on the same inventive concept, the present application provides a display device including the display panel 10 of any one of the above-described aspects. It may be understood that the display device in the embodiments of the present application may be any product or component having a display function, such as an OLED display device, a QLED display device, an electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, a wearable device, or an internet of things device, which is not limited in the embodiments disclosed in the present application.
In the above display device, since the thickness of at least one functional film 700 in the first pixel 600 increases or decreases along the signal transmission direction of the data line 300 of the display panel 10, the current efficiency of the first pixel 600 can be gradually increased to offset the decrease of the current along the signal transmission direction of the data line 300, so that the brightness difference of different positions of the display area 200 along the signal transmission direction of the data line 300 is smaller, and thus the display uniformity of the whole display area 200 is better, and Mura defect phenomenon at the edge of the hole area 100 is avoided. Therefore, the display device with the display panel 10 has better display effect and improves the viewing experience of users.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least a portion of the steps in the figures may include steps or stages that are not necessarily performed at the same time, but may be performed at different times, nor does the order in which the steps or stages are performed necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the steps or stages in other steps. In the description of the present specification, reference to the terms "some embodiments," "other embodiments," "desired embodiments," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (10)
1. A display panel, characterized by having a hole area and a display area surrounding at least part of the hole area, and the display area having a winding area therein; the display panel includes:
a plurality of data lines, at least one of the data lines being divided into a first data line and a second data line by the hole region;
the two ends of the data connecting wire are respectively connected with the first data wire and the second data wire, and the data connecting wire is distributed in the winding area;
the first pixel is positioned in the winding area;
along the signal transmission direction of the data line, the thickness of at least one functional film layer in the first pixel increases or decreases gradually, so that the current efficiency of the first pixel increases gradually.
2. The display panel of claim 1, wherein the functional film layer comprises one or more of a hole injection layer, a hole transport layer, an electron injection layer, an electron transport layer, an organic light emitting layer, a cathode protection layer, and a lithium fluoride layer.
3. The display panel of claim 2, wherein the cathode layer has a thickness ofAnd the thickness of the cathode layer is gradually increased along the signal transmission direction of the data line.
4. The display panel according to claim 2, wherein the first pixel is a red pixel or a green pixel, and the cathode protection layer of the first pixel has a thickness ofAnd the thickness of the cathode protection layer is gradually increased along the signal transmission direction of the data line.
5. The display panel of claim 2, wherein the first pixel is a blue pixel, and the cathode protection layer of the first pixel has a thickness ofIn the process, the thickness of the cathode protection layer is gradually reduced along the signal transmission direction of the data line; the thickness of the cathode protection layer of the first pixel is +>And the thickness of the cathode protection layer is gradually increased along the signal transmission direction of the data line.
6. The display panel according to claim 2, wherein the first pixel is a red pixel or a green pixel, and the lithium fluoride layer of the first pixel has a thickness ofAnd the thickness of the lithium fluoride layer is gradually increased along the signal transmission direction of the data line.
7. The display panel of claim 2, wherein the first pixel is a blue pixel, and the lithium fluoride layer of the first pixel has a thickness ofAnd the thickness of the lithium fluoride layer is gradually reduced along the signal transmission direction of the data line.
8. The display panel of claim 1, wherein the display area further comprises a first display area located on a side of the aperture area remote from the signal output end and a second display area other than the first display area, the display area comprising a plurality of pixels, the first display area having a pixel density less than a pixel density of the second display area.
9. The display panel of claim 8, wherein a ratio of a pixel density of the first display area to a pixel density of the second display area is 1/4-1/2.
10. The display panel of claim 8, wherein the second display region includes a second pixel, and wherein a thickness of at least one functional film layer in the first pixel is greater than or less than a thickness of a same functional film layer in the second pixel such that a current efficiency of the first pixel is greater than a current efficiency of the second pixel.
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| CN110323257A (en) * | 2019-04-12 | 2019-10-11 | 武汉天马微电子有限公司 | Array substrate, display panel and display device |
| CN110780501A (en) * | 2019-11-29 | 2020-02-11 | 武汉天马微电子有限公司 | Display panel and display device |
| CN111312074A (en) * | 2020-02-25 | 2020-06-19 | 武汉天马微电子有限公司 | Display panel and display device |
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| CN106816453A (en) * | 2015-11-03 | 2017-06-09 | 乐金显示有限公司 | Organic LED display device |
| CN110323257A (en) * | 2019-04-12 | 2019-10-11 | 武汉天马微电子有限公司 | Array substrate, display panel and display device |
| CN110780501A (en) * | 2019-11-29 | 2020-02-11 | 武汉天马微电子有限公司 | Display panel and display device |
| CN111312074A (en) * | 2020-02-25 | 2020-06-19 | 武汉天马微电子有限公司 | Display panel and display device |
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