CN112614876A - Display panel - Google Patents
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- CN112614876A CN112614876A CN202011509871.8A CN202011509871A CN112614876A CN 112614876 A CN112614876 A CN 112614876A CN 202011509871 A CN202011509871 A CN 202011509871A CN 112614876 A CN112614876 A CN 112614876A
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- 230000008054 signal transmission Effects 0.000 claims abstract description 63
- 238000004804 winding Methods 0.000 claims abstract description 29
- 230000003247 decreasing effect Effects 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims description 180
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 claims description 86
- 239000011241 protective layer Substances 0.000 claims description 11
- 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
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 230000007423 decrease Effects 0.000 description 7
- 230000007547 defect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000000758 substrate Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 101100356278 Dictyostelium discoideum redA gene Proteins 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000004210 cathodic protection Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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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
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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
- H10K59/131—Interconnections, e.g. wiring lines or terminals
- H10K59/1315—Interconnections, e.g. wiring lines or terminals comprising structures specially adapted for lowering the resistance
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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
- H10K59/30—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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Abstract
The application relates to a display panel, which is provided with an aperture area and a display area surrounding at least part of the aperture 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 which is divided into a first data line and a second data line by the hole region; the two ends of the data connecting line are respectively connected with the first data line and the second data line, and the data connecting line is distributed in the winding area; a first pixel located in the winding area; the thickness of at least one functional film layer in the first pixel is gradually increased or decreased along the signal transmission direction of the data line, so that the current efficiency of the first pixel is gradually increased, the reduction of the current along the signal transmission direction of the data line is counteracted, 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 the phenomenon of poor Mura at the edge of a slot hole is avoided.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a display panel.
Background
With the development of information technology, display devices such as mobile phones and tablet computers have become indispensable tools in people's lives, a full-screen is also pursued by more and more users, and a full-screen technology of arranging a camera on the front side of a display area is a hot point for research due to the fact that the full-screen technology can achieve extremely full display.
At present, a slotted hole is formed in a display area, a front camera is arranged inside the slotted hole, and the screen occupation ratio of a display panel is improved. However, due to the arrangement of the slot holes, the data lines and the grid lines of the pixels around the slot holes need to be arranged in a winding manner, and the number of metal wires around the slot holes is large due to the winding of the data lines, so that on one hand, large voltage drop is formed on two sides of the slot holes, and on the other hand, large resistance and coupling capacitance exist, so that the RC load is large, further, the current of the data lines around the slot holes is small, the problem of poor display uniformity is caused, and even the phenomenon of poor Mura (light spot) appears at the edge of the slot holes.
Disclosure of Invention
In view of the above, there is a need to provide a display panel that can avoid poor display uniformity and even Mura (flare) defects at the edges of the slot holes.
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 partitioned into a first data line and a second data line by the aperture region;
the two ends of the data connecting line are respectively connected with a first data line and a second data line, and the data connecting line is distributed in the winding area;
the first pixel is positioned in the winding area;
wherein, along the signal transmission direction of the data line, the thickness of at least one functional film layer in the first pixel is increased or decreased gradually, so that the current efficiency of the first pixel is increased 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 of
The cathode layer has a thickness gradually increasing along a signal transmission direction of the data line。
Optionally, the first pixel is a red pixel or a green pixel, and the cathode protection layer of the first pixel has a thickness of
In the meantime, the thickness of the cathode protective layer is gradually increased along the signal transmission direction of the data line.
Optionally, the first pixel is a blue pixel, and the cathode protection layer of the first pixel has a thickness of
When the data line is used, the thickness of the cathode protection layer is gradually reduced along the signal transmission direction of the data line; the cathode protection layer of the first pixel has a thickness of
In the meantime, the thickness of the cathode protective layer is gradually increased along the signal transmission direction of the data line.
The display panel as described above, optionally, the first pixel is a red pixel or a green pixel, and the thickness of the lithium fluoride layer of the first pixel is
In the meantime, the thickness of the lithium fluoride layer is gradually increased along the signal transmission direction of the data line.
The display panel as described above, optionally, the first pixel is a blue pixel, and the thickness of the lithium fluoride layer of the first pixel is
In the meantime, 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 region further includes a first display region located on a side of the aperture region away from the signal output terminal, and a second display region excluding the first display region, the display region includes a plurality of pixels, and the pixel density of the first display region is smaller than the pixel density of the second display region.
The display panel as described above, optionally, a ratio of the pixel density of the first display region to the pixel density of the second display region is 1/4-1/2.
As above, optionally, the second display region includes a second pixel, and a thickness of at least one functional film layer in the first pixel is greater than or less than a thickness of the same functional film layer in the second pixel, so that a current efficiency of the first pixel is greater than a current efficiency of the second pixel.
In the display panel provided by the application, according to a 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, 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 progressively, the current efficiency of the first pixel can be increased progressively to counteract the decrease of the current along the signal transmission direction of the data line, so that the luminance difference of different positions of the display area along the signal transmission direction of the data line is smaller, thereby the display uniformity of the whole display area is better, and the Mura phenomenon at the edge of the slot hole is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram illustrating a distribution of light emitting units of a display panel in the prior art;
FIG. 2 is a schematic diagram of a data line distribution of a display panel in the prior art
FIG. 3 is a schematic structural diagram of a display panel according to an embodiment of the present application;
FIG. 4 is a schematic diagram of the distribution of metal traces in FIG. 1;
FIG. 5 is a schematic diagram of the distribution of the pixels in FIG. 1;
FIG. 6 is a schematic structural diagram of a functional film according to an embodiment of the present application;
FIG. 7 is a schematic diagram of the distribution of the first pixels in FIG. 1;
fig. 8 is a schematic distribution diagram of the data lines in fig. 1.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth 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 present 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 "secured 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 as used herein are for illustrative purposes only.
In the drawings, the size of layers and regions may be exaggerated for clarity. 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. Like reference numerals refer to like elements throughout.
In the following embodiments, when layers, regions or elements are "connected", it may be interpreted that the layers, regions or elements are not only directly connected but also connected through other constituent elements interposed therebetween. For example, when layers, regions, elements, etc. are described as being connected or electrically connected, the layers, regions, elements, etc. may be connected or electrically connected not only directly or directly but also through another layer, region, element, etc. interposed therebetween.
Hereinafter, although terms such as "first", "second", and the like may be used to describe various components, the components are not necessarily limited to the above terms. The above terms are only used to distinguish one component from another. It will also be understood that expressions used in the singular include expressions of the plural unless the singular has a distinctly different meaning in the context.
When a statement such as "at least one (or" an) of … … is placed after a list of elements (elements), the entire list of elements (elements) is modified rather than modifying individual elements (elements) in the list. As used herein, the term "and/or" 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/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.
Although exemplary embodiments of a display module and a display apparatus including the same have been particularly described herein, many modifications and variations will be apparent to those skilled in the art. Accordingly, it will be understood that display modules and display devices including display modules constructed in accordance with the principles of the present application 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 hole by forming the slot hole 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 a display panel in the prior art, as shown in fig. 1 and fig. 2, due to the arrangement of a slot 01, a light-emitting unit 02 corresponding to the position of the slot 01 is removed, so that the data lines 03 need to be arranged around the slot 01 in a winding manner, which results in a large number of metal wires around the slot 01, and a width a of a winding frame 04 around the slot 01 is large, which results in a large voltage drop on both sides of the slot 01 on the one hand, and a large resistor and a large coupling capacitor on the other hand, which results in a large RC load, and further causes a small current of the metal wires around the slot 01, which results in a poor display uniformity problem, and even a Mura (light spot) defect phenomenon at the.
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 slots on the luminance, the inventors found through research that the winding can be reduced by changing the pixel density of the light emitting unit on both sides of the slot, so that the current of the light emitting unit is increased, and the current efficiency of the light emitting unit can be increased by changing the thickness of the functional film layer in the light emitting unit, so that the luminance of the light emitting unit is improved.
For the above reasons, as shown in fig. 3, the present application provides a display panel 10, the display panel 10 having an aperture area 100 and a display area 200, the display area 200 surrounding at least a portion of the aperture area 100, and the display area 200 having a winding area 210 therein; when specifically configured, a slot is disposed in the hole area 100 for mounting a camera and the like, the display area 200 may be disposed around the hole area 100, in this case, the winding area 210 is an area around the hole area 100 for routing, 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, in this case, the winding area 210 is an area on the left side or the right side of the hole area 100 for routing, and for convenience of description, the following description will be made with an embodiment in which the display area 200 may be disposed around the hole area 100.
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 the 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 lines 400 are distributed in the winding region 210; in a specific configuration, the plurality of data lines 300 are all connected to the control module 500, and the control module 500 may be an IC; according to the size of the hole area 100, the number of the data lines 300 divided by the hole area 100 may be one, two, three, or more, and similarly, the number of the data connection lines 400 for connecting the first data line 310 and the second data line 320 may be one, two, three, or more.
As shown in fig. 5, the display panel 10 further includes a plurality of first pixels 600, the first pixels 600 are located in the winding region 210, 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 along the signal transmission direction of the data line 300, so that the current efficiency of the first pixels 600 increases gradually. The signal transmission direction refers to a direction from the signal output terminal to the signal input terminal, that is, a direction from the control module 500 to the first pixel 600. In a specific configuration, the number of the functional film layers 700 in the first pixel 600, which are increased or decreased in thickness, may be one, multiple or all, and the current efficiency of the first pixel 600 is gradually increased by adjusting the thickness of one functional film layer 700 in the first pixel 600. By adjusting the thickness of the plurality of functional film layers 700 in the plurality of first pixels 600, the current efficiency of the first pixel 600 can be gradually increased by adjusting the thickness of each functional film layer 700, and the current efficiency improvement effects of the first pixel 600 are superposed by adjusting the thickness of the plurality of functional film layers 700, so that the current efficiency improvement amplitude of the first pixel 600 is larger.
In the 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 increases or decreases along the signal transmission direction of the data line 300, so that the current efficiency of the first pixel 600 can be gradually increased to counteract the decrease of the current along the signal transmission direction of the data line 300, and the luminance difference at different positions of the display area 200 along the signal transmission direction of the data line 300 is small, so that the display uniformity of the entire display area 200 is good, and the Mura defect at the edge of the hole area 100 is avoided.
To facilitate thickness adjustment, as shown in fig. 6, in 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 layer 700 is not limited thereto, and may further include other film layers capable of achieving the effect of adjusting the current efficiency of the first pixel 600 by changing the thickness, for example, the functional film layer 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 film layers 700 is adjusted such that the thickness of one or more of the same functional film layers 700 in the first pixel 600 is gradually increased or decreased, and the thickness of the remaining functional film layers 700 is the same, so that the current efficiency of the first pixel 600 is gradually increased to offset 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 small. Or, the thicknesses of all the functional film layers 700 in the first pixel 600 are gradually increased or decreased, so that the current efficiency of the first pixel 600 can be gradually increased to better offset 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, thereby improving the display uniformity of the whole display area.
For ease of understanding, the device efficiencies for different thicknesses of the functional film layer 700 are compared below, where table 1 shows the device efficiencies for different cathode layer 710 thicknesses, table 2 shows the device efficiencies for different cathode protection layer 720 thicknesses, and table 3 shows the device efficiencies for different lithium fluoride layer 730 thicknesses.
TABLE 1
TABLE 2
TABLE 3
As can be seen from table 1, the cathode layer 710 is at a thickness of
In between, as the thickness of the cathode layer 710 increases in 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 cathodic protection layer 720 is at
Meanwhile, as the thickness of the cathode protective layer 720 increases in the signal transmission direction of the data line 300, the current efficiency of the red and green pixels increases; the thickness of the cathode protection layer 720 is
In between, as the thickness of the cathode protective layer 720 increases in the signal transmission direction of the data line 300, the current efficiency of the blue pixel increases, and the thickness of the cathode protective layer 720 is in
In between, as the thickness of the cathode protective layer 720 is reduced in the signal transmission direction of the data line 300, the current efficiency of the blue pixel is increased. As can be seen from Table 3, the lithium fluoride layer 730 is at a thickness
In between, as the thickness of the lithium fluoride layer 730 increases along the signal transmission direction of the data line 300, the current efficiency of the red and green pixels increases; lithium fluoride layer 730 a thickness of
In between, as the thickness of the lithium fluoride layer 730 is reduced in the signal transmission direction of the data line 300, the current efficiency of the blue pixel is increased.
In order to conveniently adjust the current efficiency of the first pixel 600, in particular, the thickness of the cathode layer 710 of the first pixel 600 may be
In 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 optionally, 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 other ranges satisfying the effect that the current efficiency of the first pixel 600 increases with the thickness may be also acceptable.
In the display panel 10, the thickness of the cathode layer 710 in the first pixel 600 is
In the signal transmission direction of the data line 300, the cathode layer 710 in the first pixel 600The thickness gradually increases, so that on one hand, the current efficiency of the first pixel 600 can be 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 can be ensured to be gradually increased by increasing the thickness of the cathode layer 710, thereby facilitating the adjustment of the current efficiency of the first pixel 600. At a particular setting, when
When the thickness of the cathode layer 710 is adjusted within this interval, the thickness of the cathode layer 710 in the first pixel 600 may vary along the signal transmission direction of the data line 300
And
of course, the variation range of the thickness of the cathode layer 710 in the first pixel 600 is not limited thereto, and may be
Other thickness intervals within this interval, and the specific interval of the thickness of the cathode layer 710 can be determined according to the actual condition of the display panel 10.
In order to facilitate adjustment of the current efficiency of the first pixel 600, in particular, the cathode protection layer 720 of the first pixel 600 may have a thickness of
Meanwhile, 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 other ranges satisfying the effect that the current efficiency of the first pixel 600 increases with the thickness may be also acceptable.
At the upper partIn 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 is set as
In the meantime, the thickness of the cathode protection layer 720 in the first pixel 600 is gradually increased 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 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, thereby conveniently adjusting the current efficiency of the first pixel 600. At a particular setting, when
When the thickness of the cathode protection layer 720 is adjusted within this interval, the variation range of the thickness 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 variation range of the thickness of the cathode protection layer 720 in the first pixel 600 is not limited thereto, and may be
Other thickness intervals within this interval, and the specific interval of the thickness of the cathode protection layer 720 can be determined according to the actual condition of the display panel 10.
In order to conveniently adjust the current efficiency of the first pixel 600, specifically, the first pixel 600 is a blue pixel, and the thickness of the cathode protection layer 720 of the first pixel 600 may be
At this time, the thickness of the cathode protection layer 720 in the first pixel 600 is gradually decreased along the signal transmission direction of the data line 300, and the thickness of the cathode protection layer 720 in the first pixel 600 is
At this time, the thickness of the cathode protective 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 other ranges satisfying the effect that the current efficiency of the first pixel 600 increases with the thickness may be also acceptable.
In the display panel 10, the first pixel 600 is a blue pixel, and the thickness of the cathode protection layer 720 in the first pixel 600 is
At this time, the thickness of the cathode protection layer 720 in the first pixel 600 is gradually decreased along the signal transmission direction of the data line 300, and the thickness of the cathode protection layer 720 in the first pixel 600 is
In the meantime, the thickness of the cathode protection layer 720 in the first pixel 600 is gradually increased 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 on the other hand, the current efficiency of the blue pixel can be ensured to be gradually increased by adjusting the thickness of the cathode protection layer 720, thereby facilitating the adjustment of the current efficiency of the first pixel 600. At a particular setting, when
When the thickness of the cathode protection layer 720 is adjusted within this interval, the variation range of the thickness 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 in use
When the thickness of the cathode protection layer 720 is adjusted within this interval, the variation range of the thickness of the cathode protection layer 720 in the first pixel 600 along the signal transmission direction of the data line 300 may be
And
of course, the variation range of the thickness of the cathode protection layer 720 in the first pixel 600 is not limited thereto, and may be
The other thickness interval within the two intervals, and the specific interval of the thickness of the cathode protection layer 720 can be determined according to the actual condition of the display panel 10.
In order to conveniently adjust the current efficiency of the first pixel 600, specifically, the thickness of the lithium fluoride layer 730 of the first pixel 600 is
In 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 other ranges satisfying the effect that the current efficiency of the first pixel 600 increases with the thickness may be used.
In the display panel 10, the first pixel 600 is redA color pixel or a green pixel, the thickness of the lithium fluoride layer 730 in the first pixel 600 is
During this process, along the signal transmission direction of the data line 300, the thickness of the lithium fluoride layer 730 in the first pixel 600 is gradually increased, so that on the one hand, along the signal transmission direction of the data line 300, the current efficiency of the first pixel 600 is gradually increased, 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. At a particular setting, when
When the thickness of the lithium fluoride layer 730 is adjusted within this interval, the variation range of the thickness of the lithium fluoride layer 730 in the first pixel 600 along the signal transmission direction of the data line 300 may be
And
of course, the variation range of the thickness 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 the specific interval of the thickness of the lithium fluoride layer 730 can be determined according to the actual conditions of the display panel 10.
In order to conveniently adjust the current efficiency of the first pixel 600, specifically, the thickness of the lithium fluoride layer 730 of the first pixel 600 is
The first pixel 600 is a blue pixel, and along the signal transmission direction of the data line 300,the thickness of the lithium fluoride layer 730 in the first pixel 600 is gradually decreased. Of course, the thickness range of the lithium fluoride layer 730 of the first pixel 600 is not limited thereto, and other ranges satisfying the effect that the current efficiency of the first pixel 600 increases with the thickness may be used.
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 is
During this process, along the signal transmission direction of the data line 300, the thickness of the lithium fluoride layer 730 in the first pixel 600 is gradually reduced, so that on the one hand, along the signal transmission direction of the data line 300, the current efficiency of the first pixel 600 is gradually increased, and on the other hand, the current efficiency of the blue pixel is gradually increased by reducing the thickness of the lithium fluoride layer 730, thereby conveniently adjusting the current efficiency of the first pixel 600. At a particular setting, when
When the thickness of the lithium fluoride layer 730 is adjusted within this interval, the variation range of the thickness of the lithium fluoride layer 730 in the first pixel 600 along the signal transmission direction of the data line 300 may be
And
of course, the variation range of the thickness 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 the specific interval of the thickness of the lithium fluoride layer 730 can be determined according to the actual conditions of the display panel 10.
The design of the thickness change of the functional film layer needs to be combined with the specific winding design of the display panel and the variation trend matching among the film layers in the functional film layer, and the uniform effect of the whole display panel is achieved.
In order to improve the problem of display unevenness, in a preferred embodiment, the display area 200 includes a first display area 220 and a second display area 230, the first display area 220 is located on a side of the aperture area 100 away from the signal output end, that is, the first display area 220 is located on a side of the aperture 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 region 200 includes a plurality of pixels, and the pixel density of the first display region 220 is less than the pixel density of the second display region 230. In a specific configuration, 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 aperture region 100 have 6, 4 data lines 300 of the 6 data lines 300 are divided by the aperture region 100, the 6 data lines 300 of the aperture region 100 close to the control module 500 are respectively connected to the 6 rows of first pixels 600, the 4 first data lines 310 of the aperture region 100 far from the control module 500 are connected to the 4 rows of first pixels 600, the pixel density of the first display region 220 is less than that of the second display region 230, and 4 rows of the first pixels 600 are connected by 4 first data lines 310, the 4 first data lines 310 are uniformly arranged, so that the number of the first data lines 310 extending around the aperture area 100 is small, and the dimension b of the winding area 210 around the hole area 100 is made smaller compared with the width a of the winding frame 04 in the prior art, so that the width of the winding area 210 around the hole area 100 is made smaller.
In the display panel 10, the pixel density of the first display area 220 is less than the pixel density of the second display area 230, so that the number of pixels of the first display area 220 is less than the number of pixels of the second display area 230, and thus the number of the first data lines 310 for connecting the pixels of the second display area 230 is less, the number of the first data lines 310 extending around the hole area 100 is less, the number of the windings required in the plurality of data lines 300 is less, and further the number of the metal wires around the hole area 100 is reduced, and the winding area 210 is smaller, so that the arrangement of the metal wires around the hole area 100 is facilitated on one hand, and the RC load is smaller on the other hand, and further the reduction amplitude of the voltage drop current of the first display area 220 with respect to the second display area 230 is smaller, so that the luminance difference between the first display area 220 and the second display area 230 is smaller, and the display uniformity of the whole display area 200 is better, the Mura defect at the edge of the hole region 100 is avoided.
In order to further improve the display uniformity, as shown in fig. 5, 7 and 8, in a preferred embodiment, the ratio of the pixel density of the first display region 220 to the pixel density of the second display region 230 may be 1/4-1/2. 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 range, and may be other values that can achieve 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 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, the number of the windings of the data lines 300 can be reduced, the size of the winding area 210 can be reduced, and the problem of display unevenness caused by the windings of the data lines 300 can be solved; on the other hand, the arrangement of the first pixels 600 at both sides of the aperture region 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 region 220 to the pixel density of the second display region 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 region 220 to the pixel density of the second display region 230 is not limited to the above value, and may be other values within the range of 1/4-1/2. 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 can 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 fig. 5, in a preferred embodiment, the second display region 230 includes a second pixel 800, and 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 that of the second pixel 800. In a specific arrangement, the thickness of at least one functional film layer 700 in the first pixel 600 may be greater than the thickness of the same functional film layer 700 in the second pixel 800, and the thickness of the functional film layer 700 in the first pixel 600 is gradually increased with reference to the thickness of the functional film layer 700 in the second pixel 800, and the current efficiency of the first pixel 600 is greater than that 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 layer 700 in the first pixel 600 may be smaller than the thickness of the same functional film layer 700 in the second pixel 800, and the thickness of the functional film layer 700 in the first pixel 600 is gradually reduced with reference to the thickness of the functional film layer 700 in the second pixel 800, and the current efficiency of the first pixel 600 is greater than that 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 that of the second pixel 800, and further the light-emitting efficiency of the first pixel 600 is greater than that 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 can be made higher than that of the second pixel 800, so as to increase the brightness of the first display area 220, reduce the brightness difference between the first display area 220 and the second display area 230, make the display uniformity of the whole display area better, and avoid the Mura defect at the edge of the hole area 100.
In a specific configuration, the functional film 700 is a cathode layer 710, and the thickness of the cathode layer 710 of the first pixel 600 is
The 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 cathode protection layer 720 of the first pixel 600 has a thickness of
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 lithium fluoride layer 730 of the first pixel 600 has a thickness of
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 cathode protection layer 720 of the first pixel 600 has a thickness of
The cathode protection layer 720 of the second pixel 800 has a thickness greater than that of the first pixel
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 according to any one of the above technical aspects. It is 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, electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, a wearable device, and an internet of things device, and the embodiments disclosed in the present application are not limited thereto.
In the display device, since the thickness of at least one functional film 700 in the first pixel 600 of the display panel 10 along the signal transmission direction of the data line 300 is gradually increased or decreased, 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 at different positions of the display area 200 along the signal transmission direction of the data line 300 is small, the display uniformity of the whole display area 200 is good, and the Mura defect at the edge of the hole area 100 is avoided. Therefore, the display device having the display panel 10 has a good display effect, and the viewing experience of the user is improved.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in the figures may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or at least partially in sequence with other steps or other steps. In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean 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, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A display panel is characterized by comprising an aperture area and a display area surrounding at least part of the aperture 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 partitioned into a first data line and a second data line by the aperture region;
the two ends of the data connecting line are respectively connected with a first data line and a second data line, and the data connecting line is distributed in the winding area;
the first pixel is positioned in the winding area;
wherein, along the signal transmission direction of the data line, the thickness of at least one functional film layer in the first pixel is increased or decreased gradually, so that the current efficiency of the first pixel is increased 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 of
In this case, the thickness of the cathode layer gradually increases 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 protective layer of the first pixel has a thickness of
In the meantime, the thickness of the cathode protective layer is gradually increased along the signal transmission direction of the data line.
5. The display panel according to claim 2, wherein the first pixel is a blue pixel, and the cathode protective layer of the first pixel has a thickness of
When the data line is used, the thickness of the cathode protection layer is gradually reduced along the signal transmission direction of the data line; the cathode protection layer of the first pixel has a thickness of
In the meantime, the thickness of the cathode protective 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 of
In the meantime, the thickness of the lithium fluoride layer is gradually increased along the signal transmission direction of the data line.
7. The display panel according to claim 2, wherein the first pixel is a blue pixel, and the lithium fluoride layer of the first pixel has a thickness of
In the meantime, the thickness of the lithium fluoride layer is gradually reduced along the signal transmission direction of the data line.
8. The display panel according to claim 1, wherein the display region further includes a first display region located on a side of the aperture region remote from the signal output terminal and a second display region excluding the first display region, the display region including a plurality of pixels, and a pixel density of the first display region is smaller than a pixel density of the second display region.
9. The display panel according to claim 8, wherein a ratio of the pixel density of the first display region to the pixel density of the second display region is 1/4-1/2.
10. The display panel according to claim 8, wherein the second display region comprises second pixels, and at least one functional film layer in the first pixels has a thickness greater than or less than a thickness of the same functional film layer in the second pixels, so that the current efficiency of the first pixels is greater than that of the second pixels.
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| WO2022227809A1 (en) * | 2021-04-30 | 2022-11-03 | 荣耀终端有限公司 | Display panel and display device |
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