CN109509779B - Pixel arrangement, organic light-emitting display panel comprising same and display device - Google Patents
Pixel arrangement, organic light-emitting display panel comprising same and display device Download PDFInfo
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- CN109509779B CN109509779B CN201811503892.1A CN201811503892A CN109509779B CN 109509779 B CN109509779 B CN 109509779B CN 201811503892 A CN201811503892 A CN 201811503892A CN 109509779 B CN109509779 B CN 109509779B
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- 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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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
- H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
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- H—ELECTRICITY
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- 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
- H10K59/352—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
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Abstract
The embodiment of the present application provides a pixel arrangement of a display panel, which includes: repeating units arranged in an array along a first direction and a second direction, the first direction being perpendicular to the second direction; each repeating unit comprises a first sub-pixel column, a second sub-pixel column and a third sub-pixel column which are sequentially arranged along the first direction; the first subpixel column and the third subpixel column each include two first subpixels and two second subpixels arranged in the second direction, and the first subpixels and the second subpixels are alternately arranged in the second direction; the second sub-pixel column includes only one third sub-pixel arranged in the second direction. According to the blue light LED display device and the blue light LED display method, the blue light service life can be prolonged as far as possible through adjustment of pixel arrangement on the premise of not depending on materials and device performance.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to pixel arrangement of an organic light-emitting display panel, the organic light-emitting display panel comprising the pixel arrangement and an organic light-emitting display device comprising the pixel arrangement.
[ background of the invention ]
The lifetime of the Organic Light Emitting Display (OLED) panel is subject to a problem, and consumers complain that the color of the OLED panel is severely deviated after a period of use. The reason is that the blue light emitting material has a short lifetime, and the blue light is more severely attenuated with the use time, and the red light and the green light are less attenuated with the use time, so that the color gradually shifts with the increase of the use time, and the lifetime of the organic light emitting display panel is short. The current method for solving the problem of service life is 1, adopting a blue light material with longer service life; 2. the aperture ratio of the blue sub-pixel is increased. However, on the one hand, the lifetime of commercial blue-light emitting materials that can be mass-produced has not been developed in a breakthrough manner, and new materials are expensive and require a lot of manpower, material resources and time for introduction. On the other hand, due to the conventional pixel arrangement, the aperture of the blue sub-pixel cannot be further increased.
[ summary of the invention ]
In view of the above, embodiments of the present invention provide a pixel arrangement of an organic light emitting display panel to solve the above technical problems.
In one aspect, the present application provides a pixel arrangement of an organic light emitting display panel, comprising: repeating units arranged in an array along a first direction and a second direction, the first direction being perpendicular to the second direction; each repeating unit comprises a first sub-pixel column, a second sub-pixel column and a third sub-pixel column which are sequentially arranged along the first direction; the first subpixel column and the third subpixel column each include two first subpixels and two second subpixels arranged in the second direction, and the first subpixels and the second subpixels are alternately arranged in the second direction; the second sub-pixel column includes only one third sub-pixel arranged in the second direction.
Optionally, along the first direction, the third sub-pixel at least partially overlaps with two first sub-pixels and two second sub-pixels of the first pixel column; and, along the first direction, the third sub-pixel at least partially overlaps with two first sub-pixels and two second sub-pixels of the third pixel column.
Optionally, the organic light emitting display panel includes a pixel defining layer, the pixel defining layer includes opening regions, and each sub-pixel is disposed corresponding to each opening region; in one of the repeating units, the third sub-pixels correspond to the same opening area.
Optionally, the first sub-pixels each independently correspond to an opening region; the second sub-pixels respectively and independently correspond to an opening area;
optionally, a third light emitting material region is correspondingly disposed on the third sub-pixel, and in one of the repeating units, the third light emitting material region covers an opening region of the third sub-pixel.
Optionally, the second sub-pixels are correspondingly provided with second luminescent material regions, in the adjacent repeating units, the adjacent second sub-pixels share one second luminescent material region, and the second luminescent material region covers the opening regions of the adjacent second sub-pixels.
Optionally, the first sub-pixels are correspondingly provided with first light emitting material regions, in the adjacent repeating units, the adjacent first sub-pixels share one first light emitting material region, and the first light emitting material region covers the opening regions of the adjacent first sub-pixels.
Optionally, along the first direction, a first end portion and a second end portion of the organic light emitting display panel;
the edge sub-pixel column is a first sub-pixel column of the repeating unit arranged at the first end or a third sub-pixel column of the repeating unit arranged at the second end; the edge sub-pixel row has no repeating unit adjacent thereto; the first sub-pixel and the second sub-pixel of the edge sub-pixel column are correspondingly provided with a first edge luminescent material area and a second edge luminescent material area; the first edge emitting material region and the first emitting material region have the same shape; the second edge emitting material region and the second emitting material region are the same in shape; a first virtual material area and a second virtual material area are arranged on one side, far away from the display area, of the edge sub-pixel column; the first edge emitting material region covers the opening region of the first sub-pixel and the first dummy material region; the second edge emitting material region covers the opening region of the second sub-pixel and the second dummy material region.
Optionally, each of the repeating units includes four pixels, and each pixel includes a first sub-pixel and a second sub-pixel; four pixels share one third sub-pixel in one of the repeating units.
Optionally, the first sub-pixel is a red sub-pixel, the second sub-pixel is a green sub-pixel, the third sub-pixel is a blue sub-pixel, the area of the third sub-pixel is larger than the area of the first sub-pixel, and the area of the third sub-pixel is larger than the area of the second sub-pixel.
Optionally, along the second direction, the geometric centers of the second sub-pixels are equally spaced.
Optionally, along the first direction, the distance between the geometric centers of the second sub-pixels in the same repeating unit is L1, and the distance between the geometric centers of the adjacent second sub-pixels in the adjacent repeating units is L2; then 0.9 is less than or equal to L1/L2 is less than or equal to 1.2.
Optionally, the third sub-pixel includes four notches, and each notch is disposed corresponding to each pixel; in each pixel, the notch covers the first sub-pixel and the second sub-pixel along the first direction.
Optionally, in each of the pixels, along the second direction, the third sub-pixel at least partially overlaps with the first sub-pixel, and at least partially overlaps with the third sub-pixel and the second sub-pixel.
In another aspect, the present application provides a method of manufacturing a display panel using the pixel arrangement of the organic light emitting display panel as described above.
In another aspect, the present application provides a display device including the display panel.
According to the pixel arrangement of the organic light-emitting display panel, the blue light service life can be prolonged as far as possible through the adjustment of pixel arrangement on the premise of not depending on materials and device performance.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of a pixel arrangement of an organic light emitting display panel according to an embodiment of the present application;
FIG. 2 is a schematic view of an organic light emitting display panel of the embodiment of FIG. 1;
fig. 3 is a schematic cross-sectional view of AA' of the organic light emitting display panel of the embodiment of fig. 1;
fig. 4 is a schematic view of a pixel arrangement of an organic light emitting display panel according to another embodiment of the present application;
fig. 5 is a schematic view of a pixel arrangement of an organic light emitting display panel according to still another embodiment of the present application;
fig. 6 is a schematic view of a mask used for manufacturing an organic light emitting display panel of the present application;
fig. 7 is a schematic view of another mask used to fabricate an organic light emitting display panel of the present application;
fig. 8 is a schematic view of yet another mask for fabricating an organic light emitting display panel of the present application;
fig. 9 is a schematic view of a pixel arrangement of an organic light emitting display panel according to still another embodiment of the present application;
fig. 10 is a schematic view of a pixel arrangement of an organic light emitting display panel according to still another embodiment of the present application;
FIG. 11 is a schematic view of a pixel arrangement of an organic light emitting display panel according to still another embodiment of the present application;
fig. 12 is a schematic view of a display device according to an embodiment of the present application.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe directions in embodiments of the present invention, these directions should not be limited by these terms. These terms are only used to distinguish one direction from another. For example, a first direction may also be referred to as a second direction, and similarly, a second direction may also be referred to as a first direction, without departing from the scope of embodiments of the present invention.
The color of the current organic light emitting display panel may be severely deviated as the use time increases. The reason is that the blue light emitting material has a short lifetime, and the blue light is more severely attenuated with the use time, and the red light and the green light are less attenuated with the use time, so that the color gradually shifts with the increase of the use time, and the lifetime of the organic light emitting display panel is short. The current method for solving the problem of service life is 1, adopting a blue light material with longer service life; 2. the aperture ratio of the blue sub-pixel is increased. On the one hand, the service life of commercial blue light emitting materials which can be produced in batches has not been developed in a breakthrough manner for a while, and the new materials are expensive and the introduction of the materials needs to spend a large amount of manpower, material resources and time cost. On the other hand, due to the conventional pixel arrangement, the aperture of the blue sub-pixel cannot be further increased.
The application provides a novel pixel of being applied to organic light emitting display panel arranges, the aperture opening ratio of the blue sub pixel of expansion that can be further to under the prerequisite that does not rely on blue light organic luminescent material and device, promote organic light emitting display panel's life-span.
Referring to fig. 1 and 5, fig. 1 is a schematic diagram of a pixel arrangement of an organic light emitting display panel according to an embodiment of the present application. Fig. 5 is a schematic view of a pixel arrangement of an organic light emitting display panel according to still another embodiment of the present application;
in one embodiment of the present application, the pixel arrangement of the organic light emitting display panel includes repeating units 40 arrayed in a first direction and a second direction, the first direction being perpendicular to the second direction; the array arrangement refers to matrix arrangement according to a row and column mode. Referring to fig. 5, fig. 5 is a schematic diagram illustrating an arrangement of 4 repeating units 40 in an organic light emitting display panel array. Each of the repeating units 40 is arranged in the same row or the same column.
Each repeating unit 40 includes a first sub-pixel column 31, a second sub-pixel column 32, and a third sub-pixel column 33 arranged in this order along the first direction; the first subpixel column 31 includes two first subpixels 21 and two second subpixels 22 arranged in the second direction, and the first subpixels 21 and the second subpixels 22 are alternately arranged in the second direction. The third subpixel column 33 includes two first subpixels 31 and two second subpixels 32 arranged in the second direction, and the first subpixels 31 and the second subpixels 32 are alternately arranged in the second direction; the second sub-pixel column 32 includes only one third sub-pixel 23 arranged in the second direction. In the pixel arrangement of the organic light emitting display panel of the embodiment, each of the repeating units 40 includes four pixels, each of which includes one first sub-pixel 21 and one second sub-pixel 22, and the four pixels share one third sub-pixel 23. In the prior art rendering pixel arrangement, each pixel only comprises sub-pixels of two colors, and the other color is borrowed from other pixels. For example, the prior art pixel is RG, BR, GB, RG, BR … …, where the RG pixel lacks color B and borrows the luminance of the B pixel from the BR pixel next to it, i.e. the color of the sub-pixels comprised by the pixel is not full, at least lacking one color. Each pixel of the display device comprises sub-pixels with three colors, and compared with the rendering pixel arrangement in the prior art, the display effect is better, and the colors are purer.
Further, the first sub-pixel 21 may be a red sub-pixel, the second sub-pixel 22 may be a green sub-pixel, the third sub-pixel 23 may be a blue sub-pixel, the area of the third sub-pixel is larger than that of the first sub-pixel, and the area of the third sub-pixel is larger than that of the second sub-pixel. That is, the third sub-pixel 23 is blue, and the area of the blue sub-pixel is larger. The luminance is proportional to the current density and the light emitting area. According to the arrangement of the present embodiment, the light emitting area of the present embodiment is increased under the condition that the light emitting luminance is not changed, so that the current density can be reduced. The reduction in current density causes the blue pixel to decay more slowly than it otherwise would, resulting in a longer lifetime. And the larger area of the blue sub-pixel can make the attenuation of the blue sub-pixel closer to that of the red and green sub-pixels, so that the overall brightness is only reduced even if the blue sub-pixel is used for a long time, and the color is not seriously deviated. It should be noted that, in the present application, the third sub-pixel 23 needs to be a blue sub-pixel, but the first sub-pixel 21 and the second sub-pixel 22 may be red or green sub-pixels, but the colors of the first sub-pixel 21 and the second sub-pixel 22 are different. The following embodiments are all described by taking the first sub-pixel 21 as a red sub-pixel, the second sub-pixel 22 as a green sub-pixel, and the third sub-pixel 23 as a blue sub-pixel.
Further, in order to increase the area of the blue sub-pixel, along the first direction, the third sub-pixel 23 at least partially overlaps with the two first sub-pixels 21 and the two second sub-pixels 22 of the first pixel column 31; and, along the first direction, the third sub-pixel 23 at least partially overlaps with the two first sub-pixels 21 and the two second sub-pixels 22 of the third pixel column 33. Since, in this embodiment, one third sub-pixel 23 is shared by four sub-pixels in one repeating unit 40, the third sub-pixel 23 affects the light emitting region in each sub-pixel. Specifically, the third sub-pixel 23 is located in the middle of the entire repeating unit 40, and if the third sub-pixel 23 overlaps only the second sub-pixel 22 in the pixel unit of the upper left corner in the first direction, the position of the light emitting region is biased for the pixel of the upper left corner. Since four pixels share one third sub-pixel, for the lower left corner pixel, the third sub-pixel overlaps the first sub-pixel 21 along the first direction, so that the light emitting area is above for the lower left corner pixel. Similarly, the light emitting area of the pixel at the upper right corner is lower, and the light emitting area of the pixel at the lower right corner is upper. This causes a difference in the deviation of the light emitting regions of the pixels in the odd-numbered rows and the even-numbered rows, which affects the display effect. In the embodiment, the third sub-pixel 23 is at least partially overlapped with the two first sub-pixels 21 and the two second sub-pixels 22 of the first pixel column 31, and the third sub-pixel 23 is at least partially overlapped with the two first sub-pixels 21 and the two second sub-pixels 22 of the third pixel column 33, so that the light emitting regions are biased to the middle, the problem that the light emitting regions in odd rows and even rows are not consistent can be avoided, and the display effect of the display panel is improved.
Referring to fig. 2 and fig. 3, fig. 2 is a schematic view illustrating an organic light emitting display panel according to the embodiment of fig. 1; fig. 3 is a schematic cross-sectional view of AA' of the organic light emitting display panel of the embodiment of fig. 1.
Referring to fig. 3, the display panel of the present application includes a substrate 110, the substrate 110 may be a rigid glass substrate or a flexible polyimide substrate, and an active layer Poly disposed on a surface of the substrate 110, a gate insulating layer 101 disposed on the active layer Poly, a gate metal layer M1 disposed on the gate insulating layer 101, a first interlayer insulating layer 102 disposed on the gate metal layer M1, a capacitor metal layer Mc disposed on the interlayer insulating layer 102, a second interlayer insulating layer 103 disposed on the capacitor metal layer Mc, a data metal layer M2 disposed on the second interlayer insulating layer 103, a planarization layer 104 disposed on the data metal layer M2, a first electrode Re disposed on the planarization layer 104, a pixel defining layer 105 disposed on the first electrode Re, wherein the pixel defining layer 105 includes an opening region in which the light emitting material Ma is disposed, and the second electrode Ca is disposed on the light emitting material Ma and the pixel defining layer 105. The openings of the pixel definition layer 105 define the size of each sub-pixel. In this embodiment, the organic light emitting display panel includes a pixel defining layer 105 including opening regions, and sub-pixels disposed corresponding to the opening regions; the first sub-pixels 21 each independently correspond to one of the opening regions 210; the second sub-pixels 22 each independently correspond to an opening area 220; in one of the repeating units, the third sub-pixels correspond to the same opening area 230. By disposing the third sub-pixels 23 in the same opening area 230, only one pixel driving circuit is required, and the pixel pitch can be increased, making it easier to have a high pixel density (PPI). The service life of the blue light is prolonged, the service life attenuation difference between the blue light and the red light and the green light is reduced, and the service life color cast is improved.
In another embodiment of the present application, please refer to fig. 4, fig. 6, fig. 7 and fig. 8, fig. 4 is a schematic diagram of a pixel arrangement of an organic light emitting display panel according to yet another embodiment of the present application; fig. 6 is a schematic view of a mask used for manufacturing an organic light emitting display panel of the present application; fig. 7 is a schematic view of another mask used to fabricate an organic light emitting display panel of the present application; fig. 8 is a schematic view of yet another mask for fabricating an organic light emitting display panel of the present application;
in one embodiment of the present application, a red organic light emitting material is deposited in the opening region 210 of the pixel defining layer, a green organic light emitting material is deposited in the opening region 220 of the pixel defining layer, and a blue organic light emitting material is deposited in the opening region 230 of the pixel defining layer. Three kinds of mask plates are needed, when the first mask plate is used for evaporating a red organic luminescent material, an opening is only arranged in the area corresponding to the opening area 210, and shielding is arranged in other areas; when the second mask plate is used for evaporating a green organic light-emitting material, the opening is only arranged in the area corresponding to the opening area 220, and the shielding is arranged in other areas; when the second mask plate is used for evaporating a blue organic light-emitting material, the opening is only arranged in the area corresponding to the opening area 230, and the shielding is arranged in other areas; with the development of high pixel density (PPI) organic light emitting display panels, the opening area of the sub-pixel becomes smaller. The mask plate for manufacturing the evaporation material is limited by the manufacturing process limit of the mask plate. In the embodiment, the area of the third sub-pixel 23 is the largest, and the pressure to the mask opening process is the smallest, so that the third sub-pixel 23 is correspondingly provided with the third light-emitting material region 231, and in one repeating unit, the third light-emitting material region 231 covers the opening region 230 of the third sub-pixel. It should be noted that, in the present embodiment, a third light emitting material region is formed by evaporating the third light emitting material onto the surface of the display panel through an opening of the third mask during the evaporation process. The boundaries can be seen by excitation with ultraviolet or other wavelengths of light. The third light emitting material region 231 of the present application can completely cover the opening region 230, and can also prevent the occurrence of vapor deposition dislocation due to misalignment. Specifically, referring to fig. 8, fig. 8 is a mask for vapor deposition of the third sub-pixel 23, wherein the opening region 232 is disposed corresponding to the third light-emitting material region 231, and in the vapor deposition process, the third light-emitting material is vapor deposited to the third light-emitting material region 231 through the opening 232 of the mask and completely covers the opening 230 of the third sub-pixel.
In the product with high PPI, the area of the opening region is relatively small for the first sub-pixel 21 and the second sub-pixel 22, and if the opening size of the mask is equivalent to the area of the opening region 210 and the opening region 220, it is difficult to fabricate the mask by evaporating the light emitting materials of the two colors, therefore, in this embodiment, the second sub-pixel 22 is correspondingly provided with the second light emitting material region 221, in the adjacent repeating unit, the adjacent second sub-pixels 22 share one second light emitting material region 221, and the second light emitting material region 221 covers the opening region 220 of the adjacent second sub-pixel. In this embodiment, the second sub-pixels 22 with the same color in the adjacent repeating units share one mask plate opening in the evaporation process, so that the opening of the mask plate can be more than 2 times of the original opening, which is beneficial to realizing a display panel with high PPI. Specifically, for example, the limit of the opening of the mask is 10 micrometers, and the opening area of the pixel definition layer corresponding to the sub-pixel is also approximately 10 micrometers according to the prior art, but according to this embodiment, the opening area of the pixel definition layer corresponding to the sub-pixel can be 5 micrometers, so that the mask can be used for manufacturing a display panel with a higher PPI. In this embodiment, a second light emitting material region is formed by evaporating a second light emitting material onto the surface of the display panel through an opening of the second mask during an evaporation process. The boundaries can be seen by excitation with ultraviolet or other wavelengths of light. Specifically, referring to fig. 7, fig. 7 is a mask for evaporating the second sub-pixel 22, wherein the opening 222 of the mask is disposed corresponding to the second light-emitting material region 221, and in the evaporation process, the second light-emitting material is evaporated to the second light-emitting material region 221 through the opening 222 of the mask and completely covers the opening regions 220 of two adjacent second sub-pixels in the adjacent repeating unit.
Similarly, the first sub-pixels 21 are correspondingly provided with first light-emitting material regions 211, in the adjacent repeating units, the adjacent first sub-pixels 21 share one first light-emitting material region 211, and the first light-emitting material region 211 covers the opening regions 210 of the adjacent first sub-pixels. In this embodiment, a first light emitting material region is formed by evaporating a first light emitting material onto a surface of a display panel through an opening of a first mask during an evaporation process. The boundaries can be seen by excitation with ultraviolet or other wavelengths of light. Specifically, referring to fig. 6, fig. 6 is a mask for evaporating the first sub-pixel 21, wherein the opening 212 of the mask is disposed corresponding to the first light-emitting material region 211, and in the evaporation process, the first light-emitting material is evaporated to the first light-emitting material region 211 through the opening 212 of the mask and completely covers the opening regions 210 of two adjacent first sub-pixels in the adjacent repeating units.
Furthermore, the repeating units at the left edge and the right edge of the organic light-emitting display panel do not have adjacent repeating units, so that the area of the first light-emitting material area and the area of the second light-emitting material area at the edges are inconsistent with the area of other areas of the display panel when the technical scheme is applied, the size of the openings of the mask plate for vapor deposition is inconsistent, the mask plate manufacturing process is complex, and the yield is reduced. Moreover, the stress of the mask plate is not uniform, the mask plate is difficult to stretch, and the production efficiency is affected.
Referring to fig. 5, fig. 5 is a schematic diagram illustrating a pixel arrangement of an organic light emitting display panel according to another embodiment of the present application; in the present embodiment, in the first direction, the organic light emitting display panel 100 includes a first end portion 101 and a second end portion 102;
the edge sub-pixel column is a first sub-pixel column 31 of the repeating unit disposed at the first end portion 101 or a third sub-pixel column 33 of the repeating unit disposed at the second end portion 102; the edge sub-pixel row has no said repeating unit 40 adjacent thereto;
the first sub-pixel 21 and the second sub-pixel 22 of the edge sub-pixel column are correspondingly provided with a first edge luminescent material area 213 and a second edge luminescent material area 223; the first edge emitting material region 213 and the first emitting material region 211 have the same shape; the second edge emitting material region 223 and the second emitting material region 221 are the same in shape;
a first virtual material area 2130 and a second virtual material area 2230 are arranged on one side, away from the display area, of the edge sub-pixel column; the first edge emitting material region 213 covers the opening region 210 of the first sub-pixel and the first dummy material region 2130; the second edge emitting material region 223 covers the opening region 220 of the second sub-pixel and the second dummy material region 2230. In this embodiment, the first dummy material region and the second dummy material region are arranged such that the shapes of the first edge light-emitting material region 213 and the second edge light-emitting material region 223 corresponding to the first sub-pixel 21 and the second sub-pixel 22 at the edge are the same as those of the first light-emitting material region 211 and the second light-emitting material region 221, respectively, so that the openings of the mask for evaporating the light-emitting material are uniform, and the difficulty in preparing the mask is reduced. Meanwhile, the screen opening difficulty of the mask plate is reduced, and the production efficiency is improved. Further, referring to fig. 6 and 7, fig. 6 is a mask for evaporating the first sub-pixel 21, wherein the openings 212 have the same shape in the edge region and the middle region; fig. 7 is a mask for evaporating the second sub-pixel 22, and the openings 222 have the same shape in the edge region and the middle region.
The human eye is sensitive to green light, which is typically centered on the pixel. The problem of poor display results if the positions of the green sub-pixels in each pixel are not uniform. As shown in fig. 9, fig. 9 is a schematic view of a pixel arrangement of an organic light emitting display panel according to still another embodiment of the present application; the second sub-pixel 22 in this embodiment is a green sub-pixel, and in one repeating unit in this embodiment, the positions of the green sub-pixels in the respective pixels are substantially the same. Occupy a position that is located below the middle of the pixel.
Further, please refer to fig. 10, fig. 10 is a schematic diagram illustrating a pixel arrangement of an organic light emitting display panel according to yet another embodiment of the present application; in the present embodiment, the geometric centers of the second sub-pixels 22 are equally spaced along the second direction. Specifically, referring to fig. 10, in the same repeating unit, the pitch between the second sub-pixels 22 adjacent in the first direction is L3; in the adjacent repeating unit, the pitch between two second sub-pixels 22 adjacent in the first direction is L4, and L3 is equal to L4. The green sub-pixels are uniformly arranged in the column direction, so that the display effect of the organic light-emitting display panel is improved.
Further, with continued reference to FIG. 10,
in the first direction, the distance between the geometric centers of the second sub-pixels 22 in the same repeating unit 40 is L1, and the distance between the geometric centers of the adjacent second sub-pixels 22 in the adjacent repeating units is L2; then 0.9 is less than or equal to L1/L2 is less than or equal to 1.2. Preferably, L1 ═ L2. By the arrangement, the green sub-pixels are uniformly arranged in the row direction, and the display effect of the organic light-emitting display panel is improved.
On the other hand, however, compared to the arrangement of fig. 1, the width of the third sub-pixel 23 along the first direction is compressed, which results in a decrease in the area of the blue sub-pixel and a lifetime that does not meet the requirement of the customer. With the increase in the use time, the blue color tends to be more attenuated than the red and green colors, resulting in a severe color shift. Therefore, referring to fig. 11, fig. 11 is a schematic diagram of a pixel arrangement of an organic light emitting display panel according to still another embodiment of the present application;
in this embodiment, the third sub-pixel 23 includes four notches 235, and each notch 235 is disposed corresponding to each pixel; in each pixel, the notch 235 covers the first sub-pixel 21 and the second sub-pixel 22 along the first direction. This arrangement can increase the area of the blue sub-pixel 23 as much as possible while conforming to the above-described arrangement of the green sub-pixels. The protrusion forming the recess 235 is an increased area of the blue sub-pixel.
Further, in each pixel, along the second direction, the third sub-pixel 23 at least partially overlaps the first sub-pixel 21, and at least partially overlaps the third sub-pixel 23 and the second sub-pixel 22. According to the arrangement mode of the embodiment, on the premise that the positions of the green sub-pixels are consistent in each pixel, the area of the blue sub-pixel is increased, so that the service life of the blue sub-pixel is longer due to the increase of the area and the reduction of the current density. And the service life of the red sub-pixel and the green sub-pixel is close, and no obvious color shift is generated along with the increase of the service time.
The present application also discloses an organic light emitting display panel 100 and an organic light emitting display device. The organic light emitting display panel of the present application employs the pixel arrangement of the above organic light emitting display panel. The organic light emitting display device of the present application may include the organic light emitting display panel as described above. Including but not limited to a cellular phone 1000, a tablet computer, a display of a computer, a display applied to a smart wearable device, a display device applied to a vehicle such as an automobile, etc., as shown in fig. 12. The display device is considered to fall within the scope of protection of the present application as long as the display device includes the display panel included in the display device disclosed in the present application.
According to the pixel arrangement of the organic light-emitting display panel, the blue light service life can be prolonged as far as possible through the adjustment of pixel arrangement on the premise of not depending on materials and device performance.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (13)
1. A pixel arrangement of an organic light emitting display panel, comprising:
repeating units arranged in an array along a first direction and a second direction, the first direction being perpendicular to the second direction;
each repeating unit comprises a first sub-pixel column, a second sub-pixel column and a third sub-pixel column which are sequentially arranged along the first direction;
the first subpixel column and the third subpixel column each include two first subpixels and two second subpixels arranged in the second direction, and the first subpixels and the second subpixels are alternately arranged in the second direction;
the second sub-pixel column includes only one third sub-pixel arranged in the second direction;
along the first direction, the distance between the geometric centers of the second sub-pixels in the same repeating unit is L1, and the distance between the geometric centers of the adjacent second sub-pixels in the adjacent repeating units is L2; then L1/L2 is more than or equal to 0.9 and less than or equal to 1.2;
the third sub-pixel comprises four notches, and each notch is arranged corresponding to each pixel; in each pixel, along the first direction, the notch covers the first sub-pixel and the second sub-pixel; in each of the pixels, along the second direction, the third sub-pixel at least partially overlaps the first sub-pixel and at least partially overlaps the third sub-pixel and the second sub-pixel.
2. Pixel arrangement of an organic light emitting display panel according to claim 1,
along the first direction, the third sub-pixel at least partially overlaps with two first sub-pixels and two second sub-pixels of the first sub-pixel column; and, along the first direction, the third sub-pixel at least partially overlaps with two first sub-pixels and two second sub-pixels of the third sub-pixel column.
3. Pixel arrangement of an organic light emitting display panel according to claim 1,
the organic light-emitting display panel comprises a pixel definition layer, wherein the pixel definition layer comprises opening areas, and each sub-pixel is arranged corresponding to each opening area;
in one of the repeating units, the third sub-pixels correspond to the same opening area.
4. Pixel arrangement of an organic light emitting display panel according to claim 3,
the first sub-pixels respectively and independently correspond to an opening area;
the second sub-pixels each independently correspond to an opening region.
5. Pixel arrangement of an organic light emitting display panel according to claim 3,
the third sub-pixel is correspondingly provided with a third luminescent material area, and in one repeating unit, the third luminescent material area covers the opening area of the third sub-pixel.
6. Pixel arrangement of an organic light emitting display panel according to claim 4,
the second sub-pixels are correspondingly provided with second luminescent material areas, in the adjacent repeating units, the adjacent second sub-pixels share one second luminescent material area, and the second luminescent material area covers the opening area of the adjacent second sub-pixels.
7. Pixel arrangement of the organic light emitting display panel according to claim 6,
the first sub-pixels are correspondingly provided with first light-emitting material areas, in the adjacent repeating units, the adjacent first sub-pixels share one first light-emitting material area, and the first light-emitting material areas cover the opening areas of the adjacent first sub-pixels.
8. Pixel arrangement of an organic light emitting display panel according to claim 7,
along the first direction, a first end portion and a second end portion of the organic light emitting display panel;
the edge sub-pixel column is a first sub-pixel column of the repeating unit arranged at the first end or a third sub-pixel column of the repeating unit arranged at the second end; the edge sub-pixel row has no repeating unit adjacent thereto;
the first sub-pixel and the second sub-pixel of the edge sub-pixel column are correspondingly provided with a first edge luminescent material area and a second edge luminescent material area; the first edge emitting material region and the first emitting material region have the same shape; the second edge emitting material region and the second emitting material region are the same in shape;
a first virtual material area and a second virtual material area are arranged on one side, far away from the display area, of the edge sub-pixel column; the first edge emitting material region covers the opening region of the first sub-pixel and the first dummy material region; the second edge emitting material region covers the opening region of the second sub-pixel and the second dummy material region.
9. Pixel arrangement of an organic light emitting display panel according to claim 1,
each repeating unit comprises four pixels, and each pixel comprises a first sub-pixel and a second sub-pixel; four pixels share one third sub-pixel in one of the repeating units.
10. Pixel arrangement of an organic light emitting display panel according to claim 1,
the first sub-pixel is a red sub-pixel, the second sub-pixel is a green sub-pixel, the third sub-pixel is a blue sub-pixel, the area of the third sub-pixel is larger than that of the first sub-pixel, and the area of the third sub-pixel is larger than that of the second sub-pixel.
11. Pixel arrangement of an organic light emitting display panel according to claim 10,
and the geometric centers of the second sub-pixels are equally spaced along the second direction.
12. An organic light emitting display panel, wherein the organic light emitting display panel employs the pixel arrangement of the organic light emitting display panel according to any one of claims 1 to 11.
13. An organic light-emitting display device comprising the organic light-emitting display panel according to claim 12.
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| CN110828512A (en) * | 2019-10-18 | 2020-02-21 | 京东方科技集团股份有限公司 | Organic electroluminescent display panel |
| CN111146362B (en) * | 2019-12-31 | 2022-12-23 | 武汉天马微电子有限公司 | Display panel and display device |
| CN111584576A (en) * | 2020-05-14 | 2020-08-25 | 深圳市华星光电半导体显示技术有限公司 | Display panel |
| CN111834422A (en) * | 2020-06-17 | 2020-10-27 | 深圳市华星光电半导体显示技术有限公司 | Display panel, preparation method thereof and defect repairing method of display panel |
| CN112436048A (en) * | 2020-12-01 | 2021-03-02 | 京东方科技集团股份有限公司 | Pixel structure, fine metal mask plate, display device and control method |
| CN114660861B (en) * | 2022-02-25 | 2023-10-20 | 上海中航光电子有限公司 | Liquid crystal display device and correction method thereof |
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| CN104766875B (en) * | 2015-03-30 | 2019-12-13 | 昆山工研院新型平板显示技术中心有限公司 | pixel arrangement mode sharing blue light emitting layer and organic electroluminescent device |
| CN106486514B (en) * | 2015-08-31 | 2023-12-01 | 昆山国显光电有限公司 | Pixel structure and OLED display panel |
| CN106449710B (en) * | 2016-10-31 | 2019-05-03 | 昆山工研院新型平板显示技术中心有限公司 | Dot structure and OLED display panel comprising the dot structure |
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Effective date of registration: 20211123 Address after: No.8, liufangyuan Henglu, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: WUHAN TIANMA MICROELECTRONICS Co.,Ltd. Patentee after: Wuhan Tianma Microelectronics Co.,Ltd. Shanghai Branch Address before: Room 509, building 1, No. 6111, Longdong Avenue, Pudong New Area, Shanghai, 201201 Patentee before: SHANGHAI TIANMA AM-OLED Co.,Ltd. |