CN107910348B - Display panel and display device - Google Patents
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- CN107910348B CN107910348B CN201711017570.1A CN201711017570A CN107910348B CN 107910348 B CN107910348 B CN 107910348B CN 201711017570 A CN201711017570 A CN 201711017570A CN 107910348 B CN107910348 B CN 107910348B
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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
- H10K59/80—Constructional details
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/871—Self-supporting sealing arrangements
- H10K59/8723—Vertical spacers, e.g. arranged between the sealing arrangement and the OLED
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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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- 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
- H10K59/352—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 invention discloses a display panel and a display device, which belong to the technical field of display and comprise: the pixel unit comprises at least three sub-pixels, namely a first color sub-pixel, a second color sub-pixel and a third color sub-pixel; the sub-pixels include organic light emitting diodes; the connecting line of the center of the first color sub-pixel, the center of the second color sub-pixel and the center of the third color sub-pixel forms a triangle; the display panel further comprises a plurality of supporting columns, and the supporting columns are at least partially arranged in the triangular areas; the length of the support column in the second direction is d 1; in the same pixel unit, the gap between the first color sub-pixel and the second color sub-pixel along the second direction is d2, wherein d1 > d 2. Therefore, the phenomenon of stealing and lighting of the display panel is improved, and the display quality is improved.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
Organic Light Emitting Diodes (OLEDs) are characterized by self-luminescence, fast response, rich colors, wide viewing angle, and capability of being fabricated on flexible substrates, and display devices using the OLEDs are becoming one of the development directions of display technologies.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a display panel provided in the prior art. The display panel shown in fig. 1 is an organic light emitting diode display panel, and includes a substrate 01, and a plurality of pixel units 02 disposed on the substrate 01, where the pixel units 02 include three sub-pixels, respectively a sub-pixel 021, a sub-pixel 022, and a sub-pixel 023. Each sub-pixel comprises an organic light emitting diode.
As is known, an organic light emitting diode includes an anode, an organic light emitting material layer, and a cathode, which are sequentially disposed. When appropriate voltages are applied to the anode and the cathode, respectively, anode holes and cathode electrons are combined in the organic light emitting material layer to generate light. At this time, carriers migrate longitudinally between the anode and the cathode.
In the display panel provided by the prior art, when some pixels display images with low gray scales, for example, 15 gray scales may be referred to as low gray scales, and the voltages of the anode and the cathode of the organic light emitting diode of these pixels are small. At this time, the carriers may laterally diffuse toward the adjacent organic light emitting diodes, causing the corresponding sub-pixels to emit light, which is called "sneak light".
The sub-pixel of the display panel is stolen and brightened, and the display quality is reduced.
Disclosure of Invention
In view of the foregoing, the present invention provides a display panel and a display device.
The present invention provides a display panel, comprising: a plurality of pixel cell groups arranged in a first direction; the pixel unit group comprises a plurality of pixel units arranged along a second direction; the pixel unit comprises at least three sub-pixels, namely a first color sub-pixel, a second color sub-pixel and a third color sub-pixel; the sub-pixels include organic light emitting diodes; the connecting line of the center of the first color sub-pixel, the center of the second color sub-pixel and the center of the third color sub-pixel forms a triangle; in the same pixel unit group, the third color sub-pixels of the multiple pixel units are arranged along the second direction, and the first color sub-pixels and the second color sub-pixels of the multiple pixel units are arranged along the second direction; the display panel further comprises a plurality of supporting columns, and the supporting columns are at least partially arranged in the triangular areas; the length of the support column in the second direction is d 1; in the same pixel unit, the gap between the first color sub-pixel and the second color sub-pixel along the second direction is d2, wherein d1 > d 2.
In some alternative embodiments, along the first direction, the first color sub-pixel at least partially overlaps the support post, and the second color sub-pixel at least partially overlaps the support post.
In some alternative embodiments, in the same pixel unit group, the first color sub-pixels of two adjacent pixel units are adjacently disposed, or the second color sub-pixels of two adjacent pixel units are adjacently disposed.
In some alternative embodiments, the length of the first color sub-pixel along the second direction is dp1, and the length of the second color sub-pixel along the second direction is dp 2; d1 is not less than dp1, and d1 is not less than dp 2.
In some alternative embodiments, the support post has a width w1 along the first direction, and the first color sub-pixel has a width w2 along the first direction; wherein w1 is less than w 2.
In some alternative embodiments, 1/3w2 ≦ w1 ≦ 2/3w 2.
In some alternative embodiments, the triangle is an isosceles triangle; the connecting line of the center of the first color sub-pixel and the center of the second color sub-pixel is the bottom side of an isosceles triangle, the connecting line of the center of the third color sub-pixel and the center of the first color sub-pixel is the first waist of the isosceles triangle, and the connecting line of the center of the third color sub-pixel and the center of the second color sub-pixel is the second waist of the isosceles triangle.
In some alternative embodiments, the midpoint of the first waist is a first midpoint, and the midpoint of the second waist is a second midpoint; the support post covers at least one of the first midpoint and the second midpoint.
In some alternative embodiments, the center of the support post is located on the line connecting the first midpoint and the second midpoint.
In some optional embodiments, the same pixel unit group includes a plurality of pixel unit subgroups, and each pixel unit subgroup includes two adjacent pixel units; in the pixel unit subgroup, the third color sub-pixels of two adjacent pixel units are adjacently arranged.
The invention also provides a display device which comprises the display panel provided by the invention.
Compared with the prior art, the display panel and the display device provided by the invention at least realize the following beneficial effects:
the display panel provided by the invention comprises a plurality of pixel units, wherein each pixel unit comprises at least three sub-pixels, and each sub-pixel comprises an organic light-emitting diode. The three sub-pixels in the pixel unit are arranged in a triangle, namely, the connecting lines of the centers of the first color sub-pixel, the second color sub-pixel and the third color sub-pixel form a triangle. At least part of the supporting columns are arranged in the area where the triangle is located, the length of each supporting column in the second direction is d1, the gap between the first color sub-pixel and the second color sub-pixel in the second direction in the same pixel unit is d2, and d1 is larger than d 2. In the display panel provided by the invention, the support columns have the function of blocking the transverse diffusion of carriers, and at least the first color sub-pixel and the third color sub-pixel can be blocked by the support columns, or at least the second color sub-pixel and the third color sub-pixel can be blocked by the support columns, so that the phenomenon of stealing and lighting of the display panel is improved, and the display quality is improved.
The display device provided by the invention has the beneficial effects of the display panel provided by the invention.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of a display panel provided in the prior art;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of the display panel shown in FIG. 2;
FIG. 4 is a schematic structural diagram of another display panel provided in the embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a pixel unit in a display panel according to another embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a pixel unit in a display panel according to another embodiment of the present invention;
fig. 10 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention. The present embodiment provides a display panel including: a plurality of pixel cell groups 10 arranged in the first direction x; the pixel cell group 10 includes a plurality of pixel cells 20 arranged in the second direction y; the pixel unit 20 includes at least three sub-pixels, which are a first color sub-pixel 21, a second color sub-pixel 22 and a third color sub-pixel 23; the sub-pixels include organic light emitting diodes; the connection line of the center C1 of the first color sub-pixel 21, the center C2 of the second color sub-pixel 22 and the center C3 of the third color sub-pixel 23 forms a triangle 30; in the same pixel unit group 10, the third color sub-pixels 23 of the plurality of pixel units 20 are arranged along the second direction y, and the first color sub-pixels 21 and the second color sub-pixels 22 of the plurality of pixel units 20 are arranged along the second direction y; the display panel further comprises a plurality of support posts 40, the support posts 40 being at least partially disposed in the area of the triangle 30; the support post 40 has a length d1 along the second direction y; in the same pixel unit 20, the gap between the first color sub-pixel 21 and the second color sub-pixel 22 along the second direction y is d2, where d1 > d 2.
In the display panel shown in fig. 2, the sub-pixels include Organic Light Emitting Diodes (OLEDs), and the display panel provided in this embodiment is an Organic Light Emitting Diode (OLED) display panel.
In the display panel provided in this embodiment, in the pixel unit 20, the colors of the three sub-pixels are different from each other. The present embodiment is not particularly limited with respect to the specific colors of the first color sub-pixel 21, the second color sub-pixel 22, and the third color sub-pixel 23. As is known, an organic light emitting diode includes an anode, an organic light emitting material layer, and a cathode, which are sequentially disposed, and the material of the organic light emitting material layer determines the color of a sub-pixel.
In the pixel unit 20, the arrangement of the sub-pixels is a triangular arrangement. That is, a line connecting the center C1 of the first color sub-pixel 21, the center C2 of the second color sub-pixel 22, and the center C3 of the third color sub-pixel 23 forms a triangle 30. It should be noted that the triangle 30 is not a solid structure actually existing in the display panel, but the triangle 30 is drawn in the schematic diagram of fig. 2 for clearly describing the sub-pixel arrangement of the present embodiment.
In this embodiment, a plurality of supporting pillars (PS for short) 40 are provided in the display panel. The support column is a columnar bulge and has a supporting function. Furthermore, the supporting columns 40 are at least partially arranged in the area of the triangle 30, in other words, the supporting columns 40 may be entirely located in the area of the triangle 30 or partially located in the area of the triangle 30.
Next, a film structure of the support post 40 in the display panel will be briefly described. Referring to fig. 3, fig. 3 is a schematic cross-sectional structure diagram of the display panel provided in fig. 2. In fig. 3, the display panel includes a substrate base 00, and a thin film transistor 50 disposed on the substrate base, the thin film transistor 50 including a gate electrode 51, a source electrode 52, a drain electrode 53, and a semiconductor layer 54.
The sub-pixels include organic light emitting diodes including anodes 70, the anodes 70 of each organic light emitting diode being independently disposed with insulation between the anodes 70. The anode 70 is electrically connected to the drain 53 of the thin film transistor 50.
The organic light emitting diode further comprises a hole injection layer 71, a hole transport layer 72, an organic light emitting material layer 73, an electron transport layer 74, an electron injection layer 75 and a cathode 76, wherein the hole injection layer 71, the hole transport layer 72, the electron transport layer 74 and the electron injection layer 75 are all arranged on the whole surface, and optionally, the cathode 76 is also arranged on the whole surface.
The display panel shown in fig. 3 further includes a pixel defining layer 60, and the pixel defining layer 60 is used to determine the position of the organic light emitting material layer 73. Alternatively, the supporting columns 40 are disposed on a surface of the pixel defining layer 60 on a side away from the substrate base 00. Alternatively, the support posts 40 are the same material as the pixel defining layer 60.
In the operation of the display panel shown in fig. 3, when carriers migrate in the organic light emitting diode of the third color sub-pixel 23, the carriers may laterally diffuse through the hole injection layer 71, the hole transport layer 72, the electron transport layer 74, and the electron injection layer 75, but since the support column 40 is included between the third color sub-pixel 23 and the adjacent first color sub-pixel 21, the lengths of the hole injection layer 71, the hole transport layer 72, the electron transport layer 74, and the electron injection layer 75 between the third color sub-pixel 23 and the adjacent first color sub-pixel 21 are increased, so that the carriers are difficult to diffuse to the adjacent first color sub-pixel 21, and the first color sub-pixel 21 is stolen.
In the operation of the display panel provided by the embodiment, due to the existence of at least part of the supporting pillars 40 in the area of the triangle 30, part of the carriers are blocked by the supporting pillars during the vertical migration of the carriers. Therefore, the supporting pillars 40 can block the longitudinal diffusion of carriers between some sub-pixels in the pixel unit 20, thereby improving the phenomenon of stealing-lighting of sub-pixels of the display panel and improving the display quality.
Specifically, referring to fig. 2, the supporting pillars 40 are disposed at a position close to the first color sub-pixel 21, and can at least partially block the longitudinal migration of carriers between the first color sub-pixel 21 and the third color sub-pixel 23, so as to improve the sub-pixel brightness stealing phenomenon of the display panel and improve the display quality.
Alternatively, please refer to fig. 4, where fig. 4 is a schematic structural diagram of another display panel provided in the embodiment of the present invention. Fig. 4 follows the reference numerals of fig. 2, and the description of the same parts is omitted. Fig. 4 is different from fig. 2 in that the supporting pillars 40 are disposed at a position close to the second color sub-pixel 22, and can at least partially block the longitudinal migration of carriers between the second color sub-pixel 22 and the third color sub-pixel 23, so as to improve the sub-pixel brightness stealing phenomenon of the display panel and improve the display quality.
It should be noted that the length of the supporting pillar 40 along the second direction y is not too small, and the length of the supporting pillar 40 is too small, so that the effect of blocking the longitudinal migration of the carriers is poor. The supporting pillar 40 has a length d1 along the second direction y, and in the same pixel unit 20, the gap between the first color sub-pixel 21 and the second color sub-pixel 22 along the second direction y is d2, wherein d1 should be at least greater than d 2.
It should be noted that, in the display panel provided in this embodiment, the number of the supporting columns 40 may be set according to the specific design requirement of the display panel. Alternatively, the supporting columns 40 may be provided in each pixel unit 20, or the supporting columns 40 may be provided in only some of the pixel units 20. The present embodiment is not particularly limited with respect to the specific number of the supporting columns 40.
The display panel provided by the embodiment includes a plurality of pixel units, each pixel unit includes at least three sub-pixels, and each sub-pixel includes an organic light emitting diode. The three sub-pixels in the pixel unit are arranged in a triangle, namely, the connecting lines of the centers of the first color sub-pixel, the second color sub-pixel and the third color sub-pixel form a triangle. At least part of the supporting columns are arranged in the area where the triangle is located, the length of each supporting column in the second direction is d1, the gap between the first color sub-pixel and the second color sub-pixel in the second direction in the same pixel unit is d2, and d1 is larger than d 2. In the display panel provided by this embodiment, the supporting column has an effect of blocking lateral diffusion of carriers, and the supporting column can block at least the first color sub-pixel and the third color sub-pixel, or the supporting column can block at least the lateral diffusion of carriers between the second color sub-pixel and the third color sub-pixel, so that the phenomenon of stealing and lighting of the display panel is improved, and the display quality is improved.
Optionally, in the display panel provided in each embodiment of the present invention, the first color sub-pixel is red, the second color sub-pixel is green, and the third color sub-pixel is blue; or, optionally, the first color sub-pixel is green, the second color sub-pixel is red, and the third color sub-pixel is blue.
In some optional embodiments, please refer to fig. 5, and fig. 5 is a schematic structural diagram of another display panel provided in the embodiments of the present invention. Fig. 5 follows the reference numerals of fig. 2, and the description of the same parts is omitted. Fig. 5 differs from fig. 2 in that, along the first direction x, the first color sub-pixel 21 at least partially overlaps the support post 40, and the second color sub-pixel 22 at least partially overlaps the support post 40.
Specifically, in order to clearly illustrate the technical solution of the present embodiment, fig. 5 illustrates auxiliary lines, which are a broken line L1, a broken line L2, a broken line L3, and a broken line L4. The dashed lines L1, L2, L3, and L4 are all parallel to the first direction x. Where the dashed line L1 passes through the top 41 of the support posts 40, the dashed line L2 passes through the bottom 211 of the first color sub-pixel 21, the dashed line L3 passes through the top 221 of the second color sub-pixel 22, and the dashed line L4 passes through the bottom 42 of the support posts 40.
At least partial overlap of the first color sub-pixel 21 with the support posts 40 along the first direction x means that between the dashed line L1 and the dashed line L2, there is both a part of the first color sub-pixel 21 and a part of the support posts 40. Similarly, along the first direction x, and the second color sub-pixel 22 at least partially overlaps the support post 40, means that between the dotted line L3 and the dotted line L4, there is both a portion of the second color sub-pixel 22 and a portion of the support post 40.
In the display panel provided by this embodiment, because the first color sub-pixel 21 and the supporting column 40 at least partially overlap along the first direction x, the supporting column 40 can at least partially block the longitudinal migration of carriers between the first color sub-pixel 21 and the third color sub-pixel 23, and the supporting column 40 can at least partially block the longitudinal migration of carriers between the second color sub-pixel 22 and the third color sub-pixel 23, so as to further improve the sub-pixel stealing phenomenon of the display panel, and further improve the display quality.
In some optional embodiments, please refer to fig. 6, and fig. 6 is a schematic structural diagram of another display panel provided in the embodiments of the present invention. Fig. 6 follows the reference numerals of fig. 2, and the description of the same parts is omitted. Fig. 6 provides a display panel in which, in the same pixel cell group 10, the first color sub-pixels 21 of two adjacent pixel cells 20 are adjacently disposed, or the second color sub-pixels 22 of two adjacent pixel cells 20 are adjacently disposed.
Specifically, as shown in fig. 6, the pixel unit 201 and the pixel unit 202 are two adjacent pixel units, where the pixel unit 201 includes a second color sub-pixel 22a, the pixel unit 202 includes a second color sub-pixel 22b, and the second color sub-pixel 22a is disposed adjacent to the second color sub-pixel 22 b. Alternatively, the pixel unit 202 and the pixel unit 203 are two adjacent pixel units, the pixel unit 202 includes a first color sub-pixel 21a, the pixel unit 203 includes a first color sub-pixel 21b, and the first color sub-pixel 21a is disposed adjacent to the first color sub-pixel 21 b.
The second color sub-pixel 22a and the second color sub-pixel 22b are disposed adjacently, and the organic light emitting material layer of the second color sub-pixel 22a and the organic light emitting material layer of the second color sub-pixel 22b are connected to form a whole. For example, in the process of manufacturing the display panel, when the organic light emitting material layer of the second color sub-pixel is manufactured, the second color sub-pixel 22a and the second color sub-pixel 22b may use an opening of one mask, in other words, the opening of one mask may simultaneously manufacture the organic light emitting material layers of two adjacent second color sub-pixels. Compared with the technical scheme that the organic light-emitting material layer of the second color sub-pixel is manufactured through the opening of the mask, the opening of the mask can be enlarged, and therefore the manufacturing difficulty of the mask is reduced. Similarly, the first color sub-pixel 21a and the first color sub-pixel 21b are disposed adjacent to each other, and the organic light emitting material layer of the first color sub-pixel 21a and the organic light emitting material layer of the first color sub-pixel 21b are connected to form a whole, so that the opening of the mask can be enlarged, thereby reducing the difficulty in manufacturing the mask.
In some optional embodiments, please refer to fig. 7, and fig. 7 is a schematic structural diagram of another display panel provided in the embodiments of the present invention. Fig. 7 follows the reference numerals of fig. 2, and the description of the same parts is omitted. Fig. 7 provides a display panel in which a plurality of pixel cell subgroups 101 are included in the same pixel cell group 10, and each pixel cell subgroup 101 includes two adjacent pixel cells 20; in the pixel cell subgroup 101, the third color sub-pixels 23 of the adjacent two pixel cells 20 are adjacently disposed.
Specifically, as shown in fig. 7, the pixel unit subgroup 101a includes two adjacent pixel units 20a and 20b, the pixel unit 20a includes a third color sub-pixel 23a, the pixel unit 20b includes a third color sub-pixel 23b, and the third color sub-pixel 23a and the third color sub-pixel 23b are adjacently disposed. The organic light emitting material layers of the third color sub-pixel 23a and the third color sub-pixel 23b are connected to be integrated. For example, in the process of manufacturing the display panel, when the organic light emitting material layer of the third color sub-pixel is manufactured, the opening of one mask may be used for the third color sub-pixel 23a and the third color sub-pixel 23b, in other words, the opening of one mask may simultaneously manufacture the organic light emitting material layers of two adjacent third color sub-pixels. Compared with the technical scheme that the organic light-emitting material layer of the third color sub-pixel is manufactured through the opening of the mask, the opening of the mask can be enlarged, and therefore the manufacturing difficulty of the mask is reduced.
In some optional embodiments, please refer to fig. 8, and fig. 8 is a schematic structural diagram of a pixel unit in another display panel according to an embodiment of the present invention. On the basis of the display panel provided by any embodiment of the present invention, the length of the first color sub-pixel 21 along the second direction y is dp1, and the length of the second color sub-pixel 22 along the second direction y is dp 2; d1 is not less than dp1, and d1 is not less than dp 2. In the display panel provided in the present embodiment, the length of the supporting pillar 40 in the second direction y is d1, d1 is greater than the length of the first color sub-pixel 21 in the second direction y, and d1 is greater than the length of the second color sub-pixel 22 in the second direction y. The lengths of the supporting columns 40 are set to be larger and are respectively larger than the lengths of the first color sub-pixel 21 and the second color sub-pixel 22, so that the longitudinal migration of carriers between partial sub-pixels in the pixel unit 20 can be further blocked, the phenomenon of stealing and lighting of sub-pixels of the display panel is improved, and the display quality is improved.
In some alternative embodiments, please continue to refer to fig. 8, the width of the supporting pillar 40 along the first direction x is w1, and the width of the first color sub-pixel 21 along the first direction x is w 2; wherein w1 is less than w 2. In the display panel provided by this embodiment, the width of the supporting column 40 is not suitable for being too large, which may cause the distance between the first color sub-pixel 21 and the third color sub-pixel 23, or the distance between the second color sub-pixel 22 and the third color sub-pixel 23 to be relatively long, thereby reducing the resolution of the display panel. Optionally, 1/3w2 w1 w 2/3w2, the width of the supporting pillar 40 is not smaller than 1/3w2, and too small a distance between the first color sub-pixel 21 and the third color sub-pixel 23 or between the second color sub-pixel 22 and the third color sub-pixel 23 is smaller, so as to reduce the effect of the supporting pillar 40 in blocking the lateral diffusion of carriers. The width of the supporting pillars 40 is not preferably larger than 2/3w2, and too large may result in a longer distance between the first color sub-pixel 21 and the third color sub-pixel 23, or between the second color sub-pixel 22 and the third color sub-pixel 23, and thus reduce the resolution of the display panel. The display panel provided by the embodiment can effectively block the lateral diffusion of carriers among partial sub-pixels, and can enable the display panel to have higher resolution.
In some alternative embodiments, continuing to refer to fig. 8, triangle 30 is an isosceles triangle; the line connecting the center C1 of the first color sub-pixel 21 and the center C2 of the second color sub-pixel 22 is the base T3 of the isosceles triangle, the line connecting the center C3 of the third color sub-pixel 23 and the center C1 of the first color sub-pixel 21 is the first waist T1 of the isosceles triangle, and the line connecting the center C3 of the third color sub-pixel 23 and the center C2 of the second color sub-pixel 22 is the second waist T2 of the isosceles triangle. In this embodiment, in the pixel unit 20, three sub-pixels are arranged in an isosceles triangle, and optionally, the triangle 30 is an equilateral triangle.
In some alternative embodiments, with continued reference to fig. 8, the midpoint of the first waist T1 is the first midpoint T11, and the midpoint of the second waist T2 is the second midpoint T22; the support post 40 covers at least one of the first midpoint T11 and the second midpoint T22. In fig. 8, a technical solution that the supporting column 40 covers both the first midpoint T11 and the second midpoint T22 is illustrated, and alternatively, referring to fig. 9, the difference between fig. 9 and fig. 8 is that the supporting column 40 may only cover the second midpoint T22. In other alternative implementations, support post 40 may cover only first midpoint T11. In this embodiment, the supporting pillars 40 cover at least one of the first middle points T11 and the second middle points T22, in other words, the supporting pillars 40 are located inside the triangle 30 near the first middle points T11 or the second middle points T22, which can effectively block the lateral diffusion of carriers between the first color sub-pixels 21 and the third color sub-pixels 23, and/or between the second color sub-pixels 22 and the third color sub-pixels 23. And, be favorable to the structure of display panel to arrange, make the arrangement of display panel more pleasing to the eye.
Optionally, with continued reference to fig. 8, the center C4 of the supporting post 40 is located on the connecting line of the first midpoint T11 and the second midpoint T22. In this embodiment, the supporting pillar 40 is located inside the triangle 30, and the center C4 is located on the connection line between the first midpoint T11 and the second midpoint T22, so that the lateral diffusion of carriers between the first color sub-pixel 21 and the third color sub-pixel 23, and/or between the second color sub-pixel 22 and the third color sub-pixel 23 can be effectively blocked. And, be favorable to the structure of display panel to arrange, make the arrangement of display panel more pleasing to the eye.
The invention also provides a display device comprising the display panel provided by any one of the above embodiments of the invention. Referring to fig. 10, fig. 10 is a schematic view of a display device according to an embodiment of the invention. Fig. 10 provides a display device 100 including a display panel 100A according to any of the above embodiments of the present invention. The embodiment of fig. 10 is only an example of a mobile phone, and the display device 100 is described, it is understood that the display device provided in the embodiment of the present invention may be other display devices with a display function, such as a computer, a television, and a vehicle-mounted display device, and the present invention is not limited thereto. The display device provided in the embodiment of the present invention has the beneficial effects of the display panel provided in the embodiment of the present invention, and specific reference may be made to the specific description of the display panel in each of the above embodiments, which is not repeated herein.
As can be seen from the foregoing embodiments, the display panel and the display device provided in the present invention at least achieve the following advantages:
the display panel provided by the invention comprises a plurality of pixel units, wherein each pixel unit comprises at least three sub-pixels, and each sub-pixel comprises an organic light-emitting diode. The three sub-pixels in the pixel unit are arranged in a triangle, namely, the connecting lines of the centers of the first color sub-pixel, the second color sub-pixel and the third color sub-pixel form a triangle. At least part of the supporting columns are arranged in the area where the triangle is located, the length of each supporting column in the second direction is d1, the gap between the first color sub-pixel and the second color sub-pixel in the second direction in the same pixel unit is d2, and d1 is larger than d 2. In the display panel provided by the invention, the support columns have the function of blocking the transverse diffusion of carriers, and at least the first color sub-pixel and the third color sub-pixel can be blocked by the support columns, or at least the second color sub-pixel and the third color sub-pixel can be blocked by the support columns, so that the phenomenon of stealing and lighting of the display panel is improved, and the display quality is improved.
The display device provided by the invention has the beneficial effects of the display panel provided by the invention.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (9)
1. A display panel, comprising:
a plurality of pixel cell groups arranged in a first direction; the pixel unit group comprises a plurality of pixel units arranged along a second direction;
the pixel unit comprises at least three sub-pixels, namely a first color sub-pixel, a second color sub-pixel and a third color sub-pixel; the sub-pixels include organic light emitting diodes;
the connecting line of the center of the first color sub-pixel, the center of the second color sub-pixel and the center of the third color sub-pixel forms a triangle;
in the same pixel unit group, the third color sub-pixels of a plurality of the pixel units are arranged along the second direction, and the first color sub-pixels and the second color sub-pixels of a plurality of the pixel units are arranged along the second direction;
the display panel further comprises a plurality of support columns; in the same pixel unit group, at least part of each supporting column is only arranged in the area of the triangle;
the length of the support column in the second direction is d 1; in the same pixel unit, the gap between the first color sub-pixel and the second color sub-pixel along the second direction is d2, wherein d1 > d 2;
the length of the center of the support pillar and the center of the first color sub-pixel along the second direction is d3, the length of the center of the support pillar and the center of the second color sub-pixel along the second direction is d4, wherein d3 > d 4;
the width of the support column along the first direction is w1, and the width of the first color sub-pixel along the first direction is w 2; wherein 1/3w2 is not less than w1 is not less than 2/3w 2;
the organic light-emitting diode further comprises a substrate base plate and a pixel defining layer, wherein the pixel defining layer is positioned on the substrate base plate, the organic light-emitting diode comprises a hole transport layer, and the supporting column is positioned between the pixel defining layer and the hole transport layer.
2. The display panel according to claim 1,
along the first direction, the first color sub-pixel at least partially overlaps the support post, and the second color sub-pixel at least partially overlaps the support post.
3. The display panel according to claim 1,
in the same pixel unit group, the first color sub-pixels of two adjacent pixel units are adjacently arranged, or the second color sub-pixels of two adjacent pixel units are adjacently arranged.
4. The display panel according to claim 1,
the length of the first color sub-pixel along the second direction is dp1, and the length of the second color sub-pixel along the second direction is dp 2; d1 is not less than dp1, and d1 is not less than dp 2.
5. The display panel according to claim 1,
the triangle is an isosceles triangle;
the connecting line of the center of the first color sub-pixel and the center of the second color sub-pixel is the bottom side of the isosceles triangle, the connecting line of the center of the third color sub-pixel and the center of the first color sub-pixel is the first waist of the isosceles triangle, and the connecting line of the center of the third color sub-pixel and the center of the second color sub-pixel is the second waist of the isosceles triangle.
6. The display panel according to claim 5,
the midpoint of the first waist is a first midpoint, and the midpoint of the second waist is a second midpoint;
the support post covers at least one of the first midpoint and the second midpoint.
7. The display panel according to claim 6,
the center of the support column is located on a connecting line of the first midpoint and the second midpoint.
8. The display panel according to claim 1,
the same pixel unit group comprises a plurality of pixel unit subgroups, and each pixel unit subgroup comprises two adjacent pixel units;
in the pixel unit subgroup, the third color sub-pixels of two adjacent pixel units are adjacently arranged.
9. A display device comprising the display panel according to any one of claims 1 to 8.
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| CN114355678B (en) | 2018-02-09 | 2023-11-03 | 京东方科技集团股份有限公司 | Display substrate and display device |
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Effective date of registration: 20211015 Address after: No.8, liufangyuanheng Road, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430074 Patentee after: WUHAN TIANMA MICRO-ELECTRONICS Co.,Ltd. Patentee after: Wuhan Tianma Microelectronics Co.,Ltd. Shanghai Branch Address before: 201201 room 509, building 1, No. 6111, Longdong Avenue, Pudong New Area, Shanghai Patentee before: SHANGHAI TIANMA AM-OLED Co.,Ltd. |