CN112614877A - Array substrate, display panel and display device - Google Patents
Array substrate, display panel and display device Download PDFInfo
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- CN112614877A CN112614877A CN202011525584.6A CN202011525584A CN112614877A CN 112614877 A CN112614877 A CN 112614877A CN 202011525584 A CN202011525584 A CN 202011525584A CN 112614877 A CN112614877 A CN 112614877A
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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
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
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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
Abstract
The invention provides an array substrate, a display panel and a display device, wherein the array substrate comprises a plurality of pixel units, the pixel units are arranged in a row along a first direction, the pixel units in two adjacent rows are arranged in a staggered manner along a second direction, and the first direction is crossed with the second direction; the pixel structure comprises a substrate and a plurality of pixel electrodes positioned on one side of the substrate; the plurality of pixel electrodes comprise a first pixel electrode and a second pixel electrode, the plurality of pixel units comprise a first pixel unit, and in the same first pixel unit, the first pixel electrode at least partially surrounds the second pixel electrode. The invention provides an array substrate, a display panel and a display device, which are used for improving the brightness of a pixel unit and reducing the process difficulty.
Description
Technical Field
The invention relates to the technical field of display, in particular to an array substrate, a display panel and a display device.
Background
With the development of scientific technology and the progress of society, people increasingly depend on the aspects of information communication and transmission, and display devices as main carriers and material bases for information exchange and transmission become hot spots of research of many scientists.
In order to meet the requirement of higher resolution, the silicon-based oled micro-display screen also adopts the SPR technology. SPR is a Pixel Rendering technique (Sub Pixel Rendering). Each main pixel is composed of two sub-pixels, which are arranged in the order of "red + green", "green + blue", or "blue + red". However, most of the sub-pixels are designed in a stripe shape, which is not favorable for improving the brightness of the main pixel by the subsequent film layer.
Disclosure of Invention
The invention provides an array substrate, a display panel and a display device, which are used for improving the brightness of a pixel unit and reducing the process difficulty.
In a first aspect, an embodiment of the present invention provides an array substrate, including a plurality of pixel units, where the pixel units are arranged in a row along a first direction, and the pixel units in two adjacent rows are staggered along a second direction, and the first direction intersects with the second direction;
the pixel structure comprises a substrate and a plurality of pixel electrodes positioned on one side of the substrate; the plurality of pixel electrodes comprise a first pixel electrode and a second pixel electrode, the plurality of pixel units comprise a first pixel unit, and in the same first pixel unit, the first pixel electrode at least partially surrounds the second pixel electrode.
In a second aspect, an embodiment of the present invention provides a display panel, including the array substrate of the second aspect.
In a third aspect, an embodiment of the present invention provides a display device, including the display panel of the second aspect.
In the embodiment of the invention, the first pixel electrode and the second pixel electrode are positioned in the same first pixel unit, each pixel unit comprises two pixel electrodes, namely each pixel unit comprises two sub-pixels. Furthermore, the first pixel electrode forms a ring-shaped or ring-like structure, the first pixel electrode is located at the periphery of the second pixel electrode, the second pixel electrode is located at the center of the first pixel electrode, and the first pixel electrode at least partially surrounds the second pixel electrode. Compared with the strip-shaped pixel electrodes in the prior art, the length difference between the first pixel electrode and the second pixel electrode along the first direction and the second direction is smaller, and the first pixel electrode and the second pixel electrode are kept in the same small area (namely the same pixel unit), so that the brightness of the pixel unit is improved conveniently by a subsequent film layer, and the process difficulty is reduced.
Drawings
Fig. 1 is a schematic top view of an array substrate according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the region S1 in FIG. 1;
FIG. 3 is a schematic cross-sectional view along AA' of FIG. 2;
fig. 4 is a schematic top view of another array substrate according to an embodiment of the present invention;
fig. 5 is a schematic top view illustrating an array substrate according to another embodiment of the present invention;
fig. 6 is a schematic top view illustrating an array substrate according to another embodiment of the present invention;
fig. 7 is a schematic top view illustrating an array substrate according to another embodiment of the present invention;
fig. 8 is a schematic top view illustrating a display panel according to an embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view taken along the direction BB' in FIG. 8;
fig. 10 is a schematic top view of another display panel according to an embodiment of the present invention;
fig. 11 is a schematic top view illustrating another display panel according to an embodiment of the present invention;
fig. 12 is a schematic top view illustrating another display panel according to an embodiment of the present invention;
fig. 13 is a schematic cross-sectional structural diagram of a display panel according to an embodiment of the present invention;
fig. 14 is a schematic top view illustrating another display panel according to an embodiment of the present invention;
FIG. 15 is a schematic cross-sectional view taken along the direction CC' in FIG. 14;
fig. 16 is a schematic top view of another display panel according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic top view illustrating an array substrate according to an embodiment of the present invention, fig. 2 is an enlarged schematic structure illustrating a region S1 in fig. 1, fig. 3 is a schematic cross-sectional structure along an AA' direction in fig. 2, and referring to fig. 1 to fig. 3, the array substrate includes a plurality of pixel units 20. In the first direction, the plurality of pixel units 20 are arranged in a row. Along the second direction, the pixel units 20 in two adjacent rows are arranged in a staggered manner, and the pixel units 20 in the odd rows are arranged in a staggered manner with the pixel units 20 in the even rows. The first direction crosses the second direction, and in one embodiment, the first direction may be perpendicular to the second direction, and in another embodiment, the first direction may not be perpendicular to the second direction. The array substrate includes a substrate 10 and a plurality of pixel electrodes 30 on one side of the substrate 10. The plurality of pixel electrodes 30 includes a first pixel electrode 31 and a second pixel electrode 32, and the plurality of pixel units 20 includes a first pixel unit 21. In the same first pixel unit 21, the first pixel electrode 31 at least partially surrounds the second pixel electrode 32. The first direction may be an extending direction of the data line, and the second direction may be an extending direction of the gate line; alternatively, the first direction may be an extending direction of the gate lines, and the second direction may be an extending direction of the data lines.
In the embodiment of the present invention, the first pixel electrode 31 and the second pixel electrode 32 are located in the same first pixel unit 21, each pixel unit 20 includes two pixel electrodes 30, that is, each pixel unit 20 includes two sub-pixels, and the SPR technique is adopted in the embodiment of the present invention, so that the pixel density (that is, PPI) of a product can be increased, the number of channels of a driving chip can be reduced, the transmittance of the product can be increased, and the power consumption can be reduced. Further, the first pixel electrode 31 forms a ring or ring-like structure, the first pixel electrode 31 is located at the periphery of the second pixel electrode 32, the second pixel electrode 32 is located at the center of the first pixel electrode 31, and the first pixel electrode 31 at least partially surrounds the second pixel electrode 32. Compared with the strip-shaped pixel electrodes in the prior art, the length difference between the first pixel electrode 31 and the second pixel electrode 32 along the first direction and the second direction is smaller, and the first pixel electrode 31 and the second pixel electrode 32 are kept in the same small area (i.e., the same pixel unit 20), so that the brightness of the pixel unit can be improved conveniently by a subsequent film layer, and the process difficulty can be reduced.
Optionally, referring to fig. 2, the plurality of pixel electrodes 30 further includes a third pixel electrode 33, the plurality of pixel units 20 further includes a second pixel unit 22, and the third pixel electrode 33 at least partially surrounds the second pixel electrode 32 in the same second pixel unit 22.
Exemplarily, referring to fig. 2, the plurality of pixel units 20 includes a first pixel unit 21 and a second pixel unit 22. Along the first direction, the first pixel units 21 and the second pixel units 22 are arranged at intervals one by one. The pixel units 20 in the same row are arranged in the following manner: first pixel cell 21, second pixel cell 22, … …, first pixel cell 21, second pixel cell 22. In the second direction, the pixel units 20 of the odd-numbered rows are repeatedly arranged, and the pixel units 20 of the even-numbered rows are repeatedly arranged.
Exemplarily, referring to fig. 2, the plurality of pixel electrodes 30 includes a first pixel electrode 31, a second pixel electrode 32, and a third pixel electrode 33. In the same first pixel unit 21, the first pixel electrode 31 at least partially surrounds the second pixel electrode 32. In the same second pixel unit 22, the third pixel electrode 33 at least partially surrounds the second pixel electrode 32. The first pixel electrode 31 and the third pixel electrode 33 each surround the second pixel electrode 32 in an annular shape.
Fig. 4 is a schematic top view of another array substrate according to an embodiment of the present invention, and referring to fig. 4, the plurality of pixel electrodes 30 further includes a third pixel electrode 33, and the plurality of pixel units 20 further includes a second pixel unit 22. In the same second pixel unit 22, the first pixel electrode 31 at least partially surrounds the third pixel electrode 33.
Exemplarily, referring to fig. 4, the plurality of pixel electrodes 30 includes a first pixel electrode 31, a second pixel electrode 32, and a third pixel electrode 33. In the same first pixel unit 21, the first pixel electrode 31 at least partially surrounds the second pixel electrode 32. In the same second pixel unit 22, the first pixel electrode 31 at least partially surrounds the third pixel electrode 33. The second pixel electrode 32 and the third pixel electrode 33 are each annularly surrounded by the first pixel electrode 31.
Fig. 5 is a schematic top view of another array substrate according to an embodiment of the present invention, and referring to fig. 5, the plurality of pixel electrodes 30 further include a third pixel electrode 33. The plurality of pixel units 20 further includes a second pixel unit 22 and a third pixel unit 23. In the same second pixel unit 22, the third pixel electrode 33 at least partially surrounds the first pixel electrode 31. In the same third pixel unit 23, the second pixel electrode 32 at least partially surrounds the third pixel electrode 33.
Exemplarily, referring to fig. 5, the plurality of pixel units 20 includes a first pixel unit 21, a second pixel unit 22, and a third pixel unit 23. The first pixel unit 21, the second pixel unit 22, and the third pixel unit 23 are sequentially arranged along the first direction. Along the first direction, the first pixel unit 21 is located between the second pixel unit 22 and the third pixel unit 23, the second pixel unit 22 is located between the first pixel unit 21 and the third pixel unit 23, and the third pixel unit 23 is located between the first pixel unit 21 and the second pixel unit 22. The pixel units 20 in the same row are arranged in the following manner: first pixel cell 21, second pixel cell 22, third pixel cell 23, … …, first pixel cell 21, second pixel cell 22, third pixel cell 23. In the second direction, the pixel units 20 of the odd-numbered rows are repeatedly arranged, and the pixel units 20 of the even-numbered rows are repeatedly arranged.
Exemplarily, referring to fig. 5, the plurality of pixel electrodes 30 includes a first pixel electrode 31, a second pixel electrode 32, and a third pixel electrode 33. In the same first pixel unit 21, the first pixel electrode 31 at least partially surrounds the second pixel electrode 32. In the same second pixel unit 22, the third pixel electrode 33 at least partially surrounds the first pixel electrode 31. In the same third pixel unit 23, the second pixel electrode 32 at least partially surrounds the third pixel electrode 33.
Fig. 6 is a schematic top view of another array substrate according to an embodiment of the present invention, and referring to fig. 6, the plurality of pixel electrodes 30 further includes a third pixel electrode 33, and the plurality of pixel units 20 further includes a second pixel unit 22 and a third pixel unit 23. In the same second pixel unit 22, the second pixel electrode 32 at least partially surrounds the third pixel electrode 33. In the same third pixel unit 23, the third pixel electrode 33 at least partially surrounds the first pixel electrode 31.
Exemplarily, referring to fig. 6, the plurality of pixel electrodes 30 includes a first pixel electrode 31, a second pixel electrode 32, and a third pixel electrode 33. In the same first pixel unit 21, the first pixel electrode 31 at least partially surrounds the second pixel electrode 32. In the same second pixel unit 22, the second pixel electrode 32 at least partially surrounds the third pixel electrode 33. In the same third pixel unit 23, the third pixel electrode 33 at least partially surrounds the first pixel electrode 31.
Optionally, with continued reference to fig. 2, the pixel electrode 30 is symmetric about a first axis L1, the first axis L1 extending in a first direction. That is, the pixel electrode 30 is axisymmetric with respect to the first direction. The pixel electrode 30 is also symmetrical about a second axis L2, the second axis L2 extending in the second direction. That is, the pixel electrode 30 is also axisymmetric with respect to the second direction. In the embodiment of the present invention, the pixel electrodes 30 are symmetrical about the first axis L1 to reduce the viewing angle luminance difference in the second direction, and the pixel electrodes 30 are symmetrical about the second axis L2 to reduce the viewing angle luminance difference in the first direction. In other embodiments, the pixel electrode 30 may also be symmetric about the first axis L1, but not about the second axis L2; alternatively, the pixel electrode 30 is symmetrical about the second axis L2, and is not symmetrical about the first axis L1.
Exemplarily, referring to fig. 2, the first pixel electrode 31 is symmetrical about both the first axis L1 and the second axis L2, the second pixel electrode 32 is symmetrical about both the first axis L1 and the second axis L2, and the third pixel electrode 33 is symmetrical about both the first axis L1 and the second axis L2.
Alternatively, referring to fig. 2, the outer edge of the first pixel electrode 31 has a rectangular shape. The outer edge of the second pixel electrode 32 has a rectangular shape. The outer edge of the first pixel electrode 31 is the edge of the first pixel electrode 31 away from the geometric center thereof, and the outer edge of the second pixel electrode 32 is the edge of the second pixel electrode 32 away from the geometric center thereof. In the embodiment of the present invention, the outer edges of the first pixel electrode 31 and the second pixel electrode 32 are both rectangular, which is favorable for simplifying the pattern design of the pixel electrode 30.
Illustratively, the outer edges of the first pixel electrode 31 and the second pixel electrode 32 are both square, so that the pixel units 20 have the same light-emitting brightness in the first direction and the second direction, and the display effect is improved. The outer edges of the first pixel electrode 31 and the second pixel electrode 32 are square, so that the manufacturing process of the film layer on the side, away from the substrate 10, of the first pixel electrode 31 and the second pixel electrode 32 is simplified, and the process difficulty is reduced.
In other embodiments, in order to reduce the gap between adjacent pixel units 20 and increase the space utilization, the outer edges of the first pixel electrode 31 and the second pixel electrode 32 may also be hexagonal or octagonal.
In other embodiments, in order to improve the light extraction efficiency of the pixel unit 20, i.e. in order to improve the light extraction efficiency, a film layer favorable for light extraction may be formed on the side of the pixel electrode 30 away from the substrate 10, for example, a plurality of micro lenses arranged in rows and columns may be formed on the side of the pixel electrode 30 away from the substrate 10. The hemispherical microlens is a preferred embodiment because the hemispherical microlens has the same extraction efficiency for light rays within 360 ° of the azimuth angle, and the brightness gain of the pixel unit 20 is the same for each azimuth angle. At this time, correspondingly, the outer edges of the first pixel electrode 31 and the second pixel electrode 32 may also be both rounded to fit the shape of the microlens.
Illustratively, the third pixel electrode 33 has a rectangular shape, a hexagonal shape, an octagonal shape, or a circular shape.
Alternatively, referring to fig. 2, the outer edge of the first pixel electrode 31 has the same shape as the outer edge of the second pixel electrode 32. In the embodiment of the present invention, the outer edge of the first pixel electrode 31 and the outer edge of the second pixel electrode 32 have the same shape, and when the first pixel electrode 31 at least partially surrounds the second pixel electrode 32, the gap between the first pixel electrode 31 and the second pixel electrode 32 is relatively small, so that the space utilization rate is increased. In other embodiments, the outer edge of the first pixel electrode 31 and the outer edge of the second pixel electrode 32 may also have different shapes.
Fig. 7 is a schematic top view of another array substrate according to an embodiment of the present invention, and referring to fig. 7, the first pixel electrode 31 partially surrounds the second pixel electrode 32, and a vertical projection of the first pixel electrode 31 on the substrate 10 includes an opening. In the embodiment of the present invention, the first pixel electrode 31 located at the periphery of the second pixel electrode 32 forms a ring-like shape, that is, an opening is provided on the ring shape. So that the first pixel electrode 31 does not completely enclose the second pixel electrode 32.
Exemplarily, referring to fig. 7, in the second pixel unit 22, the third pixel electrode 33 partially surrounds the second pixel electrode 32, and a vertical projection of one third pixel electrode 33 on the substrate 10 includes one opening.
Fig. 8 is a schematic top view of a display panel according to an embodiment of the present invention, fig. 9 is a schematic cross-sectional view along the direction BB' of fig. 8, and referring to fig. 8 and fig. 9, the display panel includes the array substrate in the above embodiments. Since the display panel provided by the embodiment of the invention includes the array substrate in the above embodiment, the display panel has the beneficial effects of facilitating the improvement of the brightness of the pixel unit 20 and reducing the process difficulty of the display panel.
Alternatively, referring to fig. 8 and 9, the display panel further includes a plurality of organic light emitting units 40, and the plurality of organic light emitting units 40 are located at a side of the plurality of pixel electrodes 30 away from the substrate 10. The organic light emitting units 40 are in one-to-one correspondence with the pixel electrodes 30, and the organic light emitting units 40 are in one-to-one correspondence with the pixel electrodes 30 in a direction perpendicular to the substrate 10. The plurality of organic light emitting units 40 includes a first organic light emitting unit 41 and a second organic light emitting unit 42. In a direction perpendicular to the substrate 10, the first organic light emitting unit 41 overlaps the first pixel electrode 31, and the second organic light emitting unit 42 overlaps the second pixel electrode 32. In the same first pixel unit 21, the first organic light emitting unit 41 at least partially surrounds the second organic light emitting unit 42. In the embodiment of the present invention, the first organic light emitting unit 41 forms a ring or ring-like structure, the first organic light emitting unit 41 is located at the periphery of the second organic light emitting unit 42, the second organic light emitting unit 42 is located at the center of the first organic light emitting unit 41, and the first organic light emitting unit 41 at least partially surrounds the second organic light emitting unit 42. Thereby facilitating the improvement of the brightness of the pixel unit 20 by the subsequent film layer and reducing the process difficulty.
Alternatively, referring to fig. 8 and 9, the plurality of organic light emitting units 40 further includes a third organic light emitting unit 43, and the third organic light emitting unit 43 overlaps the third pixel electrode 33 in a direction perpendicular to the substrate 10. In the same second pixel unit 22, the third organic light emitting unit 43 at least partially surrounds the second organic light emitting unit 42.
Exemplarily, referring to fig. 8 and 9, in the embodiment of the present invention, the first organic light emitting unit 41 is a red organic light emitting unit R, the second organic light emitting unit 42 is a green organic light emitting unit G, and the third organic light emitting unit 43 is a blue organic light emitting unit B. The green organic light emitting unit G is located at the center of the pixel unit 20, the red organic light emitting unit R and the blue organic light emitting unit B are located at the edge of the pixel unit 20, and the red organic light emitting unit R or the blue organic light emitting unit B surrounds the green organic light emitting unit G.
Exemplarily, referring to fig. 9, the display panel further includes a plurality of thin film transistors 11 and a cathode 50, the plurality of thin film transistors 11 are located between the pixel electrode 30 and the substrate 10, and a source or a drain of the thin film transistor 11 is electrically connected to the pixel electrode 30. The organic light emitting unit 40 is positioned between the pixel electrode 30 and the cathode 50, and the organic light emitting unit 40 includes a light emitting material layer, and at least one of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer. Light is generated in the luminescent material layer by the following steps: under the action of an external electric field, electrons and holes are injected into the light-emitting material layer from the cathode 50 and the pixel electrode 30 respectively and are combined to generate excitons, the excitons migrate under the action of the external electric field, energy is transferred to light-emitting molecules in the light-emitting material layer, and the excited electrons are transited from a ground state to an excited state, and the energy of the excited state releases energy in a radiation transition manner, so that light is generated. The hole injection layer, the hole transport layer, the electron blocking layer, the hole blocking layer, the electron transport layer and the electron injection layer are auxiliary film layers and are used for improving the light output efficiency in the light-emitting function layer.
Fig. 10 is a schematic top view of a display panel according to an embodiment of the present invention, and referring to fig. 10, in the first pixel unit 21, the first organic light emitting unit 41 at least partially surrounds the second organic light emitting unit 42. In the same second pixel unit 22, the first organic light emitting unit 41 at least partially surrounds the third organic light emitting unit 43. The second organic light emitting unit 42 and the third organic light emitting unit 43 are each annularly surrounded by the first organic light emitting unit 41.
Exemplarily, referring to fig. 10, in the embodiment of the present invention, the first organic light emitting unit 41 is a green organic light emitting unit G, the second organic light emitting unit 42 is a red organic light emitting unit R, and the third organic light emitting unit 43 is a blue organic light emitting unit B. The green organic light emitting unit G is located at the edge of the pixel unit 20, the red organic light emitting unit R and the blue organic light emitting unit B are located at the center of the pixel unit 20, and the green organic light emitting unit G surrounds the red organic light emitting unit R or the blue organic light emitting unit B.
Fig. 11 is a schematic top view illustrating a display panel according to an embodiment of the present invention, and referring to fig. 11, a plurality of organic light emitting units 40 includes a first organic light emitting unit 41, a second organic light emitting unit 42, and a third organic light emitting unit 43. The plurality of pixel units 20 includes a first pixel unit 21, a second pixel unit 22, and a third pixel unit 23. In the same first pixel unit 21, the first organic light emitting unit 41 at least partially surrounds the second organic light emitting unit 42. In the same second pixel unit 22, the third organic light emitting unit 43 at least partially surrounds the first organic light emitting unit 41. In the same third pixel unit 23, the second organic light emitting unit 42 at least partially surrounds the third organic light emitting unit 43.
Exemplarily, referring to fig. 11, in the embodiment of the present invention, the first organic light emitting unit 41 is a green organic light emitting unit G, the second organic light emitting unit 42 is a red organic light emitting unit R, and the third organic light emitting unit 43 is a blue organic light emitting unit B.
Fig. 12 is a schematic top view of a display panel according to an embodiment of the invention, and referring to fig. 12, in the same first pixel unit 21, a first organic light emitting unit 41 at least partially surrounds a second organic light emitting unit 42. In the same second pixel unit 22, the second organic light emitting unit 42 at least partially surrounds the third organic light emitting unit 43. In the same third pixel unit 23, the third organic light emitting unit 43 at least partially surrounds the first organic light emitting unit 41.
Exemplarily, referring to fig. 12, in the embodiment of the present invention, the first organic light emitting unit 41 is a green organic light emitting unit G, the second organic light emitting unit 42 is a red organic light emitting unit R, and the third organic light emitting unit 43 is a blue organic light emitting unit B.
In other embodiments, the display panel may be a panel other than the organic light emitting display panel, for example, a liquid crystal display panel, a quantum dot display panel, an electrophoretic display panel, or the like.
Fig. 13 is a schematic cross-sectional structural diagram of a display panel according to an embodiment of the invention, and referring to fig. 13, the display panel further includes a plurality of color resistors 60, and the plurality of color resistors 60 are located on a side of the plurality of pixel electrodes 30 away from the substrate 10. The color resistors 60 are in one-to-one correspondence with the pixel electrodes 30, and the color resistors 60 are in one-to-one correspondence with the pixel electrodes 30 in a direction perpendicular to the substrate 10. The plurality of color resistors 60 includes a first color resistor overlapping the first pixel electrode 31 and a second color resistor overlapping the second pixel electrode 32 in a direction perpendicular to the substrate 10. In the same first pixel unit 21, the first color resistor at least partially surrounds the second color resistor. In the embodiment of the invention, the first color resistor forms an annular or ring-like structure, the first color resistor is positioned at the periphery of the second color resistor, the second color resistor is positioned at the center of the first color resistor, and the first color resistor at least partially surrounds the second color resistor. Thereby facilitating the improvement of the brightness of the pixel unit 20 by the subsequent film layer and reducing the process difficulty.
Optionally, in an embodiment, the plurality of color resistors 60 further includes a third color resistor, and the third color resistor overlaps the third pixel electrode 33 in a direction perpendicular to the substrate 10. In the same second pixel unit 22, the third color resistor at least partially surrounds the second color resistor.
Exemplarily, in the embodiment of the present invention, the first color resistor is a red color resistor, the second color resistor is a green color resistor, and the third color resistor is a blue color resistor. The green color resistor is located at the center of the pixel unit 20, the red color resistor and the blue color resistor are located at the edge of the pixel unit 20, and the red color resistor or the blue color resistor surrounds the green color resistor.
Optionally, in another embodiment, in the first pixel unit 21, the first color resistance at least partially surrounds the second color resistance. In the same second pixel unit 22, the first color resistor at least partially surrounds the third color resistor. The second color resistor and the third color resistor are both annularly surrounded by the first color resistor.
Illustratively, in the embodiment of the present invention, the first color resistor is a green color resistor, the second color resistor is a red color resistor, and the third color resistor is a blue color resistor. The green color resistor is located at the edge of the pixel unit 20, and the red color resistor and the blue color resistor are located at the edge of the pixel unit 20, and the green color resistor surrounds the red color resistor or the blue color resistor.
Optionally, in another embodiment, the plurality of color resistors 60 includes a first color resistor, a second color resistor, and a third color resistor. The plurality of pixel units 20 includes a first pixel unit 21, a second pixel unit 22, and a third pixel unit 23. In the same first pixel unit 21, the first color resistor at least partially surrounds the second color resistor. In the same second pixel unit 22, the third color resistor at least partially surrounds the first color resistor. In the same third pixel unit 23, the second color resistance at least partially surrounds the third color resistance.
Illustratively, in the embodiment of the present invention, the first color resistor is a green color resistor, the second color resistor is a red color resistor, and the third color resistor is a blue color resistor.
Optionally, in another embodiment, in the same first pixel unit 21, the first color resistance at least partially surrounds the second color resistance. In the same second pixel cell 22, the second color resistance at least partially surrounds the third color resistance. In the same third pixel unit 23, the third color resistor at least partially surrounds the first color resistor.
Illustratively, in the embodiment of the present invention, the first color resistor is a green color resistor, the second color resistor is a red color resistor, and the third color resistor is a blue color resistor.
Exemplarily, referring to fig. 13, the color resistor 60 is located at a side of the organic light emitting unit 40 away from the substrate 10, and particularly, the color resistor 60 may be located at a side of the cathode 50 away from the substrate 10. The organic light emitting unit 40 is located between the pixel electrode 30 and the color resistor 60, and the pixel electrode 30, the organic light emitting unit 40 and the color resistor 60 are correspondingly disposed. In a direction perpendicular to the substrate 10, the first color resistance overlaps the first organic light emitting unit 41, and the first organic light emitting unit 41 overlaps the first pixel electrode 31. In a direction perpendicular to the substrate 10, the second color resistance overlaps the second organic light emitting unit 42, and the second organic light emitting unit 42 overlaps the second pixel electrode 32. In a direction perpendicular to the substrate 10, the third color resistance overlaps the third organic light emitting unit 43, and the third organic light emitting unit 43 overlaps the third pixel electrode 33.
Illustratively, the light transmission color of the first color resist is the same as the light emission color of the first organic light emitting unit 41, the light transmission color of the second color resist is the same as the light emission color of the second organic light emitting unit 42, and the light transmission color of the third color resist is the same as the light emission color of the third organic light emitting unit 43. In other embodiments, it is also possible to make the first organic light emitting unit 41, the second organic light emitting unit 42, and the third organic light emitting unit 43 emit white light, and to implement color display by filtering light through the first color resistor, the second color resistor, and the third color resistor.
Fig. 14 is a schematic top view of another display panel according to an embodiment of the present invention, fig. 15 is a schematic cross-sectional view taken along a direction CC' in fig. 14, and referring to fig. 14 and fig. 15, the display panel further includes a microlens array disposed on a side of the plurality of pixel electrodes 30 away from the substrate 10. The microlens array includes a plurality of microlenses 70 arranged in rows and columns. In the embodiment of the present invention, a plurality of microlenses 70 are further disposed on a side of the pixel electrode 30 away from the substrate 10, so that light emitted from the pixel unit 20 passes through the microlenses 70, and the microlenses 70 increase the light extraction efficiency of the display panel.
It can be understood that, if the pixel arrangement manner in the prior art is adopted, the sub-pixels (including the pixel electrodes) are designed to be strip-shaped, on one hand, the length difference between the pixel electrodes along the first direction and the second direction is relatively large, which is not beneficial to increasing the light extraction efficiency through the micro-lens. On the other hand, the design of the bottom surface of the microlens as a strip shape also has great process difficulty. Therefore, the array substrate and the display panel provided by the embodiment of the invention are convenient for the micro-lens array to improve the brightness of the pixel unit.
Alternatively, referring to fig. 14 and 15, the microlens 70 has a circular shape in a direction perpendicular to the substrate 10. The microlens has a hemispherical shape. The hemispherical microlens 70 is a preferred embodiment because the hemispherical microlens 70 has the same extraction efficiency for light rays within 360 ° of the azimuth angle, and the brightness gain of the pixel unit 20 is the same for each azimuth angle. In other embodiments, the microlenses 70 may also have a rectangular, hexagonal, or octagonal shape, etc., in a direction perpendicular to the substrate 10.
Alternatively, referring to fig. 14 and 15, one microlens 70 is provided per pixel unit 20. In the embodiment of the present invention, one microlens 70 is disposed for each pixel unit 20, thereby improving the light extraction efficiency of all the pixel units 20. Further, each pixel unit 20 is provided with one microlens 70, so that the height of the microlens 70 can be reduced, the manufacturing difficulty of the microlens 70 is reduced, and the thickness of the display panel is reduced. In other embodiments, each microlens 70 may also cover at least two pixel units 20, which is not limited by the present invention.
Alternatively, referring to fig. 14 and 15, the microlens 70 overlaps the second pixel electrode 32, being staggered from the first pixel electrode 31, in a direction perpendicular to the substrate 10. In the embodiment of the present invention, the microlens 70 only overlaps the pixel electrode 30 located in the pixel unit 20, and does not overlap the pixel electrode 30 located at the edge of the pixel unit 20, so as to reduce the difficulty of disposing the microlens 70.
Exemplarily, referring to fig. 14 and 15, in the second pixel unit 22, the third pixel electrode 33 at least partially surrounds the second pixel electrode 32. In a direction perpendicular to the substrate 10, the microlens 70 overlaps the second pixel electrode 32, the microlens 70 is offset from the first pixel electrode 31, and the microlens 70 is offset from the third pixel electrode 33.
In other embodiments, if the first pixel electrode 31 at least partially surrounds the third pixel electrode 33 in the second pixel unit 22, there may be provided: in a direction perpendicular to the substrate 10, the microlens 70 overlaps the second pixel electrode 32, the microlens 70 overlaps the third pixel electrode 33, and the microlens 70 is offset from the first pixel electrode 31.
Alternatively, referring to fig. 14 and 15, the area of the first pixel electrode 31 is larger than the area of the second pixel electrode 32 in a direction perpendicular to the substrate 10. Since the microlens 70 overlaps the second pixel electrode 32 in the direction perpendicular to the substrate 10 and is staggered from the first pixel electrode 31, the light extraction efficiency at the center of the pixel unit 20 is greater than that at the edge of the pixel unit 20, in the embodiment of the present invention, the area of the first pixel electrode 31 is increased, and the light emission luminance of the first pixel electrode 31 is increased, so that the light emission luminance at the center of the pixel unit 20 is consistent with that at the edge of the pixel unit 20.
Exemplarily, referring to fig. 14 and 15, in the second pixel unit 22, the third pixel electrode 33 at least partially surrounds the second pixel electrode 32, and an area of the third pixel electrode 33 is larger than an area of the second pixel electrode 32 in a direction perpendicular to the substrate 10.
In other embodiments, if the first pixel electrode 31 at least partially surrounds the third pixel electrode 33 in the second pixel unit 22, there may be provided: the area of the first pixel electrode 31 is larger than that of the third pixel electrode 33 in a direction perpendicular to the substrate 10.
Alternatively, referring to fig. 14 and 15, the display panel further includes a cover plate 80, and the microlens array is positioned between the cover plate 80 and the plurality of pixel electrodes 30. In the embodiment of the invention, the microlens array is disposed on a side of the cover plate 80 adjacent to the plurality of pixel electrodes 30. On one hand, the cover plate 80 is not arranged between the micro lens array and the pixel electrode 30, and the micro lens array is closer to the pixel electrode 30, so that the alignment error of the micro lens array and the pixel electrode 30 is reduced. On the other hand, the microlens array is disposed inside the cover plate 80, and the cover plate 80 can protect the microlens array from being damaged by the outside.
Illustratively, referring to fig. 14 and 15, a microlens array is positioned between the color resistor 60 and the cover plate 80. An organic layer may be further disposed between the color resists 60 and the microlens array, and an optical adhesive layer may be further disposed between the microlens array and the cover plate 80.
Fig. 16 is a schematic top view of another display panel according to an embodiment of the present invention, and referring to fig. 16, each pixel unit 20 is provided with a microlens 70, and the microlens 70 covers all the pixel electrodes 30 in the pixel unit 20. So that the light emission luminance at the center of the pixel unit 20 coincides with the light emission luminance at the edge of the pixel unit 20.
Exemplarily, referring to fig. 16, in the first pixel unit 21, the microlens 70 covers the first pixel electrode 31 and the second pixel electrode 32. In the second pixel unit 22, the microlens 70 covers the second pixel electrode 32 and the third pixel electrode 33.
The embodiment of the invention also provides a display device, which comprises any one of the display panels. Since the display device adopts the display panel, the display device also has the beneficial effects of the display panel of the embodiment. It should be noted that the display device provided in the embodiment of the present invention may further include other circuits and devices for supporting normal operation of the display device. The display device can be one of a mobile phone, a tablet personal computer, electronic paper and an electronic photo frame, and can also be a near-to-eye display device, such as a virtual reality display device, an augmented reality display device, a helmet display device, smart glasses and the like.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (19)
1. The array substrate is characterized by comprising a plurality of pixel units, wherein the pixel units are arranged in a row along a first direction, the pixel units in two adjacent rows are arranged in a staggered manner along a second direction, and the first direction is crossed with the second direction;
the pixel structure comprises a substrate and a plurality of pixel electrodes positioned on one side of the substrate; the plurality of pixel electrodes comprise a first pixel electrode and a second pixel electrode, the plurality of pixel units comprise a first pixel unit, and in the same first pixel unit, the first pixel electrode at least partially surrounds the second pixel electrode.
2. The array substrate of claim 1, wherein the plurality of pixel electrodes further comprises a third pixel electrode, and the plurality of pixel units further comprises a second pixel unit, and the third pixel electrode at least partially surrounds the second pixel electrode in the same second pixel unit.
3. The array substrate of claim 1, wherein the plurality of pixel electrodes further comprises a third pixel electrode, and the plurality of pixel units further comprises a second pixel unit, wherein the first pixel electrode at least partially surrounds the third pixel electrode in the same second pixel unit.
4. The array substrate of claim 1, wherein the plurality of pixel electrodes further comprises a third pixel electrode, the plurality of pixel units further comprises a second pixel unit and a third pixel unit, and the third pixel electrode at least partially surrounds the first pixel electrode in the same second pixel unit; in the same third pixel unit, the second pixel electrode at least partially surrounds the third pixel electrode.
5. The array substrate of claim 1, wherein the plurality of pixel electrodes further comprises a third pixel electrode, the plurality of pixel units further comprises a second pixel unit and a third pixel unit, and the second pixel electrode at least partially surrounds the third pixel electrode in the same second pixel unit; in the same third pixel unit, the third pixel electrode at least partially surrounds the first pixel electrode.
6. The array substrate of claim 1, wherein the pixel electrode is symmetrical about a first axis extending along the first direction, and/or the pixel electrode is symmetrical about a second axis extending along the second direction.
7. The array substrate of claim 1, wherein the outer edge of the first pixel electrode is rectangular, hexagonal, octagonal or circular;
the outer edge of the second pixel electrode is rectangular, hexagonal, octagonal or circular;
the outer edge of the first pixel electrode is the edge of the first pixel electrode far away from the geometric center of the first pixel electrode, and the outer edge of the second pixel electrode is the edge of the second pixel electrode far away from the geometric center of the second pixel electrode.
8. The array substrate of claim 7, wherein the outer edge of the first pixel electrode and the outer edge of the second pixel electrode have the same shape.
9. The array substrate of claim 1, wherein the first pixel electrode partially surrounds the second pixel electrode, and a vertical projection of the first pixel electrode on the substrate includes an opening.
10. A display panel comprising the array substrate according to any one of claims 1 to 9.
11. The display panel according to claim 10, further comprising a plurality of organic light emitting units on a side of the plurality of pixel electrodes away from the substrate;
the plurality of organic light emitting units include a first organic light emitting unit overlapping the first pixel electrode and a second organic light emitting unit overlapping the second pixel electrode in a direction perpendicular to the substrate; in the same first pixel unit, the first organic light emitting unit at least partially surrounds the second organic light emitting unit.
12. The display panel according to claim 10, further comprising a plurality of color resistors provided on a side of the plurality of pixel electrodes away from the substrate;
the plurality of color resistors comprise a first color resistor and a second color resistor, the first color resistor is overlapped with the first pixel electrode in the direction perpendicular to the substrate, and the second color resistor is overlapped with the second pixel electrode; in the same first pixel unit, the first color resistor at least partially surrounds the second color resistor.
13. The display panel according to claim 10, further comprising a microlens array on a side of the plurality of pixel electrodes away from the substrate;
the micro lens array comprises a plurality of micro lenses arranged in rows and columns.
14. The display panel according to claim 13, wherein the microlenses are rectangular, hexagonal, octagonal, or circular in a direction perpendicular to the substrate.
15. The display panel of claim 13, wherein one of the microlenses is disposed per pixel cell.
16. The display panel according to claim 15, wherein the microlens overlaps the second pixel electrode and is shifted from the first pixel electrode in a direction perpendicular to the substrate.
17. The display panel according to claim 16, wherein an area of the first pixel electrode is larger than an area of the second pixel electrode in a direction perpendicular to the substrate.
18. The display panel of claim 13, further comprising a cover plate, wherein the microlens array is positioned between the cover plate and the plurality of pixel electrodes.
19. A display device characterized by comprising the display panel according to any one of claims 10 to 18.
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| CN106960863A (en) * | 2017-03-15 | 2017-07-18 | 上海天马有机发光显示技术有限公司 | The preparation method of display pixel arrangement, display panel and display panel |
| CN110211996A (en) * | 2019-05-29 | 2019-09-06 | 江苏集萃有机光电技术研究所有限公司 | A kind of dot structure, display panel and display device |
| CN110867476A (en) * | 2019-11-27 | 2020-03-06 | 武汉天马微电子有限公司 | Display panel and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106960863A (en) * | 2017-03-15 | 2017-07-18 | 上海天马有机发光显示技术有限公司 | The preparation method of display pixel arrangement, display panel and display panel |
| CN110211996A (en) * | 2019-05-29 | 2019-09-06 | 江苏集萃有机光电技术研究所有限公司 | A kind of dot structure, display panel and display device |
| CN110867476A (en) * | 2019-11-27 | 2020-03-06 | 武汉天马微电子有限公司 | Display panel and display device |
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