CN112614877B - Array substrate, display panel and display device - Google Patents
Array substrate, display panel and display device Download PDFInfo
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- CN112614877B CN112614877B CN202011525584.6A CN202011525584A CN112614877B CN 112614877 B CN112614877 B CN 112614877B CN 202011525584 A CN202011525584 A CN 202011525584A CN 112614877 B CN112614877 B CN 112614877B
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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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- 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
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
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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, two adjacent rows of pixel units are arranged in a staggered manner along a second direction, and the first direction and the second direction are crossed; 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 the first pixel electrode at least partially surrounds the second pixel electrode in the same first pixel unit. The invention provides an array substrate, a display panel and a display device, which are convenient for improving the brightness of a pixel unit and reducing the process difficulty.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to an array substrate, a display panel and a display device.
Background
With the development of science and technology and the progress of society, people have increasingly relied on the communication and transmission of information, and display devices are used as main carriers and material bases for information exchange and transmission, and are now hot spots for many scientists to study.
To meet the higher resolution requirements, silicon-based oled microdisplays also employ 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 existing sub-pixels are designed in a strip shape, which is not beneficial to the improvement of the brightness of the main pixels by the subsequent film layers.
Disclosure of Invention
The invention provides an array substrate, a display panel and a display device, which are convenient 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 plurality of pixel units are arranged in a row along a first direction, and two adjacent rows of pixel units are arranged in a staggered manner along a second direction, and the first direction intersects with the second direction;
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 the first pixel electrode at least partially surrounds the second pixel electrode in the same first pixel unit.
In a second aspect, an embodiment of the present invention provides a display panel, including the array substrate described in the second aspect.
In a third aspect, an embodiment of the present invention provides a display device including the display panel according to 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, and the embodiment of the invention adopts the SPR technology, so that the pixel density (namely PPI) of a product can be improved, the number of channels of a driving chip is reduced, the transmittance of the product is improved, and the power consumption is reduced. Further, 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 conveniently improved by the 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 area S1 in FIG. 1;
FIG. 3 is a schematic cross-sectional view along the direction AA' in FIG. 2;
fig. 4 is a schematic top view of another array substrate according to an embodiment of the present disclosure;
fig. 5 is a schematic top view of another array substrate according to an embodiment of the present disclosure;
fig. 6 is a schematic top view of another array substrate according to an embodiment of the present disclosure;
fig. 7 is a schematic top view of another array substrate according to an embodiment of the present disclosure;
fig. 8 is a schematic top view of a display panel according to an embodiment of the invention;
FIG. 9 is a schematic view showing a sectional structure along the BB' direction in FIG. 8;
fig. 10 is a schematic top view of another display panel according to an embodiment of the invention;
FIG. 11 is a schematic top view of another display panel according to an embodiment of the present invention;
fig. 12 is a schematic top view of another display panel according to an embodiment of the invention;
fig. 13 is a schematic cross-sectional view of a display panel according to an embodiment of the present invention;
fig. 14 is a schematic top view of another display panel according to an embodiment of the invention;
FIG. 15 is a schematic view of a cross-sectional structure along the direction CC' in FIG. 14;
fig. 16 is a schematic top view of another display panel according to an embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the 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 structure of an S1 region in fig. 1, fig. 3 is a schematic cross-sectional structure along an AA' direction in fig. 2, and referring to fig. 1-3, the array substrate includes a plurality of pixel units 20. In the first direction, a plurality of pixel units 20 are arranged in a row. Along the second direction, two adjacent rows of pixel units 20 are staggered, and the pixel units 20 in the odd rows are staggered with the pixel units 20 in the even rows. The first direction intersects the second direction, in one embodiment the first direction may be perpendicular to the second direction, 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 positioned at 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. It should be noted that, 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 line, and the second direction may be an extending direction of the data line.
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 embodiment of the present invention adopts the SPR technology, so that the pixel density (i.e., PPI) of the product can be improved, the number of channels of the driving chip can be reduced, the transmittance of the product can be improved, and the power consumption can be reduced. Further, the first pixel electrode 31 forms a ring-shaped 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 differences of the first pixel electrode 31 and the second pixel electrode 32 along the first direction and the second direction are smaller, and the first pixel electrode 31 and the second pixel electrode 32 are kept in the same small area (namely the same pixel unit 20), so that the brightness of the pixel unit is conveniently improved by the subsequent film layer, and the process difficulty is reduced.
Optionally, referring to fig. 2, 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 in the same second pixel unit 22, the third pixel electrode 33 at least partially surrounds the second pixel electrode 32.
Illustratively, referring to fig. 2, the plurality of pixel units 20 includes a first pixel unit 21 and a second pixel unit 22. The first pixel units 21 and the second pixel units 22 are arranged at intervals along the first direction. The arrangement of the pixel units 20 in the same row is as follows: the first pixel unit 21, the second pixel units 22, … …, the first pixel unit 21, the second pixel unit 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.
Illustratively, 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 a ring 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.
Illustratively, 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 surrounded by the first pixel electrode 31 in a ring shape.
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 includes 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.
Illustratively, 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 in 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 arrangement of the pixel units 20 in the same row is as follows: the first pixel unit 21, the second pixel unit 22, the third pixel units 23, … …, the first pixel unit 21, the second pixel unit 22, the third pixel unit 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.
Illustratively, 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, 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 cell 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.
Illustratively, 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 cell 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.
Alternatively, with continued reference to fig. 2, the pixel electrode 30 is symmetrical about a first axis L1, the first axis L1 extending in the first direction. That is, the pixel electrode 30 is axisymmetric about 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 about the second direction. In the embodiment of the present invention, the pixel electrode 30 is symmetrical about the first axis L1, thereby reducing the viewing angle luminance difference in the second direction, and the pixel electrode 30 is symmetrical about the second axis L2, thereby reducing the viewing angle luminance difference in the first direction. In other embodiments, the pixel electrode 30 may also be symmetrical about the first axis L1, but not about the second axis L2; alternatively, the pixel electrode 30 is symmetrical about the second axis L2, but not about the first axis L1.
Illustratively, 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 is rectangular. 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 invention, the outer edges of the first pixel electrode 31 and the second pixel electrode 32 are rectangular, so that the design of the pattern of the pixel electrode 30 is simplified.
Illustratively, the outer edges of the first pixel electrode 31 and the second pixel electrode 32 are square, so that the pixel units 20 have the same light emitting brightness in the first direction and the second direction, thereby improving the display effect. 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, far 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, to reduce the gap between the adjacent pixel units 20 and increase the space utilization, the outer edges of the first and second pixel electrodes 31 and 32 may also have a hexagonal shape or an octagonal shape.
In other embodiments, in order to improve the light extraction efficiency of the pixel unit 20, that is, to improve the light extraction efficiency, a film layer that facilitates light extraction may be formed on the side of the pixel electrode 30 away from the substrate 10, for example, a plurality of microlenses arranged in rows and columns may be formed on the side of the pixel electrode 30 away from the substrate 10. Since the hemispherical microlens has the same extraction efficiency for light within 360 ° of azimuth angle, the brightness gain of the pixel unit 20 is the same at each azimuth angle, so that the hemispherical microlens is a preferred embodiment. At this time, the outer edges of the first pixel electrode 31 and the second pixel electrode 32 may also be rounded correspondingly to adapt to the shape of the microlens.
The third pixel electrode 33 is illustratively rectangular, hexagonal, octagonal, or circular.
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 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 smaller, 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, referring to fig. 7, a first pixel electrode 31 partially surrounds a 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 is formed like a ring, i.e., an opening is provided on the ring. So that the first pixel electrode 31 does not completely enclose the second pixel electrode 32.
Illustratively, 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, and fig. 9 is a schematic cross-sectional view along the BB' direction in fig. 8, and referring to fig. 8 and 9, the display panel includes the array substrate according to the above embodiment. The display panel provided by the embodiment of the invention comprises the array substrate in the embodiment, so that the array substrate in the embodiment has the beneficial effects of being convenient for improving 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 remote 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 overlap with the pixel electrodes 30 in one-to-one correspondence 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-shaped 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 subsequent enhancement of the brightness of the pixel unit 20 by the 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.
Referring to fig. 8 and 9, in an 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, and the red organic light emitting unit R and the blue organic light emitting unit B are located at the edges of the pixel unit 20, with the red organic light emitting unit R or the blue organic light emitting unit B surrounding the green organic light emitting unit G.
Illustratively, 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 being positioned between the pixel electrode 30 and the substrate 10, and a source or drain of the thin film transistors 11 being 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 as follows: electrons and holes are injected into the luminescent material layer from the cathode 50 and the pixel electrode 30 respectively under the action of an external electric field and are combined to generate excitons, the excitons migrate under the action of the external electric field, energy is transferred to luminescent molecules in the luminescent material layer, electrons are excited to transition from a ground state to an excited state, and the excited state energy releases energy in a radiation transition mode, 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, so as to improve the light output efficiency in the light-emitting functional layer.
Fig. 10 is a schematic top view of a display panel according to an embodiment of the invention, 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 surrounded by the first organic light emitting unit 41 in a ring shape.
Illustratively, 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 an edge of the pixel unit 20, and the red organic light emitting unit R and the blue organic light emitting unit B are located at a 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 of 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.
Illustratively, 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, 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.
Illustratively, 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 another panel other than an organic light emitting display panel, for example, a liquid crystal display panel, a quantum dot display panel, or an electrophoretic display panel.
Fig. 13 is a schematic cross-sectional structure 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 resists 60, and the plurality of color resists 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 overlap with the pixel electrodes 30 in one-to-one correspondence in the direction perpendicular to the substrate 10. The plurality of color resists 60 include a first color resist overlapping the first pixel electrode 31 and a second color resist overlapping the second pixel electrode 32 in a direction perpendicular to the substrate 10. In the same first pixel unit 21, the first color resist at least partially surrounds the second color resist. 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 subsequent enhancement of the brightness of the pixel unit 20 by the film layer and reducing the process difficulty.
Optionally, in an embodiment, the plurality of color resists 60 further includes a third color resist overlapping 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.
Illustratively, 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 resist is located at the center of the pixel unit 20, the red color resist and the blue color resist are located at the edges of the pixel unit 20, and the red color resist or the blue color resist surrounds the green color resist.
Alternatively, in another embodiment, in the first pixel unit 21, the first color resist at least partially surrounds the second color resist. 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 surrounded by a first color resistor ring.
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 resist is located at the edge of the pixel unit 20, the red color resist and the blue color resist are located at the edge of the pixel unit 20, and the green color resist surrounds the red color resist or the blue color resist.
Alternatively, 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 resist at least partially surrounds the second color resist. 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 resistor at least partially surrounds the third 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.
Alternatively, in another embodiment, the first color resistor at least partially surrounds the second color resistor in the same first pixel unit 21. In the same second pixel unit 22, the second color resistor at least partially surrounds the third color resistor. 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.
Illustratively, referring to fig. 13, the color resist 60 is located on a side of the organic light emitting unit 40 remote from the substrate 10, and in particular, the color resist 60 may be located on a side of the cathode 50 remote 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 disposed correspondingly. In a direction perpendicular to the substrate 10, the first color resist 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 resist 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 resist 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-transmitting color of the first color resistor is the same as the light-emitting color of the first organic light-emitting unit 41, the light-transmitting color of the second color resistor is the same as the light-emitting color of the second organic light-emitting unit 42, and the light-transmitting color of the third color resistor is the same as the light-emitting color of the third organic light-emitting unit 43. In other embodiments, the first organic light emitting unit 41, the second organic light emitting unit 42, and the third organic light emitting unit 43 may emit white light, and color display may be realized by filtering light rays by 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, and fig. 15 is a schematic cross-sectional view along the direction CC' in fig. 14. Referring to fig. 14 and 15, the display panel further includes a microlens array, which is located 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 the side of the pixel electrode 30 away from the substrate 10, so that the 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 will be appreciated that if the pixel arrangement in the prior art is adopted, the sub-pixels (including the pixel electrodes) are designed to be elongated, so that on one hand, the difference in length 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-lenses. On the other hand, the design of the bottom surface of the microlens into a long strip shape also presents great process difficulties. Therefore, the array substrate and the display panel provided by the embodiment of the invention are convenient for improving the brightness of the pixel unit by the micro lens array.
Alternatively, referring to fig. 14 and 15, the microlenses 70 are circular in a direction perpendicular to the substrate 10. The microlens is hemispherical in shape. Hemispherical microlens 70 is a preferred embodiment because hemispherical microlens 70 has the same extraction efficiency for light within 360 ° of azimuth, and the brightness gain of pixel cell 20 is the same for each azimuth. In other embodiments, the microlenses 70 may also be rectangular, hexagonal, octagonal, or the like in a direction perpendicular to the substrate 10.
Alternatively, referring to fig. 14 and 15, one microlens 70 is provided for each pixel unit 20. In the embodiment of the present invention, one microlens 70 is provided 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 can be reduced, and the thickness of the display panel can be reduced. In other embodiments, each microlens 70 may also cover at least two pixel cells 20, as the invention is not limited in this regard.
Alternatively, referring to fig. 14 and 15, the microlens 70 overlaps the second pixel electrode 32 in a direction perpendicular to the substrate 10, being staggered from the first pixel electrode 31. In the embodiment of the present invention, the micro lens 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, thereby reducing the difficulty of disposing the micro lens 70.
Illustratively, 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 staggered with respect to the first pixel electrode 31, and the microlens 70 is staggered with respect to 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, then: 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 staggered 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, is staggered with the first pixel electrode 31, and the light extraction efficiency of the center of the pixel unit 20 is greater than that of 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 brightness of the first pixel electrode 31 is increased, so that the light emission brightness of the center of the pixel unit 20 is consistent with the light emission brightness of the edge of the pixel unit 20.
Illustratively, 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 the area of the third pixel electrode 33 is larger than the area of the second pixel electrode 32 in the 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, then: the area of the first pixel electrode 31 is larger than the area 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 present invention, the microlens array is disposed at one side of the cover plate 80 adjacent to the plurality of pixel electrodes 30. On the one hand, the cover plate 80 is not arranged between the micro lens array and the pixel electrode 30, the distance between the micro lens array and the pixel electrode 30 is relatively short, and the alignment error between 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 external damage.
Illustratively, referring to fig. 14 and 15, the microlens array is located between the color resist 60 and the cover plate 80. An organic layer may be further disposed between the color resist 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, referring to fig. 16, a microlens 70 is disposed on each pixel unit 20, and the microlens 70 covers all the pixel electrodes 30 in the pixel unit 20. So that the light-emitting luminance at the center of the pixel unit 20 coincides with the light-emitting luminance at the edge of the pixel unit 20.
Illustratively, 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 display panel. Since the display device adopts the display panel, the display device 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 the 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, intelligent glasses and the like.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements, combinations, and substitutions can be made by those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (14)
1. The display panel is characterized by comprising an array substrate and a micro lens array;
the array substrate comprises a plurality of pixel units, wherein the pixel units are arranged in a row along a first direction, and two adjacent rows of pixel units are staggered along a second direction, and the first direction and the second direction are crossed;
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 the first pixel electrode at least partially surrounds the second pixel electrode in the same first pixel unit;
the micro lens array is positioned at one side of the plurality of pixel electrodes far away from the substrate;
the micro-lens array comprises a plurality of micro-lenses which are arranged in rows and columns;
each first pixel unit is provided with one micro lens;
the micro lens is overlapped with the second pixel electrode and staggered with the first pixel electrode in the direction perpendicular to the substrate;
the area of the first pixel electrode is larger than the area of the second pixel electrode in a direction perpendicular to the substrate.
2. The display panel of claim 1, wherein a plurality of the pixel electrodes further comprises a third pixel electrode, and a plurality of the pixel cells further comprises a second pixel cell in which the third pixel electrode at least partially surrounds the second pixel electrode;
each second pixel unit is provided with one micro lens;
the micro lens is overlapped with the second pixel electrode and staggered with the third pixel electrode in the direction perpendicular to the substrate;
the area of the third pixel electrode is larger than the area of the second pixel electrode in a direction perpendicular to the substrate.
3. The display panel of claim 1, wherein a plurality of the pixel electrodes further comprises a third pixel electrode, and a plurality of the pixel cells further comprises a second pixel cell in which the first pixel electrode at least partially surrounds the third pixel electrode;
each second pixel unit is provided with one micro lens;
the micro lens is overlapped with the third pixel electrode and staggered with the first pixel electrode in the direction perpendicular to the substrate;
the area of the first pixel electrode is larger than the area of the third pixel electrode in a direction perpendicular to the substrate.
4. The display panel of claim 1, wherein a plurality of the pixel electrodes further comprises a third pixel electrode, and a plurality of the pixel units further comprises a second pixel unit and a third pixel unit, wherein 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;
wherein each second pixel unit is provided with one micro lens; one of the microlenses is provided for each third pixel unit.
5. The display panel of claim 1, wherein a plurality of the pixel electrodes further comprises a third pixel electrode, and a plurality of the pixel units further comprises a second pixel unit and a third pixel unit, wherein 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;
wherein each second pixel unit is provided with one micro lens; one of the microlenses is provided for each third pixel unit.
6. The display panel according to claim 1, wherein the pixel electrode is symmetrical about a first axis extending in the first direction and/or the pixel electrode is symmetrical about a second axis extending in the second direction.
7. The display panel according to claim 1, wherein an 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 display panel of claim 7, wherein an outer edge of the first pixel electrode has the same shape as an outer edge of the second pixel electrode.
9. The display panel of claim 1, wherein the first pixel electrode partially surrounds the second pixel electrode, and wherein a vertical projection of the first pixel electrode onto the substrate comprises an opening.
10. The display panel according to claim 1, further comprising a plurality of organic light emitting units located 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.
11. The display panel of claim 1, further comprising a plurality of color resistors on a side of the plurality of pixel electrodes away from the substrate;
the plurality of color resistances include a first color resistance overlapping the first pixel electrode and a second color resistance overlapping the second pixel electrode in a direction perpendicular to the substrate; in the same first pixel unit, the first color resistor at least partially surrounds the second color resistor.
12. The display panel of claim 1, wherein the microlenses are rectangular, hexagonal, octagonal, or circular in a direction perpendicular to the substrate.
13. The display panel of claim 1, further comprising a cover plate, wherein the microlens array is positioned between the cover plate and a plurality of the pixel electrodes.
14. A display device comprising the display panel of any one of claims 1-13.
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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 |
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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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