CN113299713B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN113299713B CN113299713B CN202110558255.XA CN202110558255A CN113299713B CN 113299713 B CN113299713 B CN 113299713B CN 202110558255 A CN202110558255 A CN 202110558255A CN 113299713 B CN113299713 B CN 113299713B
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- 239000000758 substrate Substances 0.000 claims abstract description 63
- 238000000926 separation method Methods 0.000 claims abstract description 50
- 230000001629 suppression Effects 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 20
- 239000012782 phase change material Substances 0.000 claims description 19
- 230000003287 optical effect Effects 0.000 claims description 7
- 230000002401 inhibitory effect Effects 0.000 claims description 6
- 229910010272 inorganic material Inorganic materials 0.000 claims description 6
- 239000011147 inorganic material Substances 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000011368 organic material Substances 0.000 claims description 3
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 claims description 3
- 230000005764 inhibitory process Effects 0.000 claims 3
- 238000004806 packaging method and process Methods 0.000 claims 1
- 239000010408 film Substances 0.000 description 24
- 238000005538 encapsulation Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005525 hole transport Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
-
- 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
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
-
- 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
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
- H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
-
- 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
- H10K59/126—Shielding, e.g. light-blocking means over the TFTs
-
- 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
- H10K59/40—OLEDs integrated with touch screens
-
- 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
- H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The present invention relates to a display panel and a display device. The display panel includes: a substrate base; a light emitting device layer disposed on the substrate base; a color film layer and a color separation suppression layer disposed on a side of the light emitting device layer remote from the substrate, wherein the color film layer and the color separation suppression layer are laminated in a direction perpendicular to the substrate, and wherein the color separation suppression layer is configured to suppress transmission of ambient light from an external environment to the light emitting device layer and the substrate, and to suppress transmission of the ambient light reflected from the light emitting device layer and the substrate to the external environment.
Description
Technical Field
The invention relates to the technical field of display. And more particularly, to a display panel and a display device.
Background
An Organic Light-Emitting Diode (OLED) display panel has advantages of self-luminescence, high efficiency, vivid color, etc., and has been gradually applied to the fields of large-area display, illumination, vehicle-mounted display, etc.
Disclosure of Invention
Embodiments of the present invention provide a display panel capable of suppressing color separation while thinning the display panel.
The display panel includes: a substrate base; a pixel circuit layer disposed on the substrate base plate; a light emitting device layer disposed on the pixel circuit layer; a color film layer and a color separation suppression layer disposed on a side of the light emitting device layer remote from the substrate, wherein the color film layer and the color separation suppression layer are laminated in a direction perpendicular to the substrate, and wherein the color separation suppression layer is configured to suppress transmission of ambient light from an external environment to the light emitting device layer and the substrate, and to suppress transmission of the ambient light reflected from the light emitting device layer and the substrate to the external environment.
In some embodiments, the color separation suppressing layer includes a semi-transparent semi-reflective material layer and an optical phase change material layer stacked on each other in a vertical direction.
In some embodiments, the optical phase change material is configured such that the phase of light transmitted a single time therethrough is changed by an odd multiple of pi/2.
In some embodiments, the color separation suppression layer comprises two layers of semi-transparent semi-reflective material and three layers of optical phase change material, and wherein each of the two layers of semi-transparent semi-reflective material is sandwiched between adjacent two of the three layers of optical phase change material.
In some embodiments, the semi-permeable semi-reflective material comprises a metallic material or an inorganic material; the phase change material comprises an inorganic material or an organic material.
In some embodiments, the semi-permeable semi-reflective material comprises at least one of: sm, al, cr and Ag; the phase change material includes at least one of: znO, a mixture of Alq3 and C60, cuPe, liF.
In some embodiments, the display panel further includes a touch layer on a side of the light emitting device layer remote from the substrate, the touch layer including at least one of the color film layer and the color separation suppression layer.
In some embodiments, the touch layer includes a first insulating layer, a first touch electrode layer, a second insulating layer, a second touch electrode layer, and a third insulating layer sequentially disposed in a direction away from the substrate.
In some embodiments, one of the first insulating layer and the third insulating layer includes the color separation suppression layer.
In some embodiments, the third insulating layer includes a color separation inhibiting layer.
In some embodiments, the first insulating layer includes a color separation suppression layer.
In some embodiments, the third insulating layer comprises a color film layer.
In some embodiments, the display panel further includes a touch layer on a side of the light emitting device layer remote from the substrate, wherein the touch layer and the color film layer and the color separation suppression layer are laminated to each other.
In some embodiments, the color film layer is located on a side of the touch layer remote from the substrate, and the color separation suppression layer is located on a side of the color film layer remote from the substrate.
In some embodiments, the display panel further includes an encapsulation layer disposed on the light emitting device layer, the color film layer and the color separation suppression layer being located between the light emitting device layer and the thin film encapsulation layer in a direction perpendicular to the substrate; and a black matrix disposed in the color film layer.
In some embodiments, the light emitting device layer further comprises a pixel defining layer disposed on the substrate, the pixel defining layer comprising a plurality of openings defining a plurality of sub-pixels, wherein a projection of the black matrix on the substrate overlaps a projection of the pixel defining layer on the substrate.
In some embodiments, the light emitting device layer includes: a first electrode disposed on the substrate base plate and in the opening; a light emitting layer on a side of the first electrode remote from the substrate base plate; and a second electrode on a side of the light emitting layer remote from the substrate base plate.
The embodiment of the invention also provides a display device. The display device includes the display panel as described above.
Drawings
For a clearer description of the technical solutions of embodiments of the present invention, reference will be made to the accompanying drawings of embodiments, which are to be understood as being only related to some embodiments of the present invention, and not limiting thereof, wherein:
fig. 1 is a schematic view of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a display panel according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a display panel according to an embodiment of the invention;
FIG. 4 is a schematic diagram of a display panel according to an embodiment of the invention;
FIG. 5 is a schematic diagram of a display panel according to an embodiment of the invention;
FIG. 6 is a schematic view of a color separation inhibiting layer according to the present invention;
fig. 7 is a schematic view of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without creative efforts, based on the described embodiments of the present invention also fall within the protection scope of the present invention.
When introducing elements of the present invention and the embodiments thereof, the articles "a," "an," "the," and "said" are intended to mean that there are one or more of the elements. The terms "comprising," "including," "containing," and "having" are intended to be inclusive and mean that there may be additional elements other than the listed elements.
For the purposes of the following surface description, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom" and derivatives thereof shall relate to the invention as it is oriented in the drawing figures. The terms "overlying," "atop … …," "positioned atop … …," or "positioned atop … …" mean that a first element, such as a first structure, is present on a second element, such as a second structure, wherein intermediate elements, such as interface structures, may be present between the first and second elements. The term "contacting" means connecting a first element, such as a first structure, and a second element, such as a second structure, with or without other elements at the interface of the two elements. The light-emitting side of a display panel (e.g., an OLED display panel) is typically provided with a polarizer to reduce the effect of external ambient light on the display performance of the display panel. However, since the polarizer has a large thickness, it is difficult for the display panel to satisfy the demand for the slimness of the display panel. Therefore, the color film layer can be used for replacing the polaroid to reduce the thickness of the display panel.
However, the color film layer is used to replace the polarizer, but the thickness of the display panel can be effectively reduced, but the inventor finds that the scheme still has some problems. Specifically, since the transmittance of the color film layer is greater than that of the polarizer, more external ambient light is transmitted to the inside of the display panel than in the case of using the polarizer, and the external ambient light is reflected inside the display panel. The inventors further noted that when the reflected external ambient light exits the display panel, a color separation phenomenon is likely to occur, affecting the display effect of the display panel. In particular, the color separation phenomenon is particularly sensitive to flatness of reflective structures (such as cathode and anode electrodes of an OLED) inside the display panel, increasing difficulty in forming an electrode layer as a reflective structure of ambient light inside the display panel to some extent.
Fig. 1 is a schematic view of a display panel according to an embodiment of the invention. As shown in fig. 1, a display panel according to an embodiment of the present invention includes: a substrate base plate 10, a pixel circuit layer 19 provided on the substrate base plate; a light emitting device layer 11 disposed on the pixel circuit layer 19; the color film layer 12 and the color separation suppression layer 13 provided on the side of the light emitting device layer 11 remote from the substrate 10, wherein the color film layer 12 and the color separation suppression layer 13 are laminated in a direction perpendicular to the substrate 10, and wherein the color separation suppression layer 13 is configured to suppress transmission of ambient light from the external environment to the light emitting device layer 11 and the substrate 10, and to suppress transmission of ambient light reflected from the light emitting device layer 11 and the substrate 10 to the external environment.
With such a configuration, color separation can be suppressed while thinning the display panel. That is, on the one hand, the display panel thickness can be reduced by using a color film layer instead of the polarizing film, and on the other hand, the problem of color separation of ambient light due to high transmittance of the color film is solved by introducing a color separation suppressing layer.
The color separation suppressing layer is introduced by this scheme without introducing a manufacturing step independent of the display panel, and the manufacturing cost is inexpensive. When such a scheme was applied to a flexible display panel, no change in display efficiency was observed after 10000 bending test tests.
Fig. 2 is a schematic view of a display panel according to an embodiment of the invention. As shown in fig. 2, the display panel according to the embodiment of the present invention may further include a touch layer 14 on a side of the light emitting device layer 11 remote from the substrate base plate 10, wherein the touch layer 14 and the color film layer 13 and the color separation suppression layer 12 are laminated to each other.
Fig. 3 is a schematic view of a display panel according to an embodiment of the invention. As shown in fig. 3, the touch layer 14 may further include a first insulating layer 141, a first touch electrode layer 142, a second insulating layer 143, a second touch electrode layer 144, and a third insulating layer 145 sequentially disposed in a direction away from the substrate 10.
The display panel may further include: a black matrix 15 disposed in the color film layer 13; an encapsulation layer 16 disposed over the light emitting device 11; a cover plate 17 located on a side of the display panel furthest from the substrate base plate 10.
In an actual product, the driving circuit layer may include an active layer, a gate electrode, a gate insulating layer, source/drain electrodes, a passivation layer, and a planarization layer disposed on the substrate base plate, which are not described herein.
The light emitting device layer 11 may include a pixel defining layer 18 disposed on the substrate base plate 10. The pixel defining layer 18 may comprise a plurality of openings defining a plurality of sub-pixels, wherein the projection of the black matrix 15 onto the substrate 10 overlaps with the projection of the pixel defining layer 18 onto the substrate 10. The light emitting device layer may further include: a first conductive layer 113 disposed on the substrate base 10 and in the opening; a light emitting layer 112 on a side of the first electrode 142 remote from the substrate base plate 10; a second conductive layer 113 on a side of the light emitting layer 112 remote from the substrate base plate 10.
The light emitting layer 112 may include a hole injection layer, a hole transport layer, an organic light emitting layer, an electron transport layer, an electron injection layer, and the like. The encapsulation layer 16 serves to encapsulate the light emitting device layer 11 to prevent moisture, oxygen, etc. from entering the light emitting device. The encapsulation layer may comprise a thin film encapsulation layer, for example, a stack of an organic encapsulation layer and an inorganic encapsulation layer.
As shown in fig. 3, the color film layer 13 may be located on a side of the touch layer 14 away from the substrate 10. The color separation inhibiting layer 12 may be located on the side of the color film layer 13 facing away from the substrate 10, and the color separation inhibiting layer 12 may also be located on the side of the color film layer 13 facing toward the substrate.
The touch layer 14 may include at least one of the color film layer 13 and the color separation suppression layer 12. For example, one of the first insulating layer 141 and the third insulating layer 145 may include a color separation suppression layer. By doing so, a part of the original insulating layer in the touch layer can be replaced with the color separation suppressing layer, and thus the display panel can be kept slim.
Fig. 4 is a schematic view of a display panel according to an embodiment of the invention. As shown in fig. 4, the third insulating layer 145 may include a color separation suppression layer 12. By such a configuration, the display panel can be kept thin.
Fig. 5 is a schematic view of a display panel according to an embodiment of the invention. As shown in fig. 5, the first insulating layer 141 may include a color separation suppressing layer 12. Further, the third insulating layer 145 may include the color film layer 13. By such a configuration, the display panel can be kept thin.
Fig. 6 is a schematic view of a color separation inhibiting layer according to the present invention. The color separation suppressing layer 12 may include a half-transmissive half-reflective material layer 121 and an optical phase change material layer 122 stacked on each other in the vertical direction.
The semi-transmissive and semi-reflective material layer can reduce the intensity of light transmitted therethrough, thereby enabling to suppress transmission of ambient light from the external environment to the light emitting device layer and the substrate, and to suppress transmission of ambient light reflected from the light emitting device layer and the substrate to the external environment. The semi-transmissive semi-reflective material layer may include a metallic material or an inorganic material. For example, the semi-transmissive semi-reflective material includes at least one of: sm, al, cr and Ag.
The optical phase change material is configured such that the phase of light transmitted from a single pass thereof is changed by an odd multiple of pi/2. As shown in fig. 6, such a configuration makes it possible for each of the light phase change material layers that the phase difference between the light a incident from the light phase change material layer 122 and the light B exiting from the light phase change material layer 122 is an odd multiple of pi, so that the light a incident to the light phase change material layer and the light B exiting therefrom undergo interference cancellation, and also to suppress transmission of ambient light from the external environment to the light emitting device layer and the substrate, and transmission of ambient light reflected from the light emitting device layer and the substrate to the external environment. The phase change material may comprise organic and/or inorganic materials. For example, the phase change material may include at least one of: znO, a mixture of Alq3 and C60, cuPe, liF. The thickness of the phase change material layer may be set according to the wavelength of light to be suppressed.
As shown in fig. 6, the color separation suppressing layer may include two semi-transparent semi-reflective material layers 121 and three light phase changing material layers 122, wherein each of the two semi-transparent semi-reflective material layers 121 is sandwiched between adjacent two of the three light phase changing material layers 122. This can achieve a preferable color separation suppressing effect.
The light emitting device layer 11 and the driving backplate 19 tend to be insufficiently flat, subject to the limitations of the prior art, resulting in light from the external environment being incident on a sub-pixel and then reflected to and exiting from a sub-pixel adjacent to the sub-pixel. Thus, the color separation phenomenon is more likely to occur, and the display panel provided by the embodiment of the invention can also improve the color separation phenomenon caused by such a situation.
Fig. 7 is a schematic view of a display device according to an embodiment of the present invention. As shown in fig. 7, the display device 100 according to an embodiment of the present invention may include a display panel 200. The display panel 200 may be the display panel as described above, for example, may be the display panel as shown in fig. 1 to 6.
A particular embodiment has been described which is presented by way of example only and is not intended to limit the scope of the invention. Indeed, the novel embodiments described herein may be embodied in a variety of other forms; furthermore, various omissions, substitutions, and changes in the form of the embodiments described herein may be made without departing from the spirit of the inventions. The accompanying claims and their equivalents are intended to cover such forms or modifications as would fall within the scope and spirit of the invention.
Claims (10)
1. A display panel, comprising:
a substrate base;
a pixel circuit layer disposed on the substrate base plate;
a light emitting device layer disposed on the pixel circuit layer;
a color film layer and a color separation suppression layer disposed on a side of the light emitting device layer remote from the substrate, wherein the color film layer and the color separation suppression layer are laminated in a direction perpendicular to the substrate, and wherein the color separation suppression layer is configured to suppress transmission of ambient light from an external environment to the light emitting device layer and the substrate, and to suppress transmission of the ambient light reflected from the light emitting device layer and the substrate to the external environment;
a touch layer on a side of the light emitting device layer remote from the substrate base plate, wherein the touch layer includes the color separation suppression layer,
the touch control layer comprises a first insulating layer, a first touch control electrode layer, a second insulating layer, a second touch control electrode layer and a third insulating layer which are sequentially arranged along a direction far away from a substrate, one of the first insulating layer and the third insulating layer comprises the color separation inhibition layer, the projection of the color separation inhibition layer on the substrate covers the projection of the first touch control electrode layer on the substrate, and the projection of the color separation inhibition layer on the substrate also covers the projection of the second touch control electrode layer on the substrate.
2. The display panel according to claim 1, wherein the color separation suppressing layer includes a half-transmissive half-reflective material layer and an optical phase change material layer stacked on each other in a vertical direction.
3. The display panel according to claim 2, wherein the light phase-change material layer is configured such that the phase of light transmitted from it once changes by an odd multiple of pi/2.
4. The display panel according to claim 2, wherein the color separation suppressing layer includes two semi-transparent and semi-reflective material layers and three light phase changing material layers, and wherein each of the two semi-transparent and semi-reflective material layers is sandwiched between adjacent two of the three light phase changing material layers.
5. The display panel of claim 2, the semi-transmissive and semi-reflective material comprising a metallic material or an inorganic material;
the phase change material comprises an inorganic material or an organic material.
6. The display panel of claim 5, the semi-transmissive semi-reflective material comprising at least one of: sm, al, cr and Ag;
the phase change material includes at least one of: znO, a mixture of Alq3 and C60, cuPe, liF.
7. The display panel of claim 1, wherein the third insulating layer comprises the color film layer.
8. The display panel of any one of claims 1-7, further comprising:
the color film layer and the color separation inhibiting layer are positioned between the light-emitting device layer and the packaging layer along the direction perpendicular to the substrate; and
and the black matrix is arranged in the color film layer.
9. The display panel of claim 8, wherein the light emitting device layer further comprises a pixel definition layer disposed on the substrate, the pixel definition layer comprising a plurality of openings defining a plurality of sub-pixels, wherein a projection of the black matrix on the substrate overlaps a projection of the pixel definition layer on the substrate.
10. A display device comprising the display panel according to any one of claims 1-9.
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| CN202110558255.XA CN113299713B (en) | 2021-05-21 | 2021-05-21 | Display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110558255.XA CN113299713B (en) | 2021-05-21 | 2021-05-21 | Display panel and display device |
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| CN113299713A CN113299713A (en) | 2021-08-24 |
| CN113299713B true CN113299713B (en) | 2023-11-03 |
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| CN114864846B (en) * | 2022-05-17 | 2023-06-27 | 武汉华星光电半导体显示技术有限公司 | OLED light-emitting device and terminal equipment |
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| CN112420956A (en) * | 2020-11-18 | 2021-02-26 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof and display device |
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| CN112420956A (en) * | 2020-11-18 | 2021-02-26 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof and display device |
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