CN107123664B - A kind of display panel and display device - Google Patents
A kind of display panel and display device Download PDFInfo
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- CN107123664B CN107123664B CN201710243677.1A CN201710243677A CN107123664B CN 107123664 B CN107123664 B CN 107123664B CN 201710243677 A CN201710243677 A CN 201710243677A CN 107123664 B CN107123664 B CN 107123664B
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- 239000000463 material Substances 0.000 claims description 9
- 238000004806 packaging method and process Methods 0.000 claims description 9
- 238000005538 encapsulation Methods 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
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Classifications
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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
- H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
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- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses a kind of display panel and display devices, including underlay substrate, multiple luminescence units on underlay substrate are set, each luminescence unit is set away from underlay substrate side and there are the light shield layers of set distance between luminescence unit, and the reflection component being arranged between light shield layer and each luminescence unit；The figure and reflection component of light shield layer are corresponded with each luminescence unit, and light shield layer at least partly covers the orthographic projection of luminescence unit in the orthographic projection of underlay substrate, and covers the orthographic projection of reflection component.Light shield layer above luminescence unit can stop incidence of the external environmental light to luminescence unit, therefore can inhibit the reflection by the reflecting surface in luminescence unit to environment light；And reflection component is set between light shield layer and luminescence unit, the emergent light of luminescence unit can be made finally to be emitted outward by the limited secondary reflection of reflection component.Since the devices such as polaroid are not used, reflection component only reflects the problem of will not causing emergent light colour cast to light.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
The oled (organic Light Emitting diode) display panel has the characteristics of fast response speed, lightness and thinness, and is currently applied to the fields of mobile display devices, television devices and the like. Generally, an OLED display panel includes a plurality of OLED display devices as light emitting units, and each display device is composed of an anode, a cathode, and a light emitting layer disposed therebetween. Since the OLED emits self-luminescence at the present stage, the OLED is different from a liquid crystal display panel, and the OLED display panel does not need to be provided with a polaroid on the light incident side, so that the device can be thinned. However, when the external light is incident into the OLED display panel, since the anode and the cathode are mostly made of metal or material with reflective property, the external light will be reflected back, and the display contrast will be affected when the OLED displays. In order to solve the above problems, a circular polarizer (a combination of a polarizing film layer and a λ/4 phase retardation film layer) is usually disposed on the light emitting side of the OLED, when external light passes through the polarizing film layer first, half of the light cannot pass through the polarizing film layer, and the remaining half of the light passes through the λ/4 phase retardation film layer and is reflected by the anode/cathode, and then is 90 degrees different from the original polarization direction, so that the reflected light cannot exit through the polarizing film layer, thereby solving the problem of ambient light reflection.
However, the circular polarizer can not only prevent external light from reflecting, but also prevent half of the light emitted by the OLED from emitting, so that the brightness of the OLED display panel is reduced by half, and the power consumption is doubled. In addition, the light emitted by the OLED after passing through the circular polarizer may have some color shifts, which affects the display effect.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, which are used for reducing the reflection of external environment light and eliminating the color cast of emergent light.
In a first aspect, an embodiment of the present invention provides a display panel, including:
the light-emitting device comprises a substrate, a plurality of light-emitting units arranged on the substrate, a light-shielding layer arranged on one side of each light-emitting unit, which is far away from the substrate, and a set distance is reserved between each light-emitting unit and the light-shielding layer, and a reflecting component arranged between each light-shielding layer and each light-emitting unit; wherein,
the patterns of the light shielding layer correspond to the light emitting units one by one, and the orthographic projection of the light shielding layer on the substrate at least partially covers the orthographic projection of the light emitting units on the substrate;
the reflecting components correspond to the light emitting units one by one, and the orthographic projection of the light shielding layer on the substrate covers the orthographic projection of the reflecting components on the substrate.
In a possible implementation manner, in the display panel provided in the embodiment of the present invention, an orthographic projection of the light shielding layer on the substrate completely covers an orthographic projection of the light emitting unit on the substrate.
In a possible implementation manner, in the display panel provided in the embodiment of the present invention, the light emitting unit is an organic light emitting unit, and includes a first electrode, a light emitting layer, and a second electrode sequentially disposed on the substrate;
the orthographic projection of the light shielding layer on the substrate completely covers the orthographic projection of the first electrode on the substrate.
In a possible implementation manner, in the display panel provided in the embodiment of the present invention, the reflective component is a reflective layer, the reflective layer is located on a surface of the light-shielding layer facing the substrate, and a reflective surface of the reflective layer is an uneven surface.
In a possible implementation manner, in the display panel provided in the embodiment of the present invention, the reflective component includes a first reflective layer and a second reflective layer;
the first light reflecting layer is positioned on the surface of one side of the light shielding layer facing the substrate; the second light reflecting layer is positioned on the surface of one side of the light emitting unit facing the light shielding layer;
the reflecting surface of the first reflecting layer is a plane, and the reflecting surface of the second reflecting layer is an uneven surface.
In a possible implementation manner, in the display panel provided in the embodiment of the present invention, the light reflecting surface of the light reflecting layer, which is not flat, is a sawtooth structure or a wave structure.
In a possible implementation manner, in the display panel provided in the embodiment of the present invention, the set distance between the light shielding layer and each of the light emitting units is 1 to 3 μm.
In a possible implementation manner, in the display panel provided in the embodiment of the present invention, the display panel further includes: the packaging cover plate is positioned on one side of each light-emitting unit, which is far away from the substrate base plate;
the light shielding layer is positioned on the surface of one side, facing the substrate, of the packaging cover plate.
In a possible implementation manner, in the display panel provided in the embodiment of the present invention, the display panel further includes: an encapsulation film covering each of the organic light emitting units; the packaging film comprises a plurality of layers of organic film layers and inorganic film layers which are alternately arranged;
the shading layer is located at the position of the organic film layer and/or the inorganic film layer.
In a possible implementation manner, in the display panel provided in the embodiment of the present invention, a material of the light shielding layer includes carbon or a black organic substance.
In a possible implementation manner, in the display panel provided in the embodiment of the present invention, the display panel further includes: the organic light emitting device comprises a pixel defining layer for defining the area where each organic light emitting unit is located, and an array layer positioned between the substrate and each organic light emitting unit.
In a second aspect, an embodiment of the invention provides a display device, including any one of the display panels described above.
The invention has the following beneficial effects:
the display panel and the display device provided by the embodiment of the invention comprise a substrate, a plurality of light-emitting units arranged on the substrate, a light-shielding layer which is arranged on one side of each light-emitting unit, which is far away from the substrate, and has a set distance with the light-emitting units, and a reflecting component arranged between the light-shielding layer and each light-emitting unit; the patterns of the light shielding layer correspond to the light emitting units one by one, and the orthographic projection of the light shielding layer on the substrate at least partially covers the orthographic projection of the light emitting units on the substrate; the reflective members correspond to the light-emitting units one by one, and the orthographic projection of the light-shielding layer on the substrate covers the orthographic projection of the reflective members on the substrate. The shading layer arranged above the light-emitting unit can block the incidence of the outside environment light to the light-emitting unit, so that the reflection of the environment light by the light reflecting surface in the light-emitting unit can be inhibited; and a reflecting component is arranged between the light shielding layer and the light-emitting unit, so that the emergent light of the light-emitting unit can be finally emitted outwards after limited times of reflection of the reflecting component. Because devices such as a polaroid and the like are not used, the reflecting component only reflects light and cannot cause the problem of emergent light color cast.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of a display panel according to an embodiment of the invention;
fig. 3 is a third schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating an exit angle of a light emitting unit according to an embodiment of the invention;
FIG. 5 is a second schematic diagram of the emergent light path of the light-emitting unit in FIG. 3;
fig. 6a is a fourth schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 6b is a schematic diagram of the emergent light path of the light emitting unit in FIG. 6 a;
FIG. 7 is a fifth schematic view illustrating a structure of a display panel according to an embodiment of the present invention;
FIG. 8 is a sixth schematic view illustrating a display panel according to an embodiment of the present invention;
fig. 9 is a schematic top view of a display panel according to an embodiment of the present invention;
FIG. 10a is a plan view of a display device according to an embodiment of the present invention;
fig. 10b is a cross-sectional view of a display device according to an embodiment of the invention.
Detailed Description
The embodiment of the invention provides a display panel and a display device, which are used for reducing the reflection of external environment light and eliminating the color cast of emergent light.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings, wherein the thicknesses and shapes of the components in the drawings do not reflect the true scale of the display device, and are only for the purpose of schematically illustrating the contents of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
To solve the problems in the prior art, an embodiment of the present invention provides a display panel, as shown in fig. 1, the display panel provided in the embodiment of the present invention includes:
a base substrate 11, a plurality of light emitting cells 12 provided on the base substrate 11, a light shielding layer 13 provided on a side of each light emitting cell 12 away from the base substrate 11 and having a predetermined distance from the light emitting cell 12, and a reflecting member 14 provided between the light shielding layer 13 and each light emitting cell 12; wherein,
the patterns of the light shielding layer 13 correspond to the light emitting units 12 one by one, and the orthographic projection of the light shielding layer 13 on the substrate 11 at least partially covers the orthographic projection of the light emitting units 12 on the substrate 11;
the reflective members 14 correspond to the light-emitting units 12 one by one, and the orthographic projection of the light-shielding layer 13 on the base substrate 11 covers the orthographic projection of the reflective members 14 on the base substrate 11.
In practical applications, light emitted from the light emitting units in the display panel is emitted to the outside, and human eyes view a display screen after receiving the light. Meanwhile, external environment light can also enter the display panel, light reflection can occur after the external environment light meets some light reflecting parts in the light emitting unit, and a part of reflected light can be emitted to human eyes together with the light emitted by the light emitting unit, so that the contrast of a display picture of the display panel is reduced, and the display effect is influenced.
In view of this, in the display panel provided in the embodiment of the present invention, the light shielding layer 13 is disposed on a side of each light-emitting unit 12 away from the substrate 11, and the pattern of the light shielding layer 13 corresponds to each light-emitting unit 12 one by one, and the orthographic projection of the light shielding layer 13 on the substrate 11 at least partially covers the orthographic projection of each light-emitting unit 12 on the substrate 11, so that the light reflection of the ambient light on the light-reflecting surface of the light-emitting unit 12 is reduced, and therefore the influence of the reflected light of the ambient light on the light emitted by each light-emitting unit 12 for displaying the image is small, and the contrast of the display screen is not affected.
Further, in order to increase the light emitting efficiency of each light emitting unit 12, the display panel provided in the embodiment of the present invention is provided with the reflective members 14 corresponding to the light emitting units 12 one to one. The reflecting member 14 functions to reflect the light emitted from each light emitting unit 12 toward the light shielding layer 13 to the outside of the display panel for a limited number of times through the reflecting member 14 and the light reflecting surface in each light emitting unit. The reflecting member only has a reflecting effect on light, so that compared with the prior art in which a circular polarizer is used, the reflecting member does not cause color shift to the emergent light of the light emitting unit 12, and the display effect is further improved. The orthographic projection of the light shielding layer 13 on the substrate 11 covers the orthographic projection of each reflecting component 14 on the substrate 11, in other words, the area of the light shielding layer 13 is larger than or equal to the area of each reflecting component 14, so that the light emitted to the light shielding layer 13 by each light emitting unit 12 can be prevented from being absorbed by the light shielding layer 13, and the light emitting efficiency is reduced.
In practical implementation, the reflecting member 14 may be spaced from the corresponding light emitting unit 12 by a certain distance, so that a cavity capable of reflecting and oscillating light inside the cavity is formed between the reflecting member 14 and the light reflecting surface in the light emitting unit, and thus, the emergent light of the light emitting unit 12 is emitted to the outside of the display panel after being reflected. In addition, the display panel provided by the embodiment of the invention can be preferably applied to a display device viewed from an oblique angle, such as a display device arranged at the edge of a keyboard.
As a preferred implementation manner, in the display panel provided in the embodiment of the present invention, as shown in fig. 2, the orthographic projection of the light shielding layer 13 on the base substrate 11 completely covers the orthographic projection of the light emitting unit 12 on the base substrate. In order to avoid the external environment light from being incident on the light reflecting surface of the light emitting unit, the light shielding layer 13 may be set to a size to completely cover the light emitting unit 12 in the orthographic projection direction, and in consideration of the problem that the light shielding layer 13 may have an excessively large area to cause a decrease in light extraction efficiency, the area of the light shielding layer 13 may preferably be set to be equal to the area of each light emitting unit 12.
The direct application object of the display panel provided by the embodiment of the present invention is an organic light emitting diode display panel (OLED), and when the display panel provided by the embodiment of the present invention is an OLED display panel, as shown in fig. 3, the light emitting unit 12 is an organic light emitting unit, and includes a first electrode 121, a light emitting layer 122, and a second electrode 123 sequentially disposed on the substrate 11.
Further, the orthographic projection of the light shielding layer 13 on the base substrate 11 completely covers the orthographic projection of the first electrode 121 on the base substrate 11.
In practical applications, the OLED display panel may be a top emission type display panel.In general, the first electrode 121 may be an anode, and the second electrode 123 may be a cathode. In consideration of the fact that in actual manufacturing, Indium Tin Oxide (ITO) is generally adopted as a substrate to evaporate high-reflectivity metal to manufacture the anode, so that the reflectivity of the anode is high; the cathode with extremely thin thickness is manufactured by adopting a metal evaporation method, so that the cathode has semi-reflection and semi-permeation properties. Thus, in order to suppress reflection of the first electrode 121 to the external environment light, the light shielding layer 13 can completely shield the region where the first electrode 121 is located. As shown in fig. 4, which is an optical path diagram when the light-shielding layer 13 completely shields the light-emitting layer 122 in each light-emitting unit 12, it can be seen from fig. 4 that the edge of the light-emitting layer 122 is emitted to the gap between adjacent light-shielding layers 13 without being shielded by the light-shielding layer 13. That is, in FIG. 4, the light-emitting layer 122 has a light-emitting angle greater than θ1And is less than theta2And in a region greater than theta3And is less than theta4Is not blocked by the light blocking layer 13. When the light-emitting angle of the light-emitting layer 122 is not present in the two regions, the light-emitting layer 122 emits light to the outside of the display panel after being reflected by the reflective member located above the second electrode 123. The light path of the light emitting unit 12 (light emitting layer 122) is explained below in two practical ways.
In an implementable manner, as shown in fig. 3 and 4, the reflecting member 14 is a reflecting layer, the reflecting layer is located on the surface of the light shielding layer 13 facing the substrate 11, and the reflecting surface of the reflecting layer is an uneven surface. In the manufacturing process of the OLED display panel, the second electrode 123 (cathode) is not usually divided into light emitting units, but a whole layer of metal is manufactured as the cathode, and after light emitted from the light emitting unit 12 (light emitting layer 122) enters the reflective component 14 (i.e., the above-mentioned reflective layer), limited reflection occurs between the reflective layer and the cathode (i.e., the second electrode 123), and the light is finally emitted to the outside of the display panel.
As shown in fig. 5, the light emitting layer 122 emits light a outside the outer display panel, and light reflection occurs after the light a enters the reflective layer below the light shielding layer 13, and the reflected light a' enters the second electrode 123; then, the light is reflected again on the surface of the second electrode 123, and the secondary reflected light a ″ enters the void region of the light shielding layer 13 and finally exits to the outside of the display panel. The light path diagram shown in fig. 5 is only illustrated by reflecting twice, and in practical applications, more reflections of light may occur between the light reflecting layer and the second electrode 123 and finally exit to the outside of the display panel.
In another practicable form, as shown in fig. 6a, the reflecting member 14 includes a first light reflecting layer 141 and a second light reflecting layer 142; the first light reflecting layer 141 is positioned on the surface of the light shielding layer 13 facing the substrate 11; the second light reflecting layer 142 is located on a surface of the light emitting unit 12 on a side facing the light shielding layer 13. The light-reflecting surface of the first light-reflecting layer 141 is a plane, and the light-reflecting surface of the second light-reflecting layer 142 is an uneven surface.
As shown in fig. 6b, when the outgoing light b from the light-emitting layer 122 enters the region where the light-shielding layer 13 is located, the outgoing light b firstly enters the surface of the first light-reflecting layer 141 located below the light-shielding layer 13 and is reflected by the first light-reflecting layer 141, the reflected light b' enters the second light-reflecting layer 142, and after the reflection of the second light-reflecting layer 142, the secondary reflected light b ″ enters the gap region of the light-shielding layer 13 and is finally emitted to the outside of the display panel. In practical applications, the reflected light may be reflected more times among the first light reflecting layer 141, the second light reflecting layer 142 and the second electrode and finally emitted outward.
In both embodiments, the light-reflecting surface of the light-reflecting layer is not flat, and such an arrangement can prevent the light perpendicularly incident on the surface of the light-reflecting layer from being reflected by the original path and being unable to exit to the outside of the display panel.
Preferably, in the display panel provided by the embodiment of the present invention, the light reflecting surface with the uneven light reflecting layer may have a sawtooth structure or a wavy structure. As shown in fig. 3 to 5, the light reflecting surface of the light reflecting layer has a zigzag structure, and as shown in fig. 6a and 6b, the light reflecting surface of the second light reflecting layer 142 has a zigzag structure. In practical applications, in order to enable the emergent light of each light emitting unit 12 to be more effectively emitted to the outside of the display panel, the uneven surface of the reflective layer may be set in a manner of combining irregular angles, which is only illustrated here, and no limitation is made to other situations that can be implemented by the uneven surface of the reflective layer.
In practical implementation, in the display panel provided in the embodiment of the present invention, since the reflective light needs to be disposed in the cavity capable of reflecting multiple times, the light shielding layer 13 and each light emitting unit 12 are separated by a set distance, which may be 1-3 μm. In practical applications, the set distance may also be reduced if the thickness of the display panel needs to be reduced, and the embodiment of the present invention does not limit the specific value of the set distance.
The actually manufactured OLED display panel can adopt two packaging forms, namely a packaging cover plate packaging form and a thin film packaging form, so that the embodiment of the invention further provides the following two light shielding layer structures for the two packaging forms.
In an implementation manner, as shown in fig. 3 and fig. 6a, the display panel provided in the embodiment of the present invention further includes: a package cover plate 15 positioned on a side of each light emitting unit 12 facing away from the substrate base plate 11; the light shielding layer 13 is located on the surface of the package cover 15 facing the substrate 11. In the actual manufacturing process, the pattern of the light shielding layer 13 may be formed on the package cover plate, and then the OLED may be packaged.
In another practical manner, as shown in fig. 7, the display panel provided in the embodiment of the present invention further includes: an encapsulation film 16 covering each organic light emitting unit 12; the encapsulation film 16 may include a plurality of alternately arranged organic film layers 161 and inorganic film layers 162; since the light shielding layer 13 and the light emitting unit 12 have a set distance, the light shielding layer 13 may be located at a position except for any one of the film layers adjacent to the second electrode 123, and in the display panel provided in the embodiment of the present invention, the light shielding layer 13 may be located at a position where the organic film layer 161 and/or the inorganic film layer 162 is located. Specifically, the light shielding layer 13 may be located at a position where a certain organic film layer 161 is located (except for an organic film layer adjacent to the second electrode 123), or may be located at a position where a certain inorganic film layer 162 is located (except for an inorganic film layer adjacent to the second electrode 123), or may be located at a position where two or more adjacent film layers are located.
Taking the display panel shown in fig. 7 as an example, the encapsulation film 16 includes three organic film layers 161 and two inorganic film layers 162, and the light shielding layer 13 occupies a position originally corresponding to the inorganic film layer 162 in the middle. Needless to say, the light-shielding layer 13 may occupy a position originally in the middle of the inorganic film layer, and the like, and these are not listed here.
In the case of forming the light-shielding layer 13, the light-shielding layer may be formed using an organic light-shielding material or an inorganic light-shielding material, for example, an inorganic material such as carbon. In the process of forming the encapsulation film 16, the material selected for the light shielding layer 13 may be such that it occupies one of the organic film layer and the inorganic film layer. For example, when an organic light-shielding material is selected, the light-shielding layer 13 can occupy the position of an organic film; when the light-shielding layer 13 is made of an inorganic light-shielding material, the position of an inorganic film layer can be occupied.
The Organic Light Emitting Diode display panel provided in the embodiment of the present invention may be an Active Matrix Organic Light Emitting Diode (AMOLED) panel, and at this time, as shown in fig. 8, the display panel further includes: a pixel defining layer 17 for defining an area where each organic light emitting unit 12 is located, and an array layer 18 between the base substrate 11 and each organic light emitting unit 12.
Specifically, the array layer 18 may include a Thin Film Transistor (TFT) for controlling each light emitting cell 12, a storage capacitor, a driving circuit, and the like. A thin film transistor TFT is used to control the light emitting unit 12 as a pixel unit. As shown in fig. 8, the thin film transistor TFT specifically includes: a gate electrode 181, an active layer 182, a source electrode 183a, and a drain electrode 183b are sequentially stacked. The light emitting unit 12 includes a first electrode 121 (anode), a light emitting layer 122, and a second electrode 123 (cathode). The first electrode 121 of the light emitting unit 12 is connected to the corresponding drain 183b through a via hole for controlling light emission of the light emitting unit.
The reflectivity of the organic light emitting diode display panel is also tested, as shown in fig. 9, which is a top view of the organic light emitting diode display panel provided in the embodiment of the present invention, the pixel defining layer 17 defines an area where each light emitting unit is located, and the light shielding layer 13 completely covers an orthographic projection of the first electrode (anode) in the light emitting unit on the substrate. In the structure shown in fig. 9, the width of the light-shielding layer covering the light-emitting units is a, and the distance between two adjacent light-emitting units is b; in practical tests, when a is 70.5 μm and b is 15 μm, the reflectance of the display panel structure can be as high as 50% without adding the light-shielding layer 13 and the reflective member, and the reflectance can be reduced to 9.6% after adding the light-shielding layer and the reflective member. Therefore, the structure of the display panel provided by the embodiment of the invention can effectively reduce the reflection of ambient light and improve the display effect.
In addition, the substrate of the organic light emitting diode display panel provided by the embodiment of the invention may be a flexible substrate, and the flexible substrate may be transparent, semitransparent or opaque. Specifically, the flexible substrate may be formed using a polymer material such as Polyimide (PI), Polycarbonate (PC), Polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), Polyarylate (PAR), or glass Fiber Reinforced Plastic (FRP). The embodiment of the invention does not limit the material adopted by the flexible substrate.
Based on the same concept, embodiments of the present invention further provide a display device, which includes any one of the display panels provided in embodiments of the present invention. The display device can be an OLED panel, an OLED display, an OLED television or electronic paper and other display devices, and can also be mobile equipment such as a mobile phone and a smart phone.
Taking the above-mentioned display device as an example of the smart phone shown in fig. 10a, a cross-sectional view along AA' of a display screen of the smart phone is shown in fig. 10b, and the display device includes an upper substrate 100, a lower substrate 200, and a display panel 300 located between the upper substrate 100 and the lower substrate 200, where the display panel 300 may be any one of the above-mentioned display panel structures, and specifically may include: a plurality of light emitting units 310, and a light shielding layer 320 and a reflective member 330 are disposed above each light emitting unit, wherein the reflective member 330 is located between the light shielding layer and the light emitting unit 310, and the light shielding layer 320 covers the reflective member 330 and the orthographic projection of the light emitting unit 310 on the substrate. Thereby blocking the incidence of the ambient light to the light emitting unit and inhibiting the reflection of the ambient light by the light reflecting surface in the light emitting unit; the reflection member 330 makes the emergent light of the light emitting unit finally emit outward through the limited reflection of the reflection member, thereby improving the light emitting efficiency.
The display panel and the display device provided by the embodiment of the invention comprise a substrate, a plurality of light-emitting units arranged on the substrate, a light-shielding layer arranged on one side of each light-emitting unit, which is far away from the substrate, and a set distance exists between each light-emitting unit and the light-shielding layer, and a reflecting component arranged between each light-shielding layer and each light-emitting unit; the patterns of the light shielding layer correspond to the light emitting units one by one, and the orthographic projection of the light shielding layer on the substrate at least partially covers the orthographic projection of the light emitting units on the substrate; the reflective members correspond to the light-emitting units one by one, and the orthographic projection of the light-shielding layer on the substrate covers the orthographic projection of the reflective members on the substrate. The shading layer arranged above the light-emitting unit can block the incidence of the outside environment light to the light-emitting unit, so that the reflection of the environment light by the light reflecting surface in the light-emitting unit can be inhibited; and a reflecting component is arranged between the light shielding layer and the light-emitting unit, so that the emergent light of the light-emitting unit can be finally emitted outwards after limited times of reflection of the reflecting component. Because devices such as a polaroid and the like are not used, the reflecting component only reflects light and cannot cause the problem of emergent light color cast.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A display panel, comprising:
the light-emitting device comprises a substrate, a plurality of light-emitting units arranged on the substrate, a light-shielding layer arranged on one side of each light-emitting unit, which is far away from the substrate, and a set distance is reserved between each light-emitting unit and the light-shielding layer, and a reflecting component arranged between each light-shielding layer and each light-emitting unit; wherein,
the patterns of the light shielding layer correspond to the light emitting units one by one, and the orthographic projection of the light shielding layer on the substrate at least partially covers the orthographic projection of the light emitting units on the substrate;
the light-shielding layer is arranged on the substrate and covers the orthographic projection of the reflecting component on the substrate;
the reflecting component is a reflecting layer, the reflecting layer is positioned on the surface of one side of the light shielding layer facing the substrate, and the reflecting surface of the reflecting layer is an uneven surface; or,
the reflecting component comprises a first reflecting layer and a second reflecting layer;
the first light reflecting layer is positioned on the surface of one side of the light shielding layer facing the substrate; the second light reflecting layer is positioned on the surface of one side of the light emitting unit facing the light shielding layer;
the reflecting surface of the first reflecting layer is a plane, and the reflecting surface of the second reflecting layer is an uneven surface.
2. The display panel according to claim 1, wherein an orthogonal projection of the light shielding layer on the base substrate completely covers an orthogonal projection of the light emitting unit on the base substrate.
3. The display panel according to claim 2, wherein the light emitting unit is an organic light emitting unit including a first electrode, a light emitting layer, and a second electrode sequentially provided on the substrate base;
the orthographic projection of the light shielding layer on the substrate completely covers the orthographic projection of the first electrode on the substrate.
4. The display panel according to claim 1, wherein the light reflecting surface having the uneven light reflecting layer has a sawtooth structure or a wave structure.
5. The display panel according to any one of claims 1 to 4, wherein a set distance between the light shielding layer and each of the light emitting cells is 1 to 3 μm.
6. The display panel according to any one of claims 1 to 4, further comprising: the packaging cover plate is positioned on one side of each light-emitting unit, which is far away from the substrate base plate;
the light shielding layer is positioned on the surface of one side, facing the substrate, of the packaging cover plate.
7. The display panel of claim 3, further comprising: an encapsulation film covering each of the organic light emitting units; the packaging film comprises a plurality of layers of organic film layers and inorganic film layers which are alternately arranged;
the shading layer is located at the position of the organic film layer and/or the inorganic film layer.
8. The display panel according to any one of claims 1 to 4, wherein a material of the light shielding layer includes carbon or a black organic substance.
9. The display panel of claim 3, further comprising: the organic light emitting device comprises a pixel defining layer for defining the area where each organic light emitting unit is located, and an array layer positioned between the substrate and each organic light emitting unit.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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| CN108962957B (en) * | 2018-07-27 | 2021-01-26 | 京东方科技集团股份有限公司 | Display substrate, manufacturing method thereof and display device |
| KR20200063591A (en) * | 2018-11-28 | 2020-06-05 | 엘지디스플레이 주식회사 | Display device |
| CN110335955B (en) * | 2019-04-24 | 2022-02-01 | 昆山工研院新型平板显示技术中心有限公司 | Display panel and display device |
| CN110335950A (en) * | 2019-04-26 | 2019-10-15 | 昆山工研院新型平板显示技术中心有限公司 | OLED device, display panel and display device |
| CN110085769B (en) * | 2019-05-13 | 2021-08-27 | 京东方科技集团股份有限公司 | Display panel and method for manufacturing the same |
| TWI724855B (en) * | 2020-04-06 | 2021-04-11 | 富元精密科技股份有限公司 | Light emitting diode device structure |
| EP4131407A4 (en) * | 2020-05-28 | 2023-09-27 | BOE Technology Group Co., Ltd. | Display panel and display device |
| CN112951888A (en) * | 2021-01-28 | 2021-06-11 | 上海天马微电子有限公司 | Display panel and display device |
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| CN104347822A (en) * | 2013-08-08 | 2015-02-11 | 三星显示有限公司 | Display apparatus including encapsulation film and method of inspecting the encapsulation film |
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| CN104347822A (en) * | 2013-08-08 | 2015-02-11 | 三星显示有限公司 | Display apparatus including encapsulation film and method of inspecting the encapsulation film |
| CN104157669A (en) * | 2014-04-16 | 2014-11-19 | 上海天马有机发光显示技术有限公司 | Organic light emitting display panel and manufacturing method and display device thereof |
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