CN113964280A - Display panel and display device - Google Patents
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- CN113964280A CN113964280A CN202111211362.1A CN202111211362A CN113964280A CN 113964280 A CN113964280 A CN 113964280A CN 202111211362 A CN202111211362 A CN 202111211362A CN 113964280 A CN113964280 A CN 113964280A
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/856—Arrangements for extracting light from the devices comprising reflective means
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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Abstract
The application discloses display panel and display device relates to and shows technical field, includes: a substrate; the light-emitting device layer comprises a pixel defining layer and a plurality of light-emitting devices arranged in an array; the pixel defining layer includes a plurality of first openings exposing the light emitting devices and a pixel defining structure; a first light adjusting layer including a plurality of light adjusting structures overlapping the pixel defining structure; a first interval is arranged between every two adjacent light adjusting structures and is overlapped with the first opening; the second light adjusting layer at least partially covers the side wall of the light adjusting structure facing the first opening, and the refractive index of the second light adjusting layer is larger than that of the first light adjusting layer; the light adjusting structure comprises a first side and a second side which are arranged oppositely, the first side is positioned on one side of the second side far away from the substrate, and the protruding structure arranged on the first side protrudes towards the direction of the first light adjusting layer departing from the substrate. The display panel can effectively improve the display effect of the display panel.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
With the continuous development of Display technology, the manufacturing technology of Display panels also tends to mature, and the existing Display panels mainly include Organic Light Emitting Display panels (OLEDs), Liquid Crystal Display panels (LCDs), Plasma Display Panels (PDPs), and the like. The organic light emitting display device as the self light emitting display device does not require a separate light source. Accordingly, the organic light emitting display device can operate at a low voltage, is light and thin, and provides high quality characteristics such as a wide viewing angle, high contrast, and fast response. Therefore, organic light emitting display devices have been receiving attention as next generation display devices. Organic Light-Emitting diodes (OLEDs) are used as Light sources for display devices and lighting devices, and have low power consumption, high resolution, fast response, and other excellent photoelectric characteristics, and are becoming the mainstream technology of OLED display.
In the prior art, for promoting the light-emitting efficiency of the OLED display panel, the material with low refractive index and high refractive index is arranged in the light-emitting direction of the OLED display panel, and the final light-emitting amount is promoted through the refraction and reflection of light. Although the light-emitting efficiency of the display panel can be improved by the design, the problem of high ambient light reflectivity exists, and the display effect of the display panel is affected.
Disclosure of Invention
In view of this, the present application provides a display panel and a display device, which can effectively improve the display effect of the display panel by disposing a protrusion structure on a light modulation structure.
In order to solve the technical problem, the following technical scheme is adopted:
in a first aspect, the present application provides a display panel comprising:
a substrate;
a light emitting device layer on one side of the substrate; the light emitting device layer comprises a pixel defining layer and a plurality of light emitting devices arranged in an array; the pixel defining layer comprises a plurality of first openings exposing the light emitting devices and a pixel defining structure positioned between two adjacent first openings;
the first light adjusting layer is positioned on one side, far away from the substrate, of the light emitting device layer and comprises a plurality of light adjusting structures, and the light adjusting structures are overlapped with the pixel defining structures along a first direction; the two adjacent light adjusting structures comprise a first interval, and the first interval is overlapped with the first opening along the first direction; the first direction is vertical to the plane of the substrate;
the second light adjusting layer is positioned on one side, far away from the substrate, of the first light adjusting layer, at least partially covers the side wall, facing the first opening, of the light adjusting structure along the first direction, and the refractive index of the second light adjusting layer is larger than that of the first light adjusting layer;
the light adjusting structure comprises a first side and a second side which are oppositely arranged along a first direction, the first side is located on one side, far away from the substrate, of the second side, the first side comprises a protruding structure, and the protruding structure protrudes towards the direction, far away from the substrate, of the first light adjusting layer.
In a second aspect, the present application further provides a display device, including a display panel, where the display panel is the display panel provided in the present application.
Compared with the prior art, the display panel and the display device provided by the invention at least realize the following beneficial effects:
according to the display panel and the display device, the light adjusting structure is provided with the protruding structure, and the protruding direction of the protruding structure faces the direction of the first light adjusting layer, which is deviated from the substrate, so that after incident ambient light enters the display panel, diffuse reflection is performed on the concave-convex structure on the light adjusting structure, light is changed through a reflection light path, and the emergent amount of reflected light is reduced; so, display panel's in this embodiment structure can promote luminous efficiency, can reduce the reflectivity of ambient light again, is favorable to promoting display panel's display effect.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
FIG. 2 is a cross-sectional view of the display panel along A-A' in the embodiment of FIG. 1;
fig. 3 is a top view of a display panel according to an embodiment of the present disclosure;
fig. 4 is a top view of another display panel provided in the embodiment of the present application;
fig. 5 is a schematic structural diagram of a light modulation structure according to an embodiment of the present disclosure;
FIG. 6 is another cross-sectional view of the display panel along A-A' in the embodiment of FIG. 1;
fig. 7 is a schematic structural diagram of another light modulation structure provided in the present embodiment;
FIG. 8 is another cross-sectional view of the display panel along A-A' in the embodiment of FIG. 1;
fig. 9 is a top view of another display panel provided in the embodiment of the present application;
FIG. 10 is another cross-sectional view of the display panel along A-A' in the embodiment of FIG. 1;
FIG. 11 is a schematic plan view of a light modulating structure according to an embodiment of the present application;
fig. 12 is a top view of another display panel provided in the embodiment of the present application;
FIG. 13 is a schematic plan view of another light modulating structure provided in the present application;
fig. 14 is a top view of another display panel provided in the embodiment of the present application;
FIG. 15 is a schematic plan view of another light modulating structure provided in the present application;
fig. 16 is a top view of another display panel provided in the embodiment of the present application;
FIG. 17 is a schematic plan view of another light modulating structure provided in accordance with an embodiment of the present application;
FIG. 18 is a schematic plan view of another light modulating structure provided in accordance with an embodiment of the present application;
FIG. 19 is a schematic plan view of another light modulating structure provided in accordance with an embodiment of the present application;
FIG. 20 is another cross-sectional view of the display panel along A-A' in the embodiment of FIG. 1;
fig. 21 is a top view of a display device according to an embodiment of the invention.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, within which a person skilled in the art can solve the technical problem to substantially achieve the technical result. Furthermore, the term "coupled" is intended to encompass any direct or indirect electrical coupling. Thus, if a first device couples to a second device, that connection may be through a direct electrical coupling or through an indirect electrical coupling via other devices and couplings. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims. The same parts between the embodiments are not described in detail.
The following detailed description is to be read in connection with the drawings and the detailed description.
Fig. 1 is a schematic structural diagram of a display panel 100 according to an embodiment of the present application, fig. 2 is a cross-sectional view of the display panel 100 along a-a' in the embodiment of fig. 1, fig. 3 is a top view of the display panel 100 according to the embodiment of the present application, fig. 4 is another top view of the display panel 100 according to the embodiment of the present application, and referring to fig. 1 to 4, the display panel 100 according to the present application includes:
a substrate 10;
a light emitting device layer 30 on one side of the substrate 10; the light emitting device layer 30 includes a pixel defining layer 50 and a plurality of light emitting devices 301 arranged in an array; the pixel defining layer 50 includes a plurality of first openings K exposing the light emitting devices 301 and a pixel defining structure NK between adjacent two of the first openings K;
a first light adjusting layer 60 located on a side of the light emitting device layer 30 away from the substrate 10, wherein the first light adjusting layer 60 includes a plurality of light adjusting structures 61, and the light adjusting structures 61 overlap with the pixel defining structures NK along a first direction D1; two adjacent light modulation structures 61 include a first space S therebetween, and the first space S overlaps the first opening K along the first direction D1; the first direction D1 is perpendicular to the plane of the substrate;
the second light adjusting layer 80 is positioned on one side of the first light adjusting layer 60 far away from the substrate 10, and along the first direction D1, the second light adjusting layer 80 at least partially covers the sidewall S1 of the light adjusting structure 61 facing the first opening K, and the refractive index of the second light adjusting layer 80 is greater than that of the first light adjusting layer 60;
the light adjusting structure 61 includes a first side C1 and a second side C2 opposite to each other along a first direction D1, the first side C1 is located on a side of the second side C2 away from the substrate 10, the first side C1 includes a protrusion structure 70, and the protrusion structure 70 protrudes toward a direction of the first light adjusting layer 60 away from the substrate 10.
Specifically, as shown in fig. 1 and fig. 2, the display panel 100 provided in this embodiment may be an organic light emitting display panel, which has the advantages of self-luminescence, high brightness, wide viewing angle, and fast response, and can use a thin organic material coating and a glass substrate without a backlight. The substrate 10 of this embodiment may be used as a carrier for carrying other structures of the display panel 100, and the substrate 10 may be a glass substrate, and may also be a flexible substrate, which is not specifically limited in this embodiment. The array layer 20 on one side of the substrate 10 may include a gate metal layer, a source/drain metal layer, an active layer, and an insulating layer (not shown) between the conductive film layers for forming a light emitting control unit of the light emitting device 301 of the light emitting device layer 30. The pixel defining layer 50 located on the side of the array layer 20 away from the substrate 10 is used to define the arrangement position of each light emitting device 301 of the light emitting device layer 30, the pixel defining layer 50 may include a plurality of first openings K, and along the direction in which the pixel defining layer 50 points perpendicularly to the substrate 10, the first openings K may at least penetrate through the pixel defining layer 50, and each first opening K is used to arrange the light emitting device 301 of the light emitting device layer 30, that is, the orthographic projection of the light emitting device 301 to the light exit surface of the display panel 100 overlaps with the orthographic projection of the first opening K to the light exit surface of the display panel 100. The light emitting device 301 includes a first electrode 301A, a light emitting portion 301B, and a second electrode 301C on a side of the array layer 20 away from the substrate 10; the first opening K of the pixel defining layer 50 exposes the first electrode 301A of the light emitting device 301, optionally, the first electrode 301A may be an anode, and the second electrode 301C may be a cathode, when a current passes through the first electrode 301A and the second electrode 301C and forms an electric field between the first electrode 301A and the second electrode 301C, the light emitting portion 301B emits light, and the light emitting principle of the light emitting device 301 can be understood by referring to the structure and principle of an organic light emitting device in the related art, which is not described herein again. The portion of the pixel defining layer 50 excluding the first opening K is a pixel defining structure NK. Optionally, the display panel 100 further includes an encapsulation layer 40 located on a side of the light emitting device layer 30 away from the substrate 10, for encapsulating and protecting the light emitting device 301 of the light emitting device layer 30, and optionally, the encapsulation layer 40 may include a stacked structure of an inorganic layer, an organic layer, and a plurality of film layers of the inorganic layer. Optionally, a functional film layer such as a touch layer may be disposed between the encapsulation layer 40 and the first light adjusting layer 60, which is not particularly limited in the present invention.
Referring to fig. 1 to 4, in the invention, a first light modulation layer is disposed on a side of the light emitting device layer 30 away from the substrate 1060 and a second light adjusting layer 80, the first light adjusting layer 60 comprising a plurality of light adjusting structures 61, wherein the light adjusting structures 61 are disposed on a side of the pixel defining structures NK away from the substrate 10; specifically, along the first direction D1, the light modulation structure 61 overlaps the pixel defining structure NK; optionally, as shown in fig. 3, when the light modulation structures 61 are continuous structures, the first space S is an opening surrounding the first opening K and disposed on the light modulation structure 61; alternatively, as shown in fig. 4, the light modulation structure 61 may also be a discontinuous structure, and the first space S partially surrounds the first opening K; along the first direction D1, the first space S overlaps the first opening K, and the second light adjusting layer 80 at least partially covers the sidewall S1 of the light adjusting structure 61 facing the first opening K, it can also be understood that the second light adjusting layer 80 covers the first light adjusting layer 60, the first light adjusting layer 60 is in direct contact with the second light adjusting layer 80, and at least a portion of the second light adjusting layer 80 is located within the first space S, i.e., covers the sidewall S1 of the second light adjusting layer 80; optionally, the first direction D1 is perpendicular to the plane of the substrate 10. On the one hand, please refer to the light propagation path f in FIG. 21Because the refractive index of the second light adjusting layer 80 is greater than the refractive index of the first light adjusting layer 60, at least part of the light emitted by the light emitting device layer 30 is emitted to the light adjusting structure 61, and after the light adjusting structure 61 is emitted to the second light adjusting layer 80, the emergent light is deflected to a small visual angle and emitted right above the light emitting part 301B, which is beneficial to deflecting the large-angle light emitted by the light emitting device 301 to a small angle, thereby being beneficial to improving the light emitting efficiency of the display panel 100; on the other hand, please refer to the light propagation path f in FIG. 22The first light adjusting layer 60 and the second light adjusting layer 80 have an inclined surface in a contact cross section, and light emitted by the light emitting device 301 is totally reflected after being emitted to the inclined surface, so that light with a large viewing angle emitted by the light emitting device 301 can be deflected to a small viewing angle, and the light emitting efficiency of the display panel 100 is improved.
In the correlation technique, when the pixel definition structure in the light-emitting direction of the light-emitting device layer sets up the light adjusting structure with the smaller refractive index, and when one side of the light adjusting structure far away from the substrate sets up the second light adjusting layer with the larger refractive index, the light adjusting structure and the second light adjusting layer are mutually matched, and the part of large-angle light emitted by the light-emitting device layer is adjusted to a small visual angle, so that the light-emitting efficiency of the display panel is favorably improved. However, at the same time, the interface with high refractive index contacting the first light adjusting layer and the second light adjusting layer is likely to cause high reflectivity of ambient light, which affects normal display of the display panel.
In view of this, please refer to fig. 1 to 4, the light modulation structure 61 of the embodiment of the invention includes a first side C1 and a second side C2 opposite to each other along a first direction D1, the second side C2 is closer to the substrate 10 than the first side C1, the first side C1 includes a protrusion structure 70, and the protrusion structure 70 is oriented to a direction away from the substrate 10 of the first light modulation layer 60, so that when the ambient light is incident on the display panel 100, the light path of the incident light is changed by performing the diffuse reflection on the protrusion structure 70 on the light modulation structure 61, as shown in fig. 2, the light propagation path f is shown3The amount of reflected light emitted can be reduced; thus, the structure of the display panel 100 in this embodiment can improve the light emitting efficiency, reduce the reflectivity of the ambient light, and facilitate the improvement of the display effect of the display panel 100.
It should be noted that the embodiment shown in fig. 2 only schematically shows a cross-sectional view of the light modulation structure 61 and the protrusion structure 70, and does not represent the actual number and size of the light modulation structures 61 and the protrusion structures 70; the embodiment shown in fig. 3 only schematically shows the positional relationship between a part of the first opening K and the light modulation structure 61, wherein the size of the first opening K and the size of the light modulation structure 61 do not represent actual sizes; the embodiment shown in fig. 4 only schematically shows the positional relationship between a part of the first opening K and the light modulation structure 61, wherein the size of the first opening K and the size of the light modulation structure 61 do not represent actual sizes either.
With continued reference to fig. 2 and 3, in an alternative embodiment of the present invention, the raised structure 70 does not overlap the first opening K in the first direction D1.
Specifically, as shown in fig. 2 and fig. 3, in the present embodiment, a light emitting device 301 is disposed in the first opening K, and the light emitting device 301 emits light for displaying after being powered on; along the first direction D1, an orthographic projection of the protruding structure 70 in the first direction D1 does not overlap with an orthographic projection of the first opening K in the first direction D1, and it can also be understood that there is a certain distance between an edge of the projection of the first opening K along the first direction D1 and an edge of the projection of the protruding structure 70 in the first direction D1; thus, the arrangement of the protruding structure 70 does not affect the light emission of the light emitting device 301, and the light emitting efficiency of the display panel 100 is ensured.
Referring to fig. 2, in an alternative embodiment of the invention, an included angle θ between the sidewall S1 of the light modulation structure 61 facing the first opening K and the side of the second side C2 of the light modulation structure 61 is an acute angle.
Specifically, as shown in fig. 2, in the present embodiment, the light-adjusting structure 61 is an irregular structure, and includes a first side C1 and a second side C2 opposite to each other along the first direction D1, and includes a side wall S1 opposite to each other along the second direction D2, and includes a first side C1 wall S1 and a second side C2 wall S1, and the first side C1 wall S1 intersects the second side C2 wall S1; the sidewall S1 of the light modulation structure 61 faces the first opening K, and the sidewall S1 has an inclined angle, that is, an included angle between the sidewall S1 of the protrusion structure 70 and a side surface of the second side C2 is an acute angle θ, optionally, the acute angle is 50 ° to 80 °, or may be 60 ° or 70 °, and the side surface of the second side C2 is parallel to the plane of the substrate 10; it can also be understood that the sidewall S1 of the light adjusting structure 61 does not affect the light emitted by the light emitting device 301, and for the light with a large viewing angle emitted by the light emitting device 301, the sidewall S1 of the light adjusting structure 61 reflects the light, so that the light with the large viewing angle is adjusted to a small viewing angle, thereby facilitating the improvement of the light extraction efficiency of the display panel 100 and the improvement of the display effect of the display panel 100.
With continued reference to fig. 2 and 3, in an alternative embodiment of the present invention, the light modulating structure 61 does not overlap the first opening K along the first direction D1.
Specifically, with continued reference to fig. 2 and 3, in the present embodiment, along the first direction D1, the light modulation structure 61 and the first opening K do not overlap; the dimension of the first space S in the direction parallel to the substrate 10 is c1, L1 < c1 < L1+4um, and L1 is the width of the first opening K in the direction parallel to the substrate 10; optionally, the first opening K coincides with a geometric center of the first space S, a first edge of the first space S along the third direction D3 differs from a projection of a first edge of the first opening K along the third direction D3 on the first direction D1 by a distance smaller than 2um, and a second edge of the first space S along the third direction D3 differs from a projection of a second edge of the first opening K along the third direction D3 on the first direction D1 by a distance smaller than 2 um; optionally, the geometric center of the first opening K is not coincident with the geometric center of the first spacing S, the sum of the distance that the first edge of the first spacing S along the third direction D3 is different from the projection of the first edge of the first opening K along the third direction D3 onto the first direction D1, and the distance that the second edge of the first spacing S along the third direction D3 is different from the projection of the second edge of the first opening K along the third direction D3 onto the first direction D1 is less than 4 um; wherein a first edge of the first space S along the third direction D3 is adjacent to a projection of a first edge of the first opening K along the third direction D3 onto the first direction D1, and a second edge of the first space S along the third direction D3 is adjacent to a projection of a second edge of the first opening K along the third direction D3 onto the first direction D1; it can also be understood that the light-adjusting structure 61 does not overlap with the light-emitting device 301, so as to reduce the influence of the light-adjusting structure 61 on the light emitted by the light-emitting device 301 as much as possible and ensure the light-emitting efficiency of the display panel 100.
Referring to fig. 5 and fig. 2, in an alternative embodiment of the invention, a first side C1 of the light adjusting structure 61 includes a first plane P1, the first plane P1 is located on a side of the protrusion structure 70 close to the first opening K, and the first plane P1 is parallel to the plane of the substrate, along a direction parallel to the plane of the substrate.
Specifically, with reference to fig. 5 and fig. 2, in the present embodiment, the first side C1 of the light modulation structure 61 includes a first plane P1, and the first plane P1 is located on a side of the protrusion structure 70 close to the first opening K, it can also be understood that the first plane P1 is adjacent to the first space S, and the first plane P1 is parallel to the plane of the substrate 10, and the first plane P1 is disposed to ensure the process performance of the light modulation structure 61.
It should be noted that the embodiment shown in fig. 5 only schematically shows a cross-sectional view of the first plane P1, and does not represent the actual size of the first plane P1.
Fig. 6 is another cross-sectional view of the display panel 100 along a-a' in the embodiment shown in fig. 1, and fig. 7 is another schematic structural view of the light modulating structure 61 provided in the embodiment of the present application, please refer to fig. 6 and 7, in an alternative embodiment of the present invention, a distance l1 from the first plane P1 to the second side C2 of the light modulating structure 61 is greater than a maximum distance l2 from the protrusion structure 70 to the second side C2 of the light modulating structure 61.
Specifically, with reference to fig. 6 and 7, in the present embodiment, the light modulation structure 61 has another structure, in which the first plane P1 and the plane where the protrusion structure 70 is located have a certain height difference, so that a groove structure is formed in the middle of the first plane P1, and the protrusion structure 70 is located in the groove formed in the first plane P1; optionally, the protruding structure 70 includes a top end facing the second light adjusting layer 80, and the first plane P1 is not in the same plane as the top end of the protruding structure 70, but has a certain height difference; it can also be understood that the vertical distance l1 between the first plane P1 and the second side C2 of the light adjusting structure 61 is greater than the distance l2 between the top end of the protrusion structure 70 and the second side C2 of the light adjusting structure 61, and optionally, the distance h between the first plane P1 and the second side C2 of the light adjusting structure 61 is 2um to 3.5 um; therefore, on one hand, the size of the side surface of the light adjusting structure 61 can be ensured, and the efficiency of converting the light with large visual angle into the light with small visual angle can be ensured; on the other hand, the thickness of the light modulation structure 61 can be reduced, and the thickness of the realized panel can be reduced.
Fig. 8 is another cross-sectional view of the display panel 100 along a-a' in the embodiment shown in fig. 1, fig. 9 is another top view of the display panel 100 provided in the embodiment of the present application, please refer to fig. 8 and fig. 9, in an alternative embodiment of the present invention, the display panel 100 includes the filter layer 90, and the filter layer 90 includes the light shielding structure 91, and the light shielding structure 91 covers the protrusion structure 70 along the first direction D1.
Specifically, please continueReferring to fig. 8 and 9, in the present embodiment, a filter layer 90 is formed on the thin film encapsulation layer 40, and the filter layer 90 replaces an original polarizer, so that the display panel 100 can be bent and reduced in thickness; the filter layer 90 includes a light shielding structure 91 and a color resistor 92, where optionally, the light shielding structure 91 is a black matrix, and the light shielding structure 91 serves as a color defining structure to shield light; the color resistors 92 are used for transmitting light with the same color as the color resistors 92, optionally, the color resistors 92 include filters of multiple colors, and the light shielding structure 91 separates the color resistors 92; the light shielding structure 91 covers the protrusion structure 70 along the first direction D1, i.e., the protrusion structure 70 in two adjacent light modulation structures 61 has a dimension c2 along a direction parallel to the substrate 10,l2 is a dimension of two adjacent light-shielding structures 91 along a direction parallel to the substrate 10, h is a vertical distance between the first plane P1 and the second side C2 of the light-adjusting structure 61, and θ is an included angle between the side surface of the light-adjusting structure 61 and the second side C2; optionally, the geometric center of the opening between the adjacent light shielding structures 91 coincides with the geometric center of the first space S, and the geometric center of the opening between the adjacent light shielding structures 91 may not coincide with the geometric center of the first space S; the distance between the orthographic projection of the first edge of the protrusion 70 in the third direction D3 on the first direction D1 and the orthographic projection of the first space S on the first edge of the third direction D3 on the first direction D1 in the same light modulation structure 61 is smaller thanWherein a first edge of the protruding structure 70 along the third direction D3 is adjacent to an orthographic projection of a first edge of the first space S along the third direction D3 in the first direction; the light shielding structure 91 is located on a side of the protrusion structure 70 close to the substrate 10, and the light shielding structure 91 is disposed to absorb the ambient light, and it can be understood that after the ambient light is diffusely reflected by the protrusion structure 70 on the light modulation structure 61, a part of the light is emitted to the light shielding structure 91, and the light shielding structure 91 covers the protrusion structure 70, so that the reflection of the ambient light can be reduced.
It should be noted that the embodiment shown in fig. 8 only schematically shows a cross-sectional view of the light shielding structure 91, and does not represent the actual size of the light shielding structure 91; the embodiment shown in fig. 9 only schematically shows the positional relationship of the light shielding structure 91 and the projection structure 70, and does not represent actual dimensions.
Referring to fig. 5 in combination with fig. 2, in an alternative embodiment of the invention, the bump structure 70 includes at least two sub-bumps 71, and in the same bump structure 70, a second plane P2 is included between two adjacent sub-bumps 71, and the second plane P2 is parallel to the plane of the substrate 10.
Specifically, with reference to fig. 5 and fig. 2, in the present embodiment, the protrusion structure 70 on the light modulation structure 61 is composed of a plurality of sub-protrusions 71, a second plane P2 is included between two adjacent sub-protrusions 71, and the second plane P2 is parallel to the plane of the substrate 10, it can also be understood that two sub-protrusions 71 are separated by the second plane P2; thus, the reliability of the manufacturing process of the display panel 100 can be ensured.
It should be noted that the embodiment shown in fig. 5 only schematically shows the cross-sectional view of the second plane P2, and does not represent the actual size of the second plane P2.
Fig. 10 is another cross-sectional view of the display panel 100 along a-a' in the embodiment shown in fig. 1, please refer to fig. 10, in an alternative embodiment of the present invention, the first opening K includes a first a opening K1 and a first b opening K2, the protrusion structure 70 includes a first protrusion structure 72, the first protrusion structure 72 is located between the first a opening K1 and the first b opening K2 along a direction parallel to a plane of the substrate 10, the first protrusion structure 72 includes a plurality of first sub-protrusions 73, and a distance from a top surface of each first sub-protrusion 73 to the second side C2 is gradually decreased along a direction in which the first a opening K1 points to the first b opening K2.
Specifically, referring to fig. 10, in the present embodiment, two adjacent first openings K may be defined as a first opening K1 and a first second opening K2, and along a direction parallel to a plane of the substrate, the protrusion structure 70 located between the first opening K1 and the first second opening K2 is defined as a first protrusion structure 72, a plurality of first sub-protrusions 73 are disposed on the first protrusion structure 72, and each first sub-protrusion 73 includes a top surface facing the light modulation structure 61, wherein along a direction in which the first opening K1 points to the first second opening K2, a distance between the top surface of each first sub-protrusion 73 and the second side C2 of the light modulation structure 61 decreases to form an irregular protrusion structure 70, on the one hand, each protrusion structure 70 in the light modulation structure 61 is in a gradual change form, which is helpful for uniformity of etching of the light modulation structure 61; on the other hand, each convex structure 70 in the light adjusting structure 61 is in a gradual change form, which can effectively improve the film peeling phenomenon between the first light adjusting layer 60 and the second light adjusting layer 80; thus, the display effect of the display panel 100 can be improved.
Figure 11 is a schematic plan view of a light modulating structure 61 according to an embodiment of the present application, figure 12 is a top view of the display panel 100 according to the present embodiment, figure 13 is another schematic plan view of a light modulating structure 61 according to an embodiment of the present application, figure 14 is a top view of the display panel 100 according to the present embodiment, figure 15 is another schematic plan view of a light modulating structure 61 according to an embodiment of the present application, figure 16 is a schematic top view of the display panel 100 according to the present embodiment, fig. 17 is another schematic plan view of a light modulation structure 61 according to an embodiment of the present application, please refer to fig. 11 to 17 in combination with fig. 3, in an alternative embodiment of the present invention, the light modulation structure 61 is disposed around the first opening K.
Specifically, the light modulation structure 61 in the present embodiment is a continuous structure, that is, the light modulation structure 61 is disposed around the first opening K; the concrete structure comprises the following components:
with continued reference to fig. 11 to 13 and with reference to fig. 3, the sub-protrusions 71 included in the protrusion structure 70 on the light modulation structure 61 are circular protrusions arranged around the first opening K, and it can be understood that, along the first direction D1, the shape of a circle of circular protrusions arranged around the first opening K is the same as the shape of the first opening K; the shape of a circle of circular bulges arranged around the first opening K can also be different from that of the first opening K; optionally, a plurality of circles of circular protrusions are arranged around the first opening K;
with continued reference to fig. 14 and 15, the sub-protrusions 71 included in the protrusion structure 70 on the light modulation structure 61 are strip-shaped protrusions, and the strip-shaped protrusions are arranged around the first opening K, each side of the first opening K is provided with a strip-shaped protrusion, that is, at least a portion of the strip-shaped protrusions extends along the first direction D1, and at least a portion of the strip-shaped protrusions extends along the second direction D2; optionally, a plurality of circles of strip-shaped protrusions are arranged around the first opening K;
with continued reference to fig. 16 and 17, the sub-protrusions 71 included in the protrusion structure 70 on the light modulation structure 61 are annular protrusions, and the annular protrusions are arranged around the first opening K, at least a portion of the annular protrusions are complete rings, and at least a portion of the annular protrusions are incomplete rings; optionally, a plurality of rings of annular protrusions are arranged around the first opening K;
through the setting of above-mentioned diversified protruding structure 70, in the actual manufacturing procedure, select suitable protruding structure 70, the maximize carries out diffuse reflection to ambient light, reduces the reflection that reduces ambient light, promotes display panel 100's display effect.
Fig. 18 is a schematic plan view of a light modulation structure 61 provided in the present embodiment, fig. 19 is another schematic plan view of the light modulation structure 61 provided in the present embodiment, please refer to fig. 18 and fig. 19 in combination with fig. 2, in an alternative embodiment of the present invention, a display panel 100 includes a plurality of light emitting devices 301 arranged along a second direction D2, a protrusion structure 70 is in a strip shape and extends along the second direction D2, and the second direction D2 is parallel to a plane of a substrate 10.
Specifically, with reference to fig. 18 and fig. 2, in the present embodiment, the display panel 100 includes a plurality of light emitting devices 301 arranged in an array along the second direction D2, the sub-protrusions 71 included in the protrusion structure 70 on the light modulation structure 61 are strip-shaped protrusions, the strip-shaped protrusions extend along the second direction D2 and are continuous strip-shaped protrusions, and optionally, the second direction D2 is parallel to the plane of the substrate; like this, form banding protruding structure 70, the colour separation phenomenon that display panel 100 appears can be avoided to banding protruding structure 70, specifically is, the protruding structure 70 of strip that sets up along second direction D2 for the diffraction that protruding structure 70 leads to and the diffraction coincidence that the sub-pixel leads to makes no obvious diffraction phenomenon on the second direction D2, can effectively improve display panel 100's colour phenomenon.
Referring to fig. 19 and fig. 2, in an alternative embodiment of the invention, the light modulating structure 61 includes a stripe-shaped protrusion of the sub-protrusion 71 included in the protrusion structure 70, the stripe-shaped protrusion extends along the third direction and is a continuous stripe-shaped protrusion, optionally, the third direction D3 is perpendicular to the second direction D2, and the third direction D3 is parallel to the plane of the substrate, so that the stripe-shaped protrusion structure 70 is formed, and the stripe-shaped protrusion structure 70 can avoid the color separation phenomenon of the display panel 100, specifically, the stripe-shaped protrusion structure 70 is disposed along the third direction, so that the diffraction caused by the protrusion structure 70 coincides with the diffraction caused by the sub-pixels, and the diffraction phenomenon of the display panel 100 can be effectively improved because there is no obvious diffraction phenomenon in the third direction D3.
Referring to fig. 18 in combination with fig. 2, in an alternative embodiment of the invention, the dimension of the protrusion structure 70 along the second direction D2 is equal to the dimension of the display panel 100 along the second direction D2.
Specifically, with continuing reference to fig. 18 and with reference to fig. 2, in the present embodiment, the dimension of the protrusion structure 70 along the second direction D2 is equal to the dimension of the display panel 100 along the second direction D2, and it can be understood that the stripe-shaped protrusion included in the protrusion structure 70 is a continuous structure, and the length thereof penetrates through the display panel 100 along the second direction D2; thus, the stripe-shaped protrusion structure 70 is formed, and the stripe-shaped protrusion structure 70 can effectively avoid the color separation phenomenon of the display panel 100, thereby effectively improving the diffraction phenomenon of the display panel 100.
FIG. 20 is a cross-sectional view of the display panel 100 along A-A' in the embodiment shown in FIG. 1. referring to FIG. 20, in an alternative embodiment of the invention, the display panel 100 includes a first light emitting device 301-1 and a second light emitting device 302-1, the first light emitting device 301-1 emits light with a wavelength λ 1, and the second light emitting device 302-1 emits light with a wavelength λ 2, where λ 1 > λ 2;
the light modulation structure 61 includes a first light modulation structure 61-1 and a second light modulation structure 61-2, the first light modulation structure 61-1 surrounds the first light emitting device 301-1, and the second light modulation structure 61-2 surrounds the second light emitting device 302-1; the bump structure 70 includes a plurality of sub-bumps 71;
in the protrusion structure 70 of the first light modulation structure, the distance between the centers of adjacent sub-protrusions 71 is d 1; in the protrusion structure 70 of the second light modulation structure, the distance between the centers of adjacent sub-protrusions 71 is d 2; wherein d1 is greater than d 2.
Specifically, please refer to fig. 20 with reference to fig. 11 to 17, in this embodiment, different light emitting devices 301 may emit light of different colors, and correspondingly, the wavelength of the light emitted by the first light emitting device 301-1 is λ 1, and the wavelength of the light emitted by the second light emitting device 302-1 is λ 2; in view of the dispersion deterioration phenomenon that may be caused by different wavelengths of light emitted by the light emitting devices 301, the present embodiment needs to design the light adjusting structures 61 differently corresponding to different light emitting devices 301; when λ 1 > λ 2, the first light emitting device 301-1 corresponds to the first light adjusting structure 61-1, the distance between the centers of the adjacent sub-protrusions 71 in the protrusion structure 70 corresponding to the first light adjusting structure 61-1 is D1, the second light emitting device 302-1 corresponds to the second light adjusting structure 61-2, the distance between the centers of the adjacent sub-protrusions 71 in the protrusion structure 70 corresponding to the second light adjusting structure 61-2 is D2, and D1 > D2, optionally, when the sub-protrusions 71 are circular protrusions, the centers of the sub-protrusions 71 are the centers of the circular protrusions themselves, and the distance between the centers of the adjacent two sub-protrusions 71 is the minimum distance between the two adjacent circles of sub-protrusions 71 arranged along the third direction D3; when the sub-protrusions 71 are strip-shaped protrusions, the centers of the sub-protrusions 71 are the middlemost positions of the strip-shaped protrusions along the third direction D3, and the distance between the centers of two adjacent sub-protrusions 71 is the minimum distance between two adjacent circles of sub-protrusions 71 arranged along the third direction D3; please refer to the light propagation path f in fig. 204Light is emitted from the filter layer to the protrusion 70 of the light-adjusting structure 61 and then emitted from the protrusion 70 to the second light-adjusting layer 80, so as to avoid the color separation phenomenon of the display panelThe distances between the central lines of the adjacent sub-protrusions 71 in the protrusion structure around the device 301 are arranged differently, so that the light emitted by the second light modulation layer 80 has no obvious color separation phenomenon; wherein, the color separation phenomenon of the display panel can be overcome by adjusting the secondary diffraction angle of the light rays with different wavelengths, and the color separation phenomenon is represented by the following formula d1Given by k λ, θ1Is the secondary diffraction angle of the light, λ is the wavelength of the light, k is the diffraction order of the light; in order to make the secondary diffraction angles of the light with different wavelengths the same, the distance d between the centers of the adjacent sub-protrusions 71 in the protrusion structure 70 can be adjusted to make the secondary diffraction angles of the light emitted by different light emitting devices 301 the same, so as to improve the color separation phenomenon of the display panel 100.
specifically, with continuing reference to fig. 20, in the present embodiment, the light emitting devices 301 include light emitting devices 301 of multiple colors, optionally, a red light emitting device, a green light emitting device, a blue light emitting device, and the like, and the wavelengths of light emitted by different light emitting devices 301 are different, specifically, the wavelength ratio of light emitted by the light emitting devices 301 is equal to the distance ratio between the center lines of the sub-protrusions 71 in the protrusion structure 70 corresponding to the light emitting devices 301; according to this rule, the projection structures 70 having different center lines of the sub-projections 71 may be provided for the light emitting devices 301 of different colors to adjust the secondary diffraction angles of the light rays emitted from the red light emitting device, the green light emitting device, and the blue light emitting device, so that the secondary diffraction angles of the light rays emitted from the red light emitting device, the green light emitting device, and the blue light emitting device are the same, and the color separation phenomenon of the display panel 100 is improved.
With reference to fig. 20, in an alternative embodiment of the invention, the display panel 100 includes a filter layer, the filter layer includes color resistors 92 and light-shielding structures 91, and the protrusion structures 70 of the first light modulation structure 61-1 are located between the protrusion structures 70 and the light-shielding structures 91 corresponding to the color resistors 92 along the first direction D1; the color resistor 92 corresponding to the protrusion structure 70 of the second light modulation structure 61-2 is located between the protrusion structure 70 and the light shielding structure 91.
Specifically, referring to fig. 20, in the present embodiment, the display panel 100 is provided with the filter layer 90, the filter layer 90 is located on the packaging layer 40, and the filter layer 90 includes color resistors 92 and a light shielding structure 91 located between the color resistors 92; along the first direction D1, a partial color resistor 92 is further disposed on a side of the light shielding layer close to the light adjusting structure 61, and it can be understood that the color resistor 92 corresponding to the first light adjusting structure 61-1 is located between the first light adjusting structure 61-1 and the light shielding structure 91, and the color resistor 92 corresponding to the second light adjusting structure 61-2 is located between the second light adjusting structure 61-2 and the light shielding layer, wherein the wavelengths of the light that can be filtered by the color resistor 92 corresponding to the first light adjusting structure 61-1 and the color resistor 92 corresponding to the second light adjusting structure 61-2 are different, so that the wavelengths of the light emitted to the light adjusting structure 61 are different, and the secondary diffraction angle of the light with different wavelengths emitted through the protrusion structure 70 is adjusted, thereby effectively improving the color separation phenomenon of the display panel 100.
With continued reference to fig. 20, in an alternative embodiment of the present invention, the light modulating structure 61 and the color resistors 92 comprise the same material.
Specifically, referring to fig. 20, in the present embodiment, the light adjusting structure 61 and the color resistor 92 are made of the same material, so that the light adjusting structure 61 not only can diffuse the ambient light and reduce the reflection of the ambient light, but also can absorb the light from the light adjusting structure 61, thereby further reducing the reflection of the ambient light.
Based on the same inventive concept, the present invention further provides a display device 200, and fig. 21 is a top view of the display device 200 according to the embodiment of the present invention, the display device includes a display panel 100, wherein the display panel 100 is the display panel 100 according to the embodiment of the present invention. In the display device 200 of the present invention, the light-adjusting structure 61 is provided with the protrusion structure 70, and the protrusion structure 70 can diffuse the ambient light incident on the display panel 100, so as to reduce the reflection of the ambient light incident on the display panel 100, which is beneficial to improving the display effect of the display device.
It should be noted that, for the embodiments of the display device 200 provided in the embodiments of the present application, reference may be made to the embodiments of the display panel 100, and repeated descriptions are omitted. The apparatus provided herein may be embodied as: any product or component with practical functions such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
According to the embodiments, the application has the following beneficial effects:
according to the display panel and the display device, the light adjusting structure is provided with the protruding structure, and the protruding structure faces the direction of the first light adjusting layer away from the substrate, so that after incident ambient light enters the display panel, diffuse reflection is performed on the concave-convex structure on the light adjusting structure, light is changed through a reflection light path, and the emergent quantity of reflected light is reduced; so, display panel's in this embodiment structure can promote luminous efficiency, can reduce the reflectivity of ambient light again, is favorable to promoting display panel's display effect.
The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.
Claims (17)
1. A display panel, comprising:
a substrate;
a light emitting device layer on one side of the substrate; the light emitting device layer comprises a pixel defining layer and a plurality of light emitting devices arranged in an array; the pixel defining layer comprises a plurality of first openings exposing the light emitting devices and a pixel defining structure positioned between two adjacent first openings;
the first light adjusting layer is positioned on one side, far away from the substrate, of the light emitting device layer and comprises a plurality of light adjusting structures, and the light adjusting structures are overlapped with the pixel defining structures along a first direction; a first interval is arranged between two adjacent light adjusting structures, and the first interval is overlapped with the first opening along the first direction; the first direction is vertical to the plane of the substrate;
the second light adjusting layer is positioned on one side, far away from the substrate, of the first light adjusting layer, at least part of the side wall, facing the first opening, of the light adjusting structure is covered by the second light adjusting layer along the first direction, and the refractive index of the second light adjusting layer is larger than that of the first light adjusting layer;
light adjusting structure includes the edge the relative first side and the second side that sets up of first direction, first side is located the second side is kept away from one side of base plate, first side is including protruding structure, protruding structure orientation first light adjusting layer deviates from the direction of base plate is protruding.
2. The display panel according to claim 1, wherein the convex structure does not overlap with the first opening in the first direction.
3. The display panel of claim 1, wherein an included angle between a sidewall of the light modulation structure facing the first opening and a side surface of the second side of the light modulation structure is an acute angle.
4. The display panel of claim 1, wherein the light modulating structure does not overlap the first opening along the first direction.
5. The display panel of claim 1, wherein the first side of the light modulating structure comprises a first plane, and the first plane is located on a side of the protrusion structure close to the first opening along a direction parallel to a plane of the substrate, and the first plane is parallel to the plane of the substrate.
6. The display panel of claim 5, wherein the distance from the first plane P1 to the second side of the light modulating structure is greater than the maximum distance from the protrusion structure to the second side of the light modulating structure.
7. The display panel according to claim 1, wherein the display panel comprises a filter layer, the filter layer comprises a light shielding structure, and the light shielding structure covers the protrusion structure along the first direction.
8. The display panel according to claim 1, wherein the protrusion structure comprises at least two sub-protrusions, and in the same protrusion structure, a second plane is included between two adjacent sub-protrusions, and the second plane is parallel to the plane of the substrate.
9. The display panel according to claim 1, wherein the first opening comprises a first opening and a first second opening, the protrusion structure comprises a first protrusion structure, the first protrusion structure is located between the first opening and the first second opening in a direction parallel to a plane of the substrate, the first protrusion structure comprises a plurality of first sub-protrusions, and a distance from a top surface of each of the first sub-protrusions to the second side gradually decreases in a direction along the first opening toward the first second opening.
10. The display panel of claim 1, wherein the light modulating structure is disposed around the first opening.
11. The display panel according to claim 1, wherein the display panel comprises a plurality of light emitting devices arranged along a second direction, the protrusion structure is in a shape of a bar and extends along the second direction, and the second direction is parallel to a plane of the substrate.
12. The display panel according to claim 11, wherein a dimension of the protrusion structure in the second direction is equal to a dimension of the display panel in the second direction.
13. The display panel according to claim 1, wherein the display panel comprises a first light emitting device and a second light emitting device, the first light emitting device emits light having a wavelength λ 1, and the second light emitting device emits light having a wavelength λ 2, where λ 1 > λ 2;
the light adjusting structure includes a first light adjusting structure surrounding the first light emitting device and a second light adjusting structure surrounding the second light emitting device; the bump structure comprises a plurality of sub-bumps;
in the protrusion structure of the first light modulation structure, the distance between the centers of adjacent sub-protrusions is d 1; in the protrusion structure of the second light modulation structure, the distance between the centers of adjacent sub-protrusions is d 2; wherein d1 is greater than d 2.
15. the display panel of claim 14, wherein the display panel comprises a filter layer, the filter layer comprises a color resist and a light blocking structure, and the protruding structures of the first light adjusting structure are located between the corresponding color resist and the light blocking structure along the first direction; the color resistance corresponding to the convex structure of the second light adjusting structure is positioned between the convex structure and the shading structure.
16. The display panel of claim 15, wherein the light modulating structure and the color resistance comprise the same material.
17. A display device comprising a display panel as claimed in claims 1-16.
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