CN115377175A - Display panel and display device - Google Patents

Abstract

The application discloses display panel and display device relates to and shows technical field, can improve display panel's luminous efficacy, and then reduce the consumption. A display panel, comprising: a substrate layer; the pixel limiting layer is arranged on one side of the substrate layer and provided with a plurality of first openings, and light emitting devices are arranged in the first openings; the first refractive index layer is arranged on one side, far away from the substrate layer, of the pixel limiting layer, and is provided with a plurality of second openings, and orthographic projections of the second openings on the substrate layer at least partially cover orthographic projections of the first openings on the substrate layer; and a second refractive index layer is arranged in the second opening, and the refractive index of the second refractive index layer is greater than that of the first refractive index layer.

Description

Display panel and display device

Technical Field

The application relates to the technical field of display, in particular to a display panel and a display device.

Background

Currently, an Organic Light Emitting Diode (OLED) display is one of the hot spots in the display research field today. With the continuous development of the OLED display technology, users have higher and higher requirements on standby time of the display device, which puts higher requirements on power consumption of the display panel.

However, the light extraction efficiency of the conventional display panel is low, and it is difficult to further reduce power consumption.

Disclosure of Invention

The embodiment of the application provides a display panel and a display device, which can improve the light emitting efficiency of the display panel and further reduce the power consumption.

In a first aspect of embodiments of the present application, a display panel is provided, including:

a substrate layer;

the pixel limiting layer is arranged on one side of the substrate layer and provided with a plurality of first openings, and light emitting devices are arranged in the first openings;

the first refractive index layer is arranged on one side, far away from the substrate layer, of the pixel limiting layer, and is provided with a plurality of second openings, and orthographic projections of the second openings on the substrate layer at least partially cover orthographic projections of the first openings on the substrate layer;

and a second refractive index layer is arranged in the second opening, and the refractive index of the second refractive index layer is greater than that of the first refractive index layer.

In some embodiments, the included angle between the side wall of the second opening and the plane of the substrate layer is an acute angle; and/or the presence of a gas in the gas,

the refractive index of the first refractive index layer is less than 1.6, and the refractive index of the second refractive index layer ranges from 1.6 to 1.9; and/or the presence of a gas in the atmosphere,

the first refractive index layer has a thickness ranging from 1.5 to 3 μm, and the second refractive index layer has a thickness ranging from 3 to 6 μm.

In some embodiments, the areas of the orthographic projection of the first openings on the substrate layer are different for the light emitting devices emitting different colors of light.

In some embodiments, the shape edge of the orthographic projection of the first opening on the substrate layer comprises a first arc angle and a second arc angle, the first arc angle has a radius of curvature in a range of 8 μm to 15 μm, and the second arc angle has a radius of curvature in a range of 0 to 3 μm;

the fan-shaped angle range corresponding to the arc length of the first arc angle is 8-15 degrees, and the fan-shaped angle range corresponding to the arc length of the second arc angle is 0-3 degrees.

In some embodiments, the light emitting device comprises a first light emitting device, a second light emitting device, and a third light emitting device, the first light emitting device, the second light emitting device, and the third light emitting device emitting light of different colors;

the area of the orthographic projection of the first opening corresponding to the first light-emitting device on the substrate layer is larger than the area of the orthographic projection of the first opening corresponding to the second light-emitting device on the substrate layer, and the area of the orthographic projection of the first opening corresponding to the first light-emitting device on the substrate layer is larger than the area of the orthographic projection of the first opening corresponding to the third light-emitting device on the substrate layer;

an orthographic projection of the first opening corresponding to the first light-emitting device on the substrate layer comprises the first arc-shaped angle and the second arc-shaped angle.

In some embodiments, the second refractive index layer covers the first refractive index layer and the second opening.

In some embodiments, the edge of the second opening comprises a protrusion and/or a recess.

In some embodiments, an edge of the orthographic projection of the second opening on the substrate layer corresponding to the straight edge of the orthographic projection of the first opening on the substrate layer comprises at least one convex circular arc and/or at least one concave circular arc; and/or the presence of a gas in the atmosphere,

in a case where the shape edge of the orthographic projection of the first opening on the substrate layer includes the first arc angle and the second arc angle, the first arc angle corresponds to at least one convex arc and/or at least one concave arc.

In some embodiments, an edge of an orthographic projection of the second opening on the substrate layer corresponding to the same light emitting device includes the convex circular arc or the concave circular arc.

In some embodiments, the radius of the convex arc ranges from 0.5 μm to 2 μm; and/or the presence of a gas in the gas,

the radius range of the concave arc is 0.5-2 μm.

In some embodiments, an orthographic projection of the first opening on the substrate layer is less than 5 μ ι η from an orthographic projection of the second opening on the substrate layer;

the orthographic projection of the first opening on the substrate layer falls into the orthographic projection of the second opening on the substrate layer; or the like, or, alternatively,

the orthographic projection of the first opening on the substrate layer and the orthographic projection of the second opening on the substrate layer are overlapped in a staggered mode.

In some embodiments, an edge of an orthographic projection of the first opening on the substrate layer is parallel to an edge of an orthographic projection of the second opening on the substrate layer.

In some embodiments, the distance between the edge of the orthographic projection of the first opening on the substrate layer and the edge of the orthographic projection of the second opening on the substrate layer is different for the light-emitting devices emitting different colors of light.

In some embodiments, where the shape edge of the orthographic projection of the first opening on the substrate layer comprises one of the first arc-shaped corners and three of the second arc-shaped corners, the shape edge of the orthographic projection of the second opening on the substrate layer comprises at least two of the first arc-shaped corners;

the first arc-shaped angle corresponding to the first opening is parallel to any one of the first arc-shaped angles corresponding to the second opening, and any two of the first arc-shaped angles corresponding to the second opening are arranged oppositely.

In some embodiments, a geometric center of an orthographic projection of the first opening on the substrate layer coincides with a geometric center of an orthographic projection of the second opening on the substrate layer; and/or the presence of a gas in the atmosphere,

the first openings are arranged in a row direction and a column direction in an array mode, and the edge of the orthographic projection of the first openings on the substrate layer is flush with the edge of the orthographic projection of the second openings on the substrate layer in the row direction; and/or the presence of a gas in the gas,

the first openings are arranged in a row direction and a column direction in an array mode, and the edge of the orthographic projection of the first openings on the substrate layer is flush with the edge of the orthographic projection of the second openings on the substrate layer in the column direction; and/or the presence of a gas in the atmosphere,

the partial edge of the orthographic projection of the first opening on the substrate layer is parallel to the partial edge of the orthographic projection of the second opening on the substrate layer.

In some embodiments, the display panel further includes:

an encapsulation layer disposed between the pixel defining structure and the first refractive index layer;

the touch layer is arranged between the packaging layer and the first refractive index layer, or the touch layer is arranged on one side, far away from the substrate layer, of the second refractive index layer;

and/or the presence of a gas in the gas,

the filter layer is arranged between the packaging layer and the first refractive index layer, or the filter layer is arranged on one side, far away from the substrate layer, of the second refractive index layer.

In a second aspect of the embodiments of the present application, there is provided a display device including:

the display panel according to the first aspect.

According to the display device provided by the embodiment of the application, the first refractive index layer and the second refractive index layer are arranged through the display panel, the first refractive index layer is provided with the plurality of second openings, and the orthographic projection of the second openings on the substrate layer at least partially covers the orthographic projection of the first openings on the substrate layer; a second refractive index layer is arranged in the second opening, and the refractive index of the second refractive index layer is larger than that of the first refractive index layer. The second refractive index layer is filled in the second opening, the second opening corresponds the setting of first opening, be provided with emitting device in the first opening, the light that emitting device sent penetrates into the second refractive index layer earlier, because the refracting index on second refractive index layer is greater than the refracting index on first refractive index layer, under the condition that light penetrated into first refractive index layer from the second refractive index layer, satisfy the condition that light is secret to go into the light and dredges, under the condition that the incident angle satisfies the critical angle of total reflection, can take place the total reflection on the interface on first refractive index layer and second refractive index layer, then the light of the inclination outgoing that emitting device produced can be gathered together and then jets out display panel. The first refractive index layer and the second refractive index layer can play a light condensation role, light emitted by the inclination angle of the light-emitting device is gathered into the front view angle or approaches the front view angle, the light emitted by the inclination angle can be prevented from being absorbed or dissipated, the effective light emitting amount of the display panel can be improved, the display brightness of the display panel is improved, the driving power consumption can be reduced under the driving condition of the same display brightness, the low-power-consumption driving is realized, and the service life can be prolonged. The light condensing effect of the light emitting devices can also improve the color cast of the display panel, namely, the light emitted by each light emitting device is reflected, so that the chromaticity shift caused by the fact that the emergent light of the inclined angle is emergent from the right upper side of the light emitting devices of other colors can be avoided.

Drawings

Fig. 1 is a schematic structural diagram of a display panel provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

fig. 3 is a top view of a partial structure of a display panel according to an embodiment of the present disclosure;

fig. 4 is a partial top view of another display panel according to an embodiment of the present disclosure;

FIG. 5 is a schematic cross-sectional view taken along line C-C of a top view of a partial structure of a display panel according to an embodiment of the present disclosure;

fig. 6 is a partial top view of a display panel according to an embodiment of the present disclosure;

fig. 7 is a schematic top view illustrating a positional relationship between a light emitting device and a second opening according to an embodiment of the present disclosure;

FIG. 8 is a schematic cross-sectional view taken along line D-E of a top view of a partial structure of another display panel according to an embodiment of the present disclosure;

fig. 9 is a top view of a partial structure of another display panel according to an embodiment of the present disclosure;

fig. 10 is a top view of a partial structure of a display panel according to an embodiment of the present disclosure;

fig. 11 is a partial top view of another display panel according to an embodiment of the present disclosure;

fig. 12 is a top view of a partial structure of another display panel provided in the embodiment of the present application;

FIG. 13 is a top view of a partial structure of another display panel according to an embodiment of the present disclosure;

fig. 14 is a schematic structural diagram of a display device according to an embodiment of the present application.

Detailed Description

In order to better understand the technical solutions provided by the embodiments of the present specification, the technical solutions of the embodiments of the present specification are described in detail below with reference to the drawings and specific embodiments, and it should be understood that the specific features in the embodiments and examples of the present specification are detailed descriptions of the technical solutions of the embodiments of the present specification, and are not limitations on the technical solutions of the embodiments of the present specification, and the technical features in the embodiments and examples of the present specification may be combined with each other without conflict.

In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element. The term "two or more" includes the case of two or more.

Currently, organic light emitting diode displays are one of the hot spots in the research field of displays today. With the continuous development of the OLED display technology, the user has higher and higher requirements on the standby time of the display device, which puts higher requirements on the power consumption of the display panel. However, the light extraction efficiency of the conventional display panel is low, and it is difficult to further reduce power consumption.

In view of this, embodiments of the present disclosure provide a display panel and a display device, which can improve the light emitting efficiency of the display panel and further reduce power consumption.

In a first aspect of an embodiment of the present application, a display panel is provided, and fig. 1 is a schematic structural diagram of the display panel provided in the embodiment of the present application. As shown in fig. 1, a display panel provided in an embodiment of the present application includes: a substrate layer 100, a pixel defining layer 200, a light emitting device 300, a first refractive index layer 400, and a second refractive index layer 500. The substrate layer 100 may be a rigid substrate, such as a glass substrate; the substrate layer 100 may also be a flexible substrate, such as a polyimide substrate. The pixel defining layer 200 is disposed at one side of the substrate layer 100, the pixel defining layer 200 is provided with a plurality of first openings 210, and the light emitting devices 300 are disposed in the first openings 210; the pixel defining layer 200 serves to space the light emitting devices 300, and the light emitting devices 300 may emit light for picture display. The first refractive index layer 400 is arranged on a side of the pixel defining layer 200 away from the substrate layer 100, the first refractive index layer 400 is provided with a plurality of second openings 410, and an orthographic projection of the second openings 410 on the substrate layer 100 at least partially covers an orthographic projection of the first openings 210 on the substrate layer 100; the second opening 410 is provided therein with a second refractive index layer 500, and the refractive index of the second refractive index layer 500 is greater than that of the first refractive index layer 400. A part of the light emitted from the light emitting device 300 may be totally reflected and generally reflected after being irradiated on the interface between the first refractive index layer 400 and the second refractive index layer 500, as a light propagation path indicated by solid arrows shown in fig. 1. The second refractive index layer 500 is filled in the second opening 410, the second opening 410 is arranged corresponding to the first opening 210, the light emitting device 300 is arranged in the first opening, light emitted by the light emitting device 300 firstly enters the second refractive index layer 500, because the refractive index of the second refractive index layer 500 is greater than that of the first refractive index layer 400, the condition that light is dense and sparse is met under the condition that the light enters the first refractive index layer 400 from the second refractive index layer 500, under the condition that the incident angle meets the total reflection critical angle, the total reflection can be generated on the interface between the first refractive index layer 400 and the second refractive index layer 500, and then the light emitted by the inclined angle generated by the light emitting device 300 can be gathered and then emitted out of the display panel. The light emitted from each light emitting device 300 at an oblique angle is easy to be emitted from the light emitting devices of other colors, so that the color mixing of the light emitted from different light emitting devices 300 is caused, the display chromaticity shift is easy to be caused, and the light condensing effect of the light emitting devices 300 can also improve the color shift of the display panel.

It should be noted that all light rays are not totally reflected on the interface between the first refractive index layer 400 and the second refractive index layer 500, and the arrangement of the refractive indexes of the two film layers is different, so that the light rays irradiated on the interface are easily reflected, the propagation direction of the light rays is changed, light condensation is realized, and the occurrence of total reflection can improve the light condensation efficiency.

It is easy to understand that, the arrangement of the first refractive index layer 400 and the second refractive index layer 500, in combination with the arrangement of the second opening 410, can form a light-gathering prism to gather the light emitted from the light-emitting device 300, so as to avoid the waste of the light with an inclined angle and improve the light-emitting efficiency of the display panel.

It should be noted that the first opening 210 and the second opening 410 shown in fig. 1 are illustrated by dashed boxes. The dimensions of the light emitting device shown in fig. 1 are merely illustrative and are not intended to be a specific limitation of the present application.

It should be noted that, in general, light emitted from an inclined angle generated by the light emitting device is reflected by other film layers on one side of the light emitting device away from the substrate layer, and then is absorbed, dissipated or reflected to one side of the display panel away from the display side for emitting after being repeatedly reflected, which is difficult to be used for displaying a picture, so that the effective light emitting amount of the display panel is low.

In view of the above problem, the display panel provided by the embodiment of the present application is provided with a first refractive index layer 400 and a second refractive index layer 500, wherein the first refractive index layer 400 is provided with a plurality of second openings 410, and an orthographic projection of the second openings 410 on the substrate layer 100 at least partially covers an orthographic projection of the first openings 210 on the substrate layer 100; the second opening 410 is provided therein with a second refractive index layer 500, and the refractive index of the second refractive index layer 500 is greater than that of the first refractive index layer 400. The second refractive index layer 500 is filled in the second opening 410, the second opening 410 is arranged corresponding to the first opening 210, the light emitting device 300 is arranged in the first opening, light emitted by the light emitting device 300 firstly enters the second refractive index layer 500, because the refractive index of the second refractive index layer 500 is greater than that of the first refractive index layer 400, the condition that light is dense and sparse is met under the condition that the light enters the first refractive index layer 400 from the second refractive index layer 500, under the condition that the incident angle meets the total reflection critical angle, total reflection can occur on the interface of the first refractive index layer 400 and the second refractive index layer 500, and then the light emitted by the inclined angle generated by the light emitting device 300 can be gathered and then emitted out of the display panel. The first refractive index layer 400 and the second refractive index layer 500 can play a role in light condensation, light emitted from the inclined angle of the light emitting device 300 is gathered to be emitted from the front view angle or approach the front view angle, the light emitted from the inclined angle can be prevented from being absorbed or dissipated, the effective light emitting amount of the display panel can be improved, the display brightness of the display panel is improved, the driving power consumption can be reduced under the driving condition of the same display brightness, the low-power-consumption driving is realized, and the service life can be prolonged. The light condensing effect of the light emitting devices 300 can also improve the color shift of the display panel, that is, the light condensing effect of the light emitted by each light emitting device 300 can avoid the chromaticity shift caused by the emission of the light emitted from the light emitting devices of other colors at an inclined angle.

For example, the material of the first refractive index layer 400 and the second refractive index layer 500 may be polyimide or ink, and the embodiment of the present application is not particularly limited.

In some embodiments, the refractive index of the first refractive index layer 400 is less than 1.6, and may be, for example, 1.54. The second refractive index layer 500 has a refractive index ranging from 1.6 to 1.9, and may be, for example, 1.7. The adjustment of the refractive index may be doping zirconium or zirconium oxide in a base material, and the base material may be polyimide or ink, and the embodiment of the present application is not particularly limited.

In some embodiments, the first refractive index layer has a thickness ranging from 1.5 μm to 3 μm, and the second refractive index layer has a thickness ranging from 3 μm to 6 μm.

In some embodiments, the second refractive index layer 500 covers the first refractive index layer 400 and the second opening 410. The sidewalls of the second opening 410 form an acute angle with the plane of the substrate layer 100. For example, fig. 2 is a schematic structural diagram of another display panel provided in an embodiment of the present application. As shown in fig. 2, the second refractive index layer 500 is entirely provided, and the second refractive index layer 500 covers the entire first refractive index layer 400 and the second opening 410, thereby functioning as a planarization film layer and securing an effective interface area between the second refractive index layer 500 and the first refractive index layer 400. As shown in fig. 2, an included angle a between an extension surface of the sidewall of the second opening 410 and the plane of the substrate layer 100 is an acute angle, and it is easy to understand that the included angle on one side is an acute angle and the included angle on the other side is an obtuse angle, so that the sidewall of the second opening is an inclined surface, which can increase the area of the reflective surface that generates total reflection, gather more light rays, and converge more light rays.

In some embodiments, the areas of the substrate layer 100 that are orthographically projected onto the substrate layer by the first openings 210 corresponding to the light-emitting devices 300 emitting light of different colors are different. The light emitting area of the different light emitting devices 300 may be determined according to a chromaticity scheme of the display panel, chromaticity characteristics of the light emitting devices, and the like, and the embodiment of the present application is not particularly limited.

In some embodiments, the shape edge of the orthographic projection of the first opening 210 on the substrate layer 100 comprises a first arc angle and a second arc angle, the radius of curvature of the first arc angle is in the range of 8 μm to 15 μm, and the radius of curvature of the second arc angle is in the range of 0 μm to 3 μm; the arc angle is a connecting corner of two edges, the corner can be a first arc angle and a second arc angle, and the curvature of the first arc angle is larger than that of the second arc angle. If the radius of curvature of the second arc-shaped corner is 0, the second arc-shaped corner can be regarded as a right angle, and the shape of the orthographic projection of the first opening 210 on the substrate layer 100 can include an arc-shaped corner and a right angle, and can also include arc-shaped corners with different curvatures, and the embodiment of the present application is not particularly limited. The corner having the smaller curvature may allow an increase in a light emitting area of the light emitting device, and the corner having the larger curvature may be easily implemented in a process.

In some embodiments, the arc length of the first arc angle corresponds to a sector angle in the range of 8 ° to 15 °, and the arc length of the second arc angle corresponds to a sector angle in the range of 0 ° to 3 °. The larger the fan angle is, the longer the corresponding arc length is, and the arc length of the first arc angle and the arc length of the second arc angle can be set according to a specific chromaticity scheme.

Exemplarily, fig. 3 is a top view of a partial structure of a display panel provided in an embodiment of the present application. As shown in fig. 3, the light emitting device 300 may include a first light emitting device 310, a second light emitting device 320, and a third light emitting device 330, and the first light emitting device 310, the second light emitting device 320, and the third light emitting device 330 emit light of different colors. The orthographic projection area of the first opening 210 corresponding to the first light-emitting device 310 on the substrate layer 100 is larger than the orthographic projection area of the first opening 210 corresponding to the second light-emitting device 320 on the substrate layer 100, and the orthographic projection area of the first opening 210 corresponding to the first light-emitting device 310 on the substrate layer 100 is larger than the orthographic projection area of the first opening 210 corresponding to the third light-emitting device 330 on the substrate layer 100. One first light emitting device 310, one second light emitting device 320 and two third light emitting devices 330 may be combined into one pixel unit as a repeating unit of the display panel for mixing and emitting color light to realize color picture display. An orthographic projection of the first opening 210 of the first light emitting device 310 on the substrate layer includes a first arc angle a and a second arc angle B. Edges of the orthographic projection of the second opening 410 on the substrate layer 100 corresponding to the first, second and third light emitting devices 310, 320 and 330 are first, second and third opening edges 411, 412 and 413, respectively.

Illustratively, as shown in fig. 3, the first light emitting device 310 may emit blue light, the second light emitting device 320 may emit red light, and the third light emitting device 330 may emit green light, constituting three primary colors, for color mixing to obtain colors.

In some embodiments, the edge of the orthographic projection of the corresponding first opening 210 of the light emitting device 300 on the substrate layer 100 is parallel to the edge of the orthographic projection of the second opening 410 on the substrate layer 100. The distance of the light emitted from the light emitting device 300 to the inner wall of the second opening 410 is uniform, a uniform light condensing effect on the light emitted from the light emitting device 300 can be achieved, and the chromaticity uniformity of a single light emitting device can be improved.

Illustratively, referring to fig. 3, the first opening edge 411 is parallel to an orthographic projection edge of the first opening 210 corresponding to the first light emitting device 310 on the substrate layer 100, the second opening edge 412 is parallel to an orthographic projection edge of the first opening 210 corresponding to the second light emitting device 320 on the substrate layer 100, and the third opening edge 413 is parallel to an orthographic projection edge of the first opening 210 corresponding to the third light emitting device 330 on the substrate layer 100.

In some embodiments, an orthographic projection of the second opening 410 on the substrate layer 100 is less than 5 μm from an orthographic projection of the first opening 210 on the substrate layer 100. It can be understood that the projected edge of the second opening 410 is within ± 5 μm of the projected edge of the first opening 210.

In some embodiments, the distance between the edge of the orthographic projection of the first opening 210 on the substrate layer 100 and the edge of the orthographic projection of the second opening 410 on the substrate layer 100 is different for light-emitting devices 300 emitting different colors of light. Exemplarily, fig. 4 is a partial structure top view of another display panel provided in an embodiment of the present application. As shown in fig. 4, the distance between the first light emitting device 310 and the first opening edge 411 is the smallest, followed by the distance between the second light emitting device 320 and the second opening edge 412 being centered, and the distance between the third light emitting device 330 and the third opening edge 413 is the largest. The greater the distance between the projection edge of the first opening and the projection edge of the second opening, the longer the optical path of the optical path, the more light rays can be received by the inner wall of the second opening to be injected, the more light rays can be gathered, the area of the light-emitting device is small, the generated light quantity is small, and the light output quantity after gathering can be improved through the distance from the edge of the second opening.

In some embodiments, an orthographic projection of the first opening 210 on the substrate layer 100 falls within an orthographic projection of the second opening 410 on the substrate layer 100. For example, referring to fig. 3 and 4, the projection of the second opening 410 surrounds the projection of the first opening corresponding to the light emitting device 300, and the opening area of the second opening 410 is larger than the opening area of the corresponding light emitting device 300, so that all the oblique emergent light rays emitted by the light emitting device 300 can be emitted into the material section formed by the second opening, and are reflected to the maximum extent, and the light rays are gathered.

Fig. 5 is a schematic cross-sectional view taken along C-C of a top view of a partial structure of a display panel according to an embodiment of the present disclosure. As shown in fig. 5, the display panel further includes a driving device including a semiconductor layer 601, a gate electrode 602, a source electrode 603, a drain electrode 604, and a first insulating layer 605. The light-emitting device comprises an anode 301, a light-emitting layer 302 and a cathode 303, wherein the anode 301 is electrically connected with a source 603 through a via hole of a second insulating layer 700, an encapsulation layer 800 is arranged between the cathode 303 and a first refractive index layer 400, and the encapsulation layer 800 can protect the light-emitting layer 302 and prevent the light-emitting layer 302 from being corroded by water and oxygen in the external environment. The dashed box in fig. 5 indicates the effective light emitting area of the light emitting device, which is mainly limited by the boundary of the light emitting layer 302. The second open region of the first refractive index layer 400 is greater than an effective light emitting area of the light emitting device, and the second opening surrounds the light emitting device.

In some embodiments, an orthographic projection of the first opening 210 on the substrate layer 100 is misaligned and overlapped with an orthographic projection of the second opening on the substrate layer. The staggered overlapping is mainly adjusted according to the requirement of the light condensation rate, the shape of the second opening can be set to be symmetrical under the condition that the shape of the light-emitting device is asymmetrical, the projection of the first opening corresponding to the light-emitting device and the projection of the second opening can be staggered, the light condensation effect can be balanced, and the uniformity of the light condensation effect is improved. The symmetrical shape of the second opening can enable the light rays at two sides of the light-emitting device to be focused to be consistent, and color cast can be improved.

In some embodiments, in the case that the shape edge of the orthographic projection of the corresponding first opening 210 of the light-emitting device 300 on the substrate layer 100 includes one first arc angle a and three second arc angles B, the shape edge of the orthographic projection of the second opening 410 on the substrate layer includes at least two first arc angles a; the first arc-shaped angle a corresponding to the light emitting device 300 is parallel to any first arc-shaped angle a corresponding to the second opening 410, that is, the first arc-shaped angle a of the light emitting device 300 corresponds to one first arc-shaped angle a of the second opening 410, and any two first arc-shaped angles corresponding to the second opening 410 are arranged oppositely, that is, any two first arc-shaped angles a of the second opening 410 can be symmetrically arranged. It should be noted that the number of the first arc-shaped angles a of the second opening 410 may also be 3 or 4, and the embodiment of the present application is not particularly limited.

Fig. 6 is a top view of a partial structure of another display panel provided in an embodiment of the present application. Fig. 7 is a schematic top view illustrating a positional relationship between a light emitting device and a second opening according to an embodiment of the present disclosure. With reference to fig. 6 and 7, the first light emitting device 310 is provided with a first arc angle a, and the rest are second arc angles B; two first arc angles A are arranged on the projection edge of the second opening, and the rest are second arc angles B. Although the four corners of the first light emitting device 310 are asymmetric, the two first arc-shaped corners a of the second opening may be arranged such that the four corners of the second opening are symmetric in pairs, a symmetric light condensing effect for the first light emitting device may be achieved, the light condensing effect may be balanced, the uniformity of the light condensing effect may be improved,

fig. 8 is a schematic cross-sectional view taken along line D-E of a top view of a partial structure of another display panel provided in an embodiment of the present application. As shown in fig. 8, the edge of one first arc-shaped corner of the second opening is located inside the projected edge of the first light-emitting device, and the distance between the two edges is b1, and the distance between the edge of the other first arc-shaped corner of the second opening and the edge of the first arc-shaped corner of the light-emitting device is b 2. The relationship between the sizes of b1 and b2 is not particularly limited in the embodiments of the present application.

In some embodiments, the edge of the second opening 410 may include a convex portion, the edge of the second opening 410 may include a concave portion, and the edge of the second opening 410 may include a convex portion and a concave portion. The convex part and the concave part are arranged, so that the surface area of the inner wall of the second opening 410 can be increased, the area of a reflecting surface can be increased, more light rays can be reflected, and a better light-gathering effect is achieved.

In some embodiments, an edge of the orthographic projection of the second opening 410 on the substrate layer 100, which is a straight edge of the orthographic projection of the first opening 210 corresponding to the light-emitting device 300 on the substrate layer 100, comprises at least one convex circular arc; the edge of the orthographic projection of the first opening 210 corresponding to the light-emitting device 300 on the substrate layer 100 and the edge of the second opening 410 corresponding to the orthographic projection on the substrate layer 100 comprise at least one concave circular arc; the edge of the orthographic projection of the second opening 410 on the substrate layer 100, which corresponds to the straight edge of the orthographic projection of the first opening 210 corresponding to the light-emitting device 300 on the substrate layer 100, comprises at least one convex circular arc and at least one concave circular arc. The convex arc may correspond to a projection of a convex portion and the concave arc may correspond to a projection of a concave portion. In general, the light emitting device 300 has a larger light emitting area corresponding to the straight edge of the projection of the first opening 210 corresponding to the light emitting device, and emits more light, and the second opening corresponding to the straight edge is provided with the convex portion and the concave portion, so that the amount of reflected light can be further increased.

Fig. 9 is a top view of a partial structure of another display panel according to an embodiment of the present disclosure. As shown in fig. 9, the edge of the orthographic projection of the second opening on the substrate layer corresponding to the straight edge of the orthographic projection of the first opening 210 on the substrate layer where the light emitting device is located includes a concave circular arc 401.

Exemplarily, fig. 10 is a top view of a partial structure of a display panel provided in an embodiment of the present application. As shown in fig. 10, the edge of the orthographic projection of the second opening on the substrate layer corresponding to the straight edge of the orthographic projection of the first opening 210 on the substrate layer where the light emitting device is located includes a convex circular arc 402.

Fig. 11 is a top view of a partial structure of another display panel according to an embodiment of the present disclosure. As shown in fig. 11, an edge of the orthographic projection of the second opening on the substrate layer, corresponding to the straight edge of the orthographic projection of the first opening on the substrate layer where the second light emitting device 320 is located, includes a concave circular arc 401; the edge of the orthographic projection of the second opening on the substrate layer corresponding to the straight edge of the orthographic projection of the first opening on the substrate layer corresponding to the first light-emitting device 310 and the third light-emitting device 330 respectively comprises a convex circular arc 402.

In some other embodiments, a concave portion may be disposed at an edge of the second opening corresponding to the first light emitting device, and a convex portion may be disposed at an edge of the second opening corresponding to the second light emitting device. The chromaticity scheme of the display panel is mainly considered, and the areas of the reflecting surfaces corresponding to different light-emitting devices are adjusted in a targeted manner, so that the display panel with required coordinates is obtained. In addition, the number of the convex portions and the concave portions may be set according to a chromaticity scheme, and the embodiment of the present application is not particularly limited.

It should be noted that the above-mentioned concave-convex portions are relative, and the concave-convex portions can be exchanged under different references, which is only schematic.

In some embodiments, in the case that the shape edge of the orthographic projection of the corresponding first opening of the light emitting device 300 on the substrate layer 100 includes a first arc angle a and a second arc angle B, the first arc angle a corresponds to at least one convex arc and/or at least one concave arc. Because the curvature of first arc angle A is great, can set up concave part and convex part on the inner wall that first arc angle corresponds, carry out omnidirectional reflection area's increase to light-emitting device's light.

In some embodiments, the edge of the orthographic projection of the second opening 410 on the substrate layer 100 corresponding to the same light emitting device 300 comprises a convex arc or a concave arc. It can be understood that only the convex portion or the concave portion is disposed on the second opening 410 corresponding to one light emitting device 300, which facilitates the process preparation and reduces the process difficulty.

In some embodiments, the radius of the convex arc 402 ranges from 0.5 μm to 2 μm, and may specifically range from 1 μm to 2 μm. The radius of the concave arc 401 is in the range of 0.5 μm to 2 μm, and specifically may be in the range of 1 μm to 2 μm, and may be set according to the requirement of the reflection area.

Fig. 12 is a partial top view of another display panel according to an embodiment of the present disclosure. As shown in fig. 12, the orthographic projections of the first openings 210 on the substrate layer, where the first light emitting devices 310 and the second light emitting devices 320 are respectively located, are both rectangular, and the corresponding first opening edges 411 and the corresponding second opening edges 412 are both rectangular. The edge of the orthographic projection of the first opening on the substrate layer at which the third light emitting device 330 is located comprises one first arc-shaped corner, the other three corners are right angles, and the corresponding edge 413 of the third opening comprises two first arc-shaped corners and two right angles. The shape and arrangement of the light emitting devices shown in fig. 12 are merely illustrative and are not intended to be specific limitations of the embodiments of the present application.

In some embodiments, the display panel provided by the embodiments of the present application further includes an encapsulation layer, which may be disposed between the pixel defining structure and the first refractive index layer, for protecting the light emitting device.

In some embodiments, the display panel may further include a touch layer, the touch layer may implement a touch function, the touch layer may be disposed between the encapsulation layer and the first refractive index layer, the touch layer may be further disposed on a side of the second refractive index layer away from the substrate layer, and a position of the touch layer may be set according to a setting of a factory production process or an interference factor of film layer stacking. In addition, the position of the touch layer needs to be set in consideration of the influence of the distance factor of the light emitted by the light emitting device reaching the interface between the first refractive index layer and the second refractive index layer on the light condensation effect.

In some embodiments, the display panel may further include a filter layer, the filter layer may be disposed between the encapsulation layer and the first refractive index layer, and the filter layer may be further disposed on a side of the second refractive index layer away from the substrate layer. The filter layer can improve color cast of the display panel, and the position setting can refer to the consideration of the touch layer.

Fig. 13 is a top view of a partial structure of another display panel according to an embodiment of the present disclosure. As shown in fig. 13, the touch electrode TC of the touch layer is disposed around the light emitting device, and does not affect the light emission of the light emitting device. Each light-emitting device can correspond to a filter layer, the filter layer can be a color filter film, and the orthographic projection of the first opening where the light-emitting device is located on the substrate layer falls into the orthographic projection of the corresponding filter film on the substrate layer. For example, in the case that the first light emitting device 310 emits blue light, the first light emitting device 310 may be disposed corresponding to the blue filter 910, and the orthographic projection of the first light emitting device 310 on the substrate layer may fall into the orthographic projection of the blue filter 910 on the substrate layer. The second light emitting device 320 emits red light, and the second light emitting device is disposed corresponding to the red filter 920. The third light emitting device 330 emits green light, and the third light emitting device is disposed corresponding to the green filter 930. Fig. 13 is merely an exemplary diagram, and the embodiment of the present application is not particularly limited. It should be noted that the boundary of the orthographic projection of the light-emitting device on the substrate layer can be understood as the boundary of the orthographic projection of the light-emitting layer on the substrate layer.

In some embodiments, a geometric center of an orthographic projection of the first opening on the substrate layer coincides with a geometric center of an orthographic projection of the second opening on the substrate layer. The centers of the first opening and the second opening are coincided, and the shapes of the first opening and the second opening are correspondingly arranged, so that the uniformity of gathering light rays is facilitated.

In some embodiments, the first openings are arranged in a row direction and a column direction, and the light emitting devices may be arranged in an array arrangement in the row direction and the column direction corresponding to the pixel design of the display panel, and the corresponding first openings are also arranged in the row direction and the column direction. The edge of the orthographic projection of the corresponding first opening on the substrate layer is flush with the edge of the orthographic projection of the second opening on the substrate layer in the row direction. The edge of the orthographic projection of the first opening on the substrate layer is flush with the edge of the orthographic projection of the second opening on the substrate layer in the column direction. Flush may be understood as being aligned, for example, the projected edges of the first opening and the second opening coincide or are equally spaced, and the embodiments of the present application are not particularly limited.

In some embodiments, a partial edge of the first opening that is orthographic-projected on the substrate layer is parallel to a partial edge of the second opening that is orthographic-projected on the substrate layer. Some edges of the first opening and the second opening may be parallel, and the rest edges may not be parallel, and the embodiment of the present application is not particularly limited.

In a second aspect of the embodiments of the present application, a display device is provided, and fig. 14 is a schematic structural diagram of the display device provided in the embodiments of the present application. As shown in fig. 14, the display device includes: the display panel 1000 according to the first aspect.

The display device provided by the embodiment of the application can comprise a smart phone, a tablet computer, a notebook computer, a television, a wearable display device or other displays and the like.

According to the display device provided by the embodiment of the application, the first refractive index layer and the second refractive index layer are arranged through the display panel, the first refractive index layer is provided with the plurality of second openings, and the orthographic projection of the second openings on the substrate layer at least partially covers the orthographic projection of the first openings on the substrate layer; a second refractive index layer is arranged in the second opening, and the refractive index of the second refractive index layer is larger than that of the first refractive index layer. The second refractive index layer is filled in the second opening, the second opening corresponds the setting of first opening, be provided with emitting device in the first opening, the light that emitting device sent penetrates into the second refractive index layer earlier, because the refracting index on second refractive index layer is greater than the refracting index on first refractive index layer, under the condition that light penetrated into first refractive index layer from the second refractive index layer, satisfy the condition that light is secret to go into the light and dredges, under the condition that the incident angle satisfies the critical angle of total reflection, can take place the total reflection on the interface on first refractive index layer and second refractive index layer, then the light of the inclination outgoing that emitting device produced can be gathered together and then jets out display panel. The first refractive index layer and the second refractive index layer can play a light condensation role, light emitted by the inclination angle of the light-emitting device is gathered into the front view angle or approaches the front view angle, the light emitted by the inclination angle can be prevented from being absorbed or dissipated, the effective light emitting amount of the display panel can be improved, the display brightness of the display panel is improved, the driving power consumption can be reduced under the driving condition of the same display brightness, the low-power-consumption driving is realized, and the service life can be prolonged. The light condensing effect of the light emitting devices can also improve the color cast of the display panel, namely, the emergent light quantity of the light emitted by each light emitting device is improved, the corresponding color purity can be improved, and the chromaticity shift caused by the emergent light of the inclined angle from the right above the light emitting devices of other colors is avoided.

It should be noted that, in the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to relevant descriptions of other embodiments for parts that are not described in detail in a certain embodiment.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

While preferred embodiments of the present specification 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 changes and modifications that fall within the scope of the specification.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present specification without departing from the spirit and scope of the specification. Thus, if such modifications and variations of the present specification fall within the scope of the claims of the present specification and their equivalents, then such modifications and variations are also intended to be included in the present specification.

Claims (17)

1. A display panel, comprising:

a substrate layer;

the pixel limiting layer is arranged on one side of the substrate layer and provided with a plurality of first openings, and light emitting devices are arranged in the first openings;

a first refractive index layer arranged on a side of the pixel defining layer away from the substrate layer, the first refractive index layer being provided with a plurality of second openings, an orthographic projection of the second openings on the substrate layer at least partially covering an orthographic projection of the first openings on the substrate layer;

and a second refractive index layer is arranged in the second opening, and the refractive index of the second refractive index layer is greater than that of the first refractive index layer.

2. The display panel according to claim 1,

an included angle between the side wall of the second opening and the plane of the substrate layer is an acute angle; and/or the presence of a gas in the gas,

the refractive index of the first refractive index layer is less than 1.6, and the refractive index of the second refractive index layer ranges from 1.6 to 1.9; and/or the presence of a gas in the atmosphere,

the first refractive index layer has a thickness ranging from 1.5 to 3 μm, and the second refractive index layer has a thickness ranging from 3 to 6 μm.

3. The display panel according to claim 1,

the orthographic projection areas of the first openings corresponding to the light-emitting devices emitting light rays with different colors on the substrate layer are different.

4. The display panel according to claim 1,

the shape edge of the orthographic projection of the first opening on the substrate layer comprises a first arc-shaped angle and a second arc-shaped angle, the curvature radius of the first arc-shaped angle ranges from 8 mu m to 15 mu m, and the curvature radius of the second arc-shaped angle ranges from 0 mu m to 3 mu m;

the fan-shaped angle range corresponding to the arc length of the first arc angle is 8-15 degrees, and the fan-shaped angle range corresponding to the arc length of the second arc angle is 0-3 degrees.

5. The display panel according to claim 4,

the light emitting device comprises a first light emitting device, a second light emitting device and a third light emitting device, wherein the colors of light emitted by the first light emitting device, the second light emitting device and the third light emitting device are different;

the orthographic projection area of the first opening corresponding to the first light-emitting device on the substrate layer is larger than that of the first opening corresponding to the second light-emitting device on the substrate layer, and the orthographic projection area of the first opening corresponding to the first light-emitting device on the substrate layer is larger than that of the first opening corresponding to the third light-emitting device on the substrate layer;

an orthographic projection of the first opening corresponding to the first light-emitting device on the substrate layer comprises the first arc-shaped angle and the second arc-shaped angle.

6. The display panel according to any one of claims 1 to 5,

the second refractive index layer covers the first refractive index layer and the second opening.

7. The display panel according to any one of claims 1 to 5,

the edge of the second opening comprises a protrusion and/or a recess.

8. The display panel according to claim 7,

the edge of the orthographic projection of the second opening on the substrate layer, which corresponds to the straight edge of the orthographic projection of the first opening on the substrate layer, comprises at least one convex circular arc and/or at least one concave circular arc; and/or the presence of a gas in the atmosphere,

in case the shape edge of the orthographic projection of the first opening on the substrate layer comprises the first arc angle and the second arc angle, the first arc angle corresponds to at least one convex circular arc and/or at least one concave circular arc.

9. The display panel according to claim 8,

the edge of the orthographic projection of the second opening corresponding to the same light-emitting device on the substrate layer comprises the convex circular arc or the concave circular arc.

10. The display panel according to claim 8,

the radius range of the convex arc is 0.5-2 mu m; and/or the presence of a gas in the gas,

the radius range of the concave arc is 0.5-2 μm.

11. The display panel according to any one of claims 1 to 5,

the distance between the orthographic projection of the first opening on the substrate layer and the orthographic projection of the second opening on the substrate layer is less than 5 μm;

an orthographic projection of the first opening on the substrate layer falls within an orthographic projection of the second opening on the substrate layer; or the like, or, alternatively,

the orthographic projection of the first opening on the substrate layer and the orthographic projection of the second opening on the substrate layer are overlapped in a staggered mode.

12. The display panel according to claim 11,

the edge of the orthographic projection of the first opening on the substrate layer is parallel to the edge of the orthographic projection of the second opening on the substrate layer.

13. The display panel according to claim 11,

the distances between the orthographic projection edges of the first openings on the substrate layer, corresponding to the light-emitting devices emitting light rays with different colors, and the orthographic projection edges of the second openings on the substrate layer are different.

14. The display panel according to claim 4,

in the case that the shape edge orthographically projected on the substrate layer of the first opening includes one of the first arc-shaped corners and three of the second arc-shaped corners, the shape edge orthographically projected on the substrate layer of the second opening includes at least two of the first arc-shaped corners;

the first arc-shaped angle corresponding to the first opening is parallel to any one of the first arc-shaped angles corresponding to the second opening, and any two of the first arc-shaped angles corresponding to the second opening are arranged oppositely.

15. The display panel according to claim 11,

a geometric center of an orthographic projection of the first opening on the substrate layer coincides with a geometric center of an orthographic projection of the second opening on the substrate layer; and/or the presence of a gas in the gas,

the first openings are arrayed in the row direction and the column direction, and the edge of the orthographic projection of the first openings on the substrate layer is flush with the edge of the orthographic projection of the second openings on the substrate layer in the row direction; and/or the presence of a gas in the gas,

the first openings are arranged in a row direction and a column direction in an array mode, and the edge of the orthographic projection of the first openings on the substrate layer is flush with the edge of the orthographic projection of the second openings on the substrate layer in the column direction; and/or the presence of a gas in the gas,

the partial edge of the orthographic projection of the first opening on the substrate layer is parallel to the partial edge of the orthographic projection of the second opening on the substrate layer.

16. The display panel according to claim 1, characterized by further comprising:

an encapsulation layer disposed between the pixel defining structure and the first refractive index layer;

the touch layer is arranged between the packaging layer and the first refractive index layer, or the touch layer is arranged on one side, far away from the substrate layer, of the second refractive index layer;

and/or the presence of a gas in the gas,

the filter layer is arranged between the packaging layer and the first refractive index layer, or the filter layer is arranged on one side, far away from the substrate layer, of the second refractive index layer.

17. A display device, comprising:

the display panel of any one of claims 1-16.

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