CN115036437A

CN115036437A - Display panel and display device

Info

Publication number: CN115036437A
Application number: CN202210699509.4A
Authority: CN
Inventors: 乐琴
Original assignee: Wuhan Tianma Microelectronics Co Ltd
Current assignee: Wuhan Tianma Microelectronics Co Ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-09-09

Abstract

The invention discloses a display panel and a display device. The display panel comprises a first display area and a second display area, wherein the first display area at least partially surrounds the second display area, the first display area comprises a first light ray adjusting structure, the first light ray adjusting structure comprises a first light ray adjusting layer and a second light ray adjusting layer, and the refractive index of the second light ray adjusting layer is larger than that of the first light ray adjusting layer; the second display area comprises a second light adjusting structure, the second light adjusting structure comprises a third light adjusting layer and a fourth light adjusting layer, the refractive index of the fourth light adjusting layer is larger than that of the third light adjusting layer, the vertical light emitting direction of the display panel is followed, the thickness of the first light adjusting layer is adjusted to be smaller than that of the third light adjusting layer, the third light adjusting layer can receive more large-angle light, the light emitting angle of the third light adjusting layer is adjusted, the front viewing angle light emitting efficiency of the second display area is improved, and the whole service life of the display panel is guaranteed.

Description

Display panel and display device

Technical Field

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

Background

With the rapid development of terminal devices, more and more electronic devices with display functions are widely applied to daily life and work of people, bring great convenience to daily life and work of people, and become an indispensable important tool for people at present.

Electronic equipment with camera technique under the screen has gradually become the key trend of paying attention to, and the region that screen camera was located is the but light-permeable display screen, but there are demonstration and life difference in the region that screen camera was located and normal display area, has reduced user's experience and has felt.

Disclosure of Invention

The invention provides a display panel and a display device, which are used for improving the light emitting efficiency of a second display area and prolonging the service life.

In a first aspect, the present invention provides a display panel comprising a first display area and a second display area, the first display area at least partially surrounding the second display area;

the display panel includes:

a substrate base plate;

a plurality of light emitting elements located on one side of the base substrate;

the first light adjusting structure is positioned in the first display area and on one side, far away from the substrate, of the light emitting element, and comprises a first light adjusting layer and a second light adjusting layer, wherein the refractive index of the second light adjusting layer is larger than that of the first light adjusting layer; the first light adjusting layer comprises a first opening, and the first opening is at least partially overlapped with the light-emitting element;

the second light ray adjusting structure is positioned in the second display area and on one side, far away from the substrate, of the light-emitting element, and comprises a third light ray adjusting layer and a fourth light ray adjusting layer, and the refractive index of the fourth light ray adjusting layer is larger than that of the third light ray adjusting layer; the third light adjustment layer comprises a second opening, and the second opening is at least partially overlapped with the light-emitting element;

along a first direction, the thickness of the first light adjusting layer is smaller than that of the third light adjusting layer, wherein the first direction is a vertical light emitting direction of the display panel.

In a second aspect, the present invention provides a display device comprising the display panel of any one of the first aspects.

According to the technical scheme of the embodiment of the invention, the display panel comprises a first display area and a second display area, the first display area at least partially surrounds the second display area, the first display area comprises a first light adjusting structure, the first light adjusting structure comprises a first light adjusting layer and a second light adjusting layer, and the refractive index of the second light adjusting layer is greater than that of the first light adjusting layer; the second display area comprises a second light adjusting structure, the second light adjusting structure comprises a third light adjusting layer and a fourth light adjusting layer, the refractive index of the fourth light adjusting layer is larger than that of the third light adjusting layer, the vertical light emitting direction of the display panel is followed, the thickness of the first light adjusting layer is adjusted to be smaller than that of the third light adjusting layer, the third light adjusting layer can receive more large-angle light, the light emitting angle of the third light adjusting layer is adjusted, the front viewing angle light emitting brightness of the second display area is improved, and the using effect of the display panel is guaranteed.

It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A' of FIG. 1;

fig. 3 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of another display panel according to an embodiment of the disclosure;

fig. 8 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of another display panel according to an embodiment of the disclosure;

fig. 10 is a schematic structural diagram of a second display area according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of another display panel according to an embodiment of the disclosure;

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

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In view of the problem of difference between the display and the service life of the area where the screen camera is located in the display panel and the normal display area in the background art, the embodiment of the invention provides the display panel, wherein the display panel comprises a first display area and a second display area, and the first display area at least partially surrounds the second display area; the display panel includes: a substrate base plate; a plurality of light emitting elements located on one side of the base substrate; the first light adjusting structure is positioned in the first display area and on one side of the light-emitting element far away from the substrate, the first light adjusting structure comprises a first light adjusting layer and a second light adjusting layer, and the refractive index of the second light adjusting layer is larger than that of the first light adjusting layer; the first light adjusting layer comprises a first opening, and the first opening is at least partially overlapped with the light-emitting element; the second light ray adjusting structure is positioned in the second display area and on one side of the light-emitting element far away from the substrate, the second light ray adjusting structure comprises a third light ray adjusting layer and a fourth light ray adjusting layer, and the refractive index of the fourth light ray adjusting layer is larger than that of the third light ray adjusting layer; the third light adjusting layer comprises a second opening, and the second opening is at least partially overlapped with the light-emitting element; along a first direction, the thickness of the first light adjusting layer is smaller than that of the third light adjusting layer, wherein the first direction is a vertical light emitting direction of the display panel.

The design of differentiation is carried out through the first light adjustment structure to first display area and the second light adjustment structure of second display area, along display panel's perpendicular light-emitting direction, the thickness on first light adjustment layer in the first light adjustment structure is less than the thickness on third light adjustment layer in the second light adjustment structure, make the light of more large angles can be received on third light adjustment layer, and adjust large-angle light, make it along emmetropia angle direction outgoing, and then improve the light-emitting efficiency in second display area, the whole life of display panel is improved.

With the above technical solutions, the core idea of the present invention is described above, and the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Based on the embodiments of the present invention, those skilled in the art can obtain all other embodiments without making creative efforts, which all belong to the protection scope of the embodiments of the present invention.

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of a cross-section taken along a-a' in fig. 2, as shown in fig. 1 and fig. 2, a display panel 100 includes a first display area 101 and a second display area 102, where the first display area 101 at least partially surrounds the second display area 102; the display panel 100 includes: a base substrate 103; a plurality of light-emitting elements 104 located on the substrate 103 side; a first light adjusting structure 105 located in the first display region 101 and located on a side of the light emitting element 104 away from the substrate 103, wherein the first light adjusting structure 105 includes a first light adjusting layer 1051 and a second light adjusting layer 1052, and a refractive index of the second light adjusting layer 1052 is greater than a refractive index of the first light adjusting layer 1051; the first light adjustment layer 1051 includes a first opening 106, the first opening 106 at least partially overlapping the light emitting element 104; the second light adjusting structure 107 is located in the second display region 102 and on a side of the light emitting element 104 away from the substrate 103, the second light adjusting structure 107 includes a third light adjusting layer 1071 and a fourth light adjusting layer 1072, and a refractive index of the fourth light adjusting layer 1072 is greater than a refractive index of the third light adjusting layer 1071; the third light adjustment layer 1071 includes a second opening 108, the second opening 108 at least partially overlapping the light emitting element 104; the thickness of the first light adjustment layer 1051 is less than that of the third light adjustment layer 1071 along a first direction (X direction shown in the figure), wherein the first direction is a vertical light emitting direction of the display panel 100.

Wherein, first display area 101 is the normal display area in display panel 100, and second display area 102 is the screen camera district, both can realize showing and also can set up photosensitive element such as camera, light sensor, fingerprint sensor, realizes the sensitization, and then realizes formation of image, fingerprint identification's function. The display panel 100 includes a substrate 103, the substrate 103 may be a flexible substrate and a rigid substrate, and the specific material of the substrate 103 may be selected according to the actual design requirement, which is not specifically limited in the embodiment of the present invention. A plurality of light emitting elements 104 located at one side of the substrate base plate 103 are disposed in each of the first display region 101 and the second display region 102 of the display panel 100, and the light emitting elements 104 may include light emitting elements of the same color or the light emitting elements may include light emitting elements of red, green, and blue for realizing color display; the specific arrangement of the light emitting elements 104 may be selected according to actual design requirements, and the embodiment of the present invention is not limited in particular. The light adjusting structure is disposed on a side of the light emitting element 104 away from the substrate 103 to adjust an emitting angle of light emitted from the light emitting element 104, so as to meet different display requirements. In the present application, the first display region 101 is correspondingly provided with a first light adjusting structure 105, the first light adjusting structure 105 includes a first light adjusting layer 1051 and a second light adjusting layer 1052 sequentially arranged along the first direction X, the first light adjusting layer 1051 includes a first opening 106 at least partially overlapped with the light emitting element 104, the second light adjusting layer 1052 fills the first opening 106, so that the light emitted along the front viewing angle through the light emitting element 104 is directly emitted, meanwhile, the refractive index of the second light adjustment layer 1052 is adjusted to be larger than the refractive index of the first light adjustment layer 1051, large-angle light emitted from the light emitting element 104 enters the first light adjustment layer 1051 through the second light adjustment layer 1052, and part of the light is totally reflected at the interface between the first light adjustment layer 1051 and the second light adjustment layer 1052 from an optically dense medium to an optically sparse medium, and then emitted towards the front viewing angle direction, so that the light emitting efficiency under the front viewing angle is ensured. A second light adjustment structure 107 is also disposed corresponding to the second display region 102, the second light adjustment structure 107 includes a third light adjustment layer 1071 and a fourth light adjustment layer 1072, the third light adjustment layer 1071 includes a second opening 108 at least partially overlapped with the light emitting element 104, the fourth light adjustment layer 1072 fills the second opening 108, so that the light emitted along the normal viewing angle through the light emitting element 104 is directly emitted, and the refractive index of the fourth light adjustment layer 1072 is adjusted to be larger than that of the third light adjustment layer 1071, and the large-angle light emitted from the light emitting element 104 is incident to the third light adjustment layer 1071 through the fourth light adjustment layer 1072, and from the optical dense medium to the optically sparse medium, part of the light is totally reflected at the interface between the third light adjustment layer 1071 and the fourth light adjustment layer 1072 and further emitted toward the normal viewing angle, thereby ensuring the light emitting efficiency at the normal viewing angle. However, due to the difference between the functions of the first display area 101 and the second display area 102, due to the requirement of the light transmittance of the second display area 102, the arrangement density of the pixel driving circuits corresponding to the light emitting elements 104 in the second display area 102 is less, the arrangement number of the corresponding light emitting elements 104 is less, and the same driving signal is provided under the requirement of full-screen display, and the display brightness of the second display area 102 is less than that of the first display area 101. In order to ensure that the display brightness of the second display region 102 matches the brightness of the first display region 101, the first light adjustment layer 1051 in the first display region 101 is of a single-layer structure, for example, as shown in fig. 2, the third light adjustment layer 1071 in the second display region 102 may be of a single-layer structure, where the thickness of the third light adjustment layer 1071 is the thickness H of the single-layer third light adjustment layer 1071 along the first direction X. Alternatively, the third light adjustment layer 1071 in the second display region 102 may also be a multi-layer structure, for example, as shown in fig. 4, the third light adjustment layer 1071 is a two-layer structure, where the thickness of the third light adjustment layer 1071 is the sum of the thicknesses of the two layers of the third light adjustment layer 1071 along the first direction X, that is, H2+ H3. By adjusting the thickness of the first light adjustment layer 1051 in the first display area 101 to be smaller than the thickness of the third light adjustment layer 1071 in the second display area 102, the third light adjustment layer 1071 can receive more large-angle light, and the light is emitted towards the front viewing angle direction as far as possible after being totally reflected at the interface of the third light adjustment layer 1071 and the fourth light adjustment layer 1072, so that the light extraction efficiency of the second display area 102 is improved, the display brightness difference between the second display area 102 and the first display area 101 is reduced under the driving action of the same driving signal, and the whole service life of the display panel 100 is ensured.

According to the embodiment of the invention, the first light ray adjusting structure of the first display area and the second light ray adjusting structure of the second display area are designed in a differentiated manner, and the thickness of the first light ray adjusting layer in the first light ray adjusting structure is smaller than that of the third light ray adjusting layer in the second light ray adjusting structure along the first direction, so that the third light ray adjusting layer can receive more light rays with large angles, adjust the light rays with large angles and emit the light rays along the front viewing angle direction, the light emitting efficiency of the second display area is further improved, and the service life of the whole display panel is prolonged.

Optionally, fig. 3 is a schematic structural diagram of another display panel according to an embodiment of the present invention, as shown in fig. 2 and fig. 3, the fourth light adjustment layer 1072 and the third light adjustment layer 1071 do not overlap or at least partially overlap along the first direction X.

As shown in fig. 2, a third light adjustment layer 1071 and a fourth light adjustment layer 1072 are sequentially disposed along the first direction X, the fourth light adjustment layer 1072 and the third light adjustment layer 1071 are at least partially overlapped, and along the first direction X, the maximum thickness H of the fourth light adjustment layer 1072 is greater than the thickness H of the third light adjustment layer 1071, so as to ensure that light emitted from the third light adjustment layer 1071 is emitted along the normal viewing angle direction as much as possible; as shown in fig. 3, further, the third light adjustment layer 1071 and the fourth light adjustment layer 1072 may be set to be not overlapped, and along the first direction X, the thickness H of the fourth light adjustment layer 1072 is equal to the thickness H of the third light adjustment layer 1071, so that the third light adjustment layer 1071 can receive more large-angle light, and simultaneously the large-angle light is adjusted by the third light adjustment layer 1071 to be directly emitted along the front viewing angle direction as much as possible, thereby ensuring the display effect of the second display area 102, and simultaneously improving the service life of the second display area 102.

Optionally, with continued reference to fig. 2 or fig. 3, along the first direction X, the third light adjustment layer 1071 includes a first sub-light adjustment layer 109, and the fourth light adjustment layer 1072 is located on a side of the first sub-light adjustment layer 109 away from the substrate 103; the thickness H1 of the first sub light adjustment layer 109 is greater than the thickness H of the first light adjustment layer 1051 along the first direction X.

Wherein, first light adjustment layer 1051 and third light adjustment layer 1071 are the single-layer structure, third light adjustment layer 1071 only includes first sub light adjustment layer 109, through adjusting along first direction X, the thickness H of first sub light adjustment layer 109 is greater than the thickness H1 of first light adjustment layer 1051, first sub light adjustment layer 109 can carry out emergent angle to more big angle light and adjust, make it along the outgoing of elevation angle direction, guarantee the light-emitting efficiency of second display area 102, improve the display brightness of second display area 102, and then guarantee display panel 100's life.

Optionally, fig. 4 is a schematic structural diagram of another display panel according to an embodiment of the present invention, as shown in fig. 4, the third light adjustment layer 1071 includes a first sub-light adjustment layer 109 and a second sub-light adjustment layer 110 sequentially disposed along the first direction X, and along the first direction X, the thickness of the first light adjustment layer 1051 is H1, the thickness of the first sub-light adjustment layer 109 is H2, and the thickness of the second sub-light adjustment layer 110 is H3, where H1 < H2+ H3.

The third light adjustment layer 1071 in the second display area 102 may be a double-layer structure, that is, the third light adjustment layer 1071 includes a first sub-light adjustment layer 109 and a second sub-light adjustment layer 110 sequentially disposed along the first direction X, the first sub-light adjustment layer 109 and the second sub-light adjustment layer 110 may be disposed at an interval, the first sub-light adjustment layer 109 and the second sub-light adjustment layer 110 may also be sequentially stacked, and a specific disposition manner may be selected according to an actual design requirement, as shown in fig. 4, the exemplary first light adjustment structure 105 includes a first light adjustment layer 1051 disposed as a single layer, the first sub-light adjustment layer 109 and the second sub-light adjustment layer 110 are stacked and disposed along the first direction X for example, wherein, along the first direction X, a sum of a thickness H2 of the first sub-light adjustment layer 109 and a thickness H3 of the second sub-light adjustment layer 110 is greater than a thickness H1 of the first light adjustment layer 1051, compared with the adjustment of the first light adjustment layer 1051 on the large-angle light, the adjustment of the third light adjustment layer 1071 on the large-angle light with more angles is improved, and the display brightness of the second display area 102 is further improved.

Optionally, fig. 5 is a schematic structural diagram of another display panel according to an embodiment of the present invention, as shown in fig. 4 and 5, the first sub light adjustment layer 109 includes a first sub opening 1091, the second sub light adjustment layer 110 includes a second sub opening 1101, and a projection of the first sub opening 1091 and a projection of the second sub opening 1101 at least partially overlap each other along the first direction X.

Wherein, the third light adjustment layer 1071 in the second display area 102 may be a double-layer structure, the third light adjustment layer 1071 includes a first sub light adjustment layer 109 and a second sub light adjustment layer 110 sequentially arranged along the first direction X, the materials of the first sub light adjustment layer 109 and the second sub light adjustment layer 110 may be different, and the third light adjustment layer 1071 is prepared step by step, exemplarily, as shown in fig. 4, along the first direction X, the projection of the first sub opening 1091 overlaps the projection of the second sub opening 1101, that is, the projection area of the first sub opening 1091 is equal to the projection area of the second sub opening 1101, the size of the first sub opening 1091 is equal to the size of the second sub opening 1101, the projection area of the first sub light adjustment layer 109 is equal to the projection area of the second sub light adjustment layer 110, the second sub openings of the first sub opening 1091 of the first sub light adjustment layer 109 and the second sub light adjustment layer 110 may be prepared by a synchronous etching process, the process flow is simplified, and then the large-angle light emitted from the light emitting element 104 is totally reflected by the fourth light adjusting layer 1072 and the first sub-light adjusting layer 109 or by the fourth light adjusting layer 1072 and the second sub-light adjusting layer 110 in sequence, so as to adjust the light and ensure the light emitting efficiency of the second display region 102. Or, as shown in fig. 5, along the first direction X, a projection of the first sub-opening 1091 overlaps a projection of the second sub-opening 1101, a projection area of the first sub-opening 1091 is smaller than a projection area of the second sub-opening 1101, a size of the first sub-opening 1091 is smaller than a size of the second sub-opening 1101, and a projection area of the first sub-light adjustment layer 109 is larger than a projection area of the second sub-light adjustment layer 110, so that light adjusted by the first sub-light adjustment layer 109 and the second sub-light adjustment layer 110 exits along the front viewing angle direction as much as possible, and a display area of the second display area 102 is effectively ensured.

Optionally, with reference to fig. 4 or fig. 5, along the first direction X, the fourth light adjustment layer 1072 is located on the side of the third light adjustment layer 1071 away from the substrate 103, the refractive index of the first sub-light adjustment layer 109 is n1, the refractive index of the second sub-light adjustment layer 110 is n2, and the refractive index of the fourth light adjustment layer 1072 is n3, where n3 > n1 ≧ n 2.

In the second display region 102, the refractive index of the fourth light adjustment layer 1072 is greater than the refractive index of the third light adjustment layer 1071, so that the total reflection of the high-angle light emitted from the light emitting element 104 occurs at the contact interface between the fourth light adjustment layer and the third light adjustment layer 1071, and the emission angle of the high-angle light is adjusted to ensure that the light is emitted along the normal viewing angle direction as much as possible, wherein the refractive index of the first sub-light adjustment layer 109 in the third light adjustment layer 1071 can be controlled to be n1 equal to the refractive index n2 of the second sub-light adjustment layer 110, i.e. the materials of the first sub-light adjustment layer 109 and the second sub-light adjustment layer 110 are the same, or the refractive indices of the first sub-light adjustment layer 109 and the second sub-light adjustment layer 110 in the third light adjustment layer 1071 can be controlled to be different, so that the refractive index n1 of the first sub-light adjustment layer 109 is greater than the refractive index n2 of the second sub-light adjustment layer 110, the large-angle light incident on the first sub-light adjustment layer 109 and the large-angle light incident on the second sub-light adjustment layer 110 can be totally reflected and emitted in the normal viewing angle direction as much as possible, thereby effectively improving the light-emitting efficiency of the second display region 102.

Optionally, fig. 6 is a schematic structural diagram of another display panel provided in an embodiment of the invention, as shown in fig. 6, the first sub-light adjustment layer 109 includes a first sub-opening 1091 and a first sidewall 1092 close to the first sub-opening 1091, the second sub-light adjustment layer 110 includes a second sub-opening 1101 and a second sidewall 1102 close to the second sub-opening 1101, an included angle between the first sidewall 1092 and the substrate 103 is θ 1, an included angle between the second sidewall 1102 and the substrate 103 is θ 2, where θ 1 < θ 2.

Wherein the third light adjustment layer 1071 in the second display region 102 may have a double-layer structure, the third light adjustment layer 1071 includes a first sub-light adjustment layer 109 and a second sub-light adjustment layer 110 sequentially arranged along the first direction X, meanwhile, when the first sub light adjustment layer 109 and the second sub light adjustment layer 110 are made of the same material, an included angle θ 1 between the first sidewall 1092 of the first sub-light adjustment layer 109 close to the first sub-opening 1091 and the substrate 103 may be adjusted to be smaller than an included angle θ 2 between the second sidewall 1102 of the second sub-light adjustment layer 110 close to the second sub-opening 1101 and the substrate 103, when the large-angle light emitted from the light emitting element 104 passes through the first sub-light adjustment layer 109 or the second sub-light adjustment layer 110, the light can be totally reflected and emitted in the direction of the positive viewing angle as much as possible, thereby ensuring the light emitting efficiency and the display brightness of the second display region 102.

Optionally, with continued reference to fig. 4, 5, or 6, along the first direction X, the fourth light adjustment layer 1072 is located on a side of the first sub-light adjustment layer 109 away from the substrate 103, the second sub-light adjustment unit is located on a side of the fourth light adjustment layer 1072 away from the substrate 103, a refractive index of the first sub-light adjustment layer 109 is n1, a refractive index of the second sub-light adjustment layer 110 is n2, and a refractive index of the fourth light adjustment layer 1072 is n3, where n3 > n2 > n 1.

In the second display region 102, on the premise that the refractive index of the fourth light adjustment layer 1072 is greater than the refractive index of the third light adjustment layer 1071, the total reflection of the large-angle light emitted from the light emitting element 104 occurs at the contact interface between the fourth light adjustment layer 1072 and the third light adjustment layer 1071, so as to adjust the emission angle of the large-angle light, thereby ensuring that the light is emitted along the normal viewing angle as much as possible, and by controlling the refractive index n1 of the first sub-light adjustment layer 109 in the third light adjustment layer 1071 to be smaller than the refractive index n2 of the second sub-light adjustment layer 110, the total reflection of the large-angle light incident to the first sub-light adjustment layer 109 and the large-angle light incident to the second sub-light adjustment layer 110 can also occur, and the emission can be performed along the normal viewing angle direction as much as possible, thereby effectively improving the light extraction efficiency of the second display region 102.

Optionally, fig. 7 is a schematic structural diagram of another display panel according to an embodiment of the present invention, as shown in fig. 7, along the first direction X, the second sub light adjustment layer 110 includes a first surface 111 on a side away from the substrate 103, the fourth light adjustment layer 1072 includes a second surface 112 on a side away from the substrate 103 and at least partially overlapping the second opening 108, and the first surface 111 and the second surface 112 are located on the same plane.

Wherein, the third light adjustment layer 1071 includes two layers, which are respectively a first sub light adjustment layer 109 and a second sub light adjustment layer 110, and the first sub light adjustment layer 109 and the second sub light adjustment layer 110 are disposed at an interval, the first sub light adjustment layer 109 is located at a side close to the substrate 103, the second sub light adjustment layer 110 is located at a side of the first sub light adjustment layer 109 away from the substrate 103, the first sub light adjustment layer 109 and the second sub light adjustment layer 110 can adjust the emitting direction of the large-angle light, during the preparation of the second light adjustment structure 107, the first sub light adjustment layer 109 is prepared, then the fourth light adjustment layer 1072 is prepared, after the fourth light adjustment layer 1072 is etched, the second sub light adjustment layer 110 is prepared, so that the first surface 111 of the second sub light adjustment layer 110 away from the substrate 103 and the second surface 112 of the fourth light adjustment layer 1072 away from the substrate 103 are located on the same plane, after a part of the large-angle light is totally reflected at the fourth light adjustment layer 1072 and the second sub-light adjustment layer 110, the part of the large-angle light can be directly emitted along the normal viewing angle direction, so that the probability of refraction occurring again at the second surface 112 of the fourth light adjustment layer 1072 is reduced, and the light emitting angle is affected.

Optionally, with continued reference to fig. 2, 6, or 7, the third light adjustment layer 1071 includes a sidewall 113 proximate to the second opening 108, the sidewall 113 and the substrate 103 having an angle θ 3, wherein θ 3 is greater than or equal to 70 ° and less than or equal to 90 °.

The third light adjustment layer 1071 includes a sidewall 113 near the second opening 108, the sidewall 113 may be a straight edge, and an included angle between the sidewall 113 and the substrate 103 may be controlled to be 70 ° to 90 °, so as to ensure that the light emitted from the light emitting element 104 is incident from the fourth light adjustment layer 1072 with a large refractive index to the third light adjustment layer 1071 with a small refractive index, and the light is emitted in the front viewing angle direction as much as possible after the sidewall 113 is totally reflected, thereby reducing the outgoing probability of the large-angle light of the second display region 102, and improving the display brightness of the second display region 102.

Optionally, fig. 8 is a schematic structural diagram of another display panel provided in an embodiment of the present invention, as shown in fig. 8, an included angle θ 31 between a tangent of a point, which is close to one side of the substrate base 103, of any two points in the sidewall 113 and the substrate base 103 along the first direction X is greater than an included angle θ 32 between a tangent of a point, which is far from one side of the substrate base 103, of the sidewall 113 and the substrate base 103.

As shown in fig. 8, the third light adjustment layer 1071 includes a sidewall 113 close to the second opening 108, the sidewall 113 may also be configured as an arc edge, so as to ensure that the large-angle light is reflected totally at the third light adjustment layer 1071 to obtain an angle of incidence, and thus, along the first direction X, an included angle θ 31 between a tangent of a point of the sidewall 113 close to one side of the substrate 103 and the substrate 103 is greater than an included angle θ 32 between a tangent of a point of the sidewall 113 far from one side of the substrate 103 and the substrate 103, and a curvature of the sidewall 113 is gradually reduced to ensure that the light is emitted out along the front view angle direction as much as possible after the sidewall 113 of the third light adjustment layer 1071 is totally reflected, thereby improving the light extraction efficiency of the second display area 102.

Optionally, fig. 9 is a schematic structural diagram of another display panel according to an embodiment of the present invention, and as shown in fig. 9, the second light adjustment layer 1052 and the fourth light adjustment layer 1072 are integrally disposed.

In the manufacturing process of the display panel 100, after the first light adjustment layer 1051 of the first display area 101 and the third light adjustment layer 1071 of the second display area 102 are prepared, the second light adjustment layer 1052 and the fourth light adjustment layer 1072 are prepared on the same layer, and at this time, the second light adjustment layer 1052 and the fourth light adjustment layer 1072 may be made of the same material, so that the second light adjustment layer 1052 and the fourth light adjustment layer 1072 are of an integrated structure, thereby effectively simplifying the process flow and reducing the manufacturing cost.

Alternatively, fig. 10 is a schematic structural diagram of a second display region according to an embodiment of the present invention, as shown in fig. 10, the light emitting element 104 at least includes a red light emitting element 1041, a green light emitting element 1042 and a blue light emitting element 1043, the third light adjusting layer 1071 at least includes a first light adjusting sub-section 114, a second light adjusting sub-section 115 and a third light adjusting sub-section 116, the first light adjusting sub-section 114 includes a first aperture sub-section 1141, the second light adjusting sub-section 115 includes a second aperture sub-section 1151 and the third light adjusting sub-section 116 includes a third aperture sub-section 1161, the red light emitting element 1041 at least partially overlaps with the first aperture sub-section 1141, the green light emitting element 1042 at least partially overlaps with the second aperture sub-section 1151, the blue light emitting element 1043 at least partially overlaps with the third aperture sub-section 1161 along the first direction X, the first light adjusting sub-section 114 has a thickness h1, the second light adjusting sub-section 115 has a thickness h2, and the third light adjusting sub-section 1161 has a thickness h2, The third light adjustment subsection 116 has a thickness h3, wherein h3 < h1 < h 2.

Wherein, to realize normal display of the display panel 100, the light emitting elements 104 may include a red light emitting element 1041, a green light emitting element 1042, and a blue light emitting element 1043, and a third light adjustment layer 1071 and a fourth light adjustment layer 1072 are sequentially disposed along the first direction X, and light emitting elements of different colors correspond to different third light adjustment layers 1071, so that the third light adjustment layer 1071 includes a first light adjustment subsection 114 disposed corresponding to the red light emitting element 1041, a second light adjustment subsection 115 disposed corresponding to the green light emitting element 1042, and a third light adjustment subsection 116 disposed corresponding to the blue light emitting element 1043, and the first light adjustment subsection 114 includes a first opening subsection 1141 for red light emitted from the red light emitting element 1041 along the normal viewing angle direction to be emitted from the first opening subsection 1141, and the second light adjustment subsection 115 includes a second opening subsection 1151 for green light emitted from the green light emitting element 1042 along the normal viewing angle direction to be emitted from the second opening subsection 1151, the third light adjustment branch 116 includes a third opening branch 1161, so that the blue light emitted from the blue light emitting device 1043 in the normal viewing angle direction is emitted from the third opening branch 1161. In the second display area 102, the light emitting areas of the different color light emitting areas are the same, and the light emitting luminances of the different color light emitting areas are different, as shown in fig. 10, when the third light adjustment layer 1071 is a layer, the thickness h2 of the second light adjustment subsection 115 of the green light emitting element 1042 can be adjusted to be greater than the thickness h1 of the first light adjustment subsection 114 of the red light emitting element 1041, the thickness h1 of the first light adjustment subsection 114 of the red light emitting element 1041 is greater than the thickness h3 of the third light adjustment subsection 116 of the blue light emitting element 1043, and the light emitting luminance of the green light emitting area is greater than the light emitting luminance of the red light emitting area, and the light emitting luminance of the red light emitting area is greater than the light emitting luminance of the blue light emitting area by adjusting the third light adjustment layer 1071 of the different color area to the large angle light, so as to improve the overall display effect of the second display area 102.

Optionally, fig. 11 is a schematic structural diagram of another display panel according to an embodiment of the present invention, as shown in fig. 11, the display panel 100 includes a third display area 117, the third display area 117 at least partially surrounds the second display area 102, the first display area 101 at least partially surrounds the third display area 117, the third display area 117 includes a third light adjusting structure 118, and the third light adjusting structure 118 is located on a side of the light emitting element 104 away from the substrate 103; the third light adjusting structure 118 includes a fifth light adjusting layer 1181 and a sixth light adjusting layer 1182, wherein the refractive index of the fifth light adjusting layer 1181 is greater than the refractive index of the sixth light adjusting layer 1182; the fifth light adjustment layer 1181 includes a third opening 119, and the third opening 119 at least partially overlaps with the light emitting element 104; along the first direction X, the thickness of the first light adjustment layer 1051 is H1, the thickness of the third light adjustment layer 1071 is H4, and the thickness of the fifth light adjustment layer 1181 is H5, wherein H1 < H5 < H4.

In order to ensure the overall display effect of the display panel 100, the display panel 100 includes a third display area 117, the third display area 117 is a transition area, the third display area 117 surrounds a second display area 102, the first display area 101 surrounds the third display area 117, the third display area 117 includes a third light adjustment structure 118, the third light adjustment structure 118 is located on a side of the light emitting element 104 away from the substrate 103, the third light adjustment structure 118 includes a fifth light adjustment layer 1181 and a sixth light adjustment layer 1182 sequentially arranged along the first direction X, a refractive index of the fifth light adjustment layer 1181 is greater than a refractive index of the sixth light adjustment layer 1182, the fifth light adjustment layer 1181 may be a single-layer structure or a double-layer structure, the fifth light adjustment layer 1181 is shown as a single-layer structure and the third light adjustment layer 1071 is shown as a single-layer structure in fig. 11, the fifth light adjustment layer 1181 includes a third opening 119, the third opening 119 is at least partially overlapped with the light emitting element 104, and the third opening 119 is filled with the sixth light adjusting layer 1182, so that the normal-view-angle light emitted by the light emitting element 104 is directly emitted, and for the high-angle light emitted by the light emitting element 104, the high-angle light is totally reflected after being incident to the fifth light adjusting layer 1181 through the sixth light adjusting layer 1182, and the adjustment of the high-angle light is further ensured; because the pixel densities of different display regions are different, in order to ensure that the display effects of different display regions under the same driving signal are the same, light emitted from different display regions needs to be correspondingly adjusted, so as to ensure the display effects of different display regions, along the first direction X, the thickness H1 of the first light adjustment layer 1051 is smaller than the thickness H5 of the fifth light adjustment layer 1181, and the thickness H5 of the fifth light adjustment layer 1181 is smaller than the thickness H4 of the third light adjustment layer 1071, so that the adjustment abilities of the first light adjustment layer 1051, the third light adjustment layer 1071, and the fifth light adjustment layer 1181 to large-angle light are gradually increased, and the light extraction efficiency of the second display region 102 is effectively improved.

Optionally, fig. 12 is a schematic structural diagram of another display panel according to an embodiment of the present invention, as shown in fig. 12, along the first direction X, the fifth light adjustment layer 1181 includes a third sub-light adjustment layer 1183, and the sixth light adjustment layer 1182 is located on a side of the third sub-light adjustment layer 1183 away from the substrate 103; along the first direction X, the thickness H6 of the third sub light ray adjustment layer 1183 is greater than the thickness H1 of the first light ray adjustment layer 1051, and the thickness H6 of the third sub light ray adjustment layer 1183 is less than the thickness H4 of the third light ray adjustment layer 1071.

Wherein, the fifth light adjustment layer 1181 in the third display area 117 is a single-layer structure, the fifth light adjustment layer 1181 includes a third sub-light adjustment layer 1183, the third light adjustment layer 1071 in the second display area 102 is a double-layer structure, the third light adjustment layer 1071 includes the first sub-light adjustment layer 109 and the second sub-light adjustment layer 110, further the thickness H6 of the third sub-light adjustment layer 1183 is greater than the thickness H1 of the first light adjustment layer 1051, the thickness H6 of the third sub-light adjustment layer 1183 is less than the sum of the thickness H2 of the first sub-light adjustment layer 109 and the thickness H3 of the second sub-light adjustment layer 110, further the adjustment abilities of the first display area 101, the third display area 117 and the second display area 102 to the large-angle light are sequentially enhanced, so that the adjusted large-angle light is emitted along the normal viewing angle light as much as possible, and simultaneously the densities of the pixels of the first display area 101, the third display area 117 and the second display area 102 are sequentially reduced, the display brightness of the first display area 101, the second display area 102 and the third display area 117 are similar, and the overall display effect and the service life of the display panel 100 are ensured.

Optionally, fig. 13 is a schematic structural diagram of another display panel according to an embodiment of the present invention, as shown in fig. 13, the fifth light adjustment layer includes a third sub-light adjustment layer 1183 and a fourth sub-light adjustment layer 1184 along the first direction X, a thickness of the third sub-light adjustment layer 1183 is H6, a thickness of the fourth sub-light adjustment layer 1184 is H7, a thickness of the first light adjustment layer 1051 is H1, and a thickness of the third light adjustment layer 1071 is H4, where H1 < H6+ H7 < H4.

As shown in fig. 13, for example, along the first direction X, the third light adjustment layer 1071 may be configured as a two-layer structure, the third light adjustment layer 1071 includes the first sub-light adjustment layer 109 and the second sub-light adjustment layer 110, the fifth light adjustment layer 1181 may also be configured as a two-layer structure, the fifth light adjustment layer 1181 includes the third sub-light adjustment layer 1183 and the fourth sub-light adjustment layer 1184, the first light adjustment layer 1051 is configured as a single-layer structure, the thickness H2 of the first sub-light adjustment layer 109 on the side of the third light adjustment layer 1071 close to the substrate 103, the thickness H6 of the third sub-light adjustment layer 1183 on the side of the fifth light adjustment layer 1181 close to the substrate 103 are all the same as the thickness H1 of the first light adjustment layer 1051, the thickness H3 of the second sub-light adjustment layer 110 on the side of the third light adjustment layer 1071 far from the substrate 103 is greater than the thickness H7 of the fourth sub-light adjustment layer 1184 on the side of the fifth light adjustment layer 1181 far from the substrate 103, similarly, the adjustment capability of the first light adjustment layer 1051, the fifth light adjustment layer 1181, and the third light adjustment layer 1071 on the large-angle light can be gradually increased, the light extraction efficiency of the second display area 102 and the third display area 117 can be effectively improved, and the overall display brightness of the display panel 100 can be further ensured.

Optionally, with continued reference to fig. 11, the refractive index of the first light ray adjustment layer 1051 is n4, the refractive index of the third light ray adjustment layer 1071 is n5, and the refractive index of the fifth light ray adjustment layer is n6, where n5 ≦ n6 ≦ n 4.

On the premise that the thicknesses of the first light adjustment layer 1051, the second light adjustment layer 1052 and the third light adjustment layer 1071 are gradually increased, the refractive index n4 of the first light adjustment layer 1051, the refractive index n5 of the third light adjustment layer 1071 and the refractive index n6 of the fifth light adjustment layer can be the same, that is, the light adjustment layers are made of the same material and can be made in the same layer, so that the process flow is effectively simplified; on the premise that the thicknesses of the first light adjustment layer 1051, the second light adjustment layer 1052 and the third light adjustment layer 1071 are gradually increased, the refractive index n4 of the first light adjustment layer 1051, the refractive index n5 of the third light adjustment layer 1071 and the refractive index n6 of the fifth light adjustment layer are adjusted to be different, so that total reflection is more easily generated between the third light adjustment layer 1071 and the fourth light adjustment layer 1072 in the second display area 102, and high-angle light is more easily emitted in the normal viewing angle direction after being adjusted by the third light adjustment layer 1071, so that the light extraction efficiency of the second display area 102 is ensured.

Fig. 14 is a schematic structural diagram of a display device according to an embodiment of the present invention, and as shown in fig. 14, the display device 200 includes the display panel 100 according to the embodiment.

It should be noted that, since the display device provided in the present embodiment has the same or corresponding advantages as the display panel 100 of the foregoing embodiment, details are not repeated herein. The display device 200 provided in the embodiment of the present invention may be a mobile phone shown in fig. 14, and may also be any electronic product with a display function, including but not limited to the following categories: the touch screen display system comprises a television, a notebook computer, a desktop display, a tablet computer, a digital camera, an intelligent bracelet, intelligent glasses, a vehicle-mounted display, medical equipment, industrial control equipment, a touch interaction terminal and the like, and the embodiment of the invention is not particularly limited in this respect.

The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A display panel comprising a first display region and a second display region, the first display region at least partially surrounding the second display region;

the display panel includes:

a substrate base plate;

the first light adjusting structure is positioned in the first display area and on one side, far away from the substrate, of the light emitting element, and comprises a first light adjusting layer and a second light adjusting layer, wherein the refractive index of the second light adjusting layer is larger than that of the first light adjusting layer; the first light adjustment layer comprises a first opening, and the first opening is at least partially overlapped with the light-emitting element;

along a first direction, the thickness of the first light ray adjusting layer is smaller than that of the third light ray adjusting layer, wherein the first direction is a vertical light emitting direction of the display panel.

2. The display panel of claim 1 wherein the fourth light management layer does not overlap or at least partially overlaps the third light management layer along the first direction.

3. The display panel according to claim 1, wherein the third light adjustment layer comprises a first sub-light adjustment layer along the first direction, and the fourth light adjustment layer is located on a side of the first sub-light adjustment layer away from the substrate;

along the first direction, the thickness of the first sub-light adjustment layer is larger than that of the first light adjustment layer.

4. The display panel of claim 1, wherein the third light adjustment layer comprises a first sub-light adjustment layer and a second sub-light adjustment layer sequentially arranged along the first direction, and the thickness of the first light adjustment layer along the first direction is H1, the thickness of the first sub-light adjustment layer is H2, and the thickness of the second sub-light adjustment layer is H3, wherein H1 < H2+ H3.

5. The display panel of claim 4, wherein the first sub light adjustment layer comprises a first sub opening, and the second sub light adjustment layer comprises a second sub opening, and a projection of the first sub opening at least partially overlaps a projection of the second sub opening along the first direction.

6. The display panel of claim 4, wherein along the first direction, the fourth light adjustment layer is located on a side of the third light adjustment layer away from the substrate, a refractive index of the first sub-light adjustment layer is n1, a refractive index of the second sub-light adjustment layer is n2, and a refractive index of the fourth light adjustment layer is n3, wherein n3 > n1 ≧ n 2.

7. The display panel according to claim 4, wherein the first sub-light adjustment layer comprises a first sub-opening and a first sidewall adjacent to the first sub-opening, the second sub-light adjustment layer comprises a second sub-opening and a second sidewall adjacent to the second sub-opening, an included angle between the first sidewall and the substrate base plate is θ 1, an included angle between the second sidewall and the substrate base plate is θ 2, and θ 1 < θ 2.

8. The display panel according to claim 4, wherein along the first direction, the fourth light ray adjustment layer is located on a side of the first sub light ray adjustment layer away from the substrate, the second sub light ray adjustment unit is located on a side of the fourth light ray adjustment layer away from the substrate, a refractive index of the first sub light ray adjustment layer is n1, a refractive index of the second sub light ray adjustment layer is n2, and a refractive index of the fourth light ray adjustment layer is n3, wherein n3 > n2 > n 1.

9. The display panel of claim 8, wherein along the first direction, the second sub light adjustment layer comprises a first surface far away from the substrate side, and the fourth light adjustment layer comprises a second surface far away from the substrate side and at least partially overlapping the second opening, and the first surface and the second surface are located on the same plane.

10. The display panel of claim 1, wherein the third light adjusting layer comprises a sidewall adjacent to the second opening, the sidewall forming an angle θ 3 with the substrate base plate, wherein θ 3 is greater than or equal to 70 ° and less than or equal to 90 °.

11. The display panel according to claim 10, wherein, along the first direction, an included angle between a tangent line of a point of any two points of the sidewall close to one side of the substrate base plate and the substrate base plate is larger than an included angle between a tangent line of a point of the sidewall far from one side of the substrate base plate and the substrate base plate.

12. The display panel of claim 1, wherein the second light adjusting layer and the fourth light adjusting layer are integrally disposed.

13. The display panel according to claim 1, wherein the light emitting elements include at least a red light emitting element, a green light emitting element, and a blue light emitting element, the third light adjusting layer includes at least a first light adjusting subsection, a second light adjusting subsection, and a third light adjusting subsection, the first light adjusting subsection includes a first opening subsection, the second light adjusting subsection includes a second opening subsection, and the third light adjusting subsection includes a third opening subsection, the red light emitting element at least partially overlaps the first opening subsection in the first direction, the green light emitting element at least partially overlaps the second opening subsection, the blue light emitting element at least partially overlaps the third opening subsection, the first light adjusting subsection has a thickness h1, and the second light adjusting subsection has a thickness h2, The thickness of the third light adjustment subsection is h3, wherein h3 < h1 < h 2.

14. The display panel according to claim 1, wherein the display panel comprises a third display area, the third display area at least partially surrounds the second display area, the first display area at least partially surrounds the third display area, the third display area comprises a third light adjusting structure, and the third light adjusting structure is located on a side of the light emitting element away from the substrate;

the third light ray adjusting structure comprises a fifth light ray adjusting layer and a sixth light ray adjusting layer, and the refractive index of the fifth light ray adjusting layer is greater than that of the sixth light ray adjusting layer; the fifth light adjustment layer comprises a third opening, and the third opening is at least partially overlapped with the light-emitting element;

along the first direction, the thickness of the first light ray adjustment layer is H1, the thickness of the third light ray adjustment layer is H4, and the thickness of the fifth light ray adjustment layer is H5, wherein H1 is more than H5 and more than H4.

15. The display panel of claim 14, wherein along the first direction, the fifth light adjustment layer comprises a third sub-light adjustment layer, and the sixth light adjustment layer is located on a side of the third sub-light adjustment layer away from the substrate;

along the first direction, the thickness of the third sub light ray adjusting layer is larger than that of the first light ray adjusting layer, and the thickness of the third sub light ray adjusting layer is smaller than that of the third light ray adjusting layer.

16. The display panel of claim 14, wherein along the first direction, the fifth light adjustment layer comprises a third sub-light adjustment layer and a fourth sub-light adjustment layer;

along the first direction, the thickness of the third sub light ray adjustment layer is H6, the thickness of the fourth sub light ray adjustment layer is H7, the thickness of the first light ray adjustment layer is H1, and the thickness of the third light ray adjustment layer is H4, wherein H1 < H6+ H7 < H4.

17. The display panel according to claim 14, wherein the refractive index of the first light ray adjustment layer is n4, the refractive index of the third light ray adjustment layer is n5, and the refractive index of the fifth light ray adjustment layer is n6, wherein n5 ≦ n6 ≦ n 4.

18. A display device characterized by comprising the display panel according to any one of claims 1 to 17.