CN115036437A - A display panel and display device - Google Patents

Abstract

The invention discloses a display panel and a display device. The display panel includes 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 includes a first light adjustment structure, and the first light adjustment structure includes a first light adjustment layer and a second light adjustment layer. a light adjustment layer, the refractive index of the second light adjustment layer is greater than that of the first light adjustment layer; the second display area includes a second light adjustment structure, and the second light adjustment structure includes a third light adjustment layer and a fourth light adjustment layer , the refractive index of the fourth light adjustment layer is greater than the refractive index of the third light adjustment layer, and along the vertical light exit direction of the display panel, adjust the thickness of the first light adjustment layer to be smaller than the thickness of the third light adjustment layer, so that the third light adjustment layer is located in the third light adjustment layer. The layer can receive more large-angle light, and adjust its light-emitting angle, improve the light-emitting efficiency of the front view angle of the second display area, and ensure the overall service life of the display panel.

Description

A display panel and display device

technical field

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

Background technique

With the rapid development of terminal equipment, more and more electronic devices with display function are widely used in people's daily life and work, which brings great convenience to people's daily life and work, and it has become an indispensable part of today's people. An important tool is missing.

Electronic devices with under-screen camera technology have gradually become the focus of attention. The area where the screen camera is located is a light-transmitting and displayable screen, but the area where the screen camera is located is different from the normal display area in terms of display and service life, which reduces the user experience. sense.

SUMMARY OF THE INVENTION

The invention provides a display panel and a display device to improve the light extraction efficiency of the second display area and improve the service life.

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

The display panel includes:

substrate substrate;

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

The first light adjustment structure is located in the first display area and on the side of the light-emitting element away from the base substrate, the first light adjustment structure includes a first light adjustment layer and a second light adjustment layer, so The refractive index of the second light adjustment layer is greater than the refractive index of the first light adjustment layer; the first light adjustment layer includes a first opening, and the first opening at least partially overlaps the light-emitting element;

The second light adjustment structure is located in the second display area and on the side of the light-emitting element away from the base substrate. The second light adjustment structure includes a third light adjustment layer and a fourth light adjustment layer. The refractive index of the fourth light adjustment layer is greater than the refractive index of the third light adjustment layer; the third light adjustment layer includes a second opening, and the second opening at least partially overlaps the light-emitting element;

Along the first direction, the thickness of the first light adjustment layer is smaller than the thickness of the third light adjustment layer, wherein the first direction is the vertical light exit direction of the display panel.

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

According to the technical solution of the embodiment of the present invention, the display panel includes 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 includes a first light adjustment structure, and the first light adjustment structure It includes a first light adjustment layer and a second light adjustment layer, and the refractive index of the second light adjustment layer is greater than that of the first light adjustment layer; the second display area includes a second light adjustment structure, and the second light adjustment structure includes a third light adjustment layer. A light adjustment layer and a fourth light adjustment layer, the refractive index of the fourth light adjustment layer is greater than that of the third light adjustment layer, and along the vertical light exit direction of the display panel, the thickness of the first light adjustment layer is adjusted to be smaller than that of the third light adjustment layer The thickness of the third light adjustment layer enables the third light adjustment layer to receive more light from a large angle, and adjust the light output angle to improve the light output brightness of the front viewing angle of the second display area and ensure the use effect of the display panel.

It should be understood that the content described in this section is not intended to identify key or critical features of the embodiments of the invention, nor is it intended to limit the scope of the invention. Other features of the present invention will become readily understood from the following description.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

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

Fig. 2 is the cross-sectional structure schematic diagram along A-A' in 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 present invention;

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 present invention;

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 present invention;

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

Detailed ways

In order to make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Embodiments are part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

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

Through the differential design of the first light adjustment structure in the first display area and the second light adjustment structure in the second display area, along the vertical light exit direction of the display panel, the thickness of the first light adjustment layer in the first light adjustment structure The thickness of the third light adjustment layer in the second light adjustment structure is smaller than that of the third light adjustment layer, so that the third light adjustment layer can receive more large-angle light, and adjust the large-angle light to emit along the front viewing angle direction, thereby improving the The light extraction efficiency of the second display area improves the overall service life of the display panel.

With the above technical solutions, the above is the core idea of the present invention, and the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work fall within the protection scope of the embodiments of the present invention.

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 AA' in FIG. 2 . As shown in FIGS. 1 and 2 , the display panel 100 includes a first display area 101 and the second display area 102, 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 one side of the base substrate 103; a first light adjustment The structure 105 is located in the first display area 101 and located on the side of the light-emitting element 104 away from the base substrate 103. The first light adjustment structure 105 includes a first light adjustment layer 1051 and a second light adjustment layer 1052, and the second light adjustment layer 1052 The refractive index of the first light adjustment layer 1051 is greater than that of the first light adjustment layer 1051; the first light adjustment layer 1051 includes a first opening 106, and the first opening 106 at least partially overlaps the light-emitting element 104; the second light adjustment structure 107 is located in the second display The region 102 is located on the side of the light-emitting element 104 away from the base substrate 103. The second light adjusting structure 107 includes a third light adjusting layer 1071 and a fourth light adjusting layer 1072. The refractive index of the fourth light adjusting layer 1072 is greater than that of the third light Adjusting the refractive index of the layer 1071; the third light adjusting layer 1071 includes a second opening 108 that at least partially overlaps the light emitting element 104; along the first direction (X direction shown in the figure), the first light adjusting The thickness of the layer 1051 is smaller than the thickness of the third light adjustment layer 1071 , wherein the first direction is the vertical light exit direction of the display panel 100 .

Among them, the first display area 101 is the normal display area in the display panel 100, and the second display area 102 is the screen camera area, which can be used for display or can be provided with photosensitive elements such as cameras, light sensors, fingerprint sensors, etc., to achieve light sensitivity. And then realize the functions of imaging and fingerprint recognition. The display panel 100 includes a base substrate 103. The base substrate 103 may be a flexible base substrate or a rigid base substrate. The specific material of the base substrate 103 may be selected according to actual design requirements, which is not specifically limited in this embodiment of the present invention. . The first display area 101 and the second display area 102 of the display panel 100 are both provided with a plurality of light-emitting elements 104 located on one side of the base substrate 103, and the light-emitting elements 104 may include light-emitting elements of the same color or may include red light-emitting elements. The light emitting element, the green light emitting element and the blue light emitting element are used to realize color display; the specific arrangement of the light emitting element 104 can be selected according to actual design requirements, which is not specifically limited in the embodiment of the present invention. Disposing the light adjusting structure on the side of the light emitting element 104 away from the base substrate 103 can adjust the exit angle of the light emitted by the light emitting element 104 to meet different display requirements. In the present application, the first display area 101 is correspondingly provided with a first light adjustment structure 105. The first light adjustment structure 105 includes a first light adjustment layer 1051 and a second light adjustment layer 1052 arranged in sequence along the first direction X. The adjustment layer 1051 includes a first opening 106 that at least partially overlaps with the light-emitting element 104 , and the second light-adjusting layer 1052 fills the first opening 106 , so that the light emitted from the light-emitting element 104 along the frontal viewing angle directly exits, while adjusting the second light adjustment The refractive index of the layer 1052 is greater than the refractive index of the first light adjustment layer 1051, and the large-angle light emitted from the light-emitting element 104 enters the first light adjustment layer 1051 through the second light adjustment layer 1052, from the optically denser medium to the optically sparser medium, part of the The light will be totally reflected at the interface between the first light adjustment layer 1051 and the second light adjustment layer 1052 , and then exit in the direction of the frontal viewing angle, so as to ensure the light extraction efficiency under the frontal viewing angle. Corresponding to the second display area 102, a second light adjustment structure 107 is also disposed. 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 at least part of the light emitting element 104 The overlapping second openings 108 and the fourth light adjustment layer 1072 fill the second openings 108, so that the light emitted from the light emitting element 104 along the front view angle directly exits, and the refractive index of the fourth light adjustment layer 1072 is adjusted to be greater than that of the third light adjustment The refractive index of the layer 1071, the large-angle light emitted from the light-emitting element 104 enters the third light adjustment layer 1071 through the fourth light adjustment layer 1072. The interface of the fourth light adjustment layer 1072 is totally reflected, and then emits toward the front viewing angle direction, so as to ensure the light extraction efficiency under the front viewing angle. However, due to the difference in the functions of the first display area 101 and the second display area 102, and due to the light transmittance requirements 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 number of corresponding light-emitting elements 104 is relatively small. Under the requirement of full-screen display, the same driving signal is provided, and the display brightness of the second display area 102 is lower than that of the first display area 101 . In order to ensure that the display brightness of the second display area 102 matches the brightness of the first display area 101, the first light adjustment layer 1051 in the first display area 101 has a single-layer structure. The third light adjusting layer 1071 in the region 102 may have a single-layer structure, and the thickness of the third light adjusting layer 1071 is the thickness H of the single-layer third light adjusting layer 1071 along the first direction X. Alternatively, the third light adjustment layer 1071 in the second display area 102 may also have a multi-layer structure. For example, as shown in FIG. 4 , the third light adjustment layer 1071 has a two-layer structure. At this time, the thickness of the third light adjustment layer 1071 is Along the first direction X, the sum of the thicknesses of the double-layered third light adjusting layers 1071 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 After the total reflection occurs at the interface between the third light adjustment layer 1071 and the fourth light adjustment layer 1072, the light is emitted toward the front viewing angle direction as much as possible to improve the light extraction efficiency of the second display area 102. Under the driving action of the same driving signal , reducing the display brightness difference between the second display area 102 and the first display area 101 to ensure the overall service life of the display panel 100 .

In the embodiment of the present invention, the first light adjustment structure in the first display area and the second light adjustment structure in the second display area are designed differently. Along the first direction, the first light adjustment layer in the first light adjustment structure has The thickness is smaller than the thickness of the third light adjustment layer in the second light adjustment structure, so that the third light adjustment layer can receive more large-angle light, and adjust the large-angle light so that it is emitted along the front viewing angle direction, and then The light extraction efficiency of the second display area is improved, and the overall service life of the display panel is improved.

Optionally, FIG. 3 is a schematic structural diagram of another display panel provided by an embodiment of the present invention. As shown in FIGS. 2 and 3 , along the first direction X, the fourth light adjustment layer 1072 and the third light adjustment layer 1071 Do not overlap or at least partially overlap.

Wherein, as shown in FIG. 2, along the first direction X, the third light adjustment layer 1071 and the fourth light adjustment layer 1072 are arranged in sequence, and the fourth light adjustment layer 1072 and the third light adjustment layer 1071 are at least partially overlapped. In one 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 the light emitted by the third light adjustment layer 1071 is emitted along the front 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 can be set not to overlap, 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 first The three light adjustment layers 1071 can receive more large-angle light, and at the same time, the large-angle light is adjusted by the third light adjustment layer 1071 to directly exit along the front viewing angle direction as much as possible, so as to ensure the display effect of the second display area 102 and improve the second The service life of the display area 102 .

Optionally, continue referring to FIG. 2 or FIG. 3, along the first direction X, the third light adjustment layer 1071 includes the first sub-light adjustment layer 109, and the fourth light adjustment layer 1072 is located in the first sub-light adjustment layer 109 away from the substrate. One side of the substrate 103 ; along the first direction X, the thickness H1 of the first sub-light adjustment layer 109 is greater than the thickness H of the first light adjustment layer 1051 .

The first light adjustment layer 1051 and the third light adjustment layer 1071 are both single-layer structures, and the third light adjustment layer 1071 only includes the first sub-ray adjustment layer 109. By adjusting along the first direction X, the first sub-beam adjusts The thickness H of the layer 109 is greater than the thickness H1 of the first light adjustment layer 1051 , and the first sub-light adjustment layer 109 can adjust the exit angle of more large-angle light rays, so that they exit in the direction of the front viewing angle, so as to ensure the lightness of the second display area 102. The light extraction efficiency improves the display brightness of the second display area 102 , thereby ensuring the service life of the display panel 100 .

Optionally, FIG. 4 is a schematic structural diagram of another display panel provided by an embodiment of the present invention. As shown in FIG. 4 , the third light adjustment layer 1071 includes first sub-light adjustment layers 109 arranged in sequence along the first direction X and the second sub-ray adjustment layer 110, along the first direction X, the thickness of the first sub-ray adjustment layer 1051 is H1, the thickness of the first sub-ray adjustment layer 109 is H2, the thickness of the second sub-ray adjustment layer 110 is H3, Among them, H1<H2+H3.

The third light adjustment layer 1071 located in the second display area 102 may have a double-layer structure, that is, the third light adjustment layer 1071 includes the first sub-ray adjustment layer 109 and the second sub-ray adjustment layer 109 arranged in sequence along the first direction X The layer 110, the first sub-ray adjustment layer 109 and the second sub-ray adjustment layer 110 can be arranged at intervals, and the first sub-ray adjustment layer 109 and the second sub-ray adjustment layer 110 can also be stacked in sequence, and the specific setting method can be based on the actual design. According to the requirements, as shown in FIG. 4 , the exemplary first light adjustment structure 105 includes a single-layer first light adjustment layer 1051 , the first sub-light adjustment layer 109 and the second sub-light adjustment layer 110 along the first light adjustment layer 105 . The stacking arrangement in the direction X is shown as an example, wherein, along the first direction X, the sum of the thickness H2 of the first sub-ray adjusting layer 109 and the thickness H3 of the second sub-ray adjusting layer 110 is greater than the thickness H1 of the first light adjusting layer 1051 , compared with the adjustment of the large-angle light by the first light adjustment layer 1051 , the adjustment of the large-angle light of more angles by the third light adjustment layer 1071 is improved, thereby improving the display brightness of the second display area 102 .

Optionally, FIG. 5 is a schematic structural diagram of another display panel provided by an embodiment of the present invention. As shown in FIGS. 4 and 5 , the first sub-light adjustment layer 109 includes a first sub-opening 1091, and the second sub-light adjustment layer 110 includes a second sub-opening 1101, and along the first direction X, the projection of the first sub-opening 1091 and the projection of the second sub-opening 1101 at least partially overlap.

The third light adjustment layer 1071 located in the second display area 102 may have a double-layer structure, and the third light adjustment layer 1071 includes a first sub-light adjustment layer 109 and a second sub-light adjustment layer arranged in sequence along the first direction X 110. The materials of the first sub-ray adjustment layer 109 and the second sub-ray adjustment layer 110 may be different, and are obtained by step-by-step preparation. Exemplarily, as shown in FIG. The projection overlaps with the projection of the second sub-opening 1101 , that is, the projected area of the first sub-opening 1091 is equal to the projected area of the second sub-opening 1101 , the size of the first sub-opening 1091 is the same as the size of the second sub-opening 1101 , the first sub-opening 1091 The projected area of the light adjusting layer 109 is the same as the projected area of the second sub light adjusting layer 110 , the first sub opening 1091 of the first sub light adjusting layer 109 and the second sub opening 1101 of the second sub light adjusting layer 110 can be etched simultaneously It can be prepared by etching process, which simplifies the process preparation process, and the large-angle light emitted from the light-emitting element 104 sequentially passes through the fourth light adjustment layer 1072 and the first sub-light adjustment layer 109 or sequentially passes through the fourth light adjustment layer 1072 and the second sub-light adjustment layer The layer 110 undergoes total reflection to adjust the light to ensure the light extraction efficiency of the second display area 102 . Alternatively, as shown in FIG. 5 , along the first direction X, the projection of the first sub-opening 1091 partially overlaps with the projection of the second sub-opening 1101 , and the projected area of the first sub-opening 1091 is smaller than the projected area of the second sub-opening 1101 , The size of the first sub-opening 1091 is smaller than the size of the second sub-opening 1101, and the projected area of the first sub-ray adjustment layer 109 is larger than the projected area of the second sub-ray adjustment layer 110, so that the first sub-ray adjustment layer 109 and the second sub-ray adjustment layer The light adjusted by the sub-light adjustment layer 110 is emitted along the front viewing angle direction as much as possible, while effectively ensuring the display area of the second display area 102 .

Optionally, continue referring 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 base substrate 103, and the refractive index of the first sub-ray adjustment layer 109 is n1, the refractive index of the second sub-ray adjustment layer 110 is n2, and the refractive index of the fourth light adjustment layer 1072 is n3, where n3>n1≥n2.

Wherein, in the second display area 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 large-angle light emitted by the light-emitting element 104 is adjusted between the four light adjustment layers and the third light adjustment layer. The total reflection occurs at the contact interface of the layer 1071, and then the exit angle of the large-angle light is adjusted to ensure that the light exits along the front viewing angle direction as much as possible, wherein the refraction of the first sub-ray adjustment layer 109 in the third light adjustment layer 1071 can be controlled The ratio n1 is equal to the refractive index n2 of the second sub-ray adjustment layer 110, that is, the materials of the first sub-ray adjustment layer 109 and the second sub-ray adjustment layer 110 are the same, or the first sub-ray adjustment layer in the third sub-ray adjustment layer 1071 can be controlled The refractive index of the light adjusting layer 109 and the second sub-ray adjusting layer 110 are different, so that the refractive index n1 of the first sub-ray adjusting layer 109 is greater than the refractive index n2 of the second sub-ray adjusting layer 110, and the incident light entering the first sub-ray adjusting The large-angle light rays of the layer 109 and the large-angle light rays incident to the second sub-ray adjustment layer 110 can be totally reflected and emitted along the front viewing angle direction as much as possible, thereby effectively improving the light extraction efficiency of the second display area 102 .

Optionally, FIG. 6 is a schematic structural diagram of another display panel according to an embodiment of the present invention. As shown in FIG. 6 , the first sub-light adjustment layer 109 includes a first sub-opening 1091 and a first sub-opening 1091 close to the first sub-opening 1091 . A sidewall 1092, 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, the angle between the first sidewall 1092 and the base substrate 103 is θ1, The included angle between the second sidewall 1102 and the base substrate 103 is θ2, where θ1<θ2.

The third light adjustment layer 1071 located in the second display area 102 may have a double-layer structure, and the third light adjustment layer 1071 includes a first sub-light adjustment layer 109 and a second sub-light adjustment layer arranged in sequence along the first direction X 110. At the same time, when the first sub-ray adjustment layer 109 and the second sub-ray adjustment layer 110 are made of the same material, the first sidewall 1092 of the first sub-ray adjustment layer 109 close to the first sub-opening 1091 and the base substrate can be adjusted The included angle θ1 between 103 is smaller than the included angle θ2 between the second sidewall 1102 of the second sub-light adjusting layer 110 close to the second sub-opening 1101 and the base substrate 103, so that 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 can be totally reflected and emitted along the direction of the front viewing angle as much as possible, so as to ensure the light extraction efficiency and display brightness of the second display area 102 .

Optionally, continue referring to FIG. 4 , FIG. 5 or FIG. 6 , along the first direction X, the fourth light adjustment layer 1072 is located on the side of the first sub-ray adjustment layer 109 away from the base substrate 103 , and the second sub-ray adjustment unit is located at the side of the first sub-ray adjustment layer 109 away from the base substrate 103 . The fourth light adjusting layer 1072 is on the side away from the base substrate 103, the refractive index of the first sub-ray adjusting layer 109 is n1, the refractive index of the second sub-ray adjusting layer 110 is n2, and the refractive index of the fourth light adjusting layer 1072 is n3, where n3>n2>n1.

Wherein, in the second display area 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 large-angle light emitted by the light-emitting element 104 can pass through the fourth light adjustment layer 1072 Total reflection occurs at the contact interface with the third light adjustment layer 1071, and then the exit angle of the large-angle light is adjusted to ensure that the light exits along the frontal viewing angle as much as possible. By controlling the first sub-light adjustment layer in the third light adjustment layer 1071 The refractive index n1 of 109 is smaller than the refractive index n2 of the second sub-ray adjustment layer 110, which can also make the large-angle light incident to the first sub-ray adjustment layer 109 and the large-angle light incident to the second sub-ray adjustment layer 110. Total reflection can occur, and the light can be emitted along the front viewing angle direction as much as possible, thereby effectively improving the light extraction efficiency of the second display area 102 .

Optionally, FIG. 7 is a schematic structural diagram of another display panel provided by an embodiment of the present invention. As shown in FIG. 7 , along the first direction X, the second sub-ray adjustment layer 110 includes a side away from the base substrate 103 . The first surface 111 and the fourth light adjusting layer 1072 include a second surface 112 that is far from the base substrate 103 and at least partially overlaps the second opening 108 . The first surface 111 and the second surface 112 are located on the same plane.

The third light adjustment layer 1071 includes two layers, namely the first sub-ray adjustment layer 109 and the second sub-ray adjustment layer 110, and the first sub-ray adjustment layer 109 and the second sub-ray adjustment layer 110 are arranged at intervals. A sub-ray adjustment layer 109 is located on the side close to the base substrate 103, the second sub-ray adjustment layer 110 is located on the side of the first sub-ray adjustment layer 109 away from the base substrate 103, the first sub-ray adjustment layer 109 and the first sub-ray adjustment layer 109 are located on the side of the base substrate 103. The two sub-ray adjustment layers 110 can both adjust the exit direction of the large-angle light. In the process of preparing the second light adjustment structure 107, the first sub-ray adjustment layer 109 is prepared first, and then the fourth light adjustment layer 1072 is prepared. After the fourth light adjusting layer 1072 is etched, the second sub light adjusting layer 110 is prepared, so that the first surface 111 and the fourth light adjusting layer 1072 in the second sub light adjusting layer 110 which are far away from the base substrate 103 The second surface 112 far away from the base substrate 103 is located on the same plane. When part of the large-angle light rays are totally reflected at the fourth light adjustment layer 1072 and the second sub-light adjustment layer 110, they can be directly emitted along the front viewing angle direction. The probability of refraction on the second surface 112 of the fourth light adjustment layer 1072 is reduced, and the light exit angle is affected.

Optionally, continue referring to FIG. 2 , FIG. 6 or FIG. 7 , the third light adjustment layer 1071 includes a sidewall 113 close to the second opening 108 , and the angle between the sidewall 113 and the base substrate 103 is θ3, where 70° ≤θ3≤90°.

The third light adjustment layer 1071 includes a sidewall 113 close to the second opening 108 , the sidewall 113 can be a straight edge, and the angle between the sidewall 113 and the base substrate 103 can be controlled between 70° and 90° , to ensure that the light emitted by 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 totally reflected on the sidewall 113. The large-angle light emission probability of the second display area 102 increases the display brightness of the second display area 102 .

Optionally, FIG. 8 is a schematic structural diagram of another display panel provided by an embodiment of the present invention. As shown in FIG. 8 , along the first direction X, any two points in the sidewall 113 are close to the side of the base substrate 103 . The included angle θ31 between the tangent of the point and the base substrate 103 is greater than the included angle θ32 between the tangent of the point on the side of the sidewall 113 away from the base substrate 103 and the base substrate 103 .

Wherein, as shown in FIG. 8 , the third light adjustment layer 1071 includes a side wall 113 close to the second opening 108 , and the side wall 113 can also be set as an arc edge, in order to ensure the occurrence of large-angle light at the third light adjustment layer 1071 The exit angle is obtained after total reflection, so that along the first direction X, the angle θ31 between the tangent of the point on the side wall 113 close to the base substrate 103 and the base substrate 103 is greater than the angle θ31 in the side wall 113 away from the base substrate 103 The angle θ32 between the tangent of the point on one side and the base substrate 103, the curvature of the side wall 113 is gradually reduced to ensure that the light is as far as possible along the front view direction after the side wall 113 of the third light adjustment layer 1071 is totally reflected output to improve 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. As shown in FIG. 9 , the second light adjustment layer 1052 and the fourth light adjustment layer 1072 are integrally provided.

Wherein, 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 1052 and the fourth light adjustment layer 1052 can be prepared in the same layer. The light adjustment layer 1072, at this time, the second light adjustment layer 1052 and the fourth light adjustment layer 1072 can be made of the same material, so that the second light adjustment layer 1052 and the fourth light adjustment layer 1072 have an integrated structure, which effectively simplifies the process flow. Reduce production costs.

Optionally, FIG. 10 is a schematic structural diagram of a second display area provided by 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 adjustment layer 1071 at least includes a first light adjustment subsection 114, a second light adjustment subsection 115 and a third light adjustment subsection 116, the first light adjustment subsection 114 includes a first opening subsection 1141, a second light adjustment subsection 114 The light adjusting subsection 115 includes a second opening subsection 1151 and the third light adjusting subsection 116 includes a third opening subsection 1161. Along the first direction X, the red light emitting element 1041 and the first opening subsection 1141 at least partially overlap , the green light emitting element 1042 and the second opening subsection 1151 at least partially overlap, the blue light emitting element 1043 and the third opening subsection 1161 at least partially overlap, the thickness of the first light adjusting subsection 114 is h1, and the second light adjusting The thickness of the subsection 115 is h2, and the thickness of the third light adjustment subsection 116 is h3, where h3<h1<h2.

Wherein, in order to realize the normal display of the display panel 100, the light emitting element 104 may include a red light emitting element 1041, a green light emitting element 1042 and a blue light emitting element 1043, and along the first direction X, a third light adjustment layer 1071 and a Four light adjustment layers 1072, light-emitting elements of different colors correspond to different third light adjustment layers 1071, so the third light adjustment layer 1071 includes a first light adjustment subsection 114 corresponding to the red light-emitting element 1041, corresponding to the green light-emitting element The second light adjusting subsection 115 provided at 1042 corresponds to the third light adjusting subsection 116 provided by the blue light emitting element 1043, and the first light adjusting subsection 114 includes a first opening subsection 1141, which is convenient for the light emitted by the red light emitting element 1041. The red light along the front viewing angle direction exits from the first opening subsection 1141, and the second light adjusting subsection 115 includes a second opening subsection 1151, so that the green light along the front viewing angle direction emitted by the green light emitting element 1042 can pass through the second opening The subsection 1151 exits, and the third light adjusting subsection 116 includes a third opening subsection 1161 , so that the blue light along the front viewing angle direction emitted by the blue light emitting element 1043 is emitted from the third opening subsection 1161 . In the second display area 102 , the light-emitting areas of different color light-emitting regions are the same, and the light-emitting brightness of different color light-emitting regions is different. As shown in FIG. 10 , when the third light adjustment layer 1071 is one layer, the green light-emitting element can be adjusted. The thickness h2 of the second light adjusting subsection 115 of the red light emitting element 1042 is greater than the thickness h1 of the first light adjusting subsection 114 of the red light emitting element 1041, and the thickness h1 of the first light adjusting subsection 114 of the red light emitting element 1041 is greater than that of the blue light emitting element The thickness h3 of the third light adjustment subsection 116 of 1043 adjusts the large-angle light by the third light adjustment layer 1071 in different color areas, so that the light emission brightness of the green light emission area is greater than that of the red light emission area, and the light emission brightness of the red light emission area is higher than that of the red light emission area. The light-emitting brightness is greater than the light-emitting brightness of the blue light-emitting region, thereby improving the overall display effect of the second display region 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 , and 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 adjustment structure 118, and the third light adjustment structure 118 is located on the side of the light-emitting element 104 away from the base substrate 103; the third The light adjusting structure 118 includes a fifth light adjusting layer 1181 and a sixth light adjusting layer 1182 . The refractive index of the fifth light adjusting layer 1181 is greater than that of the sixth light adjusting layer 1182 ; the fifth light adjusting layer 1181 includes a third opening 119 , the third opening 119 and the light-emitting element 104 at least partially overlap; 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.

Wherein, 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 the second display area 102, and the first display area 101 surrounds the first display area 101. Three display areas 117 , the third display area 117 includes a third light adjustment structure 118 , the third light adjustment structure 118 is located on the side of the light-emitting element 104 away from the base substrate 103 , and the third light adjustment structure 118 is arranged in sequence along the first direction X The fifth light adjustment layer 1181 and the sixth light adjustment layer 1182, the refractive index of the fifth light adjustment layer 1181 is greater than the refractive index of the sixth light adjustment layer 1182, the fifth light adjustment layer 1181 can be a single-layer structure or a double layer The structure is shown in FIG. 11 with the fifth light adjustment layer 1181 as a single-layer structure and the third light adjustment layer 1071 as a single-layer structure. The fifth light adjustment layer 1181 includes the third opening 119 , the third opening 119 and the light-emitting element 104 At least partially overlapping, the third opening 119 is filled with the sixth light adjustment layer 1182, so that the light from the front view angle emitted by the light emitting element 104 exits directly. After the fifth light adjustment layer 1181, total reflection occurs, thereby ensuring the adjustment of large-angle light; due to the different pixel densities in different display areas, in order to ensure the same display effect in different display areas under the same driving signal, it is necessary to emit light to different display areas. In order to ensure the display effect of different display areas, the thickness H1 of the first light adjustment layer 1051 may be smaller than the thickness H5 of the fifth light adjustment layer 1181 along the first direction X, and the thickness of the fifth light adjustment layer 1181 H5 is smaller than the thickness H4 of the third light adjustment layer 1071 , so that the adjustment ability of the first light adjustment layer 1051 , the third light adjustment layer 1071 and the fifth light adjustment layer 1181 for large-angle light is gradually increased, which effectively improves the second display area 102 luminous efficiency.

Optionally, FIG. 12 is a schematic structural diagram of another display panel provided by 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 , the first The six light adjustment layers 1182 are located on the side of the third sub light adjustment layer 1183 away from the base substrate 103; along the first direction X, the thickness H6 of the third sub light adjustment layer 1183 is greater than the thickness H1 of the first light adjustment layer 1051, and the third The thickness H6 of the sub-ray adjusting layer 1183 is smaller than the thickness H4 of the third light adjusting layer 1071 .

The fifth light adjustment layer 1181 in the third display area 117 has a single-layer structure, the fifth light adjustment layer 1181 includes a third sub-light adjustment layer 1183 , and the third light adjustment layer 1071 in the second display area 102 has a double-layer structure. layer structure, the third light adjustment layer 1071 includes the first sub-light adjustment layer 109 and the second sub-light adjustment layer 110, so that 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 three sub-light-adjusting layers 1183 is smaller than the sum of the thickness H2 of the first sub-light-adjusting layer 109 and the thickness H3 of the second sub-light-adjusting layer 110 , and then the first display area 101 , the third display area 117 and the second display area 101 The ability of the area 102 to adjust the large-angle light is sequentially enhanced, so that the adjusted large-angle light exits along the front viewing angle light as much as possible, while matching the pixels of the first display area 101, the third display area 117 and the second display area 102. The feature of decreasing density sequentially makes the display brightness of the first display area 101 , the second display area 102 and the third display area 117 similar, which ensures the overall display effect and service life of the display panel 100 .

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

Wherein, as shown in FIG. 13 , exemplarily, along the first direction X, the third light adjustment layer 1071 may be arranged in a two-layer structure, and the third light adjustment layer 1071 includes the first sub-ray adjustment layer 109 and the second sub-ray The adjustment layer 110 and the fifth light adjustment layer 1181 can also be arranged in a two-layer structure. The fifth light adjustment layer 1181 includes a third sub-light adjustment layer 1183 and a fourth sub-light adjustment layer 1184, and the first light adjustment layer 1051 is arranged in a single layer. Layer structure, thickness H2 of the first sub-light-adjusting layer 109 on the side of the third light-adjusting layer 1071 close to the base substrate 103 , thickness H2 of the third sub-light-adjusting layer on the side of the fifth light adjusting layer 1181 close to the base substrate 103 The thickness H6 of 1183 is the same as the thickness H1 of the first light adjustment layer 1051 , and the thickness H3 of the second sub-light adjustment layer 110 on the side of the third light adjustment layer 1071 away from the base substrate 103 is greater than that of the fifth light adjustment layer 1181 The thickness H7 of the fourth sub-light adjustment layer 1184 on the side away from the base substrate 103 can also enable the first light adjustment layer 1051 , the fifth light adjustment layer 1181 and the third light adjustment layer 1071 to adjust the ability of the large-angle light gradually. increase, the light extraction efficiency of the second display area 102 and the third display area 117 is effectively improved, thereby ensuring the overall display brightness of the display panel 100 .

Optionally, referring to FIG. 11, the refractive index of the first light adjustment layer 1051 is n4, the refractive index of the third light adjustment layer 1071 is n5, and the refractive index of the fifth light adjustment layer is n6, where n5≤n6≤ n4.

Wherein, on the premise that the thicknesses of the first light adjusting layer 1051, the second light adjusting layer 1052 and the third light adjusting layer 1071 are gradually increased, the refractive index n4 of the first light adjusting layer 1051 and the third light adjusting layer 1071 can be The refractive index n5 and the fifth light adjustment layer n6 are the same, that is, they are made of the same material and can be made in the same layer, which effectively simplifies the process flow; the first light adjustment layer 1051, the second light adjustment layer 1052 and the third On the premise that the thickness of the light adjustment layer 1071 is 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 fifth light adjustment layer n6 are adjusted to be different, so that the second display area 102 Total reflection is more likely to occur between the third light adjustment layer 1071 and the fourth light adjustment layer 1072, and the large-angle light is more likely to exit along the front viewing angle after being adjusted by the third light adjustment layer 1071, so as to ensure the second display area 102 luminous efficiency.

FIG. 14 is a schematic structural diagram of a display device according to an embodiment of the present invention. As shown in FIG. 14 , the display device 200 includes the display panel 100 described in the above embodiment.

It should be noted that, since the display device provided in this embodiment has the same or corresponding beneficial effects of the display panel 100 of the above-mentioned embodiment, no further description is given here. The display device 200 provided in this embodiment of the present invention may be a mobile phone as shown in FIG. 14 , or may be any electronic product with a display function, including but not limited to the following categories: televisions, notebook computers, desktop monitors, tablet computers, Digital cameras, smart bracelets, smart glasses, vehicle-mounted displays, medical equipment, industrial control equipment, touch interactive terminals, etc., are not particularly limited in this embodiment of the present invention.

The above-mentioned specific embodiments do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (18)

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;

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 adjustment 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 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.

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