Display Panel and Display Device

Abstract

The present application provides a display panel and a display device. The display panel includes a substrate layer and a first light-emitting device. A plurality of first light-emitting devices are arranged at intervals on one side of the substrate layer. The first light-emitting device includes a first electrode, a second electrode, and a first light-emitting element that are stacked in a direction parallel to the substrate layer. Each first light-emitting element is disposed between the first electrode and the second electrode, so that the first electrode and the second electrode can drive the first light-emitting element to emit light. The display panel and the display device provided by the embodiments of the present application can enable ambient light outside the display panel to pass through the display panel through a film layer with a relatively high light transmittance in the first light-emitting device. Thus, without reducing the pixel arrangement density of the display panel, that is, without affecting the display effect of the display panel, the light transmittance of the display panel can be effectively increased, facilitating the integration of the photosensitive component in the display panel.

Description

Technical Field

[0001] This application relates to the field of display technologies, and particularly to a display panel and a display device. Background Art

[0002] With the rapid development of electronic devices, users have higher and higher requirements for the screen-to-body ratio, making the full-screen display of electronic devices receive more and more attention in the industry.

[0003] Traditional electronic devices such as mobile phones and tablet computers need to integrate components such as a front camera, a receiver, and an infrared sensing element. In the prior art, a notch or an opening can be formed in the display screen, and external light can enter the photosensitive component located below the screen through the notch or the opening on the screen. However, these electronic devices are not full screens in the true sense and cannot display in all areas of the entire screen. For example, the area corresponding to the front camera cannot display an image. Summary of the Invention

[0004] This application provides a display panel and a display device, realizing that at least part of the area of the display panel is light-transmissive and displayable, facilitating the under-screen integration of the photosensitive component.

[0005] In a first aspect, an embodiment of this application provides a display panel, including: a substrate layer; a plurality of first light-emitting devices spaced apart on one side of the substrate layer, each first light-emitting device including a first electrode, a second electrode, and a first light-emitting element stacked in a direction parallel to the substrate layer, and each first light-emitting element is disposed between the first electrode and the second electrode so that the first electrode and the second electrode can drive the first light-emitting element to emit light.

[0006] In some embodiments, a first light-emitting device includes one second electrode, a plurality of first light-emitting elements, and a plurality of first electrodes. The plurality of first light-emitting elements are respectively disposed on multiple sides of the second electrode along a direction parallel to the substrate layer, and the plurality of first light-emitting elements are all in contact with the second electrode. The plurality of first electrodes are respectively disposed on one side of the plurality of first light-emitting elements away from the second electrode; optionally, the plurality of first light-emitting elements in one first light-emitting device have the same light-emitting color; optionally, the two first electrodes in one first light-emitting device are arranged in a mirror image structure with respect to each other.

[0007] In some embodiments, the plurality of first light-emitting devices are spaced apart along a first direction and a second direction, and the first direction and the second direction intersect; optionally, the first direction and the second direction are perpendicular.

[0008] In some embodiments, a first electrode, a first light-emitting element, and a second electrode in at least one first light-emitting device are stacked along a third direction, and the first electrode, a second light-emitting device, and the second electrode of at least one first light-emitting device are stacked along a fourth direction, and the third direction intersects with the fourth direction; optionally, the third direction and the fourth direction are perpendicular.

[0009] In some embodiments, the first electrode has a first inclined surface, and the first inclined surface is disposed on a side of the first electrode away from the first light-emitting element. The first inclined surface is inclined relative to the thickness direction of the display panel so that the light emitted by the first light-emitting element is emitted toward the display surface of the display panel after passing through the first inclined surface; optionally, the orthographic projection area of the first inclined surface on the substrate layer is S1, and the orthographic projection area of the first light-emitting device on the substrate layer is S2, and 50% ≤ S1 / S2 ≤ 65%.

[0010] In some embodiments, the first inclined surface is inclined along a direction away from the substrate layer, and a clearance space is formed between the first inclined surface and the substrate layer; the first light-emitting device further includes a support portion, and the support portion is disposed in the clearance space; optionally, the orthographic projection of the support portion on the substrate layer is located within the orthographic projection of the first electrode on the substrate layer.

[0011] In some embodiments, the first electrode includes a semi-transmissive and semi-reflective film layer, and the first inclined surface is disposed on the surface of the semi-transmissive and semi-reflective film layer; optionally, the included angle θ between the first inclined surface and the display surface of the display panel satisfies: 42.5° ≤ θ ≤ 47.5°; optionally, the included angle θ between the first inclined surface and the display surface of the display panel is 45°.

[0012] In some embodiments, the first electrode includes a light-transmissive layer and a light-adjusting layer. The light-transmissive layer is disposed between the first light-emitting element and the light-adjusting layer, the first inclined surface is disposed on a side of the light-transmissive layer away from the first light-emitting element, and the light-adjusting layer is disposed on the first inclined surface and is used for adjusting the light-emitting direction of the first light-emitting element; optionally, the light-adjusting layer includes a light-reflecting layer and / or a light-refracting layer. The light-reflecting layer is used for reflecting the light emitted by the first light-emitting element to the display surface of the display panel, and the light-refracting layer is used for emitting the light emitted by the first light-emitting element toward the display surface of the display panel after passing through the light-refracting layer.

[0013] In some embodiments, the second electrode has a second inclined surface, and the second inclined surface is disposed on a side of the second electrode away from the first light-emitting element. The second inclined surface is inclined relative to the thickness direction of the display panel so that the light emitted by the first light-emitting element is emitted toward the display surface of the display panel after passing through the second inclined surface.

[0014] In a second aspect, an embodiment of the present application provides a display device, including the display panel provided in any one of the above embodiments.

[0015] The display panel and the display device provided by the embodiments of the present application can enable the ambient light outside the display panel to pass through the display panel through the film layer with a relatively high light transmittance in the first light-emitting device by disposing the first electrode, the second electrode, and the first light-emitting element of the first light-emitting device on the substrate layer. In this way, without reducing the pixel arrangement density of the display panel, that is, without affecting the display effect of the display panel, the light transmittance of the display panel can be effectively increased, which is convenient for integrating the photosensitive component into the display panel. Description of the Drawings

[0016] The features, advantages, and technical effects of the exemplary embodiments of the present application will be described below with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale.

[0017] Figure 1 A front view of a display panel provided by an embodiment of the present application;

[0018] Figure 2 In an embodiment of the present application Figure 1 A cross-sectional schematic view taken along B-B;

[0019] Figure 3 In another embodiment of the present application Figure 1 A cross-sectional schematic view taken along B-B;

[0020] Figure 4 In still another embodiment of the present application Figure 1 A cross-sectional schematic view taken along B-B;

[0021] Figure 5 A front view of another display panel provided by an embodiment of the present application;

[0022] Figure 6 For Figure 5 A cross-sectional schematic view taken along C-C;

[0023] Figure 7 In yet another embodiment of the present application Figure 1 A cross-sectional schematic view taken along B-B;

[0024] Figure 8 In yet another embodiment of the present application Figure 1 A cross-sectional schematic view taken along B-B;

[0025] Figure 9 In yet another embodiment of the present application Figure 1 A cross-sectional schematic view taken along B-B;

[0026] Figure 10 In yet another embodiment of the present application Figure 1 A cross-sectional schematic view taken along B-B;

[0027] Figure 11 The front view of the display device provided by the embodiment of the present application;

[0028] Figure 12 is Figure 11 a schematic cross-sectional view along the D-D direction.

[0029] Explanation of reference numerals:

[0030] 100, display panel; 110, substrate layer; 120, first light-emitting device; 121, first electrode; 121a, first inclined surface; 1211, semi-transmissive and semi-reflective film layer; 1212, light-transmissive layer; 1213, light adjustment layer; 122, first light-emitting element; 123, second electrode; 123a, second inclined surface; 124, support portion;

[0031] 130, second light-emitting device; 131, third electrode; 132, second light-emitting element; 133, fourth electrode;

[0032] 140, encapsulation layer;

[0033] 150, support member;

[0034] 200, photosensitive component;

[0035] 10, display device;

[0036] AA, display area; AA1, first display area; AA2, second display area; NA, non-display area; S1, first surface; S2, second surface. Detailed implementation manners

[0037] Next, the features and exemplary embodiments of each aspect of the present application will be described in detail. In the following detailed description, many specific details are set forth in order to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application. In the drawings and the following description, at least some of the well-known structures and technologies are not shown in order to avoid unnecessarily obscuring the present application; and, for clarity, the dimensions of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0038] In addition, for the sake of understanding and easy description, the dimensions and thicknesses of each configuration shown in the drawings are arbitrarily shown, but the concept of the present application is not limited thereto. In the drawings, for clarity, the thicknesses of layers, films, panels, and regions are enlarged. In the drawings, for better understanding and easy description, the thicknesses of some layers and regions are enlarged.

[0039] It will be understood that when an element such as a layer, film, region or substrate is described as being "on" another element, the element can be directly on the other element or there can also be intervening elements. In contrast, when an element is described as being "directly on" another element, there are no intervening elements. Further, throughout the specification, the phrase "on" a target element means positioned above or below the target element and does not necessarily mean positioned "at the upper side" based on the direction of gravity.

[0040] Further, unless expressly stated to the contrary, the word "comprising" will be understood to imply the inclusion of the stated elements but not the exclusion of any other elements.

[0041] In electronic devices such as mobile phones and tablet computers, it is necessary to integrate photosensitive components such as front cameras, infrared light sensors, proximity light sensors, etc. on one side of the display panel. In some embodiments, a light-transmissive display area can be provided on the above-mentioned electronic device, and the photosensitive components can be provided on the back of the light-transmissive display area, so as to achieve a full-screen display of the electronic device while ensuring the normal operation of the photosensitive components.

[0042] In order to improve the light transmittance of the light-transmissive display area, usually the pixel arrangement density in the light-transmissive display area is set lower than that in other display areas, or a secondary screen is provided in the light-transmissive display area, and the secondary screen is folded when the photosensitive components need to be used. However, the inventors have found that reducing the pixel arrangement density in the light-transmissive display area will affect the display effect of the light-transmissive display area of the display panel, and the method of providing a secondary screen increases the structural complexity of the display panel, and neither is an ideal way to improve the light transmittance of the light-transmissive display area.

[0043] In view of this, embodiments of the present application provide a display panel and a display device, and the embodiments of the display panel and the display device will be described below with reference to the accompanying drawings.

[0044] Embodiments of the present application provide a display panel, and the display panel can be an Organic Light Emitting Diode (OLED) display panel.

[0045] As Figure 1 FIG. shows a top view structural schematic diagram of a display panel 100 provided by an embodiment of the present application, wherein the display panel includes a display area AA and a non-display area NA provided around the display area AA, as Figures 2 to 4 respectively show in different embodiments Figure 1 a cross-sectional structural schematic diagram along B-B.

[0046] As Figures 1 to 4As shown, the display panel 100 provided by an embodiment of the present application includes a substrate layer 110 and a first light-emitting device 120. A plurality of first light-emitting devices 120 are arranged at intervals on one side of the substrate layer 110. The first light-emitting device 120 includes a first electrode 121, a second electrode 123, and a first light-emitting element 122 that are stacked in a direction parallel to the substrate layer 110. Each first light-emitting element 122 is disposed between the first electrode 121 and the second electrode 123 so that the first electrode 121 and the second electrode 123 can drive the first light-emitting element 122 to emit light.

[0047] Specifically, the first light-emitting device 120 is disposed in the display area AA. It can be arranged at intervals in one direction parallel to the substrate layer 110, or can be arranged at intervals in a plurality of directions parallel to the substrate layer 110. Exemplarily, the first light-emitting devices 120 are arranged in a rectangular array in the direction parallel to the substrate layer 110. Optionally, adjacent two first light-emitting devices 120 arranged at intervals can be insulated from each other through an insulating structure, or there can be a hollow structure between them and they are insulated from each other through a gap.

[0048] The first electrode 121, the first light-emitting element 122, and the second electrode 123 of the first light-emitting device 120 can be stacked in any direction parallel to the substrate layer 110. The first electrodes 121, the first light-emitting elements 122, and the second electrodes 123 of different first light-emitting devices 120 can be stacked in the same direction or in different directions, which is not limited here and can be selected according to specific requirements.

[0049] The first electrode 121, the second electrode 123, and the first light-emitting element 122 are all disposed on the substrate layer 110. Therefore, the first electrode 121, the first light-emitting element 122, and the second electrode 123 can be respectively formed on the substrate layer 110 by an inkjet printing process.

[0050] In order to enable the first light-emitting element 122 to emit light under the action of the first electrode 121 and the second electrode 123, a potential difference can be formed between the first electrode 121 and the second electrode 123, that is, the first electrode 121 and the second electrode 123 can generate a potential difference under the action of an external circuit, and electrons and holes are respectively generated under the action of the potential difference, so that the first light-emitting element 122 emits light. Optionally, the first electrode 121 can be set as an anode and the second electrode 123 can be set as a cathode, or the first electrode 121 can be set as a cathode and the second electrode 123 can be set as an anode, which is selected according to actual needs.

[0051] Optionally, the first light-emitting element 122 can emit red light, green light, or blue light, and the light-emitting color and arrangement mode of the first light-emitting element 122 can be set according to the pixel arrangement of the display panel 100.

[0052] Since the direction of the light emitted from the first light-emitting element 122 to the first electrode 121 can be parallel to the substrate layer 110, the light-emitting direction of the first light-emitting element 122 to the first electrode 121 is parallel to the direction of the display surface of the display panel 100. At this time, the optical path of the part of the light emitted from the first light-emitting element 122 to the first electrode 121 can be changed so that it emits light in the direction of the display surface of the display panel 100.

[0053] It can be understood that the display surface can be set on the side of the first light-emitting device 120 away from the substrate layer 110, or can be set on the side of the substrate layer 110 away from the first light-emitting device 120. There is no limitation here and it can be selected according to specific requirements.

[0054] The light emitted by the first light-emitting element 122 can only be emitted from the first electrode 121, or can be emitted from the first electrode 121 and the second electrode 123 at the same time. When the light emitted by the first light-emitting element 122 is emitted from the first electrode 121 and the second electrode 123 at the same time, since the first electrode 121 and the second electrode 123 are respectively arranged on both sides of the first light-emitting element 122, the second electrode 123 can be set to have a mirror-image structure with the first electrode 121 so that the light-emitting direction through the second electrode 123 is the same as the light-emitting direction through the first electrode 121. As Figure 2 and Figure 3 shows that the first light-emitting element 122 only emits light from the first electrode 121, as Figure 4 shows that the first light-emitting element 122 emits light from the first electrode 121 and the second electrode 123 at the same time.

[0055] It can be understood that since the first light-emitting device 120 itself has a film layer with a relatively high light transmittance, the first electrode 121, the first light-emitting element 122, and the second electrode 123 are all arranged on the substrate layer 110, that is, the stacking direction of the first electrode 121, the first light-emitting element 122, and the second electrode 123 is parallel to the surface of the substrate layer 110. Then, the ambient light outside the display panel 100 can pass through the film layer with a relatively high light transmittance in the first light-emitting device 120 in the direction perpendicular to the substrate layer 110. In this way, without reducing the arrangement density of the first light-emitting device 120, that is, without reducing the pixel arrangement density of the display panel 100, the light transmittance of the display panel 100 can be improved.

[0056] The display panel 100 provided by the embodiment of the present application can enable the ambient light outside the display panel 100 to pass through the display panel 100 through the film layer with a relatively high light transmittance in the first light-emitting device 120 by arranging the first electrode 121, the second electrode 123, and the first light-emitting element 122 of the first light-emitting device 120 on the substrate layer 110. In this way, without reducing the pixel arrangement density of the display panel 100, that is, without affecting the display effect of the display panel 100, the light transmittance of the display panel 100 can be effectively improved, which is convenient for integrating the photosensitive component into the display panel 100.

[0057] Optionally, the first light-emitting device 120 can be arranged in the entire display panel 100, or the first light-emitting device 120 can be arranged only in the area of the display panel 100 where the photosensitive component needs to be integrated, and it can be selected according to needs, which is not limited here.

[0058] Figure 5 The top view schematic diagram of the display panel 100 according to an embodiment of the present application is shown. Figure 6 As shown in an embodiment Figure 5 The cross-sectional structure schematic diagram along C-C is shown.

[0059] As Figure 5 shown, in some embodiments, the display panel 100 has a first display area AA1, a second display area AA2, and a non-display area NA arranged around the second display area AA2, and the light transmittance of the first display area AA1 is greater than that of the second display area AA2.

[0060] Optionally, the light transmittance of the first display area AA1 is greater than or equal to 15%. To ensure that the light transmittance of the first display area AA1 is greater than 15%, it is set to be greater than 40%, and even has a higher light transmittance. In this embodiment, the light transmittance of each functional film layer of the display panel 100 is greater than 80%, and even the light transmittance of at least some functional film layers is greater than 90%.

[0061] According to the display panel 100 of the embodiment of the present application, the light transmittance of the first display area AA1 is greater than that of the second display area AA2, so that a photosensitive component can be integrated on the back of the first display area AA1 of the display panel 100, realizing the under-screen integration of a photosensitive component such as a camera. At the same time, the first display area AA1 can display a picture, increasing the display area of the display panel 100 and realizing the full-screen design of the display device.

[0062] There are various ways to set the number of the first display area AA1 and the second display area AA2. For example, the number of both the first display area AA1 and the second display area AA2 is 1, which is used to achieve the under-screen integration of the photosensitive component or to achieve fingerprint recognition. Or, in some other alternative embodiments, the number of the first display areas AA1 is two, where one first display area AA1 is used to achieve the under-screen integration of the photosensitive component, and the other first display area AA1 is used to achieve fingerprint recognition.

[0063] Optionally, the first light-emitting device 120 can be only arranged in the first display area AA1, or the first light-emitting device 120 can be arranged in both the first display area AA1 and the second display area AA2 at the same time.

[0064] As Figure 5 and Figure 6 shown, in some embodiments, the display panel 100 further includes a second light-emitting device 130 located in the second display area AA2. The second light-emitting device 130 includes a third electrode 131, a second light-emitting element 132, and a fourth electrode 133 that are stacked in a direction away from the substrate layer 110. The third electrode 131 and the fourth electrode 133 are used to drive the second light-emitting element 132 to emit light.

[0065] That is to say, the first light-emitting device 120 is arranged in the first display area AA1, and the second light-emitting device 130 is arranged in the second display area AA2. This is because photosensitive components such as an under-screen camera are integrated in the first display area AA1, so only the light transmittance of the first display area AA1 needs to be improved.

[0066] It can be understood that arranging the first light-emitting device 120 in the first display area AA1 and the second light-emitting device 130 in the second display area AA2 can meet the light transmittance requirement of the display panel 100 for the first display area AA1, and there may be no requirement for the light transmittance of the second display area AA2. Therefore, the second light-emitting device 130 is arranged in the second display area AA2 to reduce the overall processing difficulty of the display panel 100.

[0067] In some embodiments, the first light-emitting device 120 includes a second electrode 123, a plurality of first light-emitting elements 122, and a plurality of first electrodes 121. The plurality of first light-emitting elements 122 are respectively arranged on multiple sides of the second electrode 123 along a direction parallel to the substrate layer 110, and the plurality of first light-emitting elements 122 are all in contact with the second electrode 123. The plurality of first electrodes 121 are respectively arranged on one side of the plurality of first light-emitting elements 122 away from the second electrode 123.

[0068] Specifically, multiple first light-emitting elements 122 and first electrodes 121 can be disposed on two opposite sides of the second electrode 123, or on two adjacent sides of the second electrode 123, or the first light-emitting elements 122 and the first electrodes 121 are disposed on the circumferential side of the second electrode 123.

[0069] With such an arrangement, it is equivalent to multiple first electrodes 121 and multiple first light-emitting elements 122 sharing the same second electrode 123, which can increase the arrangement density of the first electrodes 121, improve the light-emitting area of the first light-emitting device 120, and further improve the pixel arrangement density of the display panel, so that the display panel has a better display effect.

[0070] Optionally, multiple first light-emitting elements 122 in one first light-emitting device 120 can emit light of the same color or different colors. In an embodiment where multiple first light-emitting elements 122 in one first light-emitting device 120 emit different colors of light, the first light-emitting elements 122 emitting different colors of light can be arranged to emit light alternately to meet the requirements of different driving voltages required by the first light-emitting elements 122 emitting different lights for the second electrode 123. In an embodiment where multiple first light-emitting elements 122 in one first light-emitting device 120 emit light of the same color, multiple first light-emitting elements 122 in one first light-emitting device 120 can emit light simultaneously or alternately, which can be selected according to specific requirements.

[0071] In some embodiments, multiple first light-emitting elements 122 in one first light-emitting device 120 emit light of the same color.

[0072] If multiple first light-emitting elements 122 emit light of the same color, the driving voltages required to drive the second electrode 123 are also the same, and multiple first light-emitting elements 122 of one first light-emitting device 120 can emit light simultaneously, improving the display effect.

[0073] In some embodiments, two first electrodes 121 in one first light-emitting device 120 are arranged in a mirror image structure with respect to each other.

[0074] For two first electrodes 121 located on opposite sides of the first light-emitting device 120, in order to make their light-emitting directions the same, they can be arranged in a mirror image structure with respect to each other to improve the light-emitting efficiency of the first light-emitting device 120.

[0075] In some embodiments, multiple first light-emitting devices 120 are arranged at intervals in a first direction and a second direction, and the first direction and the second direction intersect.

[0076] Specifically, both the first direction and the second direction are parallel to the substrate layer 110. The included angle between the first direction and the second direction can be an acute angle, a right angle, an obtuse angle, etc., and the angles of the first direction and the second direction can be specifically set according to needs.

[0077] At the same time, the first light-emitting devices 120 are arranged at intervals along the first direction and the second direction, which is convenient for controlling the distance between two adjacent first light-emitting devices 120, so that the brightness distribution of the display panel 100 is more uniform.

[0078] In some embodiments, the first direction and the second direction are perpendicular. Then the plurality of first light-emitting devices 120 are arranged in a rectangular array. With such an arrangement, the uniformity of the light-emitting brightness of the display panel 100 is further improved.

[0079] In some embodiments, the first electrode 121, the first light-emitting element 122, and the second electrode 123 in at least one first light-emitting device 120 are stacked along a third direction, and the first electrode 121, the first light-emitting element 122, and the second electrode 123 in at least one first light-emitting device 120 are stacked along a fourth direction, and the third direction intersects the fourth direction.

[0080] Specifically, the third direction and the fourth direction can be respectively the same as the arrangement direction of the first light-emitting devices 120, or can respectively intersect the arrangement direction of the first light-emitting devices 120, and can be selected according to specific requirements.

[0081] It can be understood that if the first electrodes 121, the first light-emitting elements 122, and the second electrodes 123 of different first light-emitting devices 120 are arranged in different directions, then the positions of the light-emitting surfaces and the corresponding light-emitting directions of the corresponding first light-emitting devices 120 are also different. With such an arrangement, the first light-emitting devices 120 stacked along one direction can be used to compensate for the light-emitting gaps between two adjacent first light-emitting devices 120 stacked in the other direction, so as to improve the overall display effect of the display panel 100.

[0082] Optionally, the included angle between the third direction and the fourth direction can be an acute angle, a right angle, an obtuse angle, etc., and there is no limitation here.

[0083] In some embodiments, the third direction and the fourth direction are perpendicular. With such a setting, the compensation effect of the first light-emitting device 120 on the light-emitting gap can be further improved, so as to further improve the display effect of the display panel 100. In order to make the light emitted by the first light-emitting element 122 enter the first electrode 121, the first electrode 121 can be a transparent film layer or a semi-transmissive and semi-reflective film layer 1211. The light emitted by the first light-emitting element 122 is emitted towards the first electrode 121 and enters the first electrode 121, and then exits towards the display surface of the display panel 100 after being reflected or refracted by the relevant film layers in the first electrode 121.

[0084] In some embodiments, the first electrode 121 has a first inclined surface 121a, and the first inclined surface 121a is disposed on a side of the first electrode 121 away from the first light-emitting element 122. The first inclined surface 121a is inclined with respect to the thickness direction of the display panel 100, so that the light emitted by the first light-emitting element 122 exits towards the display surface of the display panel 100 after passing through the first inclined surface 121a.

[0085] In this way, after the light emitted by the first light-emitting element 122 enters the first electrode 121, it is refracted or reflected by one or more first inclined surfaces 121a and finally emits light towards the display surface of the display panel 100. Therefore, the number of the first inclined surfaces 121a included in the first electrode 121 can be one or more than two, and can be selected according to specific needs, which is not limited here.

[0086] Therefore, by providing the first inclined surface 121a on the side of the first electrode 121 away from the first light-emitting element 122 and setting the first inclined surface 121a to be inclined with respect to the substrate layer 110, the light incident on the first electrode 121 can change its propagation direction after passing through the first inclined surface 121a and thus emit light towards the display surface of the display panel 100. Specifically, the inclination direction and angle of the first inclined surface 121a can be set according to the required light-emitting direction and the like.

[0087] In some embodiments, the orthographic projection area of the first inclined surface 121a on the substrate layer 110 is S1, and the orthographic projection area of the first light-emitting device 120 on the substrate layer is S2, and 50% ≤ S1 / S2 ≤ 65%. With such a setting, it can be ensured that the first light-emitting device 120 has a sufficient light-emitting area to ensure the display effect of the display panel 100.

[0088] Optionally, from the side of the first electrode 121 close to the first light-emitting element 122 to the side away from the first light-emitting element 122, the first inclined surface 121a can be inclined in a direction away from the substrate layer 110 or in a direction close to the substrate layer 110, which is not limited here and can be selected according to the requirements of the specific light-emitting direction.

[0089] As Figures 7 to 9 shown in different embodiments, Figure 1 is a schematic cross-sectional structure diagram along B-B.

[0090] As Figures 7 to 9 shown, in some embodiments, the first inclined surface 121a is inclined in a direction away from the substrate layer 110, and a relief space is formed between the first inclined surface 121a and the substrate layer 110.

[0091] In this way, the light emitted by the first light-emitting element 122 is incident on the first electrode 121 and then exits in a direction away from the substrate layer 110 after being reflected or refracted by the first inclined surface 121a. That is to say, by such a setting, the display panel 100 can emit light in a direction away from the substrate layer 110, which can improve the display effect of the display panel 100.

[0092] In some embodiments, the first light-emitting device 120 further includes a support portion 124, and the support portion 124 is disposed in the relief space.

[0093] It can be understood that the support portion 124 can provide a certain supporting effect for the first electrode 121 to improve the structural stability of the first electrode 121.

[0094] Optionally, the orthographic projection of the support portion 124 on the substrate layer 110 may be located within the orthographic projection of the first electrode 121 on the substrate layer 110, or the two may partially overlap.

[0095] In some embodiments, the orthographic projection of the support portion 124 on the substrate layer 110 is located within the orthographic projection of the first electrode 121 on the substrate layer 110.

[0096] In this way, while ensuring the supporting effect of the support portion 124 on the first electrode 121, the area occupied by the support portion 124 can be reduced, which is beneficial to improving the pixel arrangement density of the display panel 100.

[0097] It can be understood that in order to have multiple ways for the light incident on the first electrode 121 parallel to the substrate layer 110 to be emitted toward the display surface of the display panel 100 after the optical path conversion, it can pass through multiple refractions, or through multiple reflections, or through a combination of refraction and reflection. Specific optical path conversion film layers can be provided in the first electrode 121 according to needs to achieve the purpose of converting the optical path in a preset direction.

[0098] As Figure 2 、 Figure 3 、 Figure 4 and Figure 7 shown, in some embodiments, the first electrode 121 includes a semi-transmissive and semi-reflective film layer 1211, and the first inclined surface 121a is disposed on the surface of the semi-transmissive and semi-reflective film layer 1211.

[0099] Specifically, the semi-transmissive and semi-reflective film layer 1211 allows light to pass through and can also reflect light. The light emitted by the first light-emitting element 122 can be incident on the semi-transmissive and semi-reflective film layer 1211 in a direction perpendicular to the surface of the semi-transmissive and semi-reflective film layer 1211, and then is reflected when passing through the first inclined surface 121a, and the reflected light exits in the direction of the display surface.

[0100] With such a setting, while ensuring that the light-emitting direction of the first electrode 121 faces the display surface of the display panel 100, the structure of the first electrode 121 can be simplified.

[0101] As Figure 2 shown, in some embodiments, the included angle θ between the first inclined surface 121a and the display surface of the display panel 100 satisfies: 42.5° ≤ θ ≤ 47.5°.

[0102] Specifically, θ can be 42.5°, 45°, or 47.5°, etc. When θ is 45°, the light emitted by the first light-emitting element 122 exits in a direction perpendicular to the display surface of the display panel 100 after being reflected by the first inclined surface 121a, that is, the light-emitting direction of the first light-emitting device 120 is perpendicular to the display surface of the display panel 100. When θ is 42.5° or 47.5° respectively, the included angle between the light-emitting direction of the first light-emitting device 120 and the direction perpendicular to the display surface of the display panel 100 is 5°. Therefore, setting 42.5° ≤ θ ≤ 47.5° can make the light emitted by the first light-emitting device 120 float within a range of an included angle of 5° with the direction perpendicular to the display surface of the display panel 100. In this way, the display uniformity of the display panel 100 can be improved, and the display effect of the display panel 100 can be enhanced.

[0103] In some embodiments, the included angle θ between the first inclined surface 121a and the display surface of the display panel 100 is 45°.

[0104] With such a setting, all the light emitted by the first light-emitting device 120 exits in a direction perpendicular to the display surface of the display panel 100, so that the display effect of the display panel 100 can be further improved.

[0105] It can be understood that the second electrode 123 can also be set to be mirror-symmetrical with the first electrode 121, so that the second electrode 123 can simultaneously serve as the light-emitting side of the first light-emitting device 120.

[0106] As Figure 8 and Figure 9As shown, in some embodiments, the first electrode 121 includes a light-transmitting layer 1212 and a light-adjusting layer 1213. The light-transmitting layer 1212 is disposed between the first light-emitting element 122 and the light-adjusting layer 1213. The first inclined surface 121a is disposed on the side of the light-transmitting layer 1212 away from the first light-emitting element 122. The light-adjusting layer 1213 is disposed on the first inclined surface 121a and is used to adjust the light-emitting direction of the first light-emitting element 122.

[0107] Specifically, the light emitted by the first light-emitting element 122 is incident on the light-adjusting layer 1213 after passing through the light-transmitting layer 1212, and then the light is emitted toward the display surface of the display panel 100 after the light propagation direction is changed by the light-adjusting layer 1213. Optionally, the light-adjusting layer 1213 can reflect the light toward the display surface or refract the light toward the display surface, which is not limited herein.

[0108] It can be understood that the light-adjusting layer 1213 can be a single film layer or a stack of multiple film layers. Exemplarily, the light-adjusting layer 1213 can be the result of stacking multiple film layers. The light incident on the light-adjusting layer 1213 is finally emitted toward the display surface of the display panel 100 after multiple refractions by multiple film layers within the light-adjusting layer 1213.

[0109] Therefore, by providing that the first electrode 121 includes the light-transmitting layer 1212 and the light-adjusting layer 1213, the light emitted by the first light-emitting element 122 can pass through the light-transmitting layer 1212 and be incident on the light-adjusting layer 1213, and the light propagation direction can be changed by the light-adjusting layer 1213, and finally the light emitted by the first light-emitting element 122 is emitted toward the display surface of the display panel 100.

[0110] In some embodiments, the light-adjusting layer 1213 includes a light-reflecting layer, and the light-reflecting layer is used to reflect the light emitted by the first light-emitting element 122 to the display surface of the display panel 100.

[0111] Specifically, the light-reflecting layer has a reflecting surface adapted to the first inclined surface 121a. The reflecting surface and the first inclined surface 121a can be mutually attached, and a surface capable of reflecting light is formed at the junction of the reflecting surface and the first inclined surface 121a. After the light emitted from the first light-emitting element passes through the light-transmitting layer 1212, it is reflected when passing through the interface between the first inclined surface 121a and the reflecting surface, and the reflected light is emitted toward the display surface of the display panel 100.

[0112] In some embodiments, the light-adjusting layer 1213 includes a light-refracting layer to cause the light emitted by the first light-emitting element 122 to be emitted toward the display surface of the display panel 100 after passing through the light-refracting layer.

[0113] Specifically, the number of light refraction layers included in each light adjustment layer 1213 can be one layer or multiple layers. The light refraction layer can make the light incident into the light adjustment layer 1213 exit towards the display surface of the display panel 100 after refraction. With such a setting, the purpose of changing the light emitted by the first light-emitting element 122 and exiting towards the display surface of the display panel 100 through the light adjustment layer 1213 can still be achieved.

[0114] The angle between the first inclined surface 121a and the display surface is not limited. Different angles of the first inclined surface 121a correspond to different light-emitting directions of the first light-emitting device 120. The light emitted by the first light-emitting device 120 can be perpendicular to the display surface or have a certain angle with the display surface, as long as the display effect of the display panel 100 is not affected.

[0115] In some embodiments, the second electrode 123 has a second inclined surface 123a. The second inclined surface 123a is disposed on the side of the second electrode 123 away from the first light-emitting element 122. The second inclined surface 123a is inclined with respect to the thickness direction of the display panel 100, so that the light emitted by the first light-emitting element 122 exits towards the display surface of the display panel 100 after passing through the second inclined surface 123a.

[0116] It can be understood that by setting the second inclined surface 123a of the second electrode 123 to emit light, the light-emitting area of the first light-emitting device 120 can be further increased, and the display effect of the display panel 100 can be further improved.

[0117] Since two adjacent first light-emitting devices 120 are arranged at intervals, in order to achieve mutual insulation between two adjacent first light-emitting devices 120 to avoid adverse effects on each other's light emission, optionally, an insulating layer can be provided between two adjacent first light-emitting devices 120, or two adjacent first light-emitting devices 120 can be arranged with a gap, and the purpose of mutual insulation between two adjacent first light-emitting devices 120 can be achieved. In some embodiments, two adjacent first light-emitting devices 120 are arranged with a gap.

[0118] That is, compared with the traditional display panel 100, the pixel definition layer is omitted, thus simplifying the structure of the display panel 100. At the same time, external ambient light can pass through the display panel 100 between two adjacent first light-emitting devices 120, further improving the light transmittance of the display panel 100.

[0119] Such as Figure 10 shows a cross-sectional structure schematic diagram taken along B-B in still another embodiment, where the display panel 100 has a packaging layer 140. Figure 1

[0120] Figure 10 ​​As shown, in some embodiments, the display panel 100 further includes a packaging layer 140 disposed on a side of the first light-emitting device 120 away from the substrate layer 110.

[0121] Specifically, during the forming process of the first light-emitting device 120, the heights thereof in a direction perpendicular to the substrate layer 110 are not the same. The packaging layer 140 can be provided to fill the height difference between different first light-emitting devices 120, and when the display panel is subjected to loads such as impact and vibration, the packaging layer 140 can also play a role in protecting the first light-emitting device 120 to improve the service life of the display panel 100.

[0122] In some embodiments, the display panel 100 further includes a support member 150 disposed on a side of at least a part of the second electrode 123 away from the substrate layer 110. Specifically, when manufacturing the packaging layer 140 on a side of the first light-emitting device 120 away from the substrate layer 110, the support member 150 can support the packaging layer 140 to ensure the structural stability of the packaging layer 140.

[0123] Optionally, the support member 150 can be cylindrical, frustum-shaped, prismatic, etc., and can be selected according to actual requirements.

[0124] Figure 11 The structural schematic diagram of the display device 10 provided by the embodiment of the present application is shown. Figure 12 For Figure 11 the cross-sectional schematic diagram along D-D in

[0125] The embodiment of the present application further provides a display device 10. As Figure 11 and Figure 12 shown, the display device 10 includes the display panel 100 provided in any one of the above embodiments.

[0126] The display panel 100 includes a first display area AA1 and a second display area AA2, and the light transmittance of the first display area AA1 is greater than that of the second display area AA2.

[0127] The display panel 100 includes opposite first and second surfaces S1 and S2, where the first surface S1 is a display surface. The display device 10 further includes a photosensitive component 200 located on the side of the second surface S2 of the display panel 100, and the photosensitive component corresponds to the position of the first display area AA1.

[0128] The photosensitive component 200 may be an image acquisition device for acquiring external image information. In some embodiments, the photosensitive component 200 is a Complementary Metal Oxide Semiconductor (CMOS) image acquisition device. In some other embodiments, the photosensitive component 200 may also be an image acquisition device in other forms, such as a Charge-coupled Device (CCD) image acquisition device. It can be understood that the photosensitive component 200 is not limited to being an image acquisition device. For example, in some embodiments, the photosensitive component 200 may also be a light sensor such as an infrared sensor, a proximity sensor, an infrared lens, a floodlight sensing element, an ambient light sensor, and a dot projector. In addition, other components may be integrated on the second surface S2 of the display panel 100 of the display device 10, such as a receiver, a speaker, etc.

[0129] According to the display device 10 provided by the embodiments of the present application, the pixel driving unit is provided to include a plurality of first pixel driving circuits connected in parallel to commonly drive the first sub-pixels in the first display area AA1. Such a setting can improve the driving ability of the driving circuit for the first sub-pixels in the first display area AA1, ensure the emission brightness of the first display area AA1, and reduce the brightness difference between the first display area AA1 and the second display area AA2.

[0130] Although the present application has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any manner. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel, characterized in that, Comprising: Substrate layer; First light-emitting devices, a plurality of the first light-emitting devices are spaced apart on one side of the substrate layer, the first light-emitting devices include a first electrode, a second electrode and a first light-emitting element stacked in a direction parallel to the substrate layer, and each of the first light-emitting elements is disposed between the first electrode and the second electrode so that the first electrode and the second electrode can drive the first light-emitting element to emit light; Wherein, the display panel has a first display area and a second display area, the light transmittance of the first display area is greater than that of the second display area; the first light-emitting devices are disposed in the first display area, the display panel further includes second light-emitting devices located in the second display area, the second light-emitting devices include a third electrode, a second light-emitting element and a fourth electrode stacked in a direction away from the substrate layer, and the third electrode and the fourth electrode are used to drive the second light-emitting element to emit light.

2. The display panel according to claim 1, wherein The first light-emitting device includes one of the second electrodes, a plurality of the first light-emitting elements and a plurality of the first electrodes, the plurality of the first light-emitting elements are respectively disposed on multiple sides of the second electrode along a direction parallel to the substrate layer, and the plurality of the first light-emitting elements are all in contact with the second electrode, and the plurality of the first electrodes are respectively disposed on one side of the plurality of the first light-emitting elements away from the second electrode.

3. The display panel according to claim 2, wherein The light-emitting colors of the plurality of the first light-emitting elements in one of the first light-emitting devices are the same.

4. The display panel according to claim 2, wherein Two of the first electrodes in one of the first light-emitting devices are arranged in a mirror image structure with respect to each other.

5. The display panel according to claim 1, wherein The plurality of the first light-emitting devices are spaced apart along a first direction and a second direction, and the first direction and the second direction intersect.

6. The display panel according to claim 5, wherein The first direction and the second direction are perpendicular.

7. The display panel according to claim 1, characterized in that, In at least one of the first light-emitting devices, the first electrode, the first light-emitting element and the second electrode are stacked in a third direction, and in at least one of the first light-emitting devices, the first electrode, the first light-emitting element and the second electrode are stacked in a fourth direction, and the third direction and the fourth direction intersect.

8. The display panel according to claim 7, characterized in that, The third direction and the fourth direction are perpendicular.

9. The display panel according to any one of claims 1 to 8, characterized in that The first electrode has a first inclined surface, the first inclined surface is disposed on a side of the first electrode away from the first light-emitting element, and the first inclined surface is inclined with respect to the thickness direction of the display panel so that the light emitted by the first light-emitting element is emitted toward the display surface of the display panel after passing through the first inclined surface.

10. The display panel according to claim 9, wherein, The orthographic projection area of the first inclined surface on the substrate layer is S1, the orthographic projection area of the first light-emitting device on the substrate layer is S2, and 50% ≤ S1 / S2 ≤ 65%.

11. The display panel according to claim 9, wherein The first inclined surface is inclined in a direction away from the substrate layer, and a relief space is formed between the first inclined surface and the substrate layer; the first light-emitting device further includes a support portion, and the support portion is disposed in the relief space.

12. The display panel according to claim 11, wherein The orthographic projection of the support portion on the substrate layer is located within the orthographic projection of the first electrode on the substrate layer.

13. The display panel according to claim 9, wherein The first electrode includes a semi-transmissive and semi-reflective film layer, and the first inclined surface is disposed on the surface of the semi-transmissive and semi-reflective film layer.

14. The display panel according to claim 13, wherein The included angle θ between the first inclined surface and the display surface of the display panel satisfies: 42.5° ≤ θ ≤ 47.5°.

15. The display panel according to claim 13, characterized in that, The included angle θ between the first inclined surface and the display surface of the display panel is 45°.

16. The display panel according to claim 9, wherein The first electrode includes a light-transmitting layer and a light-adjusting layer. The light-transmitting layer is disposed between the first light-emitting element and the light-adjusting layer. The first inclined surface is disposed on a side of the light-transmitting layer away from the first light-emitting element. The light-adjusting layer is disposed on the first inclined surface and is used to adjust the light-emitting direction of the first light-emitting element.

17. The display panel according to claim 16, wherein The light-adjusting layer includes a light-reflecting layer and / or a light-refracting layer. The light-reflecting layer is used to reflect the light emitted by the first light-emitting element to the display surface of the display panel. The light-refracting layer is used to make the light emitted by the first light-emitting element emit light toward the display surface of the display panel after passing through the light-refracting layer.

18. The display panel according to any one of claims 1 to 8, characterized in that, The second electrode has a second inclined surface. The second inclined surface is disposed on a side of the second electrode away from the first light-emitting element. The second inclined surface is inclined with respect to the thickness direction of the display panel, so that the light emitted by the first light-emitting element is emitted toward the display surface of the display panel after passing through the second inclined surface.

19. A display device, characterized in that, It includes the display panel according to any one of claims 1 to 18.

Images