Display panel and display device

Abstract

The invention relates to a display panel and a display device. The display panel comprises a substrate; the array composite layer is located on one side of the substrate, and the array composite layer comprises a plurality of photoelectric driving circuits; the light-emitting functional layer is located on the side, away from the substrate, of the array composite layer, and the light-emitting functional layer comprises a plurality of light-emitting units; the first packaging layer is located on the side, away from the substrate, of the light-emitting functional layer; the photoelectric conversion function layer is located on the side, away from the substrate, of the first packaging layer, the photoelectric conversion function layer comprises a plurality of photoelectric conversion devices, and orthographic projections of the photoelectric conversion devices on the plane where the surfaces, away from the substrate, of the light emitting units are located are first projections; the display panel further comprises a plurality of first open holes, the first open holes at least penetrate through the light-emitting functional layer and the first packaging layer, the photoelectric conversion devices are electrically connected with the corresponding photoelectric driving circuits through the corresponding first open holes, and the first projections are located between every two adjacent light-emitting units. According to the invention, integration of energy saving and visual angle setting can be realized.

Description

Technical Field

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

[0002] With the continuous development of display technologies, organic light-emitting diode (OLED) display devices have been widely used in multiple fields such as flat panel displays, flexible displays, vehicle-mounted displays, and solid-state lighting due to advantages such as a wide color gamut, high contrast ratio, energy conservation, and foldability.

[0003] However, with the development of display technologies and the expansion of application scenarios, how to achieve both energy conservation and viewing angle setting is an urgent problem to be solved. Summary of the Invention

[0004] Based on this, it is necessary to provide a display panel and a display device, aiming to solve the problem of how to achieve both energy conservation and viewing angle setting.

[0005] In a first aspect, an embodiment of the present application provides a display panel, including:

[0006] A substrate;

[0007] An array composite layer located on one side of the substrate, the array composite layer including a plurality of optoelectronic driving circuits;

[0008] A light-emitting functional layer located on the side of the array composite layer away from the substrate, the light-emitting functional layer including a plurality of light-emitting units;

[0009] A first encapsulation layer located on the side of the light-emitting functional layer away from the substrate;

[0010] An optoelectronic conversion functional layer located on the side of the first encapsulation layer away from the substrate, the optoelectronic conversion functional layer including a plurality of optoelectronic conversion devices, and a first projection of the optoelectronic conversion devices on a plane where the surfaces of the plurality of light-emitting units away from the substrate are located;

[0011] Wherein, the display panel further includes a plurality of first openings, the first openings at least penetrate through the light-emitting functional layer and the first encapsulation layer, the optoelectronic conversion devices are electrically connected to corresponding optoelectronic driving circuits through corresponding first openings, and the first projection is located between two adjacent light-emitting units.

[0012] In some embodiments, it further includes:

[0013] A second encapsulation layer located on the side of the optoelectronic conversion functional layer away from the substrate.

[0014] In some embodiments, in a direction perpendicular to the substrate, the second encapsulation layer at least includes an alternating arrangement of a first organic encapsulation film layer and a first inorganic encapsulation film layer; and / or,

[0015] In a direction perpendicular to the plane of the substrate, the first encapsulation layer at least includes a second inorganic encapsulation film layer and a second organic encapsulation film layer arranged in a stacked manner.

[0016] In some embodiments, it further includes:

[0017] A touch function layer, located on a side of the optoelectronic conversion function layer away from the substrate;

[0018] Wherein, in a direction perpendicular to the plane of the substrate, the touch function layer at least includes a touch insulating layer and a touch electrode layer arranged in a stacked manner.

[0019] In some embodiments, in a direction perpendicular to the plane of the substrate, the optoelectronic conversion device includes a first electrode, a PN junction, and a second electrode arranged in a stacked manner in sequence.

[0020] In some embodiments, the first electrode is a transparent electrode, and the second electrode is an opaque electrode.

[0021] In some embodiments, the optoelectronic driving circuit includes an optoelectronic driving capacitor, and the first electrode and the second electrode are respectively electrically connected to two capacitor electrodes of the corresponding optoelectronic driving capacitor.

[0022] In some embodiments, in a direction perpendicular to the plane of the substrate, the distance from the second electrode to the surface of the plurality of light emitting units away from the substrate is a first distance;

[0023] The distance between the first projection and two adjacent edges of the adjacent light emitting units is a second distance;

[0024] The ratio of the first distance to the second distance is greater than or equal to tan40 o .

[0025] In some embodiments, at least some of the optoelectronic conversion devices are interconnected as a whole and have a grid-like structure.

[0026] In a second aspect, based on the same inventive concept, an embodiment of the present application further provides a display device, and the display device includes any one of the display panels provided in the first aspect.

[0027] In an embodiment of the present application, a first encapsulation layer is disposed on a side of the light-emitting functional layer away from the substrate. A photoelectric conversion functional layer is disposed on a side of the first encapsulation layer away from the substrate. The photoelectric conversion functional layer includes a plurality of photoelectric conversion devices. A first projection of the photoelectric conversion device on a plane where the surfaces of the plurality of light-emitting units away from the substrate are located; the display panel further includes a plurality of first openings that penetrate at least the light-emitting functional layer and the first encapsulation layer. The photoelectric conversion device is electrically connected to a corresponding photoelectric drive circuit through a corresponding first opening. The first projection is located between two adjacent light-emitting units. In this way, the integrated functions of narrow viewing angle and energy saving can be achieved simultaneously, and there are many beneficial effects in many aspects. In the first aspect, the first projection is located between two adjacent light-emitting units, so that the photoelectric conversion device does not block the front-view light emitted by the light-emitting unit, and the photoelectric conversion device blocks the large-view (oblique-view) light emitted by the light-emitting unit, so that narrow-view display can be realized. In the second aspect, by controlling the distance between the first projection and two adjacent light-emitting units, and the distance from the photoelectric conversion device to the plane where the surfaces of the plurality of light-emitting units away from the substrate are located in a plane perpendicular to the substrate, the range of the narrow viewing angle can be set, so as to realize the viewing angle design. In the third aspect, the photoelectric conversion device can absorb the large-view (oblique-view) light emitted by the light-emitting unit, convert the light energy into electric energy again, and reuse the large-view light, which has the effect of energy saving. In the fourth aspect, the photoelectric conversion device is electrically connected to a corresponding photoelectric drive circuit through a corresponding first opening. The array composite layer includes a plurality of photoelectric drive circuits, so that the photoelectric conversion function is well integrated into the display panel, simplifies the manufacturing process, and the display panel has the advantages of being thin and light. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0029] Figure 1 It is a schematic cross-sectional structure diagram of a first type of display panel provided by an embodiment of the present application.

[0030] Figure 2 It is a schematic cross-sectional structure diagram of a second type of display panel provided by an embodiment of the present application.

[0031] Figure 3 It is a schematic cross-sectional structure diagram of a third type of display panel provided by an embodiment of the present application.

[0032] Figure 4 It is a schematic cross-sectional structure diagram of a fourth type of display panel provided by an embodiment of the present application.

[0033] Figure 5 This is a schematic diagram of the fifth cross-sectional structure of a display panel provided by an embodiment of the present application.

[0034] Figure 6 This is a top view schematic diagram of a photoelectric conversion layer of a display panel provided by an embodiment of the present application.

[0035] Figure 7 This is a schematic diagram of a display device provided by an embodiment of the present application.

[0036] Reference numerals:

[0037] Display device 200; display panel 100; substrate 11; array composite layer 10; photoelectric drive circuit 1460; photoelectric drive capacitor 14601; first capacitor electrode 142; second capacitor electrode 162; light-emitting functional layer 156; light-emitting unit 156f; first encapsulation layer 30; second inorganic encapsulation film layer 31; second organic encapsulation film layer 32; fourth inorganic encapsulation film layer 33; photoelectric conversion functional layer 50; photoelectric conversion device 50g; first electrode 51; PN junction 52; second electrode 53; first opening 10k; first sub-opening 10k1; second sub-opening 10k2; second encapsulation layer 40; first inorganic encapsulation film layer 41; first organic encapsulation film layer 42; third inorganic encapsulation film layer 43; touch control functional layer 60;

[0038] First plane 156f1; first distance d1; second distance d2; first angle α; first color light-emitting unit 156fR; second color light-emitting unit 156fG; third color light-emitting unit 156fB;

[0039] Semiconductor layer 12; gate insulating layer 13; first metal layer 14; first interlayer insulating layer 15; second metal layer 16; second interlayer insulating layer 17; third metal layer 18; planarization layer 19; first light-emitting unit electrode 21; pixel defining layer 22; thin film transistor T0; active part 121; gate 141; capacitor electrode 161 in pixel drive circuit; source 181; drain 182; pixel defining structure 221; light-emitting layer 25; second light-emitting unit electrode 26. Detailed implementation manners

[0040] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0042] When describing positional relationships, unless otherwise specified, when an element such as a layer, film, or substrate is referred to as being "on" another element, it can be directly on the other element or there can also be intervening elements. Further, when a layer is referred to as being "under" another layer, it can be directly below or there can be one or more intervening elements. It can also be understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or there can also be one or more intervening elements.

[0043] In the case of using "comprising", "having", and "including" as described herein, unless an explicit limiting term such as "only", "consisting of", etc. is used, another component can also be added. Unless otherwise mentioned, terms in the singular form can include the plural form and should not be construed as having a quantity of one.

[0044] It should be understood that although terms such as "first", "second", etc. can be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, the first element can be referred to as the second element, and similarly, the second element can be referred to as the first element.

[0045] It should also be understood that when interpreting an element, although not explicitly described, the element is interpreted as including an error range, and this error range should be within the acceptable deviation range of a specific value determined by those skilled in the art. For example, "about", "approximate", or "substantially" can mean within one or more standard deviations, which is not limited herein.

[0046] In addition, in the specification, the phrase "schematic diagram of planar distribution" refers to the drawing when observing the target part from above, and the phrase "schematic cross-sectional view" refers to the drawing when observing the cross-section intercepted by vertically cutting the target part from the side.

[0047] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements are only drawn by way of example in the drawings and are not necessarily drawn to the actual scale.

[0048] Without departing from the spirit or scope of the present application, various modifications and variations can be made in the present application, which will be apparent to those skilled in the art. Therefore, the present application is intended to cover the modifications and variations of the present application that fall within the scope of the corresponding claims (claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in the present application can be combined with each other without conflict.

[0049] As described in the background art section, the inventors have found through research that there is no display panel that can achieve both energy saving and viewing angle setting. The application scenarios of display panels that can achieve both energy saving and viewing angle setting are broad. For example, for a display panel used in a vehicle, a display panel with a narrow viewing angle is required to achieve the anti-peeping function. At the same time, how to save energy has always been an issue under exploration, but there is no display panel that can simultaneously achieve the integrated functions of a narrow viewing angle and energy saving.

[0050] Based on the above technical problems, the inventors have found through research that the first encapsulation layer is disposed on the side of the light-emitting functional layer away from the substrate, and a photoelectric conversion functional layer is disposed on the side of the first encapsulation layer away from the substrate. The photoelectric conversion functional layer includes a plurality of photoelectric conversion devices. The orthographic projection of the photoelectric conversion device on the plane where the surfaces of the plurality of light-emitting units away from the substrate are located is the first projection. The display panel further includes a plurality of first openings that penetrate at least the light-emitting functional layer and the first encapsulation layer. The photoelectric conversion device is electrically connected to the corresponding photoelectric drive circuit through the corresponding first opening. The first projection is located between two adjacent light-emitting units. In this way, the integrated functions of a narrow viewing angle and energy saving can be achieved simultaneously, and there are beneficial effects in many aspects. In the first aspect, the first projection is located between two adjacent light-emitting units, so that the photoelectric conversion device does not block the direct-viewing light emitted by the light-emitting unit, and the photoelectric conversion device blocks the large-viewing-angle (oblique-viewing-angle) light emitted by the light-emitting unit, thereby enabling narrow-viewing-angle display. In the second aspect, by controlling the distance between the first projection and two adjacent light-emitting units, and the distance from the photoelectric conversion device to the plane where the surfaces of the plurality of light-emitting units away from the substrate are located in the plane perpendicular to the substrate, the range of the narrow viewing angle can be set, thereby achieving viewing angle design. In the third aspect, the photoelectric conversion device can absorb the large-viewing-angle (oblique-viewing-angle) light emitted by the light-emitting unit, convert the light energy into electrical energy again, and reuse the large-viewing-angle light, having an energy-saving effect. In the fourth aspect, the photoelectric conversion device is electrically connected to the corresponding photoelectric drive circuit through the corresponding first opening, and the array composite layer includes a plurality of photoelectric drive circuits, so that the photoelectric conversion function is well integrated into the display panel, simplifying the manufacturing process, and the display panel has the advantages of being thin and light. The multiple embodiments of the present application have the beneficial effects of at least any one of the above four aspects.

[0051] The above is the core idea of this application. Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0052] Please refer to Figures 1 to 6 。 Figure 1 It is a schematic cross-sectional structure diagram of the first type of a display panel provided by an embodiment of this application. Figure 2 It is a schematic cross-sectional structure diagram of the second type of a display panel provided by an embodiment of this application. Figure 3 It is a schematic cross-sectional structure diagram of the third type of a display panel provided by an embodiment of this application. Figure 4 It is a schematic cross-sectional structure diagram of the fourth type of a display panel provided by an embodiment of this application. Figure 5 It is a schematic cross-sectional structure diagram of the fifth type of a display panel provided by an embodiment of this application. Figures 2 to 5 Illustrate by way of example Figure 1 A detailed structure of the array composite layer and the light-emitting functional layer in Figures 2 to 5 However, the structure of the array composite layer of the display panel is not limited to Figures 2 to 5 As shown in the example, the structure of the light-emitting functional layer of the display panel is not limited to Figures 2 to 4 The structures are the same, Figure 3 In Figure 4 It also shows that the optoelectronic conversion device blocks the large-angle light emitted by the light-emitting unit to achieve a narrow viewing angle,

[0053] Figure 6 It is a top view schematic diagram of an optoelectronic conversion layer of a display panel provided by an embodiment of this application.

[0054] The present application provides a display panel 100, which includes a substrate 11, an array composite layer 10, a light-emitting functional layer 156, a first encapsulation layer 30, and a photoelectric conversion functional layer 50. The array composite layer 10 is located on one side of the substrate 11, and the array composite layer 10 includes a plurality of optoelectronic driving circuits 1460. The light-emitting functional layer 156 is located on the side of the array composite layer 10 away from the substrate 11, and the light-emitting functional layer 156 includes a plurality of light-emitting units 156f. The first encapsulation layer 30 is located on the side of the light-emitting functional layer 156 away from the substrate 11. The photoelectric conversion functional layer 50 is located on the side of the first encapsulation layer 30 away from the substrate 11, and the photoelectric conversion functional layer 50 includes a plurality of photoelectric conversion devices 50g. The orthographic projection of the photoelectric conversion device 50g on the plane where the surfaces of the plurality of light-emitting units 156f away from the substrate 11 are located is a first projection. Among them, the display panel 100 further includes a plurality of first openings 10k, and the first openings 10k penetrate at least the light-emitting functional layer 156 and the first encapsulation layer 30. The photoelectric conversion device 50g is electrically connected to the corresponding optoelectronic driving circuit 1460 through the corresponding first opening 10k, and the first projection is located between two adjacent light-emitting units.

[0055] Exemplarily, the photoelectric conversion functional layer 50 includes a plurality of photoelectric conversion devices 50g. The photoelectric conversion devices 50g can absorb light to generate photocurrent and convert light energy into electrical energy.

[0056] Exemplarily, the array composite layer 10 may include a plurality of driving circuits for driving the light-emitting units 156f to emit light and a plurality of signal traces. For example, the array composite layer 10 may include pixel driving circuits. For example, the array composite layer 10 may include a plurality of data signal lines and a plurality of scan driving signal lines, etc.

[0057] Exemplarily, the display panel 100 may be an OLED panel, but is not limited thereto. The display panel 100 may also be other types of display panels. When the display panel 100 is an OLED panel, the light-emitting unit 156f may be a light-emitting device.

[0058] Exemplarily, the first encapsulation layer 30 is disposed between the light-emitting functional layer 156 and the photoelectric conversion functional layer 50. In the manufacturing process of the display panel 100, the production of the first encapsulation layer 30 has been completed before the production of the photoelectric conversion functional layer 50. When the photoelectric conversion functional layer 50 is produced, the first encapsulation layer 30 can protect the light-emitting functional layer 156 from being damaged.

[0059] Exemplarily, the first encapsulation layer 30 is disposed between the light-emitting functional layer 156 and the photoelectric conversion functional layer 50. By controlling the thickness of the first encapsulation layer 30, the distance from the photoelectric conversion device 50g in the plane perpendicular to the plane where the substrate 11 is located to the plane where the surfaces of the plurality of light-emitting units 156f away from the substrate 11 are located can be controlled, so that the range of narrow viewing angles can be set.

[0060] Exemplarily, as Figure 1 shown, for multiple light-emitting units 156f, the plane away from the surface of the substrate 11 is the first plane 156f1, and the orthographic projection of the photoelectric conversion device 50g on the plane away from the surface of the substrate 11 of the multiple light-emitting units 156f is the first projection, that is, the orthographic projection of the photoelectric conversion device 50g on the first plane 156f1 is the first projection.

[0061] Exemplarily, the first projection is located between two adjacent light-emitting units, so that the photoelectric conversion device 50g does not block the front-view light emitted by the light-emitting unit, and the photoelectric conversion device 50g blocks the large-view (oblique-view) light emitted by the light-emitting unit.

[0062] Exemplarily, the first opening 10k penetrates at least through the light-emitting functional layer 156 and the first encapsulation layer 30. The photoelectric conversion device 50g is electrically connected to the corresponding photoelectric drive circuit 1460 through the corresponding first opening 10k. When there are other film layers between the photoelectric conversion device 50g and the photoelectric drive circuit 1460, the first opening 10k can also penetrate through other film layers between the photoelectric conversion device 50g and the photoelectric drive circuit 1460, so that the photoelectric conversion device 50g is electrically connected to the corresponding photoelectric drive circuit 1460 through the corresponding first opening 10k.

[0063] Exemplarily, when the light emitted by the light-emitting unit 156f irradiates the semiconductor material in the photoelectric conversion device 50g, photons are absorbed by the semiconductor material in the photoelectric conversion device 50g, causing electrons to be excited from atoms to form electron-hole pairs. Under the action of the built-in electric field of the PN junction in the photoelectric conversion device 50g, the electrons and holes move in opposite directions respectively, thereby forming a photo-generated electric field opposite to the direction of the potential barrier near the PN junction in the photoelectric conversion device 50g. The photo-generated electric field not only partially cancels the action of the potential barrier electric field, but also generates an electromotive force and current between the P region and the N region, converting light energy into electrical energy, and then supplying power to the load light-emitting unit 156f through the photoelectric drive circuit 1460.

[0064] In an embodiment of the present application, the first encapsulation layer 30 is disposed on a side of the light-emitting functional layer 156 away from the substrate 11. The photoelectric conversion functional layer 50 is disposed on a side of the first encapsulation layer 30 away from the substrate 11. The photoelectric conversion functional layer 50 includes a plurality of photoelectric conversion devices 50g. A first projection of the photoelectric conversion device 50g on a plane where the surfaces of the plurality of light-emitting units 156f away from the substrate 11 are located; the display panel 100 further includes a plurality of first openings 10k. The first openings 10k penetrate at least the light-emitting functional layer 156 and the first encapsulation layer 30. The photoelectric conversion device 50g is electrically connected to the corresponding photoelectric drive circuit 1460 through the corresponding first opening 10k. The first projection is located between two adjacent light-emitting units. In this way, the integrated functions of narrow viewing angle and energy saving can be achieved simultaneously, and there are beneficial effects in many aspects. In the first aspect, the first projection is located between two adjacent light-emitting units, so that the photoelectric conversion device 50g does not block the front-view light emitted by the light-emitting unit, and the photoelectric conversion device 50g blocks the large-view (oblique-view) light emitted by the light-emitting unit, so that narrow-view display can be realized. In the second aspect, by controlling the distance between the first projection and two adjacent light-emitting units, and the distance from the photoelectric conversion device 50g to the plane where the surfaces of the plurality of light-emitting units 156f away from the substrate 11 are located in a plane perpendicular to the substrate 11, the range of the narrow viewing angle can be set, so as to realize the viewing angle design. In the third aspect, the photoelectric conversion device 50g can absorb the large-view (oblique-view) light emitted by the light-emitting unit, convert the light energy into electric energy again, and reuse the large-view light, which has the effect of energy saving. In the fourth aspect, the photoelectric conversion device 50g is electrically connected to the corresponding photoelectric drive circuit 1460 through the corresponding first opening 10k. The array composite layer 10 includes a plurality of photoelectric drive circuits 1460, so that the photoelectric conversion function is well integrated into the display panel 100, simplifies the manufacturing process, and the display panel 100 has the advantages of being thin and light. Multiple embodiments of the present application have at least the beneficial effects of any one of the above four aspects.

[0065] In some embodiments, the display panel 100 further includes a second encapsulation layer 40. The second encapsulation layer 40 is located on a side of the photoelectric conversion functional layer 50 away from the substrate 11.

[0066] Exemplarily, the second encapsulation layer 40 can play a role in protecting the photoelectric conversion functional layer 50, and at the same time play a role in preventing water vapor and oxygen from entering the light-emitting unit 156f through the first opening 10k.

[0067] In some embodiments, in a direction perpendicular to the substrate 11, the second encapsulation layer 40 at least includes an alternately arranged first organic encapsulation film layer 42 and a first inorganic encapsulation film layer 41.

[0068] Exemplarily, the first inorganic encapsulation film layer 41 in the second encapsulation layer 40 can protect the light-emitting unit 156f from moisture and oxygen entering the light-emitting unit 156f through the first opening 10k, and the first organic encapsulation film layer 42 can play a flattening role to provide a flat surface for the fabrication of subsequent processes.

[0069] Exemplarily, the material of the first organic encapsulation film layer 42 may include at least one of resin, polyimide, etc., but is not limited thereto.

[0070] Exemplarily, the material of the first inorganic encapsulation film layer 41 may include at least one of silicon nitride, silicon oxide, silicon oxynitride, etc., but is not limited thereto.

[0071] Exemplarily, Figures 1 to 5 It is schematically shown that the second encapsulation layer 40 includes a first inorganic encapsulation film layer 41, a first organic encapsulation film layer 42, and a third inorganic encapsulation film layer 43 which are sequentially stacked on the side of the photoelectric conversion functional layer 50 away from the substrate 11, but the structure of the second encapsulation layer 40 is not limited thereto.

[0072] In some embodiments, in the direction perpendicular to the plane where the substrate 11 is located, the first encapsulation layer 30 at least includes a second inorganic encapsulation film layer 31 and a second organic encapsulation film layer 32 which are stacked.

[0073] Exemplarily, the second inorganic encapsulation film layer 31 in the first encapsulation layer 30 can protect the light-emitting functional layer 156 from being damaged and prevent moisture and oxygen from entering the light-emitting unit 156f. The second organic encapsulation film layer 32 can provide a flat surface for the fabrication of the subsequent photoelectric conversion functional layer 50.

[0074] Exemplarily, the material of the second organic encapsulation film layer 32 may include at least one of resin, polyimide, etc., but is not limited thereto.

[0075] Exemplarily, the material of the second inorganic encapsulation film layer 31 may include at least one of silicon nitride, silicon oxide, silicon oxynitride, etc., but is not limited thereto.

[0076] Exemplarily, Figures 1 to 5 It is schematically shown that the first encapsulation layer 30 includes a second inorganic encapsulation film layer 31, a second organic encapsulation film layer 32, and a fourth inorganic encapsulation film layer 33 which are sequentially stacked on the side of the light-emitting functional layer 156 away from the substrate 11, but the structure of the first encapsulation layer 30 is not limited thereto.

[0077] In some embodiments, as Figure 5As shown, the display panel 100 further includes a touch function layer 60, and the touch function layer 60 is located on the side of the optoelectronic conversion function layer 50 away from the substrate 11; wherein, in the direction perpendicular to the plane where the substrate 11 is located, the touch function layer 60 at least includes a touch insulating layer and a touch electrode layer arranged in a stacked manner.

[0078] Exemplarily, the touch function layer 60 is located on the side of the optoelectronic conversion function layer 50 away from the substrate 11, and the touch function layer 60 can also play a role in protecting the optoelectronic conversion function layer 50.

[0079] Exemplarily, in the direction perpendicular to the plane where the substrate 11 is located, the touch function layer 60 at least includes a touch insulating layer and a touch electrode layer arranged in a stacked manner. The touch electrode layer can include a plurality of touch electrodes. The structure of the touch function layer 60 is not limited thereto. For example, the touch function layer 60 can include a first touch insulating layer, a first touch electrode layer, and a second touch insulating layer sequentially arranged on the side of the optoelectronic conversion function layer 50 away from the substrate 11. For example, the plurality of touch electrodes can include a plurality of touch driving electrodes and a plurality of touch receiving electrodes.

[0080] Exemplarily, as Figure 5 shown, in some embodiments, the touch function layer 60 is located on the side of the second encapsulation layer 40 away from the substrate 11.

[0081] In some embodiments, as Figures 1 to 5 shown, in the direction perpendicular to the plane where the substrate 11 is located, the optoelectronic conversion device 50g includes a first electrode 51, a PN junction 52, and a second electrode 53 sequentially arranged in a stacked manner.

[0082] Exemplarily, the PN junction 52 can absorb light to generate an optoelectronic signal and convert light energy into electrical energy.

[0083] Exemplarily, the PN junction 52 can include an N-type doped semiconductor layer and a P-type doped semiconductor layer. The structure of the PN junction 52 is not limited thereto.

[0084] Exemplarily, in the direction perpendicular to the plane where the substrate 11 is located, the N-type doped semiconductor layer and the P-type doped semiconductor layer can be arranged in a stacked manner.

[0085] Exemplarily, the materials of the N-type doped semiconductor layer and the P-type doped semiconductor layer in the PN junction 52 can be inorganic materials or organic materials. The material of the P-type doped semiconductor layer can be silicon doped with phosphorus or bis(ethylenedithio)tetrathiafulvalene. The material of the N-type doped semiconductor layer can be silicon doped with boron or fullerene.

[0086] In some embodiments, as Figure 3 shown, the first electrode 51 is a transparent electrode and the second electrode 53 is an opaque electrode.

[0087] Exemplarily, the first electrode 51 is a transparent electrode, such that the photoelectric conversion device 50g can absorb light rays emitted by the light-emitting unit at a large viewing angle (oblique viewing angle) to generate electric energy.

[0088] Exemplarily, the second electrode 53 is an opaque electrode, such that the photoelectric conversion device 50g blocks the light rays emitted by the light-emitting unit at a large viewing angle (oblique viewing angle), thereby enabling a narrow viewing angle display.

[0089] Exemplarily, the material of the first electrode 51 can be a transparent metal oxide, such as indium tin oxide or the like.

[0090] Exemplarily, the material of the second electrode 53 can be an opaque metal, such as aluminum, molybdenum, copper or the like.

[0091] In some embodiments, as Figure 1 and Figure 2 shown, the photoelectric drive circuit 1460 includes a photoelectric drive capacitor 14601, and the first electrode 51 and the second electrode 53 are respectively electrically connected to two capacitor electrodes of the corresponding photoelectric drive capacitor 14601.

[0092] Exemplarily, as Figure 1 and Figure 2 shown, the photoelectric drive capacitor 14601 includes a first capacitor electrode 142 and a second capacitor electrode 162, and the plurality of first openings 10k include a first sub-opening 10k1 and a second sub-opening 10k2.

[0093] The first electrode 51 is electrically connected to the corresponding first capacitor electrode 142 through the first sub-opening 10k1, and the second electrode 53 is electrically connected to the corresponding second capacitor electrode 162 through the second sub-opening 10k2.

[0094] Exemplarily, the first opening 10k can be formed by a laser drilling process.

[0095] Exemplarily, as Figure 1 and Figure 2 shown, the photoelectric conversion device 50g absorbs light rays emitted by the light-emitting unit at a large viewing angle (oblique viewing angle) to generate a photocurrent, and the charge is stored in the photoelectric drive capacitor 14601. The photoelectric drive capacitor 14601 is also electrically connected to the corresponding light-emitting unit 156f (not shown in the figure), and the photoelectric drive capacitor 14601 can supply charge to the light-emitting unit 156f, enabling the light-emitting unit 156f to continuously emit light, thereby saving electric energy.

[0096] In some embodiments, as Figure 3 and Figure 4As shown, in the direction perpendicular to the plane of the substrate 11, the distance from the second electrode 53 to the surface of the plurality of light-emitting units 156f away from the substrate 11 is the first distance d1; the distance between the first projection and two adjacent edges of the adjacent light-emitting units is the second distance d2; the ratio of the first distance to the second distance is greater than or equal to tan40 o .

[0097] Exemplarily, as Figure 3 shown, the photoelectric conversion device 50g blocks the light rays with a large viewing angle (oblique viewing angle) emitted by the light-emitting units, so that narrow-view display can be achieved. As Figure 4 shown, the relative position setting relationship between the photoelectric conversion device 50g and the light-emitting unit 156f is schematically shown. In Figure 4 , in the direction perpendicular to the plane of the substrate 11, the distance from the second electrode 53 to the surface of the plurality of light-emitting units 156f away from the substrate 11 is the first distance d1. In Figure 4 , the distance between the first projection and two adjacent edges of the adjacent light-emitting units is the second distance d2. Figure 4 shows a right triangle where the first distance d1 and the second distance d2 are located, and the photoelectric conversion device 50g blocks the light rays with an angle greater than or equal to the first angle α.

[0098] Exemplarily, the ratio of the first distance d1 to the second distance d2 is greater than or equal to tan40 o , such that the first angle α is equal to 40 o , and the photoelectric conversion device 50g blocks the light rays with an angle greater than or equal to 40 o .

[0099] Exemplarily, in some embodiments, the ratio of the first distance d1 to the second distance d2 is greater than or equal to any one of tan40 o , tan43 o , tan45 o , tan48 o , tan50 o , tan55 o , tan60 o , tan70 o .

[0100] In some embodiments, as Figure 6 shown, at least some of the photoelectric conversion devices 50g are connected to form a whole and are in a grid structure.

[0101] Exemplarily, as Figure 6 shown, Figure 6Also shown is the orthographic projection of a plurality of photoelectric conversion devices 50g on the first plane 156f1. At least a partial number of the photoelectric conversion devices 50g are interconnected as a whole and are in a grid-like structure. The orthographic projection of the grid-like structure on the first plane 156f1 is spaced apart from the plurality of light-emitting units 156f. The grid-like structure can block light at a large viewing angle from various azimuth angles, thereby enabling a narrow viewing angle design at various azimuth angles.

[0102] Exemplarily, as Figure 6 shown, the plurality of light-emitting units 156f include a first-color light-emitting unit 156fR, a second-color light-emitting unit 156fG, and a third-color light-emitting unit 156fB. In some embodiments, the first-color light-emitting unit 156fR, the second-color light-emitting unit 156fG, and the third-color light-emitting unit 156fB may be a red light-emitting device, a green light-emitting device, and a blue light-emitting device, respectively.

[0103] It should be noted that Figures 2 to 5 Exemplarily shown is Figure 1 a detailed structure of the array composite layer 10 and the light-emitting functional layer 156 of the display panel 100 in []. The display panel 100 includes a substrate 11, a semiconductor layer 12, a gate insulating layer 13, a first metal layer 14, a first interlayer insulating layer 15, a second metal layer 16, a second interlayer insulating layer 17, a third metal layer 18, a planarization layer 19, a plurality of first light-emitting unit electrodes 21, and a pixel definition layer 22, which are sequentially stacked. The semiconductor layer 12 includes an active portion 121 of the thin-film transistor T0. The first metal layer 14 includes a gate 141 and a first capacitor electrode 142 of the thin-film transistor T0. The second metal layer 16 includes a capacitor electrode 161 and a second capacitor electrode 162 in the pixel driving circuit. The third metal layer 18 includes a source 181 and a drain 182 of the thin-film transistor T0. The pixel definition layer 22 includes a plurality of pixel definition structures 221 and a plurality of pixel openings surrounded by the pixel definition structures 221.

[0104] It should be noted that, as Figures 2 to 5 shown, the display panel 100 further includes a light-emitting layer 25 and a second light-emitting unit electrode 26. The light-emitting layer 25 is at least partially located within the pixel opening. The second light-emitting unit electrode 26 is located on the side of the light-emitting layer 25 and the pixel definition structure 221 away from the substrate 11. The light-emitting unit 156f includes a first light-emitting unit electrode 21, a light-emitting layer 25, and a second light-emitting unit electrode 26. One of the first light-emitting unit electrode 21 and the second light-emitting unit electrode 26 is an anode, and the other is a cathode. For example, the first light-emitting unit electrode 21 is an anode and the second light-emitting unit electrode 26 is a cathode.

[0105] It should be noted that, as Figures 2 to 5As shown, the first encapsulation layer 30 is disposed on a side of the second light-emitting unit electrode 26 away from the substrate 11, the photoelectric conversion functional layer 50 is disposed on a side of the first encapsulation layer 30 away from the substrate 11, and the second encapsulation layer 40 is disposed on a side of the photoelectric conversion functional layer 50 away from the substrate 11.

[0106] It should be noted that, as Figure 6 shown, the touch control functional layer 60 is disposed on a side of the second encapsulation layer 40 away from the substrate 11. The display panel 100 may further include a cover glass (CG), and the cover glass may be attached to a side of the touch control functional layer 60 away from the substrate 11 through an optical adhesive layer. The material of the cover glass may be glass or ultra-thin glass (UTG).

[0107] It should be noted that, as Figures 2 to 5 shown, the first capacitive electrode 142 is formed by patterning the first metal layer 14, and the second capacitive electrode 162 is formed by patterning the second metal layer 16. However, it is not limited thereto. For example, in some embodiments, the second capacitive electrode 162 is formed by patterning the third metal layer 18.

[0108] It should be noted that, as Figures 2 to 5 shown, the first sub-opening 10k1 penetrates through the first encapsulation layer 30, the second light-emitting unit electrode 26, the pixel defining structure 221, the planarization layer 19, the second interlayer insulating layer 17, and the first interlayer insulating layer 15; the second sub-opening 10k2 penetrates through the first encapsulation layer 30, the second light-emitting unit electrode 26, the pixel defining structure 221, the planarization layer 19, and the second interlayer insulating layer 17.

[0109] It should be noted that, as Figures 2 to 5 shown, the array composite layer 10 includes a semiconductor layer 12, a gate insulating layer 13, a first metal layer 14, a first interlayer insulating layer 15, a second metal layer 16, a second interlayer insulating layer 17, a third metal layer 18, and a planarization layer 19. However, the film layer structure of the array composite layer 10 is not limited thereto.

[0110] Please refer to Figure 7 , Figure 7 which is a schematic diagram of a display device provided by an embodiment of the present application.

[0111] In a second aspect, based on the same inventive concept, the present application further provides a display device 200. The display device 200 includes the display panel 100 of any one of the above, or the display device 200 includes the display panel 100 combined with several of the above features.

[0112] Exemplarily, the display device 200 also has the beneficial effects of the display panel 100 in the above embodiments. The same parts can be understood with reference to the explanation of the display panel 100 above, and will not be repeated hereinafter.

[0113] Exemplarily, the display device 200 provided by the embodiments of the present application may be Figure 7 the vehicle shown in the figure (a vehicle-mounted display panel is provided on the vehicle), or any electronic product with a display function, including but not limited to the following categories: television sets, laptop computers, desktop monitors, tablet computers, digital cameras, smart bracelets, smart glasses, vehicle-mounted displays, industrial control devices, medical display screens, touch interaction terminals, etc. The embodiments of the present application do not make special limitations thereto.

[0114] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0115] The above-described embodiments only represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A display panel, characterized in that: include: substrate; An array composite layer, located on one side of the substrate, the array composite layer comprising a plurality of photoelectric drive circuits; A light-emitting functional layer, located on a side of the array composite layer away from the substrate, the light-emitting functional layer comprising a plurality of light-emitting units; A first encapsulation layer is located on a side of the light-emitting functional layer away from the substrate; a photoelectric conversion functional layer, located on a side of the first encapsulation layer away from the substrate, the photoelectric conversion functional layer comprising a plurality of photoelectric conversion devices, and an orthographic projection of the photoelectric conversion devices on a plane where surfaces of the plurality of light-emitting units away from the substrate are located is a first projection; Among them, the display panel also includes a plurality of first openings, the first openings at least penetrate the light-emitting functional layer and the first packaging layer, the photoelectric conversion device is electrically connected to the corresponding photoelectric driving circuit through the corresponding first opening, and the first projection is located between two adjacent light-emitting units.

2. The display panel according to claim 1, characterized in that: Also includes: The second encapsulation layer is located on a side of the photoelectric conversion functional layer away from the substrate.

3. The display panel according to claim 2, characterized in that: In a direction perpendicular to the substrate, the second encapsulation layer at least includes a first organic encapsulation film layer and a first inorganic encapsulation film layer that are alternately arranged; and / or, In a direction perpendicular to the plane where the substrate is located, the first encapsulation layer at least includes a second inorganic encapsulation film layer and a second organic encapsulation film layer which are stacked.

4. The display panel according to claim 1, characterized in that: Also includes: A touch function layer, located on a side of the photoelectric conversion function layer away from the substrate; Wherein, in a direction perpendicular to the plane where the substrate is located, the touch function layer at least includes a touch insulation layer and a touch electrode layer which are stacked.

5. The display panel according to claim 1, characterized in that: In a direction perpendicular to the plane where the substrate is located, the photoelectric conversion device includes a first electrode, a PN junction and a second electrode which are stacked in sequence.

6. The display panel according to claim 5, characterized in that: The first electrode is a transparent electrode, and the second electrode is an opaque electrode.

7. The display panel according to claim 5, characterized in that: The photoelectric driving circuit includes a photoelectric driving capacitor, and the first electrode and the second electrode are electrically connected to two capacitor electrodes of the corresponding photoelectric driving capacitor respectively.

8. The display panel according to claim 5, characterized in that: In a direction perpendicular to the plane where the substrate is located, the distance from the second electrode to the surface of the plurality of light-emitting units away from the substrate is a first distance; The distance between the first projection and two adjacent edges of the adjacent light-emitting units is a second distance; The ratio of the first distance to the second distance is greater than or equal to tan40 o .

9. The display panel according to claim 1, characterized in that: At least a portion of the photoelectric conversion devices are interconnected to form a whole and present a grid structure.

10. A display device, characterized in that: The invention comprises the display panel as claimed in any one of claims 1 to 9.

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