Display panel and display device

Abstract

A display panel (100) and a display device, which relate to the technical field of display, and are used for improving the wide-viewing-angle privacy protection effect of the display panel. The display panel (100) comprises: a substrate (1); a plurality of light-emitting elements located on one side of the substrate (1), wherein the light-emitting elements comprise first light-emitting elements (21), each first light-emitting element (21) comprising a first light-emitting portion (211) and a second light-emitting portion (212); a pixel definition layer (3), which is located on one side of the substrate (1), the pixel definition layer (3) comprising first openings and second openings, wherein the first light-emitting portions (211) are at least partially located in the first openings, and the second light-emitting portions (212) are at least partially located in the second openings; and a touch control layer (4), which is located on the sides of the light-emitting elements away from the substrate (1), the touch control layer (4) comprising first touch control sub-portions (41) and third openings, wherein in a direction perpendicular to the plane where the substrate is located, the first touch control sub-portions (41) at least partially overlap with the first openings, and the third openings at least partially overlap with the second openings.

Description

Display panel and display device

[0001] This invention claims priority to Chinese Patent Application No. 202410997757.6, filed with the State Intellectual Property Office of China on July 23, 2024, entitled “Display Panel and Display Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of display technology, and more specifically to a display panel and a display device. Background Technology

[0003] With the continuous development of display technology, consumers' demands for displays are constantly increasing. Currently, various types of displays, including LCD screens and OLED screens, are emerging in large numbers and have developed rapidly. Based on this, display technologies such as 3D display, touch display technology, curved display, ultra-high resolution display, and privacy-protected display are constantly emerging.

[0004] Currently, researchers are paying close attention to improving the privacy protection performance of active-matrix displays, including organic light-emitting diodes (OLEDs).

[0005] Summary of the Invention

[0006] In view of this, embodiments of the present invention provide a display panel and a display device to improve the privacy protection effect of the display panel from a wide viewing angle.

[0007] In a first aspect, embodiments of the present invention provide a display panel, comprising:

[0008] Substrate;

[0009] Multiple light-emitting elements are located on one side of a substrate. The light-emitting elements include a first light-emitting element, which includes a first light-emitting portion and a second light-emitting portion.

[0010] A pixel definition layer is located on one side of a substrate. The pixel definition layer includes a first opening and a second opening. At least a portion of a first light-emitting part is located in the first opening, and at least a portion of a second light-emitting part is located in the second opening.

[0011] The touch layer is located on the side of the light-emitting element away from the substrate, and includes a first sub-touch portion and a third opening;

[0012] Along a direction perpendicular to the plane of the substrate, the first sub-touch portion and the first opening at least partially overlap, and the third opening and the second opening at least partially overlap.

[0013] Secondly, embodiments of the present invention provide a display device, including the display panel described above.

[0014] The display panel and display device provided in this embodiment of the invention, by providing a touch layer, and providing a first sub-touch portion and a third opening in the touch layer, at least partially overlap the first sub-touch portion and the first opening along a direction perpendicular to the plane of the substrate. A portion of the small-angle light emitted by the first light-emitting portion, at least partially located within the first opening, can be blocked by the first sub-touch portion, thereby preventing this portion of light from escaping the display panel. Furthermore, in this embodiment of the invention, the first sub-touch portion has a high reflectivity, and can act as a reflective layer to reflect at least once the portion of the small-angle light incident upon it. The reflected light can bypass the first sub-touch portion and escape from the display panel, thereby improving the light utilization rate of the first light-emitting portion, enhancing the light intensity of the large-angle light emitted by the first light-emitting portion and emitted from the display panel, thus interfering more significantly with the light emitted by the second light-emitting portion at large viewing angles, reducing the readability of the display panel at large viewing angles beyond the visible angle, improving the privacy protection effect of the display panel at large viewing angles, and further reducing the power consumption of the display panel.

[0015] Moreover, based on the above-mentioned configuration provided by the embodiments of the present invention, the first sub-touch unit is equivalent to being reused as a dimming component for dimming the emitted light of the first light-emitting unit, thereby eliminating the need to add additional components to adjust the emitted light of the first light-emitting unit. This simplifies the structure of the display panel, reduces the manufacturing process of the display panel, and lowers the cost of the display panel.

[0016] In addition, embodiments of the present invention can enable the first sub-touch unit to transmit touch signals, making the first sub-touch unit part of the touch electrode. In this case, the arrangement of the first sub-touch unit can increase the area of ​​the touch electrode, thereby reducing the impedance of the touch electrode. When performing touch operations on the display panel, this is beneficial to improving touch sensitivity and enhancing the touch experience of the display panel.

[0017] Furthermore, the third opening and the second opening at least partially overlap in a direction perpendicular to the plane of the substrate. At least a portion of the small-angle light emitted by the second light-emitting part, which is at least partially located within the second opening, can be emitted through the third opening, thereby preventing the small-angle light emitted by the second light-emitting part from being blocked by the touch layer, which is beneficial to improving the display effect of the display panel at a normal viewing angle.

[0018] Furthermore, the third opening can improve the light transmittance of the touch layer, thereby increasing the light transmittance of the display panel. When the display panel is used in a display device equipped with optical elements such as fingerprint recognition sensors, cameras, and iris sensors, it can enhance the light intensity received by the optical elements and improve the working performance of the optical elements. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 is a top view of a display panel provided in an embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of a cross section along BB' in Figure 1;

[0022] Figure 3 is a schematic diagram of a touch display panel provided in an embodiment of the present invention;

[0023] Figure 4 is a schematic diagram of a display device for fingerprint recognition provided in an embodiment of the present invention;

[0024] Figure 5 is a top view of the touch conductive layer in Figure 1;

[0025] Figure 6 is a top view of another display panel provided in an embodiment of the present invention;

[0026] Figure 7a is a schematic diagram of a first pixel driving circuit for driving a first light-emitting part according to an embodiment of the present invention;

[0027] Figure 7b is a timing diagram of a first pixel driving circuit provided in an embodiment of the present invention;

[0028] Figure 7c is a timing diagram of another first pixel driving circuit provided in an embodiment of the present invention;

[0029] Figure 8a is a schematic diagram of a second pixel driving circuit provided in an embodiment of the present invention;

[0030] Figure 8b is a timing diagram of a second pixel driving circuit provided in an embodiment of the present invention;

[0031] Figure 9 is a schematic diagram showing the positional relationship between a first sub-touch unit and a first opening according to an embodiment of the present invention;

[0032] Figure 10 is a schematic diagram showing the positional relationship between the first sub-touch unit and the first opening according to another embodiment of the present invention;

[0033] Figure 11 is a schematic diagram showing the positional relationship between a third opening and a second opening according to an embodiment of the present invention;

[0034] Figure 12 is a schematic diagram showing the positional relationship between the third opening and the second opening according to another embodiment of the present invention;

[0035] Figure 13 is a cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention;

[0036] Figure 14 is a top view of a first dimming unit, a first sub-touch unit, and a first light-emitting unit provided in an embodiment of the present invention.

[0037] Figure 15 is a cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention;

[0038] Figure 16 is a top view of another first dimming unit, first sub-touch unit and first light-emitting unit provided in an embodiment of the present invention;

[0039] Figure 17 is a top view schematic diagram of a third dimming unit, a second sub-touch unit, and a second light-emitting unit provided in an embodiment of the present invention.

[0040] Figure 18 is a cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention;

[0041] Figure 19 is a top view of another third dimming unit, second sub-touch unit and second light-emitting unit provided in an embodiment of the present invention;

[0042] Figure 20 is a top view of another display panel provided in an embodiment of the present invention;

[0043] Figure 21 is a schematic diagram showing the positional relationship between a display panel and a windshield according to an embodiment of the present invention;

[0044] Figure 22 is a schematic diagram of a display device provided in an embodiment of the present invention. Detailed Implementation

[0045] To better understand the technical solution of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0046] It should be understood that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0047] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0048] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0049] This invention provides a display panel, as shown in FIG1, which is a top view of the display panel provided in this invention. FIG2 is a cross-sectional view along BB' of FIG1. ​​The display panel 100 includes a substrate 1 and a plurality of light-emitting elements located on one side of the substrate 1. The light-emitting elements include a first light-emitting element 21, which includes a first light-emitting portion 211 and a second light-emitting portion 212. The first light-emitting portion 211 and the second light-emitting portion 212 are capable of emitting light of a predetermined color. Exemplarily, the first light-emitting portion 211 and the second light-emitting portion 212 include any one of organic light-emitting materials, quantum dot light-emitting materials, and inorganic light-emitting materials. This invention does not impose specific limitations on the materials of the first light-emitting portion 211 and the second light-emitting portion 212.

[0050] As exemplarily shown in Figures 1 and 2, the first light-emitting part 211 and the second light-emitting part 212 are arranged adjacent to each other. Adjacent arrangement means that there are no other light-emitting parts between them.

[0051] As shown in Figure 2, the display panel 100 also includes a pixel definition layer 3, which is located on one side of the substrate 1. The pixel definition layer 3 includes a first opening OP11 and a second opening OP12. At least a portion of the first light-emitting part 211 is located in the first opening OP11, and at least a portion of the second light-emitting part 212 is located in the second opening OP12.

[0052] As exemplarily shown in FIG2, the display panel 100 further includes a first electrode 201, a second electrode 202, and a third electrode 203. The first electrode 201 and the second electrode 202 are located on the side of the pixel definition layer 3 near the substrate 1. A first opening OP11 exposes at least a portion of the first electrode 201, and a second opening OP12 exposes at least a portion of the second electrode 202. The first electrode 201 and the second electrode 202 are spaced apart. The third electrode 203 is located on the side of the first light-emitting portion 211 and the second light-emitting portion 212 away from the substrate 1. Exemplarily, the first electrode 201 and the second electrode 202 can serve as anodes, and the third electrode 203 can serve as cathodes. The orthographic projection of the third electrode 203 onto the plane of the substrate 1 covers the first light-emitting portion 211 and the second light-emitting portion 212. That is, the third electrode 203 can be formed as a whole layer structure covering multiple light-emitting portions.

[0053] For example, the display modes of the display panel 100 provided in this embodiment of the invention include a privacy mode and a public mode.

[0054] In privacy mode, both the first light-emitting part 211 and the second light-emitting part 212 emit light. For users at a wide viewing angle, the wide-angle light emitted by the first light-emitting part 211 can interfere with the wide-angle light emitted by the second light-emitting part 212, thus blurring or disrupting the information displayed on the display panel 100 at wide viewing angles. In other words, users at wide viewing angles may not be able to clearly see the displayed image on the display panel, thereby achieving a wide-viewing-angle privacy effect. Here, wide-angle light refers to light with a large angle between its propagation direction and the normal direction of the substrate 1. Viewing angle refers to the angle between the user's line of sight and the normal direction of the substrate 1.

[0055] In common mode, the first light-emitting part 211 does not emit light, while the second light-emitting part 212 emits light. For a user at a normal viewing angle, the small-angle light emitted by the second light-emitting part 212 can enter the eye, allowing the user to view the display screen 100. For a user at a wide viewing angle, the large-angle light emitted by the second light-emitting part 212 can enter the user's eye, allowing the user to still view the display screen 100 even at a wide viewing angle. Here, small-angle light refers to light whose propagation direction has a small angle with the normal direction of the substrate 1.

[0056] As shown in Figures 1 and 2, the display panel 100 further includes a touch layer 4, which is located on the side of the light-emitting element away from the substrate 1. The touch layer 4 includes a first sub-touch portion 41 and a third opening OP22. Exemplarily, in an embodiment of the present invention, the first sub-touch portion 41 can transmit touch signals.

[0057] Optionally, the display panel 100 may employ a self-contained touchscreen.

[0058] Alternatively, the display panel 100 can also employ a mutual capacitance touch, as shown in Figure 3. Figure 3 is a schematic diagram of a touch display panel provided in an embodiment of the present invention. The display panel 100 includes a first touch electrode 411 and a second touch electrode 412. One of the first touch electrode 411 and the second touch electrode 412 is a touch driving electrode, and the other is a touch sensing electrode. The touch driving electrode is used to transmit touch driving signals, and the touch sensing electrode is used to transmit touch sensing signals. In this case, the aforementioned first sub-touch unit 41 can participate in the touch operation as part of the first touch electrode 411, or the first sub-touch unit 41 can also participate in the touch operation as part of the second touch electrode 412. In other words, the first sub-touch unit 41 can transmit touch driving signals or touch sensing signals. Figure 1 can be seen as an enlarged schematic diagram of region Q in Figure 3.

[0059] For example, as shown in FIG3, the first touch electrode 411 includes a first main touch electrode 4111 and a first connecting electrode 4112 electrically connected, and the second touch electrode 412 includes a second main touch electrode 4121 and a second connecting electrode 4122 electrically connected.

[0060] Optionally, as shown in FIG3, the display panel 100 includes a first conductive layer 401 and a second conductive layer 402, and a touch insulating layer (not shown in FIG3) located between the two. In an optional embodiment, the present invention embodiment may have the first main touch electrode 4111, the second main touch electrode 4121 and the second connecting electrode 4122 disposed on the same layer of the first conductive layer 401, and the first connecting electrode 4112 located on the second conductive layer 402.

[0061] For example, the touch layer 4 includes the first conductive layer 401 and / or the second conductive layer 402. That is, in this embodiment of the invention, the first sub-touch portion 41 and the third opening OP22 can be disposed in at least one of the first conductive layer 401 and the second conductive layer 402. FIG2 illustrates the first sub-touch portion 41 and the third opening OP22 disposed in the first conductive layer 401. For example, as shown in FIG2, the third opening OP22 can penetrate through the first conductive layer 401. Optionally, the first sub-touch portion 41 and the third opening OP22 can be located in the first main touch electrode 4111, or they can be located in the second main touch electrode 4121.

[0062] As shown in Figure 2, the first sub-touch portion 41 and the first opening OP11 at least partially overlap along a direction perpendicular to the plane of the substrate 1. When the first light-emitting portion 211 is lit and emits light, a portion of the small-angle light L111 emitted by the first light-emitting portion 211 can be blocked by the first sub-touch portion 41, thereby preventing this portion of light from escaping the display panel 100. Furthermore, in this embodiment of the invention, the first sub-touch unit 41 has a high reflectivity. The first sub-touch unit 41 can act as a reflective layer to reflect at least once a portion of the small-angle light L112 incident on it. The reflected light can bypass the first sub-touch unit 41 and be emitted from the display panel 100, thereby improving the light utilization rate of the first light-emitting unit 211 and enhancing the light intensity of the large-angle light emitted from the display panel 100. This allows the emitted light from the first light-emitting unit 211 to interfere with the light emitted by the second light-emitting unit 212 to a greater extent at a wide viewing angle, reducing the readability of the display panel 100 at a wide viewing angle outside the visible angle, improving the privacy protection effect of the display panel 100 at a wide viewing angle, and also reducing the power consumption of the display panel 100.

[0063] Moreover, based on this configuration, the first sub-touch unit 41 is essentially reused as a dimming component to dim the emitted light of the first light-emitting unit 211, thus eliminating the need for additional components to adjust the emitted light of the first light-emitting unit 211. This simplifies the structure of the display panel 100 and reduces the manufacturing process of the display panel 100, thereby lowering the cost of the display panel 100.

[0064] In addition, embodiments of the present invention can enable the first sub-touch unit 41 to transmit touch signals, making the first sub-touch unit 41 part of the touch electrode. In this case, the arrangement of the first sub-touch unit 41 can increase the area of ​​the touch electrode, thereby reducing the impedance of the touch electrode. When performing touch operation on the display panel 100, it is beneficial to improve touch sensitivity and improve the touch experience of the display panel 100.

[0065] As shown in Figures 1 and 2, the third opening OP22 and the second opening OP12 at least partially overlap in a direction perpendicular to the plane of the substrate 1. When the second light-emitting part 212 is lit and emits light, as shown in Figure 2, at least a portion of the small-angle light L21 emitted by the second light-emitting part 212 can be emitted through the third opening OP22, thereby preventing the small-angle light L21 emitted by the second light-emitting part 212 from being blocked by the touch layer 4, which is beneficial to improving the display effect of the display panel 100 at a normal viewing angle.

[0066] Furthermore, the third opening OP22 can improve the light transmittance of the touch layer 4, thereby increasing the light transmittance of the display panel 100. When the display panel 100 is used in a display device equipped with optical elements such as fingerprint recognition sensors, cameras, and iris sensors, the light intensity received by the optical elements can be enhanced, improving the working performance of the optical elements. Taking a display device with fingerprint recognition function as an example, as shown in Figure 4, which is a schematic diagram of a display device for fingerprint recognition provided by an embodiment of the present invention, when performing fingerprint recognition on the display device, the light emitted by the fingerprint recognition light source, such as the light-emitting element 2, is reflected by the finger F pressed on the light-emitting surface of the display device. At least part of the reflected light can enter the fingerprint recognition sensor 10 through the third opening OP22. Optionally, the fingerprint recognition sensor 10 can be located on the side of the pixel definition layer 3 away from the touch layer 4. For example, the fingerprint recognition sensor 10 can be disposed on the side of the substrate 1 away from the pixel definition layer 3. Based on this arrangement, the light intensity of the fingerprint reflected light received by the fingerprint recognition sensor 10 can be increased, which is beneficial to improving the sensitivity and accuracy of fingerprint recognition.

[0067] Optionally, as shown in Figures 1, 2, and 5, Figure 5 is a top view of the touch conductive layer in Figure 1. The touch layer 4 further includes a fourth opening OP21 and a second sub-touch portion 42. The second sub-touch portion 42 at least partially surrounds the third opening OP22. The orthographic projection of the fourth opening OP21 onto the plane of the substrate 1 covers the first opening (not shown in Figure 5). The arrangement of the fourth opening OP21 can further increase the light transmittance of the touch layer 4, thereby improving the light transmittance of the display panel 100.

[0068] For example, as shown in Figures 1, 2 and 5, the first sub-touch electrode 41 is located within the fourth opening OP21.

[0069] Optionally, as shown in Figures 1 and 5, the first sub-touch unit 41 can be electrically connected to the non-opening portion of the touch layer 4 via the connecting portion 400. For example, the first sub-touch unit 41 can be electrically connected to the non-opening portion of the touch layer 4 via one or more connecting portions 400; the number of connecting portions 400 is not limited in this embodiment of the invention.

[0070] Optionally, as shown in Figure 6, which is a top view schematic diagram of another display panel provided in an embodiment of the present invention, the width d1 of the second sub-touch portion 42 can be made smaller than the width d2 of the third opening OP22 to further increase the light transmission area of ​​the touch layer 4, thereby improving the light transmittance of the touch layer 4. The width direction of the third opening OP22 is parallel to the width direction of the second sub-touch portion 42, and the width direction of the second sub-touch portion 42 is perpendicular to its extension direction.

[0071] For example, as shown in FIG6, the second sub-touch portion 42 includes a first portion 421 and a second portion 422 whose extension directions intersect. The first portion 421 and the second portion 422 intersect to define the third opening OP22. In this embodiment of the invention, the widths of the first portion 421 and the second portion 422 may both be smaller than the width of the third opening OP22.

[0072] For example, as shown in FIG6, the first sub-touch unit 41 can be connected to the second sub-touch unit 42.

[0073] Optionally, the touch layer 4 comprises a metal or a transparent metal oxide, wherein the metal comprises an alloy of any one or more of molybdenum (Mo), aluminum (Al), copper (Cu), and titanium (Ti). The transparent metal oxide comprises indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), and indium zinc tin oxide (IZTO).

[0074] For example, the touch layer 4 may include a single-layer structure or a multi-layer structure stacked together. For instance, in embodiments of the present invention, the touch layer 4 may be configured as a three-layer structure including a stacked titanium layer, an aluminum layer, and a titanium layer.

[0075] Optionally, as shown in FIG2, the display panel 100 further includes an encapsulation layer 5, wherein the touch layer 4 is located on the side of the encapsulation layer 5 away from the substrate 1. Exemplarily, the encapsulation layer 5 includes a first inorganic encapsulation layer 51, an organic encapsulation layer 52, and a second inorganic encapsulation layer 53 stacked together.

[0076] For example, embodiments of the present invention can drive the first light-emitting part 211 and the second light-emitting part 212 separately. In an optional embodiment, as shown in FIG7a, FIG7a is a schematic diagram of a first pixel driving circuit for driving the first light-emitting part provided by an embodiment of the present invention. The display panel 100 further includes a first pixel driving circuit 601, which includes a first light-emitting control module 61, a second light-emitting control module 62, a gate reset module 63, an anode reset module 64, a data writing module 65, a threshold compensation module 66, and a storage capacitor Cst.

[0077] Referring to Figures 7a and 7b, Figure 7b is a timing diagram of a first pixel driving circuit provided in an embodiment of the present invention. The gate reset module 63 includes a gate reset transistor M1, which is electrically connected between the first reset signal line Ref1 and the gate of the driving transistor M0. It is used to reset the gate of the driving transistor M0 in response to an effective level provided by the first scan signal line S1. The anode reset module 64 includes an anode reset transistor M2, which is electrically connected between the second reset signal line Ref2 and the second light-emitting part 212. It is used to reset the anode voltage of the second light-emitting part 212 in response to an effective level provided by the second scan signal line S2. The data writing module 65 includes a data writing transistor M3, which is electrically connected between the data line Data and the first terminal of the driving transistor M0. The threshold compensation module 66 includes a threshold compensation transistor M4, which is electrically connected between the second terminal of the driving transistor M0 and the gate of the driving transistor M0. The data writing transistor M3 and the threshold compensation transistor M4 are used to write the data voltage to the gate of the driving transistor M0 in response to the effective level provided by the second scan signal line S2, and to perform threshold compensation on the driving transistor M0.

[0078] The first light-emitting control module 61 includes a first light-emitting control transistor M5, which is electrically connected between the power signal line PVDD and the first terminal of the driving transistor M0. The second light-emitting control module 62 includes a second light-emitting control transistor M6, which is electrically connected between the second terminal of the driving transistor M0 and the first light-emitting part 211.

[0079] For example, in privacy mode, as shown in FIG7b, the first pixel driving circuit 601 responds to the enable level provided by the first light emission control signal line E1, and transmits the driving current converted by the driving transistor M0 to the first light emission part 211, driving the first light emission part 211 to emit light.

[0080] In common mode, as shown in FIG7b, the first pixel driving circuit 601 responds to the non-enable level provided by the first light emission control signal line E1, controlling the transmission path between the first pixel driving circuit 601 and the first light-emitting part 211 to be turned off, so that the first light-emitting part 211 does not emit light, thereby reducing the power consumption of the display panel 100. Alternatively, as shown in FIG7c, FIG7c is a timing diagram of another first pixel driving circuit provided by an embodiment of the present invention. In this embodiment of the present invention, the first light emission control signal line E1 can also transmit an enable level in common mode. In this case, the data line Data can transmit a data voltage that makes the driving current 0, so that the first light-emitting part 211 does not emit light.

[0081] When driving the second light-emitting part 212, optionally, the embodiment of the present invention may adopt the same structure as the first pixel driving circuit 601 shown in FIG7a, or it may adopt a different structure from the first pixel driving circuit 601 shown in FIG7a.

[0082] In another optional embodiment, as shown in FIG8a, FIG8a is a schematic diagram of a second pixel driving circuit provided in an embodiment of the present invention. The second pixel driving circuit 602 includes a driving transistor M0, a third light-emitting control module 71 and a fourth light-emitting control module 72, wherein the third light-emitting control module 71 is electrically connected between the driving transistor M0 and the first light-emitting part 211, and the fourth light-emitting control module 72 is electrically connected between the driving transistor M0 and the second light-emitting part 212.

[0083] In privacy mode, both the third light-emitting control module 71 and the fourth light-emitting control module 72 are turned on so that both the first light-emitting part 211 and the second light-emitting part 212 emit light. The large-angle light emitted by the first light-emitting part 211 interferes with the large-angle light emitted by the second light-emitting part 212, thereby blurring the picture under a large viewing angle and achieving the privacy effect of the display panel 100 under a large viewing angle.

[0084] In the common mode, the third light-emitting control module 71 is turned off so that the first light-emitting part 211 does not emit light; the fourth light-emitting control module 72 is turned on so that the second light-emitting part 212 emits light.

[0085] For example, the second pixel driving circuit 602 further includes a gate reset module 63, an anode reset module 64, a data writing module 65, a threshold compensation module 66, a first light emission control module 61, and a storage capacitor Cst. The specific structures and connections of the gate reset module 63, anode reset module 64, data writing module 65, threshold compensation module 66, first light emission control module 61, and storage capacitor Cst can be the same as the corresponding structures in the first pixel driving circuit 601 shown in FIG. 7a, and will not be described again here in this embodiment of the invention.

[0086] As shown in Figure 8a, the third light-emitting control module 71 includes a third light-emitting control transistor M71. The third light-emitting control transistor M71 is used to transmit the driving current converted by the driving transistor M0 to the first light-emitting part 211 in response to the enable level provided by the first light-emitting control signal line E1, so as to drive the first light-emitting part 211 to emit light.

[0087] The fourth light-emitting control module 72 includes a fourth light-emitting control transistor M72. The fourth light-emitting control transistor M72 is used to transmit the drive current converted by the drive transistor M0 to the second light-emitting part 212 in response to the enable level provided by the second light-emitting control signal line E2, so as to drive the second light-emitting part 212 to emit light.

[0088] Specifically, in the privacy mode, as shown in Figure 8b, which is a timing diagram of a second pixel driving circuit provided in an embodiment of the present invention, the second pixel driving circuit 602, in response to the enable level provided by the first light emission control signal line E1, transmits the driving current converted by the driving transistor M0 to the first light emission part 211, driving the first light emission part 211 to emit light; and, in response to the enable level provided by the second light emission control signal line E2, transmits the driving current converted by the driving transistor M0 to the second light emission part 212, so as to drive the second light emission part 212 to emit light simultaneously.

[0089] In the common mode, as shown in FIG8b, the second pixel driving circuit 602 responds to the non-enable level provided by the first light emission control signal line E1 to control the transmission path between the second pixel driving circuit 602 and the first light emission part 211 to be turned off, so that the first light emission part 211 does not emit light; and responds to the enable level provided by the second light emission control signal line E2 to transmit the driving current converted by the driving transistor M0 to the second light emission part 212 to drive the second light emission part 212 to emit light.

[0090] Based on the above structure, in privacy mode, the first light-emitting part 211 and the second light-emitting part 212 can share the same driving current provided by the second pixel driving circuit 602 to emit light. There is no need to set up an additional circuit structure for providing driving current to the first light-emitting part 211, which simplifies the circuit design of the display panel 100 and the space occupied by the pixel driving circuit in the display panel 100, and is conducive to improving pixel density.

[0091] For example, in privacy mode, the brightness of the first light-emitting part 211 can be greater than or equal to the brightness of the second light-emitting part 212, so as to increase the brightness of the wide-angle light emitted by the first light-emitting part 211, enhance the interference effect of the emitted light of the first light-emitting part 211, and improve the wide-view privacy effect of the display panel 100.

[0092] Optionally, the light emission color of the first light-emitting part 211 and the light emission color of the second light-emitting part 212 can be the same or different, in order to enhance the interference effect of the emitted light of the first light-emitting part 211 on the emitted light of the second light-emitting part 212 and improve the privacy protection effect of the display panel 100 at a wide viewing angle.

[0093] For example, as shown in Figures 1 and 6, the light-emitting element also includes a second light-emitting element 22; the second light-emitting element 22 only has a second light-emitting portion 212. That is, the second light-emitting element 22 does not have a first light-emitting portion for privacy protection. This configuration can improve the privacy protection effect of the display panel 100 from a wide viewing angle, while avoiding setting too many first light-emitting portions for privacy protection in the display panel 100. It can reduce the area occupied by the first light-emitting portion, which is conducive to setting more second light-emitting portions 212 in the display panel 100 and improving the resolution of the display panel 100.

[0094] For example, the colors of the second light-emitting part 212 in the first light-emitting element 21 and the second light-emitting part 212 in the second light-emitting element 22 may be different.

[0095] As shown in Figures 1 and 6, the display panel 100 includes a first-color light-emitting element 231, a second-color light-emitting element 232, and a third-color light-emitting element 233. The first-color light-emitting element 231 emits light of a first color, the second-color light-emitting element 232 emits light of a second color, and the third-color light-emitting element emits light of a third color. The first, second, and third colors are all different to enable full-color display. Optionally, the first, second, and third colors can be green, blue, and red, respectively.

[0096] Optionally, the first light-emitting element 21 includes a first-color light-emitting element 231, and the second light-emitting element 22 includes a second-color light-emitting element 232 and / or a third-color light-emitting element 233. For example, the first-color light-emitting element 231 includes a green light-emitting element, the second-color light-emitting element 232 includes a blue light-emitting element, and the third-color light-emitting element 233 includes a red light-emitting element. Compared to red and blue light-emitting elements, the green light-emitting element has higher luminous efficiency. Using this arrangement, with fewer first light-emitting elements, the light intensity of the wide-angle light emitted by the first light-emitting elements can be enhanced, which is beneficial for improving the wide-viewing-angle privacy protection effect of the display panel 100.

[0097] It should be noted that the shapes of the various light-emitting elements and the arrangement patterns between different light-emitting elements shown in Figures 1 and 6 are only schematic diagrams. Those skilled in the art can adjust the shapes of the light-emitting elements and the arrangement patterns between different light-emitting elements according to different design requirements. The embodiments of the present invention do not limit this.

[0098] For example, as shown in Figures 1 and 6, the touch layer 4 further includes a fifth opening OP23, which at least partially exposes the second light-emitting portion 212 in the second light-emitting element 22, so that the emitted light from the second light-emitting element 22 passes through the fifth opening OP23 and ensures the emitted light intensity of the second light-emitting element 22. Furthermore, the fifth opening OP23 can further improve the light transmittance of the touch layer 4, thereby further improving the light transmittance of the display panel 100.

[0099] Optionally, as shown in Figures 1 and 6, the fifth opening OP23 includes a first sub-opening OP231 and a second sub-opening OP232. Along a direction perpendicular to the plane of the substrate 1, the first sub-opening OP231 at least partially overlaps with the second-color light-emitting element 232, and the second sub-opening OP232 at least partially overlaps with the third-color light-emitting element 233. The emitted light from the second-color light-emitting element 232 can exit through the first sub-opening OP231, and the emitted light from the third-color light-emitting element 233 can exit through the second sub-opening OP232.

[0100] For example, as shown in Figures 1 and 5, the touch layer 4 further includes at least one sixth opening OP24. Along a direction perpendicular to the plane of the substrate 1, the sixth opening OP24 does not overlap with either the first light-emitting element (not shown in Figure 5) or the second light-emitting element (not shown in Figure 5). The provision of the sixth opening OP24 can further increase the light transmittance of the touch layer 4, thereby facilitating an increase in the light transmittance of the display panel 100.

[0101] When setting the first sub-touch unit 41 and the first opening OP11, as exemplarily shown in Figures 1 and 2, the embodiment of the present invention can make the area of ​​the orthographic projection of the first sub-touch unit 41 on the plane of the substrate 1 less than or equal to the area of ​​the orthographic projection of the first opening OP11 on the plane of the substrate 1. For example, the orthographic projection of the first opening OP11 on the plane of the substrate 1 can cover the orthographic projection of the first sub-touch unit 41 on the plane of the substrate 1, so as to avoid the large-angle light emitted by the first light-emitting unit 211 being blocked too much by the first sub-touch unit 41, thereby increasing the intensity of the large-angle light emitted by the first light-emitting unit 211 and improving the large-viewing-angle privacy protection effect of the display panel 100.

[0102] For example, as shown in FIG2, the orthographic projection of the first sub-touch portion 41 onto the plane of the substrate 1 is located within the first opening OP11. Along a direction parallel to the plane of the substrate 1, the distance between the edge of the first sub-touch portion 41 and the edge of the nearest first opening OP11 is X1, and the width of the first opening OP11 is W1. For example, as shown in FIG2, the width of the side of the first opening OP11 away from the substrate 1 can be greater than the width of the side closer to the substrate 1; that is, the side of the first opening OP11 can be configured as an inclined structure with an acute angle to the plane of the substrate 1. The width W1 of the first opening OP11 can be the width of the side of the first opening OP11 away from the substrate 1.

[0103] Along a direction perpendicular to the plane of substrate 1, the distance between the first sub-touch portion 41 and the first light-emitting portion 211 is H1. For example, the distance H1 between the first sub-touch portion 41 and the first light-emitting portion 211 can be the distance between the surface of the first sub-touch portion 41 near substrate 1 and the first light-emitting portion 211; that is, the distance H1 between the first sub-touch portion 41 and the first light-emitting portion 211 can be the film thickness of the film layer between the first sub-touch portion 41 and the first light-emitting portion 211. As shown in FIG2, at least an encapsulation layer 5 and a third electrode 203 may be included between the first sub-touch portion 41 and the first light-emitting portion 211. Wherein, 0≤X1≤W1-H*k1, and k1 is a constant.

[0104] In this embodiment of the invention, k1 can be adjusted according to different requirements for the privacy viewing angle. The privacy viewing angle refers to the angle at which the displayed image cannot be clearly seen. For example, a privacy viewing angle of 45° means that a user viewing the display panel 100 at an angle of 45° or greater cannot clearly see the displayed image.

[0105] For example, when the privacy viewing angle is set to 45°, the embodiment of the present invention can let k1 = tan45°. Based on the above setting method provided by the embodiment of the present invention, it can be obtained that 0 < X1 ≤ W1 - H1 * tan45°, that is, (W1 - X1) / H1 ≥ tan45°. Referring to Figure 9, which is a schematic diagram of the positional relationship between the first sub-touch unit and the first opening provided in an embodiment of the present invention, (W1-X1) / H1=tanθc1, where θc1 is the angle between the propagation direction of the first critical ray emitted by the first light-emitting unit 211 and the normal of the substrate 1. The first critical ray is the ray emitted by the first light-emitting unit 211 that just manages to bypass the first sub-touch unit 41. In other words, based on the setting method provided in the embodiment of the present invention, θc1≥45° can be made so that only the large-angle ray L12 emitted by the first light-emitting unit 211 with an emission angle greater than or equal to 45° can bypass the first sub-touch unit 41 and be emitted from the display panel 100. This large-angle ray can interfere with the ray emitted by the second light-emitting unit 212, thereby achieving a large-viewing-angle privacy protection for the display panel 100. Furthermore, the small-angle light L11 emitted by the first light-emitting part 211 with an emission angle of less than 45° is blocked by the first sub-touch part 41 to prevent this small-angle light L11 from being emitted from the display panel 100. This prevents the small-angle light emitted by the first light-emitting part 211 from entering the eyes of the user viewing the display panel 100 at a viewing angle of less than 45°. As a result, the user viewing the display panel at a viewing angle of less than 45° only sees the light emitted by the second light-emitting part 212. This helps to ensure the display effect of the display panel 100 at a viewing angle of less than 45°, such as at a normal viewing angle.

[0106] Similarly, when a privacy viewing angle of 30° is required, this embodiment of the invention can set k1 = tan30°. Based on the above setting method provided by this embodiment of the invention, it can be obtained that 0 < X1 ≤ W1 - H1 * tan30°, that is, (W1 - X1) / H1 ≥ tan30°, which means that θc1 ≥ 30° can be set. That is, only the large-angle light L12 emitted by the first light-emitting part 211 with an emission angle greater than or equal to 30° can bypass the first sub-touch part 41 and be emitted from the display panel 100, and the small-angle light L11 emitted by the first light-emitting part 211 with an emission angle less than 30° can be emitted towards the first sub-touch part 41 and blocked by the first sub-touch part 41, so as to prevent this part of the small-angle light L11 from being emitted from the display panel 100.

[0107] Optionally, as shown in FIG10, FIG10 is a schematic diagram of the positional relationship between the first sub-touch portion and the first opening provided in an embodiment of the present invention. In an embodiment of the present invention, the area of ​​the first sub-touch portion 41 may be greater than or equal to the area of ​​the first opening OP11. For example, the orthographic projection of the first sub-touch portion 41 on the plane of the substrate 1 may cover the first opening OP11.

[0108] In this configuration, when setting the first sub-touch unit 41 and the first opening OP11, as exemplarily shown in FIG10, the distance between the edge of the first sub-touch unit 41 and the edge of the nearest first opening OP11 along the direction parallel to the plane of the substrate 1 is X2; the distance between the first sub-touch unit 41 and the first light-emitting unit 211 along the direction perpendicular to the plane of the substrate 1 is H1; and the width of the first opening OP11 is W1, where X2 ≥ H1 * k1 - W1, and X2 ≥ 0, and k1 is a constant. k1 can be adjusted accordingly based on different requirements for the privacy viewing angle.

[0109] For example, when the privacy viewing angle is set to 45°, in this embodiment of the invention, k1 can be set to tan45°. Based on the above setting method provided by this embodiment of the invention, X2 ≥ H1 * tan45° - W1 can be obtained, that is, (W1 + X2) / H1 ≥ tan45°, where (W1 + X2) / H1 = tanθc1, and θc1 is the angle between the propagation direction of the first critical light emitted by the first light-emitting part 211 and the normal of the substrate 1. In other words, based on the setting method provided by this embodiment of the invention, θc1 ≥ 45° can be set, that is, only the large-angle light L12 emitted by the first light-emitting part 211 with an emission angle greater than or equal to 45° can bypass the first sub-touch part 41 and be emitted from the display panel 100, thereby achieving a large-view privacy viewing angle for the display panel 100. Furthermore, the small-angle light L11 emitted by the first light-emitting part 211 with an emission angle of less than 45° is directed towards the first sub-touch part 41 and blocked by the first sub-touch part 41, so as to prevent this small-angle light from being emitted from the display panel 100. This prevents the small-angle light L11 emitted by the first light-emitting part 211 from entering the eyes of the user viewing the display panel 100 at a viewing angle of less than 45°, so that the user viewing the display panel at a viewing angle of less than 45° can only see the light emitted by the second light-emitting part 212. This helps to ensure the display effect of the display panel 100 at a small viewing angle of less than 45°, such as at a normal viewing angle.

[0110] Similarly, when a privacy viewing angle of 30° is required, this embodiment of the invention can set k1 = tan30°. Based on the above setting method provided by this embodiment of the invention, X2 ≥ H1 * tan30° - W1 can be obtained, that is, (W1 + X2) / H1 ≥ tan30°, which means that θc1 ≥ 30° can be set. That is, only the large-angle light L12 emitted by the first light-emitting part 211 with an emission angle greater than or equal to 30° can bypass the first sub-touch part 41 and be emitted from the display panel 100, thereby achieving a large-view privacy viewing angle for the display panel 100. Furthermore, the small-angle light L11 emitted by the first light-emitting part 211 with an emission angle of less than 30° is blocked by the first sub-touch part 41 to prevent this small-angle light L11 from being emitted from the display panel 100. This prevents the small-angle light L11 emitted by the first light-emitting part 211 from entering the eyes of the user viewing the display panel 100 at a viewing angle of less than 30°. As a result, the user viewing the display panel at a viewing angle of less than 30° only sees the light emitted by the second light-emitting part 212, which helps to ensure the display effect of the display panel 100 at a viewing angle of less than 30°, such as at a normal viewing angle.

[0111] For example, in this embodiment of the invention, H1*k1 can be less than or equal to W1, that is, H1*k1-W1 can be a negative value. In the case of a negative value, this embodiment of the invention can set X2 to be greater than or equal to 0. For example, this embodiment of the invention can set X2=0, that is, set the edge of the first sub-touch portion 41 and the edge of the first opening OP11 to be flush with the normal direction of the substrate 1. It should be noted that the edge of the first sub-touch portion 41 and the edge of the first opening OP11 can be misaligned within the allowable range of process error. This situation can also be regarded as the edge of the first sub-touch portion 41 and the edge of the first opening OP11 being flush with the normal direction of the substrate 1.

[0112] When setting the third opening OP22 and the second opening OP12, as exemplarily shown in FIG2, the embodiment of the present invention can make the area of ​​the third opening OP22 larger than the area of ​​the second opening OP12, and make the orthographic projection of the second opening OP12 on the plane where the substrate 1 is located within the third opening OP22. That is, the orthographic projection of the third opening OP22 on the plane where the substrate 1 is located covers the orthographic projection of the second opening OP12 on the plane where the substrate 1 is located, so that more small-angle light emitted by the second light-emitting part 212 is emitted through the third opening OP22, thereby improving the orthographic viewing angle display effect of the display panel 100.

[0113] Referring to Figure 11, which is a schematic diagram of the positional relationship between the third opening and the second opening according to an embodiment of the present invention, along a direction parallel to the plane of the substrate 1, the distance between the edge of the third opening OP22 and the edge of the nearest second opening OP12 is Y1, and the width of the second opening OP12 is W2. For example, as shown in Figure 2, the width of the side of the second opening OP12 away from the substrate 1 can be greater than the width of the side closer to the substrate 1; that is, the side of the second opening OP12 can be configured as an inclined structure with an acute angle to the plane of the substrate 1. The width W2 of the second opening OP12 can be the width of the side of the second opening OP12 away from the substrate 1.

[0114] Along a direction perpendicular to the plane of substrate 1, the distance between the surface of touch layer 4 away from substrate 1 and the second light-emitting part 212 is H2, where 0≤Y1≤H2*k2-W2, and k2 is a constant. In this embodiment of the invention, k2 can also be adjusted according to different requirements for privacy viewing angles.

[0115] For example, when the privacy viewing angle is set to 45°, in this embodiment of the invention, k2 can be set to tan45°. Based on the above setting method provided by this embodiment of the invention, 0 ≤ Y1 ≤ H2 * tan45° - W2 can be obtained, that is, (Y1 + W2) / H2 ≤ tan45°, where (Y1 + W2) / H2 = tanθc2, θc2 is the angle between the propagation direction of the second critical ray emitted by the second light-emitting part 212 and the normal of the substrate 1, and the second critical ray is the ray emitted by the second light-emitting part 212 that can just pass through the third opening OP22. In other words, based on the setting method provided by this embodiment of the invention, θc2 ≤ 45° can be set so that only the small-angle light L21 emitted by the second light-emitting part 212 with an emission angle of less than or equal to 45° can exit the display panel 100 through the third opening OP22 and enter the eyes of the user viewing the display panel 100 at an angle of less than or equal to 45°. This would cause the large-angle light L22 emitted by the second light-emitting part 212 with an emission angle greater than 45° to be blocked by the second sub-touch part 42 surrounding the third opening OP22, thereby reducing the amount of large-angle light emitted by the second light-emitting part 212.

[0116] Similarly, when the privacy viewing angle is set to 30°, this embodiment of the invention can set k2 = tan30°. Based on the above setting method provided by this embodiment of the invention, 0 ≤ Y1 ≤ H2 * tan30° - W2 can be obtained, that is, (Y1 + W2) / H2 ≤ tan30°. In other words, θc2 ≥ 30° can be set, that is, only the small-angle light L21 emitted by the second light-emitting part 212 with an emission angle less than or equal to 30° can be emitted from the display panel 100 through the third opening OP22 and enter the eyes of the user viewing the display panel 100 at an angle less than or equal to 30°. This reduces the amount of large-angle light L22 emitted by the second light-emitting part 212 that has an emission angle greater than 30° by the second sub-touch part 42 surrounding the third opening OP22.

[0117] Optionally, as shown in Figure 12, which is a schematic diagram of the positional relationship between the third opening and the second opening provided in an embodiment of the present invention, the area of ​​the third opening OP22 can also be made smaller than the area of ​​the second opening OP12, so that the orthographic projection of the third opening OP22 on the plane where the substrate 1 is located is located within the second opening OP12, that is, the orthographic projection of the second opening OP12 on the plane where the substrate 1 is located covers the orthographic projection of the third opening OP22 on the plane where the substrate 1 is located.

[0118] Based on this configuration, when setting the third opening OP22 and the second opening OP12, as exemplarily shown in Figure 12, the distance between the edge of the third opening OP22 and the edge of the nearest second opening OP12 along the direction parallel to the plane of the substrate 1 is Y2; the distance between the surface of the touch layer 4 away from the substrate 1 and the second light-emitting part 212 along the direction perpendicular to the plane of the substrate 1 is H2; and the width of the second opening OP12 is W2, where Y2≥0 and Y2≥W2-H2*k2, where k2 is a constant. k2 can be adjusted according to different requirements for the privacy viewing angle.

[0119] For example, when the privacy viewing angle is set to 45°, in this embodiment of the invention, k2 can be set to tan45°. Based on the above setting method provided by this embodiment of the invention, Y2 ≥ W2 - H2 * tan45° can be obtained, that is, (W2 - Y2) / H2 ≤ tan45°, where (W2 - Y2) / H2 = tanθc2, θc2 is the angle between the propagation direction of the second critical ray emitted by the second light-emitting part 212 and the normal of the substrate 1, and the second critical ray is the ray emitted by the second light-emitting part 212 that can just pass through the third opening OP22. In other words, based on the setting method provided by this embodiment of the invention, By setting θc2≤45°, that is, only the small-angle light L21 emitted by the second light-emitting part 212 with an emission angle of less than or equal to 45° can be emitted from the display panel 100 through the third opening OP22 and enter the eyes of the user viewing the display panel 100 at an angle of less than or equal to 45°, so that the large-angle light L22 emitted by the second light-emitting part 212 with an emission angle greater than 45° is blocked by the second sub-touch part 42 surrounding the third opening OP22, thereby reducing the amount of large-angle light emitted by the second light-emitting part 212.

[0120] Similarly, when the privacy viewing angle is set to 30°, this embodiment of the invention can set k2 = tan30°. Based on the above setting method provided by this embodiment of the invention, Y2 ≥ W2 - H2 * tan30° can be obtained, that is, (W2 - Y2) / H2 ≤ tan30°. In other words, θc2 ≤ 30° can be set, that is, only the small-angle light L21 emitted by the second light-emitting part 212 with an emission angle less than or equal to 30° can be emitted from the display panel 100 through the third opening OP22 and enter the eyes of the user viewing the display panel 100 at an angle less than or equal to 30°. This reduces the amount of large-angle light L22 emitted by the second light-emitting part 212 that has an emission angle greater than 30° by the second sub-touch part 42 surrounding the third opening OP22.

[0121] For example, in this embodiment of the invention, W2 can be less than H2*K2, that is, W2-H2*k2 can be a negative value. In the case of a negative value, this embodiment of the invention can set Y2≥0. For example, this embodiment of the invention can set Y2=0, that is, set the edge of the third opening OP22 and the edge of the second opening OP12 to be flush with the normal direction of the substrate 1. It should be noted that the edges of the third opening OP22 and the second opening OP12 can be misaligned within the allowable range of process error. This situation can also be regarded as the edges of the third opening OP22 and the second opening OP12 being flush with the normal direction of the substrate 1.

[0122] For example, as shown in FIG13, FIG13 is a cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention. The display panel 100 further includes a first dimming part 81 and a second dimming part 82 stacked together. The first dimming part 81 is located on the side of the second dimming part 82 close to the substrate 1. The refractive index of the first dimming part 81 is greater than the refractive index of the second dimming part 82.

[0123] The first dimming unit 81 receives light emitted from the first light-emitting unit 211 and adjusts the propagation direction of the light so that the exit angle of the emitted light from the interface between the first dimming unit 81 and the second dimming unit 82 is greater than the incident angle of the incident light entering the interface. The exit angle refers to the angle between the propagation direction of the emitted light and the normal to the substrate 1, and the incident angle refers to the angle between the propagation direction of the incident light and the normal to the substrate 1. This arrangement enhances the light intensity of wide-angle light emitted from the display panel 100, thus improving the privacy protection effect of the display panel 100 over a wide viewing angle.

[0124] For example, as shown in FIG13, a portion of the small-angle light L121 emitted by the first light-emitting unit 211 can be directed toward the first dimming unit 81 and exit from the interface between the first dimming unit 81 and the second dimming unit 82 at a larger exit angle. Another portion of the small-angle light L122 emitted by the first light-emitting unit 211 is directed toward the first sub-touch unit 41. This portion of light is reflected by the first sub-touch unit 41 and then directed toward the first dimming unit 81, exiting from the interface between the first dimming unit 81 and the second dimming unit 82 at a larger exit angle.

[0125] For example, in embodiments of the present invention, the orthographic projection of the first dimming unit 81 onto the plane of the substrate 1 can at least partially surround the first sub-touch unit 41. Optionally, as shown in FIG14, FIG14 is a top view schematic diagram of a first dimming unit, a first sub-touch unit, and a first light-emitting unit provided in an embodiment of the present invention, wherein the first dimming unit 81 is a ring structure surrounding the first sub-touch unit 41. The arrangement of the first dimming unit 81 can deflect the large-angle light reflected by the first sub-touch unit 41 from multiple directions, increase the large-angle light intensity in multiple directions, thereby improving the large-viewing-angle privacy protection effect of the display panel 100 in multiple directions.

[0126] Optionally, as shown in Figures 13 and 14, in a direction parallel to the plane of the substrate 1, the embodiments of the present invention may allow a distance between the first sub-touch unit 41 and the first dimming unit 81.

[0127] Alternatively, as shown in Figures 15 and 16, Figure 15 is a cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention, and Figure 16 is a top view schematic diagram of another first dimming unit, first sub-touch unit, and first light-emitting unit provided in an embodiment of the present invention, wherein at least a portion of the first dimming unit 81 is located on the side of the touch layer 4 away from the substrate 1. That is, along the direction perpendicular to the plane where the substrate 1 is located, the first sub-touch unit 41 and the first dimming unit 81 at least partially overlap.

[0128] For example, when manufacturing the display panel 100, the touch layer 4 can be fabricated first. For example, the fabrication of the touch layer 4 includes a film formation process and a patterning process to form the first sub-touch portion 41 and the third opening OP22.

[0129] After the touch layer 4 is fabricated, a first dimming part 81 is fabricated on the side of the touch layer 4 away from the substrate 1. For example, as shown in FIG15, the first dimming part 81 and the first sub-touch part 41 may partially overlap along a direction perpendicular to the plane of the substrate 1.

[0130] Then, a second dimming section 82 is formed covering the first dimming section 81. As exemplarily shown in Figures 13 and 15, the second dimming section 82 includes a planarization layer. That is, the surface of the second dimming section 82 away from the substrate 1 is a generally flat plane.

[0131] For example, as shown in Figures 13, 14, 15 and 16, the orthographic projection of the first dimming unit 81 onto the plane of the substrate 1 at least partially overlaps with the first opening OP11, so as to receive as much small-angle light emitted by the first dimming unit 81 as possible, and adjust more small-angle light into large-angle light to be emitted, thereby increasing the light intensity of the large-angle light emitted from the display panel 100 and improving the privacy protection effect of the display panel from a wide viewing angle.

[0132] Optionally, as shown in FIG13, the display panel 100 further includes a third dimming unit 83 and a fourth dimming unit 84 stacked together, wherein the third dimming unit 83 is located on the side of the fourth dimming unit 84 closer to the substrate 1; the refractive index of the third dimming unit 83 is less than the refractive index of the fourth dimming unit 84.

[0133] As shown in Figure 13, the orthographic projection of the third dimming unit 83 onto the plane of the substrate 1 is at least partially located within the aforementioned third opening OP22. The third dimming unit 83 receives the large-angle light L22 emitted by the second light-emitting unit 212 and adjusts the propagation direction of this portion of light so that the exit angle of the light emitted from the interface between the third dimming unit 83 and the fourth dimming unit 84 is smaller than the incident angle of the incident light. This arrangement enhances the light intensity of the small-angle light emitted from the display panel 100, thereby improving the display effect of the display panel at small viewing angles, such as a normal viewing angle.

[0134] For example, as shown in FIG13, the orthographic projection of the third dimming part 83 on the plane of the substrate 1 does not overlap with the second opening OP12 at least partially, so as to avoid too much small-angle light emitted by the second light-emitting part 212 hitting the third dimming part 83, so that more small-angle light can avoid the third dimming part 83 and be emitted, thereby reducing light loss and increasing the brightness at the orthographic viewing angle.

[0135] Optionally, in embodiments of the present invention, the orthographic projection of the third dimming unit 83 onto the plane of the substrate 1 may at least partially surround the second opening OP12. Optionally, as shown in FIG17, FIG17 is a top view schematic diagram of a third dimming unit, a second sub-touch unit, and a second light-emitting unit provided in an embodiment of the present invention. In FIG17, the third dimming unit 83 is a ring structure surrounding the second opening OP12. The third dimming unit 83 can deflect the large-angle light emitted from the second light-emitting unit 212 from multiple directions, adjust more large-angle light to small-angle light emitted from the display panel, improve the utilization rate of the large-angle light emitted by the second light-emitting unit 212, and improve the brightness of the display panel 100 at a normal viewing angle.

[0136] Optionally, as shown in Figures 13 and 17, in a direction parallel to the plane of the substrate 1, the embodiments of the present invention may allow a distance to exist between the second sub-touch portion 42 and the third dimming portion 83. That is, a distance is allowed to exist between the edge of the third dimming portion 83 and the edge of the third opening OP22.

[0137] Alternatively, as shown in Figures 18 and 19, Figure 18 is a cross-sectional schematic diagram of another display panel provided by an embodiment of the present invention, and Figure 19 is a top view schematic diagram of another third dimming part, second sub-touch part and second light-emitting part provided by an embodiment of the present invention. In this embodiment of the present invention, the third dimming part 83 and the second sub-touch part 42 can partially overlap, and at least a portion of the third dimming part 83 is located on the side of the second sub-touch part 42 away from the substrate 1.

[0138] Optionally, as shown in FIG18, at least a portion of the third dimming section 83 is located on the side of the touch layer 4 away from the substrate 1. Exemplarily, during the fabrication of the display panel 100, the third dimming section 83 can be fabricated on the side of the touch layer 4 away from the substrate 1 after the touch layer 4 is fabricated. Exemplarily, as shown in FIG18, the third dimming section 83 and the second sub-touch section 42 can partially overlap in a direction perpendicular to the plane of the substrate 1. Subsequently, a fourth dimming section 84 covering the third dimming section 83 is formed.

[0139] For example, the second dimming unit 82 and the fourth dimming unit 84 are made of the same material and are formed using the same process to simplify the manufacturing process of the display panel, reduce the number of steps, and lower costs. Optionally, there may be no interface between the second dimming unit 82 and the fourth dimming unit 84.

[0140] In another possible implementation, as shown in FIG20, which is a top view of another display panel provided by an embodiment of the present invention, the touch layer 4 includes a second sub-touch portion 42, which at least partially surrounds the third opening OP22; along the first direction h1 and / or the second direction h2, the second sub-touch portion 42 and the second light-emitting portion 212 located on one side of the second light-emitting portion 212 at least partially overlap in a direction perpendicular to the plane of the substrate 1; wherein the first direction h1 and the second direction h2 are opposite. Based on this arrangement, for the large-angle light emitted by the second light-emitting portion 212, this part of the light can be more blocked by the second sub-touch portion 42 during the process of exiting the display panel 100. Therefore, for the optical components located on the side of the display panel 100 in the first direction h1, or for the optical components located on the side of the display panel 100 in the second direction h2, the light intensity of the large-angle light emitted by the second light-emitting portion 212 received by these optical components can be reduced. Figure 20 illustrates that the second sub-touch portion 42 and the second light-emitting portion 212 located on one side of the second light-emitting portion 212 overlap at least partially in a direction perpendicular to the plane of the substrate 1 along the first direction h1, and the second sub-touch portion 42 and the second light-emitting portion 212 located on one side of the second light-emitting portion 212 overlap at least partially in a direction perpendicular to the plane of the substrate 1 along the second direction h2.

[0141] For example, the display panel can be used as an in-vehicle display screen. In this case, the windshield of the vehicle can be regarded as the aforementioned optical component in the embodiment of the present invention. As shown in FIG21, FIG21 is a schematic diagram of the positional relationship between a display panel and a windshield provided in an embodiment of the present invention, wherein the windshield 6 is located on one side of the display panel 100 along the first direction h1. In this way, the large-angle light emitted by the second light-emitting part 212 can be blocked by the second sub-touch part (not shown in FIG21) during its process of hitting the windshield 6, thereby preventing this part of the light from hitting the windshield 6, and further preventing this part of the light from being reflected by the windshield 6 into the eyes of the driver. That is, it prevents the image in the display panel 100 from being projected into the windshield 6 and obstructing the driver's observation of the external environment of the vehicle through the windshield 6, which is beneficial to improving driving safety.

[0142] For example, as shown in FIG20, along the third direction h3 and / or the fourth direction h4, the second sub-touch unit 42 and the second light-emitting unit 212 located on one side of the second light-emitting unit 212 do not overlap in the direction perpendicular to the plane of the substrate 1; wherein, the third direction h3 and the fourth direction h4 are opposite, the first direction h1 and the third direction h3 intersect, and both are parallel to the plane of the substrate 1. Based on this arrangement, the obstruction of the emitted light from the second light-emitting unit 212 by the second sub-touch unit 42 can be reduced. Moreover, when this display panel is used as an in-vehicle display, the third direction h3 can be parallel to the seating arrangement direction of the driver and the passenger. For example, the first direction h1, the second direction h2, the third direction h3 and the fourth direction h4 can be the upper side direction, the lower side direction, the left side direction and the right side direction of the in-vehicle display, respectively. Based on this configuration, the light emitted by the display panel 100 can bypass the second sub-touch unit 42 and be directed towards the driver on one side of the display panel 100 in the third direction h3, and towards the passenger on the other side of the display panel 100 in the third direction h3, so that the display screen can be viewed by both the driver and the passenger at the same time. That is, the display screen can be shared by both the driver and the passenger, which can improve the driving and riding experience.

[0143] It can be seen that by adopting this setting, the second sub-touch unit 42 can limit the viewing angle of the display panel 100 in the first direction h1 or the second direction h2, and increase the viewing angle of the display panel 100 in the third direction h3 or the fourth direction h4.

[0144] Optionally, as shown in FIG20, in this embodiment of the invention, the first light-emitting part 211 and the second light-emitting part 212 can be arranged along the third direction h3 to avoid the first sub-touch part 41 provided corresponding to the first light-emitting part 211 blocking the large-angle light emitted by the second light-emitting part 212 that propagates toward the third direction h3.

[0145] Based on the same inventive concept, this embodiment of the invention also provides a display device, as shown in FIG22. FIG22 is a schematic diagram of a structure of the display device provided in this embodiment of the invention, which includes the aforementioned display panel 100. The specific structure of the display panel 100 has been described in detail in the above embodiments and will not be repeated here. Of course, the display device shown in FIG22 is merely illustrative; the display device can be any electronic device with display function, such as a mobile phone, tablet computer, laptop computer, e-reader, in-vehicle display screen, or television.

[0146] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0147] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized by, The display panel comprises: a substrate comprising a display area; the display area comprises a plurality of light-emitting elements located on one side of the substrate, the light-emitting elements comprising a first light-emitting element, the first light-emitting element comprising a first light-emitting part and a second light-emitting part; a pixel definition layer located on one side of the substrate, the pixel definition layer comprising a first opening and a second opening, at least part of the first light-emitting part being located in the first opening, and at least part of the second light-emitting part being located in the second opening; a touch layer located on a side of the light-emitting element away from the substrate, the touch layer comprising a first sub-touch part and a third opening; in a direction perpendicular to the plane in which the substrate lies, the first sub-touch part and the first opening at least partially overlap, and the third opening and the second opening at least partially overlap.

2. The display panel of claim 1, wherein a projection of the first opening on the plane in which the substrate lies covers a projection of the first sub-touch part on the plane in which the substrate lies.

3. The display panel of claim 2, wherein in a direction parallel to the plane in which the substrate lies, the distance between the edge of the first sub-touch part and the edge of the first opening is X1, in a direction perpendicular to the plane in which the substrate lies, the distance between the surface of the substrate close to the first sub-touch conductive part and the first light-emitting part is H1, and the width of the first opening on a side away from the substrate is W1, wherein X1≤W1-H1*k1, and k1 is a constant.

4. The display panel of claim 1, wherein a projection of the first sub-touch part on the plane in which the substrate lies covers a projection of the first opening on the plane in which the substrate lies.

5. The display panel of claim 4, wherein in a direction parallel to the plane in which the substrate lies, the distance between the edge of the first sub-touch part and the edge of the first opening is X2, in a direction perpendicular to the plane in which the substrate lies, the distance between the surface of the substrate close to the first sub-touch conductive part and the first light-emitting part is H1, and the width of the first opening on a side away from the substrate is W1, wherein X2≥H1*k1-W1, and X2≥0, and k1 is a constant.

6. The display panel of claim 1, wherein a projection of the third opening on the plane in which the substrate lies covers a projection of the second opening on the plane in which the substrate lies.

7. The display panel of claim 6, wherein in a direction parallel to the plane in which the substrate lies, the distance between the edge of the third opening and the edge of the second opening is Y1, in a direction perpendicular to the plane in which the substrate lies, the distance between the surface of the substrate away from the touch layer and the second light-emitting part is H2, and the width of the second opening on a side away from the substrate is W2, wherein 0≤Y1≤H2*k2-W2, and k2 is a constant.

8. The display panel of claim 1, wherein The second opening covers a projection of the third opening on a plane where the substrate is located.

9. The display panel of claim 8, wherein, In a direction parallel to the plane where the substrate is located, a distance between an edge of the third opening and an edge of the second opening is Y1, in a direction perpendicular to the plane where the substrate is located, a distance between a surface of the substrate and the second light emitting part is H2, and a width of the second opening away from the substrate is W2, wherein Y2≥W2-H2*k2, and Y2≥0, where k2 is a constant.

10. The display panel of claim 1, wherein, Further comprising a first light adjusting part and a second light adjusting part stacked, the first light adjusting part is located on a side of the second light adjusting part close to the substrate; A projection of the first light adjusting part on the plane where the substrate is located at least partially surrounds the first sub touch control part; A refractive index of the first light adjusting part is greater than a refractive index of the second light adjusting part.

11. The display panel of claim 10, wherein, The projection of the first light adjusting part on the plane where the substrate is located at least partially overlaps the first opening.

12. The display panel of claim 10, wherein, At least part of the first light adjusting part is located on a side of the touch control layer away from the substrate.

13. The display panel of claim 10, wherein, Further comprising a third light adjusting part and a fourth light adjusting part stacked, the third light adjusting part is located on a side of the fourth light adjusting part close to the substrate; A projection of the third light adjusting part on the plane where the substrate is located at least partially locates within the third opening; A refractive index of the third light adjusting part is less than a refractive index of the fourth light adjusting part.

14. The display panel of claim 13, wherein, The projection of the third light adjusting part on the plane where the substrate is located at least partially does not overlap the second opening.

15. The display panel of claim 13, wherein, At least part of the third light adjusting part is located on a side of the touch control layer away from the substrate.

16. The display panel of claim 13, wherein, The second light adjusting part and the fourth light adjusting part are made of the same material and formed by the same process.

17. The display panel of claim 1, wherein, The touch control layer comprises a second sub touch control part, the second sub touch control part at least partially surrounds the third opening; In a first direction and / or a second direction, the second sub touch control part and the second light emitting part on a side of the second light emitting part at least partially overlap in a direction perpendicular to the plane where the substrate is located; In a third direction and / or a fourth direction, the second sub touch control part and the second light emitting part on a side of the second light emitting part do not overlap in a direction perpendicular to the plane where the substrate is located; ​ The first direction and the second direction are opposite, the third direction and the fourth direction are opposite, the first direction and the third direction intersect, and are all parallel to the plane in which the substrate lies.

18. The display panel of claim 1, wherein, The display mode of the display panel comprises a privacy mode and a public mode; In the privacy mode, the first light emitting part and the second light emitting part both emit light; In the public mode, the first light emitting part does not emit light, and the second light emitting part emits light.

19. The display panel of claim 18, wherein, In the privacy mode, the brightness of the first light emitting part is greater than or equal to the brightness of the second light emitting part.

20. The display panel of claim 1, wherein, The light emitting element further comprises a second light emitting element; and the second light emitting element is only provided in the second light emitting part.

21. The display panel of claim 20, wherein, The first light emitting element comprises a green light emitting element, and the second light emitting element comprises a red light emitting element or a blue light emitting element.

22. A display device comprising: A display panel as claimed in any one of claims 1-21.

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