Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device, a plurality of pixel circuit islands are arranged on one side of a substrate, a light emitting device is arranged on a side of the pixel circuit island away from the substrate, the pixel circuit island includes at least one pixel circuit, and the light emitting device is electrically connected with the pixel circuit; a light blocking structure includes a light reflecting structure and / or a light absorbing structure; wherein the light blocking structure includes a first light blocking structure, and the first light blocking structure is arranged on a side wall of the pixel circuit island. The first light blocking structure can prevent light outside the pixel circuit island from being incident on the inside of the pixel circuit island through the side wall of the pixel circuit island, thereby reducing the incidence of light outside the pixel circuit island on the semiconductor layer of a transistor included in the pixel circuit island, and ensuring the stable performance of the pixel circuit included in the pixel circuit island.

Description

[0001] This application is a divisional application of Chinese Patent No. 202211504902.X, filed on November 28, 2022, entitled "A Display Panel and Display Device". [Technical Field] This application relates to the field of display technology, and in particular to a display panel and display device. [Background Technology] In the field of display technology, the stability of the light-emitting effect of light-emitting devices is an important criterion for evaluating the performance of display panels and display devices. The light emission of these devices depends on the driving force of pixel circuits composed of thin-film transistors and other electronic components.

[0002] The active layer of a thin-film transistor (TFT) typically uses a semiconductor material with photoelectric effect. When the active layer of a TFT is continuously exposed to light, its threshold voltage will drift and its lifetime will decrease. Therefore, it is necessary to consider how to reduce the impact of light on the TFT in the pixel circuit to ensure the light emission stability of the light-emitting device.

[0003] [Application Content] In view of this, embodiments of this application provide a display panel and a display device to solve the above problems.

[0004] In a first aspect, embodiments of this application provide a display panel, including: Substrate; Multiple pixel circuit islands are disposed on one side of the substrate; each pixel circuit island includes at least one pixel circuit. A light-emitting device is disposed on the side of the pixel circuit island away from the substrate; the light-emitting device is electrically connected to the pixel circuit. Light-blocking structures, including reflective structures and / or light-absorbing structures; The light-blocking structure includes a first light-blocking structure, which is disposed on the sidewall of the pixel circuit island.

[0005] Secondly, embodiments of this application provide a display device, including the display device provided in the first aspect.

[0006] The first light-blocking structure can prevent light from the outside of the pixel circuit island from entering the interior of the pixel circuit island through the sidewall of the pixel circuit island, thereby reducing the amount of light from the outside of the pixel circuit island entering the semiconductor layer of the transistors included in the pixel circuit island, and ensuring the stable performance of the pixel circuits included in the pixel circuit island. [Attached Image Description] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0007] Figure 1 A schematic diagram of a display panel provided in an embodiment of this application; Figure 2 for Figure 1 A cross-sectional view along the M1-M2 direction; Figure 3 A schematic diagram of a display panel provided in an embodiment of this application; Figure 4 for Figure 3 A cross-sectional view along the N1-N2 direction; Figure 5 A schematic diagram of a display panel provided in an embodiment of this application; Figure 6 A cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application; Figure 7 A planar schematic diagram of a pixel circuit island and a light-emitting device provided in an embodiment of this application; Figure 8 for Figure 7 A cross-sectional view along the S1-S2 direction; Figure 9 A planar schematic diagram of a pixel circuit island and a light-emitting device provided in an embodiment of this application; Figure 10 for Figure 9 A cross-sectional view along the O1-O2 direction; Figure 11 A cross-sectional schematic diagram of pixel circuit islands and light-emitting devices in a display panel provided for an embodiment of this application; Figure 12 A cross-sectional schematic diagram of pixel circuit islands and light-emitting devices in a display panel provided for an embodiment of this application; Figure 13 A cross-sectional schematic diagram of pixel circuit islands and light-emitting devices in a display panel provided for an embodiment of this application; Figure 14 A cross-sectional schematic diagram of pixel circuit islands and light-emitting devices in a display panel provided for an embodiment of this application; Figure 15 for Figure 14 A planar schematic diagram of the pixel circuit island shown; Figure 16A cross-sectional schematic diagram of pixel circuit islands and light-emitting devices in a display panel provided for an embodiment of this application; Figure 17 for Figure 16 A planar schematic diagram of the pixel circuit island shown; Figure 18 A cross-sectional schematic diagram of pixel circuit islands and light-emitting devices in a display panel provided for an embodiment of this application; Figure 19 for Figure 18 A planar schematic diagram of the pixel circuit island shown; Figure 20 A cross-sectional schematic diagram of pixel circuit islands and light-emitting devices in a display panel provided for an embodiment of this application; Figure 21 for Figure 20 A planar schematic diagram of the pixel circuit island shown; Figure 22 A plan view of another display panel provided in an embodiment of this application; Figure 23 This is a plan view of a display panel provided in an embodiment of this application; Figure 24 This is a plan view of a display panel provided in an embodiment of this application; Figure 25 A schematic diagram of a display panel provided in an embodiment of this application; Figure 26 A cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application; Figure 27 For inclusion Figure 26 A planar schematic diagram of the light-blocking structure in the display panel of the pixel circuit island shown. Figure 28 A cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application; Figure 29 A cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application; Figure 30 for Figure 29 A schematic diagram of the projection of the middle section structure; Figure 31 A cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application; Figure 32 A cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application; Figure 33 This is a schematic diagram of a light-blocking structure in a display panel provided in an embodiment of this application; Figure 34This is a schematic diagram of a light-blocking structure in a display panel provided in an embodiment of this application; Figure 35 A cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application; Figure 36 A cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application; Figure 37 A cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application; Figure 38 A cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application; Figure 39 A cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application; Figure 40 A cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application; Figure 41 A cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application; Figure 42 This is a schematic diagram of a display device provided in an embodiment of this application.

Detailed Implementation Methods

[0008] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0009] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0010] 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, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0011] In the description of this specification, it should be understood that the terms "substantially", "approximately", "about", "about", "roughly", "generally" and "generally" used in the claims and embodiments of this application refer to values ​​that can be generally agreed upon within a reasonable range of process operations or tolerances, rather than a precise value.

[0012] It should be understood that although the terms first, second, third, etc., may be used to describe light-blocking structures in the embodiments of this application, these light-blocking structures should not be limited to these terms. These terms are only used to distinguish light-blocking structures from one another. For example, without departing from the scope of the embodiments of this application, a first light-blocking structure may also be referred to as a second light-blocking structure, and similarly, a second light-blocking structure may also be referred to as a first light-blocking structure.

[0013] Through meticulous and in-depth research, the applicant in this case has provided a solution to the problems existing in the prior art.

[0014] Figure 1 This is a schematic diagram of a display panel provided in an embodiment of this application. Figure 2 for Figure 1 A cross-sectional view along the M1-M2 direction.

[0015] Combination Figure 1 and Figure 2 The display panel 001 provided in this application embodiment includes a substrate 01, a plurality of pixel circuit islands 02, and a plurality of light-emitting devices 03. The pixel circuit islands 02 and the light-emitting devices 03 are disposed on the same side of the substrate 01, and the light-emitting devices 03 are disposed on the side of the pixel circuit islands 02 away from the substrate 01.

[0016] The pixel circuit island 02 includes at least one pixel circuit 20. For example... Figure 2 As shown, the pixel circuit 20 includes a transistor 200, and the transistor 200 typically includes a semiconductor layer 21, a gate 22, a source 23, and a drain 24. Although Figure 2 The diagram only shows one transistor 200 included in the pixel circuit 20, but the actual pixel circuit 20 may include multiple transistors 200.

[0017] It should be noted that, in order to clearly illustrate the inventive points of this application, the accompanying drawings are simple schematic diagrams. For example, Figure 2 The diagram illustrates the electrical connection between the light-emitting device 03 and the source 23 of a transistor 200 in the pixel circuit 20. However, in actual products, the electrical connection between the light-emitting device 03 and the source 23 of a transistor 200 in the pixel circuit 20 can be any other than... Figure 2 Other methods include, for example, the two may include adapter electrodes that are electrically connected to each other.

[0018] It should be noted that the pixel circuits 20 included in different pixel circuit islands 02 can be connected to each other, and the pixel circuits 20 in the pixel circuit island 02 can be connected to signal lines, devices, etc. outside the pixel circuit island 02.

[0019] Furthermore, there is at least a partial break in the insulating layer 05 between adjacent pixel circuit islands 02, that is, the insulating layer 05 between at least a portion of the film layers of the pixel circuit 20 is broken in the region between the pixel circuit islands 02, forming pixel circuit islands 02. Then, the multiple pixel circuit islands 02 are multiple protrusion structures disposed on one side of the substrate 01.

[0020] In one implementation, such as Figure 2 As shown, the insulating layer 05 located between the substrate 01 and the film layers containing the source 23 and drain 24 of the pixel circuit 20 is discontinuous in the region between the pixel circuit island 02. The light-emitting device 03 can be disposed on the pixel circuit island 02 and electrically connected to the pixel circuit 20. The pixel circuit 20 can provide the light-emitting device 03 with the light-emitting driving current or light-emitting driving voltage required for light emission.

[0021] The display panel 001 provided in this embodiment further includes a light-blocking structure 04, which includes a reflective structure and / or a light-absorbing structure. The light-blocking structure 04 can prevent incident light from propagating further forward. For example, the light-blocking structure 04 may include a reflective structure; for example, the light-blocking structure 04 may include a light-absorbing structure; for example, the light-blocking structure 04 may simultaneously include both a reflective structure and a light-absorbing structure.

[0022] Among them, a reflective structure refers to a structure in which light incident on its surface is significantly reflected, while a light-absorbing structure refers to a structure in which most of the light incident on its surface is absorbed and relatively does not reflect light.

[0023] When the light-blocking structure 04 includes both a reflective structure and a light-absorbing structure, a portion of the light-blocking structure 04 is a reflective structure and another portion is a light-absorbing structure. Alternatively, when the light-blocking structure 04 includes both a reflective structure and a light-absorbing structure, at least a portion of the light-blocking structure 04 includes a stacked reflective structure and a light-absorbing structure.

[0024] The light-blocking structure 04 includes a first light-blocking structure 41, which is also disposed on the sidewall of the pixel circuit island 02. The first light-blocking structure 41 prevents light from the outside of the pixel circuit island 02 from passing through the sidewall and entering the interior of the pixel circuit island 02. This reduces the amount of light from the outside of the pixel circuit island 02 incident on the semiconductor layer 21 of the transistors 200 included in the pixel circuit island 02, ensuring the stable performance of the pixel circuits 20 included in the pixel circuit island 02.

[0025] Depend on Figure 2It can be seen that the light incident on the pixel circuit island 02 is mainly the light emitted by the light-emitting device 03 above the adjacent pixel circuit island 02. If this part of the light is to enter the semiconductor layer 21 of the transistor 200 inside the pixel circuit island 02, it will mainly enter the pixel circuit island 02 through the side wall. Therefore, setting the first light-blocking structure 41 on the side wall of the pixel circuit island 02 can effectively prevent the light emitted by the light-emitting device 03 above the adjacent pixel circuit island 02 from affecting the performance of the pixel circuit 20 inside the pixel circuit island 02.

[0026] In the embodiments of this application, the light-emitting device 03 can be a sub-millimeter light-emitting diode (Mini-LED), a micro-light-emitting diode (Micro-LED), or an organic light-emitting diode (OLED). Furthermore, the light-emitting device 03 can also be other types of light-emitting devices, and this application does not specifically limit its use.

[0027] In this embodiment, the angle between the sidewall of the pixel circuit island 02 and the direction of the surface where the substrate 01 is located is greater than or equal to 30° and less than or equal to 45°, i.e. Figure 2 As shown, 45° ≥ β ≥ 30°. Therefore, the angle between the direction of the first light-blocking structure 41 and the direction of the substrate 01 is also greater than or equal to 30° and less than or equal to 45°, thereby blocking as much light as possible that may hit the semiconductor layer 21.

[0028] In one implementation of the embodiments of this application, combined with Figure 1 and Figure 2 A pixel circuit island 02 may include a pixel circuit 20.

[0029] Figure 3 This is a schematic diagram of a display panel provided in an embodiment of this application. Figure 4 for Figure 3 A cross-sectional view along the N1-N2 direction.

[0030] In one implementation of the embodiments of this application, combined with Figure 3 and Figure 4 A pixel circuit island 02 can include multiple pixel circuits 20. For example, combined with Figure 3 and Figure 4 When three sub-pixels can form one pixel, the pixel circuits 20 included by the three sub-pixels can be set in the same pixel circuit island 02.

[0031] It should be noted that, Figure 2 and Figure 3The illustrations show pixel circuit island 02 including a pixel circuit 20 with one sub-pixel and pixel circuit 20 including three sub-pixels, respectively. However, pixel circuit island 02 may also include pixel circuits 20 with other numbers of sub-pixels, and this application does not specifically limit this.

[0032] In the embodiments of this application, combined with Figure 1 and Figure 2 , Figure 3 and Figure 4 The area between adjacent pixel circuit islands 02 includes a first area R1, and the light transmittance of the first area R1 is greater than the light transmittance of the area R2 where the pixel circuit island 02 is located. The multiple pixel circuits 20 in the display panel 001 are divided into multiple pixel circuit islands 02 wrapped by an insulating layer 05. The step difference in the insulating layer 05 between the pixel circuit islands 02 is achieved by thinning or hollowing out the insulating layer 05 between the pixel circuit islands 02, thus increasing the light transmittance of the display panel 001. Therefore, the display panel 001 provided in this embodiment can simultaneously possess high light transmittance.

[0033] Figure 5 This is a schematic diagram of a display panel provided in an embodiment of this application.

[0034] It should be noted that, as Figure 1 As shown, all pixel circuits 20 included in the display panel 001 can be wrapped by the insulating layer 05 to form pixel circuit islands 02. Then the first region R1 is evenly distributed in the entire display area of ​​the display panel 001, and the entire display area of ​​the display panel 001 can have high light transmittance.

[0035] Or, such as Figure 5 As shown, some of the pixel circuits 20 included in the display panel 001 can be wrapped by the insulating layer 05 to form a pixel circuit island 02, while the other part of the pixel circuits 20 is a conventional design, that is, the first region R1 is only distributed in a part of the display area of ​​the display panel 001. Thus, some display areas in the display panel 001 can have high light transmittance. For example, the area in the display panel 001 corresponding to the external light sensor can be provided with a pixel circuit island 02 and the first region R1 is provided in the area in the display panel 001 corresponding to the external light sensor. In addition, such as Figure 1 , Figure 3 and Figure 5 As shown, when pixel circuit islands 02 are included near the edge of the display area AA of the display panel 001, there is also a step difference between the insulating layer between these pixel circuit islands 02 and the non-display area NA of the display panel 001. Therefore, a light-blocking structure 04 can also be provided on the side wall of the circuit island in the non-display area NA of the display panel 001 facing the display area AA.

[0036] For example, multiple cascaded shift register circuits SR are provided in the non-display area NA, and the shift register circuits SR are located in the shift register circuit island. A light-blocking structure 04 can also be provided on the side wall of the shift register circuit island facing the display area AA.

[0037] In one embodiment of this application, such as Figure 2 and Figure 4 As shown, along a direction perpendicular to the plane of the display panel 001, the first light-blocking structure 41 includes a first edge L1 and a second edge L2 disposed opposite to each other, with the first edge L1 away from the substrate 01 and the second edge L2 close to the substrate 01. That is, along the thickness direction of the display panel 001, the first edge L1 of the first light-blocking structure 41 can be the upper edge away from the substrate 01 and the second edge L2 can be the lower edge close to the substrate 01.

[0038] Wherein, the distance d1 between the first edge L1 and the substrate 01 is greater than or equal to the distance d2 between the side of the semiconductor layer 21 closest to the light-emitting device 03 and the substrate 01, that is, the upper edge of the first light-blocking structure 41 is higher than or flush with the upper surface of the semiconductor layer 21. Thus, the semiconductor layer 21 will not protrude beyond the upper edge of the first light-blocking structure 41.

[0039] In this embodiment, in order to make the upper edge of the first light-blocking structure 41 on the sidewall of the pixel circuit island 02 flush with or protrude from the upper surface of the semiconductor layer 21, the insulating layer 05 located above the semiconductor layer 21 in the pixel circuit island 02 may not extend to the adjacent pixel circuit islands 02. That is, the portion of the insulating layer 05 located above the semiconductor layer 21 in the pixel circuit island 02 between adjacent pixel circuit islands 02 is hollowed out.

[0040] Wherein, the distance d3 between the second edge L2 and the substrate 01 is less than or equal to the distance d4 between the side of the semiconductor layer 21 away from the light-emitting device 03 and the substrate 01, that is, the lower edge of the first light-blocking structure 41 is lower than or flush with the lower surface of the semiconductor layer 21. Therefore, the semiconductor layer 21 will not protrude beyond the lower edge of the first light-blocking structure 41.

[0041] In this embodiment, in order to make the lower edge of the first light-blocking structure 41 on the sidewall of the pixel circuit island 02 flush with or protrude from the lower surface of the semiconductor layer 21, the insulating layer 05 located above the substrate 01 in the pixel circuit island 02 may not extend to the adjacent pixel circuit islands 02. That is, the portion of the insulating layer 05 located above the substrate 01 in the pixel circuit island 02 between adjacent pixel circuit islands 02 is hollowed out.

[0042] In one embodiment, the distance d1 between the first edge L1 and the substrate 01 is greater than or equal to the distance d2 between the side of the semiconductor layer 21 closest to the light-emitting device 03 and the substrate 01, and the distance d3 between the second edge L2 and the substrate 01 is less than or equal to the distance d4 between the side of the semiconductor layer 21 furthest from the light-emitting device 03 and the substrate 01. Therefore, along a direction parallel to the plane of the display panel 001, the first light-blocking structure 41 can cover the semiconductor layer 21, meaning the semiconductor layer 21 is disposed within the area surrounded by the first light-blocking structure 41 and does not protrude beyond the upper and lower edges of the first light-blocking structure 41. Thus, the first light-blocking structure 41 can effectively protect the semiconductor layer 21 from light propagating from the sidewall of the pixel circuit island 02.

[0043] Figure 6 This is a cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application.

[0044] In one implementation, such as Figure 6 As shown, the first edge L1 of the first light-blocking structure 41 is basically flush with the upper edge of the sidewall of the pixel circuit island 02, and the second edge L2 of the first light-blocking structure 41 is flush with the lower surface of the sidewall of the pixel circuit island 02.

[0045] Furthermore, when the insulating layer 05 in contact with the substrate 01 is discontinuous between adjacent pixel circuit islands 02, the second edge L2 of the first light-blocking structure 41 can contact the substrate 01.

[0046] Figure 7 This is a planar schematic diagram of a pixel circuit island and a light-emitting device provided in an embodiment of this application. Figure 8 for Figure 7 A cross-sectional view along the S1-S2 direction.

[0047] In one embodiment of this application, combined with Figure 7 and Figure 8 The light-blocking structure 04 also includes a second light-blocking structure 42. Along the direction perpendicular to the plane of the display panel 001, the second light-blocking structure 42 is disposed between the semiconductor layer 21 and the light-emitting device 03, that is, the second light-blocking structure 42 and the first light-blocking structure 41 are light-blocking structures 04 disposed at different positions on the pixel circuit island 02.

[0048] In this embodiment, the orthographic projection of the second light-blocking structure 42 on the substrate 01 at least partially overlaps with the orthographic projection of the semiconductor layer 21 in the pixel circuit island 02 on the substrate 01. Specifically, the orthographic projection of the second light-blocking structure 42 on the substrate 01 at least partially overlaps with the orthographic projection of the channel region of the semiconductor layer 21 in the pixel circuit island 02 on the substrate 01. For example, along a direction perpendicular to the plane of the display panel 001, the second light-blocking structure 42 can completely cover the channel region of the semiconductor layer 21 in the pixel circuit island 02.

[0049] The second light-blocking structure 42 can prevent the light emitted by the light-emitting device 03 above the pixel circuit island 02 from incident downwards into the channel region of the semiconductor layer 21 of the pixel circuit 20, thus avoiding the influence of the light emitted by the light-emitting device 03 above the pixel circuit island 02 on the performance of the pixel circuit 20 in the pixel circuit island 02.

[0050] In one technical solution corresponding to this embodiment, combined with Figure 8 and Figure 9 At least a portion of the second light-blocking structure 42 is electrically connected to the light-emitting device 03 and the pixel circuit 20. That is, the second light-blocking structure 42 can be a conductive structure. At least a portion of the second light-blocking structure 42 is disposed between the light-emitting device 03 and the pixel circuit 20 and can serve as a connecting electrode connecting the light-emitting device 03 and the pixel circuit 20. For example, at least a portion of the second light-blocking structure 42 is electrically connected to the anode 31 of the light-emitting device 03, used to connect the anode 31 of the light-emitting device 03 to the pixel circuit 20. Thus, the second light-blocking structure 42 can both prevent the light emitted by the light-emitting device 03 from affecting the performance of the pixel circuit 20 in the pixel circuit island 02 and ensure the good electrical contact between the light-emitting device 03 and the pixel circuit 20.

[0051] In one implementation, combining Figure 8 and Figure 9 The second light-blocking structure 42 is used entirely for electrically connecting the light-emitting device 03 and the pixel circuit 20. It should be noted that when a pixel circuit island 02 includes multiple pixel circuits 20, the multiple pixel circuits 20 are electrically connected to the corresponding light-emitting device 03 through different second light-blocking structures 42.

[0052] Figure 9 This is a planar schematic diagram of a pixel circuit island and a light-emitting device provided in an embodiment of this application. Figure 10 for Figure 9 A cross-sectional view along the O1-O2 direction.

[0053] In one technical solution corresponding to this embodiment, combined with Figure 9 and Figure 10At least a portion of the second light-blocking structure 42 transmits cathode signals to the light-emitting device 03, meaning the second light-blocking structure 42 is connected to the cathode 32 of the light-emitting device 03. Thus, the second light-blocking structure 42 can both prevent the light emitted by the light-emitting device 03 from affecting the performance of the pixel circuit 20 in the pixel circuit island 02, and can also be reused as a structure providing cathode signals to the light-emitting device 03, resulting in a simple process and cost savings.

[0054] In one implementation, combining Figure 9 and Figure 10 The second light-blocking structure 42 is electrically connected to the cathode 32 of the light-emitting device 03. It should be noted that when a pixel circuit island 02 includes multiple pixel circuits 20, the cathodes 32 of all the light-emitting devices 03 that are electrically connected to the multiple pixel circuits 20 are electrically connected to the same second light-blocking structure 42.

[0055] Figure 11 This is a cross-sectional schematic diagram of pixel circuit islands and light-emitting devices in a display panel provided in an embodiment of this application.

[0056] In one technical solution corresponding to this embodiment, such as Figure 11 As shown, part of the second light-blocking structure 42 is electrically connected to the cathode 32 of the light-emitting device 03 for transmitting cathode signals to the light-emitting device 03; another part of the second light-blocking structure 42 is electrically connected to the anode 31 of the light-emitting device 03 for connecting the light-emitting device 03 and the pixel circuit 20.

[0057] Figure 12 This is a cross-sectional schematic diagram of pixel circuit islands and light-emitting devices in a display panel provided in an embodiment of this application. Figure 13 This is a cross-sectional schematic diagram of pixel circuit islands and light-emitting devices in a display panel provided in an embodiment of this application.

[0058] In one technical solution corresponding to this embodiment, such as Figure 12 and Figure 13 As shown, at least a portion of the second light-blocking structure 42 is reused as at least one of the source 23, drain 24, and gate 22 of the transistor 200.

[0059] For example, such as Figure 12 As shown, part of the second light-blocking structure 42 is reused as the source 23 of the transistor 200 and another part of the second light-blocking structure 42 is reused as the drain 24 of the transistor 200.

[0060] For example, such as Figure 13 As shown, the second light-blocking structure 42 is reused as the gate of transistor 200.

[0061] In one technical solution corresponding to this embodiment, at least a portion of the first light-blocking structure 41 and at least a portion of the second light-blocking structure 42 on the same pixel circuit island 02 are connected. The first light-blocking structure 41 and the second light-blocking structure 42 connected together can effectively prevent the light propagating from above and to the side of the pixel circuit island 02 from affecting the performance of the pixel circuit 20 in the pixel circuit island 02.

[0062] In this technical solution, the arrangement of the first light-blocking structure 41 on the side wall of the pixel circuit island 02 can be determined according to the connection method between the second light-blocking structure 42 and the light-emitting device 03 and the pixel circuit 20.

[0063] Figure 14 This is a cross-sectional schematic diagram of pixel circuit islands and light-emitting devices in a display panel provided in an embodiment of this application. Figure 15 for Figure 14 A planar schematic diagram of the pixel circuit island shown. Figure 16 This is a cross-sectional schematic diagram of pixel circuit islands and light-emitting devices in a display panel provided in an embodiment of this application. Figure 17 for Figure 16 The diagram shows a planar representation of the pixel circuit island.

[0064] In some implementation methods, combined Figure 14 and Figure 15 When the second light-blocking structure 42 disposed on the pixel circuit island 02 is electrically insulated from the light-emitting device 03 and from the pixel circuit 20, the first light-blocking structure 41 disposed on the side wall of the pixel circuit island 02 can be a continuous structure and connected to the second light-blocking structure 42.

[0065] In some implementation methods, combined Figure 16 and Figure 17 When the second light-blocking structure 42 disposed on the pixel circuit island 02 is only connected to the same structure, the first light-blocking structure 41 disposed on the side wall of the pixel circuit island 02 can be a continuous structure and connected to the second light-blocking structure 42. For example, as Figure 16 As shown, when the second light-blocking structure 42 disposed on the pixel circuit island 02 is only connected to the cathode 32, the first light-blocking structure 41 disposed on the side wall of the pixel circuit island 02 can be a continuous structure and connected to the second light-blocking structure 42.

[0066] Figure 18 This is a cross-sectional schematic diagram of pixel circuit islands and light-emitting devices in a display panel provided in an embodiment of this application. Figure 19 for Figure 18 A planar schematic diagram of the pixel circuit island shown. Figure 20 This is a cross-sectional schematic diagram of pixel circuit islands and light-emitting devices in a display panel provided in an embodiment of this application. Figure 21 for Figure 20 The diagram shows a planar representation of the pixel circuit island.

[0067] In some implementation methods, combined Figure 18 and Figure 19 Combination Figure 20 and Figure 21 When a second light-blocking structure 42 electrically connected to different structures is provided on the same pixel circuit island 02, these second light-blocking structures 42 electrically connected to different structures can be connected to different first light-blocking structures 41, that is, the multiple first light-blocking structures 41 on the pixel circuit island 02 are discontinuous structures.

[0068] For example, combining Figure 18 and Figure 19 When one second light-blocking structure 42 on the pixel circuit island 02 is multiplexed as the source 23 of the transistor 200 and the other second light-blocking structure 42 is multiplexed as the drain 24 of the transistor 200, the first light-blocking structure 41 connected to the second light-blocking structure 42 multiplexed as the source 23 of the transistor 200 and the first light-blocking structure 41 connected to the second light-blocking structure 42 multiplexed as the drain 24 of the transistor 200 are each independently set.

[0069] For example, combining Figure 20 and Figure 21 When one second light-blocking structure 42 on the pixel circuit island 02 is electrically connected to the cathode 32 of the light-emitting device 03 and the other second light-blocking structure 42 is electrically connected to the anode 31 of the light-emitting device 03, the first light-blocking structure 41 connected to the second light-blocking structure 42 electrically connected to the cathode 32 of the light-emitting device 03 and the second light-blocking structure 42 electrically connected to the anode 31 of the light-emitting device 03 are each independently set.

[0070] Figure 22 This is a plan view of another display panel provided in an embodiment of this application.

[0071] In one embodiment of this application, such as Figure 1 , Figure 3 and Figure 22 As shown, the first light-blocking structures 41 on the sidewalls of adjacent pixel circuit islands 02 are set separately, that is, there is no connection between the first light-blocking structures 41 set on the sidewalls of different pixel circuit islands 02.

[0072] In one technical solution corresponding to this embodiment, such as Figure 1 and Figure 3 As shown, there is no connection between the first light-blocking structures 41 on the sidewalls of different pixel circuit islands 02, and the first light-blocking structures 41 on the sidewalls of the same pixel circuit island 02 are continuous structures, that is, only one first light-blocking structure 41 is provided on the sidewalls of the same pixel circuit island 02.

[0073] In one technical solution corresponding to this embodiment, such as Figure 22 As shown, the first light-blocking structures 41 on the sidewalls of different pixel circuit islands 02 are not connected, and at least two unconnected first light-blocking structures 41 are provided on the sidewalls of the same pixel circuit island 02, that is, at least two independent first light-blocking structures 41 are provided on the sidewalls of the same pixel circuit island 02.

[0074] Figure 23 This is a plan view of a display panel provided in an embodiment of this application.

[0075] In one embodiment of this application, such as Figure 23 As shown, the light-blocking structure 04 also includes a connecting structure 40. At least some of the first light-blocking structures 41 disposed on the sidewalls of adjacent pixel circuit islands 02 are connected to each other through the connecting structure 40, that is, multiple connecting structures 40 connect the first light-blocking structures 41 on the sidewalls of multiple pixel circuit islands 02.

[0076] In this embodiment, as Figure 23 As shown, along the direction perpendicular to the surface of the display panel 001, at least a portion of the area between adjacent pixel circuit islands 02 does not overlap with the light-blocking structure 04. When the connecting structure 40 connects to the first light-blocking structure 41 on the sidewall of an adjacent pixel circuit island 02, the connecting structure 40 will necessarily be located in the area between adjacent pixel circuit islands 02. However, the connecting structure 40 is not located in all areas between pixel circuit islands 02; that is, the connecting structure 40 is located in at least a portion of the area between some pixel circuit islands 02 to ensure the light transmittance of the area between adjacent pixel circuit islands 02. For example, no connecting structure 40 is located in the first region R1.

[0077] In one technical solution corresponding to this embodiment, such as Figure 23 As shown, all the first light-blocking structures 41 are connected together by the connecting structure 40.

[0078] In one technical solution of this application, since the cathodes 32 of all light-emitting devices 03 in the display panel 001 can receive the same signal, when the second light-blocking structure 42 is connected to the cathode 32 of the light-emitting device 03, all the second light-blocking structures 42 electrically connected to the cathode 32 of the light-emitting device 03 can be electrically connected together. One implementation is that all the second light-blocking structures 42 electrically connected to the cathode 32 of the light-emitting device 03 are electrically connected together through a first light-blocking structure 41 and a connecting structure 40.

[0079] Figure 24 This is a plan view of a display panel provided in an embodiment of this application.

[0080] In one technical solution corresponding to this embodiment, such as Figure 24As shown, first light-blocking structures 41 that are not connected to each other are provided on the sidewalls of pixel circuit islands 02. Then, in adjacent pixel circuit islands 02, a first light-blocking structure 41 on one pixel circuit island 02 can be connected to a first light-blocking structure 41 on another pixel circuit island 02 through a connecting structure.

[0081] In one embodiment of this application, at least a portion of the light-blocking structure 04 is electrically connected to and transmits signals to the transistor 200 in the pixel circuit 20. For example, if at least a portion of the second light-blocking structure 42 is multiplexed as a source 23, then that portion of the second light-blocking structure 42 provides a signal to the source 23; or if at least a portion of the second light-blocking structure 42 is multiplexed as a gate, then that portion of the second light-blocking structure 42 provides a signal to the gate 22.

[0082] Figure 25 This is a schematic diagram of a display panel provided in an embodiment of this application.

[0083] like Figure 18 As shown, when at least a portion of the second light-blocking structure 42 is reused as the source 23 of the transistor 200, if this portion of the second light-blocking structure 42 is electrically connected to the first light-blocking structure 41, combined with Figure 18 and Figure 25 As shown, the first light-blocking structure 41 electrically connected to the second light-blocking structure 42 is also electrically connected to the source 23 of the transistor 200 and transmits signals to the source 23 of the transistor 200. For example, at least some of these first light-blocking structures 41 can be electrically connected together through the connecting electrode 30 to form a first signal line, and these first light-blocking structures 41 are part of the first signal line.

[0084] It should be noted that the pixel circuit 20 includes multiple transistors 200. The second light-blocking structure 42 reused by the source 23 of the transistors 200 connected to different first signal lines in the pixel circuit 20 is electrically insulated; the source 23 of the transistors 200 connected to the same first signal line can reuse the same second light-blocking structure 42.

[0085] Figure 26 This is a cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application. Figure 27 For inclusion Figure 26 A planar schematic diagram of the light-blocking structure in the display panel of the pixel circuit island shown.

[0086] Combination Figure 26 and Figure 27When at least a portion of the second light-blocking structure 42 is multiplexed as the gate of the transistor 200, if this portion of the second light-blocking structure 42 is electrically connected to the first light-blocking structure 41, then the first light-blocking structure 41 to which this portion of the second light-blocking structure 42 is electrically connected is also electrically connected to the gate 22 of the transistor and transmits the scanning voltage to the gate 22 of the transistor 200. For example, if at least a portion of these first light-blocking structures 41 are electrically connected together through the connection structure 40 to form a second signal line, then the first light-blocking structure 41 is a part of the second signal line.

[0087] It should be noted that the pixel circuit 20 includes multiple transistors 200. The second light-blocking structure 42 reused by the gates 22 of the transistors 200 connected to different second signal lines in the pixel circuit 20 is electrically insulated; the gates 22 of the transistors 200 connected to the same second signal line can reuse the same second light-blocking structure 42.

[0088] In the embodiments of this application, at least part of the light-blocking structure 04 is a transistor 200 that transmits at least one of the following signals: scan voltage, data voltage, power supply voltage, and reset voltage.

[0089] In one implementation, the light-blocking structure 04 includes a first type of light-blocking structure, which is electrically connected to the transistor 200 and transmits signals to the transistor 200. For example... Figure 24 , Figure 25 and Figure 28 As shown, the first type of light-blocking structure includes multiple first light-blocking structures 41 and a connecting structure 40 connecting adjacent first light-blocking structures 41, or the first type of light-blocking structure includes multiple first light-blocking structures 41, multiple second light-blocking structures 42 and a connecting structure 40 connecting adjacent first light-blocking structures 41. The first type of light-blocking structure can be regarded as a first signal line and / or a second signal line.

[0090] The first type of light-blocking structure includes a first part and a second part. The orthographic projection of the first part onto the substrate 01 overlaps with the orthographic projection of the pixel circuit 20 onto the substrate 01, while the orthographic projection of the second part onto the substrate 01 does not overlap with the orthographic projection of the pixel circuit 20 onto the substrate 01. The width of the first part along the direction perpendicular to the extension of the first type of light-blocking structure is greater than the width of the second part along the same direction. That is, as... Figure 24 , Figure 25 and Figure 28 As shown, the width of the first light-blocking structure 41 in the first type of light-blocking structure is greater than the width of the connecting structure 40, or the sum of the widths of the first light-blocking structure 41 and the second light-blocking structure 42 in the first type of light-blocking structure is greater than the width of the connecting structure 40.

[0091] For example, such as Figure 24 and Figure 25As shown, the first type of light-blocking structure includes a first part and a second part alternately arranged along the column direction. The first part overlaps with the pixel circuit 20, while the second part does not overlap with the pixel circuit 20. Figure 28 As shown, the first type of light-blocking structure includes a first part and a second part that are alternately arranged along the row direction. The first part overlaps with the pixel circuit 20, and the second part does not overlap with the pixel circuit 20.

[0092] In this implementation, the first type of light-blocking structure includes multiple first parts and multiple second parts, and the arrangement direction of the first parts and the second parts in the first type of light-blocking structure is basically parallel to the length extension direction of the first type of light-blocking structure.

[0093] By making the portion of the first type of light-blocking structure that overlaps with the pixel circuit 20 wider, light can be effectively blocked from being irradiated from the outside into the semiconductor layer included in the transistor 200 of the pixel circuit 20.

[0094] Figure 28 This is a cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application.

[0095] The light-blocking structure 04 includes a reflective structure 04a and a light-absorbing structure 04b, with the light-absorbing structure 04b located on the side of the reflective structure 04a away from the substrate 01. Specifically, at least a portion of the reflective structure 04a is located on the sidewall of the pixel circuit island 02 closest to the substrate 01, and this portion of the reflective structure 04a can reflect light emitted from adjacent sub-pixels back to the light-emitting surface corresponding to that adjacent sub-pixel; and at least a portion of the light-absorbing structure 04b is located on the sidewall of the pixel circuit island 02 away from the substrate 01, and this portion of the light-absorbing structure 04b can prevent optical crosstalk between adjacent sub-pixels.

[0096] Figure 29 This is a cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application. Figure 30 for Figure 29 A schematic diagram of the projection of the middle part of the structure.

[0097] In one embodiment of this application, such as Figure 29 and Figure 30 As shown, the light-blocking structure 04 also includes a third light-blocking structure 43, and the third light-blocking structure 43 is disposed on the side of the semiconductor layer 21 of the transistor 200 included in the pixel circuit 20 in the pixel circuit island 02 away from the light-emitting device 03.

[0098] Furthermore, along a direction perpendicular to the surface of the display panel 001, the third light-blocking structure 43 covers the channel region of the semiconductor layer 21 (the area where the semiconductor layer 21 overlaps with the gate 22). That is, the third light-blocking structure 43 is located between the channel region of the semiconductor layer 21 and the substrate 01, and the area of ​​the third light-blocking structure 43 is larger than the area of ​​the channel region. Thus, the third light-blocking structure 43 can prevent light incident on the side of the semiconductor layer 21 near the substrate 01 from affecting the channel region of the semiconductor layer 21.

[0099] In one technical solution corresponding to this embodiment, the third light-blocking structure 43 includes a light-absorbing structure. When the light emitted by the light-emitting device 03 propagates downward, it can be absorbed by the third light-blocking structure 43, preventing the light from being reflected and incident on the semiconductor layer 21.

[0100] In one technical solution corresponding to this embodiment, the third light-blocking structure 43 includes a reflective structure, and the reflective structure is in contact with the substrate 01. Since the reflective structure is usually made of metal, contacting the reflective structure included in the third light-blocking structure 43 with the substrate 01 can increase the heat dissipation efficiency of the pixel circuit island 02.

[0101] Figure 31 This is a cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application.

[0102] In one technical solution corresponding to this embodiment, such as Figure 31 As shown, at least a portion of the third light-blocking structure 43 is connected to at least a portion of the first light-blocking structure 41.

[0103] In one technical solution corresponding to this embodiment, such as Figure 31 As shown, at least a portion of the light-blocking structures 04 disposed on the pixel circuit island 02 include a first light-blocking structure 41 and a third light-blocking structure 43, but do not include a second light-blocking structure 42. In one implementation, all the first light-blocking structures 41 disposed on the sidewall of the pixel circuit island 02 can be connected to a third light-blocking structure 43.

[0104] Figure 32 This is a cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application.

[0105] In one technical solution corresponding to this embodiment, such as Figure 32 As shown, the light-blocking structure 04 disposed on at least part of the pixel circuit island 02 may simultaneously include a first light-blocking structure 41, a second light-blocking structure 42 and a third light-blocking structure 43, wherein the first light-blocking structure 41 and the second light-blocking structure 42 may be disposed in any of the above embodiments.

[0106] It should be noted that when multiple first light-blocking structures 41, which are electrically connected to different structures, are provided on the side wall of a pixel circuit island 02, these first light-blocking structures 41 should not be connected to the same third light-blocking structure 43.

[0107] In one embodiment of this application, at least a portion of the light-blocking structure 04 includes a light-absorbing structure and at least a portion of the light-blocking structure 04 includes a reflective structure. The light-absorbing structure may include a metal sulfide, and the reflective structure may include a metal. The specific composition of the light-blocking structure 04 can be selected based on its location and / or connection structure.

[0108] For example, the second light-blocking structure 42 in the light-blocking structure 04 may include a reflective structure facing the light-emitting device 03. This reflective structure can reflect the light emitted by the light-emitting device 03 that is directed toward the pixel circuit 20 back to the side of the light-emitting device 03, thereby improving the brightness of the display panel.

[0109] For example, the third light-blocking structure 43 in the light-blocking structure 04 may include a light-absorbing structure facing the pixel circuit 20. This light-absorbing structure can absorb the light emitted by the light-emitting device 03 that is directed toward the pixel circuit 20, thereby preventing the light from shining from the side of the pixel circuit 20 away from the light-emitting device 03 toward the semiconductor layer.

[0110] Figure 33 This is a schematic diagram of a light-blocking structure in a display panel provided in an embodiment of this application.

[0111] In one technical solution corresponding to this embodiment, such as Figure 33 As shown, at least part of the light-blocking structure 04 includes a light-absorbing structure 04b and a reflective structure 04a stacked together.

[0112] Figure 34 This is a schematic diagram of a light-blocking structure in a display panel provided in an embodiment of this application.

[0113] Optionally, such as Figure 34 As shown, the light-absorbing structure 04b includes molybdenum sulfide and the light-reflecting structure 04a includes silver.

[0114] In this technical solution, when the light-absorbing structure 04b in the stacked light-absorbing structure 04b and the reflective structure 04a includes molybdenum sulfide and the reflective structure 04a includes silver, a barrier layer 04c is also included between the stacked light-absorbing structure 04b and the reflective structure 04a. The barrier layer 04c includes molybdenum, which can prevent silver from reacting with molybdenum sulfide.

[0115] Furthermore, a protective layer 04d is provided on the side of the reflective structure 04a away from the pixel circuit island 02. The protective layer 04d includes a metal oxide film. Since the reflective structure 04a is typically made of metal, it is easily oxidized or corroded if exposed to the outside. Therefore, providing a metal oxide film on its surface effectively protects the reflective structure 04a. Specifically, the protective layer 04d can be a transparent metal oxide film, such as ITO, to avoid affecting the reflective effect of the reflective structure 04a.

[0116] Figure 35 This is a cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application.

[0117] In one technical solution corresponding to this embodiment, such as Figure 35 As shown, in the light-absorbing structure 04b and the reflective structure 04a stacked together in at least part of the light-blocking structure 04, the reflective structure 04a is disposed on the side of the light-absorbing structure 04b away from the pixel circuit 20.

[0118] For example, such as Figure 35 As shown, the first light-blocking structure 41, the second light-blocking structure 42, and the third light-blocking structure 43 all include a stacked light-absorbing structure 04b and a reflective structure 04a. The reflective structure 04a in the first light-blocking structure 41 is located on the side of the light-absorbing structure 04b away from the pixel circuit 20; the reflective structure 04a in the second light-blocking structure 42 is located on the side of the light-absorbing structure 04b away from the pixel circuit 20; and the reflective structure 04a in the third light-blocking structure 43 is located on the side of the light-absorbing structure 04b away from the pixel circuit 20. The reflective structures 04a in the first light-blocking structure 41 and the second light-blocking structure 42 can reflect the light emitted by the light-emitting device 03 towards the substrate 01 and then emit it through the light-emitting surface of the display panel 001, thereby improving the brightness of the display panel 001.

[0119] Figure 36 This is a cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application.

[0120] In one implementation of this technical solution, the reflective structure 04a, which is stacked with a light-absorbing structure 04b, has a concave surface on its surface away from the pixel circuit 20. By setting the surface of the reflective structure 04a to include a concave structure, the light-gathering effect of the reflective structure 04a can be improved, further increasing the brightness of the display panel 001.

[0121] Figure 37 This is a cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application.

[0122] In one implementation of this technical solution, in the stacked light-absorbing structure 04b and reflective structure 04a, a metal oxide film is disposed on the side of the reflective structure 04a away from the light-absorbing structure 04b. Since the reflective structure 04a is usually made of metal, when the reflective structure 04a is disposed on the side of the light-absorbing structure 04b away from the pixel circuit 20, the reflective structure 04a is easily oxidized or corroded if exposed. Therefore, disposing of a metal oxide film on its surface can effectively protect the reflective structure 04a.

[0123] Figure 38 This is a cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application.

[0124] In one technical solution corresponding to this embodiment, such as Figure 38 As shown, in the light-absorbing structure 04b and the reflective structure 04a stacked together in at least part of the light-blocking structure 04, the light-absorbing structure 04b is disposed on the side of the reflective structure 04a away from the pixel circuit 20.

[0125] For example, such as Figure 38 As shown, the first light-blocking structure 41, the second light-blocking structure 42, and the third light-blocking structure 43 all include a light-absorbing structure 04b and a reflective structure 04a stacked together. The light-absorbing structure 04b in the first light-blocking structure 41 is disposed on the side of the reflective structure 04a away from the pixel circuit 20, and the light-absorbing structure 04b in the second light-blocking structure 42 is disposed on the side of the reflective structure 04a away from the pixel circuit 20.

[0126] In some embodiments, the first light-blocking structure 41, the second light-blocking structure 42, and the third light-blocking structure 43 each include a light-absorbing structure 04b and a reflective structure 04a stacked together. The reflective structure 04a in the first light-blocking structure 41 is disposed on the side of the light-absorbing structure 04b close to the pixel circuit 20, the reflective structure 04a in the second light-blocking structure 42 is disposed on the side of the light-absorbing structure 04b close to the pixel circuit 20, and the reflective structure 04a in the third light-blocking structure 43 is disposed on the side of the light-absorbing structure 04b away from the pixel circuit 20.

[0127] Figure 39 This is a cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application.

[0128] In one embodiment of this application, such as Figure 39 As shown, the first light-blocking structure 41 includes two stacked light-absorbing structures 04b, wherein one light-absorbing structure 04b can be a black organic material, and the other light-absorbing structure 04b can be a passivation layer, and the light-absorbing structure 04b composed of the passivation layer is located on the side of the light-absorbing structure composed of the black pixel limiting layer away from the pixel circuit island 02.

[0129] In one embodiment of this application, such as Figure 39 As shown, at least a portion of the second light-blocking structure 42 includes a reflective structure 04a and a light-absorbing structure 04b stacked together. The reflective structure 04a can be disposed on the same layer as the electrode on the pixel circuit island 02 that is electrically connected to the anode 31 of the light-emitting device 03. The light-absorbing structure 04b can be the same as and continuous with the light-absorbing structure 04b in the first light-blocking structure 41. The light-absorbing structure 04b in the second light-blocking structure 42 can be disposed on the side of the reflective structure 04a away from the pixel circuit island 02.

[0130] In one embodiment of this application, such as Figure 39 As shown, the third light-blocking structure 43 includes a light-absorbing structure 04b, and the light-absorbing structure 04b is disposed on the side of the pixel circuit 20 facing the substrate 01. A buffer layer is disposed between the third light-blocking structure 43 and the semiconductor layer 21 included in the transistor 200 of the pixel circuit 20, and a buffer layer is disposed between the third light-blocking structure 43 and the substrate 01.

[0131] Figure 40 This is a cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application.

[0132] In one embodiment of this application, such as Figure 40 As shown, the sidewall of pixel circuit island 02 includes a third part P3 and a fourth part P4. The third part P3 is located on the side of the fourth part P4 closest to the substrate 01. The angle between the third part P3 and the surface of the substrate 01 is smaller than the angle between the fourth part P4 and the surface of the substrate 01, i.e., α > θ. Here, α is the angle between the third part P3 and the surface of the substrate 01, and θ is the angle between the fourth part P4 and the surface of the substrate 01. In one technical solution corresponding to this embodiment, the third part P3 includes inorganic materials, that is, the third part P3 is an insulating layer made of at least a portion of inorganic materials on the sidewall of the pixel circuit island 02; the fourth part P4 includes organic materials, that is, the fourth part P4 is an insulating layer made of at least a portion of organic materials on the sidewall of the pixel circuit island 02.

[0133] In one technical solution corresponding to this embodiment, the first light-blocking structure 41 includes a light-absorbing structure 04b and a light-reflecting structure 04a; wherein, the third part P3 is in contact with the light-reflecting structure 04a, and the fourth part P4 is in contact with the light-absorbing structure 04b.

[0134] In some embodiments of this application, the angle between any different positions on the sidewall of the pixel circuit island 02 and the substrate 01 can be substantially the same. Therefore, the tilt angles of the sidewalls corresponding to inorganic materials and the sidewalls corresponding to organic materials in the pixel circuit island 02 are substantially the same, i.e., α = θ. In this embodiment, the sidewalls of the pixel circuit island 02 are relatively smooth, making it easy to achieve the continuity and integrity of the light-blocking structure 04 disposed on the sidewalls of the pixel circuit island 02.

[0135] Figure 41 This is a cross-sectional schematic diagram of a pixel circuit island in a display panel provided in an embodiment of this application.

[0136] Combination Figure 40 and Figure 41 In the technical solution provided in this application embodiment, the insulating layer 05 included in the pixel circuit island 02 includes an inorganic insulating layer 51 and an organic insulating layer 52. The inorganic insulating layer 51 is mainly disposed at the position corresponding to the third part P3, and the organic insulating layer 52 is mainly disposed at the position corresponding to the fourth part P4.

[0137] The inorganic insulating layer 51 mainly includes a buffer layer, a gate insulating layer, an interlayer insulating layer, and a passivation layer. The buffer layer is located between the substrate 01 and the transistor 200, which are both between the film layers. The gate insulating layer is located between the film layer containing the gate 22 and the film layer containing the semiconductor layer 21. The interlayer insulating layer is located between the film layers containing the source 23 and the drain 24 and the film layer containing the gate 22 (the interlayer insulating layer may include two layers, and at least one electrode of a capacitor is included between the two layers). The passivation layer is located on the side of the film layers containing the source 23 and the drain 24 away from the substrate 01.

[0138] The organic insulating layer 52 mainly includes a planarization layer, which is located on the side of the film layer where the pixel circuit 20 is located away from the substrate 01. The planarization layer may include two layers, and a transition electrode 06 may be included between the two layers. The transition electrode 06 can electrically connect the light-emitting device 03 and the pixel circuit 20.

[0139] The inorganic insulating layer 51 has a wider area than the organic insulating layer 52, and the organic insulating layer 52 closer to the inorganic insulating layer 51 has a wider area than the organic insulating layer 52 farther from the inorganic insulating layer 51. Furthermore, the width difference between the organic insulating layer 52 closer to the inorganic insulating layer 51 and the inorganic insulating layer 51 is greater than the width difference between the organic insulating layer 52 farther from the inorganic insulating layer 51 and the organic insulating layer 52 closer to the inorganic insulating layer 51.

[0140] This can also be understood as the area of ​​the inorganic insulating layer 51 projected onto the substrate 01 being larger than the area of ​​the organic insulating layer 52 projected onto the substrate 01, and the area of ​​the organic insulating layer 52 projected onto the substrate 01 closer to the inorganic insulating layer 51 being larger than the area of ​​the organic insulating layer 52 projected onto the substrate 01 further away from the inorganic insulating layer 51.

[0141] Figure 42 This is a schematic diagram of a display device provided in an embodiment of this application.

[0142] like Figure 42 As shown, this application embodiment also provides a display device, including the display panel 001 provided in any of the above embodiments. Exemplary examples show that the display device may be an electronic device such as a mobile phone, computer, smart wearable device (e.g., smartwatch), and in-vehicle display device; this embodiment of the invention does not limit the scope of the application to this type of device.

[0143] In this embodiment of the application, by providing a first light-blocking structure 41 on the sidewall of the pixel circuit island 02, the first light-blocking structure 41 can prevent light from the outside of the pixel circuit island 02 from entering the interior of the pixel circuit island 02 through the sidewall of the pixel circuit island 02, thereby reducing the amount of light from the outside of the pixel circuit island 02 entering the semiconductor layer 21 of the transistor 200 included in the pixel circuit island 02, and ensuring the stable performance of the pixel circuit 20 included in the pixel circuit island 02.

[0144] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A display panel, characterized in that, include: Substrate; A pixel circuit island is disposed on one side of the substrate. The pixel circuit island includes at least one pixel circuit, the pixel circuit includes a transistor, and the transistor includes a semiconductor layer. A light-emitting device is disposed on the side of the pixel circuit island away from the substrate, and the light-emitting device is electrically connected to the pixel circuit. A light-blocking structure is provided, comprising a first light-blocking structure and a second light-blocking structure. The first light-blocking structure is disposed on the sidewall of the pixel circuit island, and the second light-blocking structure is disposed between the semiconductor layer and the light-emitting device. The second light-blocking structure is a conductive structure, and the display panel satisfies at least one of the following: At least a portion of the second light-blocking structure connects the anode of the light-emitting device to the pixel circuit; or, At least a portion of the second light-blocking structure is connected to the cathode of the light-emitting device; or, At least a portion of the second light-blocking structure is reused as at least one of the source, drain, and gate of the transistor.

2. The display panel according to claim 1, characterized in that, Along a direction perpendicular to the plane of the display panel, the second light-blocking structure covers the channel region of the semiconductor layer.

3. The display panel according to claim 1, characterized in that, At least a portion of the second light-blocking structure connects the anode of the light-emitting device to the pixel circuit; The pixel circuit island includes a plurality of pixel circuits, and the plurality of pixel circuits are respectively connected to the anode of the corresponding light-emitting device through different second light-blocking structures.

4. The display panel according to claim 1, characterized in that, At least a portion of the second light-blocking structure is connected to the cathode of the light-emitting device; The pixel circuit island includes a plurality of pixel circuits, and the cathodes of the light-emitting devices to which the plurality of pixel circuits are respectively connected are connected to the same second light-blocking structure.

5. The display panel according to claim 1, characterized in that, Part of the second light-blocking structure is connected to the anode of the light-emitting device, and another part of the second light-blocking structure is connected to the cathode of the light-emitting device.

6. The display panel according to claim 1, characterized in that, At least a portion of the first light-blocking structure and at least a portion of the second light-blocking structure on the same pixel circuit island are interconnected.

7. The display panel according to claim 6, characterized in that, The second light-blocking structure on the pixel circuit island is electrically insulated from the light-emitting device and from the pixel circuit, or the second light-blocking structure on the pixel circuit island is electrically connected only to the same structure. The first light-blocking structure on the sidewall of the pixel circuit island is a continuous structure and is connected to the second light-blocking structure.

8. The display panel according to claim 6, characterized in that, At least two second light-blocking structures on the pixel circuit island are connected to different structures. The first light-blocking structure on the pixel circuit island is a discontinuous structure, and the second light-blocking structures connected to different structures are connected to different first light-blocking structures.

9. The display panel according to claim 1, characterized in that, The display panel must satisfy at least one of the following: The first light-blocking structure on the sidewall of the same pixel circuit island is a continuous structure; or, The sidewalls of the same pixel circuit island include at least two first light-blocking structures that are not connected to each other.

10. The display panel according to claim 1, characterized in that, There is no connection between the first light-blocking structures disposed on the sidewalls of the different pixel circuit islands.

11. The display panel according to claim 1, characterized in that, The light-blocking structure further includes a connecting structure, wherein at least some of the first light-blocking structures disposed on the sidewalls of the adjacent pixel circuit islands are interconnected through the connecting structure. At least a portion of the area between adjacent pixel circuit islands is not provided with the connection structure.

12. The display panel according to claim 11, characterized in that, The sidewall of the same pixel circuit island includes at least two first light-blocking structures that are not connected to each other; In adjacent pixel circuit islands, one of the first light-blocking structures on one pixel circuit island is interconnected with another of the first light-blocking structures on another pixel circuit island through the connection structure.

13. The display panel according to claim 1, characterized in that, The light-blocking structure further includes a third light-blocking structure, which is located on the side of the semiconductor layer away from the light-emitting device; Along a direction perpendicular to the plane of the display panel, the third light-blocking structure covers the channel region of the semiconductor layer; wherein, The display panel must satisfy at least one of the following: The light-blocking structure of at least a portion of the pixel circuit island includes the first light-blocking structure and the third light-blocking structure, but does not include the second light-blocking structure; or, The light-blocking structure on at least part of the pixel circuit island includes a first light-blocking structure, a second light-blocking structure, and a third light-blocking structure.

14. The display panel according to claim 1, characterized in that, At least a portion of the second light-blocking structure includes a reflective structure and a light-absorbing structure stacked together, wherein the light-absorbing structure in the second light-blocking structure is located on the side of the reflective structure away from the pixel circuit island.

15. The display panel according to claim 14, characterized in that, The first light-blocking structure includes a light-absorbing structure; The light-absorbing structure in the second light-blocking structure is the same as and continuous with the light-absorbing structure in the first light-blocking structure.

16. The display panel according to claim 1, characterized in that, The first light-blocking structure includes two stacked light-absorbing structures. In the two stacked light-absorbing structures of the first light-blocking structure, one light-absorbing structure is a black organic material, and the other light-absorbing structure is a passivation layer. The passivation layer is located on the side of the black organic material away from the pixel circuit island.

17. The display panel according to claim 1, characterized in that, The light-blocking structure includes a first type of light-blocking structure, which is electrically connected to the transistor and transmits signals to the transistor. The first type of light-blocking structure includes a first part and a second part, wherein the orthographic projection of the first part on the substrate overlaps with the orthographic projection of the pixel circuit on the substrate, and the orthographic projection of the second part on the substrate does not overlap with the orthographic projection of the pixel circuit on the substrate; The width of the first part is greater than the width of the second part.

18. A display device, characterized in that, Includes the display panel as described in any one of claims 1-17.

Images