Display panel

Abstract

The invention provides a display panel which comprises a display area, the display area comprises a plurality of light-emitting sub-areas and a plurality of light-transmitting sub-areas, each light-transmitting sub-area is arranged on at least one side of the corresponding light-emitting sub-area, the display panel comprises a driving circuit layer, a light-emitting device and at least one light shielding layer, the driving circuit layer comprises a transistor located in the light-emitting sub-area and is provided with a light-transmitting hole located in the light-transmitting sub-area, the light-emitting device is located in the light-emitting sub-area, the light-emitting device is arranged on the driving circuit layer and is electrically connected to the corresponding transistor, the light-shielding layer is provided with at least one light-shielding part, and the light-shielding part covers at least part of the side wall of the light-transmitting hole. According to the display panel, the light rays irradiated to the side wall of the light hole are shielded by the shading part to prevent the light rays from irradiating to the transistor through the side wall of the light hole, so that the electrical property of the transistor is not influenced by the light rays, and the display effect of the display panel can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel. BACKGROUND

[0002] Micro light emitting diode refers to a light emitting diode device with a distance between pixels in the micron level. As a new generation of display technology, micro light emitting diode display technology has the advantages of small size, wide color gamut, high brightness, long service life, low working voltage, high luminous efficiency, fast response speed, stable and reliable performance, wide working temperature range, and can well meet various needs. It is the mainstream development direction of future micro display technology.

[0003] Transparent display panel refers to a display panel itself having a certain degree of light transmittance, which can not only see the picture displayed by the display panel, but also see the information behind the display panel. At present, transparent display panel has been applied in high-end display fields such as vehicle window glass, shopping mall window, augmented reality, virtual reality, etc. In order to improve the light transmittance of the transparent display panel, a light transmission hole needs to be arranged between the sub-pixels of the transparent display panel, so that the ambient light can pass through the light transmission hole and pass through the transparent display panel. However, the ambient light can be irradiated to the active layer of the display panel through the side wall of the light transmission hole, so that the electrical performance of the transistor is deteriorated, resulting in that the display effect of the display panel is affected.

[0004] Therefore, it is necessary to provide a display panel to improve this defect. SUMMARY

[0005] Embodiments of the present application provide a display panel, which can improve the display effect of the display panel.

[0006] In order to achieve the above purpose, according to the first aspect of the present application, a display panel is provided, comprising a display area, the display area comprising a plurality of light emitting sub-areas and a plurality of light transmission sub-areas, each light transmission sub-area being arranged on at least one side of the corresponding light emitting sub-area, the display panel comprising:

[0007] a driving circuit layer comprising a transistor located in the light emitting sub-area and provided with a light transmission hole located in the light transmission sub-area;

[0008] a light emitting device located in the light emitting sub-area, arranged on the driving circuit layer and electrically connected to the corresponding transistor; and

[0009] at least one light shielding layer having at least one light shielding part;

[0010] Wherein, the light shielding part covers at least part of the side wall of the light transmission hole.

[0011] Optionally, the light shielding part covers part of the side wall of the light transmission hole close to the light emitting sub-area

[0012] Optionally, the light-shielding part completely covers the sidewall of the light-transmitting hole.

[0013] Optionally, at least one of the light-shielding layers further comprises at least one main part, the main part being arranged on the driving circuit layer and exposing the light-emitting device.

[0014] Optionally, the display comprises two light-shielding layers, the two light-shielding layers comprising:

[0015] a first light-shielding layer arranged on the driving circuit layer;

[0016] a second light-shielding layer arranged on the first light-shielding layer;

[0017] wherein,

[0018] the first light-shielding layer comprises one main part and one light-shielding part, the main part and the light-shielding part being arranged continuously, and the second light-shielding layer comprises another main part;

[0019] or, the first light-shielding layer comprises one main part, and the second light-shielding layer comprises another main part and another light-shielding part, the another main part and the another light-shielding part being arranged continuously;

[0020] or, the first light-shielding layer comprises one main part and one light-shielding part, the main part and the light-shielding part being arranged continuously, and the second light-shielding layer comprises another main part and another light-shielding part, the another main part and the another light-shielding part being arranged continuously.

[0021] Optionally, the materials of the first light-shielding layer and the second light-shielding layer both comprise metal, the thickness of the first light-shielding layer is greater than or equal to 400 angstrom and less than or equal to 600 angstrom, and the thickness of the second light-shielding layer is greater than or equal to 30 angstrom and less than or equal to 120 angstrom.

[0022] or, the material of one of the first light-shielding layer and the second light-shielding layer comprises black photoresist, the optical density of the black photoresist being greater than or equal to 3 and less than or equal to 4.

[0023] Optionally, the display panel further comprises at least one inorganic insulating layer, the inorganic insulating layer being arranged on the corresponding light-shielding layer and comprising an inorganic insulating subpart.

[0024] wherein, the inorganic insulating subpart covers the light-shielding part.

[0025] Optionally, the included angle between the sidewall of the light-transmitting hole and the plane where the bottom of the light-transmitting hole is located is greater than or equal to 60 degrees and less than or equal to 80 degrees.

[0026] Optionally, the display panel further includes an encapsulation layer that covers the light-emitting device;

[0027] The encapsulation layer is provided with an encapsulation light-transmitting hole, which is directly opposite to and connected to the light-transmitting hole to allow light to pass through the encapsulation light-transmitting hole and the light-transmitting hole.

[0028] Optionally, the radial distance between the bottom of the wall of the light-transmitting hole and the bottom of the wall of the light-transmitting hole is greater than or equal to 1 micrometer and less than or equal to 2 micrometers.

[0029] In the display panel of this application embodiment, by covering at least a portion of the sidewall of the light-transmitting hole with a light-shielding part, the light shining on the sidewall of the light-transmitting hole is blocked by the light-shielding part, so as to prevent the light from shining on the transistor through the sidewall of the light-transmitting hole. In this way, the electrical performance of the transistor can be guaranteed not to be affected by light, thereby improving the display effect of the display panel.

[0030] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of 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.

[0032] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0033] Figure 1 A top view of a display panel provided for an embodiment of this application;

[0034] Figure 2 A partial schematic diagram of the display area of ​​a first type of display panel provided for an embodiment of this application;

[0035] Figure 3 The first type of display panel provided for embodiments of this application is along Figure 2 The cross-sectional view along the A-A' direction shown;

[0036] Figure 4 The second type of display panel provided for embodiments of this application is along Figure 2 The cross-sectional view along the A-A' direction shown;

[0037] Figure 5 A partial schematic diagram of the display area of ​​a third type of display panel provided for an embodiment of this application;

[0038] Figure 6 The third type of display panel provided for embodiments of this application is along Figure 5 The cross-sectional view along the B-B' direction shown;

[0039] Figure 7 The fourth type of display panel provided for embodiments of this application is along Figure 5 The cross-sectional view along the B-B' direction shown;

[0040] Figure 8 The fifth type of display panel provided for embodiments of this application is along Figure 5 The cross-sectional view along the B-B' direction shown;

[0041] Figure 9 A schematic diagram of a display device provided for an embodiment of this application.

[0042] Figure label:

[0043] 1. Driving circuit layer; 101. Transistor; 102. Light-transmitting hole; 110. Buffer layer; 111. Active layer; 112. First gate insulating layer; 113. First gate layer; 114. Second gate insulating layer; 115. Second gate layer; 116. First interlayer dielectric layer; 117. First source-drain layer; 118. First planarization layer; 119. Second source-drain layer; 120. Second planarization layer; 121. Third source-drain layer; 122. Third planarization layer; 123. First passivation layer; 124. Fourth source-drain layer;

[0044] 2. Light-emitting devices;

[0045] 3. Substrate;

[0046] 4. Light-shielding layer; 401. Light-shielding part; 4011. First light-shielding part; 4012. Second light-shielding part; 402. Main body part; 4021. First main body part; 4022. Second main body part; 41. First light-shielding layer; 42. Second light-shielding layer;

[0047] 5. Inorganic insulation layer; 501. Inorganic insulator part; 5011. First inorganic insulator part; 5012. Second inorganic insulator part; 51. First inorganic insulation layer; 52. Second inorganic insulation layer; 521. First inorganic insulation main body part; 53. Third inorganic insulation layer;

[0048] 6. Encapsulation layer; 61. Encapsulation light-transmitting hole;

[0049] AA, Display area; AA1, Light-emitting area; AA2, Light-transmitting area; NA, Non-display area;

[0050] 100. Display panel; 200. Housing; 300. Display device. Detailed Implementation

[0051] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0052] An embodiment of this application provides a display panel including a display area, which includes a plurality of light-emitting sub-regions and a plurality of light-transmitting sub-regions. Each light-transmitting sub-region is disposed on at least one side of a corresponding light-emitting sub-region. The display panel includes a driving circuit layer, a light-emitting device, and at least one light-shielding layer. The driving circuit layer includes a transistor located in the light-emitting sub-region and has a light-transmitting hole located in the light-transmitting sub-region. The light-emitting device is located in the light-emitting sub-region, disposed on the driving circuit layer, and electrically connected to the corresponding transistor. The light-shielding layer has at least one light-shielding portion that covers at least a portion of the sidewall of the light-transmitting hole.

[0053] In the embodiments of this application, by covering at least a portion of the sidewall of the light-transmitting hole with a light-shielding part, the light shining on the sidewall of the light-transmitting hole is blocked by the light-shielding part, so as to prevent the light from shining on the transistor through the sidewall of the light-transmitting hole. This ensures that the electrical performance of the transistor is not affected by light, thereby improving the display effect of the display panel.

[0054] Please see Figure 1 and Figure 2 , Figure 1 A top view of a display panel provided for an embodiment of this application. Figure 2 This is a partial schematic diagram of the display area of ​​a first type of display panel provided in an embodiment of this application. The display panel 100 includes a display area AA and a non-display area NA disposed around the display area AA. The display area AA includes a plurality of light-emitting sub-areas AA1 and a plurality of light-transmitting sub-areas AA2, and each light-transmitting sub-area AA2 is disposed on at least one side of the corresponding light-emitting sub-area AA1.

[0055] In the embodiments of this application, the shape and number of light-transmitting sub-regions AA2 can be adjusted according to the shape of the light-emitting sub-regions AA1. Each light-transmitting sub-region AA2 can be disposed only on one side of the corresponding light-emitting sub-region AA1 and located between adjacent light-emitting sub-regions AA1. One or more light-transmitting sub-regions AA2 can be disposed around each light-emitting sub-region AA1. Each light-transmitting sub-region AA2 can also be disposed on adjacent two or more sides of the corresponding light-emitting sub-region AA1 to form a partially enclosing structure of the light-emitting sub-region AA1.

[0056] Please see Figure 3 , Figure 3The first type of display panel provided for embodiments of this application is along Figure 2 The cross-sectional view along the A-A' direction shown shows that the display panel 100 includes a driving circuit layer 1 and a light-emitting device 2. The driving circuit layer 1 includes a transistor 101 located in the light-emitting sub-region AA1. The driving circuit layer 1 is provided with a light-transmitting hole 102 located in the light-transmitting sub-region AA2. The light-emitting device 2 is located in the light-emitting sub-region AA1. The light-emitting device 2 is disposed on the driving circuit layer 1 and is electrically connected to the corresponding transistor 101.

[0057] like Figure 3 As shown, the display panel 100 also includes a light-shielding layer 4, which has at least one light-shielding portion 401 covering at least a portion of the sidewall of the light-transmitting hole 102. By covering at least a portion of the sidewall of the light-transmitting hole 102 with the light-shielding portion 401, the light shining on the sidewall of the light-transmitting hole 102 is blocked by the light-shielding portion 401, preventing light from shining on the transistor 101 through the sidewall of the light-transmitting hole 102. This ensures that the electrical performance of the transistor 101 is not affected by light, thereby improving the display effect of the display panel.

[0058] In some embodiments, such as Figure 3 As shown, the display panel 100 includes a substrate 3, a driving circuit layer 1, and a light-emitting device 2. The driving circuit layer 1 is disposed on the substrate 3, and the light-emitting device 2 is disposed on the driving circuit layer 1. The light-transmitting hole 102 penetrates the driving circuit layer 1 in the thickness direction of the display panel and exposes the surface of the substrate 3 close to the driving circuit layer 1, thereby improving the transmittance of the light-transmitting sub-region AA2.

[0059] In some embodiments, such as Figure 3 As shown, the driving circuit layer 1 includes a buffer layer 110, an active layer 111, a first gate insulating layer 112, a first gate layer 113, a second gate insulating layer 114, a second gate layer 115, a first interlayer dielectric layer 116, a first source-drain layer 117, a first planarization layer 118, a second source-drain layer 119, a second planarization layer 120, a third source-drain layer 121, a third planarization layer 122, a first passivation layer 123, and a fourth source-drain layer 124, which are sequentially stacked on the substrate 3. The light-transmitting hole 102 penetrates the buffer layer 110, the first gate insulating layer 112, the second gate insulating layer 114, the first interlayer dielectric layer 116, the first planarization layer 118, the second planarization layer 120, the third planarization layer 122, and the first passivation layer 123 in the thickness direction of the display panel.

[0060] In some embodiments, the light-shielding portion 401 covers a portion of the sidewall of the light-transmitting hole 102 near the light-emitting sub-region AA1.

[0061] Combination Figure 2 and Figure 3As shown, each light-transmitting sub-area AA2 is arranged on one side of the corresponding light-emitting sub-area AA1, the light-blocking part 401 covers the side wall of the light-transmitting hole 102 close to the light-emitting sub-area AA1, and the light-blocking part 401 is laid along the side wall of the light-transmitting hole 102 close to the light-emitting sub-area AA1. In this way, the light-blocking part 401 can block the light irradiated to the side wall of the light-transmitting hole 102, so as to prevent the light from irradiating to the transistor 101 through the side wall of the light-transmitting hole 102. In this way, the electrical performance of the transistor 101 can be prevented from being affected by the light, so as to improve the display effect of the display panel.

[0062] In combination Figure 2 and Figure 3 As shown, the side wall of the light-transmitting hole 102 away from the light-emitting sub-area AA1 is not covered by the light-blocking part 401. The ambient light incident from the front of the display panel can enter the display panel through the side wall of the light-transmitting hole 102 away from the light-emitting sub-area AA1, and then exit from the display panel. The ambient light incident from the back of the display panel into the display panel can also exit from the side wall of the light-transmitting hole 102 away from the light-emitting sub-area AA1. In this way, the overall transmittance of the display panel can be further improved, so as to improve the transparent display effect of the display panel while preventing the electrical performance of the transistor 101 from being affected by the light.

[0063] In some embodiments, the at least one light-blocking layer 4 further has at least one main part 402. The main part 402 is arranged on the driving circuit layer 1 and exposes the light-emitting device 2. The main part 402 and the light-blocking part 401 are connected to each other to be arranged continuously. In this way, the light-blocking part 401 can be prepared synchronously by using the process of the main part 402. Therefore, no new film layer and related process are needed, and no new mask is needed. In this way, the production cost can be saved, the electrical performance of the transistor 101 can be prevented from being affected by the light, and the display effect of the display panel can be improved.

[0064] In some embodiments, as shown in Figure 3 The display panel 100 includes two light-blocking layers 4, which include two main parts 402 and one light-blocking part 401. The two light-blocking layers include a first light-blocking layer 41 and a second light-blocking layer 42. The first light-blocking layer 41 is arranged on the driving circuit layer 1, and the second light-blocking layer 42 is arranged on the first light-blocking layer 41. One of the first light-blocking layer 41 and the second light-blocking layer 42 includes one of the main part 402 and the light-blocking part 401, and the other of the first light-blocking layer 41 and the second light-blocking layer 42 includes the other main part 402.

[0065] In some embodiments, as shown in Figure 3As shown, the two main body parts 402 include a first main body part 4021 and a second main body part 4022, the first light-blocking layer 41 includes the first main body part 4021, the second light-blocking layer 42 includes the second main body part 4022, and the first main body part 4021 is connected with the light-blocking part 401 to be continuously arranged, that is, the first light-blocking layer 41 includes the light-blocking part 401, and the light-blocking part 401 can be synchronously prepared by using the process of the first light-blocking layer 41, so that the electrical performance of the transistor 101 can be ensured not to be affected by light, and the display effect of the display panel can be improved while saving production cost.

[0066] In this embodiment, by superimposing two layers of light-blocking layers 4 on the driving circuit layer 1, the reflectivity of the front surface of the display panel 100 can be reduced. By covering the light-blocking part 401 on the sidewall of the light-transmitting hole 102, not only the reflectivity of the sidewall of the light-transmitting hole 102 can be reduced, but also the ambient light can be prevented from being irradiated to the transistor 101 through the sidewall of the light-transmitting hole 102 to ensure the electrical stability of the transistor 101, and the film forming process difficulty of the light-transmitting sub-area AA2 can be reduced, and the film number and area of the light-blocking layer of the light-transmitting sub-area AA2 can be reduced to reduce the influence of the light-blocking layer 4 on the transmittance of the display panel, so that the transparent display effect of the display panel can be ensured.

[0067] In some embodiments, the material of the light-blocking layer 4 includes any one of metal and black resist.

[0068] In some embodiments, the materials of the first light-blocking layer 41 and the second light-blocking layer 42 both include metal, and the metal can be any one of molybdenum, nickel, chromium and titanium. It should be noted that molybdenum, nickel, chromium and titanium have good light-blocking effect and low reflectivity, so that the reflectivity of the sidewall of the light-transmitting hole 102 can be reduced.

[0069] In some embodiments, the materials of the first light-blocking layer 41 and the second light-blocking layer 42 can be the same, and the materials of the first light-blocking layer 41 and the second light-blocking layer 42 are both molybdenum.

[0070] In some embodiments, the materials of the first light-blocking layer 41 and the second light-blocking layer 42 both include metal, and at least one of the first light-blocking layer 41 and the second light-blocking layer 42 can be connected to a constant voltage signal, and the constant voltage signal can be a power high potential signal or a power low potential signal, so that the first light-blocking layer 41 and / or the second light-blocking layer 42 with constant potential can be used to shield the interference of external signals, so that the anti-interference ability of the display panel can be improved, and the stability of the display panel can be improved.

[0071] In some embodiments, the first light shielding layer 41 has a thickness greater than the thickness of the second light shielding layer 42, so that the thickness of the light shielding portion 401 on the sidewall of the light transmission hole 102 can be increased while maintaining the overall thickness of the display panel, so as to strengthen the light shielding effect of the light shielding portion 401, thereby further improving the stability of the electrical performance of the transistor 101.

[0072] In some embodiments, the first light shielding layer 41 has a thickness greater than or equal to 400 angstroms and less than or equal to 600 angstroms, and the second light shielding layer 42 has a thickness greater than or equal to 30 angstroms and less than or equal to 120 angstroms. For example, the first light shielding layer 41 can have a thickness of 400 angstroms, 450 angstroms, 500 angstroms, 550 angstroms, or 600 angstroms, and the second light shielding layer 42 can have a thickness of 30 angstroms, 40 angstroms, 50 angstroms, 60 angstroms, 70 angstroms, 80 angstroms, 90 angstroms, 100 angstroms, 110 angstroms, or 120 angstroms.

[0073] In some embodiments, the first light shielding layer 41 and the second light shielding layer 42 are made of different materials, and the material of one of the first light shielding layer 41 and the second light shielding layer 42 includes black resist having an optical density greater than or equal to 3 and less than or equal to 4. For example, the material of the first light shielding layer 41 includes metal, and the material of the second light shielding layer 42 includes black resist having an optical density of 3, 3.2, 3.4, 3.5, 3.7, 3.9, or 4. By stacking the metal light shielding layer and the black resist, the same light shielding effect as stacking two metal light shielding layers can be achieved, and the reflectivity of the sidewall of the light transmission hole 102 can be reduced, thereby ensuring the stability of the electrical performance of the transistor.

[0074] In some embodiments, the display panel 100 further includes at least one inorganic insulating layer 5 disposed on the corresponding light shielding layer 4, and the inorganic insulating layer 5 includes an inorganic insulating sub-portion 501 covering the light shielding portion 401.

[0075] In some embodiments, as Figure 3As shown, the inorganic insulating layer 5 includes a first inorganic insulating layer 51, a second inorganic insulating layer 52, and a third inorganic insulating layer 53. The first inorganic insulating layer 51 is disposed on the first passivation layer 123 and the fourth source-drain electrode layer 124. The first light-blocking layer 41 is disposed on the first inorganic insulating layer 51. The second inorganic insulating layer 52 is disposed on the first inorganic insulating layer 51 and the first light-blocking layer 41. The second light-blocking layer 42 is disposed on the second inorganic insulating layer 52. The third inorganic insulating layer 53 is disposed on the second inorganic insulating layer 52 and the second light-blocking layer 42. The second inorganic insulating layer 52 includes a first inorganic insulating main body portion 521 and an inorganic insulating sub-portion 501. The first inorganic insulating main body portion 521 is disposed on the first inorganic insulating layer 51 and exposes the light-emitting device 2. The first inorganic insulating main body portion 521 and the inorganic insulating sub-portion 501 are connected to each other to be continuously disposed. That is, the inorganic insulating sub-portion 501 belongs to a part of the second inorganic insulating layer 52. The second inorganic insulating layer 52 not only covers the surfaces of the first inorganic insulating layer 51 and the first light-blocking layer 41 away from the driving circuit layer 1, but also extends to the sidewall of the light-transmitting hole 102 and covers the light-blocking portion 401 on the sidewall of the light-transmitting hole 102.

[0076] It should be noted that the covering structure formed by the light-blocking portion 401 and the inorganic insulating sub-portion 501 on the sidewall of the light-transmitting hole 102 can reduce the reflectivity of the sidewall of the light-transmitting hole 102 and prevent ambient light from being irradiated to the transistor through the sidewall of the light-transmitting hole 102, thereby ensuring the stability of the electrical performance of the transistor 101. In addition, the material of the light-blocking portion 401 is metal, and the material of the inorganic insulating sub-portion 501 is inorganic insulating material. Since both metal and inorganic insulating material have good water and oxygen blocking ability, the covering structure formed by the light-blocking portion 401 and the inorganic insulating sub-portion 501 can also prevent water and oxygen from invading into the inside of the display panel through the sidewall of the light-transmitting hole 102, thereby improving the sealing effect of the display panel.

[0077] In some embodiments, the material of the inorganic insulating layer 5 includes any one of silicon nitride, silicon oxide, and silicon oxynitride. Covering the sidewall of the light-transmitting hole 102 and the driving circuit layer 1 with inorganic insulating materials such as silicon nitride, silicon oxide, and silicon oxynitride with high compactness can prevent water vapor from invading into the inside of the display panel through the sidewall of the light-transmitting hole 102, thereby improving the sealing effect of the display panel.

[0078] In some embodiments, the included angle between the sidewall of the light-transmitting hole 102 and the plane where the hole bottom of the light-transmitting hole 102 is located is greater than or equal to 60 degrees and less than or equal to 80 degrees.

[0079] As Figure 4As shown, the opening width of the light-transmitting hole 102 gradually increases from the end closest to the substrate 3 to the end furthest from the substrate 3, thereby increasing the light transmittance of the light-transmitting sub-region AA2. The sidewall of the light-transmitting hole 102 is inclined, and the plane where the bottom of the light-transmitting hole 102 is located is the upper surface of the substrate 3. There is an angle α between the sidewall of the light-transmitting hole 102 and the plane where the bottom of the light-transmitting hole 102 is located. The angle α can be 60 degrees, 65 degrees, 70 degrees, 75 degrees, or 80 degrees, etc. By limiting the angle α between the sidewall of the light-transmitting hole 102 and the plane containing the bottom of the light-transmitting hole 102 to between 60 and 80 degrees, on the one hand, the size of the light-transmitting hole 102 can be reduced while ensuring the transmittance of the light-transmitting sub-region AA2, thereby increasing the pixel density of the display panel. On the other hand, the continuity of the film formation of the light-shielding layer 4 and the inorganic insulating layer 5 on the sidewall of the light-transmitting hole 102 can be ensured, so as to prevent light from shining through the sidewall of the light-transmitting hole 102 onto the active layer of the transistor. It can also prevent water vapor and oxygen in the external environment from intruding into the interior of the display panel through the sidewall of the light-transmitting hole 102.

[0080] Preferably, the angle between the sidewall of the light-transmitting hole 102 and the plane containing the bottom of the light-transmitting hole 102 is greater than or equal to 65 degrees and less than or equal to 75 degrees.

[0081] like Figure 4 The above, Figure 2 The second type of display panel provided for embodiments of this application is along Figure 3 The cross-sectional view along the A-A' direction shown has a structure similar to... Figure 4 The structures of the display panels shown are roughly the same, the difference being that the second main body 4022 and the light-shielding part 401 are connected to each other and continuously arranged, that is, the second light-shielding layer 42 includes the light-shielding part 401. By utilizing the manufacturing process of the second light-shielding layer 42, the light-shielding part 401 can be formed simultaneously, thereby ensuring that the electrical performance of the transistor 101 is not affected by light while saving production costs, and improving the display effect of the display panel.

[0082] like Figure 4 As shown, the display panel includes two inorganic insulator portions 501, namely a first inorganic insulator portion 5011 and a second inorganic insulator portion 5012. The first inorganic insulating body portion 521 is connected to the first inorganic insulator portion 5011 for continuous arrangement. That is, the first inorganic insulator portion 5011 is part of the second inorganic insulating layer 52. The second inorganic insulating layer 52 not only covers the surface of the first inorganic insulating layer 51 and the first light-shielding layer 41 away from the driving circuit layer 1, but also extends to the side wall of the light-transmitting hole 102 and covers the side wall of the light-transmitting hole 102. The light-shielding portion 401 is formed on the surface of the side wall of the first inorganic insulator portion 5011 away from the light-transmitting hole 102.

[0083] likeFigure 4 As shown, the second inorganic insulating main body part 531 and the second inorganic insulating sub part 5012 are connected to each other to be arranged continuously, i.e., the second inorganic insulating sub part 5012 belongs to a part of the third inorganic insulating layer 53, the third inorganic insulating layer 53 not only covers the surfaces of the second inorganic insulating layer 52 and the second light shielding layer 42 away from the driving circuit layer 1, but also extends to the sidewall of the light transmission hole 102 and covers the light shielding part 401 on the sidewall of the light transmission hole 102.

[0084] In Figure 4 In the embodiment shown, the covering structure formed by the first inorganic insulating sub part 5011, the light shielding part 401 and the second inorganic insulating sub part 5012 on the sidewall of the light transmission hole 102 not only can reduce the reflectivity of the sidewall of the light transmission hole 102 and prevent the ambient light from irradiating to the transistor through the sidewall of the light transmission hole 102, so as to ensure the stability of the electrical performance of the transistor 101, but also can prevent the water and oxygen from invading into the inside of the display panel through the sidewall of the light transmission hole 102, so as to improve the sealing effect of the display panel.

[0085] In some embodiments, as Figure 5 As shown, the thickness of the second light shielding layer 42 is greater than the thickness of the first light shielding layer 41, so that the thickness of the light shielding part 401 on the sidewall of the light transmission hole 102 can be increased to strengthen the light shielding effect of the light shielding part 401 while maintaining the overall thickness of the display panel unchanged, so as to further improve the stability of the electrical performance of the transistor 101.

[0086] In some embodiments, the light shielding part 401 completely covers the sidewall of the light transmission hole 102.

[0087] In combination with Figure 6 and Figure 5 As shown, Figure 6 a third display panel provided by an embodiment of the present application, Figure 5 a cross-sectional view of a third display panel provided by an embodiment of the present application along the direction of B-B’ shown, Figure 2 As shown, the structure of the display panel is substantially the same as that shown in Figure 3 and Figure 6 As shown, the light shielding part 401 covers the sidewall around the light transmission hole 102, so as to prevent the light from entering into the display panel through the sidewall around the light transmission hole 102, to further reduce the reflectivity of the sidewall of the light transmission hole 102 and improve the stability of the electrical performance of the transistor 101, so as to further improve the display effect of the display panel.

[0088] In some embodiments, as Figure 6As shown, the light-shielding part 401 is covered with an inorganic insulator part 501. The covering structure formed by the inorganic insulator part 501 and the light-shielding part 401 can not only reduce the reflectivity of the sidewall of the light-transmitting hole 102 and improve the stability of the electrical performance of the transistor 101, but also block water and oxygen, preventing water and oxygen from entering the interior of the display panel through the sidewall of the light-transmitting hole 102, thereby improving the sealing effect of the display panel.

[0089] In some embodiments, such as Figure 5 As shown, the two main body portions 402 include a first main body portion 4021 and a second main body portion 4022. The first light-shielding layer 41 includes the first main body portion 4021, and the second light-shielding layer 42 includes the second main body portion 4022. The first main body portion 4021 located at the edge of the light-transmitting hole 102 is connected to the light-shielding portion 401 on the side wall of the light-transmitting hole 102 for continuous arrangement. That is, the first light-shielding layer 41 includes the light-shielding portion 401. By utilizing the manufacturing process of the first light-shielding layer 41, the light-shielding portion 401 can be prepared and formed simultaneously. This ensures that the electrical performance of the transistor 101 is not affected by light while saving production costs, thereby improving the display effect of the display panel.

[0090] Combination Figure 7 and Figure 7 As shown, Figure 5 The fourth type of display panel provided for embodiments of this application is along Figure 6 The cross-sectional view along the B-B' direction shown has a structure similar to... Figure 7 The structures of the display panels shown are roughly the same, the difference being that the second main body 4022 and the light-shielding part 401 are connected to each other and continuously arranged, that is, the second light-shielding layer 42 includes the light-shielding part 401. By utilizing the manufacturing process of the second light-shielding layer 42, the light-shielding part 401 can be formed simultaneously, thereby ensuring that the electrical performance of the transistor 101 is not affected by light while saving production costs, and improving the display effect of the display panel.

[0091] like Figure 7 As shown, the display panel includes two inorganic insulator portions 501, namely a first inorganic insulator portion 5011 and a second inorganic insulator portion 5012. The first inorganic insulating body portion 521 is connected to the first inorganic insulator portion 5011 for continuous arrangement. That is, the first inorganic insulator portion 5011 is part of the second inorganic insulating layer 52. The second inorganic insulating layer 52 not only covers the surface of the first inorganic insulating layer 51 and the first light-shielding layer 41 away from the driving circuit layer 1, but also extends to the side wall of the light-transmitting hole 102 and covers the side wall of the light-transmitting hole 102. The light-shielding portion 401 is formed on the surface of the side wall of the first inorganic insulator portion 5011 away from the light-transmitting hole 102.

[0092] like Figure 7As shown, the second inorganic insulating main body 531 and the second inorganic insulator 5012 are connected to each other to be continuously arranged. That is, the second inorganic insulator 5012 is part of the third inorganic insulating layer 53. The third inorganic insulating layer 53 not only covers the surface of the second inorganic insulating layer 52 and the second light-shielding layer 42 away from the driving circuit layer 1, but also extends to the side wall of the light-transmitting hole 102 and covers the light-shielding part 401 located on the side wall of the light-transmitting hole 102.

[0093] exist Figure 5 In the illustrated embodiment, the covering structure formed by the first inorganic insulator portion 5011, the light-shielding portion 401, and the second inorganic insulator portion 5012 on the sidewall of the light-transmitting hole 102 can not only reduce the reflectivity of the sidewall of the light-transmitting hole 102 and prevent ambient light from shining on the transistor through the sidewall of the light-transmitting hole 102, thereby ensuring the stability of the electrical performance of the transistor 101, but also prevent water and oxygen from intruding into the interior of the display panel through the sidewall of the light-transmitting hole 102, thereby improving the sealing effect of the display panel.

[0094] Combination Figure 8 and Figure 8 As shown, Figure 5 The fifth type of display panel provided for embodiments of this application is along Figure 6 The cross-sectional view along the B-B' direction shown has a structure similar to... Figure 7 and Figure 8 The structures of the display panels shown are roughly the same, the difference being that: the two light-shielding layers 4 have two main bodies and two light-shielding parts, the first light-shielding layer 41 includes one main body and one light-shielding part, the one main body and one light-shielding part are continuously arranged, and the second light-shielding layer 42 includes another main body and another light-shielding part, the other main body and another light-shielding part are continuously arranged.

[0095] like Figure 8 As shown, the two main body portions 402 are a first main body portion 4021 and a second main body portion 4022, and the two light-shielding portions 401 are a first light-shielding portion 4011 and a second light-shielding portion 4012. The first light-shielding layer 41 includes a first main body portion 4021 and a first light-shielding portion 4011. The first main body portion 4021 located at the edge of the light-transmitting hole 102 is continuously connected to the first light-shielding portion 4011 on the side wall of the light-transmitting hole 102. The second light-shielding layer 42 includes a second main body portion 4022 and a second light-shielding portion 4012. The second main body portion 4022 located at the edge of the light-transmitting hole 102 is continuously connected to the second light-shielding portion 4012 on the side wall of the light-transmitting hole 102.

[0096] like Figure 8As shown, the display panel includes two inorganic insulator portions 501, namely a first inorganic insulator portion 5011 and a second inorganic insulator portion 5012. The first inorganic insulating body portion 521 is connected to the first inorganic insulator portion 5011 for continuous arrangement. That is, the first inorganic insulator portion 5011 is part of the second inorganic insulating layer 52. The second inorganic insulating layer 52 not only covers the surface of the first inorganic insulating layer 51 and the first light-shielding layer 41 away from the driving circuit layer 1, but also extends to the side wall of the light-transmitting hole 102 and covers the first light-shielding portion 4011 on the side wall of the light-transmitting hole 102. The second light-shielding portion 4012 is formed on the surface of the side wall of the first inorganic insulator portion 5011 away from the light-transmitting hole 102.

[0097] like Figure 8 As shown, the second inorganic insulating main body 531 and the second inorganic insulator 5012 are connected to each other to be continuously arranged. That is, the second inorganic insulator 5012 is part of the third inorganic insulating layer 53. The third inorganic insulating layer 53 not only covers the surface of the second inorganic insulating layer 52 and the second light-shielding layer 42 away from the driving circuit layer 1, but also extends to the side wall of the light-transmitting hole 102 and covers the second light-shielding part 4012 located on the side wall of the light-transmitting hole 102.

[0098] exist Figure 8 In the illustrated embodiment, the covering structure formed by the first light-shielding part 4011, the first inorganic insulator part 5011, the second light-shielding part 4012, and the second inorganic insulator part 5012 on the sidewall of the light-transmitting hole 102 can not only reduce the reflectivity of the sidewall of the light-transmitting hole 102 and prevent ambient light from shining on the transistor through the sidewall of the light-transmitting hole 102, thereby ensuring the stability of the electrical performance of the transistor 101, but also prevent water and oxygen from intruding into the interior of the display panel through the sidewall of the light-transmitting hole 102, thereby improving the sealing effect of the display panel.

[0099] In some embodiments, such as Figure 8As shown, the display panel further comprises an encapsulation layer 6 covering the light-emitting device 2, the encapsulation layer 6 is provided with an encapsulation light-transmitting hole 61 penetrating through the encapsulation layer 6 in the thickness direction of the display panel, the encapsulation light-transmitting hole 61 is opposite to and communicates with the light-transmitting hole 102 to allow light to pass through the encapsulation light-transmitting hole 61 and the light-transmitting hole 102. By forming the encapsulation light-transmitting hole 61 in the portion of the encapsulation layer 6 corresponding to the light-transmitting sub-area AA2, the influence of the encapsulation layer 6 on the transmittance of the light-transmitting sub-area AA2 can be reduced. The sidewall of the light-transmitting hole 102 is covered with the laminated covering structure formed by the light-blocking part 401 and the inorganic insulating sub-part 501, which has good water and oxygen blocking ability, can prevent water vapor and oxygen in the external environment from invading into the inside of the display panel through the sidewall of the light-transmitting hole 102, so as to reduce the reflectivity of the sidewall of the light-transmitting hole 102 while ensuring the encapsulation effect of the display panel and the transmittance of the light-transmitting sub-area AA2, and prevent ambient light from being irradiated to the transistor through the sidewall of the light-transmitting hole 102, thereby ensuring the stability of the electrical performance of the transistor 101 and improving the display effect of the display panel.

[0100] In some embodiments, as Figure 8 As shown, the orthographic projection of the first main part 4021 and the second main part 4022 on the substrate 3 completely overlaps, the orthographic projection of the first light-blocking part 4011 and the second light-blocking part 4012 on the substrate 3 completely overlaps, that is, the orthographic projection of the first light-blocking layer 41 and the second light-blocking layer 42 on the substrate 3 completely overlaps, the pattern of the first light-blocking layer 41 is consistent with the pattern of the second light-blocking layer 42, and the first light-blocking layer 41 and the second light-blocking layer 42 can share one photomask, thereby saving one photomask and reducing the production cost of the display panel.

[0101] According to the display panel provided by the above-mentioned embodiments of the present application, the embodiments of the present application further provide a display panel manufacturing method, which is used to manufacture the display panel provided by any one of the above-mentioned embodiments, and in combination with Figure 9 As shown, the display panel manufacturing method comprises:

[0102] In step S1, a buffer layer 110 is formed on the substrate 3, and a layer of semiconductor material is formed on the buffer layer 110; the semiconductor material is patterned by using a first photomask to obtain an active layer 111;

[0103] In step S2, a first gate insulating layer 112 is formed on the active layer 111, and a layer of conductive material is formed on the first gate insulating layer 112; the conductive material is patterned by using a second photomask to obtain a first gate layer 113;

[0104] Step S3, forming a second gate insulating layer 114 on the first gate layer 113, and forming a layer of conductive material on the second gate insulating layer 114; using a third mask to pattern the conductive material to obtain a second gate layer 115;

[0105] Step S4, forming a first interlayer dielectric layer 116 on the second gate layer 115, and using a fourth mask to pattern the first interlayer dielectric layer 116 to form a first lap joint hole;

[0106] Step S5, using a fifth mask to pattern the first interlayer dielectric layer 116 to form a first sub-transmission hole, the first sub-transmission hole penetrating through the first interlayer dielectric layer 116, the second gate insulating layer 114, the first gate insulating layer 112 and the buffer layer 110;

[0107] Step S6, forming a layer of conductive material on the first interlayer dielectric layer 116, and using a sixth mask to pattern the conductive material to form a first source-drain layer 117, the first source-drain layer 117 being lapped with the active layer 111 through the first lap joint hole;

[0108] Step S7, forming a first planar layer 118 on the first source-drain layer 117, and using a seventh mask to expose the first planar layer 118 to form a second lap joint hole;

[0109] Step S8, forming a layer of conductive material on the first planar layer 118, and using an eighth mask to pattern the conductive material to form a second source-drain layer 119, the second source-drain layer 119 being lapped with the first source-drain layer 117 through the second lap joint hole;

[0110] Step S9, forming a second planar layer 120 on the second source-drain layer 119, and using a ninth mask to expose the second planar layer 120 to form a third lap joint hole;

[0111] Step S10, forming a layer of conductive material on the second planar layer 120, and using a tenth mask to pattern the conductive material to form a third source-drain layer 121, the third source-drain layer 121 being lapped with the second source-drain layer 119 through the third lap joint hole;

[0112] Step S11, forming a third planar layer 122 on the second source-drain layer 119, and using an eleventh mask to expose the third planar layer 122 to form a fourth lap joint hole;

[0113] Step S12, forming a first passivation layer 123 on the third planar layer 122, and using a twelfth mask to pattern the first passivation layer 123 to form a fifth lap joint hole;

[0114] Step S13, a layer of conductive material is formed on the first passivation layer 123, the conductive material is patterned by using the thirteenth photomask to obtain a fourth source-drain layer 124, the fourth source-drain layer 124 is connected to the third source-drain layer 121 through the lap joint hole and the fourth lap joint hole in sequence;

[0115] Step S14, a first inorganic insulating layer 51 is formed on the fourth source-drain layer 124, the first inorganic insulating layer 51 is patterned by using the fourteenth photomask to expose part of the fourth source-drain layer 124, and a second light-transmitting sub-hole is formed in the light-transmitting sub-area AA2, the second light-transmitting sub-hole is opposite to the first light-transmitting sub-hole;

[0116] Step S15, the third planar layer 122 exposed by the second light-transmitting sub-hole and the second planar layer 120 and the first planar layer 118 located below the third planar layer 122 are exposed by using the fifteenth photomask to form a light-transmitting hole 102, the light-transmitting hole 102 penetrates the first inorganic insulating layer 51, the first passivation layer 123, the third planar layer 122, the second planar layer 120, the first planar layer 118, the first interlayer dielectric layer 116, the second gate insulating layer 114, the first gate insulating layer 112 and the buffer layer 110 in the thickness direction of the display panel in sequence;

[0117] Step S16, a layer of light-blocking material is formed on the first inorganic insulating layer 51, the light-blocking material is patterned by using the sixteenth photomask to obtain a first light-blocking layer 41;

[0118] Step S17, a second inorganic insulating layer 52 is formed on the first light-blocking layer 41, a layer of light-blocking material is formed on the second inorganic insulating layer 52, the light-blocking material is patterned by using the sixteenth photomask to obtain a second light-blocking layer 42;

[0119] Step S18, a third inorganic insulating layer 53 is formed on the second light-blocking layer 42, the third inorganic insulating layer 53 is patterned by using the seventeenth photomask to expose the fourth source-drain layer 124 and the light-transmitting hole 102.

[0120] Step S19, the light-emitting device 2 is bound to the fourth source-drain layer 124;

[0121] Step S20, a packaging material is formed on the light-emitting device 2, the packaging material is exposed to form a packaging layer 6 and a packaging light-transmitting hole 61 opposite to the light-transmitting hole 102.

[0122] According to the display panel provided in the above embodiments of the present application, the embodiments of the present application further provide a display device, please refer to Figure 9 , ​A schematic diagram of a display device provided by the embodiments of the present application is shown in FIG. 1, which includes a display panel 100 and a housing 200, and the display panel 100 is arranged on the housing 200. The display panel 100 can be any one of the display panels provided by the above embodiments. The display device provided by the embodiments of the present application can achieve the same technical effects as the display panel provided by any one of the above embodiments, which will not be described herein.

[0123] The display panel provided by the embodiments of the present application includes a display area, the display area includes a plurality of light-emitting sub-areas and a plurality of light-transmitting sub-areas, each light-transmitting sub-area is arranged on at least one side of the corresponding light-emitting sub-area, the display panel includes a driving circuit layer, a light-emitting device and at least one light-shielding layer, the driving circuit layer includes a transistor located in the light-emitting sub-area and is provided with a light-transmitting hole located in the light-transmitting sub-area, the light-emitting device is located in the light-emitting sub-area, the light-emitting device is arranged on the driving circuit layer and is electrically connected to the corresponding transistor, the light-shielding layer has at least one light-shielding part, by covering the light-shielding part on at least part of the sidewall of the light-transmitting hole, the light-shielding part is used to shield the light irradiating to the sidewall of the light-transmitting hole, so as to prevent the light from irradiating to the transistor through the sidewall of the light-transmitting hole, thus the electrical performance of the transistor can be ensured not to be affected by the light, so that the display effect of the display panel can be improved.

[0124] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0125] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0126] The embodiments, implementation manners and related technical features of the present application can be combined or replaced with each other without conflict.

[0127] The above is only the preferred embodiments of the present application, and does not limit the present application in any form, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the technical solution of the present application, still belongs to the scope of the technical solution of the present application.

Claims

1. A display panel, characterized by, The display panel comprises a display area, the display area comprises a plurality of light-emitting sub-areas and a plurality of light-transmitting sub-areas, each light-transmitting sub-area is arranged on at least one side of the corresponding light-emitting sub-area, and the display panel comprises: a driving circuit layer comprising transistors arranged in the light-emitting sub-areas and light-transmitting holes arranged in the light-transmitting sub-areas; a light-emitting device arranged in the light-emitting sub-area, arranged on the driving circuit layer and electrically connected to the corresponding transistor; and at least one light-shielding layer having at least one light-shielding part; wherein the light-shielding part covers at least part of the sidewall of the light-transmitting hole.

2. The display panel of claim 1, wherein, The light-shielding part covers part of the sidewall of the light-transmitting hole close to the light-emitting sub-area.

3. The display panel of claim 2, wherein, The light-shielding part completely covers the sidewall of the light-transmitting hole.

4. The display panel of claim 1, wherein, At least one of the light-shielding layers further has at least one main part, the main part is arranged on the driving circuit layer and exposes the light-emitting device.

5. The display panel of claim 4, wherein, The display panel comprises two light-shielding layers, and the two light-shielding layers comprise: a first light-shielding layer arranged on the driving circuit layer; a second light-shielding layer arranged on the first light-shielding layer; wherein the first light-shielding layer comprises one main part and one light-shielding part, the main part and the light-shielding part are arranged continuously, and the second light-shielding layer comprises another main part; or, the first light-shielding layer comprises one main part, and the second light-shielding layer comprises another main part and another light-shielding part, and the other main part and the other light-shielding part are arranged continuously; or, the first light-shielding layer comprises one main part and one light-shielding part, the main part and the light-shielding part are arranged continuously, the second light-shielding layer comprises another main part and another light-shielding part, and the other main part and the other light-shielding part are arranged continuously.

6. The display panel of claim 5, wherein, The materials of the first light-shielding layer and the second light-shielding layer both comprise metal, the thickness of the first light-shielding layer is greater than or equal to 400 angstrom and less than or equal to 600 angstrom, and the thickness of the second light-shielding layer is greater than or equal to 30 angstrom and less than or equal to 120 angstrom; or, the material of one of the first light-shielding layer and the second light-shielding layer comprises black resist, and the optical density of the black resist is greater than or equal to 3 and less than or equal to 4.

7. The display panel according to any one of claims 1 to 6, wherein The display panel further comprises at least one inorganic insulating layer, the inorganic insulating layer is arranged on the corresponding light-shielding layer and comprises an inorganic insulating part; wherein the inorganic insulating part covers the light-shielding part.

8. The display panel according to any one of claims 1 to 6, wherein, The angle between the sidewall of the light-transmitting hole and the plane where the bottom of the light-transmitting hole is located is greater than or equal to 60 degrees and less than or equal to 80 degrees.

9. The display panel according to any one of claims 1 to 6, wherein, The display panel further comprises an encapsulation layer covering the light-emitting device; wherein the encapsulation layer is provided with an encapsulation light-transmitting hole, the encapsulation light-transmitting hole is opposite to and communicates with the light-transmitting hole to allow light to pass through the encapsulation light-transmitting hole and the light-transmitting hole.

10. The display panel of claim 9, wherein, The distance between the bottom of the hole wall of the encapsulation light-transmitting hole and the bottom of the hole wall of the light-transmitting hole in the radial direction is greater than or equal to 1 micrometer and less than or equal to 2 micrometers.

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