A display panel and a display device

Abstract

An embodiment of the present application provides a display panel and a display device. The display panel includes a main display area and a light-transmissive display area, and the main display area surrounds at least part of the light-transmissive display area. The display panel includes a first common electrode, a second common electrode, and at least one first support member; the first common electrode is disposed in the light-transmissive display area and includes a plurality of hollow portions, the second common electrode is disposed in the main display area; the first support member is disposed in the light-transmissive display area. The light-transmissive display area includes a first area and a second area, and the second area is located on a side of the first area close to the main display area; the sum of the projected areas of the first support members disposed per unit area in the second area is greater than the sum of the projected areas of the first support members disposed per unit area in the first area. When using two mask plates to prepare a patterned cathode, the mask plates can be well supported by the first support members, avoiding the mask plates from scratching the functional film layer of the display panel, and effectively improving the finished product yield of the display panel.

Description

Technical Field

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

Background Art

[0002] With the increasing demand of consumers for displays, full-screen display has become the focus of current research. In the prior art, an important technology for realizing a full screen is to integrate functions such as cameras, infrared sensors, and face recognition under the display screen, and these functions put forward higher requirements for the transmittance of the display screen.

[0003] During the preparation process of an Organic Light-Emitting Diode (OLED) display panel, the common electrode of the OLED device usually includes a metal material, which has a great influence on the light transmittance of the display screen.

[0004]

Content of the Application

[0005] In view of this, embodiments of the present application provide a display panel and a display device to solve the above problems.

[0006] In a first aspect, an embodiment of the present application provides a display panel, including a main display area and a light-transmissive display area, the main display area surrounding at least part of the light-transmissive display area; the display panel includes a first common electrode, a second common electrode, and at least one first support member, the first common electrode is disposed in the light-transmissive display area, wherein the first common electrode includes a plurality of hollow portions; the second common electrode is disposed in the main display area, and the second common electrode is disposed over the entire surface of the main display area; the first support member is disposed in the light-transmissive display area. Wherein, the light-transmissive display area includes a first area and a second area, the second area surrounds at least part of the first area, and the second area is located on a side of the first area close to the main display area; along the thickness direction of the display panel, the sum of the projected areas of the first support members disposed per unit area in the second area is greater than the sum of the projected areas of the first support members disposed per unit area in the first area.

[0007] In one implementation manner of the first aspect, the second area includes a first support member, and the first support member surrounds at least part of the first area.

[0008] In one implementation manner of the first aspect, the second area includes at least two first support members, and the at least two first support members surround at least part of the first area.

[0009] In one implementation manner of the first aspect, along the thickness direction of the display panel, the center line or the center connection line of the projection of the first support member in the second area is in a broken line shape.

[0010] In an implementation of the first aspect, the main display area includes a plurality of second sub-pixels, and the light-transmissive display area includes a plurality of first sub-pixels; along the direction from the main display area to the second area, the first support member located in the second area is located between adjacent first sub-pixels and second sub-pixels.

[0011] In an implementation of the first aspect, along the thickness direction of the display panel, the minimum distance between the orthographic projection of the first support member located in the second area on a plane parallel to the display panel and the orthographic projection of the adjacent first sub-pixel on a plane parallel to the display panel is D1, and D1≥3μm; the minimum distance between the orthographic projection of the first support member located in the second area on a plane parallel to the display panel and the orthographic projection of the adjacent second sub-pixel on a plane parallel to the display panel is D2, and D2≥3μm.

[0012] In an implementation of the first aspect, D1 = D2.

[0013] In an implementation of the first aspect, among the plurality of hollow portions, there is a first hollow portion located in the second area, and along the direction perpendicular to the plane where the display panel is located, the first hollow portion at least partially covers the first support member.

[0014] In an implementation of the first aspect, the first common electrode includes a portion located in the second area, and at least a portion of the first common electrode located in the second area covers the first support member.

[0015] In an implementation of the first aspect, along the thickness direction of the display panel, at least a portion of the first support member is not completely covered by the first common electrode.

[0016] In a second aspect, an embodiment of the present application provides a display panel, including a main display area and a light-transmissive display area, the main display area surrounding at least a portion of the light-transmissive display area; the light-transmissive display area includes a plurality of first support members and a plurality of first sub-pixels, and at least a portion of the first sub-pixels are located at the edge of the light-transmissive display area close to the main display area; the main display area includes a plurality of second sub-pixels, and at least a portion of the second sub-pixels are located at the edge of the main display area close to the light-transmissive display area. Among them, a first support member is provided between at least some adjacent first sub-pixels and second sub-pixels.

[0017] In an implementation of the second aspect, among at least some of the first sub-pixels, a first support member is provided between adjacent first sub-pixels.

[0018] In an implementation of the second aspect, along the thickness direction of the display panel, the minimum distance between the orthographic projection of the first support member on a plane parallel to the display panel and the orthographic projection of the adjacent first sub-pixel on a plane parallel to the display panel is D, where D≥3μm.

[0019] In a third aspect, an embodiment of the present application provides a display device, which includes the display panel and the optical functional element provided in any of the above aspects; the optical functional element is disposed at a position corresponding to the transmissive display area of the display device.

[0020] In one implementation of the third aspect, the optical functional element is at least one of an optical fingerprint sensor, an iris recognition sensor, a camera, and a flashlight.

[0021] In the present application, patterning the first common electrode in the transmissive display area can improve the light transmittance of the transmissive display area. The manufacturing processes of the first common electrode and the second common electrode may both be evaporation processes, and patterning of the first common electrode and the second common electrode usually needs to be completed by combining two mask plates.

[0022] In one manufacturing method of the common electrode, the first mask plate is used to manufacture the second common electrode and the first part of the first common electrode. The first mask plate includes an occlusion part and a hollow part. When the evaporation material is deposited in the hollow part of the first mask plate, the second common electrode and the first part of the first common electrode are formed. That is, in the manufacturing process of the second common electrode and the first part of the first common electrode, the hollow part of the first mask plate corresponds to the area where the second common electrode and the first part of the first common electrode are located, and the occlusion part corresponds to the area where the second common electrode and the first part of the first common electrode are not provided. In the manufacturing process of the display panel, when the first mask plate is used to manufacture the second common electrode and the first part of the first common electrode, the first support member is used to support the occlusion part of the first mask plate, and the support area of the first support member in the second area is relatively large, which can effectively prevent the edge of the occlusion part of the first mask plate from contacting the film layer already manufactured in the transmissive display area, thereby preventing the first mask plate from scratching the functional film layer of the transmissive display area.

[0023] The second mask plate is used to manufacture the second part of the first common electrode. The second mask plate includes an occlusion part and a hollow part. When the evaporation material is deposited in the hollow part of the second mask plate, the second part of the first common electrode is formed. That is, in the manufacturing process of the second part of the first common electrode, the hollow part of the second mask plate corresponds to the area where the second part of the first common electrode is located, and the occlusion part corresponds to the area where the second part of the first common electrode is not provided. In the manufacturing process of the display panel, when the second mask plate is used to manufacture the second part of the first common electrode, the first support member is used to support the occlusion part of the second mask plate, and the support area of the first support member in the second area is relatively large, which can also effectively prevent the second mask plate from contacting the film layer already manufactured in the display panel, thereby preventing the second mask plate from scratching the functional film layer of the display panel.

[0024] Since the sum of the projected areas of the first support members per unit area in the second region is greater than the sum of the projected areas of the first support members per unit area in the first region, that is, the support area of the first support members in the second region is larger. Even if there is a misalignment between the mask plate and the display panel, the mask plate can be well supported by the first support members in the second region, preventing the mask plate from scratching the functional film layer of the display panel. In particular, the edge of the shielding portion of the first mask plate can be effectively supported by the first support members in the second region, avoiding the first mask plate from scratching the functional film layer in the light-transmitting display region. This effectively improves the yield rate of the display panel.

Description of the Drawings

[0025] To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 Schematic diagram of a display panel provided by an embodiment of the present application;

[0027] Figure 2 For Figure 1 Enlarged view of area BB;

[0028] Figure 3 Schematic diagram of a first mask plate provided by an embodiment of the present application;

[0029] Figure 4 Schematic diagram of a second mask plate provided by an embodiment of the present application;

[0030] Figure 5 Schematic diagram of a method for preparing a common electrode related to the present application;

[0031] Figure 6 Schematic diagram of another first mask plate provided by an embodiment of the present application;

[0032] Figure 7 Schematic diagram of another second mask plate provided by an embodiment of the present application;

[0033] Figure 8 Schematic diagram of another method for preparing a common electrode related to the present application

[0034] Figure 9 Schematic diagram of a light-transmitting display region related to the present application;

[0035] Figure 10 Schematic diagram of another light-transmitting display region related to the present application;

[0036] Figure 11 Another schematic diagram of a light-transmitting display area related to this application;

[0037] Figure 12 A partial schematic diagram of a display panel related to this application;

[0038] Figure 13 For Figure 12 The cross-sectional view along the tangent line A-A' in

[0039] Figure 14 A schematic diagram of the projected positions of a first support member and sub-pixels related to this application;

[0040] Figure 15 Another partial schematic diagram of a display panel related to this application;

[0041] Figure 16 For Figure 15 The cross-sectional view along the tangent line A-A' in

[0042] Figure 17 A schematic diagram of the projected positions of a first common electrode and a first support member related to this application;

[0043] Figure 18 Another schematic diagram of a light-transmitting display area related to this application;

[0044] Figure 19 Another schematic diagram of a display panel provided by an embodiment of this application;

[0045] Figure 20 Another schematic diagram of a display panel provided by an embodiment of this application;

[0046] Figure 21 A partial schematic diagram of a display panel related to this application;

[0047] Figure 22 A projection schematic diagram of a first support member and a first sub-pixel related to this application;

[0048] Figure 23 A schematic diagram of a display device provided by an embodiment of this application.

Detailed implementation manners

[0049] To better understand the technical solutions of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0050] It should be clear that the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts belong to the scope of protection of this application.

[0051] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "the" and "said" used in the embodiments of the present application and the appended claims are also intended to include the plural forms unless the context clearly dictates otherwise.

[0052] It should be understood that the term "and / or" used herein is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0053] In the description of this specification, it should be understood that the words "substantially", "approximately", "about", "around", "roughly", "generally" and the like described in the claims and embodiments of the present application refer to values that can be generally recognized within a reasonable process operation range or tolerance range, rather than an exact value.

[0054] It should be understood that although the terms first, second, etc. may be used in the embodiments of the present application to describe electrodes, regions, etc., these electrodes, regions, etc. should not be limited to these terms. These terms are only used to distinguish the electrodes, regions, etc. from each other. For example, without departing from the scope of the embodiments of the present application, the first common electrode may also be referred to as the second common electrode, and similarly, the second common electrode may also be referred to as the first common electrode.

[0055] Figure 1 A schematic diagram of a display panel provided for the embodiments of the present application, Figure 2 is Figure 1 an enlarged view of the BB region in

[0056] The inventor analyzed the problem that the common electrode of the light-emitting device affects the light transmittance of the display panel and found that patterning the common cathode of the light-emitting device can well improve the screen transmittance. The cathode patterning can be prepared by an evaporation process. When using the evaporation process to prepare the patterned cathode, generally two mask plates are required to achieve it. To save manufacturing costs, a combination of a conventional metal mask (CMM) and a fine metal mask (FMM) is usually used to prepare the patterned cathode. However, the CMM has a low cost, but due to the use of a single-sided etching process, when preparing the patterned cathode, the edge of the shielding part of the CMM is very likely to scratch the functional film layer of the display panel, reducing the finished product yield of the OLED display panel.

[0057] Please combine Figure 1 and Figure 2, an embodiment of the present application provides a display panel 01, including a main display area AA and a transmissive display area BB, and the main display area AA surrounds at least part of the transmissive display area BB. That is to say, the transmissive display area BB can be entirely surrounded by the main display area AA, or as Figure 1 shown, part of the transmissive display area BB is surrounded by the main display area AA. The display panel 01 includes a first common electrode 11, a second common electrode 21, and at least one first support member 12. The first common electrode 11 is disposed in the transmissive display area BB, and the first common electrode 11 includes a plurality of hollow portions 110. In this embodiment, the first common electrode 11 and the second common electrode 21 can be the cathode disposed in the transmissive display area BB and the cathode disposed in the main display area AA, respectively.

[0058] It can be understood that the setting of the hollow portions 110 makes the cathode of the transmissive display area BB present a patterned structure, which can improve the light transmittance of the transmissive display area BB. The second common electrode 21 is disposed in the main display area AA, and the second common electrode 21 is disposed across the entire surface of the main display area AA. The first support member 12 is disposed in the transmissive display area BB. The transmissive display area BB includes a first area B1 and a second area B2. The second area B2 surrounds at least part of the first area B1, and the second area B2 is located on the side of the first area B1 close to the main display area AA. It should be noted that the first area B1 can be entirely surrounded by the second area B2 or partially surrounded by the second area B2.

[0059] Among them, along the thickness direction of the display panel 01, the sum of the projected areas of the first support members 12 per unit area in the second area B2 is greater than the sum of the projected areas of the first support members 12 per unit area in the first area B1. For example, the sum of the projected areas of the first support members 12 per square millimeter in the second area B2 is greater than the sum of the projected areas of the first support members 12 per square millimeter in the first area B1. It should be noted that along the thickness direction of the display panel 01, when the projected area of a single first support member 13 in the second area B2 is the same as the projected area of a single first support member 13 in the first area B1, the sum of the projected areas of the first support members 12 per unit area in the second area B2 is greater than the sum of the projected areas of the first support members 12 per unit area in the first area B1, which means that the density of the first support members 12 in the second area B2 is greater than the density of the first support members 12 in the first area B1. Or, taking the area size where one or two minimum pixel repeating units are located as the unit area, the sum of the projected areas of the first support members 12 per unit area in the second area B2 is greater than the sum of the projected areas of the first support members 12 per unit area in the first area B1.

[0060] In this application, it can be understood that the preparation processes of the first common electrode 11 and the second common electrode 21 are both evaporation processes. In the area where non-emitting pixels are located, when ambient light passes through this area, the presence of the common electrode will reduce the light transmittance of the area where non-emitting pixels are located, resulting in the loss of a part of the ambient light. Reducing the common electrode in the area where non-emitting pixels are located can increase the light transmittance of the area where non-emitting pixels are located. That is to say, by performing a patterning design on the common electrode of the transmissive display area BB, the light transmittance of the transmissive display area BB can be increased. When using the evaporation process to prepare a patterned common electrode, generally two mask plates need to be combined to achieve it. To save manufacturing costs, the common metal mask (CMM) and the fine metal mask (FMM) are usually used in combination to prepare the patterned cathode. Since the CMM is usually used to prepare a large-area common electrode, the hollowed-out part of the CMM is relatively large. And the CMM with a relatively large hollowed-out part is generally prepared by a single-sided etching method, which has a low cost. However, this results in more burrs and the like at the edge of the shielding part in the CMM. Then, the shielding part around the hollowed-out part is more likely to scratch the functional film layer of the display panel, especially the shielding part in the transmissive display area BB affects the yield and display effect of the display panel 01 by scratching the functional film layer of the display panel 01.

[0061] In this application, the first support member 12 is used to support the CMM and the FMM, avoiding the CMM and the FMM from scratching the functional film layer that has been prepared in the display panel 01. In particular, it can effectively support the edge of the shielding part of the CMM, avoiding the edge of the shielding part of the CMM from scratching the functional film layer that has been prepared.

[0062] Figure 3 Schematic diagram of a first mask plate provided by an embodiment of this application Figure 4 Schematic diagram of a second mask plate provided by an embodiment of this application; Figure 5 Schematic diagram of a method for preparing a common electrode related to this application; Figure 6 Schematic diagram of another first mask plate provided by an embodiment of this application Figure 7 Schematic diagram of another second mask plate provided by an embodiment of this application; Figure 8 Schematic diagram of another method for preparing a common electrode related to this application.

[0063] In this application, there are various methods for using the CMM and the FMM to prepare a patterned common electrode. For the convenience of description, the CMM is called the first mask plate M1, and the FMM is called the second mask plate M2.

[0064] Exemplarily, as Figure 5 shown, the first preparation method is: using the first mask plate M1 to prepare the second common electrode 21, and using the second mask plate M2 to prepare the first common electrode 11.

[0065] Please combine Figure 3 、 Figure 4 and Figure 5 , the preparation of the second common electrode 21 requires a first mask plate M1. The first mask plate M1 includes a shielding portion M11 and a hollow portion M12. When the evaporation material is deposited in the hollow portion M12 of the first mask plate M1, the second common electrode 21 is formed. That is, during the preparation process of the second common electrode 21, the hollow portion M12 of the first mask plate M1 corresponds to the region where the second common electrode 21 is located, and the shielding portion M11 corresponds to the region where the second common electrode 21 is not provided. During the preparation process of the display panel 01, when using the first mask plate M1 to prepare the second common electrode 21, the first support member 12 is used to support the shielding portion M11 of the first mask plate M1, and the support area of the first support member 12 in the second region B2 is relatively large, which can effectively prevent the edge of the shielding portion M11 of the first mask plate M1 from contacting the film layer already prepared in the light-transmitting display region BB, thereby preventing the first mask plate M1 from scratching the functional film layer of the light-transmitting display region BB.

[0066] The preparation of the first common electrode 11 requires a second mask plate M2. The second mask plate M2 includes a shielding portion M21 and a hollow portion M22. When the evaporation material is deposited in the hollow portion M22 of the second mask plate M2, the first common electrode 11 is formed. That is, during the preparation process of the first common electrode 11, the hollow portion M22 of the second mask plate M2 corresponds to the region where the first common electrode 11 is located, and the shielding portion M21 corresponds to the region where the first common electrode 11 is not provided. During the preparation process of the display panel 01, when using the second mask plate M2 to prepare the first common electrode 11, the first support member 12 is used to support the shielding portion of the second mask plate M2, and the support area of the first support member 12 in the second region B2 is relatively large, which can also effectively prevent the second mask plate M2 from contacting the film layer already prepared in the display panel 01, thereby preventing the second mask plate M2 from scratching the functional film layer of the display panel 01.

[0067] As Figure 8 shown, the second preparation method is: using the first mask plate M1 to prepare the second common electrode 21 and the first part 11A of the first common electrode 11, and using the second mask plate M2 to prepare the second part 11B of the first common electrode 11. In both preparation methods, the first support member 12 effectively supports the first mask plate M1 and the second mask plate M2, preventing the mask plates from scratching the already prepared functional film layer.

[0068] Please combine Figure 6 、 Figure 7 and Figure 8, the preparation of the second common electrode 21 and the first part 11A of the first common electrode 11 requires a first mask plate M1. The first mask plate M1 includes a shielding portion M11 and a hollow portion M12. When the evaporation material is deposited in the hollow portion M12 of the first mask plate M1, the second common electrode 21 and the first part 11A of the first common electrode 11 are formed. That is, during the preparation process of the second common electrode 21 and the first part 11A of the first common electrode 11, the hollow portion M12 of the first mask plate M1 corresponds to the regions where the second common electrode 21 and the first part 11A of the first common electrode 11 are located, and the shielding portion M11 corresponds to the regions where the second common electrode 21 and the first part 11A of the first common electrode 11 are not provided. During the preparation process of the display panel 01, when using the first mask plate M1 to prepare the second common electrode 21 and the first part 11A of the first common electrode 11, the first support member 12 is used to support the shielding portion M11 of the first mask plate M1. And the support area of the first support member 12 in the second region B2 is relatively large, which can effectively prevent the edge of the shielding portion M11 of the first mask plate M1 from contacting the film layer already prepared in the light-transmitting display region BB, thereby preventing the first mask plate M1 from scratching the functional film layer of the light-transmitting display region BB.

[0069] The preparation of the second part 11B of the first common electrode 11 requires a second mask plate M2. The second mask plate M2 includes a shielding portion M21 and a hollow portion M22. When the evaporation material is deposited in the hollow portion M22 of the second mask plate M2, the second part 11B of the first common electrode 11 is formed. That is, during the preparation process of the second part 11B of the first common electrode 11, the hollow portion M22 of the second mask plate M2 corresponds to the region where the second part 11B of the first common electrode 11 is located, and the shielding portion M21 corresponds to the region where the second part 11B of the first common electrode 11 is not provided. During the preparation process of the display panel 01, when using the second mask plate M2 to prepare the second part 11B of the first common electrode 11, the first support member 12 is used to support the shielding portion of the second mask plate M2. And the support area of the first support member 12 in the second region B2 is relatively large, which can also effectively prevent the second mask plate M2 from contacting the film layer already prepared in the display panel 01, thereby preventing the second mask plate M2 from scratching the functional film layer of the display panel 01.

[0070] Along the thickness direction of the display panel 01, since the sum of the projected areas of the first support members 12 per unit area in the second region B2 is greater than the sum of the projected areas of the first support members 12 per unit area in the first region B1, that is, the support area of the first support members 12 in the second region B2 is larger. Even if there is a misalignment between the mask plate and the display panel 01, the mask plate can be well supported by the first support members 12 in the second region B2, avoiding the mask plate from scratching the functional film layer of the display panel 01. In particular, the edge of the shielding portion M11 of the first mask plate M1 can be effectively supported by the first support members 12 in the second region B2, avoiding the first mask plate M1 from scratching the functional film layer in the light-transmitting display area BB. This effectively improves the yield rate of the display panel 01.

[0071] In an embodiment of the present application, as Figure 2 shown, the second region B2 includes a first support member 12, and the first support member 12 at least surrounds part of the first region B1. Optionally, the edge of the first region B1 close to the second region B2 is completely surrounded by the first support member 12 in the second region B2. It should be noted that when there are multiple first support members 12 in the second region B2, the multiple first support members 12 are connected as a whole, and the multiple first support members 12 should be regarded as one first support member 12. Further, the first support member 12 in the second region B2 is located at the edge of the second region B2 close to the main display area AA. During the preparation of the first common electrode 11 and the second common electrode 21, the first support member 12 at the edge of the second region B2 close to the main display area AA can well support the shielding portion of the mask plate, avoiding the situation where the mask plate is not effectively supported at the junction of the main display area AA and the light-transmitting display area BB, thereby avoiding the mask plate from scratching the functional film layer of the display panel 001.

[0072] Figure 9 It is a schematic diagram of a light-transmitting display area related to the present application, Figure 10 It is another schematic diagram of a light-transmitting display area related to the present application.

[0073] In an embodiment of the present application, as Figure 9 shown, the second region B2 includes at least two first support members 12, and the at least two first support members 12 at least surround part of the first region B1. Optionally, the first support members 12 in the second region B2 are evenly distributed along the extending direction of the edge between the second region B2 and the first region B1. It should be noted that the first support members 12 in the second region B2 can also be as Figure 10 shown, and are unevenly distributed along the extending direction of the edge between the second region B2 and the first region B1. Further, the first support members 12 in the second region B2 are located at the edge of the second region B2 close to the main display area AA.

[0074] Figure 11 Another schematic diagram of a light-transmitting display area related to this application.

[0075] As Figure 11 shown, in an embodiment of this application, along the thickness direction of the display panel 01, the center line or the center connection line of the projections of the multiple first support members 12 in the second area B2 is in a broken line shape. That is, when there is one first support member 12 in the second area B2, the center line of this first support member 12 is in a broken line shape; when there are multiple first support members 12 in the second area B2, these first support members 12 are arranged in a staggered manner along a virtual broken line.

[0076] It can be understood that the second area B2 may only include one first support member 12, and the shape of the first support member 12 is serrated. The second area B2 may also include multiple second support members 12. Along the thickness direction of the display panel 01, the projections of the multiple second support members 12 are sequentially connected to form a broken line including a first segment extending along the first direction X and a second segment extending along the second direction Y. That is to say, the multiple first support members 12 are arranged in a staggered manner. For example, the multiple first support members 12 are arranged in a staggered manner along the edge of the second area B2. It can be understood that the first support members 12 arranged in a non-linear manner improve the stability of the first support members 12 when supporting the mask plate. Optionally, the first support members 12 in the second area B2 are arranged in a serrated manner. Further, the first support members 12 in the second area B2 are located at the edge of the second area B2 close to the main display area AA. When using the mask plate to prepare the first common electrode 11 and the second common electrode 21, the mask plate is more firmly supported by the first support members 12 in the second area B2 at the junction of the main display area AA and the light-transmitting display area BB, avoiding the mask plate from contacting the film layers that have been prepared in the display panel 01, thereby avoiding the mask plate from scratching the functional film layer of the display panel 001.

[0077] Figure 12 A partial schematic diagram of a display panel related to this application; Figure 13 is Figure 12 the cross-sectional view along the A-A' tangent line in

[0078] In an embodiment of this application, please combine Figure 12 and Figure 13, the display panel 01 further includes a substrate 10 and a pixel definition layer 20. The pixel definition layer 20 includes a plurality of openings 201. The main display area AA includes a plurality of second sub-pixels 22, and the transmissive display area BB includes a plurality of first sub-pixels 13. The first sub-pixels 13 and the second sub-pixels 22 are located in different openings 201 of the pixel definition layer 20. The first sub-pixel 13 includes a first light-emitting material unit 131, an anode 132, and a cathode. The second sub-pixel 22 includes a second light-emitting material unit 221, an anode 222, and a cathode. It can be understood that the part of the first common electrode 11 covering the first light-emitting material unit 131 is the cathode of the first sub-pixel 13, and the part of the second common electrode 21 covering the second light-emitting material unit 221 is the cathode of the second sub-pixel 22. The first sub-pixels 13 and the second sub-pixels 22 can be sub-pixels that emit the same color or sub-pixels that emit different colors. Along the direction X1 from the main display area AA to the second area B2, the first support member 12 in the second area B2 is located between the adjacent first sub-pixel 13 and the second sub-pixel 22. That is to say, along the thickness direction of the display panel, the projection of the first support member 12 in the second area B2 is located between the projection of the adjacent first sub-pixel 13 and the projection of the second sub-pixel 22. That is, along the thickness direction of the display panel 01, the first support member 12 in the second area B2 does not overlap with the first sub-pixel 13. It can be understood that the first support member 12 in the second area B2 does not overlap with the second sub-pixel 22 in the main display area AA.

[0079] In the embodiment of the present application, since the first support member 12 in the second area B2 does not overlap with the first sub-pixel 13, the first support member 12 in the second area B2 will not block the light emitted by the first sub-pixel 13, avoiding the influence on the display brightness of the transmissive display area BB. Along the thickness direction of the display panel, the projection of the first support member 12 in the second area B2 is located between the projection of the adjacent first sub-pixel 13 and the projection of the second sub-pixel 22, which means that the first support member 12 in the second area B2 is located at the edge of the second area B2 close to the main display area AA. When using a mask plate to prepare the first common electrode 11 and the second common electrode 21, the first support member 12 in this embodiment can well support the mask plate at the junction of the main display area AA and the transmissive display area BB, avoiding the mask plate from scratching the functional film layer of the display panel 01.

[0080] Figure 14 It is a schematic diagram of the projection positions of a first support member and sub-pixels related to the present application.

[0081] As Figure 13 and Figure 14As shown, in an embodiment of the present application, in the thickness direction of the display panel 01, the minimum distance between the orthographic projection of the first support member 12 located in the second region B2 on a plane parallel to the display panel 01 and the orthographic projection of an adjacent first sub-pixel 13 on a plane parallel to the display panel 01 is D1, and D1 ≥ 3 μm; the minimum distance between the orthographic projection of the first support member 12 located in the second region B2 on a plane parallel to the display panel and the orthographic projection of an adjacent second sub-pixel 22 on a plane parallel to the display panel 01 is D2, and D2 ≥ 3 μm.

[0082] It can be understood that the first common electrode 11 covers the first sub-pixel 13. In one implementation manner of the embodiment of the present application, as Figure 13 shown, the first common electrode 11 simultaneously covers the first support member 12 in the second region B2 and the adjacent first sub-pixel 13. At this time, the minimum distance between the orthographic projection of the first support member 12 on a plane parallel to the display panel 01 and the orthographic projection of the adjacent first sub-pixel 13 on a plane parallel to the display panel 01 is not less than 3 μm, which can ensure that the first common electrode 11 completely covers the first sub-pixel 13 and avoid breakage of the first common electrode 11.

[0083] In another implementation manner of the embodiment of the present application, the first common electrode 11 does not cover the first support member 12 in the second region B2. Then, when preparing the first common electrode 11 using a mask plate, the first support member 12 provided in the embodiment of the present application can effectively support the shielding portion of the mask plate while ensuring that the first common electrode 11 completely covers the first sub-pixel 13, and avoid contact between the mask plate and the film layer already prepared in the display panel 01, thereby avoiding scratching the functional film layer of the display panel 01. It can be understood that the second common electrode 21 also does not cover the first support member 12 in the second region B2. When preparing the second common electrode 21 using a mask plate, the first support member 12 provided in the embodiment of the present application can effectively support the shielding portion of the mask plate while ensuring that the second common electrode 21 completely covers the second sub-pixel 22, and avoid contact between the mask plate and the film layer already prepared in the display panel 01, thereby avoiding scratching the functional film layer of the display panel 01.

[0084] Figure 15 is a partial schematic diagram of another display panel related to the present application. Figure 16 is Figure 15 a cross-sectional view along the tangent line A - A' in

[0085] In still another implementation manner of the embodiment of the present application, as Figure 15 and Figure 16As shown, while the first common electrode 11 covers the first sub-pixel 13, it also covers a part of the first support member 12 adjacent to the first sub-pixel 13. That is to say, in the first support member 12 located between the adjacent first sub-pixel 13 and the second sub-pixel 22, a part of the first support member 12 is not covered by the first common electrode 11. When preparing the first common electrode 11 and the second common electrode 21 using a mask plate, the edge of the shielding portion of the mask plate is located on the first support member 12. The first support column 12 provided in this embodiment can effectively support the shielding portion of the mask plate, preventing the shielding portion of the mask plate from contacting the edge position of the light-transmitting display area BB close to the main display area AA, thereby avoiding scratching the functional film layer at the edge position of the light-transmitting display area BB close to the main display area AA.

[0086] In an embodiment provided by the present application, D1 = D2. That is to say, along the thickness direction of the display panel 01, the minimum distance between the orthographic projection of the first support member 12 located in the second region B2 on a plane parallel to the display panel 01 and the orthographic projection of the adjacent first sub-pixel 13 on a plane parallel to the display panel 01 is equal to the minimum distance between the orthographic projection of the first support member 12 located in the second region B2 on a plane parallel to the display panel and the orthographic projection of the adjacent second sub-pixel 22 on a plane parallel to the display panel 01.

[0087] It should be noted that as Figure 12 , Figure 15 shown, the main display area AA also includes a second support member 23. Along the thickness direction of the display panel 01, the minimum distance between the projection of the second support member 23 and the projection of the second sub-pixel 22 is not less than 3 μm.

[0088] In an embodiment provided by the present application, along the thickness direction of the display panel 01, the shortest distance between the projection of the first support member 12 located in the second region B2 and the projection of the adjacent second sub-pixel 22 is greater than the shortest distance between the projection of the second support member 23 and the projection of the adjacent second sub-pixel 22, and the shortest distance between the projection of the first support member 12 located in the second region B2 and the projection of the adjacent first sub-pixel 13 is greater than the shortest distance between the projection of the second support member 23 and the projection of the adjacent second sub-pixel 22. When preparing the first common electrode 11 and the second common electrode 21 using a mask plate, since the first support member 12 in the second region B2 is used to support the mask plate, the mask plate will scratch the first support plate 12 in the second region B2, resulting in impurities appearing in the film layer of the display panel 01. The distance between the first support member 12 located in the second region B2 and the adjacent second sub-pixel 22 and the first sub-pixel 13 is set relatively large, which can effectively prevent impurities generated due to wear of the first support member 12 from entering the adjacent sub-pixel area, thereby avoiding affecting the normal display of the display panel 01.

[0089] Please continue to refer to Figure 12 , in an embodiment provided by the present application, the plurality of hollow portions 110 include a first hollow portion 110A located in the second region B2. In a direction perpendicular to the plane where the display panel 01 is located, the first hollow portion 110A at least partially covers the first support member 12. That is to say, along the thickness direction of the display panel 01, at least a part of the first support member 12 located in the second region B2 overlaps with the first hollow portion 110A.

[0090] In an embodiment of the present application, the first common electrode 11 includes a part located in the second region B2, and at least a part of the first common electrode 11 located in the second region B2 is covered with the first support member 12. That is to say, along the thickness direction of the display panel 01, a part of the first support member 12 located in the second region B2 is covered by the first common electrode 11.

[0091] In yet another embodiment of the present application, please continue to refer to Figure 15 , at least a part of the first common electrode 11 located in the second region B2 covers a part of the first support member 12. That is to say, along the thickness direction of the display panel 01, in a part of the first support member 12 located in the second region B2, a part of the first support member 12 does not overlap with the first common electrode 11.

[0092] In the present application, along the thickness direction of the display panel 01, a part of the first support member 12 located in the second region B2 is covered by the first common electrode 11, and the other part does not overlap with the first common electrode 11. It can ensure that the distribution of the first support member 12 in the second region B2 is more uniform. When using a mask plate to prepare the first common electrode 11 and the second common electrode 21, even if there is a deviation in the alignment of the mask plate with the display panel 01, the first support member 12 in the second region B2 can effectively support the mask plate and avoid the mask plate from scratching the functional film layer of the display panel 01.

[0093] Figure 17 FIG. is a schematic diagram of the projection positions of a first common electrode and a first support member related to the present application, Figure 18 FIG. is another schematic diagram of a light-transmitting display area related to the present application.

[0094] In an embodiment of the present application, in combination with Figure 15 , Figure 16 and Figure 17, along the thickness direction of the display panel 01, at least part of the first support member 12 is not completely covered by the first common electrode 11. When using a mask plate to prepare the first common electrode 11 and the second common electrode 21, part of the first support member 12 is used to support the shielding portion of the mask plate, and there is also a part of the area located in the hollow area of the mask plate. That is to say, there is a part of the first support member 11 that supports the edge area of the shielding portion of the mask plate, so that the edge area of the shielding portion of the mask plate is effectively supported, avoiding the mask plate from scratching the functional film layer of the display panel 01.

[0095] In the present application, it should be noted that when the first area B1 includes the first support member 12 and the first area B1 includes the first sub-pixel 13, along the thickness direction of the display panel 01, the first support member 12 and the first sub-pixel 13 do not overlap, and the minimum distance between the projection of the first support member 12 and the projection of the first sub-pixel 13 is not less than 3 μm. Optionally, as Figure 18 shown, the first area B1 includes the first sub-pixel 13, and the second area B2 does not include the first sub-pixel 13.

[0096] Figure 19 A schematic diagram of another display panel provided by an embodiment of the present application, Figure 20 A schematic diagram of another display panel provided by an embodiment of the present application, Figure 21 A partial schematic diagram of a display panel related to the present application.

[0097] An embodiment of the present application provides a display panel 01', including a main display area AA' and a light-transmitting display area BB', and the main display area AA' surrounds at least part of the light-transmitting display area BB'. It should be noted that the main display area AA' can be as Figure 19 shown, surrounding part of the light-transmitting display area BB', or as Figure 20 shown, the main display area AA' surrounds the entire light-transmitting display area BB'. As Figure 21 shown, the light-transmitting display area BB' includes a plurality of first support members 12' and a plurality of first sub-pixels 13', and at least part of the first sub-pixels 13' are located at the edge of the light-transmitting display area BB' close to the main display area AA'. The main display area AA' includes a plurality of second sub-pixels 22', and at least part of the second sub-pixels 22' are located at the edge of the main display area AA' close to the light-transmitting display area BB'.

[0098] Among them, a first support member 12' is provided between at least part of the adjacent first sub-pixels 13' and the second sub-pixels 22'. That is to say, along the thickness direction of the display panel 01', between the projections of at least part of the adjacent first sub-pixels 13' and the projections of the second sub-pixels 22', the projection of the first support member 12' is included.

[0099] It can be understood that by patterning the common electrode of the display panel 01', the light transmittance of the light-transmissive display area BB' can be improved. The manufacturing process of the common electrode of the display panel 01' can be an evaporation process, and two mask plates need to be combined to prepare the patterned common electrode of the display panel 01'. To save manufacturing costs, a common metal mask (CMM) and a fine metal mask (FMM) are usually used in combination to prepare the patterned common electrode. Since the CMM is usually used to prepare the common electrode with a large area, the hollowed-out part of the CMM is relatively large. And the CMM with a large hollowed-out part is generally prepared by a single-sided etching method, which results in more burrs and the like at the edge of the shielding part in the CMM. Then, the shielding part around the hollowed-out part is more likely to scratch the functional film layer of the display panel. Especially, the shielding part located in the light-transmissive display area BB' affects the yield and display effect of the display panel 01 by scratching the functional film layer of the display panel 01.

[0100] In the present application, at least part of the first support member 12' is disposed between adjacent first sub-pixels 13' and second sub-pixels 22'. Then, when using a mask plate to prepare the patterned common electrode of the display panel 01', the first support member 12' in the present application can well support the edge of the shielding part of the mask plate, avoiding the mask plate from scratching the functional film layer of the light-transmissive display area BB'. Especially when using the CMM to prepare the common electrode with a large area, the first support 12' in the present application can effectively support the shielding part of the CMM at the junction of the main display area AA' and the light-transmissive display area BB', avoiding the CMM from scratching the functional film layer at the junction of the main display area AA' and the light-transmissive display area BB', and effectively improving the finished product yield of the display panel 01'.

[0101] Please continue to refer to Figure 21 , in an embodiment of the present application, at least part of the first sub-pixels 13', the first support member 12' is disposed between adjacent first sub-pixels 13'. That is to say, along the thickness direction of the display panel 01', at least part of the projection between adjacent first sub-pixels 13' includes the projection of the first support member 12'. The embodiment of the present application further increases the density of the first support member 12' in the area of the light-transmissive display area BB' close to the main display area AA'. Thereby further improving the supporting force for the mask plate and avoiding the mask plate from scratching the functional film layer of the display panel 01'.

[0102] Figure 22 It is a schematic diagram of the projection of a first support member and a first sub-pixel related to the present application.

[0103] In an embodiment of the present application, as Figure 22As shown, along the thickness direction of the display panel 01', the minimum distance between the positive projection of the first support member 12' on a plane parallel to the display panel 01' and the positive projection of an adjacent first sub-pixel 13' on a plane parallel to the display panel 01' is D, where D ≥ 3 μm.

[0104] In this application, the first support member 12' is arranged away from the first sub-pixel 13', so that the first support member 12' does not block the light-emitting light of the first sub-pixel 13', avoiding the influence on the display brightness of the light-transmitting display area BB. At the same time, it can also ensure that the first sub-pixel 13' is completely covered by the cathode, and avoid the cathode covering the first sub-pixel 13' from breaking.

[0105] Figure 23 It is a schematic diagram of a display device provided by an embodiment of this application.

[0106] As Figure 23 shown, an embodiment of this application provides a display device 001. The display device 001 includes the display panel 01 / 01' provided by any one of the above embodiments. The display device 001 provided by the embodiment of this application can be a mobile phone. In addition, the display device 001 provided by the embodiment of this application can also be a display device such as a computer or a TV.

[0107] The display device 001 further includes an optical functional element 02, and the optical functional element 02 is arranged at a position corresponding to the light-transmitting display area BB / BB' of the display panel 01 / 01' of the display device 001. That is, along the thickness direction of the display panel 01, the optical functional element 02 is arranged below the light-transmitting display area BB / BB' / of the display panel 01 / 01'. Then the optical functional element 02 can emit light to the light-emitting surface side of the display panel 01 / 01' through the light-transmitting display area BB / BB', or can receive light from the light-emitting surface side of the display panel 01 / 01' through the light-transmitting display area BB / BB'.

[0108] Among them, the optical functional element 02 is at least one of an optical fingerprint sensor, an iris recognition sensor, a camera, and a flashlight.

[0109] The above are only the preferred embodiments of this application, and are not intended to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included within the scope of protection of this application.

Claims

1. A display panel, characterized in that, Comprising: A main display area and a light-transmissive display area, wherein the main display area surrounds at least part of the light-transmissive display area; The display panel comprises: A first common electrode disposed in the light-transmissive display area, the first common electrode including a plurality of hollow portions; A second common electrode disposed in the main display area, and the second common electrode is disposed over the entire surface of the main display area; At least one first support member disposed in the light-transmissive display area; Wherein, the light-transmissive display area includes a first area and a second area, the second area surrounds at least part of the first area, and the second area is located on a side of the first area close to the main display area; along the thickness direction of the display panel, the sum of the projected areas of the first support members disposed per unit area of the second area is greater than the sum of the projected areas of the first support members disposed per unit area of the first area; The main display area includes a plurality of second sub-pixels, and the light-transmissive display area includes a plurality of first sub-pixels; along the direction from the main display area to the second area, the first support member located in the second area is located between adjacent first sub-pixels and second sub-pixels.

2. The display panel according to claim 1, characterized in that, The second area includes one first support member, and the first support member at least partially surrounds the first area.

3. The display panel according to claim 1, characterized in that, The second area includes at least two first support members, and the at least two first support members at least partially surround the first area.

4. The display panel according to any one of claims 1 - 3, characterized in that, Along the thickness direction of the display panel, the center line or the center connection line of the projection of the first support member in the second area is in a broken line shape.

5. The display panel according to claim 1, characterized in that, Along the thickness direction of the display panel, the minimum distance between the positive projection of the first support member located in the second area on a plane parallel to the display panel and the positive projection of the adjacent first sub-pixel on a plane parallel to the display panel is D1, and D1≥3μm; The minimum distance between the positive projection of the first support member located in the second area on a plane parallel to the display panel and the positive projection of the adjacent second sub-pixel on a plane parallel to the display panel is D2, and D2≥3μm.

6. The display panel according to claim 5, characterized in that, D1 = D2.

7. The display panel according to claim 1, characterized in that, Among the plurality of hollow portions, there is a first hollow portion located in the second area, and along the direction perpendicular to the plane where the display panel is located, the first hollow portion at least partially covers the first support member.

8. The display panel according to claim 1, characterized in that, The first common electrode includes a portion located in the second area, and at least part of the first common electrode located in the second area covers the first support member.

9. The display panel according to claim 1, characterized in that, Along the thickness direction of the display panel, at least part of the first support member is not completely covered by the first common electrode.

10. A display panel, characterized in that, Including a main display area and a light-transmissive display area, the main display area surrounds at least part of the light-transmissive display area; The light-transmissive display area includes: A plurality of first support members; A plurality of first sub-pixels, at least part of the first sub-pixels are located at the edge of the light-transmissive display area close to the main display area; The main display area includes: A plurality of second sub-pixels, at least part of the second sub-pixels being located at an edge of the main display area close to the transmissive display area; Wherein, the first support member is disposed between at least some adjacent first sub-pixels and the second sub-pixels.

11. The display panel according to claim 10, characterized in that, In at least part of the first sub-pixels, the first support member is disposed between adjacent first sub-pixels.

12. The display panel according to claim 10, characterized in that, In the thickness direction of the display panel, the minimum distance between the orthographic projection of the first support member on a plane parallel to the display panel and the orthographic projection of the adjacent first sub-pixels on a plane parallel to the display panel is D, where D≥3μm.

13. A display device, characterized in that, The display device includes the display panel as described in any one of claims 1-12 and an optical functional element; the optical functional element is disposed at a position of the display device corresponding to the transmissive display area.

14. The display device according to claim 13, characterized in that, The optical functional element is at least one of an optical fingerprint sensor, an iris recognition sensor, a camera, and a flashlight.

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