Display panel and electronic equipment

Abstract

The embodiment of the invention provides a display panel, a preparation method of the display panel and electronic equipment, and relates to the technical field of display. In the display panel, an isolation structure is provided with an isolation opening and a light-transmitting opening in a first display area and a second display area, so that etching loading of the two display areas can be ensured to be basically consistent when the openings are formed by etching, and the side wall morphology of the isolation structure in the isolation opening is basically the same; the lap joint efficiency is consistent when the electrodes are in lap joint with the side walls of the isolation structures in the isolation openings in the different areas, so that the problem that display of different display areas is inconsistent due to the fact that the lap joint efficiency of the electrodes and the isolation structures is inconsistent can be solved, and the overall display effect of the display panel is improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and an electronic device. Background Art

[0002] Organic Light Emitting Diode (OLED) is considered to be the next generation display technology after liquid crystal display technology. Due to its excellent color and picture quality, it is widely used in various consumer electronic devices such as smartphones, TVs, laptops, desktop computers, car displays, wearable devices, etc., and has become the mainstream technology in display panels.

[0003] However, the process performance of current OLED display products needs to be further improved. Summary of the invention

[0004] In order to overcome the technical problems mentioned in the above technical background, the present application provides a display panel and an electronic device.

[0005] In a first aspect of the present application, a display panel is provided, the display panel comprising a first display area and a second display area at least partially surrounding the first display area, the display panel further comprising:

[0006] substrate;

[0007] The isolation structure is located on one side of the substrate, and the isolation structure includes an isolation opening and a light-transmitting opening. The isolation opening is distributed in the first display area and the second display area, and the light-transmitting opening is also distributed in the first display area and the second display area.

[0008] In a possible implementation of the present application, a density difference between a distribution density of the isolation openings in the first display area and a distribution density of the isolation openings in the second display area is within 10%;

[0009] The density difference between the distribution density of the light-transmitting openings in the first display area and the distribution density of the light-transmitting openings in the second display area is within 10%;

[0010] Preferably, the distribution density of the isolation openings in the first display area is the same as the distribution density of the isolation openings in the second display area;

[0011] Preferably, the distribution density of the light-transmitting openings in the first display area is the same as the distribution density of the light-transmitting openings in the second display area;

[0012] Preferably, the orthographic projection of the isolation opening on the substrate does not overlap with the orthographic projection of the light-transmitting opening on the substrate;

[0013] Preferably, the first display area includes an optical sensing area.

[0014] In a possible implementation of the present application, the display panel further includes:

[0015] The array wiring layer is located between the substrate and the isolation structure, wherein in a direction away from the substrate, the array wiring layer includes a plurality of conductive layers and an insulating layer located between adjacent conductive layers.

[0016] In a possible implementation of the present application, the display panel further includes:

[0017] A shielding layer, located on a side of the isolation structure facing the array wiring layer;

[0018] The shielding layer is at least located in the second display area, and the orthographic projection of the shielding layer on the substrate at least covers the orthographic projection of the light-transmitting opening in the second display area on the substrate;

[0019] Preferably, an orthographic projection of the shielding layer on the substrate does not overlap with an orthographic projection of the isolation opening on the substrate.

[0020] In a possible implementation manner of the present application, the material of the shielding layer includes a transparent conductive material;

[0021] Preferably, the shielding layer is located in the first display area and the second display area, and the orthographic projection of the shielding layer on the substrate covers the orthographic projection of the light-transmitting opening on the substrate;

[0022] Preferably, the shielding layers covering different light-transmitting openings are connected to each other;

[0023] Preferably, the material of the shielding layer includes indium tin oxide, indium zinc oxide, indium gallium zinc oxide or indium tin zinc oxide.

[0024] In a possible implementation of the present application, the display panel further includes:

[0025] A shielding layer, wherein the shielding layer is formed by a conductive layer on a side of the array wiring layer away from the substrate;

[0026] Preferably, in a direction away from the substrate and when the array wiring layer comprises a first conductive layer, a second conductive layer, a third conductive layer and a fourth conductive layer stacked in sequence, the shielding layer is formed by the fourth conductive layer; or,

[0027] When the array wiring layer includes a first conductive layer, a second conductive layer, a third conductive layer, a fourth conductive layer and a fifth conductive layer stacked in sequence in a direction away from the substrate, the shielding layer is formed by the fifth conductive layer.

[0028] In a possible implementation of the present application, the shielding layer is located in the second display area.

[0029] The orthographic projection of the shielding layer on the substrate covers the orthographic projection of the light-transmitting opening in the second display area on the substrate;

[0030] Preferably, the orthographic projection of the shielding layer on the substrate does not overlap with the orthographic projection of the isolation opening on the substrate;

[0031] Preferably, the shielding layers covering different light-transmitting openings are connected to each other.

[0032] In a possible implementation of the present application, the shielding layer includes a plurality of conductive films, wherein the shielding layer includes a first conductive film, a second conductive film, and a third conductive film stacked in sequence;

[0033] Preferably, the material of the first conductive film is the same as the material of the third conductive film;

[0034] Preferably, the material of the first conductive film and the material of the third conductive film include titanium or molybdenum, and the material of the second conductive film includes aluminum.

[0035] In a possible implementation of the present application, the display panel further includes:

[0036] A touch function layer, located on a side of the isolation structure away from the substrate, wherein the touch function layer includes touch wiring;

[0037] The array routing layer includes signal routing formed by the conductive layer;

[0038] The shielding layer is located between the touch control wiring and the signal wiring, and is used to shield the signal crosstalk between the touch control wiring and the signal wiring;

[0039] Preferably, in the first display area, an orthographic projection of the touch-control trace on the substrate does not overlap with an orthographic projection of the light-transmitting opening on the substrate.

[0040] In a possible implementation of the present application, the array wiring layer includes a power signal wiring, and the shielding layer is connected to the power signal wiring;

[0041] Alternatively, the array wiring layer further includes a ground wiring, and the shielding layer is connected to the ground wiring.

[0042] In a possible implementation of the present application, the display panel further includes a pixel defining layer, the pixel defining layer is located on the substrate, and the isolation structure is located on a side of the pixel defining layer away from the substrate;

[0043] The pixel defining layer comprises a pixel opening, wherein an orthographic projection of the pixel opening on the substrate is located within an orthographic projection of the isolation opening on the substrate;

[0044] Preferably, the pixel defining layer is an inorganic pixel defining layer;

[0045] Preferably, the pixel defining layer is a single-layer structure of silicon oxide or silicon nitride, or a stacked-layer structure formed alternately of silicon oxide and silicon nitride.

[0046] In a possible implementation of the present application, the display panel further includes a light-emitting device, at least part of which is located in the pixel opening, and in a direction away from the substrate, the light-emitting device includes a first electrode, a light-emitting material layer, and a second electrode that are stacked; wherein the second electrode overlaps the isolation structure;

[0047] The first electrode is disposed on a side of the pixel definition layer close to the substrate, and at least a portion of the first electrode is exposed from the pixel opening;

[0048] The first electrode is insulated from the shielding layer;

[0049] Preferably, the orthographic projection of the light emitting device on the substrate does not overlap with the orthographic projection of the light-transmitting opening on the substrate;

[0050] Preferably, the shielding layer is provided in the same layer as the first electrode, and the shielding layer is insulated from the first electrode.

[0051] In a possible implementation of the present application, the isolation structure includes a first isolation portion and a second isolation portion that are stacked, the second isolation portion is arranged on a side of the first isolation portion that is away from the substrate, and an orthographic projection of the first isolation portion on the substrate is located within an orthographic projection of the second isolation portion on the substrate;

[0052] Preferably, the first isolating portion is a conductive isolating portion, and the first electrode overlaps the first isolating portion;

[0053] Preferably, the isolation structure further comprises a third isolation portion, and in a direction away from the substrate, the third isolation portion, the first isolation portion and the second isolation portion are stacked in sequence, and the orthographic projection of the first isolation portion on the substrate is located within the orthographic projection of the third isolation portion on the substrate;

[0054] Preferably, the orthographic projection of the third isolation portion on the substrate is located within the orthographic projection of the second isolation portion on the substrate;

[0055] Preferably, the third isolation portion is a conductive isolation portion, and the first electrode is also overlapped with the third isolation portion;

[0056] Preferably, the material of the first isolation portion includes aluminum, silver or copper, the material of the second isolation portion includes titanium or molybdenum, and the material of the third isolation portion includes molybdenum or titanium.

[0057] In a possible implementation of the present application, the display panel further includes a first encapsulation layer, the first encapsulation layer includes a plurality of encapsulation units, and the encapsulation units are used to encapsulate the light-emitting device in the isolation opening;

[0058] Preferably, the display panel further comprises a second encapsulation layer, the second encapsulation layer is located on a side of the encapsulation unit away from the substrate, and the second encapsulation layer at least covers the encapsulation unit;

[0059] Preferably, the second encapsulation layer fills the isolation opening and the light-transmitting opening, and the second encapsulation layer comprises a flat surface on a side away from the substrate;

[0060] Preferably, the display panel further comprises a third encapsulation layer, and the third encapsulation layer is located on a side of the second encapsulation layer away from the substrate;

[0061] Preferably, the first encapsulation layer and the third encapsulation layer are inorganic encapsulation layers, and the second encapsulation layer is an organic encapsulation layer.

[0062] The second invention of the present application further provides a display panel, the display panel comprising a first display area and a second display area at least partially surrounding the first display area, the display panel further comprising:

[0063] substrate;

[0064] An isolation structure, located at one side of the substrate, the isolation structure comprising an isolation opening and a light-transmitting opening, the isolation opening is distributed in the first display area and the second display area, and the light-transmitting opening is also distributed in the first display area and the second display area;

[0065] In a direction away from the substrate, the isolation structure includes a first isolation portion and a second isolation portion which are stacked, wherein the second isolation portion extends toward the corresponding isolation opening or the corresponding light-transmitting opening relative to the first isolation portion;

[0066] In the first display area, the second isolation portion has a first extension length relative to the first isolation portion; in the second display area, the second isolation portion has a second extension length relative to the first isolation portion;

[0067] A difference between the first extended length and the second extended length is less than 10% of either.

[0068] In a possible implementation of the present application, the first extended length is equal to the second extended length.

[0069] According to a third aspect of the present application, an electronic device is provided, comprising an optical sensor and a display panel according to any possible implementation of the first aspect, wherein the optical sensor is correspondingly arranged below a first display area in the display panel.

[0070] The embodiments of the present application provide a display panel and an electronic device. In the display panel, an isolation structure is provided with an isolation opening and a light-transmitting opening in a first display area and a second display area. Thus, when etching to form the above-mentioned openings, it can be ensured that the etching loading of the two display areas is basically the same, the side wall morphology of the isolation structure in the isolation opening is basically the same, and the overlapping efficiency of the electrode when overlapping the side wall of the isolation structure in the isolation opening in different areas is consistent. Thus, the problem of inconsistent display in different display areas caused by inconsistent overlapping efficiency of the electrode and the isolation structure can be solved, thereby improving the overall display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] In order 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. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0072] Figure 1 A schematic diagram illustrating the regional distribution of the display panel provided in this embodiment;

[0073] Figure 2 The schematic diagram illustrating the distribution of the isolation structure, isolation openings and light-transmitting openings provided in this embodiment is illustrated;

[0074] Figure 3 Example Figure 2 One of the cross-sectional diagrams at the AA position;

[0075] Figure 4 Example Figure 2 The second cross-sectional diagram at the AA position;

[0076] Figure 5 One of the schematic diagrams illustrating the positional relationship between the shielding layer, the isolation opening, and the light-transmitting opening;

[0077] Figure 6 The second schematic diagram illustrates the positional relationship between the shielding layer, the isolation opening, and the light-transmitting opening;

[0078] Figure 7 An example of a membrane layer structure schematic diagram of an array routing layer is shown;

[0079] Figure 8 Another schematic diagram of the film layer structure of the array routing layer is illustrated;

[0080] Fig. 9 A schematic diagram of a film structure of a shielding layer is illustrated;

[0081] Fig.10 Example Figure 2 The third cross-sectional diagram at the AA position;

[0082] Fig.11 Example Figure 2 The fourth cross-sectional diagram at the AA position;

[0083] Fig.12 Example Figure 2 The fifth cross-sectional diagram at the AA position;

[0084] Fig.13 A schematic diagram illustrating the structure of the isolation structures provided in the first display area and the second display area respectively provided in the present embodiment;

[0085] Fig.14 Another structural schematic diagram illustrating the isolation structure provided by this embodiment;

[0086] Fig.15 A schematic diagram of the structure of an electronic device is illustrated.

[0087] Icons: 1-display panel; 11-substrate; 12-isolation structure; 1201-isolation opening; 1202-light-transmitting opening; 121-first isolation part; 122-second isolation part; 123-third isolation part; 13-array wiring layer; 131-conductive layer; 1311-first conductive layer; 1312-second conductive layer; 1313-third conductive layer; 1314-fourth conductive layer; 1315-fifth conductive layer; 14-shielding layer ; 141-first conductive film; 142-second conductive film; 143-third conductive film; 15-touch function layer; 151-touch routing; 16-pixel definition layer; 1601-pixel opening; 17-light-emitting device; 171-first electrode; 172-light-emitting material layer; 173-second electrode; 181-first packaging layer; 1811-packaging unit; 182-second packaging layer; 183-third packaging layer; 2-optical sensor. DETAILED DESCRIPTION

[0088] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0089] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0090] Improving the density of light-emitting devices in a display panel (i.e., pixel density) is an important way to improve the display effect. However, the display panels currently made using fine metal evaporation mask (FMM) technology are unable to further increase the density of light-emitting devices due to technical limitations. After long-term research, the inventors found that in order to solve the technical problem that the density of light-emitting devices cannot be further increased, an isolation structure is set in some display panels. When the light-emitting material layer and the cathode are evaporated in the entire layer, the light-emitting material layer and the cathode can be disconnected at the isolation structure position. Through multiple evaporation and multiple etching processes, light-emitting devices of different colors can be formed in different isolation openings. The above process is called light-emitting device patterning.

[0091] Patent CN118251982A, Patent 202410864269.8, Patent PCT / CN2024 / 098407, Patent PCT / CN2024 / 102783, Patent PCT / CN2024 / 098217, PCT / CN2024 / 099419, Patent PCT / CN2024 / 099072, Patent CN117979755A, Patent CN117998900A, Patent CN 117062489A, patent CN117580403A, patent CN116583155A, patent CN116669477A, ​​patent CN117396039A, patent CN116669480A, patent CN116600606A and patent CN117500332A record related technical solutions of isolation structure (or partition structure or isolation column) and encapsulation layer, and their contents are incorporated into this application by reference for reference.

[0092] In order to increase the functionality of electronic devices, it is often necessary to set an optical sensor (such as a camera or a fingerprint recognition sensor, etc.) under the display panel. The area where the optical sensor is set needs to have a high light transmittance, and the above setting will cause differences in display effects in different areas of the display panel, affecting the overall display effect of the display panel.

[0093] In order to solve the above problems, the inventor innovatively designed the following technical solution, and the specific implementation scheme of the present application will be described in detail below in conjunction with the accompanying drawings. It should be noted that the defects existing in the above solutions in the prior art are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above technical problems and the solutions proposed in this embodiment below for the above problems should all be the contributions made by the inventor to the present application in the process of invention and creation, and should not be understood as the technical content known to those skilled in the art.

[0094] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 The schematic diagram of the regional distribution of the display panel provided by this embodiment is illustrated. Figure 2 The schematic diagram of the distribution of the isolation structure, isolation openings and light-transmitting openings provided in this embodiment is illustrated. Figure 3 Example Figure 2Schematic cross-sectional view of the AA position in the middle. In the present embodiment, the display panel 1 includes a first display area AA1 and a second display area AA2, the second display area AA2 at least partially surrounds the first display area AA1, the first display area AA1 has good light transmittance, and the shape of the first display area AA1 can be circular, rectangular or teardrop-shaped, etc. In the present embodiment, the specific shape of the first display area AA1 is not limited. When the display panel 1 is used in an electronic device, an optical sensor can be configured below the first display area AA1 of the display panel 1, that is, the first display area AA1 can be used as an optical sensing area, so that the electronic device has functions such as camera and fingerprint recognition.

[0095] In this embodiment, the display panel 1 further includes a substrate 11 and an isolation structure 12, the isolation structure 12 is located on one side of the substrate 11, and the isolation structure 12 includes an isolation opening 1201 and a light-transmitting opening 1202, and the isolation opening 1201 and the light-transmitting opening 1202 penetrate the isolation structure 12. The isolation opening 1201 is distributed in the first display area AA1 and the second display area AA2, and the light-transmitting opening 1202 is also distributed in the first display area AA1 and the second display area AA2, that is, the isolation opening 1201 and the light-transmitting opening 1202 are distributed in the first display area AA1 and the second display area AA2.

[0096] In the related art, in order to increase the light transmittance of the first display area AA1, generally only a light-transmitting opening 1202 is set in the isolation structure 12 at the position of the first display area AA1, which will result in different opening distributions between the first display area AA1 and the second display area AA2 (the first display area AA1 is distributed with isolation openings 1201 and light-transmitting openings 1202, while the second display area AA2 is only distributed with isolation openings 1201). When etching to form the above-mentioned openings, the etching loading of the first display area AA1 and the second display area AA2 are different, and the side wall morphology of the isolation structure 12 in the corresponding isolation opening 1201 will be different, thereby affecting the overlap between the electrode and the side wall of the isolation structure 12 in the isolation opening 1201, and ultimately resulting in differences in display effects (such as display brightness) between the first display area AA1 and the second display area AA2. In the above-mentioned scheme provided by the present application, the isolation structure 12 is provided with an isolation opening 1201 and a light-transmitting opening 1202 in the first display area AA1 and the second display area AA2. In this way, when etching to form the above-mentioned openings, it can be ensured that the etching loading of the two display areas is basically consistent, the side wall morphology of the isolation structure 12 in the isolation opening 1201 is basically the same, and the overlapping efficiency of the electrode and the side wall of the isolation structure 12 in the isolation opening 1201 in different areas is consistent. In this way, the problem of inconsistent display in different display areas caused by inconsistent overlapping efficiency of the electrode and the isolation structure 12 can be solved, thereby improving the overall display effect of the display panel 1.

[0097] Furthermore, in order to improve the difference in sidewall morphology of the isolation structure 12 in different display areas caused by the difference in etching loading, in the present embodiment, the density difference between the distribution density of the isolation openings 1201 in the first display area AA1 and the distribution density of the isolation openings 1201 in the second display area AA2 is within 10%. For example, the density difference between the two is 1%, 2%, 3%, 5%, 8% or 10% of any one of the two distribution densities. Preferably, the distribution density of the isolation openings 1201 in the first display area AA1 and the distribution density of the isolation openings 1201 in the second display area AA2 are the same, that is, the isolation openings 1201 are evenly distributed in the entire display area. The difference in density between the distribution density of the light-transmitting openings 1202 in the first display area AA1 and the distribution density of the light-transmitting openings 1202 in the second display area AA2 is within 10%. For example, the difference in density between the two is 1%, 2%, 3%, 6%, 7% or 10% of any one of the two distribution densities. Preferably, the distribution density of the light-transmitting openings 1202 in the first display area AA1 is the same as the distribution density of the light-transmitting openings 1202 in the second display area AA2, that is, the light-transmitting openings 1202 are evenly distributed in the entire display area.

[0098] Optionally, in this embodiment, the orthographic projection of the isolation opening 1201 on the substrate 11 does not overlap with the orthographic projection of the light-transmitting opening 1202 on the substrate 11, that is, the orthographic projection of the isolation opening 1201 on the substrate 11 is located outside the orthographic projection of the light-transmitting opening 1202 on the substrate 11, and the isolation opening 1201 and the light-transmitting opening 1202 are staggered with each other.

[0099] For further information, please refer to Figure 4 In the present embodiment, the display panel 1 further includes an array wiring layer 13, which is located between the substrate 11 and the isolation structure 12. In the direction away from the substrate 11, the array wiring layer 13 includes a plurality of conductive layers 131 and an insulating layer 132 located between adjacent conductive layers 131, wherein a pixel circuit for driving the light-emitting device to emit light is formed in the array wiring layer 13.

[0100] The inventors discovered that when a light-transmitting opening 1202 is set in the isolation structure 12 of the second display area AA2, there is a problem of crosstalk between the wiring on the side of the isolation structure 12 away from the substrate 11 (such as touch wiring) and the signal wiring in the array wiring layer 13. In order to solve the above technical problem, the following solution is provided in this embodiment to solve the signal crosstalk between the wiring on the upper and lower sides of the isolation structure 12.

[0101] In one implementation of this embodiment, please refer again to Figure 4The display panel 1 further includes a shielding layer 14, which is located on the side of the isolation structure 12 facing the array wiring layer 13. The shielding layer 14 can be made of a newly added film layer. The shielding layer 14 is at least located in the second display area AA2. The orthographic projection of the shielding layer 14 on the substrate 11 at least covers the orthographic projection of the light-transmitting opening 1202 in the second display area AA2 on the substrate 11. Figure 5 As shown, in the second display area AA2 , the orthographic projection of the light-transmitting opening 1202 on the substrate 11 is located within the orthographic projection of the shielding layer 14 on the substrate 11 , and the orthographic projection of the shielding layer 14 on the substrate 11 does not overlap with the orthographic projection of the isolation opening 1201 on the substrate 11 .

[0102] In this embodiment, the shielding layer 14 can be made of a transparent conductive material or an opaque conductive material. In order to ensure the light transmission performance of the first display area AA1, when the shielding layer 14 is made of an opaque conductive material, Figure 5 As shown, the shielding layer 14 is only located in the second display area AA2. When the shielding layer 14 is made of a transparent conductive material, as shown in FIG. Figure 6 As shown, the shielding layer 14 may be located in the first display area AA1 and the second display area AA2.

[0103] Optionally, the shielding layer 14 is made of a transparent conductive material, such as Figure 6 As shown, the orthographic projections of the light-transmitting openings 1202 located in the first display area AA1 and the second display area AA2 on the substrate 11 are both located within the orthographic projection of the shielding layer 14 on the substrate 11. The shielding layers 14 covering different light-transmitting openings 1202 can be connected to each other so that the shielding layers 14 at different positions have the same voltage signal. Exemplarily, the material of the shielding layer 14 includes indium tin oxide, indium zinc oxide, indium gallium zinc oxide, or indium tin zinc oxide.

[0104] In another possible implementation of this embodiment, the display panel 1 further includes a shielding layer 14, which is formed by a conductive layer 131 on a side of the array wiring layer 13 away from the substrate 11, that is, the shielding layer 14 can be made of a film layer in an existing structure.

[0105] For example, please refer to Figure 7 When the array wiring layer 13 includes four conductive layers 131 , that is, in the direction away from the substrate 11 , the array wiring layer 13 includes a first conductive layer 1311 , a second conductive layer 1312 , a third conductive layer 1313 and a fourth conductive layer 1314 stacked in sequence, wherein the shielding layer 14 can be formed by the fourth conductive layer 1314 .

[0106] For example, please refer to Figure 8When the array routing layer 13 includes five conductive layers 131 , that is, in the direction away from the substrate 11 , the array routing layer 13 includes a first conductive layer 1311 , a second conductive layer 1312 , a third conductive layer 1313 , a fourth conductive layer 1314 and a fifth conductive layer 1315 stacked in sequence, wherein the shielding layer 14 can be formed by the fifth conductive layer 1315 .

[0107] In this embodiment, please refer to Fig. 9 The shielding layer 14 includes a plurality of conductive films, and the shielding layer 14 includes a first conductive film 141, a second conductive film 142, and a third conductive film 143 stacked in sequence, wherein the material of the first conductive film 141 is the same as the material of the third conductive film 143. Optionally, the material of the first conductive film 141 and the material of the third conductive film 143 include titanium or molybdenum, and the material of the second conductive film 142 includes aluminum.

[0108] In this embodiment, the shielding layer 14 is located in the second display area AA2, and the orthographic projection of the shielding layer 14 on the substrate 11 covers the orthographic projection of the light-transmitting opening 1202 in the second display area AA2 on the substrate 11, that is, the orthographic projection of the light-transmitting opening 1202 in the second display area AA2 on the substrate 11 is located within the orthographic projection of the shielding layer 14 on the substrate 11. Optionally, the orthographic projection of the shielding layer 14 on the substrate 11 does not overlap with the orthographic projection of the isolation opening 1201 on the substrate 11, that is, the orthographic projection of the shielding layer 14 on the substrate 11 is located outside the orthographic projection of the isolation opening 1201 on the substrate 11. Optionally, the shielding layers 14 covering different light-transmitting openings 1202 can be connected to each other so that the shielding layers 14 at different positions have the same voltage signal.

[0109] Please refer to Fig.10 The display panel 1 also includes a pixel defining layer 16, which is located on one side of the substrate 11. The isolation structure 12 is located on the side of the pixel defining layer 16 away from the substrate 11. The pixel defining layer 16 defines a plurality of pixel openings 1601 on the substrate 11. The pixel openings 1601 are connected to the corresponding isolation openings 1201, and the orthographic projection of the pixel opening 1601 on the substrate 11 is located within the orthographic projection of the isolation opening 1201 on the substrate 11.

[0110] In this embodiment, the pixel defining layer 16 may be an organic pixel defining layer or an inorganic pixel defining layer. Preferably, the pixel defining layer 16 is an inorganic pixel defining layer. When the pixel defining layer 16 is an inorganic pixel defining layer, the pixel defining layer 16 may be a single layer structure of silicon oxide (SiOx) or silicon nitride (SiNx), or a stacked layer structure formed alternately of silicon oxide and silicon nitride.

[0111] Further, please refer again to Fig.10The display panel 1 further includes a light emitting device 17, at least part of which is located in the pixel opening 1601. In the direction away from the substrate 11, the light emitting device 17 includes a first electrode 171, a light emitting material layer 172 and a second electrode 173 which are stacked. The first electrode 171 is spaced apart and distributed on one side of the substrate 11. The pixel opening 1601 exposes at least part of the first electrode 171. The first electrode 171 is connected to a pixel circuit (not shown in the figure) in the array wiring layer 13. The light emitting material layer 172 extends from the pixel opening 1601 to the side of the pixel defining layer 16 away from the substrate 11. The second electrode 173 extends from the pixel opening 1601 to the side of the pixel defining layer 16 away from the substrate 11 and is connected to the isolation structure 12. Exemplarily, the second electrode 173 extends from the pixel opening 1601 to the side of the pixel defining layer 16 away from the substrate 11 and overlaps with the isolation structure 12, wherein the isolation structure 12 is a conductive isolation structure. Exemplarily, the first electrode 171 may be an anode of the light emitting device 17, and the second electrode 173 may be a cathode of the light emitting device 17. In this embodiment, the shielding layer 14 may be provided at the same layer as the first electrode 171, and the shielding layer 14 and the first electrode 171 are insulated.

[0112] Optionally, in this embodiment, the orthographic projection of the light emitting device 17 on the substrate 11 does not overlap with the orthographic projection of the light-transmitting opening 1202 on the substrate 11 , that is, the orthographic projection of the light emitting device 17 on the substrate 11 is outside the orthographic projection of the light-transmitting opening 1202 on the substrate 11 .

[0113] For further information, please refer to Fig.11 The display panel 1 further includes a first encapsulation layer 181 , and the first encapsulation layer 181 includes a plurality of encapsulation units 1811 . Different encapsulation units 1811 are used to encapsulate the light-emitting devices 17 in different isolation openings 1201 .

[0114] Further, please refer again to Fig.11 The display panel 1 further includes a second encapsulation layer 182 . The second encapsulation layer 182 is located on a side of the encapsulation unit 1811 away from the substrate 11 . The second encapsulation layer 182 at least covers the encapsulation unit 1811 .

[0115] Optionally, the second encapsulation layer 182 fills the isolation opening 1201 and the light-transmitting opening 1202. The second encapsulation layer 182 has a flat surface on a side away from the substrate 11.

[0116] Further, please refer again to Fig.11 The display panel 1 further includes a third encapsulation layer 183 , and the third encapsulation layer 183 is located on a side of the second encapsulation layer 182 away from the substrate 11 .

[0117] Optionally, the first encapsulation layer 181 and the third encapsulation layer 183 are inorganic encapsulation layers, and the second encapsulation layer 182 is an organic encapsulation layer. For example, the first encapsulation layer 181 and the third encapsulation layer 183 can be formed by chemical vapor deposition (CVD), and the second encapsulation layer 182 can be formed by inkjet printing (IJP).

[0118] In this embodiment, please refer to Fig.12 The display panel 1 also includes a touch function layer 15, and the touch function layer 15 is located on the side of the isolation structure 12 away from the substrate 11. In detail, the touch function layer 15 is located on the side of the third encapsulation layer 183 away from the substrate 11, and the touch function layer 15 includes a touch line 151. The array wiring layer 13 includes a signal line (not shown in the figure) formed by a conductive layer 131. The shielding layer 14 is located between the touch line 151 and the signal line, and is used to shield the signal crosstalk between the touch line 151 and the signal line. In order to ensure that the first display area AA1 has a strong light transmittance, the orthographic projection of the touch line 151 on the substrate 11 does not overlap with the orthographic projection of the light-transmitting opening 1202 on the substrate 11, so as to avoid the touch line 151 blocking the light-transmitting opening 1202 of the first display area AA1 and affecting the light transmittance of the first display area AA1.

[0119] In one implementation of the present embodiment, the array routing layer 13 includes a power signal routing (not shown in the figure), which can be used to transmit a power signal ELVDD or a power signal ELVSS. The shielding layer 14 is connected to the power signal routing, and the power signal routing provides a constant voltage for the shielding layer 14.

[0120] In another implementation of this embodiment, the array wiring layer 13 includes a ground wiring (not shown in the figure), the shielding layer 14 is connected to the ground wiring, and the ground wiring connection provides a constant ground voltage for the shielding layer 14.

[0121] In this embodiment, please refer to Fig.13 , in the direction away from the substrate 11, the isolation structure 12 includes a first isolation portion 121 and a second isolation portion 122 arranged in a stacked manner, wherein the orthographic projection of the first isolation portion 121 on the substrate 11 is located within the orthographic projection of the second isolation portion 122 on the substrate 11. That is, in the direction toward the isolation opening 1201 or the light-transmitting opening 1202, the second isolation portion 122 extends relative to the first isolation portion 121. In the direction perpendicular to the plane where the substrate 11 is located and along the line connecting the geometric centers of two adjacent isolation openings 1201, the cross-section of the isolation structure 12 may be T-shaped. In the present embodiment, the first isolation portion 121 is a conductive isolation portion, and the second electrode 173 may be connected to the first isolation portion 121 in the isolation structure 12.

[0122] In this embodiment, by providing the light-transmitting opening 1202 in both the first display area AA1 and the second display area AA2, the morphology of the isolation structure 12 in the first display area AA1 and the isolation structure 12 in the second display area AA2 can be made equivalent (the etching loss is equivalent). Specifically, in the first display area AA1, the second isolation portion 122 has a first extension length L1 relative to the first isolation portion 121, and in the second display area AA2, the second isolation portion 122 has a second extension length L2 relative to the first isolation portion 121. The difference between the first extension length L1 and the second extension length L2 is less than 10% of either one of the two, for example, the difference between the first extension length L1 and the second extension length L2 is 1%, 2%, 4%, 7%, 9% or 10% of L1 or L2, etc.

[0123] Preferably, the first extension length L1 and the second extension length L2 are equal.

[0124] For further information, please refer to Fig.14 , the isolation structure 12 also includes a third isolation portion 123. In the direction away from the substrate 11, the third isolation portion 123, the first isolation portion 121 and the second isolation portion 122 are stacked in sequence, and the orthographic projection of the first isolation portion 121 on the substrate 11 is located within the orthographic projection of the third isolation portion 123 on the substrate 11. The orthographic projection of the third isolation portion 123 on the substrate 11 is located within the orthographic projection of the second isolation portion 122 on the substrate 11. In the direction perpendicular to the plane of the substrate 11 and along the line connecting the geometric centers of two adjacent isolation openings 1201, the cross-section of the isolation structure 12 may be I-shaped. In this embodiment, the second electrode 173 may also be connected to the third isolation portion 123, wherein the third isolation portion 123 may also be a conductive isolation portion.

[0125] In this embodiment, the material of the first isolation portion 121 includes aluminum, silver or copper, the material of the second isolation portion 122 includes titanium or molybdenum, and the material of the third isolation portion 123 includes molybdenum or titanium.

[0126] Based on the same invention concept, please refer to Fig.15 An embodiment of the present application also provides an electronic device, which includes an optical sensor 2 and a display panel 1 provided in the present application. The optical sensor 2 is arranged below the first display area AA1 of the display panel 1. The electronic device may include a smart phone, a tablet computer, a vehicle-mounted display device, a smart wearable device, a television, a laptop computer, and other devices with a display function.

[0127] The embodiments of the present application provide a display panel, a method for preparing a display panel, and an electronic device. In the display panel, an isolation structure is provided with an isolation opening and a light-transmitting opening in a first display area and a second display area. Thus, when etching to form the above-mentioned openings, it can be ensured that the etching loading of the two display areas is basically the same, the side wall morphology of the isolation structure in the isolation opening is basically the same, and the overlapping efficiency of the electrode when overlapping the side wall of the isolation structure in the isolation opening in different areas is consistent. Thus, the problem of inconsistent display in different display areas caused by inconsistent overlapping efficiency of the electrode and the isolation structure can be solved, thereby improving the overall display effect of the display panel.

[0128] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that: The display panel includes a first display area and a second display area at least partially surrounding the first display area, and the display panel further includes: substrate; The isolation structure is located on one side of the substrate, and the isolation structure includes an isolation opening and a light-transmitting opening. The isolation opening is distributed in the first display area and the second display area, and the light-transmitting opening is also distributed in the first display area and the second display area.

2. The display panel according to claim 1, wherein: The density difference between the distribution density of the isolation openings in the first display area and the distribution density of the isolation openings in the second display area is within 10%; The difference between the distribution density of the light-transmitting openings in the first display area and the distribution density of the light-transmitting openings in the second display area is within 10%; Preferably, the distribution density of the isolation openings in the first display area is the same as the distribution density of the isolation openings in the second display area; Preferably, the distribution density of the light-transmitting openings in the first display area is the same as the distribution density of the light-transmitting openings in the second display area; Preferably, the orthographic projection of the isolation opening on the substrate does not overlap with the orthographic projection of the light-transmitting opening on the substrate; Preferably, the first display area includes an optical sensing area.

3. The display panel according to claim 2, wherein: The display panel further includes: The array wiring layer is located between the substrate and the isolation structure, wherein in a direction away from the substrate, the array wiring layer includes a plurality of conductive layers and an insulating layer located between adjacent conductive layers.

4. The display panel according to claim 3, wherein: The display panel further includes: A shielding layer, located on a side of the isolation structure facing the array wiring layer; The shielding layer is at least located in the second display area, and the orthographic projection of the shielding layer on the substrate at least covers the orthographic projection of the light-transmitting opening in the second display area on the substrate; Preferably, an orthographic projection of the shielding layer on the substrate does not overlap with an orthographic projection of the isolation opening on the substrate.

5. The display panel according to claim 4, wherein: The material of the shielding layer includes a transparent conductive material; Preferably, the shielding layer is located in the first display area and the second display area, and the orthographic projection of the shielding layer on the substrate covers the orthographic projection of the light-transmitting opening on the substrate; Preferably, the shielding layers covering different light-transmitting openings are connected to each other; Preferably, the material of the shielding layer includes indium tin oxide, indium zinc oxide, indium gallium zinc oxide or indium tin zinc oxide.

6. The display panel according to claim 3, wherein: The display panel further includes: A shielding layer, wherein the shielding layer is formed by a conductive layer on a side of the array wiring layer away from the substrate; Preferably, in a direction away from the substrate and when the array wiring layer comprises a first conductive layer, a second conductive layer, a third conductive layer and a fourth conductive layer stacked in sequence, the shielding layer is formed by the fourth conductive layer; or, When the array wiring layer includes a first conductive layer, a second conductive layer, a third conductive layer, a fourth conductive layer and a fifth conductive layer stacked in sequence in a direction away from the substrate, the shielding layer is formed by the fifth conductive layer.

7. The display panel according to claim 6, wherein: The shielding layer is located in the second display area, The orthographic projection of the shielding layer on the substrate covers the orthographic projection of the light-transmitting opening in the second display area on the substrate; Preferably, the orthographic projection of the shielding layer on the substrate does not overlap with the orthographic projection of the isolation opening on the substrate; Preferably, the shielding layers covering different light-transmitting openings are connected to each other.

8. The display panel according to claim 6, wherein: The shielding layer includes a plurality of conductive films, wherein the shielding layer includes a first conductive film, a second conductive film and a third conductive film stacked in sequence; Preferably, the material of the first conductive film is the same as the material of the third conductive film; Preferably, the material of the first conductive film and the material of the third conductive film include titanium or molybdenum, and the material of the second conductive film includes aluminum.

9. The display panel according to any one of claims 4 to 8, characterized in that: The display panel further includes: A touch function layer, located on a side of the isolation structure away from the substrate, wherein the touch function layer includes touch wiring; The array routing layer includes signal routing formed by the conductive layer; The shielding layer is located between the touch control wiring and the signal wiring, and is used to shield the signal crosstalk between the touch control wiring and the signal wiring; Preferably, in the first display area, an orthographic projection of the touch-control trace on the substrate does not overlap with an orthographic projection of the light-transmitting opening on the substrate.

10. The display panel according to claim 9, wherein: The array wiring layer includes a power signal wiring, and the shielding layer is connected to the power signal wiring; Alternatively, the array wiring layer further includes a ground wiring, and the shielding layer is connected to the ground wiring.

11. The display panel according to claim 9, wherein: The display panel further comprises a pixel defining layer, wherein the pixel defining layer is located on the substrate, and the isolation structure is located on a side of the pixel defining layer away from the substrate; The pixel defining layer comprises a pixel opening, wherein an orthographic projection of the pixel opening on the substrate is located within an orthographic projection of the isolation opening on the substrate; Preferably, the pixel defining layer is an inorganic pixel defining layer; Preferably, the pixel defining layer is a single-layer structure of silicon oxide or silicon nitride, or a stacked-layer structure formed alternately of silicon oxide and silicon nitride.

12. The display panel according to claim 11, wherein: The display panel further comprises a light emitting device, at least part of which is located in the pixel opening, and in a direction away from the substrate, the light emitting device comprises a first electrode, a light emitting material layer and a second electrode which are stacked; wherein the second electrode overlaps the isolation structure; The first electrode is disposed on a side of the pixel definition layer close to the substrate, and at least a portion of the first electrode is exposed from the pixel opening; The first electrode is insulated from the shielding layer; Preferably, the orthographic projection of the light emitting device on the substrate does not overlap with the orthographic projection of the light-transmitting opening on the substrate; Preferably, the shielding layer is provided in the same layer as the first electrode, and the shielding layer is insulated from the first electrode.

13. The display panel according to claim 12, wherein: The isolation structure comprises a first isolation portion and a second isolation portion which are stacked, wherein the second isolation portion is arranged on a side of the first isolation portion away from the substrate, and an orthographic projection of the first isolation portion on the substrate is located within an orthographic projection of the second isolation portion on the substrate; Preferably, the first isolating portion is a conductive isolating portion, and the first electrode overlaps the first isolating portion; Preferably, the isolation structure further comprises a third isolation portion, and in a direction away from the substrate, the third isolation portion, the first isolation portion and the second isolation portion are stacked in sequence, and the orthographic projection of the first isolation portion on the substrate is located within the orthographic projection of the third isolation portion on the substrate; Preferably, the orthographic projection of the third isolation portion on the substrate is located within the orthographic projection of the second isolation portion on the substrate; Preferably, the third isolation portion is a conductive isolation portion, and the first electrode is also overlapped with the third isolation portion; Preferably, the material of the first isolation portion includes aluminum, silver or copper, the material of the second isolation portion includes titanium or molybdenum, and the material of the third isolation portion includes molybdenum or titanium.

14. The display panel according to claim 12, wherein: The display panel further includes a first encapsulation layer, the first encapsulation layer includes a plurality of encapsulation units, and the encapsulation units are used to encapsulate the light-emitting device in the isolation opening; Preferably, the display panel further comprises a second encapsulation layer, the second encapsulation layer is located on a side of the encapsulation unit away from the substrate, and the second encapsulation layer at least covers the encapsulation unit; Preferably, the second encapsulation layer fills the isolation opening and the light-transmitting opening, and the second encapsulation layer comprises a flat surface on a side away from the substrate; Preferably, the display panel further comprises a third encapsulation layer, and the third encapsulation layer is located on a side of the second encapsulation layer away from the substrate; Preferably, the first encapsulation layer and the third encapsulation layer are inorganic encapsulation layers, and the second encapsulation layer is an organic encapsulation layer.

15. A display panel, characterized in that: The display panel includes a first display area and a second display area at least partially surrounding the first display area, and the display panel further includes: substrate; An isolation structure, located at one side of the substrate, the isolation structure comprising an isolation opening and a light-transmitting opening, the isolation opening is distributed in the first display area and the second display area, and the light-transmitting opening is also distributed in the first display area and the second display area; In a direction away from the substrate, the isolation structure includes a first isolation portion and a second isolation portion which are stacked, wherein the second isolation portion extends toward the corresponding isolation opening or the corresponding light-transmitting opening relative to the first isolation portion; In the first display area, the second isolation portion has a first extension length relative to the first isolation portion; in the second display area, the second isolation portion has a second extension length relative to the first isolation portion; A difference between the first extended length and the second extended length is less than 10% of either.

16. The display panel according to claim 15, wherein: The first extended length and the second extended length are equal.

17. An electronic device, characterized in that: The electronic device comprises an optical sensor and a display panel according to any one of claims 1 to 16, wherein the optical sensor is correspondingly arranged below a first display area in the display panel.

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