Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a substrate, a display function layer, a touch control structure and a light-transmitting shielding layer, the display function layer comprises a plurality of light-emitting devices and a plurality of light-transmitting openings which are arranged on the substrate, and the light-transmitting openings are arranged in the first area and located in gaps of the light-emitting devices; the touch structure is located on the side, away from the substrate, of the display function layer and comprises a touch electrode. The light-transmitting shielding layer is located between the touch structure and the substrate, and the orthographic projection of the light-transmitting opening on the substrate and the orthographic projection of the shielding layer on the substrate are at least partially overlapped. In the display panel, circuits in a touch electrode and a substrate are isolated by a shielding layer in an area where a light-transmitting opening is located, so that mutual interference of driving signals between the circuits of the touch electrode and the substrate is eliminated.

Description

Technical Field

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

[0002] Organic Light-Emitting Diode (OLED) is an organic thin film electroluminescent device. It has attracted great attention and is widely used in electronic display products due to its advantages such as simple preparation process, low cost, low power consumption, high brightness, wide viewing angle, high contrast and flexible display.

[0003] However, current electronic display products are limited by their own structural design, and it is difficult to have both good touch and display functions when applied to scenarios such as under-screen recognition and transparent display. Summary of the invention

[0004] In a first aspect, the present disclosure provides a display panel, which includes a substrate and a display function layer, a touch structure and a light-transmitting shielding layer located on the substrate. The display function layer includes a plurality of light-emitting devices and a plurality of light-transmitting openings arranged on the substrate, wherein the light-transmitting openings are arranged in a first region and are located at the gaps between the light-emitting devices; the touch structure is located on a side of the display function layer away from the substrate and includes a touch electrode; the light-transmitting shielding layer is located between the touch structure and the substrate, and the orthographic projection of the light-transmitting opening on the substrate at least partially overlaps with the orthographic projection of the light-transmitting shielding layer on the substrate.

[0005] In the above scheme, in the area where the light-transmitting opening is located, the touch electrode and the circuit in the substrate (such as the circuit structure in the driving circuit layer mentioned below) are isolated by the light-transmitting shielding layer, thereby eliminating the mutual interference of the driving signals between the touch electrode and the circuit of the substrate.

[0006] In a specific embodiment of the first aspect of the present disclosure, the orthographic projection of the light-transmitting opening on the substrate is located within the orthographic projection of the light-transmitting shielding layer on the substrate.

[0007] In a specific embodiment of the first aspect of the present disclosure, the gap between adjacent light-emitting devices is a first gap, the gap between the light-emitting device and the light-transmitting opening adjacent thereto is a second gap, the touch electrode is a grid electrode, and the orthographic projections of the grid lines of the grid electrode on the substrate are respectively located within the orthographic projections of the first gap and the second gap on the substrate, that is, the orthographic projections of some of the grid lines of the grid electrode on the substrate are located within the orthographic projections of the gaps of the light-emitting device on the substrate, and the orthographic projections of another part of the grid lines of the grid electrode on the substrate are located within the orthographic projections of the gaps between the light-emitting device and the light-transmitting opening on the substrate. This design can increase the light transmittance of the touch electrode, and allows the material of the touch electrode to use a high-conductivity material such as metal.

[0008] For example, optionally, the light-transmitting shielding layer includes a transparent conductive material and is a transparent electrode, so as not to block the light emitted by the light-emitting device.

[0009] For example, the material of the light-transmitting shielding layer includes at least one of indium tin oxide, indium gallium oxide, and indium zinc oxide.

[0010] In a specific implementation of the first aspect of the present disclosure, the display panel may further include an isolation structure, which is located on the substrate and defines a light-transmitting opening and a plurality of isolation openings, and the light-emitting devices are respectively confined in the isolation openings.

[0011] In the above scheme, the application of the isolation structure can make it possible that the mask plate is not required during the preparation process of the light-emitting device, so there is no need to consider the alignment accuracy of the preparation process, which is beneficial to reducing the gap size of the light-emitting device to improve the pixel PPI of the display panel; in addition, in the first area, by providing a light-transmitting opening in the isolation structure, the area of ​​the display panel where the light-transmitting opening is provided can be transparent, so that the first area of ​​the display panel can realize transparent display or under-screen recognition functions such as fingerprint recognition, under-screen camera, etc.

[0012] In a specific embodiment of the first aspect of the present disclosure, the light-emitting device includes a first electrode, a light-emitting functional layer, and a second electrode stacked in sequence on a substrate, the light-emitting functional layer and the second electrode of the light-emitting device are located in corresponding isolation openings, the isolation structure includes a support portion and a crown portion stacked in sequence on the substrate, the orthographic projection of the support portion on the substrate is located within the orthographic projection of the crown portion on the substrate, the support portion is a conductive structure, and the second electrode of the light-emitting device is connected to the support portion.

[0013] In the above scheme, at the gap between adjacent light-emitting devices, the isolation structure is generally wide at the top and narrow at the bottom. In this way, during the preparation process of the light-emitting device, the isolation effect of the isolation structure on the light-emitting functional layer can be increased to reduce the current crosstalk problem between adjacent light-emitting devices.

[0014] In a specific embodiment of the first aspect of the present disclosure, the display function layer further includes a pixel defining layer, which is located on a side of the substrate close to the isolation structure and includes a plurality of pixel openings corresponding to the isolation openings. The pixel openings limit the light-emitting device and expose the first electrode, and the pixel openings correspond to the isolation openings, respectively, and the pixel openings are connected to the corresponding isolation openings.

[0015] In a specific embodiment of the first aspect of the present disclosure, the light-transmitting shielding layer is located on a side of the pixel defining layer close to the isolation structure and is connected to the supporting portion.

[0016] In another specific embodiment of the first aspect of the present disclosure, the light-transmitting shielding layer support portion is close to one side of the crown portion, that is, located between the support portion and the crown portion, and connected to the support portion. For example, further, the orthographic projection of the light-transmitting shielding layer on the substrate coincides with the orthographic projection of the support portion on the substrate.

[0017] In another specific embodiment of the first aspect of the present disclosure, the light-transmitting shielding layer includes a plurality of shielding units, and the shielding units are located within the light-transmitting openings and cover at least a portion of the side wall of the supporting portion.

[0018] In another specific embodiment of the first aspect of the present disclosure, the light-transmitting shielding layer covers the display functional layer and the light-transmitting opening, and the light-transmitting shielding layer is located on the side of the isolation structure facing away from the substrate and contacts the surface of the isolation structure facing away from the substrate, and the crown is a conductive structure.

[0019] In another specific embodiment of the first aspect of the present disclosure, the display panel further includes a first encapsulation layer, a second encapsulation layer, and a third encapsulation layer stacked in sequence on the display function layer, the touch structure is located on the side of the third encapsulation layer away from the substrate, the first encapsulation layer and the third encapsulation layer are inorganic layers, and the second encapsulation layer is an organic layer. The light-transmitting shielding layer is located between the first encapsulation layer and the second encapsulation layer, the light-transmitting shielding layer is in contact with the isolation structure, and the isolation structure is a conductive structure; or, the light-transmitting shielding layer is located between the second encapsulation layer and the third encapsulation layer, a through hole is provided in the second encapsulation layer, the light-transmitting shielding layer is connected to the isolation structure through the through hole, and the isolation structure is a conductive structure.

[0020] For example, the display panel includes a display area, the light-transmitting shielding layer and the isolation structure are located within the display area, and the through hole is located within the display area; or, the display panel includes a display area and a non-display area located on at least one side of the display area, the light-transmitting shielding layer and the isolation structure extend from the display area to the non-display area, and the through hole is located within the non-display area.

[0021] In another specific embodiment of the first aspect of the present disclosure, the display panel also includes a first encapsulation layer, a second encapsulation layer, a third encapsulation layer and a buffer layer stacked in sequence on the display function layer, and the touch structure is located on the side of the buffer layer away from the substrate, wherein the first encapsulation layer, the third encapsulation layer and the buffer layer are inorganic layers, the second encapsulation layer is an organic layer, the light-transmitting shielding layer is located between the buffer layer and the touch structure, through holes are provided in the second encapsulation layer and the buffer layer, the light-transmitting shielding layer is connected to the isolation structure through the through holes, and the isolation structure is a conductive structure.

[0022] In a specific implementation of the first aspect of the present disclosure, the entire display area is the first area. Under this design, the display panel can be applied to the transparent display scenario.

[0023] In another specific implementation of the first aspect of the present disclosure, the display panel includes a display area, the display area includes a first area and a second area, the second area is located on at least one side of the first area, and the light-transmitting opening is located in the first area. Under this design, the display panel can be applied to scenarios such as fingerprint recognition and under-screen camera.

[0024] A second aspect of the present disclosure provides a display device, which may include the display panel in any of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of a planar structure of a display panel provided in one embodiment of the present disclosure shows a display substrate of the display panel.

[0026] Figure 2 for Figure 1 The shown figure shows an enlarged view of the S1 region of a display panel under one design.

[0027] Figure 3 for Figure 2 The shown display panel is a cross-sectional view along M1 - N1 in one design.

[0028] Figure 4 for Figure 2 The display panel is shown in a cross-sectional view along M2 - N2 .

[0029] Figure 5A FIG. 5 is a schematic diagram of a planar structure of a touch electrode in a display panel provided in an embodiment of the present disclosure, wherein the S2 area in FIG. 5 corresponds to Figure 1 The S1 region in the

[0030] Figure 5B for Figure 5A The touch electrode is shown in a cross-sectional view along M3 - N3 .

[0031] Fig. 6AFIG. 5 is a schematic diagram of a planar structure of a touch electrode in a display panel provided in an embodiment of the present disclosure, wherein the S3 area in FIG. 5 corresponds to Figure 1 The S1 region in the

[0032] Figure 6B for Fig. 6A The touch electrode is shown in a cross-sectional view along M4-N4.

[0033] Figure 7 for Figure 2 The cross-sectional view of the display panel along M1 - N1 in another design is shown.

[0034] Figure 8 for Figure 2 The cross-sectional view of the display panel along M1 - N1 in another design is shown.

[0035] Fig. 9 for Figure 2 The cross-sectional view of the display panel along M1 - N1 in another design is shown.

[0036] Fig.10 for Figure 2 The cross-sectional view of the display panel along M1 - N1 in another design is shown.

[0037] Fig.11 for Figure 2 The cross-sectional view of the display panel along M1 - N1 in another design is shown.

[0038] FIG. 12A to FIG. 12E A process diagram of a method for preparing a display panel provided in one embodiment of the present disclosure. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this specification.

[0040] The display panel can have a touch function while taking into account functions such as transparent display and under-screen recognition (fingerprint recognition, under-screen camera). To this end, a light-transmitting area will be divided in the display panel, and light-transmitting holes will be set in the gaps between the sub-pixels in the light-transmitting area to achieve light transmission. However, in the area where the light-transmitting holes are located, signal interference may occur between the conductive structure used to achieve the touch function (such as the touch electrode described below) and the underlying driving circuit (such as the driving circuit in the substrate described below), thereby resulting in poor touch or display function.

[0041] At least one embodiment of the present disclosure provides a display panel and a display device to at least solve the above-mentioned technical problems. The display panel includes a display area, the display area includes a first area, and the display panel includes a substrate and a display function layer, a touch structure and a light-transmitting shielding layer located on the substrate. The display function layer includes a plurality of light-emitting devices and a plurality of light-transmitting openings arranged on the substrate, the light-transmitting openings are arranged in the first area and are located in the gaps between the light-emitting devices; the touch structure is located on the side of the display function layer away from the substrate and includes a touch electrode; the light-transmitting shielding layer is located between the touch structure and the substrate, and the orthographic projection of the light-transmitting opening on the substrate at least partially overlaps with the orthographic projection of the light-transmitting shielding layer on the substrate. In the display panel, in the area where the light-transmitting opening is located, the touch electrode and the circuit in the substrate are isolated by the light-transmitting shielding layer, thereby eliminating the mutual interference of the driving signals between the touch electrode and the circuit in the substrate.

[0042] The structure of the display panel in at least one embodiment of the present disclosure is described in detail below in conjunction with the accompanying drawings. In addition, in these drawings, a spatial rectangular coordinate system is established with the substrate (or display substrate) in the display panel as a reference to intuitively present the positional relationship of each component in the display panel. In this spatial rectangular coordinate system, the X-axis and the Y-axis are parallel to the surface where the substrate is located, and the Z-axis is perpendicular to the surface where the substrate is located.

[0043] like Figures 1 to 4 As shown, the display panel 10 includes a display area 11 and a non-display area 12 surrounding the display area 11, and the display area 11 includes a first area 13, and sub-pixels emitting light of different colors, such as R, G, and B, are arranged in the display area 11. A light-transmitting opening 201 is provided in the first area 13, and the setting of the light-transmitting opening 201 enables the first area 13 to have a certain light transmittance for under-screen recognition, video recording or transparent display. It should be noted that in some embodiments of the present disclosure, some wiring in the non-display area 12 can be arranged in the display area 11, so that the non-display area 12 can be designed as a single-sided frame.

[0044] The physical structure of the display panel 10 includes a substrate 100 and a display function layer 200 , a touch control structure 20 and a light-transmitting shielding layer 30 disposed on the substrate 100 .

[0045] In the embodiments of the present disclosure, a circuit structure is provided in the substrate to drive a functional structure for realizing display or other functions (such as fingerprint recognition). These functional structures can be designed according to the application requirements of the display panel actually produced, and are not limited here. Accordingly, the specific design and type of the circuit structure in the substrate are not limited. For example, in at least one embodiment of the present disclosure, the substrate 100 may include a substrate and a driving circuit layer located on the substrate, the driving circuit layer includes a plurality of pixel driving circuits located in the display area, and the display function layer is located on the driving circuit layer. For example, the pixel driving circuit may include a plurality of transistors TFT, capacitors, etc., for example, formed in various forms such as 2T1C (i.e., 2 transistors (TFT) and 1 capacitor (C)), 3T1C or 7T1C. The pixel driving circuit is connected to the light-emitting device 200 to control the switching state and light brightness of the light-emitting device 220.

[0046] For example, the display function layer 200 includes a plurality of light-emitting devices 220 and a plurality of light-transmitting openings 201 arranged on the substrate 100. The light-transmitting openings 201 are arranged in the first area 13 and are located at the gaps between the light-emitting devices 200. The light-emitting devices 220 are physical light-emitting structures of sub-pixels R, G, and B, that is, light-transmitting openings 201 for transmitting light are provided at the gaps between the light-emitting devices 220.

[0047] For example, the touch control structure 20 is located on a side of the display function layer 200 away from the substrate 100 and includes a touch control electrode 400 .

[0048] For example, the light-transmitting shielding layer 30 is located between the touch-sensing structure 20 and the substrate 100 , and the orthographic projection of the light-transmitting opening 201 on the substrate 100 at least partially overlaps with the orthographic projection of the light-transmitting shielding layer 30 on the substrate 100 .

[0049] For example, the material of the light-transmitting shielding layer 30 is a transparent conductive material, such as ITO (indium tin oxide), IGO (indium gallium oxide), IZO (indium zinc oxide), etc.

[0050] In at least one embodiment of the present disclosure, Figure 3 As shown, the orthographic projection of the light-transmitting opening 201 on the substrate 100 is located within the orthographic projection of the light-transmitting shielding layer 30 on the substrate 100 , so that the shielding effect of the light-transmitting shielding layer 30 on the driving signal between the touch electrode 400 and the driving circuit layer can be further improved.

[0051] In at least one embodiment of the present disclosure, it is possible to refer to Figure 2 and 3, the gap between adjacent light emitting devices 220 (e.g., the corresponding sub-pixels R and G) is a first gap 1, the gap between the light emitting device 220 and the adjacent light-transmitting opening 201 is a second gap 2, the touch electrode 400 can be designed as a grid electrode, and the orthographic projections of the grid lines of the grid electrode on the substrate 100 are respectively located within the orthographic projections of the first gap 1 and the second gap 2 on the substrate 100, that is, in the touch electrode 400, the orthographic projections of a portion of the grid lines 21 on the display substrate 100 are located in the gap between the sub-pixels, and the orthographic projections of the grid lines 21 of another portion of the grid electrode on the substrate 100 are located within the orthographic projections of the gap between the sub-pixel and the light-transmitting opening 201 on the substrate 100. This design can increase the light transmittance of the touch electrode 400, and allows the material of the touch electrode 400 to use a high-conductivity material such as metal.

[0052] In at least one embodiment of the present disclosure, Figure 3 and Figure 4 As shown, the display panel may further include an isolation structure 210, which is located on the substrate 100 and defines a light-transmitting opening 201 and a plurality of isolation openings 202, and the light-emitting devices 220 are respectively limited in the isolation openings 202. In this way, the application of the isolation structure 210 can make it possible to eliminate the need for a mask plate in the preparation process of the light-emitting device 220, so that there is no need to consider the alignment accuracy of the preparation process, which is conducive to reducing the gap size of the light-emitting device 220, so as to improve the pixel PPI of the display panel 10 (this principle can be seen in FIG. 12A to FIG. 12E In addition, in the first area 13, by providing a light-transmitting opening 201 in the isolation structure 210, the area of ​​the display panel 10 provided with the light-transmitting opening 201 can be made light-transmitting, so that the first area 13 of the display panel 10 can realize transparent display or under-screen recognition functions such as fingerprint recognition, under-screen camera, etc.

[0053] It should be noted that the light-transmitting shielding layer only needs to cover the first area and can separate the driving circuit layer and the touch electrode. Under this premise, there is no further restriction on the specific position of the light-transmitting shielding layer. The following briefly describes the specific arrangement of structures such as the isolation structure, the touch electrode, and the light-emitting device in the display panel to illustrate several specific arrangement methods of the light-transmitting shielding layer.

[0054] For example, the light emitting device 220 includes a first electrode 221, a light emitting functional layer 223, and a second electrode 222 sequentially stacked on the substrate 100. For example, the first electrode 221 may be an anode, and the second electrode 222 may be a cathode.

[0055] For example, the light-emitting functional layer 223 may include a first common layer 2231, a light-emitting layer 2232, and a second common layer 2233, and the first common layer 2231, the light-emitting layer 2232, and the second common layer 2233 are sequentially stacked on the first electrode 221. The first common layer 2231 may include a hole injection layer, a hole transport layer, an electron blocking layer, etc. The second common layer 2232 may include an electron injection layer, an electron transport layer, a hole blocking layer, etc. The isolation structure 210 is provided so that the first common layer 221 (the main film layer causing current crosstalk) of each light-emitting device 220 is electrically disconnected from each other.

[0056] For example, the isolation structure 210 includes a support portion 211 and a crown portion 212 sequentially stacked on the substrate 100, the orthographic projection of the support portion 211 on the substrate 100 is located within the orthographic projection of the crown portion 212 on the substrate 100, the support portion 211 is a conductive structure, the light-emitting functional layer 223 and the second electrode 222 of the light-emitting device 220 are located in the corresponding isolation opening 202, and the second electrode 222 of the light-emitting device 220 is located in the corresponding isolation opening 202 and connected to the support portion 211. In this way, at the gap between adjacent light-emitting devices 220, the isolation structure 210 as a whole is generally wide at the top and narrow at the bottom. In this way, during the preparation process of the light-emitting device 220, the isolation structure 210 can increase the isolation effect of the light-emitting functional layer 223 (the first common layer 2231 included therein, the first common layer 2231 is the main film layer causing current crosstalk) to reduce the current crosstalk problem between adjacent light-emitting devices 220.

[0057] It should be noted that the material of the second electrode 222 can be a metal material. The smaller the thickness of the second electrode 222, the higher its transmittance, but the higher its resistivity. If the thickness of the second electrode 222 is too small, when the isolation structure 210 is not set, the voltage drop of the second electrode 222 (the common electrode at this time) will be too large. In the embodiment of the present disclosure, the second electrode 222 is connected to the conductive support portion 211, which can remove the thickness restriction of the second electrode 222, so that the second electrode 222 has a smaller thickness to have a higher transmittance.

[0058] In at least one embodiment of the present disclosure, the support portion 211 may be a metal conductive structure. The metal material has a high conductivity and can reduce the voltage drop when driving the cathode. Accordingly, the metal material can only be light-transmissive when the thickness is extremely thin (e.g., tens of nanometers), and the isolation structure 220 requires a certain thickness to isolate the light-emitting functional layer 223 (the first common layer 2231 included therein). Accordingly, the support portion 211 in the isolation structure 220 is almost opaque. Therefore, the isolation structure 210 can only be light-transmissive by providing the light-transmitting opening 201.

[0059] In at least one embodiment of the present disclosure, it is possible to refer to Figure 3 and Figure 4 The display function layer 223 may further include a pixel defining layer 213, which is located on a side of the substrate 100 close to the isolation structure 210, that is, between the substrate 100 and the isolation structure 210, and the pixel defining layer 213 includes a plurality of pixel openings 203 corresponding to the isolation openings 202. The pixel openings 203 limit the light-emitting device 220 and expose the first electrode 221, and the pixel openings 203 correspond to the isolation openings 202, respectively, and the pixel openings 203 are connected to the corresponding isolation openings 202.

[0060] In the embodiments of the present disclosure, there is no limitation on the specific structure of the touch electrode, which can be designed according to the actual process requirements. The following describes different designs of the touch electrode through different embodiments, as follows.

[0061] In at least one embodiment of the present disclosure, Figure 5A and Figure 5B As shown, the touch electrode 400 includes a plurality of parallel first electrode strips 410 and a plurality of parallel second electrode strips 420. The first electrode strips 410 and the second electrode strips 420 are spaced apart from each other and cross each other to form a touch unit at the intersection, and the first electrode strips 410 and the second electrode strips 420 are arranged as grid electrodes.

[0062] For example, in some embodiments of the present disclosure, Figure 5A and Figure 5B As shown, the first electrode strip 410 is located between the second electrode strip 420 and the isolation structure 210. Macroscopically, the area where the first electrode strip 410 and the second electrode strip 420 cross and overlap is the area where the touch control unit is located, and in this overlapping area, the first electrode strip 410 and the second electrode strip 420 are both transparent. The first electrode strip 410 and the second electrode strip 420 may be separated by an insulating layer 430.

[0063] For example, in some other embodiments of the present disclosure, Fig. 6A and Figure 6BAs shown, the first electrode strip 410 includes a plurality of spaced first electrode blocks 411 and a plurality of first connecting portions 412, and the plurality of first electrode blocks 411 of the same first electrode strip 410 are connected through the first connecting portions 412, the second electrode strip 420 includes a plurality of second electrode blocks 421 and a plurality of second connecting portions 422, and the plurality of second electrode blocks 421 of the same second electrode strip 420 are connected through the second connecting portions 422, the first connecting portions 412 and the second connecting portions 422 intersect and are spaced from each other, wherein the first electrode blocks 411, the first connecting portions 412 and the second electrode strip 420 are in the same layer, and the second connecting portions 422 are located between the first connecting portions 412 and the isolation structure 210, or the second connecting portions 422 are located on the side of the first connecting portions 412 away from the isolation structure 210. The touch electrode 400 under this design has high light transmittance, and the alignment accuracy of the mesh with the light-transmitting opening 201 and the isolation opening 202 is high, so that the light transmittance of the first region 13 can be improved. In this design, the main parts of the first electrode strip 410 and the second electrode strip 420 are designed in the same layer, so there is no need to consider the mesh alignment problem of the two, which is conducive to improving the light transmittance of the touch electrode 400. For example, the second connection part 422 and the first connection part 412 can be separated by an insulating layer 430.

[0064] In at least one embodiment of the present disclosure, it is possible to refer to Figure 3 and Figure 4 , an encapsulation layer 300 may be disposed between the display function layer 200 and the touch control structure 20. For example, the encapsulation layer 300 may include a first encapsulation layer 310, a second encapsulation layer 320, and a third encapsulation layer 330 sequentially stacked on the display function layer 200, the second encapsulation layer 320 is located between the first encapsulation layer 310 and the third encapsulation layer 330, the first encapsulation layer 310 and the third encapsulation layer 330 are inorganic layers, the inorganic layers have high density to isolate water and oxygen, and the second encapsulation layer 320 is an organic layer, so as to have a large thickness to flatten the surface of the display panel, so as to facilitate the preparation of the touch control electrode 400 on the encapsulation layer 300.

[0065] It should be noted that the first encapsulation layer 310 can be used to protect the light emitting device 220 during the preparation process of the light emitting device 220, that is, during the process of the light emitting device 220, the first encapsulation layer 310 will be formed simultaneously. For details, please refer to the following about FIG. 12A to FIG. 12E The relevant descriptions in the illustrated embodiments are not repeated here.

[0066] Several configurations of the light-transmitting shielding layer are described below.

[0067] In some embodiments of the present disclosure, Figure 7As shown, the light-transmitting shielding layer 30 is located on a side of the pixel defining layer 213 close to the isolation structure 210, that is, between the pixel defining layer 213 and the isolation structure 210, and connected to the support portion 211. For example, under this design, the light-transmitting shielding layer 30 can also be configured as a grid, and the meshes of the light-transmitting shielding layer 30 correspond to the isolation openings 202 respectively.

[0068] In other embodiments of the present disclosure, Figure 8 As shown, the light-transmitting shielding layer 30 is located on the side of the support portion 211 close to the crown portion 212, that is, located between the support portion 211 and the crown portion 212, and connected to the support portion 211, that is, the light-transmitting shielding layer 30 is located inside the isolation structure 210. For example, further, the orthographic projection of the light-transmitting shielding layer 30 on the substrate 100 coincides with the orthographic projection of the support portion 211 on the substrate 100, that is, the light-transmitting shielding layer 30 can also be set to a grid shape, and the mesh of the light-transmitting shielding layer 30 corresponds to the isolation opening 202 respectively. Under this design, the crown portion 212 is not limited to a conductive structure, so that the material restriction of the crown portion 212 can be lifted, so that the crown portion 212 has a larger size to increase the isolation effect on the light-emitting functional layer 223.

[0069] In some other embodiments of the present disclosure, the light-transmitting shielding layer includes a plurality of shielding units, which are located within the light-transmitting opening and cover at least a portion of the side wall of the supporting portion. Figure 8 The light-transmitting shielding layer 30 shown is modified so that only a portion of the light-transmitting shielding layer 30 located in the light-transmitting opening 201 is retained, and this portion is equivalent to a shielding unit.

[0070] In other embodiments of the present disclosure, Fig. 9 As shown, the light-transmitting shielding layer 30 covers the display area, and the light-transmitting shielding layer 30 is located on the side of the isolation structure away from the substrate and contacts the surface of the isolation structure away from the substrate, and the crown 212 is a conductive structure.

[0071] In other embodiments of the present disclosure, Fig. 9 As shown, the light-transmitting shielding layer 30 covers the display area, is located between the first encapsulation layer 310 and the second encapsulation layer 320, is in contact with the isolation structure 210, and the isolation structure 210 is a conductive structure.

[0072] In some other embodiments of the present disclosure, please refer to Figure 3 and Figure 4 The light-transmitting shielding layer 30 covers the display area, and the light-transmitting shielding layer 30 is located between the second encapsulation layer 320 and the third encapsulation layer 330. A through hole is provided in the second encapsulation layer 320, and the light-transmitting shielding layer 30 is connected to the isolation structure 210 through the through hole, and the isolation structure 210 is a conductive structure.

[0073] In other embodiments of the present disclosure, Fig.10 As shown, a buffer layer 440 may be provided between the encapsulation layer 300 and the touch structure 20 to prevent the preparation of the touch electrode 400 from damaging the encapsulation layer 300. For example, further, the light-transmitting shielding layer 30 covers the display area, the light-transmitting shielding layer 30 is located between the buffer layer 440 and the touch structure 20, through holes are provided in the second encapsulation layer 320 and the buffer layer 440, the light-transmitting shielding layer 30 is connected to the isolation structure 210 through the through holes, and the isolation structure 210 is a conductive structure.

[0074] It should be noted that the through hole can be located in the display area or outside the display area, that is, the light-transmitting shielding layer 30 and the isolation structure 210 can be connected within the display area, or the light-transmitting shielding layer 30 and the isolation structure 210 can be connected in the non-display area outside the display area. In this case, the light-transmitting shielding layer 30 and the isolation structure 210 both extend into the non-display area. It should be noted that in the non-display area, a gentle slope is formed at the edge of the second encapsulation layer 320 and the third encapsulation layer 330 to facilitate the arrangement of the signal line, and the portion of the light-transmitting shielding layer 30 located in this area can be designed as a signal line to extend from the gentle slope to the non-display area to connect with the isolation structure 210.

[0075] For example, Fig.11 As shown, the display panel may further include structures such as an optical film 500 , a cover plate 600 , etc. These structures may be located on a side of the touch structure 20 away from the display function layer 200 .

[0076] Next, combine FIG. 12A to FIG. 12E right Figure 3 The preparation process of the display panel shown is described to intuitively demonstrate the principle that the isolation structure can increase the pixel arrangement density PPI.

[0077] like Fig. 12A As shown, a substrate 100 is provided and a first electrode 221 arranged in an array is formed on the substrate 100; an insulating material film layer (for example, an inorganic material film layer) is deposited on the substrate 100 on which the first electrode is formed; a support portion 211 and a crown portion 212 are formed on the display panel, wherein a light-transmitting opening 201 and an isolation opening 202 are formed; a composition process is performed on the insulating material film layer to form a pixel defining layer 213 (the plane shape is a grid shape), the pixel defining layer 213 includes a pixel opening 203 and covers the gaps between adjacent first electrodes, so that the plane shape of the pixel defining layer 213 is a grid shape.

[0078] In an embodiment of the present disclosure, the patterning process may be a photolithography patterning process, which may include, for example, coating a photoresist on a structure layer to be patterned, exposing the photoresist using a mask, developing the exposed photoresist to obtain a photoresist pattern, etching the structure layer using the photoresist pattern (optionally wet etching or dry etching), and then optionally removing the photoresist pattern. It should be noted that, in the case where the material of the structure layer (such as the photoresist pattern 700 described below) includes photoresist, the structure layer may be directly exposed through a mask to form a desired pattern.

[0079] like Fig. 12B As shown, the light-emitting functional layer and the second electrode are evaporated on the substrate 100 to form a light-emitting device 220 in each isolation opening 202 of the isolation structure 210. No mask is used in the evaporation in the process, so the evaporated material is also deposited on the crown 212, and is also deposited in the light-transmitting opening 201 and the isolation opening 202. For example, the evaporated light-emitting functional layer can emit red light (G), that is, at this stage, a light-emitting device 220 emitting red light is formed in each light-transmitting opening 201 and the isolation opening 202 of the isolation structure 210.

[0080] like Fig. 12C As shown, a first encapsulation layer 310 is deposited to cover the light-emitting device 200. The first encapsulation layer 310 will cover the entire display area at this stage. A photoresist is formed (e.g., coated) on the first encapsulation layer 310, and then a composition process is performed to form a photoresist pattern 700. The photoresist pattern 700 only covers a portion of the isolation opening 202 of the isolation structure 210 (the isolation opening 202 where the light-emitting device G of the finished display panel is located).

[0081] like Fig.12D As shown, the surface of the display panel is etched using the photoresist pattern 700 as a mask to remove the first encapsulation layer 310 , the second electrode and the light-emitting functional layer covered by the photoresist pattern 700 ; and then the remaining photoresist pattern 700 is removed.

[0082] like Fig.12E As shown, the above steps are repeated to form light emitting devices 220 emitting green light and blue light in other isolation openings 202 , respectively.

[0083] like Figure 3 As shown, after all the light-emitting devices 220 are prepared, a second encapsulation layer 320 is formed on the first encapsulation layer 310, a through hole is formed in the second encapsulation layer 320, and a transparent electrode is formed on the second encapsulation layer 320 as a light-transmitting shielding layer 30, the light-transmitting shielding layer 30 is in contact with the isolation structure 210 through the through hole, and then a third encapsulation layer 330 is formed on the second encapsulation layer 320.

[0084] See again Figure 3 and Figure 4 , a touch electrode layer 400 is prepared on the third encapsulation layer 330 .

[0085] It should be noted that the preparation order of the light-emitting device 220 emitting red light, green light and blue light can be designed according to actual needs, and the embodiments of this announcement do not limit this.

[0086] It should be noted that in some embodiments of the present disclosure, some film layers in the light-emitting functional layer, such as the light-emitting layer, can be prepared by non-evaporation methods such as inkjet printing. The specific method can be selected according to the materials of these film layers. For example, when these film layers are made of polymer materials and are not suitable for evaporation, inkjet printing can be used to prepare them.

[0087] It should be noted that in the embodiments of the present disclosure, there is no restriction on the design area of ​​the first region, and the design can be performed according to the actual process requirements and the application scenario of the display panel.

[0088] For example, in some embodiments of the present disclosure, the entire display area can be designed as the first area 13. Under this design, the display panel can be used in scenes such as transparent display.

[0089] For example, in some other embodiments of the present disclosure, refer to Figure 1 , the display area also includes a second area (an area within the display area 11 and outside the first area 13), the second area is located on at least one side of the first area 13, the first area 13 is a light-transmitting area, and the second area is a non-light-transmitting area. Under this design, the display panel can be used in scenarios such as fingerprint recognition or under-screen camera.

[0090] At least one embodiment of the present disclosure provides a display device, which may include the display panel in the above embodiment. In addition, when the first area is an identification area, the display device may include an identification device, and the orthographic projection of the identification device on the substrate at least partially overlaps with the first area.

[0091] For example, in some embodiments of the present disclosure, the identification device includes at least one fingerprint identification sensor. For example, the fingerprint identification sensor can be arranged on a side of the substrate away from the display function layer, or the fingerprint identification sensor can also be arranged inside the substrate.

[0092] For example, in some other embodiments of the present disclosure, the identification device may be a camera, and the camera is located on a side of the substrate away from the display function layer.

[0093] For example, in the embodiments of the present disclosure, the display device may be any product or component with a display function, such as a television, a digital camera, a mobile phone, a watch, a tablet computer, a laptop computer, a navigator, or the like.

[0094] The above description is only a preferred embodiment of this specification and is not intended to limit this specification. Any modifications, equivalent substitutions, etc. made within the spirit and principles of this specification should be included in the protection scope of this specification.

Claims

1. A display panel, characterized in that: include: substrate; The display function layer comprises a plurality of light emitting devices and a plurality of light-transmitting openings arranged on the substrate, wherein the light-transmitting openings are located at gaps between adjacent light emitting devices; a touch control structure, located on a side of the display function layer away from the substrate, and comprising a touch control electrode; and The light-transmitting shielding layer is located on a side of the touch-control structure close to the display function layer, wherein the orthographic projection of the light-transmitting opening on the substrate is located within the orthographic projection of the light-transmitting shielding layer on the substrate.

2. The display panel according to claim 1, characterized in that: The gap between adjacent light emitting devices is a first gap, the gap between the light emitting device and the adjacent light-transmitting opening is a second gap, and The touch electrode is a grid electrode, and the orthographic projections of the grid lines of the grid electrode on the substrate are respectively located within the orthographic projections of the first gap and the second gap on the substrate; Preferably, the light-transmitting shielding layer comprises a transparent conductive material; Further preferably, the material of the light-transmitting shielding layer includes at least one of indium tin oxide, indium gallium oxide and indium zinc oxide; Preferably, the substrate comprises a driving circuit layer.

3. The display panel according to claim 1 or 2, characterized in that: Also includes: The isolation structure is located on the substrate and defines the light-transmitting opening and a plurality of isolation openings, wherein the light-emitting devices are respectively confined in the isolation openings.

4. The display panel according to claim 3, characterized in that: The light emitting device comprises a first electrode, a light emitting functional layer and a second electrode which are sequentially stacked on the substrate, wherein the light emitting functional layer and the second electrode of the light emitting device are located in the corresponding isolation openings, The isolation structure comprises a support portion and a crown portion sequentially stacked on the base, the orthographic projection of the support portion on the base is located within the orthographic projection of the crown portion on the base, and The support portion is a conductive structure, and the second electrode of the light emitting device is connected to the support portion.

5. The display panel according to claim 4, characterized in that: The display function layer also includes: A pixel defining layer, located on a side of the substrate close to the isolation structure, and comprising a plurality of pixel openings respectively corresponding to the isolation openings; The pixel opening limits the light-emitting device and exposes the first electrode, the pixel opening corresponds to the isolation opening respectively, and the pixel opening is connected to the corresponding isolation opening; Preferably, the light-transmitting shielding layer is located on a side of the pixel defining layer close to the touch structure, and is connected to the supporting portion.

6. The display panel according to claim 4, characterized in that: The light-transmitting shielding layer is located on a side of the supporting portion close to the crown portion and is connected to the supporting portion. Preferably, the orthographic projection of the light-transmitting shielding layer on the substrate coincides with the orthographic projection of the supporting portion on the substrate. or The light-transmitting shielding layer comprises a plurality of shielding units, wherein the shielding units are located within the light-transmitting opening and cover at least a portion of the side wall of the supporting portion; or The light-transmitting shielding layer covers the display function layer and the light-transmitting opening, and the light-transmitting shielding layer is located on a side of the isolation structure away from the substrate and contacts with a surface of the isolation structure away from the substrate, and the crown is a conductive structure.

7. The display panel according to claim 4, characterized in that: It also includes a first encapsulation layer, a second encapsulation layer and a third encapsulation layer stacked in sequence on the display function layer, the touch control structure is located on a side of the third encapsulation layer away from the substrate, wherein the first encapsulation layer and the third encapsulation layer are inorganic layers, and the second encapsulation layer is an organic layer, and The light-transmitting shielding layer covers the display function layer and the light-transmitting opening, the light-transmitting shielding layer is located on a side of the first encapsulation layer close to the second encapsulation layer, the light-transmitting shielding layer is in contact with the isolation structure, and the isolation structure is a conductive structure; or The light-transmitting shielding layer covers the display function layer and the light-transmitting opening, the light-transmitting shielding layer is located on a side of the second encapsulation layer close to the third encapsulation layer, a through hole is provided in the second encapsulation layer, the light-transmitting shielding layer is connected to the isolation structure through the through hole, and the isolation structure is a conductive structure. Preferably, the display panel includes a display area, the light-transmitting shielding layer and the isolation structure are located within the display area, and the through hole is located within the display area; or, the display panel includes a display area and a non-display area located on at least one side of the display area, the light-transmitting shielding layer and the isolation structure extend from the display area to the non-display area, and the through hole is located within the non-display area.

8. The display panel according to claim 3, characterized in that: It also includes a first encapsulation layer, a second encapsulation layer, a third encapsulation layer and a buffer layer stacked in sequence on the display function layer, the touch structure is located on a side of the buffer layer away from the substrate, wherein the first encapsulation layer, the third encapsulation layer and the buffer layer are inorganic layers, the second encapsulation layer is an organic layer, and The light-transmitting shielding layer covers the display function layer and the light-transmitting opening, and is located on a side of the buffer layer close to the touch structure. Through holes are provided in the second encapsulation layer and the buffer layer, and the light-transmitting shielding layer is connected to the isolation structure through the through holes, and the isolation structure is a conductive structure.

9. The display panel according to claim 1 or 2, characterized in that: The display panel includes a display area, the display area includes a first region and a second region, the second region is located at at least one side of the first region, and the light-transmitting opening is located in the first region.

10. A display device, characterized in that: A display panel comprising any one of claims 1 to 9.

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