Display panel and display

Abstract

To provide both touch and display functionality as applied to underscreen recognition, transparency display, etc.SOLUTION: A display panel includes a base, a display function layer located on the base, a touch structure, and a translucent light-shielding layer. The display functional layer includes a plurality of light emitting elements and translucent apertures, where the translucent apertures are located in the first region and in the gaps between the light emitting elements. The touch structure includes touch electrodes. The translucent light-shielding layer is located between the touch structure and the base, and the orthographic projection of the translucent aperture and the translucent light-shielding layer overlap at least partially at the base.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

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

[0003] However, current electronic display products are limited by their own structural design, and it is difficult to achieve both excellent touch function and display function when applied to scenes such as underscreen recognition and transparent display. Summary of the Invention

[0004] A first aspect of the present disclosure provides a display panel, the display panel including a base, a display function layer disposed on the base, a touch structure, and a light-transmitting shielding layer, the display function layer including a plurality of light-emitting elements and a plurality of light-transmitting openings arranged on the base, the light-transmitting openings arranged in a first region and located in gaps between the light-emitting elements, the touch structure disposed on a side of the display function layer facing away from the base and including a touch electrode, the light-transmitting shielding layer disposed between the touch structure and the base, and an orthogonal projection of the light-transmitting openings and the light-transmitting shielding layer at least partially overlap on the base.

[0005] In the above embodiment, in the area where the light-transmitting opening is located, the touch electrode and the circuit in the base (e.g., the circuit structure in the driving circuit layer described below) are isolated by a light-transmitting shielding layer, thereby eliminating mutual interference of driving signals between the touch electrode and the circuit in the base.

[0006] In one embodiment of the first aspect of the present disclosure, in the base, an orthogonal projection of the light-transmitting opening is located within an orthogonal projection of the light-transmitting shielding layer.

[0007] In one embodiment of the first aspect of the present disclosure, the gap between adjacent light-emitting elements is a first gap, the gap between the light-emitting element and the adjacent light-transmitting opening is a second gap, the touch electrode is a lattice electrode, and the orthogonal projections of the lattice lines of the lattice electrode at the base are respectively located within the orthogonal projections of the first gap and the second gap. That is, the orthogonal projections of some of the lattice lines at the base are located within the orthogonal projections of the gap between the light-emitting elements, and the orthogonal projections of other of the lattice lines at the base are located within the orthogonal projections of the gap between the light-emitting element and the light-transmitting opening. This design can increase the light transmittance of the touch electrode, and also allows the use of a highly conductive material such as a metal as the material of the touch electrode.

[0008] For example, the light-transmitting shielding layer may be a transparent electrode containing a transparent conductive material, so as not to block the light emitted from the light-emitting element.

[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. Optionally, the base includes a drive circuit layer.

[0010] In one embodiment of the first aspect of the present disclosure, the display panel may further include an isolation structure located on the base and defining a light-transmitting opening and a plurality of isolation openings, and the light-emitting elements are positionally restricted within the isolation openings, respectively.

[0011] In the above-mentioned solution, since the isolation structure is used, a mask plate is not required in the manufacturing process of the light-emitting element, and there is no need to consider the alignment accuracy of the manufacturing process, which is advantageous in reducing the gap dimension of the light-emitting element and improving the pixel PPI of the display panel. In addition, by providing a light-transmitting opening in the isolation structure in the first region, the region of the display panel where the light-transmitting opening is provided can be made light-transmitting. This allows the first region of the display panel to realize a transparent display or an underscreen recognition function, such as an underscreen fingerprint recognition function or an underscreen camera.

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

[0013] In the above-mentioned solution, in the gap between adjacent light-emitting elements, the isolation structure is formed so as to be generally wider at the top and narrower at the bottom as a whole, thereby increasing the blocking effect of the isolation structure on the light-emitting functional layer during the manufacturing process of the light-emitting element, and reducing the problem of current crosstalk between adjacent light-emitting elements.

[0014] In one embodiment of the first aspect of the present disclosure, the display function layer further includes a pixel definition layer including a plurality of pixel openings each corresponding to the isolation openings and located on a side of the base adjacent to the isolation structure, the pixel openings positionally confine the light-emitting elements, expose the first electrodes, respectively correspond to the isolation openings, and communicate with the corresponding isolation openings.

[0015] In one embodiment of the first aspect of the present disclosure, the light transmissive shielding layer is located on a side of the pixel defining layer adjacent to the isolating structure and is connected to the support.

[0016] In another embodiment of the first aspect of the present disclosure, the light-transmitting shielding layer is located on the side of the support adjacent to the crown, i.e., between the support and the crown, and is connected to the support. Furthermore, for example, at the base, the orthogonal projection of the light-transmitting shielding layer and the orthogonal projection of the support overlap.

[0017] In another embodiment of the first aspect of the present disclosure, the light-transmitting shielding layer includes a plurality of shielding units, the shielding units being located within the light-transmitting opening and covering at least a portion of the sidewall of the support.

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

[0019] In another embodiment of the first aspect of the present disclosure, the display panel further includes a first sealing layer, a second sealing layer, and a third sealing layer sequentially stacked on the display function layer, the touch structure is located on the side of the third sealing layer facing the base, the first sealing layer and the third sealing layer are inorganic layers, and the second sealing layer is an organic layer. The light-transmitting shielding layer is located between the first sealing layer and the second sealing layer and contacts the isolation structure, which is a conductive structure, or the light-transmitting shielding layer is located between the second sealing layer provided with a through-hole and the third sealing layer and is connected to the isolation structure, which is a conductive structure, through the through-hole.

[0020] For example, the display panel includes a display area, and the light-transmitting shielding layer, the isolation structure and the through hole are located within the display area; alternatively, the display panel includes a display area and a non-display area located on at least one side of the display area, and 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 embodiment of the first aspect of the present disclosure, the display panel further includes a first sealing layer, a second sealing layer, a third sealing layer and a buffer layer sequentially stacked on the display function layer, and the touch structure is located on a side opposite to a base of the buffer layer, where the first sealing layer, the third sealing layer and the buffer layer are inorganic layers, the second sealing layer is an organic layer, the second sealing layer and the buffer layer are provided with through-holes, and the light-transmitting shielding layer is located between the buffer layer and the touch structure and is connected to the isolation structure, which is a conductive structure, through the through-holes.

[0022] In one embodiment of the first aspect of the present disclosure, the entire display area is the first area. In this design, the display panel can be used for transparent display scenes.

[0023] In another embodiment 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 located on at least one side of the first area, and the light-transmitting opening is located in the first area. In this design, the display panel can be used in scenes such as under-screen fingerprint recognition, under-screen camera, etc.

[0024] A second aspect of the present disclosure provides a display device, which may include the display panel of any one of the above-described embodiments. [Brief description of the drawings]

[0025] [Figure 1] FIG. 2 is a schematic planar structure diagram of a display panel according to an embodiment of the present disclosure, showing a display substrate of the display panel. [Diagram 2] FIG. 2 is an enlarged view of the S1 region in one design of the display panel shown in FIG. [Diagram 3] FIG. 3 is a cross-sectional view taken along line M1-N1 in one design of the display panel shown in FIG. [Figure 4] 3 is a cross-sectional view taken along line M2-N2 of the display panel shown in FIG. 2. [Diagram 5]1A is a schematic diagram of a planar structure of a touch electrode in a display panel according to an embodiment of the present disclosure, where an S2 area corresponds to an S1 area in FIG 1. FIG. 1B is a cross-sectional view taken along M3-N3 of the touch electrode shown in FIG. [Figure 6] 1A is a schematic diagram of a planar structure of a touch electrode in a display panel according to an embodiment of the present disclosure, where an S3 area corresponds to an S1 area in FIG 1. FIG. 1B is a cross-sectional view taken along M4-N4 of the touch electrode shown in FIG. [Figure 7] 3 is a cross-sectional view taken along line M1-N1 in another design of the display panel shown in FIG. 2. [Figure 8] 3 is a cross-sectional view taken along line M1-N1 in another design of the display panel shown in FIG. 2. [Figure 9] 3 is a cross-sectional view taken along line M1-N1 in another design of the display panel shown in FIG. 2. [Figure 10] 3 is a cross-sectional view taken along line M1-N1 in another design of the display panel shown in FIG. 2. [Figure 11] 3 is a cross-sectional view taken along line M1-N1 in another design of the display panel shown in FIG. 2. [Figure 12] 5A to 5E are process diagrams of a method for manufacturing a display panel according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Hereinafter, the technical solutions in the embodiments of this specification will be described clearly and completely with reference to the drawings in the embodiments of this specification. Needless to say, the described embodiments are only some of the embodiments of this specification, and are not all of the embodiments. Based on the embodiments of this specification, all other embodiments obtained by those skilled in the art without creative labor also fall within the scope of protection of this specification.

[0027] The display panel has a touch function and can also have functions such as transparent display and under-screen recognition (fingerprint recognition, under-screen camera). For this purpose, a light-transmitting area is partitioned in the display panel, and light-transmitting holes are provided in the gaps between the sub-pixels of the light-transmitting area to realize light transmission. However, in the area where the light-transmitting holes are located, signal interference occurs between a conductive structure for realizing the touch function (for example, the touch electrode described below) and a lower-layer driving circuit (for example, the driving circuit in the base described below), which may cause a failure in the touch function or display function.

[0028] At least one embodiment of the present disclosure provides a display panel and a display device to solve at least the above technical problems. The display panel includes a display region, and the display region includes a first region. The display panel also includes a base, a display function layer located on the base, a touch structure, and a light-transmitting shielding layer. The display function layer includes a plurality of light-emitting elements and a plurality of light-transmitting openings arranged on the base, and the light-transmitting openings are arranged in the first region and located in the gaps between the light-emitting elements. The touch structure is located on a side of the display function layer facing away from the base and includes a touch electrode. The light-transmitting shielding layer is located between the touch structure and the base, and an orthogonal projection of the light-transmitting opening and an orthogonal projection of the light-transmitting shielding layer at least partially overlap on the base. According to the display panel, in the region where the light-transmitting opening is located, the touch electrode and the circuit in the base are isolated by the light-transmitting shielding layer, thereby eliminating mutual interference of driving signals between the touch electrode and the circuit in the base.

[0029] The structure of a display panel in at least one embodiment of the present disclosure will be described in detail below with reference to the drawings. In these drawings, a spatial orthogonal coordinate system is constructed based on the base (or display substrate) of the display panel to intuitively express the positional relationship of each element in the display panel. In the spatial orthogonal coordinate system, the X-axis and the Y-axis are parallel to the plane in which the base is located, and the Z-axis is perpendicular to the plane in which the base is located.

[0030] As shown in FIGS. 1 to 4, the display panel 10 includes a display area 11 and a non-display area 12 surrounding the display area 11. The display area 11 includes a first area 13, in which sub-pixels emitting light beams of different colors, such as R, G, and B, are arranged. A light-transmitting opening 201 is provided in the first area 13, and the first area 13 has a predetermined light transmittance and is used for underscreen recognition, camera, or transparent display. Note that, in some embodiments of the present disclosure, some wiring may be arranged in the display area 11 so that the non-display area 12 can be designed as a one-sided bezel.

[0031] The physical structure of the display panel 10 includes a base 100 , a display function layer 200 , a touch structure 20 and a light-transmitting shielding layer 30 disposed on the base 100 .

[0032] In the embodiment of the present disclosure, the base is provided with a circuit structure used to drive a functional structure for realizing display or other functions (e.g., fingerprint recognition). These functional structures may be designed according to the application demands of the display panel actually produced, and are not limited herein, nor are they limited to the specific design and type of the circuit structure in the base. For example, in at least one embodiment of the present disclosure, the base 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., and may be formed in a plurality of ways, such as 2T1C (i.e., two transistors (TFT) and one capacitor (C)), 3T1C, or 7T1C. The pixel driving circuit is connected to the light-emitting element 220 to control the switching state and light-emitting brightness of the light-emitting element 220.

[0033] For example, the display function layer 200 includes a plurality of light-emitting elements 220 and a plurality of light-transmitting openings 201 arranged on the base 100, the light-transmitting openings 201 are arranged in the first region 13 and are located in the gaps between the light-emitting elements 220, and the light-emitting elements 220 are the actual light-emitting structures of the sub-pixels R, G, and B, i.e., the light-transmitting openings 201 for transmitting light are provided in the gaps between the light-emitting elements 220.

[0034] For example, the touch structure 20 is located on the side of the display function layer 200 facing away from the base 100 and includes a touch electrode 400 .

[0035] For example, the light-transmitting shielding layer 30 is located between the touch structure 20 and the base 100 such that an orthogonal projection of the light-transmitting opening 201 and an orthogonal projection of the light-transmitting shielding layer 30 at least partially overlap on the base 100 .

[0036] For example, the material of the light-transmitting shielding layer 30 is a transparent conductive material, which may be, for example, ITO (indium tin oxide), IGO (indium gallium oxide), IZO (indium zinc oxide), etc.

[0037] In at least one embodiment of the present disclosure, as shown in Fig. 3, in the base 100, the orthogonal projection of the light-transmitting opening 201 is located within the orthogonal projection of the light-transmitting shielding layer 30. This can further improve the shielding effect of the light-transmitting shielding layer 30 on the driving signal between the touch electrode 400 and the driving circuit layer.

[0038] 2 and 3 again, in at least one embodiment of the present disclosure, the gap between adjacent light-emitting elements 220 (e.g., corresponding subpixels R and G) is a first gap 1, the gap between the light-emitting element 220 and the adjacent light-transmitting opening 201 is a second gap 2, and the touch electrode 400 may be designed as a lattice electrode, and the orthogonal projections of the lattice lines of the lattice electrode on the base 100 are respectively located within the orthogonal projections of the first gap 1 and the second gap 2. That is, in the touch electrode 400, the orthogonal projections of some of the lattice lines 21 on the display base 100 are located within the orthogonal projections of the gaps of the subpixels on the display base 100, and the orthogonal projections of the lattice lines 21 of other parts of the lattice electrodes on the base 100 are located within the orthogonal projections of the gaps between the subpixels and the light-transmitting openings 201 on the display base 100. This design can increase the light transmittance of the touch electrode 400, and also allows the touch electrode 400 to be made of a highly conductive material such as a metal.

[0039] In at least one embodiment of the present disclosure, as shown in FIG. 3 and FIG. 4, the display panel further includes an isolation structure 210 located on the base 100 and defining a light-transmitting opening 201 and a plurality of isolation openings 202, and the light-emitting element 220 may be restricted in position within the isolation opening 202. In this way, the use of the isolation structure 210 does not require a mask plate in the manufacturing process of the light-emitting element 220, so there is no need to consider the alignment accuracy problem in the manufacturing process, and it is advantageous to reduce the gap dimension of the light-emitting element 220 and improve the pixel PPI of the display panel 10 (for this principle, refer to the related description in the embodiment shown in FIG. 12(A) to FIG. 12(E)). In addition, by providing the light-transmitting opening 201 in the isolation structure 210 in the first region 13, the region in the display panel 10 where the light-transmitting opening 201 is provided can be made transparent, so that the first region 13 of the display panel 10 can realize a transparent display or an underscreen recognition function such as an underscreen fingerprint recognition, an underscreen camera, etc.

[0040] In addition, the light-transmitting and shielding layer only needs to cover the first region and separate the driving circuit layer from the touch electrode, and there is no further limitation on the specific position of the light-transmitting and shielding layer on this premise. Hereinafter, the specific installation methods of the insulating structure, touch electrode, light-emitting element, and other structures in the display panel will be briefly described, and then some specific installation methods of the light-transmitting and shielding layer will be described.

[0041] For example, the light emitting element 220 includes a first electrode 221, a light emitting functional layer 223, and a second electrode 222, which are sequentially stacked on the base 100. For example, the first electrode 221 may be an anode, and the second electrode 222 may be a cathode.

[0042] 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 to electrically isolate the first common layers 221 (main film layers that cause current crosstalk) of each light-emitting element 220 from each other.

[0043] For example, the isolation structure 210 includes a support 211 and a crown 212 sequentially stacked on the base 100, the orthogonal projection of the support 211 is located within the orthogonal projection of the crown 212 on the base 100, the support 211 is a conductive structure, the light-emitting functional layer 223 and the second electrode 222 of the light-emitting element 220 are located within the corresponding isolation opening 202, and the second electrode 222 of the light-emitting element 220 is located within the corresponding isolation opening 202 and connected to the support 211. In this way, in the gap between the adjacent light-emitting elements 220, the isolation structure 210 is formed so that the top is generally wide and the bottom is narrow. This increases the blocking effect of the isolation structure 210 on the light-emitting functional layer 223 (including the first common layer 2231, the first common layer 2231 being the main film layer that brings about current crosstalk) during the manufacturing process of the light-emitting element 220, thereby reducing the problem of current crosstalk between the adjacent light-emitting elements 220.

[0044] The material of the second electrode 222 may be a metal material. The thinner the second electrode 222, the higher its light transmittance, but the higher its electrical resistivity. If the thickness of the second electrode 222 is too small, the voltage drop of the second electrode 222 (which is the common electrode in this case) becomes too large when the isolation structure 210 is not installed. In the embodiment of the present disclosure, the second electrode 222 communicates with the conductive support 211, and the restriction on the thickness of the second electrode 222 can be lifted, so that the second electrode 222 can have a smaller thickness and a higher light transmittance.

[0045] In at least one embodiment of the present disclosure, the support 211 may be a metal conductive structure, and the metal material has high conductivity, which can reduce the voltage drop when driving the cathode. Meanwhile, the metal material may only be transparent when it is extremely thin (for example, at the level of several tens of nanometers). In contrast, the isolation structure 220 requires a certain thickness to block the light-emitting functional layer 223 (the first common layer 2231 included therein), and accordingly, the support 211 in the isolation structure 220 is almost opaque to light. Therefore, in order to allow the isolation structure 210 to transmit light, it is necessary to provide a transparent opening 201.

[0046] 3 and 4, in at least one embodiment of the present disclosure, the display function layer 223 may further include a pixel defining layer 213. The pixel defining layer 213 is located on a side of the base 100 close to the isolation structure 210, i.e., between the base 100 and the isolation structure 210, and the pixel defining layer 213 includes a plurality of pixel openings 203 each corresponding to the isolation openings 202. The pixel openings 203 positionally restrict the light emitting element 220, expose the first electrode 221, each correspond to the isolation openings 202, and communicate with the corresponding isolation openings 202.

[0047] In the embodiments of the present disclosure, the specific structure of the touch electrode is not limited, and can be designed according to actual process needs. Hereinafter, different designs of the touch electrode will be described in different embodiments, specifically as follows:

[0048] In at least one embodiment of the present disclosure, as shown in Figures 5(A) and 5(B), a 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 crossing point, and the first electrode strips 410 and the second electrode strips 420 are arranged as a grid electrode.

[0049] For example, in some embodiments of the present disclosure, as shown in Figures 5(A) and 5(B), 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 unit is located, and the first electrode strip 410 and the second electrode strip 420 are both transparent in the overlapping area. The first electrode strip 410 and the second electrode strip 420 may be separated by an insulating layer 430.

[0050] For example, in some other embodiments of the present disclosure, as shown in FIG. 6(A) and FIG. 6(B), the first electrode strip 410 includes a plurality of first electrode blocks 411 and a plurality of first connection portions 412, and the plurality of first electrode blocks 411 of the same first electrode strip 410 are connected by the first connection portion 412. The second electrode strip 420 includes a plurality of second electrode blocks 421 and a plurality of second connection portions 422, and the plurality of second electrode blocks 421 of the same second electrode strip 420 are connected by the second connection portion 422. The first connection portions 412 and the second connection portions 422 cross and are spaced apart from each other. The first electrode blocks 411, the first connection portions 412, and the second electrode strip 420 are in the same layer, and the second connection portions 422 are located between the first connection portions 412 and the isolation structure 210, or on the side of the first connection portions 412 away from the isolation structure 210. In this design, the light transmittance of the touch electrode 400 is high, and the alignment precision between the lattice holes and the light-transmitting openings 201 and the isolating openings 202 is high, so that the light transmittance of the first region 13 can be improved. In this design, the main body parts of the first electrode strip 410 and the second electrode strip 420 are installed in the same layer, so there is no need to consider the alignment problem of the lattice holes of both, which is advantageous to improving the light transmittance of the touch electrode 400. For example, the second connection portion 422 and the first connection portion 412 may be separated by an insulating layer 430.

[0051] In at least one embodiment of the present disclosure, referring again to FIG. 3 and FIG. 4, a sealing layer 300 may be provided between the display function layer 200 and the touch structure 20. For example, the sealing layer 300 may include a first sealing layer 310, a second sealing layer 320, and a third sealing layer 330 sequentially stacked on the display function layer 200, and the second sealing layer 320 is located between the first sealing layer 310 and the third sealing layer 330. The first sealing layer 310 and the third sealing layer 330 are inorganic layers with high density to block oxygen. The second sealing layer 320 is an organic layer and therefore has a large thickness, which flattens the surface of the display panel and makes it easier to manufacture the touch electrode 400 on the sealing layer 300.

[0052] In addition, the first sealing layer 310 may be used to protect the light emitting device 220 during the manufacturing process of the light emitting device 220, that is, the first sealing layer 310 is formed during the manufacturing process of the light emitting device 220. In particular, the relevant description in the embodiment shown in Fig. 12(A) to Fig. 12(E) may be referred to, and the description will be omitted here.

[0053] Several methods for installing the light-transmitting and light-shielding layer will be described below.

[0054] 7 , the light-transmitting shielding layer 30 is located on the side of the pixel defining layer 213 close to the isolation structure 210, i.e., between the pixel defining layer 213 and the isolation structure 210, and is connected to the support 211. For example, in this design, the light-transmitting shielding layer 30 may be set in a lattice, and the lattice holes of the light-transmitting shielding layer 30 correspond to the isolation openings 202 respectively.

[0055] In some other embodiments of the present disclosure, as shown in FIG. 8, the light-transmitting shielding layer 30 is located on the side of the support 211 close to the crown 212, i.e., located between the support 211 and the crown 212, and connected to the support 211. That is, the light-transmitting shielding layer 30 is located inside the isolation structure 210. For example, the orthogonal projection of the light-transmitting shielding layer 30 and the orthogonal projection of the support 211 overlap on the base 100, that is, the light-transmitting shielding layer 30 may also be set in a lattice shape, and the lattice holes of the light-transmitting shielding layer 30 and the isolation openings 202 correspond to each other. In this design, the crown 212 is not necessarily a conductive structure, so that the restrictions on the material of the crown 212 can be lifted. This allows the crown 212 to have a larger dimension, which can enhance the isolation effect on the light-emitting functional layer 223.

[0056] In some other embodiments of the present disclosure, the light-transmitting shielding layer includes a plurality of shielding units, each of which is located in the light-transmitting opening and covers at least a portion of the sidewall of the support. For example, the light-transmitting shielding layer 30 shown in FIG. 8 can be modified to leave only a portion of the light-transmitting shielding layer 30 located in the light-transmitting opening 201, which corresponds to the shielding unit.

[0057] In some other embodiments of the present disclosure, as shown in Fig. 9, the light-transmitting shielding layer 30 covers the display area, is located away from the base of the isolation structure, and contacts the surface facing away from the base of the isolation structure, and the crown portion 212 is a conductive structure.

[0058] In some other embodiments of the present disclosure, as shown in Fig. 9, the light-transmitting shielding layer 30 covers the display area, is located between the first encapsulation layer 310 and the second encapsulation layer 320, and contacts the isolation structure 210. And the isolation structure 210 is a conductive structure.

[0059] 3 and 4, in some other embodiments of the present disclosure, the light-transmitting shielding layer 30 covers the display area and is located between the second sealing layer 320 and the third sealing layer 330. The second sealing layer 320 is provided with a through-hole, 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.

[0060] In some other embodiments of the present disclosure, as shown in Fig. 10, a buffer layer 440 can be disposed between the encapsulation layer 300 and the touch structure 20, so as to avoid the encapsulation layer 300 being destroyed by the manufacture of the touch electrode 400. For example, the light-transmitting shielding layer 30 further covers the display area and is located between the buffer layer 440 and the touch structure 20, the second encapsulation layer 320 and the buffer layer 440 are provided with through-holes, and 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.

[0061] The through-hole may be located in the display area or outside the display area. That is, the light-transmitting shielding layer 30 and the isolation structure 210 may be connected in the display area, or the light-transmitting shielding layer 30 and the isolation structure 210 may be connected in a non-display area other than the display area, in which case both the light-transmitting shielding layer 30 and the isolation structure 210 extend to the non-display area. In the non-display area, the edges of the second sealing layer 320 and the third sealing layer 330 are formed with gentle slopes to facilitate the placement of signal lines, and the portion of the light-transmitting shielding layer 30 located in the area may be designed as a signal line and extend from the slope to the non-display area to be connected to the isolation structure 210.

[0062] For example, as shown in FIG. 11 , the display panel may further include structures such as an optical sheet 500 , a cover plate 600 , etc., which may be located on the side opposite to the display function layer 200 of the touch structure 20 .

[0063] Hereinafter, a manufacturing process of the display panel shown in FIG. 3 will be described with reference to FIGS. 12(A) to 12(E) to intuitively show the principle by which the isolation structure can increase the pixel array density PPI.

[0064] As shown in FIG. 12(A), a base 100 is prepared, and first electrodes 221 arranged in an array are formed on the base 100. An insulating material layer (e.g., an inorganic material layer) is deposited on the base 100 on which the first electrodes are formed. A support portion 211 and a crown portion 212 are formed on the display panel, in which a light-transmitting opening 201 and an isolating opening 202 are formed. A patterning process is performed on the insulating material film layer to form a pixel definition layer 213 (having a lattice-like planar shape). The pixel definition layer 213 includes the pixel openings 203 and covers the gaps between adjacent first electrodes, and thus the pixel definition layer 213 has a lattice-like planar shape.

[0065] In the embodiment of the present disclosure, the patterning process may be a photolithography patterning process, for example, including applying a photoresist to the structural layer that needs to be patterned, exposing the photoresist using a mask plate, developing the exposed photoresist to obtain a photoresist pattern, and etching (wet etching or dry etching) the structural layer using the photoresist pattern, and then selectively removing the photoresist pattern. Note that, if the material of the structural layer (such as the photoresist pattern 700 described below) includes photoresist, the structural layer can be directly exposed through a mask plate to form a desired pattern.

[0066] As shown in Fig. 12(B), a light-emitting functional layer and a second electrode are deposited on the base 100 to form light-emitting elements 220 in each of the isolation openings 202 of the isolation structure 210. Since no mask plate is used in the deposition process, the deposited material is deposited on the crown portion 212 as well as the light-transmitting openings 201 and the isolation openings 202. For example, the deposited light-emitting functional layer may emit red light (G), that is, at this stage, light-emitting elements 220 emitting red light are formed in each of the light-transmitting openings 201 and the isolation openings 202 of the isolation structure 210.

[0067] 12(C), a first encapsulation layer 310 is deposited to cover the light emitting element 220, and the first encapsulation layer 310 covers the entire display area at this stage. A photoresist is formed (for example, coated) on the first encapsulation layer 310, and then patterned to form a photoresist pattern 700. The photoresist pattern 700 covers only a part of the isolation openings 202 of the isolation structure 210 (the isolation openings 202 where the light emitting element G of the completed display panel is located).

[0068] 12(D), the surface of the display panel is etched using the photoresist pattern 700 as a mask to remove the first sealing layer 310, the second electrode, and the light-emitting functional layer that are not covered by the photoresist pattern 700. Then, the remaining photoresist pattern 700 is removed.

[0069] As shown in FIG. 12(E), the above steps are repeated to form light emitting elements 220 that emit green and blue light in the other isolation openings 202, respectively.

[0070] 3, after all the light emitting elements 220 are manufactured, the second sealing layer 320 is formed on the first sealing layer 310, through holes are formed in the second sealing layer 320, a transparent electrode is formed on the second sealing layer 320 as the light-transmitting shielding layer 30, and then the third sealing layer 330 is formed on the second sealing layer 320. Here, the light-transmitting shielding layer 30 contacts the isolation structure 210 through the through holes.

[0071] Referring again to FIG. 3 and FIG. 4, the touch electrode layer 400 is fabricated on the third sealing layer 330.

[0072] In addition, the manufacturing sequence of the light emitting elements 220 emitting red light, green light, and blue light may be designed according to actual needs, and the embodiments of the present disclosure are not limited thereto.

[0073] In addition, in some embodiments of the present disclosure, some of the layers, such as the light-emitting layers in the light-emitting functional layers, can be manufactured using a non-deposition method, such as inkjet printing, and can be specifically selected according to the materials of these layers. For example, if these layers are made of polymer materials that are not suitable for deposition, they can be manufactured by inkjet printing.

[0074] In the embodiment of the present disclosure, the design area of ​​the first region is not limited, and can be designed according to the demands of the actual process and the application scene of the display panel.

[0075] For example, in some embodiments of the present disclosure, the entire display area may be designed as the first area 13. In this design, the display panel can be used for scenes such as transparent display.

[0076] For example, in some other embodiments of the present disclosure, referring back to Fig. 1, the display area further includes a second area (an area within the display area 11 and other than 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. In this design, the display panel can be used for scenes such as fingerprint recognition or under-screen camera.

[0077] At least one embodiment of the present disclosure provides a display device, which may include the display panel in the above embodiment. Also, when the first region is a recognition region, the display device may include a recognition element, and an orthogonal projection of the recognition element at a base at least partially overlaps with the first region.

[0078] For example, in some embodiments of the present disclosure, the recognition element includes at least one fingerprint recognition sensor, which may be disposed on a side of the base facing away from the display function layer, or may be disposed within the base.

[0079] For example, in some other embodiments of the present disclosure, the recognition element may be a camera, the camera being located on the side of the base facing away from the display function layer.

[0080] For example, in the embodiments of the present disclosure, the display device may be any product or part having a display function, such as a television, a digital camera, a mobile phone, a wristwatch, a tablet computer, a notebook computer, a navigator, and the like.

[0081] The above description is merely a preferred embodiment of the present specification, and does not limit the present specification. Any modifications, equivalent replacements, etc. made within the spirit and principle of the present specification should be included in the protection scope of the present specification.

Claims

1. A display panel, The display device includes a base, a display function layer, a touch structure, and a light-transmitting shielding layer; the display function layer includes a plurality of light-emitting elements and a plurality of light-transmitting openings arranged on the base, the light-transmitting openings being located in gaps between adjacent light-emitting elements; the touch structure is located on a side of the display function layer facing away from the base and includes a touch electrode; the light-transmitting shielding layer is located on a side of the touch structure adjacent to the display function layer, and an orthogonal projection of the light-transmitting opening in the base is located within an orthogonal projection of the light-transmitting shielding layer; A display panel characterized by:

2. a gap between adjacent light-emitting elements is a first gap, and a gap between the light-emitting element and the adjacent light-transmitting opening is a second gap; the touch electrode is a grid-like electrode, and on the base, orthogonal projections of grid lines of the grid-like electrode are respectively located within the orthogonal projections of the first gap and the second gap; The light-transmitting shielding layer includes a transparent conductive material.

2. The display panel according to claim 1 .

3. and an isolation structure located on the base and defining the light-transmitting opening and a plurality of isolation openings, wherein the light-emitting elements are each positioned within the isolation openings.

3. The display panel according to claim 1, wherein the first and second electrodes are arranged in a first direction.

4. The light emitting element includes a first electrode, a light emitting functional layer, and a second electrode sequentially stacked on the base, the light emitting functional layer and the second electrode of the light emitting element being located in the corresponding isolation opening; the isolation structure includes a support portion and a crown portion sequentially stacked on the base, the orthogonal projection of the support portion being located within the orthogonal projection of the crown portion on the base; The support has a conductive structure, and the second electrode of the light-emitting element is connected to the support.

4. The display panel according to claim 3.

5. The display functional layer further includes a pixel defining layer; the pixel definition layer includes a plurality of pixel openings each corresponding to one of the isolation openings and is located on a side of the base adjacent to the isolation structure; The pixel openings positionally restrict the light emitting elements, expose the first electrodes, correspond to the isolation openings, and communicate with the corresponding isolation openings; the light-transmitting shielding layer is located on a side of the pixel defining layer adjacent to the isolation structure and is connected to the support; 5. The display panel according to claim 4.

6. The light-transmitting shielding layer is located on a side of the support portion close to the crown portion and is connected to the support portion, and an orthogonal projection of the light-transmitting shielding layer and an orthogonal projection of the support portion overlap on the base.

5. The display panel according to claim 4.

7. the light-transmitting shielding layer includes a plurality of shielding units, the shielding units being located within the light-transmitting opening and covering at least a portion of a sidewall of the support; 5. The display panel according to claim 4.

8. the light-transmitting shielding layer covers the display function layer and the light-transmitting opening, and is located on a side of the isolation structure facing away from the base and in contact with a surface of the isolation structure facing away from the base, and the crown portion is a conductive structure; 5. The display panel according to claim 4.

9. The display device further includes a first sealing layer, a second sealing layer and a third sealing layer sequentially stacked on the display function layer, the touch structure is located on a side of the third sealing layer facing away from the base, the first sealing layer and the third sealing layer are inorganic layers, and the second sealing layer is an organic layer; the light-transmitting shielding layer covers the display function layer and the light-transmitting opening, is located on a side of the first sealing layer that is adjacent to the second sealing layer, and is in contact with the isolation structure, the isolation structure being a conductive structure; or the light-transmitting shielding layer covers the display function layer and the light-transmitting opening, and is located on a side of the second sealing layer adjacent to the third sealing layer, a through hole is provided in the second sealing layer, the light-transmitting shielding layer is connected to the isolation structure through the through hole, and the isolation structure is a conductive structure; 4. The display panel according to claim 3.

10. 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; Alternatively, 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 in the non-display area.

10. The display panel according to claim 9.

11. The display device further includes a first sealing layer, a second sealing layer, a third sealing layer and a buffer layer sequentially stacked on the display function layer, the touch structure is located on a side of the buffer layer facing away from the base, the first sealing layer, the third sealing layer and the buffer layer are inorganic layers, and the second sealing layer is an organic layer; 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 adjacent to the touch structure, the second sealing layer and the buffer layer are provided with through holes, the light-transmitting shielding layer is connected to the isolation structure through the through holes, and the isolation structure is a conductive structure; 4. The display panel according to claim 3.

12. 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 within the first area; 3. The display panel according to claim 1, wherein the first and second electrodes are arranged in a first direction.

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