CN114975827A - Display panel and display device - Google Patents

Abstract

The embodiment of the application provides a display panel and display device, display panel includes the display area, and the display area includes sensing area under the screen and around sensing area's under the screen non-sensing area, and display panel still includes: the light-emitting device comprises a substrate base plate, a light-emitting layer, a pixel limiting layer and a light shaping assembly; the light-emitting layer is positioned on one side of the substrate and comprises a plurality of light-emitting units distributed in an array; the pixel defining layer is positioned on one side of the substrate base plate and comprises a plurality of pixel openings, and a plurality of light emitting units are arranged in the pixel openings; the light shaping assembly is arranged in the sensing area under the screen, the light shaping assembly is positioned on one side, away from the substrate base plate, of the pixel limiting layer, orthographic projections of the light shaping assembly on the substrate base plate are positioned between orthographic projections of two adjacent pixel openings on the substrate base plate, and the light shaping assembly is used for enabling the reflectivity of the sensing area under the screen to be smaller than 6%.

Description

Display panel and display device

Technical Field

The present application relates to the field of display technologies, and in particular, to a display panel and a display device.

Background

With the development of display technology, people pay more attention to the development of full-screen, and particularly have strong interest in the under-screen sensing technology of the full-screen. The under-screen sensing technology is applied to the aspects of under-screen camera shooting, under-screen fingerprints and the like, can integrate devices such as a camera and a fingerprint sensor under a display screen and is not easy to observe on the surface of the display screen, and is favorable for comprehensive screening of the display device. In the related art, the display panel has a sensing area under the screen and a non-sensing area surrounding the sensing area under the screen, and the sensing area under the screen corresponds to devices such as a camera below the display screen. However, in the current display panel, the sensing area under the screen has certain visibility, and the integration of the sensing area under the screen and the non-sensing area is poor, so that the integration degree of the sensing area under the screen and the display panel is not good enough, and the integrity of the sensing area under the screen and the display panel is influenced.

Disclosure of Invention

An object of the embodiment of this application is to provide a display panel and display device to improve sensing district and the integrative nature in non-sensing district under the screen, improve sensing district and display panel's the degree of fusing under the screen, improve sensing district and display panel's wholeness under the screen. The specific technical scheme is as follows:

embodiments of a first aspect of the present application provide a display panel comprising a display area including an under-screen sensing area and a non-sensing area surrounding the under-screen sensing area, the display panel further comprising: the light source comprises a substrate, a light-emitting layer, a pixel limiting layer and a light shaping assembly; the light-emitting layer is positioned on one side of the substrate and comprises a plurality of light-emitting units distributed in an array; the pixel defining layer is positioned on one side of the substrate base plate, the pixel defining layer comprises a plurality of pixel openings, and the plurality of light emitting units are arranged in the plurality of pixel openings; the light shaping assembly is arranged in the under-screen sensing area, the light shaping assembly is positioned on one side, away from the substrate base plate, of the pixel limiting layer, orthographic projections of the light shaping assembly on the substrate base plate are positioned between orthographic projections of two adjacent pixel openings on the substrate base plate, and the light shaping assembly is used for enabling the reflectivity of the under-screen sensing area to be smaller than 6%.

In some embodiments, the light emitting unit includes an anode layer, an organic light emitting layer, and a cathode layer sequentially disposed along a side away from the substrate, and at least some of the cathode layers of the light emitting unit are connected as an integral structure.

In some embodiments, the light shaping component comprises at least one light-transmitting region opened to the cathode layer, and an orthographic projection of the light-transmitting region on the substrate is located between orthographic projections of the two adjacent pixel openings on the substrate.

In some embodiments, the material of the at least one light-transmissive region comprises cathode patterning material CPM.

In some embodiments, the display panel further comprises a CPL layer on a side of the cathode layer away from the substrate base plate.

In some embodiments, the light shaping component includes a reflective metal layer located on a side of the CPL layer away from the substrate base, the reflective metal layer including at least one reflective unit, an orthogonal projection of a reflective unit on the substrate base being located between orthogonal projections of two adjacent pixel openings on the substrate base.

In some embodiments, the CPL layer has a thickness d, an incident angle of an incident light ray incident on a side surface of the reflection unit away from the substrate is θ, a wavelength of the incident light ray is λ, and the predetermined phase coefficient of the incident light ray is n, where 2d sin θ ═ 1/2+ n) λ.

In some embodiments, the under-screen sensing area includes a first color film layer located on a side of the light shaping assembly away from the substrate base plate, the first color film layer includes a plurality of first color blocks, and the first color blocks are disposed corresponding to the light emitting units;

the non-sensing area comprises a black matrix layer and a second color film layer, the black matrix layer is positioned on one side of the light-emitting unit far away from the substrate base plate, and the black matrix layer comprises a plurality of hollow areas; the second color film layer is located on one side, far away from the substrate base plate, of the light emitting layer, the second color film layer comprises a plurality of second color blocking blocks, the second color blocking blocks are arranged corresponding to the light emitting units, the second color blocking blocks are located in the hollow areas, and the first color film layer and the second color film layer are arranged on the same layer.

In some embodiments, the material of the reflective metal layer includes at least one of indium tin oxide, indium zinc oxide, indium gallium zinc oxide.

In some embodiments, the display panel further includes a driving circuit layer located on one side of the substrate, the driving circuit layer includes a plurality of driving circuits, the plurality of driving circuits and the plurality of light emitting units are correspondingly disposed, the driving circuit includes an active layer, a first gate insulating layer, a gate metal layer, a second gate insulating layer, an interlayer dielectric layer, and a source drain metal layer, the gate metal layer includes a gate, and the source drain metal layer includes a source and a drain.

Embodiments of a second aspect of the present application provide a display device comprising a display panel as described in any one of the above.

The embodiment of the application has the following beneficial effects:

in an embodiment of the present application, a display panel includes a light emitting layer and a pixel defining layer, and a plurality of light emitting units distributed in an array included in the light emitting layer are disposed in a plurality of pixel openings included in the pixel defining layer. The display panel further comprises a light shaping assembly, the light shaping assembly is arranged in a sensing area under a screen of the display panel, and orthographic projections of the light shaping assembly on the substrate base plate are located between orthographic projections of two adjacent pixel openings on the substrate base plate, namely orthographic projections of the light shaping assembly on the substrate base plate are located between orthographic projections of two adjacent light-emitting units on the substrate base plate. In the display panel that this application embodiment provided, incident light gets into under the screen behind the light shaping subassembly in the sensing district, the transmission path of part incident light can be changed to the light shaping subassembly, reduces the quantity of incident to the reflection light that the cathode layer took place to launch, perhaps makes the reflection light that incident light corresponds weaken or disappear, improves the transmissivity in sensing district under the screen, reduces the reflectivity in sensing district under the screen, improves display panel's display effect. Further, set up light plastic subassembly and can also make the reflectivity in sensing district under the screen less than 6% in display panel to improve sensing district and the integrative nature in non-sensing district under the screen, improve sensing district and display panel's the degree of fusing under the screen, improve sensing district and display panel's wholeness under the screen.

Of course, not all advantages described above need to be achieved at the same time in the practice of any one product or method of the present application. The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other embodiments can be obtained by using the drawings without creative efforts.

FIG. 1 is a schematic view of a display panel according to some embodiments of the present disclosure;

FIG. 2 is an enlarged view of area A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 4 is another cross-sectional view taken along the direction a-a in fig. 1.

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 6 is another cross-sectional view taken along line B-B of FIG. 1;

fig. 7 is a further sectional view taken along the line B-B in fig. 1.

Reference numerals: 100-display panel, 200-non-sensing area, 300-under-screen sensing area, 310-transparent wiring, 400-non-display area, 10-light shaping component, 110-light transmission area, 120-reflective metal layer, 1201-reflective unit, 1-substrate, 3-driving circuit layer, 30-driving circuit, 301-active layer, 302-first gate insulating layer, 303-gate metal layer, 3031-gate, 304-second gate insulating layer, 305-interlayer dielectric layer, 306-source drain metal layer, 307-passivation layer, 308-planarization layer, 3061-source, 3062-drain, 4-light emitting layer, 40-light emitting unit, 401-anode layer, 402-pixel limiting layer, 403-cathode layer, 404-CPL layer, 405-packaging layer, 406-organic light emitting layer, 407-touch layer, 501-first color film layer, 5011-first color block, 502-second color film layer, 5021-second color block, 503-black matrix layer, 504-optical glue layer, 6-liquid crystal layer, 70-incident light and 80-reflected light.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two sets), "plural pieces" refers to two or more (including two pieces).

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations and positional relationships that are based on the orientations and positional relationships shown in the drawings, and are used only for convenience in describing the embodiments of the present application and for simplicity in description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

It is noted that in the drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. Also, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or layer or intervening layers may also be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or intervening layers or elements may also be present. In addition, it will also be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer between the two layers or elements, or more than one intermediate layer or element may also be present. Like reference numerals refer to like elements throughout.

In the related art, in order to improve the transmittance of the display panel, a Color Filter On Encapsulation Layer (Color film) structure is usually covered On the display panel. The COE structure includes a BM (Black Matrix) layer and a color film layer on a thin film encapsulation layer of the display panel. Sensing district needs higher transmissivity under the screen among the display panel, consequently, get rid of the BM layer in the sensing district under the screen, nevertheless get rid of the back with the BM layer, the incident light gets into the screen and sees through the negative pole layer of the various rete below of more incidences of various rete behind the sensing district, the negative pole layer has great reflectivity, make the reflectivity greatly increased in sensing district under the screen, thereby make the visibility in sensing district under the screen higher, sensing district and non-sensing district's an organic whole nature is relatively poor under the screen, make sensing district and display panel's the degree of integration under the screen not good enough, influence sensing district and display panel's wholeness under the screen.

In order to improve the integrity of the sensing area and the non-sensing area under the screen and improve the fusion degree and integrity of the sensing area and the display panel under the screen, the embodiment of the application provides a display panel and a display device, and the display panel and the display device provided by the embodiment of the application are described in detail with reference to the accompanying drawings. The Display panel may be an LCD (Liquid Crystal Display), an electroluminescent Display panel, or a photoluminescent Display panel. In the case that the display panel is an electroluminescent display panel, the electroluminescent display panel may be an OLED (Organic Light-Emitting Diode) or a QLED (Quantum Dot electroluminescent display panel). In case the display panel is a photoluminescent display panel, the photoluminescent display panel may be a quantum dot photoluminescent display panel.

Embodiments of the first aspect of the present application provide a display panel 100, as shown in fig. 1, the display panel 100 comprising a display area including an under-screen sensing area 300 and a non-sensing area 200 surrounding the under-screen sensing area 300, as shown in fig. 3 and 4, the display panel 100 further comprising: a substrate base plate 1, a light emitting layer 4, a pixel defining layer 402 and a light shaping component 10; the light-emitting layer 4 is positioned on one side of the substrate base plate 1, and the light-emitting layer 4 comprises a plurality of light-emitting units 40 distributed in an array; the pixel defining layer 402 is positioned at one side of the base substrate 1, the pixel defining layer 402 includes a plurality of pixel openings in which the plurality of light emitting cells 40 are disposed; light shaping component 10 is disposed in underscreen sensing area 300, and light shaping component 10 is located on a side of pixel defining layer 402 away from substrate base plate 1, an orthographic projection of light shaping component 10 on substrate base plate 1 is located between orthographic projections of two adjacent pixel openings on substrate base plate 1, and light shaping component 10 is configured to make reflectivity of underscreen sensing area 300 less than 6%.

In the embodiment of the present application, the off-screen sensing area 300 may include an off-screen camera area, a fingerprint identification area, an optical touch area, a gesture interaction area, and the like.

In the embodiment of the present application, as shown in fig. 5, the light emitting layer 4 includes a plurality of light emitting units 40, the pixel defining layer 402 forms a plurality of pixel openings through its own concave structure, and each light emitting unit 40 is located in one pixel opening to separate adjacent light emitting units 40, so as to reduce optical crosstalk between adjacent light emitting units 40.

In the embodiment of the present application, as shown in fig. 3 and 4, the light shaping assembly 10 is located in the under-screen sensing area 300, and the light shaping assembly 10 is a structure capable of changing the transmission path of the incident light 70 incident on itself, so that the incident light 70 partially propagates along a straight line or is reflected or refracted at a specific angle.

In the display panel 100 provided in the embodiment of the present application, as shown in fig. 3 and 4, the light shaping assembly 10 is disposed in the under-screen sensing area 300, and the orthographic projection of the light shaping assembly 10 on the substrate base 1 is located between the orthographic projections of two adjacent pixel openings on the substrate base 1, that is, the orthographic projection of the light shaping assembly 10 on the substrate base 1 is located between the orthographic projections of two adjacent light emitting units 40 on the substrate base 1. After the incident light 70 enters the light shaping assembly 10 in the under-screen sensing area 300, the light shaping assembly 10 may change a transmission path of a part of the incident light 70, reduce the amount of the reflected light 80 incident to the cathode layer 403 for reflection, or weaken or disappear the reflected light 80 corresponding to the incident light 70, thereby improving the transmittance of the under-screen sensing area 300, reducing the reflectance of the under-screen sensing area 300, and improving the display effect of the display panel 100. Further, the inclusion of light shaping assembly 10 in display panel 100 may result in a reflectivity of sub-screen sensing region 300 of less than 6% to improve the integrity of sub-screen sensing region 300 with non-sensing region 200, to improve the degree of integration of sub-screen sensing region 300 with display panel 100, and to improve the integrity of sub-screen sensing region 300 with display panel 100.

Further, the plurality of light emitting units 40 include a plurality of red light emitting units, a plurality of green light emitting units, and a plurality of blue light emitting units.

Further, the base substrate 1 may be a rigid base substrate such as a glass base substrate or the like. The substrate 1 may also be a flexible substrate, such as a polyimide substrate, and the like, which is not limited in this application.

In some embodiments, as shown in fig. 6, the light emitting unit 40 includes an anode layer 401, an organic light emitting layer 406, and a cathode layer 403 sequentially disposed along a side away from the substrate 1, and at least some of the cathode layers 403 of the light emitting unit 40 are connected as an integral structure.

In the embodiment of the present invention, as shown in fig. 3 and 4, the anode layer 401 and the organic light emitting layer 406 of each light emitting unit 40 are separated by the pixel defining layer 402, and the cathode layers 403 of the light emitting units 40 or the cathode layers 403 of some light emitting units 40 may be connected together to have an equal potential. The organic light emitting layer 406 may be formed by evaporation, and the organic light emitting layer 406 may include a hole transport layer and an electron transport layer, which are stacked.

In some embodiments, as shown in fig. 3, the light shaping component 10 includes at least one light-transmissive region 110 opening on the cathode layer 403, and an orthogonal projection of the light-transmissive region 110 on the substrate base plate 1 is located between orthogonal projections of two adjacent pixel openings on the substrate base plate 1.

In the embodiment of the present application, as shown in fig. 3, the light-transmitting region 110 may be an open region formed by etching the cathode layer 403. At least one light-transmitting region 110 is disposed on the cathode layer 403, and when the incident light 70 entering the display panel 100 is transmitted to the cathode layer 403, the light-transmitting region 110 enables the incident light 70 to directly penetrate through the light-transmitting region 110 and enter the pixel defining layer 402 below the cathode layer 403 without being reflected by the cathode layer 403. The reflectivity of the pixel defining layer 402 is much less than that of the cathode layer 403, so allowing light to be incident directly on the pixel defining layer 402 reduces the reflectivity of the incident light 70. In addition, set up at least one light transmission district 110 on cathode layer 403, can reduce the whole area of cathode layer 403, and then reduce cathode layer 403 to incident light 70's reflection effect to reduce the photographic zone's under the screen reflectivity, reduce display panel 100's reflectivity, can also improve the integrative nature of sensing district 300 and non-sensing district 200 under the screen, improve the integration degree of sensing district 300 and display panel 100 under the screen, improve sensing district 300 and display panel 100's wholeness under the screen. Further, the number of the light-transmitting regions 110 and the area of each light-transmitting region 110 can be determined according to practical situations, such as the area of the cathode layer 403, the number of the light-emitting units 40, and the reflectivity of the under-screen sensing region 300, which is not limited in the embodiment of the present application.

In some embodiments, the material of the at least one light-transmissive region 110 includes a cathode patterned material cpm (cathode Patterning material).

In the embodiment of the present application, after the light-transmitting region 110 is formed on the cathode layer 403 by etching, the light-transmitting region 110 is filled with the CPM material. The CPM material is a material that is selectively deposited only for the cathode material, where it would be difficult to attach and enable patterning of the cathode. The CPM material is used to fill at least one light-transmitting region 110, so that the flatness of the cathode layer 403 can be improved, the light-transmitting region 110 can be free from reflection, the transmittance of the display panel 100 is improved, and the reflectance of the display panel 100 is reduced. Further, CPM materials include, but are not limited to, organic fluorine-containing materials and the like.

In some embodiments, as shown in fig. 3 and 4, the display panel 100 further includes a CPL (Capping Layer) Layer 404 on the side of the cathode Layer 403 away from the substrate 1. The CPL layer 404 located above the cathode layer 403 has characteristics of high refractive index, low absorption coefficient, and the like, and the CPL layer 404 may be disposed above the cathode layer 403 by evaporation, so that the cathode layer 403 covered with the CPL layer 404 has a better transmittance, thereby improving the transmittance of the display panel 100, and improving the optical characteristics and the display effect of the display panel 100.

In some embodiments, as shown in fig. 4, the light shaping component 10 includes a reflective metal layer 120, the reflective metal layer 120 is located on a side of the CPL layer 404 away from the substrate base plate 1, the reflective metal layer 120 includes at least one reflective unit 1201, and an orthogonal projection of the reflective unit 1201 on the substrate base plate 1 is located between orthogonal projections of two adjacent pixel openings on the substrate base plate 1.

In the embodiment of the present application, as shown in fig. 4, a reflective metal layer 120 is disposed on the CPL layer 404 of the under-screen sensing area 300, and the reflective metal layer 120 includes a plurality of reflective units 1201, and an orthogonal projection of each reflective unit 1201 on the substrate base 1 is located between two adjacent pixel openings and between orthogonal projections on the substrate base 1. When part of the incident light 70 passes through the cathode layer 403 and the reflection unit 1201 positioned above the cathode layer 403, a reflection phenomenon may occur and reflected light 80 is generated, the part of the reflected light 80 corresponding to the cathode layer 403 may be parallel to the part of the reflected light 80 corresponding to the reflection unit 1201, and a superposition phenomenon may occur between the parallel reflected light 80, so that the intensity of the superposed reflected light 80 is reduced or even disappears. For example, the reflected light 80 corresponding to the cathode layer 403 and the reflected light 80 corresponding to the reflection unit 1201 have the same or similar light intensity and phase, and the reflected light 80 parallel to each other, when the superposition phenomenon occurs between two parallel reflected light 80 having the same or similar light intensity and phase, the two reflected light 80 will be superposed to form a reflected light 80 with weaker light intensity, or the two reflected light 80 will cancel each other, so as to reduce the overall intensity of the reflected light 80, thereby reducing the reflectivity of the under-screen sensing area 300 of the display panel 100, further reducing the reflectivity of the display panel 100, improving the degree of fusion between the under-screen sensing area 300 and the non-sensing area 200, and improving the display effect of the display panel 100.

In some embodiments, as shown in fig. 4, the CPL layer 404 has a thickness d, the incident angle of the incident light 70 to the surface of the side of the reflection unit 1201 away from the substrate 1 is θ, the wavelength of the incident light 70 is λ, and the predetermined phase coefficient of the incident light 70 is n, where 2d sin θ ═ 1/2+ n λ.

In the embodiment of the present application, the predetermined phase coefficient n of the incident light 70 may be 0 or a positive integer, such as 1, 2, 3, etc., and the wavelength λ of the incident light 70 may be 390nm to 780 nm. As shown in fig. 4, the intensity of the incident light 70 entering the display panel 100 is substantially the same, and when 2d sin θ ═ λ (1/2+ n) is satisfied, the phases of the part of the incident light 70 entering the cathode layer 403 and the reflection unit 1201 are the same, and the intensity of the superimposed reflected light 80 generated after the incident light 70 passes through the cathode layer 403 and the reflection unit 1201 is the weakest, so that the reflectivity of the under-screen sensing area 300 of the display panel 100 can be further reduced, the reflectivity of the display panel 100 can be further reduced, the degree of fusion between the under-screen sensing area 300 and the non-sensing area 200 can be improved, and the display effect of the display panel 100 can be improved.

In some embodiments, as shown in fig. 3, 4 and 5, the under-screen sensing region 300 includes a first color film layer 501, the first color film layer 501 is located on a side of the light shaping assembly 10 away from the substrate base plate 1, the first color film layer 501 includes a plurality of first color blocks 5011, and the first color blocks 5011 are disposed corresponding to the light emitting units 40; the non-sensing area 200 comprises a black matrix layer 503 and a second color film layer 502, the black matrix layer 503 is positioned on one side of the light emitting unit 40 far away from the substrate base plate 1, and the black matrix layer 503 comprises a plurality of hollow areas; the second color film layer 502 is located on one side of the light emitting layer 4 away from the substrate base plate 1, the second color film layer 502 includes a plurality of second color resist blocks 5021, the second color resist blocks 5021 are disposed corresponding to the light emitting units 40, the second color resist blocks 5021 are located in a plurality of hollow areas, and the first color film layer 501 and the second color film layer 502 are disposed on the same layer.

In the embodiment of the present application, as shown in fig. 3, 4 and 5, a plurality of first color resist 5011 and a plurality of second color resist 5021 are disposed corresponding to a plurality of light emitting units 40. Further, the first color blocks 5011 and the second color blocks 5021 may each include a plurality of red color blocks, a plurality of green color blocks, and a plurality of blue color blocks. Further, as shown in fig. 4 and fig. 5, the black matrix layer 503 is not disposed in the under-screen sensing area 300, and the space between adjacent first color resist blocks 5011 in the first color film layer 501 may be filled with an optical glue, so as to further improve the transmittance of the display panel 100 and improve the display effect.

In this embodiment, as shown in fig. 3, 4 and 5, the black matrix layer 503 has a plurality of hollow areas arranged at intervals, the second color resist blocks 5021 are located in the hollow areas, the black matrix layer 503 is a black light-shielding layer which is not transparent locally, and specifically, the other areas of the black matrix layer 503 except the hollow areas may be coated with a black light-shielding dye which is not transparent. The black matrix layer 503 can reduce optical crosstalk between adjacent light emitting units 40, and can also absorb part of the reflected light 80 of the non-sensing area 200, thereby reducing the reflectivity of the non-sensing area 200 and improving the display effect of the display panel 100.

Further, the first color film layer 501 and the second color film layer 502 are disposed on the same layer, so that the first color film layer 501 and the second color film layer 502 can be formed in one processing process through the same mask, and the process complexity of the display panel 100 is further reduced.

In some embodiments, the material of the reflective metal layer 120 includes at least one of indium tin oxide, indium zinc oxide, and indium gallium zinc oxide.

In the embodiment of the present application, materials such as indium tin oxide, indium zinc oxide, indium gallium zinc oxide, and the like have good electrical conductivity and light transmittance, which not only can meet the requirement of the display panel 100 on the electrical conductivity, but also can improve the transmittance of the display panel 100, and further improve the display effect of the display panel 100. When the incident light 70 entering the display panel 100 is transmitted to the reflective metal layer 120, a part of the incident light is transmitted to the CPL layer 404 below the reflective metal layer 120 through refraction, a part of the incident light forms the reflected light 80 through reflection of the reflective metal layer 120, the reflected light 80 passing through the reflective metal layer 120 and the reflected light 80 passing through the cathode layer 403 can generate a light superposition effect, the light intensity of the reflected light 80 generating the superposition effect can be reduced, thereby reducing the intensity of the whole reflected light 80 of the display panel 100, reducing the reflectivity of the display panel 100, and improving the display effect of the display panel 100.

In some embodiments, as shown in fig. 6 and 7, the display panel 100 further includes a driving circuit layer 3 located on one side of the substrate 1, the driving circuit layer 3 includes a plurality of driving circuits 30, the plurality of driving circuits 30 and the plurality of light emitting units 40 are correspondingly disposed, the driving circuit 30 includes an active layer 301, a first gate insulating layer 302, a gate metal layer 303, a second gate insulating layer 304, an interlayer dielectric layer 305, and a source-drain metal layer 306, the gate metal layer 303 includes a gate electrode 3031, and the source-drain metal layer 306 includes a source electrode 3061 and a drain electrode 3062.

In the embodiment of the present application, the display panel 100 may have a top-gate structure, and the display panel 100 may also have a bottom-gate structure or a dual-gate structure, which is not particularly limited in this application. As shown in fig. 6 and 7, taking the display panel 100 as a bottom gate structure as an example, the driving circuit 30 includes an active layer 301, a first gate insulating layer 302, a gate metal layer 303, a second gate insulating layer 304, an interlayer dielectric layer 305, and a source-drain metal layer 306, which are sequentially disposed along a direction away from the substrate 1. The anode layer 401 is connected to the source 3061 or the drain 3062 of the driving circuit 30 through a via hole, and the source 3061 or the drain 3062 is connected to the active layer 301 through a via hole. Here, the anode layer 401 may be electrically connected to or used as a pixel electrode, and the cathode layer 403 may be electrically connected to or used as a common electrode. The materials of the anode layer 401 and the cathode layer 403 may include transparent metal oxides, such as Indium Zinc Oxide (IZO), Indium Tin Oxide (ITO), and the like, and the materials of the anode layer 401 and the cathode layer 403 may also include metal materials such as copper, aluminum, silver, and the like, or alloy materials containing the above metal materials, and the like, which may be set according to actual requirements, and the present application is not limited thereto.

In the embodiment of the present disclosure, the material of the gate metal layer 303 and the source drain metal layer 306 may include a metal material such as copper, aluminum, silver, or an alloy material containing the above metal material. The material of the first gate insulating layer 302 and the second gate insulating layer 304 may include an inorganic insulating material such as silicon oxide, silicon nitride, or silicon oxynitride, or may include an organic insulating material such as polyimide, polyththalimide, polyththalamide, an acrylic resin, benzocyclobutene, or a phenol resin. Further, the gate electrode 3031 may have a stacked structure including a copper layer and a molybdenum niobium layer for protecting the copper layer. In addition, the source 3061 and drain 3062 electrodes may also include a copper layer and a molybdenum niobium layer for protecting the copper layer, and similarly, the molybdenum niobium layer may protect the copper layer, which may reduce the probability of corrosion of the copper layer.

Further, a portion of driving circuit 30 in display panel 100 is used for driving light-emitting units 40 in non-sensing area 200, and a portion of driving circuit 30 is used for driving light-emitting units 40 in sub-screen sensing area 300. As shown in fig. 2, the driving circuits 30 corresponding to the plurality of light emitting units 40 of the under-screen sensing area 300 may be disposed in the non-sensing area 200 or the non-display area 400 (frame area), so as to reduce metal traces in the under-screen sensing area 300, improve transmittance of the under-screen sensing area 300, and improve display effect of the display panel 100. Furthermore, driving circuit 30 may be electrically connected to anode layer 401 of the plurality of light emitting units 40 of sub-screen sensing area 300 through transparent traces 310, so as to further increase the transmittance of sub-screen sensing area 300.

In some embodiments, as shown in fig. 6 and 7, the display panel 100 further includes a passivation layer 307 and a planarization layer 308. The passivation layer 307 is used for protecting other layer structures below and delaying the corrosion speed of the layer structures such as the source drain metal layer 306. The planarization layer 308 is provided with a via hole, the via hole penetrates through the passivation layer 307 and the planarization layer 308, and the anode layer 401 can be electrically connected with the source drain metal layer 306 in the driving circuit 30 through the via hole. Specifically, as shown in fig. 6, the anode layer 401 is connected to the drain 3062 by a via. The planarization layer 308 is disposed above the passivation layer 307, and is used to improve the flatness of the surface of the side of the driving circuit 30 away from the substrate base plate 1, so as to facilitate the fabrication of subsequent films.

Further, as shown in fig. 3 to fig. 7, the display panel 100 further includes an encapsulation layer 405, the encapsulation layer 405 is located on a side of the light emitting layer 4 away from the substrate 1 and covers the light emitting layer 4 and the driving circuit layer 3, and the encapsulation layer 405 may be a thin film encapsulation layer. The encapsulating layer 405 encapsulates the light-emitting layer 4, and reduces the probability of failure of the light-emitting unit 40 and the underlying layer structure due to entry of impurities such as water and oxygen into the light-emitting layer 4. Further, the first color film layer 501, the second color film layer 502 and the black matrix layer 503 are disposed on a side of the encapsulation layer 405 away from the substrate base plate 1.

Further, as shown in fig. 3 and 4, the display panel 100 further includes a touch layer 407 and an optical adhesive layer 504, the touch layer 407 is disposed between the encapsulation layer 405 and the first color film layer 501, the second color film layer 502 and the black matrix layer 503, the optical adhesive layer 504 is located above the first color film layer 501 and the second color film layer 502, the optical adhesive layer 504 may be an adhesive with colorless transparency and high light transmittance, which can improve the transmittance of the display panel 100, can also improve the flatness and the adhesion of the display panel 100, and improve the display effect of the display panel 100.

When the display panel 100 is an organic light emitting display panel, as shown in fig. 6, the organic light emitting display panel includes the substrate 1, the driving circuit 30, and the light emitting layer 4 located on the side of the driving circuit 30 far from the substrate 1. The light emitting layer 4 includes an anode layer 401, a cathode layer 403, and an organic light emitting layer 406 between the anode layer 401 and the cathode layer 403, and the driving circuit 30 is configured to drive electron recombination light emission in the organic light emitting layer 406 in the light emitting layer 4. The organic light emitting layer 406 may be formed by evaporation.

When the display panel 100 is a tft-lcd panel, as shown in fig. 7, the tft-lcd panel includes the substrate 1, a plurality of driving circuits 30, an anode layer 401, a cathode layer 403, and a liquid crystal layer 6 located on a side of the cathode layer 403 away from the substrate 1, the liquid crystal layer 6 includes a plurality of liquid crystal cells, each liquid crystal cell is corresponding to one of the driving circuits 30, and the driving circuit 30 is used for driving liquid crystal molecules in the corresponding liquid crystal cell to generate an oriented deflection. Further, as shown in fig. 7, the driving circuit 30 includes an active layer 301, a first gate insulating layer 302, a gate metal layer 303, a second gate insulating layer 304, an interlayer dielectric layer 305, a source-drain metal layer 306, a passivation layer 307, and a planarization layer 308 on one side of the substrate 1.

Embodiments of the second aspect of the present application provide a display device, which includes the display panel 100 described in any one of the above.

In the embodiment of the present application, the display device includes the display panel 100 in any of the embodiments described above. The display device includes, but is not limited to, a mobile phone, a tablet computer, a display, a television, a picture screen, an advertisement screen, electronic paper, and the like. Since the display device includes the display panel 100, the display device has all the advantages of the display panel 100.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (11)

1. A display panel comprising a display area including an under-screen sensing area and a non-sensing area surrounding the under-screen sensing area, the display panel further comprising:

a substrate base plate;

the light-emitting layer is positioned on one side of the substrate and comprises a plurality of light-emitting units distributed in an array;

a pixel defining layer on one side of the substrate base plate, the pixel defining layer including a plurality of pixel openings in which the plurality of light emitting cells are disposed;

the light shaping assembly is arranged in the sensing area under the screen, the light shaping assembly is positioned on one side, away from the substrate base plate, of the pixel limiting layer, orthographic projections of the light shaping assembly on the substrate base plate are positioned between orthographic projections of two adjacent pixel openings on the substrate base plate, and the light shaping assembly is used for enabling the reflectivity of the sensing area under the screen to be smaller than 6%.

2. The display panel according to claim 1, wherein the light emitting unit comprises an anode layer, an organic light emitting layer and a cathode layer sequentially disposed along a side away from the substrate, and at least some of the cathode layers of the light emitting unit are connected as an integral structure.

3. The display panel of claim 2, wherein the light shaping component comprises at least one light transmissive region opening onto the cathode layer, and an orthographic projection of the light transmissive region on the substrate base plate is located between orthographic projections of the two adjacent pixel openings on the substrate base plate.

4. The display panel of claim 3, wherein the material of the at least one light-transmissive region comprises a Cathode Patterned Material (CPM).

5. The display panel of claim 2, further comprising a CPL layer on a side of the cathode layer away from the substrate.

6. The display panel of claim 5, wherein the light shaping component comprises a reflective metal layer located on a side of the CPL layer away from the substrate base, the reflective metal layer comprising at least one reflective element, an orthographic projection of a reflective element on the substrate base being located between orthographic projections of two adjacent pixel openings on the substrate base.

7. The panel according to claim 6, wherein the CPL layer has a thickness d, an incident angle of an incident light to a side surface of the reflection unit away from the substrate is θ, a wavelength of the incident light is λ, and a predetermined phase coefficient of the incident light is n, where 2d sin θ ═ n (1/2+ n) λ.

8. The display panel of claim 1, wherein the under-screen sensing area comprises a first color film layer on a side of the light shaping assembly away from the substrate base plate, the first color film layer comprising a plurality of first color blocks, the first color blocks corresponding to the light emitting units;

the non-sensing area comprises a black matrix layer, the black matrix layer is positioned on one side of the light-emitting unit far away from the substrate base plate, and the black matrix layer comprises a plurality of hollow areas;

the second color film layer is positioned on one side, far away from the substrate base plate, of the light emitting layer, the second color film layer comprises a plurality of second color blocking blocks, the second color blocking blocks are arranged corresponding to the light emitting units and positioned in the hollow areas, and the first color film layer and the second color film layer are arranged on the same layer.

9. The display panel according to claim 1, wherein a material of the reflective metal layer comprises at least one of indium tin oxide, indium zinc oxide, and indium gallium zinc oxide.

10. The display panel according to claim 1, wherein the display panel further comprises a driving circuit layer located on one side of the substrate, the driving circuit layer comprises a plurality of driving circuits, the plurality of driving circuits and the plurality of light emitting units are correspondingly arranged, the driving circuit comprises an active layer, a first gate insulating layer, a gate metal layer, a second gate insulating layer, an interlayer dielectric layer and a source and drain metal layer, the gate metal layer comprises a gate, and the source and drain metal layer comprises a source and a drain.

11. A display device characterized by comprising the display panel according to any one of claims 1 to 10.

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