Display panel and display device

Abstract

This invention provides a display panel and a display device. The display panel includes: a substrate; an array layer on the substrate; a display layer on the side of the array layer facing away from the substrate, the display layer including a light-emitting component; a color filter layer on the side of the display layer facing away from the array layer, the color filter layer including a light-shielding layer and a color resist, the color resist being disposed corresponding to the light-emitting component; a protective layer on the color filter layer; wherein the light-shielding layer includes a first light-shielding portion forming an imaging aperture; a first metal portion, at least overlapping the first light-shielding portion of the light-shielding layer; and a light-sensing sensor layer on the side of the color filter layer facing away from the protective layer, for detecting the image formed by the imaging aperture. This invention also provides a display device including the display panel. This invention can improve the imaging effect of the imaging aperture, improve the quality of the image, and improve the accuracy of light-sensing recognition.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a display panel and a display device. Background Technology

[0002] Fingerprints are innate in everyone. With the development of technology, various display devices with fingerprint recognition functions have appeared on the market, such as mobile phones, tablets, and smart wearable devices. Before operating a display device with fingerprint recognition function, users only need to touch the display device with their finger to verify permissions, simplifying the permission verification process. Furthermore, as the application scenarios of fingerprint recognition function gradually increase, the fingerprint recognition area has gradually evolved from partial area to full-screen recognition.

[0003] In existing display devices based on optical fingerprint recognition technology, the photosensitive sensor is formed based on a semiconductor device. Fingerprint detection is achieved by utilizing the leakage current generated when the semiconductor device is exposed to light. Specifically, the light generated by the fingerprint recognition light source is reflected off the surface touched by the finger on the display device, and the reflected light illuminates the photosensitive sensor. The photosensitive sensor detects the light intensity caused by the fluctuations in fingerprint intensity, thereby generating a fingerprint spectrum. However, the accuracy of fingerprint recognition in existing technologies needs further improvement.

[0004] Therefore, providing a display device to improve the accuracy of fingerprint recognition on a display panel is a problem to be solved in this field. Summary of the Invention

[0005] In view of this, the present invention provides a display panel and a display device.

[0006] This invention provides a display panel, comprising:

[0007] Substrate;

[0008] An array layer located on the substrate;

[0009] A display layer located on the side of the array layer opposite to the substrate, the display layer including light-emitting components;

[0010] A color filter layer is located on the side of the display layer opposite to the array layer. The color filter layer includes a light-shielding layer and a color resist, and the color resist is disposed corresponding to the light-emitting component.

[0011] A protective layer located on the color filter layer;

[0012] The light-shielding layer includes a first light-shielding portion, which forms an imaging aperture.

[0013] The first metal portion overlaps at least with the first light-shielding portion of the light-shielding layer;

[0014] A light sensor layer, located on the side of the color filter layer opposite to the protective layer, is used to detect the image formed by the imaging aperture.

[0015] The present invention also provides a display device including the display panel.

[0016] Compared with existing technologies, the present invention can improve the imaging effect of the imaging pinhole, improve the quality of the imaging image, and improve the accuracy of light sensing recognition. Attached Figure Description

[0017] Figure 1 This is a top view of a display panel provided in an embodiment of the present invention;

[0018] Figure 2 It is along Figure 1 A partial cross-sectional view along the AA direction;

[0019] Figure 3 This is a top view of the color filter layer of the display panel provided in an embodiment of the present invention;

[0020] Figure 4 This is a top view of another display panel provided in an embodiment of the present invention;

[0021] Figure 5 yes Figure 4 A magnified view of a portion of the display panel shown;

[0022] Figure 6 yes Figure 5 The diagram shows a cross-sectional view of the display panel along the BB direction;

[0023] Figure 7 yes Figure 4 Another enlarged view of the display panel shown;

[0024] Figure 8 It is along Figure 1 Another local cross-sectional view along the AA direction;

[0025] Figures 9-12 Cross-sectional views of different display panels provided in embodiments of the present invention;

[0026] Figure 13 This is a top view of another display panel provided in an embodiment of the present invention.

[0027] Figure 14 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Detailed Implementation

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] It should be noted that specific details are set forth in the following description to provide a full understanding of the invention. However, the invention can be practiced in many ways other than those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0030] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0031] It should be noted that the directional terms such as "upper," "lower," "left," and "right" used in the embodiments of the present invention are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of the present invention. Furthermore, in the context, it should be understood that when it is mentioned that an element is formed "upper" or "lower" of another element, it can not only be formed directly "upper" or "lower" of the other element, but also indirectly "upper" or "lower" of the other element through an intermediate element.

[0032] Furthermore, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the figures denote the same or similar structures, and therefore repeated descriptions of them will be omitted. Terms describing position and direction in this invention are illustrative based on the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this invention. The accompanying drawings of this invention are only used to illustrate relative positional relationships; the layer thicknesses of certain parts are exaggerated for ease of understanding, and the layer thicknesses in the drawings do not represent the actual proportional relationships of layer thicknesses. Moreover, the embodiments and features in the embodiments of this invention can be combined with each other unless otherwise specified. The accompanying drawings of the various embodiments in this application use the same reference numerals. Furthermore, the similarities between the various embodiments will not be repeated.

[0033] like Figure 1 and Figure 2 As shown, Figure 1 This is a top view of a display panel provided in an embodiment of the present invention. Figure 2 For along Figure 1 A partial cross-sectional view along the AA direction, wherein the cross-section is perpendicular to the plane where the display panel is located.

[0034] Optionally, the display panel 100 is divided into a display area AA and a non-display area NA surrounding the display area AA. This is understandable. Figure 1 The midpointed outline is used to indicate the boundary between the display area AA and the non-display area NA. The display area AA is the area of ​​the display panel used to display the image, and it typically includes multiple pixel units arranged in an array. Each pixel unit includes a corresponding light-emitting device (e.g., a diode) and control elements (e.g., thin-film transistors that constitute the pixel driving circuit). The non-display area NA surrounds the display area AA and typically includes peripheral driving elements, peripheral traces, and a fan-out area.

[0035] Display panel 100 includes a substrate 110; wherein the substrate 110 (i.e., the substrate base) may be flexible, and thus stretchable, foldable, bendable, or rollable, such that the flexible display panel may be stretchable, foldable, bendable, or rollable. The substrate 110 may be formed of any suitable insulating material having flexibility. The substrate 110 serves to block oxygen and moisture, prevent moisture or impurities from diffusing through the flexible substrate, and provide a flat surface on the upper surface of the flexible substrate. For example, it may be formed of polymeric materials such as polyimide (PI), polycarbonate (PC), polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyaryl compounds (PAR), or fiberglass reinforced plastic (FRP), and the substrate 110 may be transparent, translucent, or opaque. Optionally, the display panel may also include a buffer layer (not shown) located on the substrate 110, the buffer layer potentially covering the entire upper surface of the substrate.

[0036] An array layer 200 is located on the substrate 110; specifically, the array layer 200 is located on the side of the substrate 110 facing the display surface or touch surface of the display panel 100. The array layer 200 may include a plurality of thin film transistors 210 (TFTs) and pixel circuits composed of thin film transistors for light-emitting components in the display layer.

[0037] This invention describes the structure of a top-gate thin-film transistor as an example. The thin-film transistor layer 210 includes an active layer 211 located on a substrate 110. The active layer 211 can be made of amorphous silicon, polycrystalline silicon, or metal oxide, etc. When the active layer 211 is made of polycrystalline silicon, it can be formed using low-temperature amorphous silicon technology, that is, amorphous silicon material is melted by laser to form polycrystalline silicon material. In addition, various methods such as rapid thermal annealing (RTA), solid-state crystallization (SPC), excimer laser annealing (ELA), metal-induced crystallization (MIC), metal-induced lateral crystallization (MILC), or continuous lateral solidification (SLS) can also be used. The active layer 211 also includes a source region and a drain region formed by doping with N-type or P-type impurity ions, and a channel region between the source region and the drain region.

[0038] A gate insulating layer 212 is located on the active layer 211. The gate insulating layer 212 includes an inorganic layer such as silicon oxide or silicon nitride, and may include a single layer or multiple layers.

[0039] A gate 213 is located on the gate insulating layer 212. The gate 213 may comprise a single or multiple layers of gold (Au), silver (Ag), copper (Cu), nickel (Ni), platinum (Pt), palladium (Pd), aluminum (Al), molybdenum (MO), or chromium (Cr), or alloys such as aluminum (Al): neodymium (Nd) alloys and molybdenum (MO): tungsten (W) alloys.

[0040] An interlayer insulating layer 214 is located on the gate 213. The interlayer insulating layer 214 may be formed of an inorganic insulating layer such as silicon oxide or silicon nitride. Of course, in other alternative embodiments of the present invention, the interlayer insulating layer may be formed of an organic insulating material.

[0041] The source electrode 2151 and drain electrode 2152 are located on the interlayer insulating layer 214. The source electrode 2151 and drain electrode 2152 are electrically connected (or bonded) to the source region and drain region respectively through contact holes, which are formed by selectively removing the gate insulating layer 212 and the interlayer insulating layer 214.

[0042] The array layer 200 may also include a passivation layer 220. Optionally, the passivation layer 220 is located on the source electrode 2151 and drain electrode 2152 of the thin-film transistor 210. The passivation layer 220 may be formed of an inorganic material such as silicon oxide or silicon nitride, or it may be formed of an organic material.

[0043] The display panel 100 may also include a planarization layer 230. Optionally, the planarization layer 230 is located on the passivation layer 220. The planarization layer 230 includes an organic material such as acrylic, polyimide (PI) or benzocyclobutene (BCB), and has a planarization effect.

[0044] A display layer 300 is located on the side of the array layer 200 opposite to the substrate 110. The display layer 300 includes light-emitting components. Optionally, the display layer 300 is located on a planarization layer 230. The display layer 300 includes an anode layer 310, an organic light-emitting material 320, and a cathode layer 330 sequentially disposed in a direction away from the substrate 110. The display layer 300 also includes a pixel definition layer 340 located on the side of the anode layer 310 away from the array layer 200. The pixel definition layer 340 may be formed of an organic material such as polyimide (PI), polyamide, benzocyclobutene (BCB), acrylic resin, or phenolic resin, or an inorganic material such as SiNx.

[0045] Optionally, the anode layer 310 includes a plurality of anode patterns corresponding one-to-one with each pixel. The anode patterns in the anode layer 310 are connected to the source electrode 2151 or drain electrode 2152 of the thin-film transistor 210 through vias on the planarization layer 230. The pixel definition layer 340 includes a plurality of openings exposing the anode layer 310, and the pixel definition layer 340 covers the edges of the anode layer 310 patterns. The organic light-emitting material 320 at least partially fills the openings of the pixel definition layer 340 and contacts the anode layer 310.

[0046] Optionally, the anode layer 310, organic light-emitting material 320, and cathode layer 330 defined by the opening of each pixel definition layer 340 constitute the light-emitting component 350 (i.e., Figure 2 As shown in the dashed box, each light-emitting component 350 can emit light of different colors according to different organic light-emitting materials 320. Each light-emitting component 350 constitutes a pixel (or, each light-emitting component and the pixel circuit that controls the light-emitting component together constitute a pixel), and multiple pixels work together to display the image.

[0047] Optionally, the organic light-emitting material 320 can be formed within the openings of the pixel definition layer 340 using methods such as inkjet printing, nozzle printing, or vapor deposition. The cathode layer 330 can be formed on the film layer containing the organic light-emitting material 320 by vapor deposition. Optionally, the cathode layer 330 can also completely cover the organic light-emitting material 320 and the pixel definition layer 340.

[0048] Optionally, the display panel 100 further includes an encapsulation layer 400 located on the display layer 300 and completely covering the display layer 300 to seal the display layer 300. It is understood that some instances of "on" in this embodiment can be interpreted as located "on the side away from the substrate". Optionally, the encapsulation layer 400 is a thin-film encapsulation layer located on the cathode layer 330, including a first inorganic encapsulation layer, a first organic encapsulation layer, and a second inorganic encapsulation layer sequentially disposed along a direction away from the substrate 110. Of course, in other optional embodiments of the present invention, the encapsulation layer may, as needed, include any number of stacked organic and inorganic materials, but at least one layer of organic material and at least one layer of inorganic material are alternately deposited, and the bottom and top layers are composed of inorganic materials.

[0049] Furthermore, the display panel 100 also includes a color filter layer 500 located on the side of the display layer 300 opposite to the array layer 200, the color filter layer 500 including a light-shielding layer 510 and a color resist 520.

[0050] Combination Figure 3 As shown, Figure 3 This is a top view of the color filter layer of the display panel provided in an embodiment of the present invention, where the dotted pattern-filled area is the area covered by the light-shielding layer, and the area enclosed by the rounded rectangle is the area covered by the color filter.

[0051] Specifically, the light-shielding layer 510 is a black matrix (BM). The light-shielding layer 510 can have a mesh structure, with the mesh openings corresponding to the light-emitting components 350, and each mesh opening defining one color resist 520. Different colors of color resists are separated by the light-shielding layer 510. Each color resist 520 corresponds one-to-one with a light-emitting component 350. The color resists 520 include different colors, and corresponding color resists 520 have the same color as the light-emitting component 520.

[0052] It should be noted that the correspondence between the two components mentioned here can be understood as the overlap of the orthographic projections of the two components on the substrate.

[0053] Furthermore, the display panel 100 may also include a protective layer 600 located on the color filter layer 500. Optionally, the protective layer is the outermost film layer of the display panel, and can be a protective cover or cover film. The protective layer can be bonded to adjacent film layers inside the display panel using optically clear adhesive (OCA).

[0054] Optionally, the light-shielding layer 510 includes a first light-shielding portion 511. Figure 2 and Figure 3 (the area enclosed by the dotted circle), the first light-blocking portion 511 forms the imaging aperture 502;

[0055] The display panel 100 also includes a first metal portion 700, which overlaps at least with the first light-shielding portion 511 of the light-shielding layer 510.

[0056] In other words, the first metal part overlaps at least with the edge of the light-shielding layer at the imaging aperture, but does not overlap with or cover the imaging aperture. It is understood that this overlap can be a direct contact overlap.

[0057] The display panel 100 may also include a light sensor layer 800 located on the side of the color filter layer 500 away from the protective layer 600, for detecting the image formed by the imaging aperture 502.

[0058] It is understood that in this embodiment, the location of one membrane layer on one side of another membrane layer includes both the case where the two membrane layers are in contact and the case where they are not in contact. The case where they are not in contact includes the case where the two membrane layers are separated by a certain distance, and the case where there are other membrane layers between the two membrane layers.

[0059] This embodiment improves the imaging effect of the imaging aperture, enhances the quality of the image, and increases the accuracy of light-sensing recognition. The imaging aperture is formed by the first light-shielding portion of the light-shielding layer of the color filter layer, eliminating the need for an additional light-shielding layer for fingerprint recognition imaging, which facilitates thinner designs. Simultaneously, the design of the first metal portion overlapping at least with the area of ​​the light-shielding layer surrounding the imaging aperture strengthens the light-shielding effect of the light-shielding layer, resulting in clearer and more defined edges in the image presented by the imaging aperture.

[0060] Optionally, in this application, the first metal part is located below the light-shielding layer, which can improve the clarity and accuracy of pinhole imaging while avoiding the problems of reflection from the first metal part and the visibility of the pattern.

[0061] Optionally, in some optional embodiments of this application (see this application for details), Figure 2 , Figure 6 , Figures 9-12 In a corresponding embodiment, the first metal portion 700 and the first light-shielding portion 511 of the light-shielding layer 510 overlap in a direction parallel to the plane of the substrate (e.g., the first direction X).

[0062] Optionally, the edge portion of the first metal part 700 is embedded in the first light-shielding portion 511. That is, the sidewall (or end face) of the first metal part 700 and the top surface of the portion connected to the sidewall are embedded in the first light-shielding portion 511.

[0063] Optionally, in some optional embodiments of this application (see this application for details), Figure 2 , Figure 6 , Figures 9-12In a corresponding embodiment, the first light-shielding portion 511 is spaced between the first metal portion 700 and the imaging aperture 502 in a direction parallel to the substrate.

[0064] Furthermore, the light-shielding layer 510 also includes a second light-shielding portion 512, and the first light-shielding portion 511 is located between the second light-shielding portion 512 and the imaging aperture 502.

[0065] The second light-shielding portion 512 is thicker than the first light-shielding portion 511. It can be understood that the thickness referred to here is the thickness of the light-shielding layer in the direction perpendicular to the substrate (i.e.,...). Figure 2 The dimension in the Z direction.

[0066] Optionally, the light-shielding layer 510 can be made of organic materials. The light-shielding layer 510 formed of organic materials is easy to pattern, easy to manufacture, has good film-forming effect, and has a wide range of material choices.

[0067] In addition, in order to achieve better light-blocking effect or to act as a color barrier, the light-blocking layer 510 is relatively thick. Organic materials are easier to manufacture with thicker light-blocking layers and with less stress.

[0068] Furthermore, the inventors discovered through research that in order to ensure that the imaging aperture penetrates the light-shielding layer during the process of patterning the imaging aperture 502, it is necessary to pattern it sufficiently. Since the patterning intensity at different depths of the light-shielding layer is different (for example, the exposure degree and etching rate are different at different depths), the sidewall of the imaging aperture formed by the light-shielding layer will be imaged as a slope.

[0069] The area covered by the slope is the area where the first shading part is located. The thickness of this part is less than that of the second shading part. The first shading part is thinner and has poor shading performance. The image presented by the imaging pinhole is blurry or has interference.

[0070] In other words, if only the light-shielding layer 510 is used as the pinhole imaging aperture 502, since the light-shielding layer 510 is an organic material with a small edge angle, there may be a large area with a low OD value, resulting in a larger "halo" appearing in the real image formed by the pinhole, which affects the imaging effect.

[0071] This embodiment improves the imaging effect of the imaging aperture, enhances image quality, and increases the accuracy of light-sensing recognition. The imaging aperture is formed by the first light-shielding portion of the light-shielding layer within the color filter layer, eliminating the need for an additional light-shielding layer for fingerprint recognition imaging, thus facilitating thinner designs. Simultaneously, the design, where the first metal portion overlaps at least with the area of ​​the light-shielding layer surrounding the imaging aperture, strengthens the light-shielding effect, resulting in clearer and more defined edges in the image presented by the imaging aperture. Furthermore, it solves the aforementioned problems discovered by the inventors, ensuring the performance of the light-shielding layer within the color filter layer and maintaining the yield rate of the imaging aperture manufacturing process, while improving the light transmission problem at the edges of the imaging aperture caused by insufficient light shielding due to a thin light-shielding layer, thereby enhancing image quality.

[0072] Optional, such as Figure 1 As shown, at least a portion of the first metal portion overlaps with the second light-shielding portion. That is, in a direction perpendicular to the substrate 110, the projection of the second light-shielding portion 512 overlaps with the projection of the first metal portion 700.

[0073] Optionally, in some alternative embodiments of this application (where there is no contradiction, reference may be made to the embodiments corresponding to any cross-sectional view of the accompanying drawings), the first shading portion 511 has a slope.

[0074] In a direction perpendicular to the substrate 110 (e.g., the Z direction), the projection of the slope overlaps with the projection of the first metal portion 700.

[0075] It should be noted that the top surface of the first light-shielding portion 511 on the side facing away from the substrate 110 is a slope, which is the aforementioned slope. Optionally, the slope is inclined in the direction of the direction pointing towards the imaging aperture 502, and the slope is inclined towards the substrate 110.

[0076] Optionally, the area covered by the slope is the area where the first shading part is located. In other words, the top surface of the first shading part 511 is the aforementioned slope.

[0077] Optionally, in some optional embodiments of this application (see this application for details), Figure 2 , Figure 6 , Figures 9-12 In the corresponding embodiment, the slope overlaps with the metal part 700 in a direction parallel to the substrate 110, that is, the projection of the slope overlaps with the projection of the first metal part 700.

[0078] like Figures 3-6 As shown, Figure 4 This is a top view of another display panel provided in an embodiment of the present invention. Figure 5 for Figure 4 The image shown is a partial enlarged view of the display panel. Figure 6 for Figure 5 The diagram shows a cross-sectional view of the display panel along the BB direction; the cross-section is perpendicular to the plane containing the display panel. The similarities between this embodiment and the previous embodiment will not be repeated.

[0079] Unlike other display panels, the display panel 100 also includes a touch function layer 900 located between the display layer 300 and the light-shielding layer 510; the first metal part 511 is on the same layer as at least one film layer in the touch function layer 900.

[0080] Specifically, the touch function layer 900 is located on the side surface of the encapsulation layer 400 away from the display layer 300, and the touch function layer 900 may include a stacked touch electrode layer and an insulating layer.

[0081] Optionally, the touch electrode layer 900 includes touch driving electrodes and touch sensing electrodes to form a touch functional layer with mutual capacitance. The touch electrodes are formed directly on the encapsulation layer 400 as a carrier substrate. That is, in this embodiment, the touch structure is on-cell.

[0082] Optionally, the touch function layer includes a first touch electrode layer, an insulating layer, and a second touch electrode layer stacked sequentially, enabling mutual capacitance touch functionality. The materials of the first and second touch electrode layers can be metal or ITO (indium tin oxide), where the metal material can be molybdenum, copper, or nano-silver, etc. The insulating layer can include at least one organic insulating layer, or at least one inorganic insulating layer, or a combination of at least one organic insulating layer and at least one inorganic insulating layer. The organic insulating layer can include a PET (polyethylene terephthalate) insulating layer, and the inorganic insulating layer can include a silicon nitride insulating layer, a silicon oxide insulating layer, or a zirconium oxide insulating layer. The mutual capacitance touch function layer can have electrodes arranged in different directions on the two touch electrode layers, with the electrodes on the two touch electrode layers perpendicular to each other. Since the electrode structures on the two touch electrode layers are on different surfaces, a capacitance node is formed at their intersection. One touch electrode layer can serve as a driving layer, and the other touch electrode layer can serve as a sensing layer. When current flows through a conductor in the driving layer, if there is a signal of capacitance change in the external environment, it will cause a change in the capacitance node on another conductor. The change in capacitance value can be detected by the sensing layer and the connected electronic circuit, and touch positioning is performed based on the measured sensing signal. In other optional embodiments of this application, a self-capacitive touch electrode can also be used, which will not be described in detail here.

[0083] Furthermore, the first metal portion 700 is on the same layer as at least one film layer in the touch functional layer 900. That is, the first metal portion and the film layer in the touch functional layer, which is also made of metal material, are made of the same material and on the same layer.

[0084] Optionally, the touch electrode layer is made of a metal material, and the first metal part 700 is in the same layer and made of the same material as the touch electrode.

[0085] Optionally, the touch function layer 900 includes at least one touch electrode layer 910, which includes touch electrodes formed of a metal mesh. Specifically, the mesh openings of the metal mesh correspond to light-emitting components.

[0086] Optionally, the grid lines of the metal mesh are located within the area covered by the light-shielding layer. This prevents light reflected from the metal mesh from interfering with the display and keeps the electrode pattern visible.

[0087] This embodiment solves the problem of edge sharpness in pinhole imaging without increasing the number of film layers or the manufacturing process. The imaging pinhole is formed by the first light-shielding portion of the light-shielding layer of the color filter layer. The first metal part is made of the same material as the film layer in the touch function layer, which is also made of metal. This eliminates the need for an additional light-shielding layer for fingerprint recognition imaging and for an additional metal layer to set the first metal part, thus facilitating the thinning of the display panel. Furthermore, the combination of the touch function layer and the color filter layer provided in this application ensures that the first metal part and the touch electrodes do not reflect light, preventing damage to the display effect or visibility of the pattern.

[0088] Optional, such as Figure 7 As shown, Figure 7 for Figure 4 Another enlarged view of the display panel shown. The touch function layer 900 includes at least one touch electrode layer 910, which includes touch electrodes formed of a metal mesh. Specifically, the mesh openings of the metal mesh correspond to light-emitting components.

[0089] Optionally, at least a portion of the touch electrode 910 may be reused in the first metal portion 700. That is, the touch electrode 910 and the first metal portion 700 are integrally formed. This simplifies the manufacturing process, reduces costs, and by integrating the touch electrode 910 with the first metal portion 700, the space occupied by the first metal portion 700 is reduced.

[0090] Combination Figure 1 and Figure 8 As shown, Figure 8 For along Figure 1 Another partial cross-sectional view along the AA direction, the cross-section being perpendicular to the plane containing the display panel.

[0091] Unlike the embodiments described above, the display panel 100 further includes a planarization layer 620 located between the first metal portion 700 and the light-shielding layer 510. Specifically, after the touch function layer 900 is fabricated, a planarization layer 620 made of an organic insulating material is applied. Then, a color filter layer 500 is fabricated on the planarization layer 620. Optionally, the color filter layer 500 can be fabricated on another platform and then bonded to the planarization layer 620. The planarization layer 620 provides a flat surface for bonding, which is beneficial for fabrication.

[0092] Furthermore, this embodiment can improve the reliability of the first metal layer reused for touch electrodes. Because many light-shielding layers are themselves conductive, if the first metal layer is part of the touch electrode, it could cause short circuits between different touch electrodes through the light-shielding layer. Therefore, the design of this embodiment obviously avoids the high requirements for the light-shielding layer material and avoids the problem of limited light-shielding layer selection.

[0093] Please refer to Figure 2 , Figure 6 , Figures 8-12 The display panel shown in any of the attached figures, Figures 9-12 These are cross-sectional views of different display panels provided in embodiments of the present invention; wherein the cross-section is perpendicular to the plane in which the display panel is located.

[0094] The first light-shielding portion 511 contacts and covers the first metal portion 700. That is, the first metal portion is located below the light-shielding layer and is one of two adjacent film layers with direct contact with the light-shielding layer. This saves a mask layer and simplifies the manufacturing process. Furthermore, the first light-shielding portion contacts and covers the first metal portion without any gaps, which improves the light-shielding effect and further refines the imaging pinhole rendering accuracy.

[0095] Further, refer to Figure 9 or Figure 11 As shown, the first light-shielding portion 511 is located at the edge of the imaging aperture 502 and ends at the first metal portion 700. That is, the first metal portion 700 provides a metal edge for the imaging aperture 502.

[0096] In this embodiment, when the first light-shielding portion 511 of the light-shielding layer 510 is formed, the first metal portion 700 can form a dam-like structure to intercept and accumulate the material of the light-shielding layer, thereby thickening the material of the light-shielding layer around the imaging aperture 502. Furthermore, the first metal portion 700 itself can also raise the first light-shielding portion 511, indirectly increasing the thickness of the opaque structure formed by the light-shielding layer 510 around the imaging aperture 502, further improving the imaging effect of the imaging aperture.

[0097] like Figures 10-12As shown in any of the accompanying drawings, the color resist 520 covers the imaging aperture 502. Specifically, the color resist 520 at least partially overlaps with the light-shielding layer 510 and with the imaging aperture 502 formed by the first light-shielding portion 511 of the light-shielding layer 510, thereby filling the imaging aperture 502. It should be noted that, in order to ensure the imaging aperture transmits light, each imaging aperture is covered by only one color of color resist.

[0098] This embodiment ensures that light can pass through the imaging aperture while preventing reflections from the first metal part that would make the pattern visible. Even if light is reflected from the side of the aperture by the first metal part, it can be blocked by color blocking.

[0099] Furthermore, such as Figure 12 As shown, at least two imaging apertures 502 are each covered by two different colors of color resist 520. This ensures that images formed by different imaging apertures are formed by different colors of light, avoiding interference between light transmitted through different imaging apertures.

[0100] Furthermore, the light sensor layer 900 detects the images presented by the imaging aperture 502 covered by different color resists 520 at different times.

[0101] Specifically, the light sensor layer includes multiple detection units (sensors) arranged in an array, each corresponding to a pinhole imaging aperture. Optionally, the display panel 100 also includes a control unit (not shown in the figure). The control unit controls the light source to emit light of different colors at different times, and simultaneously controls the detection unit corresponding to the pinhole imaging aperture filled with that color of color resist to detect the image presented by that pinhole. For example, in the first time period, a red light source emits light, and the detection unit corresponding to the pinhole imaging aperture filled with red resist captures the image; in the second time period, a green light source emits light, and the detection unit corresponding to the pinhole imaging aperture filled with green resist captures the image. This embodiment can further improve the accuracy of light detection.

[0102] like Figure 7 or Figure 13 As shown, Figure 13 This is a top view of another display panel provided in an embodiment of the present invention. Three adjacent light-emitting components are arranged in a triangular pattern, with the imaging aperture 502 located in the middle of the triangular pattern formed by the three light-emitting components.

[0103] Specifically, the pixels in the display panel 100 are arranged in a pyramid shape. That is, the light-emitting components in the display panel 100 are arranged along the first direction X to form pixel rows, and multiple pixel rows are arranged along the second direction Y to form a pixel array. Red, green, and blue pixels are alternately arranged in the first direction X. Among them, the adjacent light-emitting components (pixels) in the second direction Y are staggered. That is to say, one light-emitting component is arranged between two light-emitting components in an adjacent row of pixel rows, and has a different color from these two pixels; three adjacent pixels form a pixel unit (as shown in the area circled by the dotted line frame in the figure). The three pixels in a pixel unit are arranged in a pyramid shape, and one pixel in a pixel unit is equivalent to one "mouth" of the "pin" character. The imaging small hole 502 is located in the middle of the pyramid formed by the three light-emitting components, that is, the imaging small hole is surrounded by the three pixels in the pixel unit.

[0104] Through this embodiment, the aperture of the imaging small hole can be increased, and the shielding effect on pixel light emission is relatively small. When setting the imaging small hole, the pixel aperture will not be compressed.

[0105] Optionally, the area of the red pixel in the pixel unit is smaller than that of the pixels of other colors, that is, the area of the red color resistor is smaller than that of the color resistors of other colors. The mesh holes of the light-shielding layer defining the red color resistor are the smallest.

[0106] Optionally, the red pixel is located at a position not adjacent to the other two pixels in the same pixel unit in the first direction X, that is, at the position where the upper "mouth" is located in the pyramid shape.

[0107] In this way, the space for setting the imaging small hole can be further increased, and the effect of improving the pixel display effect can be achieved.

[0108] Optionally, referring to Figure 13 As shown, the imaging small hole 502 is triangular, and the apex of the triangle faces in the opposite direction to the orientation of the pyramid shape. That is to say, the bottom edge of the triangular imaging small hole 502 is parallel to the first direction X, and the bottom edge is adjacent to the pixel of the upper "mouth" character in the corresponding pyramid shape. The apex of the triangular imaging small hole 502 opposite to the bottom edge points to the space between the two pixels adjacent in the first direction X in the pixel unit.

[0109] Through this embodiment, the pixel design is matched with the shape and position of the imaging small hole. The imaging effect and layout effect of the imaging small hole are further improved.

[0110] It can be understood that the shape mentioned in this embodiment is the shape presented when looking down at the display panel, that is, the shape of the orthographic projection of the component on the substrate.

[0111] Optionally, referring to Figure 5 or Figure 7As shown, the first metal part is a closed pattern surrounding the imaging aperture. This effectively blocks light leakage from different directions and promotes the structural stability of the imaging aperture, forming a structure similar to an edging for the imaging aperture. Optionally, the first metal part can be a closed ring surrounding the imaging aperture, which facilitates stress relief.

[0112] In addition, for any of the above embodiments, optionally, the display panel 100 also includes a fingerprint recognition device, which includes the aforementioned light sensor layer 800.

[0113] The display panel in this invention can be an organic light-emitting display panel, and the light-emitting component can be reused as the light source for the fingerprint recognition device (photosensor layer). This ensures that the display panel does not need a separate light source for the fingerprint recognition device, maintaining a simple display panel structure and layer relationships, and facilitating a thinner and lighter design. Alternatively, the display panel provided in this embodiment can also include a fingerprint recognition light source (not shown in the figure), which provides a separate light source for the photosensor layer, ensuring that the fingerprint recognition device can have multiple functions. For example, the fingerprint recognition light source can be an infrared light source, ensuring that the fingerprint recognition device can not only recognize fingerprints but also identify the blood flow status of the human body and monitor human health.

[0114] The present invention also provides a display device, including the display panel provided by the present invention. For example... Figure 14 As shown, Figure 14 This is a schematic diagram of a display device provided in an embodiment of the present invention. The display device 1000 includes the display panel 100 provided in any of the above embodiments of the present invention. Figure 12 This embodiment uses a mobile phone as an example to illustrate the display device 1000. It is understood that the display device provided in this embodiment can be any other display device with display function, such as a computer, television, or vehicle-mounted display device; this invention does not impose specific limitations on this. The display device provided in this embodiment has the beneficial effects of the display panel provided in this embodiment. For details, please refer to the specific descriptions of the display panel in the above embodiments; these will not be repeated here.

[0115] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A display panel, characterized in that, include: Substrate; An array layer located on the substrate; A display layer located on the side of the array layer opposite to the substrate, the display layer including light-emitting components; A color filter layer is located on the side of the display layer opposite to the array layer. The color filter layer includes a light-shielding layer and a color resist, and the color resist is disposed corresponding to the light-emitting component. A protective layer located on the color filter layer; The light-shielding layer includes a first light-shielding portion, which forms an imaging aperture. A first metal portion, which overlaps with the first light-shielding portion of the light-shielding layer; The display panel must satisfy at least one of the following characteristics: It also includes a touch function layer located between the display layer and the light-shielding layer; The first metal portion is in the same layer as at least one film layer in the touch functional layer, and / or, The first metal portion and the first light-shielding portion overlap in a direction parallel to the plane of the substrate, or... The first shading portion has a slope; In a direction perpendicular to the substrate, the projection of the slope overlaps with the projection of the first metal portion, or... The first shading portion has a slope; In a direction parallel to the substrate, the projection of the slope overlaps with the projection of the first metal portion, and / or, In a direction parallel to the substrate, the first metal portion is spaced from the imaging aperture by the first light-shielding portion, or... The edge of the first metal part is embedded in the first light-shielding portion, and / or, The light-shielding layer further includes a second light-shielding portion, and the first light-shielding portion is located between the second light-shielding portion and the imaging aperture. Wherein, the thickness of the second light-shielding portion is greater than that of the first light-shielding portion; at least a portion of the first metal portion overlaps with the second light-shielding portion, or, The light-shielding layer further includes a second light-shielding portion, and the first light-shielding portion is located between the second light-shielding portion and the imaging aperture. Wherein, the thickness of the second light-shielding portion is greater than that of the first light-shielding portion, and / or, The color resist covers the imaging aperture.

2. The display panel as described in claim 1, characterized in that, The touch function layer includes at least one touch electrode layer, the touch electrode layer including touch electrodes formed of a metal mesh, and at least a portion of the touch electrodes are reused as the first metal part.

3. The display panel as described in claim 2, characterized in that, The grid lines of the metal mesh are located within the area covered by the light-shielding layer.

4. The display panel as described in claim 1, characterized in that, The display panel also includes a flat layer located between the first metal portion and the light-shielding layer.

5. The display panel as described in claim 1, characterized in that, The first light-shielding portion contacts and covers the first metal part.

6. The display panel as described in claim 5, characterized in that, The first light-shielding portion is located at the edge of the imaging aperture and ends at the first metal portion.

7. The display panel as described in claim 1, characterized in that, At least two imaging apertures are each covered by two different colors of color resist.

8. The display panel as described in claim 7, characterized in that, It also includes a light sensor layer, located on the side of the color filter layer opposite to the protective layer, for detecting the image formed by the imaging aperture; The light sensor layer detects the images presented by the imaging aperture covered by different colored color resists at different times.

9. The display panel as claimed in claim 1, characterized in that, The three light-emitting components that are adjacent to each other are arranged in a triangular pattern, and the imaging aperture is located in the middle of the triangular pattern formed by the three light-emitting components.

10. The display panel as claimed in claim 9, characterized in that, The imaging aperture is triangular, wherein the apex of the triangle faces in the opposite direction to the triangular shape.

11. The display panel as claimed in claim 1, characterized in that, The first metal part is a closed pattern surrounding the imaging aperture.

12. A display device, characterized in that, include: The display panel according to any one of claims 1-11.

Images