Display panel and display device

Abstract

A display panel, comprising: a substrate; a plurality of light-emitting devices, each of the light-emitting devices comprising a first electrode, a light-emitting portion and a second electrode which are stacked in a direction away from the substrate; and at least one light-shielding portion located between the plurality of light-emitting devices and the substrate. In an orthographic projection on the substrate, each light-shielding portion extends along a boundary of the first electrode of one of the light-emitting devices, and the light-shielding portion is capable of transmitting an electrical signal.

Description

Display panel and display device TECHNICAL FIELD

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

[0002] Organic Light Emitting Diode (OLED) display technology is a technology that uses light-emitting materials to emit light under the drive of current to realize display. OLED display has the advantages of ultra-light, ultra-thin, high brightness, large viewing angle, low voltage, low power consumption, fast response, high definition, shock resistance, bendable, low cost, simple process, less use of raw materials, high luminous efficiency, and wide temperature range.

[0003] SUMMARY

[0004] In one aspect, a display panel is provided. The display panel comprises: a substrate; a plurality of light-emitting devices, each of the light-emitting devices comprising a first electrode, a light-emitting part, and a second electrode which are stacked in a direction away from the substrate; at least one light-shielding part between the plurality of light-emitting devices and the substrate; in an orthographic projection onto the substrate, each of the light-shielding parts is arranged along a boundary of the first electrode of one of the light-emitting devices, and the light-shielding part is capable of transmitting an electrical signal.

[0005] In some embodiments, the light-shielding part is an annular structure arranged around the first electrode.

[0006] In some embodiments, the light-shielding part comprises a first boundary and a second boundary, the first boundary and the second boundary both extend along the boundary of the first electrode, and the first boundary is closer to the center of the first electrode than the second boundary.

[0007] In the orthographic projection onto the substrate, the light-shielding part is located outside the first electrode, and the first boundary of the light-shielding part coincides with the boundary of the first electrode.

[0008] In some embodiments, the light-shielding part comprises a first boundary and a second boundary, the first boundary and the second boundary both extend along the boundary of the first electrode, and the first boundary is closer to the center of the first electrode than the second boundary.

[0009] In the orthographic projection onto the substrate, the boundary of the first electrode is located between the first boundary and the second boundary of the light-shielding part.

[0010] In some embodiments, the display panel further comprises: a source-drain metal layer between the plurality of light-emitting devices and the substrate; wherein the light-shielding part is arranged in the source-drain metal layer.

[0011] In some embodiments, the source-drain metal layer includes a first signal line, the first signal line includes a first sub-portion and a second sub-portion connected to each other; in the orthographic projection onto the substrate, the first sub-portion is arranged along a boundary of a first electrode of one of the light emitting devices; the second sub-portion is arranged along a length direction of the first signal line; and the first sub-portion serves as the light shielding portion.

[0012] In some embodiments, the first signal line is a data line or a VDD line.

[0013] In some embodiments, the first sub-portion is annular, and the first sub-portion and the second sub-portion are alternately connected in the length direction of the first signal line.

[0014] In some embodiments, a width of the first sub-portion is greater than a width of the second sub-portion.

[0015] In some embodiments, a ratio of the width of the first sub-portion to the width of the second sub-portion is greater than 1 and less than or equal to 2.08.

[0016] In some embodiments, the plurality of light emitting devices includes a plurality of blue light emitting devices; and in the orthographic projection onto the substrate, a boundary of a first electrode of each of the blue light emitting devices is correspondingly provided with the light shielding portion.

[0017] In some embodiments, the display panel further includes a light shielding layer between the plurality of light emitting devices and the substrate, and the light shielding portion is arranged in the light shielding layer.

[0018] In some embodiments, the display panel further includes a pixel circuit layer between the plurality of light emitting devices and the light shielding layer, the pixel circuit layer includes a plurality of transistors; and the light shielding layer further includes a plurality of light shielding patterns, each of the light shielding patterns covers a channel region of at least one of the transistors in the orthographic projection onto the substrate.

[0019] In some embodiments, the light shielding layer further includes a connecting portion arranged along a preset direction, for connecting one of the light shielding portions and one of the light shielding patterns arranged in the preset direction.

[0020] In some embodiments, a width of the light shielding portion is greater than a width of the connecting portion.

[0021] In some embodiments, a ratio of the width of the light shielding portion to the width of the connecting portion is greater than 1 and less than or equal to 2.08.

[0022] In some embodiments, the plurality of light emitting devices comprises blue light emitting devices; a boundary of a first electrode of at least one of the blue light emitting devices corresponds to the light shielding portion.

[0023] In some embodiments, the display panel comprises a target region for disposing a light sensing component; the plurality of light emitting devices comprises a plurality of blue light emitting devices, and a first electrode of at least one of the blue light emitting devices located in the target region corresponds to the light shielding portion.

[0024] In another aspect, a display device is provided, comprising: the display panel described in the above embodiments; and a light sensing component located at a backlight side of the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present disclosure, the following will briefly introduce the drawings needed to be used in some embodiments of the present disclosure. Obviously, the drawings described in the following description are only some drawings of the embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art according to these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams, and are not limited to the actual size, actual process, etc. of the products involved in the embodiments of the present disclosure.

[0026] FIG. 1 is a structural diagram of a display device according to some embodiments;

[0027] FIG. 2A is a structural diagram of a display panel according to some embodiments;

[0028] FIG. 2B is an equivalent circuit diagram of a pixel driving circuit according to some embodiments;

[0029] FIG. 3 is a structural diagram of another display device according to some embodiments;

[0030] FIG. 4 is a structural diagram of another display panel according to some embodiments;

[0031] FIG. 5 is a film layer stacking diagram of a light shielding portion and a first electrode according to some embodiments;

[0032] FIG. 6 is a film layer diagram of a source-drain metal layer according to some embodiments;

[0033] FIG. 7A is a distribution diagram of a first signal line and a first electrode of a light emitting device according to some embodiments;

[0034] FIG. 7B is a distribution diagram of a plurality of light emitting devices according to some embodiments;

[0035] FIG. 8 is a structural diagram of another display panel according to some embodiments;

[0036] FIG. 9 is a structural diagram of a light emitting device according to some embodiments. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings. It should be apparent that the described embodiments are only a part of the embodiments of the present disclosure, and not all the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present disclosure.

[0038] Unless otherwise required by context, the term "comprise" and other forms of the term "comprise", such as "comprises" and "comprising", and other forms of the term "comprise", are used throughout the specification and claims in an open, inclusive sense, that is, as "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to mean that a particular feature, structure, material, or characteristic included in at least one embodiment or example of the present disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics described can be included in any suitable manner in any one or more embodiments or examples.

[0039] Hereinafter, the terms "first", "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the embodiments of the present disclosure, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0040] In describing some embodiments, "coupled" and "connected," along with their derivatives, can be used. It should be understood that these terms are not intended as synonyms for each other. Rather, "connected" can be used to indicate that two or more elements are in direct physical or electrical contact with each other. "Coupled" can be used to indicate that two or more elements are in either physical or electrical contact with each other, even at a distance. As will be apparent, "coupled" can also be used to indicate that two or more elements cooperate or interact with each other to

[0041] "at least one of A, B, and C" has the same meaning as "at least one of A, B, or C" and includes the following combinations: only A, only B, only C, A and B, A and C, B and C, and A and B and C.

[0042] "A and / or B" includes the following combinations: A alone, B alone, and A and B together.

[0043] Additionally, the use of "based on" means "based at least in part on," and not necessarily "based exclusively on."

[0044] It will be understood that when a layer or element is referred to as being "on" another layer or substrate, it can be directly on the other layer or substrate or intervening layers can also be present.

[0045] Exemplary embodiments are described herein with reference to the drawings, which are in schematic cross-sectional and / or plan views. Layer thicknesses and region dimensions are exaggerated in the drawings for clarity. As such, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and / or tolerances, are to be expected. Thus, the exemplary embodiments should not be construed as limited to the particular shapes of regions as illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an etched region illustrated as a rectangle will typically have rounded corners and / or irregular edges due to manufacturing techniques. Thus, the regions illustrated in the figures are schematic and their shapes are not intended to illustrate the precise shape of a region of a device and are not intended to limit the exemplary embodiments to a precise geometric shape. The exemplary embodiments are therefore to be understood as not necessarily limited by the precise shapes of the regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing.

[0046] Some embodiments of the present disclosure provide a display device, which can be any display device displaying images whether moving (e.g., video) or fixed (e.g., still image) and whether text or graphics. More specifically, it is contemplated that the display device of the embodiments can be implemented in or associated with a variety of electronic devices such as, but not limited to, mobile telephones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 players, camcorders, game consoles, wrist watches, clocks, calculators, television monitors, flat-panel displays, computer monitors, auto displays (e.g., odometer display, etc.), cockpit controls and / or displays, display of camera views (e.g., display of a rear view camera in a vehicle), electronic photographs, electronic billboards or signs, projectors, architectural structures, packaging, and aesthetic structures (e.g., display of images on a piece of jewelry) and the like.

[0047] FIG. 1 is a structural diagram of a display device according to some embodiments. As shown in FIG. 1, the display device 1000 includes a frame 100, a cover plate 200, a display panel 300, a circuit board 400, and other electronic components including a camera.

[0048] The longitudinal section of the frame 100 is in a U shape, the display panel 300, the circuit board 400, and other electronic components including a camera are arranged in the frame 100, the circuit board 400 is located between the display panel 300 and the frame 100, and the cover plate 200 is located on the light-out side of the display panel 300. The side of the display panel 300 for displaying images is the light-out side of the display panel 300, and the side of the display panel 300 facing away from the light-out side of the display panel 300 is the back light side of the display panel 300.

[0049] For example, the circuit board 400 is located on the back light side of the display panel 300, and the circuit board 400 is electrically connected to the display panel 300. The circuit board 400 is configured to provide driving signals for the display panel 300, thereby ensuring normal display of the display panel 300.

[0050] Exemplarily, the display panel 300 can be an organic light emitting diode (OLED) display panel, a quantum dot light emitting diodes (QLED) display panel, a micro light emitting diodes (Micro LED) display panel, a mini light emitting diodes (Mini LED) display panel, or the like, which are not limited in the present disclosure. Some embodiments of the present disclosure will be described illustratively below taking the display panel 300 as an OLED display panel.

[0051] In some examples, as shown in FIG. 2A, the display panel 300 includes a substrate 1 and a plurality of light emitting devices 2.

[0052] The type of the substrate 1 can be various, which can be selected according to actual needs.

[0053] Exemplarily, the substrate 1 can be a rigid substrate. The rigid substrate can be a glass substrate or a polymethyl methacrylate (PMMA) substrate, or the like.

[0054] Exemplarily, the substrate 1 can be a flexible substrate. The flexible substrate can be a polyethylene terephthalate (PET) substrate, a polyethylene naphthalate two formic acid glycol ester (PEN) substrate, or a polyimide (PI) substrate, or the like. In this case, the display panel 300 can realize flexible display, for example.

[0055] Optionally, the substrate 1 can be formed as a single layer, a double layer, or a multi-layer, which is not limited in the embodiments of the present disclosure.

[0056] In some examples, as shown in FIG. 2A, the display panel 300 further includes a pixel circuit layer 10 between the substrate 1 and the light emitting device 2.

[0057] It can be understood that the pixel circuit layer 10 refers to a film layer in which a plurality of pixel driving circuit arrays are arranged, including a plurality of patterned conductive layers and insulating layers. Exemplarily, as shown in FIG. 2A, the pixel circuit layer 10 includes a plurality of pixel driving circuits 101 and a plurality of signal lines, and the like.

[0058] The pixel driving circuit 101 is generally composed of electronic devices such as transistors (TFTs), capacitors, and the like. For example, the pixel driving circuit 101 can specifically be of a structure such as “2T1C”, “6T1C”, “7T1C”, “6T2C”, or “7T2C”. Here, “T” represents a transistor, for example, a thin film transistor. The number before “T” represents the number of transistors. “C” represents a capacitor, and the number before “C” represents the number of capacitors. In some embodiments of the present disclosure, only one transistor 1011 is schematically shown in the accompanying drawings, as shown in FIG. 2A. For example, the transistor 1011 can be a driving transistor.

[0059] Specifically, as shown in FIG. 2A, the pixel circuit layer 10 can include a semiconductor layer 102, a first gate insulating layer 103, a gate metal layer 104, a second gate insulating layer 105, and a source-drain metal layer 106. The semiconductor layer 102 includes active layers of a plurality of thin film transistors 1011; the gate metal layer 104 includes gates of the plurality of thin film transistors 1011; and the source-drain metal layer 106 includes sources and drains of the plurality of thin film transistors 1011.

[0060] It should be noted that, according to the on-off type, the transistor 1011 includes a P-type transistor and an N-type transistor. The transistor 1011 provided by the embodiments of the present disclosure is not limited in this regard, and can be a P-type transistor or an N-type transistor, which is selected and arranged according to a specific implementation. According to the film layer structure type, the transistor 1011 includes a bottom-gate transistor and a top-gate transistor, and the transistor 1011 provided by the embodiments of the present disclosure is not limited in this regard. The following embodiments take the top-gate transistor as an example. In addition, the plurality of transistors 1011 can include a low-temperature polysilicon transistor (LTPS TFT) and / or an oxide transistor (Oxide TFT). The embodiments of the present disclosure are not limited in this regard.

[0061] In some examples, the pixel driving circuit 101 is of a 7T1C structure. That is, the pixel driving circuit 101 is composed of 7 transistors and 1 capacitor.

[0062] Specifically, as shown in FIG. 2B, the pixel driving circuit 101 includes a switching transistor T1, a driving transistor T2, a compensation transistor T3, a first light-emitting control transistor T4, a second light-emitting control transistor T5, a first reset transistor T6, a second reset transistor T7, and a storage capacitor Cst.

[0063] When the level of the reset signal transmitted by the reset signal terminal RST is an effective level, the first reset transistor T6 and the second reset transistor T7 can be turned on under the control of the reset signal, receive the initial signal transmitted by the initial signal terminal Vinit, and the first reset transistor T6 can transmit the initial signal to one end of the storage capacitor Cst to reset it, and the second reset transistor T7 can transmit the initial signal to the second electrode of the second reset transistor T7 to reset it. Here, the driving transistor T2 can be turned on under the control of the initial signal.

[0064] When the level of the scan signal transmitted by the scan signal terminal Gate is an effective level, the switch transistor T1 and the compensation transistor T3 can be turned on under the control of the scan signal, and the data signal transmitted by the data signal terminal Data can be transmitted to the control electrode of the driving transistor T2 through the switch transistor T1, the driving transistor T2, and the compensation transistor T3 in sequence to charge the control electrode of the driving transistor T2 until the driving transistor T2 is turned off. At this time, the compensation of the threshold voltage of the driving transistor T2 is completed.

[0065] When the level of the enable signal transmitted by the enable signal terminal EM is an effective level, the first light-emitting control transistor T4 and the second light-emitting control transistor T5 can be turned on under the control of the enable signal, receive the first voltage signal from the first voltage signal terminal VDD, and the driving transistor T2 can generate a driving signal according to the data signal and the first voltage signal and transmit the driving signal to the second electrode of the second reset transistor T7.

[0066] For example, as shown in FIG. 2A, a plurality of light-emitting devices 2 are arranged on the side of the pixel circuit layer 10 away from the substrate 1.

[0067] The light-emitting device 2 and the pixel driving circuit 101 are electrically connected. The pixel driving circuit 101 can provide a driving signal for the light-emitting device 2 to drive the light-emitting device 2 to emit light.

[0068] For example, the plurality of pixel driving circuits 101 and the plurality of light-emitting devices 2 can be one-to-one coupled. For another example, one pixel driving circuit 101 can be coupled with a plurality of light-emitting devices 2. For another example, a plurality of pixel driving circuits 101 can be coupled with one light-emitting device 2.

[0069] For example, the plurality of pixel driving circuits 101 and the plurality of light-emitting devices 2 can be one-to-one coupled. For another example, one pixel driving circuit 101 can be coupled with a plurality of light-emitting devices 2. For another example, a plurality of pixel driving circuits 101 can be coupled with one light-emitting device 2.

[0070] For example, the plurality of pixel driving circuits 101 and the plurality of light-emitting devices 2 can be one-to-one coupled. For another example, one pixel driving circuit 101 can be coupled with a plurality of light-emitting devices 2. For another example, a plurality of pixel driving circuits 101 can be coupled with one light-emitting device 2.

[0071] Exemplarily, in the display panel 300, the pixel driving circuit 101 can generate a driving signal and transmit the driving signal to the corresponding light emitting device 2 to control the light emitting state of the light emitting device 2. The light emitting state includes, for example, whether the light emitting device 2 emits light or the luminance of the light emitting device 2. The light emitting states of the plurality of light emitting devices 2 are collectively controlled by the plurality of pixel driving circuits 101, and the light emitted by the plurality of light emitting devices 2 cooperates with each other, so that the display panel 300 realizes image display.

[0072] Exemplarily, the light emitting device 2 can be an OLED light emitting device.

[0073] As shown in FIG. 2A, each light emitting device 2 includes a first electrode 201, a light emitting part 202 and a second electrode 203 which are sequentially stacked in a direction away from the substrate 1.

[0074] Exemplarily, the first electrode 201 is an anode, and the second electrode 203 is a cathode. Alternatively, the first electrode 201 is a cathode, and the second electrode 203 is an anode. In the embodiments of the present disclosure, the first electrode 201 is an anode, and the second electrode 203 is a cathode as an example. The first electrode 201 of the light emitting device 2 and the drain electrode of the transistor 1011 used as a driving transistor in the pixel driving circuit 101 are electrically connected.

[0075] When a voltage is applied on the first electrode 201 and the second electrode 203 respectively, an electric field can be generated between the first electrode 201 and the second electrode 203, which can drive the movement of electrons and holes and form excitons by recombination in the light emitting part 202. The excitons radiate transition light to produce light emitting phenomenon, i.e. electroluminescence.

[0076] Specifically, the pixel driving circuit 101 transmits a driving signal to the first electrode 201 of the light emitting device 2, and the driving signal can cooperate with a second voltage signal provided by a second voltage signal terminal VSS coupled with the second electrode 203 of the light emitting device 2, so as to drive the normal light emission of the light emitting device 2.

[0077] Exemplarily, the light emitting part 202 can include an electroluminescent (EL) layer. In other examples, the light emitting part 202 can include one or more of an election transporting layer (ETL), an election injection layer (EIL), a hole transporting layer (HTL), and a hole injection layer (HIL) in addition to the EL layer. In the case where the display panel 300 is an organic electroluminescent display panel, the EL layer is an organic EL layer. In the case where the display panel 300 is a quantum dot electroluminescent display panel, the EL layer is a quantum dot EL layer.

[0078] In some examples, as shown in FIG. 2A, the display panel 300 further includes a pixel defining layer 20. The pixel defining layer 20 is located on the side of the pixel circuit layer 10 away from the substrate 1. The pixel defining layer 20 defines a plurality of first openings 210.

[0079] Exemplarily, the pixel defining layer 20 has a planar structure similar to a grid, and the plurality of first openings 210 form the mesh of the grid structure.

[0080] Exemplarily, the shape of the first opening 210 can be various, such as a circle, a quadrilateral, a pentagon, a hexagon, etc., and the embodiments of the present disclosure do not limit the shape of the first opening 210.

[0081] Exemplarily, the material of the pixel defining layer 20 can include at least one of an inorganic insulating material and an organic insulating material. For example, the material of the pixel defining layer 20 can be silicon nitride (SiNx), silicon oxynitride (SiON), or silicon oxide (SiOx), etc.

[0082] Exemplarily, as shown in FIG. 2A, at least part of a light emitting device 2 is disposed in a first opening 210.

[0083] Exemplarily, a first opening 210 exposes the entire first electrode 201 of a light emitting device 2. Exemplarily, a first opening 210 exposes part of the anode first electrode 201 of a light emitting device 2, and the other part of the first electrode 201 is covered by the pixel defining layer 20, as shown in FIGS. 3 and 4. The embodiments of the present disclosure do not limit the above.

[0084] In some examples, as shown in FIG. 3, the display device 1000 further includes an ambient light sensor (ALS) 500 located on the back light side of the display panel 300.

[0085] The photosensitive component 500 is used to perceive the intensity change of the ambient light in which the display device 1000 is located, and a processing chip in the display device 1000, such as a microcontroller unit (MCU), can make corresponding adjustment on the screen brightness of the display device 1000 according to the intensity change of the ambient light. The processing chip refers to the processing chip in the display device containing the photosensitive component 500, i.e., the processing chip of the whole machine, which can control not only the display panel 300 but also other components in the display device 1000.

[0086] In addition, the number of photosensitive components 500 can be selected according to actual needs.

[0087] It can be understood that the display panel 300 will also emit light during use. In order to avoid the light emitted by the display panel 300 itself interfering with the intensity of the external ambient light perceived by the photosensitive component 500, the working time of the photosensitive component 500 is set to be staggered with the working time of the light emitting device 2 in the display panel 300. That is, when the light emitting device 2 is in a light emitting state, the photosensitive component 500 does not work; when the light emitting device 2 is in a non-light emitting state, the photosensitive component 500 is in a working state, so that the intensity change of the ambient light in which the display device 1000 is located can be perceived through the photosensitive component 500, so that the processing chip in the display device 1000 can make corresponding adjustment on the screen brightness of the display device 1000 according to the intensity change of the ambient light perceived by the photosensitive component 500.

[0088] However, the light emitting state of the light emitting device 2 is switched quickly, i.e., the light emitting device 2 is in a non-light emitting state for a short time, so that the photosensitive component 500 may start to work before the light emitting device 2 is completely turned off.

[0089] In addition, whether the transistor 1011 contained in the pixel driving circuit 101 can be quickly turned off, the hysteresis effect of the transistor 1011 and the crosstalk phenomenon between adjacent light emitting devices 2 can all cause the delay of the off state of the light emitting device 2. That is, when the light emitting device 2 should be turned off and the photosensitive component 500 starts to work, the light emitting device 2 is not completely turned off but in a light emitting state.

[0090] In a case where the light-emitting device 2 has not been completely turned off after the photosensitive component 500 has started to work, light emitted by the light-emitting device 2 can leak out from the back of the display panel 300 through the boundary of the first electrode 201. The part of the light emitted by the light-emitting device 2 that leaks out from the back of the display panel 300 can interfere with the photosensitive component 500, causing the accuracy of the intensity of the ambient light perceived by the photosensitive component 500 to decrease, causing the display device 1000 to fail to well adjust the screen brightness of the display device 1000 according to the intensity of the ambient light in which the display device 1000 is located, and further affecting the viewing experience of the viewer.

[0091] Based on this, the display panel 300 provided in the embodiments of the present disclosure further includes at least one light shielding portion 3.

[0092] As shown in FIGS. 4 and 5, the light shielding portion 3 is located between the plurality of light-emitting devices 2 and the substrate 1; in the orthographic projection onto the substrate 1, each light shielding portion 3 is arranged along the boundary of the first electrode 201 of one light-emitting device 2, and the light shielding portion 3 is capable of transmitting an electrical signal.

[0093] For example, the number of the light shielding portion 3 can be one, two or more. The embodiments of the present disclosure do not limit this.

[0094] In a case where the number of the light shielding portion 3 is multiple, the first electrode 201 of part of the light-emitting devices 2 can be correspondingly provided with the light shielding portion 3, or the first electrode 201 of each light-emitting device 2 can be correspondingly provided with the light shielding portion 3. The embodiments of the present disclosure do not limit this.

[0095] For example, the light shielding portion 3 can shield and absorb light.

[0096] For example, the light shielding portion 3 can transmit an electrical signal, which can be, for example, a data signal, a first voltage signal, etc. The embodiments of the present disclosure do not limit this.

[0097] For example, the light shielding portion 3 can transmit a data signal. In a case where the light shielding portion 3 can transmit a data signal, the light shielding portion 3 can be electrically connected with a data signal line in the pixel circuit layer 10 and transmit the data signal together with the data signal line, thereby reducing the signal transmission load on the data signal and ensuring the stability of the data signal transmitted on the data signal line.

[0098] It should be noted that, in the embodiments of the present disclosure, the material of the light shielding portion 3 is not limited. For example, the material of the light shielding portion 3 can include at least one of a metal element, an alloy or a metal oxide, so that the light shielding portion 3 has the functions of electric conduction and light shielding. For example, the material of the light shielding portion 3 can be a high-temperature-resistant and oxidation-resistant metal material such as molybdenum, molybdenum-niobium, molybdenum-titanium, etc.

[0099] In addition, the thickness of the light shielding part 3 can be set according to specific conditions to achieve the effect of shielding light.

[0100] In this embodiment, by setting the light shielding part 3 extending along the boundary of the first electrode 201 of the light emitting device 2, in the case that the light emitting device 2 has not been completely turned off while the photosensitive component 500 has started to work, the light emitted by the light emitting device 2, which leaks to the back of the display panel 300 through the boundary of the first electrode 201, can be shielded and absorbed by the light shielding part 3, thereby reducing the probability of light leakage at the back of the display panel 300, improving the accuracy of the intensity of the ambient light perceived by the photosensitive component 500, and enabling the display device 1000 to well adjust the screen brightness of itself according to the intensity change of the ambient light in which it is located, thereby improving the viewing experience of the viewer.

[0101] In some embodiments, as shown in FIG. 5, the light shielding part 3 is in a ring structure arranged around the first electrode 201.

[0102] For example, as shown in FIG. 5, one light shielding part 3 is provided with one second opening 301. One second opening 301 corresponds to one first electrode 201.

[0103] For example, as shown in FIG. 5, the boundary of the first electrode 201 is roughly in a diamond shape; the shape of the second opening 301 of the light shielding part 3 is roughly in a diamond shape to match the shape of the first electrode 201. Of course, the shape of the boundary of the first electrode 201 and the shape of the second opening 301 of the light shielding part 3 can be various, such as circular, quadrilateral, pentagonal, hexagonal, etc., and the embodiments of the present disclosure are not limited thereto.

[0104] It should be noted that, in this document, “roughly in a diamond shape” means that the shape is generally in a diamond shape, but is not limited to a standard diamond shape. That is, the “diamond shape” here not only includes the shape of a basic diamond, but also includes shapes similar to a diamond shape considering the process conditions. For example, the corners of the diamond are curved, i.e., the corners are smooth.

[0105] In this embodiment, the light shielding portion 3 is arranged in a ring shape around the first electrode 201. On the one hand, the light shielding portion 3 shields the light emitted by the light emitting device 2, improves the problem that the light emitted by the light emitting device 2 leaks to the back of the display panel 300 through the boundary of the first electrode 201, improves the accuracy of the intensity of the ambient light perceived by the light sensing component 500, and enables the display device 1000 to well adjust the screen brightness of itself according to the intensity of the ambient light in which the display device 1000 is located, thereby improving the viewing experience of the viewer. On the other hand, the light shielding portion 3 has a small area, can to some extent reduce the probability of overlap between the light shielding portion 3 and the signal lines in other metal film layers, reduce the probability of parasitic capacitance between the light shielding portion 3 and the signal lines in other metal film layers, ensure the stability and accuracy of the electrical signals transmitted by the signal lines in other metal film layers, and further improve the image display quality of the display panel 300.

[0106] In some embodiments, as shown in FIG. 5, the light shielding portion 3 includes a first boundary 31 and a second boundary 32, the first boundary 31 and the second boundary 32 both extend along the boundary of the first electrode 201, and the first boundary 31 is closer to the center of the first electrode 201 than the second boundary 32. In the orthographic projection onto the substrate 1, the light shielding portion 3 is located outside the first electrode 201, and the first boundary 31 of the light shielding portion 3 coincides with the boundary of the first electrode 201.

[0107] For example, the boundary of the orthographic projection of the first electrode 201 onto the substrate 1 completely overlaps the boundary of the orthographic projection of the first boundary 31 of the light shielding portion 3 onto the substrate 1.

[0108] For example, the shape of the first boundary 31 of the light shielding portion 3 is substantially the same as the shape of the second boundary 32. For example, in the case where the shape of the first boundary 31 is substantially a rhombus, the shape of the second boundary 32 is substantially a rhombus. It can be understood that the first boundary 31 of the light shielding portion 3 constitutes the boundary of the second opening 301 of the light shielding portion 3. The first boundary 31 of the light shielding portion 3 coincides with the boundary of the first electrode 201, that is, the orthographic projection of the first electrode 201 onto the substrate 1 completely overlaps the orthographic projection of the second opening 301 of the light shielding portion 3 onto the substrate 1.

[0109] For example, the width of any position of the light shielding portion 3 is the same or substantially equal.

[0110] With the above arrangement, the light shielding portion 3 can be used to shield the light emitted by the light emitting device 2, improve the problem of light emitted by the light emitting device 2 leaking to the back of the display panel 300 through the boundary of the first electrode 201, improve the accuracy of the intensity of the ambient light perceived by the light sensing component 500, and enable the display device 1000 to well adjust the screen brightness of itself according to the intensity change of the ambient light in which the display device 1000 is located. In addition, the width of the light shielding portion 3 can be relatively small, further reducing the probability of overlap between the light shielding portion 3 and the signal lines in other metal film layers, reducing the probability of parasitic capacitance between the light shielding portion 3 and the signal lines in other metal film layers, ensuring the stability and accuracy of the electrical signals transmitted by the signal lines in other metal film layers, and further improving the image display quality of the display panel 300.

[0111] In addition, the first boundary 31 of the light shielding portion 3 coincides with the boundary of the first electrode 201, that is, the light shielding portion 3 and the first electrode 201 do not overlap in the thickness direction of the display panel 300, thereby avoiding the problem of poor flatness of the first electrode 201 caused by the light shielding portion 3, and ensuring the device performance of the light emitting device 2.

[0112] In some embodiments, as shown in FIG. 4, in the orthographic projection onto the substrate 1, the boundary of the first electrode 201 is located between the first boundary 31 and the second boundary 32 of the light shielding portion 3.

[0113] For example, the boundary of the orthographic projection of the first electrode 201 on the substrate 1 partially overlaps with the orthographic projection of the light shielding portion 3 on the substrate 1.

[0114] In this embodiment, the light shielding portion 3 is used to shield the light emitted by the light emitting device 2, improve the problem of light emitted by the light emitting device 2 leaking to the back of the display panel 300 through the boundary of the first electrode 201, improve the accuracy of the intensity of the ambient light perceived by the light sensing component 500, and enable the display device 1000 to well adjust the screen brightness of itself according to the intensity change of the ambient light in which the display device 1000 is located.

[0115] In some embodiments, as shown in FIG. 4, the display panel 300 further includes a source-drain metal layer 4 located between the plurality of light emitting devices 2 and the substrate 1; and the light shielding portion 3 is arranged in the source-drain metal layer 4.

[0116] It should be noted that the source-drain metal layer 4 herein can be the source-drain metal layer 106 in the pixel circuit layer 10 for forming the source and drain of the plurality of transistors 1011, or can be another source-drain metal layer in the pixel circuit layer 10 different from the source-drain metal layer 106 for forming the source and drain of the plurality of transistors 1011. For example, the source-drain metal layer 4 can be used to form a plurality of signal lines. Embodiments of the present disclosure do not limit this.

[0117] The light shielding part 3 is disposed in the source-drain metal layer 4, that is, the light shielding part 3 is in the same layer and of the same material as the signal lines or the source and drain of the thin film transistors 1011 in the source-drain metal layer 4.

[0118] It should be noted that "in the same layer" refers to a layer structure formed by using the same film forming process to form a film layer for forming a specific pattern, and then using the same mask to form by one patterning process. According to different specific patterns, the one patterning process can include multiple exposure, development or etching processes, and the specific patterns in the formed layer structure can be continuous or discontinuous, and these specific patterns can also be at different heights or have different thicknesses. In this way, the light shielding part 3 and the signal lines in the source-drain metal layer can be formed in the same patterning process.

[0119] In addition, in the present disclosure, the patterning process can refer to a process including photolithography, or including photolithography and etching steps, and can also include printing, inkjet and other processes for forming predetermined patterns; the photolithography process refers to a process for forming patterns using photoresist, mask, exposure machine and the like, including film forming, exposure, development and the like. The corresponding patterning process can be selected according to the structure formed in the present disclosure.

[0120] It can be understood that in the case where the light shielding part 3 is disposed in the source-drain metal layer 4, in the manufacturing process of the display panel 300, a new mask is not needed to be added, and only the mask used to originally form the source-drain metal layer 4 needs to be improved, so that the source-drain metal layer 4 formed includes the light shielding part 3 and the signal lines included in the source-drain metal layer 4.

[0121] By using the above arrangement, the light shielding part 3 and the signal lines or the source and drain of the thin film transistors 1011 in the source-drain metal layer 4 can form a film layer by using the same film forming process, and then form by one patterning process using the same mask, so that the patterning process step can be simple, and accordingly the manufacturing process of the display panel 300 is simplified, the preparation difficulty of the display panel 300 is reduced, and the manufacturing cost of the display panel 300 is reduced.

[0122] In addition, by arranging the light shielding part 3 in the source-drain metal layer, the light shielding part 3 can shield the light emitted by the light emitting device 2, so that part of the light emitted by the light emitting device 2 does not leak from the edge of the first electrode 201 and exit from the back light surface of the display panel 300, thereby avoiding the light emitted by the light emitting device 2 from interfering with the light sensing component 500, ensuring the accuracy of the intensity of the ambient light perceived by the light sensing component 500, and ensuring that the display device 1000 can well adjust the screen brightness according to the intensity change of the ambient light, thereby improving the viewing experience of the viewer. In addition, the new film layer can be avoided, which is not conducive to the thinning of the display panel 300.

[0123] In some embodiments, as shown in FIG. 6, the source-drain metal layer 4 includes a first signal line 41, and the first signal line 41 includes a first sub-part 401 and a second sub-part 402 connected to each other. In the orthogonal projection onto the substrate 1, the first sub-part 401 is arranged along the boundary of the first electrode 201 of one light emitting device 2; the second sub-part 402 is arranged along the length direction of the first signal line 41; and the first sub-part 401 serves as the light shielding part 3.

[0124] For example, in one first signal line 41, the number of first sub-parts 401 can be one or more. Embodiments of the present disclosure do not limit this. For example, in one first signal line 41, the number of second sub-parts 402 can be one or more.

[0125] In the case where the number of second sub-parts 402 in one first signal line 41 is more than one, the extension directions of the plurality of second sub-parts 402 are the same. The extension direction of the plurality of second sub-parts 402 is the length direction of the first signal line 41.

[0126] In some implementations, as shown in FIG. 7A, the first signal line 41 is a straight line segment extending in the same direction. The orthogonal projection of the first signal line 41 on the substrate 1 partially overlaps the orthogonal projection of the first electrode 201 on the substrate 1.

[0127] In the technical solution of the present disclosure, the part of the first signal line 41 overlapping with the first electrode 201 is arranged to extend along the boundary of the first electrode 201 of one light emitting device 2. On the one hand, the first signal line 41 is arranged to include the first sub-part 401 and the second sub-part 402 connected together, and the first sub-part 401 is used as the light shielding part 3, which simplifies the manufacturing process of the display panel 300, and the light emitted by the light emitting device 2 can be shielded by the first sub-part 401 (i.e., the light shielding part 3), which ensures the accuracy of the intensity of the ambient light perceived by the light sensing component 500, and ensures that the display device 1000 can well adjust the screen brightness according to the change of the intensity of the ambient light, thereby improving the viewing experience of the viewer. On the other hand, the area of the part of the first signal line 41 opposite to the first electrode 201 can be increased, thereby reducing the signal transmission load on the first sub-part 401 of the first signal line 41, improving the stability of the signal transmitted on the first sub-part 401 of the first signal line 41, and ensuring the display yield of the display panel 300.

[0128] In some embodiments, the first signal line 41 is a data line or a VDD line.

[0129] The data line is connected to the data signal end Data of the pixel driving circuit 101 and is used to provide a data signal for compensating the threshold voltage of the driving transistor T2. The VDD line is connected to the first voltage signal end VDD of the pixel driving circuit 101 and is used to provide a first voltage signal.

[0130] When the first signal line 41 is a data line, i.e., the light shielding part 3 is part of the data line, the light shielding part 3 can transmit a data signal. When the first signal line 41 is a VDD line, i.e., the light shielding part 3 is part of the VDD line, the light shielding part 3 can transmit a first voltage signal.

[0131] By using the above arrangement, part of the data line or the VDD line is used as the light shielding part 3, which simplifies the manufacturing process of the display panel 300, and the light emitted by the light emitting device 2 can be shielded by the part of the data line or the VDD line used as the light shielding part 3, which ensures the accuracy of the intensity of the ambient light perceived by the light sensing component 500, and ensures that the display device 1000 can well adjust the screen brightness according to the change of the intensity of the ambient light, thereby improving the viewing experience of the viewer. In addition, the area of the part of the data line or the VDD line opposite to the first electrode 201 can be increased, thereby reducing the signal transmission load on the first sub-part 401 of the data line or the VDD line, improving the stability of the signal transmitted on the first sub-part 401 of the first signal line 41, and ensuring the display yield of the display panel 300.

[0132] In some embodiments, as shown in FIG. 6, the first sub-section 401 is annular, and the first sub-section 401 and the second sub-section 402 are alternately connected in the length direction of the first signal line 41.

[0133] For example, in a case where the number of the first sub-section 401 is one and the number of the second sub-section 402 is two in one first signal line 41, the two second sub-sections 402 are connected by the first sub-section 401.

[0134] For example, in a case where the number of the first sub-section 401 and the number of the second sub-section 402 are both multiple in one first signal line 41, any two second sub-sections 402 are connected by one first sub-section 401, and any two first sub-sections 401 are connected by one second sub-section 402.

[0135] With the above arrangement, by adjusting the part of the first signal line 41 opposite to the first electrode 201 of the light-emitting device 2 to form the first sub-section 401 and taking the first sub-section 401 as the light-blocking section 3, the preparation process of the display panel 300 is simplified, and the light-blocking section 3 can block the light of the light-emitting device 2, ensure the accuracy of the intensity of the ambient light perceived by the light-perceiving component 500, and ensure that the display device 1000 can well adjust the screen brightness according to the intensity change of the ambient light, thereby improving the viewing experience of the viewer.

[0136] In some embodiments, the width of the first sub-section 401 is greater than the width of the second sub-section 402.

[0137] For example, the width of the first sub-section 401 ranges from 1.5 μm to 2.5 μm, and the width of the second sub-section 402 ranges from 1.2 μm to 2.2 μm.

[0138] For example, in a case where the width of the first sub-section 401 is 2.5 μm, the width of the second sub-section 402 can be 2.2 μm. For another example, in a case where the width of the first sub-section 401 is 1.5 μm, the width of the second sub-section 402 can be 1.2 μm. Embodiments of the present disclosure do not limit this.

[0139] With the above arrangement, the width of the first sub-portion 401 is increased relative to the second sub-portion 402, so that the first sub-portion 401 (i.e., the light shielding portion 3) can effectively shield the light of the light emitting device 2, ensuring the accuracy of the intensity of the ambient light perceived by the light sensing component 500, and ensuring that the display device 1000 can well adjust the screen brightness of itself according to the intensity change of the ambient light, thereby improving the viewing experience of the viewer; it can also avoid the problem that the overall width of the first signal line 41 is too large, occupies too much space, and increases the wiring difficulty of the display panel 300.

[0140] In some embodiments, the ratio of the width of the first sub-portion 401 to the width of the second sub-portion 402 is greater than 1 and less than or equal to 2.08.

[0141] For example, the ratio of the width of the first sub-portion 401 to the width of the second sub-portion 402 can be 1.2, 1.5, 1.7, 1.9, 2.08, etc. Embodiments of the present disclosure do not limit this.

[0142] With the above arrangement, the width of the first sub-portion 401 is greater than the width of the second sub-portion 402, so that the first sub-portion 401 (i.e., the light shielding portion 3) can effectively shield the light of the light emitting device 2, ensuring the accuracy of the intensity of the ambient light perceived by the light sensing component 500, and ensuring that the display device 1000 can well adjust the screen brightness of itself according to the intensity change of the ambient light, thereby improving the viewing experience of the viewer; it can also avoid the problem that the overall width of the first signal line 41 is too large, occupies too much space, and increases the wiring difficulty of the display panel 300.

[0143] In some embodiments, as shown in FIG. 4, the plurality of light emitting devices 2 includes a plurality of blue light emitting devices 21; in the orthographic projection onto the substrate 1, the boundary of the first electrode 201 of each blue light emitting device 21 is correspondingly provided with a light shielding portion 3.

[0144] For example, as shown in FIG. 7B, the plurality of light emitting devices 2 includes a plurality of blue light emitting devices 21 and a plurality of green light emitting devices 22. Of course, the plurality of light emitting devices 2 can also include red light emitting devices, etc.

[0145] The inventors of the present disclosure found that, in the process of forming the display panel 300, the green light emitting device 22 may deviate to the blue light emitting device 21, that is, the material for forming the light emitting part of the green light emitting device 22 may be evaporated to the first electrode 201 of the blue light emitting device 21. In the process of lighting the blue light emitting device 21, not only the light emitting wavelength of the blue light emitting device 21 changes, but also the light emitted by the blue light emitting device 21 leaks from the back of the display panel 300 through the boundary of the first electrode 201 (for example, position A shown in FIG. 7B), and the green light also leaks from the back of the display panel 300 through the boundary of the first electrode 201 (for example, position A shown in FIG. 7B), thereby aggravating the light leakage problem of the back of the display panel 300.

[0146] In the embodiments of the present disclosure, the boundary of the first electrode 201 of each blue light emitting device 21 is correspondingly provided with the light shielding part 3, so as to shield the light emitted by the blue light emitting device 21 and avoid the light emitted by the blue light emitting device 21 from leaking from the back of the display panel 300. In the case that the green light emitting device 22 deviates to the blue light emitting device 21 and the blue light emitting device 21 is lighted, the green light can also be prevented from leaking from the back of the display panel 300, thereby greatly improving the light leakage problem of the back of the display panel 300, and further improving the accuracy of the intensity of the ambient light perceived by the light sensing component 500 located at the back of the display panel 300, so that the display device 1000 can well adjust the screen brightness of itself according to the intensity change of the ambient light in which it is located, thereby improving the viewing experience of the viewer.

[0147] In addition, in the case that the first sub-part 401 of the first signal line 41 is used as the light shielding part 3, the extension direction of the wire of the first signal line 41 changes. By correspondingly providing the boundary of the first electrode 201 of each blue light emitting device 21 with the light shielding part 3, the extension directions of the wires of the plurality of first signal lines 41 are basically the same, thereby improving the uniformity of the wiring of the display panel 300, avoiding the difference between the parasitic capacitances between different first signal lines 41 and the signal lines adjacent thereto due to the different extension directions of the wires of the different first signal lines 41, thereby improving the stability and accuracy of the electrical signal transmitted by the first signal line 41, and further improving the image display quality of the display panel 300 and the display device 1000.

[0148] In some embodiments, as shown in FIG. 8, the display panel 300 further comprises a light shielding layer 5 located between the plurality of light emitting devices 2 and the substrate 1, wherein the light shielding part 3 is arranged in the light shielding layer 5.

[0149] In some examples, as shown in FIG. 8, in the case where the display panel 300 includes the pixel circuit layer 10, the light shielding layer 5 is located between the pixel circuit layer 10 and the substrate 1.

[0150] Exemplarily, the material of the light shielding layer 5 can be any lightproof metal. For example, molybdenum metal, chromium metal, titanium metal, or other high-temperature-resistant metals, etc. Embodiments of the present disclosure do not make any limitation in this regard.

[0151] It can be understood that the light shielding part 3 is arranged in the light shielding layer 5, that is, the light shielding part 3 is located in the same layer and has the same material as other patterns in the light shielding layer 5.

[0152] With the above arrangement, the light shielding part 3 and other patterns in the light shielding layer 5 can form a film layer by using the same film forming process, and then form by using the same mask plate for one time patterning process, so as to simplify the patterning process steps, and accordingly simplify the manufacturing process of the display panel 300, reduce the preparation difficulty of the display panel 300, and reduce the manufacturing cost of the display panel 300.

[0153] In addition, by arranging the light shielding part 3 in the light shielding layer 5, the light shielding part 3 can shield the light of the light emitting device 2, avoid part of the light emitted by the light emitting device 2 from leaking out of the edge of the first electrode 201 and emitting from the back light surface of the display panel 300, avoid the light emitted by the light emitting device 2 from interfering with the light sensing component 500, so as to ensure the accuracy of the intensity of the ambient light perceived by the light sensing component 500, ensure that the display device 1000 can well adjust the screen brightness of itself according to the intensity change of the ambient light, and thus improve the viewing experience of the viewer; and also avoid adding a new film layer, which is not conducive to the thinning of the display panel 300.

[0154] In some embodiments, as shown in FIG. 9, the light shielding layer 5 further includes a plurality of light shielding patterns 51. In the orthographic projection onto the substrate 1, each light shielding pattern 51 covers at least a channel region of a transistor 1011.

[0155] Exemplarily, the orthographic projection of the channel region of the transistor 1011 onto the substrate 1 is located within the orthographic projection of the light shielding pattern 51 onto the substrate 1.

[0156] Exemplarily, the shape of the light shielding pattern 51 can be a block structure. Of course, the shape of the light shielding pattern 51 can also be other structures. As long as the light shielding pattern 51 can cover the channel region of the transistor 1011, the embodiments of the present disclosure do not make any limitation in this regard.

[0157] With the above arrangement, the channel region of the at least one transistor 1011 is shielded by the light shielding pattern 51, so that the light incident on the display panel 300 from the backlight surface of the display panel 300 can be shielded by the light shielding pattern 51, the problem of increased leakage current of the transistor 1011 due to light on the channel region of the at least one transistor 1011 is reduced, and the stability of the at least one transistor 1011 is ensured.

[0158] In some embodiments, as shown in FIG. 9, the light shielding layer 5 further includes a connecting portion 52, which is arranged to extend along a preset direction and is used to connect one light shielding portion 3 and one light shielding pattern 51 arranged in the preset direction.

[0159] For example, the number of the connecting portion 52 can be one or multiple. In the case where the number of the connecting portion 52 is multiple, the extension directions of the multiple connecting portions 52 can be the same or different. The embodiments of the present disclosure do not make any limitation in this regard.

[0160] With the above arrangement, the light shielding portion 3, the connecting portion 52 and the light shielding pattern 51 are connected with each other, and in the case where the material of the light shielding layer 5 is a conductive material, the light shielding portion 3, the connecting portion 52 and the light shielding pattern 51 can also serve as signal lines after being connected with each other.

[0161] In some embodiments, the width of the light shielding portion 3 is greater than the width of the connecting portion 52.

[0162] For example, the width of the light shielding portion 3 ranges from 1.5 μm to 2.5 μm. The width of the connecting portion 52 ranges from 1.2 μm to 2.2 μm.

[0163] For example, in the case where the width of the light shielding portion 3 is 2.5 μm, the width of the connecting portion 52 can be 2.2 μm. For another example, in the case where the width of the light shielding portion 3 is 1.5 μm, the width of the connecting portion 52 can be 1.2 μm. The embodiments of the present disclosure do not make any limitation in this regard.

[0164] With the above arrangement, the width of the light shielding portion 3 is greater than that of the connecting portion 52, so that the effective shielding of the light of the light emitting device 2 by the light shielding portion 3 can be ensured, the accuracy of the intensity of the ambient light perceived by the light sensing component 500 can be ensured, the display device 1000 can be able to well adjust the screen brightness of itself according to the intensity change of the ambient light, so as to improve the viewing experience of the viewer; in addition, the width of the connecting portion 52 is small, which can reduce the probability of parasitic capacitance between the connecting portion 52 and the signal lines in other metal film layers, and ensure the stability and accuracy of the electrical signals transmitted by the signal lines in other metal film layers, thereby improving the image display quality of the display panel 300.

[0165] In some embodiments, the ratio of the width of the light shielding portion 3 to the width of the connecting portion 52 is greater than 1 and less than or equal to 2.08.

[0166] For example, the ratio of the width of the light shielding portion 3 to the width of the connecting portion 52 can be 1.2, 1.5, 1.7, 1.9, 2.08, etc. Embodiments of the present disclosure do not limit this.

[0167] With the above arrangement, the width of the light shielding portion 3 is ensured to be greater than the width of the connecting portion 52, the effective shielding of the light rays of the light emitting device 2 by the light shielding portion 3 is ensured, the accuracy of the intensity of the ambient light perceived by the light sensing component 500 is ensured, the display device 1000 is ensured to be able to well adjust the screen brightness of itself according to the intensity change of the ambient light, thereby improving the viewing experience of the viewer; the width of the connecting portion 52 is small, which can reduce the probability of parasitic capacitance between the connecting portion 52 and the signal lines in other metal film layers, ensure the stability and accuracy of the electrical signals transmitted by the signal lines in other metal film layers, and further improve the image display quality of the display panel 300.

[0168] In some embodiments, in the orthographic projection to the substrate 1, the boundary of the first electrode 201 of at least one blue light emitting device 21 is correspondingly provided with a light shielding portion 3.

[0169] In some examples, the boundary of the first electrode 201 of part of the blue light emitting device 21 is correspondingly provided with a light shielding portion 3. In other examples, the boundary of the first electrode 201 of each blue light emitting device 21 is correspondingly provided with a light shielding portion 3. Embodiments of the present disclosure do not limit this.

[0170] As can be seen from the above, in the process of forming the display panel 300, there can be a case that the green light emitting device 22 is offset to the blue light emitting device 21. In the process of lighting the blue light emitting device 21, not only the wavelength of the light emitted by the blue light emitting device 21 will change, but also in addition to the light emitted by the blue light emitting device 21 leaking out from the back of the display panel 300 through the boundary of the first electrode 201, the green light will also leak out from the back of the display panel 300 through the boundary of the first electrode 201 of the blue light emitting device 21, thereby causing the back light leakage of the display panel 300 to be more serious.

[0171] In this embodiment, the light shielding part 3 is arranged at the boundary of the first electrode 201 of the blue light emitting device 21, so that the light emitted by the blue light emitting device 21 is shielded, and the light emitted by the blue light emitting device 21 is prevented from leaking out of the back light surface of the display panel 300. In the case that the green light emitting device 22 is offset to the blue light emitting device 21 and the blue light emitting device 21 is lighted, the green light is also prevented from leaking out of the back light surface of the display panel 300, so that the problem of light leakage at the back of the display panel 300 is greatly improved, and the accuracy of the intensity of the ambient light perceived by the light sensing component 500 at the back of the display panel 300 is improved, so that the display device 1000 can well adjust the screen brightness according to the intensity change of the ambient light, thereby improving the viewing experience of the viewer.

[0172] In some embodiments, as shown in FIG. 3, the display panel 300 includes a target area A1 for arranging the light sensing component 500. The plurality of light emitting devices 2 includes a plurality of blue light emitting devices 21, and the first electrode 201 of at least the blue light emitting device 21 located in the target area A1 is provided with the light shielding part 3.

[0173] In some examples, the size of the target area A1 is equal to the size of the orthographic projection of the light sensing component 500 on the display panel 300. In other examples, the size of the target area A1 is greater than the size of the orthographic projection of the light sensing component 500 on the display panel 300. Embodiments of the present disclosure do not limit this.

[0174] In this embodiment, the light shielding part 3 is arranged at the boundary of the first electrode 201 of the blue light emitting device 21 located in the target area A1 of the display panel 300 for arranging the light sensing component 500, so that the light emitted by the blue light emitting device 21 is shielded, and the light emitted by the blue light emitting device 21 is prevented from leaking out of the back light surface of the display panel 300. In the case that the green light emitting device 22 is offset to the blue light emitting device 21 and the blue light emitting device 21 is lighted, the green light is also prevented from leaking out of the back light surface of the display panel 300, so that the problem of light leakage at the back of the display panel 300 is greatly improved, and the accuracy of the intensity of the ambient light perceived by the light sensing component 500 at the back of the display panel 300 is improved, so that the display device 1000 can well adjust the screen brightness according to the intensity change of the ambient light, thereby improving the viewing experience of the viewer.

[0175] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any person skilled in the art can think of changes or replacements within the technical scope disclosed by the present disclosure, which should be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

A display panel comprises: a substrate; a plurality of light emitting devices, each of which comprises a first electrode, a light emitting part and a second electrode arranged in a stack in a direction away from the substrate; at least one light shielding part between the plurality of light emitting devices and the substrate; in a projection onto the substrate, each of the light shielding parts is arranged along a boundary of the first electrode of one of the light emitting devices, and the light shielding part is capable of transmitting an electrical signal. The display panel of claim 1, wherein, The light shielding part is in a ring shape surrounding the first electrode. The display panel according to claim 1 or 2, wherein, The light shielding part comprises a first boundary and a second boundary, both of which extend along the boundary of the first electrode, and the first boundary is closer to a center of the first electrode than the second boundary. In the projection onto the substrate, the light shielding part is located outside the first electrode, and the first boundary of the light shielding part coincides with the boundary of the first electrode. The display panel according to claim 1 or 2, wherein, The light shielding part comprises a first boundary and a second boundary, both of which extend along the boundary of the first electrode, and the first boundary is closer to a center of the first electrode than the second boundary. In the projection onto the substrate, the boundary of the first electrode is located between the first boundary and the second boundary of the light shielding part. The display panel according to any one of claims 1-4, further comprising: a source-drain metal layer between the plurality of light emitting devices and the substrate; wherein the light shielding part is arranged in the source-drain metal layer. The display panel according to claim 5, wherein, The source-drain metal layer comprises a first signal line, the first signal line comprising a first sub-part and a second sub-part connected to each other; in the projection onto the substrate, the first sub-part is arranged along the boundary of the first electrode of one of the light emitting devices, and the second sub-part is arranged along a length direction of the first signal line; the first sub-part serves as the light shielding part. The display panel according to claim 6, wherein The first signal line is a data line or a VDD line. The display panel according to claim 6 or 7, wherein The first sub-part is in a ring shape, and the first sub-part and the second sub-part are alternately connected in the length direction of the first signal line. The display panel according to any one of claims 6-8, wherein A width of the first sub-part is greater than a width of the second sub-part. The display panel according to any one of claims 6-9, wherein A ratio of the width of the first sub-part to the width of the second sub-part is greater than 1 and less than or equal to 2.

08. The display panel according to any one of claims 5-10, wherein The plurality of light emitting devices comprise a plurality of blue light emitting devices; in the projection onto the substrate, a boundary of the first electrode of each of the blue light emitting devices is correspondingly provided with the light shielding part. The display panel according to any one of claims 1-4, further comprising: a light shielding layer between the plurality of light emitting devices and the substrate, wherein the light shielding part is arranged in the light shielding layer. The display panel according to claim 12, wherein, The display panel further comprises a pixel circuit layer between the plurality of light emitting devices and the light shielding layer, the pixel circuit layer comprising a plurality of transistors; The light shielding layer further comprises a plurality of light shielding patterns, each of which covers a channel region of at least one of the transistors in the projection onto the substrate. The display panel according to claim 13, wherein, The light shielding layer further comprises a connection part arranged in a preset direction for connecting one of the light shielding parts and one of the light shielding patterns arranged in the preset direction. The display panel according to claim 14, wherein, The width of the light shielding portion is greater than the width of the connecting portion. The display panel according to claim 14 or 15, wherein The ratio of the width of the light shielding portion to the width of the connecting portion is greater than 1 and less than or equal to 2.

08. The display panel according to any one of claims 12-16, wherein The plurality of light emitting devices includes blue light emitting devices. In the orthographic projection of the substrate, the boundary of the first electrode of at least one of the blue light emitting devices is provided with the light shielding portion in correspondence. The display panel according to any one of claims 12-17, wherein The display panel includes a target region for disposing a light sensing component; The plurality of light emitting devices includes a plurality of blue light emitting devices, and the first electrode of at least one of the blue light emitting devices located in the target region is provided with the light shielding portion in correspondence. A display device includes: The display panel according to any one of claims 1 to 18; And A light sensing component located on the backlight side of the display panel.

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