Display panel and electronic equipment

Abstract

The invention provides a display panel and electronic equipment. The display panel comprises a substrate, a flat layer arranged on the substrate and a light emitting device arranged on the flat layer. Wherein the surface, close to the light-emitting device, of the flat layer is provided with a concave-convex part, the light-emitting device is provided with a part overlapped with the concave-convex part, so that the part, overlapped with the concave-convex part, of the light-emitting device is in a concave-convex shape, and then the reflectivity of the light-emitting device is reduced. According to the display panel provided by the invention, the concave-convex part is arranged on the surface of the flat layer, so that the overlapped part of the light-emitting device and the concave-convex part is concave-convex, the reflectivity of the light-emitting device can be reduced, and the display effect of the display panel can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of electronic device structures, and in particular to a display panel and an electronic device. Background Art

[0002] Organic Light-Emitting Diode (OLED) display panels have many advantages such as light weight, active light emission, fast response speed, large viewing angle, wide color gamut, high brightness and low power consumption. They have gradually become the third generation display technology after liquid crystal displays.

[0003] In conventional technology, in order to reduce power consumption, the OLED display panel may use a non-polarizer technology, which generally uses a black matrix (BM) for shielding.

[0004] However, in order to meet the transmittance requirements of the ambient light sensing area or the under-screen fingerprint area, a hole is usually dug in the BM area to partially improve the transmittance of the ambient light sensing area or the under-screen fingerprint area. At the same time, by digging a hole in the BM area, the reflectivity of the ambient light sensing area or the under-screen fingerprint area is different from that of the normal display area, affecting the appearance. Summary of the invention

[0005] On the one hand, an embodiment of the present application provides a display panel, which includes a substrate, a flat layer arranged on the substrate, and a light-emitting device arranged on the flat layer; wherein the flat layer has a concave-convex portion on a surface close to the light-emitting device, and the light-emitting device has a portion overlapping with the concave-convex portion, so that the portion of the light-emitting device overlapping with the concave-convex portion is concave-convex, thereby reducing the reflectivity of the light-emitting device.

[0006] On the other hand, an embodiment of the present application further provides an electronic device, which includes a housing assembly and a display panel connected to one side of the housing assembly; wherein the display panel is the display panel described in the aforementioned embodiment.

[0007] The display panel and electronic device provided in the embodiments of the present application provide a concave-convex portion on the surface of the flat layer so that the portion where the light-emitting device overlaps with the concave-convex portion is concave-convex, thereby reducing the reflectivity of the light-emitting device and improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0009] Figure 1 is a schematic diagram of the structure of an electronic device in some embodiments of the present application;

[0010] Figure 2 yes Figure 1 A schematic diagram of the structural disassembly of the electronic device in the embodiment;

[0011] Figure 3 is a schematic diagram of the internal structure of an electronic device in some embodiments of the present application;

[0012] Figure 4 is a schematic diagram of the front structure of a display panel in some embodiments of the present application;

[0013] Figure 5 yes Figure 4 A schematic diagram of a cross-sectional structure of a display panel along the AA direction in the embodiment;

[0014] Figure 6 yes Figure 4 A schematic diagram of a cross-sectional structure of a display panel along the BB direction in the embodiment;

[0015] Figure 7 is a schematic diagram of a partial cross-sectional structure of a display panel in some other embodiments of the present application;

[0016] Figure 8 is a schematic diagram of a partial cross-sectional structure of a display panel in some other embodiments of the present application;

[0017] Fig. 9 is a schematic diagram of a partial cross-sectional structure of a display panel in some other embodiments of the present application;

[0018] Fig.10 is a schematic diagram of a partial cross-sectional structure of a display panel in some other embodiments of the present application;

[0019] Fig.11 It is a schematic diagram of the structural composition of mobile terminal devices in other embodiments of the present application. DETAILED DESCRIPTION

[0020] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] As used herein, "electronic devices" (or simply "terminals") include, but are not limited to, devices configured to receive / send communication signals via a wireline connection (e.g., via a public switched telephone network (PSTN), a digital subscriber line (DSL), a digital cable, a direct cable connection, and / or another data connection / network) and / or via a wireless interface (e.g., for a cellular network, a wireless local area network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and / or another communication terminal). Communication terminals configured to communicate via a wireless interface may be referred to as "wireless communication terminals", "wireless terminals" or "mobile terminals". Examples of mobile terminals include, but are not limited to, satellite or cellular phones; personal communication system (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communication capabilities; PDAs that may include radiotelephones, pagers, Internet / intranet access, web browsers, organizers, calendars, and / or global positioning system (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. A mobile phone is an electronic device equipped with a cellular communication module.

[0023] See also Figure 1 and Figure 2 , Figure 1 is a schematic diagram of the structure of an electronic device 100 in some embodiments of the present application, Figure 2 yes Figure 1 Schematic diagram of the structural disassembly of the electronic device 100 in the embodiment.

[0024] The electronic device 100 provided in the embodiment of the present application may specifically be a mobile phone, a tablet computer, a laptop computer, and the like. The following description is given below with the electronic device 100 being a mobile phone. The electronic device 100 may include a housing assembly 10 and a display panel 20 connected to one side of the housing assembly 10. The housing assembly 10 is connected to the display panel 20, and together they enclose a housing space for the electronic device 100. The housing space of the electronic device 100 may be used to install electronic devices required by the electronic device 100, such as a battery, a photosensitive device, a circuit board, and a camera.

[0025] Specifically, the housing assembly 10 may include a middle frame 110 and a cover plate 120. The display panel 20 may be connected to one side of the middle frame 110, and the cover plate 120 may be connected to the other opposite side of the middle frame 110, that is, the display panel 20 and the cover plate 120 may be respectively disposed on opposite sides of the middle frame 110, thereby forming a housing space for the electronic device 100 together with the middle frame 110.

[0026] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] like Figure 2 As shown, the middle frame 110 may include a middle plate 111 of an integral structure and a frame 112 surrounding at least part of the outer periphery of the middle plate 111, and the two may be integrally formed by injection molding, stamping molding, heat absorption molding and other processes. Among them, the frame 112 may be formed by the side wall of the middle plate 111 extending in the thickness direction of the middle plate 111, so that the two sides of the middle frame 110 that are relatively arranged can form corresponding open structures. The display panel 20 and the cover plate 120 may be respectively covered on the open structures on the opposite sides of the middle frame 110, thereby forming a housing space for the electronic device 100 together with the middle frame 110. In some embodiments, the middle plate 111 and the frame 112 may also be two independent structural members, and the two may be connected by one of the assembly methods such as snap-on, bonding and welding and a combination thereof. Alternatively, the middle frame 110 may also include only the frame 112.

[0028] In addition, the material of the middle frame 110 can be glass, metal, hard plastic, etc., so that the middle frame 110 has a certain structural strength. Among them, since the middle frame 110 is generally directly exposed to the external environment, the middle frame 110 can also have certain wear-resistant, corrosion-resistant and scratch-resistant properties, or a layer of functional materials for wear-resistant, corrosion-resistant and scratch-resistant is coated on the outer surface of the middle frame 110 (that is, the outer surface of the electronic device 100). In addition, in some embodiments, a corresponding brand logo (LOGO) can also be provided on the middle frame 110 to beautify the appearance of the electronic device 100 and improve brand recognition. Further, the middle frame 110 is arranged between the display panel 20 and the cover plate 120, and is respectively connected to the display panel 20 and the cover plate 120 to form the overall structural frame of the electronic device 100. In the structural application of the electronic device 100, the middle frame 110 is generally used to carry or fix the internal components such as the circuit board, battery, camera or photosensitive device of the electronic device 100.

[0029] It should be noted that the electronic device in the embodiment of the present application may be an electronic device with an identification function, for example, a fingerprint recognition or face recognition module may be used to quickly perform the unlocking and waking functions of the electronic device. The identification module can usually use the photosensitive device under the screen of the electronic device to obtain the image and achieve the purpose of identification. It is understandable that the electronic device in the embodiment of the present application may be a tablet computer, a mobile phone, a camera, a personal computer, a laptop computer, a vehicle-mounted device, a wearable device, and other smart devices with a photosensitive device under the screen.

[0030] Of course, in some embodiments, the electronic device may have a photosensitive device, which may be disposed under the display screen of the electronic device and realize the recognition function or the ambient light sensing function by acquiring the light passing through the display screen. For example, the photosensitive device may be configured to recognize fingerprints or recognize faces to quickly perform the unlocking and waking functions of the electronic device. For another example, the photosensitive device may be configured to sense the light intensity of the environment in which the electronic device is located to realize the corresponding function.

[0031] See also Figure 3 , Figure 3Schematic diagram of the internal structure of the electronic device 100 in some embodiments of the present application. Among them, the display panel 20 may have a display surface 201 and a non-display surface 202, and the display surface 201 and the non-display surface 202 may be arranged opposite to each other. For example, the display surface 201 is located outside the electronic device 100 for display and corresponding human-computer interaction operations, and the non-display surface 202 is located inside the electronic device 100 for connection with other structures of the electronic device 100. An identification area 203 is provided on the display panel 20, so that the user can perform identification operations on the identification area 203, so that the electronic device 100 can perform functions such as unlocking and waking up more conveniently. The display panel 20 can be a display screen for display such as an LED (light emitting diode) display screen, an OLED (Organic Light-Emitting Diode) display screen, etc.

[0032] Furthermore, the electronic device 100 may also include a photosensitive device 40, a battery 50 and a circuit board 60 arranged in its accommodating space, that is, the photosensitive device 40, the battery 50 and the circuit board 60 are arranged on the side of the non-display surface of the display panel 20. The photosensitive device 40 is a device that can convert biometric information into electronic signals. The battery 50 can provide power for the operation of the electronic device 100, and the circuit board 60 can be used to implement the corresponding control functions of the electronic device 100. Among them, the photosensitive device 40 can obtain the user's biometric information through the identification area 203, and convert the obtained biometric information into an electronic signal to send it to the processor of the electronic device 100, so that the processor of the electronic device 100 can perform corresponding operations according to the received electronic signal; for example, it can be used to implement functions such as fingerprint unlocking, automatic screen off, and brightness self-adjustment.

[0033] The biometric information of the user obtained by the photosensitive device 40 through the identification area 203 may be information such as fingerprints, palm prints, or facial features. Fingerprints refer to the lines formed by the uneven skin on the end of the fingertips of human fingers; palm prints refer to the lines on the entire palm; facial features refer to the features of the human face, including face shape, arrangement of facial features and appearance. For a user, the above biometric information is unique, and therefore can be used to identify a unique user. The biometric information obtained by the above photosensitive device 40 can be summarized as image information, that is, the biometric information in the embodiment of the present application is exemplified by image information. Further, the photosensitive device 40 can convert the acquired image information into an electronic signal.

[0034] Optionally, the photosensitive device 40 may be a camera equipped with one or more sensors of CCD (Charge-coupled Device), CMOS (Complementary Metal Oxide Semiconductor) and CIS (CMOS Image Sensor). The receiving surface of the photosensitive device 40 is arranged opposite to the identification area 203 so as to obtain the user's biometric information through the identification area 203. The identification area 203 may be a light-transmitting area formed on the display panel 20 so that light can pass through the identification area 203 and reach the photosensitive device 40 to obtain the biometric information.

[0035] Of course, in some embodiments, the photosensitive device 40 may be a light sensor, which may sense the external light environment of the electronic device 100 by acquiring light passing through a display screen.

[0036] See also Figures 4 to 6 , Figure 4 is a schematic diagram of the front structure of the display panel 20 in some embodiments of the present application, Figure 5 yes Figure 4 A schematic diagram of the cross-sectional structure of the display panel 20 along the AA direction in the embodiment, Figure 6 yes Figure 4 Schematic diagram of the cross-sectional structure of the display panel 20 along the BB direction in the embodiment. The display panel 20 can be used to provide an image display function for the electronic device 100, and the display panel 20 can be covered on one side of the middle frame 110, and the two can be bonded and fixed by adhesive.

[0037] Among them, the display surface 203 of the display panel 20 may include an identification area 203 and a non-identification area 204, and the identification area 203 is arranged on one side of the non-identification area 204, or the non-identification area 204 is arranged around the identification area 203, and the embodiment of the present application does not impose specific restrictions on this. It can be understood that the non-identification area 204 is only used to realize the display of the display panel 20 and the corresponding human-computer interaction operation. The identification area 203 can not only be used to realize the display of the display panel 20 and the corresponding human-computer interaction operation, but also allow light to pass through to be acquired by the photosensitive device 40 arranged below the identification area 203, thereby realizing the recognition function or photosensitive function of the electronic device.

[0038] It should be noted that Figure 5 It is indicated in Figure 4 A schematic cross-sectional structure diagram of the non-recognition area 204 of the display panel 20 in the embodiment, Figure 6 It is indicated in Figure 4A schematic cross-sectional structure diagram of the identification area 203 of the display panel 20 in the embodiment.

[0039] Specifically, the display panel 20 may include a substrate 210, a flat layer 220 disposed on the substrate 210, a light-emitting device 230 and a pixel definition layer 240 disposed on the flat layer 220, an encapsulation layer 250 disposed on the light-emitting device 230 and the pixel definition layer 240, a touch layer 260 disposed on the encapsulation layer 250, and a filter 270 disposed on the touch layer 260.

[0040] Among them, the substrate 210 can be configured as a driving circuit for integrating and driving the light-emitting device 230 to emit light, that is, the driving circuit can include a TFT (Thin Film Transistor) circuit. It can be understood that the TFT circuit is electrically connected to the light-emitting device 230, thereby driving the light-emitting device 230 to emit light. The source of the thin film field effect transistor is connected and conducted with the corresponding electrode of the light-emitting device 230. In other words, the source of the thin film field effect transistor and the corresponding electrode of the light-emitting device 230 are conducted through the flat layer 220. The flat layer 220 can be a single-layer structure or a multi-layer structure. The flat layer 220 can be made of organic materials, such as: photoresist, acrylic polymer, silicon-based polymer and other materials. Among them, the light-emitting device 230 can be conducted with the substrate 210 by opening a via (such as a metal via) on the flat layer 220.

[0041] It can be understood that the substrate 210 may include a base, a buffer layer disposed on the base, an active layer disposed on the buffer layer, a first gate insulating layer covering the active layer, a first gate disposed on the first gate insulating layer, a second gate insulating layer covering the first gate, a second gate disposed on the second gate insulating layer, an interlayer insulating layer covering the second gate, and a source and drain disposed on the interlayer insulating layer (not shown in the figure). Among them, the flat layer 220 is disposed on the interlayer insulating layer and covers the source and drain. It should be noted that the above-mentioned technical features of the substrate 210 are within the scope of understanding of those skilled in the art, so this application will not be repeated. In some embodiments, the first gate insulating layer and the second gate insulating layer can be combined into one gate insulating layer, in which case the first gate and the second gate can be combined into one gate. In other words, in some embodiments, the substrate 210 may include a first gate insulating layer and a first gate disposed on the first gate insulating layer; or, the substrate may include a second gate insulating layer and a second gate disposed on the second gate insulating layer. It should be noted that the terms "first", "second", and "third" in this application are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] The light emitting device 230 may include an anode 231 disposed on the flat layer 220, a cathode 232 spaced apart from the anode 231, and a light emitting layer 233 disposed between the anode 231 and the cathode 232. The anode 231 of the light emitting device 230 may be electrically connected to the substrate 210 through a metal via. The anode 231 may be made of materials such as indium tin oxide, indium zinc oxide, or zinc oxide. The anode 231 may be electrically connected to the source and drain of the substrate 210 through a metal via.

[0043] The pixel definition layer 240 may cover the flat layer 220, and may have a pixel opening exposing at least part of the anode 231, and the light-emitting layer 233 is located in the opening of the pixel definition layer 240 and formed on the anode 231. The light-emitting layer 233 may include a small molecule organic material or a polymer molecule organic material, and may be a fluorescent light-emitting material or a phosphorescent light-emitting material, and may emit red light, green light, blue light, or white light, etc.; and, according to different actual needs, in different examples, the light-emitting layer 233 may further include an electron injection layer, an electron transport layer, a hole injection layer, a hole transport layer and other functional layers. The cathode 232 covers the light-emitting layer 233, and the material of the cathode 232 includes but is not limited to one of Mg / Ag, Ca / Al, Mg / MgAg, Gd / Al, Al / Li, Sn / Al and Ag / Al alloys. Among them, the pixel definition layer 240 may be made of an organic material such as a photoresist. Of course, in some embodiments, the material of the pixel definition layer 240 may include silicon nitride, silicon oxide or silicon oxynitride. It is understandable that the display panel 20 may include a plurality of light emitting devices 230 distributed in an array, wherein the anodes 231 of the light emitting devices 230 are independent of each other, and the cathodes 232 of the light emitting devices 230 may be connected over the entire surface to serve as a common electrode of the plurality of light emitting devices 230 .

[0044] Furthermore, the pixel definition layer 240 may include a plurality of opening regions distributed in an array, and a non-opening region between adjacent opening regions. The anode 231 is disposed on the planar layer 220 and is at least partially exposed in the opening region of the pixel definition layer 240. The cathode 232 may cover the opening region and the non-opening region of the pixel definition layer 240.

[0045] The encapsulation layer 250 may be disposed on the side of the light emitting device 230 away from the substrate 210, that is, the encapsulation layer 250 may be disposed on the cathode 232 of the light emitting device 230. The encapsulation layer 250 may be a thin film encapsulation (TFE) layer structure, including a first inorganic layer 251 and a second inorganic layer 252 alternately stacked, and a buffer layer 253 disposed between the first inorganic layer 251 and the second inorganic layer 252. The first inorganic layer 251 and the second inorganic layer 252 may be a stacked combination of one or more of a silicon oxide (SiOx) layer, a silicon nitride (SiNx) layer, and a silicon oxynitride (SiON) layer. The buffer layer 253 may be formed by inkjet printing, and its material includes at least one of acrylic acid, hexamethyldisiloxane, acrylates, polycarbonates, and polystyrene.

[0046] It is understood that the stacked structure of the encapsulation layer 250 is not limited to the above embodiment. For example, in other embodiments, the first inorganic layer 251 or the second inorganic layer 252 may be provided with one or more layers respectively; the buffer layer 253 is provided between two adjacent first inorganic layers 251, or the buffer layer 253 is provided between two adjacent second inorganic layers 252, or the buffer layer 253 is provided between the adjacent first inorganic layer 251 and the second inorganic layer 252.

[0047] Optionally, the first inorganic layer 251 is disposed on the cathode 232 of the light emitting device 230 , and the second inorganic layer 252 is disposed on a side of the first inorganic layer 251 facing away from the cathode 232 .

[0048] The touch layer 260 is disposed on the side of the encapsulation layer 250 away from the substrate 210, and is used to respond to the user's touch operation and convert the corresponding touch operation into an electrical signal and transmit it to the processor of the electronic device 100, so that the electronic device 100 can respond to the user's touch operation. The touch layer 260 can be electrically connected to the substrate 210, so that the touch layer 260 can respond to the user's touch operation and convert the corresponding touch operation into an electrical signal and transmit it to the processor of the electronic device 100, so that the electronic device 100 can respond to the user's touch operation.

[0049] The filter 270 may be disposed on the touch layer 260, that is, on the side of the touch layer 260 facing away from the substrate 210. Of course, in other embodiments, when the display panel 20 removes the structural setting of the touch layer 260, the filter 270 may be disposed on the side of the encapsulation layer 250 facing away from the substrate 210.

[0050] Furthermore, the optical filter 270 may include a filter layer 271, a protective layer 272, and a cover layer 273 which are stacked in sequence. The filter layer 271 is configured to select the wavelength band light waves to be passed through, and block and filter other wavelength bands that are not desired to pass through. The protective layer 272 is arranged on the side of the filter layer 271 away from the substrate 210 to improve the flatness and light transmittance of the surface of the filter 270, and is required to have good heat resistance and strength to protect the filter film from damage. The cover layer 273 is arranged on the side of the protective layer 272 away from the filter layer 271 to improve the flatness and light transmittance of the surface of the filter 270, and at the same time ensure the heat resistance and strength of the filter 270.

[0051] The material of the cover layer 273 may be glass (such as ultra-thin glass UTG), polyethylene glycol terephthalate (PET), or polyimide (PI), etc. Optionally, the cover layer 273 may include a stacked UTG film and a PET film to improve the comprehensive performance of the cover layer 273.

[0052] The protective layer 272 is generally formed by coating a resin material on the filter layer 271. The material of the protective layer 272 can be photoresist, acrylic polymer, or silicon polymer.

[0053] The filter layer 271 may include a plurality of filter sections 2711 distributed in an array and a light shielding section 2712 disposed between adjacent filter sections 2711. One filter section 2711 is disposed corresponding to one light emitting device 230. Further, the plurality of filter sections 2711 may include a red filter section (R), a green filter section (G), and a blue filter section (B). Of course, in other embodiments, the plurality of filter sections 2711 may also include a white filter section. Different color filter sections 2711 allow visible light of the same color to pass through, while blocking other light from passing through.

[0054] In other words, the filter 2711 is disposed opposite to the opening area of ​​the pixel definition layer 240 so that the light emitted by the light emitting layer 233 can be emitted through the filter 2711. The light shielding portion 2712 is disposed opposite to the non-opening area of ​​the pixel definition layer 240 to block the light from passing through.

[0055] As mentioned above, the opening area of ​​the pixel definition layer 240 is used to limit the layout area of ​​the light emitting device 230. Based on the light emitting devices 230 distributed in an array, the non-opening area of ​​the pixel definition layer 240 can be made of the same material as the light shielding portion 2712 to block the passage of light. Furthermore, the non-opening area of ​​the pixel definition layer 240 can also prevent the light emitted by adjacent light emitting devices 230 from crosstalk, thereby eliminating the color mixing problem, improving the display contrast, and increasing the display color purity.

[0056] The photosensitive device 40 is arranged on one side of the non-display surface of the display panel 20, and is arranged opposite to the identification area 203 of the display panel 20, so as to obtain light through the identification area 203 of the display panel 20, so as to realize the corresponding function. In order to enable the photosensitive device 40 to obtain external light of the electronic device 100, a first through hole 2713 is provided on the non-opening area of ​​the pixel definition layer 240, and a second through hole 2714 opposite to the first through hole 2713 is provided on the light shielding portion 2712, so that external light can be sequentially obtained by the photosensitive device 40 through the first through hole 2713 and the second through hole 2714. Among them, the projection of the first through hole 2713 projected on the display surface of the display panel 20 is located on the identification area 203, and the projection of the second through hole 2714 projected on the display surface of the display panel 20 is located on the identification area 203. Optionally, the first through hole 2713 and the second through hole 2714 are coaxial.

[0057] It can be understood that the setting of the first through hole 2713 and the second through hole 2714 causes a reflectivity difference between the recognition area 203 and the non-recognition area 204 of the display panel 20, that is, the reflectivity of the recognition area 203 is generally higher than that of the non-recognition area 204, affecting the overall visual effect.

[0058] It should be noted that the names such as “first through hole” and “second through hole” can be interchangeable in some embodiments, or can be collectively referred to as “through hole”, and the present application does not impose any limitation on this.

[0059] See also Figure 7 , Figure 7 is a partial cross-sectional structural schematic diagram of the display panel 20 in some other embodiments of the present application, Figure 7 The cross-sectional structure of the identification area 204 of the display panel 20 is schematically shown.

[0060] The display panel 20 may include a substrate 210, a planar layer 220 disposed on the substrate 210, a light emitting device 230 and a pixel definition layer 240 disposed on the planar layer 220, an encapsulation layer 250 disposed on the light emitting device 230 and the pixel definition layer 240, a touch layer 260 disposed on the encapsulation layer 250, and a filter 270 disposed on the touch layer 260. For details, please refer to the above embodiments.

[0061] Furthermore, the surface of the flat layer 220 close to the light emitting device 230 has a concavoconvex portion 2715, and the concavoconvex portion 2715 is configured to reduce the reflectivity of the light emitting device 230. The light emitting device 230 has a portion overlapping with the concavoconvex portion 2715, so that the portion of the light emitting device 230 overlapping with the concavoconvex portion 2715 is concavoconvex, thereby reducing the reflectivity of the light emitting device 230.

[0062] Optionally, when the concave-convex portion 2715 is distributed in a local area of ​​the flat layer 220, that is, the projection of the concave-convex portion 2715 on the display surface of the display panel 20 is located on the recognition area of ​​the display panel 20, the reflectivity difference between the recognition area and the non-recognition area of ​​the display panel can be reduced, thereby improving the visual effect of the display panel.

[0063] Optionally, when the concavoconvex portions 2715 are distributed on the surface of the flat layer 220 facing away from the substrate 210, that is, when the projections of the concavoconvex portions 2715 on the display surface of the display panel 20 are respectively located on the recognition area and the non-recognition area of ​​the display panel 20, the overall reflectivity of the display panel 20 can be reduced, thereby improving the integrated black effect of the display panel 20. For example, when the electronic device 100 is in the screen-off or screen-dark state, the overall reflectivity of the display panel 20 is reduced, thereby improving the consistency of the visual effect of the appearance of the display panel 20. In addition, when the surface of the flat layer 220 is subjected to a whole-surface concavoconvex treatment, the concavoconvex structure can promote light extraction and guide the light confined in the display panel 20 to escape, thereby improving the light extraction efficiency of the display panel 20.

[0064] It is understandable that the difference in reflectivity between the identification area and the non-identification area of ​​the display panel 20 mainly comes from the reflectivity on the anode and cathode surfaces of the light-emitting device 230. As mentioned above, when the use requirements of the photosensitive device 40 are met, it is necessary to set the first through hole and the second through hole so that external light can reach the photosensitive device 40 to achieve the corresponding use function. However, since the setting of the first through hole and the second through hole exposes the cathode surface, the reflectivity of the cathode surface increases. The light reflected by the anode is partially emitted through the filter, which increases the reflectivity of the anode.

[0065] When the light-emitting device 230 and the pixel definition layer 240 are manufactured on the flat layer 220, when the light-emitting device 230 and the pixel definition layer 240 are formed on the concave-convex portion 2715, the surfaces of the light-emitting device 230 and the pixel definition layer 240 facing away from the flat layer 220 correspondingly form a concave-convex structure that matches the formation of the concave-convex portion 2715, thereby allowing the cathode and anode of the light-emitting device 230 to have a concave-convex structure, and then diffuse reflection can be formed on the cathode and the anode to reduce the reflectivity.

[0066] It is understandable that the apertures of the first through hole and the second through hole can be flexibly adjusted according to the photosensitivity requirements of the photosensitive device 40, so the present application does not impose specific restrictions on this.

[0067] In one embodiment, a plurality of protrusions are provided on the surface of the flat layer 220 close to the light emitting device 230, so that the surface of the light emitting device 230 away from the flat layer 220 forms a protrusion shape, thereby reducing the reflectivity of the light emitting device 230. In other words, the concavo-convex portion 2715 may be the location of the plurality of protrusions on the flat layer 220, so that the surface of the portion of the light emitting device 230 located on the concavo-convex portion 2715 away from the flat layer 220 may also be concavo-convex, thereby reducing the reflectivity of the light emitting device 230.

[0068] Combined with reference Figures 8 to 10 , Figure 8 is a partial cross-sectional structural schematic diagram of the display panel 20 in some other embodiments of the present application, Fig. 9 is a partial cross-sectional structural schematic diagram of the display panel 20 in some other embodiments of the present application, Fig.10 2 is a schematic diagram of a partial cross-sectional structure of a display panel 20 in some other embodiments of the present application. Figures 8 to 10 The difference between the embodiments is that the shape of the concavo-convex part 2715 is different. Specifically, the concavo-convex part 2715 can be a protrusion formed on the flat layer 220, and the shape of the protrusion can be a hemispherical shape (such as Fig. 9 As shown), wedge-shaped body (as Figure 8 as shown), and / or cones (as Fig.10 Of course, in other embodiments, the protrusion may also be in the shape of an ellipsoid, a column, and / or a rectangular body.

[0069] Further, the height H of the protrusions may be 30-100 nanometers, such as 50 nanometers, 60 nanometers, 70 nanometers, 80 nanometers, or 90 nanometers, etc. The spacing L between two adjacent protrusions may be 50-100 nanometers, such as 60 nanometers, 70 nanometers, 80 nanometers, or 90 nanometers, etc.

[0070] In addition, in one embodiment, a plurality of grooves are provided on the surface of the flat layer 220 close to the light emitting device 230, so that the surface of the light emitting device 230 away from the flat layer 220 forms a concave shape, thereby reducing the reflectivity of the light emitting device 230. That is, the concave-convex portion 2715 may be the location of the plurality of grooves on the flat layer 220, so that the surface of the portion of the light emitting device 230 located on the concave-convex portion 2715 away from the flat layer 220 may also be concave, thereby reducing the reflectivity of the light emitting device 230.

[0071] The depth of the groove may be 30-100 nanometers, such as 50 nanometers, 60 nanometers, 70 nanometers, 80 nanometers, or 90 nanometers, etc. The width of the groove may be 50-100 nanometers, such as 60 nanometers, 70 nanometers, 80 nanometers, or 90 nanometers, etc.

[0072] It can be understood that in some embodiments, grooves and protrusions are relative. For example, exposure can be performed on the surface of the flat layer to remove part of the structure to form a groove, and the unremoved part of the flat layer can be understood as a protrusion. In another example, transfer printing can be performed on the surface of the flat layer to form a protrusion, and the area where the protrusion does not cover the surface of the flat layer can be understood as a groove. In another example, a moth-eye structure can be formed on the surface of the flat layer by nanoimprinting, and the moth-eye structure can be understood as a mixed structure of grooves and protrusions.

[0073] Optionally, the flat layer 220 may be formed by stacking a plurality of film layers, wherein one of the plurality of film layers close to the light emitting device 230 is configured to form the above-mentioned concave-convex portion, and the other film layers are covered on the substrate 210 to achieve a flattening effect. Among them, one of the plurality of film layers close to the light emitting device 230 may be prepared by grayscale mask exposure, electron beam lithography, nanoimprinting, or holographic lithography to form the above-mentioned concave-convex portion.

[0074] In summary, the present application differentiates the film structure of the identification area of ​​the display panel, thereby reducing the reflectivity of the identification area, that is, reducing the difference in reflectivity between the identification area and the non-identification area, and can improve the display effect of the display panel while meeting the transmittance requirements of the photosensitive device. Specifically, by setting a concave-convex portion on a part of the flat layer, the surface of the anode and cathode on the concave-convex portion is uneven, thereby reducing the reflectivity of the anode and cathode, and then reducing the difference in reflectivity between the identification area and the non-identification area, thereby improving the visual effect.

[0075] In addition, when the surface of the flat layer is subjected to an entire surface roughening treatment, the color separation phenomenon caused by large-angle light reflection can be improved, and the display effect can be further optimized.

[0076] The display panel and electronic device provided in the embodiments of the present application provide a concave-convex portion on the surface of the flat layer so that the portion where the light-emitting device overlaps with the concave-convex portion is concave-convex, thereby reducing the reflectivity of the light-emitting device and improving the display effect of the display panel.

[0077] Furthermore, in some other embodiments of the present application, a mobile terminal device 900 is provided. Fig.11 , Fig.11It is a schematic diagram of the structure of a mobile terminal device in other embodiments of the present application. The mobile terminal device can be a mobile phone, a tablet computer, a laptop computer, a wearable device, etc. The mobile phone is used as an example in the diagram of this embodiment. The structure of the terminal device 900 may include an RF circuit 910, a memory 920, an input unit 930, a display unit 940 (i.e., the display panel 20 in the above embodiment), a sensor 950, an audio circuit 960, a wifi module 970, a processor 980, and a power supply 990. Among them, the RF circuit 910, the memory 920, the input unit 930, the display unit 940, the sensor 950, the audio circuit 960, and the wifi module 970 are respectively connected to the processor 980; the power supply 990 is used to provide power to the entire terminal device 900.

[0078] Specifically, the RF circuit 910 is used to receive and send signals; the memory 920 is used to store data instruction information; the input unit 930 is used to input information, which may specifically include a touch panel 931 and other input devices 932 such as operation buttons; the display unit 940 may include a display panel 941 (i.e., the display panel 20 in the above embodiment); the sensor 950 includes an infrared sensor, a laser sensor, etc., for detecting user approach signals, distance signals, etc.; the speaker 961 and the microphone (or microphone) 962 are connected to the processor 980 through the audio circuit 960 for receiving and sending sound signals; the wifi module 970 is used to receive and transmit wifi signals, and the processor 980 is used to process data information of the mobile terminal device. For the relevant technical features of the display module, please refer to the relevant description of the above display module embodiment, which will not be described in detail here.

[0079] It should be noted that the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0080] The above descriptions are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A display panel, characterized in that: The display panel comprises: A substrate, a flat layer disposed on the substrate, and a light emitting device disposed on the flat layer; The flat layer has a concave-convex portion near the surface of the light-emitting device, and the light-emitting device has a portion overlapping the concave-convex portion, so that the portion of the light-emitting device overlapping the concave-convex portion is concave-convex, thereby reducing the reflectivity of the light-emitting device.

2. The display panel according to claim 1, characterized in that: A plurality of protrusions are arranged on the surface of the flat layer close to the light emitting device, or a plurality of grooves are arranged on the surface of the flat layer close to the light emitting device.

3. The display panel according to claim 2, characterized in that: The depth of the groove is 30-100 nanometers, and the width of the groove is 50-100 nanometers; or, the height of the protrusion is 30-100 nanometers, and the distance between two adjacent protrusions is 50-100 nanometers.

4. The display panel according to claim 1, characterized in that: The light-emitting device includes a pixel definition layer, an anode, a cathode and a light-emitting layer; the pixel definition layer has an opening area, the pixel definition layer and the anode are arranged on the flat layer, and the anode is at least partially located in the opening area of ​​the pixel definition layer; the cathode is arranged on the pixel definition layer, and the light-emitting layer is arranged between the anode and the cathode; wherein the cathode and the anode respectively have portions overlapping with the concave-convex portion to reduce the reflectivity of the cathode and the anode.

5. The display panel according to claim 4, characterized in that: The display surface of the display panel includes a recognition area and a non-recognition area, and the projection of the concavo-convex portion on the display surface is located on the recognition area.

6. The display panel according to claim 5, characterized in that: The pixel definition layer further includes a non-opening area, the non-opening area of ​​the pixel definition layer is provided with a first through hole, and the projection of the first through hole on the display surface is located on the identification area; the display panel further includes a filter, and the filter is provided on a side of the light emitting device away from the substrate; The filter has a filtering portion opposite to the opening area and a shading portion opposite to the non-opening area; the shading portion is provided with a second through hole opposite to the first through hole, and the projection of the second through hole on the display surface is located on the identification area.

7. The display panel according to claim 1, characterized in that: The concavoconvex part is the part where the protrusions on the flat layer are located, and the shape of the protrusions is at least one of an ellipsoid, a hemisphere, a wedge, a column, a rectangle, and a cone.

8. An electronic device, characterized in that: It comprises a shell component and a display panel connected to one side of the shell component; wherein the display panel is the display panel according to any one of claims 1-8.

9. The electronic device according to claim 8, characterized in that: The electronic device also includes a photosensitive device arranged between the shell assembly and the display panel; the display surface of the display panel includes a recognition area and a non-recognition area, the projection of the concave-convex portion on the display surface is located on the recognition area, and the photosensitive device is opposite to the recognition area.

10. The electronic device according to claim 9, characterized in that: The electrodes of the light-emitting device include an anode and a cathode arranged at intervals, and the light-emitting device also includes a pixel definition layer and a light-emitting layer; the pixel definition layer includes an opening area and a non-opening area, the pixel definition layer and the anode are arranged on the flat layer, and the anode is at least partially located in the opening area of ​​the pixel definition layer; the cathode is arranged on the pixel definition layer, and the light-emitting layer is arranged between the anode and the cathode; the display panel also includes a filter arranged on a side of the light-emitting device away from the substrate; Among them, the non-opening area of ​​the pixel definition layer is provided with a first through hole, and the projection of the first through hole on the display surface is located on the identification area; the filter has a filtering part opposite to the opening area and a shading part opposite to the non-opening area; the shading part is provided with a second through hole opposite to the first through hole.

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