Display panel and electronic equipment

Abstract

The invention provides a display panel and electronic equipment. The display panel comprises a substrate, a light-emitting device and a pixel definition layer which are arranged on the substrate, and a packaging layer arranged on the light-emitting device and the pixel definition layer; the pixel definition layer is provided with opening areas distributed in an array mode and non-opening areas arranged between the adjacent opening areas, and the opening areas are configured to be used for limiting the light-emitting devices; the packaging layer is provided with a light blocking part, and the projection of the light blocking part projected on the pixel definition layer surrounds the periphery of the opening area. According to the display panel provided by the invention, the light blocking part is arranged in the packaging layer, so that the blocked angle range of the light emitted by the light-emitting device can be reduced, the brightness attenuation of the large-viewing-angle light of the display panel can be further reduced, and the color cast phenomenon between the small-angle light emitted by the light-emitting device and the large-angle light 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, BM will block the brightness of light at large angles, making it difficult to balance the color deviation problem of the visual angle. Summary of the invention

[0005] On the one hand, an embodiment of the present application provides a display panel, which includes a substrate, a light-emitting device and a pixel definition layer arranged on the substrate, and an encapsulation layer arranged on the light-emitting device and the pixel definition layer; the pixel definition layer has opening areas distributed in an array and non-opening areas arranged between adjacent opening areas, and the opening areas are configured to limit the light-emitting device; wherein the encapsulation layer has a light-blocking portion, and the projection of the light-blocking portion on the pixel definition layer surrounds the periphery of the opening area.

[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 can reduce the angle range in which the light emitted by the light-emitting device is blocked by setting a light-blocking portion in the encapsulation layer, thereby reducing the brightness attenuation of the display panel's wide-angle light, thereby improving the color deviation phenomenon between the small-angle relationship and large-angle light emitted by the light-emitting device. 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 paying any 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 front structure of a display panel in some embodiments of the present application;

[0012] Figure 4 yes Figure 3 A schematic diagram of a cross-sectional structure of a display panel along the AA direction in the embodiment;

[0013] Figure 5 yes Figure 4 A schematic diagram of a partial structure of a display panel in an embodiment;

[0014] Figure 6 is a schematic diagram of a partial cross-sectional structure of a display panel in some other embodiments of the present application;

[0015] Figure 7 yes Figure 6 A schematic diagram of light emission of a display panel in an embodiment;

[0016] Figure 8 is a schematic diagram of the layout of microlenses in some embodiments of the present application;

[0017] Fig. 9 It is a schematic diagram of the structural composition of mobile terminal devices in other embodiments of the present application. DETAILED DESCRIPTION

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] See also Figure 3 and Figure 4 , Figure 3 is a schematic diagram of the front structure of the display panel 20 in some embodiments of the present application, Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure of the display panel 20 along the AA 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.

[0028] 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.

[0029] 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, thin film field effect 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.

[0030] 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.

[0031] 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.

[0032] 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 .

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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 .

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] In other words, the filter portion 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 portion 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. The material of the light shielding portion 2712 can be made of an organic light-proof material or an inorganic light-proof material.

[0044] 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.

[0045] See also Figure 5 , Figure 5 yes Figure 4 A schematic diagram of a partial structure of the display panel 20 in the embodiment.

[0046] The light emitted by the light emitting device 230 includes a first light X1 and a second light X2, the first light X1 has a first angle θ1 with the light emitting direction X0 of the display panel 20, and the second light X2 has a second angle θ2 with the light emitting direction X0 of the display panel 20. The light emitting direction X0 of the display panel 20 may be a direction perpendicular to the display surface of the display panel 20.

[0047] Further, the first light X1 can be emitted through the filter portion 2711, and the second light X2 can reach the shading portion 2712 but cannot be emitted or will be greatly attenuated. Among them, the first angle θ1 is smaller than the second angle θ2. It can be understood that the range of the first angle θ1 can limit the field of view of the display panel 20, that is, the larger the range of the first angle θ1, the wider the field of view of the display panel 20. However, based on the existence of the shading portion 2712, when the first angle θ1 exceeds a certain range, the light emitted by the light-emitting device 230 reaches the shading portion 2712 and is blocked or greatly attenuated, so that there is a color deviation between the small-angle light and the large-angle light emitted by the light-emitting device 230, which makes it difficult for the display panel 20 to balance the color deviation problem of the viewing angle.

[0048] Optionally, the first angle θ1 may be 15°-45°, and the second angle θ2 may be 45°-90°. That is, when the light emitting angle of the light emitting device 230 is greater than 45°, the light with the light emitting angle greater than 45° will irradiate the light shielding portion 2712 and cannot be emitted or will be greatly attenuated.

[0049] See also Figure 6 , Figure 62 is a schematic diagram of a partial cross-sectional structure of a display panel 20 in some other embodiments of the present application. 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. For details, please refer to the aforementioned embodiments.

[0050] The encapsulation layer 250 has a light blocking portion 2501, and the projection of the light blocking portion 2501 on the pixel definition layer 240 surrounds the periphery of the opening area provided in the pixel definition layer 240. It can be understood that the light blocking portion 2501 can reduce the reflectivity of the surface of the cathode 232, thereby reducing the overall reflectivity of the display panel 20, thereby improving the display effect of the display panel 20.

[0051] Furthermore, the specific function and material of the light blocking portion 2501 can be similar to the light shielding portion 2712 in the aforementioned embodiment, that is, it can be understood that the light shielding portion 2712 in the filter 270 is moved to the encapsulation layer 250 to form the light blocking portion 2501. Compared with the technical solution of setting the light shielding portion 2712 in the filter 270, this embodiment sets the light blocking portion 2501 in the encapsulation layer 250, so that the distance between the light blocking portion 2501 and the light emitting surface of the light emitting device 230 in the light emitting direction of the display panel 20 is smaller than the distance between the light shielding portion 2712 and the light emitting surface of the light emitting device 230 in the light emitting direction of the display panel 20, thereby effectively reducing the brightness attenuation of the light with a large viewing angle.

[0052] Combined with reference Figure 5 and Figure 7 , Figure 7 yes Figure 6 Schematic diagram of light emission of the display panel 20 in the embodiment. The light emitted by the light emitting device 230 may further include a third light ray X3, and a third angle θ3 is formed between the third light ray X3 and the light emission direction X0 of the display panel 20.

[0053] like Figure 5 As shown, the second light X2 cannot be emitted or will be greatly attenuated due to being blocked by the light shielding portion 2712. The second angle θ2 can be 45°-90°, that is, when the light emitting angle of the light emitting device 230 is greater than 45°, the light with a light emitting angle greater than 45° will be irradiated to the light shielding portion 2712 and cannot be emitted or will be greatly attenuated.

[0054] like Figure 7As shown, the third light ray X3 cannot be emitted or will be greatly attenuated due to being blocked by the light blocking portion 2501. The third angle θ3 can be 70°-90°, that is, when the light emitting angle of the light emitting device 230 is greater than 70°, the light with a light emitting angle greater than 70° will be irradiated to the light blocking portion 2501 and cannot be emitted or will be greatly attenuated.

[0055] In summary, by replacing the light shielding portion 2712 in the filter 270 with the light blocking portion 2501 in the encapsulation layer 250, the angle range where light cannot be emitted can be reduced, thereby reducing the brightness attenuation of light with a large viewing angle. It can be understood that Figure 5 and Figure 7 The angle range of the light that cannot be emitted or blocked is only exemplified, but other ranges are not limited. For example, in other embodiments, the second angle θ2 may be 60°-90°, and the third angle θ3 may be 80°-90°. Figure 7 , the range of the first angle θ1 and the partial range of the second angle θ2 can jointly define the viewing angle of the display panel 20. Figure 5 In the embodiment, the color shift phenomenon between the small-angle light and the large-angle light emitted by the light emitting device 230 is improved to balance the color shift of the viewing angle.

[0056] In one embodiment, the light-blocking portion 2501 may be made of a ferrous metal material to block light from passing through. Compared with organic light-proof materials, the light-blocking portion 2501 made of a ferrous metal material is thinner under the premise of having the same light-blocking effect. For example, the light-blocking portion 2501 made of a conventional organic light-proof material generally has a thickness of 1.5 microns to 2.5 microns to achieve a better light-shielding and light-blocking effect; while the light-blocking portion 2501 made of a ferrous metal material can achieve a better light-shielding and light-blocking effect when its thickness does not exceed 1 micron. Optionally, the thickness of the light-blocking portion 2501 may be 300 nanometers, 400 nanometers, 500 nanometers, 600 nanometers or 700 nanometers, etc.

[0057] It is understandable that the brightness attenuation defect of large-angle light can be further improved by reducing the thickness of the light-blocking portion 2501. In addition, in order to reduce the reflectivity of the black metal surface, the black metal surface can be ashed to meet the reflectivity requirements.

[0058] See again Figure 6The display panel 20 may further include a microlens 2701 disposed on a side of the encapsulation layer 250 away from the substrate 210, the microlens 2701 being disposed opposite to the opening area of ​​the pixel definition layer 240, and the light emitted by the light emitting device 230 may be emitted from the display panel 20 through the microlens 2701. In other words, the microlens 2701 is disposed opposite to the light emitting device 230, so that the light emitted by the light emitting device 230 can be emitted through the microlens 2701. Optionally, the projection of the microlens 2701 on the pixel definition layer 240 covers the opening area of ​​the pixel definition layer 240.

[0059] It can be understood that in this embodiment, a microlens 2701 is provided on the encapsulation layer 250 to replace the filter unit 2711 in the filter 270 of the aforementioned embodiment, so that the microlens 2701 not only has the filtering function of the filter unit 2711, but also has a light-collecting function to improve the light extraction efficiency of the display panel 20. The light X emitted by the light-emitting device 230 is gathered in the middle of the viewing angle under the action of the microlens 2701 to improve the light extraction efficiency of the display panel 20.

[0060] In this embodiment, by disassembling the filter layer 271 of the filter 270 into a light blocking portion 2501 arranged in the encapsulation layer 250 and a microlens 2701 arranged on the encapsulation layer 250, not only can the angle range where light cannot be emitted be narrowed to reduce the brightness attenuation of light at a large viewing angle, but also the focusing effect of the microlens 2701 can be used to improve the light extraction efficiency of the display panel 20 at a normal viewing angle.

[0061] In one embodiment, the display panel 20 may further include a protective layer 272, and the material and position of the protective layer 272 may refer to the above-mentioned embodiment. Specifically, the protective layer 272 is disposed on the side of the encapsulation layer 250 away from the substrate 210, and covers the microlens 2701. The refractive index of the material of the microlens 2701 is greater than the refractive index of the material of the protective layer 272, so as to utilize the refractive index difference between the two materials to shape the beam, and gather the lateral light emitted by the light emitting device 230 to the middle viewing angle, thereby improving the light extraction efficiency of the display panel 20.

[0062] As mentioned above, the encapsulation layer 250 includes a first inorganic layer 251 and a second inorganic layer 252 which are stacked, and a buffer layer 253 disposed between the first inorganic layer 251 and the second inorganic layer 252. Among them, the light blocking portion 2501 is disposed on the first inorganic layer 251, and the first inorganic layer 251 is disposed on the side of the second inorganic layer 252 close to the light emitting device 230. Optionally, the light blocking portion 2501 can be disposed on the side of the first inorganic layer 251 close to the light emitting device 230, or can be embedded in the first inorganic layer 251, or can also be disposed on the side of the first inorganic layer 251 away from the light emitting device 230. Of course, in other embodiments, the light blocking portion 2501 can also be disposed on other film layers of the encapsulation layer 250. It can be understood that when the distance between the light blocking portion 2501 and the light emitting device 230 in the light emitting direction of the display panel 20 (ie, the thickness direction of the display panel 20) is smaller, the brightness attenuation of the light with a large viewing angle is lower, that is, the color deviation of the large viewing angle is lower.

[0063] In one embodiment, the refractive index of the material of the first inorganic layer 251 and / or the second inorganic layer 252 is greater than that of the protective layer 272 , that is, similar to or the same as that of the microlens 2701 , to avoid total reflection inside the display panel 20 and result in low light extraction efficiency.

[0064] In one embodiment, the buffer layer 253 can be formed by inkjet printing, and its material includes at least one of acrylic acid, hexamethyldisiloxane, acrylates, polycarbonates and polystyrene. Among them, the buffer layer 253 is usually formed by inkjet printing, and its thickness is usually more than 10 microns. In order to improve the defect that the thickness of the buffer layer 253 is too thick and causes the light attenuation of a large viewing angle to be too fast, the buffer layer 253 of the embodiment of the present application can be formed by coating, so that the thickness of the buffer layer 253 can be 2-8 microns. For example, the thickness of the buffer layer 253 can be 3 microns, 4 microns, 5 microns, 6 microns, or 7 microns. Among them, the material of the buffer layer 253 can be photoresist, and the photoresist can be coated. When the thickness is thin, the flatness of the film layer can be ensured to be better, reducing the stress problem in the encapsulation layer 250. Of course, in other embodiments, the buffer layer 253 can also be made of transparent colloids such as transparent resins.

[0065] See also Figure 8 , Figure 8 is a schematic diagram of the layout of the microlens 2701 in some embodiments of the present application.

[0066] The pixel definition layer 240 has opening regions 2401 distributed in an array and non-opening regions 2402 disposed between adjacent opening regions 2401. Light emitted by the light emitting device 230 can be emitted from the openings of the opening regions 2401 to exit the display panel 20. The microlens 2701 is disposed opposite to the opening region 2401, and light emitted by the light emitting device 230 can be emitted from the display panel 20 through the microlens 2701.

[0067] Furthermore, based on the fact that the light emitting device 230 can emit light of different colors (e.g., the three primary colors of RGB), the opening area 2401 on the pixel definition layer 240 is different for light emitting devices 230 of different colors. In other words, the opening area 2401 of the pixel definition layer 240 includes a first opening 2401a, a second opening 2401b, and a third opening 2401c. The first opening 2401a is used to limit the light emitting device 230 that emits blue light, the second opening 2401b limits the light emitting device 230 that emits red light, and the third opening 2401c limits the light emitting device 230 that emits green light. Among them, the opening area S of the first opening 2401a is 2400 mm / s. b The opening area S is larger than the second opening 2401b. r , the opening area S of the second opening 2401b r The opening area S is larger than the opening area S of the third opening 2401c. g , that is, S b >S r >S g .

[0068] Based on this, the microlenses 2701 are also different for opening areas 2401 with different opening areas. Specifically, the microlens 2701 may include a first lens 2701a arranged opposite to the first opening 2401a, a second lens 2701b arranged opposite to the second opening 2401b, and a third lens 2701c arranged opposite to the third opening 2401c. Among them, in the optical axis direction of the microlens 2701 (that is, the thickness direction of the display panel 20, or the light emitting direction), the height h1 of the first lens 2701a is greater than the height h2 of the second lens 2701b, and the height h2 of the second lens 2701b is greater than the height h3 of the third lens 2701c, that is, h1>h2>h3. It can be understood that in S b >S r >S g Under the premise of h1>h2>h3, the large view character bias phenomenon can be improved.

[0069] Optionally, the height h1 of the first lens 2701a protruding from the encapsulation layer 250 may be 4-5 microns, the height h2 of the second lens 2701b protruding from the encapsulation layer 250 may be 3.5-4 microns, and the height h3 of the third lens 2701c protruding from the encapsulation layer 250 may be 2.5-3.5 microns. For example, the height h1 may be 4 microns, the height h2 may be 3.5 microns, and the height h3 may be 3 microns.

[0070] It is understandable that the above is only an exemplary description of S b , S g , S r In actual needs, when S b , S g , S r When the size relationship between them changes, the size relationship between the first lens 2701a, the second lens 2701b, and the third lens 2701c can be adaptively adjusted, so this embodiment of the present application will not be described in detail.

[0071] In one embodiment, based on the different opening areas of the first opening 2401a, the second opening 2401b, and the third opening 2401c, the coverage areas of the first lens 2701a, the second lens 2701b, and the third lens 2701c may also be different. Optionally, the projection area S1 of the first lens 2701a projected on the encapsulation layer 250 is greater than the projection area S2 of the second lens 2701b projected on the encapsulation layer 250, and the projection area S2 of the second lens 2701b projected on the encapsulation layer 250 is greater than the projection area S3 of the third lens 2701c projected on the encapsulation layer 250, that is, S1>S2>S3. In actual needs, when S b , S g , S r When the size relationship between them changes, the size relationship between S1, S2, and S3 can be adaptively adjusted, so this embodiment of the present application will not be described in detail.

[0072] In addition, in some embodiments, a single microlens 2701 can be disassembled into multiple microlenses. Figure 4 In the embodiment, the light shielding portion 2712 is provided with a micro lens, that is, a single micro lens or a plurality of micro lenses can be provided on each light shielding portion 2712 to achieve a light focusing effect, thereby improving the light extraction efficiency of the display panel 20 .

[0073] In summary, the display panel and electronic device provided by the embodiments of the present application can reduce the angle range in which the light emitted by the light-emitting device is blocked by arranging a light-blocking portion in the encapsulation layer, thereby reducing the brightness attenuation of the light of the display panel at a large viewing angle, thereby improving the color shift phenomenon between the small-angle relationship and the large-angle light emitted by the light-emitting device. In addition, by arranging a microlens on the encapsulation layer, the light emitted by the light-emitting device is gathered to the middle of the viewing angle under the focusing effect of the microlens, thereby improving the light extraction efficiency of the display panel.

[0074] Furthermore, in some other embodiments of the present application, a mobile terminal device 900 is provided. Fig. 9 , Fig. 9 It 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.

[0075] 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.

[0076] 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.

[0077] 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 light-emitting device and a pixel definition layer disposed on the substrate, and an encapsulation layer disposed on the light-emitting device and the pixel definition layer; the pixel definition layer has opening areas distributed in an array and non-opening areas disposed between adjacent opening areas, and the opening areas are configured to limit the light-emitting device; The encapsulation layer has a light-blocking portion, and a projection of the light-blocking portion on the pixel definition layer is arranged around the periphery of the opening area.

2. The display panel according to claim 1, characterized in that: The display panel further comprises a microlens disposed on a side of the encapsulation layer away from the substrate, the microlens being arranged opposite to the opening area of ​​the pixel definition layer, and the light emitted by the light emitting device is emitted out of the display panel through the microlens.

3. The display panel according to claim 2, characterized in that: The display panel further comprises a protection layer, which is arranged on a side of the encapsulation layer away from the substrate and covers the microlens.

4. The display panel according to claim 3, characterized in that: The refractive index of the material of the microlens is greater than the refractive index of the material of the protection layer.

5. The display panel according to claim 3, characterized in that: The encapsulation layer includes a first inorganic layer and a second inorganic layer stacked together, and a buffer layer disposed between the first inorganic layer and the second inorganic layer; wherein the light-blocking portion is disposed on the first inorganic layer, and the first inorganic layer is disposed on a side of the second inorganic layer close to the light-emitting device.

6. The display panel according to claim 5, characterized in that: The refractive index of the material of the second inorganic layer and / or the first inorganic layer is greater than the refractive index of the material of the protective layer.

7. The display panel according to claim 5, characterized in that: The thickness of the buffer layer is 2-8 microns.

8. The display panel according to claim 5, characterized in that: The material of the buffer layer is photoresist.

9. The display panel according to claim 2, characterized in that: The opening area of ​​the pixel definition layer includes a first opening, a second opening and a third opening, and the microlens includes a first lens arranged opposite to the first opening, a second lens arranged opposite to the second opening, and a third lens arranged opposite to the third opening; Wherein, the opening area of ​​the first opening is larger than the opening area of ​​the second opening, and the opening area of ​​the second opening is larger than the opening area of ​​the third opening; In the optical axis direction of the microlens, the height of the first lens is greater than the height of the second lens, and the height of the second lens is greater than the height of the third lens.

10. The display panel according to claim 9, characterized in that: The height of the first lens is 4-5 microns, the height of the second lens is 3.5-4 microns, and the height of the third lens is 2.5-3.5 microns.

11. The display panel according to claim 1, characterized in that: The material of the light-blocking portion is a ferrous metal material; the thickness of the light-blocking portion in the light-emitting direction of the display panel does not exceed 1 micrometer.

12. 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 1-11.

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