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, wherein the light-emitting device and the pixel definition layer are arranged on the substrate; 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; wherein the non-opening area is provided with a turning part surrounding the opening area, and part of light emitted by the light-emitting device can reach the turning part, changes the direction and then is emitted out of the display panel. According to the display panel and the electronic equipment provided by the invention, the steering part surrounding the opening area of the pixel definition layer is arranged on the pixel definition layer, so that large-angle light rays emitted by the light-emitting device can reach the steering part and are emitted out of the display panel after the direction of the light rays is changed, and the light emitting efficiency and the light emitting effect of the display panel are 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, and a light-emitting device and a pixel definition layer arranged on the substrate; 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 non-opening area is provided with a turning portion surrounding the opening area, and part of the light emitted by the light-emitting device can reach the turning portion and change direction before emitting from the display panel.

[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, by providing a turning portion surrounding the opening area of ​​the pixel definition layer, the large-angle light emitted by the light-emitting device can reach the turning portion and change direction before emitting from the display panel, thereby improving the light extraction efficiency and light extraction effect of the display panel. In addition, by providing the turning portion, the propagation direction of the large-angle light emitted by the light-emitting device can be changed, thereby avoiding optical crosstalk between different pixels. 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 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 is a schematic diagram of the layout of the steering part in some embodiments of the present application;

[0016] Figure 8 yes Figure 7 A schematic diagram of the principle of the turning part changing the light direction in the embodiment;

[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 3is 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) 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 6 2 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] Among them, a turning portion 241 surrounding the opening area is provided on the non-opening area of ​​the pixel definition layer 240, and part of the light emitted by the light emitting device 230 can reach the turning portion 241 to change direction. As mentioned above, part of the light emitted by the light emitting device 230 cannot be emitted or will be greatly attenuated due to reaching the light shielding portion 2712, thereby affecting the light emission effect and efficiency of the display panel 20. In the embodiment of the present application, by providing a turning portion 241 surrounding the opening area of ​​the pixel definition layer 240, part of the light emitted by the light emitting device 230 can reach the turning portion 241 and change direction, and then can be emitted through the filter portion 2711, thereby improving the light emission effect and efficiency of the display panel 20.

[0051] Furthermore, since the large-angle light (i.e., the second light) emitted by the light-emitting device 230 cannot be emitted or will be greatly attenuated due to the obstruction of the shading portion 2712, a turning portion 241 is provided in the non-opening area of ​​the pixel definition layer 240, so that the large-angle light (i.e., the second light) emitted by the light-emitting device 230 can be irradiated by the turning portion 241, then changed direction and can be emitted from the display panel 20 through the filter portion 2711, thereby improving the light emission effect and efficiency of the display panel 20.

[0052] See also 7 and Figure 8 , Figure 7 is a schematic diagram of the layout of the steering portion 241 in some embodiments of the present application, Figure 8 yes Figure 7 Schematic diagram of the principle of the turning portion 241 changing the light direction in the embodiment.

[0053] The pixel definition layer 240 has an array of opening areas 2401 and a non-opening area 2402 disposed between adjacent opening areas 2401. The light emitted by the light emitting device 230 can be emitted from the opening of the opening area 2401 to exit the display panel 20. The turning portion 241 is disposed around the periphery of the opening area 2401 to be configured to change the light direction of the large-angle light (i.e., the second light) emitted by the light emitting device 230, so that the part of the light can be emitted from the display panel 20.

[0054] Specifically, the first light X1 emitted by the light emitting device 230 can directly pass through the opening area 2401 and emit from the display panel 20, and the second light X2 is first irradiated onto the turning portion 241 and then changes direction and then emits from the display panel 20 to avoid being blocked by the light shielding portion 2712. That is, the turning portion 241 can change the large-angle light (i.e., the second light) emitted by the light emitting device 230, so that the second light can avoid being blocked by the light shielding portion 2712 and emit from the display panel 20.

[0055] In one embodiment, the turning portion 241 and the opening edge of the opening area 2401 have a spacing J to prevent the turning portion 241 from blocking the opening area 2401 and affecting the emission of the first light X1. The spacing J may be 1-6 microns, such as 2 microns, 3 microns, 4 microns or 5 microns.

[0056] Furthermore, based on the fact that the light emitting device 230 can emit light of different colors (e.g., RGB three primary colors), the opening area of ​​the opening region 2401 on the pixel definition layer 240 is different for light emitting devices 230 of different colors. The opening area of ​​the opening region 2401 for limiting the light emitting device 230 emitting blue light is defined as S bThe opening area of ​​the opening region 2401 of the light emitting device 230 for limiting the green light emission is S g The opening area of ​​the opening region 2401 of the red light emitting device 230 for limiting the position is S r To meet the display requirements of the display panel 20, S b >S g >S r .

[0057] Based on this, for opening regions 2401 with different opening areas, the spacing J is different. Define the opening area as S b There is a distance J between the opening area and the corresponding turning portion 241 b , the opening area is S g There is a distance J between the opening area and the corresponding turning portion 241 g , the opening area is S r There is a distance J between the opening area and the corresponding turning portion 241 r Among them, J b >J g >J r For example, J b Can be 5 microns, J g Can be 4.5 microns, J r It can be 4 microns.

[0058] 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, J b , J g , J r The size relationship between them is adaptively adjusted, so I will not go into details here.

[0059] In one embodiment, the turning portion 241 has a width W in the radial direction of the opening area 2401, and the width W may be 3-6 microns, for example, 4 microns, 5 microns, or 5.5 microns. It can be understood that setting the turning portion 241 to have a certain width can improve the light extraction efficiency.

[0060] As mentioned above, the turning portion 241 is arranged around the periphery of the opening area 2401, that is, the turning portion 241 is roughly an annular structure. Further, in order to allow the light irradiated on the turning portion 241 to be emitted from the display panel 20 after changing direction, the end surface area of ​​the turning portion 241 close to the pixel definition layer 240 can be larger than the end surface area of ​​the turning portion 241 away from the pixel definition layer 240. Optionally, the cross-sectional area of ​​the turning portion 241 gradually decreases in the direction away from the pixel definition layer 240, and the cross-sectional area is the cross-sectional area of ​​the turning portion 241 parallel to the surface of the pixel definition layer 240.

[0061] Furthermore, the turning portion 241 may have a side surface inclined relative to the surface of the pixel definition layer 240, and the angle of inclination of the side surface relative to the surface of the pixel definition layer 240 is 60°-90°; for example, it may be 65°, 70°, 75°, 80°, or 85°.

[0062] In one embodiment, the cross-section of the turning portion 241 may be semicircular, semi-elliptical, trapezoidal, triangular, or rectangular, etc., which will not be described in detail. The cross-section of the turning portion 241 is a cross-section of the turning portion 241 perpendicular to the surface of the pixel definition layer 240.

[0063] In one embodiment, a reflective film is disposed on the surface of the turning portion 241, and the second light is reflected on the reflective film to change direction, so that the second light can be emitted from the display panel 20. By disposing a reflective film on the surface of the turning portion 241, the reflectivity of the second light can be improved.

[0064] Furthermore, the reflective film may include a first refractive layer and a second refractive layer stacked together, and the first refractive layer and the second refractive layer cooperate to form a Bragg reflector. The reflective film may be formed by sequentially depositing the first refractive layer and the second refractive layer on the surface of the turning portion 241. Of course, in other embodiments, the stacked structure of the reflective film is not limited to the first refractive layer and the second refractive layer, and may also include a plurality of stacked refractive layers to realize a Bragg reflector. It is understandable that the names "first refractive layer", "second refractive layer" and "refractive layer" may be interchangeable in some embodiments, and the present application does not limit this.

[0065] It should be noted that a Bragg reflector, also known as a distributed Bragg reflector, is a reflector structure that includes an adjustable multilayer structure composed of at least two optical materials. The most commonly used is a quarter reflector, in which the thickness of each layer corresponds to a quarter of the wavelength. Of course, if the reflector is used for a larger angle of incidence, the layer thickness needs to be relatively larger.

[0066] The working principle of the Bragg reflector is as follows. Fresnel reflection occurs at each interface between two materials. At the working wavelength, the optical path difference of the reflected light at two adjacent interfaces is half a wavelength. In addition, the sign of the reflection coefficient at the interface will also change. Therefore, all reflected light at the interface undergoes destructive interference, resulting in strong reflection. The reflectivity is determined by the number of layers of the material and the refractive index difference between the materials. The reflection bandwidth is mainly determined by the refractive index difference.

[0067] It can be understood that the refractive index of the first refractive layer and the second refractive layer has a significant difference to meet the working principle of the Bragg reflector. Optionally, the material of the first refractive layer can be silicon nitride, and the material of the second refractive layer can be silicon oxide. Optionally, the material of the first refractive layer can be zirconium oxide, and the material of the second refractive layer can be titanium monoxide. Optionally, the material of the first refractive layer can be one of zirconium dioxide, titanium dioxide, silicon oxide, silicon nitride and niobium pentoxide, and the material of the second refractive layer can be another of zirconium dioxide, titanium dioxide, silicon oxide, silicon nitride and niobium pentoxide, so that the refractive index of the first refractive layer and the second refractive layer has a significant difference, thereby meeting the working principle of the Bragg reflector.

[0068] See again Figure 6 The display panel 20 includes a filter 270 disposed on a side of the light emitting device 230 away from the substrate 210, and the filter 270 includes a filter portion 2711 disposed opposite to the light emitting device 230 and a light shielding portion 2712 disposed between adjacent filter portions 2711. The first light is emitted from the display panel 20 through the filter portion 2711, and the second light is irradiated to the turning portion 241 and redirected to be emitted from the display panel 20 through the filter portion 2711, so as to improve the light emitting effect and efficiency of the display panel.

[0069] Furthermore, the shading portion 2712 can be made of a ferrous metal material to block light from passing through. Compared with organic opaque materials, the shading portion 2712 made of a ferrous metal material can be thinner under the premise of having the same light-blocking effect. For example, the shading portion made of a conventional organic opaque material generally has a thickness of 1.5 microns to 2.5 microns to achieve a better light-blocking effect; while the shading portion 2712 made of a ferrous metal material can achieve a better light-blocking effect when its thickness does not exceed 1 micron. Optionally, the thickness of the shading portion 2712 can be 300 nanometers, 400 nanometers, 500 nanometers, 600 nanometers or 700 nanometers, etc.

[0070] It is understandable that by reducing the thickness of the light shielding portion, the brightness attenuation defect of large-angle light can be further improved. 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.

[0071] See again Figure 6 The display panel 20 includes an encapsulation layer 250 disposed on the light-emitting device 230, and the encapsulation layer 250 may include a first inorganic layer 251 and a second inorganic layer 252 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. Among them, the buffer layer 253 is usually formed by inkjet printing, and its thickness is usually more than 10 microns.

[0072] In one embodiment, in order to improve the defect that the thickness of the buffer layer 253 is too thick and causes the light attenuation at a wide viewing angle to be too fast, the buffer layer 253 of the embodiment of the present application is 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. In the case of a thin thickness, the flatness of the film layer can be ensured as much as possible, and the stress problem in the encapsulation layer 250 can be reduced. Of course, in other embodiments, the buffer layer 253 can also be made of a transparent colloid such as a transparent resin.

[0073] In summary, the display panel and electronic device provided in the embodiments of the present application, by providing a turning portion surrounding the opening area of ​​the pixel definition layer, the large-angle light emitted by the light-emitting device can reach the turning portion and change direction before emitting from the display panel, thereby improving the light extraction efficiency and light extraction effect of the display panel. In addition, by providing the turning portion, the propagation direction of the large-angle light emitted by the light-emitting device can be changed, thereby avoiding optical crosstalk between different pixels.

[0074] Furthermore, in some other embodiments of the present application, a mobile terminal device 900 is provided. Fig. 9 , Fig. 9It 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, and a light-emitting device and a pixel definition layer arranged on the substrate; 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 non-opening area is provided with a turning portion surrounding the opening area, and part of the light emitted by the light-emitting device can reach the turning portion and change direction before emitting from the display panel.

2. The display panel according to claim 1, characterized in that: The light emitted by the light emitting device includes a first light and a second light, and a direction perpendicular to the display surface of the display panel is defined as a light emitting direction of the display panel; a first angle is formed between the first light and the light emitting direction, and a second angle is formed between the second light and the light emitting direction; The first angle is smaller than the second angle, and the second light changes direction after being irradiated to the turning portion and is emitted from the display panel.

3. The display panel according to claim 2, characterized in that: The first angle is 15°-45°; the second angle is 45°-90°.

4. The display panel according to claim 2, characterized in that: A reflective film is provided on the surface of the turning portion, and the second light is irradiated on the reflective film to be reflected and changed in direction.

5. The display panel according to claim 4, characterized in that: The reflective film includes a first refractive layer and a second refractive layer which are stacked, and the first refractive layer and the second refractive layer cooperate to form a Bragg reflector.

6. The display panel according to claim 5, characterized in that: The material of the first refractive layer is one of zirconium dioxide, titanium dioxide, silicon oxide, silicon nitride and niobium pentoxide, and the material of the second refractive layer is another of zirconium dioxide, titanium dioxide, silicon oxide, silicon nitride and niobium pentoxide.

7. The display panel according to claim 2, characterized in that: The display panel also includes a filter arranged on the side of the light-emitting device away from the substrate, the filter having a filter portion arranged opposite to the light-emitting device and a shading portion arranged between adjacent filter portions; wherein the first light is emitted from the display panel through the filter portion, and the second light is irradiated to the turning portion and changed direction so as to be emitted from the display panel through the filter portion.

8. The display panel according to claim 7, characterized in that: The material of the shading portion is a ferrous metal material; and the thickness of the shading portion does not exceed 1 micrometer.

9. The display panel according to claim 1, characterized in that: The display panel further includes an encapsulation layer disposed on the light-emitting device, wherein 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 buffer layer has a thickness of 2-8 microns.

10. The display panel according to claim 9, characterized in that: The material of the buffer layer is photoresist.

11. The display panel according to claim 1, characterized in that: The turning portion and the opening edge of the opening area have a spacing, and the spacing is 1-6 microns.

12. The display panel according to claim 1, characterized in that: The turning portion has a width in the radial direction of the opening area, and the width is 3-6 micrometers.

13. The display panel according to claim 1, characterized in that: The cross-sectional area of ​​the turning portion gradually decreases in a direction away from the pixel definition layer; wherein the cross-sectional area of ​​the turning portion is a cross-sectional area of ​​the turning portion parallel to the surface of the pixel definition layer.

14. The display panel according to claim 13, characterized in that: The turning portion has a side surface inclined relative to the surface of the pixel definition layer, and the angle of inclination of the side surface relative to the surface of the pixel definition layer is 60°-90°.

15. 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 1-14.

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