WO2024255115A1 - 显示面板 - Google Patents

显示面板 Download PDF

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Publication number
WO2024255115A1
WO2024255115A1 PCT/CN2023/133917 CN2023133917W WO2024255115A1 WO 2024255115 A1 WO2024255115 A1 WO 2024255115A1 CN 2023133917 W CN2023133917 W CN 2023133917W WO 2024255115 A1 WO2024255115 A1 WO 2024255115A1
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WO
WIPO (PCT)
Prior art keywords
light
layer
transmitting layer
display panel
transmitting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/133917
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English (en)
French (fr)
Inventor
杭昊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Filing date
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Application filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Publication of WO2024255115A1 publication Critical patent/WO2024255115A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices
    • H10K59/878—Arrangements for extracting light from the devices comprising reflective means

Definitions

  • the present application relates to the field of display technology, and in particular to a display panel.
  • Organic light-emitting diode panels are widely used in smartphones. When using smartphones in public places, anti-peeping is an important user requirement.
  • the current mainstream anti-peeping function is achieved through anti-peeping films, which reduce the viewing angle by controlling the grating in the anti-peeping film.
  • this method will cause the screen brightness to dim and increase the power consumption of the screen.
  • An embodiment of the present application provides a display panel that can achieve an anti-peeping function.
  • An embodiment of the present application provides a display panel, comprising:
  • the light-emitting layer being disposed on the driving substrate, the light-emitting layer comprising a plurality of light-emitting pixels, and
  • an anti-peeping structure layer the anti-peeping structure layer being arranged on the light-emitting layer;
  • the anti-peeping structure layer comprising a first light-transmitting layer and a second light-transmitting layer, the first light-transmitting layer being arranged on a side of the light-emitting layer away from the driving substrate, and the second light-transmitting layer being arranged on a side of the first light-transmitting layer away from the driving substrate;
  • the first light-transmitting layer at least includes a component part, and the component part is arranged overlapping with the light-emitting pixel;
  • the component portion includes a first portion, the first portion and the second light-transmitting layer form a first total reflection interface, and the first total reflection interface is configured to reflect part of the light to the backlight side of the display panel.
  • FIG1 is a schematic diagram of the structure of a display panel provided in Embodiment 1 of the present application.
  • FIG2 is a light path diagram of a display panel provided in Embodiment 1 of the present application.
  • FIG3 is a schematic diagram of the structure of a display panel provided in Embodiment 2 of the present application.
  • FIG4 is a light path diagram of a display panel provided in Embodiment 2 of the present application.
  • FIG5 is a schematic diagram of the structure of a display panel provided in Embodiment 3 of the present application.
  • FIG. 6 is a light path diagram of the display panel provided in the third embodiment of the present application.
  • the directional words used such as “upper” and “lower”, generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the drawings; while “inside” and “outside” refer to the outline of the device; the terms “first”, “second”, “third”, etc. are used only as markings, and no numerical requirements are imposed or order is established.
  • An embodiment of the present application provides a display panel, comprising:
  • the light-emitting layer being disposed on the driving substrate, the light-emitting layer comprising a plurality of light-emitting pixels, and
  • an anti-peeping structure layer the anti-peeping structure layer being arranged on the light-emitting layer;
  • the anti-peeping structure layer comprising a first light-transmitting layer and a second light-transmitting layer, the first light-transmitting layer being arranged on a side of the light-emitting layer away from the driving substrate, and the second light-transmitting layer being arranged on a side of the first light-transmitting layer away from the driving substrate;
  • the first light-transmitting layer at least includes a component part, and the component part is arranged overlapping with the light-emitting pixel;
  • the component portion includes a first portion, the first portion and the second light-transmitting layer form a first total reflection interface, and the first total reflection interface is configured to reflect part of the light to the backlight side of the display panel.
  • the anti-peep structure layer further includes a third light-transmitting layer, the third light-transmitting layer is arranged on a side of the first light-transmitting layer close to the light-emitting layer, and the third light-transmitting layer is provided with an opening corresponding to the light-emitting pixel;
  • the component part also includes a second part arranged on a side of the first part away from the drive substrate, the second part is arranged in the opening and forms a second total reflection interface with the side wall of the opening, and the second total reflection interface is configured to reduce the emission angle of part of the light.
  • the refractive index of the second light-transmitting layer is smaller than the refractive index of the component part, and the refractive index of the third light-transmitting layer is smaller than the refractive index of the component part.
  • the width of the first part of the component portion decreases, and the width of the second part of the component portion increases.
  • the bottom surface of the second portion is arranged opposite to the top surface of the first portion, and the top surface of the first portion is located on a side of the bottom surface of the second portion away from the drive substrate;
  • the side surface of the first part and the plane where the top surface of the first part is located have a first angle
  • the side surface of the second part and the plane where the bottom surface of the second part is located have a second angle
  • the first angle is greater than or equal to 50 degrees and less than or equal to 75 degrees
  • the second angle is greater than or equal to 50 degrees and less than or equal to 75 degrees.
  • the thickness of the third light-transmitting layer is between 1.5 and 2.5 microns, and the thickness of the component part is between 3 and 4 microns.
  • the first angle is equal to the second angle.
  • the side surface of the first part is connected to the side surface of the second part.
  • the first light-transmitting layer further includes an intermediate layer, the intermediate layer is connected to the component portion, and the intermediate layer is arranged on a side of the third light-transmitting layer away from the driving substrate.
  • the refractive index of the first light-transmitting layer is greater than or equal to 1.7
  • the refractive index of the second light-transmitting layer is less than or equal to 1.5
  • the refractive index of the third light-transmitting layer is less than or equal to 1.5.
  • the display panel further includes an encapsulation layer, and the encapsulation layer is disposed between the light-emitting layer and the anti-peeping structure layer;
  • the encapsulation layer includes a first inorganic layer, an organic encapsulation layer, and a second inorganic layer stacked in sequence, or the encapsulation layer is an inorganic encapsulation layer.
  • This embodiment also provides a display panel, including:
  • the light-emitting layer being disposed on the driving substrate, the light-emitting layer comprising a plurality of light-emitting pixels, and
  • an anti-peeping structure layer the anti-peeping structure layer being arranged on the light-emitting layer;
  • the anti-peeping structure layer comprising a first light-transmitting layer and a second light-transmitting layer, the first light-transmitting layer being arranged on a side of the light-emitting layer away from the driving substrate, and the second light-transmitting layer being arranged on a side of the first light-transmitting layer away from the driving substrate;
  • the first light-transmitting layer at least includes a component part, and the component part is arranged overlapping with the light-emitting pixel;
  • the component portion includes a first portion, the first portion and the second light-transmitting layer form a first total reflection interface, and the first total reflection interface is configured to reflect part of the light to the backlight side of the display panel;
  • the anti-peep structure layer further includes a third light-transmitting layer, the third light-transmitting layer is arranged on a side of the first light-transmitting layer close to the light-emitting layer, and the third light-transmitting layer is provided with an opening corresponding to the light-emitting pixel;
  • the component part further includes a second part arranged on a side of the first part away from the drive substrate, the second part is arranged in the opening and forms a second total reflection interface with the side wall of the opening, and the second total reflection interface is arranged to reduce the emission angle of part of the light;
  • the display panel further includes an encapsulation layer, which is disposed between the light-emitting layer and the anti-peeping structure layer; the encapsulation layer includes a first inorganic layer, an organic encapsulation layer, and a second inorganic layer which are sequentially stacked.
  • the refractive index of the second light-transmitting layer is smaller than the refractive index of the component part, and the refractive index of the third light-transmitting layer is smaller than the refractive index of the component part.
  • the width of the first part of the component portion decreases, and the width of the second part of the component portion increases.
  • the bottom surface of the second portion is arranged opposite to the top surface of the first portion, and the top surface of the first portion is located on a side of the bottom surface of the second portion away from the drive substrate;
  • the side surface of the first part and the plane where the top surface of the first part is located have a first angle
  • the side surface of the second part and the plane where the bottom surface of the second part is located have a second angle
  • the first angle is greater than or equal to 50 degrees and less than or equal to 75 degrees
  • the second angle is greater than or equal to 50 degrees and less than or equal to 75 degrees.
  • the thickness of the third light-transmitting layer is between 1.5 and 2.5 microns, and the thickness of the component part is between 3 and 4 microns.
  • the first angle is equal to the second angle.
  • the side surface of the first part is connected to the side surface of the second part.
  • the first light-transmitting layer further includes an intermediate layer, the intermediate layer is connected to the component portion, and the intermediate layer is arranged on a side of the third light-transmitting layer away from the driving substrate.
  • the refractive index of the first light-transmitting layer is greater than or equal to 1.7
  • the refractive index of the second light-transmitting layer is less than or equal to 1.5
  • the refractive index of the third light-transmitting layer is less than or equal to 1.5.
  • the display panel of the embodiment of the present application is provided with a component part and a second light-transmitting layer on the light-emitting side of the light-emitting pixel, and the component part and the second light-transmitting layer are in contact to form a first total reflection interface, and then when the light at a large angle is radiated to the first total reflection interface, it is reflected by the first total reflection interface to the backlight side, thereby reducing the emission of light at a large angle, thereby realizing the anti-peeping function.
  • an embodiment of the present application provides a display panel 100, which includes a driving substrate 10, a light-emitting layer 20, and an anti-peeping structure layer 30.
  • the light-emitting layer 20 is disposed on the driving substrate 10.
  • the light-emitting layer 20 includes a plurality of light-emitting pixels 21.
  • the anti-peeping structure layer 30 is disposed on the light-emitting layer 20.
  • the anti-peeping structure layer 30 includes a first light-transmitting layer 31 and a second light-transmitting layer 32, wherein the first light-transmitting layer 31 is disposed on a side of the light-emitting layer 20 away from the driving substrate 10.
  • the second light-transmitting layer 32 is disposed on a side of the first light-transmitting layer 31 away from the driving substrate 10.
  • the first light-transmitting layer 31 includes at least a component portion 311, and the component portion 311 is disposed overlapping with the light-emitting pixel 21.
  • the component portion 311 includes a first portion 31a, and the first portion 31a and the second light-transmitting layer 32 form a first total reflection interface f1, and the first total reflection interface f1 is configured to reflect part of the light to the backlight side of the display panel 100.
  • a component portion 311 and a second light-transmitting layer 32 are arranged on the light-emitting side of the light-emitting pixel 21, and the component portion 311 and the second light-transmitting layer 32 are in contact to form a first total reflection interface f1, so that when light with a large angle is radiated to the first total reflection interface f1, it is reflected by the first total reflection interface f1 to the backlight side, thereby reducing the emission of light with a large angle, thereby realizing an anti-peeping function.
  • the driving substrate 10 includes a substrate and a driving circuit layer disposed on the substrate.
  • the driving circuit layer includes a thin film transistor and a capacitor, etc.
  • the substrate may be a flexible substrate or a hard substrate.
  • the light-emitting layer 20 can be a single-layer organic emission layer or a single-layer inorganic emission layer, such as Alq3, bis(2-methyl-8-hydroxyquinoline-N1,O8)-(1,1'-biphenyl-4-hydroxy)aluminum (BAlq), DPVBi, Almq3, 3-tert-butyl-9,10-di(2-naphthalene)anthracene (TBADN) or quantum dots, etc.
  • BAlq bis(2-methyl-8-hydroxyquinoline-N1,O8)-(1,1'-biphenyl-4-hydroxy)aluminum
  • DPVBi bis(2-methyl-8-hydroxyquinoline-N1,O8)-(1,1'-biphenyl-4-hydroxy)aluminum
  • DPVBi bis(2-methyl-8-hydroxyquinoline-N1,O8)-(1,1'-biphenyl-4-hydroxy)aluminum
  • DPVBi bis(2-methyl-8-hydroxyquinoline-N1,O
  • the light emitting layer 20 may also be a stacked structure including a hole injection layer, a hole transport layer, an emission layer, an electron transport layer, and an electron injection layer.
  • an anode is disposed on one side of the light-emitting layer 20
  • a cathode is disposed on the other side of the light-emitting layer 20 to enable the light-emitting layer 20 to emit light.
  • light-emitting pixels 21 there are multiple types of light-emitting pixels 21, such as red light-emitting pixels 21, green light-emitting pixels 21 and blue light-emitting pixels 21.
  • One light-emitting pixel 21 is correspondingly provided with one first total reflection interface f1.
  • the pattern of the luminous pixel 21 is completely located within the pattern of the component part 311. That is, the component part 311 completely covers the luminous pixel 21, so that the light emitted by the luminous pixel 21 is radiated to the first total reflection interface f1 as much as possible, thereby improving the anti-peeping effect.
  • the width of the top surface of the first portion 31 a of the component portion 311 is greater than or equal to the width of the light-emitting pixel 21 to improve light extraction efficiency.
  • the refractive index of the second light-transmitting layer 32 is smaller than the refractive index of the component portion 311 , so that the connection interface between the component portion 311 and the second light-transmitting layer 32 forms a total reflection interface.
  • the refractive index of the first light-transmitting layer 31 is greater than or equal to 1.7, and the refractive index of the second light-transmitting layer 32 is less than or equal to 1.5.
  • the refractive index of the first light-transmitting layer 31 may be 1.7, 1.8 or 1.9, and the refractive index of the second light-transmitting layer 32 may be 1.5, 1.4, 1.3, 1.2 or 1.1, etc.
  • the refractive index of the first light-transmitting layer 31 may be less than 1.7, and the refractive index of the second light-transmitting layer 32 may be greater than 1.5, as long as the component portion 311 of the first light-transmitting layer 31 contacts the second light-transmitting layer 32 to form a total reflection interface.
  • the material of the first light-transmitting layer 31 may include organic resin, such as acrylate resin, etc.
  • the material of the second light-transmitting layer 32 may include acrylic or epoxy organic resin.
  • the first light-transmitting layer 31 and the second light-transmitting layer 32 may also be formed of inorganic materials.
  • the width of the first portion 31 a of the component portion 311 decreases gradually in a direction from the driving substrate 10 to the anti-peeping structure layer 30 .
  • the first part 31a of the component part 311 is a structure that is narrow at the top and wide at the bottom, for example, the pattern of its vertical section is a trapezoid or a quasi-trapezoidal shape.
  • the light is reflected by the side to the top surface of the first part 31a, and then reflected back to the backlight side by the top surface of the first part 31a.
  • a side surface of the first portion 31 a and a plane where a top surface of the first portion 31 a is located have a first angle a1, and the first angle a1 is greater than or equal to 50 degrees and less than or equal to 75 degrees.
  • the first angle a1 when the first angle a1 is smaller, the amount of light radiated to the side is more, the more light is reflected, and the better the anti-peeping effect is; when the first angle a1 is larger, the amount of light radiated to the side is smaller, the reflected light is smaller, the anti-peeping effect is worse but the light output effect is better.
  • the first angle a1 by setting the first angle a1 to be greater than or equal to 50 degrees and less than or equal to 75 degrees, the anti-peeping effect is ensured and the risk of too dark light brightness is avoided.
  • the first angle a1 may be 50 degrees, 55 degrees, 60 degrees, 65 degrees, 70 degrees or 75 degrees.
  • the thickness of the component part 311 is between 0.5 and 2.5 microns. It is understandable that when the thickness of the component part 311 is greater, more light is radiated to the side, more light is reflected, and the anti-peeping effect is better; when the thickness of the component part 311 is smaller, the amount of light radiated to the side is smaller, the reflected light is smaller, the anti-peeping effect is worse but the light output effect is better.
  • the thickness of the component portion 311 is set to be between 0.5 and 2.5 microns, thereby ensuring the anti-peeping effect and avoiding the risk of too dark light brightness.
  • the thickness of the component portion 311 may be 0.5 micrometers, 0.6 micrometers, 0.7 micrometers, 0.8 micrometers, 0.9 micrometers, 1 micrometer, 1.2 micrometers, 1.4 micrometers, 1.6 micrometers, 1.8 micrometers, 2 micrometers, 2.3 micrometers or 2.5 micrometers.
  • the first angle a1 is set to be greater than or equal to 50 degrees and less than or equal to 75 degrees, and the thickness of the component portion 311 is set to be between 0.5 and 2.5 microns, so as to reduce the risk of dim light output from the display panel 100 while achieving the anti-peeping function.
  • the thickness of the second light-transmitting layer 32 is between 4 and 15 microns, such as 4 microns, 5 microns, 6 microns, 7 microns, 8 microns, 9 microns, 10 microns or 15 microns, etc.
  • the second light-transmitting layer 32 has a greater thickness to flatten the convex topography of the component portion 311 .
  • the display panel 100 further includes an encapsulation layer 40 , which is disposed between the light emitting layer 20 and the anti-peeping structure layer 30 .
  • the encapsulation layer 40 includes a first inorganic layer, an organic encapsulation layer, and a second inorganic layer which are sequentially stacked.
  • the encapsulation layer 40 is an inorganic encapsulation layer, that is, the encapsulation layer 40 is a single inorganic layer, and the anti-peeping structure layer 30 also serves as an encapsulation layer, thereby achieving the effect of thinning the display panel 100 .
  • the display panel 100 may further include a touch layer 50, which is disposed between the encapsulation layer 40 and the anti-peeping structure layer 30.
  • the touch layer 50 is disposed on a side of the anti-peeping structure layer 30 close to the light-emitting layer 20, so that the touch layer 50 is closer to the light-emitting layer 20, thereby reducing the risk of more light being blocked by the touch layer 50 and reducing the risk of low light brightness.
  • the display panel 100 may further include an optical function layer 60, which is disposed on a side of the anti-peeping structure layer 30 away from the substrate 10.
  • the optical function layer 60 may include a polarizing layer, an optical adhesive layer, and a cover plate sequentially stacked on the anti-peeping structure layer 30.
  • the second embodiment is different from the first embodiment in that the anti-peep structure layer 30 further includes a third light-transmitting layer 33, and the third light-transmitting layer 33 is disposed on a side of the first light-transmitting layer 31 close to the light-emitting layer 20.
  • the third light-transmitting layer 33 is provided with an opening 331 corresponding to the light-emitting pixel 21.
  • the member 311 further includes a second portion 31b disposed on a side of the first portion 31a away from the drive substrate 10.
  • the second portion 31b is disposed in the opening 331 and forms a second total reflection interface f2 with the side wall of the opening 331.
  • the second total reflection interface f2 is configured to reduce the emission angle of part of the light.
  • the light emitted by the light-emitting pixel 21 radiates to the second total reflection interface f2, it is reflected by the second total reflection interface f2, which reduces the emission angle, further improves the anti-peeping effect, and achieves a focusing effect to increase the light output brightness of the display panel 100.
  • the refractive index of the third light-transmitting layer 33 is smaller than the refractive index of the component portion 311 , so that the connection interface between the component portion 311 and the third light-transmitting layer 33 forms a total reflection interface.
  • the refractive index of the third light-transmitting layer 33 is greater than or equal to 1.7.
  • the refractive index of the third light-transmitting layer 33 is less than or equal to 1.5.
  • the refractive index of the first light-transmitting layer 31 may be 1.7, 1.8 or 1.9, and the refractive index of the third light-transmitting layer 33 may be 1.5, 1.4, 1.3, 1.2 or 1.1.
  • the refractive index of the first light-transmitting layer 31 may be less than 1.7, and the refractive index of the third light-transmitting layer 33 may be greater than 1.5, as long as the component portion 311 of the first light-transmitting layer 31 contacts the third light-transmitting layer 33 to form a total reflection interface.
  • the first part 31 a and the second part 31 b are integrally formed with the same material to improve manufacturing efficiency and avoid the risk of light path change in the component part 311 .
  • the top width of the first portion 31 a is greater than the bottom width of the second portion 31 b
  • the bottom width of the second portion 31 b is greater than or equal to the width of the light-emitting pixel 21 , so as to improve the light brightness.
  • the pattern of the component portion 311 is coaxially arranged with the pattern of the light-emitting pixel 21 .
  • the width of the first portion 31 a of the component portion 311 decreases gradually, and the width of the second portion 31 b of the component portion 311 increases gradually.
  • the first part 31a of the component part 311 is a structure that is narrow at the top and wide at the bottom, for example, the pattern of its vertical section is a trapezoid or a quasi-trapezoidal shape.
  • the light is reflected by the side to the top surface of the first part 31a, and then reflected back to the backlight side by the top surface of the first part 31a.
  • the second part 31b of the component part 311 is a structure that is wide at the top and narrow at the bottom, for example, its vertical cross-section pattern is in an inverted trapezoidal shape or a quasi-inverted trapezoidal shape.
  • the second part 31b is located on the side close to the light emitting layer 20, so that the light with a large angle is reflected by the second total reflection interface f2 as light with a smaller angle and emitted, that is, the anti-peeping effect is achieved and the light output brightness is improved; and the first part 31a is located on the side away from the light emitting layer 20 so that the light with a larger angle is blocked by the first total reflection interface f1, further improving the anti-peeping viewing angle range. Therefore, compared with the grating anti-peeping film, this embodiment has better light output brightness and greater adjustability of the anti-peeping angle.
  • the bottom surface of the second portion 31 b is disposed opposite to the top surface of the first portion 31 a .
  • the top surface of the first portion 31 a is located on a side of the bottom surface of the second portion 32 b away from the drive substrate 10 .
  • the side surface of the first portion 31a and the plane where the top surface of the first portion 31a is located have a first angle a1.
  • the side surface of the second portion 31b and the plane where the bottom surface of the second portion 31b is located have a second angle a2.
  • the first angle a1 is greater than or equal to 50 degrees and less than or equal to 75 degrees.
  • the second angle a2 is greater than or equal to 50 degrees and less than or equal to 75 degrees.
  • the second angle a2 when the second angle a2 is smaller, the amount of light radiated to the side is less, the less light is reflected, and the worse the anti-peeping effect is; when the second angle a2 is larger, the amount of light radiated to the side is more, the more light is reflected, the better the anti-peeping effect and the better the light output effect.
  • the second angle a2 by setting the second angle a2 to be greater than or equal to 50 degrees and less than or equal to 75 degrees, the anti-peeping effect is ensured and the risk of too dark light brightness is avoided.
  • the second angle a2 may be 50 degrees, 55 degrees, 60 degrees, 65 degrees, 70 degrees or 75 degrees.
  • the first angle a1 is set to be greater than or equal to 50 degrees and less than or equal to 75 degrees
  • the second angle a2 is set to be greater than or equal to 50 degrees and less than or equal to 75 degrees, so that the light output effect is improved when the anti-peeping viewing angle is appropriate.
  • the second angle a2 is greater than the first angle a1 to improve the light output effect.
  • the first angle a1 is equal to the second angle a2.
  • the thickness of the third light-transmitting layer 33 is between 1.5 and 2.5 micrometers.
  • the thickness of the component portion 311 is between 3 and 4 micrometers.
  • the thickness of the second portion 31b is equal to the thickness of the third light-transmitting layer 33.
  • the thickness of the third light-transmitting layer 33 is between 1.5 and 2.5 microns. It can be understood that when the thickness of the third light-transmitting layer 33 is greater, the amount of light radiated to the side of the second portion 31b is greater, the more light is reflected, the better the anti-peeping effect and the better the light-emitting effect; when the thickness of the third light-transmitting layer 33 is smaller, the amount of light radiated to the side is smaller, the reflected light is smaller, the anti-peeping effect and the worse the light-emitting effect are.
  • the thickness of the component part 311 is set between 3 and 4 microns, thereby ensuring the anti-peeping effect and avoiding the risk of too dark light brightness.
  • the thickness of the component portion 311 may be 3 micrometers, 3.1 micrometers, 3.2 micrometers, 3.3 micrometers, 3.4 micrometers, 3.5 micrometers, 3.6 micrometers, 3.7 micrometers, 3.8 micrometers, 3.9 micrometers or 4 micrometers.
  • the thickness of the third light-transmitting layer 33 may be 1.5 micrometers, 1.6 micrometers, 1.7 micrometers, 1.8 micrometers, 1.9 micrometers, 2 micrometers, 2.1 micrometers, 2.2 micrometers, 2.3 micrometers, 2.4 micrometers or 2.5 micrometers.
  • the second angle a2 is set to be greater than or equal to 50 degrees and less than or equal to 75 degrees, and the thickness of the component part 311 is between 3 and 4 microns, so as to reduce the risk of dim light output from the display panel 100 while achieving the anti-peeping function.
  • the thickness of the first portion 31 a is smaller than the thickness of the second portion 31 b , so as to improve the light extraction efficiency under the same anti-peeping viewing angle.
  • the side surface of the first portion 31a is connected to the side surface of the second portion 31b.
  • the side surface of the first portion 31a is connected to the side surface of the second portion 31b to improve the anti-peeping effect.
  • the third embodiment is different from any of the above embodiments in that the first light-transmitting layer 31 further includes an intermediate layer 312 .
  • the intermediate layer 312 is connected to the component portion 311 and is disposed on a side of the third light-transmitting layer 33 away from the driving substrate 10 .
  • the intermediate layer 312 is connected to the component part 311, and the two are integrally formed and made of the same material, part of the light can be emitted through the connection between the intermediate layer 312 and the component part 311, thereby improving the brightness of the light.
  • the intermediate layer 312 is attached between the second light-transmitting layer 32 and the third light-transmitting layer 33, the stability of the attachment of the second light-transmitting layer 32 and the third light-transmitting layer 33 is improved, and the risk of separation of the inner film layer of the anti-peeping structure layer 30 is reduced.
  • the thickness of the middle layer 312 is less than or equal to 3 micrometers, for example, it may be 3 micrometers, 2.5 micrometers, 2 micrometers, 1.5 micrometers, 1 micrometer or 0.5 micrometer.
  • the thickness of the intermediate layer 312 is less than or equal to 3 microns to ensure a balance between the anti-peeping effect and the light output brightness.
  • the refractive index of the intermediate layer 312 is greater than the refractive index of the second light-transmitting layer 32 and the refractive index of the third light-transmitting layer 33, so that the intermediate layer 312 forms a total reflection interface with the second light-transmitting layer 32 and the third light-transmitting layer 33, respectively, thereby causing the intermediate layer 312 to form an optical waveguide layer.
  • the light When light at a large angle is radiated into the intermediate layer 312, the light will be transmitted and advanced in the intermediate layer 312 until it is radiated to the component part 311, wherein part of the light is radiated to the backlight side through the component part 311, thereby improving the anti-peeping effect; part of the light is emitted after the component part 311 reduces the exit angle, thereby improving the light extraction efficiency.

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Abstract

本申请实施例公开了一种显示面板，防窥结构层设置在发光层上。防窥结构层包括第一透光层和第二透光层，第一透光层至少包括构件部，构件部与发光像素重叠设置。构件部包括第一部分，第一部分与第二透光层形成第一全反射界面，第一全反射界面设置为反射部分光线至显示面板的背光侧。

Description

显示面板 技术领域
本申请涉及显示技术领域，具体涉及一种显示面板。
 背景技术
有机发光二极管面板广泛应用在智能手机中，在公共场所使用智能手机时，防偷窥是一个重要的用户需求。目前的主流防偷窥功能是通过防窥膜实现的，通过防窥膜中的光栅控制实现可视角度的缩小，但这种方法会造成屏幕亮度变暗，提升屏幕的使用功耗。
 发明概述
本申请实施例提供一种显示面板，可以实现防窥功能。
本申请实施例提供一种显示面板，其包括：
驱动基板；
发光层，所述发光层设置在所述驱动基板上，所述发光层包括多个发光像素，以及
防窥结构层，所述防窥结构层设置在所述发光层上；所述防窥结构层包括第一透光层和第二透光层，所述第一透光层设置在所述发光层远离所述驱动基板的一侧，所述第二透光层设置在所述第一透光层远离所述驱动基板的一侧；
所述第一透光层至少包括构件部，所述构件部与所述发光像素重叠设置；
所述构件部包括第一部分，所述第一部分与所述第二透光层形成第一全反射界面，所述第一全反射界面设置为反射部分光线至所述显示面板的背光侧。
 附图说明
图1是本申请实施例一提供的显示面板的结构示意图；
图2是本申请实施例一提供的显示面板的光线路径图；
图3是本申请实施例二提供的显示面板的结构示意图；
图4是本申请实施例二提供的显示面板的光线路径图；
图5是本申请实施例三提供的显示面板的结构示意图；
图6是本申请实施例三提供的显示面板的光线路径图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。此外，应当理解的是，此处所描述的具体实施方式仅用于说明和解释本申请，并不用于限制本申请。在本申请中，在未作相反说明的情况下，使用的方位词如“上”和“下”通常是指装置实际使用或工作状态下的上和下，具体为附图中的图面方向；而“内”和“外”则是针对装置的轮廓而言的；用语“第一”、“第二”、“第三”等仅仅作为标示使用，并没有强加数字要求或建立顺序。
本申请实施例提供一种显示面板，下文进行详细说明。需说明的是，以下实施例的描述顺序不作为对实施例优选顺序的限定。
本申请实施例提供一种显示面板，其包括：
驱动基板；
发光层，所述发光层设置在所述驱动基板上，所述发光层包括多个发光像素，以及
防窥结构层，所述防窥结构层设置在所述发光层上；所述防窥结构层包括第一透光层和第二透光层，所述第一透光层设置在所述发光层远离所述驱动基板的一侧，所述第二透光层设置在所述第一透光层远离所述驱动基板的一侧；
所述第一透光层至少包括构件部，所述构件部与所述发光像素重叠设置；
所述构件部包括第一部分，所述第一部分与所述第二透光层形成第一全反射界面，所述第一全反射界面设置为反射部分光线至所述显示面板的背光侧。
可选的，在本申请的一些实施例中，所述防窥结构层还包括第三透光层，所述第三透光层设置在所述第一透光层靠近所述发光层的一侧，所述第三透光层上设置有对应于所述发光像素的开口；
所述构件部还包括设置在所述第一部分远离所述驱动基板一侧的第二部分，所述第二部分设置在所述开口内且与所述开口的侧壁形成第二全反射界面，所述第二全反射界面设置为缩小部分光线的出射角度。
可选的，在本申请的一些实施例中，所述第二透光层的折射率小于所述构件部的折射率，所述第三透光层的折射率小于所述构件部的折射率。
可选的，在本申请的一些实施例中，自所述驱动基板向所述防窥结构层的方向上，所述构件部的第一部分的宽度递减，所述构件部的第二部分的宽度递增。
可选的，在本申请的一些实施例中，在所述构件部中，所述第二部分的底面与所述第一部分的顶面相对设置，所述第一部分的顶面位于所述第二部分的底面远离所述驱动基板的一侧；
所述第一部分的侧面与所述第一部分的顶面所在的平面具有第一夹角，所述第二部分的侧面与所述第二部分的底面所在的平面具有第二夹角，所述第一夹角大于或等于50度且小于或等于75度，所述第二夹角大于或等于50度且小于或等于75度。
可选的，在本申请的一些实施例中，所述第三透光层的厚度介于1.5~2.5微米之间，所述构件部的厚度介于3~4微米之间。
可选的，在本申请的一些实施例中，所述第一夹角等于所述第二夹角。
可选的，在本申请的一些实施例中，所述第一部分的侧面与所述第二部分的侧面相连。
可选的，在本申请的一些实施例中，所述第一透光层还包括中间层，所述中间层连接于所述构件部，所述中间层设置在所述第三透光层远离所述驱动基板的一侧。
可选的，在本申请的一些实施例中，所述第一透光层的折射率大于或等于1.7，所述第二透光层的折射率小于或等于1.5，所述第三透光层的折射率小于或等于1.5。
可选的，在本申请的一些实施例中，所述显示面板还包括封装层，所述封装层设置在所述发光层和所述防窥结构层之间；
所述封装层包括依次层叠设置的第一无机层、有机封装层和第二无机层，或，所述封装层为无机封装层。
本实施例还提供一种显示面板，包括：
驱动基板；
发光层，所述发光层设置在所述驱动基板上，所述发光层包括多个发光像素，以及
防窥结构层，所述防窥结构层设置在所述发光层上；所述防窥结构层包括第一透光层和第二透光层，所述第一透光层设置在所述发光层远离所述驱动基板的一侧，所述第二透光层设置在所述第一透光层远离所述驱动基板的一侧；
所述第一透光层至少包括构件部，所述构件部与所述发光像素重叠设置；
所述构件部包括第一部分，所述第一部分与所述第二透光层形成第一全反射界面，所述第一全反射界面设置为反射部分光线至所述显示面板的背光侧；
所述防窥结构层还包括第三透光层，所述第三透光层设置在所述第一透光层靠近所述发光层的一侧，所述第三透光层上设置有对应于所述发光像素的开口；
所述构件部还包括设置在所述第一部分远离所述驱动基板一侧的第二部分，所述第二部分设置在所述开口内且与所述开口的侧壁形成第二全反射界面，所述第二全反射界面设置为缩小部分光线的出射角度；
所述显示面板还包括封装层，所述封装层设置在所述发光层和所述防窥结构层之间；所述封装层包括依次层叠设置的第一无机层、有机封装层和第二无机层。
可选的，在本申请的一些实施例中，所述第二透光层的折射率小于所述构件部的折射率，所述第三透光层的折射率小于所述构件部的折射率。
可选的，在本申请的一些实施例中，自所述驱动基板向所述防窥结构层的方向上，所述构件部的第一部分的宽度递减，所述构件部的第二部分的宽度递增。
可选的，在本申请的一些实施例中，在所述构件部中，所述第二部分的底面与所述第一部分的顶面相对设置，所述第一部分的顶面位于所述第二部分的底面远离所述驱动基板的一侧；
所述第一部分的侧面与所述第一部分的顶面所在的平面具有第一夹角，所述第二部分的侧面与所述第二部分的底面所在的平面具有第二夹角，所述第一夹角大于或等于50度且小于或等于75度，所述第二夹角大于或等于50度且小于或等于75度。
可选的，在本申请的一些实施例中，所述第三透光层的厚度介于1.5~2.5微米之间，所述构件部的厚度介于3~4微米之间。
可选的，在本申请的一些实施例中，所述第一夹角等于所述第二夹角。
可选的，在本申请的一些实施例中，所述第一部分的侧面与所述第二部分的侧面相连。
可选的，在本申请的一些实施例中，所述第一透光层还包括中间层，所述中间层连接于所述构件部，所述中间层设置在所述第三透光层远离所述驱动基板的一侧。
可选的，在本申请的一些实施例中，所述第一透光层的折射率大于或等于1.7，所述第二透光层的折射率小于或等于1.5，所述第三透光层的折射率小于或等于1.5。
本申请实施例的显示面板在发光像素的出光侧设置构件部和第二透光层，且构件部和第二透光层接触形成第一全反射界面，进而当大角度的光线辐射至第一全反射界面时被第一全反射界面反射至背光侧，减少了大角度光线的射出，从而实现防窥功能。
实施例一、
请参照图1和图2，本申请实施例提供一种显示面板100，其包括驱动基板10、发光层20和防窥结构层30。发光层20设置在驱动基板10上。发光层20包括多个发光像素21。防窥结构层30设置在发光层20上。防窥结构层30包括第一透光层31和第二透光层32，第一透光层31设置在发光层20远离驱动基板10的一侧。第二透光层32设置在第一透光层31远离驱动基板10的一侧。第一透光层31至少包括构件部311，构件部311与发光像素21重叠设置。构件部311包括第一部分31a，第一部分31a与第二透光层32形成第一全反射界面f1，第一全反射界面f1设置为反射部分光线至显示面板100的背光侧。
本申请实施例在发光像素21的出光侧设置构件部311和第二透光层32，且构件部311和第二透光层32接触形成第一全反射界面f1，进而当大角度的光线辐射至第一全反射界面f1时被第一全反射界面f1反射至背光侧，减少了大角度光线的射出，从而实现防窥功能。
可选的，驱动基板10包括衬底和设置在衬底上的驱动电路层。驱动电路层包括薄膜晶体管和电容等。其中，衬底可以是柔性衬底或硬质衬底。
可选的，发光层20可以是单层有机发射层或单层无机发射层，比如可以是Alq3、双(2-甲基-8-羟基喹啉-N1,O8)-(1,1'-联苯-4-羟基)铝（BAlq）、DPVBi、Almq3、3-叔丁基-9,10-二(2-萘)蒽（TBADN）或量子点等。
另外，发光层20也可以是包括空穴注入层、空穴传输层、发射层、电子传输层和电子注入层的叠层结构。
需要说明的是，发光层20的一侧还设置有阳极，发光层20的另一侧设置有阴极以促使发光层20发光。
可选的，发光像素21具有多种，比如可以是发红光的发光像素21、发绿光的发光像素21和发蓝光的发光像素21。一个发光像素21对应设置一个第一全反射界面f1。
可选的，在显示面板100的正投影方向上，发光像素21的图案完全位于构件部311的图案内。也即构件部311完全覆盖发光像素21，以使得发光像素21发出的光线尽可能的辐射到第一全反射界面f1，提高防窥效果。
可选的，构件部311的第一部分31a的顶面的宽度大于或等于发光像素21的宽度，以提高出光效率。
可选的，第二透光层32的折射率小于构件部311的折射率，以使得构件部311和第二透光层32的连接界面形成全反射界面。
可选的，第一透光层31的折射率大于或等于1.7。第二透光层32的折射率小于或等于1.5。比如第一透光层31的折射率可以是1.7、1.8或1.9等，第二透光层32的折射率可以是1.5、1.4、1.3、1.2或1.1等。
在一些实施例中，第一透光层31的折射率也可以小于1.7，第二透光层32的折射率也可以大于1.5，只要第一透光层31的构件部311与第二透光层32接触形成全反射界面即可。
可选的，第一透光层31的材料可以包括有机树脂，比如丙烯酸酯类树脂等。第二透光层32的材料可以包括亚克力系或环氧系有机树脂。当然，第一透光层31和第二透光层32也可以是由无机材料形成。
可选的，自驱动基板10向防窥结构层30的方向上，构件部311的第一部分31a的宽度递减。
也就是说，构件部311的第一部分31a为上窄下宽结构，比如其垂直剖面的图案呈梯形状或类梯形状。当大角度的光线辐射到第一部分31a的侧面时，光线被侧面反射至第一部分31a的顶面，随后又被第一部分31a的顶面反射回背光侧。当需要进一步提高防窥效果时，可以配置大角度的光线辐射至第一部分31a的顶面，被顶面直接反射回背光侧。
可选的，第一部分31a的侧面与第一部分31a的顶面所在的平面具有第一夹角a1，第一夹角a1大于或等于50度且小于或等于75度。
可以理解的是，当第一夹角a1越小时，光线辐射到侧面的量越多，被反射的光线越多，防窥效果越好；当第一夹角a1越大时，光线辐射到侧面的量越小，被反射的光线越小，防窥效果越差但出光效果越好。
本实施例通过设置第一夹角a1大于或等于50度且小于或等于75度，即保证了防窥效果，且避免出光亮度太暗的风险。
可选的，第一夹角a1可以是50度、55度、60度、65度、70度或75度。
可选的，构件部311的厚度介于0.5~2.5微米之间。可以理解的是，当构件部311的厚度越大时，光线辐射到侧面的量越多，被反射的光线越多，防窥效果越好；当构件部311的厚度越小时，光线辐射到侧面的量越小，被反射的光线越小，防窥效果越差但出光效果越好。
本实施例通过设置构件部311的厚度介于0.5~2.5微米之间，即保证了防窥效果，且避免出光亮度太暗的风险。
可选的，构件部311的厚度可以为0.5微米、0.6微米、0.7微米、0.8微米、0.9微米、1微米、1.2微米、1.4微米、1.6微米、1.8微米、2微米、2.3微米或2.5微米。
另外，本实施例同时设置第一夹角a1大于或等于50度且小于或等于75度，以及构件部311的厚度介于0.5~2.5微米之间，以达到防窥功能的前提下，降低显示面板100出光亮度较暗的风险。
可选的，第二透光层32的厚度介于4~15微米之间，比如可以是4微米、5微米、6微米、7微米、8微米、9微米、10微米或15微米等。第二透光层32的厚度较大是为了平坦构件部311的凸起地势。
可选的，显示面板100还包括封装层40，封装层40设置在发光层20和防窥结构层30之间。
封装层40包括依次层叠设置的第一无机层、有机封装层和第二无机层。
在一些实施例中，封装层40为无机封装层。也即封装层40为单层无机层，防窥结构层30同时作为封装层，达到薄化显示面板100的效果。
在本实施例中，显示面板100还可以包括触控层50，触控层50设置在封装层40和防窥结构层30之间。触控层50设置在防窥结构层30靠近发光层20的一侧，使得触控层50距离发光层20较近，降低了更多光线被触控层50遮挡的风险，降低出光亮度较低的风险。
在本实施例中，显示面板100还可以包括光学功能层60，光学功能层60设置在防窥结构层30远离基板10的一侧。可选的，光学功能层60可以包括依次层叠设置在防窥结构层30上的偏光层、光学胶层和盖板。
实施例二、
请参照图3和图4，相较于实施例一，本实施例二与实施例一的不同之处在于，防窥结构层30还包括第三透光层33，第三透光层33设置在第一透光层31靠近发光层20的一侧。第三透光层33上设置有对应于发光像素21的开口331。
构件部311还包括设置在第一部分31a远离驱动基板10一侧的第二部分31b。第二部分31b设置在开口331内且与开口331的侧壁形成第二全反射界面f2。第二全反射界面f2设置为缩小部分光线的出射角度。
当发光像素21发出的光线辐射至第二全反射界面f2时，被第二全反射界面f2反射，缩小了出射角度，进一步提高了防窥效果，且达到聚光的效果以提高显示面板100的出光亮度。
可选的，第三透光层33的折射率小于构件部311的折射率，以使得构件部311和第三透光层33的连接界面形成全反射界面。
可选的，第三透光层33的折射率大于或等于1.7。第三透光层33的折射率小于或等于1.5。比如第一透光层31的折射率可以是1.7、1.8或1.9等，第三透光层33的折射率可以是1.5、1.4、1.3、1.2或1.1等。
在一些实施例中，第一透光层31的折射率也可以小于1.7，第三透光层33的折射率也可以大于1.5，只要第一透光层31的构件部311与第三透光层33接触形成全反射界面即可。
可选的，第一部分31a和第二部分31b一体成型，二者的材料相同，以提高制备效率以及避免光线在构件部311内发生光路改变的风险。
可选的，第一部分31a的顶面宽度大于第二部分31b的底面宽度，第二部分31b的底面宽度大于或等于发光像素21的宽度，以提高出光亮度。
可选的，在剖面结构图中，构件部311的图案与发光像素21的图案同轴设置。
可选的，自驱动基板10向防窥结构层30的方向上，构件部311的第一部分31a的宽度递减，构件部311的第二部分31b的宽度递增。
也就是说，构件部311的第一部分31a为上窄下宽结构，比如其垂直剖面的图案呈梯形状或类梯形状。当大角度的光线辐射到第一部分31a的侧面时，光线被侧面反射至第一部分31a的顶面，随后又被第一部分31a的顶面反射回背光侧。当需要进一步提高防窥效果时，可以配置大角度的光线辐射至第一部分31a的顶面，被顶面直接反射回背光侧。
构件部311的第二部分31b为上宽下窄结构，比如其垂直剖面的图案呈倒梯形状或类倒梯形状。当大角度的光线辐射到第二部分31b的侧面时，光线被侧面反射，进而减小了出射角度，进一步提高防窥效果且提高了出光亮度。
本实施例采用第二部分31b位于靠近发光层20的一侧，使得大角度的光线被第二全反射界面f2反射为较小角度的光线并射出，即达到防窥效果且提高了出光亮度；且第一部分31a位于远离发光层20的一侧使得较大角度的光线被第一全反射界面f1阻挡，进一步提高防窥的视角范围。故相较于光栅式的防窥膜，本实施例具有更好的出光亮度且防窥角度具有更大的可调性。
可选的，在构件部311中，第二部分31b的底面与第一部分31a的顶面相对设置。第一部分31a的顶面位于第二部分32b的底面远离驱动基板10的一侧。
第一部分31a的侧面与第一部分31a的顶面所在的平面具有第一夹角a1。第二部分31b的侧面与第二部分31b的底面所在的平面具有第二夹角a2。第一夹角a1大于或等于50度且小于或等于75度。第二夹角a2大于或等于50度且小于或等于75度。
可以理解的是，当第二夹角a2越小时，光线辐射到侧面的量越少，被反射的光线越少，防窥效果越差；当第二夹角a2越大时，光线辐射到侧面的量越多，被反射的光线越多，防窥效果越好且出光效果越好。
本实施例通过设置第二夹角a2大于或等于50度且小于或等于75度，即保证了防窥效果，且避免出光亮度太暗的风险。
可选的，第二夹角a2可以是50度、55度、60度、65度、70度或75度。
本实施例通过设置第一夹角a1大于或等于50度且小于或等于75度，第二夹角a2大于或等于50度且小于或等于75度，使得防窥的视角合适的情况下，提高出光效果。
可选的，第二夹角a2大于第一夹角a1，以提高出光效果。
在一些实施例中，第一夹角a1等于第二夹角a2。
可选的，第三透光层33的厚度介于1.5~2.5微米之间。构件部311的厚度介于3~4微米之间。
可选的，第二部分31b的厚度等于第三透光层33的厚度。第三透光层33的厚度介于1.5~2.5微米之间。可以理解的是，当第三透光层33的厚度越大时，光线辐射到第二部分31b的侧面的量越多，被反射的光线越多，防窥效果越好且出光效果越好；当第三透光层33的厚度越小时，光线辐射到侧面的量越小，被反射的光线越小，防窥效果越差且出光效果越差。
本实施例通过设置构件部311的厚度介于3~4微米之间，即保证了防窥效果，且避免出光亮度太暗的风险。
可选的，构件部311的厚度可以为3微米、3.1微米、3.2微米、3.3微米、3.4微米、3.5微米、3.6微米、3.7微米、3.8微米、3.9微米或4微米。
第三透光层33的厚度可以为1.5微米、1.6微米、1.7微米、1.8微米、1.9微米、2微米、2.1微米、2.2微米、2.3微米、2.4微米或2.5微米。
另外，本实施例同时设置第二夹角a2大于或等于50度且小于或等于75度，以及构件部311的厚度介于3~4微米之间，以达到防窥功能的前提下，降低显示面板100出光亮度较暗的风险。
可选的，第一部分31a的厚度小于第二部分31b的厚度，以在防窥视角相同的情况下，提高出光效率。
可选的，第一部分31a的侧面与第二部分31b的侧面相连。本实施例通过第一部分31a的侧面与第二部分31b的侧面相连，提高防窥效果。
实施例三、
请参照图5和图6，本实施例三与上述任一实施例的不同在于，第一透光层31还包括中间层312。中间层312连接于构件部311，中间层312设置在第三透光层33远离驱动基板10的一侧。
其中，由于中间层312连接构件部311，且二者一体成型且材料相同，使得部分关系可以经过中间层312和构件部311的连接处射出，进而提高出光亮度。另外由于中间层312贴附在第二透光层32和第三透光层33之间，提高了第二透光层32和第三透光层33贴附的稳定性，降低了防窥结构层30内膜层分离的风险。
可选的，中间层312的厚度小于或等于3微米，比如可以是3微米、2.5微米、2微米、1.5微米、1微米或0.5微米等。
可以理解的是，中间层312的厚度越小，大角度光线照射至第一全反射界面f1的量就越多，防窥效果越好；中间层312的厚度越大，大角度光线照射至第一全反射界面f1的量就越少，防窥效果越差但出光亮度越好。故中间层312的厚度小于或等于3微米，以保证平衡防窥效果和出光亮度。
可选的，中间层312的折射率大于第二透光层32的折射率和第三透光层33的折射率，使得中间层312分别与第二透光层32和第三透光层33形成全反射界面，进而促使中间层312形成光波导层。当大角度的光线辐射入中间层312，光线会在中间层312中传递前进，直至辐射至构件部311，其中部分光线经构件部311辐射至背光侧，提高了防窥效果；部分光线经构件部311缩小出射角度后射出，提高出光效率。
以上对本申请实施例所提供的一种显示面板进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (20)

  1. 一种显示面板，包括：
    驱动基板；
    发光层，所述发光层设置在所述驱动基板上，所述发光层包括多个发光像素，以及
    防窥结构层，所述防窥结构层设置在所述发光层上；所述防窥结构层包括第一透光层和第二透光层，所述第一透光层设置在所述发光层远离所述驱动基板的一侧，所述第二透光层设置在所述第一透光层远离所述驱动基板的一侧；
    所述第一透光层至少包括构件部，所述构件部与所述发光像素重叠设置；
    所述构件部包括第一部分，所述第一部分与所述第二透光层形成第一全反射界面，所述第一全反射界面设置为反射部分光线至所述显示面板的背光侧。
  2. 根据权利要求1所述的显示面板，其中，所述防窥结构层还包括第三透光层，所述第三透光层设置在所述第一透光层靠近所述发光层的一侧，所述第三透光层上设置有对应于所述发光像素的开口；
    所述构件部还包括设置在所述第一部分远离所述驱动基板一侧的第二部分，所述第二部分设置在所述开口内且与所述开口的侧壁形成第二全反射界面，所述第二全反射界面设置为缩小部分光线的出射角度。
  3. 根据权利要求2所述的显示面板，其中，所述第二透光层的折射率小于所述构件部的折射率，所述第三透光层的折射率小于所述构件部的折射率。
  4. 根据权利要求2所述的显示面板，其中，自所述驱动基板向所述防窥结构层的方向上，所述构件部的第一部分的宽度递减，所述构件部的第二部分的宽度递增。
  5. 根据权利要求4所述的显示面板，其中，在所述构件部中，所述第二部分的底面与所述第一部分的顶面相对设置，所述第一部分的顶面位于所述第二部分的底面远离所述驱动基板的一侧；
    所述第一部分的侧面与所述第一部分的顶面所在的平面具有第一夹角，所述第二部分的侧面与所述第二部分的底面所在的平面具有第二夹角，所述第一夹角大于或等于50度且小于或等于75度，所述第二夹角大于或等于50度且小于或等于75度。
  6. 根据权利要求5所述的显示面板，其中，所述第三透光层的厚度介于1.5~2.5微米之间，所述构件部的厚度介于3~4微米之间。
  7. 根据权利要求5所述的显示面板，其中，所述第一夹角等于所述第二夹角。
  8. 根据权利要求5所述的显示面板，其中，所述第一部分的侧面与所述第二部分的侧面相连。
  9. 根据权利要求3所述的显示面板，其中，所述第一透光层还包括中间层，所述中间层连接于所述构件部，所述中间层设置在所述第三透光层远离所述驱动基板的一侧。
  10. 根据权利要求3所述的显示面板，其中，所述第一透光层的折射率大于或等于1.7，所述第二透光层的折射率小于或等于1.5，所述第三透光层的折射率小于或等于1.5。
  11. 根据权利要求1所述的显示面板，其中，所述显示面板还包括封装层，所述封装层设置在所述发光层和所述防窥结构层之间；
    所述封装层包括依次层叠设置的第一无机层、有机封装层和第二无机层，或，所述封装层为无机封装层。
  12. 一种显示面板，包括：
    驱动基板；
    发光层，所述发光层设置在所述驱动基板上，所述发光层包括多个发光像素，以及
    防窥结构层，所述防窥结构层设置在所述发光层上；所述防窥结构层包括第一透光层和第二透光层，所述第一透光层设置在所述发光层远离所述驱动基板的一侧，所述第二透光层设置在所述第一透光层远离所述驱动基板的一侧；
    所述第一透光层至少包括构件部，所述构件部与所述发光像素重叠设置；
    所述构件部包括第一部分，所述第一部分与所述第二透光层形成第一全反射界面，所述第一全反射界面设置为反射部分光线至所述显示面板的背光侧；
    所述防窥结构层还包括第三透光层，所述第三透光层设置在所述第一透光层靠近所述发光层的一侧，所述第三透光层上设置有对应于所述发光像素的开口；
    所述构件部还包括设置在所述第一部分远离所述驱动基板一侧的第二部分，所述第二部分设置在所述开口内且与所述开口的侧壁形成第二全反射界面，所述第二全反射界面设置为缩小部分光线的出射角度；
    所述显示面板还包括封装层，所述封装层设置在所述发光层和所述防窥结构层之间；所述封装层包括依次层叠设置的第一无机层、有机封装层和第二无机层。
  13. 根据权利要求12所述的显示面板，其中，所述第二透光层的折射率小于所述构件部的折射率，所述第三透光层的折射率小于所述构件部的折射率。
  14. 根据权利要求12所述的显示面板，其中，自所述驱动基板向所述防窥结构层的方向上，所述构件部的第一部分的宽度递减，所述构件部的第二部分的宽度递增。
  15. 根据权利要求14所述的显示面板，其中，在所述构件部中，所述第二部分的底面与所述第一部分的顶面相对设置，所述第一部分的顶面位于所述第二部分的底面远离所述驱动基板的一侧；
    所述第一部分的侧面与所述第一部分的顶面所在的平面具有第一夹角，所述第二部分的侧面与所述第二部分的底面所在的平面具有第二夹角，所述第一夹角大于或等于50度且小于或等于75度，所述第二夹角大于或等于50度且小于或等于75度。
  16. 根据权利要求15所述的显示面板，其中，所述第三透光层的厚度介于1.5~2.5微米之间，所述构件部的厚度介于3~4微米之间。
  17. 根据权利要求15所述的显示面板，其中，所述第一夹角等于所述第二夹角。
  18. 根据权利要求15所述的显示面板，其中，所述第一部分的侧面与所述第二部分的侧面相连。
  19. 根据权利要求13所述的显示面板，其中，所述第一透光层还包括中间层，所述中间层连接于所述构件部，所述中间层设置在所述第三透光层远离所述驱动基板的一侧。
  20. 根据权利要求13所述的显示面板，其中，所述第一透光层的折射率大于或等于1.7，所述第二透光层的折射率小于或等于1.5，所述第三透光层的折射率小于或等于1.5。
PCT/CN2023/133917 2023-06-12 2023-11-24 显示面板 Ceased WO2024255115A1 (zh)

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CN217903141U (zh) * 2022-04-08 2022-11-25 京东方科技集团股份有限公司 显示面板及显示装置
CN114967203A (zh) * 2022-05-16 2022-08-30 武汉华星光电半导体显示技术有限公司 显示面板及显示装置
CN114784079A (zh) * 2022-05-24 2022-07-22 北京维信诺科技有限公司 显示面板和显示装置
CN116096131A (zh) * 2023-01-19 2023-05-09 京东方科技集团股份有限公司 一种显示基板、显示基板的制作方法和显示装置

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