WO2023155243A1 - 显示装置 - Google Patents

显示装置 Download PDF

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Publication number
WO2023155243A1
WO2023155243A1 PCT/CN2022/078642 CN2022078642W WO2023155243A1 WO 2023155243 A1 WO2023155243 A1 WO 2023155243A1 CN 2022078642 W CN2022078642 W CN 2022078642W WO 2023155243 A1 WO2023155243 A1 WO 2023155243A1
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WO
WIPO (PCT)
Prior art keywords
display device
layer
phase retardation
light
retardation layer
Prior art date
Application number
PCT/CN2022/078642
Other languages
English (en)
French (fr)
Inventor
殷志远
贾永臻
Original Assignee
武汉华星光电半导体显示技术有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US17/764,190 priority Critical patent/US20230280517A1/en
Publication of WO2023155243A1 publication Critical patent/WO2023155243A1/zh

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Classifications

    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/50OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/30Polarising elements
    • G02B5/3083Birefringent or phase retarding elements
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/60OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
    • H10K59/65OLEDs integrated with inorganic image sensors

Definitions

  • the present application relates to the field of display technology, in particular to a display device.
  • CUP Camera Under Panel
  • the protective film layer on the folding screen is usually a high phase retardation material, the phase of the incident natural light will change, coupled with the polarizing layer of the screen and the polarization of the lens, it is easy to cause rainbow patterns when the lens is taken.
  • the current folding screen has the technical problem of rainbow stripes when the lens takes pictures due to the phase delay effect of the protective film layer on natural light and the polarization effect between the polarizing layer and the lens.
  • the present application provides a display device to improve the technical problem of current display devices such as the phenomenon of rainbow stripes when the lens under the screen takes pictures due to factors such as a screen protective film layer, a polarizing layer, and a lens.
  • the application provides a display device, including:
  • Displaying a functional layer including an additional function area and a main display area located on the periphery of the additional function area;
  • the first phase retardation layer is arranged on one side of the light emitting direction of the display function layer;
  • a camera module is arranged on the side of the display function layer away from the light emitting direction, and the camera module corresponds to the functional additional area;
  • the second phase retardation layer is arranged between the display function layer and the camera module;
  • the first phase delay layer has a first phase delay value
  • the second phase delay layer has a second phase delay value
  • the sum of the first phase delay value and the second phase delay value is greater than 8000 nanometers .
  • the display device further includes a substrate disposed on a side of the display function layer away from the light emitting direction.
  • the second phase retardation layer is disposed on the substrate.
  • the orthographic projection of the second phase retardation layer on the substrate coincides with the substrate.
  • the orthographic projection of the substrate on the second phase retardation layer coincides with the second phase retardation layer.
  • the second phase retardation layer corresponds to the function added region.
  • the orthographic projection of the function added region on the second phase retardation layer is located in the second phase retardation layer.
  • the second phase retardation layer is disposed on the camera module.
  • the orthographic projection of the function added region on the second phase retardation layer is located in the second phase retardation layer.
  • the substrate is provided with a first light transmission hole, and the first light transmission hole corresponds to the functional additional area.
  • the orthographic projection of the first light transmission hole on the display function layer is located in the functional additional area.
  • a second light transmission hole corresponding to the first light transmission hole is disposed on the second phase retardation layer.
  • the centerline of the second light transmission hole coincides with the centerline of the first light transmission hole.
  • the diameter of the second light transmission hole is smaller than the diameter of the first light transmission hole.
  • the camera module includes a lens corresponding to the second light transmission hole.
  • the centerline of the lens coincides with the centerline of the second light transmission hole.
  • the included angle formed by the line connecting the diameters of the second light transmission hole and the center point of the surface of the lens is greater than or equal to 90 degrees.
  • the included angle formed by the line connecting the diameters of the second light transmission hole and the center point of the surface of the lens is less than or equal to 110 degrees.
  • the light transmittance of the second phase retardation layer is greater than 95%.
  • the second phase retardation value of the second phase retardation layer is greater than or equal to 4000 nanometers and less than or equal to 8000 nanometers.
  • the present application protects the device by setting the first phase retardation layer to stabilize the quality of the display device.
  • a second phase delay layer is set between the display function layer and the camera module, and the sum of the first phase delay value of the first phase delay layer and the second phase delay value of the second phase delay layer is greater than 8000 nanometers, so that the phase delay of natural light before reaching the camera module exceeds 8000 nanometers, thereby eliminating the interference phenomenon of natural light, eliminating defects such as rainbow patterns, and improving the display effect.
  • FIG. 1 is a schematic diagram of the first overall structure of the display device described in the present application.
  • FIG. 2 is a schematic diagram of the second overall structure of the display device described in the present application.
  • Fig. 3 is a schematic diagram of the third overall structure of the display device described in the present application.
  • FIG. 4 is a schematic diagram of the first structure of the second phase retardation layer described in the present application.
  • FIG. 5 is a schematic diagram of a second structure of the second phase retardation layer described in the present application.
  • FIG. 6 is a schematic diagram of the bonding position of the second phase retardation layer and the substrate of the present application.
  • CUP Camera Under Panel
  • the protective film of the flexible folding screen is usually a bendable transparent organic film layer material, such as polyethylene terephthalate (PET) and other high phase retardation materials, which will cause the incident natural light to phase Changes, coupled with the polarizer of the screen and the polarization of the lens, can easily lead to rainbow patterns when taking pictures with the lens.
  • PET polyethylene terephthalate
  • the present application proposes the following solutions based on the above technical problems.
  • the present application provides a display device, including a display function layer 100 , a first phase retardation layer 200 disposed on one side of the display function layer 100 in the light emitting direction, and a first phase retardation layer 200 disposed on the display function layer 100 .
  • the camera module 300 on the side away from the light emitting direction and the second phase retardation layer 400 disposed between the display function layer 100 and the camera module 300 .
  • the display function layer 100 includes an additional function area 110 and a main display area 120 located around the additional function area 110 , and the camera module 300 corresponds to the additional function area 110 .
  • the first phase delay layer 200 has a first phase delay value
  • the second phase delay layer 400 has a second phase delay value
  • the sum of the first phase delay value and the second phase delay value is greater than 8000 nanometers .
  • the present application protects the device by setting the first phase delay layer 200 to stabilize the quality of the display device.
  • the present application also A second phase delay layer 400 is provided between the display function layer 100 and the camera module 300, and the first phase delay value of the first phase delay layer 200 is the same as the first phase delay value of the second phase delay layer 400.
  • the sum of the two phase delay values is greater than 8000 nanometers, so that the phase delay of natural light before reaching the camera module 300 exceeds 8000 nanometers, thereby eliminating the interference phenomenon of natural light, eliminating defects such as rainbow patterns, and improving the display effect.
  • the first phase delay value and the second phase delay value may also be referred to as in-plane delay values.
  • the present application combines the fact that the phase retardation value of the protective film layer of the display device is relatively high, by setting the second phase retardation layer 400 and making the phase retardation value of the first phase retardation layer 200 The sum of the phase retardation values with the second phase retardation layer 400 is greater than 8000 nanometers, thereby eliminating the interference of natural light, thereby eliminating defects such as rainbow stripes.
  • the additional function area 110 can be used for display, so as to realize a full-screen display, and the additional function area 110 can also be used as a lighting channel for the camera module 300 to perform lighting.
  • the first phase retardation layer 200 may be a protective film layer having an anti-scratch effect, such as a polyethylene terephthalate (PET) film layer.
  • PET polyethylene terephthalate
  • FIG. 1 is a schematic diagram of the first overall structure of the display device of the present application.
  • the display device may also include a The substrate 500, the second phase retardation layer 400 is disposed on the substrate 500, so that the second phase retardation layer 400 can be kept relatively fixed with the substrate 500, that is, the second phase retardation layer 400 can
  • the function additional area 110 corresponding to the display function layer 100 is stabilized, so as to achieve a more stable effect of eliminating rainbow patterns.
  • the second phase retardation layer 400 is disposed on the side of the substrate 500 facing away from the display function layer 100, there is no need to insert a new phase delay layer 400 between the stacked modules of the display device.
  • a layer of independent diaphragm can not only reduce the difficulty of manufacturing the second phase retardation layer 400, but also achieve a good effect of eliminating rainbow patterns.
  • the display device may further include a buffer layer (not shown in the figure) disposed on the substrate 500, a backplane layer 600 disposed on the buffer layer, a The polarizer 700 on the light emitting side of the display function layer 100 and the optical adhesive layer 800 disposed on the polarizer 700 .
  • the buffer layer and the backplane layer 600 are located on the side of the display function layer 100 away from the light emitting direction and between the substrate 500 and the display function layer 100, and the first phase retardation layer 200 is disposed on on the optical adhesive layer 800 .
  • the substrate 500 together with the backplane layer 600 and the display function layer 100 constitute a display panel
  • the display panel may be a flexible panel or a rigid panel.
  • the material of the substrate 500 may be glass, stainless steel sheet, copper foil or other metal sheets or alloy sheets.
  • the material of the substrate 500 may be polyimide (PI), polyethylene terephthalate (PET), ultra-thin glass, polymer /Nano-inorganic multi-layer laminated structure materials, etc., can also be glass, stainless steel sheet, copper foil or other metal sheets or alloy sheets, etc., if the flexible display panel needs to be bent or folded, the flexible display panel needs to be The substrate 500 is patterned in the bending area.
  • the cushioning layer may be made of a relatively soft film material, such as an ultra-clean foam material, rubber foam material, and the like.
  • the backplane layer 600 may be a flexible support material, polyimide (PI) material.
  • the polarizer 700 can be composed of various film layers such as polyvinyl alcohol material layer (PVA), triacetyl cellulose material layer (TAC), pressure-sensitive adhesive layer, release film layer, and protective film layer. Composite.
  • PVA polyvinyl alcohol material layer
  • TAC triacetyl cellulose material layer
  • pressure-sensitive adhesive layer release film layer
  • protective film layer protective film layer
  • the optical adhesive layer 800 may be made of materials such as silicone rubber, acrylic resin, unsaturated polyester, polyurethane, and epoxy resin.
  • the orthographic projection of the second phase retardation layer 400 on the substrate 500 coincides with the substrate 500, and the substrate 500
  • the orthographic projection on layer 400 coincides with said second phase retardation layer 400 .
  • the second phase retardation layer 400 can be set on the entire surface of the substrate 500, that is, the second phase retardation layer 400 can completely cover the substrate 500, at this time, the second phase retardation
  • the manufacturing process of the layer 400 is relatively simple, and alignment is easy, which can effectively reduce the difficulty and cost of the manufacturing process.
  • FIG. 2 is a schematic diagram of the second overall structure of the display device described in this application.
  • the second phase retardation layer 400 may correspond to the functional additional area 110, that is, the The second phase retardation layer 400 may only be disposed in a part of the substrate 500 corresponding to the additional functional region, so as to save the material cost of the second phase retardation layer 400 .
  • the orthographic projection of the functional additional region 110 on the second phase retardation layer 400 is located in the second phase retardation layer 400, so that the second phase retardation layer 400 can All the natural light in the functional additional area 110 has a sufficient retarding effect, avoiding or reducing the "light leakage” phenomenon.
  • the “light leakage” phenomenon can be understood as the natural light incident on the additional functional area without passing through the second phase retardation layer 400, but directly incident on the camera module 300 in.
  • FIG. 3 is a schematic diagram of the third overall structure of the display device of the present application.
  • the second phase retardation layer 400 can be arranged on the camera module 300, so The orthographic projection of the function added region 110 on the second phase delay layer 400 is located in the second phase delay layer 400 .
  • the second phase delay layer 400 by arranging the second phase delay layer 400 on the camera module 300, it can further delay the natural light, and the second phase delay layer 400 can follow the camera module 300.
  • the module 300 is aligned with the function additional area 110 of the display function layer 100, that is, the alignment procedure between the second phase delay layer 400 and the function additional area 110 is reduced, thereby simplifying the display device. process and improve production efficiency.
  • FIG. 4 is a schematic diagram of the first structure of the second phase retardation layer 400 described in the present application.
  • the light transmission hole 510 corresponds to the function additional area 110 , and the orthographic projection of the first light transmission hole 510 on the display function layer 100 is located in the function addition area 110 .
  • the first light transmission hole 510 penetrates the substrate 500 and the backplane layer 600 along the light emitting direction of the display function layer 100 , so that the natural light incident into the functional additional area 110 It can directly reach the camera module 300 through the first light-transmitting hole 510 , improving the light-gathering rate of the camera module 300 .
  • FIG. 5 is a schematic diagram of the second structure of the second phase retardation layer 400 described in the present application.
  • the second phase retardation layer 400 is provided with a 510 corresponds to the second light transmission hole 410 , the second light transmission hole 410 can reduce the light interception effect of the second phase retardation layer 400 to a certain extent, and further improve the light collection rate of the camera module 300 .
  • FIG. 6 is a schematic diagram of the bonding position of the second phase retardation layer 400 and the substrate 500 in this application.
  • the first light-transmitting hole 510 and the second light-transmitting hole The shape of the hole 410 may be a circle, a square, a regular hexagon or other shapes.
  • the shapes of the first light transmission hole 510 and the second light transmission hole 410 can be both circular or square.
  • the shape of the second phase retardation layer 400 can be circular, rectangular, square, regular hexagonal or other shapes, as long as it can completely cover the second light-transmitting hole 410 and the first light-transmitting hole 510 .
  • the camera module 300 includes a lens 310 corresponding to the second light-transmitting hole 410 , and the center line of the second light-transmitting hole 410 is in line with the first Centerlines of the light transmission holes 510 coincide, and the diameter of the second light transmission hole 410 is smaller than the diameter of the first light transmission hole 510 .
  • the second light-transmitting hole 410 and the first light-transmitting hole can be 510 alignment is more accurate.
  • the diameter of the second light transmission hole 410 is smaller than the diameter of the first light transmission hole 510 will reduce the light transmittance of the display device in the function additional area 110 to a certain extent, but the function can be added
  • the incident natural light at the edge of the area 110 acts as a cover (that is, adjusts the incident angle of natural light), thereby alleviating or solving the stronger Brewster effect caused by the larger incident angle of natural light at the edge of the lens 310 of the camera module 300, The rainbow streak phenomenon is a more serious problem.
  • the Brewster effect can be understood as: when a beam of light is projected on the interface of two media (such as air and glass), if the incident angle ⁇ of the light in the first medium (such as air) The tangent value of tan ⁇ is equal to the relative refractive index of the second medium (such as glass) (that is, the ratio of the refractive index n 2 of the glass to the refractive index n 1 of the air), then the reflected light becomes completely linearly polarized light, and The refracted light is still partially polarized, and the angle of incidence at this time is called "Brewster's angle", or polarization angle.
  • the first medium may be the air in the functional additional area 110
  • the second medium may be the lens 310 of the camera module 300 .
  • Natural light is projected to the interface between the air and the lens 310. If the second phase retardation layer 400 is not provided or the diameter of the second light transmission hole 410 is greater than or equal to the first light transmission hole 510, then the incident angle of natural light It can be the polarization angle. At this time, the reflected light is completely linearly polarized light. At this time, light interference phenomenon will occur, and then rainbow pattern phenomenon will occur. It should be noted that the phenomenon of interference of light has conditions: only coherent light sources with the same frequency, constant phase difference, and consistent vibration direction of two columns of light waves can produce light interference. The light emitted by two ordinary independent light sources cannot have the same frequency, let alone have a fixed phase difference, so interference cannot occur.
  • the centerline of the lens 310 coincides with the centerline of the second light transmission hole 410, so that the lens 310 and the second light transmission hole 410,
  • the first light-transmitting holes 510 are precisely aligned to improve lighting efficiency.
  • the angle ⁇ formed by the line connecting the diameters of the second light transmission hole 410 and the center point of the surface of the lens 310 is greater than or equal to 90 degrees.
  • the included angle ⁇ is the actual viewing angle of the lens 310 when the natural light does not pass through the second phase retardation layer 400 (that is, the natural light passes through the second light transmission hole 410), and the actual viewing angle of the lens 310 is greater than or equal to 90 degrees, A wider imaging range can be obtained.
  • the actual viewing angle of the lens 310 can be understood as: taking any vertical plane passing through the center line of the second light transmission hole 410 as the central symmetry plane, in the second light transmission hole 410 Take two points on the edge position near the side of the camera module 300, these two points are symmetrical about the central symmetry plane, then the actual angle of view of the lens 310 is the distance between these two points and the lens 310 The angle formed by the center points.
  • the viewing angle of the lens 310 of the camera module 300 in the super wide-angle mode is usually 110 degrees to 120 degrees.
  • the actual viewing angle ⁇ of the lens 310 is smaller than the viewing angle of the general lens 310 .
  • the included angle ⁇ formed by the line connecting the diameters of the second light transmission hole 410 and the center point of the surface of the lens 310 may be between 90 degrees and 110 degrees, that is, the included angle ⁇ is greater than or equal to 90 degrees and less than or equal to 110 degrees, so as to ensure that no rainbow pattern phenomenon can be seen under the actual viewing angle of the lens 310, and further improve the imaging effect.
  • the angle ⁇ formed by the line connecting the diameters of the second light transmission hole 410 and the center point of the surface of the lens 310 can be set to 90 degrees, so as to eliminate defects such as rainbow stripes to the greatest extent.
  • the light transmittance of the second phase retardation layer 400 is greater than 95%, so as to reduce the shading effect of the second phase retardation layer 400 on light as much as possible, and improve the light of the display device. transmittance.
  • the second phase delay value of the second phase delay layer 400 is greater than or equal to 4000 nanometers and less than or equal to 8000 nanometers, so as to be compatible with the first phase delay value of the first phase delay layer 200 matching, so that the sum of the first phase delay value and the second phase delay value is always greater than or equal to 8000 nanometers, so as to ensure that the phenomenon of rainbow fringes is completely eliminated, and the display and camera quality are stabilized.
  • the thickness of the second phase retardation layer 400 also needs to be limited.
  • the thickness of the second phase retardation layer 400 in the light emitting direction of the display function layer 100, can be any value between 30 micrometers and 50 micrometers, so that the second phase retardation layer The phase delay value of 400 meets the requirements of use.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Polarising Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种显示装置,包括显示功能层(100)、设置于显示功能层(100)出光方向一侧的第一相位延迟层(200)、设置于显示功能层(100)背离出光方向一侧的摄像模组(300)及设置于显示功能层(100)与摄像模组(300)之间的第二相位延迟层(400),其中,第一相位延迟层(200)的相位延迟值与第二相位延迟层(400)的相位延迟值之和大于8000纳米。

Description

显示装置 技术领域
本申请涉及显示技术的领域,具体涉及一种显示装置。
背景技术
屏下镜头(Camera Under Panel,CUP)技术是前置摄像技术的主要开发方向,其将前置镜头隐藏于屏幕之下,在自拍时,前置镜头上方的屏幕转变为透明状态,使得光线充分进入,在不拍照时,“透明屏”可正常显示屏幕内容。
现阶段,由于折叠屏幕上的保护膜层通常为高相位延迟材料,会使入射的自然光发生相位变化,再加上屏幕的偏光层及镜头的偏振作用,容易导致镜头拍照时出现彩虹纹现象。
技术问题
目前的折叠屏幕存在因保护膜层对自然光的相位延迟作用及偏光层与镜头的偏振作用而导致镜头拍照时出现彩虹纹现象的技术问题。
技术解决方案
本申请提供一种显示装置,以改善当前显示装置因屏幕保护膜层、偏光层及镜头等因素而导致屏下镜头拍照时出现彩虹纹现象的技术问题。
为解决上述技术问题,本申请提供的技术方案如下:
本申请提供一种显示装置,包括:
显示功能层,包括功能附加区和位于所述功能附加区外围的主显示区;
第一相位延迟层,设置于所述显示功能层出光方向的一侧;
摄像模组,设置于所述显示功能层背离出光方向的一侧,所述摄像模组与所述功能附加区对应;以及
第二相位延迟层,设置于所述显示功能层和所述摄像模组之间;
其中,所述第一相位延迟层具有第一相位延迟值,所述第二相位延迟层具有第二相位延迟值,所述第一相位延迟值和所述第二相位延迟值之和大于8000纳米。
在本申请的显示装置中,所述显示装置还包括设置于所述显示功能层背离出光方向一侧的基板。
在本申请的显示装置中,所述第二相位延迟层设置于所述基板上。
在本申请的显示装置中,所述第二相位延迟层在所述基板上的正投影与所述基板重合。
在本申请的显示装置中,所述基板在所述第二相位延迟层上的正投影与所述第二相位延迟层重合。
在本申请的显示装置中,所述第二相位延迟层与所述功能附加区对应。
在本申请的显示装置中,所述功能附加区在所述第二相位延迟层上的正投影位于所述第二相位延迟层内。
在本申请的显示装置中,所述第二相位延迟层设置于所述摄像模组上。
在本申请的显示装置中,所述功能附加区在所述第二相位延迟层上的正投影位于所述第二相位延迟层内。
在本申请的显示装置中,所述基板设置有第一透光孔,所述第一透光孔与所述功能附加区对应。
在本申请的显示装置中,所述第一透光孔在所述显示功能层上的正投影位于所述功能附加区内。
在本申请的显示装置中,所述第二相位延迟层上设置有与所述第一透光孔对应的第二透光孔。
在本申请的显示装置中,所述第二透光孔的中心线与所述第一透光孔的中心线重合。
在本申请的显示装置中,所述第二透光孔的直径小于所述第一透光孔的直径。
在本申请的显示装置中,所述摄像模组包括与所述第二透光孔对应的镜头。
在本申请的显示装置中,所述镜头的中心线与所述第二透光孔的中心线重合。
在本申请的显示装置中,所述第二透光孔的直径连线与所述镜头的表面中心点形成的夹角大于或等于90度。
在本申请的显示装置中,所述第二透光孔的直径连线与所述镜头的表面中心点形成的夹角小于或等于110度。
在本申请的显示装置中,所述第二相位延迟层的光透过率大于95%。
在本申请的显示装置中,所述第二相位延迟层的第二相位延迟值大于或等于4000纳米且小于或等于8000纳米。
有益效果
本申请通过设置第一相位延迟层对所述装置进行保护,使所述显示装置的品质稳定,为了克服所述第一相位延迟层所带来的相位延迟的不利影响,本申请还在所述显示功能层和所述摄像模组之间设置第二相位延迟层,并使所述第一相位延迟层的第一相位延迟值与所述第二相位延迟层的第二相位延迟值之和大于8000纳米,从而使自然光在到达摄像模组之前的相位延迟超过8000纳米,进而消除自然光的干涉现象,消除彩虹纹等不良,改善显示效果。
附图说明
为了更清楚地说明本申请实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是本申请所述显示装置的第一种整体结构示意图;
图2是本申请所述显示装置的第二种整体结构示意图;
图3是本申请所述显示装置的第三种整体结构示意图;
图4是本申请所述第二相位延迟层的第一种结构示意图;
图5是本申请所述第二相位延迟层的第二种结构示意图;
图6是本申请所述第二相位延迟层与所述基板的贴合位置示意图。
附图标记说明:
显示功能层100、功能附加区110、主显示区120、第一相位延迟层200、摄像模组300、镜头310、第二相位延迟层400、第二透光孔410、基板500、第一透光孔510、背板层600、偏光片700、光学胶层800。
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。
屏下镜头(Camera Under Panel,CUP)技术是前置摄像技术的主要开发方向,其将前置镜头隐藏于屏幕之下,在自拍时,前置镜头上方的屏幕转变为透明状态,使得光线充分进入,在不拍照时,“透明屏”可正常显示屏幕内容。
现阶段,柔性折叠屏的保护膜通常为可弯折的透明有机膜层材料,如聚对苯二甲酸乙二酯(PET)等高相位延迟的材料,这类材料会使入射的自然光发生相位变化,再加上屏幕的偏光片及镜头的偏振作用,容易导致镜头拍照时出现彩虹纹现象。本申请基于上述技术问题提出了以下方案。
请参阅图1至图6,本申请提供一种显示装置,包括显示功能层100、设置于所述显示功能层100出光方向一侧的第一相位延迟层200、设置于所述显示功能层100背离出光方向一侧的摄像模组300及设置于所述显示功能层100与所述摄像模组300之间的第二相位延迟层400。所述显示功能层100包括功能附加区110和位于所述功能附加区110外围的主显示区120,所述摄像模组300与所述功能附加区110对应。所述第一相位延迟层200具有第一相位延迟值,所述第二相位延迟层400具有第二相位延迟值,所述第一相位延迟值和所述第二相位延迟值之和大于8000纳米。
本申请通过设置第一相位延迟层200对所述装置进行保护,使所述显示装置的品质稳定,为了克服所述第一相位延迟层200所带来的相位延迟的不利影响,本申请还在所述显示功能层100和所述摄像模组300之间设置第二相位延迟层400,并使所述第一相位延迟层200的第一相位延迟值与所述第二相位延迟层400的第二相位延迟值之和大于8000纳米,从而使自然光在到达摄像模组300之前的相位延迟超过8000纳米,进而消除自然光的干涉现象,消除彩虹纹等不良,改善显示效果。
在本实施例中,所述第一相位延迟值和所述第二相位延迟值也可以称作面内延迟值。
需要说明的是,发明人基于光的干涉原理,对自然光的干涉现象与相位延迟值之间的关系进行多次探索、试验,发现当光经过相位延迟值低于2000纳米或高于8000纳米的相位延迟材料后,干涉现象消失。本申请基于上述发现,同时结合所述显示装置的保护膜层的相位延迟值较高的事实,通过设置所述第二相位延迟层400,并使所述第一相位延迟层200的相位延迟值和所述第二相位延迟层400的相位延迟值之和大于8000纳米,从而消除自然光的干涉,进而消除彩虹纹等不良。
现结合具体实施例对本申请的技术方案进行描述。以下分别进行详细说明。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。
在本实施例中,所述功能附加区110可以用于显示,从而实现全面屏显示,所述功能附加区110也可以用作采光通道,以供所述摄像模组300进行采光。
在本实施例中,所述第一相位延迟层200可以为具有抗刮擦作用的保护膜层,如聚对苯二甲酸乙二酯(PET)膜层。
请参阅图1,图1是本申请所述显示装置的第一种整体结构示意图,在本申请的显示装置中,所述显示装置还可以包括设置于所述显示功能层100背离出光方向一侧的基板500,所述第二相位延迟层400设置于所述基板500上,以使所述第二相位延迟层400可以与所述基板500保持相对固定,即所述第二相位延迟层400可以稳定对应所述显示功能层100的功能附加区110,从而起到更加稳定的消除彩虹纹的效果。
需要说明的是,在本实施例中,由于所述第二相位延迟层400设置在基板500背离所述显示功能层100的一侧,因而无需在所述显示装置的模组叠构间插入新的一层独立膜片,既可降低设置第二相位延迟层400的制程难度,同时也可达到良好的消除彩虹纹效果。
请参阅图1,在本实施例中,所述显示装置还可以包括设置于所述基板500上的缓冲层(图中未示出)、设置于所述缓冲层上的背板层600、设置于所述显示功能层100出光侧的偏光片700及设置于所述偏光片700上的光学胶层800。其中,所述缓冲层和所述背板层600位于显示功能层100背离出光方向的一侧且位于所述基板500和所述显示功能层100之间,所述第一相位延迟层200设置于所述光学胶层800上。
在本实施例中,所述基板500与所述背板层600及所述显示功能层100共同构成显示面板,所述显示面板可以为柔性面板,也可以是刚性面板。
在本实施例中,当所述显示面板为刚性面板时,所述基板500的材料可以为玻璃、不锈钢片、铜箔或其他金属片或合金片材等。
在本实施例中,当所述显示面板为柔性面板时,所述基板500的材料可以是聚酰亚胺(PI)、聚对苯二甲酸乙二酯(PET)、超薄玻璃、聚合物/纳米无机物的多层叠层结构材料等,也可以是玻璃、不锈钢片、铜箔或其他金属片或合金片材等,若所述柔性显示面板需要弯折或折叠时,则需对柔性的基板500在弯折区做图案化处理。
在本实施例中,所述缓冲层可以由材质较为柔软的膜层材料,如超净泡沫材料、橡胶发泡材料等制备。
在本实施例中,所述背板层600可以为柔性支撑材料,聚酰亚胺(PI)材料。
在本实施例中,所述偏光片700可以由聚乙烯醇材料层(PVA)、三醋酸纤维素材料层(TAC)、压敏胶层、离型膜层及保护膜层等多种膜层复合而成。
在本实施例中,所述光学胶层800可以由有机硅橡胶、丙烯酸型树脂及不饱和聚酯、聚氨酯、环氧树脂等材料制备。
请参阅图1,在本申请的显示装置中,所述第二相位延迟层400在所述基板500上的正投影与所述基板500重合,以及,所述基板500在所述第二相位延迟层400上的正投影与所述第二相位延迟层400重合。也就是说,所述第二相位延迟层400可以在所述基板500上整面设置,即,所述第二相位延迟层400可以完全覆盖所述基板500,此时,所述第二相位延迟层400的制程相对简单,对位容易,可有效降低制程难度与成本。
请参阅图2,图2是本申请所述显示装置的第二种整体结构示意图,在本实施例中,所述第二相位延迟层400可以与所述功能附加区110对应,即,所述第二相位延迟层400可以仅设置在所述基板500上与所述附加功能区对应的部分区域内,以节省所述第二相位延迟层400的材料成本。
在本实施例中,所述功能附加区110在所述第二相位延迟层400上的正投影位于所述第二相位延迟层400内,以使所述第二相位延迟层400可以对入射至所述功能附加区110内的所有自然光起到充分的延迟作用,避免或减少“漏光”现象。需要说明的是,在本实施例中,所述“漏光”现象可以理解为自然光入射至所述附加功能区内未经过所述第二相位延迟层400,而是直接入射至所述摄像模组300中。
请参阅图3,图3是本申请所述显示装置的第三种整体结构示意图,在本申请的显示装置中,所述第二相位延迟层400可以设置于所述摄像模组300上,所述功能附加区110在所述第二相位延迟层400上的正投影位于所述第二相位延迟层400内。本实施例通过将所述第二相位延迟层400设置在所述摄像模组300上,既可以对自然光起到进一步的相位延迟作用,而且所述第二相位延迟层400可以随着所述摄像模组300与所述显示功能层100的功能附加区110进行对位,即,减少一道所述第二相位延迟层400与所述功能附加区110的对位程序,进而简化所述显示装置的制程,提高生产效率。
请参阅图4,图4是本申请所述第二相位延迟层400的第一种结构示意图,在本申请的显示装置中,所述基板500设置有第一透光孔510,所述第一透光孔510与所述功能附加区110对应,所述第一透光孔510在所述显示功能层100上的正投影位于所述功能附加区110内。在本实施例中,所述第一透光孔510沿所述显示功能层100的出光方向贯穿所述基板500和所述背板层600,以使入射至所述功能附加区110内的自然光可以通过所述第一透光孔510直接到达所述摄像模组300中,提高所述摄像模组300的采光率。
请参阅图5,图5是本申请所述第二相位延迟层400的第二种结构示意图,在本实施例中,所述第二相位延迟层400上设置有与所述第一透光孔510对应的第二透光孔410,所述第二透光孔410可以一定程度上减轻所述第二相位延迟层400的光拦截效应,进一步提高所述摄像模组300的采光率。
请参阅图6,图6是本申请所述第二相位延迟层400与所述基板500的贴合位置示意图,在本实施例中,所述第一透光孔510和所述第二透光孔410的形状可以为圆形、正方形、正六边形或其他形状。作为优选的,所述第一透光孔510和所述第二透光孔410的形状可以同为圆形或同为正方形。所述第二相位延迟层400的形状可以为圆形、矩形、正方形、正六边形或其他形状,只要能完全覆盖所述第二透光孔410和所述第一透光孔510即可。
请参阅图5,在本申请的显示装置中,所述摄像模组300包括与所述第二透光孔410对应的镜头310,所述第二透光孔410的中心线与所述第一透光孔510的中心线重合,且所述第二透光孔410的直径小于所述第一透光孔510的直径。
本实施例通过将所述第二透光孔410的中心线与所述第一透光孔510的中心线设置为重合,可以使所述第二透光孔410与所述第一透光孔510对位更加精准。虽然所述第二透光孔410的直径小于所述第一透光孔510的直径会一定程度上降低所述显示装置在功能附加区110内的光透过率,但是可以对所述功能附加区110边缘位置的入射自然光起到遮掩作用(即调整自然光的入射角度),从而缓解或解决摄像模组300的镜头310边缘由于自然光的入射角度更大而引起的布儒斯特效应更强、彩虹纹现象更严重的问题。
需要说明的是,所述布儒斯特效应可以理解为:当一束光投射于两介质(如空气和玻璃)的界面时,如果光在第一种介质(如空气)中的入射角α的正切值tanα等于第二种介质(如玻璃)的相对折射率(即玻璃的折射率n 2与所述空气的折射率n 1的比值),那么其反射光就成为完全线偏振光,而折射光仍为部分偏振光,此时的入射角称为“布鲁斯特角”,或称为偏振角。
在本实施例中,所述第一种介质可以为所述功能附加区110内的空气,所述第二种介质可以为所述摄像模组300的镜头310。自然光投射至空气与镜头310的界面,若是未设置所述第二相位延迟层400或所述第二透光孔410的直径大于或等于所述第一透光孔510时,那么自然光的入射角可以为偏振角,此时,其反射光线为完全线偏振光,此时就会产生光的干涉现象,进而产生彩虹纹现象。需要说明的是,光的干涉现象具有形成条件:只有两列光波的频率相同,相位差恒定,振动方向一致的相干光源,才能产生光的干涉。由两个普通独立光源发出的光,不可能具有相同的频率,更不可能存在固定的相位差,因此不能产生干涉现象。
请参阅图5,在本申请的显示装置中,所述镜头310的中心线与所述第二透光孔410的中心线重合,以使所述镜头310与所述第二透光孔410、所述第一透光孔510对位精准,提高采光率。
在本实施例中,所述第二透光孔410的直径连线与所述镜头310的表面中心点形成的夹角θ大于或等于90度。所述夹角θ为自然光未经过所述第二相位延迟层400(即自然光经过所述第二透光孔410)时的镜头310实际视野角,镜头310的实际视野角大于或等于90度,可以获得更加宽广的摄像范围。
在本实施例中,所述镜头310的实际视野角可以理解为:以经过所述第二透光孔410中心线的任一竖直面作为中心对称面,在所述第二透光孔410靠近所述摄像模组300一侧的边缘位置上取两个点,这两个点关于所述中心对称面对称,那么镜头310的实际视野角则为这两个点与所述镜头310的中心点形成的夹角。
需要说明的是,现阶段的显示装置中,摄像模组300的镜头310在超广角模式下的镜头310视野角通常为110度至120度,在本实施例中,由于所述第二相位延迟层400的遮掩作用,所述镜头310的实际视野角θ要小于一般的镜头310视野角。
因此,在本实施例中,所述第二透光孔410的直径连线与所述镜头310的表面中心点形成的夹角θ可以介于90度至110度之间,即所述夹角θ大于或等于90度且小于或等于110度,以确保在此镜头310的实际视野角下看不到彩虹纹现象,进一步改善摄像效果。进一步地,作为优选,所述第二透光孔410的直径连线与所述镜头310的表面中心点形成的夹角θ可以设置为90度,以最大限度地消除彩虹纹等不良。
在本申请的显示装置中,所述第二相位延迟层400的光透过率大于95%,以尽可能降低所述第二相位延迟层400对光线的遮光影响,改善所述显示装置的光透过率。
在本实施例中,在所述第二相位延迟层400的第二相位延迟值大于或等于4000纳米且小于或等于8000纳米,以与所述第一相位延迟层200的第一相位延迟值适配,使所述第一相位延迟值和所述第二相位延迟值之和始终大于或等于8000纳米,从而确保完全消除彩虹纹现象,稳定显示与摄像质量。
由于相位延迟膜层材料的相位延迟值随着其厚度增大而增大,因此,在本实施例中,所述第二相位延迟层400的厚度也需进行限制。在本实施例中,在所述显示功能层100的出光方向上,所述第二相位延迟层400的厚度可以为30微米至50微米之间的任意数值,以使所述第二相位延迟层400的相位延迟值符合使用要求。
以上对本申请实施例所提供的一种显示装置进行了详细介绍,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. 一种显示装置,包括:
    显示功能层,包括功能附加区和位于所述功能附加区外围的主显示区;
    第一相位延迟层,设置于所述显示功能层出光方向的一侧;
    摄像模组,设置于所述显示功能层背离出光方向的一侧,所述摄像模组与所述功能附加区对应;以及
    第二相位延迟层,设置于所述显示功能层和所述摄像模组之间;
    其中,所述第一相位延迟层具有第一相位延迟值,所述第二相位延迟层具有第二相位延迟值,所述第一相位延迟值和所述第二相位延迟值之和大于8000纳米。
  2. 根据权利要求1所述的显示装置,其中,所述显示装置还包括设置于所述显示功能层背离出光方向一侧的基板。
  3. 根据权利要求2所述的显示装置,其中,所述第二相位延迟层设置于所述基板上。
  4. 根据权利要求2所述的显示装置,其中,所述第二相位延迟层在所述基板上的正投影与所述基板重合。
  5. 根据权利要求4所述的显示装置,其中,所述基板在所述第二相位延迟层上的正投影与所述第二相位延迟层重合。
  6. 根据权利要求2所述的显示装置,其中,所述第二相位延迟层与所述功能附加区对应。
  7. 根据权利要求6所述的显示装置,其中,,所述功能附加区在所述第二相位延迟层上的正投影位于所述第二相位延迟层内。
  8. 根据权利要求1所述的显示装置,其中,所述第二相位延迟层设置于所述摄像模组上。
  9. 根据权利要求8所述的显示装置,其中,所述功能附加区在所述第二相位延迟层上的正投影位于所述第二相位延迟层内。
  10. 根据权利要求2所述的显示装置,其中,所述基板设置有第一透光孔,所述第一透光孔与所述功能附加区对应。
  11. 根据权利要求10所述的显示装置,其中,所述第一透光孔在所述显示功能层上的正投影位于所述功能附加区内。
  12. 根据权利要求11所述的显示装置,其中,所述第二相位延迟层上设置有与所述第一透光孔对应的第二透光孔。
  13. 根据权利要求11所述的显示装置,其中,所述第二透光孔的中心线与所述第一透光孔的中心线重合。
  14. 根据权利要求13所述的显示装置,其中,所述第二透光孔的直径小于所述第一透光孔的直径。
  15. 根据权利要求12所述的显示装置,其中,所述摄像模组包括与所述第二透光孔对应的镜头。
  16. 根据权利要求15所述的显示装置,其中,所述镜头的中心线与所述第二透光孔的中心线重合。
  17. 根据权利要求16所述的显示装置,其中,所述第二透光孔的直径连线与所述镜头的表面中心点形成的夹角大于或等于90度。
  18. 根据权利要求15所述的显示装置,其中,所述第二透光孔的直径连线与所述镜头的表面中心点形成的夹角小于或等于110度。
  19. 根据权利要求1所述的显示装置,其中,所述第二相位延迟层的光透过率大于95%。
  20. 根据权利要求1所述的显示装置,其中,所述第二相位延迟层的第二相位延迟值大于或等于4000纳米且小于或等于8000纳米。
PCT/CN2022/078642 2022-02-17 2022-03-01 显示装置 WO2023155243A1 (zh)

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