WO2022206834A1 - 显示面板和电子设备 - Google Patents

显示面板和电子设备 Download PDF

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Publication number
WO2022206834A1
WO2022206834A1 PCT/CN2022/084055 CN2022084055W WO2022206834A1 WO 2022206834 A1 WO2022206834 A1 WO 2022206834A1 CN 2022084055 W CN2022084055 W CN 2022084055W WO 2022206834 A1 WO2022206834 A1 WO 2022206834A1
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Prior art keywords
pixel
sub
layer
display area
display panel
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PCT/CN2022/084055
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English (en)
French (fr)
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杨文强
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维沃移动通信有限公司
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Publication of WO2022206834A1 publication Critical patent/WO2022206834A1/zh

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    • 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
    • H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
    • 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
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • 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
    • H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
    • H10K59/65—OLEDs integrated with inorganic image sensors

Definitions

  • the present application belongs to the field of display technology, and in particular relates to a display panel and an electronic device.
  • the screen-to-body ratio continues to increase, leaving more and more limited positions for cameras and other sensors on the front surface of electronic devices.
  • the under-screen camera design is gradually being adopted.
  • the existing organic light emitting diode (Organic Light Emitted Diode, OLED) display panel causes the light transmittance of the display area facing the camera to be low, which leads to the under-screen display. The camera is not very good at taking pictures through the screen.
  • the purpose of the embodiments of the present application is to provide a display panel and an electronic device, which can solve the problem that the light transmittance of the display area facing the camera is not high due to the influence of the pixel circuit and the setting of the polarizer in the display panel in the prior art, This leads to the problem that the camera under the screen does not take good pictures.
  • an embodiment of the present application provides a display panel, including:
  • a base substrate comprising a first display area and a second display area, the first display area at least partially surrounds the second display area;
  • a plurality of first pixels and a plurality of second pixels a plurality of the first pixels are located in the first display area, and the second pixels are located in the second display area;
  • a polarizing layer and an electrochromic layer the polarizer is located on a side of the first pixel away from the base substrate, and the electrochromic layer is located at a side of the second pixel away from the base substrate side, the orthographic projection of the first pixel on the base substrate falls within the orthographic projection of the polarizing layer on the base substrate, and the orthographic projection of the second pixel on the base substrate falls within the orthographic projection of the electrochromic layer on the base substrate, and the orthographic projection of the second pixel on the base substrate is the same as the orthographic projection of the polarizing layer on the base substrate
  • the projections do not overlap, and the electrochromic layer can switch between a colored state and a transparent state to transmit or reflect light.
  • the display panel further includes a transparent material layer, the transparent material layer and the polarizing layer are arranged in the same layer, and the transparent material layer is located on the side of the electrochromic layer away from the base substrate , the polarizing layer is provided with an opening, and the transparent material layer is arranged in the opening.
  • the polarizing layer and the electrochromic layer are disposed in the same layer, an opening is formed on the polarizing layer, and the electrochromic layer is disposed in the opening.
  • the electrochromic layer includes a plurality of electrochromic blocks, the electrochromic blocks are arranged in a one-to-one correspondence with the second pixels, and each of the electrochromic blocks includes a first sub-block, a second Two sub-blocks and a third sub-block, the second pixel includes a first sub-pixel, a second sub-pixel and a third sub-pixel, the first sub-block is arranged corresponding to the first sub-pixel, the second sub-pixel The sub-blocks are arranged corresponding to the second sub-pixels, the third sub-blocks are arranged corresponding to the third sub-pixels, and when the electrochromic layer is in a colored state, the first sub-blocks are colored as the same color as the light emitted by the first sub-pixel, the second sub-block is colored the same color as the light emitted by the second sub-pixel, the third sub-block is colored as the third sub-block Pixels emit light of the same color.
  • the electrochromic layer further includes a first driving electrode and a second driving electrode, the electrochromic block is disposed between the first driving electrode and the second driving electrode, and the first driving electrode
  • the driving electrodes and the second driving electrodes are made of transparent metal oxide materials.
  • the transparent metal oxide material is any one of ITO material and IZO material.
  • the first pixel includes a first pixel circuit and a first light-emitting device, the first pixel circuit is connected to the first light-emitting device, and the second pixel includes a second pixel circuit and a second light-emitting device , the second pixel circuit is connected to the second light-emitting device, the base substrate further includes a non-display area, and the second pixel circuit is located in the non-display area.
  • the pixel density of the first display area is greater than the pixel density of the second display area.
  • the area of the opening area of at least part of the second pixel is smaller than the area of the opening area of the first pixel.
  • an embodiment of the present application provides an electronic device, the electronic device includes the display panel according to the first aspect, and further includes a camera, where the camera is located in an area facing the second display area of the display panel .
  • the light transmission amount of the second display area is effectively increased without affecting the normal display effect of the display panel. Improved camera performance.
  • FIG. 1 is a schematic diagram of a stacked structure of a display panel according to an embodiment of the present application
  • FIG. 2 is the second schematic diagram of a stacked structure of a display panel provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of a pixel arrangement of a display panel according to an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of an electrochromic layer provided in an embodiment of the present application.
  • first, second and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and distinguish between “first”, “second”, etc.
  • the objects are usually of one type, and the number of objects is not limited.
  • the first object may be one or more than one.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the associated objects are in an "or” relationship.
  • FIG. 1 is a schematic diagram of a stacked structure of a display panel provided by an embodiment of the application
  • FIG. 2 is a schematic diagram of a stacked structure of a display panel provided by an embodiment of the application
  • FIG. 3 FIG. 4 is a schematic structural diagram of an electrochromic layer provided by an embodiment of the present application, which is a schematic diagram of a pixel arrangement of a display panel provided by an embodiment of the present application.
  • the display panel provided by the embodiment of the present application is applied to an electronic device.
  • the display panel includes a base substrate 101 , and the base substrate 101 includes a first display area and a second display area.
  • a display area at least partially surrounds the second display area, and the second display area may be disposed opposite to the camera 111 of the electronic device.
  • the display panel further includes a plurality of first pixels 112 and a plurality of second pixels 113 , wherein, A plurality of the first pixels 112 are located in the first display area on the base substrate 101 , the plurality of the first pixels 112 may be distributed in an array, and the plurality of the second pixels 113 are located in the second display area on the base substrate 101 . In the display area, a plurality of the second pixels 113 may be distributed in an array.
  • the display panel further includes a polarizing layer 114 and an electrochromic layer 115 , wherein the polarizing layer 114 is located on the side of the first pixel 112 away from the base substrate 101 , and the electrochromic layer 115 is located at the side of the second pixel 113 away from the substrate.
  • the orthographic projection of the first pixel 112 on the base substrate 101 falls within the orthographic projection of the polarizing layer 114 on the base substrate 101
  • the orthographic projection of the second pixel 113 on the base substrate 101 falls within the orthographic projection of the second pixel 113 on the base substrate 101.
  • the orthographic projection of the electrochromic layer 115 on the base substrate 101 does not overlap with the orthographic projection of the polarizing layer 114 on the base substrate 101, that is to say , the region corresponding to the second pixel 113 is not provided with the polarizing layer 114 , but is replaced by the electrochromic layer 115 .
  • the polarizing layer 114 can reflect the external ambient light, so as to prevent the ambient light from interfering with the light emitted by the first pixels 112 and affecting the normal display of the first display area; and the electrochromic layer 115 can be in a colored state or a transparent state. It can transmit or reflect light.
  • the electrochromic layer 115 is made of electrochromic material, and the optical properties (reflectivity, transmittance, absorptivity, etc.) of the electrochromic material will be affected by the applied electric field. A stable and reversible color change occurs under the action of , so the electrochromic layer 115 in the embodiments of the present application can be switched between the colored state and the transparent state. Specifically, when the electrochromic layer 115 is in the colored state, The electrochromic layer 115 can reflect or transmit light of the same color, while other colors of light are absorbed. When the electrochromic layer 115 is in a transparent state, the electrochromic layer 115 can transmit all the light irradiated to it. light on.
  • the camera 111 of the electronic device is set In the case of the opposite area of the second display area of the display panel, if the display panel needs to display the picture normally, the electrochromic layer 115 can be controlled to be in a colored state, and the color is the same as the light emitted by the second pixel 113.
  • the second pixel 113 in the second display area can pass through the electrochromic layer 115 when emitting light, and then emit from the front of the display panel, so as to ensure the display effect of the second display area, and the external ambient light only needs to be compatible with the electricity.
  • the color of the electrochromic layer 115 is inconsistent, it will be absorbed, thereby avoiding the influence of external ambient light; and when the camera 111 needs to be used to take pictures, the electrochromic layer 115 can be controlled to be in a transparent state, and the ambient light incident from the display panel will The camera 111 is irradiated through the electrochromic layer 115, thereby increasing the transmittance of external light, thereby improving the photographing effect of the camera under the screen.
  • the area corresponding to the second display area is not provided with the polarizing layer 114, it is not The polarizing layer 114 blocks external ambient light from entering the camera 111 from the second display area, thereby greatly increasing the amount of light entering the camera 111 .
  • the amount of incoming light can be increased by more than 30%, and the amount of incoming light from the original 25% can be increased to 55%, thereby improving the photographing effect of the camera.
  • the display panel further includes a transparent material layer 116 .
  • the transparent material layer 116 and the polarizing layer 114 are disposed in the same layer, and the transparent material layer 116 is located far from the electrochromic layer 115 .
  • the transparent material layer 116 has little influence on the transmittance of light, which can be ignored. It is made of transparent materials, specifically polymer glue, resin, transparent polyimide and other materials.
  • the polarizing layer 114 in the area corresponding to the second display area is hollowed out and replaced with a transparent material layer 116, and an electrochromic layer 115 is provided between the transparent material layer 116 and the second pixel 113, and the electrochromic layer 115 is used Reflects external ambient light.
  • the polarizing layer 114 and the electrochromic layer 115 are disposed in the same layer, the polarizing layer 114 is provided with an opening, and the electrochromic layer 115 is disposed in the opening. That is to say, the polarizer 114 in the area corresponding to the second display area is hollowed out and directly replaced by the electrochromic layer 115, and the electrochromic layer 115 is used to reflect the external ambient light, so that the thickness of the display panel can be reduced. .
  • the first pixel 112 includes a first pixel circuit and a first light emitting device, the first pixel circuit is connected to the first light emitting device to drive the first light emitting device to emit light, and the first pixel circuit and the first light-emitting device are located in the first display area of the base substrate 101, specifically, the first pixel circuit is located in the first display area of the base substrate 101, and the first light-emitting device is located in the first pixel circuit away from the substrate one side of the substrate 101 .
  • the first light emitting device 1122 includes a first anode 103 , a cathode 105 and a first organic light emitting layer 104 located between the first anode 103 and the cathode 105 .
  • the first pixel 112 can be further divided into a first red sub-pixel, a first green sub-pixel and a first blue sub-pixel, and the first red sub-pixel, the first green sub-pixel and the first blue sub-pixel can be
  • the cathode 105 is shared, and the first organic light-emitting layer 104 includes a first red organic light-emitting layer 1041, a first green organic light-emitting layer 1042 and a first blue organic light-emitting layer 1043, and the first red sub-pixel consists of the first anode 103, the first The red organic light-emitting layer 1041 and the cathode 105 are formed, the first green sub-pixel is formed by the first anode 103, the first green organic light-emitting layer 10
  • a pixel circuit layer 1120 is provided on the side of the first anode 103 close to the base substrate 101 , and the pixel circuit layer 1120 includes a plurality of first pixel circuits.
  • a first reflective layer 102 is also disposed between the first pixel circuit and the base substrate 101.
  • the second pixel 113 includes a second pixel circuit and a second light emitting device, and the second pixel circuit is connected to the second light emitting device to drive the second light emitting device to emit light.
  • the base substrate 101 further includes a non-display area, and the second pixel circuit is located in the non-display area.
  • the second light-emitting device includes a second anode 109 , a cathode 105 and a second organic light-emitting layer 110 located between the second anode 109 and the cathode 105 , wherein the second anode 109 is located on the second side of the base substrate 101 . display area.
  • the second pixel 113 may be further divided into a second red sub-pixel, a second green sub-pixel and a second blue sub-pixel, and the second red sub-pixel, the second green sub-pixel and the second blue sub-pixel may share a cathode 105, while the second organic light-emitting layer 110 includes a second red organic light-emitting layer 1101, a second green organic light-emitting layer 1102, and a second blue organic light-emitting layer 1103, and the second red sub-pixel consists of a second anode 109, a second red organic light-emitting layer
  • the light-emitting layer 1101 and the cathode 105 are formed, the second green sub-pixel is formed by the second anode 109, the second green organic light-emitting layer 1102 and the cathode 105, the second blue sub-pixel is formed by the second anode 109, the second blue organic light-emitting layer 1103 and the cathode 105 constitute.
  • a second reflective layer 107 is also disposed between the first pixel circuit and the base substrate 101.
  • the second pixel 113 emits light
  • a part of the light is directly emitted from the front of the display panel, while the other part of the light is emitted to the side of the base substrate 101 , and is reflected by the second reflective layer 107.
  • the resonant frequencies of the two parts of the light match, a light that is about 1.5 to 2 times stronger than the original emitted light can be generated and emitted from the front of the display panel.
  • This phenomenon is called The micro-cavity effect phenomenon of the display panel can significantly improve the light efficiency.
  • the second reflective layer 107 is made of a silver metal layer, and the first reflective layer 102 and the second reflective layer 107 can be made of the same layer and the same material.
  • the electrochromic layer 115 includes a plurality of electrochromic blocks, the electrochromic blocks are arranged in a one-to-one correspondence with the second pixels 113 , and each of the electrochromic blocks includes a first sub-block 1151 , The second sub-block 1152 and the third sub-block 1153, the second pixel 113 includes a first sub-pixel, a second sub-pixel and a third sub-pixel, the first sub-block 1151 is arranged corresponding to the first sub-pixel, so The second sub-block 1152 is arranged corresponding to the second sub-pixel, and the third sub-block 1153 is arranged corresponding to the third sub-pixel, wherein the first sub-pixel, the second sub-pixel and the third sub-pixel are respectively Corresponding to the above-mentioned second red sub-pixel, second green sub-pixel and second blue sub-pixel.
  • the first sub-block 1151 is colored the same color as the light emitted by the first sub-pixel, ie red
  • the second sub-block 1152 is colored with the light emitted by the first sub-pixel 1152
  • the light emitted by the second sub-pixel is the same color, that is, green
  • the third sub-block 1153 is colored in the same color as the light emitted by the third sub-pixel, that is, blue. Therefore, the light emitted by the second red sub-pixel, the second green sub-pixel and the second blue sub-pixel can pass through the corresponding first sub-block 1151, the second sub-block 1152 and the third sub-block 1153, Ensure the normal display effect of the display panel.
  • the electrochromic block will include the same number of sub-blocks as the number of sub-pixels of the second pixel 113 , and will be colored to match colors, which will not be described one by one in this application.
  • the electrochromic layer 115 further includes a first driving electrode 1154 and a second driving electrode 1155 , and the electrochromic block is disposed on the first driving electrode 1154 and the second driving electrode 1155 . Between the electrodes 1155, the first driving electrode 1154 and the second driving electrode 1155 are also connected to a driving voltage for controlling the electrochromic layer 115 to be in a colored state or a transparent state.
  • the first driving electrode 1154 and the second driving electrode 1155 are made of transparent metal oxide material, specifically, indium tin oxide (Indium tin oxide, ITO), indium zinc oxide (Indium Zinc Oxide, IZO) can be selected any of .
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • Using the transparent metal oxide material can increase the light transmitted through the second display area, thereby improving the shooting effect of the camera.
  • the pixel density of the first display area is greater than the pixel density of the second display area, that is, the first pixels arranged in the first display area
  • the pixel density of 112 is greater than the pixel density of the second pixels 113 arranged in the second display area.
  • the area of the opening area of at least some of the second pixels 112 is smaller than the area of the opening area of the first pixel 111.
  • the light transmission amount of the second display area is effectively increased without affecting the normal display effect of the display panel. Improved camera performance.
  • Another embodiment of the present application further provides an electronic device, the electronic device includes the display panel according to any one of the above embodiments, and further includes a camera, and the camera is located in the front of the second display area of the display panel. to the area.
  • the electronic device includes the display panel according to any one of the above embodiments, and further includes a camera, and the camera is located in the front of the second display area of the display panel. to the area.
  • the electronic device in this embodiment of the present application may be a mobile electronic device or a non-mobile electronic device.
  • the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palmtop computer, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (personal digital assistant).
  • assistant, PDA personal digital assistant
  • the non-mobile electronic device may be a personal computer (personal computer, PC), a television (television, TV), a teller machine or a self-service machine, etc., which are not specifically limited in the embodiments of the present application.

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Abstract

一种显示面板和电子设备，属于显示技术领域。显示面板，包括：衬底基板（101），包括第一显示区和第二显示区；多个第一像素（112）和多个第二像素（113），多个第一像素（112）位于第一显示区，第二像素（113）位于第二显示区；偏光层（114）和电致变色层（115），偏光层（114）位于第一像素（112）的背离衬底基板（101）的一侧，电致变色层（115）位于第二像素（113）的背离衬底基板（101）的一侧，电致变色层（115）可在着色态与透明态之间切换，以透过或反射光线。

Description

显示面板和电子设备
相关申请的交叉引用
本申请主张在2021年04月02日在中国提交的中国专利申请No.202110360268.6的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于显示技术领域，具体涉及一种显示面板和电子设备。
背景技术
近年来，随着全面屏的普及，屏幕占比不断提升，电子设备前表面留给摄像头和其它传感器的位置越来越有限。为了提升屏幕占比，屏下摄像头设计方案逐渐被采用。然而，现有的有机发光二极管(Organic Light Emitted Diode，OLED)显示面板由于面板内电路的影响以及偏光片的设置，导致摄像头正对的显示区域的光线透过率不高，由此导致屏下摄像头在透过屏幕进行拍照时的效果不佳。
发明内容
本申请实施例的目的是提供一种显示面板和电子设备，能够解决现有技术中显示面板由于像素电路的影响以及偏光片的设置，导致摄像头正对的显示区域的光线透过率不高，由此导致屏下摄像头拍照效果不佳的问题。
为了解决上述技术问题，本申请是这样实现的：
第一方面，本申请实施例提供了一种显示面板，包括：
衬底基板，包括第一显示区和第二显示区，所述第一显示区至少部分包围所述第二显示区；
多个第一像素和多个第二像素，多个所述第一像素位于所述第一显示区，所述第二像素位于所述第二显示区；
偏光层和电致变色层，所述偏光片位于所述第一像素的背离所述衬底基 板的一侧，所述电致变色层位于所述第二像素的背离所述衬底基板的一侧，所述第一像素在所述衬底基板上的正投影落在所述偏光层在所述衬底基板上的正投影内，所述第二像素在所述衬底基板上的正投影落在所述电致变色层在所述衬底基板上的正投影内，且所述第二像素在所述衬底基板上的正投影与所述偏光层在所述衬底基板上的正投影不重叠，所述电致变色层可在着色态与透明态之间切换，以透过或反射光线。
可选的，所述显示面板还包括透明材料层，所述透明材料层与所述偏光层同层设置，所述透明材料层位于所述电致变色层的远离所述衬底基板的一侧，所述偏光层上开设有开口，所述透明材料层设置于所述开口内。
可选的，所述偏光层与所述电致变色层同层设置，所述偏光层上开设有开口，所述电致变色层设置于所述开口内。
可选的，所述电致变色层包括多个电致变色块，所述电致变色块与所述第二像素一一对应设置，每一所述电致变色块包括第一子块、第二子块和第三子块，所述第二像素包括第一子像素、第二子像素和第三子像素，所述第一子块与所述第一子像素对应设置，所述第二子块与所述第二子像素对应设置，所述第三子块与所述第三子像素对应设置，在所述电致变色层处于着色态的情况下，所述第一子块着色为与所述第一子像素发出的光相同的颜色，所述第二子块着色为与所述第二子像素发出的光相同的颜色，所述第三子块着色为与所述第三子像素发出的光相同的颜色。
可选的，所述电致变色层还包括第一驱动电极和第二驱动电极，所述电致变色块设置于所述第一驱动电极和所述第二驱动电极之间，所述第一驱动电极和所述第二驱动电极采用透明金属氧化物材料制作。
可选的，所述透明金属氧化物材料为ITO材料、IZO材料中的任一者。
可选的，所述第一像素包括第一像素电路和第一发光器件，所述第一像素电路与所述第一发光器件连接，所述第二像素包括第二像素电路和第二发光器件，所述第二像素电路与所述第二发光器件连接，所述衬底基板还包括非显示区，所述第二像素电路位于所述非显示区。
可选的，所述第一显示区的像素密度大于所述第二显示区的像素密度。
可选的，至少部分所述第二像素的开口区面积小于所述第一像素的开口区面积。
第二方面，本申请实施例提供了一种电子设备，该电子设备包括如第一方面所述的显示面板，还包括摄像头，所述摄像头位于所述显示面板的第二显示区的正对区域。
在本申请实施例中，通过用电致变色层替代摄像头正对的第二显示区的偏光层，在不影响显示面板正常显示效果的情况下，有效增加了第二显示区的光线透过量，提升了摄像头的拍照效果。
附图说明
图1为本申请实施例提供的一种显示面板的层叠结构示意图之一；
图2为本申请实施例提供的一种显示面板的层叠结构示意图之二；
图3为本申请实施例提供的显示面板的像素排布示意图；
图4为本申请实施例提供的电致变色层的结构示意图。
具体实施方式
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，本领域普通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。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”等所区分的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”， 一般表示前后关联对象是一种“或”的关系。
下面结合附图，通过具体的实施例及其应用场景对本申请实施例提供的显示面板和电子设备进行详细地说明。
请参考图1至图4，图1为本申请实施例提供的一种显示面板的层叠结构示意图之一，图2为本申请实施例提供的一种显示面板的层叠结构示意图之二，图3为本申请实施例提供的显示面板的像素排布示意图，图4为本申请实施例提供的电致变色层的结构示意图。如图1至图4所示，本申请实施例提供的显示面板应用于电子设备，所述显示面板包括衬底基板101，衬底基板101包括第一显示区和第二显示区，所述第一显示区至少部分包围所述第二显示区，第二显示区可以与电子设备的摄像头111正对设置，所述显示面板还包括多个第一像素112和多个第二像素113，其中，多个所述第一像素112位于衬底基板101上的第一显示区，多个所述第一像素112可以呈阵列分布，多个所述第二像素113位于衬底基板101上的第二显示区，多个所述第二像素113可以呈阵列分布。
所述显示面板还包括偏光层114和电致变色层115，其中，偏光层114位于第一像素112的背离衬底基板101的一侧，电致变色层115位于第二像素113的背离衬底基板101的一侧，第一像素112在衬底基板101上的正投影落在偏光层114在衬底基板101上的正投影内，第二像素113在衬底基板101上的正投影落在电致变色层115在衬底基板101上的正投影内，并且，第二像素113在衬底基板101上的正投影与偏光层114在衬底基板101上的正投影不重叠，也就是说，第二像素113所对应的区域不设置偏光层114，而是利用电致变色层115替代。偏光层114可以对外界的环境光起到反射作用，避免环境光对第一像素112发出的光造成干扰而影响第一显示区的正常显示；而电致变色层115可在着色态与透明态之间切换，可以透过或反射光线，具体来说，电致变色层115采用电致变色材料制作，电致变色材料的光学属性(反射率、透过率、吸收率等)会在外加电场的作用下发生稳定、可逆的颜色变化，因此本申请实施例中的电致变色层115可在着色态与透明态之间切 换，具体的，在电致变色层115处于着色态的情况下，电致变色层115可以反射或透过与其颜色相同的光线，而其他颜色的光线则被吸收，在电致变色层115处于透明态的情况下，电致变色层115可以透过所有照射到其上的光线。
由于在第二显示区没有设置偏光层114，为了反射外界的环境光线，避免环境光对第二像素113发出的光造成干扰而影响第二显示区的正常显示，在将电子设备的摄像头111设置于所述显示面板的第二显示区的正对区域的情况下，若显示面板需要正常显示画面，则可以控制电致变色层115处于着色态，着色为与第二像素113发出的光相同的颜色，从而第二显示区中的第二像素113发光时可以穿过电致变色层115，继而从显示面板的正面射出，从而确保第二显示区的显示效果，而外界的环境光只要与电致变色层115的颜色不一致，则被吸收，从而避免外界环境光的影响；而在需要采用摄像头111进行拍照时，则可以控制电致变色层115处于透明态，从显示面板入射的环境光线将透过电致变色层115照射到摄像头111上，从而加大外界光线的透过率，继而提升屏下摄像头的拍照效果，由于第二显示区对应的区域没有设置偏光层114，因此不会被偏光层114阻挡外界环境光由第二显示区入射到摄像头111中，从而极大提高了摄像头111的进光量。具体实施本申请时，可以提升越30％的进光量，将原有的25％的进光量提升至55％，从而提升摄像头的拍照效果。
如图1所示，本申请的一些实施例中，所述显示面板还包括透明材料层，116，透明材料层116与偏光层114同层设置，透明材料层116位于电致变色层115的远离衬底基板101的一侧，偏光层114上开设有开口，透明材料层116即设置于所述开口内，透明材料层116对光线的透过率影响较小，可以忽略，透明材料层116可以采用透明材料制作，具体可以选用高分子胶水、树脂、透明聚酰亚胺等材料。也就是说，第二显示区对应的区域的偏光层114镂空，并用透明材料层116替代，并在透明材料层116与第二像素113之间设置电致变色层115，利用电致变色层115对外界环境光进行反射。
如图2所示，在本申请的另一些实施例中，偏光层114与电致变色层115同层设置，偏光层114上开设有开口，电致变色层115即设置于所述开口内。也就是说，第二显示区对应的区域的偏光片114镂空，并直接用电致变色层115进行替代，利用电致变色层115对外界环境光进行反射，这样设置可以减薄显示面板的厚度。
本申请的一些实施例中，第一像素112包括第一像素电路和第一发光器件，所述第一像素电路与所述第一发光器件连接，以驱动第一发光器件发光，第一像素电路和第一发光器件均位于衬底基板101的第一显示区，具体的，第一像素电路位于衬底基板101的第一显示区，而第一发光器件则位于第一像素电路的背离衬底基板101的一侧。可选的，第一发光器件1122包括第一阳极103、阴极105以及位于第一阳极103和阴极105之间的第一有机发光层104。其中，第一像素112又可以划分为第一红色子像素、第一绿色子像素和第一蓝色子像素，所述第一红色子像素、第一绿色子像素和第一蓝色子像素可以共用阴极105，而第一有机发光层104包括第一红色有机发光层1041、第一绿色有机发光层1042和第一蓝色有机发光层1043，第一红色子像素由第一阳极103、第一红色有机发光层1041和阴极105构成，第一绿色子像素由第一阳极103、第一绿色有机发光层1042和阴极105构成，第一蓝色子像素由第一阳极103、第一蓝色有机发光层1043和阴极105构成。在第一阳极103的靠近衬底基板101的一侧设置有像素电路层1120，像素电路层1120中包括多个第一像素电路。在第一像素电路和衬底基板101之间还设置有第一反射层102，第一像素112发光时，一部分光线直接从显示面板正面出射，而另一部分光线则射向衬底基板101一侧，并被第一反射层102反射，当两部分光的共振频率相匹配时，可以产生比原始的发射光强约1.5～2倍的光线，并从显示面板正面出射，这种现象称之为显示面板的微腔效应现象，可以显著提高光效率，可选的，第一反射层102采用银金属层。
本申请的另一些实施例中，第二像素113包括第二像素电路和第二发光器件，所述第二像素电路与所述第二发光器件连接，以驱动第二发光器件发 光。衬底基板101还包括非显示区，所述第二像素电路位于所述非显示区。通过将第二像素113的第二像素电路与第二发光器件分离，也即，仅将第二发光器件设置在第二显示区，而第二像素电路则设置于非显示区，从而避免第二像素电路对第二显示区透过的光线的遮挡和反射，以提高与第二显示区正对的摄像头的拍摄效果。可选的，第二发光器件包括第二阳极109、阴极105以及位于第二阳极109和阴极105之间的第二有机发光层110，其中，第二阳极109即位于衬底基板101的第二显示区。第二像素113又可以划分为第二红色子像素、第二绿色子像素和第二蓝色子像素，所述第二红色子像素、第二绿色子像素和第二蓝色子像素可以共用阴极105，而第二有机发光层110包括第二红色有机发光层1101、第二绿色有机发光层1102和第二蓝色有机发光层1103，第二红色子像素由第二阳极109、第二红色有机发光层1101和阴极105构成，第二绿色子像素由第二阳极109、第二绿色有机发光层1102和阴极105构成，第二蓝色子像素由第二阳极109、第二蓝色有机发光层1103和阴极105构成。在第一像素电路和衬底基板101之间还设置有第二反射层107，第二像素113发光时，一部分光线直接从显示面板正面出射，而另一部分光线则射向衬底基板101一侧，并被第二反射层107反射，当两部分光的共振频率相匹配时，可以产生比原始的发射光强约1.5～2倍的光线，并从显示面板正面出射，这种现象称之为显示面板的微腔效应现象，可以显著提高光效率，可选的，第二反射层107采用银金属层，第一反射层102和第二反射层107可以同层同材料制作。
本申请实施例中，电致变色层115包括多个电致变色块，所述电致变色块与第二像素113一一对应设置，每一所述电致变色块包括第一子块1151、第二子块1152和第三子块1153，第二像素113包括第一子像素、第二子像素和第三子像素，所述第一子块1151与所述第一子像素对应设置，所述第二子块1152与所述第二子像素对应设置，所述第三子块1153与所述第三子像素对应设置，其中，第一子像素、第二子像素和第三子像素分别对应于上述的第二红色子像素、第二绿色子像素和第二蓝色子像素。在电致变色层114处 于着色态的情况下，第一子块1151着色为与所述第一子像素发出的光相同的颜色，也即红色，所述第二子块1152着色为与所述第二子像素发出的光相同的颜色，也即绿色，所述第三子块1153着色为与所述第三子像素发出的光相同的颜色，也即蓝色。从而使得第二红色子像素、第二绿色子像素和第二蓝色子像素各自发出的光可以透过与之对应设置的第一子块1151、第二子块1152和第三子块1153，确保显示面板的正常显示效果。当然，上述举例了显示面板中的一种经典红绿蓝(Red Green Blue，RGB)像素排布方式，实际上第二像素113还可以采用拜尔滤色镜(Red Green Blue Green，RGBG)等像素排布方式，由此所述电致变色块将包括与第二像素113的子像素的数量相同的子块，并分别着色为与之相匹配的颜色，本申请不再一一举例介绍。
如图4所示，本申请的一些实施例中，电致变色层115还包括第一驱动电极1154和第二驱动电极1155，所述电致变色块设置于第一驱动电极1154和第二驱动电极1155之间，第一驱动电极1154和第二驱动电极1155还与驱动电压连接，用于控制电致变色层115处于着色态或者透明态。其中，所述第一驱动电极1154和所述第二驱动电极1155采用透明金属氧化物材料制作，具体可以选用氧化铟锡(Indium tin oxide，ITO)、氧化铟锌(Indium Zinc Oxide，IZO)中的任一者。采用透明金属氧化物材料可以增加第二显示区透过的光线，从而提升摄像头的拍摄效果。
如图3所示，本申请的一些实施例中，所述第一显示区的像素密度大于所述第二显示区的像素密度，也就是说，在布设于第一显示区中的第一像素112的像素密度大于布设于第二显示区中的第二像素113的像素密度。通过减小第二显示区的像素密度，可以提升第二显示区的光线透过率，从而提高摄像头111的拍摄效果。可选的，至少部分第二像素112的开口区面积小于第一像素111的开口区面积，通过缩小第二显示区中的第二像素112的设计尺寸，可以提升第二显示区的光线透过率，从而提高摄像头111的拍摄效果。
在本申请实施例中，通过用电致变色层替代摄像头正对的第二显示区的偏光层，在不影响显示面板正常显示效果的情况下，有效增加了第二显示区 的光线透过量，提升了摄像头的拍照效果。
本申请另一方面实施例还提供了一种电子设备，所述电子设备包括如上述任一项实施例所述的显示面板，还包括摄像头，摄像头位于所述显示面板的第二显示区的正对区域。通过用电致变色层替代摄像头正对的第二显示区的偏光层，在不影响显示面板正常显示效果的情况下，有效增加了第二显示区的光线透过量，提升了摄像头的拍照效果。
本申请实施例中的电子设备可以是移动电子设备，也可以为非移动电子设备。示例性的，移动电子设备可以为手机、平板电脑、笔记本电脑、掌上电脑、车载电子设备、可穿戴设备、超级移动个人计算机(ultra-mobile personal computer，UMPC)、上网本或者个人数字助理(personal digital assistant，PDA)等，非移动电子设备可以为个人计算机(personal computer，PC)、电视机(television，TV)、柜员机或者自助机等，本申请实施例不作具体限定。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (10)

  1. 一种显示面板，包括：
    衬底基板，包括第一显示区和第二显示区，所述第一显示区至少部分包围所述第二显示区；
    多个第一像素和多个第二像素，多个所述第一像素位于所述第一显示区，所述第二像素位于所述第二显示区；
    偏光层和电致变色层，所述偏光片位于所述第一像素的背离所述衬底基板的一侧，所述电致变色层位于所述第二像素的背离所述衬底基板的一侧，所述第一像素在所述衬底基板上的正投影落在所述偏光层在所述衬底基板上的正投影内，所述第二像素在所述衬底基板上的正投影落在所述电致变色层在所述衬底基板上的正投影内，且所述第二像素在所述衬底基板上的正投影与所述偏光层在所述衬底基板上的正投影不重叠，所述电致变色层可在着色态与透明态之间切换，以透过或反射光线。
  2. 根据权利要求1所述的显示面板，其中，还包括透明材料层，所述透明材料层与所述偏光层同层设置，所述透明材料层位于所述电致变色层的远离所述衬底基板的一侧，所述偏光层上开设有开口，所述透明材料层设置于所述开口内。
  3. 根据权利要求1所述的显示面板，其中，所述偏光层与所述电致变色层同层设置，所述偏光层上开设有开口，所述电致变色层设置于所述开口内。
  4. 根据权利要求1所述的显示面板，其中，所述电致变色层包括多个电致变色块，所述电致变色块与所述第二像素一一对应设置，每一所述电致变色块包括第一子块、第二子块和第三子块，所述第二像素包括第一子像素、第二子像素和第三子像素，所述第一子块与所述第一子像素对应设置，所述第二子块与所述第二子像素对应设置，所述第三子块与所述第三子像素对应设置，在所述电致变色层处于着色态的情况下，所述第一子块着色为与所述第一子像素发出的光相同的颜色，所述第二子块着色为与所述第二子像素发 出的光相同的颜色，所述第三子块着色为与所述第三子像素发出的光相同的颜色。
  5. 根据权利要求4所述的显示面板，其中，所述电致变色层还包括第一驱动电极和第二驱动电极，所述电致变色块设置于所述第一驱动电极和所述第二驱动电极之间，所述第一驱动电极和所述第二驱动电极采用透明金属氧化物材料制作。
  6. 根据权利要求5所述的显示面板，其中，所述透明金属氧化物材料为ITO材料、IZO材料中的任一者。
  7. 根据权利要求1所述的显示面板，其中，所述第一像素包括第一像素电路和第一发光器件，所述第一像素电路与所述第一发光器件连接，所述第二像素包括第二像素电路和第二发光器件，所述第二像素电路与所述第二发光器件连接，所述衬底基板还包括非显示区，所述第二像素电路位于所述非显示区。
  8. 根据权利要求1所述的显示面板，其中，所述第一显示区的像素密度大于所述第二显示区的像素密度。
  9. 根据权利要求1所述的显示面板，其中，至少部分所述第二像素的开口区面积小于所述第一像素的开口区面积。
  10. 一种电子设备，包括如权利要求1-9任一项所述的显示面板，还包括摄像头，所述摄像头位于所述显示面板的第二显示区的正对区域。
PCT/CN2022/084055 2021-04-02 2022-03-30 显示面板和电子设备 WO2022206834A1 (zh)

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