WO2022028469A1 - 电子设备 - Google Patents

电子设备 Download PDF

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Publication number
WO2022028469A1
WO2022028469A1 PCT/CN2021/110516 CN2021110516W WO2022028469A1 WO 2022028469 A1 WO2022028469 A1 WO 2022028469A1 CN 2021110516 W CN2021110516 W CN 2021110516W WO 2022028469 A1 WO2022028469 A1 WO 2022028469A1
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WIPO (PCT)
Prior art keywords
light
filter layer
photosensitive unit
electronic device
wave plate
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PCT/CN2021/110516
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English (en)
French (fr)
Inventor
徐海东
段俊杰
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Publication of WO2022028469A1 publication Critical patent/WO2022028469A1/zh
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components

Definitions

  • the present application belongs to the technical field of electronic devices, and specifically relates to an electronic device.
  • the front sensors on mobile phones include cameras, distance sensors, photosensitive sensors, pickups, etc. It is necessary to consider how to design them to ensure that they can continue to function. At present, there are some telescopic camera solutions. Sensing scheme and micro-slit technology scheme, etc.
  • off-screen technology is an important development trend, such as off-screen fingerprints, off-screen laser focusing, off-screen photosensitivity, etc.
  • Most of these sensors are optical, and the organic light-emitting diode (Organic Light-Emitting Diode, OLED) has a certain transmittance, and theoretically, the light sensor can be placed under the screen for photoelectric detection.
  • OLED Organic Light-Emitting Diode
  • the inventor found that there are at least the following problems in the prior art: the self-luminescence of the OLED screen will interfere with the detection performance of the sensor. If the influence of the self-luminescence of the OLED cannot be effectively filtered out, the detection performance of the optical sensor under the screen will be seriously affected.
  • the purpose of the embodiments of the present application is to provide an electronic device, which can solve the problem that it is difficult to accurately separate and measure the ambient light and the light emitted by the OLED in the related art.
  • an electronic device including:
  • a first photosensitive unit and a second photosensitive unit wherein a second filter layer is provided between the first filter layer and the first photosensitive unit;
  • the light source is located between the first filter layer and the second filter layer;
  • the light emitted by the light source is directly transmitted to the second photosensitive unit, the light emitted by the light source is transmitted to the first photosensitive unit through the second filter layer, and the ambient light is transmitted through the first filter layer.
  • the light layer is then transmitted to the second filter layer and the second photosensitive unit, and the ambient light is blocked by the first filter layer and the second filter layer.
  • the first filter layer and the second filter layer by arranging the first filter layer and the second filter layer, the light emitted by the light source is transmitted to the first photosensitive unit and the second photosensitive unit, and the ambient light is only transmitted to the second photosensitive unit, thereby passing through
  • the first photosensitive unit and the second photosensitive unit can respectively obtain the light energy emitted by the light source of the electronic device and the light energy of the ambient light, so as to realize the separation of the two kinds of light, and then can achieve accurate separation and measurement of the ambient light and the light of the OLED screen. the goal of.
  • Fig. 1 is the filter schematic diagram of OLED filter layer
  • FIG. 3 is a second schematic structural diagram of an electronic device according to an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a second filter layer in an electronic device according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of filtering of the first filter layer and the second filter layer in the embodiment of the present application.
  • FIG. 6 is one of the schematic diagrams of the positions of the second linear polarizer and the second wave plate in the embodiment of the present application;
  • FIG. 7 is the second schematic diagram of the positions of the second linear polarizer and the second wave plate in the 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.
  • Objects are usually of one type, and the number of objects is not limited.
  • the first object may be one or multiple.
  • “and/or” in the description and the claims indicates at least one of the connected objects, and the character “/" generally indicates that the associated objects are in an "or” relationship.
  • the OLED is first described as follows.
  • the role of the OLED filter layer the OLED display panel itself is a self-luminous display mode, but when the external light source is reflected on the metal electrode of the OLED, it will cause reflected light interference on the surface of the OLED display screen and reduce the contrast. .
  • the basic structure of the OLED filter layer is divided into a polarizing part (polarizer) and a 1/4 ⁇ functional compensation part (1/4 ⁇ wave plate) to block the reflection of external light to ensure that the screen maintains a high contrast ratio.
  • the function of the OLED filter layer is to prevent ambient light from reflecting and escaping after entering the screen, so as to reduce the effect of ambient light on the contrast ratio.
  • This process is shown in Figure 1.
  • the ambient light is uniformly polarized light 1. After passing through the linear polarizer, it becomes linearly polarized light 2. After going through the 1/4 wave plate, it becomes circularly polarized light 3; After the layer is reflected, the rotation direction of the circular polarization is changed 4, and after passing through the original 1/4 wave plate again, it becomes a linearly polarized light 5 that is perpendicular to the polarization direction of the polarizer, so it cannot pass through the polarizer, so there is no Light escapes.
  • the OLED filter is inherent, and it also changes the polarization characteristics of the light entering the OLED.
  • the OLED screen still has a small portion of ambient light that passes through the OLED screen and enters the screen.
  • the photoelectric sensor under the screen realizes the relevant function by detecting this part of the light energy.
  • the embodiment of the present application provides an electronic device to solve the problem of self-luminescence of the OLED screen. Problems that interfere with the detection performance of the sensor.
  • an embodiment of the present application provides an electronic device, including:
  • the light source 205 is located between the first filter layer 201 and the second filter layer 204;
  • the light emitted by the light source 205 is directly transmitted to the second photosensitive unit 203, and the light emitted by the light source 205 is transmitted to the first photosensitive unit 202 through the second filter layer 204, and the ambient light passes through
  • the first filter layer 201 is then transmitted to the second filter layer 204 and the second photosensitive unit 203, and the ambient light is blocked by the first filter layer 201 and the second filter layer 204 Block.
  • the ambient light (shown by the solid arrow in FIG. 2 ) is uniformly polarized light, which becomes circularly polarized light after passing through the first filter layer 201 , and then incident on the second filter layer 204 and the second filter layer 204 .
  • the circularly polarized light is blocked and cannot be incident to the first photosensitive unit 202 .
  • the light emitted by the light source 205 (shown by the dashed arrow in FIG. 2 ) is uniformly polarized light.
  • the light emitted by the light source 205 is incident on the second filter layer 204 and then becomes linearly polarized light and is incident on the first photosensitive unit 202.
  • the uniformly polarized light emitted by the light source 205 is incident on the second photosensitive unit 203 .
  • the light emitted by the light source is transmitted to the first photosensitive unit and the second photosensitive unit, and the ambient light is only transmitted to the second photosensitive unit, thereby
  • the first photosensitive unit and the second photosensitive unit the light energy emitted by the light source of the electronic device and the light energy of the ambient light can be obtained respectively, so as to realize the separation of the two kinds of light, and then the ambient light and the light of the OLED screen can be accurately separated. purpose of measurement.
  • the light source 205 is an organic light emitting diode OLED.
  • the embodiment of the present application can separate ambient light and light emitted by the OLED itself, thereby solving the problem that the self-luminescence of the OLED screen will interfere with the detection performance of the sensor, so that the performance of the photoelectric sensor under the screen is greatly improved. improve.
  • the first filter layer 201 includes a first linear polarizer 2011 and a first wave plate 2012;
  • the first wave plate 2012 is located between the first linear polarizer 2011 and the light source 205 .
  • the above-mentioned first wave plate is a ⁇ /4 wave plate.
  • the ambient light (shown by the solid arrow in FIG. 3 ) is uniformly polarized light, which becomes linearly polarized light after passing through the first linear polarizer 2011 , and then becomes circularly polarized light after passing through the first wave plate 2012 , and then the circularly polarized light Light penetrates the OLED layer without changing the polarization characteristics, and then enters the second filter layer 204 and the second photosensitive unit 203 . That is, what the second photosensitive unit 203 detects is the light energy of the light source and the light energy of the ambient light.
  • the light energy of the above-mentioned light source hardly attenuates after reaching the second photosensitive unit, that is, 100% reaches the second photosensitive unit, and the light energy of ambient light attenuates approximately 95% after reaching the second photosensitive unit.
  • the first filter layer can prevent ambient light from being reflected after entering the OLED screen, so as to achieve the purpose of reducing the effect of ambient light on the contrast ratio.
  • the second filter layer 204 includes a second wave plate 2041 and a second linear polarizer 2042;
  • the second wave plate 2041 is located between the second linear polarizer 2042 and the light source 205 .
  • the second wave plate 2041 is a 1/4 wave plate.
  • the ambient light is circularly polarized light after passing through the light source 205
  • the circularly polarized light is linearly polarized after passing through the second wave plate 2041
  • the polarization state of the linearly polarized light is perpendicular to the polarization state of the second linear polarizer , therefore, the linearly polarized light cannot pass through the second linear polarizer and is completely blocked, while the light emitted by the light source does not change the uniform polarization state after passing through the second wave plate 2041, and then passes through the second linear polarizer to become linearly polarized light
  • the light energy value of this linearly polarized light is approximately 45% attenuated.
  • the light energy emitted by the above-mentioned light source and the light energy of the ambient light can be obtained respectively, so as to realize the separation of the two kinds of light.
  • the polarization axis 20421 of the second linear polarizer 2042 is connected to the second wave plate.
  • the angle between the fast axis 20411 of the 2041 needs to be specially set.
  • the angle between the polarization axis 20421 of the second linear polarizer 2042 and the fast axis 20411 of the second wave plate 2041 is 45 degree.
  • the specific processing process of the polarization state is shown in Figure 5, and finally the extinction effect of all light cutoffs is realized.
  • the polarization characteristics of ambient light are mainly changed by the phase retardation technique, but this phase retardation process has no effect on the light emitted by the light source (such as OLED light).
  • the polarization axis of the second linear polarizer in a first angle state, and the second linear polarizer is in a state of a first angle.
  • the polarization axis 20421 of the second linear polarizer 2042 is rotated 45 degrees counterclockwise to coincide with the fast axis 20411 of the second wave plate 2041 .
  • the polarization axis of the second linear polarizer is in a second angle state.
  • the polarization axis 20421 of the second linear polarizer 2042 is rotated 45 degrees clockwise and coincides with the fast axis 20411 of the second wave plate 2041 .
  • the angle between the polarization axis of the second linear polarizer and the fast axis of the second wave plate it is ensured that the light emitted by the above-mentioned light source is transmitted to the first photosensitive unit and the second photosensitive unit, and the ambient light is only transmitted to the The second photosensitive unit.
  • both the first photosensitive unit and the second photosensitive unit are photosensitive sensors.
  • the second photosensitive unit can then obtain the energy value of the light source and the energy value of the ambient light according to the energy values detected by the two photosensitive sensors, respectively.
  • the illuminance value of the first photosensitive unit is E1, which is composed of the ambient light E1e reaching the first photosensitive unit and the OLED self-luminescence E1o .
  • the illuminance value of the second photosensitive unit is E2, which is determined by the light reaching the second photosensitive unit.
  • Ambient light E 2e and OLED self-luminous E 2o constitute.
  • E1 and E2 are obtained by sensor reading, and E e and E o are the desired data. At this point we can get E e and E o by a simple relationship:
  • the electronic device of the embodiment of the present application further includes:
  • the transparent layer 207 is disposed on the surface of the first filter layer 201 .
  • the light-transmitting layer may be a glass cover plate.
  • the electronic device further includes: a printed circuit board (Printed Circuit Board, PCB), wherein the first photosensitive unit and the second photosensitive unit are both arranged on the printed circuit board.
  • a printed circuit board (Printed Circuit Board, PCB)
  • PCB printed Circuit Board
  • the light emitted by the light source is transmitted to the first photosensitive unit and the second photosensitive unit, and the ambient light is only transmitted to the second photosensitive unit, thereby
  • the first photosensitive unit and the second photosensitive unit the light energy emitted by the light source of the electronic device and the light energy of the ambient light can be obtained respectively, and the separation of the two kinds of light can be realized, and then the ambient light and the light of the OLED screen can be accurately separated. purpose of measurement.
  • the polarization state of the photoelectric sensor under the screen is restored or changed (that is, the photoelectric device is equipped with a specially designed polarizing film group layer),
  • the polarization state of the ambient light to be detected and the polarization state of the OLED light are made the same or perpendicular to each other, so as to realize the separation of the two kinds of light.
  • the embodiments of the present application are not limited to the application of photosensitive under the screen.
  • the photoelectric sensing under the screen applies the wave plate and linear polarizer methods disclosed in the embodiments of the present application, it is applicable; for example, the laser under the screen is applicable. Focusing, off-screen spectral measurement, off-screen fingerprint recognition, etc., off-screen technology based on photoelectric detection, etc.

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Abstract

本申请公开了一种电子设备，属于电子设备技术领域。本申请实施例的电子设备，包括：第一滤光层；第一光敏单元和第二光敏单元，第一滤光层和第一光敏单元之间设置有第二滤光层；光源，光源位于所述第一滤光层和第二滤光层之间；光源发出的光线直接传送至第二光敏单元，且光源发出的光经过所述第二滤光层传输至所述第一光敏单元，环境光经过所述第一滤光层后传输至第二滤光层和第二光敏单元，且环境光被第一滤光层和第二滤光层阻挡。

Description

电子设备
相关申请的交叉引用
本申请主张在2020年8月5日在中国提交的中国专利申请号No.202010778169.5的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于电子设备技术领域，具体涉及一种电子设备。
背景技术
随着全面屏在手机产品上应用的普及，手机上的前置传感器包括摄像头，距离传感器，光敏传感器，拾音器等，需考虑如何设计以保证能继续发挥作用，目前出现了一些伸缩摄像头方案，屏下传感方案以及微缝技术方案等。
其中，屏下技术是一个较重要的发展趋势，比如屏下指纹，屏下激光对焦，屏下光敏等。大多数这些传感器都是光学型的，并且有机发光二极管(Organic Light-Emitting Diode，OLED)有一定的透过率，理论上可以将光传感器放置于屏下，进行光电检测。在实现本申请过程中，发明人发现现有技术中至少存在如下问题：OLED屏的自发光会干扰传感器的探测性能。如果不能有效的滤除OLED自发光的影响，则会严重影响屏下光学传感器的探测性能，然而相关技术中难以准确地进对环境光和OLED发出的光进行分离测量。
发明内容
本申请实施例的目的是提供一种电子设备，能够解决相关技术难以准确地对环境光和OLED发出的光进行分离测量的问题。
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电子设备，包括：
第一滤光层；
第一光敏单元和第二光敏单元，其中，所述第一滤光层和所述第一光敏 单元之间设置有第二滤光层；
光源，所述光源位于所述第一滤光层和所述第二滤光层之间；
其中，所述光源发出的光线直接传送至所述第二光敏单元，且所述光源发出的光经过所述第二滤光层传输至所述第一光敏单元，环境光经过所述第一滤光层后传输至所述第二滤光层和所述第二光敏单元，且所述环境光被所述第一滤光层和所述第二滤光层阻挡。
在本申请实施例中，通过设置第一滤光层和第二滤光层，使得光源发出的光线传输到第一光敏单元和第二光敏单元，环境光仅传输到第二光敏单元，从而通过第一光敏单元和第二光敏单元可以分别得到电子设备的光源发出的光能和环境光的光能，实现两种光的分离，进而可达到准确地对环境光和OLED屏的光线进行分离测量的目的。
附图说明
图1是OLED滤光层的滤光示意图；
图2是本申请实施例的电子设备的结构示意图之一；
图3是本申请实施例的电子设备的结构示意图之二；
图4是本申请实施例的电子设备中第二滤光层的结构示意图；
图5是本申请实施例中第一滤光层和第二滤光层的滤光示意图；
图6是本申请实施例中第二线偏振片与第二波片的位置示意图之一；
图7是本申请实施例中第二线偏振片与第二波片的位置示意图之二。
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。
为使本领域技术人员能够更好地了解本申请实施例的电子设备，先对OLED进行如下说明。
OLED滤光(filter)层的作用：OLED显示面板本身是自发光的显示模式，但是当外界光源照射到OLED的金属电极上反射回来时，会在OLED的显示屏表面造成反射光干扰，降低对比度。OLED filter层的基本结构分为偏光部分(偏光片)和1/4λ功能性补偿部分(1/4λ波片)，来阻隔外界光的反射，以确保屏幕保持较高的对比度。
OLED filter层的作用是为了让环境光进入屏幕之后不会反射逃逸出去，以实现减小环境光影响对比度的目的。这个过程如图1所示，环境光是均匀偏振的光①，经过线偏振片之后，变成线偏振特性②，再经历1/4波片之后，变成圆偏振光③；该光在OLED层反射之后，改变了圆偏振的旋转方向④，再次穿过原来的1/4波片后，变成和偏振片的偏振方向相垂直的线偏振光⑤，因此不能穿过偏振片，因此没有光线逃出。
对于OLED屏来说，OLED filter是固有存在，它也改变了进入OLED光的偏振特性。OLED屏除了反射及吸收环境光，仍有小部分环境光穿过OLED屏，进入屏下。屏下光电传感器正是通过探测该部分光能量实现相关的功能。
但是，直接在屏下放置光电类传感器，OLED屏的自发光也会被传感器接收，干扰传感器的探测性能，基于此，本申请实施例提供了一种电子设备，以解决OLED屏的自发光会干扰传感器的探测性能的问题。
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电子设备进行详细地说明。
如图2所示，本申请实施例提供了一种电子设备，包括：
第一滤光层201；
第一光敏单元202和第二光敏单元203，其中，所述第一滤光层201和所述第一光敏单元202之间设置有第二滤光层204；
光源205，所述光源205位于所述第一滤光层201和所述第二滤光层204之间；
其中，所述光源205发出的光线直接传送至所述第二光敏单元203，且所述光源205发出的光经过所述第二滤光层204传输至所述第一光敏单元202，环境光经过所述第一滤光层201后传输至所述第二滤光层204和所述第二光敏单元203，且所述环境光被所述第一滤光层201和所述第二滤光层204阻挡。
如图2所示，环境光(图2中实线箭头所示)为均匀偏振的光，经过第一滤光层201后变成圆偏振光，然后入射至第二滤光层204和第二光敏单元203，由于该第二滤光层的作用，该圆偏振光被阻挡未能入射至第一光敏单元202。光源205发出的光线(图2中虚线箭头所示)为均匀偏振的光，该光源205发出的光线入射至第二滤光层204后变为线偏振光入射至第一光敏单元202，同时，光源205发出的均匀偏振的光入射至第二光敏单元203。
本申请实施例的电子设备，通过设置第一滤光层和第二滤光层，使得光源发出的光线传输到第一光敏单元和第二光敏单元，环境光仅传输到第二光敏单元，从而通过第一光敏单元和第二光敏单元可以分别得到电子设备的光源发出的光能和环境光的光能，实现两种光的分离，进而可达到准确地对环境光和OLED屏的光线进行分离测量的目的。
进一步地，所述光源205为有机发光二极管OLED。
这里，在光源为OLED时，通过本申请实施例能够分离环境光和OLED自身发出的光，进而能够解决OLED屏的自发光会干扰传感器的探测性能的问题，使得屏下光电传感器的性能极大提高。
进一步地，如图3所示，所述第一滤光层201包括第一线偏振片2011和第一波片2012；
其中，所述第一波片2012位于所述第一线偏振片2011和所述光源205 之间。
具体的，上述第一波片为λ/4波片。环境光(图3中实线箭头所示)为均匀偏振的光，经过第一线偏振片2011后变成线偏振光，接着经过第一波片2012后变成圆偏振光，然后该圆偏振光穿透OLED层不改变偏振特性，然后入射至第二滤光层204和第二光敏单元203。即第二光敏单元203探测到的是上述光源的光能量和环境光的光能量。上述光源的光能量到达第二光敏单元后几乎未衰减，即100％到达第二光敏单元，环境光的光能量到达第二光敏单元后大概衰减95％。
通过该第一滤光层能够让环境光进入OLED屏之后不会反射出去，实现减小环境光影响对比度的目的。
进一步地，如图4所示，所述第二滤光层204包括第二波片2041和第二线偏振片2042；
所述第二波片2041位于所述第二线偏振片2042和所述光源205之间。
可选的，所述第二波片2041为1/4波片。如图4所示，环境光经过光源205后为圆偏振光，该圆偏振光经过第二波片2041后变成线偏振光，该线偏振光的偏振态与第二线偏振片的偏振态垂直，因此，该线偏振光无法通过第二线偏振片，被完全隔档，而光源发出的光线经过第二波片2041后不改变均匀偏振态，然后通过第二线偏振片，变成线偏振光，该线偏振光的光能值大概会衰减45％。
通过该第二滤光层与第一滤光层配合，可以分别得到上述光源发出的光能和环境光的光能，实现两种光的分离。
进一步地，为了保证上述光源发出的光线传输到第一光敏单元和第二光敏单元，环境光仅传输到第二光敏单元，所述第二线偏振片2042的偏振轴20421与所述第二波片2041的快轴20411之间的夹角需要特别设定，本申请实施例中，所述第二线偏振片2042的偏振轴20421与所述第二波片2041的快轴20411之间的夹角为45度。偏振态的具体处理过程如图5所示，最终实现所有光截止的消光效果。这里，主要通过相位延迟技术改变环境光的偏振 特性，但是此相位延迟过程对光源发出的光(如OLED光)不起作用。
进一步地，如图6所示，在环境光经过所述第一滤光层之后为右旋偏振光的情况下，所述第二线偏振片的偏振轴处于第一角度状态，在所述第二线偏振片的偏振轴处于第一角度状态的情况下，所述第二线偏振片2042的偏振轴20421逆时针转动45度后与所述第二波片2041的快轴20411重合。
进一步地，如图7所示，在环境光经过所述第一滤光层之后为左旋偏振光的情况下，所述第二线偏振片的偏振轴处于第二角度状态，在所述第二线偏振片的偏振轴处于第二角度状态的情况下，所述第二线偏振片2042的偏振轴20421顺时针转动45度后与所述第二波片2041的快轴20411重合。
这里，通过设定第二线偏振片的偏振轴和第二波片的快轴之间的夹角，以保证上述光源发出的光线传输到第一光敏单元和第二光敏单元，环境光仅传输到第二光敏单元。
进一步地，所述第一光敏单元和所述第二光敏单元均为光敏传感器。
这里，通过设定第二线偏振片的偏振轴和第二波片的快轴之间的夹角，以保证上述光源发出的光线传输到第一光敏单元和第二光敏单元，环境光仅传输到第二光敏单元，然后根据两个光敏传感器检测到的能量值可以分别得到上述光源的能量值和环境光的能量值。
假设上述光源发出的光为OLED光，记为E o，环境光，记为E e。其中，上述第一光敏单元和第二光敏单元的能量值如表1所示。
表1
Figure PCTCN2021110516-appb-000001
假设第一光敏单元的照度值为E1，由到达第一光敏单元的环境光E 1e和OLED自发光E 1o构成，同理，第二光敏单元的照度值为E2，由到达第二光 敏单元的环境光E 2e和OLED自发光E 2o构成。
E1和E2通过传感器读取获得，E e和E o是希望获得的数据。此时我们可以通过简单的关系得到E e和E o：
E 1＝E 1e+E 1O＝0+E O*45％；
E 2＝E 2e+E 2O＝E e*4％+E O*100％；
求解得到，
Figure PCTCN2021110516-appb-000002
进一步地，本申请实施例的电子设备，如图2所示，还包括：
透光层207，所述透光层207设置于所述第一滤光层201的表面。
具体的，该透光层可以为玻璃盖板。
进一步地，本申请实施例的电子设备，还包括：印制电路板(Printed Circuit Board，PCB)，上述第一光敏单元和上述第二光敏单元均设置在印制电路板上。
本申请实施例的电子设备，通过设置第一滤光层和第二滤光层，使得光源发出的光线传输到第一光敏单元和第二光敏单元，环境光仅传输到第二光敏单元，从而通过第一光敏单元和第二光敏单元可以分别得到电子设备的光源发出的光能和环境光的光能，实现两种光的分离，进而可达到准确地对环境光和OLED屏的光线进行分离测量的目的。
本申请实施例中，通过合理利用OLED屏固有的偏光膜(第一滤光层)，对屏下的光电传感器进行偏振态恢复或者改变(即给光电器件配置特殊设计的偏光膜组层)，使得待检测的环境光的偏振态及OLED光的偏振态一致或者互相垂直，以实现两种光的剥离。
本申请实施例，不限于在屏下光敏的应用，对于所有OLED屏来说，只要屏下光电传感应用了本申请实施例揭露的波片和线偏振片方法，均适用；比如屏下激光对焦，屏下光谱测量，屏下指纹识别等，基于光电检测的屏下技术等。
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. 一种电子设备，包括：
    第一滤光层；
    第一光敏单元和第二光敏单元，其中，所述第一滤光层和所述第一光敏单元之间设置有第二滤光层；
    光源，所述光源位于所述第一滤光层和所述第二滤光层之间；
    其中，所述光源发出的光线直接传送至所述第二光敏单元，且所述光源发出的光经过所述第二滤光层传输至所述第一光敏单元，环境光经过所述第一滤光层后传输至所述第二滤光层和所述第二光敏单元，且所述环境光被所述第一滤光层和所述第二滤光层阻挡。
  2. 根据权利要求1所述的电子设备，其中，所述光源为有机发光二极管OLED层。
  3. 根据权利要求1所述的电子设备，其中，所述第一滤光层包括第一线偏振片和第一波片；
    其中，所述第一波片位于所述第一线偏振片和所述光源之间。
  4. 根据权利要求3所述的电子设备，其中，所述第一波片为1/4波片。
  5. 根据权利要求1所述的电子设备，其中，所述第二滤光层包括第二波片和第二线偏振片；
    所述第二波片位于所述第二线偏振片和所述光源之间。
  6. 根据权利要求5所述的电子设备，其中，所述第二线偏振片的偏振轴与所述第二波片的快轴之间的夹角为45度。
  7. 根据权利要求6所述的电子设备，其中，在环境光经过所述第一滤光层之后为右旋偏振光的情况下，所述第二线偏振片的偏振轴处于第一角度状态；
    在环境光经过所述第一滤光层之后为左旋偏振光的情况下，所述第二线偏振片的偏振轴处于第二角度状态；
    在所述第二线偏振片的偏振轴处于第一角度状态的情况下，所述第二线偏振片的偏振轴逆时针转动45度后与所述第二波片的快轴重合；在所述第二 线偏振片的偏振轴处于第二角度状态的情况下，所述第二线偏振片的偏振轴顺时针转动45度后与所述第二波片的快轴重合。
  8. 根据权利要求1所述的电子设备，其中，所述第一光敏单元和所述第二光敏单元均为光敏传感器。
  9. 根据权利要求1所述的电子设备，其中，还包括：
    透光层，所述透光层设置于所述第一滤光层的表面。
  10. 根据权利要求1所述的电子设备，其中，还包括：
    印制电路板，所述第一光敏单元和所述第二光敏单元均设置于所述印制电路板上。
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107909922A (zh) * 2017-11-16 2018-04-13 维沃移动通信有限公司 一种移动终端
CN109696682A (zh) * 2017-10-23 2019-04-30 华为技术有限公司 光学检测组件和终端设备
US20190301932A1 (en) * 2018-04-03 2019-10-03 Microsoft Technology Licensing, Llc Color sensing ambient light sensor calibration
CN111337124A (zh) * 2020-04-20 2020-06-26 北京小米移动软件有限公司 终端设备及环境光检测方法
CN111366242A (zh) * 2020-05-27 2020-07-03 北京小米移动软件有限公司 环境光检测装置及终端设备
CN111917906A (zh) * 2020-08-05 2020-11-10 维沃移动通信有限公司 电子设备
CN112146758A (zh) * 2019-06-27 2020-12-29 北京小米移动软件有限公司 环境光检测装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010243647A (ja) * 2009-04-02 2010-10-28 Toppoly Optoelectronics Corp ディスプレイ装置及びこれを備える電子機器
US9612152B2 (en) * 2013-11-07 2017-04-04 Apple Inc. Ambient light sensor with internal light cancellation
CN114353937A (zh) * 2017-08-22 2022-04-15 华为技术有限公司 光传感器及终端设备
CN109036163B (zh) * 2018-08-31 2021-08-06 京东方科技集团股份有限公司 一种显示装置及其环境光检测方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109696682A (zh) * 2017-10-23 2019-04-30 华为技术有限公司 光学检测组件和终端设备
CN107909922A (zh) * 2017-11-16 2018-04-13 维沃移动通信有限公司 一种移动终端
US20190301932A1 (en) * 2018-04-03 2019-10-03 Microsoft Technology Licensing, Llc Color sensing ambient light sensor calibration
CN112146758A (zh) * 2019-06-27 2020-12-29 北京小米移动软件有限公司 环境光检测装置
CN111337124A (zh) * 2020-04-20 2020-06-26 北京小米移动软件有限公司 终端设备及环境光检测方法
CN111366242A (zh) * 2020-05-27 2020-07-03 北京小米移动软件有限公司 环境光检测装置及终端设备
CN111917906A (zh) * 2020-08-05 2020-11-10 维沃移动通信有限公司 电子设备

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