CN105644443B - 一种用于汽车的后视系统及汽车 - Google Patents

一种用于汽车的后视系统及汽车 Download PDF

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CN105644443B
CN105644443B CN201610125643.8A CN201610125643A CN105644443B CN 105644443 B CN105644443 B CN 105644443B CN 201610125643 A CN201610125643 A CN 201610125643A CN 105644443 B CN105644443 B CN 105644443B
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liquid crystal
crystal display
source module
light
backlight source
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CN105644443A (zh
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孙毅
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BOE Technology Group Co Ltd
Beijing BOE Chatani Electronics Co Ltd
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BOE Technology Group Co Ltd
Beijing BOE Chatani Electronics Co Ltd
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Priority to US15/503,651 priority patent/US10661715B2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/02—Rear-view mirror arrangements
    • B60R1/08—Rear-view mirror arrangements involving special optical features, e.g. avoiding blind spots, e.g. convex mirrors; Side-by-side associations of rear-view and other mirrors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
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    • B60R1/20—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/22—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles for viewing an area outside the vehicle, e.g. the exterior of the vehicle
    • B60R1/23—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles for viewing an area outside the vehicle, e.g. the exterior of the vehicle with a predetermined field of view
    • B60R1/26—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles for viewing an area outside the vehicle, e.g. the exterior of the vehicle with a predetermined field of view to the rear of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/698—Control of cameras or camera modules for achieving an enlarged field of view, e.g. panoramic image capture
    • H—ELECTRICITY
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    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/30—Transforming light or analogous information into electric information
    • H04N5/33—Transforming infrared radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/20—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of display used
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/80—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
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    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
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Abstract

本发明的实施例提供一种用于汽车的后视系统及汽车，涉及显示技术领域，可实现驾驶视野无盲区，并可切换成普通反光镜使用。该后视系统包括摄像装置以及液晶显示装置；所述摄像装置用于获取汽车侧后方的图像，所述液晶显示装置用于实时显示所述摄像装置获取的所述图像；其中，所述液晶显示装置包括背光源模组、液晶显示面板、以及设置在所述背光源模组和所述液晶显示面板之间的半透半反功能层；所述半透半反功能层用于在所述背光源模组开启时，透射所述背光源模组发出的光，在所述背光源模组关闭时，反射外界环境光。用于汽车。

Description

一种用于汽车的后视系统及汽车
技术领域
本发明涉及显示技术领域，尤其涉及一种用于汽车的后视系统及汽车。
背景技术
为了使驾驶员在行驶过程中能迅速有效的观察车辆侧后方，保证驾驶安全性，汽车上会安装后视镜，以方便倒车以及防止发生与后方的车辆相撞的事故。目前存在的问题在于，现有的汽车后视镜存在视野盲区，尤其是转弯的时候车辆视野盲区面积更加大，给驾驶安全带来了很大的隐患。
发明内容
本发明的实施例提供一种用于汽车的后视系统及汽车，可实现驾驶视野无盲区，并可切换成普通反光镜使用。
为达到上述目的，本发明的实施例采用如下技术方案：
一方面，提供一种用于汽车的后视系统，包括摄像装置以及液晶显示装置；所述摄像装置用于获取汽车侧后方的图像，所述液晶显示装置用于实时显示所述摄像装置获取的所述图像；其中，所述液晶显示装置包括背光源模组、液晶显示面板、以及设置在所述背光源模组和所述液晶显示面板之间的半透半反功能层；所述半透半反功能层用于在所述背光源模组开启时，透射所述背光源模组发出的光，在所述背光源模组关闭时，反射外界环境光。
优选的，所述后视系统还包括开关，所述开关用于控制所述背光源模组的开启和关闭。
优选的，所述液晶显示装置还包括设置在所述液晶显示面板靠近所述背光源模组的下偏光片、以及设置在所述液晶显示面板远离所述背光源模组的上偏光片；所述半透半反功能层包括多层膜反射式偏光片，所述多层膜反射式偏光片设置在所述背光源模组和所述下偏光片之间；所述多层膜反射式偏光片用于在所述背光源模组关闭时，与所述下偏光片复合，反射外界环境光。
优选的，所述液晶显示面板为广角液晶显示面板。
优选的，所述背光源模组为直下式背光源模组。
进一步优选的，所述直下式背光源模组包括反射片、依次设置在所述反射片上的光源、以及扩散板和光学膜片；其中，所述光源用于发光并对发出的光进行发散。
进一步优选的，所述光源为带有凹透镜的LED灯。
基于上述，优选的，所述摄像装置为夜视摄像装置。
进一步的，所述夜视摄像装置包括红外光照部件和摄像部件。
另一方面，提供一种汽车，包括上述的用于汽车的后视系统。
本发明实施例提供了一种用于汽车的后视系统及汽车，一方面，通过摄像装置和液晶显示装置的配合，可以将摄像装置拍摄到的汽车侧后方的广视野图像显示在液晶显示装置上，从而可以实现驾驶视野无盲区，另一方面，通过在液晶显示装置中设置半透半反功能层，可以将该后视系统的液晶显示装置作为普通反光镜来使用，因而可满足不同的用户需求。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术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发明的一些实施例，对于本领域普通技术人员来讲，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为本发明实施例提供的一种用于汽车的后视系统的示意图；
图2为本发明实施例提供的一种液晶显示装置的结构示意图一；
图3为本发明实施例提供的一种液晶显示装置的结构示意图二；
图4a为当背光源模组开启时液晶显示装置的光线示意图；
图4b为当背光源模组关闭时液晶显示装置的光线示意图；
图5为本发明实施例提供的一种直下式背光源模组的俯视示意图；
图6为本发明实施例提供的一种直下式背光源模组的剖视示意图；
图7为本发明实施例提供的一种夜视摄像装置的结构示意图。
附图标记：
01-后视系统；10-摄像装置；11-红外光照部件；12-摄像部件；20-液晶显示装置；21-背光源模组；211-反射片；212-光源；213-扩散板；214-光学膜片；22-液晶显示面板；23-半透半反功能层；231-多层膜反射式偏光片；24-下偏光片；25-上偏光片。
具体实施方式
下面将结合本发明实施例中的附图，对本发明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发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例提供一种用于汽车的后视系统01，如图1所示，包括摄像装置10以及液晶显示装置20；摄像装置10用于获取汽车侧后方的图像，液晶显示装置20用于实时显示摄像装置10获取的所述图像。
如图2所示，液晶显示装置20包括背光源模组21、液晶显示面板22、以及设置在背光源模组21和液晶显示面板22之间的半透半反功能层23；该半透半反功能层23用于在背光源模组21开启时，透射背光源模组21发出的光，在背光源模组21关闭时，反射外界环境光。
其中，液晶显示装置可以被固定在外壳上，装在汽车的设置反光镜的位置处。由于摄像装置10以及液晶显示装置20的正常工作都需要有电，因此，可以将摄像装置10以及液晶显示装置20连接至汽车的中控，由汽车的中控控制供电装置向摄像装置10以及液晶显示装置20供电。
当后视系统01中的摄像装置10以及液晶显示装置20都开启时，该后视系统01中的液晶显示装置20则可作为显示反光镜使用；当后视系统01中的摄像装置10以及液晶显示装置20都关闭时，该后视系统01中的液晶显示装置20则可作为普通反光镜使用。
需要说明的是，第一，摄像装置10应能获取汽车侧后方一定角度范围内的图像，该角度范围以能实现驾驶视野无盲区为准。
第二，背光源模组21可以采用侧入式，直下式等类型。
第三，液晶显示面板22可以不要求高分辨率，只要摄像装置10获取的图像显示在液晶显示面板22后，能被驾驶员识别出即可，具体可根据实际情况进行设定。
第四，在背光源模组21开启时，半透半反功能层23除了可以透射背光源模组21发出的光外，还可以进一步的用于提高背光源模组21发出的光的利用率。
本发明实施例提供了一种用于汽车的后视系统01，一方面，通过摄像装置10和液晶显示装置20的配合，可以将摄像装置10拍摄到的汽车侧后方的广视野图像显示在液晶显示装置20上，从而可以实现驾驶视野无盲区，另一方面，通过在液晶显示装置20中设置半透半反功能层23，可以将该后视系统01中的液晶显示装置20作为普通反光镜来使用，因而可满足不同的用户需求。
优选的，所述后视系统01还包括开关，该开关用于控制背光源模组21的开启和关闭。
其中，该开关例如可以设置在方向盘上，或者是其他驾驶员方便操作的地方，以方便驾驶员根据驾驶情况，将上述后视系统01中的液晶显示装置20作为普通反光镜还是显示反光镜使用。
由于对摄像装置10以及液晶显示装置20的供电是由汽车的中控控制的，因此，也可以将相应的开关电路连接至中控，由中控根据驾驶员对上述开关的操作情况，来选择是否控制供电装置向摄像装置10以及液晶显示装置20供电。
本发明实施例通过设置开关，并将开关设置在汽车的驾驶员方便操作的地方，可根据驾驶员喜好，随时在显示反光镜和普通反光镜之间切换。
优选的，如图3所示，所述液晶显示装置20还包括设置在液晶显示面板22靠近背光源模组21的下偏光片24、以及设置在液晶显示面板22远离背光源模组21的上偏光片25。
所述半透半反功能层23包括多层膜反射式偏光片(APF)231，多层膜反射式偏光片231设置在背光源模组21和下偏光片24之间；多层膜反射式偏光片231用于在背光源模组21关闭时，与下偏光片24复合，反射外界环境光。
具体的，如图4a所示，当背光源模组21开启时，背光源模组21发出的光经过多层膜反射式偏光片231、下偏光片24后成为偏振光，之后经过液晶显示面板22中液晶的调制，从上偏光片25出射。如图4b所示，当背光源模组21关闭时，多层膜反射式偏光片231与下偏光片24复合起到反射光的镜面效果，外界环境光经上偏光片25、液晶显示面板22入射到下偏光片24以及多层膜反射式偏光片231后被反射，然后经液晶显示面板22、上偏光片25出射。
本发明实施例通过设置多层膜反射式偏光片231，除可以实现在背光源模组21开启时透射背光源模组21发出的光，在背光源模组21关闭时反射外界环境光外，还可以在背光源模组21开启时，起到转化偏振光的增光效果，提高背光源模组21发出光的利用率。
优选的，所述液晶显示面板22为广角液晶显示面板。
广角液晶显示面板例如可以为高级超维场转换型(Advanced-super DimensionalSwitching，简称ADS)液晶显示面板。即，可以将像素电极和公共电极都设置在液晶显示面板22的阵列基板上，并使像素电极和公共电极不同层设置，其中在上的电极为条状电极，在下的电极为板状电极。
当然，还可以为共平面切换型(In-Plane Switch，简称IPS)液晶显示面板。即，可以将像素电极和公共电极都设置在液晶显示面板22的阵列基板上，并使像素电极和公共电极同层间隔设置，且均为条状电极。
此外，还可以为多畴垂直配向型(Multi-domain Vertical Alignment，简称MVA)液晶显示面板。即，使液晶显示面板22中的液晶具有不同方向上的取向。
本发明实施例通过采用广角液晶显示面板，可避免由于液晶显示面板视角太小，导致驾驶员无法看清液晶显示面板22显示的图像的问题，进一步保证驾驶视野无盲区。
优选的，所述背光源模组21为直下式背光源模组。这样，可保证发出的光亮度均匀，且光利用率较高。
进一步优选的，如图5和图6所示，直下式背光源模组包括反射片211、依次设置在反射片211上的光源212、以及扩散板213和光学膜片214；光源212用于发光并对发出的光进行发散。
其中，光学膜片214例如可以包括扩散片和棱镜等。
需要说明的是，不对光源212中发光结构的类型进行限定。在此基础上，为了实现对光的发散效果，可以设置相应的光发散结构，具体在此不做限定。
这样，通过将光源212发出的光进行发散，可以降低直下式背光源模组中光源212的数量，并避免出现黑影。
进一步优选的，所述光源212为带有凹透镜的LED(light emitting diode，发光二极管)灯。
一方面，LED具有光效高、低功耗、寿命长等优点，另一方面，凹透镜可很好的起到对光发散的作用。
在上述基础上，考虑到后视系统01中的液晶显示装置20作为显示反光镜使用时，尤其在白天会出现亮度不足的情况，为了满足亮度需求，需使背光源模组21的发光亮度达到一定要求，基于此，可根据反光镜的尺寸以及单个光源212的光通量，来合理设置光源212的个数。
示例的，以目前用于普通汽车的反光镜的尺寸11寸为例，对于直下式背光源模组，可将45颗带凹透镜的LED灯均匀分布在反射片211上，在LED灯之上依次设置扩散板213、扩散片、棱镜等。其中，扩散板213和LED灯之间需满足一定的混光高度，此处例如可以为5cm。
以单个LED灯的光通量为14lm，电压为2.8V，电流为40mA，经仿真测试，该直下式背光源模组的亮度可达16000nit。在此基础上，通过光学评估得到整个液晶显示装置20的亮度可达1400nit，可以充分满足日间反光镜的亮度需求。
基于上述，优选的，所述摄像装置10为夜视摄像装置。
本发明实施例将摄像装置10设置为夜视摄像装置，可以使驾驶员在夜间观察到侧后方不发光的物体，提高驾驶安全性。
进一步优选的，如图7所示，所述夜视摄像装置包括红外光照部件11和摄像部件12。
这样，通过红外光照部件11的照射，可以使摄像部件12在夜间获取侧后方不发光的物体，当通过液晶显示装置20显示后可被驾驶员看到。
本发明实施例还提供一种汽车，包括上述的后视系统01。
本发明实施例的汽车，一方面，通过后视系统01中摄像装置10和液晶显示装置20的配合，可以将摄像装置10拍摄到的汽车侧后方的广视野图像显示在液晶显示装置20上，从而可以实现驾驶视野无盲区，另一方面，通过在液晶显示装置20中设置半透半反功能层23，可以将该后视系统01中的液晶显示装置20作为普通反光镜来使用，因而可满足不同的用户需求。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (8)

1.一种用于汽车的后视系统，其特征在于，包括摄像装置以及液晶显示装置；所述摄像装置用于获取汽车侧后方的图像，所述液晶显示装置用于实时显示所述摄像装置获取的所述图像；
其中，所述液晶显示装置包括背光源模组、液晶显示面板、以及设置在所述背光源模组和所述液晶显示面板之间的半透半反功能层；
所述半透半反功能层用于在所述背光源模组开启时，透射所述背光源模组发出的光，在所述背光源模组关闭时，反射外界环境光；
所述液晶显示装置还包括设置在所述液晶显示面板靠近所述背光源模组的下偏光片、以及设置在所述液晶显示面板远离所述背光源模组的上偏光片；
所述半透半反功能层包括多层膜反射式偏光片，所述多层膜反射式偏光片设置在所述背光源模组和所述下偏光片之间；
所述多层膜反射式偏光片用于在所述背光源模组关闭时，与所述下偏光片复合，反射外界环境光；
所述后视系统还包括开关，所述开关用于控制所述背光源模组的开启和关闭。
2.根据权利要求1所述的后视系统，其特征在于，所述液晶显示面板为广角液晶显示面板。
3.根据权利要求1所述的后视系统，其特征在于，所述背光源模组为直下式背光源模组。
4.根据权利要求3所述的后视系统，其特征在于，所述直下式背光源模组包括反射片、依次设置在所述反射片上的光源、以及扩散板和光学膜片；
其中，所述光源用于发光并对发出的光进行发散。
5.根据权利要求4所述的后视系统，其特征在于，所述光源为带有凹透镜的LED灯。
6.根据权利要求1-5任一项所述的后视系统，其特征在于，所述摄像装置为夜视摄像装置。
7.根据权利要求6所述的后视系统，其特征在于，所述夜视摄像装置包括红外光照部件和摄像部件。
8.一种汽车，其特征在于，包括权利要求1-7任一项所述的后视系统。
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