WO2015192508A1 - 照明装置、其专用眼镜、其检偏装置及照明系统 - Google Patents

照明装置、其专用眼镜、其检偏装置及照明系统 Download PDF

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Publication number
WO2015192508A1
WO2015192508A1 PCT/CN2014/087008 CN2014087008W WO2015192508A1 WO 2015192508 A1 WO2015192508 A1 WO 2015192508A1 CN 2014087008 W CN2014087008 W CN 2014087008W WO 2015192508 A1 WO2015192508 A1 WO 2015192508A1
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WIPO (PCT)
Prior art keywords
light
liquid crystal
polarizer
quarter
display panel
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PCT/CN2014/087008
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English (en)
French (fr)
Inventor
李文波
武延兵
董烨飞
季春燕
Original Assignee
京东方科技集团股份有限公司
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/652,220 priority Critical patent/US9594273B2/en
Publication of WO2015192508A1 publication Critical patent/WO2015192508A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—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
    • G02F1/01—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 
    • 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors

Definitions

  • At least one embodiment of the present invention is directed to a lighting device, its specialized glasses, its analyzer, and a lighting system.
  • lighting fixtures have undergone earth-shaking changes with the advancement of the economy and society and the emergence of new light sources such as fluorescent lamps, energy-saving lamps and LED lamps.
  • new light sources such as fluorescent lamps, energy-saving lamps and LED lamps.
  • the rich and diverse selection of light sources has also opened a new chapter in the lighting industry. City squares, traffic roads, new repair communities, home decor, shopping malls and office buildings all require the decoration of lighting products and put special demands on lighting products.
  • At least one embodiment of the present invention provides a lighting device, a special lens thereof, an analyzer thereof, and an illumination system for realizing use as a lighting fixture when the light emitting region of the liquid crystal display panel is viewed in a naked eye state. Or the information of the confidential information displayed on the liquid crystal display panel can be seen when the analyzer is viewed.
  • At least one embodiment of the present invention provides a lighting device including: a support member, and a liquid crystal display panel mounted on the support member.
  • the liquid crystal display panel is divided into a display area and a light-emitting area; the liquid crystal display panel has a first polarizer on a light-incident side corresponding to the display area and the light-emitting area; and the liquid crystal display panel is only on the light-emitting side.
  • the area corresponding to the display area has a second polarizer.
  • At least one embodiment of the present invention also provides a special lens for use in the above illumination device provided by an embodiment of the present invention, comprising a lens having a second polarizer.
  • At least one embodiment of the present invention also provides an analyzer for use in the above illumination device provided by an embodiment of the present invention, which includes a second polarizer.
  • At least one embodiment of the present invention further provides an illumination system comprising the above illumination device provided by the embodiment of the present invention, and the special glasses provided by the embodiment of the present invention; or The above-mentioned illuminating device provided by the embodiment of the invention, and the above-mentioned detecting device provided by the embodiment of the invention provided at a certain distance from the illuminating device provided by the embodiment of the invention.
  • FIG. 1 is a schematic structural diagram of a lighting device according to an embodiment of the present invention.
  • FIGS. 2a-2d are schematic diagrams showing a light emitting area and a display area of a lighting device according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a liquid crystal display panel in a lighting device according to Embodiment 1 of the present invention.
  • FIGS. 4a to 4c are schematic diagrams showing the principle of the first embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a liquid crystal display panel in a lighting device according to Embodiment 2 of the present invention.
  • 6a and 6b are schematic diagrams showing the principle of the second embodiment of the present invention.
  • At least one embodiment of the present invention provides a lighting device including: a support member, and a liquid crystal display panel mounted on the support member; the liquid crystal display panel including a display area and a light emitting area; the liquid crystal display panel A region corresponding to the display region and the light-emitting region on the light-incident side has a first polarizer; and the liquid crystal display panel has a second polarizer only in a region corresponding to the display region on the light-emitting side.
  • the liquid crystal display panel may have a quarter-wavelength plate on a light-emitting side corresponding to the light-emitting region; a fast axis of the quarter-wavelength plate and the first polarizer
  • the polarizing axes are at a predetermined angle, and the predetermined angle is greater than or equal to 0 degrees and less than or equal to 90 degrees.
  • the preset angle may be 45 degrees.
  • the liquid crystal display panel includes: an opposite array substrate and an opposite substrate, and a liquid crystal layer disposed between the opposite substrate and the array substrate.
  • a side of the opposite substrate facing the array substrate or a side of the array substrate facing the opposite substrate may be provided with a black matrix layer and a color film layer; or, the opposite direction A side of the substrate facing the array substrate or a side of the array substrate facing the opposite substrate may be provided with only a black matrix layer.
  • the illumination device may further include: a transflective layer disposed on the transparent substrate on a side of the opposite substrate facing away from the array substrate.
  • At least one embodiment of the present invention also provides a dedicated eyeglass for the above lighting device comprising a lens having a second polarizer.
  • the lens may further include a quarter wave plate, and the quarter wave plate and the second polarizer are sequentially arranged in a direction from the light incident side of the lens to the light exit side.
  • An angle formed between a fast axis of the quarter-wave plate and a polarization axis of the second polarizer is equal to the predetermined angle, or a fast axis of the quarter-wave plate
  • the sum of the angle formed between the polarization axes of the second polarizer and the preset angle is 90 degrees.
  • At least one embodiment of the present invention also provides an analyzer for the above illumination device, comprising a second polarizer.
  • the detecting device may further include: a quarter-wavelength plate, wherein the quarter-wave plate and the second polarizer are sequentially arranged in a direction from the light-input side to the light-emitting side; An angle formed between a fast axis of the quarter wave plate and a polarization axis of the second polarizer is equal to the preset angle, or a fast axis of the quarter wave plate and the first The sum of the angle formed between the polarizing axes of the two polarizers and the predetermined angle is 90 degrees.
  • At least one embodiment of the present invention provides a lighting system comprising the lighting device of any of the above, and the special glasses of any of the above; or the lighting system comprising any one of the above
  • the illuminating device and the analyzer according to any one of the above-mentioned items provided at a certain distance from the illuminating device.
  • the special-purpose glasses include a lens having a quarter-wavelength plate or the inspection
  • the biasing device includes a quarter wave plate.
  • a lighting device provided in Embodiment 1 includes a support member 30 and a liquid crystal display panel 40 mounted on the support member 30 .
  • the liquid crystal display panel 40 is divided into a display area a and a light-emitting area b.
  • the liquid crystal display panel 40 has a first polarizer 41 in a region corresponding to the display region a and the light-emitting region b on the light-incident side, that is, the first polarizer 41 is provided on the side where the backlight module 50 emits light.
  • the liquid crystal display panel 40 has the second polarizer 42 in a region corresponding to the display region a on the light-emitting side.
  • the illumination device is taken as a wall lamp as an example.
  • the liquid crystal display panel 40 can be fixed to the wall perpendicular to the ground 10 by using the support member 30 in the illumination device. 20 on.
  • the illumination device provided in this embodiment can also be used as a lighting fixture such as a ceiling light, which is not limited herein.
  • the display area a in the illumination device provided in the first embodiment of the present invention can display a normal image for modifying the appearance of the illumination device.
  • the content displayed on the display area a can be designed according to the needs of the user.
  • the displayed content may be a static pattern such as a pattern, a scene, a picture scroll, or the like, or a dynamic pattern such as a dragon dance or a goldfish leisure tour.
  • the shape of the display area a and the light-emitting area b may be designed according to the needs of the display content, for example, various shapes as shown in FIG. 2a to FIG. 2d, which are not limited herein.
  • a special eyeglass for the above illumination device provided by the first embodiment of the present invention which comprises a lens having a second polarizer.
  • the analyzer for the above illumination device provided by the first embodiment of the present invention is introduced, and the analyzer comprises a second polarizer.
  • the special glasses may move with the user; the analyzer may be disposed at a fixed position at a distance from the illumination device. The dedicated glasses and the analyzer are not described separately below.
  • the area A and the area B shown are respectively in a bright state and a dark state, and the liquid crystal display panel 40 has only a first offset in the light-emitting area b.
  • the light sheet 41 the light is polarized into linearly polarized light by the first polarizer 41, and the linearly polarized light is transmitted through the liquid crystal display panel 40. Since the second polarizer is not filtered, the information contained therein cannot be displayed when viewed in the naked eye state and emits white light, which can be used as a lighting fixture.
  • the liquid crystal display panel 40 when the liquid crystal display panel 40 is viewed through the special glasses 60 or the analyzer 80, the liquid crystal display can be seen due to the filtering effect of the second polarizer in the special glasses 60 or the analyzer 80.
  • the above lighting device provided in Embodiment 1 of the present invention can be applied to a meeting place or an exhibition hall.
  • a row of the above lighting device can be arranged in the exhibition hall as a wall lamp.
  • the lighting device only serves as a lighting, and the staff can wear a special special lens with a second polarizer, or the staff can pass A fixed analyzer that looks at notifications or customer information from the lighting device.
  • the liquid crystal display panel 40 in the above illumination device is used as a lighting fixture, there is no demanding requirement for the color gamut of the panel display.
  • the confidential information that needs to be displayed has no relevant requirements for color, that is, the displayed content is only black and white picture information having a gray level
  • the color film layer in the liquid crystal display panel 40 can be omitted. In this way, on the one hand, the manufacturing process of the liquid crystal display panel 40 can be simplified, and on the other hand, the light-emitting brightness of the liquid crystal display panel 40 as a lighting fixture can also be increased.
  • the liquid crystal display panel 40 may include an opposite array substrate 43 and an opposite substrate 44 , and a liquid crystal layer 45 disposed between the opposite substrate 44 and the array substrate 43 .
  • a side of the opposite substrate 44 facing the array substrate 43 or a side of the array substrate 43 facing the opposite substrate 44 is provided with a black matrix layer and a color film layer; or, the color film layer may be omitted, that is, the opposite substrate 44 faces the array substrate.
  • One side of 43 or one side of the array substrate 43 facing the opposite substrate 44 is provided with only a black matrix layer.
  • the illumination device provided by the embodiment of the present invention is generally black when not in use.
  • a transflective portion may be disposed on the light-emitting side of the liquid crystal display panel 40. The layer enables the illumination device to reflect ambient ambient light as a mirror when not in use.
  • the transflective layer provided on the light-emitting side of the liquid crystal display panel 40 can be realized by using a plated metal or a brightness enhancement film (DEBEF) film.
  • DEBEF brightness enhancement film
  • the transflective layer 70 may be disposed on the transparent substrate 71 on the side of the opposite substrate 44 facing away from the array substrate 43.
  • the first embodiment of the present invention further provides an illumination system, including the illumination device provided in Embodiment 1 of the present invention, and special glasses for the illumination device; or the illumination system includes the embodiment of the present invention.
  • the illumination device, the special glasses thereof, the analyzer and the illumination system provided by the embodiments of the invention adopt a liquid crystal display panel as a lamp capable of displaying patterns and information, and divide the liquid crystal display panel into a display area and a light-emitting area, and enter the light.
  • the first polarizer is disposed on the side corresponding to the display area and the light-emitting area
  • the second polarizer is disposed only in the area corresponding to the display area on the light-emitting side, that is, the second polarizer is not disposed in the light-emitting area.
  • the information contained in the light-emitting area is not filtered by the second polarizer, and the information contained therein cannot be displayed when viewed in the naked eye state, and emits white light, which can be used as a lighting fixture; linearly polarized light
  • the information contained in the display area can be viewed in the naked eye state due to the filtering of the second polarizer, so that the pattern and the simple shared information can be designed in the display area to improve the appearance of the display device.
  • the second embodiment of the present invention provides a lighting device, as shown in FIG. The member 30, and the liquid crystal display panel 40 mounted on the support member 30. As shown in FIGS. 2a-2d, the liquid crystal display panel 40 includes a display area a and a light emitting area b.
  • the liquid crystal display panel 40 has a first polarizer 41 in a region corresponding to the display region a and the light-emitting region b on the light-incident side, that is, the first polarizer 41 is provided on the side where the backlight module 50 emits light.
  • the liquid crystal display panel 40 has a second polarizer 42 in a region corresponding to the display region a on the light-emitting side; on the light-emitting side
  • the area corresponding to the light-emitting area b has a quarter-wavelength plate 46, and a fast angle between the fast axis of the quarter-wavelength plate 46 and the polarization axis of the first polarizer 41 is a predetermined angle greater than or equal to 0. Degree is less than or equal to 90 degrees.
  • the illumination device will be described as an example of a wall lamp.
  • the liquid crystal display panel 40 can be fixed to the wall surface 20 perpendicular to the floor 10 by the support member 30 in the illumination device.
  • the illumination device provided in this embodiment can also be used as a lighting fixture such as a ceiling light, which is not limited herein.
  • the display area a in the illumination device provided in the second embodiment of the present invention can display a normal image for modifying the appearance of the illumination device.
  • the content displayed on the display area a can be designed according to the needs of the user.
  • the displayed content may be a static pattern such as a pattern, a scene, a picture scroll, or the like, or a dynamic pattern such as a dragon dance or a goldfish leisure tour.
  • the shape of the display area a and the light-emitting area b may be designed according to the needs of the display content, for example, various shapes as shown in FIG. 2a to FIG. 2d, which are not limited herein.
  • the special glasses for the above illumination device provided by the second embodiment of the present invention are introduced, and the special glasses include the direction of the light exit side along the light entrance side thereof.
  • the lenses of the quarter-wavelength plate and the second polarizer arranged in sequence, the angle formed between the fast axis of the quarter-wave plate and the polarization axis of the second polarizer is equal to the preset angle, or the sum is 90 degrees.
  • the analyzer for the above illumination device provided by the second embodiment of the present invention
  • the analyzer comprising the quarter-wavelength plate and the second polarizer arranged in the direction of the light-emitting side from the light-incident side thereof,
  • the angle between the fast axis of the one-wavelength plate and the polarization axis of the second polarizer is equal to the preset angle, or the sum is 90 degrees.
  • the dedicated glasses can be moved with the user, and the analyzer can be placed at a fixed position at a distance from the illumination device.
  • the dedicated glasses and analyzers are not described separately below.
  • the area A and the area B shown are respectively in a bright state and a dark state, and the liquid crystal display panel 40 has only the first polarizer 41 in the light-emitting area b.
  • the light is polarized into linearly polarized light by the first polarizer 41, and the linearly polarized light is transmitted through the liquid crystal panel 40 and then emitted to the quarter-wavelength film 46.
  • the quarter-wave plate 46 can convert linearly polarized light at an angle of 45 degrees to the polarization direction of its fast or slow axis into circularly polarized light; linearly polarized at an acute angle other than 45 degrees from the polarization direction of its fast or slow axis Light is converted to elliptically polarized light. Therefore, after a quarter wave The liquid crystal display panel 40 of the long-angle 45-degree angle modulation cannot be shown when the information contained in the light-emitting area b is viewed in the naked-eye state, which causes the liquid crystal display panel 40 to emit white light, thereby being usable as a lighting fixture.
  • the linearly polarized light transmitted through the first polarizer 41 is rotated by 90 degrees or 0 degrees when passing through the liquid crystal panel 40, and the quarter-wavelength film 46
  • the angle of the fast axis is 0 degrees or 90 degrees. Therefore, the light transmitted through the quarter-wave plate 46 is still linearly polarized.
  • the special glasses 60 or the analyzer Fig.
  • the angle between the fast axis of the quarter-wave plate in the middle not shown and the polarization axis of the second polarizer is 0 or 90 degrees, when the polarization axis of the second polarizer and the first polarizer 41 When the polarizing axes are perpendicular or parallel to each other, the content of the secret information displayed by the liquid crystal display panel 40 in the light-emitting area b can be seen by the special glasses 60 or the analyzer.
  • the linearly polarized light transmitted through the first polarizer 41 is rotated by 90 degrees or 0 degrees when passing through the liquid crystal panel 40, and the fast axis of the quarter-wavelength plate 45.
  • the angle is 45 degrees, so the light transmitted through the quarter-wave plate 46 is circularly polarized light; the special axis 60 or the fast axis of the quarter-wave plate in the analyzer and the polarization axis of the second polarizer
  • the angle between the angles is 45 degrees.
  • the linearly polarized light transmitted through the first polarizer 41 is rotated by 90 degrees or 0 degrees when passing through the liquid crystal display panel 40, and is faster than the quarter-wavelength sheet 45.
  • the angle between the axes is an acute angle and is not 45 degrees. Therefore, the light transmitted through the quarter-wavelength plate 46 is elliptically polarized light.
  • the special glasses 60 or the quarter-wavelength plate in the analyzer are The angle between the fast axis and the polarization axis of the second polarizer is equal to the preset angle. Therefore, when the fast axes of the two quarter-wave plates are perpendicular, the liquid crystal can be seen through the special glasses 60 or the analyzer.
  • the privacy displayed by the liquid crystal display panel 40 in the light-emitting area b can be seen only when the illumination device is viewed through the dedicated glasses 60 or the analyzer having the quarter-wave plate and the second polarizer.
  • the matching effect of the illumination device with the dedicated glasses 60 or the analyzer can be improved to prevent the viewer from being
  • the viewing angle causes the special glasses 60 or the analyzer to leak light, enhances the wearing of the special glasses 60 or the display quality of the confidential content displayed by the liquid crystal display panel 40 in the light-emitting area b by the analyzer.
  • the lighting device provided in the second embodiment of the present invention can be applied to a meeting place or an exhibition hall.
  • a row of the lighting device can be disposed in the exhibition hall as a wall lamp, and the lighting device only serves as a lighting function for ordinary visitors.
  • the staff can wear special special glasses with a quarter-wave plate and a second polarizer, or the staff can view notifications, customer information, etc. from the lighting device through a fixed analyzer.
  • the liquid crystal display panel 40 in the above illumination device is used as a lighting fixture, there is no demanding requirement for the color gamut of the panel display.
  • the confidential information that needs to be displayed has no relevant requirements for color, that is, the displayed content is only black and white picture information having a gray level
  • the color film layer in the liquid crystal display panel 40 can be omitted. In this way, on the one hand, the manufacturing process of the liquid crystal display panel 40 can be simplified, and on the other hand, the light-emitting brightness of the liquid crystal display panel 40 as a lighting fixture can also be increased.
  • the liquid crystal display panel 40 may include an opposite array substrate 43 and an opposite substrate 44, and a liquid crystal layer 45 disposed between the opposite substrate 44 and the array substrate 43.
  • a side of the opposite substrate 44 facing the array substrate 43 or a side of the array substrate 43 facing the opposite substrate 44 is provided with a black matrix layer and a color film layer; or, the color film layer may be omitted, that is, the opposite substrate 44 faces the array substrate.
  • One side of 43 or one side of the array substrate 43 facing the opposite substrate 44 is provided with only a black matrix layer.
  • the illumination device provided by the embodiment of the present invention is generally black when not in use.
  • a transflective portion may be disposed on the light-emitting side of the liquid crystal display panel 40.
  • the layer 70 allows the illumination device to reflect ambient ambient light as a mirror when not in use.
  • the transflective layer 70 provided on the light-emitting side of the liquid crystal display panel 40 can be realized by a coated metal or a brightness enhancement film (DEBEF) film.
  • DEBEF brightness enhancement film
  • the transflective layer 70 may be disposed on the transparent substrate 71 on the side of the opposite substrate 44 facing away from the array substrate 43.
  • the second embodiment of the present invention further provides an illumination system including the present The illuminating device provided by the second embodiment of the present invention, and the special spectacles for the illuminating device; or the illuminating system includes the illuminating device provided by the second embodiment of the present invention, and is disposed at a certain distance from the illuminating device The analyzer of the illuminating device.
  • the illumination system reference may be made to the above embodiments of the illumination device and its special glasses or analyzer, and the repeated description is omitted.
  • the illumination device, the special glasses thereof, the analyzer and the illumination system provided by the second embodiment of the present invention use a liquid crystal display panel as a lamp capable of displaying patterns and information, and divide the liquid crystal display panel into a display area and a light-emitting area.
  • a first polarizer is disposed on the light side corresponding to the display area and the light-emitting area, and only a second polarizer is disposed on the light-emitting side corresponding to the display area, that is, the second polarizer is not disposed in the light-emitting area, and the light-emitting side and the light-emitting side are disposed.
  • the area corresponding to the area is also provided with a quarter-wavelength slice.
  • the quarter-wave plate can convert linearly polarized light at a 45-degree angle to the polarization direction of its fast or slow axis into circularly polarized light; linear polarization that is not at an acute angle of 45 degrees from the polarization direction of its fast or slow axis Light is converted to elliptically polarized light. Therefore, the information contained in the liquid crystal display panel modulated by the quarter-wave plate in the light-emitting area cannot be displayed when viewed in the naked eye state, which causes the liquid crystal display panel to emit white light, thereby being usable as a lighting fixture.
  • the confidential content displayed by the liquid crystal display panel in the light-emitting area can be seen only when the illumination device is viewed through the dedicated glasses or the analyzer having the quarter-wave plate and the second polarizer.
  • the matching effect of the illumination device with the dedicated glasses or the analyzer can be improved, and the viewing angle of the viewer can be prevented.
  • the phenomenon of light leakage of the glasses or the detecting device enhances the display quality of the confidential content displayed in the light-emitting area by the special-purpose glasses or by the analyzer.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Polarising Elements (AREA)
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Abstract

一种照明装置、其专用眼镜、其检偏装置及照明系统，照明装置包括支撑件（30）以及安装于支撑件（30）上的液晶显示面板（40）。液晶显示面板（40）包括显示区域（a）和发光区域（b）；液晶显示面板（40）在入光侧与显示区域（a）和发光区域（b）对应的区域设置第一偏光片（41），在出光侧仅与显示区域（a）对应的区域具有第二偏光片（42）。照明装置因其发光区域（b）在裸眼状态下观看时无法示出而发出白色光线，可作为照明灯具使用，当通过专用眼镜（60）或检偏装置（80）观看时可以看到液晶显示面板（40）所显示的保密信息内容。

Description

照明装置、其专用眼镜、其检偏装置及照明系统 技术领域
本发明的至少一个实施例涉及一种照明装置、其专用眼镜、其检偏装置及照明系统。
背景技术
照明器具作为日常消耗品，随着经济社会的进步以及荧光灯、节能灯、LED灯等新型光源的出现，已经发生了翻天覆地的变化。光源的丰富和多样选择性也使照明灯具行业展开了新的一页。城市广场、交通道路、新修社区、家庭装饰、商城与写字楼等，都需要照明产品的装饰，并对照明产品提出了特殊需求。
发明内容
本发明的至少一个实施例提供了一种照明装置、其专用眼镜、其检偏装置及照明系统，用以实现液晶显示面板的发光区域在裸眼状态下观看时作为照明灯具使用，当通过专用眼镜或检偏装置观看时可以看到液晶显示面板所显示的保密信息内容。
本发明的至少一个实施例提供了一种照明装置，其包括：支撑件，以及安装于所述支撑件上的液晶显示面板。所述液晶显示面板分为显示区域和发光区域；所述液晶显示面板在入光侧与所述显示区域和所述发光区域对应的区域具有第一偏光片；所述液晶显示面板在出光侧仅与所述显示区域对应的区域具有第二偏光片。
本发明的至少一个实施例还提供了一种用于本发明实施例提供的上述照明装置的专用眼镜，其包括具有第二偏光片的镜片。
本发明的至少一个实施例还提供了一种用于本发明实施例提供的上述照明装置的检偏装置，其包括第二偏光片。
本发明的至少一个实施例还提供了一种照明系统，其包括本发明实施例提供的上述照明装置，以及本发明实施例提供的上述专用眼镜；或，包括本 发明实施例提供的上述照明装置，以及设置于与本发明实施例提供的上述照明装置具有一定距离的本发明实施例提供的上述检偏装置。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例，而非对本发明的限制。
图1为本发明实施例提供的照明装置的结构示意图；
图2a-图2d为本发明实施例提供的照明装置的发光区域和显示区域的示意图；
图3为本发明实施例一提供的照明装置中的液晶显示面板的结构示意图；
图4a至图4c为本发明实施例一的原理示意图；
图5为本发明实施例二提供的照明装置中的液晶显示面板的结构示意图；
图6a和图6b为本发明实施例二的原理示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例的附图，对本发明实施例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发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的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。
本申请的发明人注意到，目前的照明产品往往只能实现普通照明功能，并不具备其他差异化的特殊显示功能。
本发明的至少一个实施例提供了一种照明装置，其包括：支撑件，以及安装于所述支撑件上的液晶显示面板；所述液晶显示面板包括显示区域和发光区域；所述液晶显示面板在入光侧与所述显示区域和所述发光区域对应的区域具有第一偏光片；所述液晶显示面板在出光侧仅与所述显示区域对应的区域具有第二偏光片。
在一个实施例中，所述液晶显示面板在出光侧与所述发光区域对应的区域可以具有四分之一波长片；所述四分之一波长片的快轴与所述第一偏光片的偏光轴之间成预设角，所述预设角大于或等于0度且小于或等于90度。例如，所述预设角可以为45度。
所述液晶显示面板包括：相对而置的阵列基板和对向基板，以及设置于所述对向基板和阵列基板之间的液晶层。在不同实施例中，所述对向基板面向所述阵列基板的一侧或所述阵列基板面向所述对向基板的一侧可以设置有黑矩阵层以及彩膜层；或，所述对向基板面向所述阵列基板的一侧或所述阵列基板面向所述对向基板的一侧可以仅设置有黑矩阵层。
在一个实施例中，上述照明装置还可以包括：设置于所述对向基板背离所述阵列基板一侧的透明衬底上的半透半反层。
本发明的至少一个实施例还提供了一种用于上述照明装置的专用眼镜，其包括具有第二偏光片的镜片。在一个实施例中，所述镜片还可以包括四分之一波长片，所述四分之一波长片和所述第二偏光片沿由所述镜片的入光侧指向出光侧的方向依次排列；所述四分之一波长片的快轴与所述第二偏光片的偏光轴之间所成的角与所述预设角相等，或者所述四分之一波长片的快轴与所述第二偏光片的偏光轴之间所成的角与所述预设角之和为90度。
本发明的至少一个实施例还提供了一种用于上述照明装置的检偏装置，其包括第二偏光片。在一个实施例中，上述检偏装置还可以包括：四分之一波长片，所述四分之一波长片和所述第二偏光片沿由入光侧指向出光侧的方向依次排列；所述四分之一波长片的快轴与所述第二偏光片的偏光轴之间所成的角与所述预设角相等，或者所述四分之一波长片的快轴与所述第二偏光片的偏光轴之间所成的角与所述预设角之和为90度。
本发明的至少一个实施例还提供了一种照明系统，其包括上述任一项所述的照明装置，以及上述任一项所述的专用眼镜；或，该照明系统包括上述任一项所述的照明装置，以及设置于与所述照明装置具有一定距离的上述任一项所述的检偏装置。在一个实施例中，当所述液晶显示面板在出光侧与所述发光区域对应的区域具有四分之一波长片时，所述专用眼镜包括具有四分之一波长片的镜片或者所述检偏装置包括四分之一波长片。
下面结合附图，对本发明实施例提供的照明装置、其专用眼镜、其检偏 装置及照明系统的具体实施方式进行详细地说明。
附图中各区域的形状和大小不反映照明装置的真实比例，目的只是示意说明本发明内容。
实施例一
如图1所示，实施例一提供的一种照明装置包括：支撑件30，以及安装于支撑件30上的液晶显示面板40。如图2a-图2d所示，液晶显示面板40分为显示区域a和发光区域b。
如图3所示，液晶显示面板40在入光侧与显示区域a和发光区域b对应的区域具有第一偏光片41，即在背光模组50发光的一侧具有均第一偏光片41。液晶显示面板40在出光侧仅与显示区域a对应的区域具有第二偏光片42。
在本实施例中以该照明装置作为壁灯为例进行说明，在具体实施时，如图1所示，可以利用照明装置中的支撑件30将液晶显示面板40固定于与地面10垂直的墙面20上。当然，本实施例提供的照明装置也可以作为顶灯等照明灯具，在此不做限定。
下面对本发明实施例一提供的上述照明装置的原理进行说明。
在本发明实施例一提供的照明装置中的显示区域a可显示正常图像，用于修饰照明装置的外观。在具体实施时，显示区域a显示的内容可根据用户需求进行适时设计，例如，显示的内容可以是静态图案如花纹、景色、画卷等，也可是动态图案如卷龙飞舞、金鱼闲游等。并且，显示区域a和发光区域b的形状可以根据显示内容的需要进行设计，例如，可以是如图2a至图2d所示的各种形状，在此不做限定。
为便于对照明装置的发光区域b的有益效果进行描述，在此引入了本发明实施例一提供的用于上述照明装置的专用眼镜，该专用眼镜包括具有第二偏光片的镜片。或引入本发明实施例一提供的用于上述照明装置的检偏装置，该检偏装置包括第二偏光片。在具体实施时，专用眼镜可以随着使用者移动；检偏装置可以设置在与照明装置相距一定距离的固定位置。在下文中不再单独对该专用眼镜和检偏装置进行描述。
在本发明实施例一提供的照明装置中，如图4a所示，所示区域A和所示区域B分别为亮态和暗态，液晶显示面板40在发光区域b只具有第一偏 光片41，光线经第一偏光片41偏振成线偏振光，线偏振光透过液晶显示面板40后射出。由于未经第二偏光片的滤光，其包含的信息在裸眼状态观看时无法示出而发出白色光线，可作为照明灯具使用。
如图4b和图4c所示，当通过专用眼镜60或者检偏装置80观看液晶显示面板40时，由于专用眼镜60或检偏装置80中第二偏光片的滤光作用，可以看到液晶显示面板40在发光区域b所显示的保密信息内容。
在具体实施时，本发明实施例一提供的上述照明装置可以应用于会场或者展厅中。例如可以在展厅中设置一排上述照明装置作为壁灯，对普通参观者而言，照明装置仅起到照明作用，而工作人员可以佩戴特殊的具有第二偏光片的专用眼镜，或者工作人员可以通过固定的检偏装置，从照明装置上观看到通知或客户信息等。
由于在上述照明装置中的液晶显示面板40作为照明灯具使用，因此对于面板显示的色域并没有苛刻的要求。在一个示例中，当需要显示的保密信息对于色彩无相关要求时，即显示的内容仅为具有灰度等级的黑白画面信息时，可以将液晶显示面板40中的彩膜层省去。这样一方面可以简化液晶显示面板40的制作工艺，另一方面也可以增加液晶显示面板40作为照明灯具的发光亮度。
例如，如图3所示，液晶显示面板40可以包括：相对而置的阵列基板43和对向基板44，以及设置于对向基板44和阵列基板43之间的液晶层45。对向基板44面向阵列基板43的一侧或阵列基板43面向对向基板44的一侧设置有黑矩阵层以及彩膜层；或，可以省去彩膜层，即对向基板44面向阵列基板43的一侧或阵列基板43面向对向基板44的一侧仅设置有黑矩阵层。
本发明实施例提供的上述照明装置在不工作时，一般为黑色，为了增加该照明装置的实用性以及美观性，在一个示例中，还可以在液晶显示面板40的出光侧设置半透半反层，使该照明装置在不工作时能反射周围的环境光作为镜面使用。
例如，在液晶显示面板40的出光侧设置的半透半反层可以采用镀膜金属或者增光膜(DEBEF)膜材实现。
例如，如图3所示，半透半反层70可以设置于对向基板44背离阵列基板43一侧的透明衬底71上。
基于同一发明构思，本发明实施例一还提供了一种照明系统，其包括本发明实施例一提供的上述照明装置，以及用于该照明装置的专用眼镜；或者该照明系统包括本发明实施例一提供的上述照明装置，以及设置于与该照明装置具有一定距离的用于该照明装置的检偏装置。该照明系统的实施可以参见上述照明装置和其专用眼镜或检偏装置的实施例，重复之处不再赘述。
本发明实施例提供的上述照明装置、其专用眼镜、其检偏装置及照明系统，采用液晶显示面板作为可显示图案和信息的灯具，将液晶显示面板分为显示区域和发光区域，在入光侧与显示区域和发光区域对应的区域均设置第一偏光片，在出光侧仅与显示区域对应的区域设置第二偏光片，即在发光区域不设置第二偏光片。这样，液晶显示面板在工作时，背光模组的光线经过第一偏光片变为线偏振光。线偏振光透过液晶显示面板后在发光区域由于未经第二偏光片的滤光，其包含的信息在裸眼状态下观看时无法示出而发出白色光线，可作为照明灯具使用；线偏振光透过液晶显示面板后在显示区域由于经第二偏光片的滤光，其包含的信息在裸眼状态下可被观看到，从而在显示区域可以设计图案和简单的共享信息以提高显示装置的美观效果；通过配戴设置有第二偏光片的镜片的专用眼镜，或通过与照明装置相距一定距离设置的具有第二偏光片的检偏装置，由于第二偏光片的滤光作用，可以看到液晶显示面板在发光区域所显示的保密信息内容，实现了照明装置的特殊显示功能。
实施例二
本发明实施例一提供的上述照明装置，在实际应用中，有可能出现因为观看者的观看角度(例如观看者歪头等)不当导致专用眼镜漏光的现象，或者因为检偏装置与照明装置在安装时固定的位置不当导致观看的漏光现象。为了增强通过配戴专用眼镜或采用检偏装置观看液晶显示面板在发光区域b所显示保密内容的显示品质，本发明实施例二提供了一种照明装置，如图1所示，其包括：支撑件30，以及安装于支撑件30上的液晶显示面板40。如图2a-图2d所示，液晶显示面板40包括显示区域a和发光区域b。如图5所示，液晶显示面板40在入光侧与显示区域a和发光区域b对应的区域具有第一偏光片41，即在背光模组50发光的一侧具有均第一偏光片41。液晶显示面板40在出光侧与显示区域a对应的区域具有第二偏光片42；在出光侧与 发光区域b对应的区域具有四分之一波长片46，该四分之一波长片46的快轴与第一偏光片41的偏光轴之间成预设角，该预设角大于或等于0度且小于或等于90度。
在本实施例中以该照明装置作为壁灯为例进行说明。例如，如图1所示，可以利用照明装置中的支撑件30将液晶显示面板40固定于与地面10垂直的墙面20上。当然，本实施例提供的照明装置也可以作为顶灯等照明灯具，在此不做限定。
下面对本发明实施例二提供的上述透明显示装置的原理进行说明。
在本发明实施例二提供的照明装置中的显示区域a可显示正常图像，用于修饰照明装置的外观。在具体实施时，显示区域a显示的内容可根据用户需求进行适时设计，例如，显示的内容可以是静态图案如花纹、景色、画卷等，也可是动态图案如卷龙飞舞、金鱼闲游等。并且，显示区域a和发光区域b的形状可以根据显示内容的需要进行设计，例如，可以是如图2a至图2d所示的各种形状，在此不做限定。
为便于对照明装置的发光区域b的有益效果进行描述，在此引入了本发明实施例二提供的用于上述照明装置的专用眼镜，该专用眼镜包括具有沿由其入光侧指向出光侧方向依次排列的四分之一波长片和第二偏光片的镜片，四分之一波长片的快轴与第二偏光片的偏光轴之间所成的角与预设角相等，或者之和为90度。或引入本发明实施例二提供的用于上述照明装置的检偏装置，该检偏装置包括沿由其入光侧指向出光侧方向依次排列的四分之一波长片和第二偏光片，四分之一波长片的快轴与第二偏光片的偏光轴之间所成的角与预设角相等，或者之和为90度。例如，专用眼镜可以随着使用者移动，检偏装置可以设置在与照明装置相距一定距离的固定位置。下文中不再单独对该专用眼镜和检偏装置进行描述。
在本发明实施例二提供的照明装置中，如图6a所示，所示区域A和所示区域B分别为亮态和暗态，液晶显示面板40在发光区域b只具有第一偏光片41，光线经第一偏光片41偏振成线偏振光，线偏振光透过液晶面板40后射出到四分之一波长片46。四分之一波长片46可以将与其快轴或者慢轴的偏振方向成45度角的线偏振光转换为圆偏振光；将与其快轴或者慢轴的偏振方向成非45度锐角的线偏振光转换为椭圆偏振光。因此，经过四分之一波 长片45度角调制的液晶显示面板40在发光区域b所包含的信息在裸眼状态下观看时无法示出，这使液晶显示面板40发出白色光线，从而可作为照明灯具使用。
当上述预设角为90度或0度时，透过第一偏光片41的线偏振光在透过液晶面板40时，其偏振方向旋转90度或者0度，与四分之一波长片46的快轴的夹角为0度或者90度，因此，透过四分之一波长片46的光仍然为线偏振光，此时，如图6b所示，专用眼镜60或检偏装置(图中未示出)中的四分之一波长片的快轴与第二偏光片的偏光轴之间的夹角为0度或者90度，当第二偏光片的偏光轴与第一偏光片41的偏光轴之间相互垂直或平行时，通过专用眼镜60或检偏装置能够看到液晶显示面板40在发光区域b所显示的保密信息内容；
当上述预设角为45度时，透过第一偏光片41的线偏振光在透过液晶面板40时，其偏振方向旋转90度或者0度，与四分之一波长片45的快轴的夹角为45度，因此，透过四分之一波长片46的光为圆偏振光；专用眼镜60或检偏装置中四分之一波长片的快轴与第二偏光片的偏光轴之间的夹角为45度，此时，专用眼镜或检偏装置中第二偏光片的偏光轴与液晶显示面板40中第一偏光片41的偏光轴之间的角度为任意值时，均可以通过专用眼镜60或检偏装置看到液晶显示面板40在发光区域b所显示的保密信息内容；
当上述预设角为其他锐角时，透过第一偏光片41的线偏振光在透过液晶显示面板40时，其偏振方向旋转90度或者0度，与四分之一波长片45的快轴的夹角为锐角，且不为45度，因此，透过四分之一波长片46的光为椭圆偏振光，此时，专用眼镜60或检偏装置中的四分之一波长片的快轴与第二偏光片的偏光轴之间的夹角与上述预设角相等，因此，当两个四分之一波长片的快轴垂直时可以通过专用眼镜60或检偏装置看到液晶显示面板40在发光区域b所显示的保密信息内容；若专用眼镜60或检偏装置中的四分之一波长片的快轴与第二偏光片之间的夹角与上述预设角之和为90度，则，当两个四分之一波长片的快轴平行时可以通过专用眼镜60或检偏装置看到液晶显示面板40在发光区域b所显示的保密信息内容。
因此，仅当通过具有四分之一波长片和第二偏光片的专用眼镜60或检偏装置观看照明装置时，才能看到液晶显示面板40在发光区域b所显示的保密 内容并且，通过分别在液晶显示面板40和专用眼镜60或检偏装置上设置四分之一波长片的方式，可以提高照明装置与专用眼镜60或检偏装置的匹配效果，防止因观看者的观看角度导致专用眼镜60或检偏装置漏光的现象，增强了配戴专用眼镜60或通过检偏装置观看液晶显示面板40在发光区域b所显示保密内容的显示品质。
在具体实施时，本发明实施例二提供的上述照明装置可以应用于会场或者展厅中，例如可以在展厅中设置一排上述照明装置作为壁灯，对普通参观者而言照明装置仅起到照明作用，而工作人员可以配戴特殊的具有四分之一波长片和第二偏光片的专用眼镜，或者工作人员可以通过固定的检偏装置，从照明装置上观看到通知、或客户信息等。
由于在上述照明装置中的液晶显示面板40作为照明灯具使用，因此对于面板显示的色域并没有苛刻的要求。在一个示例中，当需要显示的保密信息对于色彩无相关要求时，即显示的内容仅为具有灰度等级的黑白画面信息时，可以将液晶显示面板40中的彩膜层省去。这样一方面可以简化液晶显示面板40的制作工艺，另一方面也可以增加液晶显示面板40作为照明灯具的发光亮度。
例如，如图5所示，液晶显示面板40可以包括：相对而置的阵列基板43和对向基板44，以及设置于对向基板44和阵列基板43之间的液晶层45。对向基板44面向阵列基板43的一侧或阵列基板43面向对向基板44的一侧设置有黑矩阵层以及彩膜层；或，可以省去彩膜层，即对向基板44面向阵列基板43的一侧或阵列基板43面向对向基板44的一侧仅设置有黑矩阵层。
本发明实施例提供的上述照明装置在不工作时，一般为黑色，为了增加该照明装置的实用性以及美观性，在一个示例中，还可以在液晶显示面板40的出光侧设置半透半反层70，使该照明装置在不工作时能反射周围的环境光作为镜面使用。
例如，在液晶显示面板40的出光侧设置的半透半反层70可以采用镀膜金属或增光膜(DEBEF)膜材实现。
例如，如图5所示，半透半反层70可以设置于对向基板44背离阵列基板43一侧的透明衬底71上。
基于同一发明构思，本发明实施例二还提供了一种照明系统，其包括本 发明实施例二提供的上述照明装置，以及用于该照明装置的专用眼镜；或者，该照明系统包括本发明实施例二提供的上述照明装置，以及设置于与该照明装置具有一定距离的用于该照明装置的检偏装置。该照明系统的实施可以参见上述照明装置和其专用眼镜或检偏装置的实施例，重复之处不再赘述。
本发明实施例二提供的上述照明装置、其专用眼镜、其检偏装置及照明系统，采用液晶显示面板作为可显示图案和信息的灯具，将液晶显示面板分为显示区域和发光区域，在入光侧与显示区域和发光区域对应的区域均设置第一偏光片，在出光侧仅与显示区域对应的区域具有第二偏光片，即在发光区域不设置第二偏光片，在出光侧与发光区域对应的区域还设置四分之一波长片。由于四分之一波长片可以将与其快轴或者慢轴的偏振方向成45度角的线偏振光转换为圆偏振光；将与其快轴或者慢轴的偏振方向成非45度锐角的线偏振光转换为椭圆偏振光。因此，在发光区域经过四分之一波长片调制的液晶显示面板所包含的信息在裸眼状态下观看时无法示出，这使液晶显示面板发出白色光线，从而可作为照明灯具使用。在本发明实施例二中，仅当通过具有四分之一波长片和第二偏光片的专用眼镜或检偏装置观看照明装置时，才能看到液晶显示面板在发光区域所显示的保密内容。并且，通过分别在液晶显示面板和专用眼镜或检偏装置上设置四分之一波长片的方式，可以提高照明装置与专用眼镜或检偏装置的匹配效果，防止因观看者的观看角度导致专用眼镜或检偏装置漏光的现象，增强了配戴专用眼镜或通过检偏装置观看液晶显示面板在发光区域所显示保密内容的显示品质。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。
本申请要求于2014年6月19日递交的中国专利申请第201410277670.8号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (11)

  1. 一种照明装置，包括：支撑件，以及安装于所述支撑件上的液晶显示面板；其中，
    所述液晶显示面板包括显示区域和发光区域；
    所述液晶显示面板在入光侧与所述显示区域和所述发光区域对应的区域具有第一偏光片；
    所述液晶显示面板在出光侧仅与所述显示区域对应的区域具有第二偏光片。
  2. 如权利要求1所述的照明装置，其中，
    所述液晶显示面板在出光侧与所述发光区域对应的区域具有四分之一波长片；所述四分之一波长片的快轴与所述第一偏光片的偏光轴之间成预设角，所述预设角大于或等于0度且小于或等于90度。
  3. 如权利要求1或2所述的照明装置，其中，所述液晶显示面板包括：相对而置的阵列基板和对向基板，以及设置于所述对向基板和阵列基板之间的液晶层；其中，
    所述对向基板面向所述阵列基板的一侧或所述阵列基板面向所述对向基板的一侧设置有黑矩阵层以及彩膜层；或，
    所述对向基板面向所述阵列基板的一侧或所述阵列基板面向所述对向基板的一侧仅设置有黑矩阵层。
  4. 如权利要求1-3任一所述的照明装置，还包括：设置于所述对向基板背离所述阵列基板一侧的透明衬底上的半透半反层。
  5. 如权利要求2-4任一所述的照明装置，其中，所述预设角为45度。
  6. 一种用于如权利要求1-5任一项所述的照明装置的专用眼镜，包括具有第二偏光片的镜片。
  7. 如权利要求6所述的照明装置的专用眼镜，其中，
    所述镜片还包括四分之一波长片，所述四分之一波长片和所述第二偏光片沿由所述镜片的入光侧指向出光侧的方向依次排列；
    所述四分之一波长片的快轴与所述第二偏光片的偏光轴之间所成的角与所述预设角相等，或者所述四分之一波长片的快轴与所述第二偏光片的偏光 轴之间所成的角与所述预设角之和为90度。
  8. 一种用于如权利要求1-5任一项所述的照明装置的检偏装置，包括第二偏光片。
  9. 如权利要求8所述的检偏装置，还包括：四分之一波长片，其中，所述四分之一波长片和所述第二偏光片沿由入光侧指向出光侧的方向依次排列；
    所述四分之一波长片的快轴与所述第二偏光片的偏光轴之间所成的角与所述预设角相等，或者所述四分之一波长片的快轴与所述第二偏光片的偏光轴之间所成的角与所述预设角之和为90度。
  10. 一种照明系统，包括如权利要求1-5任一项所述的照明装置，以及如权利要求6或7所述的专用眼镜；或，
    如权利要求1-5任一项所述的照明装置，以及设置于与所述照明装置具有一定距离的如权利要求8或9所述的检偏装置。
  11. 如权利要求10所述的照明系统，其中，
    当所述液晶显示面板在出光侧与所述发光区域对应的区域具有四分之一波长片时，所述专用眼镜包括具有四分之一波长片的镜片或者所述检偏装置包括四分之一波长片。
PCT/CN2014/087008 2014-06-19 2014-09-20 照明装置、其专用眼镜、其检偏装置及照明系统 WO2015192508A1 (zh)

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