WO2016112627A1 - 一种显示装置 - Google Patents

一种显示装置 Download PDF

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Publication number
WO2016112627A1
WO2016112627A1 PCT/CN2015/081396 CN2015081396W WO2016112627A1 WO 2016112627 A1 WO2016112627 A1 WO 2016112627A1 CN 2015081396 W CN2015081396 W CN 2015081396W WO 2016112627 A1 WO2016112627 A1 WO 2016112627A1
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WO
WIPO (PCT)
Prior art keywords
screen
projection unit
image
display device
light
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Ceased
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PCT/CN2015/081396
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English (en)
French (fr)
Inventor
周勇俊
魏达
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Yutou Technology Hangzhou Co Ltd
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Yutou Technology Hangzhou Co Ltd
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Priority to SG11201705718WA priority Critical patent/SG11201705718WA/en
Priority to NZ734485A priority patent/NZ734485B2/en
Priority to JP2017537990A priority patent/JP2018503876A/ja
Priority to KR1020177022429A priority patent/KR102267080B1/ko
Priority to EP15877543.7A priority patent/EP3249464B1/en
Priority to CA2973240A priority patent/CA2973240C/en
Application filed by Yutou Technology Hangzhou Co Ltd filed Critical Yutou Technology Hangzhou Co Ltd
Priority to AU2015376661A priority patent/AU2015376661A1/en
Priority to US14/764,172 priority patent/US9958768B2/en
Publication of WO2016112627A1 publication Critical patent/WO2016112627A1/zh
Anticipated expiration legal-status Critical
Priority to ZA2017/05416A priority patent/ZA201705416B/en
Ceased legal-status Critical Current

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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 
    • G02F1/03—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 ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
    • G02F1/0305—Constructional arrangements
    • G02F1/0311—Structural association of optical elements, e.g. lenses, polarizers, phase plates, with the crystal
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/10—Projectors with built-in or built-on screen
    • 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
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/208—Homogenising, shaping of the illumination light
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/62—Translucent screens
    • 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 
    • G02F1/0147—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 thermo-optic effects

Definitions

  • the present invention relates to the field of optics, and more particularly to a display device applied to a curved surface.
  • the existing rear projection screen generally adopts a flat screen, because the distance between the screen and the viewer's eyeball is not uniform, so there is a problem that the effect on both sides is not ideal, the visual fatigue is easy, and the visual effect is poor.
  • the screen of the conventional rear projection system also has a speckle image 6 of the projection source (as shown in FIG. 1), the projected light is the scattered light 5, and the projected image has a blurred border.
  • a display device is applied to the rear projection system, and includes:
  • the screen is a curved surface, and incident light rays are incident from a side of the recessed surface of the screen through a surface of the screen that is convex from the screen to form parallel light rays;
  • a projection unit for projecting light of an image onto the screen, the image including an effective area and an invalid area
  • a cover plate between the screen and the projection unit for covering an invalid area of the image to cause an effective area of the image projected by the projection unit to be projected onto the screen.
  • the screen is made of a light transmissive resin.
  • the projection unit adopts a liquid crystal liquid crystal type projection unit or a digital light processing projection unit.
  • the cover plate is a plurality of, and an exit direction of a plurality of the cover plates along the projection unit for projecting the image is sequentially and parallelly arranged between the projection unit and the screen. To cover the invalid area of the image.
  • a central area of the cover plate is a hollow area, and the cover plate with a plurality of hollow areas gradually increasing in size is disposed between the projection unit and the screen to eliminate invalidity of the image. region.
  • the projection unit comprises:
  • a receiving module configured to receive a projected image
  • a projection module connected to the receiving module for projecting light of the projected image onto the screen.
  • the invention utilizes the cover plate to eliminate the blurred frame of the projected image, and the curved screen made of the light-transmissive resin eliminates the residual image of the spot generated in the projected image, improves the utilization of the light source, and highlights the layering of the image, thereby improving the viewer. Sensory experience.
  • FIG. 1 is a schematic diagram of a residual light spot of a projection light source of a conventional rear projection screen
  • FIG. 2 is a schematic structural view of an embodiment of a display device according to the present invention.
  • FIG. 3 is a schematic view showing an embodiment of light projection of a screen made of a light-transmitting resin according to the present invention
  • FIG. 4a is a schematic diagram of a frame of an embodiment in which an effective area of a projected image is an ellipse according to the present invention
  • 4b is a schematic illustration of a frame of an embodiment in which the effective area of the projected image is rectangular Figure
  • 4c is a schematic diagram of a frame of an embodiment in which the effective area of the projected image is a polygon.
  • a display device is applied to the rear projection system, including: a screen 1, a cover 2 and a projection unit 3, and the screen 1 is a curved surface for recessing incident light from the screen 1.
  • the incident light is transmitted through the screen 1 to protrude from the screen 1 to form parallel rays 4;
  • the projection unit 3 is used to project the light of the image onto the screen 1, the image includes the effective area A and the invalid area B;
  • the cover 2 is located on the screen 1 Between the projection units 3, the invalid area B of the image is covered to project the effective area A of the image projected by the projection unit 3 onto the screen 1.
  • the display device is applied to the rear projection system, and the cover panel 2 is used to eliminate the blurred border of the projected image, and the screen 1 which can transmit the incident light through the screen 1 to form the parallel light 4 not only improves the contrast of the projected image, but also The stray image 6 is eliminated (as shown in Figures 1 and 3) and the utilization of the light source is improved.
  • the curved screen 1 highlights the layering of the image, enhancing the viewer's sensory experience.
  • the screen 1 can be made of a light transmissive resin.
  • the screen 1 may adopt a curved Fresnel lens whose surface is covered with a semi-transmissive layer, and the Fresnel lens is a sheet which is injected by using a polyolefin resin material, the surface of the lens is smooth on one side and the other side is burned by a small surface.
  • the incident light can be transmitted through the lens to form parallel light to improve the contrast of the image, make it more uniform, and eliminate the residual image of the spot generated in the projected image.
  • the projection unit 3 may employ a liquid crystal liquid crystal type projection unit or a digital light processing projection unit.
  • LCOS Liquid crystal on silicon
  • the projection unit adopting this technology has the advantages of high light efficiency, small volume and high aperture ratio.
  • DLP Digital Light Procession
  • the cover 2 is a plurality of, and the exit directions of the light beams projected by the plurality of cover sheets 2 along the projection unit 3 are sequentially and in parallel arranged between the projection unit 3 and the screen 1 to be projected.
  • the invalid area B of the image is covered.
  • the middle area of the cover 2 is a hollow area, and a plurality of cover areas having a gradually increasing size of the hollow area are placed between the projection unit 3 and the screen 1. 2 to eliminate the invalid area B (blurred border) of the projected image, thereby displaying an effective area A of an ellipse, a rectangle, a polygon (as shown in FIGS. 4a-4c) or other shapes.
  • the projection unit 3 may include: a receiving module and a projection module, the receiving module is configured to receive a projected image; and the projection module is coupled to the receiving module for projecting the ray of the projected image Go to screen 1.
  • a video interface such as an HDMI interface, an MIPI interface, or an RGB interface
  • the projection unit 3 is connected to the external control chip through the video interface.
  • the projection unit 3 can receive the video signal sent by the control chip, and the projection unit 3 can project the effective area A of the received image to the resin material.
  • the effective area A of the image is finally displayed on the screen 1 of the curved surface of the robot.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mathematical Physics (AREA)
  • Projection Apparatus (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

一种应用于背投影系统中的显示装置，包括：曲面屏幕（1），入射光线从屏幕（1）凹陷的一面入射，经屏幕（1）透射从屏幕（1）凸出的一面形成平行光线射出；投射单元（3），用以将图像的光线投射至屏幕（1）上，图像包括有效区域（A）和无效区域（B）；遮盖板（2），位于屏幕（1）与投射单元（3）之间，用以将无效区域（B）遮盖使投射单元（3）投射的图像的有效区域（A）光线投射至屏幕（1）。

Description

一种显示装置 技术领域
本发明涉及光学领域，尤其涉及一种应用于曲面的显示装置。
背景技术
现有的背投影屏幕普遍采用的是平面屏幕，因为屏幕与观看者眼球之间距离不均等，所以存在两边效果不理想，视觉易疲劳以及视觉效果差的问题。并且传统的背投影系统的屏幕上还存在投影源的光斑残影6(如图1所示)，投射出的光线为散射光线5，以及投影出的图像周存在模糊的边框等问题。
发明内容
针对现有的背投影屏幕存在的上述问题，现提供一种旨在实现消除光斑残影和模糊边框，以及提高观看者的感官体验的显示装置。
具体技术方案如下：一种显示装置，应用于背投影系统中，包括：
屏幕，所述屏幕为曲面，入射光线从所述屏幕凹陷的一面入射经所述屏幕透射从所述屏幕凸出的一面形成平行光线射出；
投射单元，用以将图像的光线投射至所述屏幕上，所述图像包括有效区域和无效区域；
遮盖板，位于所述屏幕与所述投射单元之间，用以将所述图像的无效区域遮盖使所述投射单元投射的所述图像的有效区域光线投射至所述屏幕。
优选的，所述屏幕采用透光树脂制成。
优选的，所述投射单元采用硅基液晶型投射单元或数字光处理投射单元。
优选的，所述遮盖板为多个，多个所述遮盖板沿着所述投射单元投射所述图像的光线的出射方向在所述投射单元与所述屏幕之间顺次且平行的排列，以将所述图像的无效区域遮盖。
优选的，所述遮盖板的中心区域为镂空区域，在所述投射单元与所述屏幕之间等间距的放置有多个镂空区域尺寸逐渐增大的所述遮盖板以消除所述图像的无效区域。
优选的，所述投射单元包括：
接收模块，用以接收投射图像；
投影模块，连接所述接收模块，用以将所述投射图像的光线投射至所述屏幕上。
上述技术方案的有益效果：
本发明利用遮盖板消除了投射图像的模糊边框，采用透光树脂制成的曲面屏幕消除了投射图像中产生的光斑残影，提高了光源的利用率，突出图像的层次感，从而提高观看者的感官体验。
附图说明
图1为现有的背投影屏幕的投影光源的光斑残影示意图；
图2为本发明所述显示装置的一种实施例的结构示意图；
图3为本发明采用透光树脂制成的屏幕的光线投射一种实施例的示意图；
图4a为本发明的投射图像的有效区域为椭圆的一种实施例的边框示意图；
图4b为本发明的投射图像的有效区域为矩形的一种实施例的边框示意 图；
图4c为本发明的投射图像的有效区域为多边形的一种实施例的边框示意图。
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作出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。
需要说明的是，在不冲突的情况下，本发明中的实施例及实施例中的特征可以相互组合。
下面结合附图和具体实施例对本发明作进一步说明，但不作为本发明的限定。
如图2至图4所示，一种显示装置，应用于背投影系统中，包括：屏幕1、遮盖板2和投射单元3，屏幕1为曲面，用以将入射光线从屏幕1凹陷的一面入射经屏幕1透射从屏幕1凸出的一面形成平行光线4射出；投射单元3用以将图像的光线投射至屏幕1上，图像包括有效区域A和无效区域B；遮盖板2位于屏幕1与投射单元3之间，用以将图像的无效区域B遮盖使投射单元3投射的图像的有效区域A光线投射至屏幕1。
在本实施例中显示装置应用于背投影系统中，采用遮盖板2消除了投射图像的模糊边框，采用可将入射光线经屏幕1透射形成平行光线4的屏幕1不但提高投射图像的对比度，而且消除了光斑残影6(如图1和图3所示)，并提高了光源的利用率。采用曲面的屏幕1可突出图像的层次感，从而提高观看者的感官体验。
在优选的实施例中，屏幕1可采用透光树脂制成。
进一步地，屏幕1可采用表面覆盖半透光层的曲面菲涅尔透镜，菲涅尔透镜是采用聚烯烃树脂材料注压而成的薄片，镜片表面一面为光面，另一面刻录了由小到大的同心圆，可使入射光线经该透镜透射后形成平行光射出，以提高图像的对比度，使之更加均匀，并消除投射图像中产生的光斑残影。
在优选的实施例中，投射单元3可采用硅基液晶型投射单元或数字光处理投射单元。
硅基液晶(Liquid Crystal on Silicon，LCOS)采用反射方式形成图像，光利用效率可达40％。与其他投影技术相比，LCOS技术突出优点是分辨率高，采用该技术的投射单元具有利用光效率高、体积小和开口率高等优点。
数字光处理(Digital Light Procession，DLP)技术的核心是由数以万计的镜片组成的数字显微镜系统，每块镜片之间的距离不到1微米，从而可以达到极高的占空因数。最大限度地缩小投射图像像素之间距离，可以生成无缝的数字化图片，在任何尺寸下都可以保持良好的锐度，不会出现其他技术造成的像素痕或“筛孔”。从而使显示的图像达到水晶般高清晰水平。DLP投影技术可以丰富黑色层次和阴影效果。放映电影时，DLP影院技术可还原350万亿种色素，超过影片的八倍。
在优选的实施例中，遮盖板2为多个，多个遮盖板2沿着投射单元3投射图像的光线的出射方向在投射单元3与屏幕1之间顺次且平行的排列，以将投射图像的无效区域B遮盖。
如图3至图4所示，在优选的实施例中，遮盖板2中间区域为镂空区域，在投射单元3与屏幕1之间等间距的放置有多个镂空区域尺寸逐渐增大的遮盖板2以消除投射图像的无效区域B(模糊边框)，从而显示椭圆形、矩形、多边形(如图4a-4c所示)或其他形状的有效区域A。
在优选的实施例中，投射单元3可包括：接收模块和投影模块，接收模块用以接收投射图像；投影模块连接接收模块，用以将投射图像的光线投射 至屏幕1上。
在具体使用时，可在投射单元3设置视频接口，如：HDMI接口、MIPI接口或RGB接口，通过视频接口将投射单元3与外置的控制芯片连接。当投射单元3的视频接口与控制芯片的视频接口连接时，投射单元3能接收控制芯片发送的视频信号透过遮盖板2投射单元3可将接收到的图像的有效区域A投射至采用树脂材料制成的曲面的屏幕1上，最终将图像的有效区域A显示在机器人的曲面的屏幕1上。
以上所述仅为本发明较佳的实施例，并非因此限制本发明的实施方式及保护范围，对于本领域技术人员而言，应当能够意识到凡运用本发明说明书及图示内容所作出的等同替换和显而易见的变化所得到的方案，均应当包含在本发明的保护范围内。

Claims (6)

  1. 一种显示装置，应用于背投影系统中，其特征在于，包括：
    屏幕，所述屏幕为曲面，入射光线从所述屏幕凹陷的一面入射经所述屏幕透射从所述屏幕凸出的一面形成平行光线射出；
    投射单元，用以将图像的光线投射至所述屏幕上，所述图像包括有效区域和无效区域；
    遮盖板，位于所述屏幕与所述投射单元之间，用以将所述图像的无效区域遮盖使所述投射单元投射的所述图像的有效区域光线投射至所述屏幕。
  2. 如权利要求1所述显示装置，其特征在于，所述屏幕采用透光树脂制成。
  3. 如权利要求1所述显示装置，其特征在于，所述投射单元采用硅基液晶型投射单元或数字光处理投射单元。
  4. 如权利要求1所述显示装置，其特征在于，所述遮盖板为多个，多个所述遮盖板沿着所述投射单元投射所述图像的光线的出射方向在所述投射单元与所述屏幕之间顺次且平行的排列，以将所述图像的无效区域遮盖。
  5. 如权利要求4所述显示装置，其特征在于，所述遮盖板的中心区域为镂空区域，在所述投射单元与所述屏幕之间等间距的放置有多个镂空区域尺寸逐渐增大的所述遮盖板以消除所述图像的无效区域。
  6. 如权利要求1所述显示装置，其特征在于，所述投射单元包括：
    接收模块，用以接收投射图像；
    投影模块，连接所述接收单元，用以将所述投射图像的光线投射至所述屏幕上。
PCT/CN2015/081396 2015-01-12 2015-06-12 一种显示装置 Ceased WO2016112627A1 (zh)

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KR1020177022429A KR102267080B1 (ko) 2015-01-12 2015-06-12 디스플레이 장치
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