WO2014190656A1 - Display device - Google Patents

Display device Download PDF

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Publication number
WO2014190656A1
WO2014190656A1 PCT/CN2013/085270 CN2013085270W WO2014190656A1 WO 2014190656 A1 WO2014190656 A1 WO 2014190656A1 CN 2013085270 W CN2013085270 W CN 2013085270W WO 2014190656 A1 WO2014190656 A1 WO 2014190656A1
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WO
Grant status
Application
Patent type
Prior art keywords
unit
display
liquid crystal
display device
transparent
Prior art date
Application number
PCT/CN2013/085270
Other languages
French (fr)
Chinese (zh)
Inventor
武延兵
Original Assignee
京东方科技集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B27/00Other optical systems; Other optical apparatus
    • G02B27/02Viewing or reading apparatus
    • G02B27/022Viewing apparatus
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B27/00Other optical systems; Other optical apparatus
    • G02B27/01Head-up displays
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices 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
    • G02F1/01Devices 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
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1347Arrangement 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
    • G02F1/13476Arrangement 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 in which at least one liquid crystal cell or layer assumes a scattering state
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/54Accessories
    • G03B21/56Projection screens
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B27/00Other optical systems; Other optical apparatus
    • G02B27/01Head-up displays
    • G02B27/0101Head-up displays characterised by optical features
    • G02B2027/0118Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices 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
    • G02F1/01Devices 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
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1334Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals

Abstract

Provided is a display device. Same solves the problem of poor adaptability and uncontrollability of transparency of an existing transparent display. The display device comprises: a transparent reflection unit (1), where the reflection unit (1) is provided with a display surface (13) and an opposing surface (14) that are opposite to each other; a display unit (2), where a content displayed by the display unit (2) is projected onto the opposing surface (14) of the reflection unit (1); and, a pass-through scattering switching unit (9), which is arranged on the opposing surface (14) of the reflection unit (1), where the pass-through scattering switching unit (9) is capable of switching between a scattering state and a transparent state, allowing for application of a liquid crystal display screen or of an organic light-emitting diode display screen in the display unit (2).

Description

DISPLAY DEVICE Technical Field

Embodiments of the present invention relates to display technology, particularly relates to a transparent and non-transparent mode the display means to switch between display modes and transparency controllable. Background technique

Recently, with the development of information technology, transparent display technology increasingly cause for concern, transparent display technology has important applications in public display, virtual reality, human-computer interaction aspects. The transparent display a certain degree of penetration, so that the user can see both the information and the actual scene after the display shown on the display, transparent display applicable to the construction, vehicle windows, shop windows and so on.

Conventional basic principle of a transparent display device is as follows: 1, the content display unit 2 on the reflection plate 12, the contents of which strikes the reflecting plate 12 of the transflective film 11 is projected by the projection unit 3 on, since the transflective reflective film 11 allows part of the light incident thereon, partially transparent, 5 enemy eye can see a display image is reflected by the transflective film 11 (from the display unit 2), may be through transflective film 11 to see the real scene 4.

The inventors have found that at least the following problems in the prior art: the conventional transparent display apparatus, since the reflectance of the transflective film / transmittance is fixed, and therefore its poor adaptability, transparency can not be varied, and only transparent display mode can not be displayed in a transparent and non-transparent mode switching between display modes. SUMMARY

Embodiment of the invention Problem to be solved by including, means poor adaptability, transparency is not controlled for the conventional transparent display problems, to provide a transparent display and the non-transparent mode, the switching between the display mode and controllable transparency display means.

Solution to Problem The solution according to the embodiment of the present invention is a display device, comprising: a transparent reflecting means, the reflecting means having a display surface and an opposite facing surface; a display unit, the display unit to display content is projected the opposite face to the reflecting unit; and a transmission scattered switching unit disposed on opposite sides of said reflecting unit, and the unit can be switched between a transparent state and scattering through the scattering state is switched. In one example, the switching unit includes an electrode through scattering polymer dispersed liquid crystal film and a film for controlling a polymer dispersed liquid crystal state.

In one example, the electrode is a transparent electrode.

In one example, the polymeric ^: a liquid crystal film, the liquid crystal droplets evenly distributed in the organic polymer matrix, the polymer dispersed liquid crystal film in a transparent state, the liquid crystal droplets, polymer matrix refracted the same rate.

In one example, the display device further includes a content display unit to display the projected onto a projection surface opposite the reflecting unit means.

In one example, the reflecting unit is a plate, said projection unit comprises a light incident surface of said reflecting unit, the light incident surface is a convex surface.

In one example, the projection means comprises at least one separate lens.

In one example, the reflecting unit is a plate-like, or is a transflective film.

In one example, the display unit is a liquid crystal display or an organic light emitting diode display. Since the display device according to the present embodiment of the invention scattering switching unit having a transmission which can be switched between the transparent state and the scattering state, it is possible to realize control of the display apparatus through the transparency of the scattering state by controlling the switching unit, so as to realize a display device transparent display mode switching between display and non-transparent mode. BRIEF DESCRIPTION

Figure 1 is a simplified schematic of a conventional transparent display;

2 embodiment of the present invention means a schematic structural diagram of a display 2; and a structural diagram of embodiment A reflective unit embodiment of FIG 2 of the present invention.

Wherein reference numerals: 1, the reflecting unit; 11, a transflective film; 12, a reflection plate; 13, display surface; 14, opposing face; 2, a display unit; 3, the projection unit; 4, scene; 5, eye; 9, scatter through the switching unit. detailed description

To enable those skilled in the art better understand the technical solutions in the embodiments of the present invention, the following accompanying drawings and specific embodiments of the present invention will be described in further detail. Example 1:

The present embodiment provides a display device, comprising: a transparent reflecting means, the reflecting means having a display surface and an opposite surface opposite to each other; a display unit, the display content of the display unit is projected opposite to the reflecting unit surface; and a transmission scattering switching unit which is provided at opposite sides of said reflecting unit, and the unit can be switched between a transparent state and scattering through the scattering state is switched.

Since the display device according to the present embodiment of the invention scattering switching unit having a transmission which can be switched between the scattering state and a transparent state, control may be achieved by controlling the transparency of the display device of the scattering state through the switching unit. Similarly when the display device is required as a non-transparent display means used; that is, required display device used as a transparent display device, so that the cell in a transparent state diffusion through the switching time, the display device is a transparent display mode , so that scattering in the scattering state through the switching unit, this time, the display mode of the display device non-transparent, so as to realize a display device and a non-transparent mode is displayed in the display switching between a transparent mode. It will be appreciated, when in the scattering state and a transparent state between the transmission scattering switching unit, the display device will at this time have respective transparency, that is, the display device can be controlled by diffusion through the transparency of the switching unit transparency. Example 2:

The present embodiment provides a display apparatus 2, comprising: a transparent reflecting means 1, which has a display surface 13 and the opposite surface 14 opposite to each other; the display unit 2, the content of which is projected to the reflective display unit 1, on the opposite surface 14; transmission scattered switching unit 9, as shown, which is disposed on the opposite surface 14 of the reflecting unit 9 can be switched between a transparent state and scattering state diffusion through the switching unit.

For example, through the switching unit 9 comprises a scattering polymer dispersed liquid crystal film (Polymer Dispersed Liquid Crystal, PDLC), and a control electrode for polymer dispersed liquid crystal film state (not shown). Polymer-dispersed liquid crystal film is a polymer matrix (e.g., which is solid) uniformly dispersed in fine droplets of the liquid crystal film is formed.

PDLC film was chosen because of its scattering state and a transparent state having two states. Specifically, in a scattering state, when light is incident on the polymer dispersed liquid crystal film, since the effective refractive index of the light through the liquid crystal droplets vary greatly by the effective refractive index of the polymer, in light of the liquid crystal droplets and the polymer multiple reflection and refraction at the interface, the outgoing light and a scattering state, then the PDLC film exhibits an opaque state; when an electric field is applied in a polymer-dispersed liquid crystal film, liquid crystal molecules are oriented along the electric field, if the selected liquid polymer with refractive index equal or nearly equal, the polymer light ^: reflection and refraction of the liquid crystal film is no longer occurring, but directly out of the transmission, then the PDLC film exhibits a transparent state; removed when an external electric field, the liquid crystal droplet under the action of the elastic energy of the matrix and restored to the original uniform dispersion state in which the recovery scattering polymer dispersed liquid crystal film state. Visible, polymer dispersed liquid crystal film having electrically-controlled optical switching characteristics under electric fields, and, by varying the size of the applied electric field, it is possible to control the degree of orientation of the liquid crystal molecules (i.e. change the degree of light scattering), thereby changing the polymer dispersion the degree of transparency of the liquid crystal film, thereby changing the transparency of the display device.

In the present embodiment, the control field of polymer dispersed liquid crystal film is achieved by the electrode, the electrode may be disposed at both ends of the polymer dispersed liquid crystal film, although other ways may also be designed, as long as a polymer dispersed liquid crystal film to achieve applying an electric field. It will be appreciated that the electrode may be a transparent electrode (e.g., electrode ΙΤΟ).

9 of the present embodiment may be, for example, polymer dispersed liquid crystal film in Example scattered through the switching unit, but may also be presented using a transparent polymer dispersed state of the liquid crystal panel, only polymer-dispersed liquid crystal panel larger volume, thin display device is not conducive to design.

In one example, the polymer dispersed liquid crystal film is in its transparent state, the liquid crystal droplets, the refractive index of the same polymer matrix. Because at this time, the polymer ^: a liquid crystal film liquid crystal droplets and the polymer matrix without significant optical interface, constitute a substantially uniform medium, the incident light is hardly scattered, polymer dispersed liquid crystal film is transparent, transparency than high.

2, the display content of the display unit 2 is projected onto the opposite surface of the reflection unit 14 1, because the light reflection occurs on the opposite surface 14, so that the human eye can see the display 5 on the reflection unit 1 Content. The display unit 2 may be a liquid crystal display or an organic light emitting diode display, of course, also meet the requirements of the other screen, not difficult to understand, the higher the resolution of the display unit 2, the better the display is a display device, the clearer .

In one example, the display means further comprises means for displaying the contents of the display unit 2 is projected onto the reflecting unit 3 on the projection unit 141 of the opposing surface. That is, the effect of the projection unit 3 is a display content unit 2 is projected onto the opposite surface 14, as long as this purpose can be achieved to meet the design requirements.

As shown, the projection unit 23 may include at least one separate lens, wherein the projection unit 3 may be a lens may be a lens group. Was chosen as a projection lens or lens group unit 3, because we distance (from the display unit 2 to the projection unit 3) and a positional relationship between the focal length (focal length of a lens or a lens group) by adjusting the composition, the projection surface may vary in opposite the size of the displayed content on the 14, to meet our demand for different size of the display device.

It will be appreciated that the specific design of the lens and an optical path can be designed in various ways, are not repeated here, so long as the contents of the display unit 2 is projected to the opposing face of conformity to an embodiment of the present invention 14.

It is further noted that the display content of the display unit 2 is projected by the projection unit 3 when the opposing surface of the upper reflecting unit 141, and a certain distortion may occur, thus to ensure the display effect, it is necessary for the display unit 2 pixel on a certain repair, repair this correction is called, the specific needs of a particular design in the form of correction depending on the situation, not limited in the present embodiment.

In one example, shown in Figure 3, a plate-shaped reflector unit, the projection unit 3 into the surface of the reflecting unit 1, the light incident surface is a convex surface. That is, when the reflecting plate-shaped when the unit 1 is to be increased without a separate lens or a lens group as a projection unit 3, while the surface directly into the processing reflecting unit 1, which is formed by the projection so that the contents of the display unit 2 convex surface 14 on the opposing face.

2, shown in FIG reflection unit 31 is plate-shaped, in fact, the unit 1 may also be a reflective transflective film. The reflectance of the transflective film / transmittance is fixed, the transparent display can be achieved. In this case, however, the projection unit 3 may be at least one separate lens, because the transflective film is thin, the surface is not suitable for processing pairs.

Obviously, each of the above embodiments the display device may further include a driving circuit of a polymer dispersed liquid crystal film, to the display control circuit and the power supply unit of the input signal, which may be provided separately disposed or integrated, which is not defined.

It will be appreciated that the above embodiments are merely to illustrate exemplary embodiments of the present invention, the principles of embodiments of the employed, however, embodiments of the present invention is not limited thereto. Those of ordinary skill in the art, without departing from the spirit and essence of the embodiments of the present invention, can make various changes and modifications, such variations and modifications are also within the protection scope of the present invention.

Claims

Claims
1. A display device, comprising:
A transparent reflecting means, the reflecting means having a display surface and an opposite facing surface;
A display unit, the display content of the display unit is projected onto the opposite surface of the reflector unit; and
Through scattering switching unit which is provided on opposite sides of said reflecting unit, and the unit can be switched between a transparent state and scattering through the scattering state is switched.
The display device according to claim 1, wherein said switching unit includes an electrode through scattering polymer dispersed liquid crystal film, and for controlling the state of the polymer dispersed liquid crystal film.
The display device according to claim 2, wherein said electrode is a transparent electrode.
4. A display device as claimed in claim 2, wherein, in the polymer ^: a liquid crystal film, the liquid crystal droplets evenly distributed in the organic polymer matrix, the polymer dispersed liquid crystal film in a transparent state, the said liquid crystal droplets, the refractive index of the same polymer matrix.
The display device according to claim 1, further comprising:
The content display unit for displaying projected to an opposite side of the projection unit reflecting unit.
The display device according to claim 5, wherein the reflecting means is a plate, said projection unit comprises a light incident surface of said reflecting unit, the light incident surface is a convex surface.
The display device according to claim 5, wherein said projection unit comprises at least one separate lens.
The display device according to claim 1, wherein the reflecting means is a plate-like, or is a transflective film.
9. The display device according to any one of claim 8, wherein the display unit is a liquid crystal display or an organic light emitting diode display.
PCT/CN2013/085270 2013-05-27 2013-10-16 Display device WO2014190656A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN 201310201513 CN103323972B (en) 2013-05-27 2013-05-27 The display device
CN201310201513.4 2013-05-27

Publications (1)

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WO2014190656A1 true true WO2014190656A1 (en) 2014-12-04

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Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
CN103323972B (en) * 2013-05-27 2016-12-28 京东方科技集团股份有限公司 The display device
CN106292017A (en) * 2015-06-05 2017-01-04 中兴通讯股份有限公司 Deflection device, intelligent terminal, intelligent terminal setting method and display method
CN105676457A (en) * 2016-04-08 2016-06-15 吕佩剑 Head-mounted display device with multiple flight point views
CN106488208A (en) * 2017-01-03 2017-03-08 京东方科技集团股份有限公司 Display device and display method

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CN1493474A (en) * 2002-09-11 2004-05-05 奥博特瑞克斯株式会社 Composite display and driving method thereof
US20100091221A1 (en) * 2008-10-15 2010-04-15 Samsung Electronics Co., Ltd. Reflective display panel and device
WO2012037290A2 (en) * 2010-09-14 2012-03-22 Osterhout Group, Inc. Eyepiece with uniformly illuminated reflective display
CN103323972A (en) * 2013-05-27 2013-09-25 京东方科技集团股份有限公司 The display device

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KR101149150B1 (en) * 2007-07-11 2012-05-25 니폰샤신인사츠가부시키가이샤 Decoration board for case and case
JP4719283B2 (en) * 2009-03-27 2011-07-06 ソニー・エリクソン・モバイルコミュニケーションズ株式会社 Display device and the mobile terminal
CN102866526B (en) * 2012-09-21 2016-08-03 京东方科技集团股份有限公司 The display device

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
CN1493474A (en) * 2002-09-11 2004-05-05 奥博特瑞克斯株式会社 Composite display and driving method thereof
US20100091221A1 (en) * 2008-10-15 2010-04-15 Samsung Electronics Co., Ltd. Reflective display panel and device
WO2012037290A2 (en) * 2010-09-14 2012-03-22 Osterhout Group, Inc. Eyepiece with uniformly illuminated reflective display
CN103323972A (en) * 2013-05-27 2013-09-25 京东方科技集团股份有限公司 The display device

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Publication number Publication date Type
CN103323972A (en) 2013-09-25 application
CN103323972B (en) 2016-12-28 grant

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