WO2019136669A1 - Film anti-indiscrétion, écran d'affichage anti-indiscrétion, et dispositif de préparation d'un film anti-indiscrétion - Google Patents

Film anti-indiscrétion, écran d'affichage anti-indiscrétion, et dispositif de préparation d'un film anti-indiscrétion Download PDF

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Publication number
WO2019136669A1
WO2019136669A1 PCT/CN2018/072268 CN2018072268W WO2019136669A1 WO 2019136669 A1 WO2019136669 A1 WO 2019136669A1 CN 2018072268 W CN2018072268 W CN 2018072268W WO 2019136669 A1 WO2019136669 A1 WO 2019136669A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
optical conversion
louver
transparent conductive
layer
Prior art date
Application number
PCT/CN2018/072268
Other languages
English (en)
Chinese (zh)
Inventor
杨捷
赵冬梅
Original Assignee
深圳市前海威斯明科技有限公司
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
Application filed by 深圳市前海威斯明科技有限公司 filed Critical 深圳市前海威斯明科技有限公司
Priority to CN201880000011.6A priority Critical patent/CN110268305A/zh
Priority to PCT/CN2018/072268 priority patent/WO2019136669A1/fr
Publication of WO2019136669A1 publication Critical patent/WO2019136669A1/fr

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Classifications

    • 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

Definitions

  • Anti-peep film and anti-peep screen and device for preparing anti-peep film are provided.
  • the present invention relates to the field of anti-spy display technology, and more particularly to an anti-spy film and a peep prevention display device and an apparatus for preparing a peep prevention film.
  • the first fixing method is to directly attach the anti-peep film to the screen through the adhesive layer, which cannot be Switch between the anti-peep and non-peep-proof modes;
  • the second fixed method is to insert the anti-spy film into the hanging tab with the chute on the screen frame, and remove the anti-spy film from the hanging piece to switch In the non-peep-proof mode, the user is inconvenient to use in such a fixed manner, and the removed anti-peep film is easily lost.
  • An object of the present invention is to provide an anti-spy film, a peep-proof display, and a device for preparing a peep-proof film, which are used to solve the anti-spy mode of an electronic device with anti-spy function in the prior art. And non-peep-proof mode is inconvenient technical problem.
  • a privacy film including an optical conversion film and a louver film laminated with the optical conversion film, the louver film including a louver structure, the louver structure including alternating light shielding
  • the light exiting portion has a set light exiting direction
  • the optical conversion film includes a first transparent conductive layer, a second transparent conductive layer, and the first transparent conductive layer and the second transparent conductive layer.
  • the photoelectric switch layer is switched between a transparent state and a scattering state under the control of the first transparent conductive layer and the second transparent conductive layer.
  • the louver film further includes a first substrate, and the louver structure is in contact with the first substrate. Further, the louver film may be curved or curled.
  • optical conversion film may be bent or curled.
  • the photoelectric switch layer includes a glue layer and liquid crystal droplets distributed in the glue layer.
  • a switch is disposed between the first transparent conductive layer and the second transparent conductive layer, and when the switch is turned on, the first transparent conductive layer and the second transparent conductive layer An electric field is generated, the photoelectric switch layer is in a transparent state, and when the switch is turned off, the electric field disappears, and the photoelectric switch layer is in a scattering state.
  • the optical conversion film further includes a second substrate and a third substrate, wherein the second substrate is disposed on a surface of the first transparent conductive layer facing away from the photoelectric switch layer, The third substrate is disposed on a surface of the second transparent conductive layer facing away from the photoelectric switch layer.
  • the optical conversion film and the louver film are connected by an adhesive layer, and the adhesive layer is a liquid glue.
  • the optical conversion film and the louver film are connected by an adhesive layer, and the adhesive layer is a solid glue.
  • an anti-spy screen includes the anti-spy film, the anti-spy screen further includes a display panel and a backlight, and the anti-spy film is disposed on Between the display panel and the backlight;
  • the display panel is disposed between the anti-spy film and the backlight.
  • an apparatus for preparing a privacy film for preparing the above-mentioned anti-spy film comprising a dispensing mechanism, a pressing mechanism, a bonding mechanism, and curing a mechanism, the dispensing mechanism, the pressing mechanism, the bonding mechanism, and the curing mechanism are sequentially arranged, the dispensing mechanism deposits a liquid glue onto the optical conversion film, and the extrusion mechanism horizontally deposits the liquid glue to the optical On the conversion film, the bonding mechanism bonds the louver film to the surface of the optical conversion film with liquid glue, and the curing mechanism cures the liquid glue between the louver film and the optical conversion film.
  • the curing mechanism is an ultraviolet irradiation machine or a heating machine.
  • the pressing mechanism includes three pressing rollers which are sequentially abutted, and the optical conversion film passes through the abutment between the three pressing rollers.
  • the bonding mechanism includes two opposing pressing rollers, and the louver film covers the optical After switching the film, the louver film and the optical conversion film simultaneously pass through the abutment of the two squeeze rolls.
  • the apparatus for preparing a peep prevention film further includes a winding mechanism for winding up the peep prevention film output by the curing mechanism.
  • the anti-peep film provided by the present invention has the beneficial effects of: by providing an optical conversion film on the louver film, adjusting the optical conversion film to a transparent state, and switching to the anti-spy mode, When the optical conversion film is adjusted to the scattering state, it can be switched to the non-anti-peep mode, and the utility model can be switched between the two modes without taking out the anti-peep film, which is convenient for the user to use the electronic device with the anti-spy film in different scenes. device.
  • the anti-spy screen display provided by the present invention has the following advantages: the anti-spy screen display adopts the above-mentioned anti-spy film, and can switch between the anti-spy mode and the non-anti-spy mode, which is convenient for the user in different scenes. Use an electronic device with this anti-spy screen.
  • the beneficial effect of the apparatus for preparing a peeping film provided by the present invention is that: after the liquid glue is horizontally laid to the optical conversion film by providing a pressing mechanism, the louver film is attached to the optical conversion film, and then the ultraviolet ray is used.
  • the liquid glue is irradiated or heated to make the bonding between the louver film and the optical conversion film tighter, and there is no bubble between the two, and the display effect of the anti-peep display is good.
  • FIG. 1 is a schematic view of a privacy film in an embodiment of the present invention.
  • FIG. 2 is a schematic view showing an unpowered state of a photoelectric switch layer of a privacy film according to an embodiment of the present invention
  • FIG. 3 is a schematic view showing an energized state of a photoelectric switch layer of a privacy film according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of an anti-spy screen according to an embodiment of the present invention.
  • 5 is a schematic diagram of another anti-spy screen in the embodiment of the present invention.
  • 6 is a schematic view of an apparatus for preparing a privacy film according to an embodiment of the present invention.
  • FIG. 7 is a schematic view of another apparatus for preparing a privacy film in an embodiment of the present invention.
  • the anti-spy film includes an optical conversion film 1 and a louver film 2 laminated on the optical conversion film 1, and the optical conversion film 1 is a PDLC film, but is not limited to a PDLC film, a PDLC film, That is, Polymer Dispersed Liquid Crystal Film, a polymer dispersed liquid crystal film, is a film in a transparent and scattering state.
  • the PDLC film When the PDLC film is energized, it is in a transparent state, and parallel light passes through the optical conversion film 1, when the optical conversion film 1 does not When energized, it is milky white and scattered, and at this time, the light is scattered.
  • the louver film 2 is an ultra-fine louver film 2, and the louver film 2 includes a first substrate 21 and a louver structure that is in contact with the first substrate 21, or the louver film 2 includes a first substrate 21, a fourth substrate, and a louver structure disposed between the first substrate 21 and the fourth substrate and in contact with the first substrate 21 and the fourth substrate.
  • the louver structure includes the light shielding portion 23 and the light exit portion 24 which are alternately arranged, and the light exit portion 24 has In the set light-emitting direction, the angle of the light emitted from the light-emitting portion 24 is set to an angle range of 48° to 60° by setting the height of the light-emitting portion 24 and the width of the light-shielding portion 23, and the angle range of the light-emitting portion Can achieve better anti-peep effect.
  • the optical conversion film i includes a first transparent conductive layer n , a second transparent conductive layer 12, and a photoelectric switch layer 13 disposed between the first transparent conductive layer 11 and the second transparent conductive layer 12 and connected to the two, and a photoelectric switch The layer 13 is switched between a transparent state and a scattering state under the control of the first transparent conductive layer 11 and the second transparent conductive layer 12.
  • the anti-spy film is embedded in the anti-spy screen, and when the user needs to adjust the anti-spy screen to the anti-spy mode, the photoelectric switch layer 13 is converted into a transparent state, and the light emitted by the backlight of the anti-spy screen is firstly When the louver film 2 is irradiated, the light is irradiated toward the light shielding portion 23 and the light exit portion 24, and the light can only be emitted from the light exit portion 24.
  • the louver film 2 restricts the light to a set small angle, since the photoelectric switch layer 13 is in a transparent state, that is, The optical conversion film 1 is in a transparent state, and the light directly passes through the optical conversion film 1 and is emitted at a set small angle.
  • the user needs to face the set angle of the display screen to see the contents of the display screen, thereby realizing the prevention.
  • the narrow viewing angle function of the peek when the present invention needs to switch to the non-anti-peep mode, the photoelectric switch layer 13 is converted into a scattering state, that is, the optical conversion film 1 is in a scattering state, and is restricted by the louver film 2 to set a smaller angle.
  • the light is incident on the optical conversion film 1, and since the optical conversion film 1 is in a scattering state, it has a scattering effect on the light. Therefore, the exit angle of the light transmitted through the optical conversion film 1 is scattered in various directions, the exit angle of the light is no longer restricted, and the viewing angle of the anti-spy screen is enlarged, realizing a non-anti-peep state wide Perspective function.
  • the optical conversion film 1 is adjusted to a transparent state, and the optical conversion film 1 can be switched to the anti-spy mode, and the optical conversion film 1 can be adjusted to a scattering state, thereby switching to non-peep prevention.
  • the optical conversion film 1 can be bent or curled to a certain extent, and the adhesive layer 131 is made of a polymer material, and can be bent or curled to a certain extent, the first transparent conductive layer 11 and the second transparent conductive layer.
  • the material of 12 is PET (polyethylene terephthalate) or flexible conductive film (ITO film), and the temperature range is wide (-20 ⁇ 70 °C).
  • the optical conversion film 1 is in a wide temperature range. It has excellent physical and mechanical properties and can also be bent or curled to a certain extent.
  • the optical conversion film 1 is bendable, is suitable for use in a flexible screen, and is easy to roll up or roll up during the manufacturing process.
  • louver film 2 can be bent or curled to a certain extent, is suitable for use in a flexible screen, and is easy to roll up or roll up during the manufacturing process.
  • the photoelectric switch layer 13 includes a glue layer 131 and liquid crystal droplets 132 uniformly distributed in the glue layer 131.
  • the liquid crystal droplets 132 are nematic liquid crystal, and the glue layer 131 is a non-conductive polymer material.
  • the photoelectric switch layer 13 is opaque or translucent.
  • the optical axis of the liquid crystal droplets 132 is perpendicular to the first transparent conductive layer 11 and the second transparent conductive layer 12, that is, the direction of the electric field is the same.
  • the incident light does not scatter and the film is transparent.
  • a switch is disposed between the first transparent conductive layer 11 and the second transparent conductive layer 12, and the switch is used to turn on the first transparent conductive layer 11 and the second transparent conductive layer 12, When the two are turned on, an electric field is generated between the first transparent conductive layer 11 and the second transparent conductive layer 12, and the photoelectric switch layer 13 is in a transparent state. When the two are disconnected, the photoelectric switch layer 13 is in a scattering state.
  • the photoelectric switch layer 13 disposed between the first transparent conductive layer 11 and the second transparent conductive layer 12 is transparent in an electric field, and in the absence of an electric field, light The electric switch layer 13 is milky white, frosted, and is scattered to the light.
  • the state of the photoelectric switch layer 13 can be easily adjusted by the switch, so that the state of the anti-peep film can be easily switched.
  • the optical conversion film 1 further includes a second substrate 14 and a third substrate 15 disposed on a surface of the first transparent conductive layer 11 facing away from the photoelectric switch layer 13, the third substrate 15 is disposed on a surface of the second transparent conductive layer 12 facing away from the photoelectric switch layer 13.
  • the optical conversion film 1 and the louver film 2 are connected by an adhesive layer 4, and the adhesive layer 4 is a liquid glue.
  • the liquid glue is bonded between the optical conversion film 1 and the louver film 2 by liquid glue, and the liquid glue needs to be cured by ultraviolet rays or heating. Liquid glue is less affected by temperature and has a wider temperature range acceptable for processing.
  • the optical conversion film 1 and the louver film 2 are connected by an adhesive layer 4, and the adhesive layer 4 is a solid glue.
  • the solid glue is generally an OCA optical glue, and the OCA optical glue has colorless transparency and light. The transmittance is above 90%, the bonding strength is good, it can be cured at room temperature or medium temperature, and it has the characteristics of small curing shrinkage.
  • the optical conversion film 1 and the louver film 2 are bonded by a solid glue, and the solid glue is cured without being subjected to ultraviolet rays or heat, and the solid glue is cured at room temperature, and the bonding efficiency is improved.
  • an embodiment of the present invention further provides an anti-spy screen, including the anti-spy film, the anti-spy screen further includes a display panel 5 and a backlight 6 , and the display panel 5 is an LCD display ( a liquid crystal display), the anti-spy film is disposed between the display panel 5 and the backlight 6;
  • the display panel 5 is an LCD display ( a liquid crystal display)
  • the anti-spy film is disposed between the display panel 5 and the backlight 6;
  • the display panel 5 is disposed between the privacy film and the backlight 6.
  • a privacy film is provided in the anti-spy screen, and the utility model can be switched between the two modes without taking out the anti-spy film, so that the user can use the electronic device provided with the anti-spy screen in different scenes.
  • an embodiment of the present invention further provides an anti-spy screen, including the anti-spy film, the anti-spy screen further includes a self-illuminating display panel 7, and the anti-spy film is disposed on the self-illuminating display panel 7. on.
  • the self-luminous display panel 7 is an OLED display (a display made of an organic electroluminescent diode).
  • a privacy film is provided in the anti-spy screen, and the utility model can be switched between the two modes without taking out the anti-spy film, so that the user can use the electronic device provided with the anti-spy screen in different scenes.
  • an embodiment of the present invention further provides an apparatus for preparing a peep prevention film, and a device for preparing a peep prevention film.
  • the dispensing mechanism 101, the pressing mechanism 102, the bonding mechanism 103, and the curing mechanism 104, the dispensing mechanism 101, the pressing mechanism 102, the bonding mechanism 103, and the curing mechanism 104 are sequentially arranged, and the dispensing mechanism 101 drops the liquid glue to On the optical conversion film 1, the pressing mechanism 102 horizontally spreads the liquid glue onto the optical conversion film 1, and the bonding mechanism 103 bonds the louver film 2 to the surface of the optical conversion film 1 with liquid glue, and the curing mechanism 104 cures the louver A liquid glue between the film 2 and the optical conversion film 1.
  • the above process for preparing the anti-peep film may also apply the liquid glue to the louver film 2, and the optical conversion film 1 is attached to the louver film 2.
  • the curing mechanism 104 is an ultraviolet ray irradiator or a heating machine, and the curing mechanism 104 cures the liquid glue by ultraviolet curing or heat curing.
  • the pressing mechanism 102 includes three pressing rollers which are sequentially abutted, and the three pressing rollers through which the optical conversion film 1 passes are adjacent to each other.
  • the shape of the pressing roller is a cylinder, the cylindrical side faces of the pressing roller abut each other, and each two adjacent pressing rollers rotate in opposite directions, and the pressing roller winds the optical conversion film 1 and presses the liquid glue To the optical conversion film 1, the liquid glue which is pressed by the pressing rolls is uniformly laid horizontally on the optical conversion film 1, so that the light emitted through the anti-spy film is uniform.
  • the fitting mechanism 103 includes two abutting pressing rollers, and after the louver film 2 is covered by the optical conversion film, both pass through the abutting portions of the two pressing rollers. Specifically, the cylindrical sides of the two squeeze rolls are abutted, and the two squeeze rolls are rotated in opposite directions, and the squeeze roll winds and presses the louver film 2 together with the optical conversion film 1.
  • the apparatus for preparing the privacy film further includes a winding mechanism 105, and the winding mechanism 105 is disposed behind the curing mechanism 104.
  • the anti-peep film after the bonding is wound up in the winding mechanism 105 facilitates the transfer of the anti-peep film.
  • the louver film 2 is attached to the optical conversion film 1, and the liquid glue is cured by ultraviolet irradiation or heating to make the louver film 2
  • the bonding between the optical conversion film 1 and the optical conversion film 1 is tighter, and there is no bubble between the two, and the display effect of the anti-peep display is good.
  • an embodiment of the present invention further provides an apparatus for preparing a peep prevention film.
  • the device for preparing a peep prevention film includes a glue applicator 201, a bonding mechanism 202, a glue applicator 201, and a bonding mechanism 202.
  • the pasting mechanism 201 applies a solid glue to the optical conversion film 1, and the bonding mechanism 202 bonds the louver film 2 to the surface of the optical conversion film 1 with a solid glue.
  • the applicator mechanism 201 includes two abutting pressing rolls, and the solid glue covers the optical conversion film 1 after the two pressing rolls are adjacent to each other.
  • the shape of the squeezing roller is a cylinder
  • the cylindrical sides of the two squeezing rollers are offset, and the two squeezing rollers are rotated in opposite directions, and the squeezing roller entangles and presses the solid glue together with the optical conversion film 1 .
  • the bonding mechanism 202 includes two abutting pressing rollers, and after the louver film 2 is covered by the optical conversion film 1, both pass through the abutting portions of the two pressing rollers. Specifically, the cylindrical sides of the two squeeze rolls are abutted, and the two squeeze rolls are rotated in opposite directions, and the squeeze roll winds up and presses the louver film 2 together with the optical conversion film 1.
  • the device for preparing a privacy film provided by the embodiments of the present invention has the following advantages:
  • the optical conversion film 1 and the louver film 2 are bonded by using a solid glue, and the solid glue is cured at room temperature without UV or heat curing, and the bonding efficiency is improved.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

L'invention concerne un film anti-indiscrétion, un écran d'affichage anti-indiscrétion, et un dispositif pour préparer un film anti-indiscrétion. Le film anti-indiscrétion comprend un film de conversion optique (1) et un film d'obturateur (2) disposé au-dessus et relié au film de conversion optique (1). Le film d'obturateur (2) comprend une structure d'obturateur, la structure d'obturateur comprenant des parties de protection contre la lumière (23) et des parties de sortie de lumière (24) qui sont disposées en alternance. Le film de conversion optique (1) comprend une première couche conductrice transparente (11), une seconde couche conductrice transparente (12), et une couche de commutation photoélectrique (13) disposée entre la première couche conductrice transparente (11) et la seconde couche conductrice transparente (12) et connectée à celles-ci, la couche de commutation photoélectrique (13) pouvant passer d'un état transparent à un état de diffusion. Le présent film anti-indiscrétion peut rapidement commuter entre un mode anti-indiscrétion et un mode autre qu'anti-indiscrétion, ce qui facilite l'utilisation d'un dispositif électronique par un utilisateur dans différentes scènes.
PCT/CN2018/072268 2018-01-11 2018-01-11 Film anti-indiscrétion, écran d'affichage anti-indiscrétion, et dispositif de préparation d'un film anti-indiscrétion WO2019136669A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201880000011.6A CN110268305A (zh) 2018-01-11 2018-01-11 一种防窥膜及防窥显示屏及制备防窥膜的设备
PCT/CN2018/072268 WO2019136669A1 (fr) 2018-01-11 2018-01-11 Film anti-indiscrétion, écran d'affichage anti-indiscrétion, et dispositif de préparation d'un film anti-indiscrétion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/072268 WO2019136669A1 (fr) 2018-01-11 2018-01-11 Film anti-indiscrétion, écran d'affichage anti-indiscrétion, et dispositif de préparation d'un film anti-indiscrétion

Publications (1)

Publication Number Publication Date
WO2019136669A1 true WO2019136669A1 (fr) 2019-07-18

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PCT/CN2018/072268 WO2019136669A1 (fr) 2018-01-11 2018-01-11 Film anti-indiscrétion, écran d'affichage anti-indiscrétion, et dispositif de préparation d'un film anti-indiscrétion

Country Status (2)

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CN (1) CN110268305A (fr)
WO (1) WO2019136669A1 (fr)

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CN116360135A (zh) * 2023-05-24 2023-06-30 惠科股份有限公司 防窥结构及电子显示设备
CN116600610A (zh) * 2023-05-25 2023-08-15 惠科股份有限公司 显示面板及显示装置

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CN111290657B (zh) * 2020-01-16 2022-06-21 业成科技（成都）有限公司 显示装置和电子设备

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CN106597727A (zh) * 2017-01-11 2017-04-26 北京大学 一种透射光角度范围可调控的电控调光膜
CN106802499A (zh) * 2016-08-30 2017-06-06 苏州汉朗光电有限公司 防窥显示器

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US9421572B2 (en) * 2014-06-25 2016-08-23 Sumitomo Chemical Company, Limited Optically absorptive anisotropic film, three-dimensional optically absorptive anisotropic film and method for producing the same
CN205588747U (zh) * 2015-12-21 2016-09-21 侯兴福 一种片或膜材料生产线及片或膜材料的表面覆膜设备
CN105549236A (zh) * 2016-02-19 2016-05-04 京东方科技集团股份有限公司 可切换防窥装置及其制备方法、显示装置
CN106154604A (zh) * 2016-08-19 2016-11-23 京东方科技集团股份有限公司 防窥膜及防窥系统、显示基板及显示装置
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Publication number Priority date Publication date Assignee Title
CN116360135A (zh) * 2023-05-24 2023-06-30 惠科股份有限公司 防窥结构及电子显示设备
CN116360135B (zh) * 2023-05-24 2023-08-18 惠科股份有限公司 防窥结构及电子显示设备
CN116600610A (zh) * 2023-05-25 2023-08-15 惠科股份有限公司 显示面板及显示装置
CN116600610B (zh) * 2023-05-25 2024-05-17 惠科股份有限公司 显示面板及显示装置

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