WO2019019575A1 - 光控装置及其制造方法 - Google Patents

光控装置及其制造方法 Download PDF

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Publication number
WO2019019575A1
WO2019019575A1 PCT/CN2018/073403 CN2018073403W WO2019019575A1 WO 2019019575 A1 WO2019019575 A1 WO 2019019575A1 CN 2018073403 W CN2018073403 W CN 2018073403W WO 2019019575 A1 WO2019019575 A1 WO 2019019575A1
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WO
WIPO (PCT)
Prior art keywords
layer
liquid crystal
photo
crystal polymer
light control
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2018/073403
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English (en)
French (fr)
Inventor
尤杨
吕振华
杨瑞智
王瑞勇
邱云
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
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Publication date
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Publication of WO2019019575A1 publication Critical patent/WO2019019575A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
    • 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Definitions

  • the present disclosure relates to the field of light control technology.
  • the present disclosure relates to a light control device and a method of fabricating the same.
  • touch technology is widely used.
  • the touch technology is combined with a display device to obtain various touch display devices.
  • the touch panel may be in a position that is not convenient for direct touch.
  • the area selection and control methods are mostly contact control, including resistive touch and capacitive touch. The reason is that the display screen is small and the distance is close, and the finger or stylus can be used. Easy to implement control.
  • a light control apparatus comprising:
  • the touch layer generates a corresponding control signal according to a pressed position thereof
  • the photodeformation layer being located on the touch layer
  • the photodeformation layer is configured to deform when illuminated by light of a particular wavelength such that the touch layer is stressed such that the controlled device is controlled by a light illumination location.
  • the light control device includes a display screen
  • the touch layer is a transparent touch layer, and the transparent touch layer is located on the display screen.
  • the photo-deformation layer is a transparent photo-deformation layer, and the transparent photo-deformation layer is located on a side of the transparent touch layer away from the display screen.
  • the display screen may display an image prompting a position of the touch layer to be pressed.
  • the photodeformation layer comprises a photomorphic liquid crystal polymer.
  • the photodeformation layer includes a photodeformation liquid crystal polymer groove array, and a plurality of photoinduced liquid crystal polymer groove intervals in the photodeformation liquid crystal polymer groove array The arrangement wherein the photo-induced liquid crystal polymer recess contains the photo-induced liquid crystal polymer.
  • the light control device includes a display screen
  • the touch layer is a transparent touch layer, and the transparent touch layer is located on the display screen.
  • the photo-deformation layer is a transparent photo-deformation layer, and the transparent photo-deformation layer is located on a side of the transparent touch layer away from the display screen.
  • the display screen may display an image prompting a position of the touch layer to be pressed
  • the area of each of the photomorphic liquid crystal polymer grooves is less than or equal to the area of each pixel of the display screen.
  • the photo-induced liquid crystal polymer is disposed to be oriented in a direction parallel to the touch layer when irradiated with light of a specific wavelength, and is subjected to light of a specific wavelength.
  • the liquid crystal phase changes to an isotropic phase upon irradiation.
  • the photomorphic liquid crystal polymer includes a liquid crystal polymer molecule having a photoisomer group, and the photoisomerism is photoisomerization occurring under irradiation of light of a specific wavelength. The deformation of the photoinduced liquid crystal polymer is caused.
  • the photoisomer group includes an azo group.
  • the photomorphic liquid crystal polymer comprises an acrylate type azobenzene liquid crystal polymer or an epoxy type azobenzene liquid crystal polymer.
  • the wavelength of the specific wavelength of light is in the range of 330 nm to 400 nm, and the illumination intensity ranges from 200 mW/cm 2 or more, and the irradiation duration ranges from longer than 400 ms.
  • the photomorphic liquid crystal polymer comprises a photoinduced liquid crystal elastomer.
  • the transparent photo-deformation layer further includes a film-forming material, wherein the photo-induced liquid crystal polymer in the transparent photo-deformation layer has a weight ratio ranging from 30% to 40%.
  • the film forming material comprises at least one of a polyester, a polyolefin, and a cellulosic polymer.
  • the transparent photo-deformation layer has a thickness of 10 ⁇ m to 50 ⁇ m.
  • the transparent touch layer is a resistive touch layer or a piezoelectric touch layer.
  • the display panel further includes a hard material layer covering the transparent photo-deformation layer.
  • a display device comprising the light control device with a display screen of any of the above is provided.
  • a method of optically controlling a light control device as described above comprising:
  • the step of illuminating the photodeformation layer with light of a specific wavelength is a specific wavelength.
  • the transparent photo-deformation layer is formed on a side of the transparent touch layer away from the display screen.
  • the transparent photo-deformation layer includes a photo-induced liquid crystal polymer groove array, and a plurality of photo-induced liquid crystal polymers in the photo-induced liquid crystal polymer groove array are spaced apart The grooves are spaced apart, wherein the method includes filling a photomorphic liquid crystal polymer into the photomorphic liquid crystal polymer grooves.
  • FIG. 1 is a schematic view exemplarily showing a light control device according to an embodiment of the present disclosure.
  • FIG. 2 is a schematic structural view exemplarily showing a light-controlled display panel according to an embodiment of the present disclosure.
  • FIG. 3 is a schematic diagram of the isomerization of an azobenzene group contained in a photodeformation liquid crystal polymer used under light irradiation, according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic illustration of the transition of a photomorphic liquid crystal polymer used from a liquid crystal phase to an isotropic phase under light illumination, in accordance with an embodiment of the present disclosure.
  • FIG. 5 is a schematic view exemplarily showing that a photodeformation layer of a light-controlled display panel according to an embodiment of the present disclosure is deformed under light irradiation to generate pressure on the touch layer.
  • FIG. 6 is a schematic view exemplarily showing deformation of a touch layer of a resistive touch control panel under pressure.
  • FIG. 7 is a schematic view exemplarily showing a photo-induced liquid crystal polymer groove array of one embodiment of the present disclosure.
  • FIG. 8 is a schematic view exemplarily showing deformation of a groove containing a photo-induced liquid crystal polymer according to an embodiment of the present disclosure under light irradiation.
  • the present disclosure is mainly described by way of an example in which a light control display panel is used as a light control device.
  • the light control device of the present disclosure may also not include a display function.
  • it may comprise a light control structure consisting of a touch layer and a photomorphic layer on a fixed background.
  • the touch layer and the photo-deformation layer are transparent to realize a display function.
  • the touch layer is sometimes referred to as a touch screen.
  • the control pen and the illuminating pen can be used interchangeably.
  • Specific wavelengths are used interchangeably with specific wavelengths.
  • the present disclosure is exemplified by a photo-induced liquid crystal polymer, but the present disclosure is not limited thereto, and any material that can be photo-deformed by light of a specific wavelength can be used to form a transparent photo-deformation layer in the display panel of the present disclosure, as long as The formed transparent photo-deformation layer can be deformed when illuminated by light of a specific wavelength, and the transparent touch layer can detect the position of the deformation, thereby controlling the display screen.
  • a light control apparatus including:
  • the touch layer generates a corresponding control signal according to a pressed position thereof
  • the photodeformation layer being located on the touch layer
  • the photodeformation layer is configured to deform when illuminated by light of a particular wavelength such that the touch layer is stressed such that the controlled device is controlled by a light illumination location.
  • the principle of the light control device of the present disclosure is to control the controlled device by light illumination.
  • the controlled device described herein is the device that the user wants to control.
  • the controlled device can be a device for implementing the functionality of the light control device.
  • the controlled device when the light control device is a sound controlled by a light control, the controlled device may be a speaker or the like; when the light control device is a television controlled by a light control, the controlled device may be a television screen, a speaker, or the like.
  • the present invention is not limited to the controlled device as long as it can be controlled according to the control signal generated by the touch layer.
  • the communication between the touch layer and the controlled device can be wired or wireless.
  • the deformation caused by the light irradiation of the photodeformation layer presses the touch layer so that the touch layer is touched.
  • the function of the touch layer is to generate corresponding different control signals according to different pressed positions.
  • the controlled device can be controlled based on the different control signals.
  • FIG. 1 is a schematic view exemplarily showing a light control device according to an embodiment of the present disclosure.
  • a photo-deformation layer 10 is disposed on the touch layer 20.
  • the light L of a specific wavelength illuminates the photodeformation layer 10
  • deformation occurs at a position where the light is irradiated.
  • This deformation causes the touch layer 20 to be pressed at this position, thereby generating a control signal corresponding to the pressed position. That is to say, pressing at different positions of the touch layer 20 will generate different signals, and the generated signals correspond to the pressed positions.
  • the specific signal generated when the specific position of the touch layer 20 is pressed is selected as a control signal, and the controlled device is specifically controlled based on the occurrence of the specific control signal.
  • the controlled device can be controlled by applying pressure to the touch layer.
  • a scheme for controlling a controlled device using a touch layer is known. An example of this is the use of a touch display panel including a touch layer to control various controlled devices such as a screen, a speaker, a camera, and the like.
  • Those skilled in the art can design various specific schemes for controlling the controlled device according to the control signals of the touch layer.
  • the control signal can be used directly to control the controlled device, or it can be processed and calculated by the intermediate processing device to control the controlled device.
  • the control signals can be transmitted wired or wirelessly.
  • various touch devices including a touch layer can be implemented by the light control device of the present invention, that is, various controlled devices that can be controlled by touch control can be controlled by the light control method of the present invention.
  • a typical embodiment of the light control device of the present disclosure is a light-controlled display panel that includes a display screen.
  • the touch layer is a transparent touch layer, and the transparent touch layer is located on the display screen, and
  • the photo-deformation layer is a transparent photo-deformation layer, and the transparent photo-deformation layer is located on a side of the transparent touch layer away from the display screen.
  • the display screen may display an image prompting a position of the touch layer to be pressed.
  • the function of the display screen includes displaying an image for prompting the user of the location of the touch layer to be stressed. For example, by displaying a particular pattern at a particular location on the screen, prompting the user to pressurize the touch layer there can send a particular control signal.
  • the display screen can also display images that are not related to light control at the same time.
  • the display screen itself can be a controlled device. That is, by light control, the state of the display screen itself, such as brightness, contrast, an image displayed thereon, and the like are changed.
  • the controlled device may not be a display screen, but may be, for example, a speaker, a printer, a network adapter, or the like.
  • the present disclosure adds a photodeformation layer on a common resistive or piezoelectric touch display unit, the photodeformation layer is deformed when illuminated by light of a specific wavelength, and the touch of the resistive or piezoelectric touch display unit
  • the control layer detects the position of the deformation, thereby controlling the controlled device such as the display screen, thereby implementing the function of the light control.
  • both the touch layer and the photodeformation layer are transparent.
  • the touch layer and the photo-deformation layer are sometimes described below with a transparent touch layer and a photo-deformation layer.
  • Light of a specific wavelength can be realized by a simple illuminating pen such as a laser pen, which emits light of a specific wavelength such as a laser when operation control is required, and emits light of other wavelengths or does not emit light when it is not necessary to control only the indication.
  • a simple illuminating pen such as a laser pen, which emits light of a specific wavelength such as a laser when operation control is required, and emits light of other wavelengths or does not emit light when it is not necessary to control only the indication.
  • the photodeformation layer may comprise a photomorphic liquid crystal polymer.
  • the photomorphic liquid crystal polymer may comprise an acrylate type azobenzene liquid crystal polymer or an epoxy type azobenzene liquid crystal polymer, and may be, for example, a photomorphic liquid crystal elastomer.
  • the photodeformation layer may have a thickness of from 10 ⁇ m to 50 ⁇ m.
  • the photodeformation liquid crystal polymer in the photodeformation layer such as a photodeformation liquid crystal elastomer, such that it is only sensitive to the wavelength of a particular light, it can be deformed, and the erroneous operation of the ambient light can be eliminated.
  • the emitted light may be ultraviolet light, infrared light, or visible light.
  • the photodeformation layer is made of a photomorphic liquid crystal polymer which is deformable under irradiation of light of a specific wavelength.
  • the photodeformation layer is made of a photodeformation liquid crystal polymer which is deformable under ultraviolet light irradiation
  • the light emitted from the control pen is ultraviolet light.
  • the photodeformation layer is made of a photodeformable liquid crystal polymer which is deformable under irradiation of infrared light
  • the light emitted from the control pen is infrared light.
  • a specific wavelength of light or laser light capable of photodeforming a photo-induced liquid crystal polymer is sometimes referred to as light.
  • the photodeformation polymer material should have a chemical structure with a group capable of undergoing reversible photoisomerization reaction, such as cis-trans isomerization, such as azobenzene or stilbene; Such as benzoxanthene; there are reactions through cyclization, such as fulgic acid; there are reactions formed by ion pairs, such as triarylmethane derivatives; and through other reactions.
  • the material must also have liquid crystallinity, and the photodeformation liquid crystal polymer molecules can be on the main chain or on the side chains. Due to the ordered alignment of the liquid crystal, the photodeformation liquid crystal polymer molecules undergo a relatively uniform change under the action of light of a specific wavelength, and then undergo micro-to-macro deformation by coupling with the polymer chain.
  • the azodiphenylacetylene side group absorbs light energy under the irradiation of ultraviolet light.
  • the cis-trans isomerization causes a change in the alignment of the liquid crystal cell such that a portion of the layer that is irradiated with light of a specific wavelength is macroscopically deformed, such as bending, elongation, or the like.
  • the lightly crosslinked photodeformation liquid crystal polymer can obtain a photostriction with a deformation rate of 20%.
  • the polymer liquid crystal elastomer has both excellent properties of liquid crystal materials and characteristics of a polymer crosslinked network, and thus has good field responsiveness, molecular synergism and elasticity.
  • the photomorphic liquid crystal polymer may include a liquid crystal polymer molecule having a photoisomer.
  • the photoisomerism can be photoisomerized by irradiation of light of a specific wavelength to cause deformation of the photodeformation liquid crystal polymer.
  • the photoisomer may include an azo group.
  • the photomorphic liquid crystal polymer may comprise an acrylate type azobenzene liquid crystal polymer or an epoxy type azobenzene liquid crystal polymer.
  • the thickness of the photodeformation layer is from 10 ⁇ m to 50 ⁇ m
  • the wavelength of light of a specific wavelength ranges from 330 nm to 400 nm
  • illumination The intensity range is 200 mW/cm 2 or more
  • the irradiation duration ranges from longer than 400 ms.
  • the thickness of the photodeformation layer is about 20 ⁇ m
  • the wavelength of light is about 365 nm
  • the light intensity is about 200 mW/ With a cm 2 and an irradiation time of about 500 ms, a complete deformation can be formed.
  • the photodeformation layer can also include a film forming material.
  • the weight ratio of the photomorphic liquid crystal polymer in the photodeformation layer may range from 30% to 40%.
  • the film forming material can include at least one of a polyester, a polyolefin, and a cellulosic polymer.
  • the display panel may also include a layer of hard material.
  • a hard material can cover the photodeformation layer.
  • FIG. 2 is a schematic structural view exemplarily showing a light-controlled display panel according to an embodiment of the present disclosure.
  • the light-controlled display panel may include a transparent photo-deformation layer 10, a transparent touch layer 20, and a display screen 30.
  • the transparent touch layer 20 is located on the display screen 30.
  • the transparent photo-deformation layer 10 is located on a side of the transparent touch layer 20 away from the display screen 10.
  • the transparent photo-deformation layer 10 comprises a photo-induced liquid crystal polymer.
  • the photomorphic liquid crystal polymer includes a liquid crystal polymer molecule having a photoisomer group, and photoisomerism of the photoisomer group under irradiation of light of a specific wavelength causes deformation of the photodeformation liquid crystal polymer.
  • the photoisomer may include an azo group.
  • the photomorphic liquid crystal polymer may comprise an acrylate type azobenzene liquid crystal polymer or an epoxy type azobenzene liquid crystal polymer.
  • FIG. 3 is a schematic diagram of the isomerization of an azobenzene group contained in a photodeformation liquid crystal polymer used under light irradiation, according to an embodiment of the present disclosure.
  • the azobenzene group undergoes photoisomerization under the irradiation of the light L to cause a change in alignment, so that the macroscopic upper surface is a change in the shape of the photodeformation layer.
  • the underlying transparent touch layer can detect the position of the deformation, thereby controlling the controlled device such as the display screen.
  • the touch layer is a resistive touch layer
  • pressure is generated on the underlying resistive touch layer, which is equivalent to pressing the touch layer by a finger, thereby implementing light control instead of touch.
  • FIG. 4 is a schematic illustration of the transition of a photomorphic liquid crystal polymer used from a liquid crystal phase to an isotropic phase under light illumination, in accordance with an embodiment of the present disclosure.
  • the photomorphic liquid crystal polymer in the liquid crystal phase undergoes a transition to an isotropic phase under irradiation of light L, causing the oriented polymer backbone PM to become isotropic.
  • the photodeformable liquid crystal polymer layer When the photodeformable liquid crystal polymer layer is deformed, the underlying transparent touch layer can detect the position of the deformation, thereby controlling the controlled device such as the display screen.
  • FIG. 5 is a schematic view exemplarily showing that a photodeformation layer of a light-controlled display panel according to an embodiment of the present disclosure is deformed under light irradiation to generate pressure on the touch layer.
  • the light-controlled display panel may include a transparent photo-deformation layer 10, a transparent touch layer 20, and a display screen 30.
  • the transparent touch layer 20 is located on the display screen 30.
  • the transparent photo-deformation layer 10 is located on a side of the transparent touch layer 20 away from the display screen 10.
  • the transparent photo-deformation layer 10 is deformed when irradiated with light of a specific wavelength, and generates pressure on the underlying resistive touch layer 20, which is equivalent to pressing the touch layer 20 by a finger, thereby implementing light control instead of touch.
  • FIG. 6 is a schematic view exemplarily showing deformation of a touch layer of a resistive touch control panel under pressure.
  • the resistive touch control panel can include a resistive touch layer 20 and a display screen 30 thereunder.
  • the touch layer 20 is a multi-layer composite film which is made of a glass or hard plastic plate as a base layer, and is coated with a transparent oxidized metal (transparent conductive resistor) conductive layer, and is covered with an outer surface hardening treatment. Smooth, anti-scratch plastic layer.
  • the inner surface of the plastic layer is also coated with a coating.
  • the resistive touch screen may include a four-wire touch layer, a five-wire touch layer, a seven-wire touch layer, and an eight-line touch layer.
  • FIG. 7 is a schematic view exemplarily showing a photo-induced liquid crystal polymer groove array of one embodiment of the present disclosure.
  • the transparent photo-deformation layer 10 includes a photo-deformation liquid crystal polymer groove array, and a plurality of photo-induced liquid crystal polymer grooves 12 in the photodeformation liquid crystal polymer groove array are spaced apart by The spacer layers 14 are spaced apart.
  • the photodeformable liquid crystal polymer groove 12 houses a photo-induced liquid crystal polymer.
  • the area of each photomorphic liquid crystal polymer groove 12 is less than or equal to the area of each pixel of the display panel.
  • the display device can include a television.
  • the grooves 12 are shown as being square. However, the present disclosure is not limited thereto.
  • the recess 12 can be rectangular, circular or elliptical.
  • the material used to form the spacer layer may include polyimide or acryl.
  • the array of grooves may be a rectangular array such as a square array or a triangular array. The present disclosure is not particularly limited thereto.
  • FIG. 8 is a schematic view exemplarily showing deformation of a groove containing a photo-induced liquid crystal polymer according to an embodiment of the present disclosure under light irradiation.
  • the realization of such photobending is mainly because the surface layer 128 of the photodeformation liquid crystal polymer groove 12 has a large absorption of light, so that the photodeformation liquid crystal polymer molecules of the surface layer 128 such as azobenzene photoinduced liquid crystal polymer molecules A trans-cis to photochemically isomeric change occurs, and further causes a transition of the liquid crystal phase to the isotropic phase, while the azobenzene photoinduced liquid crystal polymer molecule of the groove body portion 130 remains in a trans conformation.
  • the difference in shape of the skin layer 128 and the body portion 130 causes the entire groove 12 to exhibit a downwardly curved behavior.
  • a 32-inch resistive four-wire touch panel having a resistive touch layer was assembled into a touch display of a comparative example.
  • a film is formed from polyimide on a side of the 32-inch resistive four-wire touch panel with the resistive touch layer away from the display screen, with a film thickness of 20 ⁇ m.
  • a film of a photo-induced liquid crystal polymer and a cellulose polymer is formed by filling, for example, by knife coating, wherein the photo-induced liquid crystal polymer is a transparent acrylate type azobenzene liquid crystal elastomer having a deformation rate It is 15% photostrictive, wherein the weight ratio of the photomorphic liquid crystal polymer to the cellulose polymer is 35:65, and the photomorphic liquid crystal polymer molecules are oriented parallel to the resistive touch layer.
  • a polyimide film having a photo-induced liquid crystal polymer contained in the groove was covered with a layer of a transparent hard material having a thickness of 20 ⁇ m to form a display panel having a transparent photo-deformation layer.
  • This display panel was assembled into the display of the embodiment in the same manner as the comparative touch display in place of the 32-inch resistive four-wire touch panel. It can be found that when the display screen of the embodiment is irradiated with the laser light having a wavelength of 365 nm at 200 mW/cm 2 for more than 500 ms, the display screen of the embodiment can be light-controlled by the laser, and the sensitivity of the light control is equivalent to that of the comparative example.
  • the touch screen uses the sensitivity of the finger touch, thereby realizing the light control instead of the touch.
  • the present disclosure can also provide a display device including the above-described light control display panel.
  • the present disclosure may also provide a method of manufacturing the above light control display panel, including:
  • the transparent touch layer on the display screen; forming a transparent photo-deformation layer on a side of the transparent touch layer away from the display screen.
  • the transparent photo-deformation layer is deformed when illuminated by light of a specific wavelength, and the transparent touch layer detects the position of the deformation, thereby controlling a controlled device such as a display screen.
  • the transparent photo-deformation layer comprises a photo-deformation liquid crystal polymer groove array, and the plurality of photo-induced liquid crystal polymer grooves in the photo-deformation liquid crystal polymer groove array are spaced apart by a spacer layer.
  • the photomorphic liquid crystal polymer recess contains a photo-induced liquid crystal polymer.
  • the photodeformable liquid crystal polymer can be filled, for example, into a photomorphic liquid crystal polymer recess.
  • the present disclosure may also provide a method of photo-controlling a display device as described above, the method comprising the step of illuminating a transparent photo-deformation layer with light of a specific wavelength.
  • the light of a specific wavelength may be a laser.
  • the laser light can illuminate a plurality of photo-induced liquid crystal polymer grooves depending on the laser used. That is, the spot of the laser on the transparent photodeformation layer can cover a plurality of photomorphic liquid crystal polymer grooves.
  • the display panel of the present disclosure, the manufacturing method thereof, the display device and the method for controlling the same can be used for light control of a large-sized display (such as a television) by a luminescent pen, thereby realizing control of long-distance and multi-person sharing, and the illuminating pen It has the advantages of being convenient to carry and sharing between different display devices.

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  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
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  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Position Input By Displaying (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种光控装置及其制造方法、利用该光控装置进行光控的方法，和包含该光控装置的显示装置，其中，光控装置包括：触控层（20），所述触控层（20）根据其受压的位置产生相应的控制信号，受控器件，所述受控器件可以基于所述控制信号受到控制，和光致形变层（10），所述光致形变层（10）位于所述触控层（20）上，其中所述光致形变层（10）被配置为在被特定波长的光照射时产生形变，使得所述触控层（20）受压，从而通过光照射位置控制所述受控器件。

Description

光控装置及其制造方法
相关申请的交叉引用
本公开要求2017年7月24日提交的中国专利申请号201710609171.8的优先权，其通过引用以其全部结合在此。
技术领域
本公开涉及光控技术领域。具体地，本公开涉及一种光控装置及其制造方法。
背景技术
当前，触控技术得到广泛应用。特别是，触控技术与显示器件结合，得到各种触控显示装置。
在一些应用场景中，触控面板可能处于不便于直接触摸的位置。
中小尺寸显示(手机、平板、电脑)中，区域选择和控制方式多为接触式控制，包括电阻触控、电容触控，其原因为显示屏幕小且使用距离近，手指或触控笔即可方便实现控制。
在大尺寸显示(电视等)时，使用场合多为远距离且多人共享，手指触控极为不方便，目前控制方式多为遥控器等软件以实现。但是，遥控器具有携带不便、不同显示设备之间无法共用等限制，使得目前大尺寸显示控制系统没有新突破。
发明内容
在本公开的一个方面，提供一种光控装置，包括：
触控层，所述触控层根据其受压的位置产生相应的控制信号，
受控器件，所述受控器件可以基于所述控制信号受到控制，和
光致形变层，所述光致形变层位于所述触控层上，
其中所述光致形变层被配置为在被特定波长的光照射时产生形变，使得所述触控层受压，从而通过光照射位置控制所述受控器件。
根据本公开的一个实施方案，所述光控装置包括显示屏幕，
其中所述触控层是透明触控层，所述透明触控层位于所述显示屏幕上，
其中所述光致形变层是透明光致形变层，所述透明光致形变层位于所述透明触控层上远离所述显示屏幕的一侧，
其中所述显示屏幕可以显示提示所述触控层的待受压位置的图像。
根据本公开的一个实施方案，所述光致形变层包含光致形变液晶聚合物。
根据本公开的另一个实施方案，所述光致形变层包括光致形变液晶聚合物凹槽阵列，所述光致形变液晶聚合物凹槽阵列中的多个光致形变液晶聚合物凹槽间隔设置，其中所述光致形变液晶聚合物凹槽中容纳有所述光致形变液晶聚合物。
根据本公开的另一个实施方案，所述光控装置包括显示屏幕，
其中所述触控层是透明触控层，所述透明触控层位于所述显示屏幕上，
其中所述光致形变层是透明光致形变层，所述透明光致形变层位于所述透明触控层上远离所述显示屏幕的一侧，
其中所述显示屏幕可以显示提示所述触控层的待受压位置的图像，
其中每个所述光致形变液晶聚合物凹槽的面积小于或等于所述显示屏幕的每个像素的面积。
根据本公开的另一个实施方案，所述光致形变液晶聚合物被设置为在未受到特定波长的光的照射时沿平行于所述触控层的方向取向，并且在受到特定波长的光的照射时由液晶相转变为各向同性相。
根据本公开的另一个实施方案，所述光致形变液晶聚合物包括具有光致异构基的液晶聚合物分子，所述光致异构基在特定波长的光的照射下发生的光异构导致所述光致形变液晶聚合物形变。
根据本公开的另一个实施方案，所述光致异构基包括偶氮基。
根据本公开的另一个实施方案，所述光致形变液晶聚合物包含丙烯酸酯型偶氮苯液晶聚合物或环氧型偶氮苯液晶聚合物。
根据本公开的另一个实施方案，所述特定波长的光的波长范围是330nm-400nm，并且光照强度范围为200mW/cm 2以上，并且照射时长范围为长于400ms。
根据本公开的另一个实施方案，所述光致形变液晶聚合物包括光致形 变液晶弹性体。根据本公开的另一个实施方案，所述透明光致形变层还包括成膜材料，其中所述透明光致形变层中所述光致形变液晶聚合物的重量比范围为30％-40％。
根据本公开的另一个实施方案，所述成膜材料包括聚酯、聚烯烃和纤维素聚合物中的至少一者。
根据本公开的另一个实施方案，所述透明光致形变层的厚度为10μm-50μm。
根据本公开的另一个实施方案，所述透明触控层为电阻式触控层或压电式触控层。
根据本公开的另一个实施方案，所述显示面板还包括硬质材料层，所述硬质材料覆盖所述透明光致形变层。
在本公开的另一个方面，提供一种显示装置，包含上面中任何一项所述的带有显示屏幕的光控装置。
在本公开的另一个方面，提供一种对上面所述的光控装置进行光控的方法，所述方法包括：
用特定波长的光照射所述光致形变层的步骤。
在本公开的另一个方面，提供一种制造上面中任何一项所述的带有显示屏幕的光控装置的方法，所述方法包括：
在所述显示屏幕上设置所述透明触控层；
在所述透明触控层上远离所述显示屏幕的一侧形成所述透明光致形变层。
根据本公开的另一个实施方案，所述透明光致形变层包括光致形变液晶聚合物凹槽阵列，间隔设置所述光致形变液晶聚合物凹槽阵列中的多个光致形变液晶聚合物凹槽由间隔设置，其中所述方法包括将光致形变液晶聚合物填充到所述光致形变液晶聚合物凹槽中。
附图说明
为了更清楚地说明本公开实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的示例性实施例，对于本领域普通技术人员来讲，在不付出创造 性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是示例性地表示根据本公开的一个实施方案的光控装置的示意图。
图2是示例性地表示根据本公开的一个实施方案的光控的显示面板的结构示意图。
图3是根据本公开的一个实施方案的所使用的光致形变液晶聚合物所含的偶氮苯基团在光照射下发生异构的示意图。
图4是根据本公开的一个实施方案的所使用的光致形变液晶聚合物在光照射下从液晶相至各向同性相转变的示意图。
图5是示例性地表示根据本公开的一个实施方案的光控的显示面板的光致形变层在光照射下发生形变而对触控层产生压力的示意图。
图6是示例性地表示电阻触控制面板的触控层在压力下发生形变的示意图。
图7是示例性地表示本公开的一个实施方案的光致形变液晶聚合物凹槽阵列的示意图。
图8是示例性地表示本公开的一个实施方案的容纳有光致形变液晶聚合物的凹槽在光照射下发生形变的示意图。
具体实施方式
下面将结合本公开的具体实施方案，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施方案和/或实施例仅仅是本公开一部分实施方案和/或实施例，而不是全部的实施方案和/或实施例。基于本公开中的实施方案和/或实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施方案和/或所有其他实施例，都属于本公开保护的范围。
本公开主要借助光控显示面板作为光控装置的实例来进行说明。不过，应当理解，本公开的光控装置也可以是不包含显示功能的。例如，其可以包括在固定的背景上的由触控层和光致形变层组成的光控结构。在光控显示面板、显示装置等实施方案中，触控层和光致形变层等都是透明的，以实现显示功能。
在本公开中，如果没有具体指明，层和膜可以互换地使用。在下面的描述中，触控层有时也称作触控屏。控制笔和发光笔可以互换地使用。特定波长与特定波长可以互换地使用。本公开以光致形变液晶聚合物为例，但本公开不限于此，可以采用任何可以在特定波长的光发生光致形变的材料来形成本公开的显示面板中的透明光致形变层，只要所形成的透明光致形变层可以在被特定波长的光照射时产生形变，所述透明触控层可以检测形变的位置，从而对显示屏幕进行控制即可。
根据本公开的一个方面，可以提供一种光控装置，包括：
触控层，所述触控层根据其受压的位置产生相应的控制信号，
受控器件，所述受控器件可以基于所述控制信号受到控制，和
光致形变层，所述光致形变层位于所述触控层上，
其中所述光致形变层被配置为在被特定波长的光照射时产生形变，使得所述触控层受压，从而通过光照射位置控制所述受控器件。
本公开的光控装置的原理是通过光照射控制受控器件。本文所述的受控器件是使用者所要控制的器件。典型地，受控器件可以是用于实现所述光控装置的功能的器件。例如，当光控装置是控制方式为光控的音响时，受控器件可以是扬声器等；当光控装置是控制方式为光控的电视时，受控装置可以是电视屏幕和扬声器等。光控装置中可以存在多个受控器件。本发明对受控器件没有限制，只要其可以根据触控层产生的控制信号受到控制即可。触控层与受控器件之间的通讯方式可以是有线或无线的。
利用光致形变层通过光照射产生的形变压迫触控层，使得触控层如同被触摸。触控层的作用是根据不同的受压位置产生相应的不同的控制信号。受控器件可以基于所述不同的控制信号受到控制。
图1是示例性地表示根据本公开的一个实施方案的光控装置的示意图。在图1中，光致形变层10设置在触控层20上。当特定波长的光L照射光致形变层10时，在光照射的位置产生形变。该形变使得触控层20在该位置受压，从而产生与受压位置相应的控制信号。也就是说，在触控层20的不同位置受压将产生不同的信号，产生的信号与受压位置相对应。将在触控层20的特定位置受压时产生的特定信号选定为控制信号，并基于该特定控制信号的出现对受控器件进行特定控制。这样，便可以通过对触控 层施加压力来控制受控器件。采用触控层对受控器件进行控制的方案是已知的。其一个实例是利用包含触控层的触控显示面板对各种受控器件，例如屏幕、扬声器、相机等进行控制。本领域技术人员可以设计各种根据触控层的控制信号对受控器件进行控制的具体方案。控制信号可以直接用于控制受控器件，也可以经过中间处理器件处理、计算之后用于控制受控器件。可以有线地或无线地传送控制信号。
通常，各种包含触控层的触控装置的用途都可以用本发明的光控装置实现，即，各种可以通过触控方式控制的受控器件都可以通过本发明的光控方式得到控制。
本公开的光控装置的一种典型的实施方案是光控的显示面板，其包括显示屏幕，
其中所述触控层是透明触控层，所述透明触控层位于所述显示屏幕上，和
其中所述光致形变层是透明光致形变层，所述透明光致形变层位于所述透明触控层上远离所述显示屏幕的一侧。
其中所述显示屏幕可以显示提示所述触控层的待受压位置的图像。
在此实施方案中，显示屏幕的作用包括显示用于向使用者提示触控层的待受压位置的图像。例如，通过在屏幕的特定位置显示特定图案，提示使用者在该处对触控层加压可以发送特定的控制信号。当然，显示屏幕也可以同时显示与光控无关的影像。
显示屏幕本身可以是受控器件。即，通过光控，改变显示屏幕本身的状态，如亮度、对比度、其显示的图像等。不过，受控器件也可以不是显示屏幕，而是例如扬声器、打印机、网络适配器等。
本公开通过普通的电阻式或压电式触控显示单元上添加光致形变层，该光致形变层在被特定波长的光照射时产生形变，电阻式或压电式触控显示单元的触控层检测形变的位置，从而对受控器件如显示屏幕进行控制，进而实现光控的功能。如上所述，在光控显示面板的实施方案中，触控层和光致形变层都是透明的。以下有时以透明触控层和光致形变层来说明触控层和光致形变层。
特定波长的光可以通过一只简单的发光笔如激光笔实现，当需要操作控制时，发出特定波长的光如激光，当不需要控制仅需要指示时发出其他波长的光或不发射光。
光致形变层可以包含光致形变液晶聚合物。光致形变液晶聚合物可以包含丙烯酸酯型偶氮苯液晶聚合物或环氧型偶氮苯液晶聚合物，例如可以是光致形变液晶弹性体。光致形变层的厚度可以为10μm-50μm。
通过调控光致形变层中的光致形变液晶聚合物如光致形变液晶弹性体，使得其仅对特定光的波长敏感而发生形变，可以排除外界环境光对其的误操作。
需要说明的是，发出的光线可以为紫外光、红外光、或者可见光。在此情况下，光致形变层采用在特定波长的光线的照射下能够发生形变的光致形变液晶聚合物制成。例如，在光致形变层采用在紫外光照射下能够发生形变的光致形变液晶聚合物制成时，控制笔发出的光线为紫外光。或者，在光致形变层采用在红外光照射下能够发生形变的光致形变液晶聚合物制成时，控制笔发出的光线为红外光。
在下面的描述中，能够使光致形变液晶聚合物发生光致形变的特定波长的光线或激光有时也称作光。
光致形变聚合物材料，化学结构上应该具有能发生可逆的光异构化反应的基团，有通过顺反异构反应的，如偶氮苯、二苯乙烯；有通过偶极离子生成反应的，如苯并螺吡喃；有通过环化反应的，如俘精酸；有通过离子对生成反应的，如三芳基甲烷衍生物；还有通过其他一些反应来实现的。同时材料还必须具有液晶性，光致形变液晶聚合物分子可在主链上，也可在侧链上。由于液晶的有序排列特性，使光致形变液晶聚合物分子在特定波长的光作用下，发生较为一致的变化，再通过与聚合物链的偶合，从而实现微观到宏观上的形变。
以偶氮苯系为例，在采用偶氮二苯乙炔侧基的液晶弹性体材料形成的光致形变层时，在受到紫外光的照射下，偶氮二苯乙炔侧基会吸收光能发生顺反异构化，从而引起液晶基元排列发生变化，使得宏观上该层受到特定波长的光照射的部分发生形变，例如弯曲、伸长等。
轻度交联的光致形变液晶聚合物可以获得形变率达20％的光致伸缩。聚合物液晶弹性体既具有液晶材料的各种优异性能又具有聚合物交联网络的特征，因此具有良好的外场响应性、分子协同作用和弹性。
光致形变液晶聚合物可以包括具有光致异构基的液晶聚合物分子。光致异构基可以在特定波长的光的照射下发生的光异构导致光致形变液晶聚合物形变。光致异构基可以包括偶氮基。光致形变液晶聚合物可以包含丙烯酸酯型偶氮苯液晶聚合物或环氧型偶氮苯液晶聚合物。
在采用丙烯酸酯型偶氮苯液晶聚合物或环氧型偶氮苯液晶聚合物且光致形变层的厚度为10μm-50μm的情况下，特定波长的光的波长范围是330nm-400nm，并且光照强度范围为200mW/cm 2以上，并且照射时长范围为长于400ms。例如，在采用丙烯酸酯型偶氮苯液晶聚合物或环氧型偶氮苯液晶聚合物且光致形变层的厚度为约20μm的情况下，光的波长为约365nm，光强为约200mW/cm 2，且照射时间为约500ms，即可形成完整的形变。
光致形变层还可以包括成膜材料。光致形变层中光致形变液晶聚合物的重量比范围可以为30％-40％。成膜材料可以包括聚酯、聚烯烃和纤维素聚合物中的至少一者。
显示面板还可以包括硬质材料层。硬质材料可以覆盖光致形变层。
图2是示例性地表示根据本公开的一个实施方案的光控的显示面板的结构示意图。
如图2所示，光控的显示面板可以包括：透明光致形变层10、透明触控层20和显示屏幕30。透明触控层20位于显示屏幕30上。透明光致形变层10位于透明触控层20上远离显示屏幕10的一侧。
透明光致形变层10包含光致形变液晶聚合物。光致形变液晶聚合物包括具有光致异构基的液晶聚合物分子，光致异构基在特定波长的光的照射下发生的光异构导致光致形变液晶聚合物形变。光致异构基可以包括偶氮基。光致形变液晶聚合物可以包含丙烯酸酯型偶氮苯液晶聚合物或环氧型偶氮苯液晶聚合物。
图3是根据本公开的一个实施方案的所使用的光致形变液晶聚合物所含的偶氮苯基团在光照射下发生异构的示意图。
如图3所示，偶氮苯基团在光L的照射下发生光异构而导致排列改变，从而在宏观上表面为光致形变层形状的变化。在光致形变液晶聚合物层形变时，其下面的透明触控层可以检测形变的位置，从而对受控器件如显示屏幕进行控制。在触控层是电阻式触控层的情况下，会对其下面的电阻触控层产生压力，相当于通过手指按压触控层，从而实现光控代替触控。
图4是根据本公开的一个实施方案的所使用的光致形变液晶聚合物在光照射下从液晶相至各向同性相转变的示意图。
如图4中所示，处于液晶相的光致形变液晶聚合物在光L的照射下发生到各向同性相的转变，使取向的聚合物主链PM变成各向同性。由此，在宏观上表现为光致形变层形状的变化。在光致形变液晶聚合物层形变时，其下面的透明触控层可以检测形变的位置，从而对受控器件如显示屏幕进行控制。
图5是示例性地表示根据本公开的一个实施方案的光控的显示面板的光致形变层在光照射下发生形变而对触控层产生压力的示意图。
如图5中所示，光控的显示面板可以包括：透明光致形变层10、透明触控层20和显示屏幕30。透明触控层20位于显示屏幕30上。透明光致形变层10位于透明触控层20上远离显示屏幕10的一侧。
以触控层20是电阻式触控层为例。透明光致形变层10在被特定波长的光照射时产生形变，会对其下面的电阻触控层20产生压力，相当于通过手指按压触控层20，从而实现光控代替触控。
图6是示例性地表示电阻触控制面板的触控层在压力下发生形变的示意图。
如图6中所示，电阻触控制面板可以包括电阻触控层20和在其下面的显示屏幕30。触控层20是一种多层的复合薄膜，它以一层玻璃或硬塑料平板作为基层，表面涂有一层透明氧化金属(透明的导电电阻)导电层， 上面再盖有一层外表面硬化处理、光滑防擦的塑料层。塑料层的内表面也涂有一层涂层。在透明氧化金属导电层和塑料层的内表面之间有许多细小(例如，小于1/1000英寸)的透明隔离点把两层导电层隔开绝缘。当手指F触摸显示面板的表面触控区时，两层导电层在触摸点位置就有了接触，电阻发生变化，从而产生信号，然后传送至触摸屏控制器。控制器侦测到这一接触并计算出触摸点的位置，再根据模拟鼠标的方式运作。这就是电阻技术触摸屏的最基本的原理。所以电阻触摸屏可用较硬物体操作。可以用于本公开的电阻式触控屏可以包括四线触控层、五线触控层、七线触控层和八线触控层。
图7是示例性地表示本公开的一个实施方案的光致形变液晶聚合物凹槽阵列的示意图。
如图7中所示，透明光致形变层10包括光致形变液晶聚合物凹槽阵列，光致形变液晶聚合物凹槽阵列中的多个光致形变液晶聚合物凹槽12间隔设置，由间隔层14隔开。光致形变液晶聚合物凹槽12中容纳有光致形变液晶聚合物。每个光致形变液晶聚合物凹槽12的面积小于或等于显示面板的每个像素的面积。显示装置可以包括电视。在图7中，示出了凹槽12为正方形。但是，本公开不限于此。例如凹槽12可以为矩形、圆形或椭圆形。用于形成间隔层的材料可以包括聚酰亚胺或亚克力。凹槽阵列可以为矩形阵列如方形阵列，也可以为三角形阵列。本公开对此没有特别限制。
图8是示例性地表示本公开的一个实施方案的容纳有光致形变液晶聚合物的凹槽在光照射下发生形变的示意图。
如图8中所示，容纳有平行取向(即，平行于触控层/显示屏幕的方向取向)的光致形变液晶聚合物122的凹槽12的表面124被特定波长的光L照射时，表面124因为其中的光致形变液晶聚合物122由液晶相转变成各向同性相的光致形变液晶聚合物126而收缩，整个凹槽12迎着光L的入射方向弯曲。这种光致弯曲的实现主要是因为光致形变液晶聚合物凹槽12的表层128分子对光吸收大，使表层128的光致形变液晶聚合物分子如偶 氮苯光致形变液晶聚合物分子发生反式到顺式的光化学异构变化，并且进一步引起液晶相到各向同性相的转变，而凹槽本体部分130的偶氮苯光致形变液晶聚合物分子仍保持反式构象，这种表层128和本体部分130的形状上的差异使得整个凹槽12宏观上呈现向下弯曲的行为。
在一个比较例中，将具有电阻触控层的32英寸电阻式四线触控面板组装成比较例的触控显示屏。
在一个示例性而非限制性的实施例中，在32英寸电阻式四线触控面板的电阻触控层远离显示屏幕的一侧上，用聚酰亚胺形成一层膜，膜厚度为20μm，膜中具有凹槽(透孔)阵列，两个凹槽之间的间距为100μm，凹槽的大小为50μm×50μm。在每个凹槽中，通过填充如刮涂形成光致形变液晶聚合物和纤维素聚合物的膜，其中光致形变液晶聚合物为透明丙烯酸酯型偶氮苯液晶弹性体，其具有形变率为15％的光致伸缩，其中光致形变液晶聚合物与纤维素聚合物的重量比为35∶65，并且光致形变液晶聚合物分子平行于电阻触控层取向。之后，在凹槽内容纳有光致形变液晶聚合物的聚酰亚胺膜上覆盖一层厚度为20μm的透明硬质材料层，从而形成具有透明光致形变层的显示面板。将此显示面板代替32英寸电阻式四线触控面板以比较的触控显示屏相同的方式组装成实施例的显示屏。可以发现，当用波长为365nm的激光以200mW/cm 2照射实施例的显示屏500ms以上时，实施例的显示屏可以通过此激光进行光控，其通过光控的灵敏度相当于比较例的触控屏用手指触控的灵敏度，从而实现了光控代替触控。
本公开还可以提供一种包含上述光控显示面板的显示装置。
本公开还可以提供一种制造上述光控显示面板的方法，包括：
在所述显示屏幕上设置所述透明触控层；在所述透明触控层上远离所述显示屏幕的一侧形成透明光致形变层的步骤。透明光致形变层在被特定波长的光照射时产生形变，透明触控层检测形变的位置，从而对受控器件如显示屏幕进行控制。
透明光致形变层包括光致形变液晶聚合物凹槽阵列，光致形变液晶聚 合物凹槽阵列中的多个光致形变液晶聚合物凹槽间隔设置，由间隔层隔开。光致形变液晶聚合物凹槽中容纳有光致形变液晶聚合物。可以将光致形变液晶聚合物填充如刮涂到光致形变液晶聚合物凹槽中。
本公开还可以提供一种对上面所述的显示装置进行光控的方法，所述方法包括：用特定波长的光照射透明光致形变层的步骤。特定波长的光可以是激光。在特定波长的光照射透明光致形变层时，根据所使用的激光，激光可以照射多个光致形变液晶聚合物凹槽。即，激光在透明光致形变层上的光斑可以覆盖数个光致形变液晶聚合物凹槽。
由本公开的显示面板及其制造方法、显示装置及对其进行光控的方法，可以对大尺寸显示器(如电视)由发光笔进行光控，实现远距离且多人共享的控制，而发光笔具有携带方便、不同显示设备之间可以共享的优点。
显然，本领域的技术人员可以对本公开实施例进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (20)

  1. 一种光控装置，包括：
    触控层，所述触控层根据其受压的位置产生相应的控制信号，
    受控器件，所述受控器件可以基于所述控制信号受到控制，和
    光致形变层，所述光致形变层位于所述触控层上，
    其中所述光致形变层被配置为在被特定波长的光照射时产生形变，使得所述触控层受压，从而通过光照射位置控制所述受控器件。
  2. 根据权利要求1所述的光控装置，其中所述光控装置包括显示屏幕，
    其中所述触控层是透明触控层，所述透明触控层位于所述显示屏幕上，
    其中所述光致形变层是透明光致形变层，所述透明光致形变层位于所述透明触控层上远离所述显示屏幕的一侧，
    其中所述显示屏幕可以显示提示所述触控层的待受压位置的图像。
  3. 根据权利要求1所述的光控装置，其中所述光致形变层包含光致形变液晶聚合物。
  4. 根据权利要求3所述的光控装置，其中所述光致形变层包括光致形变液晶聚合物凹槽阵列，所述光致形变液晶聚合物凹槽阵列中的多个光致形变液晶聚合物凹槽间隔设置，其中所述光致形变液晶聚合物凹槽中容纳有所述光致形变液晶聚合物。
  5. 根据权利要求4所述的光控装置，其中所述光控装置包括显示屏幕，
    其中所述触控层是透明触控层，所述透明触控层位于所述显示屏幕上，
    其中所述光致形变层是透明光致形变层，所述透明光致形变层位于所述透明触控层上远离所述显示屏幕的一侧，
    其中所述显示屏幕可以显示提示所述触控层的待受压位置的图像，
    其中每个所述光致形变液晶聚合物凹槽的面积小于或等于所述显示屏幕的每个像素的面积。
  6. 根据权利要求3所述的光控装置，其中所述光致形变液晶聚合物被设置为在未受到特定波长的光的照射时沿平行于所述触控层的方向取向，并且在受到特定波长的光的照射时由液晶相转变为各向同性相。
  7. 根据权利要求3所述的光控装置，其中所述光致形变液晶聚合物包括具有光致异构基的液晶聚合物分子，所述光致异构基在特定波长的光的照射下发生的光异构导致所述光致形变液晶聚合物形变。
  8. 根据权利要求7所述的光控装置，其中所述光致异构基包括偶氮基。
  9. 根据权利要求3所述的光控装置，其中所述光致形变液晶聚合物包含丙烯酸酯型偶氮苯液晶聚合物或环氧型偶氮苯液晶聚合物。
  10. 根据权利要求9所述的光控装置，其中所述特定波长的光的波长范围是330nm-400nm，并且光照强度范围为200mW/cm 2以上，并且照射时长范围为长于400ms。
  11. 根据权利要求3所述的光控装置，其中所述光致形变液晶聚合物包括光致形变液晶弹性体。
  12. 根据权利要求3所述的光控装置，其中所述透明光致形变层还包括成膜材料，其中所述透明光致形变层中所述光致形变液晶聚合物的重量比范围为30％-40％。
  13. 根据权利要求12所述的光控装置，其中所述成膜材料包括聚酯、聚烯烃和纤维素聚合物中的至少一者。
  14. 根据权利要求1所述的光控装置，其中所述光致形变层的厚度为10μm-50μm。
  15. 根据权利要求1所述的光控装置，其中所述触控层为电阻式触控层或压电式触控层。
  16. 根据权利要求1所述的光控装置，其中所述光控装置还包括硬质材料层，所述硬质材料覆盖所述光致形变层。
  17. 一种显示装置，其包含权利要求2至16中任何一项所述的光控装置。
  18. 一种对权利要求1所述的光控装置进行光控的方法，所述方法包括：
    用所述特定波长的光照射所述光致形变层。
  19. 一种制造权利要求2所述的光控装置的方法，所述方法包括：
    在所述显示屏幕上设置所述透明触控层；
    在所述透明触控层上远离所述显示屏幕的一侧形成所述透明光致形 变层。
  20. 根据权利要求19所述的方法，其中所述透明光致形变层包括光致形变液晶聚合物凹槽阵列，间隔设置所述光致形变液晶聚合物凹槽阵列中的多个光致形变液晶聚合物凹槽，其中所述方法包括将光致形变液晶聚合物填充到所述光致形变液晶聚合物凹槽中。
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