WO2017118234A1 - 显示装置及控制方法 - Google Patents

显示装置及控制方法 Download PDF

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Publication number
WO2017118234A1
WO2017118234A1 PCT/CN2016/107084 CN2016107084W WO2017118234A1 WO 2017118234 A1 WO2017118234 A1 WO 2017118234A1 CN 2016107084 W CN2016107084 W CN 2016107084W WO 2017118234 A1 WO2017118234 A1 WO 2017118234A1
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WO
WIPO (PCT)
Prior art keywords
substrate
light
light source
display device
display
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Application number
PCT/CN2016/107084
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English (en)
French (fr)
Inventor
高健
陈小川
赵文卿
王倩
卢鹏程
杨明
王磊
许睿
牛小辰
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 北京京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/539,025 priority Critical patent/US10274781B2/en
Publication of WO2017118234A1 publication Critical patent/WO2017118234A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1323—Arrangements for providing a switchable viewing angle
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/13362—Illuminating devices providing polarized light, e.g. by converting a polarisation component into another one
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133626—Illuminating devices providing two modes of illumination, e.g. day-night

Definitions

  • Embodiments of the present invention relate to a display device and a control method.
  • the security of information is affected because the display device has a wide viewing angle in space. For example, some users may read some confidential information in a public place, and because the display device has a large viewing angle, the displayed information will be seen by others around, causing adverse consequences.
  • Embodiments of the present invention provide a display device and a control method, which can achieve an anti-spying effect and improve light energy utilization.
  • a display device in one aspect, includes a display panel including a first substrate and a second substrate, and a plurality of display units, wherein a first light source is disposed on a side of the first substrate, Light emitted from the first light source enters the first substrate and propagates in a total reflection manner in the first substrate; and a light adjustment structure is disposed on a surface of the first substrate near the second substrate The light adjustment structure is configured to reduce a divergence angle of light emitted by each display unit of the display panel.
  • the display device further includes a second light source disposed at a surface of the first substrate remote from the second substrate.
  • the light adjustment structure includes a plurality of microstructures, each of the microstructures including a grating surface and a groove surface, the grating surface and the groove surface having an acute angle, and the groove surface in each microstructure
  • the acute angle of the grating surface and the spacing between adjacent groove surfaces are adjustable to change the divergence angle of the light emitted by each display unit of the display panel.
  • each of the microstructures is strip shaped and one of the display panels The row display unit corresponds.
  • the display device further includes a reflective structure disposed on a surface of the first substrate where total reflection occurs; wherein, at a surface of the first substrate adjacent to the second substrate, the The reflective structure and the light adjustment structure do not overlap.
  • the display device further includes a liquid crystal layer disposed between the first substrate and the second substrate and a polarizer disposed at a surface of the second substrate remote from the liquid crystal layer.
  • the light adjustment structure is configured such that a polarization state of light emitted through the light adjustment structure is perpendicular to a transmission axis of the polarizer.
  • the display device further includes a second light source disposed at a surface of the first substrate remote from the second substrate, the second light source configured to emit linearly polarized light; wherein, the linear polarization The polarization state of the light is perpendicular to the transmission axis of the polarizer.
  • the first substrate includes a first transparent substrate substrate and display elements disposed on the first transparent substrate and located at each display unit position; the first light source is disposed at the first a side surface of the transparent substrate; the light adjustment structure is disposed on a surface of the first transparent substrate adjacent to the liquid crystal layer.
  • the display element includes a thin film transistor and a pixel electrode electrically coupled to a drain of the thin film transistor.
  • the second substrate includes a second transparent substrate substrate and a filter pattern disposed on the second transparent substrate substrate at a position of each display unit.
  • a control method of the above display device comprising: controlling, in a privacy mode, the first light source to be turned on and the second light source to be turned off; in a normal mode, controlling the first light source to be turned off The second light source is turned on.
  • Embodiments of the present invention provide a display device and a control method, by providing a light adjustment structure on a first substrate, disposing a first light source on a side surface of the first substrate, and making the light emitted by the first light source in the first substrate.
  • the reflection form propagates, when the light encounters the light adjustment structure on the first substrate, the light adjustment structure can adjust the direction of the light incident on the light adjustment structure, so that after being adjusted by the light adjustment structure, it is emitted from each display unit.
  • the divergence angle of the light is reduced, thereby reducing the viewing angle of the display device and achieving the anti-spying effect.
  • the light emitted by the first light source in the display device is emitted through the light adjustment structure during total reflection propagation in the first substrate, thereby improving the utilization of light emitted by the first light source.
  • FIG. 1 is a schematic structural diagram 1 of a display device according to an embodiment of the present invention.
  • FIG. 2 is a second schematic structural diagram of a display device according to an embodiment of the present invention.
  • 3A is a schematic structural view 1 of a microstructure of a display device according to an embodiment of the present invention.
  • FIG. 3B is a second schematic structural diagram of a microstructure in a display device according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a principle of a privacy display of a display device according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a corresponding relationship between a microstructure and a display unit in a display device according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram 3 of a display device according to an embodiment of the present invention.
  • the embodiment of the invention provides a display device.
  • the display device includes a display panel 01
  • the display panel 01 includes a first substrate 10 and a second substrate 20 .
  • a first light source 02 is disposed on one side of the first substrate 10, and the light emitted by the first light source 02 is incident on the first substrate 10 and propagates in a total reflection manner in the first substrate 10 (as shown in the first substrate in FIG. 1). The arrow shows).
  • the display device further includes a light adjustment structure 30 disposed on a surface of the first substrate 10 adjacent to the second substrate 20; the light adjustment structure 30 is configured to reduce light emitted by each display unit of the display panel 01 Divergence angle to reduce the viewing angle of the display device.
  • the type of the display panel 01 is not specifically limited, as long as it is a passive illumination display panel.
  • the first light source 02 may be disposed on one side of the first substrate 10 or may be disposed on multiple sides of the first substrate 10, respectively.
  • the first light source 02 is disposed only on one side of the first substrate 10.
  • the other surface may be referred to as a side surface except for the light-emitting surface of the first substrate 10 and the plane parallel to the light-emitting surface.
  • the embodiment of the present invention does not specifically limit the first light source 02, and may be, for example, an LED (Light Emitting Diode).
  • the light emitted by the first light source 02 may be parallel light.
  • the parallel light emitted by the first light source 02 may be incident on the first substrate 10. It can propagate in the first substrate 10 in the form of total reflection.
  • the light emitted by the first light source 02 may be a divergent light having a certain angle.
  • the outermost side of the first light source 02 may be adjusted by adjusting the angle of the outermost light of the divergent light with respect to the side of the first substrate 10.
  • the light After the light is incident on the first substrate 10, it can propagate in the first substrate 10 in the form of total reflection; since the angle of the outermost light of the divergent light is the smallest relative to the side of the first substrate 10, if the first light source 02 emits divergent light
  • the outermost light can be transmitted in the form of total reflection after being incident on the first substrate 10, and the other light in the divergent light can be transmitted in the form of total reflection after being incident on the first substrate 10.
  • the light emitted from the first light source 02 may be, for example, propagated in the form of total reflection in the base substrate of the first substrate 10, or may be disposed on the substrate.
  • One of the film layers on the substrate propagates in the form of total reflection, whereby not only total reflection can occur on the upper and lower surfaces of the corresponding medium (for example, the substrate), but also total reflection can occur on the side of the corresponding medium.
  • the light adjustment structure 30 is disposed on a surface of the corresponding substrate (for example, a substrate substrate) in which the total reflection occurs in the first substrate 10 close to the second substrate 20.
  • the light adjustment structure 30 can be any structure made based on the principle of light diffraction. The direction of the outgoing light after passing through the light adjustment structure 30 is changed, whereby the divergence angle of the emitted light can be reduced.
  • FIG. 1 only schematically shows a corresponding dielectric layer of the first substrate 10 where total reflection occurs, and a schematic diagram of the light adjustment structure 30 located near the surface of the second substrate 20 of the dielectric layer, and other inventions The parts that are not associated with the points are not shown.
  • the light adjustment structure 30 is disposed on the first substrate 10, the first light source 02 is disposed on one side of the first substrate 10, and the light emitted by the first light source 02 is propagated in the total reflection form in the first substrate 10.
  • the light adjustment structure 30 can adjust the direction of the light incident on the light adjustment structure 30 so that it is emitted from each display unit after being adjusted by the light adjustment structure 30.
  • the divergence angle of the light is reduced, thereby reducing the viewing angle of the display device and achieving the anti-spying effect.
  • the light emitted by the first light source 02 in the display device is emitted through the light adjustment structure 30 during the total reflection propagation in the first substrate 10, thereby improving the utilization of the light emitted by the first light source 02.
  • the above display device may further include a second light source 03 disposed at a surface of the first substrate 10 away from the second substrate 20.
  • the second light source 03 is not specifically limited in the embodiment of the present invention.
  • it may be an LED (Light Emitting Diode).
  • the light emitted by the second light source 03 may be light perpendicular to the first substrate 10 as shown in FIG. 2, or may be divergent light.
  • an embodiment of the present invention provides a display device that can switch between a privacy display and a normal display by controlling the operation of the first light source 02 and the second light source 03.
  • the display device performs an anti-spy display or a normal display. That is, it is possible to control the first light source 02 to operate and the second light source 03 to be inoperative to cause the display device to perform the anti-spy display; or to control the first light source 02 to be inoperative and the second light source 03 to operate to cause the display device to perform normal display. Based on this, different display modes can be selected according to user requirements, and the use range of the display device can be expanded.
  • the light conditioning structure 30 includes a plurality of microstructures 301, as shown in Figures 3A and 3B, each of which includes a grating surface 302 and a groove surface 303, the grating surface 302 and the groove surface 303 having an acute angle ⁇ , by setting the acute angle ⁇ between the groove surface 303 and the grating surface 302 in each microstructure and the spacing d between the adjacent groove surfaces 303, the divergence angle of the light emitted by each display unit of the display panel is reduced.
  • each microstructure 302 extracts incident light based on the diffraction of light.
  • the light emitted perpendicular to the groove surface 303 is the central main maximum position of the single-plane diffracted light
  • the light emitted perpendicularly to the groove surface 303 The energy is maximum, that is, the light beam of this wavelength is shinned and enhanced at a specific angle (an angle perpendicular to the groove surface), and the light emitted through the microstructure 302 is linearly polarized light.
  • the direction of exit of light passing through the microstructure 301 can be adjusted, thereby reducing the divergence angle of the outgoing light passing through the display unit.
  • the divergence angle of the light emitted by the display unit 40 may be a divergence angle suitable for the human eye to cover the range of the human eyelid distance at a comfortable viewing distance of the positive viewing angle, or may be a comfortable viewing distance of the positive viewing angle. Covering the divergence angle of two or more distances in the human eye, such a structure can widen the range of the visible area.
  • the direction of the outgoing light can be adjusted so that the divergence angle of the light emitted by each display unit 40 is reduced.
  • the wavelength ⁇ of the emitted light and the pitch d between the adjacent groove faces 303 and the acute angle ⁇ between the grating face 302 and the groove face 303 are related.
  • the wavelength of the outgoing light adjusted by the same microstructure 301 can be adjusted by adjusting the spacing d between adjacent groove surfaces 303 in each microstructure 301. ⁇ is not completely the same, so that the emitted light of different wavelengths is stacked to form white light.
  • the angle ⁇ of the acute angle between the groove surface 303 and the grating surface 302 in each microstructure can be adjusted.
  • the direction of the light is emitted and emitted in a blazed manner, so that the divergence angle of the light emitted by each display unit 40 is reduced, so that the output light energy is concentrated, and the brightness of the output light is ensured.
  • the spacing d between the adjacent groove faces 303 the emitted light of different wavelengths can be stacked to form white light.
  • each of the microstructures 301 is strip-shaped and corresponds to a row of display units in the display panel.
  • the strip microstructure 301 should be the same size as the corresponding row of display units in the display panel.
  • the row of display units herein means that the plurality of display units 40 are arranged in a row in the vertical direction.
  • the fabrication process of the microstructure 301 can be simplified by arranging the microstructures 301 into strips and sizing them correspondingly to a row of display cells.
  • the display device further includes a reflective structure 50 disposed on the surface of the first substrate 10 where total reflection occurs. Wherein, at the surface of the first substrate 10 close to the second substrate 20, the reflective structure 50 and the light adjustment structure 30 do not overlap.
  • the embodiment of the present invention does not specifically define the reflective structure 50, and for example, it may be a film layer having high reflectivity.
  • a reflective structure 50 is disposed on the surface of the first substrate 10, and reflection occurs when light encounters the reflective structure 50.
  • the reflective structure 50 and the light adjustment structure 30 do not overlap, and the light emitted from the first light source 02 propagates in a total reflection manner when encountering the reflective structure 50,
  • the light adjustment structure 30 is encountered, it is adjusted by the light adjustment structure 30 and then emitted in the adjusted direction.
  • the reflective structure 50 by providing the reflective structure 50, it can be ensured that the light emitted by the first light source 02 is propagated in the first substrate 10 in a total reflection manner. On the basis of this, light is emitted through the light adjustment structure 30 during the total reflection propagation in the first substrate 10, which greatly improves the utilization of light.
  • the display device further includes a liquid crystal layer 60 disposed between the first substrate 10 and the second substrate 20, and a polarizer 70 disposed on a surface of the second substrate 20 away from the liquid crystal layer 60. .
  • the polarization state of the light emitted by the light adjustment structure 30 is perpendicular to the transmission axis of the polarizer 70.
  • the second light source 03 is configured to emit linearly polarized light, and the polarization state of the linearly polarized light is perpendicular to the transmission axis of the polarizer 70.
  • the polarizer functions to convert a circular light source of natural light into a linear light source, and absorb light having a polarization direction parallel to the absorption axis, and light parallel to the transmission axis is substantially not attenuated by the polarizer. After the polarized natural light passes through the polarizer in each direction, it becomes a polarized light whose vibration direction is parallel to the transmission axis direction.
  • the light can be controlled. To achieve the purpose of displaying images.
  • the first light source 02 can emit linearly polarized light after being adjusted by the light adjusting structure 30, and the second light source 03 can directly emit linearly polarized light, and the polarization state of the linearly polarized light emitted by the light adjusting structure 30 is adjusted.
  • the polarization states of the linearly polarized light emitted by the second light source 03 are both perpendicular to the transmission axis of the polarizer 70 at the surface of the second substrate 20 away from the liquid crystal layer 60. Therefore, the first substrate 10 is not required to be away from the liquid crystal layer 60.
  • the surface of the polarizer 70 is provided to simplify the manufacturing process of the display device, and the display device can be made thinner by making a layer of polarizer less.
  • the first substrate 10 includes a first transparent substrate 101, and a display element 102 disposed on the first transparent substrate 101 at a position of each display unit;
  • the light source 02 is disposed on one side of the first transparent substrate 101;
  • the light adjustment structure 30 is disposed on a surface of the first transparent substrate 101 close to the liquid crystal layer 60.
  • the first transparent substrate 101 may be a glass substrate.
  • the light adjustment structure 30 is disposed on the surface of the first transparent substrate 101 close to the liquid crystal layer 60, and the display element 102 can be directly connected to the light adjustment structure 30 or can be connected through a transition structure disposed therebetween. Set the actual situation.
  • the display element 102 is a structure that is indispensable on the first transparent substrate 101 and is composed of layers in the display unit of the first substrate 10, and the first substrate 10 includes a plurality of display elements 102. .
  • display element 102 includes a thin film transistor including a gate, a gate insulating layer, a semiconductor active layer, a source and a drain, wherein the drain is electrically coupled to the pixel electrode.
  • the material of the pixel electrode may be, for example, ITO (Indium Tin Oxides), IZO (Indium Zinc Oxide) or the like.
  • the thin film transistor is a semiconductor unit having a switching characteristic, which may be a top gate type or a bottom gate type.
  • display element 102 also includes a common electrode.
  • the pixel electrode and the common electrode are spaced apart in the same layer, and both are strip electrodes;
  • the pixel electrode and the common electrode are disposed in different layers, wherein the upper electrode is a strip electrode and the lower electrode is a plate electrode or a strip electrode.
  • the second substrate 20 includes a second transparent substrate substrate 201 and a filter pattern 202 disposed on the second transparent substrate substrate 201 at a position of each display unit.
  • the filter pattern may be a red filter pattern, a green filter pattern, and a blue filter pattern, or other three primary color filter patterns.
  • setting the filter pattern 202 on the second substrate 20 can simplify the preparation process of the first substrate 10 compared to the case where the filter pattern 202 is disposed on the first substrate 10.
  • the embodiment of the present invention further provides a control method for the above display device, comprising: controlling the first light source 02 to be turned on and the second light source 03 to be turned off in the anti-spy mode; in the normal mode, controlling the first light source 02 to be turned off and the second Light source 03 is turned on.
  • the embodiment of the invention provides two display modes, a anti-spy display and a normal display, and the user can select according to needs.
  • the first light source 02 When the anti-spy mode is selected, the first light source 02 is turned on and the second light source 03 is turned off. At this time, the light emitted by the first light source 02 is adjusted by the light adjustment structure 30 and then passed through the display unit 40 of the display panel to reduce the divergence angle. The light is emitted, so that the viewing angle of the display device is reduced, and the anti-spying effect is achieved.
  • the first light source 02 is turned off and the second light source 03 is turned on. If the light emitted by the second light source 03 is perpendicular to the first substrate 10, the vertical light is directly emitted through the light adjusting structure 30 in the original direction. At this time, the light adjustment structure 30 does not change the direction of the light; if the light emitted by the second light source 03 is divergent, even if it passes through the light adjustment structure 30, since there is light in each direction, the macroscopic light adjustment structure 30 does not Change the direction of the light. Based on this, the display device does not have an anti-spying effect, and normal display can be performed.
  • the display device of the embodiment of the invention may be any passive display product or component having a display function, such as a mobile phone, a tablet computer, a display, a notebook computer, a digital photo frame, and the like.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. Including the steps of the above method embodiments;
  • the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Abstract

一种显示装置及控制方法，可达到防窥效果，且提高光能利用率。显示装置包括显示面板(01)，显示面板(01)包括第一基板(10)和第二基板(20)以及多个显示单元(40)，其中，在第一基板(10)的一侧设置有第一光源(02)，第一光源(02)发出的光射入第一基板(10)且在第一基板(10)中以全反射方式传播；并且在第一基板(10)的靠近第二基板(20)的表面上设置有光调节结构(30)，光调节结构(30)被配置为降低显示面板(01)的每个显示单元(40)出射的光线的发散角。

Description

显示装置及控制方法 技术领域
本发明的实施例涉及一种显示装置及控制方法。
背景技术
近年来，随着显示装置的发展，用户对显示装置的性能要求也越来越高，例如，对于防窥的需求越来越多。
目前，由于显示装置在空间具有广泛的发光视角，使得信息的安全性受到影响。例如，某些用户会在公共场所阅读一些机密信息，而由于显示装置发光视角大，其显示的信息会被周围其他人看到，从而造成不利后果。
发明内容
本发明的实施例提供一种显示装置及控制方法，可达到防窥效果，且提高光能利用率。
为达到上述目的，本发明的实施例采用如下技术方案：
一方面，提供一种显示装置，包括显示面板，所述显示面板包括第一基板和第二基板以及多个显示单元，其中，在所述第一基板的一侧设置有第一光源，所述第一光源发出的光射入所述第一基板且在所述第一基板中以全反射方式传播；并且，在所述第一基板的靠近所述第二基板的表面上设置有光调节结构，所述光调节结构被配置为降低所述显示面板的每个显示单元出射的光线的发散角。
在一个示例中，所述显示装置还包括设置在所述第一基板的远离所述第二基板的表面处的第二光源。
在一个示例中，所述光调节结构包括多个微结构，每个微结构包括光栅面和槽面，所述光栅面和槽面具有锐角夹角，并且每个微结构中所述槽面与所述光栅面的锐角夹角以及相邻槽面间的间距可调以改变所述显示面板的每个显示单元出射的光线的发散角。
在一个示例中，每个所述微结构为条形且与所述显示面板中的一 排显示单元对应。
在一个示例中，所述显示装置还包括设置在所述第一基板的发生全反射的表面上的反射结构；其中，在所述第一基板的靠近所述第二基板的表面处，所述反射结构和所述光调节结构不重叠。
在一个示例中，所述显示装置还包括设置在所述第一基板和所述第二基板之间的液晶层以及设置在所述第二基板的远离所述液晶层的表面处的偏光片。其中，光调节结构被配置为使通过所述光调节结构出射的光的偏振态与所述偏光片的透射轴垂直。
在一个示例中，所述显示装置还包括设置在所述第一基板的远离所述第二基板的表面处的第二光源，所述第二光源被配置为发出线偏振光；其中，线偏振光的偏振态与所述偏光片的透射轴垂直。
在一个示例中，所述第一基板包括第一透明衬底基板以及设置在第一透明衬底基板上且位于每个显示单元位置处的显示元件；所述第一光源设置在所述第一透明衬底基板的侧面；所述光调节结构设置在所述第一透明衬底基板的靠近所述液晶层的表面上。
在一个示例中，所述显示元件包括薄膜晶体管以及与所述薄膜晶体管的漏极电联接的像素电极。
在一个示例中，所述第二基板包括第二透明衬底基板以及设置在第二透明衬底基板上且位于每个显示单元位置处的滤光图案。
另一方面，提供一种上述显示装置的控制方法，包括：在防窥模式下，控制所述第一光源开启而所述第二光源关闭；在正常模式下，控制所述第一光源关闭而所述第二光源开启。
本发明的实施例提供一种显示装置及控制方法，通过在第一基板上设置光调节结构、在第一基板的侧面设置第一光源并使第一光源发出的光在第一基板内以全反射形式传播，当光遇到第一基板上的光调节结构时，光调节结构便可以调节射入该光调节结构的光的方向，使得经过光调节结构调节后、从每个显示单元出射的光的发散角减小，从而降低显示装置的视角，达到防窥效果。此外，该显示装置中第一光源发出的光在第一基板内全反射传播的过程中都会通过光调节结构射出，因此提高了第一光源发出的光的利用率。
附图说明
以下将结合附图对本发明的实施例进行更详细的说明，以使本领域普通技术人员更加清楚地理解本发明，其中：
图1为本发明实施例提供的一种显示装置的结构示意图一；
图2为本发明实施例提供的一种显示装置的结构示意图二；
图3A为本发明实施例提供的显示装置中微结构的结构示意图一；
图3B为本发明实施例提供的显示装置中微结构的结构示意图二；
图4为本发明实施例提供的显示装置的防窥显示的原理示意图；
图5为本发明实施例提供的显示装置中微结构与显示单元的对应关系示意图；
图6为本发明实施例提供的一种显示装置的结构示意图三。
附图标记：
01-显示面板；02-第一光源；03-第二光源；10-第一基板；101-第一透明衬底基板；102-显示元件；20-第二基板；201-第二透明衬底基板；202-滤光图案；30-光调节结构；301-微结构；302-光栅面；303-槽面；40-显示单元；50-反射结构；60-液晶层；70-偏光片。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
除非另作定义，此处使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开专利申请说明书以及权利要求书中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接， 不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也相应地改变。
本发明实施例提供一种显示装置，如图1所示，该显示装置包括显示面板01，显示面板01包括第一基板10和第二基板20。在第一基板10的一侧设置第一光源02，所述第一光源02发出的光射入第一基板10且在第一基板10中以全反射方式传播(如图1中第一基板内的箭头所示)。
该显示装置还包括光调节结构30，光调节结构30设置在第一基板10的靠近第二基板20的表面上；光调节结构30被配置为降低显示面板01的每个显示单元出射的光线的发散角，以降低显示装置的视角。
需要说明的是，第一，本发明实施例对显示面板01的类型不做具体限定，只要是被动发光式显示面板即可。
第二，第一光源02可以设置在第一基板10的一侧，也可以分别设置在第一基板10的多侧。在一个示例中，为了简化该显示装置的结构，仅在第一基板10的一侧设置第一光源02。此处，除第一基板10的出光面及与出光面平行的平面外，其它面都可称为侧面。
本发明实施例对不对第一光源02进行具体限定，例如可以是LED(Light Emitting Diode，发光二极管)。
例如，第一光源02发出的光可以是平行光，在此情况下，通过调节平行光相对于第一基板10侧面的角度，可以使第一光源02发出的平行光射入第一基板10后能以全反射的形式在第一基板10内传播。又例如，第一光源02发出的光可以是具有一定角度的发散光，在此情况下，通过调节发散光的最外侧光线相对于第一基板10侧面的角度，可以使第一光源02最外侧光线射入第一基板10后能以全反射的形式在第一基板10内传播；由于发散光的最外侧光线相对于第一基板10侧面的角度最小，若第一光源02发出的发散光的最外侧的光线射入第一基板10后能以全反射形式传播，则发散光中的其它光线射入第一基板10后均能以全反射形式传播。
此处，参考图1所示，从第一光源02发出的光例如可以在第一基板10的衬底基板中以全反射的形式传播，或者可以在设置在衬底 基板上的其中一个膜层中以全反射的形式传播，由此，不仅可以在相应介质(例如衬底基板)的上下表面发生全反射，还可以在相应介质的侧面发生全反射。
第三，光调节结构30设置在第一基板10中发生全反射的相应介质(例如衬底基板)的靠近第二基板20的表面上。
光调节结构30可为基于光的衍射原理制成的任意结构。经过光调节结构30后的出射光的方向会发生改变，由此可减小出射光的发散角。
第四，附图1中仅示意性地示出第一基板10的发生全反射的相应介质层，以及位于该介质层的靠近第二基板20的表面的光调节结构30的示意图，其他与发明点不相关联的部分并没有绘示出。
本发明实施例在第一基板10上设置光调节结构30、在第一基板10的一侧设置第一光源02并使第一光源02发出的光在第一基板10内以全反射形式传播，当光遇到第一基板10上的光调节结构30时，光调节结构30便可以调节射入该光调节结构30的光的方向，使得经过光调节结构30调节后从每个显示单元出射的光的发散角减小，从而降低显示装置的视角，达到防窥效果。此外，该显示装置中第一光源02发出的光在第一基板10内全反射传播的过程中都会通过光调节结构30射出，因此提高了第一光源02发出的光的利用率。
在一个示例中，如图2所示，上述显示装置还可包括设置在第一基板10远离第二基板20的表面处的第二光源03。
本发明实施例不对第二光源03进行具体限定，例如，其可以是LED(Light Emitting Diode，发光二极管)。第二光源03发出的光，可以是如图2中所示的垂直于第一基板10的光，也可以是发散的光。
通过设置上述第二光源03，本发明的实施例提供了一种可在防窥显示和正常显示之间切换的显示装置，通过控制第一光源02和第二光源03的工作与否来使该显示装置进行防窥显示或正常显示。即：可控制使第一光源02工作而第二光源03不工作来使显示装置进行防窥显示；或者，控制使第一光源02不工作而第二光源03工作来使显示装置进行正常显示。基于此，可根据用户需求选择不同的显示方式，扩大该显示装置的使用范围。
在一个示例中，光调节结构30包括多个微结构301，如图3A和图3B所示，每个微结构均包括光栅面302和槽面303，光栅面302和槽面303具有锐角夹角θ，通过设置每个微结构中槽面303与光栅面302的锐角夹角θ以及相邻槽面303间的间距d，使显示面板的每个显示单元出射的光线的发散角减小。
在本示例中，每个微结构302基于光的衍射来提取出入射光。当入射光与槽面303垂直并满足2d·sinθ＝λ时，由于垂直于槽面303出射的光即是单槽面衍射光的中央主极大位置，因而垂直于槽面303出射的光的能量最大，即，该波长的光束会被以特定的角度(与槽面垂直的角度)闪耀加强出射，且经微结构302出射的光均是线偏振光。通过设计不同的d值和θ值，则可获得不同出射角度和不同的出光波段。
例如，通过设计每个微结构301中光栅面302和槽面303的锐角夹角θ，可调整通过该微结构301的光的出射方向，从而使通过显示单元的出射光的发散角减小。如图4所示，显示单元40出射光的发散角可以是适合人眼在正视角的舒适观看距离下的覆盖人眼瞳距范围的发散角，也可以是在正视角的舒适观看距离下的覆盖人眼两个或多个瞳距范围的发散角，这样的结构可加宽可视区范围。
在本示例中，通过使每个微结构301中光栅面302和槽面303的锐角夹角θ不完全相同且使相邻两个微结构301的光栅面302和槽面303的锐角夹角θ也不相同，可调整出射光的方向，从而使每个显示单元40出射的光的发散角均减小。
此外，根据公式2d·sinθ＝λ可知，出射光的波长λ与相邻槽面303间的间距d以及光栅面302与槽面303的锐角夹角θ有关。在光栅面302和槽面303的锐角夹角θ一定的情况下，可通过调整每个微结构301中相邻槽面303间的间距d来使得经过同一微结构301调节后的出射光的波长λ不完全相同，以使不同波长的出射光叠后形成白光。
本发明实施例中，由于在入射光与槽面303垂直的情况下可使光束闪耀加强出射，因此，通过调整每个微结构中槽面303与光栅面302的锐角夹角θ，可调整出射光方向并使其以闪耀加强方式出射，从而在每个显示单元40出射的光的发散角减小的基础上，使得输出的光能量较为集中，保证了输出光的亮度。在此基础上，通过设置相邻槽面303间的间距d，可使不同波长的出射光叠后形成白光。
在一个示例中，如图5所示，每个微结构301均为条形且与显示面板中的一排显示单元对应。例如，条形微结构301的尺寸应与显示面板中对应的那排显示单元的整体尺寸相同。此处的一排显示单元是指多个显示单元40沿竖直方向布置成一排。通过将微结构301设置为条形、且使其尺寸与一排显示单元对应，可简化微结构301的制作工艺。
在一个示例中，如图5所示，显示装置还包括设置在第一基板10的发生全反射的表面上的反射结构50。其中，在第一基板10靠近第二基板20的表面处，反射结构50和光调节结构30不重叠。
本发明的实施例不对反射结构50进行具体限定，例如，其可以是具有高反射率的膜层。在第一基板10的表面设置反射结构50，当光遇到该反射结构50时均会发生反射。
在本示例中，在第一基板10靠近第二基板20的表面处，反射结构50和光调节结构30不重叠，从第一光源02发出的光在遇到反射结构50时以全反射方式传播，而在遇到光调节结构30时经光调节结构30调节后按调节后的方向射出。
本发明实施例中，通过设置反射结构50，可以保证第一光源02发出的光都以全反射方式在第一基板10内传播。在此基础上，光在第一基板10内全反射传播的过程中都会通过光调节结构30射出，充分提高了光的利用率。
在一个示例中，如图6所示，显示装置还包括设置在第一基板10和第二基板20之间的液晶层60、以及设置在第二基板20远离液晶层60的表面的偏光片70。其中，通过光调节结构30出射的光的偏振态与偏光片70的透射轴垂直。在此基础上，当显示装置还包括第二光源03时，第二光源03被配置为发出线偏振光，并且该线偏振光的偏振态与偏光片70的透射轴垂直。
液晶显示器中，偏光片的作用是把自然光的圆光源转换成线光源，吸收偏振方向与吸收轴平行的光，而与透射轴平行方向的光通过偏光片基本没有减弱。各个方向都有偏振的自然光透过偏光片后，就变成了振动方向与透射轴方向平行的偏振光。在两个透射轴方向相互垂直的偏光片中间加入具有扭转特性的液晶分子，就能控制光线的通 过，从而达到显示图像的目的。
本发明实施例中，第一光源02经光调节结构30调节后可以发出线偏振光，第二光源03可以直接发出线偏振光，且经光调节结构30调节后发出的线偏振光的偏振态和第二光源03发出的线偏振光的偏振态均与第二基板20远离液晶层60的表面处的偏光片70的透射轴垂直，因此，不需要在第一基板10远离液晶层60的的表面设置偏光片70，简化了显示装置的制作工艺，且由于少制作一层偏光片，可使制作的显示装置更薄。
在一个示例中，如图6所示，第一基板10包括第一透明衬底基板101、以及设置在第一透明衬底基板101上且位于每个显示单元位置处的显示元件102；第一光源02设置在第一透明衬底基板101的一侧；光调节结构30设置在第一透明衬底基板101靠近液晶层60的表面上。
例如，第一透明衬底基板101可以是玻璃基板。
需要说明的是，光调节结构30设置在第一透明衬底基板101靠近液晶层60的表面，显示元件102可直接与光调节结构30直接接触也可以通过其间设置的过渡结构连接，具体可根据实际情况进行设置。
例如，显示元件102为第一基板10的显示单元中设置在第一透明衬底基板101上的必不可少的、且由各层图案组成的结构，且第一基板10包括若干个显示元件102。
在一个示例中，显示元件102包括薄膜晶体管，薄膜晶体管包括栅极、栅绝缘层、半导体有源层、源极和漏极，其中漏极与像素电极电联接。其中，像素电极的材料例如可以是ITO(Indium Tin Oxides，氧化铟锡)，IZO(Indium Zinc Oxide,氧化铟锌)等。薄膜晶体管是一种具有开关特性的半导体单元，其可以是顶栅型，也可以是底栅型。
在一个示例中，显示元件102还包括公共电极。
其中，对于共平面切换型(In-Plane Switch，简称IPS)阵列基板而言，像素电极和公共电极同层间隔设置，且均为条状电极；对于高级超维场转换型(Advanced-super Dimensional Switching，简 称ADS)阵列基板而言，像素电极和公共电极不同层设置，其中在上的电极为条状电极，在下的电极为板状电极或条状电极。
在一个示例中，第二基板20包括第二透明衬底基板201以及设置在第二透明衬底基板201上且位于每个显示单元位置处的滤光图案202。
例如，滤光图案可以为红色滤光图案、绿色滤光图案和蓝光滤光图案，或者是其他三基色滤光图案。
本发明实施例中，与将滤光图案202设置在第一基板10上相比，将滤光图案202设置在第二基板20上可简化第一基板10的制备工艺。
本发明实施例还提供一种上述显示装置的控制方法，包括：在防窥模式下，控制第一光源02开启而第二光源03关闭；在正常模式下，控制第一光源02关闭而第二光源03开启。
本发明实施例提供了两种显示模式，防窥显示和正常显示，用户可以根据需要进行选择。
当选择防窥模式时，开启第一光源02而关闭第二光源03，此时，第一光源02发出的光经光调节结构30调节后通过显示面板的显示单元40，以减小的发散角出射，从而使得显示装置的可视角减小，达到防窥的效果。
当选择正常显示时，关闭第一光源02而开启第二光源03，若第二光源03发出的光是垂直第一基板10的，则该垂直光直接通过光调节结构30而沿原方向出射，此时，光调节结构30不会改变光的方向；若第二光源03发出的光是发散的，即使经过光调节结构30，由于各个方向都有光，从宏观上光调节结构30也不会改变光的方向。基于此，该显示装置起不到防窥的效果，可进行正常的显示。
本发明实施例的显示装置可以为：手机、平板电脑、显示器、笔记本电脑、数码相框等任何具有显示功能的、被动式发光的产品或部件。
本领域普通技术人员可以理解：实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成，前述的程序可以存储于一计算机可读取存储介质中，该程序在执行时，执行包括上述方法实施例的步骤； 而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。
本申请要求于2016年1月8日递交的中国专利申请第201610012078.4号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (11)

  1. 一种显示装置，包括显示面板，所述显示面板包括第一基板和第二基板以及多个显示单元，其中，
    在所述第一基板的一侧设置有第一光源，所述第一光源发出的光射入所述第一基板且在所述第一基板中以全反射方式传播；并且
    在所述第一基板的靠近所述第二基板的表面上设置有光调节结构，所述光调节结构被配置为降低所述显示面板的每个显示单元出射的光线的发散角。
  2. 根据权利要求1所述的显示装置，还包括设置在所述第一基板的远离所述第二基板的表面处的第二光源。
  3. 根据权利要求1所述的显示装置，其中，所述光调节结构包括多个微结构，每个微结构包括光栅面和槽面，所述光栅面和槽面具有锐角夹角，并且每个微结构中所述槽面与所述光栅面的锐角夹角以及相邻槽面间的间距可调以改变所述显示面板的每个显示单元出射的光线的发散角。
  4. 根据权利要求3所述的显示装置，其中，每个微结构为条形且与所述显示面板中一排显示单元对应。
  5. 根据权利要求1所述的显示装置，还包括设置在所述第一基板的发生全反射的表面上的反射结构；
    其中，在所述第一基板的靠近所述第二基板的表面处，所述反射结构和所述光调节结构不重叠。
  6. 根据权利要求1所述的显示装置，还包括设置在所述第一基板和所述第二基板之间的液晶层以及设置在所述第二基板的远离所述液晶层的表面处的偏光片；
    其中，光调节结构被配置为使通过所述光调节结构出射的光的偏振态与所述偏光片的透射轴垂直。
  7. 根据权利要求6所述的显示装置，还包括设置在所述第一基板的远离所述第二基板的表面处的第二光源，所述第二光源被配置为发出线偏振光；
    其中，线偏振光的偏振态与所述偏光片的透射轴垂直。
  8. 根据权利要求1所述的显示装置，其中，所述第一基板包括 第一透明衬底基板以及设置在第一透明衬底基板上且位于每个显示单元位置处的显示元件；
    所述第一光源设置在所述第一透明衬底基板的侧面；
    所述光调节结构设置在所述第一透明衬底基板靠近所述液晶层的表面上。
  9. 根据权利要求8所述的显示装置，其中，所述显示元件包括薄膜晶体管以及与所述薄膜晶体管的漏极电联接的像素电极。
  10. 根据权利要求9所述的显示装置，其中，所述第二基板包括第二透明衬底基板以及设置在第二透明衬底基板上且位于每个显示单元位置处的滤光图案。
  11. 一种显示装置的控制方法，所述显示装置包括显示面板，所述显示面板包括第一基板和第二基板以及多个显示单元，其中，在所述第一基板的一侧设置有第一光源，所述第一光源发出的光射入所述第一基板且在所述第一基板中以全反射方式传播；在所述第一基板的靠近所述第二基板的表面上设置有光调节结构，所述光调节结构被配置为降低所述显示面板的每个显示单元出射的光线的发散角；并且，在所述第一基板的远离所述第二基板的表面处设置有第二光源，
    所述控制方法包括：
    在防窥模式下，控制所述第一光源开启而所述第二光源关闭；
    在正常模式下，控制所述第一光源关闭而所述第二光源开启。
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