WO2018166209A1 - 显示器件、显示装置和显示方法 - Google Patents
显示器件、显示装置和显示方法 Download PDFInfo
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- WO2018166209A1 WO2018166209A1 PCT/CN2017/107863 CN2017107863W WO2018166209A1 WO 2018166209 A1 WO2018166209 A1 WO 2018166209A1 CN 2017107863 W CN2017107863 W CN 2017107863W WO 2018166209 A1 WO2018166209 A1 WO 2018166209A1
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- liquid crystal
- grating structure
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- display device
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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
- G02F1/1323—Arrangements for providing a switchable viewing angle
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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
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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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
- G02F1/133504—Diffusing, scattering, diffracting elements
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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
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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
- G02F1/13363—Birefringent elements, e.g. for optical compensation
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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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
- G02F1/1393—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the birefringence of the liquid crystal being electrically controlled, e.g. ECB-, DAP-, HAN-, PI-LC cells
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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
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
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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
- G02F1/29—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 position or the direction of light beams, i.e. deflection
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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
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/30—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 grating
Definitions
- Embodiments of the present invention relate to a display device, a display device, and a display method.
- liquid crystal display technology has become the mainstream display technology in the market, and has been able to meet the needs of users in various aspects such as pixel resolution, response time, and screen size.
- special display modes are required to meet the specific needs of the user. For example, in an office environment or other private environment, the screen is required to be visible only to the user and not visible to others. This is the anti-spy display mode. For example, in other cases, many people need to be able to see the screen, which is the shared display mode.
- a display device comprises: a backlight module; a display module; and a liquid crystal grating structure, wherein the liquid crystal grating structure is disposed between the backlight module and the display module.
- the liquid crystal grating structure has a divergent mode and a non-divergent mode.
- the liquid crystal grating structure diverges light from the backlight module.
- the non-diverging mode the liquid crystal grating structure does not diverge light from the backlight module.
- the liquid crystal grating structure includes: a lower substrate; a plurality of lower electrodes, the plurality of lower electrodes are arranged in parallel on the upper surface of the lower substrate; a liquid crystal layer, the liquid crystal layer is disposed on the lower substrate and the a plurality of lower electrodes; an upper substrate disposed on the liquid crystal layer; and a plurality of upper electrodes arranged in parallel at a lower surface of the upper substrate, and The plurality of lower electrodes are in one-to-one correspondence.
- the divergent mode there is a voltage difference between the upper and lower electrodes of the liquid crystal grating structure.
- the non-diverging mode there is no voltage difference between the upper and lower electrodes of the liquid crystal grating structure.
- the distance between any two adjacent lower electrodes is equal, and the distance between any two adjacent upper electrodes is equal.
- the distance between two adjacent lower electrodes is equal to the width of the lower electrode
- the distance between two adjacent upper electrodes is equal to the width of the upper electrode
- the distance between the centers of any two adjacent lower electrodes and the distance between the centers of any two adjacent upper electrodes is 1.5-3.5 microns.
- the distance between the centers of any two adjacent lower electrodes and the distance between the centers of any two adjacent upper electrodes is 1.5 microns.
- the optical path difference of the electrode region of the liquid crystal grating structure in which the upper and lower electrodes are disposed and the non-electrode region in which the upper and lower electrodes are not disposed is a half wavelength of incident light or incident light.
- the liquid crystal layer is formed of an electrically controlled birefringence type liquid crystal.
- the display module includes: an array substrate and a counter substrate disposed opposite to each other, the array substrate is disposed closer to the liquid crystal grating structure than the opposite substrate; and a liquid crystal layer is disposed, Between the array substrate and the opposite substrate; a lower polarizer disposed on a side of the array substrate away from the opposite substrate; and an upper polarizer disposed away from the array substrate on the opposite substrate One side.
- the liquid crystal molecules in the liquid crystal layer of the liquid crystal grating structure are disposed such that the long axis direction coincides with the transmission axis direction of the lower polarizer of the display module.
- the greater the voltage difference between the upper electrode and the lower electrode of the liquid crystal grating structure, the angle of light from the backlight module after passing through the liquid crystal grating structure The larger the range.
- the display device further includes a backlight collimating structure disposed between the liquid crystal grating structure and the backlight module.
- the display device includes the display device as described above.
- the display device includes a backlight module, a display module, and a liquid crystal grating structure, and the liquid crystal grating structure is disposed on the backlight Between the source module and the display module.
- the display method includes determining a display mode selected from a privacy mode and a sharing mode, and adjusting an operation mode of the liquid crystal grating structure based on the determined display mode.
- the liquid crystal grating structure adopts a non-distributed mode.
- the liquid crystal grating structure adopts a divergent mode.
- the liquid crystal grating structure includes: a lower substrate; a plurality of lower electrodes, the plurality of lower electrodes are arranged in parallel on the upper surface of the lower substrate; a liquid crystal layer, the liquid crystal layer is disposed on the lower substrate and the a plurality of lower electrodes; an upper substrate disposed on the liquid crystal layer; and a plurality of upper electrodes arranged in parallel at a lower surface of the upper substrate, and A plurality of lower electrodes are in one-to-one correspondence.
- the display method includes: causing a voltage difference between an upper electrode and a lower electrode of the liquid crystal grating structure such that the liquid crystal grating structure is in a divergent mode; or between an upper electrode and a lower electrode of the liquid crystal grating structure There is no voltage difference, so that the liquid crystal grating structure is in a non-diverging mode.
- the optical path difference of the electrode region of the liquid crystal grating structure in which the upper and lower electrodes are disposed and the non-electrode region in which the upper and lower electrodes are not disposed is a half wavelength of incident light or incident light.
- the greater the voltage difference between the upper electrode and the lower electrode of the liquid crystal grating structure, the angle of light from the backlight module after passing through the liquid crystal grating structure The larger the range.
- FIG. 1 is a schematic structural view of a display device according to an embodiment of the present invention.
- FIG. 2(a) is a schematic structural diagram of a display module of a display device according to an embodiment of the invention.
- FIG. 2(b) is a schematic structural view of a liquid crystal grating structure of a display device according to an embodiment of the present invention
- FIG. 3 is a schematic cross-sectional view showing an initial state in which a liquid crystal is a positive EBC liquid crystal in a liquid crystal layer of a liquid crystal grating structure of a display device according to an embodiment of the present invention
- FIG. 4 is another schematic structural view of a display device according to an embodiment of the present invention.
- FIG. 5 is a liquid crystal layer in a liquid crystal layer of a liquid crystal grating structure of a display device according to an embodiment of the present invention.
- FIG. 6 is a schematic flow chart of a display method according to an embodiment of the present invention.
- Embodiments of the present invention propose a display device.
- a display device according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4.
- the display device includes a backlight module 100, a liquid crystal grating structure 300, and a display module 200.
- the liquid crystal grating structure 300 is disposed between the backlight module 100 and the display module 200.
- the liquid crystal grating structure 300 has a divergent mode and a non-divergent mode.
- the liquid crystal grating structure 300 in the divergent mode diverges the light from the backlight module 100 to increase the illumination range, so that the display device is in the shared display mode; the liquid crystal grating structure 300 in the non-divergent mode is from the backlight module.
- the light of 100 does not diverge so that its illumination range does not change, so that the display device is in the anti-spy display mode.
- the backlight module 100 may adopt a side-in structure, that is, the backlight module may include a light guide plate and a light source disposed at a side of the light guide plate.
- the backlight module with a side-in structure can reduce the thickness of the backlight module and reduce the energy consumption of the display device.
- the backlight module 100 can adopt a direct type structure, that is, the backlight module can include a light guide plate and a light source disposed under the light guide plate.
- the structure of the display module 200 is not particularly limited as long as the display module can effectively enable the display device to perform a display function.
- the display module 200 includes: an array substrate 201 and a counter substrate 202 disposed opposite to each other, and the array substrate 201 is disposed closer to the liquid crystal grating structure 300 than the opposite substrate 202; Display liquid crystal layer 203, disposed between the array substrate 201 and the opposite substrate 202; a lower polarizer 204 disposed on a side of the array substrate 201 away from the opposite substrate 202; and an upper polarizer 205 disposed away from the array of the opposite substrate 202 One side of the substrate 201.
- an array of thin film transistors is provided on the array substrate 201.
- a pixel electrode 206 connected to a thin film transistor is disposed on the array substrate 201, and a common electrode 207, a pixel electrode 206, and a pixel electrode 206 are disposed on the array substrate 201 and/or the opposite substrate 202.
- An electric field is formed between the common electrodes 207 to drive the liquid crystal in the liquid crystal layer 203 to be deflected, thereby realizing display.
- the common electrode 207 is disposed on the counter substrate 202 as an example; however, the embodiment of the present invention is not limited thereto.
- the common electrode 207 is disposed on the array substrate 201.
- a portion of the common electrode 207 is disposed on the array substrate 201, and another portion of the common electrode 207 is disposed on the opposite substrate 202.
- the display module 200 is taken as an example of the liquid crystal display module; however, the embodiment of the present invention is not limited thereto.
- the structure of the liquid crystal grating structure 300 is not particularly limited as long as the liquid crystal grating structure has a divergent mode and a non-divergent mode.
- the liquid crystal grating structure 300 may include a lower substrate 310, a plurality of lower electrodes 320, a liquid crystal layer 330, a plurality of upper electrodes 340, and an upper substrate 350 in order from bottom to top;
- the electrodes 320 are arranged in parallel on the upper surface of the lower substrate 310.
- the liquid crystal layer 330 is disposed on the lower substrate 310 and the plurality of lower electrodes 320.
- the upper substrate 350 is disposed on the liquid crystal layer 330, and the plurality of upper electrodes 340 are arranged in parallel on the upper substrate 350.
- the lower surface, the plurality of upper electrodes 340 are in one-to-one correspondence with the plurality of lower electrodes 320.
- the lower electrode 320 and the upper electrode 340 are in one-to-one correspondence and aligned with each other, that is, the projection of each of the upper electrodes 340 on the lower substrate 310 and the lower electrode 320 corresponding thereto completely overlap each other.
- liquid crystal grating structure 300 in the non-diverging mode, there is no voltage difference between the upper and lower electrodes, and the light from the backlight module 100 directly passes through the liquid crystal grating structure 300 without being diverged, thereby realizing the anti-spy display mode of the display device. .
- in the above-described liquid crystal grating structure 300 in the diverging mode, there is a voltage difference between the upper and lower electrodes, so that the liquid crystal molecules in the electrode regions provided with the upper and lower electrodes are deflected at a specific angle, so that the light emitted by the backlight module is emitted. The range of angles becomes larger, thereby achieving a shared display mode of the display device.
- both the lower substrate 310 and the upper substrate 350 are formed of a transparent material.
- the upper electrode 340 and the lower electrode 320 are each formed of a transparent conductive material.
- the shape of the lower electrode 320 and the upper electrode 340 is not particularly limited as long as the lower electrode 320 and the upper electrode 340 can be accurately aligned to enable the portion of the liquid crystal layer 330 corresponding to the electrode region.
- the liquid crystal molecules can be deflected.
- the lower electrode 320 and the upper electrode 340 may both be strip electrodes.
- the shape of the strip electrode is simple and easy to process, so that the control of the range of the angle of the outgoing light of the display device in the left and right direction of the user can be realized.
- the strip-shaped lower electrode 320 and the upper electrode 340 extend in a direction parallel to the edges of the display device on the left and right sides of the user.
- the plurality of lower electrodes 320 are arranged equidistantly, and the plurality of upper electrodes 340 are also arranged equidistantly, that is, referring to FIG. 2, the distance D1 between any two adjacent lower electrodes 320 is equal, any two The distance D2 between adjacent upper electrodes 340 is equal.
- the strip-shaped upper electrodes 340 and the parallel-arranged lower electrodes 320 arranged in parallel are equidistantly arranged, thereby ensuring accurate alignment between each pair of lower electrodes 320 and upper electrodes 340.
- the electrode region of the liquid crystal grating structure 300 provided with the electrode and the non-electrode region where the electrode is not provided exhibit different optical paths, thereby enabling the liquid crystal grating structure 300 to have between the upper and lower electrodes.
- the state of the voltage difference it is equivalent to a grating structure, and the effect of diverging the incident light passing through the liquid crystal grating structure 300 can be realized, so that the shared display mode can be realized.
- the ratio of the width L1 of the lower electrode 320 and the distance P1 between the centers of the adjacent two lower electrodes 320 or the electrode width L2 of the upper electrode 340 and the adjacent two upper electrodes 320 is referred to as a duty ratio, and the magnitude of the duty ratio is not particularly limited as long as the duty ratio enables the liquid crystal grating structure 300 to have a voltage difference between the upper and lower electrodes.
- the emitted light of the backlight module 100 may have a diverging effect.
- the duty ratio may be 50%, that is, the distance D1 between the adjacent two lower electrodes 320 is equal to the width L1 of the lower electrode 320, and the distance between the adjacent two upper electrodes 340. D2 is equal to the width L2 of the upper electrode 340.
- the voltage signals respectively applied to the lower electrode 320 and the upper electrode 340 are not particularly limited as long as the voltage signal enables the liquid crystal grating structure 300 to have a voltage difference between the upper and lower electrodes to the backlight mode.
- the emitted light of the group 100 has a diverging effect.
- the upper electrode 340 is loaded with the same voltage as the voltage applied to the common electrode 270, such as a common voltage of 0V.
- the voltage applied to the lower electrode 320 can be It is an arbitrary voltage which has a voltage difference between the upper and lower electrodes, for example, a square wave voltage of ⁇ Vop.
- the pitch of the lower electrode 320 i.e., the distance between the centers of the adjacent two lower electrodes 320
- the pitch of the upper electrode 340 i.e., between the centers of the adjacent two upper electrodes 340
- the distance is not particularly limited as long as the pitch enables the liquid crystal grating structure 300 to have a diverging effect on the emitted light of the backlight module 100 in a state where a voltage difference between the upper and lower electrodes is present.
- the pitch of the lower electrode 320 of the liquid crystal grating structure 300 and the pitch of the upper electrode 340 may be 1.5-3.5 microns.
- the liquid crystal grating structure 300 adopting the above-mentioned pitch range can have a good diverging effect on visible light in a state of having a voltage difference between the lower electrodes on the water, thereby effectively realizing the shared display mode.
- the pitch of the lower electrode 320 of the liquid crystal grating structure 300 and the pitch of the upper electrode 340 may be 1.5 ⁇ m; thus, the liquid crystal grating structure 300 can have a wavelength of 380 to 760 nm in a state of having a voltage difference between the upper and lower electrodes.
- the range of visible light has a good divergence effect, which effectively achieves a shared display mode.
- the thickness of the liquid crystal grating structure 300 is not particularly limited as long as the thickness enables the liquid crystal grating structure 300 to diverge toward the emitted light of the backlight module 100 in a state where a voltage difference between the upper and lower electrodes is present. The effect is fine.
- the thickness of the liquid crystal grating structure 300 needs to satisfy the optical path difference of the electrode region in which the electrode is disposed and the non-electrode region in which the electrode is not disposed in the state where the voltage difference between the upper and lower electrodes is in the incident light.
- the half wavelength or the half wavelength of the incident light is the sum of the integer multiples of the wavelength of the incident light.
- the liquid crystal grating structure 300 having the above thickness in a state where there is a voltage difference between the upper and lower electrodes, the light emitted through the grating can be diffracted, whereby the diverging effect of the emitted light is better.
- the specific material of the liquid crystal layer 330 is not particularly limited as long as the liquid crystal material enables the liquid crystal grating structure 300 to have a light emission to the backlight module 100 in a state where a voltage difference between the upper and lower electrodes is present.
- the divergence effect can be.
- the liquid crystal layer 330 is formed of an electrically controlled birefringence (ECB) liquid crystal.
- ECB electrically controlled birefringence
- the liquid crystal molecules are disposed such that the long axis direction coincides with the transmission axis direction of the lower polarizer 204 of the display module 200 to achieve a diverging effect and a display function.
- the liquid crystal layer 330 may be formed of a positive ECB liquid crystal.
- the pretilt angle of the initial state of the liquid crystal molecules 3 (that is, the angle between the liquid crystal molecules 3 and the substrates 310, 350 in the initial state) is 0 degrees, and the long axis direction of the liquid crystal molecules 3 is parallel to the upper electrode 340 and The extending direction of the lower electrode 320.
- the backlight module 200 emits natural light. Referring to FIG. 3, it can be considered that the natural light is composed of horizontally polarized light and vertically polarized light, and the light propagation direction is the propagation direction of the vertical paper surface.
- the refractive index of the liquid crystal molecules 3 to the horizontally polarized light is no, and the refractive index of the vertically polarized light is ne, and the natural light can normally pass through the liquid crystal.
- the grating structure 300 is not diverged, and the anti-spy display mode is realized. At this time, the liquid crystal grating structure 300 does not have a diverging effect on the light from the backlight module 200.
- the liquid crystal molecules between the upper electrode 340 and the lower electrode 320 are deflected by the electric field, and the liquid crystal gradually appears.
- the erecting is parallel to the direction of light propagation.
- the liquid crystal molecules are less affected, and the liquid crystal molecules 3 are not erected and remain substantially in an initial state.
- the refractive index is non-noise everywhere, and the light is normally transmitted.
- the refractive index is different in the electrode region and the non-electrode region, and the optical path difference is different. Equivalent to the grating structure, the vertical polarized light is angularly deflected, so that the divergence angle becomes larger, and the shared display mode is realized. It should be noted that since the transmission direction of the lower polarizing plate of the display device is parallel to the long-axis direction of the liquid crystal molecules, the horizontally polarized light cannot pass through the display device.
- the liquid crystal layer 330 may be formed of a negative ECB liquid crystal.
- the pretilt angle of the initial state of the liquid crystal molecules 3 is 90 degrees, and the long axis direction of the liquid crystal molecules 3 is perpendicular to the extending direction of the upper electrode 340 and the lower electrode 320.
- the refractive index of the liquid crystal molecules 3 to the horizontally polarized light is no, and the refractive index of the vertically polarized light is no, from the backlight module 100.
- the natural light can normally pass through the liquid crystal grating structure 300 without being diverged, thereby realizing the anti-spy display mode.
- the liquid crystal molecules between the upper electrode 340 and the lower electrode 320 are deflected by the electric field, and the liquid crystal gradually becomes horizontal.
- the liquid crystal molecules are less affected, and the liquid crystal molecules 3 are not in a horizontal state and remain substantially in an initial state.
- the refractive index is non-noise everywhere, and the light is normally transmitted.
- the refractive index is different in the electrode region and the non-electrode region, and the optical path difference is different. Equivalent to the grating structure, the vertical polarized light is angularly deflected, so that the divergence angle becomes larger, and the shared display mode is realized. It should be noted that since the transmission direction of the lower polarizing plate of the display device is parallel to the long-axis direction of the liquid crystal molecules, the horizontally polarized light cannot pass through the display device.
- the lower substrate 310, the upper substrate 350, the lower electrode 320, and the upper electrode 340 of the liquid crystal grating structure 300 are all formed of a transparent material, so that the entire liquid crystal is not present in a state where there is no voltage difference between the lower electrode 320 and the upper electrode 340.
- the grating structures 300 are all light transmissive and have a first transmittance. In a state where there is a voltage difference between the lower electrode 320 and the upper electrode 340, the entire liquid crystal grating structure 300 is also light transmissive, that is, the electrode region and the non-electrode region of the liquid crystal grating structure 300 are both light transmissive;
- the liquid crystal grating structure 300 has a second light transmittance.
- the second light transmittance is substantially the same as the first light transmittance.
- the optical path difference is a sum of a half wavelength of the incident light or a half wavelength of the incident light and an integral multiple of the wavelength of the incident light.
- the display device may further include a backlight collimating structure 400 disposed between the liquid crystal grating structure 300 and the backlight module 200.
- the backlight collimating structure 400 the divergence angle of the light emitted by the backlight module 200 can be limited to a certain small angle range, so that the anti-spy display in the small angle range of the display device can be better realized. mode.
- the specific structure of the backlight collimating structure 400 is not particularly limited as long as the backlight collimating structure 400 can effectively limit the divergence angle of the light emitted by the backlight module 200 to a certain small angle range.
- the backlight collimating structure 400 is a peeping film produced by 3M Company.
- the angular range of the outgoing light of the backlight module 200 after passing through the backlight collimating structure 400 is not particularly limited.
- the angle of the exit light of the backlight module 200 after passing through the backlight collimating structure 400 may range from -30° to 30°. The design allows the display device to protect personal privacy in the anti-spy display mode.
- the range of the divergence angle of the emitted light after passing through the backlight collimating structure 400 and the liquid crystal grating structure in the divergent mode is not particularly limited, that is, the sharing angle range of the display device may be according to the use requirements of the display device.
- the divergence angle of the outgoing light after passing through the backlight collimating structure 400 and the liquid crystal grating structure in the divergent mode may range from -60 to 60. The design allows the display device to share display information with multiple people in a shared display mode.
- a display device in which a liquid crystal grating structure is disposed between a backlight module and a display module.
- the display device can be switched between different display modes, and the switching operation is simple, the cost is low, and the potential of industrial mass production is obtained.
- an embodiment of the invention provides a display device.
- the display device comprises the display device described above.
- the display device has all of the features and advantages of the display device described above, and will not be further described herein.
- the type of the display device is not limited, and may be any device, device, or the like that can implement a display function.
- the display device may be a mobile phone, a tablet computer, a television set, a computer display, a game machine, a wearable device, and a living room, a home appliance, or the like having a display panel.
- the display device may further comprise other necessary components and components constituting the conventional display device, for example, a mobile phone is taken as an example, and may further include a touch screen, a fingerprint recognition module,
- the camera module, the battery, the CPU, the mobile phone casing, and the like constitute the necessary structures and components of the conventional mobile phone, and those skilled in the art can select according to the usage of the specific display device, and details are not described herein again.
- a display device is proposed. Since the display device can switch between different display modes, the display mode of the display device is increased, which can satisfy the user's anti-peeping demand in a private environment. Moreover, the sharing mode in other occasions can be realized, thereby meeting the different viewing needs of the user of the display device.
- an embodiment of the invention provides a display method of a display device.
- FIG. 6 is a schematic flow chart of a display method according to an embodiment of the present invention.
- the structure of the display device can be referred to FIG. 1 .
- the display device includes a backlight module 100 , a display module 200 , and a liquid crystal grating structure 300 .
- the liquid crystal grating structure 300 is disposed on the backlight module 100 . Between the display module 200 and the display module 200.
- the display method may include:
- S100 Determine a display mode, and the display mode is selected from a privacy mode and a sharing mode.
- the display mode is determined according to the environmental requirements of the user of the display device. For example, in a private environment, the display mode of the display device is required to be a privacy mode, and in other cases, the display device needs to be shared with others, and the display mode of the display device is required to be a shared mode.
- step S200 Adjust an operation mode of the liquid crystal grating structure based on the display mode determined in step S100.
- the operating mode of the liquid crystal grating structure 300 of the display device is further adjusted, thereby implementing the anti-spy mode or the sharing mode of the display device.
- the liquid crystal grating structure employs a non-diverging mode for the anti-spy mode.
- the divergence angle thereof can be limited to a certain small angle range, thereby realizing the anti-spy display mode in a small angle range of the display device.
- the liquid crystal grating structure 300 is in a non-diverging mode, and the emitted light passes through the liquid crystal grating structure 300 to maintain a small angle of divergence angle range, thereby realizing the anti-spy mode of the display device.
- the liquid crystal grating structure employs a divergent mode for the sharing mode.
- the light exiting through the backlight collimating structure 400 is in a small angular range, and at this time, the liquid crystal grating structure 300 is in a divergent mode, and the emitted light can be diverged into a large angle range, thereby realizing the sharing mode of the display device.
- the operation mode of adjusting the structure of the liquid crystal grating can be realized by adjusting the voltage applied to the structure of the liquid crystal grating.
- the liquid crystal grating structure 300 may include a lower substrate 310, a plurality of lower electrodes 320, a liquid crystal layer 330, a plurality of upper electrodes 340, and an upper substrate 350 in order from bottom to top; wherein the plurality of lower electrodes 320 are arranged in parallel at intervals
- the upper surface of the substrate 310, the liquid crystal layer 330 is disposed on the lower substrate 310 and the plurality of lower electrodes 320.
- the upper substrate 350 is disposed on the liquid crystal layer 330, and the plurality of upper electrodes 340 are arranged in parallel on the lower surface of the upper substrate 350, and The upper electrode 340 has a one-to-one correspondence with the plurality of lower electrodes 320.
- the liquid crystal grating structure 300 in the non-diverging mode, there is no voltage difference between the upper and lower electrodes, and the light from the backlight module 100 directly passes through the liquid crystal grating structure 300 without being diverged, thereby realizing the anti-spy display mode of the display device. .
- liquid crystal grating structure 300 in the diverging mode, there is a voltage difference between the upper and lower electrodes, so that liquid crystal molecules in the electrode regions provided with the upper and lower electrodes are deflected at a specific angle, so that the backlight
- the range of the angle of the light emitted by the module is increased, thereby realizing the shared display mode of the display device.
- the voltage difference between the upper and lower electrodes of the liquid crystal grating structure is sufficient to deflect the liquid crystal molecules of the liquid crystal grating structure.
- the voltage difference between the upper and lower electrodes of the liquid crystal grating structure is zero.
- a display method which can adjust a working mode of a liquid crystal grating structure by determining a display mode, thereby realizing that the display device is in a peep prevention mode or a sharing mode, thereby enabling the display device to satisfy different users. Random switching of display modes between environmental usage requirements.
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Abstract
Description
Claims (17)
- 一种显示器件,包括:背光源模组;显示模组;液晶光栅结构,所述液晶光栅结构设置在所述背光源模组和所述显示模组之间。
- 根据权利要求1所述的显示器件,其中,所述液晶光栅结构具有发散模式和非发散模式,在发散模式下,所述液晶光栅结构对来自所述背光源模组的光进行发散,在非发散模式下,所述液晶光栅结构对来自所述背光源模组的光不进行发散。
- 根据权利要求2所述的显示器件,其中,所述液晶光栅结构包括:下基板;多个下电极,所述多个下电极平行间隔排列于所述下基板的上表面;液晶层,所述液晶层设置在所述下基板和所述多个下电极上;上基板,所述上基板设置在所述液晶层上;以及多个上电极,所述多个上电极平行间隔排列于所述上基板的下表面,并且与所述多个下电极一一对应,在发散模式下,所述液晶光栅结构的上电极和下电极之间具有电压差,在非发散模式下,所述液晶光栅结构的上电极和下电极之间不具有电压差。
- 根据权利要求3所述的显示器件,其中,任意相邻两个所述下电极之间的距离相等,任意相邻两个所述上电极之间的距离相等。
- 根据权利要求4所述的显示器件,其中,相邻两个所述下电极之间的距离与所述下电极的宽度相等,相邻两个所述上电极之间的距离与所述上电极的宽度相等。
- 根据权利要求3所述的显示器件,其中,任意相邻两个所述下电极的中心之间的距离以及任意相邻两个所述上电极的中心之间的距离是1.5-3.5微米。
- 根据权利要求6所述的显示器件,其中,任意相邻两个所述下电极的 中心之间的距离以及任意相邻两个所述上电极的中心之间的距离是1.5微米。
- 根据权利要求3-7任一项所述的显示器件,其中,在发散模式下,所述液晶光栅结构的设置有所述上、下电极的电极区域与未设置所述上、下电极的非电极区域的光程差为入射光的半波长或入射光的半波长与入射光的波长的整数倍之和。
- 根据权利要求3-7任一项所述的显示器件,其中,所述液晶层由电控双折射型液晶形成。
- 根据权利要求3-7任一项所述的显示器件,其中,所述显示模组包括:彼此相对设置的阵列基板和对置基板,与所述对置基板相比所述阵列基板设置得更靠近所述液晶光栅结构;显示液晶层,设置在所述阵列基板和所述对置基板之间;下偏光片,设置在所述阵列基板的远离所述对置基板的一侧;以及上偏光片,设置在所述对置基板的远离所述阵列基板的一侧,所述液晶光栅结构的液晶层中的液晶分子设置为长轴方向与所述显示模组的下偏光片的透过轴方向一致。
- 根据权利要求3-7任一项所述的显示器件,其中,在发散模式下,所述液晶光栅结构的所述上电极和所述下电极之间的电压差越大,来自所述背光源模组的光在经过所述液晶光栅结构之后具有的角度范围越大。
- 根据权利要求1-11任一项所述的显示器件,还包括:背光准直结构,所述背光准直结构设置在所述液晶光栅结构和所述背光源模组之间。
- 一种显示装置,包括权利要求1-12任一项所述的显示器件。
- 一种显示器件的显示方法,其中,所述显示器件包括背光源模组、显示模组和液晶光栅结构,所述液晶光栅结构设置在所述背光源模组和所述显示模组之间,所述显示方法包括:确定显示模式,所述显示模式选自防窥模式和共享模式;基于所确定的所述显示模式,调整所述液晶光栅结构的工作模式,针对所述防窥模式,所述液晶光栅结构采用非发散模式,针对所述共享模式,所述液晶光栅结构采用发散模式。
- 根据权利要求14所述的显示方法,其中,所述液晶光栅结构包括:下基板;多个下电极,所述多个下电极平行间隔排列于所述下基板的上表面;液晶层,所述液晶层设置在所述下基板和所述多个下电极上;上基板,所述上基板设置在所述液晶层上;以及多个上电极,所述多个上电极平行间隔排列于所述上基板的下表面,并且与所述多个下电极一一对应,所述显示方法包括:使所述液晶光栅结构的上电极和下电极之间具有电压差,从而使所述液晶光栅结构处于发散模式;或者使所述液晶光栅结构的上电极和下电极之间不具有电压差,从而使所述液晶光栅结构处于非发散模式。
- 根据权利要求14或15所述的显示方法,其中,在发散模式下,所述液晶光栅结构的设置有所述上、下电极的电极区域与未设置所述上、下电极的非电极区域的光程差为入射光的半波长或入射光的半波长与入射光的波长的整数倍之和。
- 根据利要求14或15所述的显示方法,其中,在发散模式下,所述液晶光栅结构的所述上电极和所述下电极之间的电压差越大,来自所述背光源模组的光在经过所述液晶光栅结构之后具有的角度范围越大。
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CN109143635A (zh) * | 2018-10-25 | 2019-01-04 | 京东方科技集团股份有限公司 | 显示装置和显示方法 |
CN109239996B (zh) * | 2018-11-23 | 2022-04-29 | 京东方科技集团股份有限公司 | 一种显示装置及显示方法 |
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CN105589256A (zh) * | 2016-03-11 | 2016-05-18 | 京东方科技集团股份有限公司 | 显示装置 |
CN105717705A (zh) * | 2016-04-26 | 2016-06-29 | 京东方科技集团股份有限公司 | 背光模组和显示装置 |
CN205809496U (zh) * | 2016-07-18 | 2016-12-14 | 京东方科技集团股份有限公司 | 显示面板和显示装置 |
CN106054423A (zh) * | 2016-08-17 | 2016-10-26 | 京东方科技集团股份有限公司 | 一种显示模组及显示装置 |
CN106444175A (zh) * | 2016-09-28 | 2017-02-22 | 哈尔滨工程大学 | 一种电控连续调谐衍射光斑位置的相位型液晶光栅及其制作方法 |
CN106249492A (zh) * | 2016-10-12 | 2016-12-21 | 京东方科技集团股份有限公司 | 显示装置及其工作方法 |
CN106873283A (zh) * | 2017-03-17 | 2017-06-20 | 京东方科技集团股份有限公司 | 显示器件、显示装置和显示方法 |
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US20190294001A1 (en) | 2019-09-26 |
US10712611B2 (en) | 2020-07-14 |
CN106873283A (zh) | 2017-06-20 |
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