CN109143635A - Display device and display methods - Google Patents
Display device and display methods Download PDFInfo
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- CN109143635A CN109143635A CN201811250296.7A CN201811250296A CN109143635A CN 109143635 A CN109143635 A CN 109143635A CN 201811250296 A CN201811250296 A CN 201811250296A CN 109143635 A CN109143635 A CN 109143635A
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- peep
- proof
- light
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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
-
- 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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Geometry (AREA)
- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention provides a kind of display device and display methods, wherein display device includes: peep-proof backlight module, and for projecting peep-proof light from the light-emitting surface of peep-proof backlight module, the angle between peep-proof light and the normal of light-emitting surface is less than predetermined angle；Show switching module, the display switching module is set to the light emission side of peep-proof backlight module, display switching module can switch between the first state and a second state, when showing switching module in the first state, not change the direction of propagation of the peep-proof light of peep-proof backlight module injection；When showing switching module in the second condition, change the direction of propagation for the peep-proof light that peep-proof backlight module projects, so that the angle between peep-proof light and the normal of the light-emitting surface of display switching module is greater than predetermined angle.Display device and display methods provided by the invention can be such that display device switches between peep-proof function and display picture are shared.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of display devices and display methods.
Background technique
With the development of network technology, more and more people do shopping on network or the operations such as account trading.?
During aforesaid operations, user is frequently necessary to input the privacies such as personal information, password letter in the display devices such as computer, mobile phone
Breath, and the people of surrounding may view the leakage that these privacy informations cause user privacy information.Therefore, more and more displays
Device has peep-proof function.
In the prior art, with peep-proof function display device it can be seen that display picture limited angle, be difficult and he
People is shared simultaneously to show picture.
Summary of the invention
The embodiment of the present invention provides a kind of display device and display methods, to solve to have the display device energy of peep-proof function
The limited angle for enough seeing display picture is difficult the problem of sharing display picture simultaneously with other people.
It is as follows that in order to solve the above technical problem, the present invention provides technical solutions:
In a first aspect, the embodiment of the present invention provides a kind of display device, comprising:
Peep-proof backlight module, for projecting peep-proof light, the peep-proof light from the light-emitting surface of the peep-proof backlight module
Angle between the normal of the light-emitting surface is less than predetermined angle；
Show that switching module, the display switching module are set to the light emission side of the peep-proof backlight module, the display
Switching module can switch between the first state and a second state, when the display switching module in the first state when, no
Change the direction of propagation for the peep-proof light that the peep-proof backlight module projects；When the display switching module in the second condition
When, change the direction of propagation for the peep-proof light that the peep-proof backlight module projects, so that the peep-proof light is cut with the display
Angle between the normal of the light-emitting surface of mold changing group is greater than the predetermined angle.
Further, the display switching module includes:
First electrode, second electrode and the liquid crystal layer between the first electrode and the second electrode, the liquid
Liquid crystal in crystal layer can deflect under the electric field action of the first electrode and the second electrode；
The second electrode correspond to a sub-pixel open area in be provided with multiple strip shaped electric poles, the multiple strip
Electrode includes the first strip shaped electric poles in the first plane and the second strip shaped electric poles in the second plane, wherein described
First plane is different from second plane.
Further, first strip shaped electric poles and second strip shaped electric poles are arranged alternately, first strip shaped electric poles
Between gap orthographic projection on the first electrode and the orthographic projection of second strip shaped electric poles on the first electrode
It is overlapped.
Further, first plane is parallel to second plane, first strip shaped electric poles and the Article 2
Shape electrode is spaced apart by insulating layer.
Further, the display switching module further include:
First alignment layer between the first electrode and the liquid crystal layer；
Second orientation layer between the second electrode and the liquid crystal layer；
The differently- oriented directivity of the first alignment layer is vertical with the differently- oriented directivity of the second orientation layer.
Further, the display switching module further include:
Positioned at the first electrode away from the first polarizing film of the side of the liquid crystal layer；
Positioned at the second electrode away from the second polarizing film of the side of the liquid crystal layer；
The light transmission axis direction of first polarizing film is vertical with the light transmission axis direction of second polarizing film.
Further, the peep-proof backlight module includes:
Backlight module；
Peep-proof film, the peep-proof film are set on the light-emitting surface of the backlight module, for that will penetrate from the backlight module
Light out is configured to the peep-proof light.
Second aspect, the embodiment of the present invention also provide a kind of display methods, are applied to display device as described above, method
Include:
Receive switching command；
It controls the display switching module and switches to first state, do not change the peep-proof light that the peep-proof backlight module projects
The direction of propagation of line；Alternatively, the control display switching module switches to the second state, changes the peep-proof backlight module and project
Peep-proof light the direction of propagation so that the peep-proof light and it is described display switching module light-emitting surface normal between folder
Angle is greater than the predetermined angle.
Further, the control display switching module switches to first state, does not change the peep-proof backlight mould
The step of direction of propagation for the peep-proof light that group projects, comprising:
Identical driving voltage is inputted to first strip shaped electric poles and second strip shaped electric poles, controls liquid crystal described
Evenly distributed in liquid crystal layer, the liquid crystal in the liquid crystal layer does not change the propagation for the peep-proof light that the peep-proof backlight module projects
Direction.
Further, the control display switching module switches to the second state, changes the peep-proof backlight module
The direction of propagation of the peep-proof light of injection, so that between the peep-proof light and the normal of the light-emitting surface of the display switching module
Angle be greater than the predetermined angle the step of, comprising:
Different driving voltages is inputted to first strip shaped electric poles and second strip shaped electric poles, controls liquid crystal described
Domes are formed in liquid crystal layer, the liquid crystal in the liquid crystal layer dissipates the biography for the peep-proof light that the peep-proof backlight module projects
Direction is broadcast, so that the angle between the peep-proof light and the normal of the light-emitting surface of the display switching module is greater than described preset
Angle.
In technical solution provided by the invention, when the display switching module in the first state when, do not change described anti-
Peep the direction of propagation of the peep-proof light of backlight module injection；When the display switching module in the second condition when, described in change
The direction of propagation for the peep-proof light that peep-proof backlight module projects, so that the light out of the peep-proof light and the display switching module
Angle between the normal in face is greater than the predetermined angle.As a result, by control display switching module in first state and second
Switch between state, so that display device be made to switch between peep-proof function and display picture are shared.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed in being described below to the embodiment of the present invention
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without any creative labor, it can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 a is the position view of the light that display device projects under peep-proof state and eyes；
Fig. 1 b is the position view of display device projects under shared state light and eyes；
Fig. 2 is a kind of schematic diagram of display device provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of another display device provided in an embodiment of the present invention；
Fig. 4 is to show that switching module is in showing under first state in another display device provided in an embodiment of the present invention
It is intended to；
Fig. 5 is to show that switching module is in showing under the second state in another display device provided in an embodiment of the present invention
It is intended to；
Fig. 6 is the distribution map of the corresponding optical path difference of different location in liquid crystal layer in Fig. 5；
Fig. 7 is the distribution map for showing optical path difference when switching module is under the second state and V2 is different voltages value；
Fig. 8 is a kind of flow chart of display methods provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
The peep-proof function of display device needs to guarantee the normal of the emergent ray of display device and the light-emitting surface of display device
Angle be less than or equal to predetermined angle, can make the people of surrounding that can not spy upon the display picture of display device in this way, such as figure
Shown in 1a.And the more people of display device needs share when showing picture, everyone eyes require to receive emergent ray, in this way
It is required that the angle of the normal of the light-emitting surface of the emergent ray and display device of display device is greater than predetermined angle, as shown in Figure 1 b.
Maximum angle of the emergent ray in the plane perpendicular to light-emitting surface is the angle of divergence of emergent ray, i.e. emergent ray and light-emitting surface
2 times of maximum angle of normal.
Display device in the prior art, same display device can not reduce emergent ray in the case where both needing peep-proof
The angle of divergence realize peep-proof function, and in the case where not needing peep-proof function expand emergent ray the angle of divergence realize display picture
It shares in face.
The embodiment of the present invention can adjust emergent light in view of the above-mentioned problems, provide a kind of display device and display methods
The angle of divergence of line, so solve have peep-proof function display device it can be seen that display picture limited angle, be difficult and he
People shares the problem of display picture simultaneously.
As shown in Fig. 2, the embodiment of the present invention provides a kind of display device 200, comprising:
Peep-proof backlight module 210, it is described anti-for projecting peep-proof light from the light-emitting surface of the peep-proof backlight module 210
The angle peeped between light and the normal of the light-emitting surface is less than predetermined angle；
Show that switching module 220, the display switching module 220 are set to the light emission side of the peep-proof backlight module 210,
The display switching module 220 can switch between the first state and a second state, when the display switching module 220 is
When under one state, the direction of propagation for the peep-proof light that the peep-proof backlight module 210 projects is not changed；When the display switches mould
When organizing 220 in the second condition, change the direction of propagation for the peep-proof light that the peep-proof backlight module 210 projects, so that described
Angle between peep-proof light and the normal of the light-emitting surface of the display switching module 220 is greater than the predetermined angle.
In technical solution provided by the invention, when the display switching module 220 in the first state when, do not change described
The direction of propagation for the peep-proof light that peep-proof backlight module 210 projects；When the display switching module 220 in the second condition when,
Change the direction of propagation for the peep-proof light that the peep-proof backlight module 210 projects, so that the peep-proof light is cut with the display
Angle between the normal of the light-emitting surface of mold changing group 220 is greater than the predetermined angle.Pass through control display switching module as a result,
220 switch between the first state and a second state, to make display device 200 between peep-proof function and display picture are shared
It switches over.
Above-mentioned display switching module 220 can be attached on the light-emitting surface of peep-proof backlight module 210, can also be carried on the back with peep-proof
The light-emitting surface interval of optical mode group 210 is arranged, and the light-emitting surface of display device 200 is the light-emitting surface for showing switching module 220.
Above-mentioned display switching module 220 in the second state, can to peep-proof backlight module 210 project peep-proof light into
Row scattering processing, thus increase the angle of divergence of peep-proof light, so that the light projected from the light-emitting surface of display switching module 210
The angle of divergence is greater than the angle of divergence of peep-proof light.
Above-mentioned predetermined angle can be 30 °, the i.e. method of the peep-proof light and the light-emitting surface of the injection of peep-proof backlight module 210
Angle between line is less than predetermined angle.Certainly, predetermined angle is also possible to 25 °, 33 ° or 35 ° etc., different peep-proof backlights
Mould group 210 can correspond to different predetermined angles.
In some alternative embodiments, as shown in figure 3, display switching module 220 includes:
First electrode 221, second electrode 222 and the liquid crystal layer 223 between first electrode 221 and second electrode 222,
Liquid crystal in the liquid crystal layer 223 can deflect under the electric field action of the first electrode 221 and the second electrode 222；
The second electrode 222 correspond to a sub-pixel open area in be provided with multiple strip shaped electric poles, the multiple strip shaped electric poles
Including the first strip shaped electric poles 2221 in the first plane and the second strip shaped electric poles 2222 in the second plane, wherein
First plane is different from second plane.
The peep-proof light that peep-proof backlight module 210 projects is needed can going out from display device 200 by liquid crystal layer 223
Smooth surface projects, wherein the different deflection angles and arrangement mode of the liquid crystal in liquid crystal layer 223 can be to the propagation sides of peep-proof light
To impacting.
By controlling the electric field formed by first electrode 221 and second electrode 222, so as to control the deflection angle of liquid crystal
Degree and arrangement mode realize that display switching module 220 switches between the first state and a second state.
When showing switching module 202 in the first state, first electrode 221 and second electrode 222 can form vertical electricity
, so that liquid crystal in liquid crystal layer 223 in evenly distributed, will not change the peep-proof light projected from peep-proof backlight module 210
The direction of propagation will not change the angle of divergence of peep-proof light.Certainly, electric field be other forms make liquid crystal in other arrangement modes and
The case where not changing the angle of divergence of peep-proof light also belongs to the protection scope of the present embodiment.
For forming vertical electric field between first electrode 221 and second electrode 222: to the first strip shaped electric poles 2221 and
Two strip shaped electric poles 2222 input identical driving voltage V0, and when inputting driving voltage V1 (V1 ≠ V0) to first electrode 221, the
It is capable of forming vertical electric field between two electrodes 222 and first electrode 221, as shown in Figure 4.
Show switching module 220 in the second condition, the liquid crystal in liquid crystal layer 223 can form optical grating construction, diverging from
The direction of propagation for the peep-proof light that peep-proof backlight module 210 projects increases the angle of divergence of peep-proof light.Certainly, liquid crystal is in it
His arrangement mode and the case where increasing the angle of divergence of peep-proof light, also belong to the protection scope of the present embodiment.
By taking the Formation of liquid crystals in liquid crystal layer 223 is capable of the arch optical grating construction of divergent rays as an example: to the first strip shaped electric poles
2221 input driving voltage V2, driving voltage V0 is inputted to the second strip shaped electric poles 2222 and first electrode 221, wherein V2 is greater than
V0, the liquid crystal in liquid crystal layer 223 can form arch grating (as shown in Figure 5), to the peep-proof projected from peep-proof backlight module 210
Light is dissipated.Wherein, the radian of the bigger domes of the voltage value of V2 is also bigger.
It should be noted that the adjusting of the radian of domes and grayscale adjusting carry out simultaneously, when V2 reaches default
After voltage, domes make peep-proof light and show that the angle between the normal of the light-emitting surface of switching module 220 is greater than preset angle
Degree achievees the effect that shared display picture.If continuing growing V2, although the diverging of peep-proof light can be further increased
Angle, but the angle of divergence that peep-proof light is further added by the case where having been carried out picture and sharing no longer has been the purpose for increasing V2
?.Due to that can bring the variation of grayscale while voltage increases, V2 continues growing V2 after achieving the purpose that predeterminated voltage
It is to realize that the grayscale of display device is shown by the increase of voltage.Wherein, the characteristic of predeterminated voltage and display device and default
Angle is related.
Referring to Fig. 6, Fig. 6 is that display switching module 220 is in the corresponding light path of liquid crystal layer different location under the second state
The distribution map of difference.As can be seen from Figure 6 liquid crystal is different in different location deflection angle, and caused optical path difference is also different.Light path
The domed distribution of difference, can be equivalent to arch grating, screen periods are identical as the electrode period, and grating sagitta can pass through arch
Peak value is calculated with valley, and the angle of divergence of the more high increased peep-proof light of grating sagitta is bigger, the available display from Fig. 6
Angle between the normal of the light-emitting surface of the emergent ray and display switching module 220 of switching module 220 increases to 60 °.
Referring to Fig. 7, Fig. 7 is optical path difference when display switching module 220 is under the second state and V2 is different voltages value
Distribution map.As can be seen from Figure 7 when driving voltage V2 is greater than 6V, hair of the sagitta without significant change, i.e., to peep-proof light
It is unobvious to dissipate angle increase, but voltage change can produce different grayscale, therefore show that switching module 220 is in the second state
Under, display device 200 can also realize that grayscale is shown.
In the present embodiment, the shape of the first strip shaped electric poles 2221 and the distribution of the second strip shaped electric poles 2222 in second electrode 222
Formula can be multiplicity, such as: according to Fig. 3 direction the first strip shaped electric poles 2221 from left to right and the second strip shaped electric poles 2222
2. 1. 2. 1. 1. putting in order can be, or 2. 1. 2. 1. etc. sequence, wherein 1. above-mentioned indicate the
One strip shaped electric poles 2221, it is above-mentioned 2. to indicate the second strip shaped electric poles 2222.
In addition, first electrode 221 and second electrode 222 can be and be set on glass substrate, in 221 He of first electrode
In the case that second electrode 222 is located at 223 opposite sides of liquid crystal layer, glass substrate is two and is located at liquid crystal layer
223 opposite sides (as shown in Figure 3, wherein the layer structure for being not filled by pattern is glass substrate).
Further, as shown in figure 3, first strip shaped electric poles 2221 and second strip shaped electric poles 2222 can be friendship
Orthographic projection of the gap in the first electrode 221 and the Article 2 for arrangement, between first strip shaped electric poles 2221
Orthographic projection of the shape electrode 2222 in the first electrode 221 is overlapped.
Two strip shaped electric poles of arbitrary neighborhood can make the Formation of liquid crystals arch grating in liquid crystal layer 223 in the structure,
The quantity of the arch grating formed in liquid crystal layer 223 is more, can be improved to the peep-proof light projected from peep-proof backlight module 210
Dissipating effect.
Further, as shown in figure 3, first plane is parallel to second plane, first strip shaped electric poles
2221 and second strip shaped electric poles 2222 by insulating layer be spaced apart.
First plane is parallel with the second plane, can reduce the thickness of second electrode 222, convenient for the lightening of display device
Design.And separated the first strip shaped electric poles 2221 and the insulation of the second strip shaped electric poles 2222 by insulating layer, it can be avoided first
Short circuit is caused between strip shaped electric poles 2221 and the second strip shaped electric poles 2222, it is ensured that display device 200 is in the second condition to light
The effect of diverging.
Further, as shown in figure 3, the display switching module 220 can also include:
First alignment layer 224 between the first electrode 221 and the liquid crystal layer 223；
Second orientation layer 225 between the second electrode 222 and the liquid crystal layer 223；
The differently- oriented directivity of the first alignment layer 224 is vertical with the differently- oriented directivity of the second orientation layer 225.
Vertical orientation can be carried out respectively to first alignment layer 224 and second orientation layer 225 in advance, such as: it can use
Friction matching technology or light alignment technique, do not limit this.With backward first alignment layer 224 and second orientation layer 225
The liquid crystal in liquid crystal layer 223 can be orientated in no electric field.Such as: in the absence of an electric field, first orientation
The differently- oriented directivity of layer 224 is parallel to paper, and second orientation layer 225 is perpendicular to paper (as shown in Figure 3)；Alternatively, it is also possible to being
The differently- oriented directivity of one oriented layer 224 is parallel to paper, does not limit this perpendicular to paper, second orientation layer 225.
Above-mentioned first alignment layer 224 and second orientation layer 225 can be polyimide material.
Further, as shown in figure 3, the display switching module 220 can also include:
Positioned at the first electrode 221 away from the first polarizing film 226 of the side of the liquid crystal layer 223；
Positioned at the second electrode 222 away from the second polarizing film 227 of the side of the liquid crystal layer 223；
The light transmission axis direction of first polarizing film 226 is vertical with the light transmission axis direction of second polarizing film 227.
Relationship between the light transmission axis direction of first polarizing film 226 and the light transmission axis direction of the second polarizing film 227, can be
The light transmission axis direction of first polarizing film 226 is oriented parallel to paper (such as Fig. 3 perpendicular to paper, the light transmission shaft of the second polarizing film 227
It is shown)；The light transmission shaft for being also possible to the first polarizing film 226 is oriented parallel to paper, and the light transmission axis direction of the second polarizing film 227 is hung down
Directly in paper.
By taking Fig. 3 as an example, when having above-mentioned first alignment layer 224 and second orientation layer 225, liquid crystal is close to first alignment layer
The long axis direction of 224 liquid crystal is vertical with the light transmission axis direction of the first polarizing film, liquid crystal of the liquid crystal close to second orientation layer 225
Long axis direction is vertical with the light transmission axis direction of the second polarizing film.
In addition, being driven to the first strip shaped electric poles input driving voltage V2, to the second strip shaped electric poles and the input of first electrode 221
After dynamic voltage V0 and V2 reach certain voltage value, when the long axis direction of liquid crystal is deflected to perpendicular to strip shaped electric poles direction, in conjunction with the
The dark-state that one polarizing film 226 and the second polarizing film 227 can be realized display device 200 is shown.
In addition, in some alternative embodiments, display device 200 can also include color film layer (not shown), the coloured silk film
Layer is set to liquid crystal layer 223 close to the side of the first polarizing film 226, can be improved display device 200 to the display effect of color.
In some alternative embodiments, the peep-proof backlight module 210 may include:
Backlight module；
Peep-proof film, the peep-proof film are set on the light-emitting surface of the backlight module, for that will penetrate from the backlight module
Light out is configured to the peep-proof light.
Conventional backlit mould group is used, and changing for the direction of propagation is carried out to the light that backlight module projects by peep-proof film
Become, so that be less than predetermined angle from the angle between the normal of the light-emitting surface of light and peep-proof film that peep-proof film projects, i.e., it will be from
The light that backlight module projects is configured to peep-proof light.
It therefore, can be by backlight module relatively conventional in the market and peep-proof film in the production process of display device
The effect for projecting peep-proof light can be realized, convenient for the volume production of display device.
The embodiment of the present invention also provides a kind of display methods, is applied to display device as described above, as shown in figure 8, side
Method includes:
Step 801: receiving switching command；
Step 802: the control display switching module switches to first state, does not change the peep-proof backlight module and projects
Peep-proof light the direction of propagation；Alternatively, the control display switching module switches to the second state, change the peep-proof backlight
The direction of propagation for the peep-proof light that mould group projects, so that the normal of the peep-proof light and the light-emitting surface of the display switching module
Between angle be greater than the predetermined angle.
In technical solution provided by the invention, when the display switching module in the first state when, do not change described anti-
Peep the direction of propagation of the peep-proof light of backlight module injection；When the display switching module in the second condition when, described in change
The direction of propagation for the peep-proof light that peep-proof backlight module projects, so that the light out of the peep-proof light and the display switching module
Angle between the normal in face is greater than the predetermined angle.As a result, by control display switching module in first state and second
Switch between state, so that display device be made to switch between peep-proof function and display picture are shared.
Above-mentioned display switching module can be attached on the light-emitting surface of peep-proof backlight module, can also be with peep-proof backlight module
Light-emitting surface interval setting, the light-emitting surface of display device be display switching module light-emitting surface.
In the second state, the peep-proof light that can be projected to peep-proof backlight module is scattered above-mentioned display switching module
Processing, to increase the angle of divergence of peep-proof light, so that the angle of divergence of the light projected from the light-emitting surface of display switching module is big
In the angle of divergence of peep-proof light.
Above-mentioned predetermined angle can be 30 °, the i.e. normal of the peep-proof light and the light-emitting surface of the injection of peep-proof backlight module
Between angle be less than predetermined angle.Certainly, predetermined angle is also possible to 25 °, 33 ° or 35 ° etc., different peep-proof backlight moulds
Group can correspond to different predetermined angles.
Further, the display switching module includes:
First electrode, second electrode and the liquid crystal layer between the first electrode and the second electrode, the liquid
Liquid crystal in crystal layer can deflect under the electric field action of the first electrode and the second electrode；
The second electrode correspond to a sub-pixel open area in be provided with multiple strip shaped electric poles, the multiple strip
Electrode includes the first strip shaped electric poles in the first plane and the second strip shaped electric poles in the second plane, wherein described
First plane is different from second plane.
Wherein, the control display switching module described in step 802 switches to first state, does not change the peep-proof back
The step of direction of propagation for the peep-proof light that optical mode group projects, comprising:
Identical driving voltage is inputted to first strip shaped electric poles and second strip shaped electric poles, controls liquid crystal described
Evenly distributed in liquid crystal layer, the liquid crystal in the liquid crystal layer does not change the propagation for the peep-proof light that the peep-proof backlight module projects
Direction.
As shown in figure 3, need can be from display device by liquid crystal layer for the peep-proof light that projects of peep-proof backlight module
Light-emitting surface projects, wherein the different deflection angles and arrangement mode of the liquid crystal in liquid crystal layer can be to the propagation sides of peep-proof light
To impacting.
By controlling the electric field formed by first electrode and second electrode, so as to control deflection angle and the row of liquid crystal
Column mode realizes that display switching module switches between the first state and a second state.
When needing display switching module switching to first state, inputted to the first strip shaped electric poles and the second strip shaped electric poles
Identical driving voltage V0, and to first electrode input driving voltage V1 (V1 ≠ V0) when, between second electrode and first electrode
It is capable of forming vertical electric field, as shown in Figure 4.So that liquid crystal in liquid crystal layer in evenly distributed, will not change from peep-proof backlight mould
The direction of propagation for the peep-proof light that group projects, i.e., will not change the angle of divergence of peep-proof light.
In addition, the control display switching module described in step 802 switches to the second state, change the peep-proof backlight
The direction of propagation for the peep-proof light that mould group projects, so that the normal of the peep-proof light and the light-emitting surface of the display switching module
Between angle be greater than the predetermined angle the step of, comprising:
Different driving voltages is inputted to first strip shaped electric poles and second strip shaped electric poles, controls liquid crystal described
Domes are formed in liquid crystal layer, the liquid crystal in the liquid crystal layer dissipates the biography for the peep-proof light that the peep-proof backlight module projects
Direction is broadcast, so that the angle between the peep-proof light and the normal of the light-emitting surface of the display switching module is greater than described preset
Angle.
By inputting driving voltage V2 to the first strip shaped electric poles, inputting driving voltage to the second strip shaped electric poles and first electrode
V0, wherein V2 is greater than V0, and the liquid crystal in liquid crystal layer can form arch grating (as shown in Figure 5), penetrate to from peep-proof backlight module
Peep-proof light out is dissipated.Wherein, the radian of the bigger domes of the voltage value of V2 is also bigger.
Unless otherwise defined, the technical term or scientific term that the disclosure uses should be tool in fields of the present invention
The ordinary meaning for thering is the personage of general technical ability to be understood." first ", " second " used in the disclosure and similar word are simultaneously
Any sequence, quantity or importance are not indicated, and are used only to distinguish different component parts." comprising " or "comprising" etc.
Similar word means that the element or object before the word occur covers the element or object for appearing in the word presented hereinafter
And its it is equivalent, and it is not excluded for other elements or object.The similar word such as " connection " or " connected " is not limited to physics
Or mechanical connection, but may include electrical connection, it is either direct or indirectly."upper", "lower",
"left", "right" etc. is only used for indicating relative positional relationship, and after the absolute position for being described object changes, then the relative position is closed
System may also correspondingly change.
It is appreciated that ought such as layer, film, region or substrate etc element be referred to as be located at another element "above" or "below"
When, which " direct " can be located at "above" or "below" another element, or may exist intermediary element.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form belongs within protection of the invention.
Claims (10)
1. a kind of display device characterized by comprising
Peep-proof backlight module, for projecting peep-proof light, the peep-proof light and institute from the light-emitting surface of the peep-proof backlight module
The angle stated between the normal of light-emitting surface is less than predetermined angle；
Show that switching module, the display switching module are set to the light emission side of the peep-proof backlight module, the display switching
Mould group can switch between the first state and a second state, when the display switching module in the first state when, do not change
The direction of propagation for the peep-proof light that the peep-proof backlight module projects；When the display switching module in the second condition when, change
Become the direction of propagation for the peep-proof light that the peep-proof backlight module projects, so that the peep-proof light and the display switching module
Light-emitting surface normal between angle be greater than the predetermined angle.
2. display device according to claim 1, which is characterized in that the display switching module includes:
First electrode, second electrode and the liquid crystal layer between the first electrode and the second electrode, the liquid crystal layer
In liquid crystal can be deflected under the electric field action of the first electrode and the second electrode；
The second electrode correspond to a sub-pixel open area in be provided with multiple strip shaped electric poles, the multiple strip shaped electric poles
Including the first strip shaped electric poles in the first plane and the second strip shaped electric poles in the second plane, wherein described first
Plane is different from second plane.
3. display device according to claim 2, which is characterized in that first strip shaped electric poles and second strip electricity
Pole is arranged alternately, the orthographic projection of the gap between first strip shaped electric poles on the first electrode and second strip electricity
The orthographic projection of pole on the first electrode is overlapped.
4. display device according to claim 2 or 3, which is characterized in that it is flat that first plane is parallel to described second
Face, first strip shaped electric poles and second strip shaped electric poles are spaced apart by insulating layer.
5. display device according to claim 2, which is characterized in that the display switching module further include:
First alignment layer between the first electrode and the liquid crystal layer；
Second orientation layer between the second electrode and the liquid crystal layer；
The differently- oriented directivity of the first alignment layer is vertical with the differently- oriented directivity of the second orientation layer.
6. display device according to claim 2, which is characterized in that the display switching module further include:
Positioned at the first electrode away from the first polarizing film of the side of the liquid crystal layer；
Positioned at the second electrode away from the second polarizing film of the side of the liquid crystal layer；
The light transmission axis direction of first polarizing film is vertical with the light transmission axis direction of second polarizing film.
7. display device according to claim 1, which is characterized in that the peep-proof backlight module includes:
Backlight module；
Peep-proof film, the peep-proof film be set on the light-emitting surface of the backlight module, for will project from the backlight module
Light is configured to the peep-proof light.
8. a kind of display methods, which is characterized in that be applied to such as display device of any of claims 1-7, method
Include:
Receive switching command；
It controls the display switching module and switches to first state, do not change the peep-proof light that the peep-proof backlight module projects
The direction of propagation；Alternatively, the control display switching module switches to the second state, change the anti-of the peep-proof backlight module injection
The direction of propagation of light is peeped, so that the angle between the peep-proof light and the normal of the light-emitting surface of the display switching module is big
In the predetermined angle.
9. display methods according to claim 8, which is characterized in that it is applied to display device as claimed in claim 2,
The control display switching module switches to first state, does not change the peep-proof light that the peep-proof backlight module projects
The step of direction of propagation of line, comprising:
Identical driving voltage is inputted to first strip shaped electric poles and second strip shaped electric poles, controls liquid crystal in the liquid crystal
Evenly distributed in layer, the liquid crystal in the liquid crystal layer does not change the propagation side for the peep-proof light that the peep-proof backlight module projects
To.
10. display methods according to claim 8, which is characterized in that be applied to display dress as claimed in claim 2
It sets,
The control display switching module switches to the second state, changes the peep-proof light that the peep-proof backlight module projects
The direction of propagation so that the angle between the peep-proof light and the normal of the light-emitting surface of the display switching module be greater than it is described
The step of predetermined angle, comprising:
Different driving voltages is inputted to first strip shaped electric poles and second strip shaped electric poles, controls liquid crystal in the liquid crystal
Domes are formed in layer, the liquid crystal in the liquid crystal layer dissipates the propagation side for the peep-proof light that the peep-proof backlight module projects
To so that the angle between the peep-proof light and the normal of the light-emitting surface of the display switching module is greater than the preset angle
Degree.
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| CN201811250296.7A CN109143635A (en) | 2018-10-25 | 2018-10-25 | Display device and display methods |
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| CN110244478A (en) * | 2019-06-17 | 2019-09-17 | 京东方科技集团股份有限公司 | Display direction control panel and control method, display device |
| CN110412809A (en) * | 2019-08-01 | 2019-11-05 | 京东方科技集团股份有限公司 | A kind of peep-proof device, display device and anti-peeping method |
| CN111158188A (en) * | 2020-01-03 | 2020-05-15 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN111208666A (en) * | 2020-03-09 | 2020-05-29 | 福州京东方光电科技有限公司 | Display device |
| CN112859445A (en) * | 2021-02-23 | 2021-05-28 | 京东方科技集团股份有限公司 | Display device |
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Application publication date: 20190104 |