CN108363250A - A kind of display panel, display module, display device and its anti-peeping method - Google Patents
A kind of display panel, display module, display device and its anti-peeping method Download PDFInfo
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- CN108363250A CN108363250A CN201810241858.5A CN201810241858A CN108363250A CN 108363250 A CN108363250 A CN 108363250A CN 201810241858 A CN201810241858 A CN 201810241858A CN 108363250 A CN108363250 A CN 108363250A
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- liquid crystal
- peep
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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
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—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
- G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
Abstract
A kind of display panel of offer of the embodiment of the present invention, display module, display device and its anti-peeping method, are related to display technology field, and compared to the prior art, preparation process is simple, and save cost.A kind of display panel, including：Display liquid crystal cell, the peep-proof liquid crystal cell that the direction of side is set gradually are shown towards display panel；Show liquid crystal cell, including：First liquid crystal layer, multigroup pixel electrode and public electrode for driving the first liquid crystal layer to deflect, pixel electrode and public electrode are located at the same side of the first liquid crystal layer；Multigroup pixel electrode and public electrode are for inputting the corresponding first voltage of image to be displayed；Peep-proof liquid crystal cell, including：Second liquid crystal layer, first electrode and second electrode for driving the second liquid crystal layer to deflect, first electrode and the second electrode are located at the opposite sides of the second liquid crystal layer；The second voltage of first electrode and second electrode input, for making peep-proof liquid crystal cell switch between non-peep-proof state and peep-proof state.
Description
Technical field
The present invention relates to display technology field more particularly to a kind of display panel, display module, display device and its peep-proofs
Method.
Background technology
With the development of network technology, more and more people do shopping on network or the operations such as account trading,
During aforesaid operations carry out, operator is frequently necessary to show equipment in computer, mobile phone, ATM, automatic ticket taking machine etc.
Upper input personal information, to easily cause leakage of personal information.Therefore, show the anti-peeping performance of equipment by increasingly
Extensive concern.
With the gradual maturation of liquid crystal display (Liquid Crystal Display, abbreviation LCD) the relevant technologies, emerge in large numbers
Go out more and more new products, such as peep-proof product.
Currently, common peep-proof product includes display device and glasses, wherein array substrate side is arranged in display device
The eyeglass of polaroid, glasses includes polaroid corresponding with the polaroid of array substrate side in display device.User puts on eye
When mirror, it can be seen that the picture shown in display device, and operated accordingly；When the non-wearing spectacles of user, it can only see aobvious
White picture on showing device, to realize peep-proof.
However, this peep-proof product and having to rely on glasses corresponding with display device, cost is higher.
Invention content
A kind of display panel of the embodiment of the present invention offer, display module, display device and its anti-peeping method, compared to existing
There is technology, preparation process is simple, and saves cost.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that：
In a first aspect, a kind of display panel is provided, including：Show what the direction of side was set gradually towards the display panel
Show liquid crystal cell, peep-proof liquid crystal cell；The display liquid crystal cell, including：It is first liquid crystal layer, multigroup for driving first liquid crystal
The pixel electrode and public electrode of layer deflection, the pixel electrode and the public electrode are located at the same of first liquid crystal layer
Side；Multigroup pixel electrode and the public electrode are for inputting the corresponding first voltage of image to be displayed；The peep-proof liquid
Brilliant box, including：Second liquid crystal layer, first electrode and second electrode for driving the second liquid crystal layer deflection, described first
Electrode and the second electrode are located at the opposite sides of second liquid crystal layer；The first electrode and second electrode input
Second voltage, for making the peep-proof liquid crystal cell switch between non-peep-proof state and peep-proof state.
Preferably, the display liquid crystal cell further includes the first base for the pixel electrode and the public electrode to be arranged
Plate and the second substrate opposite with the first substrate；The first substrate further includes first alignment layer, the second substrate
Including second orientation layer；The first alignment layer is identical as the differently- oriented directivity of second orientation layer.
Preferably, the peep-proof liquid crystal cell further includes third substrate for the first electrode to be arranged and for setting
Set the tetrabasal of the second electrode；The third substrate further includes third oriented layer, and the tetrabasal further includes the 4th
Oriented layer；The differently- oriented directivity of the third oriented layer and the 4th oriented layer is mutually perpendicular to；Alternatively, the third oriented layer with
The differently- oriented directivity of 4th oriented layer is identical.
Preferably, the display liquid crystal cell is ADS liquid crystal cells or IPS liquid crystal cells；In the third oriented layer and described the
In the case that the differently- oriented directivity of four oriented layer is mutually perpendicular to, the peep-proof liquid crystal cell is TN liquid crystal cells；In the third oriented layer
In the case of identical with the differently- oriented directivity of the 4th oriented layer, the peep-proof liquid crystal cell is VA liquid crystal cells.
Preferably, the second substrate is shared with the third substrate.
Preferably, further include color film layer, the coloured silk film layer is set in the display liquid crystal cell or the color film layer setting
In the peep-proof liquid crystal cell.
Second aspect, provides a kind of display module, including display panel described in first aspect and the first polaroid and
Second polaroid；First polaroid is set to side of first liquid crystal layer far from the second liquid crystal layer, second polaroid
It is set to side of second liquid crystal layer far from first liquid crystal layer.
Preferably, the polarizing axis perpendicular quadrature of first polaroid and second polaroid；Alternatively, described first is inclined
Mating plate is parallel with the polarizing axis of the second polaroid.
The third aspect provides a kind of display device, including the display module described in second aspect.
Fourth aspect provides the anti-peeping method of the display device as described in the third aspect, including：Show the pixel of liquid crystal cell
Electrode and the corresponding first voltage of public electrode input image to be displayed；The first electrode and second electrode of peep-proof liquid crystal cell input
Second voltage so that the peep-proof liquid crystal cell switches between non-peep-proof state and peep-proof state.
A kind of display panel of offer of the embodiment of the present invention, display module, display device and its anti-peeping method, the display surface
Plate includes display liquid crystal cell and peep-proof liquid crystal cell, shows that the multigroup pixel electrode and public electrode in liquid crystal cell input figure to be shown
As corresponding first voltage, so that display panel shows image to be displayed, when the display panel integrally shows white state, use
Family can see the display image shown by the display panel.First electrode and the second electrode input second of peep-proof liquid crystal cell
Voltage, to drive the deflection of the second liquid crystal layer, when the polarization of the polarization direction of the light projected from peep-proof liquid crystal cell and the second polaroid
When direction is identical, if liquid crystal molecule is vertical " standing " (that is, the long axis and tetrabasal of liquid crystal molecule hang down in the second liquid crystal layer
Directly) state, then liquid crystal molecule during user is by the second liquid crystal layer in the light for the display image that the display panel front is watched
Long axis reflect and project, user is by the second liquid crystal layer in the light for the display image that the display panel side is watched
The short axle of liquid crystal molecule is reflected and is projected, at this point, compared to the light that the short axle by liquid crystal molecule is reflected and projected, from liquid crystal
The brightness bigger of light that the long axis of molecule is reflected and projected, so, user can normally watch in the display panel front
Display image that the display panel is shown, the display image seen in the display panel side is smudgy, to realize
Peep-proof function；When the polarization direction of the light projected from peep-proof liquid crystal cell is identical as the polarization direction of the second polaroid, if second
Liquid crystal molecule is horizontal " recumbency " (that is, the long axis of liquid crystal molecule is parallel with tetrabasal) state in liquid crystal layer, then user is in institute
The light for stating the display image of display panel front viewing is reflected and is projected by the short axle of liquid crystal molecule in the second liquid crystal layer,
The long axis refraction of liquid crystal molecule during user is by the second liquid crystal layer in the light for the display image that the display panel side is watched
And project, at this point, the luminance difference very little of the light projected from the long axis and short axle of liquid crystal molecule, so, user is described
Display panel a front surface and a side surface can normally watch the display image that the display panel is shown, to realize non-peep-proof function.
Compared to the prior art, preparation process is simple, and saves cost.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of structural schematic diagram of peep-proof display module provided in an embodiment of the present invention.
Reference numeral：
10- shows liquid crystal cell；11- first substrates；12- public electrodes；13- pixel electrodes；14- first alignment layers；15-
One liquid crystal layer；16- second orientation layers；17- second substrates；20- peep-proof liquid crystal cells；21- third substrates；22- first electrodes；23-
Third oriented layer；The second liquid crystal layers of 24-；The 4th oriented layer of 25-；26- second electrodes；27- tetrabasals；The first polaroids of 31-；
The second polaroids of 32-.
Specific implementation mode
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 describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of display panel, as shown in Figure 1, including：Side is shown towards the display panel
Display liquid crystal cell 10 that direction is set gradually, peep-proof liquid crystal cell 20；Show liquid crystal cell 10, including：First liquid crystal layer 15, Duo Zuyong
In the pixel electrode 13 and public electrode 12 that drive the deflection of the first liquid crystal layer 15, pixel electrode 13 and public electrode 12 are located at first
The same side of liquid crystal layer 15；Multigroup pixel electrode 13 and public electrode 12 are for inputting the corresponding first voltage of image to be displayed；
Peep-proof liquid crystal cell 20, including：Second liquid crystal layer 24, first electrode 22 and second electrode for driving the second liquid crystal layer 24 to deflect
26, first electrode 22 and second electrode 26 are located at the opposite side of the second liquid crystal layer 24；First electrode 22 and second electrode 26 input
Second voltage, for making peep-proof liquid crystal cell 20 switch between non-peep-proof state and peep-proof state.
In addition, display liquid crystal cell 10 further include for be arranged the first substrate 11 of pixel electrode 13 and public electrode 12, with
And the second substrate 17 opposite with the first substrate 11, first substrate 11 further include first alignment layer 14, second substrate 17 wraps
Include second orientation layer 16；First alignment layer 14 is identical as the differently- oriented directivity of second orientation layer 16.Peep-proof liquid crystal cell 20 further includes using
Third substrate 21 in setting first electrode 22 and tetrabasal 27 for second electrode 26 to be arranged；Third substrate 21 is also
Including third oriented layer 23, tetrabasal 27 further includes the 4th oriented layer 25；Third oriented layer 23 takes with the 4th oriented layer 25
It is mutually perpendicular to direction；Alternatively, third oriented layer 23 is identical as the differently- oriented directivity of the 4th oriented layer 25.
Wherein, the second substrate 17 of display liquid crystal cell 10 can be shared with the third substrate 21 of peep-proof liquid crystal cell 20, with drop
The thickness of the low display panel is conducive to the slimming design of the display panel；Certainly, the second base of liquid crystal cell 10 is shown
Plate 17 and the third substrate 21 of peep-proof liquid crystal cell 20 can also be two individual substrates, and this is not limited by the present invention.
The display panel further includes color film layer (not shown), and display liquid crystal cell 10 can be arranged in the coloured silk film layer
In, it can also be arranged in peep-proof liquid crystal cell 20.When the color film layer is arranged when showing in liquid crystal cell 10, the coloured silk film layer can
To be arranged in first substrate 11 close to the side of second substrate 17, can also be arranged in second substrate 17 close to first substrate 11
Side；When the color film layer is arranged in peep-proof liquid crystal cell 20, the coloured silk film layer can be arranged in third substrate 21 close to the
The side of tetrabasal 27 can also be arranged in tetrabasal 27 close to the side of third substrate 21.
It should be noted that first, display liquid crystal cell 10 includes multiple subpixel areas, wherein in display liquid crystal cell 10
Each group for drive the first liquid crystal layer 15 deflection pixel electrode 13 and public electrode 12 both correspond to a sub-pixel area
Domain.
Second, " multigroup pixel electrode 13 and public electrode 12 are for inputting the corresponding first voltage of image to be displayed " is
Refer to：The first voltage that multigroup pixel electrode 13 and public electrode 12 input can make display panel show image to be displayed.Work as institute
When stating display panel and integrally showing white state, user can see the display image shown by the display panel；When the display
When panel integrally shows black state, the picture that user sees is black picture.
Herein, it can be inputted by the pixel electrode 13 and public electrode 12 of display liquid crystal cell 10 corresponding with image to be displayed
First voltage, can also be by the first electrode of the pixel electrode 13 and public electrode 12 and peep-proof liquid crystal cell 20 of display liquid crystal cell 10
22 and corresponding with the image to be displayed voltage of input jointly of second electrode 26.
Third, not to showing that the type of liquid crystal cell 10 is defined, as long as the pixel electrode 13 and public affairs of display liquid crystal cell 10
Common electrode 12 is located at the same side of the first liquid crystal layer 15.For example, display liquid crystal cell 10 can be advanced super dimension field switch
(ADvanced Super Dimension Switch, abbreviation ADS) type liquid crystal cell or plane conversion (In Plane
Switch, abbreviation IPS) type liquid crystal cell.
The type of peep-proof liquid crystal cell 20 is not defined, as long as the first electrode 22 and second electrode of peep-proof liquid crystal cell 20
26 are located at the opposite sides of the second liquid crystal layer 24.For example, peep-proof liquid crystal cell 20 can be twisted-nematic (Twisted
Nematic, abbreviation TN) type liquid crystal cell or vertical orientation (Vertical Alignment, abbreviation VA) type liquid crystal cell.
Herein, when in peep-proof liquid crystal cell 20 third oriented layer 23 and the differently- oriented directivity of the 4th oriented layer 25 be mutually perpendicular to
When, peep-proof liquid crystal cell 20 for example can be TN type liquid crystal cells；When the third oriented layer 23 and the 4th in peep-proof liquid crystal cell 20 is orientated
When the differently- oriented directivity of layer 25 is identical, peep-proof liquid crystal cell 20 for example can be VA type liquid crystal cells.
4th, show liquid crystal cell 10 in pixel electrode 13 can be arranged with same layer with public electrode 12, can also different layer set
It sets and is separated by insulating layer.Wherein, when pixel electrode 13 and 12 same layer of public electrode are arranged, pixel electrode 13 and common electrical
Pole 12 is the strip structure of mutually insulated；When pixel electrode 13 and 12 different layer of public electrode are arranged, pixel electrode 13 be strip,
Public electrode 12 is plate, and pixel electrode 13 can be set to public electrode 12 close to the side of peep-proof liquid crystal cell 20, can also
It is set to side of the public electrode 12 far from peep-proof liquid crystal cell 20.Fig. 1 only shows that pixel electrode 13 is set to public electrode 12 and leans on
The side of nearly peep-proof liquid crystal cell 20.
Herein, when pixel electrode 13 and 12 same layer of public electrode are arranged, display liquid crystal cell 10 for example can be IPS type liquid
Brilliant box；When pixel electrode 13 and 12 different layer of public electrode are arranged, display liquid crystal cell 10 for example can be ADS type liquid crystal cells.
5th, it will be apparent to one skilled in the art that a polaroid can be respectively set in the opposite sides of display panel, tie
The deflection for closing the liquid crystal in display panel, to determine whether the light into display panel can project from display panel for showing
Show, that is, determine that display panel shows black state or white state.In the embodiment of the present invention, when display panel applications are in display module, institute
It includes the display panel, the first polaroid 31 and the second polaroid 32 to state display module.Wherein, the first polaroid 31 is set
It is placed in side of first liquid crystal layer 15 far from the second liquid crystal layer 24, the second polaroid 32 is set to the second liquid crystal layer 24 far from first
The side of liquid crystal layer 15.
Exemplary, the first polaroid 31 can be arranged in side of the first substrate 11 far from second substrate 17；Second polarisation
Piece 32 can be arranged in side of the tetrabasal 27 far from third substrate 21.Certainly, if the first polaroid 31 and the second polaroid
32 be wire grating polaroid, then the first polaroid 31 can also be arranged between first substrate 11 and the first liquid crystal layer 15, the
Two polaroids 32 can also be arranged between tetrabasal 27 and the second liquid crystal layer 24.
6th, the polarizing axis perpendicular quadrature of the first polaroid 31 and the second polaroid 32；Alternatively, the first polaroid 31 and
The polarizing axis of two polaroids 32 is parallel.
7th, since polaroid not being arranged between the display liquid crystal cell 10 and peep-proof liquid crystal cell 20 of the display panel, because
This, injects and shows that the light of liquid crystal cell 10 can be injected in peep-proof liquid crystal cell 20.
The embodiment of the present invention provides a kind of display panel, including display liquid crystal cell 10 and peep-proof liquid crystal cell 20, shows liquid crystal
The first voltage corresponding with the input image to be displayed of public electrode 12 of multigroup pixel electrode 13 in box 10, so that display panel
Show image to be displayed, when the display panel integrally shows white state, user can see shown by the display panel
Show image.The first electrode 22 and second electrode 26 of peep-proof liquid crystal cell 20 input second voltage, to drive the second liquid crystal layer 24
Deflection, when the polarization direction of the light projected from peep-proof liquid crystal cell 20 is identical as the polarization direction of the second polaroid 32, if second
Liquid crystal molecule is vertical " standing " (that is, the long axis of liquid crystal molecule is vertical with tetrabasal) state in liquid crystal layer 24, then user exists
The light of the display image of the display panel front viewing is reflected and is penetrated by the long axis of liquid crystal molecule in the second liquid crystal layer 24
Go out, liquid crystal molecule is short during user is by the second liquid crystal layer 24 in the light for the display image that the display panel side is watched
Axis is reflected and is projected, at this point, compared to the light that the short axle by liquid crystal molecule reflect and projected, from the long axis of liquid crystal molecule folding
The brightness bigger of light penetrated and projected, so, user can normally watch the display panel in the display panel front
The display image of display, the display image seen in the display panel side is smudgy, to realize peep-proof function；When from
When the polarization direction for the light that peep-proof liquid crystal cell 20 projects is identical as the polarization direction of the second polaroid 32, if in the second liquid crystal layer 24
Liquid crystal molecule is horizontal " recumbency " (that is, the long axis of liquid crystal molecule is parallel with tetrabasal) state, then user is in the display surface
The light of the display image of plate front viewing is reflected and is projected, Yong Hu by the short axle of liquid crystal molecule in the second liquid crystal layer 24
The light of the display image of the display panel side viewing is reflected and is penetrated by the long axis of liquid crystal molecule in the second liquid crystal layer 24
Go out, at this point, the luminance difference very little of the light projected from the long axis and short axle of liquid crystal molecule, so, user is in the display
Panel front and side can normally watch the display image that the display panel is shown, to realize non-peep-proof function.It compares
In the prior art, preparation process is simple, and saves cost.
Herein, when realizing peep-proof function, " compared to the light that the short axle by liquid crystal molecule is reflected and projected, from liquid crystal
The brightness bigger of light that the long axis of molecule is reflected and projected ", be because：In the length for the slave liquid crystal molecule that display panel front is seen
The polarization state for the light that axis projects is identical as the polarization state of the second polaroid 32, and therefore, the light reflected by long axis of liquid crystal molecule can
All projected from the second polaroid 32；And the polarization state for the light that the slave liquid crystal molecule short axle seen in display panel side projects with
The polarization state of second polaroid 32 is different, also, Δ n (specific refractivity of long axis of liquid crystal molecule and short axle) at this time is minimum,
Thickness d in the second liquid crystal layer 24 is identical, and Δ nd is minimum, and those skilled in the art both knows about, display panel
Transmitance is with Δ nd at SIN function relationship, and therefore, in the case of Δ nd minimums, the transmitance of display panel is minimum, so
Only a small part light projects.
When realizing non-peep-proof function, and " from the long axis and short axle of liquid crystal molecule project light luminance difference very little ", be because
For：In the polarization state of the polarization state and the second polaroid 32 of the light that the short axle for the slave liquid crystal molecule that display panel front is seen projects
Identical, therefore, the light by the refraction of liquid crystal molecule short axle can be projected all from the second polaroid 32；Although in display panel side
The polarization state for the light that the slave long axis of liquid crystal molecule seen projects is different from the polarization state of the second polaroid 32, but Δ n at this time
Maximum, the thickness d in the second liquid crystal layer 24 is identical, and Δ nd is maximum, and the transmitance of display panel is also maximum, so from
The brightness for the light that display panel side is seen is also very big.
Specifically, when display liquid crystal cell 10, peep-proof liquid crystal cell 20 use different types of liquid crystal cell and the first polaroid 31
When different with the polarizing axis relationship of the second polaroid 32, display panel realizes that the detailed process of peep-proof and non-peep-proof also differs.
It is exemplary, following several situations can be divided into：
The first situation, the polarizing axis perpendicular quadrature of the first polaroid 31 and the second polaroid 32, display liquid crystal cell 10 are
ADS types liquid crystal cell, peep-proof liquid crystal cell 20 are TN type liquid crystal cells, when the value of first voltage is 0, inject the light for showing liquid crystal cell 10
Polarization state do not change；Later, the light projected from display liquid crystal cell 10 injects peep-proof liquid crystal cell 20, is 0 in second voltage
When, the middle liquid crystal molecule of the second liquid crystal 24 is the state of horizontal " recumbency ", and the polarization state for injecting the light of peep-proof liquid crystal cell 20 occurs
Change, the polarization direction of the light projected from peep-proof liquid crystal cell 20 is identical as the polarization direction of the second polaroid 32, and light can be from peep-proof
Liquid crystal cell 20 projects and shows image, since the middle liquid crystal molecule of the second liquid crystal 24 in peep-proof liquid crystal cell 20 is horizontal " recumbency "
State, therefore, it can be achieved that non-peep-proof function.
Herein, for showing liquid crystal cell 10, pixel electrode 13 and public electrode 12 input first voltage, due to pixel electrode
13 and public electrode 12 input first voltage it is corresponding with image to be displayed, therefore, pixel electrode 13 and public electrode 12 can carry
For inputting the signal of image to be displayed.If pixel electrode 13 is identical as the potential of public electrode 12, the value of first voltage is 0,
Pixel electrode 13 and public electrode 12 cannot drive the first liquid crystal layer 15 to deflect, and then inject the polarization for the light for showing liquid crystal cell 10
State does not change；If pixel electrode 13 and the potential of public electrode 12 differ, the value of first voltage is not 0, pixel electricity
Pole 13 and public electrode 12 can drive the first liquid crystal layer 15 to deflect, and then inject and show that the polarization state of the light of liquid crystal cell 10 changes
Become.
For peep-proof liquid crystal cell 20, first electrode 22 and second electrode 26 input second voltage, at this point, second voltage can be with
It is corresponding with image to be displayed, it can not also be corresponding with image to be displayed.Exemplary, second voltage is not corresponding with image to be displayed,
First electrode 22 and second electrode 26 are not required to provide the signal of image to be displayed, if the potential of first electrode 22 and second electrode 26
Identical, then the value of second voltage is 0；If first electrode 22 and the potential of second electrode 26 differ, the value of second voltage is not
It is 0.
It is the working method of display liquid crystal cell 10 and peep-proof liquid crystal cell 20 above, repeats no more hereinafter.
The second situation, the polarizing axis perpendicular quadrature of the first polaroid 31 and the second polaroid 32, display liquid crystal cell 10 are
ADS types liquid crystal cell, peep-proof liquid crystal cell 20 are TN type liquid crystal cells, when the value of first voltage is not 0, injects and show liquid crystal cell 10
The polarization state of light changes；Later, the light projected from display liquid crystal cell 10 injects peep-proof liquid crystal cell 20, is not in second voltage
When 0, the middle liquid crystal molecule of the second liquid crystal 24 is the state of vertical " standing ", and the polarization state for injecting the light of peep-proof liquid crystal cell 20 is not sent out
Raw to change, the polarization direction of the light projected from peep-proof liquid crystal cell 20 is identical with the polarization direction of the second polaroid 32, and light can be from preventing
It peeps liquid crystal cell 20 and projects and show image, since the middle liquid crystal molecule of the second liquid crystal 24 in peep-proof liquid crystal cell 20 is vertical " standing "
State, therefore, it can be achieved that peep-proof function.
The third situation, the polarizing axis perpendicular quadrature of the first polaroid 31 and the second polaroid 32, display liquid crystal cell 10 are
ADS types liquid crystal cell, peep-proof liquid crystal cell 20 are VA type liquid crystal cells, when the value of first voltage is 0, inject the light for showing liquid crystal cell 10
Polarization state do not change；Later, the light projected from display liquid crystal cell 10 injects peep-proof liquid crystal cell 20, is not in second voltage
When 0, the middle liquid crystal molecule of the second liquid crystal 24 is the state of horizontal " recumbency ", and the polarization state for injecting the light of peep-proof liquid crystal cell 20 occurs
Change, the polarization direction of the light projected from peep-proof liquid crystal cell 20 is identical as the polarization direction of the second polaroid 32, and light can be from peep-proof
Liquid crystal cell 20 projects and shows image, since the middle liquid crystal molecule of the second liquid crystal 24 in peep-proof liquid crystal cell 20 is horizontal " recumbency "
State, therefore, it can be achieved that non-peep-proof function.
4th kind of situation, the polarizing axis perpendicular quadrature of the first polaroid 31 and the second polaroid 32, display liquid crystal cell 10 are
ADS types liquid crystal cell, peep-proof liquid crystal cell 20 are VA type liquid crystal cells, when the value of first voltage is not 0, injects and show liquid crystal cell 10
The polarization state of light changes；Later, the light projected from display liquid crystal cell 10 injects peep-proof liquid crystal cell 20, is 0 in second voltage
When, the middle liquid crystal molecule of the second liquid crystal 24 is the state of vertical " standing ", and the polarization state for injecting the light of peep-proof liquid crystal cell 20 is not sent out
Raw to change, the polarization direction of the light projected from peep-proof liquid crystal cell 20 is identical with the polarization direction of the second polaroid 32, and light can be from preventing
It peeps liquid crystal cell 20 and projects and show image, since the middle liquid crystal molecule of the second liquid crystal 24 in peep-proof liquid crystal cell 20 is vertical " standing "
State, therefore, it can be achieved that peep-proof function.
5th kind of situation, the first polaroid 31 is parallel with the polarizing axis of the second polaroid 32, and display liquid crystal cell 10 is ADS types
Liquid crystal cell, peep-proof liquid crystal cell 20 are TN type liquid crystal cells, when the value of first voltage is not 0, inject the light for showing liquid crystal cell 10
Polarization state changes；Later, the light projected from display liquid crystal cell 10 injects peep-proof liquid crystal cell 20, when second voltage is 0, the
The middle liquid crystal molecule of two liquid crystal 24 is the state of horizontal " recumbency ", and the polarization state for injecting the light of peep-proof liquid crystal cell 20 changes,
The polarization direction of the light projected from peep-proof liquid crystal cell 20 is identical as the polarization direction of the second polaroid 32, and light can be from peep-proof liquid crystal cell
20 project and simultaneously show image, due to the state that the middle liquid crystal molecule of the second liquid crystal 24 in peep-proof liquid crystal cell 20 is horizontal " recumbency ",
Therefore, it can be achieved that non-peep-proof function.
6th kind of situation, the first polaroid 31 is parallel with the polarizing axis of the second polaroid 32, and display liquid crystal cell 10 is ADS types
Liquid crystal cell, peep-proof liquid crystal cell 20 are TN type liquid crystal cells, when the value of first voltage is 0, inject the inclined of the light for showing liquid crystal cell 10
Polarization state does not change；Later, the light projected from display liquid crystal cell 10 injects peep-proof liquid crystal cell 20, when second voltage is not 0,
The middle liquid crystal molecule of second liquid crystal 24 is the state of vertical " standing ", and the polarization state for injecting the light of peep-proof liquid crystal cell 20 does not change
Become, the polarization direction of the light projected from peep-proof liquid crystal cell 20 is identical as the polarization direction of the second polaroid 32, and light can be from peep-proof liquid
Brilliant box 20 projects and shows image, due to the shape that the middle liquid crystal molecule of the second liquid crystal 24 in peep-proof liquid crystal cell 20 is vertical " standing "
State, therefore, it can be achieved that peep-proof function.
7th kind of situation, the first polaroid 31 is parallel with the polarizing axis of the second polaroid 32, and display liquid crystal cell 10 is ADS types
Liquid crystal cell, peep-proof liquid crystal cell 20 are VA type liquid crystal cells, when the value of first voltage is 0, inject the inclined of the light for showing liquid crystal cell 10
Polarization state does not change；Later, the light projected from display liquid crystal cell 10 injects peep-proof liquid crystal cell 20, when second voltage is 0, the
The middle liquid crystal molecule of two liquid crystal 24 is the state of vertical " standing ", and the polarization state for injecting the light of peep-proof liquid crystal cell 20 does not change
Become, the polarization direction of the light projected from peep-proof liquid crystal cell 20 is identical as the polarization direction of the second polaroid 32, and light can be from peep-proof liquid
Brilliant box 20 projects and shows image, due to the shape that the middle liquid crystal molecule of the second liquid crystal 24 in peep-proof liquid crystal cell 20 is vertical " standing "
State, therefore, it can be achieved that peep-proof function.
8th kind of situation, the first polaroid 31 is parallel with the polarizing axis of the second polaroid 32, and display liquid crystal cell 10 is ADS types
Liquid crystal cell, peep-proof liquid crystal cell 20 are VA type liquid crystal cells, when the value of first voltage is not 0, inject the light for showing liquid crystal cell 10
Polarization state changes；Later, the light projected from display liquid crystal cell 10 injects peep-proof liquid crystal cell 20, when second voltage is not 0,
The middle liquid crystal molecule of second liquid crystal 24 is the state of horizontal " recumbency ", and the polarization state for injecting the light of peep-proof liquid crystal cell 20 changes
Become, the polarization direction of the light projected from peep-proof liquid crystal cell 20 is identical as the polarization direction of the second polaroid 32, and light can be from peep-proof liquid
Brilliant box 20 projects and shows image, due to the shape that the middle liquid crystal molecule of the second liquid crystal 24 in peep-proof liquid crystal cell 20 is horizontal " recumbency "
State, therefore, it can be achieved that non-peep-proof function.
Certainly, display liquid crystal cell 10 can also be IPS type liquid crystal cells, and details are not described herein.
The embodiment of the present invention provides a kind of display module, as shown in Figure 1, including the display surface described in aforementioned any embodiment
Plate and the first polaroid 31 and the second polaroid 32.
Wherein, the first polaroid 31 is set to side of first liquid crystal layer 15 far from the second liquid crystal layer 24, the second polaroid
32 are set to side of second liquid crystal layer 24 far from the first liquid crystal layer 15.
Exemplary, the first polaroid 31 can be arranged in side of the first substrate 11 far from second substrate 17；Second polarisation
Piece 32 can be arranged in side of the tetrabasal 27 far from third substrate 21.Certainly, if the first polaroid 31 and the second polaroid
32 be wire grating polaroid, then the first polaroid 31 can also be arranged between first substrate 11 and the first liquid crystal layer 15, the
Two polaroids 32 can also be arranged between tetrabasal 27 and the second liquid crystal layer 24.
It should be noted that the polarizing axis perpendicular quadrature of the first polaroid 31 and the second polaroid 32；Alternatively, the first polarisation
Piece 31 is parallel with the polarizing axis of the second polaroid 32.
The embodiment of the present invention provides a kind of display module, including the display panel, the first polaroid 31, the second polaroid
32, the display panel includes display liquid crystal cell 10 and peep-proof liquid crystal cell 20, shows multigroup pixel electrode 13 in liquid crystal cell 10
First voltage corresponding with the input image to be displayed of public electrode 12, so that display module shows image to be displayed, when described
When display module integrally shows white state, user can see the display image shown by the display module.Peep-proof liquid crystal cell 20
First electrode 22 and second electrode 26 input second voltage, to drive the deflection of the second liquid crystal layer 24, when from peep-proof liquid crystal cell 20
When the polarization direction of the light of injection is identical as the polarization direction of the second polaroid 32, if liquid crystal molecule is vertical in the second liquid crystal layer 24
It directly " stands " (that is, the long axis of liquid crystal molecule is vertical with tetrabasal) state, then user watches in the display module front
Show that the light of image is reflected and projected by the long axis of liquid crystal molecule in the second liquid crystal layer 24, user is in the display module
The light of the display image of side viewing is reflected and is projected by the short axle of liquid crystal molecule in the second liquid crystal layer 24, at this point, phase
Compared with the light that the short axle by liquid crystal molecule is reflected and projected, the brightness for the light for reflecting and projecting from the long axis of liquid crystal molecule is more
Greatly, so, user can normally watch the display image that the display module shows, described in the display module front
The display image that display module side is seen is smudgy, to realize peep-proof function；When the light projected from peep-proof liquid crystal cell 20
Polarization direction it is identical as the polarization direction of the second polaroid 32 when, if liquid crystal molecule is horizontal " recumbency " in the second liquid crystal layer 24
(that is, the long axis of liquid crystal molecule is parallel with tetrabasal) state, then the display image that user watches in the display module front
Light be to reflect and project by the short axle of liquid crystal molecule in the second liquid crystal layer 24, user watches in the display module side
The light of display image be to reflect and project by the long axis of liquid crystal molecule in the second liquid crystal layer 24, at this point, from liquid crystal molecule
Long axis and short axle project light luminance difference very little, so, user can be just in described display module a front surface and a side surface
The display image that the display module is shown often is watched, to realize non-peep-proof function.Compared to the prior art, preparation process letter
It is single, and save cost.
Herein, when realizing peep-proof function, " compared to the light that the short axle by liquid crystal molecule is reflected and projected, from liquid crystal
The brightness bigger of light that the long axis of molecule is reflected and projected ", be because：In the length for the slave liquid crystal molecule that display module front is seen
The polarization state for the light that axis projects is identical as the polarization state of the second polaroid 32, and therefore, the light reflected by long axis of liquid crystal molecule can
All projected from the second polaroid 32；And the polarization state for the light that the slave liquid crystal molecule short axle seen in display module side projects with
The polarization state of second polaroid 32 is different, also, Δ n (specific refractivity of long axis of liquid crystal molecule and short axle) at this time is minimum,
Thickness d in the second liquid crystal layer 24 is identical, and Δ nd is minimum, and those skilled in the art both knows about, display module
Transmitance is with Δ nd at SIN function relationship, and therefore, in the case of Δ nd minimums, the transmitance of display module is minimum, so
Only a small part light projects.
When realizing non-peep-proof function, and " from the long axis and short axle of liquid crystal molecule project light luminance difference very little ", be because
For：In the polarization state of the polarization state and the second polaroid 32 of the light that the short axle for the slave liquid crystal molecule that display module front is seen projects
Identical, therefore, the light by the refraction of liquid crystal molecule short axle can be projected all from the second polaroid 32；Although in display module side
The polarization state for the light that the slave long axis of liquid crystal molecule seen projects is different from the polarization state of the second polaroid 32, but Δ n at this time
Maximum, the thickness d in the second liquid crystal layer 24 is identical, and Δ nd is maximum, and the transmitance of display module is also maximum, so from
The brightness for the light that display module side is seen is also very big.
The embodiment of the present invention provides a kind of display device, includes the display module of aforementioned any embodiment.
Wherein, the display device can be display panel, can also be the display comprising display panel.
The embodiment of the present invention provides a kind of display device, has technique effect identical with aforementioned display module, herein not
It repeats again.
The embodiment of the present invention provides a kind of anti-peeping method of the display device as described in aforementioned any embodiment, including：It is aobvious
The pixel electrode 13 and public electrode 12 for showing liquid crystal cell 10 input the corresponding first voltage of image to be displayed；Peep-proof liquid crystal cell 20
First electrode 22 and second electrode 26 input second voltage so that the peep-proof liquid crystal cell 20 is in non-peep-proof state and peep-proof state
Between switch.
Herein, first voltage can control whether the first liquid crystal layer 15 deflects, and the light for showing liquid crystal cell 10 is injected to change
Polarization state；Second voltage can control whether the second liquid crystal layer 24 deflects, and the inclined of the light of peep-proof liquid crystal cell 20 is injected with change
Polarization state, so that the display panel on the basis of normally can show picture, realizes non-peep-proof or peep-proof function.
In addition, display liquid crystal cell 10 further include for be arranged the first substrate 11 of pixel electrode 13 and public electrode 12, with
And the second substrate 17 opposite with the first substrate 11, first substrate 11 further include first alignment layer 14, second substrate 17 wraps
Include second orientation layer 16；First alignment layer 14 is identical as the differently- oriented directivity of second orientation layer 16.Peep-proof liquid crystal cell 20 further includes using
Third substrate 21 in setting first electrode 22 and tetrabasal 27 for second electrode 26 to be arranged；Third substrate 21 is also
Including third oriented layer 23, tetrabasal 27 further includes the 4th oriented layer 25；Third oriented layer 23 takes with the 4th oriented layer 25
It is mutually perpendicular to direction；Alternatively, third oriented layer 23 is identical as the differently- oriented directivity of the 4th oriented layer 25.
Wherein, the second substrate 17 of display liquid crystal cell 10 can be shared with the third substrate 21 of peep-proof liquid crystal cell 20, with drop
The thickness of the low display panel is conducive to the slimming design of the display panel；Certainly, the second base of liquid crystal cell 10 is shown
Plate 17 and the third substrate 21 of peep-proof liquid crystal cell 20 can also be two individual substrates, and this is not limited by the present invention.
The display panel further includes color film layer (not shown), and display liquid crystal cell 10 can be arranged in the coloured silk film layer
In, it can also be arranged in peep-proof liquid crystal cell 20.When the color film layer is arranged when showing in liquid crystal cell 10, the coloured silk film layer can
To be arranged in first substrate 11 close to the side of second substrate 17, can also be arranged in second substrate 17 close to first substrate 11
Side；When the color film layer is arranged in peep-proof liquid crystal cell 20, the coloured silk film layer can be arranged in third substrate 21 close to the
The side of tetrabasal 27 can also be arranged in tetrabasal 27 close to the side of third substrate 21.
It should be noted that first, not to showing that the type of liquid crystal cell 10 is defined, as long as the picture of display liquid crystal cell 10
Plain electrode 13 and public electrode 12 are located at the same side of the first liquid crystal layer 15.For example, display liquid crystal cell 10 can be advanced
Super dimension field switch ADS types liquid crystal cell or IPS type liquid crystal cells.
The type of peep-proof liquid crystal cell 20 is not defined, as long as the first electrode 22 and second electrode of peep-proof liquid crystal cell 20
26 are located at the opposite sides of the second liquid crystal layer 24.For example, peep-proof liquid crystal cell 20 can be TN type liquid crystal cells, or vertically take
To VA type liquid crystal cells.
Herein, when in peep-proof liquid crystal cell 20 third oriented layer 23 and the differently- oriented directivity of the 4th oriented layer 25 be mutually perpendicular to
When, peep-proof liquid crystal cell 20 for example can be TN type liquid crystal cells；When the third oriented layer 23 and the 4th in peep-proof liquid crystal cell 20 is orientated
When the differently- oriented directivity of layer 25 is identical, peep-proof liquid crystal cell 20 for example can be VA type liquid crystal cells.
Second, since polaroid not being arranged between the display liquid crystal cell 10 and peep-proof liquid crystal cell 20 of the display panel, because
This, injects and shows that the light of liquid crystal cell 10 can be injected in peep-proof liquid crystal cell 20.
The embodiment of the present invention provides a kind of anti-peeping method of the display device as described in aforementioned any embodiment, have with it is preceding
The identical technique effect of display module is stated, details are not described herein.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of display panel, which is characterized in that including：The display that the direction of side is set gradually is shown towards the display panel
Liquid crystal cell, peep-proof liquid crystal cell；
The display liquid crystal cell, including：First liquid crystal layer, multigroup pixel electrode for driving first liquid crystal layer deflection and
Public electrode, the pixel electrode and the public electrode are located at the same side of first liquid crystal layer；Multigroup pixel electricity
Pole and the public electrode are for inputting the corresponding first voltage of image to be displayed；
The peep-proof liquid crystal cell, including：Second liquid crystal layer, the first electrode and second for driving the second liquid crystal layer deflection
Electrode, the first electrode and the second electrode are located at the opposite sides of second liquid crystal layer；The first electrode and institute
The second voltage for stating second electrode input, for making the peep-proof liquid crystal cell switch between non-peep-proof state and peep-proof state.
2. display panel according to claim 1, which is characterized in that the display liquid crystal cell further includes described for being arranged
The first substrate and the second substrate opposite with the first substrate of pixel electrode and the public electrode；
The first substrate further includes first alignment layer, and the second substrate includes second orientation layer；The first alignment layer with
The differently- oriented directivity of the second orientation layer is identical.
3. display panel according to claim 2, which is characterized in that the peep-proof liquid crystal cell further includes described for being arranged
The third substrate of first electrode and the tetrabasal for the second electrode to be arranged；
The third substrate further includes third oriented layer, and the tetrabasal further includes the 4th oriented layer；
The differently- oriented directivity of the third oriented layer and the 4th oriented layer is mutually perpendicular to；Alternatively, the third oriented layer and institute
The differently- oriented directivity for stating the 4th oriented layer is identical.
4. display panel according to claim 3, which is characterized in that
The display liquid crystal cell is ADS liquid crystal cells or IPS liquid crystal cells；
In the case where the differently- oriented directivity of the third oriented layer and the 4th oriented layer is mutually perpendicular to, the peep-proof liquid crystal cell
For TN liquid crystal cells；It is identical with the differently- oriented directivity of the 4th oriented layer in the third oriented layer, the peep-proof liquid crystal cell
For VA liquid crystal cells.
5. display panel according to claim 3, which is characterized in that the second substrate is shared with the third substrate.
6. display panel according to claim 1, which is characterized in that further include color film layer, the coloured silk film layer is set to institute
It states in display liquid crystal cell or the color film layer is set in the peep-proof liquid crystal cell.
7. a kind of display module, which is characterized in that partially including claim 1~6 any one of them display panel and first
Mating plate and the second polaroid；
First polaroid is set to side of first liquid crystal layer far from the second liquid crystal layer, and second polaroid is set to institute
State side of second liquid crystal layer far from first liquid crystal layer.
8. display module according to claim 7, which is characterized in that first polaroid and second polaroid
Polarizing axis perpendicular quadrature；Alternatively, first polaroid is parallel with the polarizing axis of the second polaroid.
9. a kind of display device, which is characterized in that including the display module described in claim 7 or 8.
10. a kind of anti-peeping method of display device as claimed in claim 9, which is characterized in that including：
Show the pixel electrode and the corresponding first voltage of public electrode input image to be displayed of liquid crystal cell；
The first electrode and second electrode of peep-proof liquid crystal cell input second voltage so that the peep-proof liquid crystal cell is in non-peep-proof state
Switch between peep-proof state.
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| CN201810241858.5A CN108363250B (en) | 2018-03-22 | 2018-03-22 | Display panel, display assembly, display device and peep-proof method thereof |
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