CN106125361B - A kind of display panel and its driving method and display device - Google Patents
A kind of display panel and its driving method and display device Download PDFInfo
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- CN106125361B CN106125361B CN201610638128.XA CN201610638128A CN106125361B CN 106125361 B CN106125361 B CN 106125361B CN 201610638128 A CN201610638128 A CN 201610638128A CN 106125361 B CN106125361 B CN 106125361B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1323—Arrangements for providing a switchable viewing angle
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- Optics & Photonics (AREA)
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Abstract
The present invention provides a kind of display panel and its driving method and display device.The display panel includes collimated light source and the liquid crystal cell that collimated light source light emission side is arranged in, collimated light source is used to show that image provides collimated ray for liquid crystal cell, it further include eye tracks unit and liquid crystal deflection control unit, liquid crystal deflection control unit connects eye tracks unit, the liquid crystal deflection in eyes position control liquid crystal cell for being obtained according to eye tracks unit, so as to enter in the eyes of specific position through the light that liquid crystal cell is shown.The display panel can make the exit direction of liquid crystal cell light for displaying images change, so that the light for showing image be made to enter in the eyes of specific position, and then realize peep-proof and show；Meanwhile the exit direction of display light is changed by eye tracks unit and liquid crystal deflection control unit, the utilization rate of display light is also improved, display power consumption is reduced.
Description
Technical field
The present invention relates to field of display technology, and in particular, to a kind of display panel and its driving method and display device.
Background technique
With the fast development of flat panel display, indication range and application scenarios are constantly being expanded.What peep-proof was shown
Application scenarios come into being, and in such a scenario, peep-proof is shown can provide the viewing experience of enough secrets to observer, significantly
It is improved in the secret display effect in Special display field.
The light-emitting angle (or visible angle) of current liquid crystal display panel can achieve ± 70 ° or be up to
Close to 90 ° (contrast 10:1).And in certain occasions, such as display, laptop, mobile phone and tablet computer display device
It needs that there is lesser visible angle, has certain secret and peep-proof function.Display device is just needed in these cases
Light-emitting angle reduces to a certain extent.And, it is generally the case that display device is only needed for specific some or certain several observations
Person carries out independent display, without all having good display effect to entire solid space.If can be realized for spy
The independent display for determining observer, then can be further improved energy utilization efficiency.
Therefore, how to realize the independent display for particular observer becomes current urgent problem to be solved.
Summary of the invention
The present invention is directed to the above-mentioned technical problems in the prior art, provide a kind of display panel and its driving method and
Display device.The display panel can make the exit direction of liquid crystal cell light for displaying images change, to make to show
The light of image enters in the eyes of specific position, and then realizes peep-proof and show；Meanwhile by eye tracks unit and
Liquid crystal deflection control unit is changed the exit direction of display light, also improves the utilization rate of display light, reduces
Show power consumption.
The present invention provides a kind of display panel, including collimated light source and the liquid crystal that the collimated light source light emission side is arranged in
Box, the collimated light source are used to show that image provides collimated ray for the liquid crystal cell, further include eye tracks unit and liquid crystal
Control unit is deflected, the liquid crystal deflection control unit connects the eye tracks unit, for according to the eye tracks list
The eyes position that member obtains controls the liquid crystal deflection in the liquid crystal cell so that the light shown through the liquid crystal cell into
Enter to be located in the eyes of specific position.
Preferably, the liquid crystal deflection control unit includes being separately positioned in the liquid crystal cell upper substrate and lower substrate
First electrode and second electrode；
For applying different voltage in the first electrode and the second electrode, so as to the first electrode and described
The electric field energy formed between second electrode makes the liquid crystal of corresponding region deflect, and penetrates what the liquid crystal cell was shown to control
The light direction of light.
Preferably, the first electrode includes multiple, and multiple first electrode size shapes are identical and arrangement is in battle array
Column；The second electrode is plane electrode；
Each first electrode includes multiple strip sub-electrodes, and the multiple strip sub-electrode is combined into polygon shape
Shape, and the multiple strip sub-electrode is not connected between each other, each strip sub-electrode is for one drive of corresponding access
Dynamic voltage；The second electrode is for accessing fixed voltage.
Preferably, the liquid crystal deflection control unit further includes scan drive circuit and data drive circuit, the scanning
Driving circuit includes multi-strip scanning line, and every scan line is correspondingly connected in first electrode described in a line same positioned at each polygon
The strip sub-electrode on side；
The data drive circuit includes multiple data lines, and every data line is correspondingly connected with the strip electricity
Pole.
It preferably, further include diffraction beam splitter layer, the diffraction beam splitter layer is arranged in the incident side of the liquid crystal cell and is located at
The light emission side of the collimated light source；
The collimated ray that the collimated light source issues can be incident in the diffraction beam splitter layer, be gone out from the diffraction beam splitter layer
The light penetrated can be incident in the liquid crystal cell；The diffraction beam splitter layer be used for be incident to the collimated ray of the liquid crystal cell into
Line direction premodulated, so as to can enter in the eyes of specific position from the light that the liquid crystal cell is emitted；
The diffraction beam splitter layer can be such that environment light penetrates.
Preferably, the diffraction beam splitter layer includes light guide plate and multiple light for being arranged on the light-emitting surface of the light guide plate
Grid, multiple grating arrangements are in array；
The grating is used to carry out direction premodulated to the light for being incident to the liquid crystal cell corresponding region；
The collimated light source includes red sub-light source, green sub-light source and blue sub-light source；The grating can be to different face
The light that the sub-light source of color issues is divided, so that a kind of corresponding light for projecting color of each grating；
Along line direction where the grating, it is respectively used to separate red, green and blue three per adjacent three gratings
The light of kind color.
Preferably, the grating and the first electrode correspond.
Preferably, along line direction where the grating, per adjacent three one group of the optical grating constitutions, grating pair described in every group
Answer the first electrode.
Preferably, along line direction where the first electrode, per adjacent three, the first electrode constitutes one group, along described
Line direction where grating, per adjacent three one group of the optical grating constitutions；
Along one end to its one end far from the collimated light source close to the collimated light source of the diffraction beam splitter layer, often
The group number of the grating corresponding to the group first electrode increases according to setting ratio；The setting ratio is along the diffraction point
The emitting brightness in direction of the photosphere far from the collimated light source, the diffraction beam splitter layer different zones is adjacent to the collimated light
The ratio of the emitting brightness of source one end.
Preferably, the liquid crystal deflection control unit further includes control module, and the control module is described red for controlling
Dice light source, the green sub-light source and the blue sub-light source are flashed according to setpoint frequency, and according to correspondence first electricity
The light that grating described in the display brightness control of the liquid crystal region of pole separates the red sub-light source, the green sub-light source and
Enter the duration of the eyes in the lighting time of the blue sub-light source.
The present invention also provides a kind of display devices, including above-mentioned display panel.
The present invention also provides a kind of driving methods of above-mentioned display panel, comprising:
Collimated light source shows that image provides collimated ray for liquid crystal cell；
Eye tracks unit obtains eyes position；
Liquid crystal deflection control unit controls the liquid crystal deflection in the liquid crystal cell according to the eyes position, so that thoroughly
The light that the liquid crystal cell is shown is crossed to enter in the eyes of specific position.
Preferably, the liquid crystal deflection control unit includes first electrode and second electrode；
Apply different voltages in the first electrode and the second electrode, so as to the first electrode and described second
The electric field energy formed between electrode makes the liquid crystal of corresponding region deflect, to control the light shown through the liquid crystal cell
Light direction.
Preferably, the collimated light source includes red sub-light source, green sub-light source and blue sub-light source；The display panel
It further include diffraction beam splitter layer, the diffraction beam splitter layer includes multiple gratings, and the first electrode includes multiple, the grating and institute
State first electrode one-to-one correspondence；
The liquid crystal deflection control unit controls the red sub-light source, the green sub-light source and the blue sub-light source
It is flashed according to setpoint frequency, and according to the display brightness control of the liquid crystal region of correspondence first electrode grating separates
Light enters the eyes within the lighting time of the red sub-light source, the green sub-light source and the blue sub-light source
Duration.
Beneficial effects of the present invention: display panel provided by the present invention, it is inclined by setting eye tracks unit and liquid crystal
Turn control unit, the exit direction of liquid crystal cell light for displaying images can be made to change, to make the light for showing image
Line enters in the eyes of specific position, and then realizes peep-proof and show；Meanwhile passing through eye tracks unit and liquid crystal deflection
Control unit is changed the exit direction of display light, also improves the utilization rate of display light, reduces display power consumption.
Display device provided by the present invention can be realized the display device and be directed to by using above-mentioned display panel
Specific position is shown, is shown so that the display device be made to realize peep-proof.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of display panel in the embodiment of the present invention 1；
Fig. 2 is the structure top view of first electrode and second electrode in Fig. 1 liquid crystal cell；
Fig. 3 is the schematic diagram that liquid crystal deflects in the electric field that first electrode and second electrode are formed；
Fig. 4 is the refractive index profile of the liquid crystal in the electric field that first electrode and second electrode are formed；
Fig. 5 is the circuit connection diagram of first electrode；
Fig. 6 is the structural schematic diagram of diffraction beam splitter layer in Fig. 1；
Fig. 7 is the schematic diagram that grating is modulated the transmission diffraction light direction of incident ray；
Fig. 8 is the schematic diagram that grating is modulated the diffraction azimuth of incident ray；
Fig. 9 is the distribution schematic diagram of grating and first electrode；
Figure 10 is the timing diagram of the Led lamp flashing of three kinds of colors；
Figure 11 is the timing diagram that grayscale adjustment is carried out to the sub-pixel of three kinds of colors；
Figure 12 is the structural schematic diagram of display panel in the embodiment of the present invention 4.
Description of symbols therein:
1. collimated light source；11. red sub-light source；12. green sub-light source；13. blue sub-light source；2. liquid crystal cell；3. eyes
Tracing unit；4. liquid crystal deflection control unit；41. first electrode；411. sub-electrode；42. second electrode；43. turntable driving is electric
Road；431. scan line；44. data drive circuit；441. data line；45. control module；5. eyes；6. diffraction beam splitter layer；61.
Light guide plate；62. grating.
Specific embodiment
To make those skilled in the art more fully understand technical solution of the present invention, with reference to the accompanying drawing and it is embodied
Mode is described in further detail a kind of display panel provided by the present invention and its driving method and display device.
Embodiment 1:
The present embodiment provides a kind of display panels, as shown in Figure 1, going out light in collimated light source 1 including collimated light source 1 and setting
The liquid crystal cell 2 of side, collimated light source 1 are used to show that image provides collimated ray for liquid crystal cell 2, further include 3 He of eye tracks unit
Liquid crystal deflection control unit 4, liquid crystal deflection control unit 4 connects eye tracks unit 3, for being obtained according to eye tracks unit 3
The liquid crystal deflection in eyes position control liquid crystal cell 2 taken, so as to enter through the light that liquid crystal cell 2 is shown positioned at specific
In the eyes 5 of position.
By setting eye tracks unit 3 and liquid crystal deflection control unit 4, the light for displaying images of liquid crystal cell 2 can be made
The exit direction of line changes, so that the light for showing image be made to enter in the eyes 5 of specific position, and then realizes
Peep-proof is shown；Meanwhile being changed by the exit direction of eye tracks unit 3 and 4 pairs of liquid crystal deflection control unit display light
Become, also improves the utilization rate of display light, reduce display power consumption.
In the present embodiment, as shown in Fig. 2, liquid crystal deflection control unit 4 includes being separately positioned on 2 upper substrate of liquid crystal cell under
First electrode 41 and second electrode 42 in substrate.For applying different voltage in first electrode 41 and second electrode 42, with
Just the electric field energy formed between first electrode 41 and second electrode 42 makes the liquid crystal of corresponding region deflect to control transmission
The light direction for the light that liquid crystal cell 2 is shown.
Wherein, first electrode 41 includes multiple, and multiple 41 size shapes of first electrode are identical and arrangement is in array；Second
Electrode 42 is plane electrode.Each first electrode 41 includes multiple strip sub-electrodes 411, and multiple strip sub-electrodes 411 are combined into
Polygonal shape, and multiple strip sub-electrodes 411 are not connected between each other, each strip sub-electrode 411 is for corresponding access
One driving voltage；Second electrode 42 is for accessing fixed voltage.
In the present embodiment, preferably each first electrode 41 includes six strip sub-electrodes 411, six strip sub-electrodes 411
It is combined into hexagonal shape.So set, each first electrode 41 region corresponding with second electrode 42 can be made to be respectively formed one
Electric field, the corresponding liquid crystal for being distributed in each electric field region can deflect (as shown in Figure 3) under the action of each electric field, each electric field energy
Make the refractive index distribution gradient for the liquid crystal for being distributed in corresponding region, so that the liquid crystal of each corresponding region be made to have the functions of lens
(as shown in Figure 4)；Meanwhile each electric field energy makes the refractive index for the liquid crystal for being distributed in corresponding region in gradient point symmetrically or non-symmetrically
Cloth, this is equivalent to that each lens is made to carry out different degrees of deflection respectively, to make finally from the light side that liquid crystal cell 2 is emitted
To changing, and then enter emergent ray in the eyes 5 of specific position.
It should be noted that the liquid crystal for being distributed in each electric field corresponding region has respectively constituted each height picture of the display panel
Element, into each first electrode 41, each sub-electrode 411 applies different voltages, to realize to the corresponding electricity of each first electrode 41
The control respectively of field, and then realize the control to each sub-pixel in display.
In the present embodiment, as shown in figure 5, liquid crystal deflection control unit 4 further includes scan drive circuit 43 and data-driven
Circuit 44, scan drive circuit 43 include multi-strip scanning line 431, and every scan line 431 is correspondingly connected in a line first electrode 41
Positioned at each polygon with the strip sub-electrode 411 on one side；Data drive circuit 44 includes multiple data lines 441, every number
A strip sub-electrode 411 is correspondingly connected with according to line 441.I.e. to be located at same row first electrode 41 in hexagon with the item on one side
Shape sub-electrode 411 is carried out while being scanned, and is provided data drive voltage respectively to each strip sub-electrode 411, so be can be realized
Different sub-electrodes 411 into first electrode 41 apply different driving voltages respectively, to make entire first electrode 41 and phase
Different electric fields is formed between corresponding the second electrode region, and then realizes the display control of different subpixel in liquid crystal cell 2.
In the present embodiment, as shown in Figure 1, display panel further includes diffraction beam splitter layer 6, diffraction beam splitter layer 6 is arranged in liquid crystal
The incident side of box 2 and the light emission side for being located at collimated light source 1.The collimated ray that collimated light source 1 issues can be incident to diffraction beam splitter layer
In 6, the light being emitted from diffraction beam splitter layer 6 can be incident in liquid crystal cell 2；Diffraction beam splitter layer 6 is used for being incident to liquid crystal cell 2
Collimated ray carries out direction premodulated, so as to can enter in the eyes 5 of specific position from the light that liquid crystal cell 2 is emitted；Spread out
Penetrating beam splitter layer 6 can be such that environment light penetrates.
The setting of diffraction beam splitter layer 6 can be realized into the radiation direction premodulated before liquid crystal cell 2, make to be incident to liquid
Light in brilliant box 2 can pre-adjust within the scope of some incident direction, on the basis of this direction premodulated, be incident to liquid crystal
Light in box 2 is adjusted by the further direction of liquid crystal cell 2, finally enables the light being emitted from liquid crystal cell 2 more accurate
Ground enters eyes 5, so that the display panel be made to realize the display of more accurate specific direction.In addition, since environment light is
The light emitted to all directions, diffraction beam splitter layer 6 will not be changed the direction of environment light, i.e., diffraction beam splitter layer 6 can make
Environment light keeps the former direction of the launch normally to penetrate, so that the display panel be made to can be realized transparence display.
Wherein, as shown in fig. 6, diffraction beam splitter layer 6 includes light guide plate 61 and is arranged in more on the light-emitting surface of light guide plate 61
A grating 62, multiple arrangements of grating 62 are in array.Grating 62 is used to carry out direction to the light for being incident to 2 corresponding region of liquid crystal cell
Premodulated.Collimated light source 1 includes red sub-light source 11, green sub-light source 12 and blue sub-light source 13；Grating 62 can be to different face
The light that the sub-light source of color issues is divided, so that a kind of corresponding light for projecting color of each grating 62.Along 62 institute of grating
In line direction, it is respectively used to separate red, three kinds of colors of green and blue light per adjacent three gratings 62.
In the present embodiment, grating 62 carries out the principle of transmission diffraction direction premodulated such as to the light for being incident to liquid crystal cell 2
Shown in Fig. 7 and Fig. 8, collimated ray is incident in light guide plate 61 from the side of light guide plate 61, then to be greater than the complete of light guide plate 61
The angle of angle of reflection is incident on grating 62, is designed to the parameter of grating 62, and incident ray can be made by the saturating of grating 62
It penetrates and diffraction, only exports -1 grade of transmission diffraction light, remaining transmission level and reflection diffracting light are suppressed in light guide plate 61
Portion；Design the grating 62 of different cycles and groove orientation simultaneously, may be implemented to -1 grade of direction of transmission diffraction of incident ray into
Row regulation.Wherein, the modulation to the transmission diffraction light direction of incident ray and the azimuthal modulation of diffraction meet following respectively
Formula (1):
Wherein, λ is incident ray wavelength；θ is angle of incidence of light (i.e. the angle of incident ray vector k and z-axis positive direction)；
φ is the groove orientation angle (i.e. the angle of groove direction y1 and y-axis direction) of grating 62；Λ is the period of grating 62；θ-1To enter
Penetrate the transmission diffraction light direction (i.e. the angle of the diffracted ray vector of incident ray and z-axis positive direction) of light；φ-1For incidence
Light diffraction azimuth (i.e. projection x1 of the diffracted ray vector of incident ray in the plane that x-axis and y-axis intersect to form with
The angle of positive direction of the x-axis)；n1For the refractive index of light guide plate 61；n2For the refractive index of air.
In addition, grating 62 can be divided the light of different wave length, i.e., each grating 62 by adjusting its parameter designing,
It can select the light of injection different wave length.Since the wavelength of light of different colours is different, so grating 62 can be to different colours
The light that sub-light source issues is divided, and a kind of corresponding light for projecting color of each grating 62 is made.
In the present embodiment, as shown in figure 9, grating 62 and first electrode 41 correspond.Due to the corresponding area of first electrode 41
The liquid crystal in domain constitutes the sub-pixel of the display panel, and along 62 place line direction of grating, uses respectively per adjacent three gratings 62
In the light for separating three kinds of red, green and blue colors, by red, three kinds of color lights of green and blue corresponding three
Light mixing on a sub-pixel realizes the colored display of the display panel.
In the present embodiment, liquid crystal deflection control unit 4 further includes control module 45 (as shown in Figure 5), and control module 45 is used
It is flashed in controlling red sub-light source, green sub-light source and blue sub-light source according to setpoint frequency, and according to corresponding first electrode 41
Liquid crystal region the light that separates of display brightness control grating 62 in red sub-light source, green sub-light source and blue sub-light source
Enter the duration of eyes 5 in lighting time.
The setting of control module 45, the gray scale control of each color when realizing to display panel display.Control module
The gray scale control of 45 pairs of each colors specifically: as shown in Figure 10,
Collimated light source 1 is flashed with certain period, such as: the Led lamp of three kinds of colors is with cycle T+T ' flashing, wherein T is a little
Bright time, T ' are the fall time.Lighting time T determines the maximum brightness of display panel, i.e., the time T that Led lamp is lighted is got over
Long, then the maximum brightness of display panel is higher, and the time T that Led lamp is lighted is shorter, then the maximum brightness of display panel is lower, from
And realize the gray scale control of display panel entirety.
As shown in figure 11, by taking the light that grating 62 separates is red light (i.e. R light) as an example, in the T time that red Led lamp is lighted
It is interior, by being defined as the liquid crystal deflection in corresponding 62 region of red light grating by the duration that incident red light is directed into eyes
Red sub-pixel lights duration, a length of Xr*T when lighting, wherein 0≤Xr≤1, i.e. 0≤Xr*T≤T.Same reason,
A length of Xg*T when lighting, 0≤Xg*T≤T of green sub-pixels；A length of Xb*T when lighting, 0≤Xb*T≤T of blue subpixels.
Control adjustment is carried out by the above-mentioned duration of lighting to different colours sub-pixel, can be achieved with to each sub-pixel
Grayscale is adjusted；The grayscale of pixel each on display panel is adjusted to realize.
Above structure based on display panel, the present embodiment also provide a kind of driving method of display panel, comprising:
Step S1: collimated light source shows that image provides collimated ray for liquid crystal cell.
Step S2: eye tracks unit obtains eyes position.
Step S3: liquid crystal deflection control unit controls the liquid crystal deflection in liquid crystal cell according to eyes position, so that thoroughly
The light that liquid crystal cell is shown is crossed to enter in the eyes of specific position.
In the step, liquid crystal deflection control unit includes first electrode and second electrode；In first electrode and second electrode
Upper application different voltages, so that the electric field energy formed between first electrode and second electrode occurs that the liquid crystal of corresponding region partially
Turn, to control the light direction of the light shown through liquid crystal cell.
By above-mentioned driving method, the exit direction of liquid crystal cell light for displaying images can be made to change, thus
Enter the light for showing image in the eyes of specific position, and then realizes peep-proof and show；Meanwhile passing through eye tracks
Unit and liquid crystal deflection control unit are changed the exit direction of display light, also improve the utilization rate of display light,
Reduce display power consumption.
Wherein, collimated light source includes red sub-light source, green sub-light source and blue sub-light source；Display panel further includes diffraction
Beam splitter layer, diffraction beam splitter layer include multiple gratings, and first electrode includes multiple, grating and first electrode one-to-one correspondence.
Preferably, liquid crystal deflection control unit controls red sub-light source, green sub-light source and blue sub-light source according to setting
Frequency scintillation, and the light separated according to the display brightness control grating of the liquid crystal region of corresponding first electrode is in red sub-light
Enter the duration of eyes in the lighting time in source, green sub-light source and blue sub-light source.To realize to display panel entirety
The adjustment of grayscale is controlled and is controlled the adjustment of pixel gray level each on display panel.
Embodiment 2:
The present embodiment provides a kind of display panels, unlike the first embodiment, along line direction where first electrode, every phase
Adjacent three first electrodes constitute one group, along line direction where grating, per adjacent one group of three optical grating constitutions；Along diffraction beam splitter layer
Close to one end to its one end far from collimated light source of collimated light source, the group number of grating corresponding to every group of first electrode is according to setting
Ratio increases；The setting ratio is the direction along diffraction beam splitter layer far from collimated light source, and diffraction beam splitter layer different zones go out light
Brightness is adjacent to the ratio of the emitting brightness of collimated light source one end.
I.e. from the dipped beam end of diffraction beam splitter layer to distance light end, the group number of grating corresponding to one group of first electrode is more and more,
At the distance light end of diffraction beam splitter layer, red that multiple groups grating separates, green and blue light all correspond to pair from one group of first electrode
Region is answered to be emitted, to increase the emitting brightness that this group of first electrode corresponds to region；Finally make the display panel distance light end
Display brightness and the display brightness at dipped beam end reach unanimity, and then improve the uniformity of the display panel display brightness.
The other structures of display panel and driving method are in the same manner as in Example 1 in the present embodiment, and details are not described herein again.
Embodiment 3:
The present embodiment provides a kind of display panels, unlike embodiment 1-2, along line direction where grating, per adjacent
Three one group of optical grating constitution, the corresponding first electrode of every group of grating.
Since three gratings in one group of grating can separate red, green and blue light respectively, this three coloured light is in the first electricity
Extremely corresponding region carries out light mixing, and enters eyes under the deflecting action of the region liquid crystal, in eyes after three coloured light light mixing
In watch white, therefore, such setting can make the display panel realize white and black displays.
The other structures of display panel and driving method are in the same manner as in Example 1 in the present embodiment, and details are not described herein again.
Embodiment 4:
The present embodiment provides a kind of display panels, unlike embodiment 1-3, as shown in figure 12, in the present embodiment
Display panel does not include diffraction beam splitter layer, and collimated light source 1 is located at the side back to its light emission side of liquid crystal cell 2.
Display panel in the present embodiment can only realize that white and black displays (are red, green and blue three-color light source in collimated light source 1
In the case of) or monochromatic display (in the case where collimated light source 1 is monochromatic source).
Correspondingly, the driving method of display panel does not include whole grayscale and pixel to display panel yet in the present embodiment
The adjustment of grayscale controls.
Display panel in the present embodiment can equally be made by setting eye tracks unit 3 and liquid crystal deflection control unit 4
The exit direction of the light for displaying images of liquid crystal cell 2 changes, so that the light for showing image be made to enter positioned at specific
In the eyes 5 of position, and then realizes peep-proof and show.But due to diffraction beam splitter layer not set in the display panel, so can not
Direction premodulated is carried out to the collimated ray for being incident to liquid crystal cell, so the display panel is accurate to the change in beam projecting direction
Spend relatively low, peep-proof display effect is not as good as the display panel in embodiment 1.
Embodiment 1-4's the utility model has the advantages that display panel provided by embodiment 1-4, by setting eye tracks unit and
Liquid crystal deflection control unit can make the exit direction of liquid crystal cell light for displaying images change, so that display be made to scheme
The light of picture enters in the eyes of specific position, and then realizes peep-proof and show；Meanwhile passing through eye tracks unit and liquid
Crystalline substance deflection control unit is changed the exit direction of display light, also improves the utilization rate of display light, reduces aobvious
Show power consumption.
Embodiment 5:
A kind of display panel the present embodiment provides display device, including embodiment 1-4 in any one.
It by using display panel of the embodiment 1-4 in any one, can be realized the display device for certain bits
It sets and is shown, shown so that the display device be made to realize peep-proof.
Display device provided by the present invention can be that liquid crystal display panel, LCD TV, display, mobile phone, navigator etc. are appointed
What products or components having a display function.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (12)
1. a kind of display panel, including collimated light source and the liquid crystal cell that the collimated light source light emission side is arranged in, the collimated light
Source is used to show that image provides collimated ray for the liquid crystal cell, which is characterized in that further includes that eye tracks unit and liquid crystal are inclined
Turn control unit, the liquid crystal deflection control unit connects the eye tracks unit, for according to the eye tracks unit
The eyes position of acquisition controls the liquid crystal deflection in the liquid crystal cell, so as to enter through the light that the liquid crystal cell is shown
In the eyes of specific position；
The liquid crystal deflection control unit include the first electrode that is separately positioned in the liquid crystal cell upper substrate and lower substrate and
Second electrode；
For applying different voltage in the first electrode and the second electrode, so as to the first electrode and described second
The electric field energy formed between electrode makes the liquid crystal of corresponding region deflect, to control the light shown through the liquid crystal cell
Light direction；
The first electrode include it is multiple, multiple first electrode size shapes it is identical and arrangement be in array；Second electricity
Extremely plane electrode；
Each first electrode includes multiple strip sub-electrodes, and the multiple strip sub-electrode is combined into polygonal shape, and
The multiple strip sub-electrode is not connected between each other, and each strip sub-electrode accesses a driving electricity for corresponding
Pressure；The second electrode is for accessing fixed voltage.
2. display panel according to claim 1, which is characterized in that the liquid crystal deflection control unit further includes that scanning is driven
Dynamic circuit and data drive circuit, the scan drive circuit include multi-strip scanning line, and every scan line is correspondingly connected with a line institute
It states and is located at each polygon in first electrode with the strip sub-electrode on one side；
The data drive circuit includes multiple data lines, and every data line is correspondingly connected with the strip sub-electrode.
3. display panel according to claim 1, which is characterized in that it further include diffraction beam splitter layer, the diffraction beam splitter layer
The incident side of the liquid crystal cell is set and is located at the light emission side of the collimated light source；
The collimated ray that the collimated light source issues can be incident in the diffraction beam splitter layer, be emitted from the diffraction beam splitter layer
Light can be incident in the liquid crystal cell；The diffraction beam splitter layer is used for the collimated ray progress side for being incident to the liquid crystal cell
To premodulated, so as to can enter in the eyes of specific position from the light that the liquid crystal cell is emitted；
The diffraction beam splitter layer can be such that environment light penetrates.
4. display panel according to claim 3, which is characterized in that the diffraction beam splitter layer includes that light guide plate and setting exist
Multiple gratings on the light-emitting surface of the light guide plate, multiple grating arrangements are in array；
The grating is used to carry out direction premodulated to the light for being incident to the liquid crystal cell corresponding region；
The collimated light source includes red sub-light source, green sub-light source and blue sub-light source；The grating can be to different colours
The light that sub-light source issues is divided, so that a kind of corresponding light for projecting color of each grating；
Along line direction where the grating, it is respectively used to separate red, three kinds of face of green and blue per adjacent three gratings
The light of color.
5. display panel according to claim 4, which is characterized in that the grating and the first electrode correspond.
6. display panel according to claim 4, which is characterized in that along line direction where the grating, per adjacent three
One group of the optical grating constitution, the corresponding first electrode of grating described in every group.
7. display panel according to claim 4, which is characterized in that along line direction where the first electrode, per adjacent
Three first electrodes constitute one group, along line direction where the grating, per adjacent three one group of the optical grating constitutions；
Along one end to its one end far from the collimated light source close to the collimated light source of the diffraction beam splitter layer, every group of institute
The group number for stating the grating corresponding to first electrode increases according to setting ratio；The setting ratio is along the diffraction beam splitter layer
Direction far from the collimated light source, the emitting brightness of the diffraction beam splitter layer different zones are adjacent to the collimated light source one
The ratio of the emitting brightness at end.
8. display panel according to claim 5, which is characterized in that the liquid crystal deflection control unit further includes control mould
Block, the control module is for controlling the red sub-light source, the green sub-light source and the blue sub-light source according to setting
Frequency scintillation, and the light that the grating according to the display brightness control of the liquid crystal region of the correspondence first electrode separates is in institute
State the duration for entering the eyes in the lighting time of red sub-light source, the green sub-light source and the blue sub-light source.
9. a kind of display device, which is characterized in that including display panel described in claim 1-8 any one.
10. a kind of driving method of the display panel as described in claim 1-8 any one characterized by comprising
Collimated light source shows that image provides collimated ray for liquid crystal cell；
Eye tracks unit obtains eyes position；
Liquid crystal deflection control unit controls the liquid crystal deflection in the liquid crystal cell according to the eyes position, so that through institute
The light that liquid crystal cell is shown is stated to enter in the eyes of specific position.
11. the driving method of display panel according to claim 10, which is characterized in that the liquid crystal deflection control unit
Including first electrode and second electrode；
Apply different voltages in the first electrode and the second electrode, so as to the first electrode and the second electrode
Between the electric field energy that is formed so that the liquid crystal of corresponding region is deflected, thus control light show through the liquid crystal cell out
Light direction.
12. the driving method of display panel according to claim 11, which is characterized in that the collimated light source includes red
Sub-light source, green sub-light source and blue sub-light source；The display panel further includes diffraction beam splitter layer, and the diffraction beam splitter layer includes
Multiple gratings, the first electrode include multiple, the grating and first electrode one-to-one correspondence；
The liquid crystal deflection control unit control red sub-light source, the green sub-light source and the blue sub-light source according to
Setpoint frequency flashing, and the light that the grating according to the display brightness control of the liquid crystal region of the correspondence first electrode separates
Enter within the lighting time of the red sub-light source, the green sub-light source and the blue sub-light source eyes when
It is long.
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| CN106707578B (en) * | 2017-03-20 | 2020-02-28 | 京东方科技集团股份有限公司 | Liquid crystal grating, display device and control method thereof |
| CN106954059A (en) * | 2017-03-30 | 2017-07-14 | 合肥鑫晟光电科技有限公司 | A kind of 3D display control methods, device and 3D display devices |
| CN106802502B (en) * | 2017-04-10 | 2018-10-30 | 京东方科技集团股份有限公司 | Liquid crystal diffraction zone plate, liquid crystal display panel, display methods, display device |
| CN107526980B (en) * | 2017-08-29 | 2021-08-03 | 努比亚技术有限公司 | Display device and mobile terminal |
| CN107884991A (en) * | 2017-12-19 | 2018-04-06 | 惠科股份有限公司 | A kind of display device and its control method |
| CN108734134A (en) | 2018-05-22 | 2018-11-02 | 京东方科技集团股份有限公司 | Fingerprint identification device |
| CN109031736B (en) | 2018-09-04 | 2021-03-09 | 京东方科技集团股份有限公司 | Collimation backlight source, display device and driving method thereof |
| CN113630926A (en) * | 2020-05-07 | 2021-11-09 | 固安翌光科技有限公司 | Organic electroluminescent screen and preparation method thereof |
| US11520191B2 (en) * | 2021-02-01 | 2022-12-06 | Dell Products L.P. | Segmented control of a display device's privacy cell |
| CN112859323B (en) * | 2021-03-19 | 2023-05-12 | 京东方科技集团股份有限公司 | Display panel, display device and display method |
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| JP5620420B2 (en) * | 2012-02-23 | 2014-11-05 | パナソニック株式会社 | Image display device |
| CN104732168B (en) * | 2015-03-20 | 2017-08-25 | 京东方科技集团股份有限公司 | A kind of display system, control method |
| CN105446028B (en) * | 2016-01-08 | 2019-12-10 | 京东方科技集团股份有限公司 | Liquid crystal lens plate and display device |
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