CN206074956U - A kind of display device - Google Patents
A kind of display device Download PDFInfo
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- CN206074956U CN206074956U CN201621147739.6U CN201621147739U CN206074956U CN 206074956 U CN206074956 U CN 206074956U CN 201621147739 U CN201621147739 U CN 201621147739U CN 206074956 U CN206074956 U CN 206074956U
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Abstract
This utility model embodiment provides a kind of display device, is related to display technology field, can pass through the change of the refractive index of control liquid crystal layer, adjust the amount of light in waveguide optical grating, to realize that GTG shows.The display device, including：The first underlay substrate being oppositely arranged and the second underlay substrate, and the liquid crystal layer between the first underlay substrate and the second underlay substrate, also include：Waveguide optical grating between liquid crystal layer and the first underlay substrate, waveguide optical grating is by ducting layer, and constitutes towards the grating layer of one side surface of liquid crystal layer positioned at ducting layer, and grating layer is contacted with liquid crystal layer；Positioned at the collimated light source of ducting layer side；The refractive index of liquid crystal layer changes under the drive signal control of display device between largest refractive index and minimum refractive index；And the refractive index of grating layer is more than or equal to the minimum refractive index of liquid crystal layer, and less than or equal to the largest refractive index of liquid crystal layer.
Description
Technical field
This utility model is related to display technology field, more particularly to a kind of display device.
Background technology
With the development of photoelectric technology and device, image shows that the screen for being no longer limited to two-dimensional space (2D) is put down
In face, the picture of three dimensions (3D) shows and is more and more applied to the aspects such as routine work, study and the amusement of people.
Wherein, become mode of three dimensional display one of realizing three dimensional display using light field Display Technique, due to light field three
Dimension shows the spatial character that can not only really reproduce three-dimensional scenic, and correctly can show mutual between different objects
Position relationship, has become study hotspot in recent years.
Utility model content
Embodiment of the present utility model provides a kind of display device, can pass through the change of the refractive index of control liquid crystal layer,
Amount of light in adjustment waveguide optical grating, to realize that GTG shows.
To reach above-mentioned purpose, embodiment of the present utility model is adopted the following technical scheme that：
On the one hand this utility model embodiment provides a kind of display device, including：The first underlay substrate for being oppositely arranged and
Second underlay substrate, and the liquid crystal layer between first underlay substrate and second underlay substrate, also include：Position
Waveguide optical grating between the liquid crystal layer and first underlay substrate, the waveguide optical grating is by ducting layer, and is located at described
Ducting layer is constituted towards the grating layer of one side surface of the liquid crystal layer, and the grating layer is contacted with the liquid crystal layer；Positioned at institute
State the collimated light source of ducting layer side；The refractive index of the liquid crystal layer the display device drive signal control under, most
It is big to change between refractive index and minimum refractive index；And the refractive index of the grating layer is more than or equal to the minimum folding of the liquid crystal layer
Rate is penetrated, and less than or equal to the largest refractive index of the liquid crystal layer.
Further, the refractive index of the grating layer is equal to the minimum refractive index of the liquid crystal layer, or the grating layer
Refractive index be equal to the liquid crystal layer largest refractive index.
Further, the grating layer includes：The raster unit of array arrangement, the raster unit include the first grating
Unit, the second grating subelement and the 3rd grating subelement, the first grating subelement are used for output towards human eye direction
First primitive color light, the second grating subelement are used for second primitive color light of the output towards human eye direction, the 3rd grating
Unit is used for third primary color light of the output towards human eye direction.
Further, the display device also includes pixel electrode and public electrode, the pixel electrode and described public
Electrode is located at the both sides of the liquid crystal layer.
Further, the display device also includes pixel electrode and public electrode, the pixel electrode and described public
Electrode is respectively positioned on the same side of the liquid crystal layer.
Further, the grating layer includes grizzly bar, and part grizzly bar connects to form pixel electrode, and part grizzly bar connects to be formed
Public electrode, forms the grizzly bar and the grizzly bar interval setting for forming the public electrode of the pixel electrode.
Further, the grating layer includes grizzly bar；The display device also includes public electrode, the portion of the grating layer
Divide or whole grizzly bars connect to form pixel electrode, the public electrode is located at the waveguide optical grating and first underlay substrate
Between；Or, the display device also includes pixel electrode, and some or all of grizzly bar of the grating layer connects to form public
Electrode, the pixel electrode are located between the waveguide optical grating and first underlay substrate.
Further, the liquid crystal molecule in the liquid crystal layer is nematic liquid crystal molecule or blue phase liquid crystal molecule.
Further, it is in the case where the liquid crystal molecule in the liquid crystal layer is nematic liquid crystal molecule, described to show dress
Put, the polaroid is located at the liquid crystal layer away from the side of the ducting layer.
Further, it is in the case where the liquid crystal molecule in the liquid crystal layer is nematic liquid crystal molecule, described to show dress
Put, the oriented layer is located at the both sides of the liquid crystal layer, and contacts with the liquid crystal layer.
A kind of display device of this utility model embodiment offer, the display device, including：The first substrate base being oppositely arranged
Plate and the second underlay substrate, and the liquid crystal layer between the first underlay substrate and the second underlay substrate, the refraction of liquid crystal layer
Rate changes under the drive signal control of display device between largest refractive index and minimum refractive index.The display device is also wrapped
Include：Waveguide optical grating between liquid crystal layer and the first underlay substrate, waveguide optical grating by ducting layer, positioned at ducting layer towards liquid crystal
The grating layer composition of one side surface of layer, in the light coupled into waveguide layer that the collimated light source positioned at ducting layer side is sent, and
And the light is exported by grating layer.
On this basis, as the refractive index of grating layer is more than or equal to the minimum refractive index of liquid crystal layer, and it is less than or waits
Contact with liquid crystal layer in the largest refractive index of liquid crystal layer, and grating layer, so, by driving the liquid crystal molecule in liquid crystal layer
Deflect, adjust the size of the refractive index of liquid crystal layer, in the case, when refractive index and the grating layer of adjustment liquid crystal layer
When refractive index is equal, the effect of grating layer is capped, and no light is exported from waveguide optical grating, is now dark-state；When adjustment liquid
When difference between the refractive index of the refractive index and grating layer of crystal layer is maximum, the effect of grating layer most substantially, light is from waveguide
The efficiency highest exported in grating, is now on state of.I.e. by the change of the refractive index of control liquid crystal layer, liquid crystal layer can be adjusted
Refractive index and the refractive index of grating layer between size of the difference, and then the amount of light purpose in waveguide optical grating can be controlled, from
And realize that different GTGs show.
Description of the drawings
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or accompanying drawing to be used is briefly described needed for description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise for not paying creative work
Under, can be with according to these other accompanying drawings of accompanying drawings acquisition.
A kind of structural representation of display device that Fig. 1 is provided for this utility model embodiment；
A kind of principle schematic of waveguide optical grating that Fig. 2 is provided for this utility model embodiment；
The structural representation of another kind of display device that Fig. 3 is provided for this utility model embodiment；
The structural representation of another display device that Fig. 4 is provided for this utility model embodiment；
The structural representation of another kind of display device that Fig. 5 a are provided for this utility model embodiment；
The structural representation of another display device that Fig. 5 b are provided for this utility model embodiment；
The structural representation of another kind of display device that Fig. 6 a are provided for this utility model embodiment；
The structural representation of another display device that Fig. 6 b are provided for this utility model embodiment；
The structural representation of another kind of display device that Fig. 7 is provided for this utility model embodiment；
A kind of structural representation of grating layer that Fig. 8 a are provided for this utility model embodiment；
The structural representation of another kind of grating layer that Fig. 8 b are provided for this utility model embodiment；
The structural representation of another display device that Fig. 9 is provided for this utility model embodiment；
The flow chart of the display packing for being applied to display device that Figure 10 is provided for this utility model embodiment.
Reference：
The first underlay substrates of 10-；101- pixel electrodes；102- public electrodes；The second underlay substrates of 20-；201- oriented layers；
202- polaroids；30- liquid crystal layers；40- waveguide optical gratings；401- ducting layers；402- grating layers；412- raster units；4121- first
Grating subelement；4122- the second grating subelements；The 3rd grating subelements of 4123-；50- collimated light sources；The first primary colors of 501-
Light；The second primitive color lights of 502-；503- third primary color light.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only this utility model a part of embodiment, rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of this utility model protection.
This utility model embodiment provides a kind of display device, as shown in figure 1, the display device includes：It is oppositely arranged
First underlay substrate 10 and the second underlay substrate 20, and the liquid between the first underlay substrate 10 and the second underlay substrate 20
Crystal layer 30, general, the first underlay substrate 10 and the second underlay substrate 20 adopt optical glass or resin material to constitute, thickness
Typically in 0.1mm～2mm, certain this utility model is not construed as limiting to this, specifically can be according to the design of product or technique bar
Part determines.
As shown in figure 1, the display device also includes：Waveguide optical grating between liquid crystal layer 30 and the first underlay substrate 10
40, waveguide optical grating 40 is by ducting layer 401, and constitutes towards the grating layer 402 of 30 1 side surface of liquid crystal layer positioned at ducting layer 401,
And grating layer 402 is contacted with liquid crystal layer 30；In addition, positioned at the collimated light source 50 of 401 side of ducting layer, can be by collimated light source 50
In the light coupled into waveguide layer 401 for sending, and the light is exported by grating layer 402.
On this basis, refractive index N of liquid crystal layer 30 display device drive signal control under, in largest refractive index
NmaxWith minimum refractive index NminBetween change, and the refractive index of grating layer 402 more than or equal to liquid crystal layer 30 minimum refractive index
Nmin, and less than or equal to the largest refractive index N of liquid crystal layer 30max, i.e. Nmin≤N≤Nmax, so, should be by driving liquid crystal
Liquid crystal molecule in layer deflects, and adjusts the size of the refractive index of liquid crystal layer, in the case, when the folding of adjustment liquid crystal layer
Penetrate rate it is equal with the refractive index of grating layer when, the effect of grating layer is capped, and no light is exported from waveguide optical grating, now for
Dark-state；When the difference between the refractive index and the refractive index of grating layer that adjust liquid crystal layer is maximum, the effect of grating layer it is most bright
Aobvious, the efficiency highest that light is exported from waveguide optical grating is now on state of.I.e. by the change of the refractive index of control liquid crystal layer,
Size of the difference between the refractive index of the refractive index and grating layer that can adjust liquid crystal layer, and then can control in waveguide optical grating
Amount of light purpose, so as to the GTG for realizing different shows.
Herein it should be noted that refractive index N of above-mentioned liquid crystal layer 30 is under the drive signal control of display device, most
Big refractive index NmaxWith minimum refractive index NminBetween change and refer to, the liquid crystal molecule in liquid crystal layer 30 occurs in the presence of electric field
Deflection, by driving the optical axis of liquid crystal molecule and from the angle between the polarization direction of the light of waveguide optical grating output, adjusting
The refractive index of the liquid crystal layer 30.Specifically, when the optical axis for driving liquid crystal molecule is parallel with polarization direction, the refractive index of liquid crystal layer
Maximum, when the optical axis for driving liquid crystal molecule is vertical with polarization direction, the refractive index of liquid crystal layer is minimum.General, liquid crystal layer 30
Thickness be arranged between 500nm～5 μm, can be for example 1 μm, this utility model is not construed as limiting to this, can be according to display
The type of device, parameter etc., are specifically set.
Herein also, it should be noted that the liquid crystal molecule in the display device in liquid crystal layer can be nematic liquid crystal,
Can be blue phase liquid crystal, can also be other liquid crystal, this utility model is not construed as limiting to this, be applied by adjustment as long as ensure that
The electric field intensity being added on liquid crystal layer 30, realizes the change of adjustment 30 refractive index of liquid crystal layer.In addition, in this utility model
Display device can be common liquid crystal indicator, for example liquid crystal display, LCD TV, DPF, mobile phone or flat board
Any product with display function such as computer or part, or nearly eye 3D display devices, can also be virtual reality
Display device, or augmented reality display device etc., this utility model is not construed as limiting to this.
Operation principle and related setting below to above-mentioned waveguide optical grating 40 does simple illustration.
The principle schematic of waveguide optical grating 40 as shown in Figure 2, wherein being that above dielectric layer is air dielectric, refractive index is
nc；Lower dielectric layer is transparency carrier, and refractive index is ns；Ducting layer refractive index is nfAs a example by illustrate, need to ensure ducting layer
Refractive index of 401 refractive index more than the refractive index and lower dielectric layer of upper dielectric layer, i.e. nfMore than ncAnd ns, to realize ripple
The normal function of guide grating.Outside light can be entered ducting layer 401, i.e. input coupling from coupled outside by the waveguide optical grating 40,
Light can also be passed through to be coupled out in grating layer 402 from ducting layer 401, i.e. output coupling, wherein, the ripple of certain first-order diffraction light
Size β of vector component along the guided mode direction of propagationmMeet βq=βmThe phase-matching condition of-qK (q=± 1, ± 2 ...), βm
For the propagation constant of m rank guided modes, βm=k0Nm, NmFor the effective refractive index of m rank guided modes, k0For constant；K is grating vector.
In addition, the ducting layer 401 can typically be transparent material, such as resin, glass, silicon nitride etc., and ensure that this is saturating
Refractive index of the refractive index of bright material at least above adjacent layer.In addition, in order to ensure to be arranged at 401 side of ducting layer
The thickness of the ducting layer 401 coupled in the ducting layer 401, can be arranged on by light that collimated light source 50 sends as far as possible
Between 100nm～100 μm.
For above-mentioned collimated light source 50 can be made up of the trichroism semiconductor laser chip of red, green, blue, also can by it is red,
Green, blue trichroism light emitting diode (Light Emitting Diode, abbreviation LED) chip is made after collimating, expanding, also
Can be made up after collimating, expanding of White-light LED chip, or by cathode fluorescent tube (the Cold Cathode of strip
Fluorescent Lamp, abbreviation CCFL) add some light collimating structures to make, this utility model is not construed as limiting to this.
Additionally, for positioned at the grating layer 402 on 401 surface of ducting layer, the grating layer 402 can also adopt transparent
Material, such as resin, silicon oxide etc., and grating dutycycle is typically occurred in the maximum diffraction rate of light for 0.5 when, but in reality
This value can also be deviateed in the product design of border, can according to the intensity for going out light, balance display floater diverse location brightness difference,
The factors such as process conditions, are specifically arranged, and this utility model is not construed as limiting to this.In addition, for grizzly bar in the grating layer 402
Height, be generally located between 100nm～1500nm, for example, 500nm can be arranged on, naturally it is also possible to according to actual need
Will, all sub-pixel units corresponding grizzly bar is highly set to into identical height, or will be different sub-pixel units corresponding
Grizzly bar is highly set to difference, and this utility model is not limited to this.
On this basis, in order to increase the difference between the refractive index of the refractive index and grating layer 402 of liquid crystal layer 30, this reality
With new preferred, refractive index N of above-mentioned grating layer 402 is equal to the minimum refractive index N of liquid crystal layer 30min, i.e. N=Nmin；Or,
Refractive index N of grating layer 402 is equal to the largest refractive index N of liquid crystal layer 30max, i.e. N=Nmax.So, enable to GTG
The adjusting range increase of display, and then cause the precision increase of GTG adjustment.
Specifically, when refractive index N of grating layer 402 is equal to the minimum refractive index N of liquid crystal layer 30min；Or, grating layer 402
Refractive index N be equal to liquid crystal layer 30 largest refractive index NmaxWhen, between the refractive index of the refractive index and grating layer of liquid crystal layer 30
Size of the difference is in 0～(Nmax-Nmin) between, i.e. 0～(N of the differencemax-Nmin) corresponding to GTG L0～L255.Compared to light
Refractive index N of gate layer 402 is located at minimum refractive index NminWith largest refractive index NmaxBetween, i.e. Nmin＜ N ＜ NmaxWhen, liquid crystal layer 30
Refractive index and the refractive index of grating layer between size of the difference in 0～(Nmax- N) or 0～(N-Nmin), and the difference 0～
(Nmax- N) or 0～(N-Nmin) corresponding to GTG L0～L255.
In sum, due to Nmin＜ N ＜ Nmax, it can be seen that (Nmax-Nmin) value be greater than (Nmax- N) and (N-
Nmin) value so that 0～(Nmax-Nmin) scope be more than 0～(Nmax- N) and 0～(N-Nmin), and then cause corresponding
The range of accommodation increase of GTG L0～L255, precision increase.
Herein it should be noted that when electric field is not applied, when the refractive index of grating layer 402 is equal to the refraction of liquid crystal layer 30
In the case of rate, it is normally black mode that the display device is dark-state, the i.e. display device；When electric field is not applied, grating layer 402
In the case that refractive index is maximum with the difference of the refractive index of liquid crystal layer 30, the display device is on state of, and the display device is Chang Bai
Pattern；This utility model is not limited to this, in application process, can carry out normally black mode or Chang Baimo according to actual needs
The setting of formula.
Further, as shown in figure 3, when above-mentioned grating layer 402 includes：The raster unit 412 of array arrangement, the grating list
Unit 412 includes the first grating subelement 4121, the second grating subelement 4122 and the 3rd grating subelement 4123, the first grating
Unit 4121 is used for first primitive color light 501 (such as HONGGUANG) of the output towards human eye direction；Second grating subelement 4122 is used for
Export the second primitive color light 502 (such as green glow) towards human eye direction；3rd grating subelement 4123 is used for output towards human eye
The third primary color light 503 (such as blue light) in direction, so, is sent by each raster unit 412 of the grating layer 402
Three kinds of primitive color lights converge to human eye such that it is able to realize that nearly eye shows, while using the display device of the waveguide optical grating, due to
Different grating subelements in each raster unit 412 can send the light of different primary colors and directly converge to human eye, so that
Obtain the color displays that the display device is capable of achieving display picture without the need for arranging color film layer.Of course for effectively guarantee emergent light
The purity and saturation of line color, it is also possible to arrange color film layer, this utility model is not construed as limiting to this.
In addition, for the display panels (Liquid Crystal Display, LCD) and organic electroluminescence of traditional structure
The emergent ray of light emitting display panel (Organic Light-Emitting Diode, OLED) is generally divergent rays, it is difficult to
Realize that the nearly eye of simple eye focusing shows；And emergent ray is enabled to using above-mentioned display device and is effectively converged such that it is able to
Show beneficial to the nearly eye for realizing simple eye focusing.
Herein it should be noted that the raster unit 412 of above-mentioned array arrangement can be with the pixel cell in display device
Correspond, for example, general, pixel cell includes the first sub-pixel unit (such as red sub-pixel unit), the second sub- picture
Plain unit (such as green sub-pixels unit), the 3rd sub-pixel unit (such as blue subpixels unit), in this utility model, light
Grid unit 412 includes the first grating subelement 4121, the second grating subelement 4122 and the 3rd grating subelement 4123, i.e. this reality
It is corresponding with the first sub-pixel unit with the first grating subelement 4121 in new, the second grating subelement 4122 and the second sub- picture
Plain unit correspondence, the 3rd grating subelement 4123 are corresponding with the 3rd sub-pixel unit.
Can also be that raster unit 412 is corresponding with the multiple pixel cells in display device, for example, in raster unit 412
Each grating subelement and display device in each column sub-pixel unit in string pixel cell correspond, i.e. the first grating
Subelement 4121 is corresponding with the first sub-pixel unit of string (such as red sub-pixel unit), the second grating subelement 4122 with
The second sub-pixel unit of string correspondence (such as green sub-pixels unit), the 3rd grating subelement 4123 and the 3rd sub-pix of string
Unit correspondence (such as blue subpixels unit).This utility model is not construed as limiting to this.
In addition, with the requirement more and more higher to display resolution, for high-resolution (Pixels Per Inch, PPI)
Display device demand it is also increasing, and the display device of high PPI is limited to processing technology, it is difficult to develop.For this reality
In new, as above-mentioned screen periods are less, generally 100nm～1 μm or so so, enables to the first grating
The width dimensions of subelement 4121, the second grating subelement 4122 and the 3rd grating subelement 4123 are less, so that first
Grating subelement 4121,4123 corresponding sub-pixel unit of the second grating subelement 4122 and the 3rd grating subelement size compared with
It is little, and then be conducive to the high-resolution realization of display device.
First primitive color light 501 of the output towards human eye direction, the second grating are used for the first grating subelement 4121 below
Subelement 4122 is used for second primitive color light 502 of the output towards human eye direction, and the 3rd grating subelement 4123 is used to export direction
The concrete principle of the third primary color light 503 in human eye direction is described further.
Specifically, as shown in Fig. 2 from the light of the output of waveguide optical grating 40, corresponding to wavelength of light λ with the output light
Light direction meets 2 π/λ N with the angle theta of panel plane normalm=π λ ncThe relation that matches of sin θ+q π Λ, wherein Λ are light
Grid cycle.Wherein ncFor air refraction.
On this basis, for nearly eye display device, it is fixed, i.e. each sub- picture that human eye obtains the position of image
The light direction of plain unit is fixed, i.e. equation 2 above π/λ Nm=2 π/λ ncIn sin θ+q2 π/Λ, each sub-pixel unit goes out
Light direction is fixed value with the angle theta of panel plane normal, and q and NmKnown parameters are, such that it is able to according to different every
The color (i.e. wavelength X) for going out light of individual sub-pixel unit, determines the grating of the corresponding grating layer of each sub-pixel unit 402
Periods lambda, i.e. can realize given color light (wavelength X) in assigned direction (with panel plane by arranging grating period A
The angle of normal is θ) on beam projecting.Following examples are so that the display device is nearly eye display device as an example, to this
Utility model is described further.
Existing display device generally comprises vertical field display device peace face field display device, wherein, perpendicualr field shows
Device, such as class ECB (Electrically Controlled Birefringence electrically conerolled birefringences) type, class VA
(Vertical Alignment) type；Plane field display device, such as class ADS (Advanced-Super Dimensional
Switching, senior super dimension field switch) type, IP like S (In Plane Switch, transverse electric field effect) type etc..
The display device in this utility model is shown in vertical field display device peace face field below by way of specific embodiment
The application of showing device is described further.
Embodiment one
As shown in figure 3, the display device is perpendicualr field (class ECB) display device, including pixel electrode 101 and public electrode
102, and pixel electrode 101 and public electrode 102 are located at the both sides of liquid crystal layer 30, put on 101 He of pixel electrode by adjustment
The voltage of public electrode 102, adjusts the difference between the refractive index and the refractive index of grating layer 402 of liquid crystal layer 30, realizes different
The adjustment of GTG.
For example, when pixel electrode 101 and public electrode 102 are in the case where voltage is not added with, the refractive index of liquid crystal layer 30 with
The refractive index of grating layer 402 is identical, and the effect of the grating layer 402 is capped, and no light is coupled out from waveguide optical grating 40,
It is now dark-state, correspondence GTG L0；When different voltages are applied in pixel electrode 101 and public electrode 102, liquid crystal layer 30
Refractive index has different differences, the different brightness between correspondence GTG L1～L255 from the refractive index of grating layer 402.Certainly
Can be the refractive index and grating layer of liquid crystal layer 30 in pixel electrode 101 and public electrode 102 in the case where voltage is not added with
402 refractive index is maximum, is now on state of, correspondence GTG L255, when applying in pixel electrode 101 and public electrode 102
During different voltage, refractive index and the refractive index of grating layer 402 of liquid crystal layer 30 have a different differences, and correspondence GTG L0～
Different brightness between L254.Pass through the change of the refractive index of pixel electrode 101 and the driving liquid crystal layer 30 of public electrode 102,
The amount of light that adjustment is coupled out from waveguide optical grating 40, to realize the adjustment of different GTGs.
On this basis, by arrange the first grating subelement 4121 in grating layer 402 in each raster unit 412,
Screen periods in second grating subelement 4122 and the 3rd grating subelement 4123, so that in each raster unit 412
The first primitive color light 501 that first grating subelement 4121 sends, the second primitive color light 502 that the second grating subelement 4122 sends,
The third primary color light 503 that 3rd grating subelement 4123 sends converges to human eye, so that the display device is without the need for arranging
Color film layer is capable of achieving nearly eye and shows.Of course for the purity and saturation that effectively ensure emergent ray color, it is also possible to
Color film layer is set, and this utility model is not construed as limiting to this.
Herein it should be noted that for above-mentioned vertical field pattern display device, pixel electrode 101 and public electrode 102
In the both sides of liquid crystal layer 30, can be with as shown in figure 3, pixel electrode 101 be located at waveguide optical grating 40 towards the first underlay substrate 10
Side, public electrode 102 are located at side of the waveguide optical grating 40 towards the second underlay substrate 20；Can be with as shown in figure 4, common electrical
Pole 102 is located at side of the liquid crystal layer 30 towards the first underlay substrate 10, and pixel electrode 101 is located at liquid crystal layer 30 towards the second substrate
The side of substrate 20；This utility model is not construed as limiting to this.
In addition, for the liquid crystal molecule in liquid crystal layer 30 in the vertical field pattern display device can be nematic liquid crystal point
Son, or blue phase liquid crystal molecule.Specifically, difference below to nematic liquid crystal molecule and blue phase liquid crystal molecule in a particular application
It is different to be described further.
In the case of using nematic liquid crystal molecule, the displaying principle and polarisation to the display device by way of example
The facilities of piece are described further.
Specifically, n is equal to the initial index of refraction of liquid crystal layer 30oAs a example by, when the refractive index and grating layer 402 of liquid crystal layer
Refractive index is equal, is noWhen, the effect of grating layer 402 is blanked, and no light is coupled out from waveguide optical grating 40, now
GTG is minimum, is L0 states；When the refractive index of liquid crystal layer 30 is neWith refractive index n of grating layer 402oWhen difference is maximum, grating layer
402 effect is most obvious, the efficiency highest that light is coupled out from waveguide optical grating 40, and now GTG is maximum, is L255 states；
When the refractive index of liquid crystal layer 30 is between both the above situation, it is other gray scale states.
In the mode that the realization shows, when the refractive index of grating layer 402 is equal or nearly equal to the refraction of liquid crystal layer 30
Rate noWhen, the polarization direction of the light that waveguide optical grating 40 is coupled out is parallel to the first underlay substrate 10 and perpendicular to grating layer
During 402 grizzly bar length direction, the change of above-mentioned refractive index can be just experienced, the light of other polarization directions will not be experienced above-mentioned
The change of refractive index, in the case, the display device is without the need for adding polaroid in light emission side or requires collimated light source 50
The light for going out is polarized light, you can realize normal display.And for the refractive index of grating layer 402 is located at the refraction of liquid crystal layer 30
Rate noAnd neBetween when, now the display device needs to add polaroid in light emission side or requires that the light that backlight sends is inclined
Shake light (adding one layer of polaroid in the 50 light source light emission side of collimated light source of side entering type), does not receive liquid crystal layer 30 to eliminate out light situation
The interference of the controlled polarized light of orientation deflection, to realize normal display, and the display pattern typically requires liquid crystal molecule
For positivity liquid crystal molecule.
In addition, in the case of using nematic liquid crystal molecule, in order to ensure liquid crystal molecule has phase in original state
Same ordered state, and horizontal deflection can be entered in the intended manner after applying an electric field, therefore, in liquid crystal layer 30
Liquid crystal molecule be nematic liquid crystal molecule in the case of, as shown in figure 4, the display device is also included positioned at 30 both sides of liquid crystal layer
And the oriented layer 201 contacted with liquid crystal layer 30, enable to nematic liquid crystal molecule initial shape in the presence of oriented layer 201
State is identical, it is ensured that liquid crystal molecule can be rotated under applied voltage in the manner described above, and is carried out partially according to predetermined angle
Turn, to realize the adjustment of 30 refractive index of liquid crystal layer.
Specifically, the oriented layer 201 may be located at liquid crystal layer 30 near the side of ducting layer 401；Can also be such as Fig. 4 institutes
Show, the oriented layer 201 is located at liquid crystal layer 30 away from the side of ducting layer 401, and this utility model is not limited to this.In order to avoid
When oriented layer 201 is located between grating layer 402 and liquid crystal layer 30, and impact is brought on the refractive index of liquid crystal layer 30, and then affected
Amount of light in waveguide optical grating, this utility model are preferred, and oriented layer 201 is arranged at away from the side of ducting layer 401.
General, above-mentioned oriented layer 201 is polyimides (PI) film, and the original state of liquid crystal molecule is parallel to display surface
Plate plane, can be along the direction deflection perpendicular to display floater plane after power-up.Special nematic phase liquid can certainly be adopted
Brilliant material, realizes the initial orientation of liquid crystal molecule, and does not use oriented layer 201 by adding some materials, this utility model pair
This is not construed as limiting.
In the case of using blue phase liquid crystal molecule, as blue phase liquid crystal molecule is not when electric field is applied, liquid crystal molecule
For isotropism, refractive index is identical in all directions, and two kinds of polarized light are identical by the refractive index of liquid crystal, are n；And applying
During added electric field, liquid crystal molecule is anisotropy, and ordinary refraction index is n1, very optical index is n2, now n1<n<n2.Here
In the case of, isotropic state can be selected to be L0 states (refractive index of grating layer is also n), anisotropic states are L255 shapes
State, now two kinds of polarized light can be coupled out, with higher light extraction efficiency.It is of course also possible to select anisotropy shape
State is that (refractive index of grating layer is n to L0 states1Or n2), isotropic state is L255 states, now needs incident illumination for polarization
Light, or add polaroid in light emission side, to realize normal display.
Additionally, above-mentioned display device can also select liquid crystal molecular orientation under the display pattern of class VA type, i.e. original state
It is that, perpendicular to the direction of display floater, after applying plane electric fields, it is parallel to display floater that liquid crystal molecular orientation is changed stepwise.
Below by taking nematic liquid crystal molecule as an example, explanation is further explained to the VA type display devices.For example, with liquid
The initial index of refraction of crystal layer 30 is equal to noAs a example by, when the refractive index of the refractive index and grating layer 402 of liquid crystal layer is equal, it is noWhen,
The effect of grating layer 402 is blanked, and no light is coupled out from waveguide optical grating 40, and now GTG is minimum, is L0 states；When
The refractive index of liquid crystal layer 30 is neWith refractive index n of grating layer 402oWhen difference is maximum, the effect of grating layer 402 is most obvious, light
The efficiency highest being coupled out from waveguide optical grating 40, now GTG is maximum, is L255 states；At the refractive index of liquid crystal layer 30
When between both the above situation, it is other gray scale states.
In the mode that the realization shows, when the refractive index of grating layer 402 is equal or nearly equal to the refraction of liquid crystal layer 30
Rate noWhen, the polarization direction of the light that waveguide optical grating 40 is coupled out is parallel to the first underlay substrate 10 and perpendicular to grating layer
During 402 grizzly bar length direction, the change of above-mentioned refractive index can be just experienced, the light of other polarization directions will not be experienced above-mentioned
The change of refractive index, in the case, the display device need not arrange polaroid；And for the refractive index of grating layer 402 is located at
Refractive index n of liquid crystal layer 30oAnd neBetween when, now the display device needs to add polaroid in light emission side or requires side entering type
Collimated light source is polarized light, is not orientated disturbing for the controlled polarized light of deflection by liquid crystal layer 30 to eliminate out light situation, with reality
It is now normal to show, and the display pattern typically requires that liquid crystal molecule is positivity liquid crystal molecule.
In addition, for the display pattern of the VA types, when using nematic liquid crystal molecule, in order to ensure liquid crystal molecule
There is identical ordered state in original state, and horizontal deflection can be entered in the intended manner after applying an electric field, therefore,
In the case of being nematic liquid crystal molecule in the liquid crystal molecule in liquid crystal layer 30, the display device is also included positioned at liquid crystal layer
30 both sides and the oriented layer 201 contacted with liquid crystal layer 30；Special Nematic phase liquid crystal material can certainly be adopted, by addition
Some materials realize the initial orientation of liquid crystal molecule, as long as the original state for enabling to the nematic liquid crystal molecule is identical i.e.
Can, it is ensured that liquid crystal molecule can be rotated under applied voltage in the manner described above, and enters horizontal deflection according to predetermined angle, with
Realize the adjustment of 30 refractive index of liquid crystal layer.
When blue phase liquid crystal molecule is adopted for the VA types display device, oriented layer 201 can be not provided with, concrete reason, with
And related displaying principle is referred in aforementioned class ECB type display device the explanation using blue phase liquid crystal molecule, no longer goes to live in the household of one's in-laws on getting married herein
State.
Embodiment two
If Fig. 5 a are to as shown in Figure 6 b, the display device includes pixel electrode 101 and public electrode 102, and pixel electrode
101 and public electrode 102 be respectively positioned on the same side of liquid crystal layer 30, in the case, the display device is plane field display device,
Wherein, Fig. 5 a and Fig. 5 b be class ADS type plane field display device, including different layer arrange strip shaped electric poles and plane-shape electrode；Fig. 6 a
It is IP like S type plane field display device with Fig. 6 b, including same layer and spaced strip shaped electric poles.The plane field display device leads to
102 applied voltage of the same side pixel electrode 101 and public electrode for being pointed to liquid crystal layer 30 is crossed, the liquid crystal in liquid crystal layer 30 is driven
Molecule is rotated in the plane for be close to parallel display panel, so as to adjust the refractive index of liquid crystal layer 30 and the refraction of grating layer 402
Difference between rate, realizes the adjustment of different GTGs.
For example, when pixel electrode 101 and public electrode 102 are in the case where voltage is not added with, the refractive index of liquid crystal layer 30 with
The refractive index of grating layer 402 is identical, and the effect of the grating layer 402 is capped, and no light is coupled out from waveguide optical grating 40,
It is now dark-state, correspondence GTG L0；When different voltages are applied in pixel electrode 101 and public electrode 102, liquid crystal layer 30
Refractive index has different differences, the different brightness between correspondence GTG L1～L255 from the refractive index of grating layer 402.Certainly
Can be the refractive index and grating layer of liquid crystal layer 30 in pixel electrode 101 and public electrode 102 in the case where voltage is not added with
402 refractive index is maximum, is now on state of, correspondence GTG L255, when applying in pixel electrode 101 and public electrode 102
During different voltage, refractive index and the refractive index of grating layer 402 of liquid crystal layer 30 have a different differences, and correspondence GTG L0～
Different brightness between L254.Pass through the change of the refractive index of pixel electrode 101 and the driving liquid crystal layer 30 of public electrode 102,
The amount of light that adjustment is coupled out from waveguide optical grating 40, to realize the adjustment of different GTGs.
With identical in embodiment one, in the plane field display device, it is also possible to by adjusting grating layer in waveguide optical grating 40
The first grating subelement 4121, the second grating subelement 4122 and the 3rd grating subelement in 402 in each raster unit 412
Screen periods in 4123, so that the first primitive color light that the first grating subelement 4121 in each raster unit 412 sends
501, the second primitive color light 502 that the second grating subelement 4122 sends, the third primary color light that the 3rd grating subelement 4123 sends
503 converge to human eye, realize that nearly eye shows.
In addition, following to pixel electrode in above-mentioned class ADS type plane field display device and IP like S type plane field display device
101 and the concrete condition of public electrode 102 be described further.
For class ADS type plane field display device, in pixel electrode 101 and public electrode 102, one includes strip shaped electric poles,
One is plane-shape electrode, specifically, can as shown in Figure 5 a, including the pixel electrode 101 and the common electrical of planar of strip shaped electric poles
Pole 102 is respectively positioned between waveguide optical grating 40 and the first underlay substrate 10；Can also as shown in Figure 5 b, including the pixel of strip shaped electric poles
Electrode 101 and planar public electrode 102 are respectively positioned between liquid crystal layer 30 and the second underlay substrate 20；Certainly, Fig. 5 a and Fig. 5 b be only
It is that strip shaped electric poles are included with pixel electrode 101, public electrode 102 is illustrating as a example by plane-shape electrode, or public
Electrode 102 includes strip shaped electric poles, and pixel electrode 101 is plane-shape electrode, as long as ensureing above-mentioned strip shaped electric poles relative to plane-shape electrode
Near liquid crystal layer 30, can realize that the liquid crystal molecule in driving liquid crystal layer 30 deflects.This utility model is not made to this
Limit.
For IPS type plane field display devices, pixel electrode 101 and public electrode 102 are same layer and spaced bar
Shape electrode, specifically, can as shown in Figure 6 a, spaced pixel electrode 101 is located at waveguide optical grating 40 with public electrode 102
Between the first underlay substrate 10；Can also as shown in Figure 6 b, spaced pixel electrode 101 and 102 equal position of public electrode
Between liquid crystal layer 30 and the second underlay substrate 20, this utility model is not construed as limiting to this.
On this basis, for the liquid crystal in liquid crystal layer 30 in above-mentioned class ADS type and IP like S type plane field display device point
Son can be nematic liquid crystal molecule, or blue phase liquid crystal molecule.Hereinafter nematic liquid crystal molecule and blue phase liquid crystal molecule are existed
Difference in concrete application is described further.
In the case of using nematic liquid crystal molecule, the display to such ADS type and IP like S type by way of example
The facilities of the displaying principle and polaroid of device are described further.
Specifically, n is equal to the initial index of refraction of liquid crystal layer 30oAs a example by, when the refractive index and grating layer 402 of liquid crystal layer
Refractive index is equal, is noWhen, the effect of grating layer 402 is blanked, and no light is coupled out from waveguide optical grating 40, now
GTG is minimum, is L0 states；When the refractive index of liquid crystal layer 30 is neWith refractive index n of grating layer 402oWhen difference is maximum, grating layer
402 effect is most obvious, the efficiency highest that light is coupled out from waveguide optical grating 40, and now GTG is maximum, is L255 states；
When the refractive index of liquid crystal layer 30 is between both the above situation, it is other gray scale states.
In the mode that the realization shows, the polarization direction of the light being coupled out due to waveguide optical grating 40 is in a first direction
The change of above-mentioned refractive index is experienced with second direction interior energy, wherein, first direction is polarization direction parallel to the first substrate
Substrate 10 and the length direction perpendicular to strip shaped electric poles, second direction are polarization direction parallel to the first underlay substrate 10 and flat
Row is in the length direction of strip shaped electric poles, so needing light emission side (such as upper table of the second underlay substrate 20 in liquid crystal layer 30
Face), or in 50 light source light emission side of collimated light source, one layer of polaroid of addition of side entering type, select a kind of polarized light (first party
To polarized light or second direction polarized light), to realize the adjustment to GTG.
In addition, in the case of using nematic liquid crystal molecule, in order to ensure liquid crystal molecule has phase in original state
Same ordered state, and horizontal deflection can be entered in the intended manner after applying an electric field, therefore, in liquid crystal layer 30
Liquid crystal molecule be nematic liquid crystal molecule in the case of, the display device also includes positioned at 30 both sides of liquid crystal layer and and liquid crystal layer
The oriented layers 201 of 30 contacts, it is identical to enable to nematic liquid crystal molecule original state in the presence of oriented layer 201, really
Protect liquid crystal molecule to be rotated under applied voltage in the manner described above, and enter horizontal deflection according to predetermined angle, to realize
The adjustment of 30 refractive index of liquid crystal layer, and liquid crystal molecule is positivity liquid crystal molecule and negative liquid crystal molecule under the display pattern.
In addition, by controlling the inceptive direction of liquid crystal molecule and the relativeness in polaroid analyzing direction, determining that display floater is Chang Bai
Pattern (inceptive direction of liquid crystal is consistent with polaroid analyzing direction) or normally black mode (inceptive direction of liquid crystal and polaroid analyzing
Direction is vertical).
Specifically, when above-mentioned class ADS type and IP like S type plane field display device adopt nematic liquid crystal molecule, in liquid
The oriented layer 201 for example, can be arranged by 30 both sides of crystal layer and the setting oriented layer 201 of oriented layer 201 contacted with liquid crystal layer 30
In liquid crystal layer 30 near the side of ducting layer 401, it is also possible to as shown in Figure 5 a, oriented layer 201 is arranged at into liquid crystal layer 30 and is deviated from
The side of ducting layer 401.It is of course also possible to use special Nematic phase liquid crystal material, realizes liquid crystal by adding some materials
The initial orientation of molecule, and oriented layer 201 is not used, this utility model is not construed as limiting to this.
Under for the display pattern of such ADS type and IP like S type, during using blue phase liquid crystal molecule, due to blue phase liquid crystal point
The sub feature of itself, when electric field is not applied, liquid crystal molecule is isotropism to blue phase liquid crystal molecule, in all directions refractive index
Identical, two kinds of polarized light are identical by the refractive index of liquid crystal, are n；And when electric field is applied, liquid crystal molecule is anisotropy,
Ordinary refraction index is n1, very optical index is n2, n1<n<n2, in this case, it is possible to select isotropic state to be L0
State (refractive index of grating layer is also n), anisotropic states are L255 states, and now two kinds of polarized light can be coupled out
Come, with higher light extraction efficiency, and device does not need incident illumination for polarized light, or be capable of achieving in light emission side addition polaroid
It is normal to show.It is of course also possible to (refractive index of grating layer is n for L0 states to select anisotropic states1Or n2), isotropism
State is L255 states, now needs incident illumination to be polarized light, or adds polaroid in light emission side, to realize normal display.
When class ADS type and IP like S type plane field display device adopt blue phase liquid crystal molecule, then oriented layer need not be set
201, setting of the concrete reason with oriented layer 201 in embodiment one, due to being illustrated in embodiment one, is no longer gone to live in the household of one's in-laws on getting married herein
State.
Embodiment three
As grating layer 402 is mainly made up of grizzly bar, while therefore, it can for the grating layer 402 to be used as grating, also make
For pixel electrode 101, and/or, public electrode 102, now the grating layer 102 is the composite construction of grating and electrode, and is adopted
With the grating electrode composite construction, due to screen periods it is little so that the electric field density that grating electrode composite construction is formed is bigger, from
And be easy to the control to liquid crystal layer 30, so, can reduce liquid crystal cell it is thick while so that the display device it is corresponding
Speed is lifted, and refreshing frequency is improved.
Optionally, below by way of grating is used as to above-mentioned grating layer 402 while, also as pixel electrode 101, and/or,
Public electrode 102 is described further.
For example, as shown in fig. 7, grating layer 402 includes pixel electrode 101 and public electrode 102, specifically, grating simultaneously
In layer 402, part grizzly bar connects to form pixel electrode 101, and part grizzly bar connects to form public electrode 102, forms pixel electrode
101 grizzly bar and the grizzly bar interval setting for forming public electrode 102, in the case, the display device is IP like S type flat field
Display device.
Wherein, part grizzly bar connects to form pixel electrode 101, and part grizzly bar connects to form public electrode 102, can be such as figure
Shown in 8a, in grating layer 402, adjacent grizzly bar belongs to the bar shaped sub-electrode of pixel electrode 101 and public electrode 102；Can also
As shown in Figure 8 b, only can also include between the bar shaped sub-electrode of the bar shaped sub-electrode and public electrode 102 of pixel electrode 101
Grizzly bar as grating (in Fig. 8 b shown in dotted line), this utility model is not construed as limiting to this.
Again for example, it is as shown in figure 9, some or all of grizzly bar of grating layer 402 connects to form pixel electrode 101, public
Electrode 102 is located between waveguide optical grating 40 and the first underlay substrate 10.Or, some or all of grizzly bar of grating layer 402 connects
Connect to form public electrode 102, pixel electrode 101 is located between waveguide optical grating 40 and the first underlay substrate 10, and accompanying drawing may be referred to
Fig. 9, no longer accompanying drawing is repeated herein.In the case, the display device is class ADS type plane field display device.
In addition, liquid crystal molecule in the GTG adjustment of above-mentioned class ADS type and IP like S type plane field display device, liquid crystal layer 30
Setting of selection, associated orientation layer 201 and polaroid 202 of nematic liquid crystal molecule and blue phase liquid crystal molecule etc., Ke Yican
The corresponding facilities of class ADS type and IP like S type plane field display device in embodiment two are examined, here is omitted.
In addition, at present, existing display device, especially virtually/augmented reality display device and transparent display,
It is to be realized using the LCD and OLED of traditional structure, it is necessary to use polaroid, as at least half of light can be filtered by polaroid
Fall, and display floater can not be passed through, therefore existing display device cannot accomplish the highly transparent of display floater, so as to develop
Ring the transmitance of panel rear light and the spectrum of transmission.Comprehensive this utility model embodiment one, embodiment two, embodiment
Three, it can be seen that the display device in this utility model, for class ECB type, class VA type and in the display using blue phase liquid crystal
In device, polaroid can not be used, for display device of the prior art must be using polaroid, this practicality is new
The display of type can greatly improve the transmitance of light, so that the transparency of display floater is improved, while improve the profit of light
With rate.
This utility model embodiment also provides a kind of display packing for being applied to aforementioned any one display device, such as Figure 10 institutes
Show, the display packing includes：
Pixel in step S101, progressive scan display device.
Step S102, when scan one-row pixels when, to the row pixel liquid crystal layer according to each pixel gray value apply
Electric field so that the refractive index of the liquid crystal layer of pixel between minimum refractive index and the liquid crystal layer of liquid crystal layer largest refractive index it
Between.That is, by the change of the refractive index of control liquid crystal layer, can adjust between the refractive index of refractive index and grating layer of liquid crystal layer
Size of the difference, and then the amount of light purpose in waveguide optical grating can be controlled, so as to the GTG for realizing different shows.
The above, specific embodiment only of the present utility model, but protection domain of the present utility model do not limit to
In this, any those familiar with the art can readily occur in change in the technical scope that this utility model is disclosed
Or replace, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with the power
The protection domain that profit is required is defined.
Claims (10)
1. a kind of display device, including：The first underlay substrate being oppositely arranged and the second underlay substrate, and it is located at described first
Liquid crystal layer between underlay substrate and second underlay substrate, it is characterised in that also include：
Waveguide optical grating between the liquid crystal layer and first underlay substrate, the waveguide optical grating is by ducting layer, and position
Constitute towards the grating layer of one side surface of the liquid crystal layer in the ducting layer, and the grating layer is contacted with the liquid crystal layer；
Positioned at the collimated light source of the ducting layer side；
The refractive index of the liquid crystal layer the display device drive signal control under, in largest refractive index and minimum refractive index
Between change；And the refractive index of the grating layer is more than or equal to the minimum refractive index of the liquid crystal layer, and it is less than or equal to institute
State the largest refractive index of liquid crystal layer.
2. display device according to claim 1, it is characterised in that the refractive index of the grating layer is equal to the liquid crystal layer
Minimum refractive index, or the refractive index of the grating layer is equal to the largest refractive index of the liquid crystal layer.
3. display device according to claim 1, it is characterised in that the grating layer includes：The raster unit of array arrangement,
The raster unit includes the first grating subelement, the second grating subelement and the 3rd grating subelement, the first grating
Unit is used for first primitive color light of the output towards human eye direction, and the second grating subelement is used for output towards human eye direction
Second primitive color light, the 3rd grating subelement are used for third primary color light of the output towards human eye direction.
4. display device according to claim 1, it is characterised in that the display device also includes pixel electrode and common electrical
Pole, the pixel electrode and the public electrode are located at the both sides of the liquid crystal layer.
5. display device according to claim 1, it is characterised in that the display device also includes pixel electrode and common electrical
Pole, the pixel electrode and the public electrode are respectively positioned on the same side of the liquid crystal layer.
6. display device according to claim 1, it is characterised in that the grating layer includes grizzly bar, part grizzly bar connection shape
Pixel electrode, part grizzly bar connect to form public electrode, form the grizzly bar of the pixel electrode and form the public electrode
Grizzly bar interval setting.
7. display device according to claim 1, it is characterised in that the grating layer includes grizzly bar；
The display device also includes public electrode, and some or all of grizzly bar of the grating layer connects to form pixel electrode,
The public electrode is located between the waveguide optical grating and first underlay substrate；
Or, the display device also includes pixel electrode, and some or all of grizzly bar of the grating layer connects to form public
Electrode, the pixel electrode are located between the waveguide optical grating and first underlay substrate.
8. the display device according to any one of claim 1-7, it is characterised in that the liquid crystal molecule in the liquid crystal layer be to
Row phase liquid crystal molecule or blue phase liquid crystal molecule.
9. the display device according to any one of claim 5-7, it is characterised in that the liquid crystal molecule in the liquid crystal layer is
In the case of nematic liquid crystal molecule, the display device also includes polaroid, and the polaroid deviates from positioned at the liquid crystal layer
The side of the ducting layer.
10. display device according to claim 1, it is characterised in that the liquid crystal molecule in the liquid crystal layer is nematic phase
In the case of liquid crystal molecule, the display device also include oriented layer, the oriented layer be located at the liquid crystal layer both sides, and with
The liquid crystal layer contact.
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| CN106292051A (en) * | 2016-10-21 | 2017-01-04 | 京东方科技集团股份有限公司 | A kind of display device and display packing thereof |
| CN107167925A (en) * | 2017-06-08 | 2017-09-15 | 东南大学 | A kind of field sequence three dimensional display of holographic grating backing structure |
| CN109061948A (en) * | 2018-10-30 | 2018-12-21 | 京东方科技集团股份有限公司 | Optical substrate and display device |
| CN109683388A (en) * | 2019-03-11 | 2019-04-26 | 京东方科技集团股份有限公司 | Transparent liquid crystal display panel and its driving method, and the transparent liquid crystal display including it |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106292051A (en) * | 2016-10-21 | 2017-01-04 | 京东方科技集团股份有限公司 | A kind of display device and display packing thereof |
| WO2018072508A1 (en) * | 2016-10-21 | 2018-04-26 | 京东方科技集团股份有限公司 | Display device and display method thereof |
| US11126022B2 (en) | 2016-10-21 | 2021-09-21 | Boe Technology Group Co., Ltd. | Display device and display method thereof |
| CN107167925A (en) * | 2017-06-08 | 2017-09-15 | 东南大学 | A kind of field sequence three dimensional display of holographic grating backing structure |
| CN109061948A (en) * | 2018-10-30 | 2018-12-21 | 京东方科技集团股份有限公司 | Optical substrate and display device |
| CN109061948B (en) * | 2018-10-30 | 2021-02-12 | 京东方科技集团股份有限公司 | Optical substrate and display device |
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| US11360365B2 (en) * | 2018-11-16 | 2022-06-14 | Boe Technology Group Co., Ltd. | Light modulation device and single-channel spectrum detection system |
| CN109683388A (en) * | 2019-03-11 | 2019-04-26 | 京东方科技集团股份有限公司 | Transparent liquid crystal display panel and its driving method, and the transparent liquid crystal display including it |
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