CN205318033U - Double vision bore hole 3D display device and liquid crystal disply device - Google Patents

Abstract

The application discloses double vision bore hole 3D display device and liquid crystal disply device for make double vision bore hole 3D display device's thickness greatly reduced, the structure is simplified, thus simple process, cost reduction, and the user needn't wear glasses. The utility model provides double vision bore hole 3D display device includes: the thin film transistor TFT base plate sets up diffraction grating, setting on the TFT base plate are in liquid crystal layer, setting on the diffraction grating are in inclined to one side vibration -damping sheet on the liquid crystal layer, and to TFT base plate emitted light's light source, wherein, diffraction grating forms on the TFT base plate, each pixel on the TFT base plate corresponds diffraction grating two kinds of last grating patterns, the shading strip of these two kinds of grating patterns becomes to predetermine the contained angle.

Description

Look bore hole 3D display device and liquid crystal indicator for a kind of pair

Technical field

The application relates to display technology field, particularly relates to a kind of pair and looks bore hole 3D display device and liquid crystal indicator.

Background technology

Along with the raising day by day of people's living standard, the experience requirements of display device is also increased severely day by day. Wherein the realization of display device " two visual function " has become the focus in field. When " two depending on " refer to different viewing person simultaneously from two different angles viewing indicating meters, it can be seen that different displaying contents. Two have three big application directions depending on technology, comprises vehicle-mounted, advertisement machine, anti-peeps display. Such as, in the process of moving, officer checks road conditions by Vehicular display device to vehicle, and the passenger on co-driver can by same Vehicular display device viewing film; The billboard of public place watches different ad content from different angles, it is possible to improve the utilising efficiency of billboard; When people have in public place office, when not wishing that bystander knows its action again, two is just prevent that peeping secrecy provides convenience depending on technology.

But, look bore hole 3D display device for of the prior art pair, or device is too complicated, thickness is thicker, and equipment is too heavy, and technique is difficult to realize, cost height; Needing different viewing person to wear different glasses, limit application scenario, user uses trouble, and experience sense is not good; Maybe can only carry out 2D display again, bore hole 3D display cannot be realized.

Practical novel content

The embodiment of the present application provides a kind of pair and looks bore hole 3D display device and liquid crystal indicator, and with so that two thickness depending on bore hole 3D display device reduces greatly, structure simplifies, thus technique is simple, cost reduces, and user need not wearing spectacles.

The one that the embodiment of the present application provides is two to be comprised depending on bore hole 3D display device:

Thin film transistor TFT substrate, is arranged on the diffraction grating on described TFT substrate, is arranged on the liquid crystal layer on described diffraction grating, is arranged on the polaroid on described liquid crystal layer, and launches the light source of light to described TFT substrate;Wherein, described diffraction grating is formed in described TFT substrate, and two kinds of grating patterns on the corresponding described diffraction grating of each pixel cell in described TFT substrate, the shading strip of these two kinds of grating patterns becomes to preset angle.

Wherein, described preset value can be decided according to the actual requirements, and its concrete value is not restricted by the embodiment of the present application, as long as there is angle.

The two of the embodiment of the present application offer look bore hole 3D display device, owing to eliminating lower polaroid and color membrane substrates, achieved by the diffraction grating increased and thinner there is two device looking bore hole 3D display function, compared to existing technology, not only thickness reduces greatly compared to general liquid crystal display device, and can realize that bore hole 3D is two looks display, any peripheral equipment is worn without the need to experiencer, lighter, structure is more simple, and technique simplifies, cost-saving, and not by the restriction of field of employment, be of value to two further genralrlization looking bore hole 3D display device and use.

Goodly, described TFT substrate is TFT glass substrate.

Goodly, described light source is the light source launching collimation light.

Goodly, described diffraction grating is sine phase grating or blazed grating.

Goodly, when described diffraction grating is sine phase grating, if its angle of inclination is θ_G, grating constant is Λ, and grating length is L, and thickness is d, and so its complex amplitude projection coefficient is:

$t\left(r_q\right)=\[\underset{q=\mathrm{\∞}}{\overset{\mathrm{\∞}}{\Σ}}{J}_q\left(v\right)\exp \left(i2{\mathrm{\πqur}}_q\right)\]\·rect\left(\frac{r_q}{L}\right)$

Wherein, q represents the order of diffration time of diffraction grating; J_qRepresent q rank first kind Bessel's function; U=1/ Λ, represents the spatial frequency of grating; r_q=(α_q,β_q,γ_q) represent emergent light direction cosine; The intensity of emergent light is modulated by v=2 π Δ nd/ λ, and Δ n is grating refractive index, and λ is wavelength.

Goodly, when described diffraction grating is sine phase grating, if the direction cosine of the incident light of this sine phase grating are (α, β, γ), then the outgoing direction of the emergent light of this sine phase grating is (α_q,β_q,γ_q), and meet following relation:

$\left\{\begin{array}{c}{\mathrm{\α}}_q=\mathrm{\α}+q\frac{\mathrm{\λ}}{\mathrm{\Λ}}{\mathrm{cos\θ}}_G\\ {\mathrm{\β}}_q=\mathrm{\β}+q\frac{\mathrm{\λ}}{\mathrm{\Λ}}{\mathrm{sin\θ}}_G\\ {\mathrm{\γ}}_q={(1-{\mathrm{\α}}_q^2-{\mathrm{\β}}_q^2)}^{1/2}\end{array}\right..$

Goodly, in described TFT substrate two kinds of grating patterns that each pixel cell is corresponding shading strip between angle entirely not identical.

Goodly, angle between the shading strip of two kinds of grating patterns that the adjacent pixel cell in described TFT substrate is corresponding is different.

Goodly, described TFT substrate comprises twisted nematic (TwistedNematic, TN), the electrode structure of plane conversion (In-PlaneSwitching, IPS), vertical orientation (VerticalAlignment, VA) display format.

A kind of liquid crystal indicator that the embodiment of the present application provides, comprises the described device that the embodiment of the present application provides.

Accompanying drawing explanation

Two structural representations looking bore hole 3D display device that Fig. 1 provides for the embodiment of the present application;

Two schematic diagram looking the two visual function of bore hole 3D display device realization that Fig. 2 provides for the embodiment of the present application;

Fig. 3 is the pattern schematic diagram of diffraction grating corresponding to the pixel that the embodiment of the present application provides;

The global pattern schematic diagram of the diffraction grating that Fig. 4 provides for the embodiment of the present application;

Two schematic diagram looking the two visual function of bore hole 3D display device realization that Fig. 5 provides for the embodiment of the present application;

Two bore hole 3D display devices of looking that Fig. 6 provides for the embodiment of the present application realize the colored schematic diagram shown;

Two schematic diagram realizing bore hole 3D display depending on bore hole 3D display device that Fig. 7 provides for the embodiment of the present application.

Embodiment

The embodiment of the present application provides a kind of pair and looks bore hole 3D display device and liquid crystal indicator, and with so that two thickness depending on bore hole 3D display device reduces greatly, structure simplifies, thus technique is simple, cost reduces, and user need not wearing spectacles.

The embodiment of the present application provides the two of a kind of slimming to look bore hole 3D display device, and see Fig. 1, described device is formed primarily of thin film transistor (ThinFilmTransistor, TFT) substrate 1, diffraction grating 2, liquid crystal layer 3, polaroid 4 and light source 5; Wherein, compared with conventional liquid crystal display device, described polaroid 4 can be understood as upper polarizer, but the embodiment of the present application provides the two of a kind of slimming to look bore hole 3D display device, without lower polaroid and color membrane substrates, therefore makes display device more frivolous; Further, see Fig. 2, the interpolation of described diffraction grating 2 can realize two visual functions of bore hole 3D display device.

Wherein, light source 5 incides the incident light of TFT substrate 1 for collimation light, and namely light emission direction is certain, does not have the light of multiple directions, such as, can be polarized light. The incident light that this light source 5 sends does not change polarization direction after TFT substrate 1, diffraction grating 2 outgoing, and therefore, the embodiment of the present application provides the two of slimming to look bore hole 3D display device without the need to lower polaroid, namely only needs a polaroid.

The two of the slimming that the embodiment of the present application provides look the TFT substrate in bore hole 3D display device, it can be such as TFT glass substrate, TFT glass substrate can serve as the effect of light guiding plate, see Fig. 1 or Fig. 2, the part incident light of light source 5 is in TFT glass substrate 1 upper surface outgoing and near normal injects diffraction grating 2; Another part incident light is totally reflected in TFT glass substrate 1, and finally TFT glass substrate 1 upper surface outgoing and near normal injects diffraction grating 2; This structure makes the approximate evenly vertical outgoing of the emergent light of TFT glass substrate upper surface, therefore improves luminous efficiency, compared with prior art, eliminates back light module unit structure, therefore not only reduces two thickness looking bore hole 3D display device, decrease cost.

The two of the slimming that the embodiment of the present application provides are formed in TFT substrate 1 depending on the diffraction grating 2 in bore hole 3D display device, and each pixel cell in TFT substrate 1 comprises two kinds of grating patterns, as shown in Figure 3. Between the shading strip of upper and lower two kinds of grating patterns in a certain angle, see Fig. 3, the shading strip 22 of the shading strip of upper grating 21 and lower grating exists presets angle theta, and the size of this angle can be decided according to the actual requirements, and is not construed as limiting in the embodiment of the present application. In TFT substrate 1, the pattern of the diffraction grating of whole display area is arranged as shown in Figure 4. The diffraction grating of this structure makes light after whole pair is looked bore hole 3D display device, in two angle outgoing, makes viewing person can watch different display frame two different angles, as shown in Figure 5.

Effect principles and methods about diffraction grating is as follows:

Such as, diffraction grating is sine phase grating, if its angle of inclination is θ_G, grating constant is Λ, and grating length is L, and thickness is d, so its complex amplitude projection coefficient t (r_q) for below shown in formula one:

$t\left(r_q\right)=\[\underset{q=-\mathrm{\∞}}{\overset{\mathrm{\∞}}{\Σ}}{J}_q\left(v\right)\exp \left(i2{\mathrm{\πqur}}_q\right)\]\·rect\left(\frac{r_q}{L}\right)$ Formula one

Wherein, q represents the order of diffration time of diffraction grating; J_qRepresent q rank first kind Bessel's function; U=1/ Λ, represents the spatial frequency of grating; r_q=(α_q,β_q,γ_q) represent emergent light direction cosine; The intensity of emergent light is modulated by v=2 π Δ nd/ λ, and Δ n is grating refractive index, and λ is wavelength.

It thus is seen that sine phase grating can modulate the phase place of its incident light, such as direction cosine be the incident light of (α, β, γ) after sine phase grating, its outgoing direction turns into (α_q,β_q,γ_q), there is between them the relation shown in following formula two:

$\left\{\begin{array}{c}{\mathrm{\α}}_q=\mathrm{\α}+q\frac{\mathrm{\λ}}{\mathrm{\Λ}}{\mathrm{cos\θ}}_G\\ {\mathrm{\β}}_q=\mathrm{\β}+q\frac{\mathrm{\λ}}{\mathrm{\Λ}}{\mathrm{sin\θ}}_G\\ {\mathrm{\γ}}_q={(1-{\mathrm{\α}}_q^2-{\mathrm{\β}}_q^2)}^{1/2}\end{array}\right.$ Formula two

Therefore, the embodiment of the present application etches in each pixel two at an angle kind grating, it is possible to make light be two kinds of angle outgoing and inject people's eye, as shown in Figure 5, and do not lose the resolving power of arbitrary angle.Wherein, the angle of the upper grating that different pixels is corresponding and lower grating can be identical or different.

From formula two, the shooting angle of light is relevant to wavelength X, owing to the wavelength of red (R), green (G), indigo plant (B) three coloured light is different, the light that light source sends is after diffraction grating, can there is fine difference in the angle of the light of different colours, reasonably adjust grating parameter so that it is forms effect as shown in Figure 6, therefore the two of the embodiment of the present application offer do not have color membrane structure depending on bore hole 3D display device, can realize colored display yet.

Diffraction theory according to light, the diffraction pattern through grating is light and dark striped, therefore can realize bore hole 3D display, as shown in Figure 7. Black striped and luminous energy be 0 part be equivalent to the grating of tradition bore hole 3D display device, it is possible to the displaying contents making adjacent two pixels is only received by the left eye of viewing person and right eye respectively, forms left view and right view; When the picture that left and right view shows exists minor differences, viewing person just can experience the 3D effect that there is the depth of field.

It should be noted that, in the embodiment of the present application, the grating pattern arrangement in each pixel is not limit, as long as shape is at a certain angle between the shading strip of upper grating and lower grating two kinds of gratings, makes emergent light be two kinds of angle outgoing; (arrangement between pixel and pixel is not limit) in addition, the electrode structure of TFT substrate is not also limit, the such as electrode structure of TN, IPS, VA display format.

A kind of liquid crystal indicator that the embodiment of the present application provides, what comprise that the embodiment of the present application provides described two looks bore hole 3D display device.

In sum, the two of the embodiment of the present application offer look bore hole 3D display device and liquid-crystal display, owing to eliminating lower polaroid and color membrane substrates, achieved by the diffraction grating increased and thinner there is two device looking bore hole 3D display function, compared to existing technology, not only thickness reduces greatly compared to general liquid crystal display device, and can realize that bore hole 3D is two looks display, any peripheral equipment is worn without the need to experiencer, lighter, structure is simpler, technique simplifies, cost-saving, and not by the restriction of field of employment, it is of value to two further genralrlization looking bore hole 3D display device to use.

Obviously, the application can be carried out various change and modification and not depart from the spirit and scope of the application by the technician of this area. Like this, if these amendments of the application and modification belong within the scope of the application's claim and equivalent technologies thereof, then the application also is intended to comprise these change and modification.

Claims (10)

1. look bore hole 3D display device for one kind pair, it is characterised in that, comprising:

Thin film transistor TFT substrate, is arranged on the diffraction grating on described TFT substrate, is arranged on the liquid crystal layer on described diffraction grating, is arranged on the polaroid on described liquid crystal layer, and launches the light source of light to described TFT substrate; Wherein, described diffraction grating is formed in described TFT substrate, and two kinds of grating patterns on the corresponding described diffraction grating of each pixel cell in described TFT substrate, the shading strip of these two kinds of grating patterns becomes to preset angle.

2. device according to claim 1, it is characterised in that, described TFT substrate is TFT glass substrate.

3. device according to claim 1, it is characterised in that, described light source is the light source launching collimation light.

4. device according to claim 1, it is characterised in that, described diffraction grating is sine phase grating or blazed grating.

5. device according to claim 4, it is characterised in that, when described diffraction grating is sine phase grating, if its angle of inclination is θ_G, grating constant is Λ, and grating length is L, and thickness is d, and so its complex amplitude projection coefficient is:

$t\left(r_q\right)=\[\underset{q=-\mathrm{\∞}}{\overset{\mathrm{\∞}}{\Σ}}{J}_q\left(v\right)\exp \left(i2{\mathrm{\πqur}}_q\right)\]\·rect\left(\frac{r_q}{L}\right)$

Wherein, q represents the order of diffration time of diffraction grating;J_qRepresent q rank first kind Bessel's function; U=1/ Λ, represents the spatial frequency of grating; r_q=(α_q,β_q,γ_q) represent emergent light direction cosine; The intensity of emergent light is modulated by v=2 π Δ nd/ λ, and Δ n is grating refractive index, and λ is wavelength.

6. device according to claim 5, it is characterised in that, when described diffraction grating is sine phase grating, if the direction cosine of the incident light of this sine phase grating are (α, β, γ), then the outgoing direction of the emergent light of this sine phase grating is (α_q,β_q,γ_q), and meet following relation:

$\left\{\begin{array}{c}{\mathrm{\α}}_q=\mathrm{\α}+q\frac{\mathrm{\λ}}{\mathrm{\Λ}}{\mathrm{cos\θ}}_G\\ {\mathrm{\β}}_q=\mathrm{\β}+q\frac{\mathrm{\λ}}{\mathrm{\Λ}}{\mathrm{sin\θ}}_G\\ {\mathrm{\γ}}_q={(1-{\mathrm{\α}}_q^2-{\mathrm{\β}}_q^2)}^{1/2}\end{array}\right..$

7. device according to claim 1, it is characterised in that, in described TFT substrate, angle between the shading strip of two kinds of grating patterns that each pixel cell is corresponding is entirely not identical.

8. device according to claim 1, it is characterised in that, the angle between the shading strip of two kinds of grating patterns that the adjacent pixel cell in described TFT substrate is corresponding is different.

9. device according to claim 1, it is characterised in that, described TFT substrate comprises the electrode structure of twisted nematic TN, plane conversion IPS, vertical orientation VA display format.

10. a liquid crystal indicator, it is characterised in that, comprise the device described in the arbitrary claim of claim 1～9.