CN102681195A - Polarized light transformational structure and display device - Google Patents
Polarized light transformational structure and display device Download PDFInfo
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- CN102681195A CN102681195A CN2011103591847A CN201110359184A CN102681195A CN 102681195 A CN102681195 A CN 102681195A CN 2011103591847 A CN2011103591847 A CN 2011103591847A CN 201110359184 A CN201110359184 A CN 201110359184A CN 102681195 A CN102681195 A CN 102681195A
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- 230000010287 polarization Effects 0.000 claims abstract description 39
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- 238000004519 manufacturing process Methods 0.000 abstract 1
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- 238000000034 method Methods 0.000 description 4
- 239000000969 carrier Substances 0.000 description 2
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Abstract
The invention discloses a polarized light transformational structure and a display device, relating to the technical field of automatic three-dimensional display. The polarized light transformational structure is a blue phase liquid crystal box driven by a transverse electric field and is used for maintaining the polarization direction of the incident linear polarized light or changing the polarization direction by 90 degrees for emergence. The polarized light transformational structure and the display device can realize 2D (two-dimensional)/3D (three-dimensional) mode transformation. Since the blue phase liquid crystal box driven by the transverse electric field is adopted for the polarized light transformational structure, the display effect is improved, the manufacturing process of the device is simplified, and the response time of 2D/3D transformation is shortened.
Description
Technical field
The present invention relates to automatic stereo display technique field, relate in particular to a kind of polarized light transformational structure and comprise the 2D/3D convertible automatic stereo display device of this structure.
Background technology
The automatic stereo demonstration is meant utilization optics, microelectric technique, computer technology etc.; When the three-dimensional right and left eyes image that two dimension is obtained on (2D) display plane; Show with three-dimensional (3D) three-dimensional form, promptly come the parallax of manufacturer's right and left eyes, send to two width of cloth images of parallax to images of left and right eyes respectively through artificial means; Make brain after having obtained the different images that right and left eyes sees, produce the sensation of observing true 3D object.The automatic stereo display technique is widely used, and can improve the reproduction amount of visual information greatly, therefore, becomes a focus of display technique area research on the our times.
Autostereoscopic display apparatus generally has two kinds of forms: slit grating formula and microlens array formula.The microlens array autostereoscopic display apparatus comprises display panel and the microlens array that is installed in display panel the place ahead, through this microlens array, makes people's right and left eyes produce parallax, and left eye is seen the left eye picture, and right eye is seen the right eye picture, thereby realizes that 3D shows.。
Conventional microlens formula 3 d display device can't be realized the conversion of 2D/3D, has brought great inconvenience to use.To this demand, a lot of new researchs have appearred.Such as: for lens surface plating conductive layer,, add a transparent plate electrode again and make liquid crystal cell, thereby reach the conversion of 2D/3D through the propagation that the control liquid crystal director changes light as an electrode.But add very difficulty of plating conductive layer on the microlens array surface; And because microlens array and plate electrode spacing are bigger, electric field is very little, makes that the liquid crystal response time is long, and 2D/3D switches difficulty.
Summary of the invention
The technical matters that (one) will solve
The technical matters that the present invention will solve is: a kind of 2D/3D of realization conversion, transition response time weak point and the good display device of display effect are provided.
(2) technical scheme
For addressing the above problem, the invention provides a kind of polarized light transformational structure, this polarized light transformational structure is the blue phase liquid crystal box that transverse electric field drives, and is used for the linear polarization light polarization direction of incident is not changed or 90 ° of outgoing of change of polarized direction.
Preferably; The blue phase liquid crystal box that said transverse electric field drives comprises the blue phase liquid crystal of filling between two-layer substrate and the said two-layer substrate; Be formed with the positive and negative strip shaped electric poles of alternately arranging on the arbitrary layer in the said two-layer substrate, the orientation of said electrode becomes 45 ° of angles with polarization direction from the said linearly polarized photon of said display panel incident.
The present invention also provides a kind of display device, comprises above-mentioned polarized light transformational structure.
Preferably, this device also comprises: display panel be used to export display image, and the light of output is linearly polarized photon.
Preferably, this device also comprises:
Lens subassembly is used for the said emergent light from said polarized light transformational structure is shown as plano lens or convex lens.
Preferably, said lens subassembly comprises single refraction rate lens and refraction of birefringence lens, and the curved surface of said single refraction rate lens and said refraction of birefringence lens agrees with each other.
Preferably, said single refraction rate lens are the convex lens array that a plurality of convex lens are formed, and said refraction of birefringence lens is the concavees lens array that a plurality of concavees lens are formed.
Preferably, the refractive index of said single refraction rate lens equals in two refractive indexes of said refraction of birefringence lens, and greater than the another one in two refractive indexes of said refraction of birefringence lens.
Preferably, said refraction of birefringence lens is the convex lens array that a plurality of convex lens are formed, and said single refraction rate lens are the concavees lens array that a plurality of concavees lens are formed.
Preferably, the refractive index of said single refraction rate lens equals in two refractive indexes of said refraction of birefringence lens, and less than the another one in two refractive indexes of said refraction of birefringence lens.
(3) beneficial effect
Display device of the present invention can realize the mode switch of 2D/3D, because the blue phase liquid crystal box that adopts transverse electric field to drive has improved display effect, has simplified the preparation technology of device, and has shortened the response time of 2D/3D conversion.
Description of drawings
Fig. 1 is the structural representation according to the display device of one embodiment of the present invention;
The display device that Fig. 2 a-Fig. 2 b is respectively embodiment 1 does not power up and powers up the principle schematic when moving;
The display device that Fig. 3 a-Fig. 3 b is respectively embodiment 2 does not power up and powers up the principle schematic when moving;
The display device that Fig. 4 a-Fig. 4 b is respectively embodiment 3 does not power up and powers up the principle schematic when moving;
The display device that Fig. 5 a-Fig. 5 b is respectively embodiment 4 does not power up and powers up the principle schematic when moving.
Embodiment
The display device that the present invention proposes specifies as follows in conjunction with accompanying drawing and embodiment.
Display device of the present invention can be OLED, plasma or liquid crystal indicator etc. well-known to those skilled in the art any one, at this not as to the restriction of technical scheme of the present invention.Polarized light transformational structure of the present invention is the blue phase liquid crystal box that transverse electric field drives.As shown in Figure 1, comprise according to the display device of one embodiment of the present invention: display panel 1, according to the polarized light transformational structure 2 and the lens subassembly of one embodiment of the present invention.
In the present invention, display panel 1 is used to export display image, and the light of output is linearly polarized photon.Polarized light transformational structure 2 is used for controllably will not changing from the linear polarization light polarization direction of display panel 1 incident or 90 ° of outgoing of change of polarized direction, and emergent light is incided lens subassembly.Lens subassembly is used for the emergent light from polarized light transformational structure 2 is shown as plano lens or convex lens, to realize the conversion of 2D/3D.
Wherein, Lens subassembly comprises single refraction rate lens 5a and refraction of birefringence lens 5b; Its placement location can be: be followed successively by single refraction rate lens 5a, refraction of birefringence lens 5b from polarized light transformational structure 2, or be followed successively by refraction of birefringence lens 5b, single refraction rate lens 5a from polarized light transformational structure 2.The curved surface of single refraction rate lens 5a and refraction of birefringence lens 5b agrees with each other, and the refractive index of single refraction rate lens 5a is n1, and the refractive index of refraction of birefringence lens 5b is ne and no, and n1 equals ne or no, and is greater than or less than another one.
Shown in Fig. 2 a-2b, in the display device of present embodiment, display panel 1 is one the display device with polarized light source to be provided, and this is ripe prior art, does not do at this and gives unnecessary details.In the present embodiment; Polarized light from display panel 1 outgoing is propagated forward with the mode that is parallel to the vibration of paper direction; Straight line is represented the direction of propagation of light in the drawings; Short-term and round dot perpendicular to the direction of propagation of light are all represented the polarization direction, perpendicular to the short-term of the direction of propagation of light represent for being parallel to the polarization direction of paper direction vibration, and round dot is represented the polarization direction of vertical paper direction vibration.
The blue phase liquid crystal box that polarized light transformational structure 2 drives for transverse electric field; Comprise the blue phase liquid crystal 4 of filling between layer glass substrate 2a, 2b (also can be other any transparency carriers well-known to those skilled in the art such as quartz base plate) and layer glass substrate 2a, the 2b; Wherein, Be formed with positive and negative a plurality of strip shaped electric poles 3 of alternately arranging (also can on glass substrate 2b, form this electrode 3, and also like this among the following embodiment 2-4) on the glass substrate 2a adjacent, and the orientation of electrode 3 becomes 45 ° of angles with the polarization direction of polarized light in inciding this structure with display panel 1; Make when this electrode 3 powered up; Blue phase liquid crystal 4 polarization direction angle of director and incident polarized light under electric field action is 45 °, and phase delay is half-wavelength, and the polarization direction just in time changes 90 °.
Single refraction rate lens 5a is the convex lens array that a plurality of convex lens are formed, the concavees lens array that refraction of birefringence lens 5b forms as a plurality of concavees lens, and the contiguous polarized light transformational structure 2 of single refraction rate lens 5a.Refraction of birefringence lens 5b further comprises glass substrate 8 (also can be other any transparency carriers well-known to those skilled in the art such as quartz base plate) and is filled in the liquid crystal 6 between single refraction rate lens 5a and the glass substrate 8; Be formed with oriented layer 7 on the glass substrate 8; Make liquid crystal 6 major axis axially parallels in glass substrate 8 orientations; This is ripe prior art, does not do at this and gives unnecessary details.Liquid crystal 6 is selected the positivity liquid crystal for use in the present embodiment.There is relation: n1=ne＞no in the refractive index n 1 of single refraction rate lens 5a with the refractive index n e of refraction of birefringence lens 5b and no.
Shown in Fig. 2 a, when the electrode 3 of polarized light transformational structure 2 did not power up, blue phase liquid crystal 4 isotropy can not change the polarisation of light direction.Getting into blue phase liquid crystal box that transverse electric field drives from the polarized light that is parallel to paper direction vibration of display panel 1 outgoing does not change the polarization direction and continues to propagate and enter into lens subassembly.Light is propagated in refractive index is the single refraction rate lens 5a of n1, and when then getting in the concavees lens that liquid crystal 6 forms, the vibration of light is along the long axis of liquid crystal molecule direction, and the concavees lens that liquid crystal 6 forms are ne to this ray refraction rate.Because n1=ne is not so the direction of propagation in this time changes.Be the 2D pattern this moment.
Shown in Fig. 2 b, when the electrode 3 of polarized light transformational structure 2 powered up, blue phase liquid crystal 4 optical axises were arranged along direction of an electric field.Because electrode 3 becomes 45 ° of angles with the polarization direction of initial polarized light, so this moment, blue phase liquid crystal 4 also was 45 ° with the angle that incides polarized light wherein.45 ° of blue phase liquid crystal 4 optical axises and incident polarization light polarization direction angles; The phase delay half-wavelength; Therefore the polarized light that is parallel to the vibration of paper direction from display panel 1 outgoing changes 90 ° through the blue phase liquid crystal box rear polarizer direction that transverse electric field drives, and becomes the polarized light of vertical paper direction vibration.Enter into lens subassembly with this polarization direction; Light is propagated in refractive index is the single refraction rate lens 5a of n1; When then getting in the concavees lens that liquid crystal 6 forms, the vibration of light is along liquid crystal 6 molecule short-axis directions, and the concavees lens that liquid crystal 6 forms are no to this ray refraction rate.Because n1＞no is so the direction of propagation in this time changes.Move the 3D pattern this moment.
Embodiment 2
Shown in Fig. 3 a-3b, the structure of the display device of present embodiment and embodiment 1 are basic identical, and difference is, vertical among the polarization of incident light direction of display panel 1 and the embodiment 1, and therefore, liquid crystal 6 is selected negative liquid crystal for use in the present embodiment.There is relation: n1=no＞ne in the refractive index n 1 of single refraction rate lens 5a with the refractive index n e of refraction of birefringence lens 5b and no.
Shown in Fig. 3 a, when the electrode 3 of polarized light transformational structure 2 did not power up, blue phase liquid crystal 4 isotropy can not change the polarisation of light direction.The blue phase liquid crystal box that the polarized light entering transverse electric field that vibrates from the vertical paper direction of display panel 1 outgoing drives does not change polarization direction continuation propagation and enters into lens subassembly.Light is propagated in refractive index is the single refraction rate lens 5a of n1, and when getting in the concavees lens that liquid crystal 6 forms, the vibration of light is along the liquid crystal molecule short-axis direction, and then the concavees lens that form of liquid crystal 6 are no to this ray refraction rate.Because n1=no is not so the direction of propagation in this time changes.Be the 2D pattern this moment.
Shown in Fig. 3 b, when the electrode 3 of polarized light transformational structure 2 powered up, blue phase liquid crystal 4 optical axises were arranged along direction of an electric field.Because electrode 3 becomes 45 ° of angles with the polarization direction of initial polarized light, so this moment, blue phase liquid crystal 4 also was 45 ° with the angle that incides polarized light wherein.45 ° of blue phase liquid crystal 4 optical axises and incident polarization light polarization direction angles; The phase delay half-wavelength; Therefore the blue phase liquid crystal box rear polarizer direction that the polarized light that vibrates from the vertical paper direction of display panel 1 outgoing gets into the transverse electric field driving changes 90 °, becomes the vibration polarized light that is parallel to the paper direction.Enter into lens subassembly with this polarization direction; Light is propagated in refractive index is the single refraction rate lens 5a of n1; When then getting in the concavees lens that liquid crystal 6 forms, the vibration of light is along liquid crystal 6 molecule short-axis directions, and the concavees lens that liquid crystal 6 forms are ne to this ray refraction rate.Because n1＞ne is so the direction of propagation in this time changes.Move the 3D pattern this moment.
Shown in Fig. 4 a-4b, in the display device of present embodiment, display panel 1 and polarisation transformational structure 2 all with the display device of embodiment 1 in structure identical, the polarization of incident light direction of display panel 1 also with embodiment 1 in identical.
In the display device of present embodiment, single refraction rate lens 5a is the concavees lens array that a plurality of concavees lens are formed, the convex lens array that refraction of birefringence lens 5b forms as a plurality of convex lens, and the contiguous polarized light transformational structure 2 of refraction of birefringence lens 5b.Refraction of birefringence lens 5b is formed by glass substrate 8 that is filled in next-door neighbour's glass substrate 2b and the liquid crystal 6 between the single refraction rate lens 5a; And glass substrate 8 is formed with oriented layer 7 on the one side of refraction of birefringence lens 5b; Make liquid crystal 6 major axis axially parallels in glass substrate 8 orientations; This is ripe prior art, does not do at this and gives unnecessary details.Liquid crystal 6 adopts negative liquid crystal.There is relation: n1=ne＜no in the refractive index n 1 of single refraction rate lens 5a with the refractive index n e of refraction of birefringence lens 5b and no.
Shown in Fig. 4 a, when the electrode 3 of polarized light transformational structure 2 did not power up, blue phase liquid crystal 4 isotropy can not change the polarisation of light direction.Getting into blue phase liquid crystal box that transverse electric field drives from the polarized light that is parallel to paper direction vibration of display panel 1 outgoing does not change the polarization direction and continues to propagate and enter into lens subassembly.Light is propagated in refraction of birefringence lens 5b, and at this moment, the vibration of light is along the long axis direction of liquid crystal 6 molecules, and this refraction of birefringence lens 5b is ne to this ray refraction rate, and then getting into refractive index is the single refraction rate lens 5a of n1.Because ne=n1 is not so the direction of propagation in this time changes.Be the 2D pattern this moment.
Shown in Fig. 4 b, when the electrode 3 of polarized light transformational structure 2 powered up, blue phase liquid crystal 4 optical axises were arranged along direction of an electric field.Because electrode 3 becomes 45 ° of angles with the polarization direction of initial polarized light, so this moment, blue phase liquid crystal 4 also was 45 ° with the angle that incides polarized light wherein.45 ° of blue phase liquid crystal 4 optical axises and incident polarization light polarization direction angles; The phase delay half-wavelength; Therefore the polarized light that is parallel to the paper direction from display panel 1 outgoing changes 90 ° through the blue phase liquid crystal box rear polarizer direction that transverse electric field drives, and becomes the polarized light of vertical paper direction vibration.Enter into lens subassembly with this polarization direction; Light is propagated in refraction of birefringence lens 5b, and at this moment, the vibration of light is along the short-axis direction of liquid crystal 6 molecules; This refraction of birefringence lens 5b is no to this ray refraction rate, and then getting into refractive index is the single refraction rate lens 5a of n1.Because no＞n1 is so the direction of propagation in this time changes.Move the 3D pattern this moment.
Shown in Fig. 5 a-5b, the structure of the display device of present embodiment and embodiment 3 are basic identical, and difference is, vertical among the polarization of incident light direction of display panel 1 and the embodiment 3, and therefore, liquid crystal 6 is selected the positivity liquid crystal for use in the present embodiment.There is relation: n1=no＜ne in the refractive index n 1 of single refraction rate lens 5a with the refractive index n e of refraction of birefringence lens 5b and no.
Shown in Fig. 5 a, when the electrode 3 of polarized light transformational structure 2 did not power up, blue phase liquid crystal 4 isotropy can not change the polarisation of light direction.Getting into blue phase liquid crystal box that transverse electric field drives from the polarized light that is parallel to paper direction vibration of display panel 1 outgoing does not change the polarization direction and continues to propagate and enter into lens subassembly.Light is propagated in refraction of birefringence lens 5b, and at this moment, the vibration of light is along the short-axis direction of liquid crystal 6 molecules, and this refraction of birefringence lens 5b is no to this ray refraction rate, and then getting into refractive index is the single refraction rate lens 5a of n1.Because no=n1 is not so the direction of propagation in this time changes.Be the 2D pattern this moment.
Shown in Fig. 5 b, when the electrode 3 of polarized light transformational structure 2 powered up, blue phase liquid crystal 4 optical axises were arranged along direction of an electric field.Because electrode 3 becomes 45 ° of angles with the polarization direction of initial polarized light, so this moment, blue phase liquid crystal 4 also was 45 ° with the angle that incides polarized light wherein.45 ° of blue phase liquid crystal 4 optical axises and incident polarization light polarization direction angles; The phase delay half-wavelength; Therefore the polarized light that vibrates from the vertical paper direction of display panel 1 outgoing changes 90 ° through the blue phase liquid crystal box rear polarizer direction that transverse electric field drives, and becomes the polarized light that is parallel to the vibration of paper direction.Enter into lens subassembly with this polarization direction; Light is propagated in refraction of birefringence lens 5b, and at this moment, the vibration of light is along the long axis direction of liquid crystal 6 molecules; This refraction of birefringence lens 5b is ne to this ray refraction rate, after then getting into refractive index and being the single refraction rate lens 5a of n1.Because ne＞n1 is so the direction of propagation in this time changes.Move the 3D pattern this moment.
In the display device of invention, single refraction rate lens can be formed by rigid transparent material, and refraction of birefringence lens can be nematic liquid crystal or cholesteric liquid crystal or kalzit.
Above embodiment only is used to explain the present invention; And be not limitation of the present invention; The those of ordinary skill in relevant technologies field under the situation that does not break away from the spirit and scope of the present invention, can also be made various variations and modification; Therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (10)
1. a polarized light transformational structure is characterized in that, this polarized light transformational structure is the blue phase liquid crystal box that transverse electric field drives, and is used for the linear polarization light polarization direction of incident is not changed or 90 ° of outgoing of change of polarized direction.
2. polarized light transformational structure as claimed in claim 1; It is characterized in that; The blue phase liquid crystal box that said transverse electric field drives comprises the blue phase liquid crystal of filling between two-layer substrate and the said two-layer substrate; Be formed with the positive and negative strip shaped electric poles of alternately arranging on arbitrary layer in the said two-layer substrate, the orientation of said electrode becomes 45 ° of angles with the polarization direction of the linearly polarized photon of incident.
3. a display device is characterized in that, comprises the described polarized light transformational structure of claim 1.
4. display device as claimed in claim 3 is characterized in that, this device also comprises:
Display panel is used to export display image, and the light of output is linearly polarized photon.
5. display device as claimed in claim 3 is characterized in that, this device also comprises:
Lens subassembly is used for the said emergent light from said polarized light transformational structure is shown as plano lens or convex lens.
6. display device as claimed in claim 5 is characterized in that said lens subassembly comprises single refraction rate lens and refraction of birefringence lens, and the curved surface of said single refraction rate lens and said refraction of birefringence lens agrees with each other.
7. display device as claimed in claim 6 is characterized in that, said single refraction rate lens are the convex lens array that a plurality of convex lens are formed, and said refraction of birefringence lens is the concavees lens array that a plurality of concavees lens are formed.
8. display device as claimed in claim 6 is characterized in that, the refractive index of said single refraction rate lens equals in two refractive indexes of said refraction of birefringence lens, and greater than the another one in two refractive indexes of said refraction of birefringence lens.
9. display device as claimed in claim 6 is characterized in that, said refraction of birefringence lens is the convex lens array that a plurality of convex lens are formed, and said single refraction rate lens are the concavees lens array that a plurality of concavees lens are formed.
10. display device as claimed in claim 9 is characterized in that, the refractive index of said single refraction rate lens equals in two refractive indexes of said refraction of birefringence lens, and less than the another one in two refractive indexes of said refraction of birefringence lens.
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| WO2016015425A1 (en) * | 2014-08-01 | 2016-02-04 | 京东方科技集团股份有限公司 | Display substrate and manufacturing method therefor and display apparatus |
| US9977295B2 (en) | 2014-08-01 | 2018-05-22 | Boe Technology Group Co., Ltd. | Display substrate and manufacturing method thereof, display device |
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