CN102253562B - Stereo display device and liquid crystal lens thereof - Google Patents
Stereo display device and liquid crystal lens thereof Download PDFInfo
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- CN102253562B CN102253562B CN201110196033.4A CN201110196033A CN102253562B CN 102253562 B CN102253562 B CN 102253562B CN 201110196033 A CN201110196033 A CN 201110196033A CN 102253562 B CN102253562 B CN 102253562B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 97
- 239000000758 substrate Substances 0.000 claims abstract description 72
- 238000002834 transmittance Methods 0.000 claims abstract description 39
- 230000000694 effects Effects 0.000 claims abstract description 21
- 230000005684 electric field Effects 0.000 claims abstract description 8
- 230000007704 transition Effects 0.000 claims description 9
- 238000003384 imaging method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
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Abstract
The invention discloses a stereo display device and a liquid crystal lens thereof. The liquid crystal lens comprises a first substrate, a second substrate, a liquid crystal layer, a first electrode layer and a second electrode layer, wherein the first substrate and the second substrate are arranged at a certain interval; the liquid crystal layer is arranged between the first substrate and the second substrate; the first electrode layer is arranged between the first substrate and the liquid crystal layer; and the second electrode layer is arranged between the second substrate and the liquid crystal layer; the first electrode layer and the second electrode layer are used for producing electric fields, so that the liquid crystal layer can produce a lens effect; and the first electrode layer comprises a plurality of strip electrodes, the strip electrodes are arranged at a certain interval, and each strip electrode is provided with a structure with gradually-changed transmittance along a direction perpendicular to the extending direction of the strip electrode. Through the mode above, by using the stereo display device and liquid crystal lens disclosed by the invention, the imaging quality can be improved, and a good image display effect can be achieved.
Description
Technical field
The present invention relates to optical technical field, particularly relate to a kind of 3 d display device and liquid crystal lens thereof.
Background technology
Along with the fast development of stereo display technique, stereoscopic display device has also had more and more a large amount of demands, show that in the middle of numerous technology, bore hole stereo display makes it in 3 D stereo demonstration field, enjoy favor owing to wearing the advantage of special eyeglasses without observer realizing 3 D stereo.
At present, the major way of realizing bore hole stereo display technique is by grating is set before display panel, in the horizontal direction the pixel cell of display panel is divided into odd column pixel and even column pixel, thereby for beholder's right and left eyes provides respectively two width different images, utilize the parallax effect of beholder's left-eye image and eye image to form the depth of field, and then produce stereo display effect.Existing grating comprises black and white parallax obstacle grating and column physics lens etc., because the pitch of common grating is unadjustable, can only limit spectators watches within the scope of certain specific viewing distance, dirigibility and viewing distance are limited, and this has limited the application of grating type three-dimensional display technique in life.For this reason, industry has been developed and can have been passed through liquid crystal obstacle grating and the liquid crystal lens of voltage-regulation grating pitch, but this liquid crystal grating still has moire fringes defect, has affected stereo display effect.
Refer to Fig. 1, Fig. 1 is the use schematic diagram of existing grating type three-dimensional display.The image light that flat-panel screens 4 produces enters beholder 6 eyes after grating 5.Refer to Fig. 2, Fig. 2 is the moire fringes schematic diagram of existing grating type three-dimensional display.Owing to existing periodically and interfering between grating and the pel array of flat-panel screens, the image that the pel array 7 of flat-panel screens produces can form moire fringes in shown image 9 after grating 8, obviously, this moire fringes phenomenon has a great impact the effect of 3 D stereo picture, can destroy the sight of image, have a strong impact on visual effect, cause beholder's inadaptable sense.
The transmittance of the drive electrode material of liquid crystal grating has certain difference with the region that electrode place is not set at present, causes can producing moire fringes effect between drive electrode edge and panel pixel black matrix around, has affected image display effect.
As shown in Figure 3 and Figure 4, shown a kind of schematic diagram of liquid crystal lens in prior art, this liquid crystal lens 100 comprises first substrate 110, second substrate 120, liquid crystal layer 130, the first electrode layer 140, the second electrode lay 150, the first alignment film 160 and the second alignment film 170.
Wherein, these first substrate 110 and these second substrate 120 relative spacing settings, this liquid crystal layer 130 is between this first substrate 110 and this second substrate 120, this first electrode layer 140 is arranged between this first substrate 110 and this liquid crystal layer 130, covered by this first alignment film 160, this the second electrode lay 150 is arranged between this second substrate 120 and this liquid crystal layer 130, is covered by this second alignment film 170.
As shown in Figure 4, this first electrode layer 140 is multiple rectangular bar-shaped electrodes, it has uniform thickness, because the transmittance of the plurality of strip electrode has larger difference with the transmittance that strip electrode location is not set, easily cause the plurality of bar shaped electroplax and panel pixel to produce moire fringes around, as shown in phantom in Figure 4.
Summary of the invention
The invention provides a kind of 3 d display device and liquid crystal lens, can reduce moire fringes and form, realize good image display effect.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of liquid crystal lens is provided, comprises:
Spaced first substrate and second substrate;
Liquid crystal layer between this first substrate and this second substrate;
The first electrode layer, is arranged between this first substrate and this liquid crystal layer;
The second electrode lay, is arranged between this second substrate and this liquid crystal layer;
This first electrode layer and this second electrode lay are for generation of electric field, so that this liquid crystal layer produces lens effect;
Wherein, this first electrode layer comprises multiple spaced strip electrodes, and along the bearing of trend perpendicular to this strip electrode, this strip electrode has transmittance grading structure.
According to one preferred embodiment of the present invention, this transmittance grading structure is that this strip electrode is made as to cross section is trapezoidal structure.
According to one preferred embodiment of the present invention, this is trapezoidal is isosceles trapezoid, and this trapezoidal long limit is positioned at this first substrate side, and this trapezoidal minor face arranges towards this liquid crystal layer.
According to one preferred embodiment of the present invention, the junction of this trapezoidal minor face and side (waist) is set to arc transition structure.
According to one preferred embodiment of the present invention, this transmittance grading structure is leg-of-mutton structure for this strip electrode is made as to cross section.
According to one preferred embodiment of the present invention, this triangle is isosceles triangle, and this leg-of-mutton base is positioned at this first substrate side, and this leg-of-mutton drift angle arranges towards this liquid crystal layer, and described drift angle is set to arc transition structure.
According to one preferred embodiment of the present invention, this transmittance grading structure is micro-stepped leg-of-mutton structure for this strip electrode is made as to cross section.
For solving the problems of the technologies described above, another technical solution used in the present invention is: a kind of liquid crystal lens is provided, comprises:
Spaced first substrate and second substrate;
Liquid crystal layer between this first substrate and this second substrate;
The first electrode layer, is arranged between this first substrate and this liquid crystal layer;
The second electrode lay, is arranged between this second substrate and this liquid crystal layer;
This first electrode layer and this second electrode lay are for generation of electric field, so that this liquid crystal layer produces lens effect;
Wherein, this first electrode layer comprises multiple spaced strip electrodes, and along the bearing of trend perpendicular to this strip electrode, the thickness of this strip electrode xsect is reduced to both sides gradually by centre.
For solving the problems of the technologies described above, another technical solution used in the present invention is: a kind of liquid crystal lens is provided, comprises:
Spaced first substrate and second substrate;
Liquid crystal layer between this first substrate and this second substrate;
The first electrode layer, is positioned at a side of adjacent this liquid crystal layer of this first substrate;
The second electrode lay, is positioned at a side of adjacent this liquid crystal layer of this second substrate;
This first electrode layer and this second electrode lay are for generation of electric field, so that this liquid crystal layer produces lens effect;
The first alignment film, covers this first electrode layer;
The second alignment film, covers this second electrode lay;
Wherein, this first electrode layer comprises multiple strip electrodes, and the material that this strip electrode adopts transmittance and this first alignment film to reach unanimity is made.
For solving the problems of the technologies described above, another technical solution used in the present invention is: a kind of 3 d display device is provided, comprises display panel and be located at the liquid crystal lens on this display panel, this liquid crystal lens adopts above-mentioned liquid crystal lens.
The invention has the beneficial effects as follows: be different from the situation of prior art, the electrode of 3 d display device provided by the invention and liquid crystal lens thereof is provided with transmittance grading structure, effectively reduce moire fringes and form, greatly improved the viewing effect of image.
Brief description of the drawings
Fig. 1 is the use schematic diagram of existing grating type three-dimensional display;
Fig. 2 is the moire fringes schematic diagram of existing grating type three-dimensional display;
Fig. 3 is the schematic cross-section of a kind of liquid crystal lens in prior art;
The perspective view of the liquid crystal lens shown in Fig. 4 Fig. 3;
Fig. 5 is the schematic cross-section of liquid crystal lens according to one preferred embodiment of the present invention;
Fig. 6 is the schematic cross-section of the liquid crystal lens of another preferred embodiment according to the present invention;
Fig. 7 is the schematic cross-section of the liquid crystal lens of another preferred embodiment according to the present invention;
Fig. 8 is the schematic cross-section of the liquid crystal lens of another preferred embodiment according to the present invention;
Fig. 9 has shown the schematic diagram of light transmitance when through liquid crystal lens of the prior art;
Figure 10 has shown the schematic diagram of light transmitance when through liquid crystal lens of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
The invention provides a kind of 3 d display device, comprise display panel and liquid crystal lens.Display panel is for showing left-eye image and the eye image with parallax; Liquid crystal lens is arranged on display panel, and will have the left-eye image of parallax and eye image lead respectively left eye corresponding to beholder and right eye.
Refer to Fig. 5, describe for convenience the present invention, Fig. 5 only shows the structural representation of liquid crystal lens.As shown in Figure 5, this liquid crystal lens 200 comprises first substrate 210, second substrate 220, liquid crystal layer 230, the first electrode layer 240, the second electrode lay 250, the first alignment film 260 and the second alignment film 270.
Wherein, these first substrate 210 and these second substrate 220 relative spacing settings, this liquid crystal layer 230 is between this first substrate 210 and this second substrate 220, this first electrode layer 240 is arranged between this first substrate 210 and this liquid crystal layer 230, covered by this first alignment film 260, this the second electrode lay 250 is arranged between this second substrate 220 and this liquid crystal layer 230, is covered by this second alignment film 270; This first electrode layer 240 and this second electrode lay 250 are for generation of electric field, so that this liquid crystal layer 230 produces lens effect.
In embodiments of the present invention, this first electrode layer 240 comprises the strip electrode that multiple spaced and parallel arrange, along the bearing of trend perpendicular to strip electrode, the plurality of strip electrode is provided with transmittance grading structure, at the bearing of trend perpendicular to this strip electrode, the thickness of this strip electrode xsect is reduced to both sides gradually by centre.
Particularly, in the present embodiment, this transmittance grading structure is that strip electrode is made as to cross section is trapezoidal structure, this trapezoidal isosceles trapezoid that is generally, its long limit is positioned at first substrate 210 1 sides, its minor face arranges towards liquid crystal layer 230, in a preferred embodiment, the junction of the minor face that this is trapezoidal and side (waist) is set to arc transition structure, the transmittance of the plurality of strip electrode of this arc transition structure changes journey gradual change trend, avoids being easy to form moire fringes because most advanced and sophisticated transmittance changes sudden change.
Refer to Fig. 6, in another embodiment of the present invention, this liquid crystal lens 300 comprises first substrate 310, second substrate 320, liquid crystal layer 330, the first electrode layer 340, the second electrode lay 350, the first alignment film 360 and the second alignment film 30.
Equally, these first substrate 310 and these second substrate 320 relative spacing settings, this liquid crystal layer 330 is between this first substrate 310 and this second substrate 320, this first electrode layer 340 is arranged between this first substrate 310 and this liquid crystal layer 330, covered by this first alignment film 360, this the second electrode lay 350 is arranged between this second substrate 320 and this liquid crystal layer 330, is covered by this second alignment film 370; This first electrode layer and this second electrode lay are for generation of electric field, so that this liquid crystal layer produces lens effect.
In embodiments of the present invention, this first electrode layer 340 is the strip electrode that multiple spaced and parallel arrange, and along the bearing of trend perpendicular to strip electrode, the plurality of strip electrode is provided with transmittance grading structure.
Particularly, in the present embodiment, this transmittance grading structure is leg-of-mutton structure for strip electrode is made as to cross section, and this triangle is generally isosceles triangle, this leg-of-mutton base is positioned at first substrate 310 1 sides, and this leg-of-mutton drift angle arranges towards liquid crystal layer 330.In a preferred embodiment, leg-of-mutton drift angle is set to arc transition structure 500, this arc transition structure 500 makes the transmittance of the plurality of strip electrode change journey gradual change trend, avoids being easy to form moire fringes because most advanced and sophisticated transmittance changes sudden change, as shown in Figure 8.
Refer to Fig. 7, in another embodiment of the present invention, this liquid crystal lens 400 comprises first substrate 410, second substrate 420, liquid crystal layer 430, the first electrode layer 440, the second electrode lay 450, the first alignment film 460 and the second alignment film 470.
Equally, these first substrate 410 and these second substrate 420 relative spacing settings, this liquid crystal layer 430 is between this first substrate 410 and this second substrate 420, this first electrode layer 440 is arranged between this first substrate 410 and this liquid crystal layer 430, covered by this first alignment film 460, this the second electrode lay 450 is arranged between this second substrate 420 and this liquid crystal layer 430, and this second alignment film 470 covers; This first electrode layer and this second electrode lay are for generation of electric field, so that this liquid crystal layer produces lens effect.
In embodiments of the present invention, this first electrode layer 440 is the strip electrode that multiple spaced and parallel arrange, and along the bearing of trend perpendicular to strip electrode, the plurality of strip electrode is provided with transmittance grading structure.
Particularly, in the present embodiment, this transmittance grading structure is micro-stepped leg-of-mutton structure for strip electrode is made as to cross section, and the variation in thickness of each micro-ladder is relatively little, can make the transmittance of this electrode change journey gradual change trend.
In another embodiment, the first electrode layer comprises the strip electrode that multiple spaced and parallel arrange, the second electrode lay comprises the strip electrode that multiple spaced and parallel arrange, the bearing of trend of the first electrode layer strip electrode is vertical with the bearing of trend of the second electrode lay strip electrode, and the strip electrode of the first electrode layer and the strip electrode of the second electrode lay are equipped with the transmittance grading structure described in the present invention, this structure can form the liquid crystal lens of another direction, carries out 3D demonstration while being conducive to display panel 90-degree rotation.
Next, illustrate that in conjunction with Fig. 9 and Figure 10 the present invention reduces the principle of moire fringes.
As shown in Figure 9, the liquid crystal lens of prior art is in application, and when light passes through this liquid crystal lens, the transmittance at the first electrode layer 140 places is T
1, and the transmittance that the first electrode layer 140 location are not set is T
2, as can be seen here, at the first electrode layer 140 and substrate 110 places that the first electrode layer 140 is not set, transmittance is from T
1directly change to T
2, and its transmittance presents very significantly abrupt change in 140 edges of the first electrode layer, shows as obvious boundary line in display frame, and between this boundary line and panel pixel array, interference mutually, causes easily forming moire fringes.
And in Figure 10, when light passes through liquid crystal lens provided by the invention, because the first electrode layer 340 is provided with the transmittance grading structure described in above-described embodiment, its transmittance is from the middle T of the first electrode layer 340
1be T to the transition gradually at edge
1~T
2be transitioned into again the T at first substrate 310 places that do not cover the first electrode layer 340
2this transmittance presents and gradually changes in the edge of the first electrode layer 340, the light and shade striped of having avoided the unexpected variation of transmittance and form, thereby minimizing overlaps with pixel cell or black matrix that the matrix on display panel is arranged, make liquid crystal lens be difficult for generating moire fringes, thereby improved image quality, realize good image display effect.
Find through experiment, in liquid crystal lens, the rate of change of the transmittance of the edge of the first electrode layer can affect the boundary line of the first electrode layer, and then the formation of moire fringes is impacted.Because the display effect of moire fringes is to repeat by the periodicity of multiple moire fringes the macro-effect forming, and adopt the liquid crystal lens of above-mentioned configuration, in the time that the boundary line of the first electrode layer is not obvious, the width of multiple moire fringes is also just inconsistent, this periodicity of just having destroyed multiple moire fringes repeats, and therefore the display effect of moire fringes is also just eliminated greatly.
Certainly, the method of eliminating moire fringes is not limited to this, can also be by research and development new material electrode, the mode that the transmittance of electrode and the transmittance of alignment film are reached unanimity, and change thickness of electrode having under effect same prerequisite, or the many-side such as material to electrode, structure, form is carried out the modes such as comprehensive adjusted design.The present invention does not limit the implementation of transmittance grading structure in electrode, and those skilled in the art should know, as long as the transmittance between electrode zone and non-electrode zone is the consistent optical effect that just can reach smeared out boundary line of trend that gradually changes.
The foregoing is only embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes instructions of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (8)
1. a liquid crystal lens, comprising:
Spaced first substrate and second substrate;
Liquid crystal layer between described first substrate and described second substrate;
The first electrode layer, is arranged between described first substrate and described liquid crystal layer, and described the first electrode layer comprises multiple spaced strip electrodes;
The second electrode lay, is arranged between described second substrate and described liquid crystal layer;
Described the first electrode layer and described the second electrode lay are for generation of electric field, so that described liquid crystal layer produces lens effect;
It is characterized in that, along the bearing of trend perpendicular to described strip electrode, described strip electrode has transmittance grading structure.
2. liquid crystal lens according to claim 1, is characterized in that, described transmittance grading structure is that described strip electrode is made as to cross section is trapezoidal structure.
3. liquid crystal lens according to claim 2, is characterized in that, described trapezoidal be isosceles trapezoid, described trapezoidal long limit is positioned at described first substrate side, described trapezoidal minor face is towards described liquid crystal layer setting.
4. liquid crystal lens according to claim 3, is characterized in that, the junction of described trapezoidal minor face and side is set to arc transition structure.
5. liquid crystal lens according to claim 1, is characterized in that, described transmittance grading structure is leg-of-mutton structure for described strip electrode is made as to cross section.
6. liquid crystal lens according to claim 5, it is characterized in that, described triangle is isosceles triangle, and described leg-of-mutton base is positioned at described first substrate side, described leg-of-mutton drift angle is towards described liquid crystal layer setting, and described drift angle is set to arc transition structure.
7. liquid crystal lens according to claim 1, is characterized in that, described transmittance grading structure is micro-stepped leg-of-mutton structure for described strip electrode is made as to cross section.
8. a 3 d display device, comprises display panel and is located at the liquid crystal lens on described display panel, described liquid crystal lens adopts according to the liquid crystal lens described in any one in claim 1 to 7.
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Families Citing this family (12)
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CN102944961B (en) * | 2012-11-15 | 2016-03-30 | 深圳市华星光电技术有限公司 | Bore hole 3D display device and liquid crystal lens thereof |
CN103605245B (en) * | 2013-11-20 | 2016-04-20 | 深圳市华星光电技术有限公司 | A kind of liquid crystal lens and 3 d display device |
CN103869573B (en) * | 2014-03-06 | 2017-10-27 | 京东方科技集团股份有限公司 | A kind of preparation method of liquid crystal lens substrate |
CN104597685B (en) * | 2014-12-30 | 2018-07-06 | 深圳市魔眼科技有限公司 | Liquid crystal lens and liquid crystal display device |
CN104597684A (en) * | 2014-12-30 | 2015-05-06 | 深圳市亿思达科技集团有限公司 | Liquid crystal lens and liquid crystal display device based on naked eye three-dimensional display |
CN104597683A (en) * | 2014-12-30 | 2015-05-06 | 深圳市亿思达科技集团有限公司 | Liquid crystal lens capable of displaying in multiple directions and liquid crystal display device |
CN105988224B (en) * | 2015-02-09 | 2019-03-19 | 北京三星通信技术研究有限公司 | Three-dimensional display apparatus and its Moire fringe method for reducing and device |
CN104635398A (en) | 2015-03-09 | 2015-05-20 | 京东方科技集团股份有限公司 | Display device and grating control method |
KR102436564B1 (en) * | 2017-12-29 | 2022-08-26 | 엘지디스플레이 주식회사 | Stereoscopic Display apparatus having a barrier panel |
CN109799631A (en) * | 2019-03-15 | 2019-05-24 | 京东方科技集团股份有限公司 | A kind of liquid crystal lens and preparation method thereof, display device |
CN110471233A (en) * | 2019-08-26 | 2019-11-19 | 京东方科技集团股份有限公司 | Liquid crystal lens and display device |
JP2022126144A (en) * | 2021-02-18 | 2022-08-30 | 株式会社ジャパンディスプレイ | Lighting device |
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CN102062985A (en) * | 2010-11-16 | 2011-05-18 | 深圳超多维光电子有限公司 | Liquid crystal lens, control method thereof and 3D display device |
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JP3588474B2 (en) * | 1993-09-16 | 2004-11-10 | 株式会社東芝 | Liquid crystal display |
JP3608562B2 (en) * | 2003-03-07 | 2005-01-12 | ソニー株式会社 | Reflective liquid crystal display element and liquid crystal display device |
JP2006196200A (en) * | 2005-01-11 | 2006-07-27 | Idemitsu Kosan Co Ltd | Transparent electrode and its manufacturing method |
US8377331B2 (en) * | 2009-09-29 | 2013-02-19 | University Of Central Florida Research Foundation, Inc. | Liquid crystals composition and liquid crystal display with patterned electrodes |
CN201765418U (en) * | 2010-08-19 | 2011-03-16 | 华映视讯(吴江)有限公司 | Naked-eye stereoscopic display device |
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