CN102621763B - Display device and liquid crystal lens - Google Patents
Display device and liquid crystal lens Download PDFInfo
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- CN102621763B CN102621763B CN201210033474.7A CN201210033474A CN102621763B CN 102621763 B CN102621763 B CN 102621763B CN 201210033474 A CN201210033474 A CN 201210033474A CN 102621763 B CN102621763 B CN 102621763B
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Abstract
The invention discloses a display device and a liquid crystal lens. The displace device comprises a display panel and the liquid crystal lens. The liquid crystal lens comprises a first substrate, a second substrate, a liquid crystal layer, a first electrode layer, a second electrode layer, a third electrode layer and an insulation layer. The liquid crystal layer is configured between the first substrate and the second substrate. The first electrode layer is configured between the first substrate and the liquid crystal layer. The second electrode layer is configured between the second substrate and the liquid crystal layer. The third electrode layer is configured between the second substrate layer and the second substrate. The liquid crystal layer is driven by the first electrode layer, the second electrode layer and the third electrode layer, the refractive index is gradually reduced and then increased gradually to defining a lens unit. The insulation layer is configured between the second electrode layer and the third electrode layer. The design of the electrodes of the liquid crystal lens can drive the liquid crystal layer to perform an optical effect similar to that of the lens by only using one driving voltage; and furthermore, the display device has the switching function between a plane display mode and a three-dimensional display mode under the drive of the liquid crystal lens.
Description
Technical field
The invention relates to a kind of display device and optical element, and particularly relevant for a kind of display device and liquid crystal lens.
Background technology
The main principle system of stereo display technique makes beholder's left eye receive respectively different images from right eye, and the image that left eye and right eye receive can be via brain analysis overlapping and make beholder perceive stereovision and the degree of depth of display frame, and then produce stereoscopic sensation.Therefore want to show stereopsis in flat-panel screens, need provide two groups of images that intermesh to simulate respectively binocular vision in same picture, then make respectively two to receive two group images through specific optical element, reach the effect of stereopsis.
Utilized now two kinds of technology to reach the stereo display effect that bore hole can be watched, the first is utilized disparity barrier (Barrier), and another kind is column convex lens array (Column Lens Array).In addition, more have a kind of liquid crystal lens three-dimensional display to be suggested, the three-dimensional display that is used for replacing disparity barrier or the design of column convex lens is to realize plane-three-dimensional switchable function.Liquid crystal lens three-dimensional display system utilizes and is distributed in the liquid crystal molecule in the electric field driven liquid crystal layer in liquid crystal layer, makes the major axis of liquid crystal molecule along with electric field strong and weak, change direction, and then the index distribution being similar to as lens is provided.Yet liquid crystal lens needs complicated electrode design and voltage driving mode so that liquid crystal lens is similar to solid lens, so liquid crystal lens still needs further to be improved in its Electric Field Distribution and design.
Summary of the invention
The invention provides a kind of display device and liquid crystal lens, wherein the electrode design of liquid crystal lens allows only to use a kind of driving voltage can drive liquid crystal layer that the optical effect as lens is provided, and can make display device have the function that plane display mode and stereo display pattern are switched by the driving of liquid crystal lens.
The present invention proposes a kind of liquid crystal lens, and it comprises first substrate, second substrate, liquid crystal layer, the first electrode layer, the second electrode lay, third electrode layer and insulation course.Liquid crystal layer is disposed between first substrate and second substrate.The first electrode layer is disposed between first substrate and liquid crystal layer.The second electrode lay is disposed between second substrate and liquid crystal layer, and the second electrode lay comprises a plurality of the second electrodes of floating.Third electrode layer is disposed between the second electrode lay and second substrate, and third electrode layer comprises a plurality of third electrodes, and each second electrode covers at least one position in third electrode, to form a plurality of driver elements, driver element is arranged along a direction, and wherein liquid crystal layer is subject to the driving of the first electrode layer, the second electrode lay and third electrode layer and presents refractive index to reduce gradually then to increase gradually to define lens unit along direction.Insulation course is disposed between the second electrode lay and third electrode layer.
In one embodiment of this invention, the third electrode that the second above-mentioned electrode covers equal number is to form driver element.
In one embodiment of this invention, the third electrode in above-mentioned same lens unit is partly enabled, and other are not enabled.
The quantity of the third electrode that in one embodiment of this invention, at least two above-mentioned driver elements have is different.
In one embodiment of this invention, the width of the second above-mentioned electrode is identical.
In one embodiment of this invention, the width of at least two above-mentioned the second electrodes is different.
In one embodiment of this invention, above-mentioned the second electrode lay more comprises a plurality of auxiliary electrodes, is positioned at driver element side and auxiliary electrode and is suitable for being transfused to driving voltage.
In one embodiment of this invention, the spacing of above-mentioned auxiliary electrode equals in fact the width of lens unit
In one embodiment of this invention, above-mentioned third electrode layer more comprises a plurality of auxiliary electrodes, and the second electrode of being floated in auxiliary electrode position comes out.
In one embodiment of this invention, the voltage of above-mentioned third electrode equals in fact the voltage of auxiliary electrode
In one embodiment of this invention, the first above-mentioned electrode layer is transfused to ground voltage, and third electrode is transfused to driving voltage.
The present invention proposes a kind of display device, and it comprises display panel and liquid crystal lens.Display panel has a plurality of picture elements unit.Liquid crystal lens is disposed on display panel.Wherein liquid crystal lens comprises first substrate, second substrate, liquid crystal layer, the first electrode layer, the second electrode lay, third electrode layer and insulation course.Liquid crystal layer is disposed between first substrate and second substrate.The first electrode layer is disposed between first substrate and liquid crystal layer.The second electrode lay is disposed between second substrate and liquid crystal layer, and the second electrode lay comprises a plurality of the second electrodes of floating.Third electrode layer is disposed between the second electrode lay and second substrate, and third electrode layer comprises a plurality of third electrodes, and each second electrode covers at least one position in third electrode, to form a plurality of driver elements, driver element is arranged along a direction, and wherein liquid crystal layer is subject to the driving of the first electrode layer, the second electrode lay and third electrode layer and presents refractive index to reduce gradually then to increase gradually to define lens unit along described direction.Insulation course is disposed between the second electrode lay and third electrode layer.
In one embodiment of this invention, at least two picture element unit of above-mentioned lens unit correspondence.
In one embodiment of this invention, the third electrode that the second above-mentioned electrode covers equal number is to form driver element.
In one embodiment of this invention, the third electrode in above-mentioned same lens unit is partly enabled, and other are not enabled.
The quantity of the third electrode that in one embodiment of this invention, at least two above-mentioned driver elements have is different.
In one embodiment of this invention, the width of the second above-mentioned electrode is identical.
In one embodiment of this invention, the width of above-mentioned at least two the second electrodes is different.
In one embodiment of this invention, above-mentioned the second electrode lay more comprises a plurality of auxiliary electrodes, is positioned at driver element side and auxiliary electrode and is suitable for being transfused to a driving voltage.
In one embodiment of this invention, the spacing of above-mentioned auxiliary electrode equals in fact the width of lens unit
In one embodiment of this invention, above-mentioned third electrode layer more comprises a plurality of auxiliary electrodes, and the second electrode of being floated in auxiliary electrode position comes out.
In one embodiment of this invention, the voltage of above-mentioned third electrode equals in fact the voltage of auxiliary electrode
In one embodiment of this invention, the first above-mentioned electrode layer is transfused to ground voltage, and third electrode is transfused to driving voltage.
Three-dimensional display function is provided when in one embodiment of this invention, above-mentioned liquid crystal lens is driven and forms lens unit.
Based on above-mentioned, in the structural design of liquid crystal lens of the present invention, by third electrode being provided to a kind of driving voltage, make the second electrode of liquid crystal layer both sides and the electric-force gradient between the first electrode present specific distribution, now, the liquid crystal molecule in liquid crystal layer can be driven and have different refractive indexes according to electric-force gradient.Thus, can simplify electrode design and the driving method of liquid crystal lens, and can make display device by the driving of liquid crystal lens, there is the function of plane display mode and the switching of stereo display pattern.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate appended graphic being described in detail below.
Accompanying drawing explanation
Figure 1A is the sectional view of one embodiment of the invention liquid crystal lens.
Figure 1B is lens unit the L refractive index of AA ' and the graph of a relation of position in the horizontal direction of the liquid crystal lens in Figure 1A.
Fig. 2 is the sectional view of one embodiment of the invention liquid crystal lens.
Fig. 3 is the sectional view of one embodiment of the invention liquid crystal lens.
Fig. 4 is the sectional view of one embodiment of the invention liquid crystal lens.
Fig. 5 is the sectional view of one embodiment of the invention liquid crystal lens.
Fig. 6 is the sectional view of one embodiment of the invention liquid crystal lens.
Fig. 7 is the sectional view of one embodiment of the invention display device.
In figure: 10a, 10b, 10c, 10d, 10e, 10f, 2 liquid crystal lens, 100 first substrates, 1100 display panels, 1102 picture element unit, 200 second substrates, 300 liquid crystal layers, 410 first electrode layers, 420a, 420b, 420c, 420d, 420e, 420f the second electrode lay, 421 second electrodes, 430 third electrode layers, 431 third electrodes, 425,427,435,437 auxiliary electrodes, 450a, 450b, 450c, 450d, 450e, 450f driver element, 500 insulation courses, AA ' horizontal direction, L lens unit, Q curve.
Embodiment
Figure 1A is the sectional view of one embodiment of the invention liquid crystal lens, please refer to Figure 1A, the liquid crystal lens 10a of the present embodiment comprises first substrate 100, second substrate 200, liquid crystal layer 300, the first electrode layer 410, the second electrode lay 420a, third electrode layer 430 and insulation course 500.
In detail, liquid crystal layer 300 is disposed between first substrate 100 and second substrate 200.The first electrode layer 410 is disposed between first substrate 100 and liquid crystal layer 300.The second electrode lay 420a is disposed between second substrate 200 and liquid crystal layer 300, and the second electrode lay 420a comprises a plurality of the second electrodes 421 of floating.Third electrode layer 430 is disposed between the second electrode lay 420a and second substrate 200, and third electrode layer 430 comprises a plurality of third electrodes 431.Insulation course 500 is disposed between the second electrode lay 420a and third electrode layer 430.In the present embodiment, first substrate 100 and second substrate 200 are for example glass substrates, and in other embodiment, first substrate 100 and second substrate 200 also can adopt the transparency carrier of other materials.The material of the first electrode layer 410, the second electrode lay 420a and third electrode layer 430 can be for example indium tin oxide (ITO), indium-zinc oxide (IZO) or other suitable transparent conductive materials.The material of insulation course 500 can be silicon nitride or monox, but not as limit, the material of insulation course 500 also can be other transparent insulation material.
Particularly, each second electrode 421 covers in third electrode 431 at least one position to form a plurality of driver element 450a, and driver element 450a arranges along horizontal direction AA '.For example, in the present embodiment, in each driver element 450a, each second electrode 421 covers three third electrodes 431.That is each driver element 450a has the third electrode 431 of equal number in the present embodiment.In addition, each of the present embodiment the second electrode 421 can have identical width, so each driver element 450a of the present embodiment has in fact identical structural design.But, above-mentioned number of electrodes only illustrates, and in other embodiment, each second electrode 421 can cover two third electrodes 431 or three above third electrodes 431, even third electrodes 431.
Liquid crystal layer 300 must be provided the electric field of specific distribution kenel and realize to have required index distribution the optical effect that solid lens is general.Therefore, at each driver element 450a, have under same structure design, first electrode layer 410 of the present embodiment can be transfused to ground voltage, and the third electrode 431 of part is transfused to driving voltage, and other third electrode 431 is not transfused to driving voltage.Thus, the second electrode 421 of floating can have corresponding coupled voltages because of the third electrode that is transfused to driving voltage 431 of its below.And the coupled voltages that the second electrode 421 has can form the electric field that drives liquid crystal layer 300 with the ground voltage of the first electrode layer 410.That is to say, in each driver element 450a, the quantity of driven third electrode 431 can be inconsistent, and then make coupled voltages difference on each second electrode 421 so that required Electric Field Distribution to be provided.
If in single driver element 450a, there is more third electrode 431 and be transfused to driving voltage, the second corresponding electrode 421 can be subject to compared with large voltage coupling effect and and between the first electrode layer 410, form stronger electric field.If in each driver element 450a, there is less third electrode 431 and be transfused to driving voltage, the second corresponding electrode 421 can be subject to compared with little voltage coupling effect and and between the first electrode layer 410, form weak electric field.Therefore,, as long as control the quantity of the third electrode 431 that is transfused to driving voltage, between first substrate 100 and second substrate 200, along horizontal direction AA ', can produce required Electric Field Distribution.In other words, the third electrode 431 that the present embodiment can only be used a kind of driving voltage to put in third electrode layer 430 just can be realized needed lens effect, does not need to use multiple driving voltage to input to different electrodes.So the driving method of liquid crystal lens 10a is simple and easy and contribute to reduce the complicacy of driving circuit.
Liquid crystal layer 300 is subject to the driving of the first electrode layer 410, the second electrode lay 420a and third electrode layer 430, can there is different refractive indexes in zones of different, wherein for example along continuous straight runs AA ' reduces then to increase gradually the refractive index of liquid crystal layer 300 gradually or along continuous straight runs AA ' increases and then reduces gradually gradually, and defines lens unit L at this.It is worth mentioning that, the liquid crystal lens 10a of the present embodiment only illustrates a lens unit L and describes, but in other embodiment, liquid crystal lens 10a can be consisted of a plurality of lens unit L.
In more detail, Figure 1A represents to be transfused to driving voltage to be marked with the third electrode 431 of oblique line, and the third electrode 431 of unmarked oblique line is not to be transfused to driving voltage.Suppose that the predetermined Electric Field Distribution that will form of liquid crystal lens 10a is that along continuous straight runs AA ' first reduces to increase gradually more gradually,, with five driver element 450a that Figure 1A was illustrated, the type of drive of liquid crystal lens 10a is as described below.In outermost two driver element 450a, all third electrodes 431 are all transfused to driving voltage (be enabled or be energized).Middle driver element 450a only has a third electrode 431 to be transfused to driving voltage.In remaining two driver element 450a, there are respectively two third electrodes 431 and be transfused to driving voltage.Thus, the index distribution of liquid crystal layer 300 can define single lens unit L.
Figure 1B is the lens unit L index distribution schematic diagram of AA ' in the horizontal direction of the liquid crystal lens in Figure 1A, and wherein curve Q represents the index distribution of liquid crystal lens 10a of the present invention.Please refer to Figure 1B, in liquid crystal lens 10a, the third electrode 431 quantity along continuous straight runs AA ' that are transfused to driving voltage in five driver element 450a change and provide the electric field of gradient distribution to liquid crystal layer 300.Thus, the liquid crystal molecule in liquid crystal layer 300 in the horizontal direction AA ' is upper, can along with the gradient of electric field, distribute and have different arrangement modes to produce different refractive indexes.From Figure 1B, the refractive index of liquid crystal layer 300 can reduce then to increase gradually by along continuous straight runs AA ' gradually.But, above-mentioned variation tendency is only the use illustrating, not in order to limit the present invention.In general, the relation of the refractive index of liquid crystal layer 300 size and electric field level can determine depending on the liquid crystal material of liquid crystal layer 300.Therefore, Electric Field Distribution is along continuous straight runs AA ' while first reducing gradually to increase gradually again, and the refractive index of liquid crystal layer 300 can along continuous straight runs AA ' reduces then to increase gradually or along continuous straight runs AA ' increases gradually and then reduces gradually to define corresponding lens unit L gradually.
In addition, in the lens unit L due to liquid crystal lens 10a, driven driver element 450a presents symmetrical, so the refractive index profile of Figure 1B represents that lens unit L presents symmetrical in fact index distribution on AA ' in the horizontal direction.Thus, in the present embodiment, by the gradient of electric field, distribute, make the index distribution of the liquid crystal lens 10a of the present embodiment can approach the optical effect of solid lens.Furthermore, if suitably control and impose on the driving voltage on liquid crystal lens 10a, can regulate and control the refractive index in liquid crystal lens 10a, and the focal length of liquid crystal lens 10a is changed thereupon, therefore, liquid crystal lens 10a can have the function of focusing.
Certainly the electrode number that the present invention does not limit the third electrode 431 of switching in each driver element 450a needs difference, that is each second electrode 421 below, and the number of third electrode 431 that is provided driving voltage is not identical.In other embodiment, the width of the second electrode 421 can be optionally different, and the quantity of the third electrode 431 that any two driver elements 450a has also can be optionally different.For example, liquid crystal lens 10b as shown in Figure 2, wherein the width of the second electrode 421 is identical, but the third electrode configuring in each driver element 450b 431 numbers are different, can also reach and in liquid crystal lens 10b, form the effect that voltage gradient distributes.
Fig. 2 represents to be transfused to driving voltage to be marked with the third electrode 431 of oblique line, and for four driver element 450b in single the lens unit L of liquid crystal lens 10b, the type of drive of liquid crystal lens 10b is as described below.All third electrodes 431 are all transfused to driving voltage, yet, at outermost two driver element 450b, there are three third electrodes 431, and two middle driver element 450b only have two third electrodes 431.Thus, in the lens unit L at liquid crystal lens 10b, outermost two driver element 450b have more third electrode 431 numbers, the distribution of the electric-force gradient in the lens unit L of liquid crystal lens 10b can reduce then to increase gradually by along continuous straight runs AA ' gradually, and then makes the refractive index of liquid crystal layer 300 on AA ', present the index distribution that height rises and falls in the horizontal direction.
In addition, the third electrode 431 that Fig. 2 illustrates is all transfused to driving voltage, but in other embodiment, above-mentioned each driver element 450b can only have third electrode 431 ground of part to be transfused to driving voltage, for example, for outermost driver element 450b, optionally only there are two third electrodes 431 to be transfused to driving voltage.
In other embodiment, liquid crystal lens 10c as shown in Figure 3, in a lens unit L, it is incomplete same in the design of width that driver element 450c has the second electrode 421, and each driver element 450c disposes the third electrode 431 of similar number.
Fig. 3 represents to be transfused to driving voltage to be marked with the third electrode 431 of oblique line, and for liquid crystal lens 10c, four driver element 450c in single lens unit L selectively adopt following manner to drive to provide the optical effect that is similar to solid lens.All third electrodes 431 are all transfused to driving voltage, yet, the wider width of the second electrode 421 in outermost two driver element 450c, and the width of the second electrode 421 of two middle driver element 450c is narrower.Thus, in the lens unit L of liquid crystal lens 10c, the suffered coupling effect of the second electrode 421 of outermost two driver element 450c is different from the suffered coupling effect of the second electrode 421 of two driver element 450c in the middle of being positioned at, therefore the distribution of the electric-force gradient in the lens unit L of liquid crystal lens 10c can increase and then weaken gradually by along continuous straight runs AA ' gradually, and then makes the refractive index of liquid crystal layer 300 on AA ', present the index distribution that height rises and falls in the horizontal direction.
In the above-described embodiments, the third electrode 431 that only uses a kind of driving voltage to put in third electrode layer 430 just can be realized needed lens effect, does not need to use multiple driving voltage to input to different electrodes.So the driving method of liquid crystal lens 10a-10c is quite simple and easy and contribute to reduce the complicacy of driving circuit.
Fig. 4 is the sectional view of another embodiment of the present invention liquid crystal lens.Please refer to Fig. 4, the liquid crystal lens 10d of the present embodiment is similar to the liquid crystal lens 10a-c of Figure 1A, Fig. 2 and Fig. 3, the difference that the present embodiment is different from previous embodiment is mainly that third electrode layer 430 more comprises a plurality of auxiliary electrodes 435 and 437, and the second electrode 421 of being floated in auxiliary electrode 435 and 437 positions comes out.With the design of the present embodiment, auxiliary electrode 435 and 437 spacing equal in fact the width of lens unit L.In addition,, when liquid crystal lens 10d is driven, the driving voltage that auxiliary electrode 435 and 437 is transfused to can equal in fact the electric drive pressure that third electrode 431 is transfused to.
Fig. 4 represents to be transfused to driving voltage to be marked with the third electrode 431 of oblique line with auxiliary electrode 435 and 437.For single the lens unit L of liquid crystal lens 10d, the width of the second electrode 421 of four driver element 450d is incomplete same, and third electrode 431 numbers that each driver element 450d has are also incomplete same.In addition, six driver element 450d between auxiliary electrode 435 and 437 and auxiliary electrode 435 and 437 sides away from first substrate 100 do not have the second electrode 421 to cover.The auxiliary electrode 435 and 437 that is positioned at lens unit L two ends is transfused to driving voltage, and the second electrode 421 of being floated comes out, so the liquid crystal molecule in liquid crystal layer 300 can be subject to present more significant refractive index fluctuation compared with large electric field driven at lens unit L two ends.
In addition, in the liquid crystal lens 10d of above-described embodiment, the width of the second electrode 421 of driver element 450d is not quite similar, and third electrode 431 numbers of driver element 450d are also not quite similar, yet the liquid crystal lens 10d of the present embodiment is not limited to this, and can other forms present example liquid crystal lens 10e as shown in Figure 5.Please refer to Fig. 5, the liquid crystal lens 10e of the present embodiment is similar to the liquid crystal lens 10d of Fig. 4, difference is in liquid crystal lens 10e, each driver element 450e has the second electrode 421 of same widths, and each driver element 450e has the number of identical third electrode 431, and similar to liquid crystal lens 10d about the technology of liquid crystal lens 10e, repeat no more.
In the present embodiment, auxiliary electrode 435,437 is transfused to identical driving voltage with all third electrodes 431 of driver element 421 and can in lens unit L, forms the electric field of graded.Therefore,, when all driver element 450e have same structure design and adopt identical type of drive to drive, lens unit L also can provide the optical effect as solid lens.That is to say having under the setting of auxiliary electrode 435,437, a plurality of driver element 450e that the present invention does not limit to lens unit L especially need have different structure designs or adopt different driving mode to drive.
Fig. 6 is the sectional view of another embodiment of the present invention liquid crystal lens.Please refer to Fig. 6, the liquid crystal lens 10f of the present embodiment is similar to the liquid crystal lens 10a-c of Figure 1A, Fig. 2 and Fig. 3, difference is that the second electrode lay 420f more comprises that a plurality of auxiliary electrodes 425 and 427 are positioned at by driver element 450f, and the spacing of auxiliary electrode 425 and 427 equals in fact the width of lens unit L, in addition, auxiliary electrode 425 and 427 is suitable for being transfused to a driving voltage.That is to say, the Main Differences of the embodiment of the present embodiment and Fig. 5 is, the present embodiment is arranged at auxiliary electrode 425,427 in the second electrode lay 420f.
Now, auxiliary electrode 425,427 and the second electrode 421 are same rete, and driver element 450f is arranged between two auxiliary electrodes 425,427.When driving liquid crystal lens 10f, auxiliary electrode 425,427 can be transfused to driving voltage to make the refractive index fluctuation of lens unit L more remarkable at the L shaped one-tenth of lens unit compared with large electric field.With the present embodiment, the driving voltage that inputs to auxiliary electrode 425,427 optionally identical or be different from input to third electrode 431 driving voltage so that the realistic design requirement of the index distribution of liquid crystal layer 300.In other words, the present embodiment can only be used two kinds or a kind of driving voltage to put on third electrode 431 just can realize needed lens effect with auxiliary electrode 425,427, does not need to use two or more driving voltages to input to different electrodes.So the driving method of liquid crystal lens 10f is simple and easy and contribute to reduce the complicacy of driving circuit.
Fig. 7 is the sectional view of one embodiment of the invention display device.Please refer to Fig. 7, the display device 1000 of the present embodiment comprises display panel 1100 and liquid crystal lens 20, and wherein display panel 1100 comprises a plurality of picture elements unit 1102, and liquid crystal lens 20 is disposed on display panel 1100.The display panel 1100 of the present embodiment can be display panels, organic electric-excitation luminescent displaying panel, electric slurry display panel, electrophoretic display panel or Field Emission Display panel etc.Yet, above are only and illustrate, the present invention does not limit the kind of display panel 1100, and in other embodiments, display panel 1100 can be also the display panel of other types.In addition, liquid crystal lens 20 can be above-described embodiment liquid crystal lens 10a-10f one of them, therefore the technical characterictic about liquid crystal lens 20 can, with reference to previous embodiment, repeat no more.
In display device 1000 of the present invention, each the lens unit L in liquid crystal lens 20 is corresponding at least two picture element unit 1102.While defining lens unit L when liquid crystal lens 20 driven (with reference to the type of drive of foregoing liquid crystal lens 10a-10f), can provide three-dimensional display function.In detail, when in lens unit L, corresponding two picture element unit 1102 show respectively the image of left eye and right eye, the image of left eye and right eye will be projeced into left eye and the visible viewpoint of right eye respectively through the optical effect of lens unit L.When liquid crystal lens 20 is not driven, the shown image of display panel 110 can directly penetrate liquid crystal lens 20.So whether display device 1000 is can be by the driving of liquid crystal lens 20 to switch the function of carrying out plane display mode and stereo display pattern.
In addition, in lens unit L, corresponding picture element unit 1102 is when more than two, the optical effect of lens unit L can be by the shown image projection of display panel 110 in plural viewpoint to realize many kens (multi-views) stereo display effect.Therefore, Bu Te other Di Authority of the present invention limits the quantity of the picture element unit 1102 that each lens unit L is corresponding.
In sum, in display device of the present invention and liquid crystal lens, liquid crystal lens disposes the first electrode layer, the second electrode lay and third electrode layer.The second electrode in the second electrode lay presents floating state and covers third electrode in third electrode layer to form a plurality of driver elements.Now, the third electrode in third electrode layer is provided driving voltage and can makes the second electrode of floating and the first electrode layer generation electric field in the second electrode lay.If the second electrode has covered the third electrode that is transfused to driving voltage more, the suffered coupled electric field of liquid crystal layer is larger.Therefore, if there is separately the third electrode that is transfused to driving voltage of different numbers in a plurality of driver elements, or if the width of the second electrode is different in a plurality of driver element, in liquid crystal layer, can be subject to the electric field action that gradient distributes and presents the graded of refractive index.That is to say, the type of drive by controlling the electrode in liquid crystal lens, can regulate and control the refractive index in liquid crystal lens.By this, display device of the present invention and liquid crystal lens can provide a kind of driving voltage in third electrode layer, make the liquid crystal molecule in liquid crystal layer according to driving voltage, have different refractive indexes.Thus, can simplify electrode design and the driving method of liquid crystal lens, and can make display device by the driving of liquid crystal lens, there is the function of plane display mode and the switching of stereo display pattern.
Although the present invention discloses as above with embodiment; so it is not in order to limit the present invention; under any, in technical field, have and conventionally know the knowledgeable; without departing from the spirit and scope of the present invention; when doing a little change and retouching, therefore protection scope of the present invention is when being as the criterion depending on the accompanying claim person of defining.
Claims (22)
1. a liquid crystal lens, is characterized in that, comprising:
One first substrate;
One second substrate;
One liquid crystal layer, is disposed between this first substrate and this second substrate;
One first electrode layer, is disposed between this first substrate and this liquid crystal layer;
One the second electrode lay, is disposed between this second substrate and this liquid crystal layer, and this second electrode lay comprises a plurality of the second electrodes of floating;
One third electrode layer, be disposed between this second electrode lay and this second substrate, and this third electrode layer comprises a plurality of third electrodes, and respectively this second electrode covers at least one position in those third electrodes, to form a plurality of driver elements, those driver elements are arranged along a direction, and wherein this liquid crystal layer is subject to the driving of this first electrode layer, this second electrode lay and this third electrode layer and presents refractive index to reduce gradually in the direction then to increase gradually to define a lens unit; And
One insulation course, be disposed between this second electrode lay and this third electrode layer, this first electrode layer is transfused to a ground voltage, third electrode be partly or entirely transfused to a driving voltage, the second electrode can have corresponding coupled voltages because of the third electrode that is transfused to driving voltage of its below, and the ground voltage of the coupled voltages that the second electrode has and the first electrode layer forms the electric field that drives liquid crystal layer.
2. liquid crystal lens according to claim 1, is characterized in that: those third electrodes that respectively this second electrode covers equal number are to form those driver elements.
3. liquid crystal lens according to claim 1, is characterized in that: those third electrodes in same lens unit are partly enabled, and other are not enabled.
4. liquid crystal lens according to claim 1, is characterized in that: the quantity of those third electrodes that at least two driver elements have is different.
5. liquid crystal lens according to claim 1, is characterized in that: the width of those the second electrodes is identical.
6. liquid crystal lens according to claim 1, is characterized in that: the width of at least two the second electrodes is different.
7. liquid crystal lens according to claim 1, is characterized in that: this second electrode lay more comprises a plurality of auxiliary electrodes, is positioned at those driver elements sides and those auxiliary electrodes and is suitable for being transfused to a driving voltage.
8. liquid crystal lens according to claim 7, is characterized in that: the spacing of those auxiliary electrodes equals the width of this lens unit.
9. liquid crystal lens according to claim 1, is characterized in that: this third electrode layer more comprises a plurality of auxiliary electrodes, and those second electrodes of being floated in those auxiliary electrode positions come out.
10. liquid crystal lens according to claim 9, is characterized in that: the voltage of those third electrodes equals the voltage of those auxiliary electrodes.
11. 1 kinds of display device, is characterized in that, comprising:
One display panel, has a plurality of picture elements unit; And
One liquid crystal lens, is disposed on this display panel, and this liquid crystal lens comprises:
One first substrate;
One second substrate;
One liquid crystal layer, is disposed between this first substrate and this second substrate;
One first electrode layer, is disposed between this first substrate and this liquid crystal layer;
One the second electrode lay, is disposed between this second substrate and this liquid crystal layer, and this second electrode lay comprises a plurality of the second electrodes of floating;
One third electrode layer, be disposed between this second electrode lay and this second substrate, and this third electrode layer comprises a plurality of third electrodes, and respectively this second electrode covers at least one position in those third electrodes, to form a plurality of driver elements, those driver elements are arranged along a direction, and wherein this liquid crystal layer is subject to the driving of this first electrode layer, this second electrode lay and this third electrode layer and presents refractive index to reduce gradually in the direction then to increase gradually to define a lens unit; And
One insulation course, be disposed between this second electrode lay and this third electrode layer, this first electrode layer is transfused to a ground voltage, third electrode be partly or entirely transfused to a driving voltage, the second electrode can have corresponding coupled voltages because of the third electrode that is transfused to driving voltage of its below, and the ground voltage of the coupled voltages that the second electrode has and the first electrode layer forms the electric field that drives liquid crystal layer.
12. display device according to claim 11, is characterized in that: at least two picture element unit of this lens unit correspondence.
13. display device according to claim 11, is characterized in that: those third electrodes that respectively this second electrode covers equal number are to form those driver elements.
14. display device according to claim 11, is characterized in that: those third electrodes in same lens unit are partly enabled, and other are not enabled.
15. display device according to claim 11, is characterized in that: the quantity of those third electrodes that at least two driver elements have is different.
16. display device according to claim 11, is characterized in that: the width of those the second electrodes is identical.
17. display device according to claim 11, is characterized in that: the width of at least two the second electrodes is different.
18. display device according to claim 11, is characterized in that: this second electrode lay more comprises a plurality of auxiliary electrodes, are positioned at those driver elements sides and those auxiliary electrodes and are suitable for being transfused to a driving voltage.
19. display device according to claim 18, is characterized in that: the spacing of those auxiliary electrodes equals the width of this lens unit.
20. display device according to claim 11, is characterized in that: this third electrode layer more comprises a plurality of auxiliary electrodes, and those second electrodes of being floated in those auxiliary electrode positions come out.
21. display device according to claim 20, is characterized in that: the voltage of those third electrodes equals the voltage of this auxiliary electrode.
22. display device according to claim 11, is characterized in that: this liquid crystal lens provides a three-dimensional display function when being driven and forming this lens unit.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104330933B (en) * | 2012-09-05 | 2017-07-18 | 京东方科技集团股份有限公司 | Array base palte and display device |
| CN103091930B (en) * | 2013-01-30 | 2016-05-11 | 深圳市华星光电技术有限公司 | A kind of liquid crystal lens and 3 d display device |
| CN103091931A (en) * | 2013-01-30 | 2013-05-08 | 深圳市华星光电技术有限公司 | Liquid crystal lens and stereo display device |
| CN103454825B (en) * | 2013-09-30 | 2015-07-08 | 深圳超多维光电子有限公司 | Liquid crystal lens and 2D / 3D image display device |
| CN103487963B (en) * | 2013-09-30 | 2016-03-30 | 深圳超多维光电子有限公司 | 2D/3D display switching device and driving method |
| US9591298B2 (en) | 2013-09-30 | 2017-03-07 | Superd Co. Ltd. | System and method for two-dimensional (2D) and three-dimensional (3D) display |
| CN104317078B (en) * | 2014-10-24 | 2017-01-25 | 华中科技大学 | Area array electronically-controlled liquid crystal light-diverging micro-cylinder chip based on dual voltage signal drive control |
| CN105572930A (en) * | 2016-03-23 | 2016-05-11 | 京东方科技集团股份有限公司 | Display module and display system |
| CN113253485A (en) * | 2016-12-27 | 2021-08-13 | 三井化学株式会社 | Lens and eyewear |
| CN106647092A (en) | 2017-01-04 | 2017-05-10 | 京东方科技集团股份有限公司 | Liquid crystal lens, lens assembly, optical device and display unit |
| CN106646950B (en) * | 2017-01-04 | 2019-07-02 | 京东方科技集团股份有限公司 | A kind of liquid crystal lens and 3D display device |
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| JP5334116B2 (en) * | 2009-07-07 | 2013-11-06 | 秋田県 | Low voltage liquid crystal lens |
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| CN101010619A (en) * | 2004-08-26 | 2007-08-01 | 财团法人秋田企业活性化中心 | Optical element |
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