CN103869557A - Blue phase liquid crystal display device - Google Patents
Blue phase liquid crystal display device Download PDFInfo
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- CN103869557A CN103869557A CN201410113969.XA CN201410113969A CN103869557A CN 103869557 A CN103869557 A CN 103869557A CN 201410113969 A CN201410113969 A CN 201410113969A CN 103869557 A CN103869557 A CN 103869557A
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Abstract
A blue phase liquid crystal display device comprises a first substrate, a second substrate arranged opposite to the first substrate, and a blue phase liquid crystal layer located between the first substrate and the second substrate. The first substrate is provided with a plurality of first strip-shaped electrodes, and the second substrate is provided with a plurality of second strip-shaped electrodes, the first strip-shaped electrodes and the second strip-shaped electrodes are located between the first substrate and the second substrate, and each first strip-shaped electrode is located between every two adjacent second strip-shaped electrodes. The blue phase liquid crystal display device has a low driving voltage and high transmittance.
Description
Technical field
The present invention relates to a kind of technical field of liquid crystal display, and be particularly related to a kind of blue phase liquid crystal display device.
Background technology
In recent years, along with the development of display technique, liquid crystal display is applied to more and more widely as in the display device of the Portable movable such as smart mobile phone, panel computer electronic product.
The liquid crystal that traditional liquid crystal display adopts is divided into three kinds of nematic phase, smectic phase and cholesteric phases; for fast moving scene; traditional liquid crystal display there will be the phenomenon such as streaking and dynamic fuzzy conventionally, and its main cause is because the response time of liquid crystal molecule causes not soon.
With now widely used liquid crystal display with compared with liquid crystal material, blue phase liquid crystal has following four outstanding advantages: the response time of (1) blue phase liquid crystal is in sub-millisecond scope, it is without adopting overdrive technique (Over Drive), high-speed driving more than 240Hz can be realized, thereby the dynamic fuzzy of moving image can be effectively reduced.In the time adopting red-green-blue light emitting diode (RGB-LED) to do backlight, without color filter film, utilize blue phase liquid crystal can realize field sequential color sequential and show; (2) blue phase liquid crystal does not need the necessary oriented layer of other various display modes, has not only simplified manufacturing process, has reduced cost yet; (3) in macroscopic view, blue phase liquid crystal is optically isotropic, thereby makes blue phase liquid crystal display device have the good feature of wide, the dark state in visual angle; (4) need only the thick penetration depth that exceedes electric field of blue phase liquid crystal box box, the variation that liquid crystal cell box is thick just can be ignored the impact of transmissivity, and this specific character is particularly suitable for manufacturing giant-screen or veneer liquid crystal indicator.
Figure 1 shows that the structural representation of existing blue phase liquid crystal display device, Figure 2 shows that the transmitance schematic diagram of the blue phase liquid crystal display device shown in Fig. 1.As illustrated in fig. 1 and 2, in existing blue phase liquid crystal display device 100, blue phase liquid crystal layer 16 is between top glass substrate 11 and lower glass substrate 12, being arranged with width in parallel at lower glass substrate 12 upper surfaces is that w spacing is the strip shaped electric poles 13 of L, is respectively arranged with polaroid 14 and lower polaroid 15 at the upside of top glass substrate 11 and the downside of lower glass substrate 12.In the structure of existing blue phase liquid crystal display device 100, as shown in Figure 2, the horizontal component of electric field of planar strip electrode 13 upper areas is weak or there is no a horizontal component of electric field, thereby cause planar strip electrode 13 tops can form the lower dark space 17 of transmitance as shown in Figure 2, cause the transmitance of blue phase liquid crystal display device 100 very low, and then affect the display brightness of blue phase liquid crystal display 100.
In the prior art, in order to obtain higher transmitance, one of conventional method is to optimize the electrode structure of blue phase liquid crystal display device 100, for example reduce the area of the dark space 17 of strip shaped electric poles 13 tops by the spacing L that reduces the width w of strip shaped electric poles 13 or increase between strip shaped electric poles 13, to improve the transmitance of blue phase liquid crystal display device 100.But, on the one hand, according to current manufacture craft, making the more difficult making of strip shaped electric poles 13 that width is less realizes, on the other hand, above-mentioned blue phase liquid crystal display device 100 itself needed very high driving voltage, for example when adopt Kerr constanr K be about 10nm/V
2time blue phase liquid crystal material time, driving voltage is about 50V, the spacing increasing between strip shaped electric poles 13 can further increase its driving voltage, even can reach 60～100V, and existing drive integrated circult there is no method so high driving voltage is provided, cause polymer stabilizing blue phase liquid crystal being applied in to a certain extent in display to be restricted.
Summary of the invention
Based on the problem that in existing blue phase liquid crystal display device, existing driving voltage is high, transmitance is low, the invention provides one and can effectively reduce its driving voltage, can keep again it to there is the blue phase liquid crystal display compared with high permeability.
It is to adopt following technical scheme to realize that the present invention solves its technical matters.
The present invention proposes a kind of blue phase liquid crystal display device, comprises first substrate, and the second substrate that is oppositely arranged of first substrate and the blue phase liquid crystal layer between first substrate and second substrate.First substrate is provided with multiple the first strip shaped electric poles, second substrate is provided with multiple the second strip shaped electric poles, multiple the first strip shaped electric poles and multiple the second strip shaped electric poles are between first substrate and second substrate, and each the second strip shaped electric poles is between two adjacent the first strip shaped electric poles.
In preferred embodiment of the present invention, above-mentioned each the first strip shaped electric poles comprises the first transparent insulation strip projected parts, the first transparency electrode and the second transparency electrode.The first transparent insulation strip projected parts is outstanding to second substrate by first substrate, and has the first relative side and the second side.The first transparency electrode covers the first side, and the second transparency electrode covers the second side.Above-mentioned each the second strip shaped electric poles comprises the second transparent insulation strip projected parts, the 3rd transparency electrode and the 4th transparency electrode.The second transparent insulation strip is outstanding to first substrate by second substrate, and there is the 3rd relative side and the 4th side, the 3rd side of each the second strip shaped electric poles and the first side of each the first strip shaped electric poles are positioned at the same side, and the 4th side of each the second strip shaped electric poles and the second side of each the first strip shaped electric poles are positioned at the same side.The 3rd transparency electrode covers the 3rd side, and the 4th transparency electrode covers the 4th side.
In preferred embodiment of the present invention, the xsect of above-mentioned this first transparent insulation strip projected parts and this second transparent insulation projection is trapezoidal.
In preferred embodiment of the present invention, above-mentioned the first transparent insulation strip projected parts has the first height, and this second transparent insulation strip projected parts has the second height, and the first height and the second height sum are less than the distance between first substrate and second substrate.
In preferred embodiment of the present invention, above-mentioned the first electrode and third electrode are pixel electrode, and the second electrode and the 4th electrode are public electrode.
In preferred embodiment of the present invention, above-mentioned the first transparency electrode, the second transparency electrode, the 3rd transparency electrode and the 4th transparency electrode are to be made up of transparent indium-tin-oxide material, and thickness is 40～60nm.
In preferred embodiment of the present invention, above-mentioned multiple the first strip shaped electric poles is equidistantly arranged at first substrate, and each the first strip shaped electric poles has the first spacing distance on first substrate, multiple the second strip shaped electric poles are equidistantly arranged at second substrate, and each the second strip shaped electric poles has the second spacing distance on second substrate, and the first spacing distance equals the second spacing distance.
In preferred embodiment of the present invention, above-mentioned multiple the first strip shaped electric poles are parallel to each other, and multiple the second strip shaped electric poles are parallel to each other, and each the second strip shaped electric poles is positioned at the position, middle of two adjacent the first strip shaped electric poles.
In preferred embodiment of the present invention, above-mentioned first substrate comprises driving element array base palte and the polarizer, multiple the first strip shaped electric poles are arranged on driving element array base palte, the polarizer is arranged at the side of driving element array base palte away from blue phase liquid crystal layer, and second substrate comprises colored optical filtering substrates and the polarizer, the polarizer is arranged at the side of glass substrate away from blue phase liquid crystal layer.
In preferred embodiment of the present invention, above-mentioned blue phase liquid crystal layer is polymer stabilizing blue phase liquid crystal.
The invention has the beneficial effects as follows, blue phase liquid crystal display device of the present invention is because multiple the second strip shaped electric poles that are arranged at multiple first strip shaped electric poles of first substrate and be arranged at second substrate are between first substrate and second substrate, and each the second strip shaped electric poles is between two adjacent the first strip shaped electric poles, on the one hand, the first strip shaped electric poles that is arranged at first substrate can strengthen the horizontal component of electric field near upper second substrate, be arranged at second substrate the second strip shaped electric poles the horizontal component of electric field that can strengthen near first substrate is set, thereby to a certain degree can effectively reduce driving voltage, on the other hand, in the time that the first strip shaped electric poles and the second strip shaped electric poles are applied to driving voltage, not only between the first strip shaped electric poles of adjacent electrode, can produce horizontal component of electric field, between the second strip shaped electric poles of adjacent electrode, can produce horizontal component of electric field, and also can produce horizontal component of electric field on every first strip shaped electric poles and the second strip shaped electric poles, thereby can effectively reduce dark space, improve transmitance.Therefore, blue phase liquid crystal display device of the present invention can be realized and have lower driving voltage and higher transmitance simultaneously.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of instructions, and for above and other object of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Brief description of the drawings
Figure 1 shows that the structural representation of existing blue phase liquid crystal display device.
Figure 2 shows that the transmitance schematic diagram of the blue phase liquid crystal display device shown in Fig. 1.
Figure 3 shows that the structural representation of the blue phase liquid crystal display device of first embodiment of the invention.
Figure 4 shows that the transmitance schematic diagram of the blue phase liquid crystal display device shown in Fig. 3.
Figure 5 shows that the structural representation of the blue phase liquid crystal display device of second embodiment of the invention.
Figure 6 shows that the transmitance schematic diagram of the blue phase liquid crystal display device shown in Fig. 5.
Figure 7 shows that blue phase liquid crystal display device, the blue phase liquid crystal display device of the second embodiment and driving voltage-transmittance curve figure of existing blue phase liquid crystal display device of first embodiment of the invention.
Embodiment
Technological means and effect of taking for reaching predetermined goal of the invention for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, embodiment, structure, feature and effect thereof to blue phase liquid crystal display device of the present invention, be described in detail as follows.
Figure 3 shows that the structural representation of the blue phase liquid crystal display device of first embodiment of the invention.Please refer to Fig. 3, the blue phase liquid crystal display device 300 of the present embodiment comprises first substrate 20, the second substrate 30 being oppositely arranged with first substrate 20, and blue phase liquid crystal layer 40 between first substrate 20 and second substrate 30.
Particularly, first substrate 20 comprises the first driving substrate 210.First of first substrate 20 drives on substrate 210 and is provided with multiple the first strip shaped electric poles 220, and multiple the first strip shaped electric poles 220 are between first substrate 20 and second substrate 30.Multiple the first strip shaped electric poles 220 are electrically connected with multiple driving element (not shown) of the first driving substrate 210 respectively, to realize multiple the first strip shaped electric poles 220 alive control of being executed.In the present embodiment, first substrate 20 also comprises and is arranged at the polarizer 230 of the first driving substrate 210 away from a side of blue phase liquid crystal layer 40.
Multiple the first strip shaped electric poles 220 are and are arranged in parallel.Each the first strip shaped electric poles 220 comprises the first transparent insulation strip projected parts 222, the first transparency electrode 224 and the second transparency electrode 226.Wherein, the first transparent insulation strip projected parts 222 is the projection towards second substrate 30 directions by first substrate 20, and protrudes the first height H 1 by first substrate 20 towards the direction of second substrate 30.In the present embodiment, the xsect of the first transparent insulation strip projected parts 222 is trapezoidal, and there is the first side 222a, the second side 222b relative with the first side 222a and be connected in the first side 222a and the second side 222b between the first end face 222c and the first bottom surface 222d.In the present embodiment, the xsect of the first transparent insulation strip projected parts 222 is isosceles trapezoid, and the angle that the first side 222a and the first bottom surface 222d form equals the angle that the second side 222b and the first bottom surface 222d form.In the present embodiment, the width w1 of the first end face 222c is less than the width w2 of the first bottom surface 222d.The first transparency electrode 224, the second transparency electrode 226 and the first transparent insulation strip projected parts 222 all extend along same length direction.The first transparency electrode 224 covers the first side 222a, and the second transparency electrode 226 covers the second side 222b.The first transparency electrode 224 and the second transparency electrode 226 are to be for example made up of transparent indium-tin-oxide (ITO) material, and thickness is roughly 40～60nm.In the present embodiment, the first transparency electrode 224 is for example pixel electrode, and the second transparency electrode 226 is for example public electrode.
Hold above-mentionedly, multiple the first strip shaped electric poles 220 are spaced in first substrate 20 equal intervals, and adjacent two the first strip shaped electric poles 220 have the first spacing distance L1 on first substrate 20.In the present embodiment, the first transparency electrode 224 of the second transparency electrode 226 that the first spacing distance L1 refers to first strip shaped electric poles 220 and another adjacent the first strip shaped electric poles 220 on first substrate 20 along the minimum separation distances of the direction vertical with the length direction of the first strip shaped electric poles 220.
Each the second strip shaped electric poles 320 comprises the second transparent insulation strip projected parts 322, the 3rd transparency electrode 324 and the 4th transparency electrode 326.Wherein, the second transparent insulation strip projected parts 322 is the projection towards first substrate 20 directions by second substrate 30, and protrudes the second height H 2 by second substrate 30 towards the direction of first substrate 20.In the present embodiment, the second height H 2 sums of the first height H 1 of the first transparent insulation strip projected parts 222 and the second transparent insulation strip projected parts 322 are less than the distance B between first substrate 20 and second substrate 30.In the present embodiment, the xsect of the second transparent insulation strip projected parts 322 is trapezoidal, and there is the 3rd side 322a, the four side 322b relative with the 3rd side 322a and be connected in the 3rd side 322a and the 4th side 322b between the second end face 322c and the second bottom surface 322d.The 3rd side 322a and the first side 222a are positioned at the same side, and the 4th side 322b and the second side 222b are positioned at the same side.In the present embodiment, the xsect of the second transparent insulation strip projected parts 322 is and shape and the equal-sized isosceles trapezoid of the xsect of the first transparent insulation strip projected parts 222, the angle that the 3rd side 322a and the second bottom surface 322d form equals the angle that the 4th side 322b and the second bottom surface 322d form, and equals the first side 222a of the first transparent insulation strip projected parts 222 and the angle that the first bottom surface 222d forms.In the present embodiment, the width w1 ' of the second end face 322c equals the width of the first end face w1, the width w2 ' of the second bottom surface 322d equals the width w2 of the first bottom surface 222d, same, and the width w1 ' of the second end face 322c is less than the width w2 ' of the second bottom surface 322d.The 3rd transparency electrode 324, the 4th transparency electrode 326 and the second transparent insulation strip projected parts 322 all extend along same length direction.The 3rd transparency electrode 324 covers the 3rd side 322a, and the 4th transparency electrode 326 covers the 4th side 322b.The 3rd transparency electrode 324 and the 4th transparency electrode 326 are to be for example made up of transparent indium-tin-oxide (ITO) material, and thickness is roughly 40～60nm.In the present embodiment, the 3rd transparency electrode 324 is for example pixel electrode, the 4th transparency electrode 326 is for example public electrode, multiple the 3rd transparency electrodes 324 and second drive the pixel electrode driving element (not shown) of substrate 310 to be electrically connected, can be for example in the whole process of a frame picture disply, to give multiple the 3rd transparency electrode 324 identical driving voltage, multiple the 4th transparency electrodes 326 and second drive the common electrode drive element (not shown) of substrate 310 to be electrically connected.
Hold above-mentionedly, multiple the second strip shaped electric poles 320 are equidistantly spaced at second substrate 30, and adjacent two the second strip shaped electric poles 320 have the second spacing distance L2 on second substrate 30.In the present embodiment, the 3rd transparency electrode 324 of the 4th transparency electrode 326 that the second spacing distance L2 refers to second strip shaped electric poles 320 and another adjacent the second strip shaped electric poles 320 on second substrate 30 along the minimum separation distances of the direction vertical with the length direction of the second strip shaped electric poles 320.In the present embodiment, the second spacing distance L2 of the second strip shaped electric poles 320 equals the first spacing distance L1 of the first strip shaped electric poles 220.
In addition, blue phase liquid crystal display device 300 can also comprise the columnar interval portion 10 being connected between first substrate 20 and second substrate 30, columnar interval portion 10 is positioned on the boundary line of neighbor the position corresponding with shading matrix (not shown) on second substrate 30, or is positioned at the periphery non-display area (not shown) of blue phase liquid crystal display device 300.In the present embodiment, the height of columnar interval portion 10 equals the distance B between first substrate 20 and second substrate 30, in the present embodiment, the second height H 2 sums of the first height H 1 of the first transparent insulation strip projected parts 222 and the second transparent insulation strip projected parts 322 are less than the distance B between first substrate 20 and second substrate 30, to prevent from causing because of occurred level displacement between first substrate 20 and second substrate 30 generation of the phenomenon in electrical contact of the first strip shaped electric poles 220 and the second strip shaped electric poles 320.
In the present embodiment, blue phase liquid crystal layer 40 is for example to comprise polymer stabilizing blue phase liquid crystal.
Hold above-mentioned, the blue phase liquid crystal display device 300 of the present embodiment has that multiple the first strip shaped electric poles 220 and multiple the second strip shaped electric poles 320 are arranged at respectively first substrate 20 and second substrate 30 and between first substrate 20 and second substrate 30, and each the second strip shaped electric poles 320 is between two adjacent the first strip shaped electric poles 220.On the one hand, the first strip shaped electric poles 220 that is arranged at first substrate 20 can strengthen the horizontal component of electric field near second substrate 30, be arranged at second substrate 30 the second strip shaped electric poles 320 the horizontal component of electric field that can strengthen near first substrate 20 is set, thereby can effectively reduce driving voltage.On the other hand, in the time that the first strip shaped electric poles 220 and the second strip shaped electric poles 320 are applied to driving voltage, not only between the first transparency electrode 224 of adjacent two the first strip shaped electric poles 220 and the second transparency electrode 226 and between the 3rd transparency electrode 324 of adjacent two the second strip shaped electric poles 320 and the 4th transparency electrode 326, can produce horizontal component of electric field, and also can produce horizontal component of electric field between the first transparency electrode 224 of same the first strip shaped electric poles 220 and the second transparency electrode 226, between the 3rd transparency electrode 324 of same the second strip shaped electric poles 320 and the 4th transparency electrode 326, also can produce horizontal component of electric field, so that the top of each the first strip shaped electric poles 220 and each the second strip shaped electric poles 320 also can produce horizontal component of electric field, thereby can strengthen the transmitance of the first strip shaped electric poles 220 and the second strip shaped electric poles 320 tops, simultaneously, between the first transparency electrode 224 of adjacent the first strip shaped electric poles 220 and the 4th transparency electrode 326 of the second strip shaped electric poles 320 and between the second transparency electrode 226 of adjacent the first strip shaped electric poles 220 and the 3rd transparency electrode 324 of the second strip shaped electric poles 320, can produce oblique electric field, with above-mentioned horizontal component of electric field acting in conjunction, increase the transmitance of whole liquid crystal display area, effectively reduce dark space, improve the transmitance of whole blue phase liquid crystal display device 300.
Fig. 4 is the transmitance schematic diagram of the blue phase liquid crystal display device shown in Fig. 3.As shown in Figure 4, blue phase liquid crystal display device 300 in the present embodiment is improved at the correspondence position horizontal component of electric field of the first strip shaped electric poles 220 and the second strip shaped electric poles 320, not only between the first transparency electrode 224 of adjacent two the first strip shaped electric poles 220 and the second transparency electrode 226 and between the 3rd transparency electrode 324 of adjacent two the second strip shaped electric poles 320 and the 4th transparency electrode 326, can produce horizontal component of electric field, and also can produce horizontal component of electric field between the first transparency electrode 224 of each the first strip shaped electric poles 220 and the second transparency electrode 226 and between the 3rd transparency electrode 324 of each the second strip shaped electric poles 320 and the 4th transparency electrode 326, so that the top of each the first strip shaped electric poles 220 and each the second strip shaped electric poles 320 also can produce horizontal component of electric field, thereby can strengthen the transmitance of the first strip shaped electric poles 220 and the second strip shaped electric poles 320 tops, simultaneously, between the first transparency electrode 224 of adjacent the first strip shaped electric poles 220 and the 4th transparency electrode 326 of the second strip shaped electric poles 320 and between the second transparency electrode 226 of adjacent the first strip shaped electric poles 220 and the 3rd transparency electrode 324 of the second strip shaped electric poles 320, can produce oblique electric field, with above-mentioned horizontal component of electric field acting in conjunction, increase the transmitance of whole liquid crystal display area, effectively reduce dark space, therefore blue phase liquid crystal display device 300 transmitances are improved and promote, the blue phase liquid crystal display device 300 of the present embodiment has compared with high permeability.
Figure 5 shows that the structural representation of the blue phase liquid crystal display device of second embodiment of the invention.Please refer to Fig. 5, the blue phase liquid crystal display device 400 of the present embodiment is roughly the same with blue phase liquid crystal device 300, the difference of the two is that each second strip shaped electric poles 320 ' of blue phase liquid crystal display device 400 is not positioned at the position, middle of two adjacent the first strip shaped electric poles 220 ', but each the second strip shaped electric poles 320 ' moves to left in position, middle near the first adjacent strip shaped electric poles 220 ' of left side.For example, it is adjacent wherein between two strip shaped electric poles 2201 ' and 2202 ' that one of them strip shaped electric poles 3201 ' of the second strip shaped electric poles 320 ' is positioned at the first strip shaped electric poles 220 ', and the center line C21 ' of one of them strip shaped electric poles 3201 ' of the second strip shaped electric poles 320 ' is less than the second strip shaped electric poles 320 ' in the distance of the projection of first substrate 20 ' the center line C21 ' of one of them strip shaped electric poles 3201 ' at the center line C11 ' of the projection of first substrate 20 ' and one of them strip shaped electric poles 2201 ' of the first strip shaped electric poles 220 ' is the distance in the projection of first substrate 20 ' at the center line C12 ' of the projection of first substrate 20 ' and one of them strip shaped electric poles 2202 ' of the first strip shaped electric poles 220 '.In the present embodiment, the center line C11 ' of the projection at the center line C21 ' of one of them strip shaped electric poles 3201 ' of the second strip shaped electric poles 320 ' on first substrate 20 ' and one of them strip shaped electric poles 2201 ' of the first strip shaped electric poles 220 ' equals the center line C12 ' of one of them strip shaped electric poles 2202 ' of the projection of center line C21 ' on first substrate 20 ' and the first strip shaped electric poles 220 ' on the basis of the distance of the projection of first substrate 20 ' in the distance of the projection of first substrate 20 ', the center line C21 ' of one of them strip shaped electric poles 3201 ' of the second strip shaped electric poles 320 ' has moved horizontally 2.0 μ ms towards the center line C11 ' of one of them strip shaped electric poles 2201 ' of the first strip shaped electric poles 220 ' at the projecting direction of first substrate 20 ' in the projection of first substrate 20 '.
Figure 6 shows that the transmitance schematic diagram of the blue phase liquid crystal display device shown in Fig. 5.Please also refer to shown in Fig. 5 and Fig. 6, although the center line C21 ' of one of them strip shaped electric poles 3201 ' of the second strip shaped electric poles 320 ' of the blue phase liquid crystal display device 400 in the present embodiment has moved 2.0 μ ms towards the center line C11 ' of one of them strip shaped electric poles 2201 ' of the first strip shaped electric poles 220 ' at the projecting direction of first substrate 20 ' in the projection of first substrate 20 ', but same, in the present embodiment, blue phase liquid crystal display device 400 not only can produce horizontal component of electric field between the first adjacent strip shaped electric poles 220 ' and the second strip shaped electric poles 320 ', and also can produce horizontal component of electric field at the first strip shaped electric poles 220 ' and the second strip shaped electric poles 320 ' top, thereby can strengthen the transmitance of the first strip shaped electric poles 220 ' and the second strip shaped electric poles 320 ' top, effectively reduce dark space, that is to say, the transmitance of blue phase liquid crystal display device 400 is still improved and promotes, and the impact on its luminance uniformity is less, the blue phase liquid crystal display device 400 of the present embodiment still has compared with high permeability.
Figure 7 shows that blue phase liquid crystal display device, the blue phase liquid crystal display device of the second embodiment and driving voltage-transmittance curve figure of existing blue phase liquid crystal display of first embodiment of the invention.To the blue phase liquid crystal display device 300(analog sample of the first embodiment a), the blue phase liquid crystal display device 400(analog sample of the second embodiment b) and the simulation test that c) undertaken by following condition of existing blue phase liquid crystal display 100(analog sample to obtain driving voltage-transmittance curve figure.
The test condition of analog sample a is for example: first substrate 20 is that the thick D of box is 5.0 μ m with second substrate 30 intervals; The first spacing distance L1 and the second spacing distance L2 equate and are 5.0 μ m; The first height H 1 of the first transparent insulation strip projected parts 222 and the second height H 2 of the second transparent insulation strip projected parts 322 are respectively 2.0 μ m; The width W 2 ' of the second bottom surface 322 of the width W 2 of the first bottom surface 222D of the first transparent insulation strip projected parts 222 and the second transparent insulation strip projected parts 322 equates and is all 5.0 μ m, and the width W 1 ' of the second bottom surface 322d of the width W 1 of the first end face 222c of the first transparent insulation strip projected parts 222 and the second transparent insulation strip projected parts 322 equates and is all 2.0 μ m.Analog sample b is also according to carrying out simulation test as a comparison with the roughly the same condition of analog sample a, difference is, wherein, analog sample b be equal the second strip shaped electric poles 320 ' in the distance of the projection of first substrate 20 ' at the center line C11 ' of the projection of first substrate 20 ' and one of them strip shaped electric poles 2201 ' of the first strip shaped electric poles 220 ' at the center line C21 ' of one of them strip shaped electric poles 3201 ' of the second strip shaped electric poles 320 ' the center line C21 ' of one of them strip shaped electric poles 3201 ' at the center line C12 ' of the projection of first substrate 20 ' and one of them strip shaped electric poles 2202 ' of the first strip shaped electric poles 220 ' on the basis of the distance of the projection of first substrate 20 ', the center line C21 ' of one of them strip shaped electric poles 3201 ' of the second strip shaped electric poles 320 ' has moved 2.0 μ ms towards the center line C11 ' of one of them strip shaped electric poles 2201 ' of the first strip shaped electric poles 220 ' at the projecting direction of first substrate 20 ' in the projection of first substrate 20 '.The test condition of analog sample c is for example that the width w of strip shaped electric poles 13 is 5.0 μ m, and the spacing L between adjacent two strip shaped electric poles 13 is 5.0 μ m.
When simulation test, use identical polymer stabilizing blue phase liquid crystal, the first transparency electrode 224 and the second transparency electrode 226 at each the first strip shaped electric poles 220 apply different driving voltages, the 3rd transparency electrode 324 and the 4th transparency electrode 326 at each the second strip shaped electric poles 320 apply different driving voltages, between each strip shaped electric poles 13, apply different driving voltages.As shown in Figure 7, in the time using identical polymer blue phase liquid crystal material, for example adopt Kerr constanr K is about 13.4nm/V simultaneously
2polymer blue phase liquid crystal material time, existing blue phase liquid crystal display device 100(analog sample c) reaches maximum transmission in the time that driving voltage is 29V, its maximum transmission is far smaller than the transmitance that blue phase liquid crystal display device 300(analog sample in the first embodiment a) reaches during for 29V at driving voltage, also be less than the transmitance that blue phase liquid crystal display device 400(analog sample in the second embodiment b) reaches during for 29V at driving voltage, that is to say, compared with existing blue phase liquid crystal display device 100, the blue phase liquid crystal display device 300 of the first embodiment and the blue phase liquid crystal display device 400 of the second embodiment can either reduce driving voltage also can improve transmitance significantly.
Above blue phase liquid crystal display device provided by the present invention is described in detail, applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (10)
1. a blue phase liquid crystal display device, comprises first substrate, and the second substrate that is oppositely arranged of this first substrate and the blue phase liquid crystal layer between this first substrate and this second substrate, it is characterized in that,
This first substrate is provided with multiple the first strip shaped electric poles, this second substrate is provided with multiple the second strip shaped electric poles, the plurality of the first strip shaped electric poles and the plurality of the second strip shaped electric poles are between this first substrate and this second substrate, and respectively this second strip shaped electric poles is between two adjacent these the first strip shaped electric poles.
2. blue phase liquid crystal display device as claimed in claim 1, is characterized in that,
Respectively this first strip shaped electric poles comprises the first transparent insulation strip projected parts, the first transparency electrode and the second transparency electrode, this the first transparent insulation strip projected parts is outstanding to this second substrate by this first substrate, and there is the first relative side and the second side, this first transparency electrode covers this first side, and this second transparency electrode covers this second side;
Respectively this second strip shaped electric poles comprises the second transparent insulation strip projected parts, the 3rd transparency electrode and the 4th transparency electrode, this the second transparent insulation strip is outstanding to this first substrate by this second substrate, and there is the 3rd relative side and the 4th side, the 3rd side of this second strip shaped electric poles and the first side of this first strip shaped electric poles are positioned at the same side, the 4th side of this second strip shaped electric poles and the second side of this first strip shaped electric poles are positioned at the same side, the 3rd transparency electrode covers the 3rd side, the 4th side that the 4th transparency electrode covers.
3. blue phase liquid crystal display device as claimed in claim 2, is characterized in that, the xsect of this first transparent insulation strip projected parts and this second transparent insulation projection is trapezoidal.
4. blue phase liquid crystal display device as claimed in claim 3, it is characterized in that, this the first transparent insulation strip projected parts has the first height, this the second transparent insulation strip projected parts has the second height, and this first height and this second height sum are less than the distance between this first substrate and this second substrate.
5. blue phase liquid crystal display device as claimed in claim 2, is characterized in that, this first electrode and this third electrode are pixel electrode, and this second electrode and the 4th electrode are public electrode.
6. blue phase liquid crystal display device as claimed in claim 2, is characterized in that, this first transparency electrode, this second transparency electrode, the 3rd transparency electrode and the 4th transparency electrode are to be made up of transparent indium-tin-oxide material, and thickness is 40～60nm.
7. blue phase liquid crystal display device as claimed in claim 1, it is characterized in that, the plurality of the first strip shaped electric poles is equidistantly arranged at this first substrate, and respectively this first strip shaped electric poles has the first spacing distance on this first substrate, the plurality of the second strip shaped electric poles is equidistantly arranged at this second substrate, and respectively this second strip shaped electric poles has the second spacing distance on this second substrate, this first spacing distance equals this second spacing distance.
8. blue phase liquid crystal display device as claimed in claim 7, it is characterized in that, the plurality of the first strip shaped electric poles is parallel to each other, and the plurality of the second strip shaped electric poles is parallel to each other, and respectively this second strip shaped electric poles is positioned at the position, middle of two adjacent these the first strip shaped electric poles.
9. blue phase liquid crystal display device as claimed in claim 1, it is characterized in that, this first substrate comprises driving element array base palte and the polarizer, the plurality of the first strip shaped electric poles is arranged on this driving element array base palte, this polarizer is arranged at the side of this driving element array base palte away from this blue phase liquid crystal layer, and this second substrate comprises colored optical filtering substrates and the polarizer, this polarizer is arranged at the side of this glass substrate away from this blue phase liquid crystal layer.
10. blue phase liquid crystal display device as claimed in claim 1, is characterized in that, this blue phase liquid crystal layer is polymer stabilizing blue phase liquid crystal.
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|---|---|---|---|
| CN201410113969.XA CN103869557A (en) | 2014-03-25 | 2014-03-25 | Blue phase liquid crystal display device |
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| CN201410113969.XA CN103869557A (en) | 2014-03-25 | 2014-03-25 | Blue phase liquid crystal display device |
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| CN110398866A (en) * | 2018-04-24 | 2019-11-01 | 四川大学 | A kind of continuous controllable blue phase liquid crystal display in visual angle |
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