CN102368126A - Blue phase liquid crystal display panel - Google Patents
Blue phase liquid crystal display panel Download PDFInfo
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- CN102368126A CN102368126A CN2011103300678A CN201110330067A CN102368126A CN 102368126 A CN102368126 A CN 102368126A CN 2011103300678 A CN2011103300678 A CN 2011103300678A CN 201110330067 A CN201110330067 A CN 201110330067A CN 102368126 A CN102368126 A CN 102368126A
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Abstract
The invention discloses a blue phase liquid crystal display panel which comprises a first substrate, a second substrate, a blue phase liquid crystal layer and an auxiliary material layer. The first substrate has a plurality of pixel driving units. Each pixel driving unit comprises a pixel electrode and a counter electrode for providing an electric field. The second substrate is disposed opposite to the first substrate. The blue phase liquid crystal layer is sealed between the first substrate and the second substrate. The blue phase liquid crystal layer has a plurality of blue phase liquid crystal molecules, and the blue phase liquid crystal molecules are driven by an electric field. The auxiliary material layer is arranged on the second substrate and positioned between the second substrate and the blue-phase liquid crystal layer, and the auxiliary material layer is not arranged between the first substrate and the blue-phase liquid crystal layer. The blue phase liquid crystal display panel of the invention can obviously reduce the driving voltage of the blue phase liquid crystal display panel and improve the penetration rate of the blue phase liquid crystal display panel by arranging the auxiliary material layer on the single substrate, particularly arranging the auxiliary material layer on the color filter substrate or the opposite substrate.
Description
Technical field
The present invention relates to a kind of display panels, and relate in particular to a kind of blue phase liquid crystal display panel (blue phase liquid crystal display panel).
Background technology
1888 Christian eras; Friedrich Reinitzer places polarizing microscope with cholesterol type benzoate (Cholesteric benzoate); Observe the cholesterol type benzoate even phase (Isotropic) and cholesterol mutually (Cholesteric) can demonstrate different colours (bluish violet and blueness), even and the cholesterol change color phenomenon between mutually exists only in very little temperature range (having only 1 ℃ of temperature range approximately).In 1970 Christian eras, many scientists utilize methods such as analysis by measure, high resolving power differential scanning calorie meter, confirm that aforementioned phenomenon is a kind of new thermodynamically stable phase, and are called blue phase.
Indigo plant has three kinds of out of phase existence mutually, and these three kinds are expressed as BP I, BP II, BP III mutually, and the temperature that BPIII exists be three the highest in mutually, the BP III that in document, mentions is " fog phase ".Compared to the cube structure (cubic) of BP I and BP II, BP III is unformed (amorphous).Under polarizing microscope, observe, BP III does not normally have the fuzzy image of any structure, therefore is difficult to observe under the polarizing microscope.
And the structure of BP I, BP II has been proved, and the elementary cell that constitutes BP I, BP II is " two reverse cylindric " (DTC:double twist cylinder), and such arrangement mode has minimum free energy.In addition, two to reverse the arrangement of cylindrical tube in the space be orthogonal, and such arrangement causes the lattice of defective (defect), and be considered to got into by liquid crystal phase the pre-converted phenomenon (pre-transitional phenomena) of cholesterol phase.Therefore, the blue invalid phase (frustrated phases) that classified as.Utilize experimental discovering such as Bragg diffraction, Kossel diffraction chart, optical texture, crystal growth; BP II is simple cubic structure (SC:simple cubic) (Mol.Cryst.Liq.Cryst.; Vol.465; Pp.283-288,2007), BP I is body-centered cubic structure (BCC:body-centered cubic).Be different from other liquid crystal phase; Like nematic phase (nematic), smectic phase (smectic), even phase (isotropic); Usually BP I, BP II can show color graphics (J.A.C.S, 2008,130 of many tabular (platelet texture) under polarizing microscope; 6326Kikuchiet.al.), this is because lattice period causes due to the Bragg reflection at visible wavelength range.
General liquid crystal has optics out-phase property (optically anisotropic), but blue phase liquid crystal but is to have tropisms (optically isotropic) such as optics.In other words, blue phase liquid crystal has very low or does not even have birefringence (Birefringence).
Because the lattice period of blue phase liquid crystal is the function of visible wavelength, so can produce selectivity " Bragg reflection " (selective Bragg reflection).This specific character makes blue phase liquid crystal can be used in the light valve of rapid answer (fast light modulators).But, no matter in theory still experimentally observation of prediction, blue phase liquid crystal only appear at possess high-purity is arranged, in the molecular material that height revolves optical activity, and the change color of its blue phase exists only in the very little temperature range.Therefore, blue phase liquid crystal is only academicly coming into question usually, but in practical application, does not come into one's own.
Over past ten years, for the display quality that makes display panels faces the display quality of driving in cathode-ray tube (CRT), the blue phase liquid crystal with rapid answer characteristic receives the attention of science and industrial community again.For the needs on using, blue phase liquid crystal must possess has broad temperature application range, so the different techniques development is suggested in succession.For example, utilize the characteristic (macromolecule reticulate texture) of stabilizing polymer can be present in the blue phase (Nature materials, 2002,1,64) in the broad temperature range to produce.In addition, in 2002, people such as Kikuchi added a spot of high polymer monomer and light initiator in the blue phase liquid crystal, and irradiation produces as the stable blue phase of gel structure in blue phase temperature range, successful produced the blue phase that temperature range is about 60 ℃.
Though blue phase liquid crystal has advantages such as tropism such as rapid answer time and optics, the shortcoming of driving voltage higher (can reach 55 volts) is arranged.With regard to the angle of volume production, the high driving voltage of blue phase liquid crystal is one of problem of needing badly solution.
Summary of the invention
The technical matters that the present invention requires to solve is to provide a kind of blue phase liquid crystal display panel, and it comprises that layer of auxiliary material is to reduce driving voltage.
The present invention provides a kind of blue phase liquid crystal display panel, and it comprises first substrate, second substrate, blue phase liquid crystal layer and layer of auxiliary material.First substrate has a plurality of pixel drive unit.Each pixel drive unit comprises pixel electrode and counter electrode, so that electric field to be provided.Second substrate and first substrate dispose relatively.Blue phase liquid crystal layer is sealed between first substrate and second substrate.Blue phase liquid crystal layer has a plurality of blue phase liquid crystal molecules, and the blue phase liquid crystal molecule is by electric field driven.Layer of auxiliary material is configured on second substrate, and between second substrate and blue phase liquid crystal layer, and layer of auxiliary material is not configured between first substrate and the blue phase liquid crystal layer.
In one embodiment of this invention; The material of aforesaid layer of auxiliary material comprises polyamic acid (polyamic acid; PAA), pi (polyimide, PI), polysilane (polysilane), polysiloxane (polysiloxane), alkanethiol (alkanethiol) or amino alkanethiol (aminoalkanethiol).
In one embodiment of this invention, aforesaid pixel electrode has a plurality of first strip patterns.Counter electrode and pixel electrode are electrically insulated each other, and pixel electrode and counter electrode are positioned on the same plane.Counter electrode has a plurality of second strip patterns, and first strip pattern and second strip pattern are for alternately arranging.
In one embodiment of this invention, aforesaid blue phase liquid crystal display panel can further comprise auxiliary electrode.Auxiliary electrode is positioned at pixel electrode and counter electrode below, and auxiliary electrode and pixel electrode and counter electrode are electrically insulated each other.
In one embodiment of this invention, aforesaid pixel electrode has a plurality of first strip patterns.Counter electrode and pixel electrode are electrically insulated each other, and pixel electrode and counter electrode are positioned on the Different Plane.Counter electrode has a plurality of second strip patterns, and first strip pattern and second strip pattern system alternately arrange.
In one embodiment of this invention, aforesaid pixel electrode has a plurality of first strip patterns.Described first strip pattern is positioned on the same plane.Counter electrode is positioned at pixel electrode below, and pixel electrode and counter electrode are electrically insulated each other.
In one embodiment of this invention, aforesaid first substrate comprises thin-film transistor array base-plate, and second substrate comprises colored optical filtering substrates.
In one embodiment of this invention, aforesaid first substrate comprises colorized optical filtering integration thin-film transistor array base-plate, and second substrate comprises the subtend substrate.
In one embodiment of this invention, aforesaid pixel electrode and material comprise metal, conducting polymer, transparent conductive material with and combination.
In one embodiment of this invention, the material of aforesaid counter electrode comprise metal, conducting polymer, transparent conductive material with and combination.
Blue phase liquid crystal display panel of the present invention is by layer of auxiliary material is set on single substrate; Particularly layer of auxiliary material is arranged on colored optical filtering substrates or the subtend substrate, can fall significantly ground blue phase liquid crystal display panel driving voltage and improve the penetrance of blue phase liquid crystal display panel.
Describe the present invention below in conjunction with accompanying drawing and specific embodiment, but not as to qualification of the present invention.
Description of drawings
Fig. 1 is the diagrammatic cross-section of the blue phase liquid crystal display panel of first embodiment of the invention.
Fig. 2 is the top view of first substrate of the blue phase liquid crystal display panel of first embodiment of the invention.
Fig. 3 illustrate one embodiment of the invention the blue phase liquid crystal display panel driving voltage and penetrance between driving voltage and the relation between the penetrance of blue phase liquid crystal display panel of relation and two comparative examples.
Fig. 4 is the diagrammatic cross-section of the blue phase liquid crystal display panel of second embodiment of the invention.
Fig. 5 is the top view of first substrate of the blue phase liquid crystal display panel of second embodiment of the invention.
Fig. 6 is the diagrammatic cross-section of the blue phase liquid crystal display panel of third embodiment of the invention.
Fig. 7 is the top view of first substrate of the blue phase liquid crystal display panel of third embodiment of the invention.
Fig. 8 is the diagrammatic cross-section of the blue phase liquid crystal display panel of fourth embodiment of the invention.
Fig. 9 is the top view of first substrate of the blue phase liquid crystal display panel of fourth embodiment of the invention.
Wherein, Reference numeral:
100,100A, 100B, 100C: blue phase liquid crystal display panel
110,110A, 110B, 110C: first substrate
112: pixel drive unit
112a: pixel electrode
112b: counter electrode
112a ', 112b ': strip pattern
114: insulation course
116: auxiliary electrode
120: the second substrates
130: blue phase liquid crystal layer
132: the blue phase liquid crystal molecule
140: layer of auxiliary material
E: electric field
S100, S110, S120: curve
Embodiment
[first embodiment]
Fig. 1 is the diagrammatic cross-section of the blue phase liquid crystal display panel of first embodiment of the invention.Fig. 2 is the top view of first substrate of the blue phase liquid crystal display panel of Fig. 1.Particularly, Fig. 1 is the sectional view of the profile line A-A ' of corresponding diagram 2.Please with reference to Fig. 1 and Fig. 2, the blue phase of present embodiment (Blue Phase) display panels 100 comprise first substrate 110, and first substrate 110 relatively configuration second substrate 120, be sealed in blue phase liquid crystal layer 130 and layer of auxiliary material 140 between first substrate 110 and second substrate 120.In the present embodiment, first substrate 110 for example is thin film transistor (TFT) (Thin film transistor, a TFT) array base palte, and second substrate 120 for example is colorized optical filtering (Color filter, CF) substrate.But the invention is not restricted to this; In other embodiments; First substrate 110 also can be colorized optical filtering and is integrated on the thin film transistor (TFT) array (Color filter on Array, COA) substrate, or thin film transistor (TFT) array is integrated in (Array on Color filter on the chromatic filter layer; AOC) substrate, and second substrate 120 also can be the subtend substrate.Yet the present invention is not exceeded with above-mentioned.
In more detail, first substrate 110 of present embodiment has a plurality of pixel drive unit 112.Each pixel drive unit 112 comprises pixel electrode 112a and counter electrode 112b.Pixel electrode 112a and counter electrode 112b can be arranged on first substrate 110 electric field E is provided jointly.Electric field E can drive a plurality of blue phase liquid crystal molecule 1s 32 in the blue phase liquid crystal layer 130.The electric field E of present embodiment for example is a transverse electric field.Anticipate promptly, the direction of the electric field E of present embodiment mainly is distributed on the direction that is parallel to first substrate 110 and second substrate 120.In the present embodiment, blue phase liquid crystal 132 can use the liquid crystal material of high birefringence rate (birefringence) and high-dielectric coefficient (dielectric constant), so as to reducing the driving voltage of blue phase liquid crystal display panel.For example, the product of the dielectric coefficient of the birefraction of blue phase liquid crystal molecule 1 32 and blue phase liquid crystal molecule 1 32 can be more than or equal to 0.5.
In the present embodiment, as shown in Figure 2, pixel electrode 112a can have a plurality of first strip pattern 112a '.Counter electrode 112b and pixel electrode 112a are electrically insulated each other, and pixel electrode 112a and counter electrode 112b can be positioned on the same plane.Counter electrode 112b can have a plurality of second strip pattern 112b ', and the first strip pattern 112a ' alternately arranges with the second strip pattern 112b '.In other words, the blue phase liquid crystal display panel 100 of present embodiment with copline switch (In-Plane Switching, IPS) the formula display panel is that example describes, those skilled in the art also can do the design alteration of equivalence.In the present embodiment, the material of the material of pixel electrode 112a and counter electrode 112b comprise metal (for example aluminium, titanium, molybdenum), conducting polymer, transparent conductive material (for example indium tin oxide, indium-zinc oxide, aluminium tin-oxide, aluminium zinc oxide, indium germanium zinc oxide) with and combination.
What deserves to be mentioned is that the blue phase liquid crystal display panel 100 of present embodiment comprises layer of auxiliary material 140.Layer of auxiliary material 140 is configured on second substrate 120, and between second substrate 120 and blue phase liquid crystal layer 130, and layer of auxiliary material 140 is not configured between first substrate 110 and the blue phase liquid crystal layer 130.The layer of auxiliary material 140 of present embodiment optionally has orientation (Alignment) direction, does not perhaps have alignment direction.If desire is designed to have alignment direction with layer of auxiliary material 140, then the demand of the visual reality of alignment direction of layer of auxiliary material 140 adjusts.In the present embodiment; The material of layer of auxiliary material 140 comprises polyamic acid (polyamic acid; PAA), pi (polyimide; PI), polysilane (polysilane), polysiloxane (polysiloxane), alkanethiol (alkanethiol), amino alkanethiol (aminoalkanethiol), other have nitrogen, carbon, oxygen macromolecular material or self-assembled monolayer material (Self Assembling Monolayer, SAM).
What need special instruction is; The layer of auxiliary material 140 of present embodiment can reduce the driving voltage of blue phase liquid crystal display panel 100; The driving voltage that makes blue phase liquid crystal display panel 100 moves (promptly being moved to the left) to penetrance curve (Voltage-Transmittance Curve, V-T Curve) toward the direction of low-voltage.In other words, to identical penetrance layer of auxiliary material 140 driving voltage of blue phase liquid crystal display panel 100 is reduced.Below will cooperate Fig. 3 that above-mentioned phenomenon at length is described.
Fig. 3 is driving voltage (Driving Voltage) and the relation between the penetrance (Transmittance) (with curve S 100 representatives) that the blue phase liquid crystal display panel 100 of present embodiment is shown, and the driving voltage and the relation between the penetrance (respectively with curve S 110, S120 representative) of the blue phase liquid crystal display panel of two comparative examples are shown.Please with reference to Fig. 3; The curve S 100 of Fig. 3 illustrates driving voltage and the relation between the penetrance of the blue phase liquid crystal display panel of present embodiment; Layer of auxiliary material 140 is configured on second substrate 120; And between second substrate 120 and blue phase liquid crystal layer 130, and layer of auxiliary material 140 is not configured between first substrate 110 and the blue phase liquid crystal layer 130.The curve S 110 of Fig. 3 illustrates driving voltage and the relation between the penetrance of the blue phase liquid crystal display panel of first comparative example, and blue phase liquid crystal display panel 100 differences of the blue phase liquid crystal display panel of first comparative example and present embodiment only are that first substrate 110 and second substrate 120 of the blue phase liquid crystal display panel of first comparative example all do not have layer of auxiliary material.The curve S 120 of Fig. 3 illustrates driving voltage and the relation between the penetrance of the blue phase liquid crystal display panel of second comparative example; The difference of the blue phase liquid crystal display panel of second comparative example and the blue phase liquid crystal display panel 100 of present embodiment is that first substrate 110 and second substrate 120 of the blue phase liquid crystal display panel of second comparative example all have layer of auxiliary material, and this two layer of auxiliary material lays respectively between first substrate and the blue phase liquid crystal layer and between second substrate and the blue phase liquid crystal layer.
And the curve comparison curves S100 S110, S120 curve shows that when the present embodiment is a blue phase liquid crystal display panel 100 includes a second substrate 120 disposed on the liquid crystal layer 130 and blue auxiliary material layer 140 between, but not including the configuration of the first the substrate 110 and a blue phase liquid crystal layer between the auxiliary layer 130, the embodiment is a blue phase liquid crystal display panel 100, the driving voltage of the transmittance curve of S100 in the first comparative example and the second comparative example of the drive voltage transmittance curve S110, S120 are biased to a voltage fro direction (i.e. left), that is to lower driving voltage is needed to achieve the same degree of penetration.In addition; The critical voltage of the blue phase liquid crystal display panel 100 of present embodiment when the blue phase liquid crystal display panel transfers bright attitude to by dark attitude (even driving voltage); For example be 5 volts, also compared to the critical voltage (10 volts) of the blue phase liquid crystal display panel of first comparative example and second comparative example (respectively corresponding curve S 110, S120) come low.And; The driving voltage that the blue phase liquid crystal display panel 100 of present embodiment makes its penetrance when being 50% (about 0.0875) of maximum penetration rate (about 0.175) is 23.7 volts, compared to the blue phase liquid crystal display panel (corresponding curve S 110) of first comparative example to make its penetrance be 50% (about 0.081) of maximum penetration rate (about 0.162) time driving voltage (28.5 volts) come low.In addition, the penetrance of the blue phase liquid crystal display panel 100 of present embodiment under 60 volts of driving voltages is 0.174, compared to the height of the penetrance 0.162 of blue phase liquid crystal display panel (corresponding curve S 110) under 60 volts of driving voltages of first comparative example.Anticipate promptly the penetrance that (second substrate 120) configuration layer of auxiliary material 140 helps to reduce the driving voltage of blue phase liquid crystal display panel further and increases the blue phase liquid crystal display panel on the single substrate of blue phase liquid crystal display panel 100.
[second embodiment]
Fig. 4 is the diagrammatic cross-section of the blue phase liquid crystal display panel of second embodiment of the invention.Fig. 5 is the top view of first substrate of the blue phase liquid crystal display panel of Fig. 4.Particularly, Fig. 4 is the sectional view of the profile line B-B ' of corresponding diagram 5.Please with reference to Fig. 4 and Fig. 5, the blue phase liquid crystal display panel 100A of present embodiment is similar with the blue phase liquid crystal display panel 100 of first embodiment.But the form of the form of the first substrate 110A of present embodiment and first substrate 110 of first embodiment is different.Below only just do explanation here, both just no longer repeat something in common.
The blue phase liquid crystal display panel 100A of present embodiment comprise the first substrate 110A with a plurality of pixel drive unit 112, with the first substrate 110A relatively configuration second substrate 120, be sealed in the blue phase liquid crystal layer 130 between the first substrate 110A and second substrate 120 and be configured on second substrate 120 and the layer of auxiliary material 140 between second substrate 120 and blue phase liquid crystal layer 130.The layer of auxiliary material 140 of present embodiment is not configured between the first substrate 110A and the blue phase liquid crystal layer 130.In the blue phase liquid crystal display panel 100A of present embodiment, layer of auxiliary material 140 also has the effect of the driving voltage reduction that makes blue phase liquid crystal display panel 100A.
As shown in Figure 4, the first substrate 110A of present embodiment has a plurality of pixel drive unit 112.Each pixel drive unit 112 comprises pixel electrode 112a and counter electrode 112b.Pixel electrode 112a and counter electrode 112b provide electric field E jointly.Electric field E can drive a plurality of blue phase liquid crystal molecule 1s 32 in the blue phase liquid crystal layer 130.As shown in Figure 5, in the present embodiment, pixel electrode 112a has a plurality of first strip patterns.Counter electrode 112b and pixel electrode 112a are electrically insulated each other.Counter electrode 112b has a plurality of second strip pattern 112b ', and the first strip pattern 112a ' alternately arranges with the second strip pattern 112b '.Different with first embodiment is that as shown in Figure 4, in the present embodiment, pixel electrode 112a and counter electrode 112b are positioned at Different Plane.In detail, the pixel electrode 112a of present embodiment is positioned on the counter electrode 112b, and disposes insulation course 114 between pixel electrode 112a and counter electrode 112b.But the invention is not restricted to this, in other embodiments, counter electrode 112b also can be positioned on the pixel electrode 112a.The blue phase liquid crystal display panel 100A of present embodiment and the blue phase liquid crystal display panel 100 of first embodiment have similar effect and advantage, just no longer repeat in this.
[the 3rd embodiment]
Fig. 6 is the diagrammatic cross-section of the blue phase liquid crystal display panel of third embodiment of the invention.Fig. 7 is the top view of first substrate of the blue phase liquid crystal display panel of Fig. 6.Particularly, Fig. 6 is the sectional view of the profile line C-C ' of corresponding diagram 7.Please with reference to Fig. 6 and Fig. 7, the blue phase liquid crystal display panel 100B of present embodiment is similar with the blue phase liquid crystal display panel 100 of first embodiment.But the form of the form of the first substrate 110B of present embodiment and first substrate 110 of first embodiment is different.Below only just do explanation here, both just no longer repeat something in common.
The blue phase liquid crystal display panel 100B of present embodiment comprise the first substrate 110B with a plurality of pixel drive unit 112, with the first substrate 110B relatively configuration second substrate 120, be sealed in the blue phase liquid crystal layer 130 between the first substrate 110B and second substrate 120 and be configured on second substrate 120 and the layer of auxiliary material 140 between second substrate 120 and blue phase liquid crystal layer 130.The layer of auxiliary material 140 of present embodiment is not configured between the first substrate 110B and the blue phase liquid crystal layer 130.In the blue phase liquid crystal display panel 100B of present embodiment, layer of auxiliary material 140 also has the effect of the driving voltage reduction that makes blue phase liquid crystal display panel 100B.
As shown in Figure 6, the first substrate 110B of present embodiment has a plurality of pixel drive unit 112.Each pixel drive unit 112 comprises pixel electrode 112a and counter electrode 112b.Pixel electrode 112a and counter electrode 112b provide electric field E jointly.Electric field E can drive a plurality of blue phase liquid crystal molecule 1s 32 in the blue phase liquid crystal layer 130.In the present embodiment, as shown in Figure 7, pixel electrode 112a has a plurality of first strip pattern 112a '.As shown in Figure 6, these first strip patterns 112a ' is positioned on the same plane.Counter electrode 112b is positioned at pixel electrode 112a below, and pixel electrode 112a and counter electrode 112b are electrically insulated each other.In other words, the blue phase liquid crystal display panel 100B of present embodiment is that fringe field switches (Fringe Field Switching, FFS) formula display panel.In the present embodiment, configurable between pixel electrode 112a and counter electrode 112b have insulation course 114, so that pixel electrode 112a and counter electrode 112b are electrically insulated each other.The blue phase liquid crystal display panel 100B of present embodiment and the blue phase liquid crystal display panel 100 of first embodiment have similar effect and advantage, just no longer repeat in this.
[the 4th embodiment]
Fig. 8 is the diagrammatic cross-section of the blue phase liquid crystal display panel of third embodiment of the invention.Fig. 9 is the top view of first substrate of the blue phase liquid crystal display panel of Fig. 8.Particularly, Fig. 8 is the sectional view of the profile line D-D ' of corresponding diagram 9.Please with reference to Fig. 8 and Fig. 9, the blue phase liquid crystal display panel 100C of present embodiment is similar with the blue phase liquid crystal display panel 100 of first embodiment.But the form of the first substrate 110C of present embodiment and the form of first substrate 110 of first embodiment have a little different.Below only just do explanation here, both just no longer repeat something in common.
The blue phase liquid crystal display panel 100C of present embodiment comprise the first substrate 110C with a plurality of pixel drive unit 112, with the first substrate 110C relatively configuration second substrate 120, be sealed in the blue phase liquid crystal layer 130 between the first substrate 110C and second substrate 120 and be configured on second substrate 120 and the layer of auxiliary material 140 between second substrate 120 and blue phase liquid crystal layer 130.The layer of auxiliary material 140 of present embodiment is not configured between the first substrate 110C and the blue phase liquid crystal layer 130.In the blue phase liquid crystal display panel 100C of present embodiment, layer of auxiliary material 140 also has the effect of the driving voltage reduction that makes blue phase liquid crystal display panel 100C.
As shown in Figure 8, the first substrate 110C of present embodiment has a plurality of pixel drive unit 112.Each pixel drive unit 112 comprises pixel electrode 112a and counter electrode 112b.Pixel electrode 112a and counter electrode 112b provide electric field E jointly.Electric field E can drive a plurality of blue phase liquid crystal molecule 1s 32 in the blue phase liquid crystal layer 130.In the present embodiment, as shown in Figure 9, pixel electrode 112a has a plurality of first strip pattern 112a '.As shown in Figure 8, counter electrode 112b and pixel electrode 112a are electrically insulated each other, and pixel electrode 112a and counter electrode 112b are positioned on the same plane.As shown in Figure 9, counter electrode 112b has a plurality of second strip pattern 112b ', and the first strip pattern 112a ' is alternately arrangement with the second strip pattern 112b '.
Different with first embodiment is that the blue phase liquid crystal display panel 100C of present embodiment can further comprise auxiliary electrode 116.Auxiliary electrode 116 is positioned at pixel electrode 112a and counter electrode 112b below, and auxiliary electrode 116 is electrically insulated with pixel electrode 112a and counter electrode 112b each other.The auxiliary electrode 116 of present embodiment can be (floating) electrode of floating, and promptly the voltage quasi position of auxiliary electrode 116 can be 0 volt.In other words, the blue phase liquid crystal display panel 100 of present embodiment switches (Fringe In-plane Switching, FIS) formula display panel for the edge copline.In the present embodiment, 116 of pixel electrode 112a, counter electrode 112b and auxiliary electrodes are configurable to have insulation course 114 (being plotted in Fig. 8), so that pixel electrode 112a, counter electrode 112b and auxiliary electrode 116 are electrically insulated.The blue phase liquid crystal display panel 100C of present embodiment and the blue phase liquid crystal display panel 100 of first embodiment have similar effect and advantage, just no longer repeat in this.
In sum; Blue phase liquid crystal display panel of the present invention is by layer of auxiliary material is set on single substrate; Particularly layer of auxiliary material is arranged on colored optical filtering substrates or the subtend substrate, can fall significantly ground blue phase liquid crystal display panel driving voltage and improve the penetrance of blue phase liquid crystal display panel.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of claim of the present invention.
Claims (10)
1. a blue phase liquid crystal display panel is characterized in that, comprising:
One first substrate has a plurality of pixel drive unit, and each pixel drive unit comprises a pixel electrode and a subtend electrode, so that an electric field to be provided;
One second substrate disposes with this first substrate relatively;
One blue phase liquid crystal layer is sealed between this first substrate and this second substrate, and this blue phase liquid crystal layer has a plurality of blue phase liquid crystal molecules, and with this electric field driven; And
One layer of auxiliary material is configured on this second substrate, between second substrate and this blue phase liquid crystal layer, and is not configured between this first substrate and this blue phase liquid crystal layer.
2. blue phase liquid crystal display panel according to claim 1 is characterized in that, the material of this layer of auxiliary material comprises polyamic acid, pi, polysilane, polysiloxane, alkanethiol or amino alkanethiol.
3. blue phase liquid crystal display panel according to claim 1 is characterized in that,
This pixel electrode has a plurality of first strip patterns; And
This counter electrode is electrically insulated with this pixel electrode each other, and this pixel electrode and this counter electrode be positioned on the same plane, and this counter electrode has a plurality of second strip patterns, and those first strip patterns and those second strip patterns are alternately arranged.
4. blue phase liquid crystal display panel according to claim 3 is characterized in that, more comprises:
One auxiliary electrode is positioned at this pixel electrode and this counter electrode below, and this auxiliary electrode and this pixel electrode and this counter electrode are electrically insulated each other.
5. blue phase liquid crystal display panel according to claim 1 is characterized in that,
This pixel electrode has a plurality of first strip patterns; And
This counter electrode is electrically insulated with this pixel electrode each other, and this pixel electrode and this counter electrode be positioned on the Different Plane, and this counter electrode has a plurality of second strip patterns, and those first strip patterns and those second strip patterns are alternately arranged.
6. blue phase liquid crystal display panel according to claim 1 is characterized in that,
This pixel electrode has a plurality of first strip patterns, is positioned on the same plane; And
This counter electrode is positioned at this pixel electrode below, and this pixel electrode and this counter electrode are electrically insulated each other.
7. blue phase liquid crystal display panel according to claim 1 is characterized in that, this first substrate comprises a thin-film transistor array base-plate, and this second substrate comprises a colored optical filtering substrates.
8. blue phase liquid crystal display panel according to claim 1 is characterized in that, this first substrate comprises colorized optical filtering integration thin-film transistor array base-plate, and this second substrate comprises a subtend substrate.
9. blue phase liquid crystal display panel according to claim 1 is characterized in that, this pixel electrode and material comprise metal, conducting polymer, transparent conductive material with and combination.
10. blue phase liquid crystal display panel according to claim 1 is characterized in that, the material of this counter electrode comprise metal, conducting polymer, transparent conductive material with and combination.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100115174A TWI461804B (en) | 2011-04-29 | 2011-04-29 | Blue phase liquid crystal display panel |
| TW100115174 | 2011-04-29 |
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| CN102368126A true CN102368126A (en) | 2012-03-07 |
| CN102368126B CN102368126B (en) | 2013-12-25 |
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| CN 201110330067 Expired - Fee Related CN102368126B (en) | 2011-04-29 | 2011-10-24 | Blue phase liquid crystal display panel |
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| WO2015103870A1 (en) * | 2014-01-13 | 2015-07-16 | 京东方科技集团股份有限公司 | Display substrate and display device |
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Also Published As
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| TW201243460A (en) | 2012-11-01 |
| CN102368126B (en) | 2013-12-25 |
| TWI461804B (en) | 2014-11-21 |
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