CN102368126B - Blue phase liquid crystal display panel - Google Patents
Blue phase liquid crystal display panel Download PDFInfo
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- CN102368126B CN102368126B CN 201110330067 CN201110330067A CN102368126B CN 102368126 B CN102368126 B CN 102368126B CN 201110330067 CN201110330067 CN 201110330067 CN 201110330067 A CN201110330067 A CN 201110330067A CN 102368126 B CN102368126 B CN 102368126B
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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 is placed in polarizing microscope by cholesterol type benzoate (Cholesteric benzoate), observe the cholesterol type benzoate and can present different colours (bluish violet and blueness) in even phase (Isotropic) and cholesterol phase (Cholesteric), even and the cholesterol change color phenomenon between mutually exists only in very little temperature range (approximately only having 1 ℃ of temperature range).In 1970 Christian eras, many scientists utilize the 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 mentioned in the literature is " fog phase ".Compared to the cube structure (cubic) of BP I and BP II, BP III is unformed (amorphous).At the polarized light microscopy Microscopic observation, BP III normally, without the fuzzy image of any structure, therefore is difficult to the polarized light microscopy Microscopic observation.
And the structure of BP I, BP II has been proved, the elementary cell that forms BP I, BP II is " two torsions are cylindric " (DTC:double twist cylinder), and such arrangement mode has minimum free energy.In addition, the arrangement of two torsion cylindrical tube in space is orthogonal, and such arrangement causes the lattice of defect (defect), and is considered to be entered by liquid crystal phase the pre-converted phenomenon (pre-transitional phenomena) of cholesterol phase.Therefore, indigo plant is classified as invalid phase (frustrated phases) mutually.Utilize the experimental research such as Bragg diffraction, Kossel diffraction chart, optical texture, crystal growth to find, 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, as nematic phase (nematic), smectic phase (smectic), even phase (isotropic), usually BP I, BP II can show the color graphics (J.A.C.S of many tabular (platelet texture) under polarizing microscope, 2008,130,6326Kikuchiet.al.), this is because lattice period causes due to Bragg reflection at visible wavelength range.
General liquid crystal has optics out-phase (optically anisotropic), but blue phase liquid crystal is but to have the tropisms (optically isotropic) such as optics.In other words, blue phase liquid crystal has very low or does not even have a birefringence (Birefringence).
Due to the lattice period of the blue phase liquid crystal function that is visible wavelength, therefore can produce selectivity " Bragg reflection " (selective Bragg reflection).This specific character makes blue phase liquid crystal can be used in the light valve (fast light modulators) of rapid answer.But, no matter still observation experimentally of prediction in theory, blue phase liquid crystal only appear at possess high-purity is arranged, in molecular material that height revolves optical activity, and the change color of its blue phase exists only in very little temperature range.Therefore, blue phase liquid crystal is only academicly coming into question usually, but does not come into one's own in practical application.
Nearly 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 is subject to again the attention of science and industrial community.For the needs on applying, blue phase liquid crystal must possess broad temperature application range is arranged, and therefore different technical developments 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 broad temperature range to produce.In addition, in 2002, the people such as Kikuchi added a small amount of high polymer monomer and light initiator in 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 ℃.
Although blue phase liquid crystal has the 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 present invention requires the technical matters solved to be 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 invention provides a kind of blue-phase liquid crystal display panel, 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 is relative with first substrate to be configured.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 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 the first strip patterns.Counter electrode and pixel electrode are electrically insulated mutually, and pixel electrode and counter electrode in the same plane.Counter electrode has a plurality of the second strip patterns, and the first strip pattern and the second strip pattern are alternative arrangement.
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 mutually.
In one embodiment of this invention, aforesaid pixel electrode has a plurality of the first strip patterns.Counter electrode and pixel electrode are electrically insulated mutually, and pixel electrode and counter electrode are positioned on Different Plane.Counter electrode has a plurality of the second strip patterns, and the first strip pattern and the second strip pattern are alternative arrangement.
In one embodiment of this invention, aforesaid pixel electrode has a plurality of the first strip patterns.Described the first strip pattern is in the same plane.Counter electrode is positioned at pixel electrode below, and pixel electrode and counter electrode are electrically insulated mutually.
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 subtend substrate, can fall significantly the ground blue-phase liquid crystal display panel driving voltage and improve the penetrance of blue-phase liquid crystal display panel.
Below in conjunction with the drawings and specific embodiments, describe the present invention, but not as a limitation of the invention.
The accompanying drawing explanation
The diagrammatic cross-section of the blue-phase liquid crystal display panel that Fig. 1 is first embodiment of the invention.
The top view of the first substrate of the blue-phase liquid crystal display panel that Fig. 2 is first embodiment of the invention.
Fig. 3 illustrate the driving voltage of blue-phase liquid crystal display panel of one embodiment of the invention and penetrance between relation and the driving voltage of the blue-phase liquid crystal display panel of two comparative examples and the relation between penetrance.
The diagrammatic cross-section of the blue-phase liquid crystal display panel that Fig. 4 is second embodiment of the invention.
The top view of the first substrate of the blue-phase liquid crystal display panel that Fig. 5 is second embodiment of the invention.
The diagrammatic cross-section of the blue-phase liquid crystal display panel that Fig. 6 is third embodiment of the invention.
The top view of the first substrate of the blue-phase liquid crystal display panel that Fig. 7 is third embodiment of the invention.
The diagrammatic cross-section of the blue-phase liquid crystal display panel that Fig. 8 is fourth embodiment of the invention.
The top view of the first substrate of the blue-phase liquid crystal display panel that Fig. 9 is 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: second substrate
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
[the first embodiment]
The diagrammatic cross-section of the blue-phase liquid crystal display panel that Fig. 1 is 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 refer to Fig. 1 and Fig. 2, the blue phase of the present embodiment (Blue Phase) display panels 100 comprise first substrate 110, configuration relative to first substrate 110 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 is for example thin film transistor (TFT) (Thin film transistor, TFT) array base palte, and second substrate 120 is for example 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 in (Color filter on Array on thin film transistor (TFT) array, COA) substrate, or thin film transistor (TFT) array is integrated in (Array on Color filter on chromatic filter layer, AOC) substrate, and second substrate 120 also can be the subtend substrate.Yet the present invention is not limited with above-mentioned.
In more detail, the first substrate 110 of the 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 provides electric field E jointly.Electric field E can drive a plurality of blue phase liquid crystal molecule 1s 32 in blue phase liquid crystal layer 130.The electric field E of the present embodiment is for example transverse electric field., the direction of the electric field E of the present embodiment mainly is distributed on the direction that is parallel to first substrate 110 and second substrate 120 meaning.In the present embodiment, blue phase liquid crystal 132 can be used 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 the first strip pattern 112a '.Counter electrode 112b and pixel electrode 112a are electrically insulated mutually, and pixel electrode 112a and counter electrode 112b can be in the same plane.Counter electrode 112b can have a plurality of the second strip pattern 112b ', and the first strip pattern 112a ' and the second strip pattern 112b ' alternative arrangement.In other words, the blue-phase liquid crystal display panel 100 of the present embodiment be take copline switching (In-Plane Switching, IPS) formula display panel and is described as example, and those skilled in the art also can do equivalent design alteration.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.
It is worth mentioning that, the blue-phase liquid crystal display panel 100 of the 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 blue phase liquid crystal layer 130.The layer of auxiliary material 140 of the present embodiment optionally has orientation (Alignment) direction, or does not have alignment direction.If wish is designed to have alignment direction by layer of auxiliary material 140, 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 has macromolecular material or the self-assembled monolayer material (Self Assembling Monolayer, SAM) of nitrogen, carbon, oxygen.
What need special instruction is, the layer of auxiliary material 140 of the 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 (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, can make the driving voltage of blue-phase liquid crystal display panel 100 reduce.Below will coordinate Fig. 3 to explain above-mentioned phenomenon.
Fig. 3 is driving voltage (Driving Voltage) and the relation between penetrance (Transmittance) (with curve S 100 representatives) that the blue-phase liquid crystal display panel 100 of the present embodiment is shown, and driving voltage and the relation between penetrance (respectively with curve S 110, S120 representative) of the blue-phase liquid crystal display panel of two comparative examples are shown.Please refer to Fig. 3, the curve S 100 of Fig. 3 illustrates the driving voltage of blue-phase liquid crystal display panel of the present embodiment and the relation between penetrance, 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 blue phase liquid crystal layer 130.The curve S 110 of Fig. 3 illustrates the driving voltage of blue-phase liquid crystal display panel of the first comparative example and the relation between penetrance, and the blue-phase liquid crystal display panel of the first comparative example and the blue-phase liquid crystal display panel of the present embodiment 100 differences only are that the first substrate 110 of the blue-phase liquid crystal display panel of the first comparative example does not all have layer of auxiliary material with second substrate 120.The curve S 120 of Fig. 3 illustrates the driving voltage of blue-phase liquid crystal display panel of the second comparative example and the relation between penetrance, the difference of the blue-phase liquid crystal display panel of the second comparative example and the blue-phase liquid crystal display panel of the present embodiment 100 is that the first substrate 110 of the blue-phase liquid crystal display panel of the second comparative example all has layer of auxiliary material with second substrate 120, and this two layer of auxiliary material lays respectively between first substrate and blue phase liquid crystal layer and between second substrate and blue phase liquid crystal layer.
Comparison curves S100 and curve S 110, curve S 120 is known, when the blue-phase liquid crystal display panel 100 of the present embodiment comprises the layer of auxiliary material 140 be disposed between second substrate 120 and blue phase liquid crystal layer 130, and while not comprising the layer of auxiliary material be disposed between first substrate 110 and blue phase liquid crystal layer 130, the driving voltage of the blue-phase liquid crystal display panel 100 of the present embodiment to the curve S 100 of penetrance than the driving voltage of the first comparative example and the second comparative example to penetrance curve S 110, the deflection Go-to-and-fro voltage direction (taking back) that S120 comes, also with lower driving voltage, can reach identical penetration.In addition, the critical voltage of the blue-phase liquid crystal display panel 100 of the present embodiment (even driving voltage when blue-phase liquid crystal display panel transfers bright state to by dark state), be for example 5 volts, that also compared to the critical voltage (10 volts) of the blue-phase liquid crystal display panel of the first comparative example and the second comparative example (corresponding curve S 110, S120 respectively), comes is low.And, the driving voltage when blue-phase liquid crystal display panel 100 of the present embodiment makes 50% (approximately 0.0875) that its penetrance is maximum penetration rate (approximately 0.175) is 23.7 volts, compared to the blue-phase liquid crystal display panel (corresponding curve S 110) of the first comparative example make 50% (approximately 0.081) that its penetrance is maximum penetration rate (approximately 0.162) time driving voltage (28.5 volts) come low.In addition, the penetrance of the blue-phase liquid crystal display panel 100 of the 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 the first comparative example., on the single substrate of blue-phase liquid crystal display panel 100, (second substrate 120) configures the penetrance that layer of auxiliary material 140 contributes to reduce further the driving voltage of blue-phase liquid crystal display panel and increases blue-phase liquid crystal display panel to meaning.
[the second embodiment]
The diagrammatic cross-section of the blue-phase liquid crystal display panel that Fig. 4 is 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 refer to Fig. 4 and Fig. 5, the blue-phase liquid crystal display panel 100A of the present embodiment is similar to the blue-phase liquid crystal display panel 100 of the first embodiment.But the form of the form of the first substrate 110A of the present embodiment and the first substrate 110 of the first embodiment is different.Below only just explain, both just no longer repeat something in common herein.
The blue-phase liquid crystal display panel 100A of the present embodiment comprise the first substrate 110A with a plurality of pixel drive unit 112, configuration relative to first substrate 110A second substrate 120, be sealed in the blue phase liquid crystal layer 130 between 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 the present embodiment is not configured between first substrate 110A and blue phase liquid crystal layer 130.In the blue-phase liquid crystal display panel 100A of the 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 the 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 blue phase liquid crystal layer 130.As shown in Figure 5, in the present embodiment, pixel electrode 112a has a plurality of the first strip patterns.Counter electrode 112b and pixel electrode 112a are electrically insulated mutually.Counter electrode 112b has a plurality of the second strip pattern 112b ', and the first strip pattern 112a ' and the second strip pattern 112b ' alternative arrangement.Different from the first embodiment, 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 the present embodiment is positioned on 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 pixel electrode 112a.The blue-phase liquid crystal display panel 100A of the present embodiment and the blue-phase liquid crystal display panel 100 of the first embodiment have similar effect and advantage, in this, just no longer repeat.
[the 3rd embodiment]
The diagrammatic cross-section of the blue-phase liquid crystal display panel that Fig. 6 is 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 refer to Fig. 6 and Fig. 7, the blue-phase liquid crystal display panel 100B of the present embodiment is similar to the blue-phase liquid crystal display panel 100 of the first embodiment.But the form of the form of the first substrate 110B of the present embodiment and the first substrate 110 of the first embodiment is different.Below only just explain, both just no longer repeat something in common herein.
The blue-phase liquid crystal display panel 100B of the present embodiment comprise the first substrate 110B with a plurality of pixel drive unit 112, configuration relative to first substrate 110B second substrate 120, be sealed in the blue phase liquid crystal layer 130 between 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 the present embodiment is not configured between first substrate 110B and blue phase liquid crystal layer 130.In the blue-phase liquid crystal display panel 100B of the 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 the 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 blue phase liquid crystal layer 130.In the present embodiment, as shown in Figure 7, pixel electrode 112a has a plurality of the first strip pattern 112a '.As shown in Figure 6, these first strip patterns 112a ' is in the same plane.Counter electrode 112b is positioned at pixel electrode 112a below, and pixel electrode 112a and counter electrode 112b are electrically insulated mutually.In other words, the blue-phase liquid crystal display panel 100B of the present embodiment is fringe field switching (Fringe Field Switching, FFS) formula display panel.In the present embodiment, between pixel electrode 112a and counter electrode 112b, may be configured with 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 the present embodiment and the blue-phase liquid crystal display panel 100 of the first embodiment have similar effect and advantage, in this, just no longer repeat.
[the 4th embodiment]
The diagrammatic cross-section of the blue-phase liquid crystal display panel that Fig. 8 is 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 refer to Fig. 8 and Fig. 9, the blue-phase liquid crystal display panel 100C of the present embodiment is similar to the blue-phase liquid crystal display panel 100 of the first embodiment.But the form of the first substrate 110C of the present embodiment and the form of the first substrate 110 of the first embodiment have a little different.Below only just explain, both just no longer repeat something in common herein.
The blue-phase liquid crystal display panel 100C of the present embodiment comprise the first substrate 110C with a plurality of pixel drive unit 112, configuration relative to first substrate 110C second substrate 120, be sealed in the blue phase liquid crystal layer 130 between 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 the present embodiment is not configured between first substrate 110C and blue phase liquid crystal layer 130.In the blue-phase liquid crystal display panel 100C of the 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 the 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 blue phase liquid crystal layer 130.In the present embodiment, as shown in Figure 9, pixel electrode 112a has a plurality of the first strip pattern 112a '.As shown in Figure 8, counter electrode 112b and pixel electrode 112a are electrically insulated mutually, and pixel electrode 112a and counter electrode 112b in the same plane.As shown in Figure 9, counter electrode 112b has a plurality of the second strip pattern 112b ', and the first strip pattern 112a ' is alternative arrangement with the second strip pattern 112b '.
Different from the first embodiment, the blue-phase liquid crystal display panel 100C of the 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 mutually with pixel electrode 112a and counter electrode 112b.The auxiliary electrode 116 of the present embodiment can be (floating) electrode of floating, and the voltage quasi position of auxiliary electrode 116 can be 0 volt.In other words, the blue-phase liquid crystal display panel 100 of the present embodiment is edge copline switching (Fringe In-plane Switching, FIS) formula display panel.In the present embodiment, 116 of pixel electrode 112a, counter electrode 112b and auxiliary electrodes may be configured with 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 the present embodiment and the blue-phase liquid crystal display panel 100 of the first embodiment have similar effect and advantage, in this, just no longer repeat.
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 subtend substrate, can fall significantly the 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; in the situation that do not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of the claims in the present invention.
Claims (10)
1. a blue-phase liquid crystal display panel, is characterized in that, comprising:
One first substrate, have 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, configure relative with this first substrate;
One blue phase liquid crystal layer, be 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, be 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 the first strip patterns; And
This counter electrode, be electrically insulated mutually with this pixel electrode, and this pixel electrode and this counter electrode in the same plane, this counter electrode has a plurality of the second strip patterns, those first strip patterns and those the second strip pattern alternative arrangements.
4. blue-phase liquid crystal display panel according to claim 3, is characterized in that, more comprises:
One auxiliary electrode, be 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 mutually.
5. blue-phase liquid crystal display panel according to claim 1, is characterized in that,
This pixel electrode has a plurality of the first strip patterns; And
This counter electrode, be electrically insulated mutually with this pixel electrode, and this pixel electrode and this counter electrode be positioned on Different Plane, and this counter electrode has a plurality of the second strip patterns, those first strip patterns and those the second strip pattern alternative arrangements.
6. blue-phase liquid crystal display panel according to claim 1, is characterized in that,
This pixel electrode has a plurality of the first strip patterns, in the same plane; And
This counter electrode, be positioned at this pixel electrode below, and this pixel electrode and this counter electrode are electrically insulated mutually.
7. blue-phase liquid crystal display panel according to claim 1, is characterized in that, this first substrate is a thin-film transistor array base-plate, and this second substrate is a colored optical filtering substrates.
8. blue-phase liquid crystal display panel according to claim 1, is characterized in that, this first substrate is that a colorized optical filtering is integrated thin-film transistor array base-plate, and this second substrate is a subtend substrate.
9. blue-phase liquid crystal display panel according to claim 1, is characterized in that, the material of this pixel electrode 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.
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| Application Number | Priority Date | Filing Date | Title |
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| TW100115174 | 2011-04-29 | ||
| TW100115174A TWI461804B (en) | 2011-04-29 | 2011-04-29 | Blue phase liquid crystal display panel |
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| CN102368126A CN102368126A (en) | 2012-03-07 |
| CN102368126B true CN102368126B (en) | 2013-12-25 |
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| CN105589242B (en) * | 2012-04-12 | 2019-07-05 | 群康科技(深圳)有限公司 | Dot structure substrate and the liquid crystal display panel for applying it |
| CN102707482A (en) * | 2012-05-31 | 2012-10-03 | 京东方科技集团股份有限公司 | Negative polymer dispersed liquid crystal film, liquid crystal panel and liquid crystal display |
| TWI465818B (en) * | 2012-06-21 | 2014-12-21 | Au Optronics Corp | Blue phase liquid crystal display panel |
| TWI489184B (en) * | 2012-07-26 | 2015-06-21 | Au Optronics Corp | Liquid crystal display panel |
| TWI518422B (en) | 2013-08-20 | 2016-01-21 | 友達光電股份有限公司 | Display panel |
| CN103744234A (en) * | 2013-11-28 | 2014-04-23 | 深圳市华星光电技术有限公司 | Blue-phase liquid crystal display panel |
| CN103728796A (en) * | 2014-01-13 | 2014-04-16 | 京东方科技集团股份有限公司 | Display substrate and display device |
| CN104181736B (en) | 2014-08-01 | 2017-08-01 | 京东方科技集团股份有限公司 | Display base plate and its manufacture method, display device |
| TWI563332B (en) * | 2016-03-02 | 2016-12-21 | Au Optronics Corp | Liquid crystal display panel |
| TWI600168B (en) | 2016-11-02 | 2017-09-21 | 律勝科技股份有限公司 | Laminate structure of thin film transistor |
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| TWI282004B (en) * | 2005-07-01 | 2007-06-01 | Chunghwa Picture Tubes Ltd | Liquid crystal display panel and liquid crystal display device |
| TW200809353A (en) * | 2006-07-07 | 2008-02-16 | Hitachi Displays Ltd | Optically isotropic liquid crystal materials and display apparatus using the same |
| TWI372922B (en) * | 2008-06-30 | 2012-09-21 | Chimei Innolux Corp | Manufacturing method of alignment film and manufacturing method of liquid crystal display panel |
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| CN101750820A (en) * | 2008-11-28 | 2010-06-23 | 株式会社半导体能源研究所 | A liquid crystal display device |
| CN101900913A (en) * | 2009-05-29 | 2010-12-01 | 株式会社半导体能源研究所 | Liquid crystal disply device and its preparation method |
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| TWI461804B (en) | 2014-11-21 |
| CN102368126A (en) | 2012-03-07 |
| TW201243460A (en) | 2012-11-01 |
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