CN103376590B - Display device - Google Patents
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- CN103376590B CN103376590B CN201210122105.5A CN201210122105A CN103376590B CN 103376590 B CN103376590 B CN 103376590B CN 201210122105 A CN201210122105 A CN 201210122105A CN 103376590 B CN103376590 B CN 103376590B
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Abstract
The present invention provides a kind of display device, including first substrate, second substrate, blue phase liquid crystal layer and optical element.First substrate has a viewing area.First and second substrate sets relatively.Blue phase liquid crystal layer is located between first and second substrate and optionally reflects a light, and the spectrum peak of light is positioned at a transposition section, and transposition section is optical wavelength interval between 480nm to 520nm.Optical element at least has the function of the phase place adjusting light and light-absorbing function one of both.
Description
Technical field
The invention relates to a kind of display device, and in particular to a kind of optionally reflection, there is the display device of the light of specific frequency spectrum peak value.
Background technology
In recent years, liquid crystal display has been widely used for the display screen of electronic product.Liquid crystal display has many different forms, including twisted nematic (twisternematic), super twisted nematic (supertwistednematic, STN), plane switching (in-planeswitching, IPS), multizone (multi-domainverticalalignment, MVA) arranged vertically etc..Can control the direction of rotation of liquid crystal molecule the polarization direction of modulation light upon application of a voltage, and then affect light and cause by measuring the contrast of on state of and dark-state as display result.
In order to control liquid crystal molecule direction, tradition uses the display of the form of nematic crystal (nematicliquidcrystal), often the surface orientation of substrate is processed the orientation to control liquid crystal molecule, such as carry out (rubbing) process that rubs, with the alignment film surface being coated with on the cloth material substrate surface that contacts with liquid crystal of friction, not only make process costs rising and be easily reduced display quality.And aforementioned use is to the display of row (nematic) liquid crystal, its response time is long, is unfavorable for the application that the dynamic image of color-sequential method show, it is necessary to arranges colored filter thin film and presents colored display effect.
Therefore, one of blue phase liquid crystal research emphasis becoming current industry with rapid reaction rate.Blue phase liquid crystal display device have response speed faster, contrast is high, the wider array of advantage in visual angle.But, the driving voltage required for blue phase liquid crystal is higher, becomes one of problem of overcoming required for development blue phase liquid crystal display device.
Summary of the invention
The invention relates to a kind of display device, and particularly a kind of light utilizing blue phase liquid crystal layer optionally to reflect a specific frequency spectrum peak value, to reduce driving voltage.
According to the first aspect of the invention, it is proposed to a kind of display device, including first substrate, second substrate, blue phase liquid crystal layer and optical element.First substrate has a viewing area.First and second substrate sets relatively.Blue phase liquid crystal layer is located between first and second substrate and optionally reflects a light, and the spectrum peak of light is positioned at a transposition section, and transposition section is optical wavelength interval between 480nm to 520nm.Optical element at least has the function of the phase place adjusting light and light-absorbing function one of both.
According to the second aspect of the invention, it is proposed to a kind of display device, including first substrate, second substrate, blue phase liquid crystal layer and optical element.First substrate has a viewing area.First and second substrate sets relatively.Blue phase liquid crystal layer is located between first and second substrate and optionally reflects a light, and the spectrum peak of light is positioned at a transposition section, and transposition section is optical wavelength interval between 560nm to 600nm.Optical element at least has the function of the phase place adjusting light and performs light-absorbing function one of both.
No matter the light source of backlight module is applied the need of cooperation colored filter, the display device of the present invention, it is defined in transposition section by the spectrum peak of the reflection light of reflection selected by blue phase liquid crystal layer, owing in transposition section, the light intensity of light and the penetrance of traverse colored filter are all relative low points, even if light is subject to the absorption of Polarizer or organic dyestuff, the light intensity of its loss is still relatively low, thus can maintain the luminous efficiency of display device.
Accompanying drawing explanation
Figure 1A is shown according to the generalized section of the display device of one embodiment of the invention.
Figure 1B is shown according to the top view of the display device of one embodiment of the invention.
Fig. 2 A, Fig. 2 B to Fig. 2 C is other form schematic diagrams of the electrode structure being shown according to one embodiment of the invention.
Fig. 3 A is the schematic diagram of the mechanism of the display device elimination Ambient being shown according to one embodiment of the invention.
Fig. 3 B is shown according to the backlight module of the display device of one embodiment of the invention and is subject to the machine-processed schematic diagram that optical element absorbs.
Fig. 4 is shown according to the schematic diagram of the display device of one embodiment of the invention.
Fig. 5, Fig. 6, Fig. 7 to Fig. 8 are the spectrograms of the backlight module being shown according to different embodiments of the invention.
Fig. 9 is the spectrogram illustrating a Z stimulus value, a Y stimulus value and an X stimulus value.
Drawing reference numeral:
10,20: display device
100,120,200,220: plate
102,202: base material
104,112: metal level
106: oxide layer
108a: active layers
108b: doped layer
110,210: etching barrier layer
113a, 113b, 213a, 213b: protective layer
114: conductive layer
116: dielectric layer
118: clearance control layer
140,240: blue phase liquid crystal layer
160,180,260,280: optical element
162,182,262,282: Polarizer
164,184,264,284: quarter-wave plate
2-2: tangent line
A1, A2: district
A, P, J, K, n1, n2: direction of principal axis
C1: electric capacity
BL: backlight module
L1: electrode structure
L11, L12: electrode
K1, K2: optically-active
S1: switch element
SL: external environment light
V: opening
Detailed description of the invention
In order to the above-mentioned and other aspect of the present invention there being understanding more preferably, preferred embodiment cited below particularly, and coordinate appended accompanying drawing, it is described in detail below:
The problem of the blue phase liquid crystal height operation bias that following description inventor knows and settling mode, and apply the display device that this settling mode is developed.
Blue phase liquid crystal display utilizes when being biased to produce electric field so that the equivalent refractive index ellipsoid of blue phase liquid crystal becomes anisotropic, produces birefringence (birefringence) effect, and the formula of birefringence is Δ n=λ KE2, wherein, λ is optical wavelength, and K is Kerr coefficient, and E is the electric field being biased generation.Therefore, if wishing to reduce the bias applied, it is possible to set about from improving Kerr coefficient K.The formula of Kerr coefficient is as follows:Wherein, K is Kerr coefficient, and Δ n is birefringence, and Δ ε is dielectric anisotropy (dielectricanisotropy), and k is coefficient of elasticity, and P is that helical axis is from (Pitch).
Owing to the operating temperature range of blue phase liquid crystal is comparatively narrow, it is possible to use macromolecule provides network structure with stable blue phase liquid crystal, and then improves the operative temperature scope of blue phase liquid crystal.Blue phase liquid crystal (the PolymerStabilizedBluePhaseLiquidCrystal of macromolecule stabilization, PSBPLC) liquid crystal host, optical rotatory substance doping and macromolecule are generally included, PSBPLC will not change the high-speed responsive of blue phase liquid crystal, but needs to improve the bright dark-state being biased to control blue phase liquid crystal.And, in blue phase liquid crystal, the optical rotatory substance of doping is more many, the clear point (clearingpoint) of liquid crystal can be made to decline so that liquid crystal is not normal in the display effect of hot environment.Reduce optical rotatory substance doping in blue phase liquid crystal, not only avoid the problem that clear point declines, it is also possible to promote Kerr coefficient K and be biased to reduce.
But, improve helical axis from (pitch), also can change the wavelength of the light that blue phase liquid crystal reflects.According to Bragg reflection theorem (Bragg ' slaw), when the wavelength of light and the lattice size of blue phase liquid crystal are close, the Constructive interaction of light can be produced so that the light of specific wavelength can be reflected by blue phase liquid crystal.Formula according to Bragg reflection, it is possible to the wavelength peak of the light of design blue phase liquid crystal reflection, the wavelength peak of reflection lightWherein, n is mean refractive index, P be helical axis from, h, k, l are the Miller indices of liquid crystal lattice.Doping owing to reducing optical rotatory substance can improve the helical axis of blue phase liquid crystal from P, and improves the wavelength peak λ of reflection lightpeakSo that the wavelength peak λ of reflection lightpeakBeing moved to the scope of visible ray (wavelength 380nm～780nm), under a bright ambient environment, display easily produces very strong reflective.Accordingly, it would be desirable to design a kind of display device under the premise not affecting luminous efficiency, reduce the degree to Ambient.
Refer to Figure 1A～Figure 1B, it is shown according to the schematic diagram of display device 10 of one embodiment of the invention.Display device 10 shown in Figure 1A, is that the display device 10 with Figure 1B illustrates in the section of tangent line 2-2.As shown in Figure 1A, display device 10, including first substrate 100, second substrate 120 and blue phase liquid crystal layer 140, blue phase liquid crystal layer 140 is arranged between first substrate 100 and second substrate 120.First substrate 100 has an a cabling district A1 and viewing area A2, and first substrate 100 includes base material 102, switch element S1, electric capacity C1 and electrode structure L1.Extension of section between electric capacity C1 and electrode structure L1 is to omit to represent with section.Switch element S1 and electric capacity C1 is located at cabling district A1, and electrode structure L1 is located at viewing area A2.Electrode structure L1 can as a pixel electrode and community electrode at least one.Switch element S1 is electrode electrically connected structure L1.
In this embodiment, electrode structure L1 is such as rectangle and is formed by composite layer stack.Certainly, electrode structure L1 can also be that simple layer is formed, and is not limited as.Composite bed stacking electrode structure L1 can include oxide layer 106, active layers 108a, etching barrier layer 110, dielectric layer 117, protective layer 113b and conductive layer 114, can also only include etching barrier layer 110 and conductive layer 114.It is preferred that conductive layer 114 is covered in the top of other composite beds, but, conductive layer 114 can also be arranged at other positions of electrode structure L1, and is not limited as.Additionally, the height of each material layer of electrode structure L1 and width can differ, and it is not limited as.
In an embodiment, dielectric layer 117 is the group selecting autoxidisable substance, silicide, nitride, nitrogen oxides, resin and combination thereof to constitute, and conductive layer 114 is the group selecting to constitute from metal, indium tin oxide, indium-zinc oxide, indium stannum zinc oxide, indium gallium zinc oxide and combination thereof.The height of electrode structure L1 be 2 μm (microns) to 10 μm, and the Breadth Maximum of electrode structure L1 is 2 μm to 20 μm.
In an embodiment, switch element S1 is such as a membrane transistor element, including metal level 104, oxide layer 106, active layers 108a, doped layer 108b, etching barrier layer 110, metal level 112, protective layer 113a, dielectric layer 116 and clearance control layer 118.Protective layer 113a is arranged on the metal level 112 of part, in order to guard metal layer 112.Dielectric layer 116 is such as include light shield layer and/or protective layer.It should be noted that; in technical process; the etching barrier layer 110 of electrode structure L1 can be concurrently form with identical material with the etching barrier layer 110 of switch element S1, and, the protective layer 113a of the protective layer 113b and switch element S1 of electrode structure L1 concurrently forms with identical material.Therefore, it can under the premise not increasing the complicated degree of technique, improve the height of electrode structure L1.Single-layer electrodes layer relatively thin compared to tradition for electrode structure L1 in this embodiment, under applying identical voltage, it is provided that bigger horizontal component of electric field intensity, thus can be applicable to the bigger electric field of needs and just can drive in macromolecule stabilization blue phase liquid crystal display device.
As shown in Figure 1A, display device 10 more can include optical element 160 and optical element 180, it is respectively arranged at first substrate 100 and the outside of second substrate 120, optical element 160 can include Polarizer 162 and quarter-wave plate (quarterwaveplate) 164, and optical element 180 can include Polarizer 182 and quarter-wave plate 184.Quarter-wave plate 164 and quarter-wave plate 184, it is possible to adjust the phase place of the light passed through.Polarizer 162 and Polarizer 182 are respectively arranged at quarter-wave plate 164 and the outside of quarter-wave plate 184.
Figure 1B is the top view illustrating the display device 10 such as Figure 1A.It should be noted that Figure 1B only illustrates the top view spread pattern of a kind of electrode structure L1, be not limited to the form of electrode structure.Electrode structure can also be other shaped formation symmetrically or non-symmetrically such as zigzag, radial, pectination.Refer to Fig. 2 A, Fig. 2 B to Fig. 2 C, it illustrates the schematic top plan view of other forms of the electrode structure L1 such as Figure 1B.
Refer to Fig. 2 A, the electrode L11 and electrode L12 of electrode structure, is include with the form of the arrangement of J direction of principal axis and the arrangement of K direction of principal axis.When polarization direction respectively 0 degree (A direction of principal axis) and 90 degree (P direction of principal axis) of Polarizer 162 and Polarizer 182 (being illustrated in Figure 1A), in electrode L11 and electrode L12, the branch electrodes of J direction of principal axis arrangement and A axle clamp θ 1 jiao, the branch electrodes of K direction of principal axis arrangement and A axle clamp θ 2 jiaos, the branch electrodes of J direction of principal axis arrangement and P axle clamp θ 3 jiaos, the branch electrodes of K direction of principal axis arrangement and P axle clamp θ 4 jiaos.In this embodiment, θ 1 is essentially 45 degree, and θ 2 is essentially 135 degree, and θ 3 is essentially 135 degree, and θ 4 is essentially 45 degree.Therefore, the direction of an electric field in every field presss from both sides about 45 degree and 135 degree of angles with the polarization direction of Polarizer respectively.
Fig. 3 A is the schematic diagram of the mechanism of the display device elimination Ambient being shown according to one embodiment of the invention.In this for convenience of description, simplify the detail structure of display device 10, only illustrate blue phase liquid crystal layer 140 and optical element 180, and optical element 180 includes Polarizer 182 and quarter-wave plate 184.External environment light SL includes n1 axle and the axial light of n2, and n1 axle and n2 axle orthogonal.The polarization direction of Polarizer 182 arranges along n1 axle, and the angle of the slow axis (not illustrating) of the polarization direction of Polarizer 182 and quarter-wave plate 184 is essentially 45 degree.
When external environment light SL is by Polarizer 182, only the axial light of n1 can continue through, and undertaken being incident to blue phase liquid crystal layer 140 after primary phase place is adjusted to an optically-active K1 (being such as a right-handed rotation) by quarter-wave plate 184, another optically-active K2 (being such as a left-handed rotation) is converted to, again by quarter-wave plate 184 and become the axial linear light of n2 after secondary phase place adjustment after being subject to the reflection of blue phase liquid crystal layer 140.Owing to the phase place adjustment of twice just makes the environment light SL of incidence by n1 direction of principal axis 90-degree rotation to n2 direction of principal axis, so can be absorbed by Polarizer 182, thus, it is possible to solve reflective excessively strong problem.
In this embodiment, backlight module BL is arranged at the outside of Polarizer 162.Backlight module BL can be the white light source that a blue light-emitting diode (LED) forms with yellow phosphor, or the white light source that blue-ray LED, blue-ray LED form plus red-emitting phosphor plus green phosphor and blue-ray LED.Certainly, can also be the white light source that forms of blue-ray LED, red-light LED and green light LED, and be not limited as.In an embodiment, it may not be necessary to quarter-wave plate 164 and quarter-wave plate 184, directly with a dye coating, it it is such as an organic dye layer, in order to absorb the light of specific band, reach to absorb the effect of the light of the reflected light of blue phase liquid crystal layer 140, it is to avoid the problem that reflection light is too strong.The optical element of organic dyestuff can also be mixed in blue phase liquid crystal layer 140, or mixed is located in Polarizer 182.
The backlight module BL that Fig. 3 B is the display device being shown according to one embodiment of the invention is subject to the machine-processed schematic diagram that optical element absorbs.In this for convenience of description, simplify the detail structure of display device 10 (Figure 1A can be suitable to), only illustrate blue phase liquid crystal layer 140 and optical element 160, and optical element 160 includes Polarizer 162 and quarter-wave plate 164.External environment light SL includes the light in n1 and n2 direction, and n1 and n2 is orthogonal.The angle of the slow axis (not illustrating) of the polarization direction of Polarizer 162 and quarter-wave plate 164 is essentially 45 degree.
In this embodiment, the light that backlight module BL sends, include n1 direction of principal axis and the axial light of n2 equally.Only the axial light of n1 can continue through to quarter-wave plate 164 after by Polarizer 162, to carry out being incident to blue phase liquid crystal layer 140 after primary phase place is adjusted to an optically-active K1 (being such as a right-handed rotation), another optically-active K2 (being such as a left-handed rotation) is converted to, again by quarter-wave plate 164 and become the axial linear light of n2 after secondary phase place adjustment after being subject to the reflection of blue phase liquid crystal layer 140.Owing to the phase place adjustment of twice just makes the backlight module BL light sent by n1 direction of principal axis 90-degree rotation to n2 direction of principal axis, so can be absorbed by Polarizer 162, therefore, if reflecting and the light wave band that absorbed by Polarizer 162 is without selection if being subject to blue phase liquid crystal layer 140, then the luminous efficiency that can cause display device is not good.
Refer to Fig. 4, it is shown according to the schematic diagram of display device 20 of another embodiment of the present invention.As shown in Figure 4, display device 20 includes first substrate 200, second substrate 220 and blue phase liquid crystal layer 240.First substrate 200 has an a cabling district A1 and viewing area A2, and first substrate 200 includes base material 202, switch element 204 and an electrode structure 206, and switch element S2 is located at cabling district A1, and electrode structure L2 is located at viewing area A2.In technical process, the etching barrier layer 210 of electrode structure L2 can be concurrently form with identical material with the etching barrier layer 210 of switch element S2.The protective layer 213a of the protective layer 213b and switch element S2 of electrode structure L2 concurrently forms with identical material.Display device 20 can be identical with the element corresponding to display device 10, process materials and technology mode, and difference is only that the electrode structure L2 of display device 20 is trapezoidal.In other embodiments, electrode structure can be asymmetric stacking projected electrode, as long as lower floor's width of electrode structure is relatively larger than or is equal to the width of last layer, the stacking number of plies is also not intended to.
Mechanism of action between the external environment light SL of display device 20 and backlight module BL and optical element 260 and 280, it is that the mechanism of action between the external environment light SL with aforesaid display device 10 and backlight module BL and optical element 160 and 180 is identical, repeats no more in this.In other words, no matter display device 10 or display device 20, it is possible to the light wave of the light of design blue phase liquid crystal layer 140 and the selected reflection of blue phase liquid crystal layer 240 is longer than a specific band, with the problem avoiding luminous efficiency to reduce.The selection of the optical wavelength of blue phase liquid crystal layer 140 and the reflected light of blue phase liquid crystal layer 240, will be explained in rear.
Fig. 5 is the spectrogram of the backlight module BL illustrating an embodiment.Transverse axis indicates that wavelength (nm), and the longitudinal axis represents that luminous relative light intensity, luminous relative light intensity are a relative definition value and former represent with arbitrary unit (ArbitraryUnit).As it is shown in figure 5, the frequency spectrum of the light source formed with blue-ray LED and yellow phosphor, there being relatively small light intensity in the interval of 490nm～500nm.The light source that blue-ray LED and yellow phosphor form, it is necessary to coordinate the use of colored filter just can demonstrate the colour of different color.
Please then refer to Fig. 6, Fig. 7, Fig. 8 to Fig. 9 are the spectrogram of the backlight module BL being shown according to different embodiments of the invention.Fig. 6 illustrates backlight module BL that blue-ray LED the forms light transmittance spectrogram after the colored filter different by two kinds from yellow phosphor.In this embodiment, colored filter (does not show) to adopt and is located on array base palte the form of (ColorFilterOnArray, COA) and is arranged on first substrate 100.
As shown in Figure 6, curve 1 is the light transmittance frequency spectrum illustrating the first colored filter, and curve 2 is the light transmittance frequency spectrum illustrating the second colored filter.Curve 3 is to illustrate the blue-ray LED such as Fig. 5 and the yellow phosphor light source light transmittance frequency spectrum by the first colored filter, and curve 4 is to illustrate the blue-ray LED such as Fig. 5 and the yellow phosphor light source light transmittance frequency spectrum by the second colored filter.In this embodiment, two troughs of curve 3 and curve 4 very close to, be 490nm and 580nm respectively.Represent there is minimum light intensity by the light source after colored filter at the wavelength of 490nm and 580nm.Further, by the frequency spectrum of the light source after colored filter close to 470nm～510nm interval with in the interval of 560nm～590nm, have relatively minimal light intensity.
Refer to Fig. 7, it illustrates the spectrogram of the backlight module BL that blue-ray LED forms plus green phosphor and red-emitting phosphor.Its different curve represents the spectrogram of different backlight module, the backlight module that BL1～BL3 respectively blue-ray LED forms plus green phosphor and red-emitting phosphor.The light source that blue-ray LED forms plus green phosphor and red-emitting phosphor, it is possible to be applied to a color-sequential method (FieldSequentialColor, FSC) and light, without the setting of colored filter.As shown in Figure 7, the frequency spectrum of the light source formed plus green phosphor and red-emitting phosphor with blue-ray LED has two troughs, lay respectively at 495nm and 590nm, and have relatively small light intensity in the interval of 470nm～520nm and in the interval of 570nm～610nm.
Please then refer to Fig. 8, it illustrates backlight module BL that blue-ray LED forms plus green phosphor and red-emitting phosphor by the light transmittance spectrogram after colored filter.The curve of the combination 1～combination 4 of Fig. 8 is the spectrogram of the combination 1～4 representing the different backlight module of optional colored filter collocation 4 kinds different.As shown in Figure 8, needing to consider the penetrance impact of colored filter by the light source after colored filter, therefore two troughs of the frequency spectrum of light source have a little change, are close to 495nm and close to 580nm respectively.Further, by the frequency spectrum of the light source after colored filter close to 475nm～515nm interval with in the interval of 560nm～590nm, have relatively minimal light intensity.
The spectrogram of Fig. 9 is according to the CIE1931 standard colorimetric observer's XYZ function depicted between 400nm to 700nm.X stimulus value contributes to human eye and is mainly red colour vision plus slightly blue colour vision, and Y stimulus value contributes to human eye and is mainly green colour vision, and Z stimulus value contributes to human eye and is mainly blue colour vision.As it is shown in figure 9, Z stimulus value and Y stimulus value have a cross point, corresponding to the wavelength value close to 500nm.The cross point plus-minus 20nm of Z stimulus value and Y stimulus value is defined as a transposition section, substantially between 480nm to 520nm, and is preferably between 490nm to 510nm.Y stimulus value and X stimulus value have a cross point, corresponding to the wavelength value close to 580nm.Further, the cross point plus-minus 20nm of Y stimulus value and X stimulus value is defined as another transposition section, substantially between 560nm to 600nm, and is preferably between 570nm to 590nm.
In order to reduce the selective reflecting phenomenon of blue phase liquid crystal layer, the display device 10 of the above embodiment of the present invention and display device 20, the spectrum peak of its light being subject to blue phase liquid crystal layer 140 and blue phase liquid crystal layer 240 reflection respectively defines in above-mentioned transposition section.Can learn from the explanation of aforementioned Fig. 6 and Fig. 8, even if blue phase liquid crystal layer 140 and blue phase liquid crystal layer 240 optionally reflect the light of the wavelength in transposition section, light source is also poor by the penetrance falling within the light within the scope of this transposition section after colored filter, therefore the light intensity of its loss is still relatively low, thus display device 10 and the luminous efficiency of display device 20 can be maintained.That is, the above embodiments of the present invention are by the Wavelength design of blue phase liquid crystal layer selective reflecting light in transposition section, and when the light of blue phase liquid crystal layer reflection environment light falls within this transposition section, the environment light reflected by blue phase liquid crystal layer can be eliminated.And from Fig. 5, Fig. 6, Fig. 7 to Fig. 8, penetrance in this transposition section is originally just poor, if blue phase liquid crystal layer reflection also falls within this transposition section from the light of backlight module, represent only to lose through the light of blue phase liquid crystal layer and fall within the light of wavelength in this transposition section, so losing less, thus the luminous efficiency of display device can be maintained.
In sum, no matter the light source of backlight module is applied the need of cooperation colored filter, the display device of the above embodiment of the present invention, it is defined in transposition section by the spectrum peak of the reflection light of reflection selected by blue phase liquid crystal layer, owing in transposition section, the light intensity of light and the penetrance of traverse colored filter are all relative low points, even if light is subject to the absorption of Polarizer or organic dyestuff, the light intensity of its loss is still relatively low, thus can maintain the luminous efficiency of display device.In sum, although the present invention is disclosed above with preferred embodiment, and so it is not limited to the present invention.Those skilled in the art, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is when being as the criterion with claim institute confining spectrum.
Claims (18)
1. a display device, it is characterised in that described display device includes:
One first substrate, has a viewing area；
One second substrate is relative with described first substrate and set；
One blue phase liquid crystal layer, is arranged between described first substrate and described second substrate, and described blue phase liquid crystal layer optionally reflects a light, and the spectrum peak of described light is positioned at a transposition section；And
One optical element, at least there is the function of the phase place adjusting described light and absorb the function one of both of described light, wherein said transposition section correspondence is to the intersection point of a stimulus value frequency spectrum and another stimulus value frequency spectrum, and described transposition section is optical wavelength interval between 490nm to 510nm.
2. display device as claimed in claim 1, it is characterised in that described optical element is at least located at the side of described blue phase liquid crystal layer.
3. display device as claimed in claim 1, it is characterized in that, described display device more includes a backlight module, in order to provide a backlight, described backlight module includes at least one blue light-emitting diode and at least one phosphor, and described phosphor includes a yellow phosphor, a green phosphor and a red-emitting phosphor at least one.
4. display device as claimed in claim 1, it is characterised in that described optical element includes a quarter-wave plate.
5. display device as claimed in claim 1, it is characterised in that described optical element includes an extinction dyestuff, and described extinction dyestuff is mixed in described blue phase liquid crystal layer.
6. display device as claimed in claim 1, it is characterised in that described first substrate includes:
One base material；
Multiple electrode structures, are located on described base material；And
Multiple switch elements, are located on described base material and are electrically connected to the described electrode structure of correspondence, and wherein each described electrode structure is the electrode of stratiform, trapezoidal shape, T-shaped shape or asymmetric convex shape.
7. display device as claimed in claim 6, it is characterized in that, each described electrode structure includes a conductive layer and an etching barrier layer, described conductive layer covers described etching barrier layer, and each described switch element has another etching barrier layer, described etching barrier layer is identical with the material of another etching barrier layer described and concurrently forms.
8. display device as claimed in claim 7, it is characterised in that described electrode structure more includes a dielectric layer, described dielectric layer is the group selecting autoxidisable substance, silicide, nitride, nitrogen oxides, resin and combination thereof to constitute.
9. display device as claimed in claim 4, it is characterised in that described optical element more includes a Polarizer, and the angle of the slow axis being arranged at the side of described quarter-wave plate, the polarizing axis of described Polarizer and described quarter-wave plate is 45 degree.
10. a display device, it is characterised in that described display device includes:
One first substrate, has a viewing area；
One second substrate is relative with described first substrate and set；
One blue phase liquid crystal layer, is arranged between described first substrate and described second substrate, and described blue phase liquid crystal layer optionally reflects a light, and the spectrum peak of described light is positioned at a transposition section；And
One optical element, at least there is the function of the phase place adjusting described light and perform to absorb the function one of both of described light, wherein said transposition section correspondence is to the intersection point of a stimulus value frequency spectrum and another stimulus value frequency spectrum, and described transposition section is optical wavelength interval between 570nm to 590nm.
11. display device as claimed in claim 10, it is characterised in that described optical element is at least located at the side of described blue phase liquid crystal layer.
12. display device as claimed in claim 10, it is characterized in that, more include a backlight module, in order to provide a backlight, described backlight module includes at least one blue light-emitting diode and at least one phosphor, and described phosphor includes a yellow phosphor, a green phosphor and a red-emitting phosphor at least one.
13. display device as claimed in claim 10, it is characterised in that described optical element includes a quarter-wave plate.
14. display device as claimed in claim 10, it is characterised in that described optical element includes an extinction dyestuff, and described extinction dyestuff is mixed in described blue phase liquid crystal layer.
15. display device as claimed in claim 10, it is characterised in that described first substrate includes:
One base material；
Multiple electrode structures, are located on described base material；And
Multiple switch elements, are located on described base material and are electrically connected to the described electrode structure of correspondence, and wherein each described electrode structure is the electrode of stratiform, trapezoidal shape, T-shaped shape or asymmetric convex shape.
16. display device as claimed in claim 15, it is characterized in that, each described electrode structure includes a conductive layer and an etching barrier layer, described conductive layer covers described etching barrier layer, and each described switch element has another etching barrier layer, described etching barrier layer is identical with the material of another etching barrier layer described and concurrently forms.
17. display device as claimed in claim 16, it is characterised in that described electrode structure more includes a dielectric layer, described dielectric layer is the group selecting autoxidisable substance, silicide, nitride, nitrogen oxides, resin and combination thereof to constitute.
18. display device as claimed in claim 13, it is characterised in that described optical element more includes a Polarizer, the angle of the slow axis being arranged at the side of described quarter-wave plate, the polarizing axis of described Polarizer and described quarter-wave plate is 45 degree.
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| CN109062448B (en) * | 2013-11-12 | 2021-07-02 | 宸鸿光电科技股份有限公司 | Organic light emitting diode touch display device |
| CN105116660A (en) * | 2015-08-25 | 2015-12-02 | 昆山龙腾光电有限公司 | Blue phase liquid crystal display panel |
| CN105301860A (en) * | 2015-11-09 | 2016-02-03 | 昆山龙腾光电有限公司 | Blue-phase liquid crystal display panel |
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| CN102031121A (en) * | 2009-09-29 | 2011-04-27 | 奇美电子股份有限公司 | Liquid crystals composition and liquid crystal display |
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| US8964161B2 (en) * | 2009-06-16 | 2015-02-24 | Kent State University | Electro-optical device and method for controlling color with polymer stabilized liquid crystal |
| JP2011065090A (en) * | 2009-09-18 | 2011-03-31 | Hitachi Displays Ltd | Liquid crystal display apparatus |
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| CN101174069A (en) * | 2006-10-31 | 2008-05-07 | 精工爱普生株式会社 | Liquid crystal device and electronic equipment |
| CN102031121A (en) * | 2009-09-29 | 2011-04-27 | 奇美电子股份有限公司 | Liquid crystals composition and liquid crystal display |
| CN102393580A (en) * | 2011-10-04 | 2012-03-28 | 友达光电股份有限公司 | Blue phase liquid crystal display device |
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