CN102662281B - Blue phase liquid crystal panel and display device - Google Patents
Blue phase liquid crystal panel and display device Download PDFInfo
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- CN102662281B CN102662281B CN2012101466885A CN201210146688A CN102662281B CN 102662281 B CN102662281 B CN 102662281B CN 2012101466885 A CN2012101466885 A CN 2012101466885A CN 201210146688 A CN201210146688 A CN 201210146688A CN 102662281 B CN102662281 B CN 102662281B
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- 239000000758 substrate Substances 0.000 claims abstract description 48
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- 239000000463 material Substances 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 239000002861 polymer material Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
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- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 230000010287 polarization Effects 0.000 abstract description 7
- 238000002834 transmittance Methods 0.000 abstract description 7
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133504—Diffusing, scattering, diffracting elements
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133553—Reflecting elements
- G02F1/133555—Transflectors
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13793—Blue phases
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Abstract
The invention discloses a blue phase liquid crystal panel and a display device, relates to the field of designing and manufacturing of liquid crystal panels, and aims to reduce the driving voltage of the blue phase liquid crystal panel. The blue phase liquid crystal panel comprises pixel electrodes which are positioned on the inner side of a first substrate and arranged in an array manner, common electrodes positioned on the inner side of a second substrate, a first prism layer positioned between a blue phase liquid crystal layer and a first polarization sheet and a second prism layer positioned between the blue phase liquid crystal layer and a second polarization sheet, wherein a pixel region in which each pixel electrode is positioned is divided into a transmittance region and a reflection region; and a refraction angle formed in a manner that an incident light ray perpendicular to the substrates passes through a part of the first prism layer, which is positioned on the transmittance regions, is greater than that formed in a manner that the incident light ray passes through a part of the second prism layer, which is positioned on the reflection regions, so that optical path differences of the light rays from the transmittance regions and the reflection regions through the blue phase liquid crystal layer are the same. The invention is suitable for designing and manufacturing of transmittance and reflection type blue phase liquid crystal panels and display devices.
Description
Technical Field
The invention relates to the field of design and manufacture of liquid crystal panels and display devices, in particular to a transflective blue phase liquid crystal panel and a display device.
Background
Liquid crystal display devices can be classified into three types, i.e., transmissive, reflective, and transflective, according to the type of light source used. Among them, the transflective liquid crystal display device has advantages of both the transmissive and reflective liquid crystal display devices, and thus is widely used in display devices of electronic products.
In order to improve the display quality of the liquid crystal display, achieve higher contrast, faster response time and wider viewing angle, a blue phase liquid crystal material having a fast response characteristic is increasingly gaining attention. The blue phase is a liquid crystal phase between the isotropic phase and the cholesteric phase, and exists in a very narrow temperature range, approximately only in the temperature interval of 1 ℃. However, in recent years, it has been found that the temperature range of the blue phase liquid crystal after polymer stabilization is greatly widened, and the blue phase liquid crystal can be used as a liquid crystal display material in a substantially satisfactory range.
The blue phase liquid crystal display, which is the most promising next generation display, has the following characteristics: (1) the blue phase liquid crystal display has the characteristics of large visual field angle and good dark state. (2) The theoretical response time of the blue phase liquid crystal display is extremely short, and can reach a millisecond level or below. (3) The blue phase liquid crystal display does not need an alignment layer necessary for other liquid crystal displays, thereby reducing the manufacturing cost and simplifying the manufacturing process.
However, the conventional blue-phase liquid crystal display generally adopts a double-cell thickness structure to ensure that the optical path difference between the transmissive region and the reflective region is consistent, and has two great technical problems, high driving voltage and low light efficiency.
Disclosure of Invention
Embodiments of the present invention provide a blue phase liquid crystal panel and a display device, which are used to reduce a driving voltage of a transflective blue phase liquid crystal panel and improve light efficiency.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
the present invention provides a blue phase liquid crystal panel, comprising: the liquid crystal display comprises a first substrate, a second substrate, a blue phase liquid crystal layer, a first polarizing film and a second polarizing film, wherein the first substrate and the second substrate are formed in a matched mode; the blue phase liquid crystal panel further includes: the pixel electrodes are arranged on the inner side of the first substrate in an array mode, the common electrode is arranged on the inner side of the second substrate, the first prism layer is arranged between the blue phase liquid crystal layer and the first polaroid, and the second prism layer is arranged between the blue phase liquid crystal layer and the second polaroid; wherein,
the pixel area where each pixel electrode is located is divided into a transmission area and a reflection area; the refraction angle of the part of the incident light vertical to the substrate, which passes through the first prism layer and is positioned in the transmission area, is larger than that of the part of the incident light which passes through the second prism layer and is positioned in the reflection area, so that the optical path difference generated when the light of the transmission area and the light of the reflection area pass through the blue phase liquid crystal layer is the same.
The invention also provides a display device which comprises the blue phase liquid crystal panel.
According to the transflective blue phase liquid crystal panel and the display device provided by the embodiment of the invention, the pixel electrode arranged on the inner side of the first substrate and the common electrode arranged on the inner side of the second substrate can generate a uniform vertical electric field under the condition of electrification, so that the driving voltage of the blue phase liquid crystal display can be reduced; in addition, in order to realize the display of the blue phase liquid crystal panel under the vertical electric field, the invention adds the first prism layer and the second prism layer according to the different types of the blue phase liquid crystal panel, so that the incident light of the original vertical substrate is deflected, and the inclined light correspondingly generates optical path difference when passing through the blue phase liquid crystal layer driven by the vertical electric field, thereby realizing the control of the transmittance of the light through the change of the vertical electric field intensity; the driving voltage is reduced and the light efficiency is improved due to the vertical electric field driving; in addition, the structure with the thickness of a single box is adopted in the invention, so that the difficulty of the manufacturing process can be simplified.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a transflective blue phase liquid crystal panel provided by the present invention when no voltage is applied;
fig. 2 is a schematic structural view of the transflective blue phase liquid crystal panel shown in fig. 1 when a voltage is applied.
Reference numerals:
001-first substrate, 002-second substrate, 003-blue phase liquid crystal layer, 004-first polarizing plate, 005-second polarizing plate, 006-pixel electrode, 007-common electrode, 008-reflective layer;
101-a first prism layer, 102-a second prism layer.
Detailed Description
The prior art blue phase liquid crystal panel is driven by a horizontal electric field, and the driving voltage of the blue phase liquid crystal panel is relatively high. The present invention provides a blue phase liquid crystal panel driven by a vertical electric field, since electric field lines of the vertical electric field (i.e., an electric field perpendicular to the substrate) are more uniform, which is advantageous for reducing the driving voltage of the blue phase liquid crystal panel.
First, the characteristics of the blue phase liquid crystal molecules will be briefly described. When no voltage is applied, the blue phase liquid crystal molecules have isotropic characteristics; when a voltage is applied, the blue phase liquid crystal molecules have a birefringence characteristic in one direction, and the blue phase liquid crystal molecules are aligned in the direction of the electric field.
Due to the above characteristics of the blue phase liquid crystal molecules, if only the type of the driving electric field is changed, the normal display function of the blue phase liquid crystal panel cannot be realized. Specifically, when no voltage is applied, the blue phase liquid crystal molecules are in an isotropic state, so that the incident light will not generate an optical path difference through the blue phase liquid crystal layer, and the polarization direction will not be changed. When voltage is applied, the long axis of the blue phase liquid crystal molecules is along the direction of the electric field lines of the vertical electric field under the action of the vertical electric field; thus, the incident light passes through the blue phase liquid crystal layer without generating an optical path difference and also without changing the polarization direction. Since the polarization direction of the incident light is not changed regardless of the application of voltage, the transmittance of the light cannot be controlled by the magnitude of the applied voltage, and the display of the blue phase liquid crystal panel cannot be realized.
In order to enable the blue phase liquid crystal panel to normally display under the driving of a vertical electric field, the invention provides a transflective blue phase liquid crystal panel.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, the present invention provides a transflective blue phase liquid crystal panel, including: a first substrate 001 and a second substrate 002 formed by facing each other, a blue phase liquid crystal layer 003 sandwiched between the two substrates, a first polarizing plate 004 located outside the first substrate, and a second polarizing plate 005 located outside the second substrate; the liquid crystal panel further includes: pixel electrodes 006 disposed inside the first substrate and arranged in an array, a common electrode 007 disposed inside the second substrate, a first prism layer 101 disposed between the blue phase liquid crystal layer 003 and the first polarizing plate 004, and a second prism layer 102 disposed between the blue phase liquid crystal layer 003 and the second polarizing plate 005; wherein,
each pixel region where the pixel electrode 006 is located is divided into a transmissive region and a reflective region; wherein, the portion of the first prism layer 101 located in the transmissive region is used for deflecting the light incident through the first polarizer 004, the portion of the second prism layer 102 located in the reflective region is used for deflecting the light incident through the second polarizer 005 and the light emitted, and the refraction angle of the incident light of the vertical substrate passing through the portion of the first prism layer 101 located in the transmissive region is larger than that of the portion passing through the portion of the second prism layer 102 located in the reflective region, so that the optical path length difference generated when the light of the transmissive region and the light of the reflective region passes through the blue phase liquid crystal layer 003 is the same.
Since the portion of the first prism layer 101 located in the reflective region does not work, the portion of the first prism layer 101 located in the reflective region may have any shape, and it is needless to say that the first prism layer 101 only includes the portion located in the transmissive region.
The second prism layer 102 may be only present in the reflective region, so that the propagation direction of the emergent light of the transmissive region is still perpendicular to the substrate, and further, the portion of the second prism layer 102 located in the transmissive region and the portion of the first prism layer 101 located in the transmissive region have the same shape and are disposed oppositely. The term "opposed arrangement" means that one surface of the prism layers having the same shape is the inner side of the prism layer, and the other surface having the same shape is the outer side of the prism layer. For example, referring to fig. 1 and 2, the portions of the first prism layer 101 and the second prism layer 102 in the transmission region have the same shape, and both include two surfaces, i.e., a plane and a folded surface, the plane of each prism layer serves as the outer side of the prism layer, and the folded surface of each prism layer serves as the inner side of the prism layer; of course, the reverse is also possible. And because the shape of the part of the first prism layer 101 in the transmission region and the shape of the part of the second prism layer 102 in the reflection region are generally not consistent, the shape of the part of the second prism layer 102 in the transmission region and the shape of the part of the second prism layer 102 in the reflection region are also not consistent.
The blue phase liquid crystal layer 003 includes blue phase liquid crystal molecules.
The first prism layer 101 and the second prism layer 102 are transparent layers having any shape that can refract light; preferably, two surfaces of the portion of the first prism layer 101 in the transmission region are respectively a plane and a symmetrical triangular wave-shaped folding surface; two surfaces of the part of the second prism layer 102 located in the reflection area are respectively a plane and a symmetrical triangular wave-shaped folding surface. In all embodiments of the invention, the symmetrical triangular wave fold is explained as follows: the symmetrical triangular wavy fold plane has a cross section of a symmetrical triangular wave and intersecting lines of adjacent two side faces are parallel to each other, and the side face inclination angles of the side faces of the symmetrical triangular wavy fold plane are all equal, and the side face inclination angle is an included angle between the side face and the substrate plane. Referring to fig. 1 and 2, the side slope angles of the symmetrical triangular wave-shaped folds of the first prism layer 101 in the transmissive region are all equal, as indicated by a1, and the side slope angles of the symmetrical triangular wave-shaped folds of the second prism layer 102 in the reflective region are all equal, as indicated by a 2. Since the shape of the portion of the second prism layer 102 in the transmissive region is preferably the same as the shape of the portion of the first prism layer 101 in the transmissive region, two surfaces of the portion of the second prism layer 102 in the transmissive region are also a plane and a symmetrical triangular corrugated surface, respectively.
More preferably, the plane of the first prism layer 101 is the outer side of the first prism layer 101, and the symmetrical triangular folding surface is the inner side; while the plane of the second prism layer 102 (including the portion located in the transmissive region and the portion located in the reflective region) serves as the outer side of the second prism layer 102 and the symmetrical triangular corrugated fold plane serves as the inner side. This allows the light to change the direction of travel of the primary light when passing through the first prism layer or the second prism layer, only when passing through the symmetrical triangular wave fold. Of course, the folded surface of the first prism layer 101 may be the outer side and the flat surface of the first prism layer 101 may be the inner side, and the folded surface of the second prism layer 102 may be the outer side and the flat surface of the second prism layer 102 may be the inner side.
Further, in the embodiment of the present invention, in a manner that a refraction angle of an incident light ray passing through the first prism layer 101 in the transmissive region is larger than that of an incident light ray passing through the second prism layer 102 in the reflective region, it is preferable that: the side surface inclination angle of the symmetrical triangular wave-shaped folding surface of the portion of the first prism layer 101 located in the transmission region is larger than that of the symmetrical triangular wave-shaped folding surface of the portion of the second prism layer 102 located in the reflection region. Wherein the side inclination angle of the symmetrical triangular wave-shaped folding plane of the portion of the first prism layer 101 located in the transmissive region is represented by a1, and the side inclination angle of the symmetrical triangular wave-shaped folding plane of the portion of the second prism layer 102 located in the reflective region is represented by a2, i.e. a1 > a 2. Regarding the problem that a1 should be larger than a2, it is necessary to adjust the optical path length difference generated when the light rays in the transmissive region and the reflective region pass through the blue phase liquid crystal layer 003 to be the same. In addition, since the shape of the portion of the second prism layer 102 located in the transmissive region is preferably the same as that of the portion of the first prism layer 101 located in the transmissive region, that is, the side surfaces of the portions of the prism layers located in the transmissive region are inclined at the same angle, a 1.
Preferably, the side surface of the symmetrical triangular wave-shaped folding surface of the portion of the first prism layer 101 located in the transmission region is inclined at an angle a1 ranging from 30 ° to 60 °; the side surface inclination angle a2 of the symmetrical triangular wave-shaped folding surface of the part of the second prism layer 102 located in the reflection area is in the range of 10-30 degrees. The boundary values are optional values.
Further preferably, the side face inclination angle a1 of the symmetrical triangular wave-shaped folding face of the portion of the first prism layer 101 located in the transmission region is 42.5 °; the side slope angle a2 of the symmetrical triangular wave-shaped folding plane of the portion of the second prism layer 102 located in the reflection area is 14.5 °.
In principle, the first prism layer 101 may be located at any position between the blue phase liquid crystal layer 003 and the first polarizing plate 004, but in order to minimize the influence of the added first prism layer on the liquid crystal panel manufacturing process, it is preferable to locate the first prism layer 101 between the first substrate 001 and the first polarizing plate 004, referring to the drawings. Similarly to the position of the first prism layer 101, the second prism layer 102 may be positioned between the blue phase liquid crystal layer 003 and the second polarizing plate 005, but in order to minimize the influence of the added second prism layer on the liquid crystal panel manufacturing process, it is preferable to position the second prism layer 102 between the second substrate 002 and the second polarizing plate 005, as shown in the drawing.
The material of the first prism layer 101 and the second prism layer 102 is one of glass, a silicon wafer material, a polymer material, and a resin material, and preferably, the same material is used for both prism layers.
Fig. 1 is a schematic structural diagram of a blue phase liquid crystal panel when no voltage is applied. In the transmission region, an incident light perpendicular to the substrate is converted into a linearly polarized light by the first polarizer 004, the linearly polarized light is converted into an oblique light after passing through the first prism layer 101, the oblique light does not generate an optical path difference after passing through the blue phase liquid crystal layer 003 in an isotropic state, and if the polarization directions of the first polarizer 004 and the second polarizer 005 form an included angle of 90 degrees, an emergent light is completely blocked by the second polarizer 005; meanwhile, in the reflective region, the incident light perpendicular to the substrate is converted into linearly polarized light by the second polarizer 005, the linearly polarized light becomes oblique light after passing through the second prism layer 102 for the first time, the oblique light does not generate optical path difference after passing through the isotropic blue phase liquid crystal layer 003, and is refracted by the second prism layer 102 again, the propagation direction of the oblique light is adjusted to be the emergent light perpendicular to the substrate, the polarization direction of the emergent light is changed by 90 degrees due to reflection, so the emergent light is completely blocked by the second polarizer 005, and dark state display is realized in the reflective region and the transmissive region.
FIG. 2 is a schematic structural diagram of a blue phase liquid crystal panel when a voltage is applied. In the transmissive region, the incident light perpendicular to the substrate is converted into linearly polarized light by the first polarizer 004, which becomes oblique light after passing through the first prism layer 101, while in the reflective region, the incident light perpendicular to the substrate is converted into linearly polarized light by the second polarizer 005, which becomes oblique light after passing through the second prism layer 102 for the first time; since the refraction angle of the incident light passing through the portion of the first prism layer 101 in the transmissive region is larger than that of the incident light passing through the portion of the second prism layer 102 in the reflective region, that is, the light in the transmissive region enters the blue phase liquid crystal layer 003 at a more oblique angle (more horizontal) than the light in the reflective region, the birefringence Δ n of the light passing through the blue phase liquid crystal layer in the transmissive region is larger than the birefringence Δ n of the light passing through the blue phase liquid crystal layer in the transmissive region1Greater than the birefringence (delta n) of light passing through the blue phase liquid crystal layer in the reflection region2. Since the light in the reflection region passes through the blue phase liquid crystal layer twice, the light travels a distance d through the blue phase liquid crystal layer in the reflection region2Approximately the propagation distance d of light passing through the blue phase liquid crystal layer in the transmission region12 times of, i.e. roughly d2＝2d1(ii) a In the embodiment of the invention, the value is made to be delta n1d1＝Δn2d2Only by adjusting the magnitude of the applied voltage to approximately Δ n1＝2Δn2The semi-transparent and semi-reflective display effect can be achieved. Further, the oblique light rays of the transmissive region can be adjusted to be emergent light rays perpendicular to the substrate by disposing the second prism layer 102 on the transmissive region.
It should be noted that, in order to clearly describe the structures to be protected by the present invention, the structures irrelevant to the present invention are simplified or omitted in the embodiments and the drawings, and the structures simplified or omitted in the embodiments and the drawings are easily obtained by those skilled in the art without creative efforts, so that the detailed description is omitted in the embodiments.
According to the transflective blue phase liquid crystal panel provided by the embodiment of the invention, the pixel electrode arranged on the inner side of the first substrate and the common electrode arranged on the inner side of the second substrate can generate a uniform vertical electric field under the condition of electrification, so that the driving voltage of the blue phase liquid crystal display can be reduced; in addition, in order to realize the display of the blue phase liquid crystal panel under the vertical electric field, the invention adds the first prism layer and/or the second prism layer according to the different types of the blue phase liquid crystal panel, so that the light rays incident from the original vertical substrate are deflected, and the optical path difference is correspondingly generated when the oblique light rays pass through the blue phase liquid crystal layer driven by the vertical electric field, thereby realizing the control of the transmittance of the light rays through the change of the vertical electric field intensity. The vertical electric field is more uniform, so that the driving voltage of the blue phase liquid crystal panel is reduced, and the light efficiency can be further improved under the same driving voltage; in addition, the structure with single box thickness is adopted in the invention, so that the difficulty of the manufacturing process can be simplified.
The embodiment also provides a display device, which includes any one of the above blue phase liquid crystal panels, and the display device may be a product or a component having any display function, such as a liquid crystal display, a liquid crystal television, a digital photo frame, a mobile phone, a tablet computer, and the like.
The prism layers involved in all embodiments of the present invention can be manufactured by the following method:
the first method is to manufacture the prism layer by adopting a mould.
Specifically, a mold is manufactured by wet etching or machining and the like, and then the manufactured mold is used for manufacturing the prism layer by casting molding or transfer molding.
And secondly, manufacturing the prism layer by adopting the conventional hard die coating technology.
Specifically, firstly, applying mechanical pressure to an uncured raw material film by using a grating roller with a prism-like convex structure to form a prism layer structure under the transfer printing action of the grating roller; then, a prism layer is formed through a series of curing processes such as UV or infrared.
And thirdly, manufacturing the prism layer by adopting a soft film forming technology.
Specifically, a grating roller with a concave structure corresponding to the prism protrusion is adopted, the raw material is dripped into the concave structure by a dripper on the grating roller, so that the prism structure is formed in the concave structure of the grating roller, and then the raw material is transferred to a corresponding substrate. Then, a prism layer is formed through a series of curing processes such as UV or infrared.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A blue phase liquid crystal panel, comprising: the liquid crystal display comprises a first substrate, a second substrate, a blue phase liquid crystal layer, a first polarizing film and a second polarizing film, wherein the first substrate and the second substrate are formed in a matched mode; the pixel electrodes are arranged on the inner side of the first substrate in an array mode, and the common electrodes are arranged on the inner side of the second substrate; it is characterized by also comprising: a first prism layer between the blue phase liquid crystal layer and the first polarizing plate, and a second prism layer between the blue phase liquid crystal layer and the second polarizing plate; wherein,
the pixel area where each pixel electrode is located is divided into a transmission area and a reflection area; the refraction angle of the part of the incident light vertical to the substrate, which passes through the first prism layer and is positioned in the transmission area, is larger than that of the part of the incident light which passes through the second prism layer and is positioned in the reflection area, so that the optical path difference generated when the light of the transmission area and the light of the reflection area pass through the blue phase liquid crystal layer is the same.
2. The blue phase liquid crystal panel according to claim 1, wherein a portion of the second prism layer located in the transmissive region is formed in a shape corresponding to and opposite to a portion of the first prism layer located in the transmissive region.
3. The blue phase liquid crystal panel according to claim 2, wherein two faces of the portion of the first prism layer located in the transmissive region are a plane and a symmetrical triangular wave-shaped folding face, respectively;
two surfaces of the part of the second prism layer, which is positioned in the reflecting area, are respectively a plane and a symmetrical triangular wavy folding surface.
4. The blue phase liquid crystal panel according to claim 3, wherein the incident light of the vertical substrate having a larger refraction angle through a portion of the first prism layer located in the transmissive area than through a portion of the second prism layer located in the reflective area comprises:
the side surface inclination angle of the symmetrical triangular wave-shaped folding surface of the part of the first prism layer positioned in the transmission area is larger than that of the symmetrical triangular wave-shaped folding surface of the part of the second prism layer positioned in the reflection area.
5. The blue phase liquid crystal panel according to claim 4, wherein the first prism layer has a side surface inclination angle of a symmetrical triangular wave-shaped folding surface at a portion of the transmissive area in a range of 30 ° to 60 °;
the side surface inclination angle of the symmetrical triangular wave-shaped folding surface of the part of the second prism layer positioned in the reflecting area ranges from 10 degrees to 30 degrees.
6. The blue phase liquid crystal panel according to claim 5, wherein the side surface of the symmetrical triangular wave-shaped folding surface of the portion of the first prism layer located in the transmission region is inclined at an angle of 42.5 °;
the side surface inclination angle of the symmetrical triangular wavy folding surface of the part of the second prism layer positioned in the reflecting area is 14.5 degrees.
7. The blue phase liquid crystal panel according to any one of claims 3 to 6, wherein the plane of the first prism layer is an outer side, and the symmetrical triangular wave-shaped folding surface is an inner side;
the plane of the second prism layer is the outer side, and the symmetrical triangular wavy folding surface is the inner side.
8. The blue phase liquid crystal panel according to any one of claims 1 to 6, wherein said first prism layer is positioned between said first substrate and said first polarizer;
the second prism layer is positioned between the second substrate and the second polarizer.
9. The blue phase liquid crystal panel according to any one of claims 1 to 6, wherein the materials of said first prism layer and said second prism layer are glass, silicon wafer material, polymer material or resin material, respectively.
10. A display device, comprising: the blue phase liquid crystal panel according to any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101466885A CN102662281B (en) | 2012-05-11 | 2012-05-11 | Blue phase liquid crystal panel and display device |
| PCT/CN2012/083098 WO2013166807A1 (en) | 2012-05-11 | 2012-10-17 | Blue-phase liquid crystal panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101466885A CN102662281B (en) | 2012-05-11 | 2012-05-11 | Blue phase liquid crystal panel and display device |
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| CN102662281A CN102662281A (en) | 2012-09-12 |
| CN102662281B true CN102662281B (en) | 2013-11-13 |
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| CN102662281B (en) * | 2012-05-11 | 2013-11-13 | 京东方科技集团股份有限公司 | Blue phase liquid crystal panel and display device |
| CN103018894B (en) * | 2012-12-13 | 2014-12-03 | 京东方科技集团股份有限公司 | Optical device, and control method and display device thereof |
| CN105068305B (en) * | 2015-09-15 | 2017-12-05 | 京东方科技集团股份有限公司 | Color membrane substrates, display panel and display device |
| JP7159101B2 (en) * | 2019-04-16 | 2022-10-24 | 株式会社ジャパンディスプレイ | Display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813842A (en) * | 2009-12-16 | 2010-08-25 | 友达光电股份有限公司 | Semi-penetrable and semi-reflecting liquid-crystal display |
| CN101976002A (en) * | 2010-11-02 | 2011-02-16 | 昆山龙腾光电有限公司 | Blue phase liquid crystal display panel and liquid crystal display device |
| CN102231027A (en) * | 2011-06-29 | 2011-11-02 | 四川大学 | Transmission-reflection blue-phase liquid crystal display with corrugated electrode |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3507018B2 (en) * | 2000-08-29 | 2004-03-15 | シャープ株式会社 | Transmissive and reflective liquid crystal display |
| US6801281B2 (en) * | 2002-05-06 | 2004-10-05 | University Of Central Florida | Single cell gap transflective liquid crystal display with slanted reflector above transmissive pixels |
| JP2004199006A (en) * | 2002-12-20 | 2004-07-15 | Koninkl Philips Electronics Nv | Light converging substrate, display device using the same and its manufacturing method |
| WO2008029555A1 (en) * | 2006-09-07 | 2008-03-13 | Sharp Kabushiki Kaisha | Polarization control system and display device |
| KR20110083141A (en) * | 2010-01-13 | 2011-07-20 | 삼성전자주식회사 | Liquid crystal display apparatus |
| CN102662281B (en) * | 2012-05-11 | 2013-11-13 | 京东方科技集团股份有限公司 | Blue phase liquid crystal panel and display device |
-
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- 2012-10-17 WO PCT/CN2012/083098 patent/WO2013166807A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813842A (en) * | 2009-12-16 | 2010-08-25 | 友达光电股份有限公司 | Semi-penetrable and semi-reflecting liquid-crystal display |
| CN101976002A (en) * | 2010-11-02 | 2011-02-16 | 昆山龙腾光电有限公司 | Blue phase liquid crystal display panel and liquid crystal display device |
| CN102231027A (en) * | 2011-06-29 | 2011-11-02 | 四川大学 | Transmission-reflection blue-phase liquid crystal display with corrugated electrode |
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| WO2013166807A1 (en) | 2013-11-14 |
| CN102662281A (en) | 2012-09-12 |
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