CN115248518A - Cholesterol liquid crystal display device and manufacturing method thereof - Google Patents
Cholesterol liquid crystal display device and manufacturing method thereof Download PDFInfo
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- CN115248518A CN115248518A CN202110453368.3A CN202110453368A CN115248518A CN 115248518 A CN115248518 A CN 115248518A CN 202110453368 A CN202110453368 A CN 202110453368A CN 115248518 A CN115248518 A CN 115248518A
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- HVYWMOMLDIMFJA-DPAQBDIFSA-N cholesterol Chemical compound C1C=C2C[C@@H](O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2 HVYWMOMLDIMFJA-DPAQBDIFSA-N 0.000 title claims abstract description 230
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 125
- 235000012000 cholesterol Nutrition 0.000 title claims abstract description 115
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 239000000758 substrate Substances 0.000 claims abstract description 266
- 230000031700 light absorption Effects 0.000 claims abstract description 20
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 claims description 208
- 239000000463 material Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000003086 colorant Substances 0.000 claims description 3
- 238000007747 plating Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
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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
- G02F1/139—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 based on orientation effects in which the liquid crystal remains transparent
- G02F1/1391—Bistable or multi-stable liquid crystal cells
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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
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
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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
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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Abstract
The invention discloses a cholesterol liquid crystal display device which comprises a first light absorption layer, a first substrate, a first cholesterol liquid crystal layer, a second transparent substrate, a second cholesterol liquid crystal layer, a third transparent substrate, a third cholesterol liquid crystal layer and a fourth transparent substrate which are sequentially stacked from bottom to top. Electrode layers are arranged on two sides of the first cholesterol liquid crystal layer, the second cholesterol liquid crystal layer and the third cholesterol liquid crystal layer. The second light absorption layer is arranged on one side surface of the second transparent substrate, and the third light absorption layer is arranged on one side surface of the third transparent substrate and is used for absorbing light rays in a specific wavelength range. Therefore, the cholesterol liquid crystal display device provided by the invention has smaller overall thickness and can save the arrangement space.
Description
Technical Field
The present invention relates to the field of liquid crystal display technology, and is especially one kind of cholesterol liquid crystal display device and its making process.
Background
The cholesteric liquid crystal display is one of liquid crystal displays, wherein the cholesteric liquid crystal has a bistable characteristic: that is, there are two stable states in the state without external force, which is the biggest difference from the TFT liquid crystal display and the OLED display commonly used today.
The cholesteric liquid crystal molecules are arranged in two stable states, namely a Focal Conic State (Focal Conic State) and a Planar State (Planar State), so that the cholesteric liquid crystal has a bistable characteristic, namely the cholesteric liquid crystal can maintain the original liquid crystal molecule arrangement State without external energy. When a voltage is applied, the arrangement state of the cholesterol liquid crystal molecules can be controlled to be switched between two stable states of a focal conic arrangement state and a planar arrangement state. As mentioned above, when the cholesteric liquid crystal is in a planar arrangement state, light with a specific wavelength is reflected; on the contrary, when the cholesteric liquid crystal is in a focal conic arrangement state, light can penetrate through the cholesteric liquid crystal. Therefore, the cholesterol liquid crystal can be controlled to be transmitted by light or reflect light with specific wavelength by using the voltage applied to the cholesterol liquid crystal.
The conventional cholesteric liquid crystal display is manufactured by manufacturing three independent cholesteric liquid crystal modules, wherein each cholesteric liquid crystal module comprises an upper substrate, a lower substrate and cholesteric liquid crystals clamped between the upper substrate and the lower substrate, and then the three cholesteric liquid crystal modules are laminated in a sticking way and other ways to finish the manufacturing of the cholesteric liquid crystal display. The cholesteric liquid crystal display manufactured by the method has larger overall thickness, and the whole manufacturing process is more complicated and very inconvenient.
Therefore, the present invention is directed to a cholesteric liquid crystal display device and a method for manufacturing the same to solve the above problems.
Disclosure of Invention
The invention aims to provide a cholesterol liquid crystal display device and a manufacturing method thereof, which can reduce the whole thickness of the cholesterol liquid crystal display device, save the arrangement space and have simple and convenient whole manufacturing process.
To achieve at least one of the advantages or other advantages, an embodiment of the invention provides a cholesteric liquid crystal display device, which includes a first substrate, a second transparent substrate, a third transparent substrate, a fourth transparent substrate, a first cholesteric liquid crystal layer sandwiched between the first substrate and the second transparent substrate, a second cholesteric liquid crystal layer sandwiched between the second transparent substrate and the third transparent substrate, a third cholesteric liquid crystal layer sandwiched between the third transparent substrate and the fourth transparent substrate, a first light absorbing layer disposed on a side of the first substrate away from the first cholesteric liquid crystal layer, a second light absorbing layer disposed on a side of the second transparent substrate, a third light absorbing layer disposed on a side of the third transparent substrate, a first lower electrode layer disposed on a side of the first substrate close to the first cholesteric liquid crystal layer, a first upper electrode layer disposed on a side of the second transparent substrate close to the first cholesteric liquid crystal layer, a second transparent substrate disposed on a side of the second transparent substrate close to the second cholesteric liquid crystal layer, and a third transparent substrate disposed on a side of the second transparent substrate close to the third transparent substrate.
The first cholesterol liquid crystal layer is used for generating a first color light, and the first color light has a first wavelength range. The second cholesterol liquid crystal layer is used for generating a second color light, and the second color light has a second wavelength range. The third cholesterol liquid crystal layer is used for generating third color light, and the third color light has a third wavelength range. The first light absorption layer is used for absorbing light rays. The second light absorption layer is used for absorbing the light in the second wavelength range. The third light absorption layer is used for absorbing the light in the third wavelength range. The electrode layers on the upper and lower sides of each cholesterol liquid crystal layer are used for applying voltage to the cholesterol liquid crystal layer.
In some embodiments, the second light absorbing layer is located between the second transparent substrate and the second lower electrode layer, and the third light absorbing layer is located between the third transparent substrate and the third lower electrode layer.
In some embodiments, the second light absorbing layer is located between the second transparent substrate and the second lower electrode layer, and the third light absorbing layer is located between the third transparent substrate and the second upper electrode layer.
In some embodiments, the second light absorbing layer is between the second transparent substrate and the first upper electrode layer, and the third light absorbing layer is between the third transparent substrate and the second upper electrode layer.
In some embodiments, the second light absorbing layer is located between the second transparent substrate and the first upper electrode layer, and the third light absorbing layer is located between the third transparent substrate and the third lower electrode layer.
In some embodiments, the first cholesteric liquid crystal layer includes a first left-handed cholesteric liquid crystal layer and a first right-handed cholesteric liquid crystal layer, one of the first left-handed cholesteric liquid crystal layer and the first right-handed cholesteric liquid crystal layer is close to the first substrate, the other one is close to the second transparent substrate, a fifth transparent substrate is included between the first left-handed cholesteric liquid crystal layer and the first right-handed cholesteric liquid crystal layer, and a fourth upper electrode layer and a fourth lower electrode layer are respectively attached to an upper surface and a lower surface of the fifth transparent substrate; the second cholesterol liquid crystal layer comprises a second left-handed cholesterol liquid crystal layer and a second right-handed cholesterol liquid crystal layer, one of the second left-handed cholesterol liquid crystal layer and the second right-handed cholesterol liquid crystal layer is close to the second transparent substrate, the other one of the second left-handed cholesterol liquid crystal layer and the second right-handed cholesterol liquid crystal layer is close to the third transparent substrate, a sixth transparent substrate is arranged between the second left-handed cholesterol liquid crystal layer and the second right-handed cholesterol liquid crystal layer, and a fifth upper electrode layer and a fifth lower electrode layer are respectively attached to the upper surface and the lower surface of the sixth transparent substrate; the third cholesterol liquid crystal layer comprises a third left-handed cholesterol liquid crystal layer and a third right-handed cholesterol liquid crystal layer, one of the third left-handed cholesterol liquid crystal layer and the third right-handed cholesterol liquid crystal layer is close to the third transparent substrate, the other one of the third left-handed cholesterol liquid crystal layer and the third right-handed cholesterol liquid crystal layer is close to the fourth transparent substrate, a seventh transparent substrate is arranged between the third left-handed cholesterol liquid crystal layer and the third right-handed cholesterol liquid crystal layer, and a sixth upper electrode layer and a sixth lower electrode layer are respectively attached to the upper surface and the lower surface of the seventh transparent substrate.
In some embodiments, the first light absorbing layer is made of black material.
In some embodiments, the color of the first, second and third colors of light is selected from one of the group consisting of red, blue and green, and the color of the first, second and third colors of light is different.
In some embodiments, the first substrate, the second transparent substrate, the third transparent substrate, and the fourth transparent substrate are rigid substrates or flexible substrates.
To achieve at least one of the above advantages or other advantages, another embodiment of the present invention further provides a method for manufacturing a cholesteric liquid crystal display device. The manufacturing method of the cholesterol liquid crystal display device comprises the following steps: providing a first substrate, a second transparent substrate, a third transparent substrate and a fourth transparent substrate, forming a first light absorption layer on the lower side of the first substrate, forming a second light absorption layer on one side of the second transparent substrate, and forming a third light absorption layer on one side of the third transparent substrate; forming a first lower electrode layer on the upper side of the first substrate, forming a first upper electrode layer and a second lower electrode layer on the lower side and the upper side of the second transparent substrate, forming a second upper electrode layer and a third lower electrode layer on the lower side and the upper side of the third transparent substrate, and forming a third upper electrode layer on the lower side of the fourth transparent substrate; adding a first cholesterol liquid crystal layer in the first lower electrode layer and the first upper electrode layer, adding a second cholesterol liquid crystal layer in the second lower electrode layer and the second upper electrode layer, and adding a third cholesterol liquid crystal layer in the third lower electrode layer and the third upper electrode layer, wherein the first cholesterol liquid crystal layer is used for generating first color light with a first wavelength range, the second cholesterol liquid crystal layer is used for generating second color light with a second wavelength range, the third cholesterol liquid crystal layer is used for generating third color light with a third wavelength range, the second light absorption layer is used for absorbing light with the second wavelength range, and the third light absorption layer is used for absorbing light with the third wavelength range.
Therefore, the cholesterol liquid crystal display device and the manufacturing method thereof provided by the invention have the advantages that the cholesterol liquid crystal display device is manufactured by firstly processing the two sides of each substrate and then adding the cholesterol liquid crystal layer between the two adjacent substrates, the overall thickness of the cholesterol liquid crystal display device can be reduced, the arrangement space is saved, and the overall manufacturing process is simple and convenient.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described below in detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It should be apparent that the drawings in the following description are only examples of the present application and are not intended to limit the embodiments of the present invention, and that other drawings may be derived from the drawings by those skilled in the art without inventive faculty. The drawings comprise:
FIG. 1A is a schematic cross-sectional view of a cholesteric liquid crystal display device in accordance with a first embodiment of the present invention;
FIG. 1B is a schematic cross-sectional view of a cholesteric liquid crystal display device in accordance with a second embodiment of the present invention;
FIG. 1C is a schematic cross-sectional view of a cholesteric liquid crystal display device in accordance with a third embodiment of the present invention;
FIG. 1D is a schematic cross-sectional view of a cholesteric liquid crystal display device in a fourth embodiment;
FIG. 2 is a schematic cross-sectional view of a cholesteric liquid crystal display device in a fifth embodiment; and
FIG. 3 is a schematic view illustrating a process for manufacturing a cholesteric liquid crystal display device according to the present invention.
The attached drawings are marked as follows: 10. 20, 30, 40, 50-cholesterol liquid crystal display devices; 110-a first substrate; 120-a second transparent substrate; 130-a third transparent substrate; 140-a fourth transparent substrate; 150-a fifth transparent substrate; 160-a sixth transparent substrate; 170-a seventh transparent substrate; 210-a first cholesterol liquid crystal layer; 211-a first l-cholesterol liquid crystal layer; 212-a first dextro-cholesterol liquid crystal layer; 220-a second cholesterol liquid crystal layer; 221-a second L-cholesterol liquid crystal layer; 222-a second dextro cholesterol liquid crystal layer; 230-a third cholesterol liquid crystal layer; 231-a third L-cholesterol liquid crystal layer; 232-a third D-cholesterol liquid crystal layer; 310 — a first upper electrode layer; 315 — first lower electrode layer; 320-a second upper electrode layer; 325 — a second lower electrode layer; 330-third upper electrode layer; 335-a third lower electrode layer; 340-a fourth upper electrode layer; 345-a fourth lower electrode layer; 350-fifth upper electrode layer; 355-a fifth lower electrode layer; 360-a sixth upper electrode layer; 365-a sixth lower electrode layer; 410-a first light absorbing layer; 420-a second light absorbing layer; 430-third light absorbing layer.
Detailed Description
Specific structural and functional details disclosed herein are merely representative and are provided for purposes of describing example embodiments of the present invention. This invention may, however, be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or component in question must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In addition, the term "comprises" and any variations thereof mean "including at least".
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integrally formed connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Referring to fig. 1A, fig. 1A is a schematic cross-sectional view of a cholesteric liquid crystal display device 10 according to a first embodiment of the invention. To achieve at least one of the above advantages or other advantages, a first embodiment of the present invention provides a cholesteric liquid crystal display device 10. As shown in fig. 1A, the cholesteric liquid crystal display device 10 includes a first substrate 110, a second transparent substrate 120, a third transparent substrate 130 and a fourth transparent substrate 140. The substrates may be rigid substrates, such as glass substrates or polymethylmethacrylate substrates. Alternatively, a flexible substrate, such as a substrate made of polyimide or polyethylene terephthalate as a main component, may be used. In addition to the materials exemplified above, the first substrate 110, the second transparent substrate 120, the third transparent substrate 130 and the fourth transparent substrate 140 may also be rigid substrates or flexible substrates made of other materials.
The first cholesteric liquid crystal layer 210 is sandwiched between the first substrate 110 and the second transparent substrate 120, and is configured to generate a first color light having a first wavelength range. The second cholesteric liquid crystal layer 220 is sandwiched between the second transparent substrate 120 and the third transparent substrate 130, and is configured to generate a second color light having a second wavelength range. The third cholesteric liquid crystal layer 230 is sandwiched between the third transparent substrate 130 and the fourth transparent substrate 140, and is configured to generate a third color light having a third wavelength range. For example, the first cholesteric liquid crystal layer 210 generates a red color, the second cholesteric liquid crystal layer 220 generates a green color, and the third cholesteric liquid crystal layer 230 generates a blue color. The first wavelength range corresponding to red light is 590nm to 740nm, the second wavelength range corresponding to green light is 500nm to 590nm, and the third wavelength range corresponding to blue light is 415nm to 500nm. However, the present invention is not limited thereto. In other embodiments, the first cholesteric liquid crystal layer 210 may also generate a green color light or a blue color light, the second cholesteric liquid crystal layer 220 may also generate a red color light or a blue color light, and the third cholesteric liquid crystal layer 230 may also generate a red color light or a green color light.
The first lower electrode layer 315 is disposed on one side of the first substrate 110 close to the first cholesteric liquid crystal layer 210, and the first upper electrode layer 310 is disposed on one side of the second transparent substrate 120 close to the first cholesteric liquid crystal layer 210. The first lower electrode layer 315 and the first upper electrode layer 310 are used for applying a voltage to the first cholesteric liquid crystal layer 210 to change the arrangement state of cholesteric liquid crystal molecules, so that the first cholesteric liquid crystal layer 210 generates a first color light, i.e., the first color light is reflected from incident light.
The second bottom electrode layer 325 is disposed on a side of the second transparent substrate 120 close to the second cholesteric liquid crystal layer 220. The second upper electrode layer 320 is disposed on a side of the third transparent substrate 130 close to the second cholesteric liquid crystal layer 220. The second bottom electrode layer 325 and the second top electrode layer 320 are used for applying a voltage to the second cholesteric liquid crystal layer 220 to change the arrangement state of the cholesteric liquid crystal molecules, so that the second cholesteric liquid crystal layer 220 generates a second color light, i.e., the second color light is reflected from the incident light.
The third bottom electrode layer 335 is disposed on one side of the third transparent substrate 130 close to the third cholesteric liquid crystal layer 230. The third upper electrode layer 330 is disposed on a side of the fourth transparent substrate 140 close to the third cholesteric liquid crystal layer 230. The third bottom electrode layer 335 and the third top electrode layer 330 are used for applying a voltage to the third cholesteric liquid crystal layer 230 to change the arrangement state of the cholesteric liquid crystal molecules, so that the third cholesteric liquid crystal layer 230 generates a third color light, i.e. the third color light is reflected from the incident light.
The first light absorbing layer 410 is located below the first substrate 110 and is used for absorbing light, so that the cholesteric liquid crystal display device 10 can show black. In one embodiment, the first light absorbing layer 410 is made of black material to absorb visible light.
The second light absorbing layer 420 is located between the second transparent substrate 120 and the second bottom electrode layer 325, and is used for absorbing light in a second wavelength range, so as to prevent the second color light in the incident light from further entering the first cholesteric liquid crystal layer 210 through the second transparent substrate 120, thereby improving the display performance of the cholesteric liquid crystal display device 10.
The third light absorbing layer 430 is disposed between the third transparent substrate 130 and the third bottom electrode layer 335, and is used for absorbing light in a third wavelength range, so as to prevent the third color light in the incident light from further entering the second cholesteric liquid crystal layer 220 through the third transparent substrate 130, thereby improving the display performance of the cholesteric liquid crystal display device 10.
Further, the cholesteric liquid crystal display device 10 can achieve a full-color display effect by arranging and combining the generated first color light, the generated second color light, and the generated third color light. The first lower electrode layer 315, the first upper electrode layer 310, the second lower electrode layer 325, the second upper electrode layer 320, the third lower electrode layer 335, and the third upper electrode layer 330 may be made of a transparent conductive material, such as Indium Tin Oxide (ITO). The first lower electrode layer 315, the first upper electrode layer 310, the second lower electrode layer 325, the second upper electrode layer 320, the third lower electrode layer 335, and the third upper electrode layer 330 are disposed on two sides of each substrate, but are not limited to contacting the substrate.
Referring to fig. 1B, fig. 1B is a schematic cross-sectional view of a cholesteric liquid crystal display device 20 according to a second embodiment of the invention. To achieve at least one of the above advantages or other advantages, a cholesterol liquid crystal display device 20 is provided in a second embodiment of the invention. As shown in fig. 1B, the cholesteric liquid crystal display device 20 includes a first substrate 110, a second transparent substrate 120, a third transparent substrate 130, and a fourth transparent substrate 140.
The first cholesteric liquid crystal layer 210 is sandwiched between the first substrate 110 and the second transparent substrate 120, and is configured to generate a first color light having a first wavelength range. The second cholesteric liquid crystal layer 220 is sandwiched between the second transparent substrate 120 and the third transparent substrate 130, and is configured to generate a second color light having a second wavelength range. The third cholesteric liquid crystal layer 230 is sandwiched between the third transparent substrate 130 and the fourth transparent substrate 140, and is configured to generate a third color light having a third wavelength range. For example, the first cholesteric liquid crystal layer 210 generates a red color light, the second cholesteric liquid crystal layer 220 generates a green color light, and the third cholesteric liquid crystal layer 230 generates a blue color light.
The first lower electrode layer 315 is disposed on a side of the first substrate 110 close to the first cholesteric liquid crystal layer 210, and the first upper electrode layer 310 is disposed on a side of the second transparent substrate 120 close to the first cholesteric liquid crystal layer 210. The first lower electrode layer 315 and the first upper electrode layer 310 are used for applying a voltage to the first cholesteric liquid crystal layer 210 to change an arrangement state of cholesteric liquid crystal molecules thereof, so that the first cholesteric liquid crystal layer 210 generates a first color light, i.e., the first color light is reflected from incident light.
The second bottom electrode layer 325 is disposed on a side of the second transparent substrate 120 close to the second cholesteric liquid crystal layer 220. The second upper electrode layer 320 is disposed on a side of the third transparent substrate 130 close to the second cholesteric liquid crystal layer 220. The second bottom electrode layer 325 and the second top electrode layer 320 are used for applying a voltage to the second cholesteric liquid crystal layer 220 to change the arrangement state of the cholesteric liquid crystal molecules, so that the second cholesteric liquid crystal layer 220 generates a second color light, i.e., the second color light is reflected from the incident light.
The third bottom electrode layer 335 is disposed on one side of the third transparent substrate 130 close to the third cholesteric liquid crystal layer 230. The third upper electrode layer 330 is disposed on a side of the fourth transparent substrate 140 close to the third cholesteric liquid crystal layer 230. The third bottom electrode layer 335 and the third top electrode layer 330 are used for applying a voltage to the third cholesteric liquid crystal layer 230 to change the arrangement state of the cholesteric liquid crystal molecules, so that the third cholesteric liquid crystal layer 230 generates a third color light, i.e. the third color light is reflected from the incident light.
The first light absorbing layer 410 is located below the first substrate 110 and is used for absorbing light, so that the cholesteric liquid crystal display device 20 can show black. In one embodiment, the first light absorbing layer 410 is made of black material to absorb visible light.
The second light absorbing layer 420 is located between the second transparent substrate 120 and the second bottom electrode layer 325, and is used for absorbing light in a second wavelength range, so as to prevent the second color light in the incident light from further entering the first cholesteric liquid crystal layer 210 through the second transparent substrate 120, thereby improving the display performance of the cholesteric liquid crystal display device 20.
The third light-absorbing layer 430 is disposed between the third transparent substrate 130 and the second upper electrode layer 320, and is used for absorbing light of a third wavelength range, so as to prevent the third color light in the incident light from further entering the second cholesteric liquid crystal layer 220 through the third transparent substrate 130, thereby improving the display performance of the cholesteric liquid crystal display device 20.
Referring to fig. 1C, fig. 1C is a schematic cross-sectional view of a cholesterol liquid crystal display device 30 according to a third embodiment of the invention. To achieve at least one of the above advantages or other advantages, a third embodiment of the invention provides a cholesteric liquid crystal display device 30. As shown in fig. 1C, the cholesteric liquid crystal display device 30 includes a first substrate 110, a second transparent substrate 120, a third transparent substrate 130 and a fourth transparent substrate 140.
The first cholesteric liquid crystal layer 210 is sandwiched between the first substrate 110 and the second transparent substrate 120, and is configured to generate a first color light having a first wavelength range. The second cholesteric liquid crystal layer 220 is sandwiched between the second transparent substrate 120 and the third transparent substrate 130, and is configured to generate a second color light having a second wavelength range. The third cholesteric liquid crystal layer 230 is sandwiched between the third transparent substrate 130 and the fourth transparent substrate 140, and is configured to generate a third color light having a third wavelength range. For example, the first cholesteric liquid crystal layer 210 generates a red color, the second cholesteric liquid crystal layer 220 generates a green color, and the third cholesteric liquid crystal layer 230 generates a blue color.
The first lower electrode layer 315 is disposed on a side of the first substrate 110 close to the first cholesteric liquid crystal layer 210, and the first upper electrode layer 310 is disposed on a side of the second transparent substrate 120 close to the first cholesteric liquid crystal layer 210. The first lower electrode layer 315 and the first upper electrode layer 310 are used for applying a voltage to the first cholesteric liquid crystal layer 210 to change the arrangement state of cholesteric liquid crystal molecules, so that the first cholesteric liquid crystal layer 210 generates a first color light, i.e., the first color light is reflected from incident light.
The second bottom electrode layer 325 is disposed on a side of the second transparent substrate 120 close to the second cholesteric liquid crystal layer 220. The second upper electrode layer 320 is disposed on a side of the third transparent substrate 130 close to the second cholesteric liquid crystal layer 220. The second bottom electrode layer 325 and the second top electrode layer 320 are used for applying a voltage to the second cholesteric liquid crystal layer 220 to change the arrangement state of the cholesteric liquid crystal molecules, so that the second cholesteric liquid crystal layer 220 generates a second color light, i.e., the second color light is reflected from the incident light.
The third bottom electrode layer 335 is disposed on a side of the third transparent substrate 130 close to the third cholesteric liquid crystal layer 230. The third upper electrode layer 330 is disposed on one side of the fourth transparent substrate 140 close to the third cholesteric liquid crystal layer 230. The third bottom electrode layer 335 and the third top electrode layer 330 are used for applying a voltage to the third cholesteric liquid crystal layer 230 to change the arrangement state of the cholesteric liquid crystal molecules, so that the third cholesteric liquid crystal layer 230 generates a third color light, i.e. the third color light is reflected from the incident light.
The first light absorbing layer 410 is located below the first substrate 110 and is used for absorbing light, so that the cholesteric liquid crystal display device 30 can show black. In one embodiment, the first light absorbing layer 410 is made of black material to absorb visible light.
The second light absorbing layer 420 is located between the second transparent substrate 120 and the first upper electrode layer 310, and is used for absorbing light in a second wavelength range, so as to prevent the second color light in the incident light from further entering the first cholesteric liquid crystal layer 210 through the second transparent substrate 120, thereby improving the display performance of the cholesteric liquid crystal display device 30.
The third light absorbing layer 430 is disposed between the third transparent substrate 130 and the second upper electrode layer 320, and is used for absorbing light in a third wavelength range, so as to prevent the third color light in the incident light from further entering the second cholesteric liquid crystal layer 220 through the third transparent substrate 130, thereby improving the display performance of the cholesteric liquid crystal display device 30.
Referring to fig. 1D, fig. 1D is a schematic cross-sectional view of a cholesteric liquid crystal display device 40 according to a fourth embodiment of the invention. To achieve at least one of the above advantages or other advantages, a fourth embodiment of the present invention provides a cholesteric liquid crystal display device 40. As shown in fig. 1D, the cholesteric liquid crystal display device 40 includes a first substrate 110, a second transparent substrate 120, a third transparent substrate 130 and a fourth transparent substrate 140.
The first cholesteric liquid crystal layer 210 is sandwiched between the first substrate 110 and the second transparent substrate 120, and is configured to generate a first color light having a first wavelength range. The second cholesteric liquid crystal layer 220 is sandwiched between the second transparent substrate 120 and the third transparent substrate 130, and is configured to generate a second color light having a second wavelength range. The third cholesteric liquid crystal layer 230 is sandwiched between the third transparent substrate 130 and the fourth transparent substrate 140, and is configured to generate a third color light having a third wavelength range. For example, the first cholesteric liquid crystal layer 210 generates a red color, the second cholesteric liquid crystal layer 220 generates a green color, and the third cholesteric liquid crystal layer 230 generates a blue color.
The first lower electrode layer 315 is disposed on one side of the first substrate 110 close to the first cholesteric liquid crystal layer 210, and the first upper electrode layer 310 is disposed on one side of the second transparent substrate 120 close to the first cholesteric liquid crystal layer 210. The first lower electrode layer 315 and the first upper electrode layer 310 are used for applying a voltage to the first cholesteric liquid crystal layer 210 to change an arrangement state of cholesteric liquid crystal molecules thereof, so that the first cholesteric liquid crystal layer 210 generates a first color light, i.e., the first color light is reflected from incident light.
The second bottom electrode layer 325 is disposed on a side of the second transparent substrate 120 close to the second cholesteric liquid crystal layer 220. The second upper electrode layer 320 is disposed on a side of the third transparent substrate 130 close to the second cholesteric liquid crystal layer 220. The second bottom electrode layer 325 and the second top electrode layer 320 are used for applying a voltage to the second cholesteric liquid crystal layer 220 to change the arrangement state of the cholesteric liquid crystal molecules, so that the second cholesteric liquid crystal layer 220 generates a second color light, i.e., the second color light is reflected from the incident light.
The third bottom electrode layer 335 is disposed on a side of the third transparent substrate 130 close to the third cholesteric liquid crystal layer 230. The third upper electrode layer 330 is disposed on a side of the fourth transparent substrate 140 close to the third cholesteric liquid crystal layer 230. The third bottom electrode layer 335 and the third top electrode layer 330 are used for applying a voltage to the third cholesteric liquid crystal layer 230 to change the arrangement state of the cholesteric liquid crystal molecules, so that the third cholesteric liquid crystal layer 230 generates a third color light, i.e. the third color light is reflected from the incident light.
The first light absorbing layer 410 is located below the first substrate 110 and is used for absorbing light, so that the cholesteric liquid crystal display device 40 can show black. In one embodiment, the first light absorbing layer 410 is made of black material to absorb visible light.
The second light absorbing layer 420 is located between the second transparent substrate 120 and the first upper electrode layer 310, and is used for absorbing light in a second wavelength range, so as to prevent the second color light in the incident light from further entering the first cholesteric liquid crystal layer 210 through the second transparent substrate 120, thereby improving the display performance of the cholesteric liquid crystal display device 40.
The third light absorbing layer 430 is disposed between the third transparent substrate 130 and the third bottom electrode layer 335, and is used for absorbing light in a third wavelength range, so as to prevent the third color light in the incident light from further entering the second cholesteric liquid crystal layer 220 through the third transparent substrate 130, thereby improving the display performance of the cholesteric liquid crystal display device 40.
Referring to fig. 2, fig. 2 is a schematic cross-sectional view of a cholesterol liquid crystal display device 50 according to a fifth embodiment of the invention. To achieve at least one of the above advantages or other advantages, a fifth embodiment of the present invention provides a cholesteric liquid crystal display device 50. As shown in fig. 2, compared to the cholesteric liquid crystal display device 10 in fig. 1A, the first cholesteric liquid crystal layer 210 includes a first left-handed cholesteric liquid crystal layer 211 and a first right-handed cholesteric liquid crystal layer 212 stacked up and down, the second cholesteric liquid crystal layer 220 includes a second left-handed cholesteric liquid crystal layer 221 and a second right-handed cholesteric liquid crystal layer 222 stacked up and down, and the third cholesteric liquid crystal layer 230 includes a third left-handed cholesteric liquid crystal layer 231 and a third right-handed cholesteric liquid crystal layer 232 stacked up and down. However, the present invention is not limited thereto. In other embodiments, the first right-handed cholesterol liquid crystal layer 212 may be located above the first left-handed cholesterol liquid crystal layer 211, the second right-handed cholesterol liquid crystal layer 222 may be located above the second left-handed cholesterol liquid crystal layer 221, and the third right-handed cholesterol liquid crystal layer 232 may be located above the third left-handed cholesterol liquid crystal layer 231. The first left-handed cholesterol liquid crystal layer 211 and the first right-handed cholesterol liquid crystal layer 212 may be disposed in parallel on the same layer, the second left-handed cholesterol liquid crystal layer 221 and the second right-handed cholesterol liquid crystal layer 222 may be disposed in parallel on the same layer, and the third left-handed cholesterol liquid crystal layer 231 and the third right-handed cholesterol liquid crystal layer 232 may be disposed in parallel on the same layer.
A fifth transparent substrate 150 is disposed between the first left-handed cholesteric liquid crystal layer 211 and the first right-handed cholesteric liquid crystal layer 212, and a fourth upper electrode layer 340 and a fourth lower electrode layer 345 are respectively attached to the upper surface and the lower surface of the fifth transparent substrate 150. The first bottom electrode layer 315 and the fourth bottom electrode layer 345 are used for applying a voltage to the first right-handed cholesteric liquid crystal layer 212, so that the first right-handed cholesteric liquid crystal layer 212 generates a first right-handed light. The first upper electrode layer 310 and the fourth upper electrode layer 340 are used for applying a voltage to the first laevorotation cholesterol liquid crystal layer 211, so that the first laevorotation cholesterol liquid crystal layer 211 generates a first laevorotation light. The first right-handed color light and the first left-handed color light have the same color.
A sixth transparent substrate 160 is disposed between the second left-handed cholesteric liquid crystal layer 221 and the second right-handed cholesteric liquid crystal layer 222, and a fifth upper electrode layer 350 and a fifth lower electrode layer 355 are respectively attached to the upper surface and the lower surface of the sixth transparent substrate 160. The second bottom electrode layer 325 and the fifth bottom electrode layer 355 are used for applying a voltage to the second right-handed cholesteric liquid crystal layer 222, so that the second right-handed cholesteric liquid crystal layer 222 generates a second right-handed light. The second upper electrode layer 320 and the fifth upper electrode layer 350 are used for applying a voltage to the second laevorotation cholesterol liquid crystal layer 221, so that the second laevorotation cholesterol liquid crystal layer 221 generates a second laevorotation light. The color of the second right-handed color light is the same as that of the second left-handed color light.
A seventh transparent substrate 170 is disposed between the third l-cholesteric liquid crystal layer 231 and the third d-cholesteric liquid crystal layer 232, and a sixth upper electrode layer 360 and a sixth lower electrode layer 365 are respectively attached to the upper surface and the lower surface of the seventh transparent substrate 170. The third bottom electrode layer 335 and the sixth bottom electrode layer 365 are used for applying a voltage to the third right-handed cholesteric liquid crystal layer 232, so that the third right-handed cholesteric liquid crystal layer 232 generates a third right-handed light. The third upper electrode layer 330 and the sixth upper electrode layer 360 are used for applying a voltage to the third laevo-rotation cholesterol liquid crystal layer 231, so that the third laevo-rotation cholesterol liquid crystal layer 231 generates a third laevo-rotation light. The third right-handed color light and the third left-handed color light have the same color.
Further, by combining the generated left-handed color light and the right-handed color light, the display capability of the cholesterol liquid crystal display device 50 can be further improved. The fifth transparent substrate 150, the sixth transparent substrate 160 and the seventh transparent substrate 170 may be rigid substrates or flexible substrates. The fourth upper electrode layer 340, the fourth lower electrode layer 345, the fifth upper electrode layer 350, the fifth lower electrode layer 355, the sixth upper electrode layer 360, and the sixth lower electrode layer 365 may be made of a transparent conductive material, such as Indium Tin Oxide (ITO). In addition, the fourth upper electrode layer 340, the fourth lower electrode layer 345, the fifth upper electrode layer 350, the fifth lower electrode layer 355, the sixth upper electrode layer 360, and the sixth lower electrode layer 365 are disposed on two sides of each substrate, but are not limited to be in contact with the substrate.
It should be noted that the positions of the second light absorbing layer 420 and the third light absorbing layer 430 are not limited to the areas shown in fig. 2, and in other embodiments, the positions of the second light absorbing layer 420 and the third light absorbing layer 430 in fig. 2 may be adjusted according to actual requirements by referring to the positions of the second light absorbing layer 420 and the third light absorbing layer 430 in fig. 1B to 1D.
Referring to fig. 3 in conjunction with fig. 1A, fig. 3 is a schematic flow chart of the cholesterol liquid crystal display device manufactured according to the present invention. To achieve at least one of the above advantages or other advantages, a sixth embodiment of the invention provides a method for manufacturing a cholesteric liquid crystal display device 10. As shown in the drawing, the method of manufacturing the cholesterol liquid crystal display device 10 includes the steps of:
s1: providing a first substrate, a second transparent substrate, a third transparent substrate and a fourth transparent substrate, and processing light absorption layers of the first substrate, the second transparent substrate and the third transparent substrate;
s2: processing the first substrate, the second transparent substrate, the third transparent substrate and the fourth transparent substrate by using the electrode layer;
s3: adding a first cholesterol liquid crystal layer into the first lower electrode layer and the first upper electrode layer, adding a second cholesterol liquid crystal layer into the second lower electrode layer and the second upper electrode layer, and adding a third cholesterol liquid crystal layer into the third lower electrode layer and the third upper electrode layer.
To explain further, the light absorbing layer processing operation in step S1 is to form a first light absorbing layer 410 on the lower side of the first substrate 110, a second light absorbing layer 420 on one side of the second transparent substrate 120, and a third light absorbing layer 430 on one side of the third transparent substrate 130. Referring to fig. 1A to 1D, the second light absorbing layer 420 may be selectively formed on the upper side or the lower side of the second transparent substrate 120, and the third light absorbing layer 430 may be selectively formed on the upper side or the lower side of the third transparent substrate 130, so as to meet various process requirements. The light absorbing layer may be formed on the substrate by coating or pasting a color photoresist or a film-like light filtering material. The light absorbing layer may be manufactured according to a CF (Color Filter) manufacturing process, and is completed by using spin (spin), spray (spray), slit (slit), or an interactive combination of the three. In addition, other conventional means may be used to form the light absorbing layer.
The electrode layer processing operation in step S2 includes forming a first lower electrode layer 315 on the upper side of the first substrate 110, forming a first upper electrode layer 310 and a second lower electrode layer 325 on the lower side and the upper side of the second transparent substrate 120, forming a second upper electrode layer 320 and a third lower electrode layer 335 on the lower side and the upper side of the third transparent substrate 130, and forming a third upper electrode layer 330 on the lower side of the fourth transparent substrate 140. The electrode layer can be formed by plating, photolithography, etching, etc., wherein the plating can be performed by sputtering, electroplating, chemical plating, evaporation, chemical vapor deposition, coating, etc.
In step S3, the first cholesteric liquid crystal layer 210 is used for generating a first color light having a first wavelength range, the second cholesteric liquid crystal layer 220 is used for generating a second color light having a second wavelength range, and the third cholesteric liquid crystal layer 230 is used for generating a third color light having a third wavelength range. The second light absorbing layer 420 is used for absorbing light of a second wavelength range. The third light absorbing layer 430 may be used to absorb light of a third wavelength range. The cholesterol liquid crystal layer can be added by ODF (One Drop Fill) or conventional vacuum injection.
In summary, compared with the conventional cholesteric liquid crystal display and the manufacturing method thereof, the cholesteric liquid crystal display 10 and the manufacturing method thereof provided by the present invention are manufactured by performing double-sided processing on each substrate to form the light absorbing layer and the electrode layer, and then adding the cholesteric liquid crystal layer between two adjacent substrates, so that the overall thickness of the cholesteric liquid crystal display 10 can be reduced, the installation space can be saved, and the whole manufacturing process of the cholesteric liquid crystal display 10 is simpler, more convenient and more efficient.
Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.
Claims (10)
1. A cholesteric liquid crystal display device, comprising:
a first substrate;
a second transparent substrate;
a third transparent substrate;
a fourth transparent substrate;
the first cholesterol liquid crystal layer is clamped between the first substrate and the second transparent substrate and is used for generating a first color light, and the first color light has a first wavelength range;
the second cholesterol liquid crystal layer is clamped between the second transparent substrate and the third transparent substrate and is used for generating second color light, and the second color light has a second wavelength range;
the third cholesterol liquid crystal layer is clamped between the third transparent substrate and the fourth transparent substrate and is used for generating third color light, and the third color light has a third wavelength range;
the first light absorption layer is arranged on one side of the first substrate, which is far away from the first cholesterol liquid crystal layer, and is used for absorbing light;
the second light absorption layer is arranged on one side surface of the second transparent substrate and is used for absorbing the light in the second wavelength range;
the third light absorption layer is arranged on one side surface of the third transparent substrate and is used for absorbing the light in the third wavelength range;
a first lower electrode layer disposed on one side of the first substrate close to the first cholesterol liquid crystal layer;
the first upper electrode layer is arranged on one side of the second transparent substrate close to the first cholesterol liquid crystal layer;
the second lower electrode layer is arranged on one side of the second transparent substrate close to the second cholesterol liquid crystal layer;
the second upper electrode layer is arranged on one side of the third transparent substrate close to the second cholesterol liquid crystal layer;
a third lower electrode layer disposed on one side of the third transparent substrate close to the third cholesteric liquid crystal layer; and
and the third upper electrode layer is arranged on one side of the fourth transparent substrate close to the third cholesterol liquid crystal layer.
2. The cholesteric liquid crystal display device according to claim 1, wherein the second light absorbing layer is between the second transparent substrate and the second lower electrode layer, and the third light absorbing layer is between the third transparent substrate and the third lower electrode layer.
3. The cholesteric liquid crystal display device according to claim 1, wherein the second light absorbing layer is between the second transparent substrate and the second lower electrode layer, and the third light absorbing layer is between the third transparent substrate and the second upper electrode layer.
4. The cholesteric liquid crystal display device according to claim 1, wherein the second light absorbing layer is between the second transparent substrate and the first upper electrode layer, and the third light absorbing layer is between the third transparent substrate and the second upper electrode layer.
5. The cholesteric liquid crystal display device according to claim 1, wherein the second light absorbing layer is between the second transparent substrate and the first upper electrode layer, and the third light absorbing layer is between the third transparent substrate and the third lower electrode layer.
6. The cholesteric liquid crystal display device according to claim 1, wherein the first cholesteric liquid crystal layer comprises a first left-handed cholesteric liquid crystal layer and a first right-handed cholesteric liquid crystal layer, one of the first left-handed cholesteric liquid crystal layer and the first right-handed cholesteric liquid crystal layer is close to the first substrate, the other one of the first left-handed cholesteric liquid crystal layer and the first right-handed cholesteric liquid crystal layer is close to the second transparent substrate, a fifth transparent substrate is included between the first left-handed cholesteric liquid crystal layer and the first right-handed cholesteric liquid crystal layer, and a fourth upper electrode layer and a fourth lower electrode layer are respectively attached to an upper surface and a lower surface of the fifth transparent substrate; the second cholesterol liquid crystal layer comprises a second left-handed cholesterol liquid crystal layer and a second right-handed cholesterol liquid crystal layer, one of the second left-handed cholesterol liquid crystal layer and the second right-handed cholesterol liquid crystal layer is close to the second transparent substrate, the other one of the second left-handed cholesterol liquid crystal layer and the second right-handed cholesterol liquid crystal layer is close to the third transparent substrate, a sixth transparent substrate is arranged between the second left-handed cholesterol liquid crystal layer and the second right-handed cholesterol liquid crystal layer, and a fifth upper electrode layer and a fifth lower electrode layer are respectively attached to the upper surface and the lower surface of the sixth transparent substrate; the third cholesterol liquid crystal layer comprises a third left-handed cholesterol liquid crystal layer and a third right-handed cholesterol liquid crystal layer, one of the third left-handed cholesterol liquid crystal layer and the third right-handed cholesterol liquid crystal layer is close to the third transparent substrate, the other one of the third left-handed cholesterol liquid crystal layer and the third right-handed cholesterol liquid crystal layer is close to the fourth transparent substrate, a seventh transparent substrate is arranged between the third left-handed cholesterol liquid crystal layer and the third right-handed cholesterol liquid crystal layer, and a sixth upper electrode layer and a sixth lower electrode layer are respectively attached to the upper surface and the lower surface of the seventh transparent substrate.
7. The cholesteric liquid crystal display device according to claim 1, wherein the first light absorbing layer is made of a black material.
8. The cholesteric liquid crystal display device according to claim 1, wherein the first color light, the second color light and the third color light are respectively one selected from a group consisting of red, blue and green, and the colors of the first color light, the second color light and the third color light are different.
9. The cholesteric liquid crystal display device according to claim 1, wherein the first substrate, the second transparent substrate, the third transparent substrate, and the fourth transparent substrate are rigid substrates or flexible substrates.
10. A method for manufacturing a cholesteric liquid crystal display device, the method comprising:
providing a first substrate, a second transparent substrate, a third transparent substrate and a fourth transparent substrate, forming a first light absorption layer on the lower side of the first substrate, forming a second light absorption layer on one side of the second transparent substrate, and forming a third light absorption layer on one side of the third transparent substrate;
forming a first lower electrode layer on the upper side of the first substrate, forming a first upper electrode layer and a second lower electrode layer on the lower side and the upper side of the second transparent substrate, forming a second upper electrode layer and a third lower electrode layer on the lower side and the upper side of the third transparent substrate, and forming a third upper electrode layer on the lower side of the fourth transparent substrate;
adding a first cholesterol liquid crystal layer in the first lower electrode layer and the first upper electrode layer, adding a second cholesterol liquid crystal layer in the second lower electrode layer and the second upper electrode layer, and adding a third cholesterol liquid crystal layer in the third lower electrode layer and the third upper electrode layer, wherein the first cholesterol liquid crystal layer is used for generating first color light with a first wavelength range, the second cholesterol liquid crystal layer is used for generating second color light with a second wavelength range, the third cholesterol liquid crystal layer is used for generating third color light with a third wavelength range, the second light absorption layer is used for absorbing light with the second wavelength range, and the third light absorption layer is used for absorbing light with the third wavelength range.
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| CN202110453368.3A CN115248518A (en) | 2021-04-26 | 2021-04-26 | Cholesterol liquid crystal display device and manufacturing method thereof |
| TW110117341A TWI779608B (en) | 2021-04-26 | 2021-05-13 | Cholesterol liquid crystal display device and cholesterol liquid crystal display device manufacturing method |
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| CN202110453368.3A CN115248518A (en) | 2021-04-26 | 2021-04-26 | Cholesterol liquid crystal display device and manufacturing method thereof |
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| CN1602444A (en) * | 2001-12-11 | 2005-03-30 | 富士通株式会社 | Display and its driving method |
| TW200702776A (en) * | 2005-07-04 | 2007-01-16 | Fujitsu Ltd | Liquid crystal display device |
| CN104199225A (en) * | 2014-08-21 | 2014-12-10 | 京东方科技集团股份有限公司 | Display panel, manufacturing method of display panel and display device |
| CN105242473A (en) * | 2015-10-30 | 2016-01-13 | 南方科技大学 | Cholesteric liquid crystal display device and preparation method of reflecting layer in cholesteric liquid crystal display device |
| CN110515246A (en) * | 2019-09-29 | 2019-11-29 | 福建捷联电子有限公司 | A kind of colorful liquid crystal display of stack cobasis plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201024844A (en) * | 2008-12-29 | 2010-07-01 | Ind Tech Res Inst | Cholesteric liquid crystal display devices |
| TWM590252U (en) * | 2019-06-11 | 2020-02-01 | 虹彩光電股份有限公司 | Cholesterol liquid crystal display |
| CN213814208U (en) * | 2020-08-27 | 2021-07-27 | 虹彩光电股份有限公司 | Self-generating cholesterol liquid crystal display |
-
2021
- 2021-04-26 CN CN202110453368.3A patent/CN115248518A/en active Pending
- 2021-05-13 TW TW110117341A patent/TWI779608B/en active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1602444A (en) * | 2001-12-11 | 2005-03-30 | 富士通株式会社 | Display and its driving method |
| TW200702776A (en) * | 2005-07-04 | 2007-01-16 | Fujitsu Ltd | Liquid crystal display device |
| CN104199225A (en) * | 2014-08-21 | 2014-12-10 | 京东方科技集团股份有限公司 | Display panel, manufacturing method of display panel and display device |
| CN105242473A (en) * | 2015-10-30 | 2016-01-13 | 南方科技大学 | Cholesteric liquid crystal display device and preparation method of reflecting layer in cholesteric liquid crystal display device |
| CN110515246A (en) * | 2019-09-29 | 2019-11-29 | 福建捷联电子有限公司 | A kind of colorful liquid crystal display of stack cobasis plate |
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| TWI779608B (en) | 2022-10-01 |
| TW202242500A (en) | 2022-11-01 |
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