CN107703661B - Transparent display device and manufacturing method thereof - Google Patents
Transparent display device and manufacturing method thereof Download PDFInfo
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- CN107703661B CN107703661B CN201710848976.8A CN201710848976A CN107703661B CN 107703661 B CN107703661 B CN 107703661B CN 201710848976 A CN201710848976 A CN 201710848976A CN 107703661 B CN107703661 B CN 107703661B
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- reactive dye
- dye molecules
- liquid crystal
- alignment film
- molecules
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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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
- C09K19/60—Pleochroic dyes
Abstract
The invention discloses a transparent display device and a manufacturing method thereof, wherein the transparent display device comprises a color film substrate, an array substrate and a liquid crystal layer positioned between the color film substrate and the array substrate, an alignment film is arranged between the liquid crystal layer and the color film substrate or between the liquid crystal layer and the array substrate, R, G, B sub-pixel areas are arranged on the color film substrate, Thin Film Transistors (TFT) distributed in an array mode are arranged on the array substrate, a reactive dye molecule with an alignment function is added into the liquid crystal molecule, and the reactive dye molecule is fixed on the lower surface of a first alignment film and the upper surface of a second alignment film after being irradiated by ultraviolet light and has an absorption effect on light. The transparent display device has good display effect.
Description
Technical Field
The invention belongs to the technical field of liquid crystal display panels, and particularly relates to a transparent display device.
Technical Field
With the development of information society, the current mainstream display devices cannot meet the requirements of people, and transparent displays gradually enter the visual field of people.
The transparent display can enable a user to clearly see the background behind the display when watching the display, provides a new feeling for consumers, can be applied to windows, automobile windows, windshields, commercial advertisement display and the like, and has wider and wider application range. For a display device in which dye molecules are added to liquid crystal, the light absorption rate of the device is low, and the dye molecules on the surface of the alignment film do not substantially contribute to the adjustment of light, thereby further reducing the light absorption rate and reducing the contrast. If the dye molecules are mixed with the alignment liquid, the efficiency of ultraviolet light is greatly reduced due to the light absorption effect of the dye molecules during ultraviolet light irradiation, and alignment unevenness is possibly caused, so that various display defects are generated; in addition, this method often uses a polarizer, which is expensive and has low transmittance, and is not suitable for transparent display.
Disclosure of Invention
In view of the above, it is an object of the present invention to provide a transparent display device having high contrast and power saving.
The present invention achieves the above object by the following technical means.
The transparent display device comprises a color film substrate, an array substrate and a liquid crystal layer positioned between the color film substrate and the array substrate.
The color film substrate comprises a first glass substrate, a color layer, a common electrode and a first alignment film, wherein the color layer is positioned between black matrixes on the first glass substrate, the common electrode covers the black matrixes and the color layer, and the first alignment film is arranged between the black matrixes and the color layer.
The array substrate comprises a second glass substrate, scanning lines and data lines which are arranged on the second glass substrate and are crisscrossed, a pixel area defined by the scanning lines and the data lines in a staggered mode, TFTs (thin film transistors) arranged at the intersections of the scanning lines and the data lines, pixel electrodes arranged in the pixel area, and a second alignment film.
A first alignment film is arranged between the liquid crystal layer and the common electrode, and a second alignment film is arranged between the liquid crystal layer and the pixel electrode; the liquid crystal layer comprises reactive dye molecules and liquid crystal molecules, wherein the reactive dye molecules comprise first reactive dye molecules positioned on the lower surface of the first alignment film and second reactive dye molecules positioned on the upper surface of the second alignment film, the reactive dye molecules have an alignment function, are fixed on the lower surface of the first alignment film and the upper surface of the second alignment film after being irradiated by ultraviolet light, have an absorption effect on the light, and have a light regulation effect.
By adding a reactive dye molecule with an alignment function in the liquid crystal molecules, the dye liquid crystal molecules in the transparent display device are arranged on the lower surface of the first alignment film and the upper surface of the second alignment film, so that the absorption degree of light is enhanced, and the contrast of the display device is greatly improved.
Drawings
The invention is further described below with reference to the figures and examples.
FIG. 1 is a schematic structural diagram of a transparent display device in an off state according to the present invention;
FIG. 2 is a schematic structural diagram of the transparent display device in an on state according to the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled.
In the present embodiment, the liquid crystal used in the transparent display device is a twisted nematic liquid crystal.
As shown in fig. 1, the transparent display device of the present invention includes a color filter substrate 10 and an array substrate 11, which are disposed opposite to each other, and a liquid crystal layer disposed between the color filter substrate 10 and the array substrate 11.
The color filter substrate 10 includes: a first glass substrate, black matrices (not shown) on the first glass substrate, a color layer (not shown) between the black matrices, a common electrode 12 covering the black matrices and the color layer, and a first alignment film 14.
The array substrate 11 includes: a second glass substrate, scan lines and data lines on the second glass substrate and crisscrossed, a pixel region defined by the scanning lines and the data lines being crossed, TFTs at intersections of the scanning lines and the data lines, pixel electrodes 13 in the pixel region, and a second alignment film 15.
A first alignment film 14 is arranged between the liquid crystal layer and the common electrode 12, and a second alignment film 15 is arranged between the liquid crystal layer and the pixel electrode 13; the liquid crystal layer comprises reactive dye molecules and liquid crystal molecules 18, the reactive dye molecules comprise first reactive dye molecules 16 positioned on the lower surface of the first alignment film and second reactive dye molecules 17 positioned on the upper surface of the second alignment film, and the liquid crystal molecules 18 are positioned between the first reactive dye molecules 16 and the second reactive dye molecules 17; the reactive dye molecules have an alignment function, are fixed on the lower surface of the first alignment film 14 and the upper surface of the second alignment film 15 after being irradiated by ultraviolet light, have an absorption effect on light, and the liquid crystal molecules 18 play a role in adjusting the light.
The manufacturing method of the transparent display device in this embodiment is as follows:
s1, adding the reactive dye molecules into the liquid crystal molecules 18, and dropping the reactive dye molecules and the liquid crystal molecules 18 onto the array substrate 11;
s2, adhering the color film substrate 10 and the array substrate 11 in a vacuum adhering mode on the basis of finishing the step S1;
s3, curing the frame glue on the basis of completing the S2;
s4, on the basis of completing S3, the liquid crystal layer is irradiated with ultraviolet light to fix the reactive dye molecules 16 to the lower surface of the first alignment film 14 and the upper surface of the second alignment film 15.
Wherein, a left-handed or right-handed chiral agent is added into the liquid crystal molecules 18 in the S1.
In S4, the long axis direction of the first reactive dye molecules 16 on the lower surface of the first alignment film 14 is consistent with the alignment direction of the first alignment film 14, the long axis direction of the second reactive dye molecules 17 on the upper surface of the second alignment film 15 is consistent with the alignment direction of the second alignment film 15, and the alignment direction of the first reactive dye molecules 16 and the alignment direction of the second reactive dye molecules 17 are perpendicular to each other.
Fig. 1 shows a schematic structural diagram of the non-operating transparent display device of the present invention, in which a portion of light parallel to the second reactive dye molecules 17 on the upper surface of the second alignment film 15 is absorbed, passes through the liquid crystal molecules 18 vertically, the light vibration direction is twisted by 90 degrees, and the light passes through the first reactive dye molecules 16 on the lower surface of the first alignment film 14 without being absorbed, and is in a bright state. Fig. 2 shows a schematic structural diagram of the transparent display device during operation, in which the liquid crystal molecules 18 on the upper surface of the second alignment film 15 rotate, light passes through the liquid crystal molecule layer 18 directly after passing through the second alignment film layer 15, and is absorbed and appears in a dark state when passing through the first reactive dye molecules 17 on the lower surface of the first alignment film 14.
By adopting the transparent display screen, the dye liquid crystal molecules are arranged on the lower surface of the first alignment film and the upper surface of the second alignment film, so that the light absorption degree can be enhanced, and the contrast of the display device is greatly improved.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the details of the embodiments, and various equivalent modifications can be made within the technical spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention.
Claims (7)
1. A method for manufacturing a transparent display device, comprising:
s1, adding reactive dye molecules into the liquid crystal molecules, and dripping the reactive dye molecules and the liquid crystal molecules onto the array substrate;
s2, adhering the color film substrate and the array substrate in a vacuum adhering mode on the basis of finishing the step S1;
s3, curing the frame glue on the basis of completing the S2;
s4, on the basis of S3, the liquid crystal layer is irradiated with ultraviolet light to fix the reactive dye molecules to the surface of the alignment film.
2. The method of claim 1, wherein: and a left-handed or right-handed chiral agent is added into the liquid crystal molecules in the S1.
3. The method of claim 1, wherein: the lower surface of the color film substrate is provided with a first alignment film, the upper surface of the array substrate is provided with a second alignment film, the reactive dye molecules comprise first reactive dye molecules positioned on the lower surface of the first alignment film and second reactive dye molecules positioned on the upper surface of the second alignment film, and the liquid crystal molecules are positioned between the first reactive dye molecules and the second reactive dye molecules.
4. A transparent display device manufactured by the method of any one of claims 1 to 3, comprising a color film substrate and an array substrate which are arranged opposite to each other, and a liquid crystal layer between the color film substrate and the array substrate;
the color film substrate comprises a common electrode and a first alignment film;
the array substrate comprises a pixel electrode and a second alignment film;
the liquid crystal layer comprises reactive dye molecules and liquid crystal molecules with alignment functions, and the reactive dye molecules are fixed on the lower surface of the first alignment film and the upper surface of the second alignment film after being irradiated by ultraviolet light;
an electric field is formed between the common electrode and the pixel electrode and drives liquid crystal molecules to be arranged in a twisted mode;
the reactive dye molecules comprise first reactive dye molecules positioned on the lower surface of the first alignment film and second reactive dye molecules positioned on the upper surface of the second alignment film, and the liquid crystal molecules are positioned between the first reactive dye molecules and the second reactive dye molecules.
5. The transparent display device of claim 4, wherein: the long axis direction of the first reactive dye molecules is consistent with the alignment direction of the first alignment film, and the long axis direction of the second reactive dye molecules is consistent with the alignment direction of the second alignment film.
6. The transparent display device of claim 5, wherein: the alignment direction of the first reactive dye molecules and the alignment direction of the second reactive dye molecules are perpendicular to each other.
7. The transparent display device of claim 4, wherein: the array substrate comprises scanning lines and data lines which are crisscrossed, a pixel area defined by the scanning lines and the data lines in a staggered mode, and TFTs (thin film transistors) located at the staggered positions of the scanning lines and the data lines, wherein pixel electrodes are located in the pixel area.
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| CN201710848976.8A CN107703661B (en) | 2017-09-20 | 2017-09-20 | Transparent display device and manufacturing method thereof |
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| CN201710848976.8A CN107703661B (en) | 2017-09-20 | 2017-09-20 | Transparent display device and manufacturing method thereof |
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| CN107703661B true CN107703661B (en) | 2021-05-11 |
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| CN111983847A (en) * | 2020-08-20 | 2020-11-24 | 武汉华星光电技术有限公司 | Color filter substrate, manufacturing method thereof and liquid crystal display panel |
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| NL8901167A (en) * | 1989-05-10 | 1990-12-03 | Philips Nv | METHOD FOR MANUFACTURING A POLARIZATION FILTER, A POLARIZATION FILTER SO OBTAINED AND A DISPLAY EQUIPPED WITH THE POLARIZATION FILTER. |
| GB9609439D0 (en) * | 1996-05-04 | 1996-07-10 | Zeneca Ltd | Polymerisable composition |
| US6124907A (en) * | 1998-04-24 | 2000-09-26 | Ois Optical Imaging Systems, Inc. | Liquid crystal display with internal polarizer and method of making same |
| GB9812636D0 (en) * | 1998-06-11 | 1998-08-12 | Rolic Ag | Optical component orientation layer and layerable polymerisable mixture |
| KR20020023173A (en) * | 2001-12-05 | 2002-03-28 | 서대식 | LCD device of advanced VA- π cell using blending polyimide |
| CN1655029A (en) * | 2004-02-14 | 2005-08-17 | 鸿富锦精密工业（深圳）有限公司 | Liquid crystal display device |
| CN101016420A (en) * | 2006-02-10 | 2007-08-15 | 明德国际仓储贸易(上海)有限公司 | Azo dyes compounds and polarizing film thereof |
| WO2008007715A1 (en) * | 2006-07-14 | 2008-01-17 | Asahi Glass Company, Limited | Liquid crystal optical device and process for manufacturing the same |
| EP2077463A1 (en) * | 2007-12-27 | 2009-07-08 | TPO Displays Corp. | LCD with improved contrast ratio and apparatus comprising such a LCD |
| JP5300776B2 (en) * | 2010-03-31 | 2013-09-25 | 富士フイルム株式会社 | Polarizing film, display device, and manufacturing method thereof |
| KR101198185B1 (en) * | 2010-07-27 | 2012-11-12 | 전북대학교산학협력단 | Liquid Crystal Display and method for making thereof |
| CN102654671B (en) * | 2011-11-14 | 2014-09-10 | 京东方科技集团股份有限公司 | Liquid crystal display and manufacturing method thereof |
| CN104737068B (en) * | 2012-10-19 | 2018-04-27 | 默克专利有限公司 | The manufacture method of liquid crystal display device and liquid crystal display device |
| CN103728758A (en) * | 2013-11-28 | 2014-04-16 | 深圳市华星光电技术有限公司 | Color liquid crystal display panel and manufacturing method thereof |
| CN104375328A (en) * | 2014-11-28 | 2015-02-25 | 深圳市华星光电技术有限公司 | Display panel and manufacturing method of display panel |
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Effective date of registration: 20200907 Address after: No.7 Tianyou Road, Qixia District, Nanjing City, Jiangsu Province Applicant after: NANJING CEC PANDA FPD TECHNOLOGY Co.,Ltd. Address before: Nanjing Crystal Valley Road in Qixia District of Nanjing City Tianyou 210033 Jiangsu province No. 7 Applicant before: NANJING CEC PANDA FPD TECHNOLOGY Co.,Ltd. Applicant before: NANJING CEC PANDA LCD TECHNOLOGY Co.,Ltd. Applicant before: Nanjing East China Electronic Information Technology Co.,Ltd. |
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