CN108919529B - Cover plate and preparation method thereof, display panel and display device - Google Patents
Cover plate and preparation method thereof, display panel and display device Download PDFInfo
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- CN108919529B CN108919529B CN201810846940.0A CN201810846940A CN108919529B CN 108919529 B CN108919529 B CN 108919529B CN 201810846940 A CN201810846940 A CN 201810846940A CN 108919529 B CN108919529 B CN 108919529B
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- film layer
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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
- G02F1/132—Thermal activation of liquid crystals exhibiting a thermo-optic effect
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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
- G02F1/0147—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 thermo-optic effects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
Abstract
The invention relates to the technical field of display, and discloses a cover plate and a preparation method thereof, a display panel and a display device, wherein the cover plate comprises: the transparent substrate comprises a display area and a frame area arranged around the display area; and the liquid crystal film layer is positioned on the transparent substrate and arranged along the frame area, and the liquid crystal film layer comprises cholesteric liquid crystal. Above-mentioned apron when ambient temperature changes, the frame district of apron can take place the colour along with the temperature and change, not only has the effect of temperature monitoring and suggestion, can also form and dazzle beautiful outward appearance effect, has obvious competitive advantage.
Description
Technical Field
The invention relates to the technical field of display, in particular to a cover plate and a preparation method thereof, a display panel and a display device.
Background
At present, electronic products such as mobile phones and flat panels become necessities for life gradually, and the requirements of people on multifunction and diversification of the products are higher and higher. Therefore, the electronic product with the temperature monitoring function can obviously improve the user experience and is easier to obtain the personal belongings of people.
Disclosure of Invention
The invention discloses a cover plate and a preparation method thereof, a display panel and a display device, and aims to provide a mobile electronic product with a temperature monitoring function.
In order to achieve the purpose, the invention provides the following technical scheme:
a cover plate, comprising:
the transparent substrate comprises a display area and a frame area arranged around the display area;
and the liquid crystal film layer is positioned on the transparent substrate and arranged along the frame area, and the liquid crystal film layer comprises cholesteric liquid crystal.
The cover plate is provided with a liquid crystal film layer in the frame area of the transparent substrate, and the liquid crystal film layer comprises cholesteric liquid crystals. Cholesteric liquid crystal molecules are in a layered spiral structure, and the pitch of the cholesteric liquid crystal molecules can be changed along with temperature, so that selective reflection on wavelength is caused, and different colors can be displayed, namely the cholesteric liquid crystal has a thermochromatic effect, and the effect has reversibility; specifically, with the rise of temperature, the color of the cholesteric liquid crystal can be changed according to the sequence of red, orange, yellow, green, blue, indigo and purple, and the color can be changed according to the reverse sequence when the temperature is reduced, so that the sensitivity is high, and the chromatographic range is wide. Therefore, when the external temperature changes, the frame area of the cover plate can change in color along with the temperature, the temperature monitoring and prompting effects are achieved, the colorful appearance effect can be formed, and the obvious competitive advantage is achieved.
In an alternative embodiment, the liquid crystal film layer further comprises nematic liquid crystal.
In an alternative embodiment, the liquid crystal in the liquid crystal film layer is a microencapsulated structure.
In an optional embodiment, the cover plate further includes a magnetic material film layer on the transparent substrate.
In an optional embodiment, the magnetic material film layer is a transparent film layer, and the magnetic material film layer covers at least the frame region.
In an alternative embodiment, the magnetic material film layer is located on a side of the liquid crystal film layer facing away from the transparent substrate.
In an alternative embodiment, the magnetic material film layer is formed by mixing nanoscale magnetic metal particles and an insulating substance.
In an alternative embodiment, the magnetic material film layer is formed by mixing nano-scale iron-cobalt alloy particles and aluminum fluoride.
In an optional embodiment, the cover plate further comprises an ink layer and a coating layer on the side of the liquid crystal film layer away from the transparent substrate.
A display panel comprising the cover plate according to any of the above technical aspects.
A display device comprises the display panel in the technical scheme.
A method of making a cover plate comprising:
forming a liquid crystal film layer on a substrate, wherein the liquid crystal film layer is arranged along a frame area of the substrate and comprises cholesteric liquid crystals;
forming a magnetic material film layer on the liquid crystal film layer;
forming an ink layer on the magnetic material film layer, wherein the ink layer is arranged along the frame area of the substrate;
and forming a coating layer on the ink layer.
Drawings
Fig. 1 is a schematic diagram illustrating an exploded structure of a cover plate according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for manufacturing a cover plate according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a cover plate, including:
the display device comprises a transparent substrate 1, wherein the transparent substrate 1 comprises a display area A and a frame area B arranged around the display area A;
and the liquid crystal film layer 2 is positioned on the transparent substrate 1 and is arranged along the frame area B of the transparent substrate 1, and the liquid crystal film layer 2 comprises cholesteric liquid crystal.
The cover plate is provided with a liquid crystal film layer 2 in a frame area B of the transparent substrate 1, and the liquid crystal film layer 2 comprises cholesteric liquid crystal. Cholesteric liquid crystal molecules are in a layered spiral structure, and the pitch of the cholesteric liquid crystal molecules can be changed along with temperature, so that selective reflection on wavelength is caused, and different colors can be displayed, namely the cholesteric liquid crystal has a thermochromatic effect, and the effect has reversibility; specifically, with the rise of temperature, the color of the cholesteric liquid crystal can be changed according to the sequence of red, orange, yellow, green, blue, indigo and purple, and the color can be changed according to the reverse sequence when the temperature is reduced, so that the sensitivity is high, and the chromatographic range is wide. Therefore, when the external temperature changes, the frame area B of the cover plate can change in color along with the temperature, the temperature monitoring and prompting effects are achieved, the colorful appearance effect can be formed, and the obvious competitive advantage is achieved.
In a specific embodiment, as shown in fig. 1, in order to make the temperature range of the thermochromatic effect of the liquid crystal film layer 2 more match with the ambient temperature, make the color development more sensitive, or make the color more vivid, several cholesteric liquid crystals may be used to form the mixed type liquid crystal film layer 2 according to a certain composition.
The unique helical structure of cholesteric liquid crystal determines the special optical properties, such as selective reflection, circular dichroism and the like; when the wavelength (λ o) of the incident light matches the pitch (P) of the cholesteric liquid crystal, that is, λ o is n × P (n is the average refractive index of the cholesteric liquid crystal), the light is reflected, the reflected light is circularly polarized light, the rotation direction of the circularly polarized light matches the helical structure of the cholesteric liquid crystal, and the wavelength of the reflected light can be adjusted by changing the refractive index n and the pitch P of the cholesteric liquid crystal. Furthermore, the temperature range and the chromatographic range of the thermochromatic effect of the mixed liquid crystal layer prepared by mixing various cholesteric liquid crystals can be wider, the color development can be more sensitive, and the color can be more gorgeous.
In a particular embodiment, the liquid crystal film layer 2 further comprises nematic liquid crystals.
By adding nematic liquid crystal, the liquid crystal film layer 2 can be linearly changed in a chromatographic range, for example, a change area from red to green can be expanded by adding a small amount of nematic liquid crystal, so that a color change effect is improved, and observation of temperature change is facilitated.
In a specific embodiment, the liquid crystal in the liquid crystal film layer 2 is a microencapsulated structure. By microcapsule is meant a micro-container or package having a polymeric wall. Microencapsulation is the process of embedding and sealing liquid crystal in a microcapsule to form a solid particle product.
The microcapsule has the characteristics of thin wall, good color development and the like, the liquid crystal is easy to be polluted by ultraviolet light and environment, and the performance reliability of the microcapsule can be effectively improved by sealing the liquid crystal in the microcapsule, so that the service life of the cover plate is prolonged.
Alternatively, the diameter of the microcapsules may be 5 μm to 15 μm.
In a specific embodiment, as shown in fig. 1, the cover plate provided by the embodiment of the present invention may further include a film layer 3 of a magnetic material on the transparent substrate 1.
Magnetic material has the magnetocaloric effect, and when external no magnetic field acted on, the inside magnetic moment of magnetic material presented a disordered state, and magnetic material's whole magnetism entropy value is big, and when the external magnetic field appeared, magnetic material's magnetic moment can change under the effect of external magnetic field, becomes to be on a parallel with magnetic field, orderly state gradually, and the magnetism entropy value at this moment reduces, and this change process can be to releasing heat in the environment, and then leads to the ambient temperature to rise.
Specifically, the intensity of the external magnetic field can influence the change of the magnetic entropy value of the magnetic material film layer 3, so that the ambient temperature changes, and the liquid crystal film layer 2 can change color along with the temperature change, thereby playing a role in monitoring and prompting the ambient magnetic field. Since both the magnetocaloric effect of the magnetic material and the thermochromatic effect of the liquid crystal are reversible, the monitoring function can be cycled.
Optionally, the magnetic material film 3 may be a transparent film.
Further optionally, the magnetic material film layer 3 at least covers the frame region of the substrate 1, that is, may be only disposed along the frame region B of the substrate 1, or may be an entire layer structure covering the substrate 1.
Specifically, the magnetic material film layer 3 is located on one side of the liquid crystal film layer 2 departing from the transparent substrate 1.
In a specific embodiment, the magnetic material film 3 may be formed by mixing nano-scale magnetic metal particles and an insulating substance.
Optionally, the magnetic material film layer 3 is formed by mixing nano-scale iron-cobalt alloy particles and aluminum fluoride.
As shown in fig. 1, in a specific embodiment, the cover plate provided in the embodiment of the present invention further includes an ink layer 4 and a film coating layer 5 located on a side of the liquid crystal film layer 2 away from the transparent substrate 1.
Specifically, the ink layer 4 may be any color such as white, black, etc., and the ink layer 4 is disposed along the frame region B of the substrate 1; further, the coating layer 5 is a transparent film layer, and the coating layer 5 is an entire film layer covering the substrate 1.
Optionally, the magnetic material film layer 3 is located between the liquid crystal film layer 2 and the ink layer 4.
In addition, the embodiment of the invention also provides a display panel, which comprises the cover plate in any embodiment.
The embodiment of the invention also provides a display device which comprises the display panel.
Specifically, the display device can be a mobile electronic device carried about, such as a mobile phone and a tablet, and specifically, changes of ambient temperature and magnetic field can be judged directly by observing the appearance of a display cover plate of the electronic device, so that the function of health monitoring can be realized.
As shown in fig. 1 and fig. 2, based on the cover plate provided in the embodiment of the present invention, the embodiment of the present invention further provides a method for manufacturing the cover plate, where the method may include the following steps:
step S101, forming a liquid crystal film layer 2 on a substrate 1, wherein the liquid crystal film layer 2 is arranged along a frame area B of the substrate 1;
step S102, forming a magnetic material film layer 3 on the liquid crystal film layer 2;
step S103, forming an ink layer 4 on the magnetic material film layer 3, wherein the ink layer 4 is arranged along the frame area B of the substrate 1;
step S104, forming a coating layer 5 on the ink layer 4.
In a specific embodiment, the forming of the liquid crystal film layer 2 on the substrate 1 specifically includes the following steps: the cholesteric liquid crystal and the nematic liquid crystal are mixed according to a set proportion, the mixed liquid crystal is prepared into a microcapsule structure, the microcapsule structure is mixed with an adhesive, and then the adhesive is coated on the substrate 1.
Alternatively, the magnetic material film layer 3 may be formed by a screen printing technique. Specifically, the magnetic material film layer 3 may be a transparent film layer; further, the magnetic material film layer 3 may be a whole layer structure covering the substrate 1, or may be disposed only along the frame region B of the substrate 1.
Optionally, the ink layer 4 may be black, white or any other color, and may be formed by a screen printing technique specifically; the ink layer 4 is disposed along the frame region B of the substrate 1. Further, the coating layer 5 is a transparent film layer, and the coating layer 5 is an entire film layer covering the substrate 1.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (11)
1. A cover plate, comprising:
the transparent substrate comprises a display area and a frame area arranged around the display area;
the liquid crystal film layer is positioned on the transparent substrate and arranged along the frame area, the liquid crystal film layer comprises cholesteric liquid crystal, and the cholesteric liquid crystal is used for displaying different colors along with the change of external temperature;
and the magnetic entropy value of the magnetic material film layer can change along with the strength of an external magnetic field, so that the external temperature is changed.
2. The cover sheet of claim 1, wherein the liquid crystal film layer further comprises nematic liquid crystals.
3. The cover sheet according to claim 1, wherein the liquid crystal in the liquid crystal film layer is a micro-encapsulated structure.
4. The cover sheet according to claim 1, wherein the magnetic material film layer is a transparent film layer, and the magnetic material film layer covers at least the frame region.
5. The cover sheet according to claim 1, wherein the film layer of magnetic material is located on a side of the liquid crystal film layer facing away from the transparent substrate.
6. The cover sheet as claimed in claim 1, wherein the magnetic material film layer is formed by mixing nano-scale magnetic metal particles and an insulating substance.
7. The cover plate as claimed in claim 6, wherein the magnetic material film layer is formed by mixing nano-scale Fe-Co alloy particles and aluminum fluoride.
8. The cover sheet according to any one of claims 1 to 3, further comprising an ink layer and a coating layer on a side of the liquid crystal film layer facing away from the transparent substrate.
9. A display panel comprising the cover sheet according to any one of claims 1 to 8.
10. A display device characterized by comprising the display panel according to claim 9.
11. A method of making a cover plate, comprising:
forming a liquid crystal film layer on a substrate, wherein the liquid crystal film layer is arranged along a frame area of the substrate and comprises cholesteric liquid crystals, and the cholesteric liquid crystals are used for displaying different colors along with the change of external temperature;
forming a magnetic material film layer on the liquid crystal film layer, wherein the magnetic entropy value of the magnetic material film layer can change along with the strength of an external magnetic field, so that the external temperature is changed;
forming an ink layer on the magnetic material film layer, wherein the ink layer is arranged along the frame area of the substrate;
and forming a coating layer on the ink layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810846940.0A CN108919529B (en) | 2018-07-27 | 2018-07-27 | Cover plate and preparation method thereof, display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810846940.0A CN108919529B (en) | 2018-07-27 | 2018-07-27 | Cover plate and preparation method thereof, display panel and display device |
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| Publication Number | Publication Date |
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| CN108919529A CN108919529A (en) | 2018-11-30 |
| CN108919529B true CN108919529B (en) | 2022-01-11 |
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| CN201810846940.0A Active CN108919529B (en) | 2018-07-27 | 2018-07-27 | Cover plate and preparation method thereof, display panel and display device |
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| CN (1) | CN108919529B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114721166A (en) * | 2022-04-26 | 2022-07-08 | 东南大学 | Contact lens containing thermochromic cholesteric liquid crystal material and preparation method thereof |
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| CN1258985A (en) * | 1998-12-30 | 2000-07-05 | 诺基亚流动电话有限公司 | Electronic device, shell of electronic device and method for producing shell of electronic device |
| CN2766464Y (en) * | 2004-12-13 | 2006-03-22 | 乐金电子(中国)研究开发中心有限公司 | Mobile phone fixed color-changing panel |
| CN102109584A (en) * | 2010-12-15 | 2011-06-29 | 中国印刷科学技术研究所 | Reagent and method for measuring magnetic field intensity by using magneto discoloration |
| CN202918344U (en) * | 2012-06-20 | 2013-05-01 | 东莞劲胜精密组件股份有限公司 | Thermochromic mobile phone shell |
| CN105885722A (en) * | 2016-06-24 | 2016-08-24 | 京东方科技集团股份有限公司 | Frame sealant, preparation method thereof, display panel and display device |
| CN105957444A (en) * | 2016-06-15 | 2016-09-21 | 苏州众显电子科技有限公司 | Allochroic liquid crystal label |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204523A (en) * | 2016-03-18 | 2017-09-26 | 广州光宝移动电子部件有限公司 | Wireloop antenna and the mobile device with wireloop antenna |
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2018
- 2018-07-27 CN CN201810846940.0A patent/CN108919529B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1258985A (en) * | 1998-12-30 | 2000-07-05 | 诺基亚流动电话有限公司 | Electronic device, shell of electronic device and method for producing shell of electronic device |
| CN2766464Y (en) * | 2004-12-13 | 2006-03-22 | 乐金电子(中国)研究开发中心有限公司 | Mobile phone fixed color-changing panel |
| CN102109584A (en) * | 2010-12-15 | 2011-06-29 | 中国印刷科学技术研究所 | Reagent and method for measuring magnetic field intensity by using magneto discoloration |
| CN202918344U (en) * | 2012-06-20 | 2013-05-01 | 东莞劲胜精密组件股份有限公司 | Thermochromic mobile phone shell |
| CN105957444A (en) * | 2016-06-15 | 2016-09-21 | 苏州众显电子科技有限公司 | Allochroic liquid crystal label |
| CN105885722A (en) * | 2016-06-24 | 2016-08-24 | 京东方科技集团股份有限公司 | Frame sealant, preparation method thereof, display panel and display device |
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| CN108919529A (en) | 2018-11-30 |
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