CN114074535B - Sun shield - Google Patents
Sun shield Download PDFInfo
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- CN114074535B CN114074535B CN202010844737.7A CN202010844737A CN114074535B CN 114074535 B CN114074535 B CN 114074535B CN 202010844737 A CN202010844737 A CN 202010844737A CN 114074535 B CN114074535 B CN 114074535B
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- Prior art keywords
- liquid crystal
- layer
- light
- transparent conductive
- sun visor
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 128
- 230000000694 effects Effects 0.000 claims abstract description 38
- 238000002834 transmittance Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 239000000758 substrate Substances 0.000 claims description 12
- 238000002310 reflectometry Methods 0.000 abstract description 3
- 239000000975 dye Substances 0.000 description 22
- 239000000463 material Substances 0.000 description 14
- 210000002858 crystal cell Anatomy 0.000 description 12
- 230000005684 electric field Effects 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000010416 ion conductor Substances 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 3
- 229920000123 polythiophene Polymers 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001579 optical reflectometry Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000001000 anthraquinone dye Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J3/00—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles
- B60J3/02—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles adjustable in position
- B60J3/0204—Sun visors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J3/00—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles
- B60J3/02—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles adjustable in position
- B60J3/0286—Sunglare reduction by temporary translucent screens or foils removably attached to window
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Liquid Crystal (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention discloses a sun shield, comprising: a liquid crystal sun visor body and a light shielding structure; the liquid crystal sun visor body comprises a polarized light layer, a liquid crystal box and a reflection polarized light layer which are sequentially stacked, and the liquid crystal sun visor body has a light transmission state and a mirror effect state; the shading structure is used for enabling light from one side of the reflection polarizing layer to penetrate through the liquid crystal sun visor body when the liquid crystal sun visor body is in a light-transmitting state; when the liquid crystal sun shield body is in a mirror effect state, the shading structure is positioned on one side of the reflection polarizing layer facing the liquid crystal box and used for reducing light transmittance. According to the invention, the shading structure is added, so that when the light intensity of the sun shield at one side of the reflecting polarized layer is overlarge in the mirror surface effect state, the shading structure can be used for absorbing more transmitted light, thereby reducing the transmittance of the light at one side of the reflecting polarized layer, improving the reflectivity of the light at one side of the polarized layer, and enabling the mirror surface effect to be better than that of the prior art.
Description
Technical Field
The invention relates to the technical field of vehicle-mounted products, in particular to a sun shield.
Background
The liquid crystal sun shield is used as a motor vehicle windshield and is used as a sun shield and an in-vehicle cosmetic mirror. The structure of the conventional liquid crystal sun visor is shown in fig. 1, and the liquid crystal sun visor 1 includes a polarizing layer 11, a liquid crystal cell 12 and a reflective polarizing layer 13 which are sequentially laminated. The liquid crystal sun shield 1 has two working states of a light transmission state and a mirror effect state. When the liquid crystal sun visor 1 is in a light-transmitting state, the liquid crystal sun visor 1 has higher transmittance to light incident from one side of the reflective polarizing layer 13, and a user can see an object from one side of the liquid crystal sun visor polarizing layer 11; when the liquid crystal sun visor 1 is in the mirror-effect state, the liquid crystal sun visor 1 has low transmittance for light incident from the reflective polarizing layer 13 side, and the user mainly sees the mirror image of the polarizing layer 11 side from the liquid crystal sun visor polarizing layer 11 side, and hardly sees the image of the reflective polarizing layer 13 side. However, when the light intensity on the side of the reflective polarizing layer 13 is strong, the mirror effect of the liquid crystal sun visor 1 is poor, and the user experience effect is greatly affected.
Disclosure of Invention
The embodiment of the invention provides a sun shield, which is used for solving the problem that the mirror surface effect of the sun shield is poor when the light intensity of light rays is overlarge in the existing liquid crystal sun shield.
The sun shield provided by the embodiment of the invention comprises a liquid crystal sun shield body, wherein the liquid crystal sun shield body comprises a polarized light layer, a liquid crystal box and a reflection polarized light layer which are sequentially stacked, and the liquid crystal sun shield body has a light transmission state and a mirror effect state; the sun shield also comprises a shading structure;
the shading structure is used for enabling light from one side of the reflection polarizing layer to penetrate through the liquid crystal sun visor body when the liquid crystal sun visor body is in a light-transmitting state; when the liquid crystal sun shield body is in a mirror effect state, the shading structure is positioned on one side of the reflection polarizing layer facing the liquid crystal box and used for reducing the transmittance of light transmitted through the shading structure.
Optionally, the light shielding structure comprises a light shielding sheet and a mechanical control structure;
The mechanical control structure is used for controlling the shading sheet to be positioned at one side of the reflection polarizing layer, which is away from the liquid crystal box, when the liquid crystal sun shield body is in a mirror effect state; when the liquid crystal sun shield body is in a light-transmitting state, the shading sheet is controlled so that orthographic projection of the shading sheet on the liquid crystal sun shield is not overlapped with the liquid crystal sun shield.
Optionally, the light shielding structure is an electrochromic structure.
Optionally, the electrochromic structure includes a first transparent conductive layer, an electrochromic layer, an ion conductor layer, an ion storage layer, and a second transparent conductive layer that are sequentially stacked.
Optionally, the electrochromic structure includes a first transparent conductive layer, a first alignment layer, a dye liquid crystal layer, a second alignment layer, and a second transparent conductive layer that are sequentially stacked.
Optionally, the electrochromic structure is located on a side of the reflective polarizing layer facing away from the liquid crystal cell.
Optionally, the electrochromic structure is located on a side of the reflective polarizing layer facing the liquid crystal cell.
Optionally, the liquid crystal cell includes a first substrate, a third transparent conductive layer, a third alignment layer, a liquid crystal layer, a fourth alignment layer, a fourth transparent conductive layer, and a second substrate;
The third transparent conductive layer is multiplexed into the first transparent conductive layer; the third orientation layer is multiplexed into the first orientation layer; the fourth orientation layer is multiplexed into the second orientation layer; the fourth transparent conductive layer is multiplexed into the second transparent conductive layer; the liquid crystal layer is doped with dye molecules and multiplexed into the dye liquid crystal layer.
Optionally, the dye liquid crystal layer contains a negative dichroism dye. Optionally, the light shielding structure comprises a photochromic structure; the photochromic structure is positioned on one side of the reflective polarizing layer facing the liquid crystal box or on one side of the reflective polarizing layer facing away from the liquid crystal box.
The invention has the following beneficial effects:
According to the sun shield provided by the embodiment of the invention, the light shielding structure is added to the existing liquid crystal sun shield, so that when the sun shield is in a mirror effect state and the light intensity on the side of the reflective polarizing layer is overlarge, more light incident into the light shielding structure can be absorbed by the light shielding structure, the light transmittance on the side of the reflective polarizing layer is reduced, the light reflectivity on the side of the polarizing layer is improved, and the mirror effect is better than that of the liquid crystal sun shield in the prior art.
Drawings
FIG. 1 is a schematic view of a prior art liquid crystal sun visor;
FIG. 2 is a schematic diagram of a liquid crystal cell according to an embodiment of the present invention;
Fig. 3 is a schematic structural view of a sun visor according to an embodiment of the present invention;
fig. 4 is a second schematic structural view of a sun visor according to an embodiment of the present invention;
fig. 5 is a third schematic structural view of a sun visor according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of an electrochromic device according to an embodiment of the present invention;
FIG. 7 is a second schematic structural diagram of an electrochromic structure according to an embodiment of the present invention;
fig. 8 is a schematic structural view of a sun visor according to an embodiment of the present invention;
Fig. 9 is a schematic structural view of a sun visor according to an embodiment of the present invention;
fig. 10 is a schematic structural view of a sun visor according to an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a further description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a repetitive description thereof will be omitted. The words expressing the positions and directions described in the present invention are described by taking the drawings as an example, but can be changed according to the needs, and all the changes are included in the protection scope of the present invention. The drawings of the present invention are merely schematic representations of relative positional relationships and are not intended to represent true proportions.
It is noted that in the following description, specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than those herein described, and those skilled in the art may readily devise numerous other arrangements that do not depart from the spirit of the application. Therefore, the present application is not limited by the specific embodiments disclosed below. The description hereinafter sets forth a preferred embodiment for practicing the application, but is not intended to limit the scope of the application, as the description is given for the purpose of illustrating the general principles of the application. The scope of the application is defined by the appended claims.
The following describes a sun visor according to an embodiment of the present invention with reference to the accompanying drawings.
The embodiment of the invention provides a sun shield, which comprises a liquid crystal sun shield body and a shading structure. As shown in fig. 1, the liquid crystal sun visor 1 body includes a polarizing layer 11, a liquid crystal cell 12, and a reflective polarizing layer 13, which are laminated in this order. The liquid crystal sun shield body has a light transmission state and a mirror effect state. The shading structure is used for enabling light from one side of the reflection polarizing layer to penetrate through the liquid crystal sun visor body when the liquid crystal sun visor body is in a light-transmitting state; when the liquid crystal sun shield body is in a mirror effect state, the shading structure is positioned on one side of the reflection polarizing layer facing the liquid crystal box and used for reducing the transmittance of light transmitted through the shading structure.
The sun shield provided by the embodiment of the invention is equivalent to adding the light shielding structure on the basis of the existing liquid crystal sun shield, so that when the sun shield is in a mirror effect state and the light intensity on the side of the reflection polarizing layer is overlarge, the light shielding structure can be used for absorbing more light rays entering the light shielding structure, thereby reducing the transmittance of the light rays on the side of the reflection polarizing layer, improving the reflectivity of the light rays on the side of the polarizing layer and enabling the mirror effect to be better than that of the liquid crystal sun shield in the prior art.
Specifically, in the embodiment of the present invention, as shown in fig. 2, the liquid crystal cell 12 includes a first substrate 121, a first transparent conductive layer 122, a first alignment layer 123, a liquid crystal layer 124, a second alignment layer 125, a second transparent conductive layer 126, and a second substrate 127, which are sequentially stacked.
In the embodiment, the materials of the first substrate 121 and the second substrate 127 may be glass, which is not limited herein. In the embodiment, the material of the first transparent conductive layer 122 and the second transparent conductive layer 126 is generally a transparent conductive material such as indium tin oxide or polythiophene, which is not limited herein.
Optionally, the light shielding structure includes a light shielding sheet and a mechanical control structure. Fig. 3 illustrates an example in which the sun visor is in a mirror-effect state. The mechanical control structure (not shown in fig. 3) is used for controlling the light shielding sheet 2 to be positioned on the side of the reflection polarizing layer 13 away from the liquid crystal box 12 when the liquid crystal sun visor 1 body is in a mirror effect state; when the liquid crystal sun visor 1 body is in a light-transmitting state, the light shielding sheet 2 is controlled so that the orthographic projection of the light shielding sheet 2 on the liquid crystal sun visor 1 is not overlapped with the liquid crystal sun visor 1.
Specifically, the mechanical control structure may be a spindle mechanism. Fig. 4 illustrates an example in which the sun visor is in a light-transmitting state. The liquid crystal sun visor 1 body is connected with the light shielding sheet 2 through a rotating shaft mechanism A. When the liquid crystal sun visor 1 body is in a light-transmitting state, the light shielding sheet 2 rotates to a position where the orthographic projection of the light shielding sheet on the liquid crystal sun visor 1 is not overlapped with the liquid crystal sun visor 2; when the body of the liquid crystal sun visor 1 is in a mirror effect state, the light shielding sheet 2 rotates to a position overlapping with the reflective polarizing layer.
In particular, the mechanical control structure may be a slide rail mechanism. Fig. 5 illustrates an example in which the sun visor is in a light-transmitting state. The liquid crystal sun visor 1 body is connected with the shading sheet 2 through a sliding rail mechanism B. When the liquid crystal sun visor 1 body is in a light-transmitting state, the light shielding sheet 2 slides to a position where the orthographic projection of the liquid crystal sun visor 1 is not overlapped with the liquid crystal sun visor 1; when the body of the liquid crystal sun visor 1 is in a mirror effect state, the light shielding sheet 2 slides to a position overlapping with the reflective polarizing layer.
In specific implementation, other mechanical structures may be used to control the position of the light shielding sheet, which is not limited herein.
In the specific implementation, the movement of the mechanical structure of the above two embodiments may be automatically controlled by a driving motor or the like, or a scheme in which a user manually controls the movement of the mechanical structure may be adopted, which is not limited herein.
Like this, through having increased the anti-dazzling screen to current liquid crystal sunshading board, make the sunshading board is in mirror surface effect state and when the light intensity of reflection polarizing layer one side is too big, can utilize the shading structure to absorb more incidence the light of shading structure to reduce the transmissivity of the light of reflection polarizing layer one side, improve the reflectivity of the light of polarizing layer one side, make the mirror surface effect compare in prior art's liquid crystal sunshading board better.
Optionally, the light shielding structure is an electrochromic structure.
Specifically, when a voltage is applied to the electrochromic structure, the color of the electrochromic structure may become dark; when the voltage is removed from the electrochromic structure, the color of the electrochromic structure becomes transparent.
Like this, through having increased electrochromic structure to current liquid crystal sun visor board, make the sun visor board is in mirror surface effect state and when the light intensity of reflection polarizing layer one side is too big, apply the voltage to electrochromic structure, make it become dark, then can absorb more incidence electrochromic structure's light to make mirror surface effect compare in prior art's liquid crystal sun visor board better.
Alternatively, as shown in fig. 6, the electrochromic structure 3 includes a first transparent conductive layer 311, an electrochromic layer 312, an ion conductor layer 313, an ion storage layer 314, and a second transparent conductive layer 315, which are sequentially stacked.
Wherein the electrochromic structure 3 further comprises an electrochromic control circuit (not shown in fig. 6). The electrochromic control circuit is connected to the first transparent conductive layer 311 and the second transparent conductive layer 315. When the electrochromic control circuit applies voltage to the first transparent conductive layer 311 and the second transparent conductive layer 315, the electrochromic structure 3 forms an electric field, and the electrochromic layer 312 generates electrochemical oxidation-reduction reaction under the action of the electric field to change the color into dark color; when the electrochromic control circuit removes the voltage to the first transparent conductive layer 311 and the second transparent conductive layer 315, the electric field disappears, and the electrochromic layer 312 reacts in reverse of the foregoing reaction, so that the color becomes transparent. The ion conductor layer 313 provides or transports ions when the electrochromic layer 312 is colored/faded. The ion storage layer 314 has a function of balancing charge transport in the electrochromic structure 3.
In the embodiment, the material of the first transparent conductive layer 311 and the second transparent conductive layer 315 is generally a material such as indium tin oxide or polythiophene, which is not limited herein. The electrochromic layer 312 may be IrO X or other electrochromic materials, which is not limited herein. The material of the ion conductor layer 313 may be, but not limited to, electrodeless solid lithium salt. The material of the ion storage layer 314 may be WO 3, etc., and is not limited herein.
Like this, through having increased electrochromic structure to current liquid crystal sun visor board, make the sun visor board is in mirror surface effect state and when the light intensity of reflection polarizing layer one side is too big, apply the voltage to electrochromic structure, make it become dark, then can absorb more incidence electrochromic structure's light to make mirror surface effect compare in prior art's liquid crystal sun visor board better.
Or alternatively, as shown in fig. 7, the electrochromic structure 3 includes a first transparent conductive layer 321, a first alignment layer 322, a dye liquid crystal layer 323, a second alignment layer 324, and a second transparent conductive layer 325, which are sequentially stacked.
Wherein the electrochromic structure 3 further comprises an electrochromic control circuit (not shown in fig. 7). The electrochromic control circuit is connected to the first transparent conductive layer 321 and the second transparent conductive layer 325. When the electrochromic control circuit applies voltage to the first transparent conductive layer 321 and the second transparent conductive layer 325, the electrochromic structure 3 forms an electric field, and the liquid crystal molecules in the dye liquid crystal layer 323 rotate under the action of the electric field, so that the liquid crystal molecules drive the dye molecules in the dye liquid crystal layer 323 to rotate to a direction parallel to the polarization direction of the incident electrochromic structure 3, the dye molecules absorb the incident light, and the light transmittance is reduced; when the electrochromic control circuit removes the voltage from the first transparent conductive layer 321 and the second transparent conductive layer 325, the electric field disappears, the liquid crystal molecules in the dye liquid crystal layer 323 rotate, and the liquid crystal molecules drive the dye molecules in the dye liquid crystal layer 323 to rotate to a direction perpendicular to the polarization direction of the incident electrochromic structure 3, so that the dye molecules do not absorb the incident light, and the light is not affected basically through the electrochromic structure 3.
In specific implementation, the materials of the first alignment layer 322 and the second alignment layer 324 may be polyimide, which is not limited herein.
Therefore, by adding the electrochromic structure to the existing liquid crystal sun shield, when the sun shield is in a mirror effect state and the light intensity on one side of the reflective polarizing layer is overlarge, voltage is applied to the electrochromic structure to change the arrangement direction of dye molecules to make the dye molecules become dark, more light incident into the electrochromic structure can be absorbed, and therefore the mirror effect is better than that of the liquid crystal sun shield in the prior art.
Alternatively, as shown in fig. 8, the electrochromic structure 3 is located on the side of the reflective polarizing layer 13 facing away from the liquid crystal cell 12.
Therefore, the structure of the liquid crystal sun visor body is not changed, the production process of the liquid crystal sun visor body is not changed, and the production cost is reduced.
Alternatively, as shown in fig. 9, the electrochromic structure 3 is located on the side of the reflective polarizing layer 13 facing the liquid crystal cell 12.
Thus, by positioning the electrochromic structure 3 on the side of the reflective polarizing layer 13 facing the liquid crystal cell 12, the integrity of the sun visor structure is enhanced.
Optionally, in the sun visor provided by the embodiment of the present invention, the sun visor includes the liquid crystal sun visor body and the electrochromic structure. The electrochromic structure is shown in fig. 7, and has been described above, so that the description thereof will not be repeated. The whole sun visor is shown in fig. 10. Wherein the sun visor body comprises a polarizing layer 11, a liquid crystal cell and a reflective polarizing layer 13. Wherein the liquid crystal cell includes a first substrate 121, a third transparent conductive layer, a third alignment layer, a liquid crystal layer, a fourth alignment layer, a fourth transparent conductive layer, and a second substrate 127.
Because the partial structure of the liquid crystal box is the same as the partial structure of the electrochromic structure in function, the corresponding same parts in the two structures can be combined and multiplexed. Then the third transparent conductive layer is multiplexed as the first transparent conductive layer 321, the third orientation layer is multiplexed as the first orientation layer 322, the fourth orientation layer is multiplexed as the second orientation layer 324, and the fourth transparent conductive layer is multiplexed as the second transparent conductive layer 325. The liquid crystal layer is doped with dye molecules. The liquid crystal layer is multiplexed into the dye liquid crystal layer 323.
Wherein, the materials of the first substrate 121 and the second substrate 127 are glass.
In particular, the material of the first transparent conductive layer 321 and the second transparent conductive layer 325 is generally a material such as indium tin oxide or polythiophene, which is not limited herein. In specific implementation, the materials of the first alignment layer 322 and the second alignment layer 325 may be polyimide, which is not limited herein.
Therefore, the liquid crystal box and the electrochromic structure are combined and reused, so that the thickness of the original liquid crystal sun shield is not increased under the condition that the original structure of the liquid crystal sun shield body is not changed basically, the light absorption capacity of the mirror effect state to the liquid crystal sun shield entering from one side of the reflection polarizing layer is enhanced, and the display effect of the mirror effect is improved.
Optionally, the dye liquid crystal layer contains a negative dichroism dye.
In specific embodiments, the negative dichroic dye may be an anthraquinone dye, or may be another type of negative dichroic dye, which is not limited herein.
Optionally, the light shielding structure comprises a photochromic structure; the photochromic structure is positioned on one side of the reflective polarizing layer facing the liquid crystal box or on one side of the reflective polarizing layer facing away from the liquid crystal box.
Thus, when light passes through the photochromic structure, if the light intensity is larger than a specific value, the light can cause the photochromic material in the structure to undergo chemical reaction so as to change the color into dark color, thereby enhancing the light absorption capacity of the photochromic structure and improving the display effect of the sunshading board in a mirror surface effect and the sunshading effect in a light transmission state; if the light intensity is smaller than a specific value, the photochromic material can undergo the reverse reaction of the chemical reaction, so that the color becomes transparent, and the light transmission is not affected.
According to the sun shield provided by the embodiment of the invention, the light shielding structure is added to the existing liquid crystal sun shield, so that when the sun shield is in a mirror effect state and the light intensity on the side of the reflective polarizing layer is overlarge, more light incident into the light shielding structure can be absorbed by the light shielding structure, the light transmittance on the side of the reflective polarizing layer is reduced, the light reflectivity on the side of the polarizing layer is improved, and the mirror effect is better than that of the liquid crystal sun shield in the prior art.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (2)
1. The sun shield comprises a liquid crystal sun shield body, wherein the liquid crystal sun shield body comprises a polarized light layer, a liquid crystal box and a reflection polarized light layer which are sequentially stacked, and the liquid crystal sun shield body has a light transmission state and a mirror effect state; the liquid crystal box comprises a first substrate, a third transparent conductive layer, a third orientation layer, a liquid crystal layer, a fourth orientation layer, a fourth transparent conductive layer and a second substrate;
the sun shield is characterized by further comprising a shading structure;
The shading structure is used for enabling light from one side of the reflection polarizing layer to penetrate through the liquid crystal sun visor body when the liquid crystal sun visor body is in a light-transmitting state; when the liquid crystal sun shield body is in a mirror effect state, the shading structure is positioned on one side of the reflection polarizing layer facing the liquid crystal box and used for reducing the transmittance of light transmitted through the shading structure;
Wherein the light shielding structure comprises an electrochromic structure;
The electrochromic structure comprises a first transparent conductive layer, a first orientation layer, a dye liquid crystal layer, a second orientation layer and a second transparent conductive layer which are sequentially laminated; the third transparent conductive layer is multiplexed into the first transparent conductive layer; the third orientation layer is multiplexed into the first orientation layer; the fourth orientation layer is multiplexed into the second orientation layer; the fourth transparent conductive layer is multiplexed into the second transparent conductive layer; the liquid crystal layer is doped with dye molecules and multiplexed into the dye liquid crystal layer.
2. The sun visor of claim 1 wherein the dye liquid crystal layer comprises a negative dichroic dye.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010844737.7A CN114074535B (en) | 2020-08-20 | 2020-08-20 | Sun shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010844737.7A CN114074535B (en) | 2020-08-20 | 2020-08-20 | Sun shield |
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| Publication Number | Publication Date |
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| CN114074535A CN114074535A (en) | 2022-02-22 |
| CN114074535B true CN114074535B (en) | 2024-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010844737.7A Active CN114074535B (en) | 2020-08-20 | 2020-08-20 | Sun shield |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20240227515A9 (en) * | 2022-10-25 | 2024-07-11 | Gentex Corporation | Switchable vanity mirror in electrochromic sun visor |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1751334A (en) * | 2003-02-12 | 2006-03-22 | 金泰克斯公司 | Vehicle information displays |
| EP1892133A2 (en) * | 2006-08-23 | 2008-02-27 | BOS GmbH & Co. KG | Read window roller blind with rounded support rail |
| CN103529615A (en) * | 2013-11-06 | 2014-01-22 | 京东方科技集团股份有限公司 | Display panel, manufacture method thereof, display device |
| CN106739995A (en) * | 2017-02-14 | 2017-05-31 | 京东方科技集团股份有限公司 | Sunshading board |
| CN107323230A (en) * | 2017-06-12 | 2017-11-07 | 北京汽车研究总院有限公司 | A kind of car visor component and the vehicle with it |
| CN109878304A (en) * | 2019-03-29 | 2019-06-14 | 合肥京东方光电科技有限公司 | Sunshading board, sunshading board control method and automobile |
| DE102017223499A1 (en) * | 2017-12-21 | 2019-06-27 | Continental Automotive Gmbh | Disc system with a variable transparency disc and a control device, and use of such a disc system in a vehicle |
| CN110133897A (en) * | 2019-05-17 | 2019-08-16 | 深圳市华星光电半导体显示技术有限公司 | Transparent display |
| CN110208981A (en) * | 2019-06-28 | 2019-09-06 | 亚世光电股份有限公司 | A kind of novel liquid crystal dimming sunshade plate rearview mirror |
| CN110494312A (en) * | 2017-04-14 | 2019-11-22 | 堺显示器制品株式会社 | Solar protection devices |
-
2020
- 2020-08-20 CN CN202010844737.7A patent/CN114074535B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1751334A (en) * | 2003-02-12 | 2006-03-22 | 金泰克斯公司 | Vehicle information displays |
| EP1892133A2 (en) * | 2006-08-23 | 2008-02-27 | BOS GmbH & Co. KG | Read window roller blind with rounded support rail |
| CN103529615A (en) * | 2013-11-06 | 2014-01-22 | 京东方科技集团股份有限公司 | Display panel, manufacture method thereof, display device |
| CN106739995A (en) * | 2017-02-14 | 2017-05-31 | 京东方科技集团股份有限公司 | Sunshading board |
| CN110494312A (en) * | 2017-04-14 | 2019-11-22 | 堺显示器制品株式会社 | Solar protection devices |
| CN107323230A (en) * | 2017-06-12 | 2017-11-07 | 北京汽车研究总院有限公司 | A kind of car visor component and the vehicle with it |
| DE102017223499A1 (en) * | 2017-12-21 | 2019-06-27 | Continental Automotive Gmbh | Disc system with a variable transparency disc and a control device, and use of such a disc system in a vehicle |
| CN109878304A (en) * | 2019-03-29 | 2019-06-14 | 合肥京东方光电科技有限公司 | Sunshading board, sunshading board control method and automobile |
| CN110133897A (en) * | 2019-05-17 | 2019-08-16 | 深圳市华星光电半导体显示技术有限公司 | Transparent display |
| CN110208981A (en) * | 2019-06-28 | 2019-09-06 | 亚世光电股份有限公司 | A kind of novel liquid crystal dimming sunshade plate rearview mirror |
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