High-permeability streaming media rearview mirror

Abstract

The utility model discloses a rearview mirror with high permeable media, which comprises an EC lens, the EC lens comprises a first glass substrate and a second glass substrate, a gap is arranged between the first glass substrate and the second glass substrate, and the gap is filled with electrochromic liquid; the optical assembly and the EC lens are arranged adjacently, and the optical assembly is arranged on the side, away from the first glass substrate, of the second glass substrate. Wherein reflection type polaroids are arranged between the EC lens and the optical assembly, and at least one layer of reflection type polaroid is attached to the surface of the side, away from the first glass substrate, of the second glass substrate. By arranging the reflective polaroid, when the rearview mirror is in a non-streaming media mode, the EC lens has high reflectivity and can play a role of a physical reflector; when the rearview mirror is in a streaming media mode, the reflective polaroid has a high-transmittance effect on polarized light emitted by the optical assembly, so that a rear driving image is presented in a video picture mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle rear -view mirror technical field especially, it is a streaming media rear -view mirror with high permeability. BACKGROUND

[0002] In the field of vehicle rear -view mirror, common streaming media rear -view mirror includes LC mirror and EC mirror, and the difference of the two mainly reflects in material characteristics and working mechanism, LC mirror works based on the electro -optical effect and polarized light effect of liquid crystal material, and EC mirror works based on electrochromic phenomenon (i.e. the optical property of material). The traditional EC mirror scheme generally adopts the following scheme: including two glass structures, plating a half -reflective silver layer (or reflective film) on one of the inner surfaces between the two glass structures, thereby realizing physical mirror reflection in non-streaming media mode.

[0003] Due to the above structure and characteristics of EC mirror, the reflectivity of the EC mirror in the current industry can be relatively high (common reflectivity can reach 40~70%). But the rear -view mirror in streaming media mode also needs to consider the transmittance of EC mirror. The transmittance and reflectivity of the half -reflective film in the traditional EC mirror scheme follow the principle that transmittance + reflectivity + electrochromic liquid layer light loss (about 10%~20%) =100%, so under the condition of meeting the reflectivity of at least 40% specified by laws and regulations, its transmittance is only about 35~45%. Under such transmittance, to meet the brightness requirement, the streaming media rear -view mirror of the traditional EC mirror scheme requires very high brightness of display screen module, and high-brightness display screen module will inevitably increase power consumption, resulting in problems such as high surface temperature and rapid temperature rise of streaming media rear -view mirror, which may even affect the normal work of circuit board, controller and other components. In the traditional LC mirror scheme, there is a scheme to improve the transmittance of rear -view mirror by designing polaroid or similar structure, but such scheme design has not been found to be applied to EC mirror scheme.

[0004] Therefore, there is an urgent need in the prior art to invent a streaming media rear -view mirror that can achieve high transmittance while considering low power consumption. UTILITY MODEL CONTENT

[0005] In order to overcome the technical problems that the streaming media rear -view mirror in the prior art cannot consider high transmittance and low power consumption when using EC mirror scheme, the utility model provides a high-transmittance streaming media rear -view mirror.

[0006] The technical scheme adopted by the utility model to solve the problem is:

[0007] A high-transmittance streaming media rear -view mirror, comprising:

[0008] An EC lens comprises a first glass substrate and a second glass substrate, a gap is arranged between the first glass substrate and the second glass substrate, and the gap is filled with an electrochromic liquid;

[0009] An optical assembly is arranged adjacent to the EC lens, and the optical assembly is arranged on a side of the second glass substrate away from the first glass substrate.

[0010] At least one of the reflective polarizers is attached to a side surface of the second glass substrate away from the first glass substrate.

[0011] Further, the reflective polarizer is any one of an RPM film, an APF film or a DBEF film.

[0012] In one preferred embodiment of the present application, a specific structural design scheme for the optical assembly is provided.

[0013] In the preferred embodiment, a first conductive layer is arranged on a side of the first glass substrate facing the electrochromic liquid, and a second conductive layer is arranged on a side of the second glass substrate facing the electrochromic liquid.

[0014] Further, the first conductive layer and the second conductive layer are both transparent conductive coatings.

[0015] In one preferred embodiment of the present application, a specific structural design scheme for the EC lens is provided.

[0016] In the preferred embodiment, the optical assembly comprises a TFT module, and the TFT module is arranged adjacent to the EC lens.

[0017] Further, the size of the reflective polarizer is greater than or equal to the size of the TFT module.

[0018] In one preferred embodiment of the present application, another specific structural design scheme for the EC lens is provided.

[0019] In the preferred embodiment, the EC lens further comprises an electrode sheet, the electrode sheet comprises a positive electrode sheet and a negative electrode sheet, and the positive electrode sheet and the negative electrode sheet are located on the same side of the EC lens.

[0020] Further, the electrode sheet is an L-shaped electrode sheet, the L-shaped electrode sheet comprises a first end and a second end, an end of the first end is connected with the first conductive layer, and a side of the second end is connected with a side surface of the second glass substrate away from the first glass substrate.

[0021] Further, the size of the first glass substrate is larger than the size of the second glass substrate, so that the first glass substrate protrudes relative to the second glass substrate to form a connecting portion, and the first conductive layer at the first end and the connecting portion is connected.

[0022] Further, the EC mirror further comprises a flexible circuit board connected to the other side of the second end through an ACF hot pressing process.

[0023] In summary, the high-transmittance streaming media rearview mirror provided by the utility model has at least the following technical effects compared with the prior art:

[0024] 1) The EC mirror of the utility model comprises a first glass substrate, a second glass substrate and an electrochromic liquid filled between the two, the electrochromic liquid reversibly changes color when an external current is turned on, and is used for color adjustment, changing optical properties such as reflectivity, transmittance and absorptivity, and realizing automatic anti-dazzling and other functions.

[0025] 2) A reflective polarizer is arranged between the EC mirror and the optical assembly, when the polarized light of the optical assembly is in an off state, at this time, the rearview mirror is in a non-streaming media mode, the EC mirror has high reflectivity and can function as a reflector to reflect the image behind the vehicle in a physical mirror image mode.

[0026] 3) When the optical assembly works and emits polarized light, at this time, the rearview mirror is in a streaming media mode, the reflective polarizer has a high-transmittance (theoretically up to 100%) effect on the polarized light emitted by the optical assembly, so that the image behind the vehicle is presented in a video mode; therefore, on the basis of realizing high-transmittance of the rearview mirror and meeting the high screen brightness index, the utility model does not need to increase the backlight brightness, can significantly reduce the power consumption, and greatly reduces the surface temperature and screen temperature rise of the streaming media rearview mirror.

[0027] 4) The reflective polarizer is arranged on the side surface of the second glass substrate away from the first glass substrate, compared with the scheme of coating a reflective film on the surface between the two glass substrates of the traditional EC mirror, the design mode of the utility model can paste the reflective polarizer after assembling the EC mirror according to actual needs, or assemble the two glass substrates after pasting the reflective polarizer, which is simple and convenient to operate, and can avoid the interference or influence of the electrochromic liquid on the reflective polarizer, and improve the stability of the EC mirror during long-term use. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is an explosion schematic view of the high-transmittance streaming media rearview mirror of the utility model;

[0029] Figure 2 It is a structural schematic view of the high-transmittance streaming media rearview mirror of the utility model;

[0030] Figure 3 for Figure 2 the A-A cross-sectional view shown in the figure;

[0031] Figure 4 for Figure 3 the H part local enlarged view shown in the figure;

[0032] Wherein, the meaning of the reference signs is as follows:

[0033] 1, EC lens; 2, first glass substrate; 21, connecting part; 3, second glass substrate; 4, reflective polarizer; 5, electrode sheet; 6, first end; 7, second end. DETAILED DESCRIPTION

[0034] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application.

[0035] In the description of the present application, it should be pointed out that the directions or position relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are the directions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0037] Referring to Figure 1 According to the embodiments of the present application, the high-transmittance streaming media rearview mirror includes an EC lens 1, the EC lens 1 includes a first glass substrate 2 and a second glass substrate 3, and a gap is provided between the first glass substrate 2 and the second glass substrate 3, and the gap is filled with an electrochromic liquid. Wherein, the electrochromic liquid can undergo reversible color change when the external current is turned on, which is used to play a color adjusting role, change its reflectivity, transmittance and absorption rate and other optical properties, so that the streaming media rearview mirror realizes automatic anti-dazzling and other functions. In particular, the size of the gap between the first glass substrate 2 and the second glass substrate 3 is preferably set to 0.1mm.

[0038] In addition, the high-transmittance streaming media rearview mirror further comprises an optical assembly (not shown in the figure) disposed adjacent to the EC mirror 1 and disposed on the side of the second glass substrate 2 away from the first glass substrate 1. One of the purposes of disposing the optical assembly is to generate and emit polarized light during operation. In particular, the optical assembly can comprise a display screen module, a backlight module and the like structure, and the backlight module creates a uniform, suitable brightness and stable and reliable backlight environment for the display screen module by illuminating the display screen module with a light source, so that the display screen can normally display clear and colorful images.

[0039] Referring to Figure 1 As shown in the figure, the reflective polarizer 4 is disposed between the EC mirror 1 and the optical assembly, and at least one layer of the reflective polarizer 4 is attached to the side surface of the second glass substrate 3 away from the first glass substrate 2. The reflective polarizer 4 has high transmittance for the polarized light emitted by the optical assembly in the working state. In the technical solution of the embodiment, when the optical assembly does not emit polarized light, the streaming media rearview mirror is in a non-streaming media mode (i.e. a mirror mode), the EC mirror 1 has high reflectivity and can function as a mirror to reflect the image behind the vehicle in a physical mirror mode. When the optical assembly works and emits polarized light, the streaming media rearview mirror is in a streaming media mode, the reflective polarizer 4 has high transmittance (theoretically up to 100%) for the polarized light emitted by the optical assembly, so as to present the image behind the vehicle in a video mode.

[0040] Therefore, the EC mirror 1 of the utility model cancels the coating on any inner surface between the two glass substrates, and instead, the reflective polarizer 4 is attached to the lower surface of the second glass substrate 2. On the premise of meeting the high-transmittance performance of the streaming media rearview mirror and meeting the high-screen brightness index, the brightness of the optical assembly does not need to be increased, the power consumption can be significantly reduced, and the outer surface temperature and screen temperature rise of the streaming media rearview mirror can be greatly reduced. Further, since the reflective polarizer 4 is disposed on the side surface of the second glass substrate 3 away from the first glass substrate 2, compared with the scheme of coating a reflective film on the inner surface between the two glass substrates of the traditional EC mirror, the design of the utility model can paste the reflective polarizer 4 after assembling the EC mirror 1 according to actual needs, or assemble the two glass substrates 1 after pasting the reflective polarizer 4, which is simple and flexible to operate, and can avoid the interference or influence of the reflective polarizer by the electrochromic liquid, thereby improving the stability of the EC mirror 1 during long-term use.

[0041] Preferably, the reflective polarizer 4 of the utility model can adopt any one of an RPM film, an APF film or a DBEF film, and preferably adopts an RPM film.

[0042] The working principle of the RPM film (Reflective Polarizing Mirror) determines that it has high reflectivity while meeting high transmittance: the biggest difference between the RPM film and the ordinary polarizer is that the surface of the RPM film has high reflectivity, and when no light is transmitted behind the RPM film, it can have a reflectivity of more than 40%, while the ordinary polarizer is generally below 5%; when the optical assembly behind the RPM film emits light, the RPM film can transmit the light emitted by the optical assembly, and since the emitted light is polarized light, when the polarization direction of the RPM film is completely parallel to the polarization direction of the upper polarizer of the TFT in the optical assembly, the RPM film can have a transmittance of nearly 100% for the polarized light of the display screen.

[0043] Embodiment 1

[0044] In a preferred embodiment of the present application, a specific structural design scheme for the EC lens 1 is provided.

[0045] In the technical scheme of this embodiment, the first glass substrate 2 is provided with a first conductive layer on the side facing the electrochromic liquid, and the second glass substrate 3 is provided with a second conductive layer on the side facing the electrochromic liquid. The first conductive layer and the second conductive layer are respectively attached to the inner sides of the first glass substrate 2 and the second glass substrate 3 and are in direct contact with the electrochromic liquid between the two glass substrates. The main function is to ensure the passage of polarized light while being connected to an external power supply or circuit to provide power for the electrochromic liquid when the external current is turned on, so that the electrochromic liquid undergoes reversible color change, which serves to adjust the color, change the optical properties such as reflectivity, transmittance and absorptivity, and thus realize the functions of automatic anti-dazzling and the like of the streaming media rearview mirror.

[0046] Further, the first conductive layer and the second conductive layer are both transparent conductive coatings, which are used to ensure that the polarized light emitted by the optical assembly can pass through the first glass substrate 2 and the second glass substrate 3 while the color change occurs after the external current is applied.

[0047] Preferably, the electrochromic liquid in the present embodiment can include organic electrochromic materials, inorganic electrochromic materials and composite electrochromic materials, and preferably a composite electrochromic material is used. The first conductive layer and the second conductive layer in the present embodiment can preferably be transparent conductive layers formed of indium tin oxide (ITO) conductive glass.

[0048] Embodiment 2

[0049] In another preferred embodiment of the present application, a specific structural design scheme for the optical assembly is provided.

[0050] In the technical scheme of the embodiment, the optical assembly comprises a TFT module, and the TFT module and the EC lens 1 are arranged adjacently. Specifically, the TFT module can comprise an upper glass sheet, an upper polaroid, a liquid crystal, a lower polaroid and a lower glass sheet arranged in sequence, and the main function of the TFT module is to convert the natural light generated by the backlight source of the optical assembly into polarized light, and then control the voltage size through the liquid crystal layer to change the deflection direction of the liquid crystal, so as to control the "amount" of light passing through, and finally form an image. Specifically, after the assembly of the streaming rearview mirror is completed, the EC lens 1 is located at the opening of the streaming rearview mirror shell, and the TFT module is located in the inner cavity of the streaming rearview mirror shell, and the polarized light generated and converted by the TFT module realizes the image display effect in combination with the EC lens 1.

[0051] In one preferred scheme of the embodiment, the size of the reflective polaroid 4 is greater than or equal to the size of the TFT module, so as to ensure that the polarized light generated and converted by the TFT module can be covered by the reflective polaroid 4. When the TFT module works and emits polarized light, the reflective polaroid 4 has a high-transmittance effect (theoretically up to 100%) on the polarized light emitted by the TFT module, so as to present the rear driving image in the form of a video picture.

[0052] It is worth mentioning that the size of the reflective polaroid 4 and the size of the TFT module in the embodiment refer to the size in the plane extension direction, that is, the size in the length direction and the width direction, but not the thickness.

[0053] Embodiment 3

[0054] In another preferred embodiment of the utility model, another specific structural design scheme of the EC lens 1 is provided.

[0055] Referring to Figure 1 In the technical scheme of the embodiment, the EC lens 1 further comprises an electrode sheet 5, and the electrode sheet 5 comprises a positive electrode sheet and a negative electrode sheet, and the positive electrode sheet and the negative electrode sheet are located on the same side edge of the EC lens 1. Specifically, the streaming rearview mirror comprises a display area and a non-display area (i.e. a black edge area), and if the positive electrode sheet and the negative electrode sheet are arranged on different side edges of the EC lens 1, at least two black edge areas need to be arranged corresponding to the installation positions of the two electrode sheets, so that the overall display effect of the streaming rearview mirror is poor and the processing and assembly operation is not convenient. In the embodiment, the positive electrode sheet and the negative electrode sheet are arranged on the same side edge of the EC lens 1, and when installed, the side edge can be correspondingly arranged as the side edge with a wider black edge area, and no other black edge area needs to be arranged, so that the mirror display effect is optimized. Moreover, arranging the EC lens 1 on the same side edge can also provide a wider area for the welding area of the FPC (flexible current plate), which is beneficial to the overall design and production operation of the EC lens 1.

[0056] Preferably, referring to Figures 1-3 As shown in the drawings, the positive electrode sheet and the negative electrode sheet are located at the same long side of the EC mirror 1, which is further conducive to the layout of the circuit board and other components and the overall space design of the streaming rearview mirror.

[0057] Preferably, referring to Figures 2-4 As shown in the drawings, in one preferred embodiment of the embodiment, the electrode sheet 5 is an L-shaped electrode sheet, which includes a first end 6 and a second end 7, and the end of the first end 6 is connected with the first conductive layer to be electrically connected with the electrochromic liquid between the first conductive layer and the first glass substrate 2 and the second glass substrate 3. Specifically, the external circuit provides electrical energy to the electrochromic liquid through the L-shaped electrode sheet, so that the electrochromic liquid undergoes reversible color change, which is used to play a color adjusting role to change the optical properties such as reflectivity, transmittance and absorptivity, so that the streaming rearview mirror of the utility model realizes automatic anti-dazzling and other functions.

[0058] Preferably, the end of the first end 6 can be connected with the first conductive layer through conductive glue, and the second end 7 can be connected with the side surface of the second glass substrate 3 away from the first glass substrate 2 through double-sided adhesive tape.

[0059] Preferably, referring to Figure 4 As shown in the drawings, the size of the first glass substrate 2 is larger than that of the second glass substrate 3, so that the first glass substrate 2 extends relative to the second glass substrate 3 to form a connecting portion 21, and the first end 6 of the L-shaped electrode sheet is connected with the first conductive layer at the connecting portion 21. Among them, the connecting portion 21 formed by the extension of the first glass substrate 2 relative to the second glass substrate 3 is used to provide a connecting area for the electrical connection of the two L-shaped electrode sheets and the first conductive layer, and is also used to connect with the opening of the rearview mirror shell to realize the assembly of the EC mirror 1. Specifically, the connecting portion 21 corresponds to the opening of the rearview mirror shell, and the two are fixedly connected through optical glue.

[0060] Further, the EC mirror 1 further comprises at least two flexible circuit boards, which are connected with the other side of the second end 7 of the L-shaped electrode sheet through ACF hot pressing process, that is, connected with the side of the second end 7 of the L-shaped electrode sheet away from the second glass substrate 3. After connection, the two flexible circuit boards and the two electrode sheets 5 are located at the same side edge (that is, the side edge with a wider black edge area) of the EC mirror 1, which provides a wider area for the welding area of the flexible current board, and is conducive to the optimization of the display effect of the EC mirror 1, the overall design and production operation, etc.

[0061] In summary, the high-transmittance streaming rearview mirror provided by the utility model can realize high-transmittance performance and meet high-screen brightness indicators without increasing backlight brightness, can significantly reduce power consumption, and can greatly reduce the surface temperature and screen temperature rise of the streaming rearview mirror.

[0062] The technical means disclosed in the utility model scheme are not limited to the technical means disclosed in the above-mentioned embodiments, and also include technical schemes composed of any combination of the above technical features. It should be pointed out that, for ordinary skilled persons in the technical field, under the premise of not departing from the principle of the utility model, a number of improvements and refinements can be made, and these improvements and refinements are also considered to be within the protection scope of the utility model.

Claims

1. A high-transmission streaming media rearview mirror, characterized in that, The application relates to an electrochromic (EC) lens, an optical assembly and a manufacturing method thereof. The EC lens comprises a first glass substrate and a second glass substrate, and a gap is arranged between the first glass substrate and the second glass substrate, and the gap is filled with an electrochromic liquid; The optical assembly is arranged adjacent to the EC lens, and the optical assembly is arranged on a side of the second glass substrate away from the first glass substrate; At least one reflective polarizer is arranged between the EC lens and the optical assembly, and the at least one reflective polarizer is attached to a surface of the second glass substrate away from the first glass substrate.

2. The high-transmission flow-through mirror according to claim 1, wherein, The reflective polarizer is any one of an RPM film, an APF film or a DBEF film.

3. The high transmission flow-through mirror of claim 1, wherein, A first conductive layer is arranged on a side of the first glass substrate facing the electrochromic liquid, and a second conductive layer is arranged on a side of the second glass substrate facing the electrochromic liquid.

4. The high transmission flow-through mirror according to claim 3, wherein, The first conductive layer and the second conductive layer are both transparent conductive coatings.

5. The high transmission flow-through mirror of claim 1, wherein, The optical assembly comprises a TFT module, and the TFT module is arranged adjacent to the EC lens.

6. The high transmission flow-through mirror according to claim 5, wherein, The size of the reflective polarizer is greater than or equal to the size of the TFT module.

7. The high transmission flow-through mirror according to claim 3, wherein, The EC lens further comprises an electrode sheet, and the electrode sheet comprises a positive electrode sheet and a negative electrode sheet, and the positive electrode sheet and the negative electrode sheet are arranged on the same side of the EC lens.

8. The high transmission flow-through mirror according to claim 7, wherein, The electrode sheet is an L-shaped electrode sheet, and the L-shaped electrode sheet comprises a first end and a second end, an end of the first end is connected with the first conductive layer, and one side of the second end is connected with a surface of the second glass substrate away from the first glass substrate.

9. The high transmission flow-through mirror according to claim 8, wherein, The size of the first glass substrate is greater than the size of the second glass substrate, so that the first glass substrate extends relative to the second glass substrate to form a connecting portion, and the first conductive layer at the first end and the connecting portion is connected.

10. The high transmission flow-through mirror according to claim 8, wherein, The EC lens further comprises a flexible circuit board, and the flexible circuit board is connected with the other side of the second end through an ACF hot-pressing process.

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