TWI447425B - Vehicle display mirror and method of manufacturing the same - Google Patents

Description

Vehicle display mirror and manufacturing method thereof

The present invention relates to a vehicle display mirror and a method of fabricating the same, and more particularly to a vehicle display mirror that can be used as a rearview mirror of a vehicle and a method of fabricating the same.

In the past, the mirror group of the conventional rearview mirror reflected the rear image through the metal plating layer or the multilayer film reflection layer, so that the driver can monitor the safety around the vehicle at any time. However, when the light is too bright and the incident light is strong, or when the incident light that causes the headlights of the vehicle to illuminate corresponds to the rearview mirror, glare will occur, making it impossible for the driver to view the image on the mirror group. Clear, so this situation involves a state in which the reflectivity of the mirror is too high to be easily formed. If the incident light is strong, the transmittance can be reduced to reduce the occurrence of this condition. Therefore, how to reduce the situation The anti-glare condition of the mirror is related to the reflection of the mirror group, which deserves further innovation and research and development.

The embodiment of the invention provides a display mirror for a vehicle and a manufacturing method thereof. The vehicle display mirror can be used not only as a rear view mirror of the car, but also a display screen installed in the vehicle display mirror to provide a clearer display to the user.

Embodiments of the present invention provide a display mirror for a vehicle, including: a reflective polarizing unit and an image display unit. The reflective polarizing unit comprises at least one multilayer film reflection sheet composed of a plurality of layers of polymer optical films stacked on each other, and at least one of the plurality of multilayer polymer optical films is a birefringent material layer, which conforms to the condition of NX≠NY≠NZ, wherein NX is the refractive index of light in the X direction, NY is the refractive index of light in the Y direction, and NZ is the light in Z. The refractive index of the direction. The image display unit includes at least one display screen, wherein the multilayer film reflection sheet is disposed on the display screen.

Embodiments of the present invention provide a method for fabricating a display lens for a vehicle, comprising the steps of: (A) stacking a plurality of polymer optical films on each other and co-pending into a multilayer film reflection sheet, wherein at least one layer of the multilayer polymer optical film Is a birefringent material layer that conforms to the conditions of NX≠NY≠NZ, where NX is the refractive index of light in the X direction, NY is the refractive index of light in the Y direction, and NZ is the refractive index of light in the Z direction; (B) Extending the multilayer film reflective sheet; (C) forming or attaching a first functional layer and a second functional layer respectively on a first surface and a second surface of the multilayer film reflective sheet to complete a reflection (D) cutting the reflective polarizing unit into a predetermined size conforming to a display screen size; and finally, (E) attaching the above-mentioned reflective polarizing unit conforming to the display screen size to the display screen.

Embodiments of the present invention provide a method for fabricating a display lens for a vehicle, comprising the steps of: (A) stacking a plurality of polymer optical films on each other and co-pending into a multilayer film reflection sheet, wherein at least one layer of the multilayer polymer optical film Is a birefringent material layer that conforms to the conditions of NX≠NY≠NZ, where NX is the refractive index of light in the X direction, NY is the refractive index of light in the Y direction, and NZ is the refractive index of light in the Z direction; (B) Extending the multilayer film reflective sheet; (C) forming or attaching a first substrate and a first functional layer to a first surface and a second surface of the multilayer film reflective sheet, respectively, and Forming or attaching a second substrate and a second functional layer respectively on the first functional layer and the first substrate to complete a reflective polarizing unit; (D) cutting the reflective polarizing unit into a conformance A predetermined size of the screen size is displayed; finally, (E) the above-mentioned reflective polarizing unit conforming to the display screen size is attached to the display screen.

Embodiments of the present invention provide a method for fabricating a display lens for a vehicle, comprising the steps of: (A) stacking a plurality of polymer optical films on each other and co-pending into a multilayer film reflection sheet, wherein at least one layer of the multilayer polymer optical film Is a birefringent material layer that conforms to the conditions of NX≠NY≠NZ, where NX is the refractive index of light in the X direction, NY is the refractive index of light in the Y direction, and NZ is the refractive index of light in the Z direction; (B) Extending the multilayer film reflective sheet; (C) forming or attaching a first substrate and a second substrate to a first surface of the multilayer film reflective sheet and a second surface, and a functional layer and a second functional layer are separately formed or attached on the first substrate and the second substrate to complete a reflective polarizing unit; (D) the reflective polarizing unit is cut into a conforming one The predetermined size of the screen size is displayed; finally, (E) the above-mentioned reflective polarizing unit conforming to the display screen size is attached to the display screen.

In summary, the display mirror for a vehicle and the method for fabricating the same according to the embodiments of the present invention can transmit the design of a multilayer reflective sheet composed of a plurality of layers of polymer optical films stacked on each other to make the present invention The vehicle display mirror can be used as a rear view mirror of the car, and the display screen installed in the vehicle display mirror can provide a clear display to the user.

For a better understanding of the features and technical aspects of the present invention, reference should be made to the accompanying drawings.

[First Embodiment]

Referring to FIG. 1A and FIG. 1B, a first embodiment of the present invention provides a display mirror M for a vehicle, comprising: a reflective polarizing unit 1 and an image display unit 2, wherein the reflective polarizing unit 1 includes at least one Multi-layer high The multilayer optical film 100 is stacked on each other (as shown in FIG. 1A). The image display unit 2 includes at least one display screen 20, and the multilayer film reflection sheet 10 can be disposed on the display screen 20 (FIG. 1B). Shown). Furthermore, at least one of the above multilayer polymer optical films 100 is a layer of birefringent material which meets the conditions of NX≠NY≠NZ at a specific wavelength, wherein NX is the refractive index of light in the X direction, and NY is light. The refractive index in the Y direction, NZ is the refractive index of light in the Z direction. In addition, the reflective polarizing unit 1 further includes a first functional layer 11A and a second functional layer 11B respectively formed on or attached to a first surface of the multilayer film reflective sheet 10 and a second surface. The first functional layer 11A and the second functional layer 11B may each be a metal oxide layer or an ultraviolet light absorbing layer.

In addition, the multilayer polymer optical film 100 may be provided with a thick protective layer on the upper and lower surfaces to protect the multilayer film inside the polymer optical film 100, which is a multilayer polymer. At least one layer of the optical film 100 may be an ultraviolet light reflecting layer for reflecting ultraviolet light, and further may include an infrared reflecting layer reflecting infrared rays, and the ultraviolet light or infrared reflecting layer may be composed of a single layer or a plurality of optical films. The production method can use a polymer multilayer film, or add metal oxide particles, or add an ultraviolet light absorber, and can be applied by coating or extrusion or by pressure sensitive adhesive or UV adhesive curing ( Lamination) may be disposed on any surface of the polymer multilayer film 100, and may also be provided with other functional layers, such as a protective layer capable of providing a structural layer or scratch resistance for increasing the strength and toughness of the structural body of the polymer multilayer film 100, or a self-cleaning nano layer or a microstructure layer having a collecting, refraction or diffusion capability in the polymer multilayer film 100 On the surface. The structure for setting an optical microstructure layer having a specific optical effect may be a diamond A prism, a pyramid, a hemisphere, an aspheric, a Fresnel lens, a lenticular or a grating structure may be provided. In addition, the multilayer film reflection sheet 10 can be formed by uniaxial stretching or biaxial stretching, so that the average transmittance of the multilayer film reflection sheet 10 in the spectrum of 380 nm to 780 nm can be selectively between 30% and 90%. This can effectively control the intensity of light. Further, if the multilayer film reflection sheet 10 is formed by biaxial stretching, the multilayer film reflection sheet 10 may selectively have a polarization characteristic or no polarization characteristics depending on different use requirements.

For example, the structure of the multilayer film reflection sheet 10 is formed by laminating a plurality of layers of high and low refractive index, as shown in FIG. 1A, the polymer optical film 100 is superposed, and in fact, the multilayer film reflection sheet 10 has a large inner layer. The number of layers in which the molecular optical film 100 is stacked may be from tens of layers to hundreds of layers, and only the multilayer structure is illustrated in FIG. 1A, and hundreds of layers of structures are not shown, and the tens to hundreds of layers of polymer optics are not shown. The basic unit of the film is composed of two kinds of materials which are arranged in reverse, one of which has the condition of NX≠NY≠NZ, and the optical thickness (the product of the refractive index and the physical thickness) of each layer in the optical film causes an optical phase difference. The specific optical phase difference will create the necessary conditions for optical interference. Through the thickness of the integral multilayer film sheet 10, the material and the degree of elongation in the manufacturing process to change its optical characteristics, it can be designed according to actual needs. The characteristics of the multilayer film reflection sheet 10 can be adjusted according to requirements, in particular, after the uniaxial or biaxial stretching forming method, the multilayer film reflection sheet 10 can be selectively interposed in the transmittance of light at a spectrum of 380 nm to 780 nm. Between 30% and 90%.

In addition, the multilayer film reflection sheet 10 can utilize a uniaxial or biaxial stretching forming method to effectively adjust the ratio of the P and S polarization states, and it can also utilize only double Axial extension adjustment produces light in a non-polarized state. Furthermore, a surface structure may be provided on any surface of the polymer multilayer film 100 inside the multilayer reflective sheet 10, and the surface structure generally has the functions of providing physical structure, such as anti-sticking and scratch-proof functions. It is provided with the function of having a photocatalyst layer or a self-cleaning layer, and when the light beam is driven into the photocatalyst layer, it can decompose environmental harmful substances. In addition to special functional uses, the additional function of setting the surface structure is to provide optical applications such as setting prism, pyramid, hemisphere, aspheric, Fresnel lens. (Fresnel lens), grating or a combination of the above. In short, the surface structure on the surface of the polymer multilayer film 100 can produce optical effects such as condensing, mixing, refraction, and scattering light.

In the production process, in particular, when the multilayer film reflection sheet 10 is formed, it can be changed in a uniaxial direction or a biaxial direction by an extension machine, so that the molecular chain and the alignment structure of the internal polymer are changed, and the modification thereof is changed. Physical characteristics, parameters of the extended forming method include extended temperature, elongation rate, stretching ratio, shrinkage ratio, extended orbital path, heat setting temperature and time, and the like.

For example, after uniaxial or biaxial stretching (generally uniaxial stretching magnification can be 1.5 to 6 times, or even larger magnification, depending on the demand and film material), the film material of the multilayer polymer film 100 includes terephthalic acid. Polyethylene terephthalate (PET), Polycarbonate (PC), Tri-acetyl Cellulose (TAC), Polymethylmethacrylate (PMMA), MS plastic (Polyethylene Terephthalate, PET) Methylmethacrylate styrene), Polypropylene (PP), Polystyrene (PS), Polymethylmethacrylate (PMMA), or Cyclic Olefin Copolymer (COC) , polyethylene naphthalate (PEN), Ethylene-Tetrafluoroethylene (ETFE), polylactide (PLA), or a material obtained by mixing or polymerizing the above materials. The optical element after the uniaxial stretching method can have a polarizing effect in a specific direction and can adjust the wavelength range of the light of its polarization.

In the case of the biaxial extension forming method (the biaxial stretching two-axis extension ratio may be different, or the sequential biaxial or simultaneous biaxial stretching), in addition to adjusting the wavelength range, the light passing through the multilayer film reflection sheet 10 can be more controlled. The ratio of P polarization to S polarization can also be adjusted to be close to the non-polarization state.

Referring to FIG. 1C, a first embodiment of the present invention provides a method for manufacturing a display lens for a vehicle, comprising: (A) stacking and co-plying a multilayer polymer optical film 100 into a multilayer film reflection sheet 10, wherein the above At least one layer of the multilayer polymer optical film 100 is a layer of birefringent material, which conforms to the condition of NX≠NY≠NZ, wherein NX is the refractive index of light in the X direction, NY is the refractive index of light in the Y direction, and NZ is light. a refractive index in the Z direction (S100); (B) extending the multilayer film reflection sheet 10 (S102); (C) forming or attaching a first functional layer 11A and a second functional layer 11B to the multilayer film, respectively a first surface of the reflective sheet 10 and a second surface to complete a reflective polarizing unit 1 (S104); (D) cutting the reflective polarizing unit 1 to a predetermined size corresponding to a display screen size ( S106); Finally, (E) the above-described reflective polarizing unit 1 conforming to the size of the display screen 20 is attached to the display screen 20 (S108).

For forming a multi-layered substrate by means of a multi-layer extrusion, for example, as shown in FIG. 1D, different materials are used to produce a multi-layer effect through different feed zones. In this example, the material passes through the main feed zone D1. Feeding separately from the secondary feed zone D2, and then using the feed screw D3 and distributed in the feed zone Heater D4 mixes the materials. The material of each layer can be highly selective in this way, and the materials of each layer can be different materials, wherein the light-transmitting diffusion particles can be mixed in a specific layer and melt-kneaded on the process feeder table. After the die D5 is pushed out, a certain thickness can be obtained, and the thickness of the substrate can be adjusted by the roller D6, and the surface structure can be generated for the stamper of one surface or the upper and lower surfaces, and finally the material is solidified by the cooling platform D7, and the detecting device is used. D8 detects if the characteristics of the diffusing element meet the requirements.

In one embodiment of the present invention, the multilayer film reflection sheet 10 is made of a plurality of composite materials in which a plurality of composite materials are alternately stacked and stacked, and the refractive index difference of the multilayer film reflection sheet 10 composed of a plurality of polymers interferes with the thickness thereof. Conditional conditions can cause polarized reflection of light, but because of the stricter film interference conditions, optical lens coating technology often requires more than a dozen layers to hundreds of layers of high and low refractive index materials to be stacked repeatedly to achieve high reflectivity. However, the multilayer film reflection sheet 10 of the present invention can also increase the light reflectance of the polarized light by multiple interference reflections of the multilayer high-low refractive index material stack in the similar film interference. The higher the refractive index difference, the more multilayer and the thickness of the stack. The more uniform the control, the better the reflectance for a particular wavelength. For example, in the embodiment, the PET and PEN materials are stacked in the same manner as the (AB) ⁿ structure, wherein n is an integer value, and the design is usually between 10 and 500, preferably about 120~. Between 180, when the temperature control during the extension occurs, the birefringence anisotropy of the stretched molecular material can cause the anisotropic and isotropic refractive index changes of the multilayer stacked film stack, and the design 1/ 4 The design of the thickness of the optical wavelength design can achieve the conditions of multilayer film interference.

[Second embodiment]

Referring to FIG. 2A, a second embodiment of the present invention provides a vehicle. The display mirror comprises: a reflective polarizing unit 1 and an image display unit (not shown). 2A and FIG. 1A, the difference between the second embodiment and the first embodiment is that, in the second embodiment, the reflective polarizing unit 1 further includes: a first substrate 12A and a second substrate. 12B, which is formed or attached to the first functional layer 11A and the second functional layer 11B, respectively. For example, the first substrate 12A and the second substrate 12B may be selected from the group consisting of polyethylene terephthalate (PET), polycarbonate (Poly Carbonate, PC), and polyethylene. Group of PE), Poly Vinyl Chloride (PVC), Polypropylene (PP), Poly Styrene (PS), and Polyrnethylmethacrylate (PMMA) .

Referring to FIG. 2B, a second embodiment of the present invention provides a method for manufacturing a display lens for a vehicle, comprising: (A) stacking and co-plying a multilayer polymer optical film 100 into a multilayer film reflection sheet 10, wherein the above At least one layer of the multilayer polymer optical film 100 is a layer of birefringent material, which conforms to the condition of NX≠NY≠NZ, wherein NX is the refractive index of light in the X direction, NY is the refractive index of light in the Y direction, and NZ is light. a refractive index in the Z direction (S200); (B) extending the multilayer film reflection sheet 10 (S202); (C) forming or attaching a first functional layer 11A and a second functional layer 11B to the multilayer film, respectively a first surface of the reflective sheet 10 and a second surface, and a first substrate 12A and a second substrate 12B are respectively formed or attached on the first functional layer 11A and the second functional layer 11B. Completing a reflective polarizing unit 1 (S204); (D) cutting the reflective polarizing unit 1 into a predetermined size conforming to a display screen size (S206); finally, (E) reflecting the above-mentioned size corresponding to the display screen 20 The polarizing unit 1 is attached to the display screen 20 (S208).

[Third embodiment]

Referring to FIG. 3A, a third embodiment of the present invention provides a display mirror for a vehicle, including: a reflective polarizing unit 1 and an image display unit (not shown). As can be seen from the comparison between FIG. 3A and FIG. 1A, the greatest difference between the third embodiment and the first embodiment is that the first substrate 12A and the first functional layer 11A are respectively formed or attached to a first surface of the multilayer film reflection sheet 10. On the upper surface and the second surface, the second substrate 12B and the second functional layer 11B are respectively formed or attached on the first functional layer 11A and the first substrate 12A.

Referring to FIG. 3B, a third embodiment of the present invention provides a method for manufacturing a display lens for a vehicle, comprising: (A) stacking and co-plying a multilayer polymer optical film 100 into a multilayer film reflection sheet 10, wherein the above At least one layer of the multilayer polymer optical film 100 is a layer of birefringent material, which conforms to the condition of NX≠NY≠NZ, wherein NX is the refractive index of light in the X direction, NY is the refractive index of light in the Y direction, and NZ is light. a refractive index in the Z direction (S300); (B) extending the multilayer film reflection sheet 10 (S302); (C) forming or attaching a first substrate 12A and a first functional layer 11A to the multilayer film respectively a first surface and a second surface of the sheet 10, and a second substrate 12B and a second functional layer 11B are respectively formed or attached on the first functional layer 11A and the first substrate 12A to complete a reflective polarizing unit 1 (S304); (D) cutting the reflective polarizing unit 1 into a predetermined size conforming to a display screen size (S306); finally, (E) reflecting the above-mentioned reflecting display screen size The polarizing unit 1 is attached to the display screen 20 (S308).

[Fourth embodiment]

Referring to FIG. 4A, a fourth embodiment of the present invention provides a vehicle. The display mirror comprises: a reflective polarizing unit 1 and an image display unit (not shown). 4A and FIG. 1A, the greatest difference between the fourth embodiment and the first embodiment is that the first substrate 12A and the second substrate 12B are respectively formed or attached to a first surface of the multilayer film reflection sheet 10. And a second surface, and the first functional layer 11A and the second functional layer 11B are respectively formed or attached on the first substrate 12A and the second substrate 12B.

Referring to FIG. 4B, a fourth embodiment of the present invention provides a method for manufacturing a display lens for a vehicle, comprising: (A) stacking and co-plying a multilayer polymer optical film 100 into a multilayer film reflection sheet 10, wherein the above At least one layer of the multilayer polymer optical film 100 is a layer of birefringent material, which conforms to the condition of NX≠NY≠NZ, wherein NX is the refractive index of light in the X direction, NY is the refractive index of light in the Y direction, and NZ is light. a refractive index in the Z direction (S400); (B) extending the multilayer film reflection sheet 10 (S402); (C) forming or attaching a first substrate 12A and a second substrate 12B to the multilayer film reflection sheet, respectively Forming or attaching a first functional layer 11A and a second functional layer 11B to a first substrate 12A and a second substrate 12B, respectively, to complete a The reflective polarizing unit 1 (S404); (D) cutting the reflective polarizing unit 1 into a predetermined size conforming to a display screen size (S406); finally, (E) reflecting the above-mentioned reflective polarizing light corresponding to the size of the display screen 20. The unit 1 is attached to the display screen 20 (S408).

[Possible effects of the examples]

In summary, the display mirror for a vehicle and the method for fabricating the same according to the embodiments of the present invention can transmit the design of a multilayer reflective sheet composed of a plurality of layers of polymer optical films stacked on each other to make the present invention The vehicle display mirror can be used as a rear view mirror of the car, and is mounted on the vehicle display mirror The display screen inside can provide a clearer display to the user.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalents of the invention are included in the scope of the invention.

M‧‧‧Car display mirror

1‧‧‧Reflective polarizing unit

10‧‧‧Multilayer film reflector

100‧‧‧Polymer optical film

11A‧‧‧First functional layer

11B‧‧‧Second functional layer

12A‧‧‧First substrate

12B‧‧‧second substrate

2‧‧‧Image display unit

20‧‧‧ Display screen

D1‧‧‧Main feed area

D2‧‧‧ feeding area

D3‧‧‧ Feed screw

D4‧‧‧heater

D5‧‧‧ die

D6‧‧‧Roller

D7‧‧‧ cooling platform

D8‧‧‧Detection device

1A is a side view of a first embodiment of a reflective polarizing unit of the present invention; FIG. 1B is a perspective view of a display mirror for a vehicle according to a first embodiment of the present invention; and FIG. 1C is a display for a vehicle according to a first embodiment of the present invention; FIG. 1D is a schematic view of a device for co-extruding a multilayer reflective film according to the present invention; FIG. 2A is a side view of a second embodiment of a reflective polarizing unit of the present invention; FIG. 2A is a side view of a second embodiment of a reflective polarizing unit of the present invention; and FIG. 3B is a second embodiment of the present invention. FIG. 4A is a side view of a second embodiment of a reflective polarizing unit of the present invention; and FIG. 4B is a flow chart of a method for manufacturing a vehicle display mirror according to a second embodiment of the present invention.

M‧‧‧Car display mirror

1‧‧‧Reflective polarizing unit

2‧‧‧Image display unit

20‧‧‧ Display screen

Claims (13)

A display mirror for a vehicle comprising: a reflective polarizing unit comprising at least one multilayer film reflective sheet composed of a plurality of layers of polymer optical films stacked on each other, at least one of the plurality of multilayer polymeric optical films being a layer of birefringent material , which meets the conditions of NX≠NY≠NZ, where NX is the refractive index of light in the X direction, NY is the refractive index of light in the Y direction, NZ is the refractive index of light in the Z direction; and an image display unit including At least one display screen, wherein the at least one multilayer film reflection sheet is disposed on the at least one display screen, wherein at least two of the multilayer film reflection sheets are respectively an ultraviolet light reflection layer for reflecting ultraviolet light and In the infrared reflecting layer reflecting infrared rays, the multilayer film reflecting sheet is uniaxially or biaxially stretched, so that the average transmittance of the multilayer film reflecting sheet in the spectrum of 380 nm to 780 nm is between 30% and 90%, The intensity of the light is effectively controlled, and any surface of the polymer multilayer film inside the multilayer film reflection sheet is provided with a photocatalyst layer or a self-cleaning layer. The vehicular display mirror of claim 1, wherein the reflective polarizing unit further comprises: a first functional layer and a second functional layer respectively formed or attached to the multilayer reflective film; a first surface and a second surface. The vehicular display mirror of claim 2, wherein the reflective polarizing unit further comprises: a first substrate and a second substrate respectively formed or attached to the first functional layer and On the second functional layer. The vehicular display mirror of the first aspect of the invention, wherein the reflective polarizing unit further comprises: a first substrate, a second substrate, a first functional layer, and a second functional layer, wherein Forming or attaching the first substrate and the first functional layer to a first surface and a second surface of the multilayer film reflective sheet, respectively, and the second substrate and the second functional layer are respectively formed or attached to the second substrate The first functional layer is on the first substrate. The vehicular display mirror of the first aspect of the invention, wherein the reflective polarizing unit further comprises: a first substrate, a second substrate, a first functional layer, and a second functional layer, wherein The first substrate and the second substrate are respectively formed on or attached to a first surface of the multilayer film reflective sheet and a second surface, and the first functional layer and the second functional layer are respectively formed or attached to the second functional layer. The first substrate is on the second substrate. The vehicular display mirror of claim 3, wherein the first functional layer and the second functional layer are both a metal oxide layer or an ultraviolet light absorbing layer, and the first substrate and the first substrate The second substrate is selected from the group consisting of polyethylene terephthalate (PET), polycarbonate (Poly Carbonate, PC), polyethylene (PE), and polyvinyl chloride (Poly Vinyl Chloride). A group consisting of PVC), Poly Propylene (PP), Poly Styrene (PS), and Polymethylmethacrylate (PMMA). A method for manufacturing a display mirror for a vehicle, comprising the steps of: (A) stacking a plurality of polymer optical films on each other and co-pending into a multilayer film reflection sheet, wherein at least one of the plurality of multilayer polymer optical films is a layer of birefringent material , which meets the conditions of NX≠NY≠NZ, where NX is the refractive index of light in the X direction, and NY is the fold of light in the Y direction. The radiance, NZ is the refractive index of the light in the Z direction, and at least two of the multilayer film reflection sheets are respectively an ultraviolet light reflection layer for reflecting ultraviolet light and an infrared reflection layer for reflecting infrared rays, and the above multilayer film The reflection sheet is uniaxially or biaxially stretched, so that the average transmittance of the multilayer film reflection sheet in the spectrum of 380 nm to 780 nm is between 30% and 90%, so as to effectively control the intensity of the light, and the above multilayer film reflection Any surface of the polymer multilayer film inside the sheet is provided with a photocatalyst layer or a self-cleaning layer. (B) extending the multilayer film reflection sheet; (C) forming or attaching a first functional layer and a second functional layer to a first surface and a second surface of the multilayer film reflection sheet, respectively To complete a reflective polarizing unit; (D) cutting the reflective polarizing unit to a predetermined size corresponding to a display screen size; and (E) attaching the reflective polarizing unit conforming to the display screen size to the The display is on the screen. The method for manufacturing a vehicle display mirror according to the seventh aspect of the invention, wherein after the step (C), the method further comprises: forming or attaching a first substrate and a second substrate to the first The functional layer is on the second functional layer. The method for manufacturing a vehicle display mirror according to claim 8, wherein the first functional layer and the second functional layer are both a metal oxide layer or an ultraviolet light absorbing layer, and the first substrate and the first The two substrates are selected from the group consisting of polyethylene terephthalate, polycarbonate, polyethylene, polyvinyl chloride, polypropylene, polystyrene, and polymethyl methacrylate. A method for manufacturing a display mirror for a vehicle, comprising the steps of: (A) stacking a plurality of polymer optical films on each other and co-pending into a multilayer film reflection sheet, wherein at least one of the plurality of multilayer polymer optical films is a layer of birefringent material , which meets the conditions of NX≠NY≠NZ, where NX is the refractive index of light in the X direction, NY is the refractive index of light in the Y direction, and NZ is the refractive index of light in the Z direction. At least two of the above multilayer film reflection sheets The layers are respectively an ultraviolet light reflecting layer for reflecting ultraviolet light and an infrared reflecting layer for reflecting infrared light, and the multilayer film reflecting sheet is uniaxially or biaxially stretched, so that the multilayer film reflecting sheet is in a spectrum of 380 nm. The average transmittance of 780 nm is between 30% and 90% to effectively control the intensity of light, and any surface of the polymer multilayer film inside the multilayer film reflection sheet is provided with a photocatalyst layer or a self-cleaning layer. (B) extending the multilayer film reflection sheet; (C) forming or attaching a first substrate and a first functional layer to a first surface and a second surface of the multilayer film reflection sheet, respectively And will be one Forming or attaching a second substrate and a second functional layer on the first functional layer and the first substrate to complete a reflective polarizing unit; (D) cutting the reflective polarizing unit into a uniform one Displaying a predetermined size of the screen size; and (E) attaching the above-described reflective polarizing unit conforming to the display screen size to the display screen. The method for manufacturing a vehicle display mirror according to claim 10, wherein the first functional layer and the second functional layer are both a metal oxide layer or an ultraviolet light absorbing layer, and the first substrate and the first The two substrates are all selected from In the group consisting of polyethylene terephthalate, polycarbonate, polyethylene, polyvinyl chloride, polypropylene, polystyrene, and polymethyl methacrylate. A method for manufacturing a display mirror for a vehicle, comprising the steps of: (A) stacking a plurality of polymer optical films on each other and co-pending into a multilayer film reflection sheet, wherein at least one of the plurality of multilayer polymer optical films is a layer of birefringent material , which meets the conditions of NX≠NY≠NZ, where NX is the refractive index of light in the X direction, NY is the refractive index of light in the Y direction, and NZ is the refractive index of light in the Z direction. At least two of the above multilayer film reflection sheets The layers are respectively an ultraviolet light reflecting layer for reflecting ultraviolet light and an infrared reflecting layer for reflecting infrared light, and the multilayer film reflecting sheet is uniaxially or biaxially stretched, so that the multilayer film reflecting sheet is in a spectrum of 380 nm. The average transmittance of 780 nm is between 30% and 90% to effectively control the intensity of light, and any surface of the polymer multilayer film inside the multilayer film reflection sheet is provided with a photocatalyst layer or a self-cleaning layer. (B) extending the multilayer film reflective sheet; (C) forming or attaching a first substrate and a second substrate to a first surface and a second surface of the multilayer film reflective sheet, And will be one Forming or attaching a functional layer and a second functional layer on the first substrate and the second substrate respectively to complete a reflective polarizing unit; (D) cutting the reflective polarizing unit into a display a predetermined size of the screen size; and (E) attaching the above-described reflective polarizing unit conforming to the display screen size to the display screen. The method for manufacturing a vehicle display mirror according to claim 12, wherein the first functional layer and the second functional layer are both a metal oxide layer or an ultraviolet light absorbing layer, and the first substrate and the first The two substrates are selected from the group consisting of polyethylene terephthalate, polycarbonate, polyethylene, polyvinyl chloride, polypropylene, polystyrene, and polymethyl methacrylate.