TW201535020A - Mirror display panel - Google Patents

Abstract

A mirror display panel and a touch mirror display panel are disclosed, which comprise a display panel, a reflecting film disposed above the display panel, wherein the reflecting film has a first penetrating axis and a first absorption axis. When an ambient light with different emitting direction from the display light is irradiating to the display panel, the ambient light with polarizing direction that different from the first penetrating axis is reflected by the reflecting film.

Description

Mirror display

The present invention relates to a mirror display and a touch mirror display, and more particularly to a display panel having both a display function and a specular reflection function.

The popularity of digital audio and video devices, the advancement of display technology, the application field continues to expand, and gradually tend to develop multi-functional display devices, so that in daily life, you can accept all kinds of messages at any time, towards the purpose of intelligent life.

Among them, the mirror device with display function can be provided as the function of the display and the mirror. If it replaces the various commonly used mirrors, such as the vehicle auxiliary mirror, the elevator mirror, the dressing mirror, etc., or replace the various commonly used displays, such as Smart phones, tablets, TVs, etc., can enrich the functions of these devices and provide interactive display of information.

At present, the application method of the mirror display can be used as a mirror when the display area does not display information. At present, in the mirror display, the mirror surface is usually prepared by coating a metal film on a surface of the transparent glass, thereby reflecting Light from an external environment. However, when a metal film is used as the mirror surface, since the metal's extinction coefficient K (coefficient constant) is high, when the display is mounted, the transmittance T of the display light emitted by the display will follow the K of the metal film. The value drops rapidly, such as T~exp(-K/λ), where λ is the wavelength of light. In this way, in order to compensate for the loss of brightness of the display light caused by the metal film, it is necessary to increase the brightness emitted by the display panel to achieve a good display effect. However, in order to increase the brightness of the display panel, there are disadvantages such as increased energy consumption. In addition, due to the shielding effect of the metal film, it is easy to disable the electrical function (such as the touch function) under the metal film. Therefore, a simple metal reflective film does not provide an excellent multifunctional specular display display.

In view of this, there is an urgent need for a novel mirror display which can increase the mirror reflectance and improve the transmittance of display light emitted by the display panel to provide a mirror display having excellent mirror reflection function and display function.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a mirror display that includes a reflective film to provide a mirrored reflection that reduces the effect of the transmittance of the display panel while providing mirror image reflection requirements.

Another object of the present invention is to provide a touch-sensitive mirror display that provides an excellent display function and a specular reflection function, and further has a touch element for operating the display interface by means of touch.

In order to achieve the above object, a mirror display panel of the present invention includes: a display panel; a reflective film disposed on the display panel, The reflective film has a first transmission axis; wherein the mirror display emits a display light having a light exiting direction, and the reflective film is reflected when the external light illuminates the display panel different from the light exiting direction The external light in a polarization direction different from the direction of the first transmission axis.

The mirror display of the present invention further includes a first polarizing plate, the first polarizing plate has a second penetrating axis, and the angle between the second penetrating axis and the first penetrating axis is greater than or equal to 0. And less than 90 degrees, wherein the preferred angle is greater than or equal to 0 degrees and less than or equal to 45 degrees. Wherein, when the polarization direction of the display light is at an angle of 0 degrees with the transmission axis direction of the reflective film, the display light penetrating through the reflective film has a maximum light intensity. The intensity of the transmitted light of the display light penetrating the reflective film decreases as the angle between the direction of penetration of the reflective film and the direction of polarization of the display light increases.

In the mirror display of the present invention, the second polarizing plate further includes a third polarizing plate, and the third transmitting axis is substantially perpendicular to the second transmitting axis of the first polarizing plate. .

In the specular display of the present invention, when the reflective film reflects the external light, the reflected amount of red (R), green (G), and blue (B) reflected in the external light is 0.84< When G/B<1.09 and 0.84<R/B<1.06, the reflective film exhibits a silver tone; and when the ratio of the reflection amount is 1.19<G/B<16.82, and 1.09<R/B<23.18, the champagne is presented. The color of gold. Wherein, the wavelength of the red light is 630 nm: the wavelength of the green light is 550 nm; and the wavelength of the blue light is 450 nm.

In the mirror display of the present invention, the display panel can be a a liquid crystal display panel, an organic light emitting diode display panel, a plasma display panel, a field emission display panel, etc., wherein when the display panel is an organic light emitting diode display panel or a plasma display panel, the mirror display may not The second polarizing plate is included.

In addition, in the mirror display provided by the present invention, the reflective film used in the present invention is preferably formed by a multilayer structure of an all-dielectric film stack (non-metal material), which includes alternating layers of high refractive index and low refractive index. The film is designed to have a suitable reflectance requirement. When the number of film stacks is large, the transmittance (T) and reflectance (R) of the reflective film are as shown in the following formulas (I) and (II):

The refractive index of the N _L- based low refractive index film; the refractive index of the N _H based high refractive index film; the refractive index of the N _S based substrate; and the number of P-based film stacks.

It can be known from the formulas (I) and (II) that the transmittance (T) of the film having a high refractive index or a low refractive index is decreased by (N _L /N _H ) ² for each additional film having a high refractive index or a low refractive index. On the contrary, its reflectance (R) rises.

Accordingly, the present invention uses the above-described reflective film in place of the prior art metal film as a reflective film. The reflective film used in the present invention has a transmission axis and a reflection axis, and the transmission axis is perpendicular to the reflection axis. The action principle of the reflection film is as shown in FIG. 1. The external incident light contains two kinds of polarization directions. P ₁ 'and the ray P _2', and the reflective film 13 of the shaft and the light penetrating the P ₁ 'parallel to the polarization direction, and therefore, when the polarization direction parallel to the axis of the reflective film 13 penetrating ray P _1' of the incident When the film 13 is reflected, the light P ₁ ' penetrates the reflective film 13 to the other side. However, when the light ray P ₂ ' is different from the polarization direction of the transmission axis of the reflection film 13, the light ray P ₂ ' is reflected by the reflection film 13. Similarly, the light from the display module also includes two polarization directions of light P ₁ and P ₂ , wherein the light P ₁ can penetrate the reflection when the polarization direction of the light P ₁ is parallel to the transmission axis of the reflective film 13 . When the film 13 enters the observation side, and the polarization direction of the light ray P ₂ is different from the transmission axis of the reflection film 13, the light ray P ₂ is reflected by the reflection film 13 and cannot enter the observation side. Therefore, when the reflective film is disposed on the mirror display of the present invention, when the display light is disposed on the display panel such that the display light is parallel to the polarization axis of the reflective film, the display light of the polarization direction can be Passing the reflective film to the observation surface of the mirror display. Conversely, the light incident from the observation surface to the mirror display is reflected and formed into a mirror image if the polarization direction is different from the transmission axis of the reflective film. The display screen can be observed on the observation surface, but it can also have a mirror effect. When the display panel is a liquid crystal display panel, the display panel further has a first polarizing plate disposed between the display panel and the reflective film 13. The transmission axis of the first polarizing plate is parallel to the transmission axis of the reflective film 13. The liquid crystal type mirror display can have a maximum transmittance.

In addition, the present invention further provides a touch-sensitive mirror display, comprising: a display panel, the display panel emits a display light, the display light has a light-emitting direction; and a reflective film is disposed on the display panel, wherein the reflective film Having a first transmission axis; a protective layer disposed above the reflective film, the reflective film being located between the protective layer and the first polarizing plate; a touch component disposed on the protective layer and the display panel Wherein the mirror display emits a display light having a light exiting direction, and when the external light illuminates the display panel The reflective film reflects the external light in a polarization direction different from the first transmission axis direction.

11‧‧‧ display panel

12‧‧‧First polarizer

12’‧‧‧Second polarizer

13‧‧‧Reflective film

14‧‧‧Protective layer

15‧‧‧Touch components

56‧‧‧Packing

57‧‧‧Adhesive layer

100,100’,200,300,400,500,600,700,800,800’‧‧‧ Mirror display

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view showing the action of the reflective film of the present invention.

2 is a schematic view of a mirror display of Embodiment 1 of the present invention.

3 is a schematic view of a mirror display of Embodiment 1 of the present invention.

4 is a schematic view of a touch type mirror display device according to Embodiment 2 of the present invention.

FIG. 5 is a schematic diagram of a touch type mirror display device according to Embodiment 3 of the present invention.

6 is a schematic view of a touch type mirror display device according to Embodiment 4 of the present invention.

7 is a schematic diagram of a touch-sensitive mirror display according to a preferred embodiment of the present invention.

FIG. 8 is a schematic diagram of a touch-sensitive mirror display according to a preferred embodiment of the present invention.

9A and 9B are schematic views showing the function of a touch type specular display according to a preferred embodiment of the present invention.

Figure 10 is a schematic view of a mirror display of Embodiment 5 of the present invention.

11 is a schematic view of a touch type mirror display device according to Embodiment 6 of the present invention.

12 is a schematic view of a touch type mirror display device according to Embodiment 7 of the present invention.

13 is a schematic view of a touch type mirror display device according to Embodiment 8 of the present invention.

14 to 17 are schematic views showing the application of the mirror display of the present invention.

The embodiments of the present invention are described by way of specific examples, and those skilled in the art can readily appreciate the other advantages and advantages of the present invention. The present invention may be embodied or applied in various other specific embodiments. The details of the present invention can be variously modified and changed without departing from the spirit and scope of the invention.

Example 1

2 is a schematic view of a mirror display 100 according to the embodiment, wherein the mirror display 100 includes a display panel 11 and a first polarizing plate 12 disposed on the display panel 11 and a second polarizing plate. 12' is disposed below the display panel 11 and a reflective film 13 is disposed on the first polarizing plate 12. In the embodiment, the reflective film 13 has a first transmission axis, and when the light having the same polarization direction as the first transmission axis of the reflective film 13 is incident on the reflective film 13, the incident light can penetrate. The reflective film 13 is, however, if the polarization direction of the light incident on the reflective film 13 is different from the first transmission axis of the reflective film 13, a portion of the incident light is reflected by the reflective film 13 and partially The incident light penetrates the reflective film 13. In an embodiment, the first polarizing plate 12 has a second transmission axis, and the second polarizing plate 12' has a third transmission axis, and the second transmission axis and the third transmission axis are substantially vertical.

In this embodiment, the angle between the second transmission axis of the first polarizing plate 12 and the first transmission axis of the reflective film 13 is greater than or equal to 0° and less than 90°, preferably greater than or equal to 0° and less than It is equal to 45°, and the optimum is 0°, that is, the second transmission axis of the first polarizing plate 12 is preferably parallel to the first transmission axis of the reflective film 13. In this case, the display light emitted by the display element 11 passes through the first polarizing plate 12 and has a first polarization direction P ₁ , and the display light of the first polarization direction P ₁ and the reflective film 13 When the first transmission axis is parallel, the display light of the first polarization direction P ₁ can penetrate the reflective film 13 and enter the observation side. The transmitted light intensity of the display light penetrating the reflective film 13 decreases as the angle between the first transmission axis of the reflective film 13 and the second transmission axis of the first polarizing plate 12 decreases. It is required to design the angle within the above range of angles. When the angle between the first transmission axis of the reflective film 13 and the second transmission axis of the first polarizing plate 12 is 0 degrees, the mirror display panel can achieve maximum brightness.

Furthermore, in the embodiment, the display panel 11 is a liquid crystal display panel, which may be a display panel as known in the art, and may include the above lower substrate, an alignment layer, a liquid crystal layer, a thin film transistor, and a backlight module. The components and the like are not particularly limited in the present invention. The display panel can also be a horizontal (or horizontal) electric field effect display (In-Plane-Switching Liquid Crystal, IPS for short) or a vertical Alignment Liquid Crystal (VA), and there is no particular limitation. .

In addition, in the present embodiment, as shown in FIG. 2, the reflective film 13 is disposed on the first polarizing plate 12. In other embodiments, the reflective film 13 only needs to be disposed above the first polarizing plate. Other layers may be interposed between the first polarizing plate 12 and the reflective film 13 or the first layer. There may be a space between the polarizing plate 12 and the reflective film 13, and there is no particular limitation. system.

Further, as shown in FIG. 2, since the reflective film 13 is provided on the uppermost layer of the mirror display 100, damage or deterioration of the reflective film 13 is liable to occur. Therefore, as shown in FIG. 3, a protective layer 14 is additionally disposed on the reflective film 13 to achieve the effect of protecting the reflective film 13 and the display panel 11. In one embodiment, the protective layer 14 shown in FIG. 3 is composed of a glass plate. However, in other embodiments, the protective layer 14 may be formed of any material known in the art to provide the mirror surface. For the protection function of the display 100', for example, various types of glass materials such as heat-strengthened glass, chemically strengthened glass, and laminated glass can be used, or a polymer material such as silicone rubber, resin, or acrylic can be used as the protective layer. . In another embodiment, the protective layer 14 can be a Hard Coating or other material that is resistant to dirt or scratches.

The mirror display 100' shown in FIG. 3 is prepared by sequentially laminating the display panel 11, the first polarizing plate 12, the reflective film 13, and the protective layer 14. Alternatively, the first polarizing plate 12 may be attached to the display panel 11 , and the reflective film 13 may be attached to the protective layer 14 , and the first polarizing plate 12 and the reflective film 13 may be attached. Combined to form the mirror display 100'.

Example 2

4 is a schematic view of a mirror display 200 according to the embodiment, wherein the touch panel display 200 includes a display panel 11 , a first polarizer 12 is disposed on the display panel 11 , and a second The polarizing plate 12' is disposed under the display panel and has a reflective film 13 A touch element 15 is disposed on the reflective film 13 and a protective layer 14 is disposed on the touch element 13 . The display panel 11, the first polarizing plate 12, the second polarizing plate 12', the reflective film 13, and the protective layer 14 are as described above, so the above description can be incorporated into the same application part herein. And the same description will not be repeated.

The touch element 15 used in the present invention may be a touch substrate of any type, such as a touch film or a two-layer touch film. The control sensing technology type may be, for example, a resistive touch element, a surface capacitive touch element, a projected capacitive touch element, an electromagnetic touch element, an acoustic wave touch element, or an infrared touch element. Alternatively, in other implementations, the touch element 15 and the protective layer 14 can be replaced by a single-chip touch panel, that is, the touch element can be directly formed on the protective layer 14. The protective layer 14 can be a glass plate or a barrier layer having anti-scratch or anti-staining function. The setting range of the touch element 15 of the present invention can also be set only locally without the need for a comprehensive setting.

In this embodiment, the touch element 15 is disposed above the reflective film 13 with a gap therebetween. In other embodiments, the touch panel 15 only needs to be disposed above the reflective film 13. Other layers may be interposed between the touch panel 15 and the reflective film 13 or may be in direct contact. There are no special restrictions.

Example 3

Figure 5 is a representation of the mirror display 300 provided by the embodiment. It is intended that the touch panel display 300 includes a display panel 11 , a first polarizer 12 is disposed on the display panel 11 , and a second polarizer 12 ′ is disposed below the display panel 11 . A reflective film 13 is disposed on the first polarizing plate 12 , a touch component 15 is disposed on the reflective film 13 , and a protective layer 14 is disposed on the touch component 13 . The display panel 11, the first polarizing plate 12, the second polarizing plate 12', the reflective film 13, and the protective layer 14 are as described above, so the above description can be incorporated into the same application part herein. And the same description will not be repeated.

In addition, in other implementations, the touch element 13 and the protective layer 14 can be replaced by a single-chip touch panel.

In this embodiment, the reflective film 13 is disposed above the first polarizing plate 12 with a gap therebetween. In other embodiments, the reflective film 13 only needs to be disposed above the first polarizing plate 12, and other layers may be interposed between the reflective film 13 and the first polarizing plate 11 or Direct contact is not particularly limited.

Example 4

FIG. 6 is a schematic diagram of a mirror display according to the embodiment, wherein the touch panel display 400 includes a display panel 11 , a first polarizer 12 is disposed on the display panel 11 , and a second The polarizing plate 12 ′ is disposed under the display panel 11 , a touch element 15 is disposed above the first polarizing plate 12 , a reflective film 13 is disposed on the touch element 15 , and a protective layer 14 . It is disposed on the reflective film 13. The display panel 11, the first polarizing plate 12, the second polarizing plate 12', the reflective film 13, and the protective layer 14 are as described above, so The description may be incorporated into the same application section herein, and the same description will not be repeated.

In this embodiment, the reflective film 13 is disposed between the touch element 15 and the protective layer 14 , and the touch element 15 is disposed above the first polarizing plate 12 with a gap therebetween. In other implementations, the touch element 15 only needs to be disposed above the first polarizing plate 12, and other layers may be interposed between the touch element 15 and the first polarizing plate 12, or Direct contact, no special restrictions.

According to the touch-sensitive mirror display disclosed in the above embodiments 2 to 4, the touch-sensitive mirror displays can be attached by an air-bonding method or a full lamination method. As shown in FIG. 7 , the touch-sensitive mirror display 500 can be completed by applying a sealant 56 to perform a word-fitting, and in other embodiments, a tape can also be used. Words fit. In addition, as shown in FIG. 8, the touch mirror display 500 can be completed by performing a full bonding using a molding compound 57.

The above embodiments 2 to 4 disclose a touch-sensitive mirror display including a touch element, so that the mirror display can simultaneously display information, specular reflection, and touch. Thereby, the information can be partially displayed on the mirror display and partially specularly reflected by the operation of the touch function. As shown in FIGS. 9A and 9B, the mirror display 600 can be divided into the display area A and the mirror area B during operation. ', the polarization direction of the second polarizer 12', which lines the backlight unit 16 emits light toward the display panel 11, when the light emitted by the backlight unit 16 through the second polarizing plate 12 parallel to the axis of penetration of light P ₁ The light enters the display panel 11, and the light P ₂ whose polarization direction is different from the direction of the transmission axis of the second polarizing plate 12' cannot enter the display area. Are connected, in the display region A, which is a portion corresponding to region A of the display panel 11, the display light P ₁ emitted through the first polarizer 12 and the reflective film 13 enters the observation test, so that the viewer can obtain the measured observation Display information. In the mirror area B, the corresponding display panel 11 does not emit display light (ie, displays a black screen). In this case, the polarization direction is different from the transmission axis outer boundary light P ₂ ' of the reflective film 13. It is reflected by the reflective film 13. At this time, the mirror area B only provides the function of specular reflection to reflect the external light P ₂ ', and the polarization direction is parallel to the transmission axis of the reflective film 13 in the light P ₁ ' It is possible to enter the display panel through the reflective film 13. However, in the mirror display 600, the position, shape, and area of the display area A and the mirror area B may be arbitrarily changed depending on the demand. For example, the display area A and the mirror area B can be controlled by a touch operation.

Example 5

FIG. 10 is a schematic diagram of a mirror display 700 according to the embodiment. The mirror display 700 includes a display panel 11 , a reflective layer 13 disposed on the display panel, and a protective layer 14 . It is disposed on the reflective layer 13. In this embodiment, the display panel 11 is an organic light emitting diode panel or a plasma display panel, so that the components of the first polarizing plate or the second polarizing plate are not provided.

Example 6

11 is a schematic diagram of a mirror touch display 700 provided in the embodiment, wherein the mirror display 700 includes a display surface. The board 11 and a reflective layer 13 are disposed above the display panel, and a protective layer 14 is disposed above the reflective layer 13 and a touch component 15 disposed on the reflective layer 13 and the protective layer. Between 14. In this embodiment, the display panel 11 is an organic light emitting diode panel or a plasma display panel, so that the components of the first polarizing plate or the second polarizing plate are not provided.

In this embodiment, the touch element 15 is disposed between the reflective film 13 and the protective layer 14 , and the reflective film 13 is disposed above the display panel 11 with a gap therebetween. In other embodiments, the reflective layer 13 only needs to be disposed above the display panel 11. The reflective layer 13 and the display panel 11 may be sandwiched with other layers, or may be directly contacted, and there is no special limits.

Example 7

FIG. 12 is a schematic diagram of a mirror touch display 700 according to the present embodiment. The mirror display 700 includes a display panel 11 and a touch component 15 disposed above the display panel 11 and a reflective layer. The 13 series is disposed on the display panel, and a protective layer 14 is disposed on the reflective layer 13. In this embodiment, the display panel 11 is an organic light emitting diode panel or a plasma display panel, so that the components of the first polarizing plate or the second polarizing plate are not provided.

In this embodiment, the reflective film 13 is disposed between the touch element 15 and the protective layer 14 , and the touch element 15 is disposed above the display panel 11 with a gap therebetween. In other implementations, the touch element 15 only needs to be disposed above the display panel, and other layers may be interposed between the touch element 15 and the display panel 11 . Or it can be directly contacted without special restrictions.

Example 8

In this embodiment, the mirror touch display prepared in Embodiment 6 is fully bonded by using a molding compound 57 to complete the touch mirror display 700. However, in the present invention, the manner of bonding the mirror display and the mirror touch display is not particularly limited, and it can be bonded by an air-bonding method or a full lamination method.

In addition, in a preferred embodiment of the present invention, the refractive index of different wavelengths can be adjusted by adjusting the inner layer N _L (the refractive index of the low refractive index film) and the N _H (the refractive index of the high refractive index film) inside the reflective film. After adjustment, the amount of reflection at different wavelengths after the reflection film reflects external light is obtained, so that the reflected light can be adjusted to present different color tastes.

In an embodiment of the present invention, when the reflective film reflects external light, the reflected light may be silver, and the reflected amount of the reflected light refers to when the red (R) wavelength is 630 nm; when the green (G) wavelength is When the blue light (B) wavelength is 450 nm, the ratio of the reflection amount of red light (R), green light (G), and blue light (B) is 0.84<G/B<1.09, and 0.84<R/B<1.06.

In another embodiment, when the reflective film reflects external light, the reflected light may be approximately champagne gold, and the reflected amount of the reflected light refers to when the red (R) wavelength is 630 nm; when the green (G) wavelength is When the blue light (B) wavelength is 450 nm, the ratio of the reflection amount of red light (R), green light (G), and blue light (B) is 1.19<G/B<16.82, 1.09<R/B<23.18.

Since the mirror display provided by the present invention can have both Display information, as well as specular reflection, and can also include touch functions, so it can be applied in a wide range of applications, for example, can be applied to any device including a display panel, such as a notebook computer, a camera, a camera , music players, mobile navigation devices, televisions, etc., as well as any device that includes mirrors. For example, as shown in FIGS. 14-17, the mirror display 800 provided by the present invention can be applied to a makeup mirror; an information bulletin wall; a vehicle rearview mirror (800, 800'); and a mirror installed in the elevator. To provide specular reflection and display information at the same time, and the observer can also operate the mirror display by using the touch function.

The above-mentioned embodiments are merely examples for convenience of description, and the scope of the claims is intended to be limited to the above embodiments.

11‧‧‧ display panel

12‧‧‧First polarizer

13‧‧‧Reflective film

100‧‧‧Mirror display

Claims (10)

A mirror display includes: a display panel; a reflective film disposed on the display panel, wherein the reflective film has a first transmission axis; wherein the mirror display emits a display light, the display light has a light output The direction is different from the light-emitting direction. When the external light illuminates the display panel, the reflective film reflects the external light in a polarization direction different from the first transmission axis direction. The mirror display of claim 1, further comprising a first polarizing plate having a second penetrating axis and an angle between the second penetrating axis and the first penetrating axis The system is greater than or equal to 0 degrees and less than 90 degrees. The mirror display of claim 2, wherein an angle between the second transmission axis of the first polarizer and the first transmission axis is greater than or equal to 0 degrees and less than 45 degrees. The mirror display of claim 1, wherein the reflective film reflects red light (R), green light (G), and blue light (B) in the external light after the external light is reflected. When the ratio of the amount of reflection is 0.84<G/B<1.09 and 0.84<R/B<1.06, the reflective film exhibits a silver tone; wherein the wavelength of the red light is 630 nm: the wavelength of the green light is 550 nm; The wavelength of blue light is 450 nm. The mirror display of claim 1, wherein the reflective film reflects red light (R), green light (G), and blue light (B) in the external light after the external light is reflected. The amount of reflection is 1.19<G/B<16.82, and 1.19<R/B<23.18, the reflective film exhibits a champagne gold hue; wherein the red light has a wavelength of 630 nm: the green light has a wavelength of 550 nm; and the blue light has a wavelength of 450 nm. A mirror display, comprising: a display panel, the display panel emits a display light, the display light has a light exiting direction; a reflective film is disposed on the display panel, wherein the reflective film has a first transmission axis; a protective layer disposed above the reflective film, the reflective film being disposed between the protective layer and the first polarizing plate; a touch component disposed between the protective layer and the display panel; wherein the mirror display emits a The display light has a light-emitting direction, and when the external light illuminates the display panel, the reflective film reflects the external light in a polarization direction different from the first transmission axis direction. The mirror display of claim 6, further comprising a first polarizing plate having a second penetrating axis and an angle between the second penetrating axis and the first penetrating axis The system is greater than or equal to 0 degrees and less than 90 degrees. The mirror display of claim 7, wherein an angle between the second transmission axis of the first polarizer and the first transmission axis is greater than or equal to 0 degrees and less than 45 degrees. The mirror display of claim 6, wherein when the reflective film reflects the external light, the red (R), green (G), and blue (B) light reflected in the external light is reflected. The amount of reflection is 0.84<G/B<1.09 and When 0.84 < R / B < 1.06, the reflective film exhibits a silver tone; wherein the red light has a wavelength of 630 nm: the green light has a wavelength of 550 nm; and the blue light has a wavelength of 450 nm. The mirror display of claim 6, wherein when the reflective film reflects the external light, the red (R), green (G), and blue (B) light reflected in the external light is reflected. When the reflectance ratio is 1.19<G/B<16.82, and 1.19<R/B<23.18, the reflective film exhibits a champagne gold hue; wherein the red light has a wavelength of 630 nm: the green light has a wavelength of 550 nm; And the wavelength of the blue light is 450 nm.