CN113253528A

CN113253528A - Array substrate, reflective display panel and reflective display device

Info

Publication number: CN113253528A
Application number: CN202110527603.7A
Authority: CN
Inventors: 薛兴皓; 康报虹
Original assignee: HKC Co Ltd; Mianyang HKC Optoelectronics Technology Co Ltd
Current assignee: HKC Co Ltd; Mianyang HKC Optoelectronics Technology Co Ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2021-08-13

Abstract

The invention provides an array substrate, a reflective display panel and a reflective display device, which relate to the technical field of display, and the array substrate comprises: the color filter comprises a first substrate base plate, a reflecting layer and a color resistance layer which are arranged in a stacked mode, wherein the color resistance layer is positioned on one side, far away from the first substrate base plate, of the reflecting layer; the reflecting layer is used for reflecting incident light, and the incident light is reflected by the reflecting layer to obtain reflected light; the color resistance layer comprises a plurality of types of color resistance units, the different types of color resistance units are used for performing different refraction on the reflected light and emitting the reflected light with corresponding colors, and the different types of color resistance units respectively correspond to different colors. In the array substrate, different types of color resistance units are used for performing different refraction on reflected light, so that the effect of emitting the reflected light with different colors is achieved, and the purpose of reducing the cost is achieved.

Description

Array substrate, reflective display panel and reflective display device

Technical Field

The invention belongs to the technical field of display, and particularly relates to an array substrate, a reflective display panel and a reflective display device.

Background

The display device may be classified into a transmissive type, a reflective type, and a transflective type according to the light source used. The reflective display device uses a front light source or ambient light as a light source, so that the power consumption is low and the eye is protected.

A conventional reflective display panel includes an array substrate and a color filter substrate, the array substrate is provided with a reflective pixel electrode as a reflective substrate, and the color filter substrate is provided with a Color Filter (CF) and a transparent common electrode as a transparent substrate. Thus, light is incident from the color filter substrate, is irradiated to the reflective pixel electrode, is reflected, and is emitted from the color filter substrate.

However, the cost of the color filter layer coated on the conventional color film substrate is still high, and thus a reflective display panel capable of reducing the cost is needed.

Disclosure of Invention

The embodiment of the invention provides an array substrate, a reflective display panel and a reflective display device, wherein in the array substrate, a color resistance layer comprising a plurality of color resistance units is additionally arranged on one side of a reflection layer, which is far away from a first substrate, so that the reflected light can be refracted differently by the color resistance units of different types, the effect of emitting the reflected light of different colors is achieved, and the purpose of reducing the cost is realized.

In a first aspect, an embodiment of the present invention provides an array substrate, including: the color filter comprises a first substrate base plate, a reflecting layer and a color resistance layer which are arranged in a stacked mode, wherein the color resistance layer is positioned on one side, far away from the first substrate base plate, of the reflecting layer;

the reflection layer is used for reflecting incident light, and the incident light is reflected by the reflection layer to obtain reflected light; the color resistance layer comprises a plurality of types of color resistance units, the different types of color resistance units are used for performing different refraction on the reflected light and emitting the reflected light with corresponding colors, and the different types of color resistance units respectively correspond to different colors.

The first aspect provides an array substrate, in this array substrate, increase the color resistance layer including a plurality of kinds of color resistance units on one side that the reflection stratum is kept away from first substrate base plate, carry out different refractions through making different kinds of color resistance units to the reverberation to reach the effect of the reverberation of different colours of emergence, be equal to the effect of colored filter layer, realize reduce cost's purpose.

With reference to the first aspect, the color resistance layer includes a red color resistance unit, a green color resistance unit, and a blue color resistance unit;

the red color resistance unit is used for refracting the reflected light and emitting red reflected light; the green color resistance unit is used for refracting the reflected light and emitting green reflected light; the blue color resistance unit is used for refracting the reflected light and emitting blue reflected light.

With reference to the first aspect, the color resist layer includes a first refraction layer, a second refraction layer, and a third refraction layer stacked in a thickness direction of the first substrate;

the first refraction layer is positioned on one side of the second refraction layer far away from the reflection layer, and the third refraction layer is positioned on one side of the second refraction layer close to the reflection layer;

the first refractive index corresponding to the first refractive layer is smaller than the first refractive index corresponding to the third refractive layer, and the first refractive index is larger than the second refractive index corresponding to the second refractive layer.

With reference to the first aspect, the first refractive index has a value range of [1.77,1.79], and the extinction coefficient corresponding to the first refractive layer has a value range of [0,0.01 ]; the value range of the second refractive index is [0.97,0.99], and the value range of the corresponding extinction coefficient of the second refractive layer is [6.66,6.68 ]; the value range of the third refractive index is [1.90,1.92], and the value range of the extinction coefficient corresponding to the third refractive index is [ -0.01,0.01 ].

With reference to the first aspect, the thickness of the first refractive layer ranges from [50nm,125nm ]; the thickness range of the second refraction layer is [4.5nm,6.5nm ]; the thickness of the third refraction layer is in a range of [60nm,130nm ].

With reference to the first aspect, the first refractive layer is made of indium tin oxide, the second refractive layer is made of aluminum, and the third refractive layer is made of indium vanadium oxide or a silicon nitride layer.

In a second aspect, an embodiment of the present invention provides a reflective display panel, including the array substrate provided in the first aspect or any possible implementation manner of the first aspect, and a liquid crystal layer located between the color film substrate and the array substrate.

With reference to the second aspect, the color film substrate includes a second substrate and a common electrode layer, which are stacked;

the common electrode layer is positioned on one side of the second substrate base plate close to the array base plate.

In a third aspect, embodiments of the present invention provide a reflective display device, including the liquid crystal display panel as provided in the second aspect.

With reference to the third aspect, the reflective display device further includes: a polarizer and a retarder;

the delay piece is positioned on one side of the second substrate base plate far away from the common electrode layer; the polarizer is positioned on one side of the retardation plate far away from the second substrate base plate; the retarder is used for converting linearly polarized light into circularly polarized light.

The invention provides an array substrate, a reflective display panel and a reflective display device, wherein in the array substrate, a color resistance layer comprising a plurality of color resistance units is additionally arranged on one side of a reflection layer far away from a first substrate, and different types of color resistance units are used for carrying out different refractions on reflected light so as to achieve the effect of emitting the reflected light with different colors, which is equal to the effect of a color filter layer, and the purpose of reducing the cost is realized.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic structural diagram of a reflective display device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an array substrate according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another array substrate according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of another array substrate according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of another array substrate according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a color resist layer according to an embodiment of the present invention;

FIG. 7 is a table of parameters for the color resist layer provided in FIG. 6;

FIG. 8 is a schematic structural diagram of a reflective display panel according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a reflective display device according to an embodiment of the present invention.

Description of reference numerals:

1-a frame; 2-cover glass; 30-a reflective display panel; 31-an array substrate; 32-a color film substrate; 33-a liquid crystal layer; 4-a circuit board; 5-front-mounted light source components; 10-reflective display devices; a first substrate base plate; 120-a reflective layer; 130-a color resist layer; 131-a red color resistance unit; 132-green color resistance unit; 133-blue color resistance unit; 1310 — a first refractive layer; 1320-second refractive layer; 1330-a third refractive layer; 140-a protective layer; 150-black matrix; 160-a flat layer; 210-a second substrate base plate; 220 a common electrode layer; 34-a retarder; 35-polarizer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the embodiments of the present invention, "/" indicates an OR meaning unless otherwise specified, for example, A/B may indicate A or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone.

In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present embodiment, "a plurality" means two or more unless otherwise specified.

The directional terms "left", "right", "upper" and "lower" are defined relative to the schematically-placed orientation of the display assembly in the drawings, and it is to be understood that these directional terms are relative concepts that are used for descriptive and clarity relative to each other and that may vary accordingly depending on the orientation in which the color filter substrate or display device is placed.

With the development of display technology, liquid crystal display technology has been widely applied to various electronic devices. Electronic devices that display using liquid crystal display technology include reflective display devices, which may be classified into transmissive, reflective, and transflective types according to the light source used. The reflective display device uses a front light source or ambient light as a light source, so that the power consumption is low and the eye is protected.

The reflective display device generally includes a reflective display panel and a driving device for driving the reflective display panel, and the reflective display panel includes an array substrate, a color filter substrate, and a liquid crystal layer disposed between the array substrate and the color filter substrate. The embodiment of the invention provides an array substrate which is applied to a reflective display panel in electronic equipment.

The electronic device can be a plurality of different types of electronic devices such as a smart phone, a tablet computer, an electronic reader, a vehicle-mounted computer, a navigator, a digital camera, a smart television and a smart wearable device. The embodiment of the present invention does not limit this.

Fig. 1 is a schematic structural diagram of a reflective display device according to an exemplary embodiment of the present invention. As shown in fig. 1, the main structure of the reflective display device includes a frame 1, a cover glass 2, a reflective display panel 30, a circuit board 4, a front-mounted light source section 5, and other electronic components including a camera and the like.

As shown in fig. 1, the reflective display panel 30 includes an array substrate 31, a color filter substrate 32, and a liquid crystal layer 33 disposed between the array substrate 31 and the color filter substrate 32. The array substrate 31 and the color film substrate 32 are bonded together by the sealant, so that the liquid crystal layer 33 is limited in the region surrounded by the sealant. The color filter layer is disposed on the color film substrate 32.

The longitudinal section of the frame 1 is U-shaped, the reflective display panel 30, the circuit board 4 and other electronic accessories including a camera head and the like are arranged in the frame 1, the front-mounted light source component 5 is positioned between the reflective display panel 30 and the frame 1, the front-mounted light source component 5 is positioned on one side of the reflective display panel 30 far away from the front-mounted light source component 5, and the cover plate 2 is positioned on one side of the front-mounted light source component 5 far away from the reflective display panel 30. The cover plate 2 may be, for example, transparent glass.

On this basis, the array substrate 31 generally includes a first substrate 110 and a reflective layer 120, which are stacked, and the reflective layer 120 is located on a side of the first substrate 110 close to the liquid crystal layer.

The display principle of the reflective display device of fig. 1 is as follows: the light emitted from the front-mounted light source 5 and a part of the ambient light are incident on the color filter substrate 32, and are filtered by the color filter layer on the color filter substrate 32 to form red, green and blue lights. The tricolor light is incident on the reflecting layer 120 to form tricolor reflected light, and then the tricolor reflected light is emitted from one side of the cover plate after being modulated by the liquid crystal layer to form a color image.

The light path propagation sequence is as follows: the front light source unit 5 emits light through the color filter substrate 31, the liquid crystal layer 33, the reflective layer 120, the liquid crystal layer 33, the color filter substrate 32, the front light source unit 5, and the cover plate 2 in this order.

The front light source component 5 may be any front light source component or module known to those skilled in the art, and may be, for example, a light guide plate and light sources (such as LEDs, etc.) located at two ends of the light guide plate.

In view of this, embodiments of the present invention provide an array substrate, in which a color resistance layer including a plurality of color resistance units is added on a side of a reflection layer away from a first substrate, and different types of color resistance units perform different refractions on reflected light, so as to achieve an effect of emitting reflected light of different colors, which is equivalent to an effect of a color filter layer, and achieve a purpose of reducing cost.

The structure of the array substrate according to the present invention will be described in detail with reference to fig. 2 to 5.

Fig. 2 is a schematic structural diagram of an array substrate 31 provided in the present invention, fig. 3 is a schematic structural diagram of another array substrate 31 provided in the present invention, fig. 4 is a schematic structural diagram of another array substrate 31 provided in the present invention, and fig. 5 is a schematic structural diagram of another array substrate 31 provided in the present invention.

As shown in fig. 2 to 5, the present invention provides an array substrate 31, including: the color filter comprises a first substrate 110, a reflecting layer 120 and a color resistance layer 130 which are arranged in a stacked mode, wherein the color resistance layer 130 is located on one side, far away from the first substrate 110, of the reflecting layer 120.

The reflective layer 120 is configured to reflect incident light, and the incident light is reflected by the reflective layer 120 to obtain reflected light; the color resist layer 130 includes a plurality of types of color resist units, different types of color resist units are used for differently refracting the reflected light and emitting the reflected light with corresponding colors, and the different types of color resist units respectively correspond to different colors.

It is understood that the first substrate 110 may be a transparent substrate, made of quartz, glass, or transparent plastic, etc.

It should be understood that the color resist layer 130 on the side of the reflective layer 120 away from the first substrate 110 means: as shown in fig. 2, the first substrate 110, the reflective layer 120, and the color resist layer 130 are sequentially arranged along the thickness direction of the first substrate 110.

The first substrate 110 and the reflective layer 120 may be in direct contact or other film layers may be further added therebetween, and the reflective layer 120 and the color-resist layer 130 may also be in direct contact or other film layers may be further added therebetween, which is not limited in the present invention.

Here, the reflective layer 120 may be a metal layer, which may be shared with a metal layer of the pixel electrode, that is, the metal layer may be used as the pixel electrode and may be used as the reflective layer 120 for reflection. The material of the reflective layer 120 may be Aluminum (AL), and of course, the material of the reflective layer 120 may also be other materials, for example, Indium Tin Oxide (ITO), which is not limited in this embodiment of the invention.

It should be understood that the color resistance layer 130 includes a plurality of kinds of color resistance units, and the colors corresponding to the different kinds of color resistance units are different. For example, when the color resistance layer 130 includes two color resistance units, the two color resistance units correspond to different colors, respectively, and the reflective display device is a two-color display device. When the color resistance layer 130 includes three color resistance units, the colors of the three color resistance units are different, and the reflective display device is a three-color display device. When the color resistance layer 130 includes four color resistance units, the four color resistance units are respectively a four-color display device.

It should be understood that the color resist layer of the present invention primarily utilizes the principle of refraction to achieve screening of reflected light relative to existing color filter layers. Here, because light is an electromagnetic wave, interference phenomenon can appear under certain conditions, from this, when the thickness of refracting layer is close with the wavelength of light, the reverberation of the upper and lower surface of refracting layer will take place to interfere, makes the light of part wavelength superpose or cancel, so, can be through designing different kinds of color resistance unit for the reverberation of the upper and lower surface of color resistance unit takes place different interferences, thereby the light of different wave bands is emergent, and then can design the reverberation of different colours.

For example, the first type of color resist unit emits red reflected light, the second type of color resist unit emits green reflected light, and the third type of color resist unit emits blue reflected light.

It is understood that the cost of the array substrate can be reduced because the color filter layer is omitted.

The invention provides an array substrate, in the array substrate, a color resistance layer comprising a plurality of color resistance units is added on one side of a reflection layer far away from a first substrate, reflected light is subjected to different refraction through different color resistance units, so that the effect of emitting the reflected light with different colors is achieved, the effect is equivalent to the effect of a color filter layer, and the purpose of reducing the cost is achieved.

On this basis, it can be understood that, in order to drive the pixel electrode (reflective layer), an array structure such as a thin film transistor is usually further disposed on the side of the first substrate 110 close to the reflective layer 120, and in order to protect the array structure and avoid unnecessary interference, as shown in fig. 3 to 5, a protective layer 140 is further disposed on the side of the reflective layer 120 close to the first substrate 110.

Alternatively, as shown in fig. 2 to 5, the color resistance layer 130 includes a red color resistance unit 131, a green color resistance unit 132, and a blue color resistance unit 133.

The red color resistance unit 131 is used for refracting the reflected light and emitting red reflected light; the green color resistance unit 132 is used for refracting the reflected light and emitting green reflected light; the blue color resistance unit 133 refracts the reflected light to emit blue reflected light.

It is to be understood that the color resistance units of three colors are formed by the color resistance layer 130, so that three-color display is possible.

Here, as shown in fig. 4 and 5, in order to prevent light from interfering with each other among the red color resistance unit 131, the green color resistance unit 132, and the blue color resistance unit 133, a black matrix 150 is further provided between the color resistance units to shield light.

Alternatively, as a possible implementation manner, fig. 6 shows a schematic structural diagram of the color resistance layer provided by the present invention, and as shown in fig. 6, the color resistance layer 130 includes a first refractive layer 1310, a second refractive layer 1320, and a third refractive layer 1330 which are stacked in a thickness direction of the first substrate 110.

It should be understood that the red color resistance unit 131, the green color resistance unit 132, and the blue color resistance unit 133 included in the color resistance layer 130 each include a first refractive layer 1310, a second refractive layer 1320, and a third refractive layer 1330 which are disposed in a stacked manner.

The first refractive layer 1310 is located on a side of the second refractive layer 1320 far from the reflective layer 120, and the third refractive layer 1330 is located on a side of the second refractive layer 1320 near the reflective layer 120. That is, the first refractive layer 1310, the second refractive layer 1320, and the third refractive layer 1330 are arranged in an order that the three refractive layers are located on the same side of the reflective layer 120, and the order is: the third refractive layer 1330 is adjacent to the reflective layer 120 with respect to the first and second

refractive layers

1310 and 1320, and the second refractive layer 1320 is interposed between the first and third

refractive layers

1310 and 1330.

The first refractive index corresponding to the first refractive layer 1310 is smaller than the first refractive index corresponding to the third refractive layer 1330, and the first refractive index is greater than the second refractive index corresponding to the second refractive layer 1320.

Optionally, as a possible implementation manner, a value range of the first refractive index is [1.77,1.79], and a value range of an extinction coefficient corresponding to the first refractive layer 1310 is [0,0.01 ]; the second refractive index has a value range of [0.97,0.99], and the extinction coefficient corresponding to the second refractive layer 1320 has a value range of [6.66,6.68 ]; the third refractive index is in the range of [1.90,1.92], and the extinction coefficient corresponding to the third refractive layer 1330 is in the range of [ -0.01,0.01 ].

Illustratively, the first refractive layer corresponds to a first refractive index of 1.78705 and an extinction coefficient of 0.00939; the second refractive index corresponding to the second refractive layer is 0.97914, and the extinction coefficient is 6.67718; the third refractive index of the third refractive layer is 1.91018, and the extinction coefficient is 0.

Optionally, as a possible implementation manner, the thickness of the first refractive layer 1310 ranges from [50nm,125nm ]; the thickness of the second refraction layer 1320 ranges from [4.5nm,6.5nm ]; the thickness of the third refractive layer 1330 is in the range of [60nm,130nm ].

Illustratively, fig. 7 shows a parameter table of the color resist layer provided in fig. 6. As shown in FIG. 7, the first refraction layer 1310 has a film thickness of 83.52nm, the second refraction layer 1320 has a film thickness of 6.15nm, and the third refraction layer 1330 has a film thickness of 103.43nm in the corresponding region of the blue color-resisting unit.

The film thickness of the first refraction layer 1310 in the corresponding region of the green color resistance unit is 121.39nm, the film thickness of the second refraction layer 1320 is 4.97nm, and the film thickness of the third refraction layer 1330 is 127.26 nm.

The film thickness of the first refraction layer 1310 in the region corresponding to the red color resistance unit is 53.15nm, the film thickness of the second refraction layer 1320 is 5.53nm, and the film thickness of the third refraction layer 1330 is 65.34 nm.

In addition, in order to avoid the color resistance units with different thicknesses from affecting the liquid crystal, as shown in fig. 6, a gentle layer 160 may be added on the side of the color resistance layer 130 close to the liquid crystal layer.

Alternatively, as a possible implementation manner, the material of the first refractive layer 1310 is indium tin oxide, the material of the second refractive layer 1320 is aluminum, and the material of the third refractive layer 1330 is an indium vanadium oxide layer or a silicon nitride layer.

It is understood that the refractive layer may be sequentially deposited on the reflective layer 120 by physical vapor deposition or chemical vapor deposition, with corresponding materials and thicknesses.

The materials of the refraction layer are common materials in the liquid crystal display technology, and compared with the prior art, the cost for redeveloping a new filter material can be saved.

Fig. 8 is a schematic structural diagram of a reflective display panel provided in the present invention, and as shown in fig. 8, the reflective display panel 30 includes: the liquid crystal display panel comprises a color film substrate 32, an array substrate 31 and a liquid crystal layer 33, wherein the color film substrate 32 and the array substrate 31 are arranged oppositely, and the liquid crystal layer 33 is located between the color film substrate 32 and the array substrate 31.

Optionally, as a possible implementation manner, as shown in fig. 8, the color filter substrate 32 includes a second substrate 210 and a common electrode layer 220, which are stacked.

The common electrode layer 220 is located on one side of the second substrate base plate 210 close to the array base plate 31.

It should be understood that the common electrode layer 220 may be laid in a whole layer, and the material of the common electrode layer 220 may be indium tin oxide.

The beneficial effects of the reflective display panel provided by the embodiment of the invention are the same as those of the array substrate, and are not described herein again.

Fig. 9 is a schematic structural diagram of a reflective display device according to the present invention, and as shown in fig. 9, the reflective display device 10 includes: such as the reflective display panel 30 described above.

Optionally, as a possible implementation manner, as shown in fig. 9, the reflective display device 10 further includes: a polarizer 35 and a retarder 34.

The retardation plate 34 is located on the side of the second substrate 210 away from the common electrode layer 220; the polarizer 35 is located on the side of the retardation plate 34 away from the second substrate 210; the retarder 34 serves to convert linearly polarized light into circularly polarized light.

It is to be understood that, as shown in fig. 8, the reflective display device further includes a front type light source part 5, and the front type light source part 5 in the reflective display device is located on the side of the polarizer 35 away from the second substrate 210. Of course, the reflective display device may further include other components, and reference may be made to the structure of the reflective display device shown in fig. 1, which is not described herein again.

The beneficial effects of the reflective display device provided by the embodiment of the invention are the same as those of the array substrate, and are not repeated herein.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims

1. An array substrate, comprising: the color filter comprises a first substrate base plate, a reflecting layer and a color resistance layer which are arranged in a stacked mode, wherein the color resistance layer is positioned on one side, far away from the first substrate base plate, of the reflecting layer;

2. The array substrate of claim 1, wherein the color resistance layer comprises a red color resistance unit, a green color resistance unit and a blue color resistance unit;

3. The array substrate of claim 1 or 2, wherein the color resistance layer comprises a first refractive layer, a second refractive layer and a third refractive layer which are stacked in a thickness direction of the first substrate;

4. The array substrate of claim 3, wherein the first refractive index has a value in a range of [1.77,1.79], and the first refractive layer has a corresponding extinction coefficient in a range of [0,0.01 ]; the value range of the second refractive index is [0.97,0.99], and the value range of the corresponding extinction coefficient of the second refractive layer is [6.66,6.68 ]; the value range of the third refractive index is [1.90,1.92], and the value range of the extinction coefficient corresponding to the third refractive index is [ -0.01,0.01 ].

5. The array substrate of claim 4, wherein the thickness of the first refractive layer is in a range of [50nm,125nm ]; the thickness range of the second refraction layer is [4.5nm,6.5nm ]; the thickness of the third refraction layer is in a range of [60nm,130nm ].

6. The array substrate of claim 3, wherein the first refractive layer is made of indium tin oxide, the second refractive layer is made of aluminum, and the third refractive layer is made of indium vanadium oxide or silicon nitride.

7. A reflective display panel, comprising: the liquid crystal display panel comprises a color film substrate, an array substrate according to any one of claims 1 to 6 and a liquid crystal layer, wherein the color film substrate and the array substrate are arranged oppositely, and the liquid crystal layer is positioned between the color film substrate and the array substrate.

8. The reflective display panel according to claim 7, wherein the color filter substrate comprises a second substrate and a common electrode layer which are stacked;

9. A reflective display device, comprising: the reflective display panel according to claim 7 or 8.

10. A reflective display device according to claim 9, further comprising: a polarizer and a retarder;