阅读说明：本技术 显示装置及其制备方法和智能魔镜 (Display device, preparation method thereof and intelligent magic mirror ) 是由 魏伟 于 2020-05-18 设计创作，主要内容包括：本公开实施例提供了一种显示装置,包括：显示面板和位于所述显示面板的出光侧的功能基板,所述功能基板包括：透明基板,配置为其远离所述显示面板的一侧内表面具有预设全反射角；镜面反射层,位于透明基板一侧；全息膜层,位于透明基板和镜面反射层之间,配置为使得传播方向朝向所述透明基板且入射角处于预设入光角范围内的入射光中部分光发生衍射并以预设出光角射入至所述透明基板内,所述预设出光角大于或等于所述预设全反射角。本公开实施例还提供了一种显示装置的制备方法和智能魔镜。(An embodiment of the present disclosure provides a display device, including: display panel with be located the function base plate of display panel's light-emitting side, the function base plate includes: the transparent substrate is configured to be provided with a preset total reflection angle on the inner surface of one side far away from the display panel; the mirror reflection layer is positioned on one side of the transparent substrate; the holographic film layer is located between the transparent substrate and the mirror reflection layer and is configured to enable the propagation direction to face the transparent substrate, the incident light with the incident angle within a preset incident light angle range is split in the middle of the incident light to be diffracted, and the incident light is incident into the transparent substrate at a preset emergent light angle, and the preset emergent light angle is larger than or equal to the preset total reflection angle. The embodiment of the disclosure also provides a preparation method of the display device and the intelligent magic mirror.)

1. A display device, comprising: display panel with be located the function base plate of display panel's light-emitting side, the function base plate includes:

the transparent substrate is configured to be provided with a preset total reflection angle on the inner surface of one side far away from the display panel;

the mirror reflection layer is positioned on one side of the transparent substrate;

the holographic film layer is located between the transparent substrate and the mirror reflection layer and is configured to enable the propagation direction to face the transparent substrate, the incident light with the incident angle within a preset incident light angle range is split in the middle of the incident light to be diffracted, and the incident light is incident into the transparent substrate at a preset emergent light angle, and the preset emergent light angle is larger than or equal to the preset total reflection angle.

2. The display device according to claim 1, wherein a light absorbing layer is formed on a side surface of the transparent substrate.

3. The display device according to claim 1, wherein an upper limit of the predetermined incident light angle range is greater than or equal to the predetermined total reflection angle.

4. The display device according to claim 1, wherein a touch substrate and a cover plate are sequentially disposed on a light exit side of the display panel and in a direction away from the display panel, and the touch substrate comprises: the touch control display panel comprises a first substrate and a touch control function structure positioned on one side, close to the display panel, of the first substrate;

the mirror reflection layer and the holographic film layer are positioned between the first substrate and the cover plate, and the holographic film layer is closer to the cover plate;

the transparent substrate is the cover plate.

5. The display device according to claim 1, wherein a touch substrate is disposed on a light exit side of the display panel, the touch substrate comprising: the touch control display panel comprises a first substrate and a touch control function structure positioned on one side, close to the display panel, of the first substrate;

the mirror reflection layer and the holographic film layer are positioned on one side, far away from the display panel, of the first substrate base plate, and the holographic film layer is closer to the first substrate base plate;

the transparent substrate is the first substrate.

6. A display device as claimed in any one of claims 1 to 5, wherein a side of the functional substrate remote from the display panel is provided with an encapsulation layer comprising: a protective and/or waterproof layer;

when the packaging layer simultaneously comprises the protective layer and the waterproof layer, the waterproof layer is positioned on one side, far away from the display panel, of the protective layer.

7. An intelligent magic mirror, comprising: a display device as claimed in any one of the preceding claims 1-6.

8. A method of manufacturing a display device as claimed in any one of claims 1 to 8, comprising:

preparing a display panel;

preparing a functional substrate, the functional substrate comprising: the holographic film layer is arranged between the transparent substrate and the mirror reflection layer, the holographic film layer is configured to enable the middle part of incident light, the propagation direction of which faces the transparent substrate and the incidence angle of which is within a preset incident light angle range, to be split and diffracted and to be emitted into the transparent substrate at a preset light emitting angle, and the preset light emitting angle is larger than or equal to the preset total reflection angle;

and assembling the functional substrate on the light emergent side of the display panel.

9. A producing method according to claim 8, wherein the step of forming the holographic film layer in the process of producing the functional substrate includes:

forming a photosensitive material layer on one side of the second substrate base plate;

the object light and the reference light are used for irradiating the photosensitive material layer, the interference of the object light and the reference light is utilized to enable the photosensitive material layer to record the propagation direction of the interference light of the photosensitive material layer, wherein the included angle between the object light and the plane where the photosensitive material layer is located is maintained at the preset light-emitting angle, and the included angle between the reference light and the plane where the photosensitive material layer is located is gradually increased to the upper limit value of the preset light-emitting angle range from the lower limit value of the preset light-emitting angle range.

10. The method according to claim 9, wherein the transparent substrate is disposed on a side of the holographic film layer away from the second substrate, and the specular reflection layer is disposed on a side of the second substrate away from the holographic film layer during the process of preparing the functional substrate.

Technical Field

The invention relates to the technical field of display, in particular to a display device, a manufacturing method thereof and an intelligent magic mirror.

Background

The intelligent magic mirror is a multifunctional terminal device integrating mirror function, display function and interaction function. The intelligent magic mirror is a common mirror in a state that the intelligent magic mirror is not started, when the system is powered on and started, the intelligent magic mirror can sense the arrival of people and automatically wake up a screen, and at the moment, the intelligent magic mirror becomes an intelligent display screen and can perform various interactions with a user. In practical application, the problem of serious ghost image is found when the intelligent magic mirror is used as an intelligent display screen.

Disclosure of Invention

The invention aims to at least solve one of the technical problems in the prior art, and provides a display device, a preparation method thereof and an intelligent magic mirror.

In a first aspect, an embodiment of the present disclosure provides a display device, including: display panel with be located the function base plate of display panel's light-emitting side, the function base plate includes:

the transparent substrate is configured to be provided with a preset total reflection angle on the inner surface of one side far away from the display panel;

the mirror reflection layer is positioned on one side of the transparent substrate;

the holographic film layer is located between the transparent substrate and the mirror reflection layer and is configured to enable the propagation direction to face the transparent substrate, the incident light with the incident angle within a preset incident light angle range is split in the middle of the incident light to be diffracted, and the incident light is incident into the transparent substrate at a preset emergent light angle, and the preset emergent light angle is larger than or equal to the preset total reflection angle.

In some embodiments, the side of the transparent substrate is formed with a light absorbing layer.

In some embodiments, an upper limit of the predetermined incoming light angle range is greater than or equal to the predetermined total reflection angle.

In some embodiments, a touch substrate and a cover plate are sequentially disposed on a light emitting side of the display panel and in a direction away from the display panel, and the touch substrate includes: the touch control display panel comprises a first substrate and a touch control function structure positioned on one side, close to the display panel, of the first substrate;

the mirror reflection layer and the holographic film layer are positioned between the first substrate and the cover plate, and the holographic film layer is closer to the cover plate;

the transparent substrate is the cover plate.

In some embodiments, a touch substrate is disposed on a light emitting side of the display panel, and the touch substrate includes: the touch control display panel comprises a first substrate and a touch control function structure positioned on one side, close to the display panel, of the first substrate;

the mirror reflection layer and the holographic film layer are positioned on one side, far away from the display panel, of the first substrate base plate, and the holographic film layer is closer to the first substrate base plate;

the transparent substrate is the first substrate.

One side that the function base plate kept away from display panel is provided with the encapsulation layer, the encapsulation layer includes: a protective and/or waterproof layer;

when the packaging layer simultaneously comprises the protective layer and the waterproof layer, the waterproof layer is positioned on one side, far away from the display panel, of the protective layer.

In a second aspect, an embodiment of the present disclosure further provides an intelligent magic mirror, including: a display device as provided in the first aspect.

In a third aspect, an embodiment of the present disclosure further provides a method for manufacturing a display device, which may be used to manufacture the display device in the first aspect, including:

preparing a display panel;

preparing a functional substrate, the functional substrate comprising: the holographic film layer is arranged between the transparent substrate and the mirror reflection layer, the holographic film layer is configured to enable the middle part of incident light, the propagation direction of which faces the transparent substrate and the incidence angle of which is within a preset incident light angle range, to be split and diffracted and to be emitted into the transparent substrate at a preset light emitting angle, and the preset light emitting angle is larger than or equal to the preset total reflection angle;

and assembling the functional substrate on the light emergent side of the display panel.

In some embodiments, the step of forming the holographic film layer in the process of preparing the functional substrate comprises:

forming a photosensitive material layer on one side of the second substrate base plate;

the object light and the reference light are used for irradiating the photosensitive material layer, the interference of the object light and the reference light is utilized to enable the photosensitive material layer to record the propagation direction of the interference light of the photosensitive material layer, wherein the included angle between the object light and the plane where the photosensitive material layer is located is maintained at the preset light-emitting angle, and the included angle between the reference light and the plane where the photosensitive material layer is located is gradually increased to the upper limit value of the preset light-emitting angle range from the lower limit value of the preset light-emitting angle range.

In some embodiments, the transparent substrate is disposed on a side of the holographic film layer away from the second substrate, and the specular reflection layer is disposed on a side of the second substrate away from the holographic film layer.

Drawings

Fig. 1 is a schematic structural diagram of an intelligent magic mirror related to the related art;

FIG. 2 is a schematic diagram of a light path of the intelligent magic mirror shown in FIG. 1 when used as an intelligent display screen;

fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the disclosure;

FIG. 4 is a schematic structural diagram of a functional substrate of the display panel shown in FIG. 3;

FIG. 5 is a schematic view of another structure of the functional substrate in the display panel shown in FIG. 3;

FIG. 6 is a schematic diagram of an optical path of light rays emitted from the display panel to the functional substrate shown in FIG. 4;

FIG. 7 is a schematic diagram of an optical path of light emitted from the display panel to the functional substrate shown in FIG. 5;

fig. 8 is a schematic structural diagram of another display device provided in the embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of another display device provided in the embodiment of the present disclosure;

fig. 10 is a flowchart of a method for manufacturing a display device according to an embodiment of the present disclosure;

FIG. 11 is a flowchart of an alternative implementation of implementing step S2 in the embodiment of the present disclosure;

fig. 12 is a flowchart of another alternative implementation manner for implementing step S2 in the embodiment of the present disclosure.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, a display device, a manufacturing method thereof, and an intelligent magic mirror provided by the present invention are described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an intelligent magic mirror related to the related art, and as shown in fig. 1, the intelligent magic mirror includes a display panel 11, a touch substrate 12 located on a light-emitting side of the display panel 11, a mirror reflection layer 13, and a cover plate 14.

When the display panel 11 does not display, the mirror reflection layer 13 in the intelligent magic mirror can perform mirror reflection, and the intelligent magic mirror is used as a mirror; when the display panel 11 displays, light emitted from the display panel 11 sequentially passes through the touch substrate 12, the specular reflection layer 13 and the cover plate 14 and is emitted, the intelligent magic mirror is used as an intelligent display screen, and a user can realize interaction based on the touch substrate 12.

Fig. 2 is a schematic diagram of a light path of the intelligent magic mirror shown in fig. 1 when used as an intelligent display screen, as shown in fig. 2, taking a part of light emitted from a point a on a display panel 11 as an example, the part of light 1 sequentially passes through a touch substrate 12 and a specular reflection layer 13 and then is emitted into a cover plate 14, after the light 1 reaches a surface of the cover plate 14 far away from the display panel 11, part of light is refracted out of the cover plate 14 to form refracted light 2, another part of light is reflected on the surface to form reflected light 3, and the reflected light 3 is emitted to the specular reflection layer 13 and is reflected again on the surface of the specular reflection layer 13 to form reflected light 4; after the reflected light 4 reaches the surface of the cover plate 14 on the side far away from the display panel 11, part of the light is refracted out of the cover plate 14 to form refracted light 5; both the refracted ray 2 and the refracted ray 5 will be observed by the human eye, i.e. the human eye will observe the primary image a' and the ghost image a ", i.e. a ghost image will appear.

In the related art, taking as an example that the light transmittance at the surface of the cover plate 14 on the side away from the specular reflection layer 13 at the light incident angle a is m% and the reflectance is 1-m%, and the light transmittance of the reflection layer 13 is n% and the reflectance is 1-n%, m and n are both greater than 0 and less than 1, for example. Assuming that the brightness when the light 1 reaches the surface of the cover plate 14 far from the display panel 11 is Q, the brightness of the light 2 to the light 5 is as follows:

the brightness of ray 2 is: q is m;

the brightness of the light ray 3 is: q (1-m);

the brightness of the light 4 is: q (1-m) 1-n;

the brightness of the light ray 5 is: q (1-m) m (1-n);

the luminance ratio of light 2 to light 5 is:

the smaller the ratio of the brightness corresponding to the refracted ray 2 to the brightness corresponding to the refracted ray 5 is (the smaller the contrast between the pixel a' and the image a ″), the more obvious the ghost effect is. In addition, the larger the viewing angle of the user, the larger the distance between the image a' and the image a ", and the more obvious the ghost effect.

In order to solve the problem of double images in the related art, the technical scheme of the disclosure provides a display device, a manufacturing method thereof and an intelligent magic mirror.

Fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the disclosure, fig. 4 is a schematic structural diagram of a functional substrate in the display panel shown in fig. 3, and fig. 5 is another schematic structural diagram of the functional substrate in the display panel shown in fig. 3, as shown in fig. 3 to 5, the display device includes: display panel 11 and the functional substrate 21 that is located the light-emitting side of display panel 11, functional substrate 21 includes: the transparent substrate 16 is configured such that an inner surface of a side thereof away from the display panel 11 has a predetermined total reflection angle; the specular reflection layer 13 is positioned on one side of the transparent substrate 16; the holographic film layer 15 is located between the transparent substrate 16 and the specular reflection layer 13, and is configured to diffract and inject the central split light of the incident light with the propagation direction facing the transparent substrate 16 and the incident angle within the preset incident light angle range into the transparent substrate 16 at a preset light exit angle, where the preset light exit angle is greater than or equal to the preset total reflection angle.

The predetermined total reflection angle of the inner surface of the side of the transparent substrate 16 far away from the display panel 11 is determined by the material of the transparent substrate 16 and the material of the medium contacting the surface of the side of the transparent substrate 16 far away from the display panel 11; the refractive index of the medium contacting the surface of the transparent substrate 16 away from the display panel 11 should be smaller than the refractive index of the transparent substrate 16. In some embodiments, the transparent substrate 16 is a glass substrate.

The specular reflection layer 13 is a film layer having a transflective function, that is, the specular reflection layer 13 not only reflects light but also transmits light (the specular reflection layer 13 has a certain light transmittance). In some embodiments, the specular reflective layer 13 is made of a non-metallic reflective material. Illustratively, the specular reflection layer 13 is formed by alternately laminating a high refractive index titanium dioxide layer and a low refractive index silicon dioxide layer, and can achieve a semi-transparent and semi-reflective effect.

The principle of vanishing in the present disclosure will be described in detail below with reference to the accompanying drawings. For convenience of description, two directions "up" and "down" are introduced in the description of the embodiments of the present disclosure, with reference to the display panel 11, a direction located on the light emitting side of the display panel 11 and away from the display panel 11 in the drawings is referred to as "up", and a direction located on the light emitting side of the display panel 11 and close to the display panel 11 is referred to as "down".

In the embodiment of the present disclosure, the functional substrate 21 includes two stacked layers of the transparent substrate 16, the specular reflection layer 13, and the holographic film layer 15: 1) referring to fig. 4, the transparent substrate 16, the holographic film layer 15 and the specular reflection layer 13 are arranged from top to bottom in sequence; 2) referring to fig. 5, the specular reflection layer 13, the holographic film layer 15 and the transparent substrate 16 are arranged from top to bottom.

Fig. 6 is a schematic diagram of a light path of light rays in the display panel when the light rays are incident into the functional substrate shown in fig. 4, and for convenience of description, changes of a propagation angle caused by refraction of the light rays at an interface between the transparent substrate 16 and the holographic film layer 15 and an interface between the holographic film layer 15 and the specular reflection layer 13 are not considered.

The light 1 ' emitted from the display panel 11 passes through the specular reflection layer 13 and is emitted to the holographic film layer 15 at an incident angle a (assuming that the incident angle a is smaller than the predetermined total reflection angle P and is within the predetermined incident angle range), at this time, a part of the light 1 ' is transmitted in the original propagation direction to form light 2 ', and another part of the light 1 ' is diffracted by the holographic film layer 15 and is emitted to the transparent substrate 16 at a predetermined emergent angle b to form light 3 '; because the preset light-emitting angle b is greater than the preset total reflection angle P, the light 3 'is totally reflected on the inner surface of the transparent substrate 16 far away from the display panel to form a light 4'; meanwhile, when the light 2 'reaches the inner surface of the side of the transparent substrate far away from the display panel, part of the light is refracted to form light 5', the other part of the light is reflected to form light 6 ', the light 6' passes through the holographic film layer 15 (the light far away from the transparent substrate 16 in the propagation direction does not diffract when passing through the holographic film layer 15) and then reaches the specular reflection layer 13, and is reflected on the specular reflection layer 13 to form light 7 ', the light 7' emits towards the holographic film layer 1 at an incident angle a, at the moment, part of the light 7 'is transmitted in the original propagation direction to form light 8', the other part of the light 7 'is diffracted under the action of the holographic film layer 15, and enters the transparent substrate 16 at a preset light emitting angle b to form light 10'; because the preset emergent light angle b is greater than the preset total reflection angle P, the light 10' can be totally reflected on the inner surface of the transparent substrate at the side far away from the display panel; when the light 8 'reaches the inner surface of the transparent substrate 16 on the side away from the display panel, part of the light is refracted to form light 9', and the other part of the light is reflected.

Both the refracted ray 5 ' and the refracted ray 9 ' will be observed by the human eye, i.e. the human eye observes the image a ' and the image a ".

By taking as an example that the light transmittance at the surface of the transparent substrate 16 away from the specular reflection layer 13 is m and the reflectance is 1-m, the light transmittance at the reflection layer 13 is n and the reflectance is 1-n, the light transmittance at the holographic film layer is s and the light diffraction rate at which the light is diffracted is 1-s, when the light incident angle is a, m, n and s are all greater than 0 and less than 1. Wherein, assuming that the brightness when the light ray 1 ' reaches the holographic film layer is Q, the brightness of the light rays 2 ' to 10 ' is as follows:

the brightness of ray 2' is: q s;

the brightness of ray 3' is: q (1-s);

the brightness of the light ray 4' is: q (1-s) (1-m);

the brightness of the light ray 5' is: q s m;

the brightness of the light ray 6' is: qs (1-m);

the brightness of the light ray 7' is: q s (1-m) s (1-n);

the brightness of the light ray 8' is: qs (1-m) s (1-n) s;

the brightness of the light ray 9' is: q s (1-m) s (1-n) s m;

the brightness of the light ray 10' is: qs (1-m) s (1-n) s (1-s);

the ratio of the brightness of the light ray 5 'to the brightness of the light ray 9' is

Since m, n and s are each greater than 0 and less than 1Therefore, compared with the prior art, the technology of the present disclosure can improve the brightness ratio (contrast) of the primary image a' and the double image a ″ observed by human eyes, so that the double image effect is reduced.

It should be noted that, in the case shown in fig. 4 and fig. 6, in order to avoid the light ray 6 'from reaching the specular reflection layer 13 due to total reflection between the holographic film layer 15 and the transparent substrate 16, in some embodiments, the refractive index of the holographic film layer 15 is greater than or equal to the refractive index of the transparent substrate 16, and when the light ray 6' passes through the interface between the transparent substrate and the holographic film layer, the light ray always enters the optically denser medium from the optically thinner medium, so that total reflection does not occur.

Fig. 7 is a schematic diagram of a light path of light rays in the display panel entering the functional substrate shown in fig. 5, and for convenience of description, the light rays are not considered to be refracted at the interface between the transparent substrate 16 and the holographic film layer 15, and the interface between the holographic film layer 15 and the specular reflection layer 13 to cause a change in a propagation angle.

The light 1 'emitted from the display panel 11 passes through the transparent substrate 16 and the holographic film layer 15 (the light having a propagation direction away from the display panel 11 passes through the holographic film layer 15 without diffraction) and enters the specular reflection layer 13, and the light 1' emits to the specular reflection layer 13 at an incident angle a; assuming that a preset total reflection angle P corresponding to the inner surface of the side of the transparent substrate 16 far away from the display panel 11 is P, the incident angle a is smaller than the preset total reflection angle P and is within a preset incident angle range; at this time, a part of the light 1 ' will be refracted to form refracted light 2 ', another part will be reflected to form light 3 ', the light 3 ' will be emitted to the holographic film layer 15 at the incident angle a, a part of the light 3 ' will be transmitted in the original propagation direction to form light 4 ', another part of the light 3 ' will be diffracted by the holographic film layer 15, and emits the light beam b at a predetermined light-emitting angle to the transparent substrate 16 to form a light beam 5 ', the light beam 5 ' reflects (may or may not be totally reflected) on a surface of the transparent substrate 16 away from the holographic film 15 to form a light beam 6, the light beam 6 ' emits the light beam b at the predetermined light-emitting angle to a surface of the transparent substrate 16 away from the display panel, because the preset emergent light angle b is greater than the preset total reflection angle P, the light ray 6' is totally reflected on the surface of one side of the transparent substrate 16 far away from the display panel; the light ray 4 'is reflected on the surface of one side of the transparent substrate 16 far away from the holographic film layer 15 to form a light ray 7', the light ray 7 'penetrates through the transparent substrate 16, the holographic film layer 15 (the light ray with the propagation direction far away from the display panel 11 does not diffract when penetrating through the holographic film layer 15) enters the specular reflection layer 13, and the light ray 7' irradiates the specular reflection layer 13 at an incidence angle a; part of the light ray 7 'will be refracted to form a refracted light ray 8', and another part will be reflected.

By taking as an example that the light transmittance at the surface of the transparent substrate 16 away from the specular reflection layer 13 is m and the reflectance is 1-m, the light transmittance at the reflection layer 13 is n and the reflectance is 1-n, the light transmittance at the holographic film layer is s and the light diffraction rate at which the light is diffracted is 1-s, when the light incident angle is a, m, n and s are all greater than 0 and less than 1. Where, assuming that the brightness when the light ray 1' reaches the specular reflection film 13 is Q, then:

the brightness of ray 2' is: q x n;

the brightness of ray 3' is: q (1-n);

the brightness of the light ray 4' is: q (1-n) s;

the brightness of the light ray 5' is: q (1-n) s (1-s);

the brightness of the light ray 6 'is determined by the brightness of the light ray 5', the angle b, the material of the transparent substrate 16, the material of the medium in contact with the surface of the side of the transparent substrate 16 away from the specular reflection layer, and the like; when the light 5 ' is totally reflected, the brightness of the light 6 ' is equal to the brightness of the light 5 '.

The brightness of the light ray 7' is: q (1-n) s (1-m);

the brightness of the light ray 8' is: q (1-n) s (1-m) n;

the ratio of the brightness of the light ray 2 'to the brightness of the light ray 8' is

Since m, n and s are each greater than 0 and less than 1Therefore, compared with the prior art, the technology of the present disclosure can improve the brightness ratio (contrast) of the primary image a' and the double image a ″ observed by human eyes, so that the double image effect is reduced.

In the solutions shown in fig. 5 and fig. 7, since the holographic film layer 15 is in contact with the surface of the transparent substrate 16 on the side away from the display panel 11, in order to ensure that the light 5 is totally reflected on the inner surface of the transparent substrate 16 on the side away from the display panel 11, the refractive index of the holographic film layer 15 should be smaller than the refraction of the touch substrate 12.

It should be noted that the preset incident angle range in the embodiment of the present disclosure may be set according to actual needs.

In some embodiments, considering that the ghost problem is relatively heavy when the human eye views at a large angle in the related art, it should be preferentially ensured to "vanish" the light rays with a large incident angle a, and the upper limit value of the preset incidence angle range is greater than or equal to the preset total reflection angle; optionally, the upper limit value of the preset entrance angle range is equal to the preset total reflection angle.

In some embodiments, the lower limit of the predetermined incident light angle range is smaller than the predetermined total reflection angle. As an alternative, the lower limit of the predetermined entrance angle range is set to 0 °, and the light rays having an incident angle a in the range from 0 to the predetermined total reflection angle may be "vanished". In practical application, considering that the ghost problem is relatively light when the human eye views at a small angle in the related art, the light with a small incident angle a may not be subjected to the "shadow elimination" process, and the lower limit value of the preset incidence angle range may be set according to actual needs; illustratively, the lower limit value of the preset entrance light angle range is set to 10 °.

With continued reference to fig. 4 and 5, to avoid light leakage from the side of the transparent substrate 16, in some embodiments, the side of the transparent substrate 16 is formed with a light absorbing layer 17 for absorbing light reaching the side of the transparent substrate 16.

Fig. 8 is a schematic structural diagram of another display device provided in the embodiment of the present disclosure, and as shown in fig. 8, the display device provided in this embodiment is an embodiment of the display device shown in fig. 3, specifically, a touch substrate 12 and a cover plate 14 are sequentially disposed on a light emitting side of a display panel 11 and in a direction away from the display panel 11, where the touch substrate 12 includes: a first substrate 121 and a touch-control functional structure 122 located on one side of the first substrate 121 close to the display panel 11; the specular reflection layer 13 and the holographic film layer 15 are positioned between the first substrate 121 and the cover plate 14, and the holographic film layer 15 is closer to the cover plate 14; the transparent substrate 16 is a cover plate 14. At this time, the cover plate 14, the hologram film layer 15, and the specular reflection layer 13 correspond to the functional substrate 21 shown in fig. 4.

In the present disclosure, any existing touch function structure may be adopted for the touch function structure 122, for example, the touch function structure 122 is a capacitive touch structure (self-capacitive touch or mutual capacitive touch), a resistive touch structure, or an ultrasonic touch structure. The technical solution of the present disclosure does not limit the specific structure of the touch function structure 122.

In some embodiments, in the process of manufacturing the display device shown in fig. 8, the holographic film layer 15 is separately prepared, and then the holographic film layer 15 is attached to the specular reflection layer 13 and the cover plate 14 respectively. Specifically, the holographic film layer 15 is prepared on a substrate base plate (referred to as a second substrate base plate) to obtain a holographic base plate, and then the entire holographic base plate is attached to the specular reflection layer 13 and the cover plate 14, so that a second substrate base plate (not shown in fig. 8) may exist between the holographic film layer 15 and the specular reflection layer 13 in the finally manufactured display panel 11.

In some embodiments, a side of the cover plate 14 away from the display panel 11 is provided with an encapsulation layer for encapsulating the functional substrate 21.

In some embodiments, the encapsulation layer comprises: protective layer 18 and/or waterproof layer 19.

The protective layer 18 is made of a high-hardness and transparent material for protecting the functional substrate 21; in some embodiments, the material of the protective layer 18 includes: at least one of silicon dioxide and silicon nitride.

The waterproof layer 19 serves to protect the functional substrate 21 from corrosion by humid air, sweat, moisture, and the like. In some embodiments, the waterproof layer 19 is mainly composed of the following raw materials in percentage by weight: 25-65% of nano fluorine polymer particles (the particle diameter is between 50-100 nm), 0.05-10% of polysiloxane, 4-20% of polyurethane, 30-75% of tasteless solvent, 1-20% of wollastonite fiber, 0.2-10% of nano titanium dioxide and 0.5-10% of nano zinc oxide. In the process of preparing the waterproof layer 19, the waterproof liquid can be prepared according to the above proportion, then the waterproof liquid is sprayed on the substrate through ultrasonic oscillation in a vacuum dust-free environment, and finally defoaming and laser annealing treatment are carried out to obtain the nanoscale film (with the thickness ranging from 5nm to 30nm) capable of playing a waterproof packaging role.

It should be noted that the figures only show the case where the encapsulation layer includes both the protective layer 18 and the waterproof layer 19, and the waterproof layer 19 is located on the side of the protective layer 18 away from the display panel 11.

In the embodiment, in order to prevent the lateral light leakage problem of the holographic film layer 15, the specular reflection layer 13, and the touch substrate 12, the light absorption layer 17 also covers the holographic film layer 15, the specular reflection layer 13, and the lateral surface of the touch substrate 12.

Fig. 9 is a schematic structural diagram of another display device provided in the embodiment of the present disclosure, and as shown in fig. 9, the display device provided in this embodiment is an embodiment of the display device shown in fig. 3, specifically, a touch substrate 12 is disposed on a light emitting side of a display panel 11, where the touch substrate 12 includes: a first substrate 121 and a touch-control functional structure 122 located on one side of the first substrate 121 close to the display panel 11; the mirror reflection layer 13 and the holographic film layer 15 are positioned on one side of the first substrate 121 far away from the display panel 11, and the holographic film layer 15 is closer to the first substrate 121; the transparent substrate 16 is a first substrate 121. At this time, the first substrate 121, the hologram film layer 15, and the specular reflection layer 13 correspond to the functional substrate 21 shown in fig. 5.

Unlike the embodiment shown in fig. 8, the display device provided in this embodiment does not have the cover plate 14, which is beneficial to the lightness and thinness of the display device.

In some embodiments, an encapsulation layer is provided on the side of the specularly reflective layer 13 remote from the display panel 11. For the detailed description of the encapsulation layer, reference is made to the foregoing contents, which are not described herein again.

The embodiment of the present disclosure further provides an intelligent magic mirror, which includes the display device provided in the foregoing embodiment, and for the specific description of the display device, reference may be made to the foregoing contents, which are not described herein again.

Fig. 10 is a flowchart of a manufacturing method of a display device according to an embodiment of the present disclosure, as shown in fig. 10, the manufacturing method is used for manufacturing the display device according to the previous embodiment, and the manufacturing method includes:

and step S1, preparing a display panel.

The display panel may be a liquid crystal display panel or an organic light emitting diode display panel.

Step S2, preparing a functional substrate, the functional substrate including: transparent substrate, specular reflection layer and holographic film layer.

The holographic film layer is configured to enable the propagation direction to face the display panel and the incident angle to be within a preset incident light angle range to be diffracted, and enable light rays emitted into the transparent substrate from the holographic film layer to be at a preset light emitting angle with the surface of one side, away from the display panel, of the transparent substrate, and the preset light emitting angle is larger than or equal to the preset total reflection angle.

And step S3, assembling the functional substrate on the light emitting side of the display panel.

Fig. 11 is a flowchart of an alternative implementation manner of implementing step S2 in the embodiment of the present disclosure, and as shown in fig. 11, in some embodiments, when the display device shown in fig. 8 is adopted as the display device, step S2 includes:

step S201a, forming a touch functional structure and a mirror reflection layer on two opposite sides of the first substrate respectively.

Step S202a, forming a holographic film layer on one side of the second substrate base plate to obtain the holographic base plate.

Step S203a, the two opposite sides of the holographic substrate are respectively attached to the mirror reflection layer and the cover plate, wherein the second substrate is attached to the mirror reflection layer, and the holographic film layer is attached to the cover plate.

That is, in the display device shown in fig. 8, the second substrate is provided between the hologram film layer and the specular reflection layer.

In some embodiments, the holographic substrate is attached to the specular reflection layer and the cover plate respectively by a light-cured adhesive.

Fig. 12 is a flowchart of another alternative implementation manner of implementing step S2 in the embodiment of the present disclosure, and as shown in fig. 12, in some embodiments, when the display device shown in fig. 9 is adopted as the display device, step S2 includes:

step S201b, forming a touch function structure on one side of the first substrate.

Step S202b, forming a holographic film layer on one side of the second substrate base plate to obtain the holographic base plate.

Step S203b is to form a specular reflection layer on the opposite side of the second substrate base substrate on which the holographic film layer is formed.

Step S204b, attaching the side of the holographic substrate on which the holographic film layer is formed to the opposite side of the first substrate on which the touch-control function structure is formed.

That is, in the display device shown in fig. 9, the second substrate is provided between the hologram film layer and the specular reflection layer.

In steps S202a and S201b, the process of preparing the holographic film layer is as follows: firstly, forming a photosensitive material layer on one side of a second substrate; then, the object light and the reference light are used for irradiating the photosensitive material layer, the interference of the object light and the reference light is utilized to enable the photosensitive material layer to record the propagation direction of the interference light, wherein the included angle between the object light and the plane where the photosensitive material layer is located is maintained at a preset light-emitting angle, and the included angle between the reference light and the plane where the photosensitive material layer is located is gradually increased from the lower limit value of the preset light-in angle range to the upper limit value of the preset light-in angle range.

In some embodiments, the range of thicknesses of the photosensitive material layer includes: 5um to 200 um. Since the photosensitive material layer is recorded layer by layer in the process of recording the interference light, the photosensitive material layer can be set according to the difference between the upper limit value and the lower limit value of the preset incidence angle range, and the larger the difference is, the larger the required thickness of the photosensitive material layer is.

In some embodiments, the photosensitive material layer comprises the following chemical composition: matrix resin, active fluororesin, silane coupled nano particles, active monomer, an initiating system, a plasticizer and a solvent.

In some embodiments, the base resin, the active fluororesin, the silane-coupled nanoparticles, the active monomer, the initiation system, and the plasticizer are present in the following amounts by weight in terms of solid content: 10-90 wt% of matrix resin, 3-20 wt% of active fluororesin, 1-10 wt% of silane coupled nano particles, 5-60 wt% of active monomer, 1-10 wt% of initiating system and 2-10 wt% of plasticizer.

In some embodiments, the photopolymer coating further comprises other additives, wherein the matrix resin, the active fluororesin, the silane-coupled nanoparticles, the active monomer, the initiation system, the plasticizer, and the other additives are as follows by weight percentage in solid content: 20 to 70 weight percent of matrix resin, 5 to 15 weight percent of active fluororesin, 1 to 5 weight percent of silane coupled nano particles, 10 to 40 weight percent of active monomer, 2 to 7 weight percent of initiating system, 3 to 7 weight percent of plasticizer and 0.5 to 1 weight percent of other auxiliary agents.

In some embodiments, the matrix resin is selected from at least one of polyvinyl acetate, polyvinyl butyral, copolymers of polyvinyl butyral and cellulose acetate, polyisoprene, polybutadiene, polystyrene, polyvinylpyrrolidone, polychloroprene, triacetyl cellulose.

In some embodiments, the reactive fluororesin is an allyl reactive fluororesin of formula 1 or a methacryloxy reactive fluororesin of formula 2.

Allyl groups of formula 1:

structural formula 2-methacryloyloxy:

in some embodiments, the coupled nanoparticles are at least one of coupled nano-alumina, boron nitride and silicon oxide, and the particle size of the coupled nanoparticles is 10-15 nm.

In some embodiments, the reactive monomer is an acryloxy acrylate-containing monomer comprising: at least one of liquid monomer or solid monomer, wherein the liquid monomer is one of diethylene glycol diacrylate, glycerol triacrylate, ethylene glycol dimethacrylate, pentaerythritol triacrylate, 2-phenoxyethyl acrylate, 2- (p-chlorophenoxyethyl methacrylate) and 1, 6-hexamethylene bisacrylamide; the solid monomer is at least one of 2,4, 6-tribromophenyl acrylate, pentachlorophenyl acrylate, 2-naphthyl acrylate, 2- (2-naphthoxy) ethyl acrylate and N-vinyl carbazole.

In some embodiments, the initiating system comprises, by mass: 0.5 to 4 weight percent of photoinitiator, 0.005 to 0.2 weight percent of photosensitizer and 2 to 4 weight percent of chain transfer agent, wherein the photoinitiator is at least one of 2- (o-chlorophenyl) -4, 5-bis (m-methoxyphenyl) imidazole, 2 ' -bis (o-chlorophenyl) -4,4 ', 5,5 ' -tetraphenyl 1,1 ' -diimidazole, 2, 5-bis (o-chlorophenyl) -4,4 ' -dimethylphenyl-1H-imidazole, 9, 10-anthraquinone, 2-ethylanthraquinone, 2-tert-butylanthraquinone, alpha-methylbenzoin and alpha-phenylbenzoin;

the photosensitizer is at least one of a cyanine dye, an indole cyclopentyl dye, 2, 5-bis { [4- (diethylamino) -2-methylphenyl ] -methylene } cyclopentanone, 2, 5-bis { [4- (diethylamino) phenyl ] methylene } cyclopentanone, and 2, 3-dihydro-5, 6-dimethoxy-2- [ (2,3,6, 7-tetrahydro-1H, 5H-benzoquinoline) methylene ] -1H-indan-1-one.

The chain transfer agent is at least one of 4-methyl-4H-3-mercapto-1, 2, 4-triazole, 2-mercaptobenzoxazole and 2-mercaptobenzothiazole.

In some embodiments, the plasticizer is at least one of triethylene glycol diacrylate, triethylene glycol diisooctanoate, diethyl adipate, triethylene glycol diacetate, polyethylene glycol methyl ether.

In some embodiments, the solvent is a mixed solvent of butyl acetate, dichloromethane, butanone and methanol, and the volume ratio of the butyl acetate, the dichloromethane, the butanone and the methanol is (4-5.5): (0.5-2): (0.5-2): (0.5 to 1.5).

In some embodiments, the other adjuvants include: the optical brightening agent is 7- (4 '-chloro-6' -diethylamino-1 ', 3', 5 '-triazine-4' -amino) -3-phenylcoumarin.

In some embodiments, when the light absorbing layer is included in the display device, after step S2, a step of forming the light absorbing layer is further included; here, the step of forming the light absorbing layer may be performed before step S3 or may be performed after step S3.

It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.