TW201814688A - Optical device and display with the optical device - Google Patents

Abstract

An optical device includes an optical switching element and an optical converting element. The optical switching element has a first region and a second region, wherein the first region and the second region are corresponding to different visible modes. The optical converting element is disposed corresponding to the optical switching element. The optical has a first portion corresponding to the first region and a second portion corresponding to the second region. When the first region is turned on, the second region is turned off, such that the light path can be switched to narrow visible mode or wide visible mode easily by controlling the first region and the second region.

Description

Optical device and display using the same

The present invention relates to the field of optics, and in particular to an optical device and a display using the optical device.

At present, in portable 3C products, especially 3C products with display panels, a privacy filter is often attached to protect privacy. The viewing angle control film restricts the light path of the light, so that the information displayed on the display panel cannot be seen when the distance between the eyes of the other person and the display panel exceeds a specific angle. This is a great help for business people using computers on airplanes or railways, or for those who value personal privacy.

Currently, the viewing angle control sheet is set on the surface of the display panel to achieve the effect of protecting privacy. However, this design method will affect the optical properties of the display panel. A common disadvantage is that after the viewing angle control sheet is attached, the brightness of the display panel becomes dark. In addition, if the use occasion is changed, for example, when sharing information with 3C products in a small space, a wide viewing angle mode is required so that more people can see the information on the display panel. At this time, you can only manually remove the viewing angle control film, and The operation of switching is rather inconvenient, and the removal of the viewing angle control sheet is often difficult to reuse due to deformation.

In order to solve the problems in the prior art, the viewing angle mode can be conveniently and quickly switched according to the use requirements, and an optical device is provided here. The optical device includes an optical switching element and a light conversion element. The optical switching element has a first region and a second region, and the first region and the second region correspond to different viewing angle modes, respectively. That is, when the first zone is turned on, the second zone is closed accordingly. The light conversion element is disposed relative to the light switching element. The light conversion element includes a first portion and a second portion, where the first portion corresponds to the first region and the second portion corresponds to the second region. Therefore, the light can pass through the first area or the second area to present different light paths, thereby achieving the effect of switching the viewing angle.

In one embodiment, the optical switching element includes a switching dielectric layer, a first electrode, and a second electrode. The second electrode is located at least in the second region, and the switching dielectric layer is located between the first electrode and the second electrode. Further, the switch dielectric layer is a polymer dispersed liquid crystal (PDLC) layer or a polymer network liquid crystal (PNLC) layer, and the polymer dispersion is controlled by the first electrode or the second electrode. Type liquid crystal layer or polymer network liquid crystal layer to control the switching of viewing angle mode.

In one embodiment, the second part is composed of a plurality of quantum dots or quantum columns. Quantum dots or quantum columns can be converted into white light after absorbing the energy of light, and scattered into full-circumference light to achieve the effect of wide viewing angle.

In one embodiment, the optical device further includes a diamond lens. The Rhombus lens includes a Rhombus mirror area, and the Rhombus mirror area corresponds to the first part. The polarized light of the Rhombus microstructure in the Rhombus lens area deflects the light in a specific direction. This is a private mode with a narrow viewing angle. Further, the width of the diamond mirror region is greater than or equal to the width of the first region, and the width of the second region is greater than or equal to the width of the second region, thereby avoiding light leakage.

In one embodiment, the optical device further includes a light source module, that is, a light switch element, a light conversion element, and a light source module are combined into a backlight module. The light source module is disposed below the light conversion element. The light source module provides white light in a first mode. The white light substantially penetrates the first region but does not penetrate the second region. That is, the white light can be controlled by the deflection of the switching medium layer or the setting of the diamond mirror area to restrict the path of the white light to pass through the first area and the first part only. In addition, the light source module can also provide non-white light in the second mode. The non-white light does not substantially penetrate the first region, and the quantum dots or quantum columns in the second part are excited to convert the non-white light to white light and use a scattering method. Reaching the whole week, this is a sharing mode with a wide viewing angle. Generally speaking, non-white light has a wavelength of 300 nm to 500 nm and has a high energy to excite a quantum dot or a quantum column. Here, white light and non-white light can be achieved by switching light emitting elements in the light source module, or can be achieved by switching light sources.

Here, a display is provided. The display includes an optical device and a display panel. The display panel is disposed relative to the optical device, and the optical device can switch different viewing angle modes.

In an embodiment, the display panel is a liquid crystal display panel, and the optical device may further include a light source module, that is, a light switch element, a light conversion element, and a light source module are collectively used as a backlight module of the display.

In another embodiment, the display panel is a self-emitting display panel. The self-luminous display panel provides light, and the light does not substantially penetrate the second area.

In an embodiment, the display further includes a diamond lens, the diamond lens includes a diamond lens area, and the diamond lens area corresponds to the first part. The diamond lens can be combined with the display panel, so that the light conversion element is disposed between the diamond lens and the optical switching element. The diamond lens can also be combined with an optical device, so that the optical switching element is disposed between the diamond lens and the light conversion element.

Here, the optical device provides modes corresponding to different viewing angle ranges, and can actively switch the viewing angle mode according to the requirements of use, without the need for installation or uninstallation on the hardware, and the control is simple and convenient.

Referring to FIG. 1 and FIG. 2, a schematic diagram of a first embodiment of an optical device of the present invention in a first mode and a schematic diagram of a second mode are shown, respectively. As shown in FIGS. 1 and 2, in this embodiment, the optical device 1 includes an optical switching element 10 and a light conversion element 20. The optical switching element 1 has at least a first region 11 and at least a second region 13, wherein the first region 11 and the second region 13 respectively correspond to different viewing angle modes. The optical switching element 10 includes at least a first electrode 15, at least a second electrode 17, and a switching dielectric layer 19. The second electrode 17 is located at least in the second region 13. The switching dielectric layer 19 is located between the first electrode 17 and the second electrode 19. The first electrode 15 and the second electrode 17 are made of a transparent conductive material, for example. The switching medium layer 19 is a polymer dispersed liquid crystal (PDLC) layer or a polymer network liquid crystal (PNLC) layer.

The polymer dispersed liquid crystal layer or the polymer network liquid crystal layer uses liquid crystal molecules to be dispersed in a polymer film, so that the liquid crystal is formed into a spherical shape or a three-dimensional network shape. Its characteristic is that when driven by voltage, the light and dark states have obvious changes. When a voltage is applied, the molecules of the polymer-dispersed liquid crystal or polymer network liquid crystal layer are driven by an electric field to deflect, allowing light to pass in a specific direction to appear bright; when no voltage is applied, the polymer-dispersed liquid crystal or polymer Molecules in the liquid crystal layer of the network are not deflected. At this time, the light is reflected or scattered and cannot penetrate into a dark state.

Here, the operation of the optical device 1 is to control the deflection of the liquid crystal in the first region 11 or the second region 13 in the optical switching element 10 by generating an electric field by applying a voltage to the first electrode 15 or the second electrode 17. In the subsequent description of this application, when a voltage is applied to deflect the switching dielectric layer 19 to allow light to pass through, it is defined as being turned on, and no voltage is applied to fail to let light through, defined as being turned off. In addition, in the first mode, the first region 11 is turned on, and the second region 13 is turned off correspondingly. In contrast, in the second mode, the second region 13 is turned on, and the first region 11 is correspondingly turned off.

The light conversion element 20 is provided relative to the light switching element 10. For example, the light conversion element 20 is a two-layer structure that is attached to the light switching element 10, and may be spaced from each other. The light conversion element 20 includes at least a first portion 21 and at least a second portion 23, wherein the first portion 21 corresponds to the first region 11 and the second portion 23 corresponds to the second region 13. Here, the first portion 21 may be a blank area, and the second portion 23 is a light conversion area. The second area 23 includes light conversion particles 25, and the light conversion particles 25 are quantum dots, quantum columns, or a combination thereof.

In FIG. 1, a first mode in which the first region 11 is turned on and the second region 13 is turned off is presented. In this embodiment, the light source module 30 is a direct-type light source as an example, but it is not limited thereto. The light source module 30 provides white light in the first mode. The white light rays pass through the first region 11 and the first portion 21. Since the light rays are restricted by the liquid crystal deflection direction of the switching dielectric layer 19 in the first region 11, the light exit path only faces a specific direction, and the specific direction is, for example, a front view direction. At the same time, the liquid crystal of the switching medium layer 19 in the second region 13 is not deflected. If white light passes through the second region 13 and is affected by the liquid crystal in the switching medium layer 19, the white light may be reflected or scattered and cannot pass through, thereby showing white light. A state in which the light only passes through the first part 21 and faces a specific direction, that is, the light emission angle is directed to a specific direction. Therefore, the first mode presents a privacy mode with a narrow viewing angle.

In FIG. 2, a second mode in which the second region 13 is turned on and the first region 11 is turned off is presented. The light source module 30 provides non-white light in the second mode. The liquid crystal of the switching medium layer 19 in the first region 11 is not deflected, and non-white light is blocked from passing through the first region 11 and cannot pass through. The non-white light enters the second part 23 after passing through the second area 13, and excites the light conversion particles 25 in the second part 23. When the light-converting particles 25 are excited, they convert non-white light into white light and scatter to form a full-circumferential light. Here, the light path finally presented is white light, which is emitted in all directions in the form of full ambient light, and the second mode presents a wide-angle sharing mode. Because the wavelengths of white light and non-white light are different, the excitation light conversion particles 25 require higher energy. The non-white light is realized in a blue light band with a wavelength of 300 nm to 500 nm. This is only an example, but not limited to this. Short-wavelength light sources such as violet and ultraviolet light can also achieve this effect.

In this embodiment, the opening and closing of the first area 11 and the second area 13 must cooperate with the switching light source module 30 to generate white light and non-white light to achieve the function of switching between a narrow viewing angle and a wide viewing angle. The light source module 30 includes a first light source 31A and a second light source 31B. The first light source 31A corresponds to the first area 11 and the second light source 31B corresponds to the second area 13. The first light source 31A generates white light and the second light source 31B produces non-white light.

Further, the first light source 31A and the second light source 31B may be light-emitting diode (LED) or organic light-emitting diode (OLED) light sources, and the first light source 31A includes red light. The LED or OLED, the green LED or OLED, and the blue LED or OLED are all turned on to generate white light, and the second light source 31B includes only the blue LED or OLED and generates non-white light in a blue light band with a wavelength of 300 nm to 500 nm. In the first mode, the first light source 31A is turned on and the second light source 31B is turned off, and in the second mode, 31B is turned on and the first light source 31A is turned off to achieve this effect. This is only an example, but it is not limited to this. In the modified example, the first light source 31A and the second light source 31B of the light source module 30 are both red LED or OLED, green LED or OLED, blue LED or OLED In the configuration mode, the first light source 31A and the second light source 31B are all turned on in the first mode to generate white light, and only the blue LED or OLED is turned on in the second mode, and the power of the blue LED or OLED is further enhanced to achieve.

In addition, the width W _{2B of the} second portion 23 is exemplified as being greater than or equal to the width W _{2A of the} second region 13, which limits the source of the non-white light rays entering the second portion 23. Energy, this structure design can avoid the non-white light leakage in the second mode to harm the user ’s eyes, so as to achieve the effect of protecting the user ’s eyes, and also avoid the chromatic aberration or other optical caused by non-white light leakage. variation.

Further, referring to FIG. 3A and FIG. 3B, schematic top views of different embodiments of the light conversion element according to the present invention are shown. As shown in FIG. 3A, the first portion 21 and the second portion 23 of the light conversion element 20 are staggered and distributed in a straight shape when viewed from a top view. As shown in FIG. 3B, the second portion 23 of the light conversion element 20 has a staggered line or mesh shape, so that the first portion 21 is arranged in a plurality of separated grids. This is only an example, but it is not limited to this. For example, the first portion 21 and the second portion 23 can also be distributed in other ways, for example, the first portion 21 and the second portion 23 are diagonally staggered.

Still further, the light source module 30 is disposed below the optical switching element 10. For example, the light switching element 10, the light conversion element 20 and the light source module 30 are combined into a backlight module. That is, the optical device 1 and the light source module 30 can be independently set or combined. When the optical device 1 and the light source module 30 are combined into a backlight module, different light generated by the light source module 30 is controlled and controlled. The optical switching element 10 is correspondingly turned on or off. The light path of the backlight module is controlled in a specific direction in the first mode, and it is a full-circle light in the second mode. The light path of the backlight module is controlled to determine the light-emitting viewing angle mode.

Referring to FIG. 4 and FIG. 5, a schematic diagram of a second embodiment of an optical device according to the present invention in a first mode and a schematic diagram in a second mode are shown, respectively. As shown in FIGS. 4 and 5, the difference between the second embodiment and the first embodiment is mainly that the optical device 1 further includes a diamond lens 40. The diamond lens 40 includes a diamond lens region 41, and a plurality of diamond lens microstructures 411 are arranged on the diamond lens region, and the diamond lens region 41 corresponds to the first region 11. As shown in FIG. 4, the lenticular microstructure 411 in the lenticular mirror region 41 can deflect the light generated by the light source module 30 toward a specific direction. It is particularly important to deflect the white light ray in the first mode. The first region 11 exhibits a narrow viewing angle mode.

The light source module 30 used in FIG. 4 and FIG. 5 is an example of an edge-light type light source. Here, the light source module 30 includes a light source first light source 31A, a second light source 31B, and a light guide plate 33. In this embodiment, the first light source 31A is located on one side of the light guide plate 33 to generate white light, and the second light source 31B is located on the other side of the light guide plate 33 relative to the first light source 31B to generate non-white light. This is only an example, not a limitation. In the modified example, the first light source 31A and the second light source 31B are both configured with a red LED or OLED, a green LED or OLED, and a blue LED or OLED. In the first mode, the first light source 31A and the second light source 31B are all turned on to generate white light, and in the second mode, the red LED and the green LED are turned off, and the luminous intensity of the blue LED is increased to achieve the same effect.

Generally speaking, the light generated by the edge-light type light source module 30 has no specific direction before entering the first area 11 or the second area 13 through the light guide plate 33. At this time, the light is directed to the specific area through the diamond microstructure 411 direction. As shown in FIG. 4, in the first mode, the white light rays generated by the first light source 31A are guided to the first region 11 through the light guide plate 33 and the prism structure 411, and then emitted after passing through the first portion 21. As shown in FIG. 5, in the second mode, the non-white light generated by the second light source 31B is guided to the second area 13 by the light guide plate 33, and then enters the second portion 23 through the deflected switching medium layer 19 and is excited. Light-converting particles 25 in the second section 23. When part of the non-white light enters the prism structure 411, it is still guided to the first region 11, but is blocked by the undeflected liquid crystal in the switching medium layer 19 and cannot pass through. In some embodiments, the diamond lens 40 may include one or more layers, which may be configured according to the design of the light source so that the adjustment light is directed in a specific direction to meet the requirement of a narrow viewing angle in the first mode.

As shown in FIG. 5, in the second mode, the second light source 31B of the light source module 30 is turned on to generate non-white light in a blue light band with a wavelength of 300 nm to 500 nm, and the first light source 31A is turned off. Non-white light enters the second portion 23 through the second region 13 and excites the light-converting particles 25 to generate white light all-circumferential light. In addition, when the non-white light does not enter the second region 13, the non-white light is guided to the first region 11 by the diamond mirror region 41 and is blocked or reflected by the switching dielectric layer 19 without entering the first portion 21. Thereby, non-white light can be prevented from entering the first portion 21 to generate chromatic aberration or other optical property variations.

In FIGS. 4 and 5, the optical switching element 10, the light converting element 20, the light source module 30, and the prism lens 40 may be independently provided or combined. For example, the optical switching element 10, the light converting element 20, and the light source module may be provided. The group 30 and the diamond lens 40 are combined into a backlight module.

Furthermore, the width W _{3 of the} prism region 41 is greater than or equal to the width W _{1 of the} first region 11, thereby restricting the optical path, and preventing white light rays from entering the second portion 23 and causing a change in viewing angle or non-white light. First 21. Furthermore, when the light-converting particles 25 in the second part 23 are quantum columns, the long axis of the quantum column is parallel to the extension axis A1 of the prism mirror microstructure 411 in the diamond mirror region 41. Face orientation.

Please refer to FIG. 6, which is a schematic diagram of a first embodiment of a display according to the present invention. The display 100 includes an optical device 1 and a display panel 5. The display panel 5 is provided relative to the optical device 1, and the optical device 1 can be implemented in the aforementioned various embodiments. The display 100 can be provided with a light source module 30 separately, so that the optical device 1 can be disposed between the display panel 5 and the light source module 30, or the optical device 1 includes the light source module 30, that is, the light switching element 10 and the light conversion element 20. Combined with the light source module 30 into a backlight module. In the case where the optical switching element 10, the light converting element 20, and the light source module 30 are combined into a backlight module, the opening or closing of the first region 11 and the second region 13 of the optical switching element 10 and the corresponding light source module are controlled. The switching of the white light and the non-white light of the group 30 can control the light path of the backlight module to be a specific direction or full ambient light, and directly cause the display panel 5 to display a narrow viewing angle mode or a wide viewing angle mode.

As shown in FIG. 6, the display 100 further includes a diamond lens 40, which is disposed between the display panel 5 and the optical device 1. The diamond lens area 41 in the diamond lens 40 faces the optical device 1 and corresponds to the first part 21. Here, the rhombic lens 40 is an independent element, but it is only an example and is not limited thereto. For example, the rhombic lens 40 may be attached to the lower surface of the display panel 5 to face the optical device 1 when being modularized. . In this embodiment, the light conversion element 20 is located between the diamond lens 40 and the optical switching element 10.

Please refer to FIG. 7, which is a schematic diagram of a second embodiment of the display of the present invention. 7 is different from the embodiment shown in FIG. 6 in that the rhombic lens 40 is disposed on the optical device 1, the optical switching element 10 is located between the rhombic lens 40 and the light conversion element 20, and the light conversion element 20 is located on the rhombic lens 40. Between the display panel 5 and the display lens 5, the prism lens 40 is located between the optical switching element 10 and the light source module 30. In the embodiments of FIGS. 6 and 7, the display panel 5 is an example of a liquid crystal display panel, and the light source module 30 is an example that includes a light source 31. Further, as described in the foregoing embodiment, the diamond lens 40 and the optical switching element 10, the light conversion element 20 and the light source module 30 can be combined into a backlight module. When a light source is provided to the display panel 5, it is controlled by control. The light generated by the backlight module is directed toward a specific direction or full-circle light, and it is determined that the generated picture is a narrow viewing angle mode or a wide viewing angle mode.

In addition, the embodiments in FIG. 6 and FIG. 7 use a single light source, but are not limited thereto. The light source modules in other embodiments or variations can also be applied to the light source module 30 in FIGS. 6 and 7.

Referring to FIG. 8, FIG. 8 is a schematic diagram of a third embodiment of the display of the present invention. In the embodiment shown in FIG. 8, the display panel 5 is different from FIG. 6 and FIG. 7. The display panel 5 shown in FIG. 8 is a self-luminous display panel and does not require a light source module. That is, the display panel 5 has a light-emitting element 55, and the light-emitting element 55 may be an LED or an OLED to achieve a self-emission function. In the embodiment of the self-luminous display panel, red LEDs, green LEDs, and blue LEDs can be provided as the light emitting element 55 and the pixel imaging element in the pixel region of the display panel 5. This is merely an example, and is not limited thereto. , Green light, blue light, and white light (RGBW) together define the pixel area is also an implementable way. In the first mode, the display panel 5 provides a light. At this time, the light is blocked by the switching dielectric layer 19 and cannot pass through the second area 13. In the first mode, the first area 11 is turned on, and the first area 11 is turned on. The second zone 13 is closed, as shown in FIG. 8. In the second mode, the power of the blue light emitting element in the display panel 5 can be controlled to be increased. The light is blocked by the switching medium layer 19 in the first region 11 and only enters the second region 23 into the second region 13 through the display panel 5. The blue light part of the light is excited by the light conversion particles 25 to be converted into white light, and scattered to exhibit a wide viewing angle mode.

Further, the display 100 further includes a diamond lens 40. The diamond lens 40 is disposed between the display panel 5 and the light source device 1 to limit the deflection direction of the light. Here, the rhombic lens 40 is connected to the optical device 1, and the rhombic lens area 41 of the rhombic lens 40 is like the display panel 5. Here, the optical switching element 10 is located between the diamond lens 40 and the light conversion element 20. This is merely an example, but it is not limited to this. In other variations, the prism lens 40 may be disposed on the upper surface of the display panel 5, and the prism microstructure 411 faces away from the display panel 5.

Referring to FIG. 9, FIG. 9 is a schematic diagram of a fourth embodiment of the display of the present invention. As shown in FIG. 9, the display 100 of the fourth embodiment is different from the foregoing embodiment. In this embodiment, the optical device 1 is disposed between the first substrate 51 and the second substrate 52 of the display 100. The first substrate 51 is an array substrate and the second substrate 52 is a color filter substrate, but this is only an example and is not limited thereto. The optical device 1 includes an optical switching element 10, a light conversion element 20, a first electrode 15, and a second electrode 17. The first electrode 15 is located on the first substrate 51. The optical switching element 10 is located on the first electrode 15 and has a first region 11 and a second region 13. The light conversion element 20 is located on the optical switching element 10 and has a first portion 21 and a second portion 23. The first portion 21 corresponds to the first region 11 and the second portion 23 corresponds to the second region 13. The second electrode 17 is located on the second substrate 52, faces the optical device 1, and is adjacent to the light conversion element 20. The second electrode 17 corresponds to at least the second portion 23. Here, the switching dielectric layer 19 filled in the first region 11 and the second region 13 is replaced by a polymer dispersed liquid crystal layer or a polymer network liquid crystal layer, which replaces the liquid crystal layer of a conventional liquid crystal display, and the first electrode 15 is driven. And at least one of the second electrode 17 achieves the effect of switching the light path, so that the viewing angle mode of the display 100 can be actively switched. Next, the first electrode 15 and the second electrode 17 are made of a transparent conductive layer material, for example, indium tin oxide (ITO), aluminum zinc oxide (AZO), or a thickness of less than 100 nanometers (nm). The metals and the like are only examples here, but not limited thereto. The polymer-dispersed liquid crystal layer or polymer network liquid crystal mentioned in the above embodiments, because the liquid crystal molecules have two optical paths refracting state switching due to the application of voltage, which is used to switch the viewing angle. The dispersion type liquid crystal layer or polymer network liquid crystal is limited, and any liquid crystal or polymer material having this characteristic is in this range. Optionally, in a modified example, the light filter particles 25 in the second portion 23 may be used to replace the color filter layer, that is, the color filter layer originally provided on the first substrate 51 or the second substrate 52 may be omitted. It is replaced with the light conversion particle 25 in the light conversion element 20.

Further, the display 100 further includes a light source module 30 and a diamond lens 40. The light source module 30 is located below the first substrate 51, and the diamond lens 40 may be located between the light source module 30 and the first substrate 51. Examples, but not limited to this. In a variation, similar to the third embodiment of the display of the present invention, a self-emitting display panel may be used to omit the use of the light source module 30. In another variation, the optical device 1 is embedded in a self-emitting display panel.

In summary, the function of switching the viewing angle can be achieved by setting the optical device inside the display and controlling the switches of the first and second zones of the optical device in cooperation with the corresponding switching of white and non-white light sources. In this way, it is possible to actively switch the viewing angle mode according to the use occasion, timing and various user needs, without the need for hardware installation or uninstallation, and the control is simple and convenient.

Although the preferred embodiment is disclosed as described above, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and retouching without departing from the scope of the present invention. Therefore, the scope of patent protection of the present invention Subject to the scope of the patent application attached to this specification.

1‧‧‧ optical device

10‧‧‧ Optical Switching Element

11‧‧‧ District 1

13‧‧‧Second District

15‧‧‧first electrode

17‧‧‧Second electrode

19‧‧‧Switch dielectric layer

20‧‧‧light conversion element

21‧‧‧ Part I

23‧‧‧ Part Two

25‧‧‧light-converting particles

30‧‧‧light source module

31‧‧‧light source

31A‧‧‧First Light Source

31B‧‧‧Second Light Source

33‧‧‧light guide

40‧‧‧Ling lens

41‧‧‧Lingjing District

411‧‧‧Microscope microstructure

5‧‧‧Display Panel

51‧‧‧First substrate

52‧‧‧second substrate

55‧‧‧Light-emitting element

100‧‧‧ Display

A1‧‧‧Extended shaft

W ₁ ‧‧‧Width

W _2A ‧‧‧Width

W _2B ‧‧‧Width

W ₃ ‧‧‧Width

[FIG. 1] It is a schematic diagram of a first embodiment of an optical device of the present invention in a first mode. [FIG. 2] It is a schematic diagram of the first embodiment of the optical device of the present invention in the second mode. 3A is a schematic top view of an embodiment of a light conversion element according to the present invention. 3B is a schematic top view of another embodiment of a light conversion element of the present invention. [FIG. 4] A schematic diagram of a second embodiment of the optical device of the present invention in the first mode. [FIG. 5] A schematic diagram of a second embodiment of the optical device of the present invention in a second mode. 6 is a schematic diagram of a first embodiment of a display according to the present invention. FIG. 7 is a schematic diagram of a second embodiment of the display of the present invention. [FIG. 8] A schematic diagram of a third embodiment of the display of the present invention. [FIG. 9] A schematic diagram of a fourth embodiment of the display of the present invention.

Claims (19)

An optical device includes: an optical switching element having at least a first region and at least a second region, wherein the first region and the second region respectively correspond to different viewing angle modes; and a light conversion element with respect to the An optical switching element is provided. The light conversion element includes at least a first portion and at least a second portion, wherein the first portion corresponds to a first region and the second portion corresponds to a second region. The optical device according to claim 1, wherein the optical switching element comprises: a switching dielectric layer; at least a first electrode; and at least a second electrode located at least in the second region, wherein the switching dielectric layer is located in the Between the first electrode and the second electrode. The optical device according to claim 2, wherein the switching medium layer is a polymer dispersed liquid crystal layer or a polymer network liquid crystal layer. The optical device according to claim 1, wherein the second part is composed of a plurality of quantum dots or at least one quantum column. The optical device according to claim 1, further comprising a diamond lens, wherein the diamond lens includes at least one diamond lens region, and the diamond lens region corresponds to the first region. The optical device according to claim 5, wherein a width of the diamond region is greater than or equal to a width of the first region. The optical device according to claim 6, wherein a width of the second portion is greater than or equal to a width of the second region. The optical device according to claim 1, wherein a width of the second portion is greater than or equal to a width of the second region. The optical device according to claim 1, further comprising a light source module, the light source module is disposed below the optical switching element, wherein the light source module provides a white light, the white light does not substantially penetrate the second light Area. The optical device according to claim 1, further comprising a light source module, which is disposed below the optical switching element, wherein the light source module provides a non-white light, and the second part converts the non-white light into White light. The optical device according to claim 10, wherein the wavelength of the non-white light is 300 nm to 500 nm. A display includes: an optical device including: an optical switching element having at least a first region and at least a second region, the first region and the second region respectively corresponding to different viewing angle modes; and a light conversion element Relative to the optical switching element, the light conversion element includes at least a first portion and at least a second portion, wherein the first portion corresponds to the first region and the second portion corresponds to the second region; And a display panel disposed relative to the optical device. The display according to claim 12, wherein the display panel is a liquid crystal display panel, and the optical device further includes a light source module disposed below the optical switching element. The display according to claim 13, wherein the light source module provides a white light, and the white light does not substantially penetrate the second area. The display according to claim 13, wherein the light source module provides a non-white light, and the second part converts the non-white light into white light. The display according to claim 12, wherein the display panel is a self-emitting display panel, and the self-emitting display panel provides a light in a first mode, and the light does not substantially penetrate the second area. , Where the first zone is turned on and the second zone is turned off during the first mode. The display according to claim 12, further comprising a diamond lens, the diamond lens includes at least one diamond lens area, and the diamond lens area corresponds to the first part. The display according to claim 17, wherein the light conversion element is disposed between the diamond lens and the light switching element. The display according to claim 17, wherein the light switching element is disposed between the diamond lens and the light conversion element.