CN210142245U - Adjustable peep-proof display - Google Patents
Adjustable peep-proof display Download PDFInfo
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- CN210142245U CN210142245U CN201921389391.5U CN201921389391U CN210142245U CN 210142245 U CN210142245 U CN 210142245U CN 201921389391 U CN201921389391 U CN 201921389391U CN 210142245 U CN210142245 U CN 210142245U
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Abstract
The utility model discloses an adjustable peep-proof display, including liquid crystal display panel, visual angle transform membrane and backlight unit includes: a light source for emitting an annular light; the light guide plate is used for converting the annular light rays into plane light rays; the narrow-view prism film is positioned on the upper layer of the light guide plate and used for adjusting the irradiation range of the plane light; the visual angle conversion film is positioned on the upper layer of the narrow-view prism film, is connected with an external power supply, and is in a transparent state or a fog state under the action of the external power supply to change the width of the irradiation range of the plane light; the liquid crystal display panel is positioned on the upper layer of the visual angle conversion film and is used for displaying an image formed by plane light rays with a wide and narrow irradiation range so as to present two states of peep prevention and normal display. The device realizes the switching of two states of peep-proof and normal display of the display by controlling the two states of the visual angle change film.
Description
Technical Field
The utility model relates to a display field especially relates to an adjustable peep-proof display.
Background
At present, information security is widely regarded by people. Peep-proof screen displays are widely used in the commercial fields of banks, hotels and the like. However, in the field of information protection display technology, under the condition of both information protection and information sharing, the requirements of people on the viewing angle width when the liquid crystal display device displays information are different in different occasions.
In the prior art, the conventional peep-proof screen display is provided with a peep-proof film in the backlight module to realize the peep-proof function of the display. But additionally increase the energy consumption that peep-proof membrane leads to the display screen easily in backlight unit and increase, thickness increase to current peep-proof display device can't satisfy two kinds of visual angle characteristics simultaneously, for example whether realize through peep-proof membrane loading that the wide and narrow visual angle shows has mechanicalness, can't realize intelligent switching effect. When normal display is satisfied, an anti-peeping display capable of adjusting the viewing angle width according to the use occasions and the requirements of users is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an adjustable peep-proof display for realize the display screen peep-proof and the intelligent switching of normal display state.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides an adjustable peep-proof display, includes liquid crystal display panel, visual angle change membrane and backlight unit, backlight unit includes:
a light source for emitting an annular light;
the light guide plate is used for converting the annular light rays into plane light rays;
the narrow-view prism film is positioned on the upper layer of the light guide plate and used for adjusting the irradiation range of the plane light;
the visual angle conversion film is positioned on the upper layer of the narrow-view prism film, is connected with an external power supply, and is in a transparent state or a fog state under the action of the external power supply, so as to change the width of the irradiation range of the plane light;
the liquid crystal display panel is positioned on the upper layer of the visual angle conversion film and is used for displaying images formed by plane light rays with wide and narrow irradiation ranges so as to present two states of peeping prevention and normal display.
Optionally, the backlight module further includes a reflective film, the reflective film is located on a lower layer of the light guide plate, the light source is located on one side of the light guide plate, and the reflective film is used for reflecting light emitted from a lower portion of the light guide plate.
Optionally, the backlight module includes a reflective film, and the light source is disposed between the reflective film and the light guide plate.
Optionally, the backlight module includes a diffusion film, and the diffusion film is located between the light guide plate and the narrow viewing angle prism film and is used for correcting the planar light.
Optionally, the backlight module includes a module frame, the module frame includes a lower baffle and a side baffle, the lower baffle is located on the lower layer of the light guide plate, the side baffle is disposed on one side of the light guide plate, and the lower baffle is connected to the side baffle.
Optionally, the visible angle conversion film is a monostable film formed by polymerizing nematic positive liquid crystal and an ultraviolet polymerizable colloid, the monostable film is transparent when the power supply is switched on, and is in a foggy state after the power supply is switched off.
Optionally, the visible angle conversion film is a bistable film formed by polymerizing smectic phase liquid crystal or cholesteric phase liquid crystal and an ultraviolet polymerizable colloid, the bistable film is converted between a transparent state and a fog state when the power supply is switched on, and the state is maintained after the power supply is switched off.
Optionally, the liquid crystal display panel is a conventional LCD liquid crystal display panel.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect:
(1) the different states of the visual angle conversion film have different effects on light rays, the light rays transmitted by the narrow-view prism film in the transparent state pass through the visual angle conversion film in the original narrow-view state, and the display screen is in a peep-proof screen mode; and diffusing the light transmitted by the narrow viewing angle prism film when the visible angle conversion film is in a fog state, so that the light is diffused and penetrates through the narrow viewing angle prism film, and the display screen is in a normal display state. Therefore, the display can realize intelligent switching between peep-proof state and normal display state.
(2) The device need not additionally to add peep-proof membrane in backlight unit, consequently can reduce the thickness of display, reduces the energy consumption of display.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments 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 for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a cross-sectional structural view of a first embodiment of the adjustable peep-proof display of the present invention;
fig. 2 is a cross-sectional structural view of a second embodiment of the adjustable peep-proof display of the present invention;
fig. 3 is a schematic view illustrating the light transmission of the adjustable peep-proof display of the present invention in the normal display mode;
fig. 4 is a schematic view of the light transmission of the adjustable peep-proof display of the present invention in the peep-proof mode.
Description of the symbols:
a liquid crystal display panel-10; a viewing angle changing film-100; a backlight module-20; a narrow viewing angle prism film-101; a diffusion film-102; a light guide plate-103; a reflective film-104; an LED lamp-105; module box-106.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing an adjustable peep-proof display can realize the intelligent switching of two kinds of display states of display.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Fig. 1 is a cross-sectional structure diagram of a first embodiment of the adjustable peep-proof display of the present invention. As shown in fig. 1, the adjustable privacy display includes a liquid crystal display panel 10, a viewing angle changing film 100, and a backlight module 20, where the backlight module 20 includes a narrow viewing angle prism film 101, a light guide plate 103, and a light source 105.
The light source 105 is used to emit a ring light. The light source 105 is a spherical light source, and thus the light emitted from the light source 105 is a ring light. In this embodiment, the light source 105 may be an LED lamp.
The light guide plate 103 is used for converting the annular light rays into plane light rays; the narrow viewing angle prism film 101 is located on an upper layer of the light guide plate 103, and the narrow viewing angle prism film 101 is used for adjusting an irradiation range of the plane light. The utility model discloses in, narrow visual angle prism membrane 101 can reduce the light scope 30 ~ 40.
The visible angle conversion film 100 is located on the upper layer of the narrow viewing angle prism film, is connected with an external power supply, and is in a transparent state or a fog state under the action of the external power supply, so as to change the width of the irradiation range of the plane light.
The visible angle changing film 100 and the narrow viewing angle prism film 101 are attached to each other without generating water ripples that affect normal display images except for electrostatic adsorption.
Specifically, the viewing angle changing film 100 is a monostable film formed by polymerizing nematic positive liquid crystal and an ultraviolet polymerizable colloid; the monostable film is transparent when powered on and is foggy when powered off.
In another embodiment of the present invention, the viewing angle changing film 100 is a bistable film; the bistable film is formed by polymerizing smectic phase liquid crystal or cholesteric liquid crystal and ultraviolet polymerizable colloid; the bistable film is switched between a transparent state and a fog state when the power supply is switched on, and the state is kept unchanged after the power supply is switched off.
The liquid crystal display panel is positioned on the upper layer of the visual angle conversion film and is used for displaying images formed by plane light rays with wide and narrow irradiation ranges so as to present two states of peeping prevention and normal display.
In order to increase the utilization ratio of light, increase the luminance of display, the utility model discloses adjustable peep-proof display still includes reflectance coating 104, reflectance coating 104 is located the lower floor of light guide plate 103 for the light that the reflection light guide plate 103 below jetted out.
Specifically, the light source is located at one side of the light guide plate, and the reflective film is used for reflecting light emitted below the light guide plate.
As shown in fig. 2, the light source 105 may also be located between the reflective film 104 and the light guide plate 103.
The module frame 106 is composed of a lower barrier located at the lower side of the reflective film 104 and a side barrier located at one side of the light guide plate 103.
The liquid crystal display panel 10 is disposed on the viewing angle changing film 100, and the liquid crystal display panel 10 is a conventional LCD display panel.
Fig. 3 is the light transmission schematic diagram of the adjustable peep-proof display of the present invention in the normal display mode. As shown in fig. 3, the ring-shaped light emitted from the light source 105 forms a planar light after passing through the light guide plate 103 and the diffusion film 102; due to the refraction action of the narrow viewing angle prism film 101 on light, the irradiation range of the planar light after passing through the narrow viewing angle prism film 101 is reduced.
The visible angle conversion film 100 is in a fog state, the transmittance reaches more than 80%, and the haze reaches more than 70%; when light propagates through the viewing angle changing film 100, reflection and refraction occur, and the light is emitted from each angle;
therefore, the planar light formed after passing through the light guide plate 103 and the diffusion film 102 can be emitted in all directions through the viewing angle conversion film 100 even after the irradiation range of the planar light is reduced. At this time, the display is in a normal display mode, and the visual angle is ± 75 °.
Fig. 4 is a schematic view of the light transmission of the adjustable peep-proof display of the present invention in the peep-proof mode. As shown in fig. 4, the ring-shaped light emitted from the light source 105 forms a planar light after passing through the light guide plate 103 and the diffusion film 102; the irradiation range decreases after the plane light is transmitted in the narrow viewing angle prism film 101.
At this time, the viewing angle conversion film 100 is transparent, the transmittance is more than 90%, the haze is less than 5%, light is transmitted in the viewing angle conversion film 100, the transmittance of the viewing angle conversion film 100 is high, and the light is not easy to refract and reflect.
Therefore, the irradiation range of the plane light passing through the light guide plate 103 and the diffusion film 102 is reduced and then passes through the viewing angle conversion film 100, and the irradiation range is not increased. At this time, the display is in a peep-proof mode, and the visual angle is less than +/-45 degrees.
The utility model discloses adjustable peep-proof display, it shows that the visual angle has the adjustability, has good optical display characteristic, low-power consumption, ultra-thin and low-cost advantage, uses the electronic information ization technique display that has the display function that all contact of modern daily life specially, for example the display of smart mobile phone, panel computer, notebook computer and desktop.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. The utility model provides an adjustable peep-proof display, includes liquid crystal display panel, visual angle change membrane and backlight unit, its characterized in that, backlight unit includes:
a light source for emitting an annular light;
the light guide plate is used for converting the annular light rays into plane light rays;
the narrow-view prism film is positioned on the upper layer of the light guide plate and used for adjusting the irradiation range of the plane light;
the visual angle conversion film is positioned on the upper layer of the narrow-view prism film, is connected with an external power supply, and is in a transparent state or a fog state under the action of the external power supply, so as to change the width of the irradiation range of the plane light;
the liquid crystal display panel is positioned on the upper layer of the visual angle conversion film and is used for displaying images formed by plane light rays with wide and narrow irradiation ranges so as to present two states of peeping prevention and normal display.
2. The adjustable privacy display of claim 1, wherein the backlight module further comprises a reflective film, the reflective film is located at a lower layer of the light guide plate, the light source is located at one side of the light guide plate, and the reflective film is used for reflecting light emitted from below the light guide plate.
3. The adjustable privacy display of claim 1, wherein the backlight module comprises a reflective film underlying the light guide plate, and the light source is disposed intermediate the reflective film and the light guide plate.
4. The adjustable privacy display of claim 1, wherein the backlight module comprises a diffuser film intermediate the light guide plate and the narrow viewing angle prismatic film for modifying the planar light.
5. The adjustable privacy display of claim 1, wherein the backlight module comprises a module frame, the module frame comprises a lower baffle and a side baffle, the lower baffle is located at a lower layer of the light guide plate, the side baffle is disposed at one side of the light guide plate, and the lower baffle is connected with the side baffle.
6. The adjustable privacy display of claim 1, wherein the viewing angle switching film is a monostable film polymerized from a nematic positive liquid crystal and an ultraviolet polymerizable colloid, the monostable film being transparent when powered on and foggy when powered off.
7. The adjustable privacy display of claim 1, wherein the viewing angle switching film is a bistable film formed by polymerizing smectic phase liquid crystal or cholesteric phase liquid crystal and an ultraviolet polymerizable colloid, the bistable film is switched between a transparent state and a foggy state when the power supply is turned on, and the state is maintained after the power supply is turned off.
8. The adjustable privacy display of claim 1, wherein the liquid crystal display panel is a conventional LCD liquid crystal display panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921389391.5U CN210142245U (en) | 2019-08-26 | 2019-08-26 | Adjustable peep-proof display |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921389391.5U CN210142245U (en) | 2019-08-26 | 2019-08-26 | Adjustable peep-proof display |
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| Publication Number | Publication Date |
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| CN210142245U true CN210142245U (en) | 2020-03-13 |
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| CN201921389391.5U Active CN210142245U (en) | 2019-08-26 | 2019-08-26 | Adjustable peep-proof display |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488518A (en) * | 2019-08-26 | 2019-11-22 | 天津佳视智晶光电科技有限公司 | A kind of adjustable peep-proof display |
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2019
- 2019-08-26 CN CN201921389391.5U patent/CN210142245U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488518A (en) * | 2019-08-26 | 2019-11-22 | 天津佳视智晶光电科技有限公司 | A kind of adjustable peep-proof display |
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Effective date of registration: 20220530 Address after: 452370 building 23, International Building Materials City, Xinmi City, Zhengzhou City, Henan Province Patentee after: Jiasheng applied materials (Henan) Co.,Ltd. Address before: 301700 No.7 Gaoxin Road, Wuqing District, Tianjin Patentee before: TIANJIN CAVISION PHOTOELECTRIC TECHNOLOGY Co.,Ltd. |
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