CN112485942A - Display with elastic polarizing film - Google Patents
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- CN112485942A CN112485942A CN202011415491.8A CN202011415491A CN112485942A CN 112485942 A CN112485942 A CN 112485942A CN 202011415491 A CN202011415491 A CN 202011415491A CN 112485942 A CN112485942 A CN 112485942A
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- polarizing film
- display
- polarized
- polarizing
- elastic
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C11/00—Non-optical adjuncts; Attachment thereof
- G02C11/10—Electronic devices other than hearing aids
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/12—Polarisers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/82—Protecting input, output or interconnection devices
- G06F21/84—Protecting input, output or interconnection devices output devices, e.g. displays or monitors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Acoustics & Sound (AREA)
- Otolaryngology (AREA)
- Computer Security & Cryptography (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a display with an elastic polarizing film, which comprises a display shell, a backlight lamp, a liquid crystal display, a polarizing film and polarizing glasses, wherein the polarizing glasses are consistent with the polarizing angle of the polarizing film, a touch switch is arranged at the position, which is in contact with a human body, of a support of the polarizing glasses when the display is worn, the polarizing film is the elastic polarizing film, the polarizing film is attached to and covers the liquid crystal display, a stretching roller is arranged on one side of the display shell, the stretching roller is driven by a motor, one end of the polarizing film is connected onto the stretching roller, the other end of the polarizing film is fixed onto the display shell, the direction of stretching the polarizing film by the stretching roller is vertical to the orientation direction of the polarizing film, the motor is connected with a first. The computer display is suitable for being used in an environment where a display picture needs to be protected, and can be directly observed by naked eyes in the environment where the display picture does not need to be protected, and the two states are automatically switched, so that two using requirements are met.
Description
Technical Field
The invention belongs to the technical field of displays, and particularly relates to a display with an elastic polarizing film.
Background
In a public office working environment, due to the fact that people are mixed, people can easily see some confidential document materials if the confidential document materials need to be consulted. In order to ensure the security, the document data must be consulted in a separate compartment, and the privacy effect of the display is poor. The prior computer display generally comprises a backlight lamp, a liquid crystal screen and a polarizing film, an image displayed on the display can be directly observed after being filtered by the polarizing film, if a person can only see a white screen by naked eyes without removing the polarizing film, and the image to be displayed on the display cannot be directly observed, according to the principle, a display for preventing other people from directly seeing a displayed picture on the display is developed, the display has no polarizing film, the picture on the display can be seen only when the display is worn by glasses with the polarizing film, for example, a peep-proof display device disclosed in CN20684864U, the display can be seen only when the display is worn by the polarizing glasses, but the display device is always kept in a state that the display can not be directly observed by naked eyes, the picture displayed by the screen can not be directly communicated with the person when non-confidential documents are processed, and the display picture can be seen by other people when the other people wear the same polarizing glasses, therefore, the use of the device has certain limitation and cannot meet different use requirements.
Disclosure of Invention
The invention provides a display with an elastic polarizing film, aiming at the defects of the prior art, the computer display can be switched between a confidential state and an unsecured state, and can be automatically switched to the confidential state after wearing polarized glasses, thereby meeting different use requirements.
In order to solve the technical problem, the invention is solved by the following technical scheme: a display with an elastic polarizing film comprises a display housing, a backlight, a liquid crystal panel, a polarizing film and polarizing glasses with a polarizing angle consistent with the polarizing film, a touch switch is arranged at the position of the bracket of the polarized glasses, which is in contact with the human body when the polarized glasses are worn, the polarized film is an elastic polarized film, the polarizing film is attached to and covers the liquid crystal screen, one side of the display shell is provided with a stretching roller, the stretching roller is driven by a motor, one end of the polarizing film is connected to the stretching roller, the other end of the polarizing film is fixed on the display shell, the direction of stretching the polarizing film by the stretching roller is vertical to the orientation direction of the polarizing film, the motor is connected with a first control chip, the first control chip is connected with the tact switch in a wired or wireless way, when the tact switch is pressed, the motor rotates positively to drive the stretching roller to stretch the polarizing film; when the tact switch is not pressed, the motor reversely rotates to drive the stretching roller to reset the polarizing film. When the computer display is worn on the polarized glasses, a human body touches the tact switch, the first control chip controls the motor to rotate forward to drive the stretching roller to stretch the polarized film, the stretching direction is vertical to the orientation direction of the polarized film, the orientation direction on the polarized film becomes disordered, the polarized film loses the polarization property, at the moment, a person who does not wear the polarized glasses can not directly observe an image displayed on the display by naked eyes, when the polarized glasses are taken off, the tact switch is not stressed any more, the first control chip controls the motor to rotate reversely to reset the polarized film, the orientation direction on the polarized film is consistent again, the polarized film obtains the polarization property again, the person can directly observe the image displayed on the display by naked eyes, automatic adjustment and conversion are realized, the computer display can be used in an environment where the display picture needs to be protected, and can be directly observed by naked eyes in an environment where the display picture does not need to be protected, the two states realize automatic switching, and two use requirements are met.
In the above-described aspect, preferably, a transparent protection plate is provided on the display housing on a front side of the polarizing film. Dust is prevented from entering between the polarizing film and the liquid crystal panel by the transparent protection plate.
In the above technical scheme, preferably, the stretching roller is in transmission connection with the motor through a worm and gear mechanism. Because the stretching roller needs larger torsion force for stretching, the self-locking can be realized through the self-locking of the worm gear mechanism, and the stretching roller is prevented from rotating due to the restoring force of the polarizing film after the motor stops rotating.
In the above technical scheme, preferably, the first control chip is connected with a first bluetooth transmission module, the bracket of the polarized glasses is provided with a power supply, a second control chip, a second bluetooth transmission module and the tact switch, which are connected with each other, and the first bluetooth transmission module is wirelessly connected with the second bluetooth transmission module. Adopt this structure to pass through bluetooth wireless transmission, can be so that do not have the restriction of wire when wearing polarisation glasses, it is more convenient to use and carry polarisation glasses.
In the above technical solution, preferably, the tact switch is connected to the first control chip through a wire. By adopting the structure, a complex structure does not need to be arranged on the polarized glasses, and the cost is low.
In the above technical solution, preferably, the tact switch is disposed inside a temple of the polarized glasses. Adopt this structure can guarantee to dabber the switch and can be pressed when wearing polarized light glasses.
In the above technical solution, preferably, the polarizing film includes a PVA layer located in the middle and TPU layers attached to both sides, and the PVA layer is stretched by 3 to 5 times after being coated with an aqueous iodine solution and oriented. The TPU layers attached to the two sides of the PVA layer can play a role in water prevention and can effectively improve the stretching recovery performance of the polarizing film.
Compared with the prior art, the invention has the following beneficial effects: when the computer display is worn on the polarized glasses, a human body touches the tact switch, the first control chip controls the motor to rotate forward to drive the stretching roller to stretch the polarized film, the stretching direction is vertical to the orientation direction of the polarized film, the orientation direction on the polarized film becomes disordered, the polarized film loses the polarization property, at the moment, a person who does not wear the polarized glasses can not directly observe an image displayed on the display by naked eyes, when the polarized glasses are taken off, the tact switch is not stressed any more, the first control chip controls the motor to rotate reversely to reset the polarized film, the orientation direction on the polarized film is consistent again, the polarized film obtains the polarization property again, the person can directly observe the image displayed on the display by naked eyes, automatic adjustment and conversion are realized, the computer display can be used in an environment where the display picture needs to be protected, and can be directly observed by naked eyes in an environment where the display picture does not need to be protected, the two states realize automatic switching, and two use requirements are met.
Drawings
Fig. 1 is a schematic overall structure diagram of the wired connection between the polarized glasses and the display according to the embodiment of the present invention.
Fig. 2 is a schematic overall structure diagram of the polarized glasses and the display in the wireless connection embodiment of the invention.
Fig. 3 is a partial sectional structural schematic diagram of an embodiment of the invention.
Fig. 4 is a schematic cross-sectional structure view of a polarizing film in an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings: referring to fig. 1 to 4, a display with an elastic polarizing film includes a display housing 1, a backlight 2, a liquid crystal panel 3, a polarizing film 4 and polarizing glasses 5 having a polarizing angle corresponding to the polarizing angle of the polarizing film 4, a tact switch 51 is disposed at a position of a holder of the polarizing glasses 5 contacting a human body when worn, the polarizing film 4 is an elastic polarizing film, the polarizing film 4 is attached to and covers the liquid crystal panel 3, a stretching roller 6 is disposed at a top of the display housing 1, the stretching roller 6 is enclosed in a cavity at the top of the display housing 1, a channel for passing the polarizing film 4 is disposed at a bottom of the cavity, the stretching roller 6 is driven by a motor 7, one end of the polarizing film 4 is connected to the stretching roller 6, the other end of the polarizing film 4 is fixed to the display housing 1, a direction for stretching the polarizing film 4 by the stretching roller 6 is perpendicular to an orientation direction of the polarizing film 4, and a width of, the motor 7 is connected with a first control chip 71, the first control chip 71 is connected with the tact switch 51 in a wired or wireless mode, and when the tact switch 51 is pressed, the motor 7 rotates positively to drive the stretching roller 6 to stretch the polarizing film 4; when the tact switch 51 is not pressed, the motor 7 reversely rotates to drive the stretching roller 6 to reset the polarizing film 4.
The existing polarizer principle is iodine molecules adsorbed on a PVA film, the iodine molecules are disordered initially, the iodine molecules on the PVA film are straightened and distributed orderly after the PVA film extends towards one direction, the stretched PVA film has polarization, and the iodine molecules can be restored to the original disorder and lose the polarization after the PVA film is stretched at an angle in the vertical polarization direction.
When the computer display wears the polarized glasses 5, a human body touches the tact switch 51, the first control chip 71 controls the motor 7 to rotate forward to drive the stretching roller 6 to stretch the polarized film 4, the stretching direction is perpendicular to the orientation direction of the polarized film 4, the stretching distance is determined according to the size of the polarized film 4 and the elasticity of the polarized film 4, the orientation direction on the polarized film 4 is disordered, the polarized film 4 loses the polarization property, at the moment, the image displayed on the display cannot be directly observed by the naked eyes of a person who does not wear the polarized glasses 5, when the polarized glasses 5 are taken off, the tact switch 51 is not stressed any more, the first control chip 71 controls the motor 7 to rotate reversely, so that the polarized film 4 is reset, the orientation direction on the polarized film 4 is consistent again, the polarized film 4 obtains the polarization property again, the image displayed on the display can be directly observed by the naked eyes of the person, and automatic adjustment and conversion, the device can be suitable for being used in an environment where a display picture needs to be protected, and can be directly observed by naked eyes in the environment where the display picture does not need to be protected, so that the two states are automatically switched, and two use requirements are met.
A transparent protection plate 9 is provided on the display housing 1 on the front side of the polarizing film 4, and dust is prevented from entering between the polarizing film 4 and the liquid crystal panel 3 by the transparent protection plate 9.
The stretching roller 6 is in transmission connection with the motor 7 through a worm gear mechanism 10. The output shaft of the motor 7 is connected with a worm, the end part of the stretching roller 6 is connected with a worm wheel, the worm wheel can rotate in the rotating process of the motor 7, the stretching roller 6 needs large torsion force due to stretching, self-locking can be achieved through the self-locking of the worm wheel and worm mechanism 10, and the stretching roller 6 is prevented from rotating due to the restoring force of the polarizing film 4 after the motor 7 stops rotating.
Referring to fig. 1, the tact switch 51 is connected to the first control chip 71 through a wire 8. The embodiment that the polarized glasses 5 are connected with the display in a wired mode is adopted, a complex structure does not need to be installed on the polarized glasses 5, and cost is low.
Referring to fig. 2, the first control chip 71 is connected to a first bluetooth transmission module 72, the bracket of the polarized glasses 5 is provided with a power source 52, a second control chip 53, a second bluetooth transmission module 54 and a tact switch 51 which are connected with each other, and the first bluetooth transmission module 72 is wirelessly connected with the second bluetooth transmission module 54. Adopt this structure to pass through bluetooth wireless transmission, can be so that do not have the restriction of wire when wearing polarisation glasses, it is more convenient to use and carry polarisation glasses. For polarized light glasses 5 and the embodiment that the display passes through bluetooth wireless connection, adopt this structure to pass through bluetooth wireless transmission, can make the restriction that does not have the wire when wearing polarized light glasses 5, it is more convenient to use and carry polarized light glasses 5. When the tact switch 51 is pressed or not pressed, the signal is transmitted to the second control chip 53, the second control chip 53 controls the second bluetooth transmission module 54 to send a signal to the first bluetooth transmission module 72, the first bluetooth transmission module 72 transmits a signal to the first control chip 71, and the first control chip 71 controls the motor 7 to rotate so as to stretch or reset the polarizing film 4.
The following structure is applied to the embodiment in which the polarized glasses are wired to the display, and is also applied to the embodiment in which the polarized glasses are wirelessly connected to the display.
The tact switch 51 is provided inside the temple 55 of the polarized glasses 5. With this structure, it can be ensured that the tact switch 51 can be pressed when the polarized glasses 5 are worn.
The polarizing film 4 includes a PVA layer 41 in the middle and TPU layers 42 attached to both sides, and the PVA layer 41 is stretched 3 to 5 times in orientation after being coated with an aqueous iodine solution. In a general polarizing film, TAC is attached to two sides of a PVA layer, and TPU layers 41 are attached to two sides of the PVA layer 42, so that a waterproof effect can be achieved, and the stretch recovery performance of the polarizing film 4 can be effectively improved.
The processing method of the polarizing film comprises the following steps: the PVA film is dipped in an iodine-containing staining solution for staining, and the mixing amount of iodine is 0.1 to 0.5 weight part relative to 100 weight parts of water. To increase the solubility of iodine in water, iodide may be added to the aqueous iodine solution. The iodide may be potassium iodide, lithium iodide, sodium iodide, etc. The compounding amount of the iodide is 0.1 part by weight to 10 parts by weight with respect to 100 parts by weight of water. The liquid temperature of the dyeing liquid is 20-50 ℃ during dyeing. And then stretching the dyed PVA film in boric acid aqueous solution by 3-5 times, drying, and attaching a transparent TPU film on the stretched PVA film through a pressure-sensitive adhesive 43 to finish processing.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (7)
1. A display with an elastic polarizing film, comprising a display housing (1), a backlight (2), a liquid crystal panel (3), a polarizing film (4), and polarizing glasses (5) that conform to a polarizing angle of the polarizing film (4), characterized in that: a touch switch (51) is arranged at a position contacted with a human body when the glasses are worn on a support of the polarized glasses (5), the polarized film (4) is an elastic polarized film, the polarized film (4) is attached to and covered on the liquid crystal screen (3), a stretching roller (6) is arranged on one side of the display shell (1), the stretching roller (6) is driven by a motor (7), one end of the polarized film (4) is connected to the stretching roller (6), the other end of the polarized film (4) is fixed on the display shell (1), the direction of the stretching roller (6) for stretching the polarized film (4) is vertical to the orientation direction of the polarized film (4), the motor (7) is connected with a first control chip (71), the first control chip (71) is connected with the touch switch (51) in a wired or wireless mode, when the touch switch (51) is pressed, the motor (7) rotates forward to drive the stretching roller (6) to stretch the polarizing film (4); when the tact switch (51) is not pressed, the motor (7) reversely drives the stretching roller (6) to reset the polarizing film (4).
2. A display having an elastic polarizing film according to claim 1, wherein: a transparent protective plate (9) is arranged on the display shell (1) and positioned on the front side of the polarizing film (4).
3. A display having an elastic polarizing film according to claim 1, wherein: the stretching roller (6) is in transmission connection with the motor (7) through a worm gear mechanism (10).
4. A display having an elastic polarizing film according to claim 1, wherein: the first control chip (71) is connected with a first Bluetooth transmission module (72), a power supply (52), a second control chip (53), a second Bluetooth transmission module (54) and a light touch switch (51) which are connected with each other are arranged on a support of the polarized glasses (5), and the first Bluetooth transmission module (72) is in wireless connection with the second Bluetooth transmission module (54).
5. A display having an elastic polarizing film according to claim 1, wherein: the light touch switch (51) is connected with the first control chip (71) through a lead (8).
6. A display having an elastic polarizing film according to claim 1, wherein: the tact switch (51) is arranged on the inner side of a temple (55) of the polarized glasses (5).
7. A display having an elastic polarizing film according to claim 1, wherein: the polarizing film (4) comprises a PVA layer (41) in the middle and TPU layers (42) on two sides, wherein the PVA layer (41) is stretched for 3-5 times orientation after being coated by iodine aqueous solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011415491.8A CN112485942A (en) | 2020-12-07 | 2020-12-07 | Display with elastic polarizing film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011415491.8A CN112485942A (en) | 2020-12-07 | 2020-12-07 | Display with elastic polarizing film |
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| Publication Number | Publication Date |
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| CN112485942A true CN112485942A (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011415491.8A Pending CN112485942A (en) | 2020-12-07 | 2020-12-07 | Display with elastic polarizing film |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2615697Y (en) * | 2003-04-14 | 2004-05-12 | 张立麒 | Antipeeping liquid crystal display |
| CN1965251A (en) * | 2004-04-05 | 2007-05-16 | 日东电工株式会社 | Polarizer, polarizing plate, optical film and image display |
| CN104090374A (en) * | 2014-06-18 | 2014-10-08 | 京东方科技集团股份有限公司 | Peep-preventing display system and method, peep-preventing displayer and peep-preventing glasses |
| CN204389846U (en) * | 2015-02-20 | 2015-06-10 | 何远薇 | The automatic secret protection display of polarization type |
| CN108885294A (en) * | 2016-03-29 | 2018-11-23 | 日东电工株式会社 | Flexible polarizing coating, its manufacturing method and image display device |
-
2020
- 2020-12-07 CN CN202011415491.8A patent/CN112485942A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2615697Y (en) * | 2003-04-14 | 2004-05-12 | 张立麒 | Antipeeping liquid crystal display |
| CN1965251A (en) * | 2004-04-05 | 2007-05-16 | 日东电工株式会社 | Polarizer, polarizing plate, optical film and image display |
| CN104090374A (en) * | 2014-06-18 | 2014-10-08 | 京东方科技集团股份有限公司 | Peep-preventing display system and method, peep-preventing displayer and peep-preventing glasses |
| CN204389846U (en) * | 2015-02-20 | 2015-06-10 | 何远薇 | The automatic secret protection display of polarization type |
| CN108885294A (en) * | 2016-03-29 | 2018-11-23 | 日东电工株式会社 | Flexible polarizing coating, its manufacturing method and image display device |
Non-Patent Citations (3)
| Title |
|---|
| 左亚曼，邱万琦，刘正义，龚建勋: "聚乙烯醇（PVA）偏光膜的制备及性能研究", 《材料开发与应用》 * |
| 范志新: "偏光片知识讲座 第四讲 偏光片的结构和制造", 《现代显示》 * |
| 赖延清，蒋良兴，田忠良，刘萍，李劼: "液晶显示器用偏光片", 《激光与光电子学进展》 * |
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Application publication date: 20210312 |
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