CN107167933B - Display, glasses equipment, control method, mobile terminal and display system - Google Patents
Display, glasses equipment, control method, mobile terminal and display system Download PDFInfo
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- CN107167933B CN107167933B CN201710574353.6A CN201710574353A CN107167933B CN 107167933 B CN107167933 B CN 107167933B CN 201710574353 A CN201710574353 A CN 201710574353A CN 107167933 B CN107167933 B CN 107167933B
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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
- G02F1/0136—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 for the control of polarisation, e.g. state of polarisation [SOP] control, polarisation scrambling, TE-TM mode conversion or separation
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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
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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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
Abstract
The invention provides a display, a glasses device, a control method, a mobile terminal and a display system, wherein the display comprises: the display panel is used for displaying an image to be displayed; the polarization conversion module is arranged on the light emitting side of the display panel and used for receiving a first alternating current driving signal with preset frequency, so that light emitted from the light emitting side of the display panel passes through the polarization conversion module to form polarized light, and the polarization direction of the polarized light is switched between a first polarization direction and a second polarization direction at the preset frequency; a first communication unit for transmitting information of the first alternating current driving signal to a glasses apparatus; the display system does not need to reduce the divergence angle of the light of the display, and achieves the aim of peeping prevention.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a display, glasses equipment, a control method, a mobile terminal and a display system.
Background
When people use the mobile phone in public places, the following situations are often encountered: the own mobile phone screen is exposed to the vision of strangers around without reservation, and the WeChat message, the short message, even the Paibao password and the bank card password of the mobile phone can be seen by the people around. The privacy and information security of the individual cannot be well guaranteed. Therefore, how to prevent others from peeping own mobile phone in public becomes a great problem. In the prior art, various protective films or shutters are used on a screen cover plate to control a certain divergence angle, and a mobile phone screen can be seen within a certain space angle by taking the right upper part of a mobile phone as a center.
However, when the cover plate is used for controlling the divergence of the screen light, a user can see the mobile phone only within the range, and the user experience is influenced; and the cover plate influences the light transmittance of the screen, which directly causes poor display effect of the mobile phone.
Disclosure of Invention
The embodiment of the invention provides a display, glasses equipment, a control method, a mobile terminal and a display system, and aims to solve the problem that a cover plate influences the light transmittance of a screen when the cover plate is used for controlling the divergence angle of screen light in the prior art.
In one aspect, an embodiment of the present invention provides a display, including:
the display panel is used for displaying an image to be displayed;
the polarization conversion module is arranged on the light emitting side of the display panel and used for receiving a first alternating current driving signal with preset frequency, so that light emitted from the light emitting side of the display panel passes through the polarization conversion module to form polarized light, and the polarization direction of the polarized light is switched between a first polarization direction and a second polarization direction at the preset frequency;
and the first communication unit is used for transmitting the information of the first alternating current driving signal to the glasses equipment.
On the other hand, an embodiment of the present invention further provides a control method for a peeping display, where the control method includes:
determining an image to be displayed of a display panel of the display;
when the display panel displays the image to be displayed, controlling a first alternating current driving signal with a preset frequency to be output to a polarization conversion module of the display;
the first alternating current driving signal controls light emitted from the light emitting side of the display panel to pass through the polarization conversion module to form polarized light, and the polarization direction of the polarized light is switched between the first polarization direction and the second polarization direction at a preset frequency.
On the other hand, an embodiment of the present invention further provides an eyeglass device, including:
the second communication unit is used for receiving information of a first alternating current driving signal sent by a display and determining the preset frequency of the first alternating current driving signal;
the third liquid crystal layer, the fifth electrode layer and the sixth electrode layer are respectively positioned at two opposite sides of the third liquid crystal layer;
when a third alternating current driving signal with a preset frequency is applied between the fifth electrode layer and the sixth electrode layer, liquid crystal molecules in the third liquid crystal layer are switched between a first state and a second state at the preset frequency; when the liquid crystal display panel is in a first state, the third liquid crystal layer is used for transmitting polarized light rays in a first polarization direction; and in the second state, the third liquid crystal layer is used for transmitting polarized light in the second polarization direction.
On the other hand, an embodiment of the present invention further provides a control method for an eyewear device as described above, where the control method includes:
when the glasses equipment receives information of a first alternating current driving signal sent by a display, a third alternating current driving signal with a preset frequency is controlled to be output to a third liquid crystal layer of the glasses equipment;
controlling the liquid crystal molecules in the third liquid crystal layer to switch between a first state and a second state at the preset frequency;
when the liquid crystal display panel is in a first state, the third liquid crystal layer is used for transmitting polarized light rays in a first polarization direction; and in the second state, the third liquid crystal layer is used for transmitting polarized light in the second polarization direction.
In another aspect, an embodiment of the present invention further provides a mobile terminal, including: a display as described above.
On the other hand, an embodiment of the present invention further provides a display system, including: a mobile terminal as described above, and an eyewear apparatus as described above.
In the display, the glasses device, the control method, the mobile terminal and the display system of the embodiment of the invention, the polarization direction of the polarized light output by the polarization conversion module is switched between the first polarization direction and the second polarization direction at the preset frequency by applying the first alternating current driving signal with the preset frequency to the polarization conversion module of the display; correspondingly, the liquid crystal molecules of the liquid crystal layer of the corresponding glasses device are switched between the first state and the second state at the preset frequency by applying a third alternating current driving signal with the preset frequency to the glasses device; the glasses device can receive the polarized light with the first polarization direction in the first state and receive the polarized light with the second polarization direction in the second state, so that the user can synchronously see the display content of the display through the glasses device, and other users without glasses and users with the glasses and with the liquid crystal molecules of which the change states are inconsistent with the display cannot see the display content of the display; therefore, the display system does not need to reduce the divergence angle of the display light, and realizes peeping prevention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a display according to an embodiment of the present invention;
FIG. 2 is a schematic view showing the arrangement of liquid crystal molecules to which no voltage is applied;
FIG. 3 is a schematic diagram showing the arrangement of voltage molecules after application of a voltage;
FIG. 4 is a schematic diagram illustrating the directions of emergent rays and original rays in a display according to an embodiment of the invention;
FIG. 5 is a flowchart illustrating steps of a method for controlling a display according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a first polarization direction in a display according to an embodiment of the invention;
FIG. 7 is a schematic diagram of a second polarization direction in a display according to an embodiment of the invention;
FIG. 8 is a schematic diagram of a first driving circuit in a display according to an embodiment of the invention;
fig. 9 is a flowchart illustrating steps of a method for controlling the eyewear device according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a display system according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of the operation of a display system provided by an embodiment of the invention;
fig. 12 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a display according to an embodiment of the present invention includes:
the display device comprises a display panel 1, wherein the display panel 1 is used for displaying an image to be displayed;
the polarization conversion module 2 is arranged on the light emitting side of the display panel 1, and the polarization conversion module 2 is used for receiving a first alternating current driving signal with a preset frequency, so that light emitted from the light emitting side of the display panel 1 passes through the polarization conversion module 2 to form polarized light, and the polarization direction of the polarized light is switched between a first polarization direction and a second polarization direction at the preset frequency;
and a first communication unit 3 for transmitting information of the first alternating current driving signal to the eyewear device.
In the above embodiments of the present invention, the information of the first ac driving signal at least includes frequency information of the first ac driving signal, and may further include a voltage magnitude of the first ac driving signal, and the like, and is not limited specifically herein.
The display provided in the above embodiment of the present invention utilizes the polarization principle of light, and utilizes the first ac driving signal to control the polarization state of light emitted from the light-emitting side of the display panel 1, so as to alternately generate polarized light in two polarization directions, a user can receive the polarized light in the two polarization directions by using a glasses device, the received polarized light in the two polarization directions can be restored to the original image to be displayed generated by the display panel in human eyes, and other people (people without corresponding glasses device and people whose glasses device is not glasses device interacting with the display) can see that the display is in a fuzzy state, thereby achieving the purpose of anti-peeping without reducing the divergence angle of light of the display.
Specifically, as shown in fig. 1, the display in the above embodiment of the present invention further includes:
the first driving circuit 4 is connected with the polarization conversion module 2, and the first driving circuit 4 is used for outputting the first alternating current driving signal to the polarization conversion module 2.
It should be noted that peeping prevention is not required at all times in the process of daily using the mobile terminal, for example, when a user looks up the mobile terminal in a room at night, no other person peeps the mobile terminal at this time, so that the display provided by the embodiment of the present invention may further be provided with an peeping prevention switch, which may be a physical switch or a virtual switch, for convenience of switching of application scenes, and is not limited specifically herein. When the peep-proof function needs to be opened, the peep-proof switch is closed, and then the peep-proof function of the display is started; and need not open the occasion of peeping-proof function, break off this peeping-proof switch, then close the peeping-proof function of this display, the polarized light that produces behind the light-emitting side of display panel 1 at this moment through polarization conversion module 2 only has a polarization direction, the content that shows on the display panel board can all be seen clearly to user or other users who use mobile terminal, and need not to wear corresponding glasses equipment, if the user has worn glasses equipment this moment, still need close the peeping-proof function of glasses equipment (also can realize through a switch, give unnecessary redundancy here.
Furthermore, the peep-proof switch may be disposed between the first driving circuit 4 and the polarization conversion module 2, that is, when the peep-proof switch is closed, the first ac driving signal output by the first driving circuit 4 can be output to the polarization conversion module 2; when the peep-proof switch is turned off, the first alternating current driving signal output by the first driving circuit 4 cannot be output to the polarization conversion module 2; or, the peep-proof switch may also be disposed inside the first driving circuit 4, that is, when the peep-proof switch is closed, the first driving circuit 4 may output the first alternating current driving signal; when the peep-proof switch is disconnected, the first driving circuit 4 stops outputting the first alternating current driving signal; the specific setting position of the peep-proof switch is not specifically limited, and all setting positions capable of realizing the starting and stopping of the peep-proof function are suitable for the embodiment of the invention.
Further, in the above embodiment of the present invention, as shown in fig. 1, the display panel 1 includes:
presetting a light source;
the polarizer 11, the array substrate 12, the first electrode layer, the first liquid crystal layer 13, the second electrode layer and the color filter 14 are sequentially stacked on the light emitting side of the preset light source; the polarization conversion module 2 is disposed on a side of the color filter 14 away from the polarizer 11.
In the embodiment of the present invention, the display panel 1 is a liquid crystal display layer, and the direction of the light emitted from the light-emitting side of the display panel 1 is changed by using the optical rotation principle of the liquid crystal.
Specifically, the principle of the optical rotation of liquid crystal is explained as follows:
as shown in fig. 2, the arrangement of the liquid crystal molecules is disordered when no voltage is applied; as shown in fig. 3, after a voltage is applied to the two electrode layers of the liquid crystal layer, the liquid crystal molecules will be regularly arranged in parallel. The parallel arrangement can form a light transmission long axis, and because the liquid crystal is anisotropic, the polarization strength and the direction of each point are different, so that the molecules rotate, the direction of the light transmission long axis is different from each point, and finally, according to the birefringence principle, the polarization state of incident light can be changed after passing through the light transmission axis, so that the direction of the light transmission axis can be changed by changing the voltage.
Specifically, as shown in fig. 1, a preset light source first forms a first light through the polarizer 11, the first light changes its polarization direction after passing through the array substrate 12, the first electrode layer, the first liquid crystal layer 13, and the second electrode layer, and finally forms an included angle a (as shown in fig. 4) between the light emitted from the color filter and the light transmission direction of the polarization conversion module 2 after passing through the color filter 14, so that the ratio of the intensity of the emergent light to the original light intensity is cos2 (a). Therefore, when the directions of the emergent light and the liquid crystal panel are coincident, the transmitted light is maximum, and when the directions of the emergent light and the liquid crystal panel are vertical, the transmitted light is 0; the intensity of the emergent light can be controlled by applying voltage to the two ends of the liquid crystal molecules.
Specifically, in the above embodiment of the present invention, as shown in fig. 1, the display further includes:
and the second driving circuit 5 is connected with the first electrode layer and the second electrode layer respectively, and the second driving circuit 5 is used for outputting a second alternating current driving signal to the first liquid crystal layer 13 so that the rotation direction of liquid crystal molecules in the first liquid crystal layer is changed. Specifically, the frequency of the second ac driving signal is the same as the frequency of the first ac driving signal, and both are the preset frequencies. The second alternating current driving signal drives the rotation direction of the liquid crystal molecules in the second liquid crystal layer to change, so that the rotation direction of the second liquid crystal layer is switched between a first polarization direction and a second polarization direction according to a preset frequency, and when the rotation direction of the second liquid crystal layer is the first polarization direction, the polarization direction of the polarized light output by the polarization conversion module 2 is also the first polarization direction; when the optical rotation direction of the second liquid crystal layer is the second polarization direction, the polarization direction of the polarized light output by the polarization conversion module 2 is also the second polarization direction.
Furthermore, in the above embodiment of the present invention, the polarization conversion module 2 includes:
the liquid crystal display device comprises a second liquid crystal layer, a third electrode layer and a fourth electrode layer, wherein the third electrode layer and the fourth electrode layer are respectively positioned on two opposite sides of the second liquid crystal layer; the first driving circuit 4 is connected to the third electrode layer and the fourth electrode layer, respectively.
The polarization conversion module is embodied as a liquid crystal panel. In the embodiment of the invention, the mode of liquid crystal panel + alternating current driving is used for replacing the polarizer in a single direction inherent in the prior art, so that the display can generate polarized light in two polarization directions. Specifically, the first ac driving signals are applied to the two ends of the liquid crystal panel, so that the liquid crystal panel can generate polarized light with two polarization directions, and the second ac driving signals with the same frequency control the optical rotation direction of the first liquid crystal layer 13 in the display panel 1, so that the anti-peeping display can alternately emit polarized light with two polarization directions. The receiving end (i.e. the glasses device) synchronously changes the polarization direction of the receiving end through the communication module of the display end (i.e. the display), so as to synchronously display the image to be displayed generated by the display panel 1.
In order to better achieve the purpose of peeping prevention, an embodiment of the present invention further provides a control method for a display as described above, as shown in fig. 5, the control method includes:
step 501, determining an image to be displayed of a display panel of the display;
step 502, when the display panel displays the image to be displayed, controlling a first alternating current driving signal with a preset frequency to be output to a polarization conversion module of the display;
the first alternating current driving signal controls light emitted from the light emitting side of the display panel to pass through the polarization conversion module to form polarized light, and the polarization direction of the polarized light is switched between the first polarization direction and the second polarization direction at a preset frequency.
Specifically, in the above embodiment of the present invention, the first ac driving signal is a bipolar square wave signal, and the bipolar square wave signal is switched between a positive voltage square wave and a negative voltage square wave at a preset frequency;
when the bipolar square wave signal is a positive voltage square wave, the positive voltage square wave controls the polarization direction of the polarized light to be a first polarization direction; that is, when the first driving circuit outputs the positive voltage square wave, the polarization direction of the polarization conversion module is the first polarization direction, and the polarization direction of the polarized light output from the polarization conversion module is the first polarization direction.
When the bipolar square wave signal is a negative voltage square wave, the negative voltage square wave controls the polarization direction of the polarized light to be switched to a second polarization direction; that is, when the first driving circuit outputs a negative voltage square wave, the polarization direction of the polarization conversion module is the second polarization direction, and the polarization direction of the polarized light output from the polarization conversion module is the second polarization direction.
In this case, the first polarization direction and the second polarization direction are perpendicular to each other. For example, the direction of the arrows in fig. 6 is a first polarization direction, while the direction of the arrows in fig. 7 is a second polarization direction.
As shown in fig. 8, the bipolar square wave signal can be obtained by the circuit configuration shown in fig. 8, and the first driving circuit includes: the triangular wave generating circuit is used for generating a preset triangular wave signal; the sine wave generating circuit is used for generating a sine signal with a preset frequency; and the voltage comparison circuit is respectively connected with the triangular wave generation circuit and the sine wave generation circuit and is used for comparing the preset triangular wave signal with the sine signal with the preset frequency and outputting a bipolar square wave signal with the preset frequency.
In summary, in the above embodiments of the present invention, the first ac driving signal is used to control the polarization state of the light emitted from the light-emitting side of the display panel 1, and the polarized light with two polarization directions is generated alternately, so that a user can receive the polarized light with two polarization directions by using a glasses device, the received polarized light with two polarization directions can be restored to the original image to be displayed generated by the display panel in human eyes, and other people (people without glasses device and people whose glasses device is not glasses device interacting with the display) see that the display is in a blurred state, thereby achieving the purpose of peeping prevention without reducing the divergence angle of the light of the display.
In order to better achieve the purpose of peeping prevention, an embodiment of the present invention further provides an eyeglass device, including:
the second communication unit is used for receiving information of a first alternating current driving signal sent by a display and determining the preset frequency of the first alternating current driving signal;
the third liquid crystal layer, the fifth electrode layer and the sixth electrode layer are respectively positioned at two opposite sides of the third liquid crystal layer;
when a third alternating current driving signal with a preset frequency is applied between the fifth electrode layer and the sixth electrode layer, liquid crystal molecules in the third liquid crystal layer are switched between a first state and a second state at the preset frequency; when the liquid crystal display panel is in a first state, the third liquid crystal layer is used for transmitting polarized light rays in a first polarization direction; and in the second state, the third liquid crystal layer is used for transmitting polarized light in the second polarization direction.
The glasses device provided by the embodiment of the invention can be obtained by directly embedding the third liquid crystal layer in the lenses of the ordinary glasses and adding the second communication unit on the glasses frame of the ordinary glasses, and has the advantages of convenience in carrying, low modification cost and the like.
Specifically, in the above embodiment of the present invention, the glasses apparatus further includes:
and the third driving circuit is connected with the fifth electrode layer and the sixth electrode layer respectively, and is used for outputting the third alternating current driving signal to the fifth electrode layer and the sixth electrode layer so as to change the rotation direction of liquid crystal molecules in the third liquid crystal layer.
Specifically, the interaction between the second communication unit and the first communication unit may be near field wireless communication such as bluetooth, near field communication NFC, and the like. After the second communication unit acquires the preset frequency of the first alternating current driving signal, the third driving circuit generates a third alternating current driving signal with the preset frequency and outputs the third alternating current driving signal with the preset frequency to the third liquid crystal layer, the third alternating current driving signal controls the rotation direction of liquid crystal molecules in the third liquid crystal layer to change, so that the liquid crystal molecules in the third liquid crystal layer are switched between a first state and a second state according to the preset frequency, the third liquid crystal layer is used for transmitting polarized light in the first polarization direction in the first state, and the third liquid crystal layer is used for transmitting polarized light in the second polarization direction in the second state; after the user wears the glasses device, the glasses device can receive polarized light in the first polarization direction and the second polarization direction, so that the image can be restored in human eyes, and other people (people without the glasses device and people with the glasses device which is not the glasses device interacting with the display) can see that the display is in a fuzzy state, so that the aim of preventing peeping is fulfilled without reducing the divergence angle of light rays of the display.
In order to better achieve the purpose of peeping prevention, an embodiment of the present invention further provides a control method of the glasses device as described above, as shown in fig. 9, the control method includes:
step 901, when the glasses device receives information of a first ac driving signal sent by a display, controlling a third ac driving signal with a preset frequency to be output to a third liquid crystal layer of the glasses device;
step 902, controlling the liquid crystal molecules in the third liquid crystal layer to switch between a first state and a second state at the preset frequency;
when the liquid crystal display panel is in a first state, the third liquid crystal layer is used for transmitting polarized light rays in a first polarization direction; and in the second state, the third liquid crystal layer is used for transmitting polarized light in the second polarization direction.
In summary, after the second communication unit obtains the preset frequency of the first ac driving signal, the third driving circuit generates a third ac driving signal with the preset frequency, and outputs the third ac driving signal with the preset frequency to the third liquid crystal layer, and the third ac driving signal controls the rotation direction of the liquid crystal molecules in the third liquid crystal layer to change, so that the liquid crystal molecules in the third liquid crystal layer are switched between a first state and a second state at the preset frequency, where the third liquid crystal layer is used for transmitting the polarized light in the first polarization direction, and the third liquid crystal layer is used for transmitting the polarized light in the second polarization direction; after the user wears the glasses device, the glasses device can receive polarized light in the first polarization direction and the second polarization direction, so that the image can be restored in human eyes, and other people (people without the glasses device and people with the glasses device which is not the glasses device interacting with the display) can see that the display is in a fuzzy state, so that the aim of preventing peeping is fulfilled without reducing the divergence angle of light rays of the display.
In order to better achieve the above anti-peeping purpose, an embodiment of the present invention further provides a mobile terminal, including: a display as described above.
Specifically, in the foregoing embodiment of the present invention, the mobile terminal further includes:
the image determining module is used for determining an image to be displayed of a display panel of the display;
the signal output module is used for controlling a first alternating current driving signal with a preset frequency to be output to the polarization conversion module of the display when the display panel displays the image to be displayed;
the first alternating current driving signal controls light emitted from the light emitting side of the display panel to pass through the polarization conversion module to form polarized light, and the polarization direction of the polarized light is switched between the first polarization direction and the second polarization direction at a preset frequency.
Preferably, the first ac driving signal is a bipolar square wave signal, and the bipolar square wave signal is switched between a positive voltage square wave and a negative voltage square wave at a predetermined frequency;
when the bipolar square wave signal is a positive voltage square wave, the positive voltage square wave controls the polarization direction of the polarized light to be a first polarization direction;
when the bipolar square wave signal is a negative voltage square wave, the negative voltage square wave controls the polarization direction of the polarized light to be switched to a second polarization direction.
It should be noted that, the mobile terminal provided in the embodiments of the present invention is a mobile terminal including the display, and all embodiments of the display are applicable to the mobile terminal, and can achieve the same beneficial effects.
In order to better achieve the above anti-peeping purpose, an embodiment of the present invention further provides a display system, as shown in fig. 10, including: a mobile terminal 60 as described above, and an eyewear apparatus 70 as described above.
As shown in fig. 11, which is a schematic diagram of the operation of the display system according to the embodiment of the present invention, the mobile terminal drives the polarization conversion module, and sends information such as frequency of the driving voltage to the glasses device through the communication unit for receiving, and after the glasses device receives the information, the liquid crystal panel of the glasses device is driven by the voltage with the same frequency, so that the liquid crystal panel changes the polarization direction with the same frequency, and the display content can be synchronously viewed. Thus, the anti-peeping purpose is achieved without reducing the divergence angle of the screen light.
It should be noted that, the display system provided in the embodiment of the present invention is a display system including the mobile terminal and the eyewear device, and all embodiments of the mobile terminal and all embodiments of the eyewear device are applicable to the display system and can achieve the same beneficial effects.
An embodiment of the present invention further provides a mobile terminal, as shown in fig. 12. Specifically, the mobile terminal in fig. 12 may be a mobile phone, a tablet computer, a Personal Digital Assistant (PDA), or a vehicle-mounted computer.
The mobile terminal in fig. 12 includes a display as described above, the display including: the display panel is used for displaying an image to be displayed;
the polarization conversion module is arranged on the light emitting side of the display panel and used for receiving a first alternating current driving signal with preset frequency, so that light emitted from the light emitting side of the display panel passes through the polarization conversion module to form polarized light, and the polarization direction of the polarized light is switched between a first polarization direction and a second polarization direction at the preset frequency;
and the first communication unit is used for transmitting the information of the first alternating current driving signal to the glasses equipment.
The first driving circuit is connected with the polarization conversion module and used for outputting the first alternating current driving signal to the polarization conversion module.
Presetting a light source; the polaroid, the array substrate, the first electrode layer, the first liquid crystal layer, the second electrode layer and the color filter are sequentially overlapped on the light emergent side of the preset light source; the polarization conversion module is arranged on one side of the color filter, which is far away from the polarizer.
And the second driving circuit is respectively connected with the first electrode layer and the second electrode layer, and is used for outputting a second alternating current driving signal to the first liquid crystal layer so as to change the rotation direction of liquid crystal molecules in the first liquid crystal layer.
The liquid crystal display device comprises a second liquid crystal layer, a third electrode layer and a fourth electrode layer, wherein the third electrode layer and the fourth electrode layer are respectively positioned on two opposite sides of the second liquid crystal layer; the first driving circuit is respectively connected with the third electrode layer and the fourth electrode layer.
Further, the mobile terminal in fig. 12 further includes a Radio Frequency (RF) circuit 1210, a memory 1220, an input unit 1230, a display unit 1240, a processor 1260, an audio circuit 1270, a Wi Fi (wireless fidelity) module 1280, and a power supply 1290.
The input unit 1230 may be used, among other things, to receive numeric or character information input by a user and to generate signal inputs related to user settings and function control of the mobile terminal. Specifically, in the embodiment of the present invention, the input unit 1230 may include a touch panel 1231. The touch panel 1231, also referred to as a touch screen, can collect touch operations of a user (e.g., operations of the user on the touch panel 1231 by using a finger, a stylus pen, or any other suitable object or accessory) thereon or nearby, and drive the corresponding connection device according to a preset program. Alternatively, the touch panel 1231 may include two portions, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device and converts it to touch point coordinates, which are provided to the processor 1260 and can receive commands from the processor 1260 for execution. In addition, the touch panel 1231 may be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1231, the input unit 1230 may also include other input devices 1232, and the other input devices 1232 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.
Among them, the display unit 1240 may be used to display information input by a user or information provided to the user and various menu interfaces of the mobile terminal. The display unit 1240 may include a display panel 1241, and optionally, the display panel 1241 may be configured in the form of an LCD or an Organic Light-Emitting Diode (OLED), or the like.
It should be noted that touch panel 1231 can overlie display panel 1241 to form a touch display screen, and when the touch display screen detects a touch operation thereon or thereabout, the touch display screen can communicate to processor 1260 to determine the type of touch event, and processor 1260 can then provide a corresponding visual output on the touch display screen based on the type of touch event.
The touch display screen comprises an application program interface display area and a common control display area. The arrangement modes of the application program interface display area and the common control display area are not limited, and can be an arrangement mode which can distinguish two display areas, such as vertical arrangement, left-right arrangement and the like. The application interface display area may be used to display an interface of an application. Each interface may contain at least one interface element such as an icon and/or widget desktop control for an application. The application interface display area may also be an empty interface that does not contain any content. The common control display area is used for displaying controls with high utilization rate, such as application icons like setting buttons, interface numbers, scroll bars, phone book icons and the like.
The processor 1260 is a control center of the mobile terminal, connects various parts of the entire mobile phone using various interfaces and lines, and performs various functions of the mobile terminal 1200 and processes data by operating or executing software programs and/or modules stored in the first memory 1221 and calling data stored in the second memory 1222, thereby integrally monitoring the mobile terminal. Optionally, processor 1260 may include one or more processing units.
In the embodiment of the present invention, the processor 1260 is configured to determine the image to be displayed on the display panel of the display by calling the software program and/or module stored in the first memory 1221 and/or the data stored in the second memory 1222; when the display panel displays the image to be displayed, controlling a first alternating current driving signal with a preset frequency to be output to a polarization conversion module of the display; the first alternating current driving signal controls light emitted from the light emitting side of the display panel to pass through the polarization conversion module to form polarized light, and the polarization direction of the polarized light is switched between the first polarization direction and the second polarization direction at a preset frequency.
Optionally, in another embodiment of the present invention, the first ac driving signal is a bipolar square wave signal, and the bipolar square wave signal switches between a positive voltage square wave and a negative voltage square wave at a preset frequency, and the processor 1260 is further configured to: when the bipolar square wave signal is a positive voltage square wave, the positive voltage square wave controls the polarization direction of the polarized light to be a first polarization direction; when the bipolar square wave signal is a negative voltage square wave, the negative voltage square wave controls the polarization direction of the polarized light to be switched to a second polarization direction.
In the mobile terminal of the embodiment of the invention, the polarization direction of the polarized light output by the polarization conversion module is switched between the first polarization direction and the second polarization direction at the preset frequency by applying the first alternating current driving signal with the preset frequency to the polarization conversion module of the display of the mobile terminal; correspondingly, the liquid crystal molecules of the liquid crystal layer of the corresponding glasses device are switched between the first state and the second state at the preset frequency by applying a third alternating current driving signal with the preset frequency to the glasses device; the glasses device can receive the polarized light with the first polarization direction in the first state and receive the polarized light with the second polarization direction in the second state, so that the user can synchronously see the display content of the display through the glasses device, and other users without glasses and users with the glasses and with the liquid crystal molecules of which the change states are inconsistent with the display cannot see the display content of the display; therefore, the display system does not need to reduce the divergence angle of the display light, and realizes peeping prevention.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (14)
1. A display, comprising:
the display panel is used for displaying an image to be displayed;
the polarization conversion module is arranged on the light emitting side of the display panel and used for receiving a first alternating current driving signal with preset frequency, so that light emitted from the light emitting side of the display panel passes through the polarization conversion module to form polarized light, and the polarization direction of the polarized light is switched between a first polarization direction and a second polarization direction at the preset frequency;
and the first communication unit is used for transmitting the information of the first alternating current driving signal to the glasses equipment.
2. The display of claim 1, further comprising:
the first driving circuit is connected with the polarization conversion module and used for outputting the first alternating current driving signal to the polarization conversion module.
3. The display of claim 1, wherein the display panel comprises:
presetting a light source;
the polaroid, the array substrate, the first electrode layer, the first liquid crystal layer, the second electrode layer and the color filter are sequentially overlapped on the light emergent side of the preset light source;
the polarization conversion module is arranged on one side of the color filter, which is far away from the polarizer.
4. The display of claim 3, further comprising:
and the second driving circuit is respectively connected with the first electrode layer and the second electrode layer, and is used for outputting a second alternating current driving signal to the first liquid crystal layer so as to change the rotation direction of liquid crystal molecules in the first liquid crystal layer.
5. The display of claim 2, wherein the polarization conversion module comprises:
the liquid crystal display device comprises a second liquid crystal layer, a third electrode layer and a fourth electrode layer, wherein the third electrode layer and the fourth electrode layer are respectively positioned on two opposite sides of the second liquid crystal layer;
the first driving circuit is respectively connected with the third electrode layer and the fourth electrode layer.
6. A method of controlling a display as claimed in any one of claims 1 to 5, characterized in that the method of controlling comprises:
determining an image to be displayed of a display panel of the display;
when the display panel displays the image to be displayed, controlling a first alternating current driving signal with a preset frequency to be output to a polarization conversion module of the display;
the first alternating current driving signal controls light emitted from the light emitting side of the display panel to pass through the polarization conversion module to form polarized light, and the polarization direction of the polarized light is switched between the first polarization direction and the second polarization direction at a preset frequency.
7. The control method according to claim 6, wherein the first AC drive signal is a bipolar square wave signal, and the bipolar square wave signal is switched between a positive voltage square wave and a negative voltage square wave at a predetermined frequency;
when the bipolar square wave signal is a positive voltage square wave, the positive voltage square wave controls the polarization direction of the polarized light to be a first polarization direction;
when the bipolar square wave signal is a negative voltage square wave, the negative voltage square wave controls the polarization direction of the polarized light to be switched to a second polarization direction.
8. An eyewear apparatus, comprising:
the second communication unit is used for receiving information of a first alternating current driving signal sent by a display and determining the preset frequency of the first alternating current driving signal;
the third liquid crystal layer, the fifth electrode layer and the sixth electrode layer are respectively positioned at two opposite sides of the third liquid crystal layer;
when a third alternating current driving signal with a preset frequency is applied between the fifth electrode layer and the sixth electrode layer, liquid crystal molecules in the third liquid crystal layer are switched between a first state and a second state at the preset frequency; when the liquid crystal display panel is in a first state, the third liquid crystal layer is used for transmitting polarized light rays in a first polarization direction; and in the second state, the third liquid crystal layer is used for transmitting polarized light in the second polarization direction.
9. The eyewear apparatus of claim 8, further comprising:
and the third driving circuit is connected with the fifth electrode layer and the sixth electrode layer respectively, and is used for outputting the third alternating current driving signal to the fifth electrode layer and the sixth electrode layer so as to change the rotation direction of liquid crystal molecules in the third liquid crystal layer.
10. A control method of an eyeglass apparatus according to claim 8 or 9, characterized in that the control method comprises:
when the glasses equipment receives information of a first alternating current driving signal sent by a display, a third alternating current driving signal with a preset frequency is controlled to be output to a third liquid crystal layer of the glasses equipment;
controlling the liquid crystal molecules in the third liquid crystal layer to switch between a first state and a second state at the preset frequency;
when the liquid crystal display panel is in a first state, the third liquid crystal layer is used for transmitting polarized light rays in a first polarization direction; and in the second state, the third liquid crystal layer is used for transmitting polarized light in the second polarization direction.
11. A mobile terminal, comprising: a display as claimed in any one of claims 1 to 5.
12. The mobile terminal of claim 11, wherein the mobile terminal further comprises:
the image determining module is used for determining an image to be displayed of a display panel of the display;
the signal output module is used for controlling a first alternating current driving signal with a preset frequency to be output to the polarization conversion module of the display when the display panel displays the image to be displayed;
the first alternating current driving signal controls light emitted from the light emitting side of the display panel to pass through the polarization conversion module to form polarized light, and the polarization direction of the polarized light is switched between the first polarization direction and the second polarization direction at a preset frequency.
13. The mobile terminal of claim 12, wherein the first ac driving signal is a bipolar square wave signal, and the bipolar square wave signal switches between a positive voltage square wave and a negative voltage square wave at a predetermined frequency;
when the bipolar square wave signal is a positive voltage square wave, the positive voltage square wave controls the polarization direction of the polarized light to be a first polarization direction;
when the bipolar square wave signal is a negative voltage square wave, the negative voltage square wave controls the polarization direction of the polarized light to be switched to a second polarization direction.
14. A display system, comprising: a mobile terminal as claimed in any of claims 11 to 13, and an eyewear apparatus as claimed in claim 8 or 9.
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| CN110837319B (en) * | 2019-10-31 | 2024-02-20 | 华勤技术股份有限公司 | Visual angle adjusting method and electronic equipment |
| CN111308717B (en) * | 2020-03-31 | 2022-03-25 | 京东方科技集团股份有限公司 | Display module, display method and display device |
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