CN113219717B - Liquid crystal display panel and liquid crystal display device - Google Patents

Liquid crystal display panel and liquid crystal display device Download PDF

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Publication number
CN113219717B
CN113219717B CN202110548181.1A CN202110548181A CN113219717B CN 113219717 B CN113219717 B CN 113219717B CN 202110548181 A CN202110548181 A CN 202110548181A CN 113219717 B CN113219717 B CN 113219717B
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China
Prior art keywords
liquid crystal
ultraviolet
light source
light
crystal display
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CN113219717A (en
Inventor
史轩
田迎辉
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Tianjin Zhirong Innovation Technology Development Co ltd
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Tianjin Zhirong Innovation Technology Development Co ltd
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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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133617—Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Planar Illumination Modules (AREA)

Abstract

An embodiment of the present disclosure provides a liquid crystal display panel and a liquid crystal display device, the liquid crystal display panel including: a light source adapted to emit at least ultraviolet light; the liquid crystal layer is arranged on one side of the light source; the filter layer is arranged on the other side, away from the light source, of the liquid crystal layer; the filter layer includes a plurality of filter units, the filter units include an ultraviolet filter block, and the ultraviolet filter block is adapted to transmit ultraviolet light. Therefore, the liquid crystal display panel provided by the invention can be used for effectively saving space, does not need to be additionally provided with ultraviolet sterilization equipment, and is more convenient.

Description

Liquid crystal display panel and liquid crystal display device
Technical Field
Embodiments of the present disclosure relate generally to the field of liquid crystal display devices, and more particularly, to a liquid crystal display panel and a liquid crystal display device.
Background
At home, microorganisms such as bacteria are easily grown due to the existence of human body, diet or flowers and plants.
Liquid crystal display devices such as televisions and computer display screens in households are usually located in an open space, but in order to protect human eyes, the conventional liquid crystal display devices usually remove parts with short wavelengths (including blue light, purple light and ultraviolet light) during display, so that the ultraviolet light cannot be transmitted, and the sterilization effect is not achieved.
If the liquid crystal display device such as a television, a computer display screen and the like is used for generating ultraviolet rays, the sterilization of a bedroom or a living room can be assisted.
Therefore, there is a need for a liquid crystal display panel and a liquid crystal display device suitable for killing microorganisms such as bacteria.
Disclosure of Invention
According to an embodiment of the present disclosure, there are provided a liquid crystal display panel and a liquid crystal display apparatus.
In a first aspect of the present disclosure, there is provided a liquid crystal display panel including:
a light source adapted to emit at least ultraviolet light;
the liquid crystal layer is arranged on one side of the light source;
the filter layer is arranged on the other side, away from the light source, of the liquid crystal layer; the filter layer includes a plurality of filter units, the filter units include an ultraviolet filter block, and the ultraviolet filter block is adapted to transmit ultraviolet light.
The aspects and any possible implementations described above further provide an implementation in which the light source is further adapted to emit red, green, and blue light;
the light filtering unit further comprises a red light filtering block, a green light filtering block and a blue light filtering block, wherein the red light filtering block is suitable for transmitting red light, the green light filtering block is suitable for transmitting green light, the blue light filtering block is suitable for transmitting blue light, the light filtering unit is arranged in a matrix form, and the ultraviolet light filtering block, the red light filtering block, the green light filtering block and the blue light filtering block are arranged in a matrix form in the light filtering unit.
The above aspects and any possible implementations further provide an implementation in which the light source comprises a light emitting diode white light source adapted to emit at least ultraviolet light having a wavelength of 380nm to 400 nm.
The above aspects and any possible implementations further provide an implementation in which the light source comprises an ultraviolet light emitting diode light source adapted to emit ultraviolet light at least at a wavelength of 255nm to 340 nm.
As to the above-described aspect and any possible implementation, there is further provided an implementation, further including:
and the controller is suitable for controlling the working states of the light source and the liquid crystal layer.
The above-mentioned aspects and any possible implementation manner further provide an implementation manner, where the controller is further adapted to control the operating states of the light source and the liquid crystal layer through an ultraviolet light emission control instruction, where the ultraviolet light emission control instruction includes one or more of a light emission time period, or a light emission intensity of the light source.
The above-described aspects and any possible implementation further provide an implementation, further including:
the controller is also suitable for controlling the light source to be in an opening state, and controlling the liquid crystal layer corresponding to the ultraviolet filtering block to be in an ultraviolet transmission state, and displaying corresponding information on the liquid crystal display panel.
The above-described aspects and any possible implementation further provide an implementation, further including:
the human body detection sensor is suitable for detecting whether human body movement exists in front of the liquid crystal display panel to obtain a corresponding human body detection signal;
the controller is suitable for controlling the light source to be in an open state and controlling the liquid crystal layer corresponding to the ultraviolet filtering block to be in an ultraviolet transmission state when the human body detection signal indicates that no human body is in front of the liquid crystal display panel.
In the aspect and any possible implementation manner described above, an implementation manner is further provided, where the light source includes an ultraviolet light emitting diode light source, and the controller is further adapted to control the ultraviolet light emitting diode light source to be in an on state and control the liquid crystal layer corresponding to the ultraviolet filter block to be in an ultraviolet transmission state according to the human detection signal when no human body is in front of the liquid crystal display panel.
In a second aspect of the present disclosure, there is provided a liquid crystal display apparatus including the liquid crystal display panel and an ultraviolet light emitting device adapted to emit ultraviolet light.
Compared with the prior art, the invention has the beneficial effects that:
the present invention provides a liquid crystal display panel, comprising:
a light source adapted to emit at least ultraviolet light;
the liquid crystal layer is arranged on one side of the light source;
the filter layer is arranged on the other side, away from the light source, of the liquid crystal layer; the filter layer includes a plurality of filter units, the filter units include an ultraviolet filter block, and the ultraviolet filter block is adapted to transmit ultraviolet light.
It can be seen that, in the liquid crystal display panel provided by the invention, because the light source can emit ultraviolet light, the ultraviolet filter block in the filter layer can be required to transmit and block ultraviolet light, when a sterilization requirement exists, the power supply can be turned on according to the requirement, and the ultraviolet filter block can transmit ultraviolet light, so as to emit ultraviolet light, thereby achieving the purpose of sterilization by using liquid crystal display equipment such as televisions, computer display screens and the like.
It should be understood that the statements herein reciting aspects are not intended to limit the critical or essential features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.
Drawings
The above and other features, advantages and aspects of various embodiments of the present disclosure will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, like or similar reference characters designate like or similar elements, and wherein:
fig. 1 is a schematic longitudinal sectional view of a liquid crystal display panel provided by an embodiment of the present disclosure;
fig. 2 shows a schematic cross-sectional view of a filter layer of a liquid crystal display panel provided in an embodiment of the present disclosure.
Legend: 11. a light source; 12. a liquid crystal layer; 121. a liquid crystal; 122. a liquid crystal baffle; (ii) a 13. A filter layer; 131. a light filtering unit; 1311. an ultraviolet filter block; 1312. a red filter block; 1313. a green filter block; 1314. a blue filter block; 132. a black shading block; 141. a lower polarizing plate; 142. an upper polarizer.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The disclosure provides a liquid crystal display panel, which comprises a light source, a liquid crystal layer and a filter layer, wherein the light source can emit ultraviolet light, the ultraviolet filter block in the filter layer can transmit and block the ultraviolet light, and when sterilization is required, a power supply can be switched on as required, and the ultraviolet filter block can transmit the ultraviolet light so as to emit the ultraviolet light, so that the purpose of sterilization by using liquid crystal display equipment such as a television, a computer display screen and the like can be achieved.
Specifically, referring to fig. 1, fig. 1 is a schematic longitudinal sectional view of a liquid crystal display panel provided in an embodiment of the disclosure.
The present invention provides a liquid crystal display panel, comprising:
a light source 11, said light source 11 being adapted to emit at least ultraviolet light;
and the liquid crystal layer 12 is arranged on one side of the light source 11, and the liquid crystal layer 12 may include a liquid crystal body 121, liquid crystal baffles 122 clamped on two sides of the liquid crystal body, and pixel electrodes 123 controlling the operation of the liquid crystal body 121.
A filter layer 13, wherein the filter layer 13 is disposed on the other side of the liquid crystal layer 12 away from the light source 11; the filter layer 13 includes a plurality of filter units 131, the filter units 131 include an ultraviolet filter block 1311, the ultraviolet filter block 1311 is suitable for transmitting ultraviolet light, the ultraviolet filter block 1311 may be formed by processing the filter layer 13 by using an existing processing technology of an ultraviolet filter, and a specific filter band may be selected according to an emission band and a use requirement of the light source 11.
In order to achieve a normal display function, the light source 11 is further adapted to emit red, green and blue light; the filter unit 131 further includes a red filter block 1312, a green filter block 1313, and a blue filter block 1314, the red filter block 1312 being adapted to transmit red light, the green filter block 1313 being adapted to transmit green light, and the blue filter block 1314 being adapted to transmit blue light.
Wherein the kind of the light source 11 can be selected according to the requirement, in a specific embodiment, the light source 11 can include a light emitting diode white light source (LED white light source) adapted to emit at least ultraviolet light with a wavelength of 380nm-400 nm.
In the wave spectrum of the existing white light source of the light emitting diode, the ultraviolet light with the wavelength of 380nm-400nm occupies lower partial radiation energy, can be suitable for the condition that the required ultraviolet light energy is lower, does not need to replace the light source, directly adopts the existing light source, and is simpler and more convenient.
When the light source 11 includes a white light source of an led, the uv filter 1311 may also transmit white light emitted from the white light source of the led, and may serve as a white pixel to improve brightness.
In another embodiment, the light source 11 may also include an ultraviolet light emitting diode light source (UV LED light source).
The ultraviolet light-emitting diode light source can emit a large amount of ultraviolet light with the wavelength of below 400nm, and compared with the light-emitting diode white light source, the ultraviolet light-emitting diode light source can be suitable for the condition that the required ultraviolet light energy is higher due to the fact that the radiation energy of the ultraviolet light is higher, and the sterilization effect is improved.
In order to meet the display requirement, the ultraviolet light-emitting diode light source and the light-emitting diode white light source can be used simultaneously, can be formed on the same backlight back plate, or can be formed on two different backlight back plates, and then the ultraviolet light-emitting diode light source and the light-emitting diode white light source are overlapped for use after holes are formed in one of the backlight back plates.
When the light source 11 includes an ultraviolet light emitting diode light source, the wavelength band of the emitted ultraviolet light may be selected as desired. In one embodiment, the UV LED light source is adapted to emit at least UV light having a wavelength of 255nm to 340 nm. By selecting the light source 11 capable of emitting ultraviolet light with the wavelength of 255nm-340nm, the light quantum energy of the ultraviolet light emitted by the liquid crystal display panel is high, and the sterilization effect is good.
It is understood that the light source may only include a back light plate, or may include a light source disposed perpendicular to the liquid crystal layer and a reflective plate disposed obliquely, and the light source only needs to allow light to enter the liquid crystal layer perpendicularly.
The arrangement of the filter blocks in the filter unit 131 can be selected according to the requirement. In order to ensure that the filter blocks in the filter units 131 can be uniformly distributed, in a specific embodiment, please refer to fig. 2, fig. 2 shows a schematic cross-sectional view of a filter layer of a liquid crystal display panel provided in an embodiment of the present disclosure, a plurality of filter units 131 are arranged in a matrix, and the ultraviolet filter block 1311, the red filter block 1312, the green filter block 1313, and the blue filter block 1314 in the filter units 131 are arranged in a matrix. The plurality of filter units 131 are arranged in a matrix form, and the ultraviolet filter block 1311, the red filter block 1312, the green filter block 1313 and the blue filter block 1314 in the filter units 131 are arranged in a matrix form, so that the filter units 131 and the filter blocks can be uniformly distributed, and the display effect is improved.
The sizes of the uv filter block 1311, the red filter block 1312, the green filter block 1313, and the blue filter block 1314 may be the same or different, and in order to reduce the speed of increasing the decay of the uv filter block 1311, the blue filter block, and the liquid crystal layer 12 corresponding thereto, and to extend the lifetime of the uv filter block 1311, the blue filter block, and the liquid crystal layer 12 corresponding thereto, the areas of the uv filter block 1311, the blue filter block, and the liquid crystal layer 12 corresponding thereto may be increased, so that after some materials in the uv filter block 1311, the blue filter block, and the liquid crystal layer 12 corresponding thereto decay, normal operation may still be maintained.
In order to isolate the respective filter blocks and prevent the respective colors from being mixed during display, the filter layer may further include Black Matrix (BM) blocks, which may be used to separate the respective filter blocks to improve color contrast.
The liquid crystal display panel may further include a substrate and a polarizing plate; the substrate can control the liquid crystal layer 12, and further control whether light is transmitted or blocked in the liquid crystal layer 12, and the type of the substrate can be a Thin Film Transistor (TFT) substrate; the polarizer may include an upper polarizer and a lower polarizer, the lower polarizer 141 is configured to convert light generated by the light source 11 into polarized light, and the upper polarizer 142 is configured to analyze the polarized light processed by the liquid crystal layer 12 to generate contrast, so as to generate a display image; wherein, according to the needs, the corresponding structures such as protective film can be added.
When the liquid crystal display panel is configured as described above, the optical path may be, in order, the light source 11 → the lower polarizing plate 141 → the liquid crystal layer 12 → the filter layer 13 → the upper polarizing plate 142 → the outside.
It can be seen that, in the liquid crystal display panel provided by the present invention, since the light source 11 can emit ultraviolet light, the ultraviolet filter block 1311 in the filter layer 13 can transmit and block ultraviolet light as required, when there is a sterilization requirement, the power supply can be turned on as required and the ultraviolet filter block 1311 can transmit ultraviolet light, thereby emitting ultraviolet light, and thus achieving the purpose of sterilization by using liquid crystal display devices such as televisions and computer display screens.
Since the liquid crystal layer 12 in the liquid crystal display panel is susceptible to aging under long-term ultraviolet irradiation, in order to reduce the aging of the liquid crystal layer 12, in a specific embodiment, the liquid crystal display panel further comprises:
and the controller is suitable for controlling the working state of the light source 11 and controlling the liquid crystal layer 12 corresponding to the ultraviolet filter block to be in an ultraviolet transmission state.
For example, the controller may be utilized to control the light emitting duration of the light source 11 through an ultraviolet light emitting control instruction, and light is emitted for multiple times by using a smaller time length or a smaller light emitting intensity, so as to reduce the influence on the liquid crystal layer 12, or the time for turning on the ultraviolet light is customized, so as to reduce the influence on the liquid crystal layer 12 and reduce the influence on the human body.
When the light source 11 includes an ultraviolet light emitting diode light source, the controller may only control the operating state of the liquid crystal layer 12 corresponding to the ultraviolet light emitting diode light source and the ultraviolet filter block as required, so as to reduce the aging effect on the liquid crystal layer 12 while satisfying the sterilization requirement.
In order to reduce the influence of ultraviolet rays on a human body, the controller is further suitable for controlling the light source 11 to be in an open state, and controlling the liquid crystal layer 12 corresponding to the ultraviolet filtering blocks to be in an ultraviolet ray transmission state, namely controlling the liquid crystal layer corresponding to other filtering blocks such as red, green and blue to be in a transmission state when disinfection work is carried out, so as to display corresponding information.
When the light source 11 includes a white light source of an led, the uv filter 1311 may also transmit white light emitted from the white light source of the led, and may be used as a white pixel to participate in display.
Since the excessively strong ultraviolet rays are likely to affect the human body, in order to reduce the effect of the ultraviolet rays on the human body, in one embodiment, the liquid crystal display panel may further include:
the human body detection sensor is suitable for detecting whether human body movement exists in front of the liquid crystal display panel to obtain a corresponding human body detection signal;
the controller is suitable for controlling the light source 11 to be in an open state and controlling the liquid crystal layer 12 corresponding to the ultraviolet filter block to be in an ultraviolet transmission state according to the human body detection signal when the human body detection signal indicates that no human body moves in front of the liquid crystal display panel.
Wherein, human body detection sensor can select infrared human body detection sensor for use, infrared human body detection sensor detects the existence of people through measuring the energy of infrared ray.
The human body detection sensor can send the obtained human body detection signal to the controller, and the controller can receive the human body detection signal to control the light source 11.
The front of the liquid crystal display panel is the direction of receiving light, i.e. the direction of a person viewing the display device.
When the human body detection signal is that no human body moves in front of the liquid crystal display panel, the controller can open the light source 11 to make the liquid crystal layer 12 corresponding to the ultraviolet filter block be in an ultraviolet transmission state, so that the liquid crystal display panel emits ultraviolet light to perform sterilization.
When the human body detection signal indicates that a human body moves in front of the liquid crystal display panel, the controller can turn off the light source 11, so that the liquid crystal display panel does not emit ultraviolet light any more, and the human body is prevented from being influenced.
When the light source 11 includes an ultraviolet light emitting diode light source, the controller may control the operating states of the ultraviolet light emitting diode light source and the liquid crystal layer 12 corresponding to the ultraviolet filter block as needed.
When the human body detection signal indicates that no human body is in front of the liquid crystal display panel, the controller can turn on the ultraviolet light emitting diode light source to enable the liquid crystal layer 12 corresponding to the ultraviolet filter block to be in an ultraviolet transmission state, so that the liquid crystal display panel emits ultraviolet light to perform sterilization.
When the human body detection signal indicates that a human body moves in front of the liquid crystal display panel, the controller can turn off the ultraviolet light emitting diode light source, so that the liquid crystal display panel does not emit ultraviolet light any more, and the influence on the human body is avoided.
It can be seen that if general sterilization is desired, ultraviolet light may be emitted through the liquid crystal display panel for sterilization. Further, in order to meet the high sterilization requirement, in a specific embodiment, the embodiment of the present disclosure further provides a liquid crystal display device including the liquid crystal display panel and an ultraviolet light emitting device adapted to emit ultraviolet light.
By additionally arranging the ultraviolet light-emitting device, the liquid crystal display equipment can better meet the sterilization requirement.
Because the intensity of ultraviolet light of ultraviolet illuminator is higher, consequently, in order to reduce the influence that the ultraviolet ray produced to the human body, be convenient for control ultraviolet illuminator, in a specific embodiment, the controller is suitable for according to human detection signal, when human detection signal is when no human activity in the place ahead of liquid crystal display panel, the controller is suitable for according to human detection signal, control light source 11 with ultraviolet illuminator is the on-state, control that ultraviolet filter block corresponds liquid crystal layer 12 is the ultraviolet ray transmission state.
When the human body detection signal indicates that no human body is in front of the liquid crystal display panel, the controller may turn on the light source 11 and the ultraviolet light emitting device together, and cause the liquid crystal layer 12 corresponding to the ultraviolet filter block to be in an ultraviolet transmission state, so that the liquid crystal display panel and the ultraviolet light emitting device emit ultraviolet light together to perform sterilization.
When the human body detection signal indicates that a human body moves in front of the liquid crystal display panel, the controller can close the light source 11 and the ultraviolet light-emitting device together, so that the liquid crystal display panel and the ultraviolet light-emitting device do not emit ultraviolet light any more, and the influence on the human body is avoided.
It can be seen that the controller can control the light source 11 and the ultraviolet light emitting device together, so that the controller can keep the working states of the light source 11 and the ultraviolet light emitting device uniform, and does not need to add other devices for controlling the ultraviolet light emitting device, which is relatively simple.
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims (7)

1. A liquid crystal display panel, comprising:
a light source adapted to emit at least ultraviolet light;
the liquid crystal layer is arranged on one side of the light source;
the filter layer is arranged on the other side, away from the light source, of the liquid crystal layer; the filter layer comprises a plurality of filter units, each filter unit comprises a red filter block, a green filter block, a blue filter block and an ultraviolet filter block, the red filter block is suitable for transmitting red light, the green filter block is suitable for transmitting green light, the blue filter block is suitable for transmitting blue light, the ultraviolet filter block is suitable for transmitting ultraviolet light, the filter units are arranged in a matrix form, and the ultraviolet filter block, the red filter block, the green filter block and the blue filter block in each filter unit are arranged in the matrix form; the light source comprises a light emitting diode white light source adapted to emit at least ultraviolet light having a wavelength of 380nm to 400 nm.
2. The liquid crystal display panel of claim 1, wherein the light source comprises an ultraviolet light emitting diode light source adapted to emit at least ultraviolet light having a wavelength of 255nm to 340 nm.
3. The liquid crystal display panel according to claim 2, further comprising:
and the controller is suitable for controlling the working states of the light source and the liquid crystal layer.
4. The liquid crystal display panel of claim 3, wherein the controller is further adapted to control the operating states of the light source and the liquid crystal layer via an ultraviolet light emission control command, wherein the ultraviolet light emission control command includes one or more of a light emission duration, a light emission time, or a light emission intensity of the light source.
5. The liquid crystal display panel according to claim 3, further comprising:
the controller is also suitable for controlling the light source to be in an open state, and controlling the liquid crystal layer corresponding to the ultraviolet filtering blocks to be in an ultraviolet transmission state, and controlling the liquid crystal layer corresponding to other filtering blocks to be in a transmission state so as to display corresponding information.
6. The LCD panel of claim 3, wherein the controller is further adapted to control the UV LED light source to be in an ON state and the liquid crystal layer corresponding to the UV filter block to be in a UV transmissive state when the human detection signal indicates that no human body is in front of the LCD panel; when the human body detection signal indicates that human body movement exists in front of the liquid crystal display panel, the ultraviolet light emitting diode light source is controlled to be in an open state, and the liquid crystal layer corresponding to the ultraviolet light filtering block is controlled to be in an ultraviolet non-transmission state.
7. A liquid crystal display device comprising the liquid crystal display panel according to any one of claims 1 to 6 and an ultraviolet light emitting device adapted to emit ultraviolet light.
CN202110548181.1A 2021-05-19 2021-05-19 Liquid crystal display panel and liquid crystal display device Active CN113219717B (en)

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