CN105632423B - A kind of backlight module and its driving method, display device - Google Patents
A kind of backlight module and its driving method, display device Download PDFInfo
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- CN105632423B CN105632423B CN201610197305.5A CN201610197305A CN105632423B CN 105632423 B CN105632423 B CN 105632423B CN 201610197305 A CN201610197305 A CN 201610197305A CN 105632423 B CN105632423 B CN 105632423B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
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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
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- 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
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention provides a kind of backlight module and its driving method, display device, wherein, the backlight module includes：Illuminant module, for comparing environmental light intensity and an Intensity threshold, and according to comparative result, generate the photoreceptor signal for making backlight send visible or infrared light；Backlight control module, it is connected with the illuminant module, for according to the photoreceptor signal, controlling the backlight to send visible or infrared light.The solution of the present invention, whole backlight module is enabled to the provided backlight of adjustment, to ensure the safety that display is applied, such as the safety display under military dark situation according to environmental light intensity.
Description
Technical field
The present invention relates to field of liquid crystal display, more particularly to a kind of backlight module and its driving method, display device.
Background technology
Backlight module is one of key component of liquid crystal display, and brightness and light source are provided for liquid crystal display panel, so as to
Make display panel display picture.Therefore, the light source that backlight module provides, largely determines the display of liquid crystal display
Effect.
Wherein, existing backlight module uses greatly both for conventional application environment, will not be because of the environmental light intensity in the external world
The there is provided backlight of adjustment so that in application circumstances such as military environments, the environmental light intensity as residing for liquid crystal display
It is poor, display location is easily exposed, display application safety can not be ensured.
The content of the invention
It is an object of the invention to provide a kind of backlight module and its driving method, display device, to solve the existing back of the body
Optical mode group can not be according to environmental light intensity, the problem of adjusting provided backlight.
In order to realize above-mentioned purpose, the embodiment of the present invention provides a kind of backlight module, including：
Illuminant module, for comparing environmental light intensity and an Intensity threshold, and according to comparative result, generate for making backlight
Send the photoreceptor signal of visible or infrared light；
Backlight control module, it is connected with the illuminant module, for according to the photoreceptor signal, controlling the backlight to send out
Go out visible or infrared light.
Preferably, the illuminant module is specifically used for：When the comparative result is that the environmental light intensity is more than the light intensity
During threshold value, the first photoreceptor signal for making the backlight send visible ray is generated；Or when the comparative result is described
When environmental light intensity is less than or equal to the Intensity threshold, the second photoreceptor signal for making the backlight send infrared light is generated.
Preferably, the backlight control module includes：
Judging unit, for judging that the photoreceptor signal is first photoreceptor signal or second photoreceptor signal,
Obtain a judged result；
First backlight driver unit, for being that the photoreceptor signal is first photoreceptor signal when the judged result
When, control the backlight to send visible ray；
Second backlight driver unit, for being that the photoreceptor signal is second photoreceptor signal when the judged result
When, control the backlight to send infrared light.
Preferably, the backlight includes the visible LED light source of multiple whites and multiple infrared LED light sources.
Preferably, the visible LED light source of the white and the infrared LED light source alternate setting.
Preferably, the backlight control module is additionally operable to the view data that the image processing module of receiving and displaying device is sent
Signal, according to the photoreceptor signal and viewdata signal, the visible LED light source of the partial white in the backlight is controlled to send
Part infrared LED light source in visible ray or the control backlight sends infrared light, wherein, described image data-signal is institute
State after image processing module is handled display image and obtain, the visible LED light source of the partial white or part infrared LED light
Source is corresponding with the display image.
The embodiment of the present invention also provides a kind of display device, including above-mentioned backlight module.
Preferably, the display device also includes：
Color membrane substrates, the color membrane substrates include electrochromic layer EC；
Color film drive module, for exporting EC driving voltages to the EC, it is set to switch between single-color layer and hyaline layer,
The single-color layer is red color layer, green layer or cyan coloring layer.
In order to realize above-mentioned purpose, also a kind of driving method of backlight module of the embodiment of the present invention, the backlight module
For above-mentioned backlight module, wherein, the driving method includes：
Compare environmental light intensity and an Intensity threshold, and according to comparative result, generate for make backlight send visible ray or
The photoreceptor signal of infrared light；
According to the photoreceptor signal, the backlight is controlled to send visible or infrared light.
Preferably, it is described according to comparative result, generate the photoreceptor signal for making backlight send visible or infrared light
The step of include：
When the comparative result is that the environmental light intensity is more than the Intensity threshold, generate for sending out the backlight
Go out the first photoreceptor signal of visible ray；Or when the comparative result is that the environmental light intensity is less than or equal to the Intensity threshold
When, generate the second photoreceptor signal for making the backlight send infrared light.
Preferably, described according to the photoreceptor signal, the step of control backlight sends visible or infrared light, includes：
It is first photoreceptor signal or second photoreceptor signal to judge the photoreceptor signal, obtains a judgement knot
Fruit；
When it is first photoreceptor signal that the judged result, which is the photoreceptor signal, controlling the backlight to send can
See light；Or when it is second photoreceptor signal that the judged result, which is the photoreceptor signal, the backlight is controlled to send
Infrared light.
Preferably, described according to the photoreceptor signal, the step of controlling the backlight to send visible or infrared light, wraps
Include：
According to the photoreceptor signal and viewdata signal, the visible LED light source of partial white in the backlight is controlled
The part infrared LED light source sent in visible ray or the control backlight sends infrared light, wherein, described image data-signal
It is to be obtained after the image processing module of display device is handled display image, the visible LED light source of the partial white or portion
Outer LED light source of sharing out bonus is corresponding with the display image.
By the present invention above-mentioned technical proposal, the beneficial effects of the present invention are：
The backlight module of the embodiment of the present invention, by illuminant module and backlight control module, compare environmental light intensity and a light
Strong threshold value, and according to comparative result, the photoreceptor signal for making backlight send visible or infrared light is generated, and according to described
Photoreceptor signal, the backlight is controlled to send visible or infrared light so that whole backlight module can be adjusted according to environmental light intensity
Whole provided backlight, ensure the safety of display application, such as the safety display under military dark situation.
Brief description of the drawings
Fig. 1 represents a kind of structural representation of backlight module provided in an embodiment of the present invention；
Fig. 2 represents the structural representation of another backlight module provided in an embodiment of the present invention；
Fig. 3 represents a kind of structural representation of backlight provided in an embodiment of the present invention；
Fig. 4 represents the structural representation of another backlight provided in an embodiment of the present invention；
Fig. 5 A represent the schematic diagram that the display image " ☆ " of the specific embodiment of the invention is shown on a display panel；
Fig. 5 B represent the schematic diagram that backlight is controlled according to display image " ☆ " of the specific embodiment of the invention；
Fig. 5 C represent another schematic diagram that backlight is controlled according to display image " ☆ " of the specific embodiment of the invention；
Fig. 6 represents the working timing figure of the display device of the embodiment of the present invention；
Fig. 7 represents a kind of flow chart of the driving method of backlight module provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is part of the embodiment of the present invention, rather than whole embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
Shown in Figure 1, the embodiment of the present invention provides a kind of backlight module, including：
Illuminant module 1, for comparing environmental light intensity and an Intensity threshold, and according to comparative result, generate for making backlight
Source sends the photoreceptor signal of visible or infrared light；
Backlight control module 2, it is connected with the illuminant module, for according to the photoreceptor signal, controlling the backlight
Send visible or infrared light.
So, by illuminant module and backlight control module, environmental light intensity and an Intensity threshold are compared, and tie according to comparing
Fruit, the photoreceptor signal for making backlight send visible or infrared light is generated, and according to the photoreceptor signal, control the back of the body
Light source sends visible or infrared light, so that whole backlight module can adjust provided backlight according to environmental light intensity,
Ensure the safety of display application, such as the safety display under military dark situation.
Specifically, in order to realize the division to environmental light intensity, the light intensity threshold can be pre-set in the illuminant module 1
Value, and by the comparison of environmental light intensity and Intensity threshold, to be sensed to environmental light intensity.
Wherein, the illuminant module 1 is specifically used for：When the comparative result is that the environmental light intensity is more than the light intensity threshold
During value, the first photoreceptor signal for making the backlight send visible ray is generated；Or when the comparative result is the ring
When border light intensity is less than or equal to the Intensity threshold, the second photoreceptor signal for making the backlight send infrared light is generated.
Further, shown in Figure 2, the backlight control module 2 includes：
Judging unit 21, for judging that the photoreceptor signal is first photoreceptor signal or the second photosensitive letter
Number, obtain a judged result；
First backlight driver unit 22, for being that the photoreceptor signal is the described first photosensitive letter when the judged result
Number when, control the backlight to send visible ray；
Second backlight driver unit 23, for being that the photoreceptor signal is the described second photosensitive letter when the judged result
Number when, control the backlight to send infrared light.
For example, default Intensity threshold is 10nits, photoreceptor signal Vlight, as shown in table 1 and Fig. 6：
| Environmental light intensity | Vlight | Backlight is shown |
| ﹥ 10nits | 1 | Visible ray |
| ≤10nits | ﹣ 1 | Infrared light |
Table 1
When environmental light intensity is more than 10nits, illuminant module generates the first photoreceptor signal Vlight=1, and the first backlight drives
Moving cell generates WLED driving datas, control backlight hair visible ray；
When environmental light intensity is less than or equal to 10nits, illuminant module generates the second photoreceptor signal Vlight=﹣ 1, and second back of the body
Light source driving units generate IRLED driving datas, control backlight hair infrared light.
In the embodiment of the present invention, the backlight is direct-light-type backlight or side-edge type backlight, and the present invention does not enter to it
Row limitation.Also, in order to send visible or infrared light, the backlight include the visible WLED light sources of multiple whites with it is more
Individual infrared IRLED light sources.Wherein, the WLED light sources (or RGBLED light sources) are, for example, by red LED light source, green LED light
Source and blue led light source composition.
Preferably, in the embodiment of the present invention, the WLED light sources and the IRLED light sources interval in the backlight are handed over
For setting.
For example, when backlight is direct-light-type backlight, shown in Figure 3, IRLED light sources and WLED the light sources interval
It is arranged alternately, specifically, described IRLED, RLED, GLED and BLED are arranged in rows successively.Wherein, LGP is light guide plate.
Or when backlight is side-edge type backlight, shown in Figure 4, IRLED light sources and WLED the light sources interval
It is arranged alternately, specifically, described IRLED, RLED, GLED and BLED are set gradually.Wherein, LGP is light guide plate.
In the embodiment of the present invention, the image processing module that the backlight control module 2 is additionally operable to receiving and displaying device is sent
Viewdata signal, according to the photoreceptor signal and viewdata signal, control the partial white in the backlight visible
The part infrared LED light source that LED light source is sent in visible ray or the control backlight sends infrared light, wherein, described image
Data-signal is obtained after described image processing module is handled display image, the visible LED light source of the partial white or
Part infrared LED light source is corresponding with the display image.
So, by photoreceptor signal and viewdata signal, backlight is controlled, can be strengthened to display device
The control of backlight.
For example, with reference to shown in Fig. 5 A, the display image on the display panel Panel of display device is " ☆ ".When display fills
The backlight put is side-edge type backlight, and when sending infrared light, the solution by backlight control module 2 to viewdata signal
Analysis, opened referring to shown in Fig. 5 B, can only control IRLED light sources corresponding with the viewing area of display image " ☆ ".Specifically, with
Two borders of display image are that foundation marks boundary line 1 ' and 2 ', and only open within boundary line 1 ' and 2 ' (including zone boundary)
IRLED light sources, i.e., the LED light source of the exterior domain of boundary line 1 ' and 2 ' be in close state (filled black represents LED and is in
Closed mode).Further, according to the actual requirements, the brightness of also controllable IRLED light sources, such as among control viewing area
Backlight IRLED light sources it is brighter, and control the brightness of the IRLED light sources of the backlight of viewing area boundary slightly smaller.
Or when the backlight of display device is direct-light-type backlight, and to send visible ray, pass through backlight control module 2
Parsing to viewdata signal, it is corresponding with the viewing area of display image " ☆ " referring to shown in Fig. 5 C, can only control
RGBLED light sources are opened.Specifically, using the border of display image as according to marking boundary line 3 ', 4 ', 5 ' and 6 ', and only open by
The RGBLED light sources of (including zone boundary) in the region that boundary line 3 ', 4 ', 5 ' and 6 ' surrounds, at the LED light source in other regions
In the state of closing (filled black represents LED and is closed).
The embodiment of the present invention also provides a kind of display device, and the display device includes above-mentioned backlight module.
Preferably, the display device of the embodiment of the present invention also includes color membrane substrates CF and color film drive module, wherein, it is described
Color membrane substrates include electrochromic layer EC, and the color film drive module is used to export EC driving voltages to the EC, makes it in list
Switch between chromatograph and hyaline layer, the single-color layer is red color layer, green layer or cyan coloring layer.
Specifically, the electrochromic layer EC is formed by the material with electrochromic property, alive work outside
Under, apparent color and transparency can all change.In the embodiment of the present invention, the electrochromic layer can in color
Show as red, green or blueness, due to the change of extraneous driving voltage, the electrochromic layer can behave as again it is transparent, this
Sample, by increasing capacitance it is possible to increase the light transmittance of light.
For example, shown in Figure 6, under conventional sense, the electrochromic layer is red color layer, green layer or blueness
Layer, backlight at this moment is white visible light；After plus EC driving voltages, the electrochromic layer is changed into hyaline layer, at this moment
Backlight is infrared light, by increasing capacitance it is possible to increase the light transmittance of infrared light.
It should be noted that the EC can also be hyaline layer under conventional sense, backlight at this moment is infrared light；And
After EC driving voltages, the electrochromic layer is changed into red color layer, green layer or cyan coloring layer, and backlight at this moment is visible for white
Light, the present invention are not limited.
Shown in Figure 7, the embodiment of the present invention also provides a kind of driving method of backlight module, and the backlight module is figure
Backlight module shown in 1.Wherein, the driving method includes：
Step 701：Compare environmental light intensity and an Intensity threshold, and according to comparative result, generate for sending backlight
The photoreceptor signal of visible or infrared light；
Step 702：According to the photoreceptor signal, the backlight is controlled to send visible or infrared light.
Specifically, in the embodiment of the present invention, it is described according to comparative result, generate for making backlight send visible ray or red
The step of photoreceptor signal of outer light, includes：
When the comparative result is that the environmental light intensity is more than the Intensity threshold, generate for sending out the backlight
Go out the first photoreceptor signal of visible ray；Or when the comparative result is that the environmental light intensity is less than or equal to the Intensity threshold
When, generate the second photoreceptor signal for making the backlight send infrared light.
Further, the step 702 includes：
It is first photoreceptor signal or second photoreceptor signal to judge the photoreceptor signal, obtains a judgement knot
Fruit；
When it is first photoreceptor signal that the judged result, which is the photoreceptor signal, controlling the backlight to send can
See light；Or when it is second photoreceptor signal that the judged result, which is the photoreceptor signal, the backlight is controlled to send
Infrared light.
In the specific embodiment of the invention, the step 702 includes：
According to the photoreceptor signal and viewdata signal, the visible LED light source of partial white in the backlight is controlled
The part infrared LED light source sent in visible ray or the control backlight sends infrared light, wherein, described image data-signal
It is to be obtained after the image processing module of display device is handled display image, the visible LED light source of the partial white or portion
Outer LED light source of sharing out bonus is corresponding with the display image.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (8)
- A kind of 1. backlight module, it is characterised in that including：Illuminant module, for comparing environmental light intensity and an Intensity threshold, and according to comparative result, generate for sending backlight The photoreceptor signal of visible or infrared light；Backlight control module, it is connected with the illuminant module, for according to the photoreceptor signal, controlling the backlight to send can See light or infrared light；Wherein, the illuminant module is specifically used for：When the comparative result is that the environmental light intensity is more than the Intensity threshold, Generate the first photoreceptor signal for making the backlight send visible ray；Or when the comparative result is the ambient light When being less than or equal to the Intensity threshold by force, the second photoreceptor signal for making the backlight send infrared light is generated；The backlight control module includes：Judging unit, for judging that the photoreceptor signal is first photoreceptor signal or second photoreceptor signal, obtain One judged result；First backlight driver unit, for when the judged result be the photoreceptor signal be first photoreceptor signal when, The backlight is controlled to send visible ray；Second backlight driver unit, for when the judged result be the photoreceptor signal be second photoreceptor signal when, The backlight is controlled to send infrared light.
- 2. backlight module according to claim 1, it is characterised in that the backlight includes the visible LED light of multiple whites Source and multiple infrared LED light sources.
- 3. backlight module according to claim 2, it is characterised in that the visible LED light source of white and the infrared LED Light source alternates setting.
- 4. backlight module according to claim 2, it is characterised in that the backlight control module is additionally operable to receive display dress The viewdata signal that the image processing module put is sent, according to the photoreceptor signal and viewdata signal, controls the back of the body The part infrared LED light source that the visible LED light source of partial white in light source is sent in visible ray or the control backlight is sent Infrared light, wherein, described image data-signal is obtained after described image processing module is handled display image, the portion Divide the visible LED light source of white or part infrared LED light source corresponding with the display image.
- 5. a kind of display device, it is characterised in that including any described backlight module in the claims 1-4.
- 6. display device according to claim 5, it is characterised in that the display device also includes：Color membrane substrates, the color membrane substrates include electrochromic layer EC；Color film drive module, for exporting EC driving voltages to the EC, it is set to switch between single-color layer and hyaline layer, it is described Single-color layer is red color layer, green layer or cyan coloring layer.
- A kind of 7. driving method of backlight module, it is characterised in that including：Compare environmental light intensity and an Intensity threshold, and according to comparative result, generate for making backlight send visible ray or infrared The photoreceptor signal of light；According to the photoreceptor signal, the backlight is controlled to send visible or infrared light；Wherein, it is described according to comparative result, the step of generation for making backlight send the photoreceptor signal of visible or infrared light Including：When the comparative result is that the environmental light intensity is more than the Intensity threshold, generating can for sending the backlight See the first photoreceptor signal of light；Or when the comparative result is that the environmental light intensity is less than or equal to the Intensity threshold, it is raw Into for making the backlight send the second photoreceptor signal of infrared light；It is described according to the photoreceptor signal, the step of controlling the backlight to send visible or infrared light, includes：It is first photoreceptor signal or second photoreceptor signal to judge the photoreceptor signal, obtains a judged result；When it is first photoreceptor signal that the judged result, which is the photoreceptor signal, the backlight is controlled to send visible Light；Or when it is second photoreceptor signal that the judged result, which is the photoreceptor signal, the backlight is controlled to send red Outer light.
- 8. the driving method of backlight module according to claim 7, it is characterised in that it is described according to the photoreceptor signal, The step of controlling the backlight to send visible or infrared light includes：According to the photoreceptor signal and viewdata signal, the visible LED light source of the partial white in the backlight is controlled to send Part infrared LED light source in visible ray or the control backlight sends infrared light, wherein, described image data-signal is aobvious The image processing module of showing device obtains after handling display image, and the visible LED light source of the partial white or part are red Outer LED light source is corresponding with the display image.
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| CN106782417B (en) * | 2017-03-03 | 2019-04-16 | 京东方科技集团股份有限公司 | Display panel, display system, display device and its driving method |
| CN107219676A (en) | 2017-08-03 | 2017-09-29 | 京东方科技集团股份有限公司 | Color membrane substrates, display panel, backlight module, display device and display system |
| CN110910823B (en) * | 2019-11-29 | 2021-04-30 | 上海天马微电子有限公司 | Display device |
| CN110853574A (en) * | 2019-12-12 | 2020-02-28 | 广州视源电子科技股份有限公司 | LED display circuit and display screen |
| CN113848663B (en) * | 2020-06-10 | 2024-05-10 | 三赢科技（深圳）有限公司 | Lens module testing device |
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