CN109407408A - A kind of backlight module and its control method, control device, display device - Google Patents
A kind of backlight module and its control method, control device, display device Download PDFInfo
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- CN109407408A CN109407408A CN201910015107.6A CN201910015107A CN109407408A CN 109407408 A CN109407408 A CN 109407408A CN 201910015107 A CN201910015107 A CN 201910015107A CN 109407408 A CN109407408 A CN 109407408A
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- lamp bar
- luminescence component
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- backlight module
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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
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- 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
-
- 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
- G09G3/3413—Details of control of colour illumination sources
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The embodiment of the present invention provides a kind of backlight module and its control method, control device, display device, wherein backlight module, comprising: substrate；Luminescence component in the substrate is provided at least one independent luminescence unit on the luminescence component；Drive module, for driving the luminescence component mobile；Control module, for controlling the brightness of the luminescence unit, to adjust the bright dark degree of the luminescence component.In this way, drive module driving luminescence component is mobile, control module controls the brightness of luminescence unit, makes luminescence unit that can show the certain luminance to match with the picture of display panel corresponding position in specific position, to promote the contrast of display panel.Multiplexing when luminescence unit may be implemented in different time points by shift position, so as to reduce the quantity of luminescence unit, the final cost and power consumption for reducing product.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of backlight module and its control method, control device, displays
Device.
Background technique
High dynamic range images (High-Dynamic Range, abbreviation HDR) technology is the one of current liquid crystal display panel
A important development is main to being controlled by the dynamic brightness of backlight, can effectively promote the contrast of display panel, promote picture
Face effect.
Current HDR technology uses the backlight of straight-down negative more, and the light-emitting diodes of a large amount of dot matrixs are arranged in the backlight
It manages (Light Emitting Diode, abbreviation LED), when picture shows corresponding brightness, Synchronous lifting or reduces corresponding LED's
Brightness, to improve the actual contrast of product, but a large amount of dot matrix backlights will cause the rising of cost and power consumption.
Summary of the invention
The purpose of the present invention is to provide a kind of backlight module and its control method, control device, display devices, to solve
A large amount of dot matrix backlights in the prior art cause the problem that product cost is high, power consumption is big.
In order to achieve the above object, the present invention provides a kind of backlight module, comprising:
Substrate；
Luminescence component in the substrate is provided at least one independent luminescence unit on the luminescence component；
Drive module, for driving the luminescence component mobile；
Control module, for controlling the brightness of the luminescence unit, to adjust the bright dark degree of the luminescence component.
Further, the luminescence component includes multiple lamp bars, at least one light emitting diode is provided in each lamp bar
LED；
The drive module is for driving the lamp bar to rotate；
The control module is used to control the brightness of the LED.
Further, the multiple lamp bar includes the first lamp bar, and the central point of first lamp bar is on the substrate
Orthographic projection is overlapped with the central point of the substrate, and the length of first lamp bar is less than the width of the substrate, the driving mould
Block drives first lamp bar to rotate around the central point of first lamp bar.
Further, the multiple lamp bar further includes that four the second lamp bars of the substrate corner location are arranged in；
It partly overlaps between the region that first lamp bar and each spinning a cycle of second lamp bar are covered；
It is not overlapped between the region that each second lamp bar rotation a cycle is covered.
Further, straight-down negative LED is not provided with by the region that lamp bar covers in the substrate, wherein described not by lamp
The region of item covering is region and second lamp bar rotation one that first lamp bar rotates a cycle covering in substrate
Region except the region of a periodic cover.
The present invention also provides a kind of control methods of backlight module, applied to above-mentioned backlight module, which comprises
The picture signal of the backlight module is obtained, the picture signal includes the mobile target position of luminescence component；
Control drive module drives the luminescence component to be moved to the target position；
Control the bright dark degree of the luminescence component.
Further, the luminescence component includes multiple lamp bars, and the lamp bar includes Light-emitting diode LED；
The step of bright dark degree of the control luminescence component, comprising:
According to speed and angle that the picture signal, the drive module drive the luminescence component mobile, institute is obtained
State the timing control signal of LED；
According to the timing control signal, Xiang Suoshu LED applies electric current, to control the brightness of the LED.
Further, the step of control drive module drives the luminescence component to be moved to the target position, packet
It includes:
Control the first lamp bar and the second lamp bar angular velocity of rotation having the same that multiple lamp bars include, and first lamp
The direction of rotation of item and second lamp bar is on the contrary, so that the luminescence component is moved to the target position.
The present invention also provides a kind of control device of backlight module, above-mentioned backlight module, described device includes:
Module is obtained, for obtaining the picture signal of the backlight module, the picture signal includes that luminescence component is mobile
Target position；
First control module drives the luminescence component to be moved to the target position for controlling drive module；
Second control module, for controlling the bright dark degree of the luminescence component.
The present invention also provides a kind of display devices, which is characterized in that including above-mentioned backlight module and above-mentioned backlight mould
The control device of group.
In the embodiment of the present invention, backlight module includes substrate；At least one luminescence component in the substrate, it is described
At least one independent luminescence unit is provided on luminescence component；Drive module, for driving the luminescence component mobile；Control
Module, for controlling the brightness of the luminescence unit, to adjust the bright dark degree of the luminescence component.In this way, drive module
Drive luminescence component mobile, control module controls the brightness of luminescence unit, makes luminescence unit that can show and show in specific position
The certain luminance that the picture of panel corresponding position matches, to promote the contrast of display panel.Luminescence unit passes through movement
Multiplexing when position may be implemented in different time points, so as to reduce the quantity of luminescence unit, it is final reduce product at
Sheet and power consumption.
Detailed description of the invention
Fig. 1 is a kind of structure chart of backlight module provided in an embodiment of the present invention；
Fig. 2 is another structure chart of backlight module provided in an embodiment of the present invention；
Fig. 3 is another structure chart of backlight module provided in an embodiment of the present invention；
Fig. 4 is a kind of structure chart of backlight module in the prior art；
Figure 5-8 is lamp bar rotation timing schematic illustration；
Fig. 9 is a kind of flow chart of the control method of backlight module provided in an embodiment of the present invention；
Figure 10 is a kind of structure chart of the control device of backlight module provided in an embodiment of the present invention.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
Embodiment one
Referring to Figure 1, Fig. 1 is a kind of structure chart of backlight module provided in an embodiment of the present invention, as shown in Figure 1, this reality
It applies example and a kind of backlight module is provided, comprising: substrate 1；Luminescence component 2 in the substrate 1 is set on the luminescence component 2
It is equipped at least one independent luminescence unit 3；Drive module 4, for driving the luminescence component 2 mobile；Control module is (in figure
It is not shown), for controlling the brightness of the luminescence unit 3, to adjust the bright dark degree of the luminescence component 2.
Specifically, the setting of luminescence component 2 is on the base 1, drive module 4 is connect with luminescence component 2, drives luminescence component 2
Mobile, movement may include one of translation, rotation or a variety of.At least one independent luminous list is provided on luminescence component 2
Member 3, control module is connect with luminescence unit 3, can be controlled luminescence unit 3.When luminescence unit 3 has multiple, mould is controlled
Block can respectively control each luminescence unit 3.
Control module controls the brightness of luminescence unit 3, it can be understood as, control module controls luminescence unit 3
It opens, the bright dark degree of closing and luminescence unit 3 in the on state.When luminescence unit 3 close when, luminescence unit 3 it is bright
It spends most dark.
Backlight module in the present embodiment, including substrate 1；At least one luminescence component 2 in the substrate 1, institute
It states and is provided at least one independent luminescence unit 3 on luminescence component 2；Drive module 4, for driving the luminescence component 2 to move
It is dynamic；Control module, for controlling the brightness of the luminescence unit 3, to adjust the bright dark degree of the luminescence component 2.In this way,
Drive module 4 drives luminescence component 2 mobile, and control module controls the brightness of luminescence unit 3, makes luminescence unit 3 can be in certain bits
The certain luminance that display matches with display panel corresponding position picture is set, to promote the contrast of display panel.It shines single
Multiplexing when member 3 may be implemented in different time points by shift position, so as to reduce the quantity of luminescence unit 3, finally
Reduce the cost and power consumption of product.
Further, the luminescence component 2 includes multiple lamp bars, is provided at least one light emitting diode in each lamp bar
LED；The drive module 4 is for driving the lamp bar to rotate；The control module is used to control the brightness of the LED.
In the present embodiment, the luminescence component 2 includes multiple lamp bars, and lamp bar is in a strip shape, is provided with one in each lamp bar
A or multiple LED.Control module is respectively controlled each LED, for example, by inputting different electric currents to LED, to control
The brightness of LED.When drive module 4 drives lamp bar rotation, it can be and rotated by origin of some position in lamp bar, such as lamp bar
Endpoint, the central point of lamp bar etc., the plane where when lamp bar rotates is parallel with substrate 1.Preferably, drive module 4 drives
When lamp bar rotates, rotated by origin of the central point of lamp bar.Drive module 4 can be motor, the rotation of motor drive lamp bar.
In the present embodiment, the luminescence component 2 includes multiple lamp bars, is provided at least one light-emitting diodes in each lamp bar
Pipe LED；The drive module 4 is for driving the lamp bar to rotate；The control module is used to control the brightness of the LED.This
Sample, control template can control the brightness of LED, meanwhile, drive module 4 drives lamp bar rotation, makes LED can be in specific position
The certain luminance that the picture of display and display panel corresponding position matches, to promote the contrast of display panel.Lamp bar is logical
Overwinding transfers position of the mobile LED relative to display panel, the multiplexing of LED in different time points may be implemented, so as to drop
The usage quantity of low LED, the final cost and power consumption for reducing product.
Further, as shown in Fig. 2, the multiple lamp bar includes the first lamp bar 21, the central point of first lamp bar 21
Orthographic projection in the substrate 1 is overlapped with the central point of the substrate 1, and the length of first lamp bar 21 is less than the substrate
1 width, the drive module 4 drive first lamp bar 21 to rotate around the central point of first lamp bar 21.Figure acceptance of the bid
Numbers 5 show light mixing chamber, and label 6 show display panel, and label 7 show optical film material, and label 8 show diffuser plate.Lamp
Item is arranged in the light mixing chamber 5 of backlight module, and top covers one layer of diffuser plate 8, and the brightness of lamp bar can be made to be atomized as far as possible, prevented out
Existing lamp shadow, so that display panel brightness irregularities.
In the present embodiment, the orthographic projection of the central point of the first lamp bar 21 on the base 1 is overlapped with the central point of substrate 1,
The length of first lamp bar 21 is less than the width of substrate 1, and drive module 4 drives the first lamp bar 21 around the center of the first lamp bar 21
Point rotation, in this way, the first lamp bar 21 is when rotated, overlayable region is using the central point of the first lamp bar 21 as origin first
The circle of a length of radius of the half of lamp bar 21.First lamp bar 21 can under the control of control module, realize display panel with the circle
The adjusting of the contrast in the corresponding region in region.Preferably, the length of the first lamp bar 21 is slightly less than the width of substrate 1, this
When rotated, overlayable region is larger for the first lamp bar of sample 21, can further decrease the quantity of luminescence unit 3, final to reduce
The cost and power consumption of product.
Further, as shown in Figure 2 and Figure 3, the multiple lamp bar further includes four that 1 corner location of substrate is arranged in
A second lamp bar 22；Region (such as Fig. 3 that first lamp bar 21 is covered with each spinning a cycle of second lamp bar 22
Region shown in middle dotted line) between partly overlap；Each second lamp bar 22 rotates between the region that a cycle is covered not
Overlapping.
In the present embodiment, the center of substrate 1 is arranged in the first lamp bar 21, and four the second lamp bars 22 are arranged in substrate
1 corner location.Drive module 4 drives each second lamp bar 22 to rotate around its central point.When rotation, the first lamp bar 21 and second
The angular speed having the same of lamp bar 22, and direction of rotation is on the contrary, to prevent the first lamp bar 21 and the second lamp bar 22 in rotary course
In collide.The angular velocity of rotation of each second lamp bar 22 is identical, and direction of rotation is identical.Direction shown in hollow arrow in Fig. 3
For lamp bar direction of rotation.
It is partially weighed between the region that first lamp bar 21 and each spinning a cycle of second lamp bar 22 are covered
It is folded；Each second lamp bar 22 rotates not to be overlapped between the region that a cycle is covered.The second lamp bar 22 being arranged in this way,
The partial region that the corner location of substrate 1 can be covered when rotation, further decreases the usage quantity of LED, final reduction product
Cost and power consumption, meanwhile, on the basis of the center of substrate 1 is provided with the first lamp bar 21, corner location is provided with
Two lamp bars 22 are, it can be achieved that rectangular backlight module effect.
Further, straight-down negative LED is not provided with by the region that lamp bar covers in the substrate 1, wherein described not by lamp
The region of item covering is the region and second lamp bar 22 that first lamp bar 21 rotates that a cycle covers in substrate 1
Rotate the region except the region of a cycle covering.
In the present embodiment, straight-down negative LED is not provided with by the region that lamp bar covers in substrate 1, display panel can be promoted
The transition effect of the picture of upper display.
Embodiment two
Fig. 9 is referred to, Fig. 9 is a kind of flow chart of the control method of backlight module provided in an embodiment of the present invention, such as Fig. 9
Shown, the embodiment of the present invention also provides a kind of control method of backlight module, applied to the backlight module in above-described embodiment, institute
The method of stating includes:
Step 101, the picture signal for obtaining the backlight module, the picture signal include that the luminescence component is mobile
Target position.
Step 102, control drive module drive the luminescence component to be moved to the target position.
The bright dark degree of step 103, the control luminescence component.
Be provided at least one independent luminescence unit on luminescence component, movement may include one of translation, rotation or
It is a variety of.Executing subject in the present embodiment is the control device of backlight module, and control device control luminescence component is moved to target
When position, then the location of pixels according to corresponding to target position, the luminescence unit for controlling luminescence component show the location of pixels
Pixel corresponding to brightness.
The control method of backlight module in the present embodiment, by obtaining the picture signal of the backlight module, the picture
Signal includes the mobile target position of the luminescence component；Control drive module drives the luminescence component to be moved to the target
Position；Control the bright dark degree of the luminescence component.In this way, luminescence unit can be shown in target position it is corresponding with target position
Brightness corresponding to pixel, to promote the contrast of display panel.Luminescence unit may be implemented by shift position in difference
Multiplexing when time point, so as to reduce the quantity of luminescence unit, the final cost and power consumption for reducing product.
Further, the luminescence component includes multiple lamp bars, and the lamp bar includes Light-emitting diode LED；
The step of step 103, the bright dark degree of the control luminescence component, comprising:
According to speed and angle that the picture signal, the drive module drive the luminescence component mobile, institute is obtained
State the timing control signal of LED.
According to the timing control signal, Xiang Suoshu LED applies electric current, to control the brightness of the LED.
Specifically, picture signal is the picture signal for the backlight module being based on rotation angle.When movement is rotates, driving
Module drive luminescence component mobile speed and angle, it can be understood as drive module drive luminescence component rotation angular speed and
Angle.
In display panel display, it can will show that signal decomposition is the display panel based on location of pixels by processor
The picture signal of picture element signal and the backlight module being based on rotation angle.Picture element signal is input to display panel, controls pixel
The opening and closing of liquid crystal realizes that the picture of display panel is shown.The picture signal of backlight module, angular velocity of rotation and angle with lamp bar
Signal, the timing control signal of LED is converted to by processor, and control device can be controlled single led.
According to the timing control signal of LED, specific electric current is inscribed when applying corresponding to every LED, controls the bright of each LED
Degree, so that showing the picture of high contrast on display panel.
Below by taking the white triangles shape that display panel is shown under a black picture background as an example, timing control is carried out to lamp bar
Process be illustrated.
HDR backlight in the prior art, displaying principle will be shown as shown in figure 4, display panel shows corresponding picture
LED in panel in backlight corresponding with triangle is all lighted.LED in the corresponding backlight of black background is all put out
It goes out, to promote the contrast of delta-shaped region and background area.The box of dark filling indicates that LED is illuminating state in Fig. 4,
White indicates OFF state.The LED quantity that HDR backlight in the prior art uses is larger, at high cost.
As shown in Figure 5-Figure 8, by carrying out the schematic diagram of timing control to lamp bar, 12 frames are divided into it are to rotate a circle
Example, Fig. 5 show the 1st frame picture, and lamp bar is rotated to 0 degree, and the picture that delta-shaped region is located on 0 degree of axis corresponds to LED and all opens
It opens, the overseas LED of delta extinguishes.The box of dark filling indicates that LED is illuminating state, white in lamp bar in figure 5-8
The box of filling indicates that LED is OFF state.
Fig. 6 show the 2nd frame picture, and to 30 degree, delta-shaped region is (empty for center lamp bar (can be regarded as the first lamp bar) rotation
Line indicates) picture that is located on 30 degree axis corresponds to LED and is all turned on, the overseas LED extinguishing of delta.It is shown simultaneously in Fig. 6
The state of the center lamp bar of 1st frame picture and the 2nd frame picture is (including the opening state for the LED for including in lamp bar position and lamp bar
State).
Fig. 7 show the 3rd frame picture, and center lamp bar is rotated to 60 degree, and delta-shaped region (dotted line expression) is located at 60 degree of axis
On picture correspond to LED and be all turned on, the overseas LED of delta extinguishes.The 1st frame picture to the 3rd frame is shown in Fig. 7 simultaneously
The state of the center lamp bar of picture.
Fig. 8 show the 12nd frame picture, and center lamp bar is rotated to 360 degree, and delta-shaped region (dotted line expression) is located at 360 degree
Picture on axis corresponds to LED and is all turned on, and the LED of delta-shaped region (dotted line expression) outside extinguishes.The 1st is shown in Fig. 8 simultaneously
Frame picture to the 12nd frame picture center lamp bar state.
According to figure 5-8 it is found that by carrying out timing control to center lamp bar, timing control is carried out to LED, it can be real
Now dynamic brightness control effect.
When practical application, the time that lamp bar rotates a circle needs to design in 14ms hereinafter, to prevent vision smear.It draws
Face frame number is also not necessarily limited to 12 frames, wherein frame number is bigger, shows the finer and smoother of picture, and display effect is better.
The control method of backlight module in the present embodiment drives the hair according to the picture signal, the drive module
Optical assembly mobile speed and angle, obtain the timing control signal of the LED；According to the timing control signal, Xiang Suoshu
LED applies electric current, to control the brightness of the LED.In this way, electric current can be applied to LED to control according to timing control signal
The brightness of LED, to promote the contrast of display panel.
Further, the multiple lamp bar includes the first lamp bar and four the second lamps that the substrate corner location is arranged in
Item.
Step 102, the step of control drive module drives the luminescence component to be moved to the target position, packet
It includes:
Control the first lamp bar and the second lamp bar angular velocity of rotation having the same that multiple lamp bars include, and first lamp
The direction of rotation of item and second lamp bar is on the contrary, so that the luminescence component is moved to the target position.
When rotation, the first lamp bar and the second lamp bar angular speed having the same, and direction of rotation is on the contrary, the first lamp can be prevented
Item collides in rotary course with the second lamp bar.
Embodiment three
0, Figure 10 is a kind of structure chart of the control device of backlight module provided in an embodiment of the present invention referring to Figure 1, this
Inventive embodiments also provide a kind of control device 300 of backlight module, applied to the backlight module in above-described embodiment, the control
Device 300 processed includes:
Module 301 is obtained, for obtaining the picture signal of the backlight module, the picture signal includes described luminous group
The mobile target position of part；
First control module 302 drives the luminescence component to be moved to the target position for controlling drive module；
Second control module 303, for controlling the bright dark degree of the luminescence component.
Further, the luminescence component includes multiple lamp bars, and the lamp bar includes Light-emitting diode LED；
Second control module 303, comprising:
Acquisition submodule, the speed for driving the luminescence component mobile according to the picture signal, the drive module
Degree and angle, obtain the timing control signal of the LED；
Control submodule, for according to the timing control signal, Xiang Suoshu LED to apply electric current, to control the LED's
Brightness.
Further, the multiple lamp bar includes the first lamp bar and four the second lamps that the substrate corner location is arranged in
Item, first control module are used for: controlling the first lamp bar and the second lamp bar rotation angle having the same that multiple lamp bars include
Speed, and the direction of rotation of first lamp bar and second lamp bar is on the contrary, so that the luminescence component is moved to the mesh
Cursor position.
Control device can be realized each process that control device is realized in embodiment two, and can reach same or similar
Beneficial effect, to avoid repeating, which is not described herein again.
The control device 300 of the embodiment of the present invention, by obtaining the picture signal of the backlight module, the picture signal
Including the mobile target position of the luminescence component；Control drive module drives the luminescence component to be moved to the target position
It sets；Control the bright dark degree of the luminescence component.In this way, luminescence unit can show picture corresponding with target position in target position
Brightness corresponding to element, to promote the contrast of display panel.Luminescence unit may be implemented when different by shift position
Between multiplexing when putting, so as to reduce the quantity of luminescence unit, the final cost and power consumption for reducing product.
The embodiment of the present invention also provides a kind of display device, including backlight module described in embodiment one and embodiment three
Described in backlight module control device.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of backlight module characterized by comprising
Substrate；
Luminescence component in the substrate is provided at least one independent luminescence unit on the luminescence component；
Drive module, for driving the luminescence component mobile；
Control module, for controlling the brightness of the luminescence unit, to adjust the bright dark degree of the luminescence component.
2. backlight module according to claim 1, which is characterized in that the luminescence component includes multiple lamp bars, each lamp
At least one Light-emitting diode LED is provided on item；
The drive module is for driving the lamp bar to rotate；
The control module is used to control the brightness of the LED.
3. backlight module according to claim 2, which is characterized in that the multiple lamp bar includes the first lamp bar, and described the
The orthographic projection of the central point of one lamp bar on the substrate is overlapped with the central point of the substrate, and the length of first lamp bar is small
In the width of the substrate, the drive module drives first lamp bar to rotate around the central point of first lamp bar.
4. backlight module according to claim 3, which is characterized in that the multiple lamp bar further includes being arranged in the substrate
Four the second lamp bars of corner location；
It partly overlaps between the region that first lamp bar and each spinning a cycle of second lamp bar are covered；
It is not overlapped between the region that each second lamp bar rotation a cycle is covered.
5. backlight module according to claim 4, which is characterized in that the region not covered by lamp bar in the substrate is arranged
There is straight-down negative LED, wherein the region not covered by lamp bar is that first lamp bar rotates what a cycle covered in substrate
Region except region and the region of second lamp bar rotation a cycle covering.
6. a kind of control method of backlight module, which is characterized in that be applied to backlight mould of any of claims 1-5
Group, which comprises
The picture signal of the backlight module is obtained, the picture signal includes the mobile target position of luminescence component；
Control drive module drives the luminescence component to be moved to the target position；
Control the bright dark degree of the luminescence component.
7. according to the method described in claim 6, it is characterized in that, the luminescence component includes multiple lamp bars, the lamp bar packet
Include Light-emitting diode LED；
The step of bright dark degree of the control luminescence component, comprising:
According to speed and angle that the picture signal, the drive module drive the luminescence component mobile, the LED is obtained
Timing control signal；
According to the timing control signal, Xiang Suoshu LED applies electric current, to control the brightness of the LED.
8. the method according to the description of claim 7 is characterized in that being applied to backlight module described in claim 4 or 5, institute
State the step of control drive module drives the luminescence component to be moved to the target position, comprising:
Control the first lamp bar and the second lamp bar angular velocity of rotation having the same that multiple lamp bars include, and first lamp bar with
The direction of rotation of second lamp bar is on the contrary, so that the luminescence component is moved to the target position.
9. a kind of control device of backlight module, which is characterized in that be applied to backlight mould of any of claims 1-5
Group, described device include:
Module is obtained, for obtaining the picture signal of the backlight module, the picture signal includes the mobile mesh of luminescence component
Cursor position；
First control module drives the luminescence component to be moved to the target position for controlling drive module；
Second control module, for controlling the bright dark degree of the luminescence component.
10. a kind of display device, which is characterized in that wanted including backlight module of any of claims 1-5 and right
The control device of backlight module described in asking 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN110032002A (en) * | 2019-04-12 | 2019-07-19 | 深圳康佳电子科技有限公司 | A kind of rotary backlight module of lamp bar and display device |
| US11003023B2 (en) * | 2018-05-09 | 2021-05-11 | Huizhou China Star Optoelectronics Technology Co., Ltd. | Dynamic light-mixing method of backlight module |
| CN113284429A (en) * | 2021-05-13 | 2021-08-20 | 纪红艳 | LED assembly for installing display screen |
| CN114236911A (en) * | 2021-12-28 | 2022-03-25 | 深圳创维光学科技有限公司 | Light-emitting structure, driving method and preparation method thereof, display screen and electronic equipment |
| CN115407565A (en) * | 2022-11-01 | 2022-11-29 | 惠科股份有限公司 | Backlight, display device and partition control method |
| US11886059B1 (en) * | 2022-10-12 | 2024-01-30 | HKC Corporation Limited | Display apparatus, control circuit, and anti-peeping display method |
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