CN209045138U - LED backlight unit, component, circuit and the display device of discrete component driving - Google Patents
LED backlight unit, component, circuit and the display device of discrete component driving Download PDFInfo
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- CN209045138U CN209045138U CN201821636454.8U CN201821636454U CN209045138U CN 209045138 U CN209045138 U CN 209045138U CN 201821636454 U CN201821636454 U CN 201821636454U CN 209045138 U CN209045138 U CN 209045138U
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Abstract
The LED backlight unit for the discrete component driving that the utility model embodiment proposes, component, in circuit and display device, by using the first discrete LED chip, first electronic switching tube and the second electronic switching tube are welded into driving circuit and form LED backlight unit, first LED chip is driven, overcome the shortcomings that traditional IC chip can not be independently controlled single LED chip, LED backlight circuit drives each LED chip in backlight LED array, solves the technique that existing LED backlight circuit is limited by backlight chip, the problem of can only being driven by the way of zonal control.
Description
Technical field
The utility model embodiment belongs to LED backlight unit, the group of field of display technology more particularly to discrete component driving
Part, circuit and display device.
Background technique
Currently, the backlight mode of array of display mainly includes passive (Passive Matrix, PM) backlight mode and active
(Active Matrix, AM) backlight mode.The advantage of lower cost of PM backlight mode is technically easier to realize, and AM backlight
The available better brightness uniformity of mode and contrast, higher resolution ratio, higher individually controllable property reduce ghost
Deng.
The backlight of common liquid crystal display is mostly the direct-light type LED backlight of collocation Local Dimming technology, this back
Although light technology can reduce the power consumption of display, display picture contrast, gray number are improved, and reduce ghost,
It is limited by the technique of backlight chip, subregion control can only be used using the straight-down negative Mini-LED backlight of Local Dimming technology
The mode of system, so that multiple Mini-LED in each region can only carry out backlight with identical electric current, flexibility is poor.
Utility model content
The utility model embodiment provides LED backlight unit, component, circuit and the display device of discrete component driving,
It aims to solve the problem that existing LED backlight circuit is limited by the technique of backlight chip, can only be driven by the way of zonal control
The problem of.
The utility model embodiment proposes a kind of LED backlight unit of discrete component driving, the LED back light unit
It include: the first LED chip, the first electronic switching tube and the second electronic switching tube；
Scanning signal input terminal of the control terminal of first electronic switching tube as the LED backlight unit, described
First data signal input of the current input terminal of one electronic switching tube as the LED backlight unit, first electronics
The control terminal of the current output terminal of switching tube and second electronic switching tube is connected to the first of the LED backlight unit and deposits
Storage holds incoming end, ground terminal of the current output terminal of second electronic switching tube as the LED backlight unit, and described the
The current input terminal of two electronic switching tubes is connect with the cathode of first LED chip, the positive conduct of first LED chip
The power end of the LED backlight unit.
Optionally, the LED backlight unit is set on printed circuit board；
The printed circuit board includes the first layer printed circuit board and the second layer printed circuit board, wherein first print
Printed circuit board layer is provided with the first metal electrode, and second layer printed circuit board is provided with the second metal electrode；
First metal electrode and second metal electrode correspond, wherein first metal electrode with it is right
Second metal electrode answered is oppositely arranged, and is connect with being formed with the first storage capacitance incoming end of the LED backlight unit
The first storage capacitance；
First end and the first storage capacitance incoming end of first metal electrode as first storage capacitance
Connection, second metal electrode connect as the second end of first storage capacitance and the ground terminal of the LED backlight unit
It connects.
Optionally, the LED backlight unit further include: the second LED chip, third LED chip, third electronic switching tube,
4th electronic switching tube, the 5th electronic switching tube, the 6th electronic switching tube；
The control terminal of the third electronic switching tube, the control terminal of the 5th electronic switching tube and the LED backlight list
The scanning signal input terminal connection of member, the current input terminal of the third electronic switching tube as the LED backlight unit the
Two data signal inputs, third data of the current input terminal of the 5th electronic switching tube as the LED backlight unit
The control terminal of signal input part, the current output terminal of the third electronic switching tube and the 4th electronic switching tube connects conduct altogether
Second storage capacitance incoming end of the LED backlight unit, the current output terminal and the described 6th of the 5th electronic switching tube
The control terminal of electronic switching tube connects the third storage capacitance incoming end as the LED backlight unit, the 4th electronic cutting altogether
The ground terminal for closing the current output terminal of pipe, the current output terminal of the 6th electronic switching tube and the LED backlight unit is total
It connects, the current input terminal of the 4th electronic switching tube is connect with the cathode of second LED chip, the 6th electronic switch
The current input terminal of pipe is connect with the cathode of the third LED chip, positive, described 3rd LED of the 2nd LED chip
The power end of the positive and described LED backlight unit of chip connects altogether.
Optionally, first electronic switching tube is set in thin film transistor backplane, the second electronic switching tube weldering
It connects in the thin film transistor backplane.
Another embodiment of the utility model additionally provides a kind of LED backlight component, the LED backlight component include: as
LED backlight unit described in above-described embodiment and the packaging body for encapsulating the LED backlight unit；
The packaging body include: power interface, scanning line interface, the first data line interface, the first storage capacitance interface with
And ground interface；
The power end of the LED backlight unit is connect with the power interface, and the scanning signal of the LED backlight unit is defeated
Enter end to connect with the scanning line interface, the first data signal input of the LED backlight unit and first data line
Interface connection, the first storage capacitance incoming end of the LED backlight unit is connect with the first storage capacitance interface, described
The ground terminal of LED backlight unit is connect with the ground interface.
Optionally, in the packaging body further include: the first storage capacitance, the first end of first storage capacitance with it is described
First storage capacitance incoming end of LED backlight unit connects, the second end of first storage capacitance and connecing for the packaging body
The connection of ground interface.
Optionally, the LED backlight unit further include:
Second LED chip, third LED chip, third electronic switching tube, the 4th electronic switching tube, the 5th electronic switching tube,
6th electronic switching tube, the second storage capacitance and third storage capacitance；
The packaging body further include: the second data line interface and third data line interface；
The control terminal of the third electronic switching tube, the control terminal of the 5th electronic switching tube and the LED backlight list
The scanning signal input terminal connection of member, the current input terminal of the third electronic switching tube as the LED backlight unit the
Two data signal inputs are connect with second data line interface, and the current input terminal of the 5th electronic switching tube is as institute
The third data signal input for stating LED backlight unit is connect with the third data line interface, the third electronic switching tube
Current output terminal, the first end of second storage capacitance and the control terminal of the 4th electronic switching tube connect altogether, it is described
The control of the current output terminal of 5th electronic switching tube, the first end of the third storage capacitance and the 6th electronic switching tube
End processed connects altogether, the current output terminal of the 4th electronic switching tube, the current output terminal of the 6th electronic switching tube, described
The ground terminal of the second end of two storage capacitances, the second end of the third storage capacitance and the LED backlight unit connects altogether, institute
The current input terminal for stating the 4th electronic switching tube is connect with the cathode of second LED chip, the 6th electronic switching tube
Current input terminal is connect with the cathode of the third LED chip, positive, the described third LED chip of second LED chip
The power end of the positive and described LED backlight unit connects altogether.
Another embodiment of the utility model also provides a kind of LED backlight circuit, comprising: power supply line, ground line and battle array
Multiple LED backlight units described in any of the above embodiments of column distribution；Wherein, LED back light unit described in every row is arranged one first
A scan line is arranged in data line, LED backlight unit described in each column；
The scanning signal input terminal of the LED backlight unit is connected with the corresponding scan line, the LED backlight list
First data signal input of member is connected with corresponding first data line, the power end of the LED backlight unit and institute
Power supply line connection is stated, the ground terminal of the LED backlight unit and the ground line connect, and the first of the LED backlight unit is deposited
Storage is held incoming end and is connected by corresponding first storage capacitance and the ground line.
Optionally, the LED backlight unit further include: the second LED chip, third LED chip, third electronic switching tube,
4th electronic switching tube, the 5th electronic switching tube, the 6th electronic switching tube, the second storage capacitance and third storage capacitance；Its
In, LED backlight unit described in every row also sets up second data line and a third data line；
The control terminal of the third electronic switching tube, the control terminal of the 5th electronic switching tube and the LED backlight list
The scanning signal input terminal connection of member, the current input terminal of the third electronic switching tube as the LED backlight unit the
Two data signal inputs are connected with corresponding second data line, the current input terminal conduct of the 5th electronic switching tube
The third data signal input of the LED backlight unit is connected with the corresponding third data line, the third electronic cutting
The control terminal of the current output terminal and the 4th electronic switching tube that close pipe connects the second storage as the LED backlight unit altogether
Capacitor incoming end, and connect by corresponding second storage capacitance with the ground terminal of the LED backlight unit, the 5th electronics
The control terminal of the current output terminal of switching tube and the 6th electronic switching tube connects altogether deposits as the third of the LED backlight unit
Storage holds incoming end, and is connect by corresponding third storage capacitance with the ground terminal of the LED backlight unit, the 4th electricity
The ground connection of the current output terminal of sub switch pipe, the current output terminal of the 6th electronic switching tube and the LED backlight unit
End connects altogether, and the current input terminal of the 4th electronic switching tube is connect with the cathode of second LED chip, the 6th electronics
The current input terminal of switching tube is connect with the cathode of the third LED chip, positive, the described third of second LED chip
The power end of the positive and described LED backlight unit of LED chip connects altogether.
Another embodiment of the utility model also provides a kind of display device comprising:
Display panel, the display panel include multiple LED backlight units as described in above-mentioned any one；And
Control unit, described control unit and the display panel are electrically connected, wherein described control unit is for driving
The display panel.
LED backlight unit, component, circuit and the display device for the discrete component driving that the utility model embodiment proposes
In, driving circuit shape is welded by using the first discrete LED chip, the first electronic switching tube and the second electronic switching tube
At LED backlight unit, the first LED chip is driven, overcoming traditional IC chip can not be to single LED chip
The shortcomings that being independently controlled drives LED backlight circuit to each LED chip in backlight LED array,
It solves the technique that existing LED backlight circuit is limited by backlight chip, can only be driven by the way of zonal control
Problem.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the utility model,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.
Fig. 1 is the structural schematic diagram for the LED backlight unit that one embodiment of the utility model provides；
Fig. 2 is the structural schematic diagram for the LED backlight unit that another embodiment of the utility model provides；
Fig. 3 is the structural schematic diagram for the LED backlight unit that another embodiment of the utility model provides；
Fig. 4 is a kind of structural schematic diagram for LED backlight component that one embodiment of the utility model provides；
Fig. 5 is a kind of structural schematic diagram for LED backlight component that another embodiment of the utility model provides；
Fig. 6 is a kind of structural schematic diagram for LED backlight component that another embodiment of the utility model provides；
Fig. 7 is a kind of structural schematic diagram for LED backlight component that another embodiment of the utility model provides；
Fig. 8 is a kind of structural schematic diagram for LED backlight circuit that one embodiment of the utility model provides；
Fig. 9 is the structural schematic diagram for the display device that the utility model one embodiment proposes.
Specific embodiment
In order to make those skilled in the art better understand the scheme of the utility model, below in conjunction with the utility model reality
The attached drawing in example is applied, the technical scheme in the embodiment of the utility model is explicitly described, it is clear that described embodiment
It is the embodiment of the utility model a part, instead of all the embodiments.Based on the embodiments of the present invention, this field
Those of ordinary skill's every other embodiment obtained without making creative work all should belong to practical
Novel protected range.
The specification and claims of the utility model and term " includes " and their any changes in above-mentioned attached drawing
Shape, it is intended that cover and non-exclusive include.Such as process, method comprising a series of steps or units or system, product or
Equipment is not limited to listed step or unit, but optionally further comprising the step of not listing or unit or optional
Ground further includes the other step or units intrinsic for these process, methods, product or equipment.In addition, term " first ", " the
Two " and " third " etc. are for distinguishing different objects, not for description particular order.
It is limited by the ability of driving IC, can only take LED array the mode of zonal control, i.e., several of each region
LED can only be driven simultaneously with identical electric current.This mode can not achieve single control to LED array, dynamic range compared with
It is low.If the driving method of external IC is used, to realize the control of single LED, the quantity of IC, the quantity of winding displacement and print
The wiring density of printed circuit board can be increased with geometric progression, considerably increase the cost of raw material and technology difficulty, it is difficult to realization amount
It produces.LED backlight circuit needs biggish current density, therefore, is merely able to realize LED array using the driving method of external IC
PM driving, and can not achieve AM driving.
The utility model embodiment by welding LED backlight unit on a printed circuit, using discrete MOS device
Higher electric current is born, to carry out AM driving to LED array, the difficulty of LED can not be driven by overcoming thin-film transistor circuit.Into
One step, it is operated alone by the LED chip to three kinds of colors in LED backlight unit, does not have to increase significantly driving core
Piece and driver circuit, wherein individually controlled for each LED chip, high dynamic range images (High- can be improved
Dynamic Range, HDR) effect and picture reduced value.
The basic unit that discrete electronic device in the utility model embodiment refers to independent circuits function, constitutes circuit
Electronic device, for example, resistance, capacitor, inductor, electromechanical compo (connector, switch, relay etc.), electro-acoustic element, photoelectricity
Device, sensitive components, display device, piezoelectric device etc..
Fig. 1 is the structural schematic diagram for the LED backlight unit that one embodiment of the utility model provides.
As shown in Figure 1, the LED backlight unit 30 in the present embodiment includes: the first LED chip D1, the first electronic switching tube
M1 and the second electronic switching tube M2；
Scanning signal input terminal 33 of the control terminal of first electronic switching tube M1 as LED backlight unit 30, the first electronics
First data signal input 341 of the current input terminal of switching tube M1 as LED backlight unit 30, the first electronic switching tube M1
Current output terminal and the second electronic switching tube M2 control terminal be connected to LED backlight unit 30 the first storage capacitance access
End 351, ground terminal of the current output terminal of the second electronic switching tube M2 as LED backlight unit 30, the second electronic switching tube M2
Current input terminal connect with the cathode of the first LED chip D1, the anode of the first LED chip D1 is as LED backlight unit 30
Power end 31.
In one embodiment, the first LED chip D1 is Mini-LED chip, Mini-LED be using accurate device and
Accurate packaged type realizes a kind of display screen of time millimetre-sized pixel particle, therefore, Mini-LED also known as be time millimeter hair
Optical diode, Mini-LED integrated level with higher can be realized one millimeter of more dot spacing below.
In one embodiment, LED backlight unit 30 is welded on a printed circuit, not only using discrete electronic device
It can be independently controlled for each Mini-LED chip, and include that individually driving is electric in LED backlight unit 30
Road can use AM backlight mode, the available better brightness uniformity of AM backlight mode and contrast, more to Mini-LED
High resolution ratio, higher individually controllable property reduce ghost etc..
As an embodiment of the present invention, Fig. 2 is the knot for the LED backlight unit that another embodiment of the utility model provides
Structure schematic diagram.
As shown in Fig. 2, the LED backlight unit 30 in the present embodiment is set on printed circuit board；
Printed circuit board includes the first layer printed circuit board 11 and the second layer printed circuit board 12, wherein the first printing electricity
Road plate floor 11 is provided with the first metal electrode 111, and the second layer printed circuit board 12 is provided with the second metal electrode 121.
Specifically, the first metal electrode 111 and the second metal electrode 121 correspond, wherein the first metal electrode 111
It is oppositely arranged with corresponding second metal electrode 121, to form the first storage capacitance incoming end 351 with LED backlight unit 30
First storage capacitance of connection；
First metal electrode 111 is connect as the first end of the first storage capacitance with the first storage capacitance incoming end 351,
Second metal electrode 121 is connect as the second end of the first storage capacitance with the ground terminal 32 of LED backlight unit 30.
In one embodiment, when printed circuit board is single layer board, the first layer printed circuit board 11 and the second printing
Board layer 12 is distinguished respectively as printed circuit board obverse and reverse, i.e. the first metal electrode 111 and the second metal electrode 121
Set on the obverse and reverse of printed circuit board.
In the present embodiment, by the way that the first storage capacitance is independent, be set in printed circuit board, evaded volume compared with
Big capacitor reduces the volume of LED backlight unit 30.
As the utility model one embodiment, the first metal electrode 111 and the second metal electrode 121 are metallic copper
Piece.In the present embodiment, the area of metal copper sheet can need to be arranged according to user, by changing two metals being oppositely arranged
The corresponding area of copper sheet changes the capacitance of storage capacitance.
As the utility model one embodiment, insulation is equipped between the first metal electrode 111 and the second metal electrode 121
Dielectric.In the present embodiment, the capacitance C=ε S/4 π kd of capacitor, wherein ε is dielectric constant, and k is electrostatic force constant, S
For two plate positive areas, d is the distance between the first metal electrode 111 and the second metal electrode 121.Specifically, passing through adjusting
The distance between the first metal electrode 111 and the second metal electrode 121 is adjusted in the thickness of insulation dielectric, to reach
To the purpose for the capacitance for needing to change capacitor according to user.
As an embodiment of the present invention, Fig. 3 is the structure for the LED backlight unit that an embodiment of the present invention provides
Schematic diagram, as shown in figure 3, LED backlight unit 30 further include: the second LED chip D2, third LED chip D3, third electronic switch
Pipe M3, the 4th electronic switching tube M4, the 5th electronic switching tube M5, the 6th electronic switching tube M6.
Specifically, the control terminal of third electronic switching tube M3, the control terminal and LED backlight list of the 5th electronic switching tube M5
The scanning signal input terminal 33 of member 30 connects, the current input terminal of third electronic switching tube M3 as LED backlight unit 30 the
The current input terminal of two data signal inputs 342, the 5th electronic switching tube M5 is believed as the third data of LED backlight unit 30
Number input terminal 343, the current output terminal of third electronic switching tube M3 and the control terminal of the 4th electronic switching tube M4 are connect altogether as LED
Second storage capacitance incoming end 352 of back light unit 30, the current output terminal and the 6th electronic switch of the 5th electronic switching tube M5
The control terminal of pipe M6 connects the third storage capacitance incoming end 353 as LED backlight unit 30, the electricity of the 4th electronic switching tube M4 altogether
Stream output end, the current output terminal of the 6th electronic switching tube M6 and the ground terminal of LED back light unit 30 connect altogether, the 4th electronics
The current input terminal of switching tube M4 is connect with the cathode of the second LED chip D2, the current input terminal of the 6th electronic switching tube M6 with
The cathode of third LED chip D3 connects, the anode and LED backlight list of the anode of the second LED chip D2, third LED chip D3
The power end of member 30 connects altogether.
In one embodiment, the first layer printed circuit board 11 is additionally provided with third metal electrode 112 and the 4th metal electrode
113, the second layer printed circuit board 12 is additionally provided with fifth metal electrode 122 and the 6th metal electrode 123, third metal electrode 112
It is oppositely arranged with fifth metal electrode 122, is connect with formation with the second storage capacitance incoming end 252 of LED backlight unit 30
Second storage capacitance, the 4th metal electrode 113 are oppositely arranged with the 6th metal electrode 123, to be formed and LED backlight unit 30
The third storage capacitance that third storage capacitance incoming end 253 connects.
Specifically, the second storage capacitance interface 352 is connect with third metal electrode 112, fifth metal electrode 122 with connect
Ground interface 32 connects, and third storage capacitance interface 353 is connect with the 4th metal electrode 113, and the 6th metal electrode 123 connects with ground connection
Mouth 32 connects.
As an embodiment of the present invention, the first electronic switching tube M1 is set in thin film transistor backplane, the second electricity
Sub switch pipe M2 is welded in thin film transistor backplane.
In one embodiment, the first electronic switching tube M1 be produced on thin film transistor (TFT) (Thin Film Transistor,
TFT) on backboard, wherein the connecting line of LED backlight unit 30 is also produced in TFT backplate, and the second electronic switching tube M2 is discrete
The interface of the second electronic switching tube M2 is arranged for welding the second electronic switching tube M2 in component in TFT backplate.
In one embodiment, the solder joint for welding the first LED chip D1, the first LED core are additionally provided in TFT backplate
Piece D1 is directly welded in TFT backplate.
In one embodiment, the first electronic switching tube M1 and the second electronic switching tube M2 is metal-oxide-semiconductor, in TFT backplate
Electric current required for the unbearable LED chip of the metal-oxide-semiconductor of middle production realizes the drive to LED chip by using discrete metal-oxide-semiconductor
It is dynamic.
In one embodiment, when metal-oxide-semiconductor is p-type metal-oxide-semiconductor, then the drain electrode of p-type metal-oxide-semiconductor is exported as the electric current of metal-oxide-semiconductor
End, current input terminal of the source electrode of p-type metal-oxide-semiconductor as metal-oxide-semiconductor, control terminal of the grid of p-type metal-oxide-semiconductor as metal-oxide-semiconductor.
In one embodiment, when metal-oxide-semiconductor is N-type metal-oxide-semiconductor, then the drain electrode of N-type metal-oxide-semiconductor is inputted as the electric current of metal-oxide-semiconductor
End, current output terminal of the source electrode of N-type metal-oxide-semiconductor as metal-oxide-semiconductor, control terminal of the grid of N-type metal-oxide-semiconductor as metal-oxide-semiconductor.
As an embodiment of the present invention, Fig. 4 is a kind of LED backlight that one embodiment of the utility model provides
The structural schematic diagram of component.
As shown in figure 4, LED backlight component includes: such as the LED backlight unit 30 of above-described embodiment and for encapsulating LED back
The packaging body 40 of light unit；
Packaging body 40 includes: that power interface 41, scanning line interface 43, the first data line interface 441, the first storage capacitance connect
Mouth 451 and ground interface 42；
Specifically, the power end 31 of LED backlight unit 30 is connect with power interface 41, the scanning letter of LED backlight unit 30
Number input terminal 33 is connect with scanning line interface 43, the first data signal input 341 of LED backlight unit 30 and the first data line
Interface 441 connects, and the first storage capacitance incoming end 351 of LED backlight unit 30 is connect with the first storage capacitance interface 451, LED
The ground terminal 32 of back light unit 30 is connect with ground interface 42.
In the present embodiment, by the way that LED backlight unit 30 to be encapsulated in packaging body 40, to reduce on printed circuit board
Solder joint.When welding on a printed circuit, solder joint is more, and the cabling in printed circuit board is more complicated, and design is got over
Difficulty, cost is higher, due to the connection of the electronic component of LED backlight unit 30 be it is fixed, by 30 envelope of LED backlight unit
In packaging body 40, to form the liquid crystal backlight of an included driving function, replaced to reach using built-in drive circuit
For external driving chip and winding displacement, so that in the case where not increasing significantly the wiring density of printed circuit board, to each LED light
Source is individually controlled, and does not increase the complexity of driving circuit.
In one embodiment, the color of the first LED chip D1 can need to be arranged according to user, by by the first LED
Chip D1, the first electronic switching tube M1 and the second electronic switching tube M2 are packaged, and the LED that discrete device can be formed is carried on the back
The contact number of light unit 30 is reduced from 8 to 5, i.e. the interface of packaging body 30 includes: power interface 31, scanning line interface
33, the first data line interface 341, the first storage capacitance interface 351 and ground interface 32, user can according to need direct incite somebody to action
LED backlight assembly after encapsulation is soldered on printed circuit board, to simplify the cabling design of printed circuit board.
As an embodiment of the present invention, Fig. 5 is a kind of LED backlight that another embodiment of the utility model provides
The structural schematic diagram of component.
As shown in figure 5, in packaging body 40 further include: the first storage capacitance C1, the first end of the first storage capacitance C1 with
First storage capacitance incoming end 32 of LED backlight unit 30 connects, the first second end of storage capacitance C1 and connecing for packaging body 40
Ground interface 42 connects.
As an embodiment of the present invention, Fig. 6 is a kind of LED backlight that another embodiment of the utility model provides
The structural schematic diagram of component.
As shown in fig. 6, LED backlight unit 30 further include:
Second LED chip D2, third LED chip D3, third electronic switching tube M3, the 4th electronic switching tube M4, the 5th electricity
Sub switch pipe M5 and the 6th electronic switching tube M6；
Packaging body further include: the second data line interface 442 and third data line interface 443；
Control terminal, the 5th control terminal of electronic switching tube M5 and the sweeping for LED backlight unit 30 of third electronic switching tube M3
The connection of signal input part 43 is retouched, the current input terminal of third electronic switching tube M3 is believed as the second data of LED back light unit 30
Number input terminal 342 is connect with the second data line interface 442, and the current input terminal of the 5th electronic switching tube M5 is as LED backlight list
The third data signal input 343 of member 40 is connect with third data line interface 443, the electric current output of third electronic switching tube M3
The control terminal of end and the 4th electronic switching tube M4 connect altogether, the current output terminal and the 6th electronic cutting of the 5th electronic switching tube M5
The control terminal for closing pipe M6 connects altogether, the current output terminal of the current output terminal of the 4th electronic switching tube M4, the 6th electronic switching tube M6
And the ground terminal 32 of LED backlight unit 30 connects altogether, the current input terminal of the 4th electronic switching tube M4 and the second LED chip D2's
Cathode connection, the current input terminal of the 6th electronic switching tube M6 are connect with the cathode of third LED chip D3, the second LED chip D2
Anode, the anode of third LED chip D3 and the power end 31 of LED backlight unit 30 connect altogether.
In one embodiment, the first LED chip D1, the second LED chip D2 and third LED chip D3 can be sent out respectively
Red out, green and blue light.
In one embodiment, by by the first LED chip D1, the second LED chip D2, the 3rd LED chip D3 and its
Driving element is packaged, can be by the contact number of the LED back light unit 30 of the LED chip comprising three kinds of colors from 15
It reduces to 9, i.e. the interface of packaging body 30 includes: power interface 31, scanning line interface 33, the first data line interface 341, first
Storage capacitance interface 351, ground interface 32, the second data line interface 342, third data line interface 343, the second storage capacitance connect
Mouthfuls 352 and third storage capacitance interface 353, user can according to need directly by the LED backlight components welding after encapsulation extremely
On printed circuit board, to simplify the cabling design of printed circuit board.As an embodiment of the present invention, Fig. 7 is that this is practical
A kind of structural schematic diagram for LED backlight component that novel another embodiment provides.
As shown in fig. 7, LED backlight unit 30 further include: the second storage capacitance C2 and third storage capacitance C3.Wherein,
First the second storage capacitance incoming end 352 of termination of two storage capacitance C2, the first termination third storage of third storage capacitance C3
Capacitor incoming end 353, second end, the second end and LED backlight unit 30 of third storage capacitance C3 of the second storage capacitance C2
Ground terminal 32 connect.
LED backlight unit 30 in the present embodiment is packaged in packaging body 40, at this point, the interface of packaging body 40 includes: electricity
Source interface 31, scanning line interface 33, the first data line interface 341, ground interface 32, the second data line interface 342 and third
Data line interface 343, to will will include that the contact number of LED backlight unit 30 of LED chip of three kinds of colors subtracts from 15
As little as 6.
As an embodiment of the present invention, Fig. 8 is a kind of LED backlight that one embodiment of the utility model provides
The structural schematic diagram of circuit.
As shown in figure 8, the LED backlight circuit in the present embodiment, comprising: power supply line, ground line and array distribution it is more
The LED backlight unit 30 of a any of the above-described；Wherein, first data line, each column LED is arranged in every row LED backlight unit 30
A scan line is arranged in back light unit 30；
The scanning signal input terminal of LED backlight unit 30 is connected with corresponding scan line, and the first of LED backlight unit 30
Data signal input is connected with corresponding first data line, and the power end of LED backlight unit 30 is connect with power supply line, LED back
The ground terminal and ground line of light unit 30 connect, and the first storage capacitance incoming end of LED backlight unit 30 passes through corresponding first
Storage capacitance and ground line connect.
As an embodiment of the present invention, LED backlight unit 30 further include: the second LED chip D2, third LED chip
D3, third electronic switching tube M3, the 4th electronic switching tube M4, the 5th electronic switching tube M5, the 6th electronic switching tube M6, second are deposited
Storage holds C2 and third storage capacitance C3；Wherein, every row LED backlight unit 30 also sets up one article of second data line and one article
Three data lines；
Control terminal, the 5th control terminal of electronic switching tube M5 and the sweeping for LED backlight unit 30 of third electronic switching tube M3
Retouch signal input part connection, second data-signal of the current input terminal of third electronic switching tube M3 as LED back light unit 30
Input terminal is connected with corresponding second data line, and the current input terminal of the 5th electronic switching tube M5 is as LED backlight unit 30
Third data signal input is connected with corresponding third data line, the current output terminal of third electronic switching tube M3 and the 4th electricity
The control terminal of sub switch pipe M4 connects the second storage capacitance incoming end as LED backlight unit 30 altogether, and passes through corresponding second
Storage capacitance C2 is connect with the ground terminal of LED backlight unit 30, the current output terminal and the 6th electronics of the 5th electronic switching tube M5
The control terminal of switching tube M6 connects the third storage capacitance incoming end as LED backlight unit 30 altogether, and is deposited by corresponding third
Storage is held C3 and is connect with the ground terminal of LED backlight unit 30, current output terminal, the 6th electronic switch of the 4th electronic switching tube M4
The current output terminal of pipe M6 and the ground terminal of LED back light unit 30 connect altogether, the current input terminal of the 4th electronic switching tube M4 with
The cathode of second LED chip D2 connects, and the current input terminal of the 6th electronic switching tube M6 and the cathode of third LED chip D3 connect
It connects, anode, the anode of third LED chip D3 and the power end of LED backlight unit 30 of the second LED chip D2 connects altogether.
Fig. 9 is the structural schematic diagram for the display device that the utility model one embodiment proposes.
As shown in figure 9, the display device 60 in the present embodiment includes:
Display panel 62, display panel 62 include multiple LED backlight units 30 as described in above-mentioned any one embodiment,
Multiple LED backlight units are set on printed circuit board in array；And
Control unit 61, for driving display panel 62, control unit 61 electrically connects control unit 61 with display panel 62
It connects.
In one embodiment, control unit 61 can pass through universal integrated circuit, such as central processing unit
(Central Processing Unit, CPU), or pass through specific integrated circuit (Application Specific
Integrated Circuit, ASIC) Lai Shixian.
In one embodiment, display panel 62 includes the pixel array being made of multirow pixel and multiple row pixel.
LED backlight unit, component, circuit and the display device for the discrete component driving that the utility model embodiment proposes
In, driving circuit shape is welded by using the first discrete LED chip, the first electronic switching tube and the second electronic switching tube
At LED backlight unit, the first LED chip is driven, overcoming traditional IC chip can not be to single LED chip
The shortcomings that being independently controlled drives LED backlight circuit to each LED chip in backlight LED array,
It solves the technique that existing LED backlight circuit is limited by backlight chip, can only be driven by the way of zonal control
Problem.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. a kind of LED backlight unit of discrete component driving, which is characterized in that the LED backlight unit includes: the first LED core
Piece, the first electronic switching tube and the second electronic switching tube；
Scanning signal input terminal of the control terminal of first electronic switching tube as the LED backlight unit, first electricity
First data signal input of the current input terminal of sub switch pipe as the LED backlight unit, first electronic switch
The control terminal of the current output terminal of pipe and second electronic switching tube is connected to the first storage electricity of the LED backlight unit
Hold incoming end, ground terminal of the current output terminal of second electronic switching tube as the LED backlight unit, second electricity
The current input terminal of sub switch pipe is connect with the cathode of first LED chip, described in the anode conduct of first LED chip
The power end of LED backlight unit.
2. LED backlight unit as described in claim 1, which is characterized in that the LED backlight unit is set to printed circuit board
On；
The printed circuit board includes the first layer printed circuit board and the second layer printed circuit board, wherein the first printing electricity
Road plate floor is provided with the first metal electrode, and second layer printed circuit board is provided with the second metal electrode；
First metal electrode and second metal electrode correspond, wherein first metal electrode with it is corresponding
Second metal electrode is oppositely arranged, to form connect with the first storage capacitance incoming end of the LED backlight unit the
One storage capacitance；
First metal electrode is connect as the first end of first storage capacitance with the first storage capacitance incoming end,
Second metal electrode is connect as the second end of first storage capacitance with the ground terminal of the LED backlight unit.
3. LED backlight unit as described in claim 1, which is characterized in that the LED backlight unit further include: the second LED core
Piece, third LED chip, third electronic switching tube, the 4th electronic switching tube, the 5th electronic switching tube, the 6th electronic switching tube；
The control terminal of the third electronic switching tube, the control terminal of the 5th electronic switching tube and the LED back light unit
The connection of scanning signal input terminal, second number of the current input terminal of the third electronic switching tube as the LED backlight unit
According to signal input part, third data-signal of the current input terminal of the 5th electronic switching tube as the LED backlight unit
Input terminal, the current output terminal of the third electronic switching tube and the control terminal of the 4th electronic switching tube are connect altogether as described
Second storage capacitance incoming end of LED backlight unit, the current output terminal and the 6th electronics of the 5th electronic switching tube
The control terminal of switching tube connects the third storage capacitance incoming end as the LED backlight unit, the 4th electronic switching tube altogether
Current output terminal, the current output terminal of the 6th electronic switching tube and the ground terminal of the LED backlight unit connect altogether, institute
The current input terminal for stating the 4th electronic switching tube is connect with the cathode of second LED chip, the 6th electronic switching tube
Current input terminal is connect with the cathode of the third LED chip, positive, the described third LED chip of second LED chip
The power end of the positive and described LED backlight unit connects altogether.
4. LED backlight unit as described in claim 1, which is characterized in that first electronic switching tube is set to film crystalline substance
In body pipe backboard, second electronic switching tube is welded in the thin film transistor backplane.
5. a kind of LED backlight component, which is characterized in that the LED backlight component includes: LED backlight as described in claim 1
Unit and packaging body for encapsulating the LED backlight unit；
The packaging body includes: power interface, scanning line interface, the first data line interface, the first storage capacitance interface and connects
Ground interface；
The power end of the LED backlight unit is connect with the power interface, the scanning signal input terminal of the LED backlight unit
It is connect with the scanning line interface, the first data signal input of the LED backlight unit and first data line interface
Connection, the first storage capacitance incoming end of the LED backlight unit are connect with the first storage capacitance interface, the LED back
The ground terminal of light unit is connect with the ground interface.
6. LED backlight component as claimed in claim 5, which is characterized in that in the packaging body further include: the first storage electricity
To hold, the first end of first storage capacitance is connect with the first storage capacitance incoming end of the LED backlight unit, and described first
The second end of storage capacitance is connect with the ground interface of the packaging body.
7. LED backlight component as claimed in claim 5, which is characterized in that the LED backlight unit further include:
Second LED chip, third LED chip, third electronic switching tube, the 4th electronic switching tube, the 5th electronic switching tube, the 6th
Electronic switching tube, the second storage capacitance and third storage capacitance；
The packaging body further include: the second data line interface and third data line interface；
The control terminal of the third electronic switching tube, the control terminal of the 5th electronic switching tube and the LED backlight unit
The connection of scanning signal input terminal, second number of the current input terminal of the third electronic switching tube as the LED backlight unit
It is connect according to signal input part with second data line interface, described in the current input terminal conduct of the 5th electronic switching tube
The third data signal input of LED backlight unit is connect with the third data line interface, the third electronic switching tube
The control terminal of current output terminal, the first end of second storage capacitance and the 4th electronic switching tube connects altogether, and described
The control of the current output terminal of five electronic switching tubes, the first end of the third storage capacitance and the 6th electronic switching tube
End connects altogether, the current output terminal of the 4th electronic switching tube, the current output terminal of the 6th electronic switching tube, described second
The ground terminal of the second end of storage capacitance, the second end of the third storage capacitance and the LED backlight unit connects altogether, described
The current input terminal of 4th electronic switching tube is connect with the cathode of second LED chip, the electricity of the 6th electronic switching tube
Stream input terminal is connect with the cathode of the third LED chip, and positive, the described third LED chip of second LED chip is just
The power end of pole and the LED backlight unit connects altogether.
8. a kind of LED backlight circuit characterized by comprising power supply line, ground line and array distribution it is multiple as right is wanted
LED backlight unit described in asking 1；Wherein, first data line, the back of LED described in each column is arranged in LED backlight unit described in every row
A scan line is arranged in light unit；
The scanning signal input terminal of the LED backlight unit is connected with the corresponding scan line, and the of the LED backlight unit
One data signal input is connected with corresponding first data line, the power end of the LED backlight unit and the power supply
Line connection, the ground terminal of the LED backlight unit and the ground line connect, the first storage capacitance of the LED backlight unit
Incoming end is connected by corresponding first storage capacitance and the ground line.
9. LED backlight circuit as claimed in claim 8, which is characterized in that the LED backlight unit further include: the second LED core
Piece, third LED chip, third electronic switching tube, the 4th electronic switching tube, the 5th electronic switching tube, the 6th electronic switching tube,
Two storage capacitances and third storage capacitance；Wherein, LED backlight unit described in every row also sets up second data line and one
Third data line；
The control terminal of the third electronic switching tube, the control terminal of the 5th electronic switching tube and the LED backlight unit
The connection of scanning signal input terminal, second number of the current input terminal of the third electronic switching tube as the LED backlight unit
It is connected according to signal input part with corresponding second data line, described in the current input terminal conduct of the 5th electronic switching tube
The third data signal input of LED backlight unit is connected with the corresponding third data line, the third electronic switching tube
Current output terminal and the control terminal of the 4th electronic switching tube connect the second storage capacitance as the LED backlight unit altogether
Incoming end, and connect by corresponding second storage capacitance with the ground terminal of the LED backlight unit, the 5th electronic switch
The control terminal of the current output terminal of pipe and the 6th electronic switching tube connects the third storage electricity as the LED backlight unit altogether
Hold incoming end, and is connect by corresponding third storage capacitance with the ground terminal of the LED backlight unit, the 4th electronic cutting
The ground terminal for closing the current output terminal of pipe, the current output terminal of the 6th electronic switching tube and the LED backlight unit is total
It connects, the current input terminal of the 4th electronic switching tube is connect with the cathode of second LED chip, the 6th electronic switch
The current input terminal of pipe is connect with the cathode of the third LED chip, positive, the described third LED core of second LED chip
The power end of the positive and described LED backlight unit of piece connects altogether.
10. a kind of display device characterized by comprising
Display panel, the display panel include multiple LED backlight units as described in Claims 1-4 any one；And
Control unit, described control unit and the display panel are electrically connected, wherein described control unit is described for driving
Display panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821636454.8U CN209045138U (en) | 2018-10-08 | 2018-10-08 | LED backlight unit, component, circuit and the display device of discrete component driving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821636454.8U CN209045138U (en) | 2018-10-08 | 2018-10-08 | LED backlight unit, component, circuit and the display device of discrete component driving |
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| Publication Number | Publication Date |
|---|---|
| CN209045138U true CN209045138U (en) | 2019-06-28 |
Family
ID=67035332
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821636454.8U Active CN209045138U (en) | 2018-10-08 | 2018-10-08 | LED backlight unit, component, circuit and the display device of discrete component driving |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111445867A (en) * | 2020-04-22 | 2020-07-24 | Tcl华星光电技术有限公司 | Backlight partition driving module, backlight device and display device |
| CN111833822A (en) * | 2020-04-17 | 2020-10-27 | 北京奕斯伟计算技术有限公司 | Backlight source, backlight module, backlight driving method and display device |
-
2018
- 2018-10-08 CN CN201821636454.8U patent/CN209045138U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111833822A (en) * | 2020-04-17 | 2020-10-27 | 北京奕斯伟计算技术有限公司 | Backlight source, backlight module, backlight driving method and display device |
| WO2021209071A1 (en) * | 2020-04-17 | 2021-10-21 | 北京奕斯伟计算技术有限公司 | Backlight source, backlight module, backlight driving method, and display device |
| CN111833822B (en) * | 2020-04-17 | 2021-10-22 | 北京奕斯伟计算技术有限公司 | Backlight source, backlight module, backlight driving method and display device |
| CN111445867A (en) * | 2020-04-22 | 2020-07-24 | Tcl华星光电技术有限公司 | Backlight partition driving module, backlight device and display device |
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