CN101661193B - Backlight module of liquid crystal display - Google Patents
Backlight module of liquid crystal display Download PDFInfo
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- CN101661193B CN101661193B CN2009101738360A CN200910173836A CN101661193B CN 101661193 B CN101661193 B CN 101661193B CN 2009101738360 A CN2009101738360 A CN 2009101738360A CN 200910173836 A CN200910173836 A CN 200910173836A CN 101661193 B CN101661193 B CN 101661193B
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Abstract
The invention discloses a backlight module of a liquid crystal display (LED) and the backlight module comprises a circuit board, a LED drive element and a plurality of LED light bar sections. Each LED light bar section comprises a plurality of LED universal serial buses. The LED drive element is electrically connected with the circuit board line and further electrically connected with the LED universal serial buses of the LED light bar sections through the circuit board line.
Description
Technical field
The present invention relates to a kind of backlight module, relate in particular to a kind of backlight liquid crystal display module.
Background technology
Light emitting diode has characteristics such as energy saving, luminescence efficiency height, be new illumination component from generation to generation, and be widely used on the light source of display device, right for the light source of display device, because the brightness of single light emitting diode is still less than traditional fluorescent tube, therefore, need the light emitting diode of set sufficient amount, the beginning can use as the illumination of display device.Therefore, dealer's set of being arranged with many LED elements on a plate body is called LED lamp bar (LED light bar).These LED elements are one another in series on LED lamp bar, and accept the control of single LED driving element.
Yet LED driving element and LED lamp bar thereof have following disappearance and inconvenience:
1. single LED lamp bar tool is high to be made or alternative costs:
If wherein a LED element is damaged, therefore the brightness of LED lamp bar just produce flaw, when serious, may scrap this LED lamp bar.So therefore the manufacturing of LED lamp bar or alternative costs just improve many.
2. the complicated output/input circuit cabling of single LED lamp bar tool:
The LED driving element can change in response to the difference of LED element arrangements combination to some extent in order to the output/input circuit cabling that connects each LED element, therefore, cause its output/input circuit cabling comparatively complicated, and then improve the situation generation of its output/input circuit cabling of wrong.
3. different luminance differences of different LED driving element:
Because the electric current precision (current accuracy) of different LED driving element has 3% difference, make that the brightness value of the LED element of controlling is also therefore different, so, just may produce tangible luminance difference on the LED lamp bar, and then cause the user to produce obvious drop in visually.
4. single LED driving element fault, promptly uncontrollable whole LED lamp bar makes the LED element of whole LED lamp bar extinguish.
So, how developing a kind of backlight liquid crystal display module, can effectively improve above-mentioned disappearance of bringing and inconvenience, is a relevant dealer instant important topic at present in fact.
Summary of the invention
The present invention's one purpose is to disclose a kind of backlight liquid crystal display module, not only reduce LED lamp bar LED component wear wherein, promptly may scrap the risk of whole LED lamp bar, and then the manufacturing or the alternative costs of reduction LED lamp bar, and the output/input circuit cabling of simplification LED driving element complexity, and then the chance of reduction wrong output/input circuit cabling.Moreover the present invention avoids single LED driving element fault, and makes the shortcoming that the LED element of whole LED lamp bar extinguishes.
The present invention discloses a kind of backlight liquid crystal display module on the other hand, solves the electric current precision of different LED driving element tool difference, and then the luminance difference on the homogenising LED lamp bar, and then satisfies the user in visual demand.
One embodiment of the invention, liquid crystal display utensil one backlight module, backlight module comprise a circuit board, a plurality of LED lamp bar portion and one the one LED driving element.LED lamp bar portion comprises a plurality of LED serials respectively.The one LED driving element electrically connects circuit board, electrically connects these a little LED serials of this a little LED lamp bar portion simultaneously respectively via circuit board.
In the another embodiment of the present invention, liquid crystal display utensil one backlight module, the backlight liquid crystal display module comprises a circuit board, a plurality of LED lamp bar portion and a plurality of LED driving element.LED lamp bar portion electrically connects the circuit of circuit board respectively, each LED lamp bar portion comprises a plurality of LED serials respectively, wherein, each LED serial is made up of the LED lamp spare of a plurality of mutual series connection, the a little LED lamp spares of this of these a little LED serials are lined up single straight line, and alternately are arranged in separately from each other in each LED lamp bar portion.The LED driving element electrically connects the circuit of circuit board respectively, and each LED driving element comprises an anodal pin and the set of a plurality of negative pole pin, and each negative pole pin set comprises a plurality of negative pole pins.And each LED driving element electrically connects these a little LED serials of each LED lamp bar portion respectively respectively one to one by the negative pole pin of the set of a negative pole pin wherein, and these a little LED serials by each LED lamp bar portion of anodal pin one-to-many ground electric connection.
In the another embodiment of the present invention, liquid crystal display utensil one backlight module, the backlight liquid crystal display module comprises a circuit board, a plurality of LED lamp bar portion, one the one LED driving element and one the 2nd LED driving element.Each LED lamp bar portion comprises a plurality of LED serials and a plurality of the 2nd LED serial respectively.The one LED driving element comprises a plurality of first negative pole pins and one first anodal pin.The one LED driving element electrically connects the circuit of circuit board, electrically connects these a little LED serials of this a little LED lamp bar portion simultaneously via the circuit of circuit board.The 2nd LED driving element comprises a plurality of second negative pole pins and the second anodal pin.The 2nd LED driving element electrically connects the circuit of circuit board, electrically connects these a few the 2nd LED serials of this a little LED lamp bar portion simultaneously via circuit board.
And, wherein one the one LED serial comprises a LED lamp spare of a plurality of mutual series connection, each LED lamp spare of connecting mutually comprises a plurality of the first LED lamp spares and position, a plurality of end the one LED lamp spare respectively, these a little the first LED lamp spares all electrically connect this first anodal pin, and this position, a little end the one LED lamp spare electrically connects this a little first negative pole pins accordingly.
And, wherein one the 2nd LED serial comprises the 2nd LED lamp spare of a plurality of mutual series connection, each the 2nd LED lamp spare of connecting mutually comprises a plurality of the first LED lamp spares and position, a plurality of end the one LED lamp spare respectively, these a little the first the 2nd LED lamp spares all electrically connect this second anodal pin, and this position, a little end the 2nd LED lamp spare electrically connects this a little second negative pole pins accordingly.
In the another embodiment of the present invention, liquid crystal display utensil one backlight module, backlight liquid crystal display module comprise a circuit board, a LED lamp bar portion, the 2nd LED lamp bar portion, the 3rd LED lamp bar portion, a LED driving element, the 2nd LED driving element and the 3rd LED driving element.The one LED driving element electrically connects circuit board, comprises one first negative pole pin, one second negative pole pin, one the 3rd negative pole pin and one first anodal pin.The 2nd LED driving element electrically connects circuit board, comprises one the 4th negative pole pin, one the 5th negative pole pin, one the 6th negative pole pin and one second anodal pin.The 3rd LED driving element electrically connects circuit board, comprises one the 7th negative pole pin, one the 8th negative pole pin, one the 9th negative pole pin and one the 3rd anodal pin.The one LED lamp bar portion comprises one the one LED serial, one the 2nd LED serial and one the 3rd LED serial, the one LED serial electrically connects the first negative pole pin and the first anodal pin respectively through the circuit of circuit board, the 2nd LED serial electrically connects the 4th negative pole pin and the second anodal pin respectively through the circuit of circuit board, and the 3rd LED serial electrically connects the 7th negative pole pin and the 3rd anodal pin respectively through the circuit of circuit board.The 2nd LED lamp bar portion comprises one the 4th LED serial, one the 5th LED serial and one the 6th LED serial, the 4th LED serial electrically connects the second negative pole pin and the first anodal pin respectively through the circuit of circuit board, the 5th LED serial electrically connects the 5th negative pole pin and the second anodal pin respectively through the circuit of circuit board, and the 6th LED serial electrically connects the 8th negative pole pin and the 3rd anodal pin respectively through the circuit of circuit board.The 3rd LED lamp bar portion comprises one the 7th LED serial, one the 8th LED serial and one the 9th LED serial, the 7th LED serial electrically connects the 3rd negative pole pin and the first anodal pin respectively through the circuit of circuit board, the 8th LED serial electrically connects the 6th negative pole pin and the second anodal pin respectively through the circuit of circuit board, and the 9th LED serial electrically connects the 9th negative pole pin and the 3rd anodal pin respectively through the circuit of circuit board.
In sum, the present invention reduced LED lamp bar manufacturing or alternative costs, reduced the chance of wrong output/input circuit cabling, in single LED driving element fault, still can light the part LED element of LED lamp bar, and the luminance difference on the even LED lamp bar, and then satisfy the user in visual demand.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Figure 1A illustrates the position configuration synoptic diagram of backlight liquid crystal display module of the present invention in an embodiment;
Figure 1B illustrates the circuit diagram of Figure 1A;
Fig. 2 A illustrates the position configuration synoptic diagram of backlight liquid crystal display module of the present invention in another embodiment;
Fig. 2 B illustrates the circuit diagram of Fig. 2 A;
Fig. 3 illustrates the position configuration synoptic diagram of backlight liquid crystal display module of the present invention in another embodiment and the definition of pin position synoptic diagram of LED driving element;
Fig. 4 A illustrates the left half of position configuration synoptic diagram of Fig. 3;
Position configuration synoptic diagram between Fig. 4 B illustrates among Fig. 3;
Fig. 4 C illustrates the right half of position configuration synoptic diagram of Fig. 3;
Fig. 5 illustrates and shows the circuit diagram of backlight liquid crystal display module of the present invention in another embodiment.
Wherein, Reference numeral:
100,200,300,400: backlight module
120,220,320,420: circuit board
250,250 ', 350,350 ', 350 ": connector
270,270 ', 370,370 ', 370 ": flexible circuit board
B1, B2, B3～BQ:LED lamp bar portion
D1, D2, D3～DP:LED driving element
S1B1D1-～SNB1D1-, S1B2D1-～SNBQD1-, S1B1D2-～SNBQD2-, S1B1D2-～S2B2D2-, S1B1DP-～SNBQDP-: negative pole pin
D1+, D2+, D3+～DP+: anodal pin
D1B1S1～D1B1SN, D1B2S1～D1BQSN, D2B1S2～D2B1SN, DPB1S1～DPBQSN:LED serial
D1B1SL1～DPBQSNLM:LED element
DpBqSnL1: the first LED element
DpBqSnLM: position, end LED element
Embodiment
Below will and describe in detail and clearly demonstrate spirit of the present invention with diagram, as those skilled in the art after understanding embodiments of the invention, when can be by the technology of teachings of the present invention, change and modification, it does not break away from spirit of the present invention and scope.
The present invention discloses a kind of backlight liquid crystal display module, and backlight module comprises a circuit board, a plurality of LED lamp bar portion and at least two LED driving elements.Each LED lamp bar portion has a plurality of LED serials respectively.Each LED serial is connected in series by a plurality of LED elements.The LED driving element electrically connects the circuit of circuit board, and single LED driving element electrically connects at least one LED serial of this a little LED lamp bar portion respectively via the different outlet lines of circuit board, in order to flickering of the LED element of controlling these a little LED serials.
And the LED serial is made up of the LED lamp spare of a plurality of mutual series connection, and these LED lamp spares are lined up single straight line, and the LED lamp spare of at least two LED serials alternately is arranged in the LED lamp bar portion each other.
Below will disclose several embodiment further to illustrate the technical characterictic of this case, and for making LED driving element, LED lamp bar portion, LED serial and LED element clearer, below will be numbered LED driving element, LED lamp bar portion, LED serial and LED element, wherein the code name of LED driving element (LED Driver) is Dp, p is positive integer, for example D1.The code name of LED lamp bar portion (LED Light Bar) is Bq, and q is positive integer, for example B1.The code name of LED serial (LED Series) is DpBqSn, and p, q, n are positive integer, for example D1B1S1.The code name of LED element (LED element) is DpBqSnLm, and p, q, n, m are positive integer, for example D1B1S1L1.
Shown in Figure 1A and Figure 1B, Figure 1A illustrates the position configuration synoptic diagram of backlight liquid crystal display module of the present invention in an embodiment.Figure 1B illustrates the circuit diagram of Figure 1A.In this backlight liquid crystal display module 100, the quantity of LED driving element is that 2, the quantity of LED lamp bar portion are that the quantity that 2, single LED lamp bar portion have 2 LED serials, a single LED driving element may command LED serial is 2, and the LED number of elements of single LED serial is 2.
Backlight liquid crystal display module 100 has one the one LED lamp bar B1 of portion (LED Light bar), the 2nd LED lamp bar B2 of portion (LED Light bar), a LED driving element D1 (LED driver) and the 2nd LED driving element D2.The one LED driving element D1 (LED driver) and the 2nd LED driving element D2 lay respectively on the circuit board 120, and electrically connect the circuit of circuit board 120.
The one LED lamp bar B1 of portion has one the one LED serial D 1B1S1 and the 2nd LED serial D 2B1S1 respectively.The 2nd LED lamp bar B2 of portion has one the one LED serial D 1B2S1 and the 2nd LED serial D 2B2S1 respectively.Each LED serial is connected in series by a plurality of LED elements.For example the LED serial D 1B1S1 of a LED lamp bar B1 of portion is connected in series (representing as the site grid) by a LED element D1B1S1L1 and the 2nd LED element D1B1S1L2, and the 2nd LED serial D 2B1S1 is connected in series (representing as blank grid) by a LED element D2B1S1L1 and the 2nd LED element D2B1S1L2.
The LED serial D 1B2S1 of the 2nd LED lamp bar B2 of portion is connected in series (representing as the site grid) by a LED element D1B2S1L1 and the 2nd LED element D1B2S1L2, and the 2nd LED serial D 2B2S1 is connected in series (representing as blank grid) by a LED element D2B2S1L1 and the 2nd LED element D2B2S1L2.
The one LED driving element D1 comprises a plurality of first negative pole pin S1B1D1-, S1B2D1-and one first anodal pin D1+.The 2nd LED driving element D2 comprises a plurality of second negative pole pin S1B1D2-, S1B2D2-and one second anodal pin D2+.
The LED serial D 1B1S1 of the one LED lamp bar B1 of portion electrically connects the first negative pole pin S1B1D1-and the first anodal pin D1+ of a LED driving element D1 through the circuit of circuit board 120.Specifically, the first LED element of a LED serial D 1B1S1 (i.e. a LED element D1B1S1L1) electrically connects with the first anodal pin D1+ of a LED driving element D1; The end position LED element (i.e. the 2nd LED element D1B1S1L2) of the one LED serial D 1B1S1 electrically connects with the first negative pole pin S1B1D1-of a LED driving element D1.
The LED serial D 1B2S1 of the 2nd LED lamp bar B2 of portion electrically connects the second negative pole pin S1B2D1-and the first anodal pin D1+ of a LED driving element D1 through the circuit of circuit board 120.Specifically, the first LED element of a LED serial D 1B2S1 (i.e. a LED element D1B2S1L1) electrically connects with the first anodal pin D1+ of a LED driving element D1; The end position LED element (i.e. the 2nd LED element D1B2S1L2) of the one LED serial D 1B2S1 electrically connects with the second negative pole pin S1B2D1-of a LED driving element D1.
In the same manner, see the 2nd LED driving element D2 of Figure 1B, the 2nd LED driving element D2 also electrically connects the 2nd LED serial D 2B1S1 of a LED lamp bar B1 of portion and the 2nd LED serial D 2B2S1 of the 2nd LED lamp bar B2 of portion by the pin of correspondence respectively.Specifically, the first LED element of the 2nd LED serial D 2B1S1 (i.e. a LED element D2B1S1L1) electrically connects with the second anodal pin D2+, its end position LED element (i.e. the 2nd LED element D2B1S1L2) respectively with the first negative pole pin S1B1D2-electric connection of the 2nd LED driving element D2.The first LED element (being D2B2S1L1) of the 2nd LED serial D 2B2S1 electrically connects with the second anodal pin D2+, and its end position LED element (i.e. the 2nd LED element D2B2S1L2) electrically connects with the second negative pole pin S1B2D2-of the 2nd LED driving element D2.
So, when a LED lamp bar portion fault wherein, need not change all LED lamp bar portions, and then the manufacturing or the alternative costs of reduction LED lamp bar portion, and many more LED lamp bar portions can simplify the output/input circuit cabling of LED driving element complexity, and then reduce the chance of wrong output/input circuit cabling.
In addition, each LED driving element is all different LED serials of a part of single LED lamp bar portion of control each other, and when making single LED driving element fault, all the other LED elements of LED lamp bar portion still can maintaining lights.When the quantity of LED driving element is many more, the LED element that can maintaining lights in the LED lamp bar portion is many more.
In addition, see shown in Figure 1A, be arranged in single straight line on the LED serial D 1B1S1 of the one LED lamp bar B1 of portion and the flexible circuit board of the 2nd LED serial D 2B1S1 respectively at a LED lamp bar B1 of portion, and the LED element D2B1S1L1 of the LED element D1B1S1L1 of a LED serial D 1B1S1 and the 2nd LED element D1B1S1L2 and the 2nd LED serial D 2B1S1 and the 2nd LED element D2B1S1L2 alternately arrangement separately from each other.In other words, be to be arranged in single straight line: a LED element D1B1S1L1, a LED element D2B1S1L1, the 2nd LED element D1B1S1L2 and the 2nd LED element D2B1S1L2 according to following order.
The LED serial D 1B2S1 of the 2nd LED lamp bar B2 of portion and the 2nd LED serial D 2B21S1 also line up single straight line in the above described manner, and its LED element alternately is arranged on the flexible circuit board of the 2nd LED lamp bar B2 of portion separately from each other, that is a LED element D1B2S1L1, a LED element D2B2S1L1, the 2nd LED element D1B2S1L2 and the 2nd LED element D2B2S1L2.So, by the luminance difference on the homogenising LED lamp bar, also can satisfy the user in visual demand.
Shown in Fig. 2 A and Fig. 2 B, Fig. 2 A illustrates the position configuration synoptic diagram of backlight liquid crystal display module of the present invention in another embodiment.Fig. 2 B illustrates the circuit diagram of Fig. 2 A.
In this backlight liquid crystal display module 200, the quantity of the LED lamp bar Bq of portion is consistent with the quantity of LED driving element Dp, and the quantity of each LED lamp bar Bq of portion is even number, and for example among this embodiment, the quantity of LED driving element Dp is that 2, the quantity of the LED lamp bar Bq of portion are 2.The quantity of the LED serial D pBqSn that each LED driving element Dp is electrically connected in the same LED lamp bar Bq of portion is mutually the same, and for example among this embodiment, the quantity of single LED driving element Dp may command LED serial D pBqSn is 8.LED lamp spare DpBqSnLm quantity among each LED serial D pBqSn is mutually the same, and for example among this embodiment, the quantity of the LED element DpBqSnLm of single LED serial D pBqSn is 10.
Backlight liquid crystal display module 200 has one the one LED lamp bar B1 of portion, the 2nd LED lamp bar B2 of portion, a LED driving element D1 and the 2nd LED driving element D2.The one LED driving element D1 and the 2nd LED driving element D2 lay respectively on the circuit board 220, and electrically connect the circuit (seeing shown in Fig. 2 A) of circuit board 220.
See shown in Fig. 2 B that a LED driving element D1 can go up 4 LED serial D 1B1S1～D1B1S4 of control in a LED lamp bar B1 of portion, the 2nd LED driving element D2 can go up 4 LED serial D 1B2S1～D1B2S4 of control in a LED lamp bar B1 of portion.Each LED serial D pBqSn is connected in series by a plurality of LED element DpBqSnLm.For example LED serial D 1B1S1 is connected in series by 10 LED elements (D1B1S1L1～D1B1S1L10 represents as the site grid).
The one LED driving element D1 comprises the set of one first anodal pin D1+ and a plurality of negative pole pin, and each negative pole pin set has a plurality of in order to the first negative pole pin that electrically connects the different LED lamp bar Bq of portion (for example 4 negative pole pin S1B1D1-～S4B1D1-electrically connect a LED lamp bar B1 of portion, 4 negative pole pin S1B2D1-～S4B2D1-electrically connect the 2nd LED lamp bar B2 of portion).The 2nd LED driving element D2 comprises the set of one second anodal pin D2+ and a plurality of negative pole pin, and each negative pole pin set has a plurality of in order to the second negative pole pin that electrically connects the different LED lamp bar Bq of portion (for example 4 negative pole pin S1B1D2-～S4B1D2-electrically connect a LED lamp bar B1 of portion, 4 negative pole pin S1B2D2-～S4B2D2-electrically connect the 2nd LED lamp bar B2 of portion).
See shown in Fig. 2 A and Fig. 2 B, the one LED driving element D1 is respectively by corresponding the negative pole pin S1B1D1-～S4B1D1-and the first anodal pin D1+, via the output/input circuit cabling of circuit board 220, connector 250 and flexible circuit board 270, and electrically connect LED serial D 1B1S1～D1B1S4 on the LED lamp bar B1 of portion respectively.The one LED driving element D1 is respectively by corresponding the negative pole pin S1B2D1-～S4B2D1-and the first anodal pin D1+, via the output/input circuit cabling of circuit board 220, connector 250 ' and flexible circuit board 270 ', and electrically connect LED serial D 1B2S1～D1B2S4 on the 2nd LED lamp bar B2 of portion respectively.
The 2nd LED driving element D2 is also via the output/input circuit cabling of circuit board 220, connector 250 and flexible circuit board 270, and, electrically connect the LED serial D 2B1S1～D2B1S4 on the LED lamp bar B1 of portion respectively by corresponding the negative pole pin S1B1D2-～S4B1D2-and the second anodal pin D2+.The 2nd LED driving element D2 is via the output/input circuit cabling of circuit board 220, connector 250 ' and flexible circuit board 270 ', and, electrically connect the LED serial D 2B2S1～D2B2S4 on the 2nd LED lamp bar B2 of portion respectively by corresponding the negative pole pin S1B2D2-～S4B2D2-and the second anodal pin D2+.
Specifically, among the above-mentioned LED serial D pBqSn, its first LED element DpBqSnL1 electrically connects with the anodal pin of corresponding LED driving element, and its position, end LED element DpBqSnLm electrically connects with the corresponding negative pole pin of corresponding LED driving element.
For instance, the first anodal pin D1+ of the first LED element D1B1S1L1 of LED serial D 1B1S1 and a LED driving element D1 electrically connects, and the first negative pole pin S1B1D1-of an end position LED element D1B1S1L10 and a LED driving element D1 electrically connects.
Perhaps, the second anodal pin D2+ of the first LED element D2B1S1L1 of LED serial D 2B1S1 and the 2nd LED driving element D2 electrically connects, and the second negative pole pin S1B1D2-of end position LED element D2B1S1L10 and the 2nd LED driving element D2 electrically connects.
So, just can the rest may be inferred according to above-mentioned example, can learn the corresponding negative pole pin that electrically connects with each LED serial.
See also Fig. 2 A, in the present embodiment, LED element on the one LED lamp bar B1 of portion, be the order with D1B1S1L1, D2B1S1L1, D1B1S1L2, D2B1S1L2～D1B1S1L10, D2B1S1L10, D1B1S2L1, D2B1S2L1, D1B1S2L2, D2B1S2L2～D1B1S2L10, D2B1S2L10～D1B1S4L1, D2B1S4L1, D1B1S4L2, D2B1S4L2～D1B1S4L10, D2B1S4L10, alternately arrangement forms.In like manner, LED element on the 2nd LED lamp bar B2 of portion, then with the order of D1B2S1L1, D2B2S1L1, D1B2S1L2, D2B2S1L2～D1B2S1L10, D2B2S1L10, D1B2S2L1, D2B2S2L1, D1B2S2L2, D2B2S2L2～D1B2S2L10, D2B2S2L10～D1B2S4L1, D2B2S4L1, D1B2S4L2, D2B2S4L2～D1B2S4L10, D2B2S4L10, alternately arrangement forms.
From the above, each LED driving element Dp is mutually the same in order to the quantity of the negative pole pin that electrically connects the different LED lamp bar Bq of portion.Above-mentioned LED element is the element of symbolic animal of the birth year same specification haply, can not change because of its difference of representing grid.
Referring to shown in Figure 3, Fig. 3 illustrates the position configuration synoptic diagram of backlight liquid crystal display module of the present invention in another embodiment and the definition of pin position synoptic diagram of LED driving element.In this backlight liquid crystal display module 300, the quantity of LED lamp bar portion is consistent with the quantity of LED driving element, and the quantity of each LED lamp bar portion is the radix greater than, and for example among this embodiment, the quantity of LED driving element is that 3, the quantity of LED lamp bar portion are 3.
The quantity of the LED serial D pBqSn that each LED driving element Dp is electrically connected in the same LED lamp bar Bq of portion is differing from each other, and for example among this embodiment, the quantity of single LED driving element Dp may command LED serial D pBqSn is 2 to 3 and does not wait.LED lamp spare DpBqSnLm quantity among each LED serial D pBqSn is differing from each other, and for example among this embodiment, the LED number of elements of single LED serial is 6 to 7 and does not wait.
Backlight liquid crystal display module 300 has one the one LED lamp bar B1 of portion, the 2nd LED lamp bar B2 of portion, the 3rd LED lamp bar B3 of portion, a LED driving element D1, the 2nd LED driving element D2 and the 3rd LED driving element D3.The one LED driving element D1, the 2nd LED driving element D2 and the 3rd LED driving element D3 lay respectively on the circuit board 320, and electrically connect the circuit of circuit board 320.
Shown in Fig. 4 A, Fig. 4 B and Fig. 4 C, Fig. 4 A illustrates the left half of position configuration synoptic diagram of Fig. 3.Fig. 4 B illustrates the centre position configuration schematic diagram of Fig. 3.Fig. 4 C illustrates the right half of position configuration synoptic diagram of Fig. 3.With reference to figure 4A, Fig. 4 B and Fig. 4 C the time, can Fig. 3 conduct assist.
But a LED driving element D1 one-to-many ground respectively at a LED lamp bar B1 of portion go up three the one LED serials of control (for example LED serial D 1B1S1～D1B1S3), go up two the 4th LED serials of control (LED serial D 1B2S1～D1B2S2) for example, and go up three the 7th LED serials of control (LED serial D 1B3S1～D1B3S3) for example in the 2nd LED lamp bar B2 of portion in the 3rd LED lamp bar B3 of portion.
But the 2nd LED driving element D2 one-to-many ground respectively at a LED lamp bar B1 of portion go up three the 2nd LED serials of control (for example LED serial D 2B1S1～D2B1S3), go up two the 5th LED serials of control (LED serial D 2B2S1～D2B2S2) for example, and go up three the 8th LED serials of control (LED serial D 2B3S1～D2B3S3) for example in the 2nd LED lamp bar B2 of portion in the 3rd LED lamp bar B3 of portion.
But the 3rd LED driving element D3 one-to-many ground respectively at a LED lamp bar B1 of portion go up three the 3rd LED serials of control (for example LED serial D 3B1S1～D3B1S3), go up two the 6th LED serials of control (LED serial D 3B2S1～D3B2S2 for example, and go up three the 9th LED serials of control (LED serial D 3B3S1～D3B3S3) for example in the 2nd LED lamp bar B2 of portion in the 3rd LED lamp bar B3 of portion.
Wherein the LED number of elements M of each LED serial is also unequal.For example, the LED serial of Fig. 4 A, for example LED serial D 1B1S1 has 7 LED element (D1B1S1L1～D1B1S1L7, represent as the site grid), and the 2nd LED serial, for example LED serial D 2B1S1 has 6 LED elements (D2B1S1L1～D2B1S1L6 represents as blank grid).And the 3rd LED serial, for example LED serial D 3B1S1 has 7 LED elements (D3B1S1L1～D3B1S1L7 represents as the horizontal line grid).
The one LED driving element D1 comprises one first anodal pin D1+ and three negative pole pin set, the set of three negative pole pins has in regular turn that (for example (for example negative pole pin S1B2D1-～S2B2D1-) is in order to electrically connecting the 2nd LED lamp bar B2 of portion, and a plurality of the 3rd negative pole pin (negative pole pin S1B3D1-～S3B3D1-) in order to electrically connect the 3rd LED lamp bar B3 of portion for example in order to electrically connect a LED lamp bar B1 of portion, a plurality of second negative pole pin for negative pole pin S1B1D1-～S3B1D1-) in order to a plurality of first negative pole pins that electrically connect different LED lamp bar portion.
The 2nd LED driving element D2 comprises one second anodal pin D2+ and three negative pole pin set, the set of three negative pole pins has in regular turn that (for example (for example negative pole pin S1B2D2-～S2B2D2-) is in order to electrically connecting the 2nd LED lamp bar B2 of portion, and a plurality of the 6th negative pole pin (negative pole pin S1B3D2-～S3B3D2-) in order to electrically connect the 3rd LED lamp bar B3 of portion for example in order to electrically connect a LED lamp bar B1 of portion, a plurality of the 5th negative pole pin for negative pole pin S1B1D2-～S3B1D2-) in order to a plurality of the 4th negative pole pins that electrically connect different LED lamp bar portion.
The 3rd LED driving element D3 comprises one the 3rd anodal pin D3+ and three negative pole pin set, the set of three negative pole pins has in regular turn that (for example (for example negative pole pin S1B2D3-～S2B2D3-) is in order to electrically connecting the 2nd LED lamp bar B2 of portion, and a plurality of the 9th negative pole pin (negative pole pin S1B3D3-～S3B3D3-) in order to electrically connect the 3rd LED lamp bar B3 of portion for example in order to electrically connect a LED lamp bar B1 of portion, a plurality of the 8th negative pole pin for negative pole pin S1B1D3-～S3B1D3-) in order to a plurality of the 7th negative pole pins that electrically connect different LED lamp bar portion.
From the above, among this embodiment, each LED driving element is differing from each other in order to the quantity of the negative pole pin that electrically connects different LED lamp bar portions.
Shown in Fig. 4 A to Fig. 4 C, with reference to figure 4A to Fig. 4 C the time, can Fig. 3 conduct assist, the LED serial of a LED lamp bar B1 of portion (for example LED serial D 1B1S1) electrically connects the first negative pole pin (for example negative pole pin S1B1D1-) and the first anodal pin D1+ respectively via the circuit of output/input circuit cabling, connector 350 and the circuit board 320 of flexible circuit board 370.
The 2nd LED serial (for example LED serial D 2B1S1) on the one LED lamp bar B1 of portion electrically connects the 4th negative pole pin (for example negative pole pin S1B1D2-) and the second anodal pin D2+ respectively via the circuit of output/input circuit cabling, connector 350 and the circuit board 320 of flexible circuit board 370.
The 3rd LED serial (for example LED serial D 3B1S2) on the one LED lamp bar B1 of portion electrically connects the 7th negative pole pin (for example negative pole pin S1B1D3-) and the 3rd anodal pin D3+ respectively via the circuit of output/input circuit cabling, connector 350 and the circuit board 320 of flexible circuit board 370.
The 4th LED serial of the 2nd LED lamp bar B2 of portion (for example LED serial D 1B2S1) electrically connects second negative pole pin (for example negative pole pin S1B2D1-) and the first anodal pin (for example anodal pin D1+) respectively via the circuit of output/input circuit cabling, connector 350 ' and the circuit board 320 of flexible circuit board 370 '.
The 5th LED serial (for example LED serial D 2B2S1) on the 2nd LED lamp bar B2 of portion electrically connects the 5th negative pole pin (for example negative pole pin S1B2D2-) and the second anodal pin D2+ respectively via the circuit of output/input circuit cabling, connector 350 ' and the circuit board 320 of flexible circuit board 370 '.
The 6th LED serial (for example LED serial D 3B2S1) on the 2nd LED lamp bar B2 of portion electrically connects the 8th negative pole pin (for example negative pole pin S1B2D3-) and the 3rd anodal pin D3+ respectively via the circuit of output/input circuit cabling, connector 350 ' and the circuit board 320 of flexible circuit board 370 '.
The 7th LED serial of the 3rd LED lamp bar B3 of portion (for example LED serial D 1B3S1) is via flexible circuit board 370 " output/input circuit cabling, connector 350 " and the circuit of circuit board 320 electrically connect the 3rd negative pole pin (for example negative pole pin S1B3D1-) and the first anodal pin D1+ respectively.
The 8th LED serial (for example LED serial D 2B3S1) on the 3rd LED lamp bar B3 of portion is via flexible circuit board 370 " output/input circuit cabling, connector 350 " and the circuit of circuit board 320 electrically connect the 6th negative pole pin (for example negative pole pin S1B3D2-) and the second anodal pin D2+ respectively.
The 9th LED serial (for example LED serial D 3B3S1) on the 3rd LED lamp bar B3 of portion is via flexible circuit board 370 " output/input circuit cabling, connector 350 " and the circuit of circuit board 320 electrically connect the 9th negative pole pin (for example negative pole pin S1B3D3-) and the 3rd anodal pin D3+ respectively.
See also Fig. 4 A, in the present embodiment, LED element on the one LED lamp bar B1 of portion, be with D1B1S1L1, D2B1S1L1, D3B1S1L1, D1B1S1L2, D2B1S1L2, D3B1S1L2～D1B1S1L6, D2B1S1L6, D3B1S1L6, D1B11S1L7, D3B1S1L7, D1B1S2L1, D2B1S2L1, D3B11S2L1, D1B1S2L2, D2B1S2L2, D3B11S2L2～D1B11S2L6, D2B11S2L6, D3B1S2L6, D1B1S2L7, D3B1S2L7, D1B11S3L1, D2B1S3L1, D3B1S3L1, D1B1S3L2, D2B1S3L2, D3B11S3L2～D11B11S3L6, D2B11S3L6, D3B1S3L6, D11B11S3L7, the order of D3B1S3L7, alternately arrangement forms.
See also Fig. 4 B, in the present embodiment, LED element on the 2nd LED lamp bar B2 of portion, be the order with D11B2S1L1, D2B2S1L1, D3B2S1L1, D1B2S1L2, D2B2S1L2, D3B2S11L2～D11B2S1L6, D2B2S1L6, D3B2S1L6, D1B2S1L7, D3B2S1L7, D11B2S2L1, D2B2S2L1, D3B2S2L1, D1B2S2L2, D2B2S2L2, D3B2S2L2～D1B2S2L6, D2B2S2L6, D3B2S2L6, D1B2S2L7, D3B2S2L7, alternately arrangement forms.
See also Fig. 4 C, in the present embodiment, LED element on the 3rd LED lamp bar B3 of portion, be with D1B3S1L1, D2B3S1L1, D3B3S1L1, D1B3S1L2, D2B3S1L2, D3B3S1L2～D1B3S1L6, D2B3S1L6, D3B3S1L6, D1B3S1L7, D3B3S1L7, D1B3S2L1, D2B3S2L1, D3B3S2L1, D1B3S2L2, D2B3S2L2, D3B3S2L2～D1B3S2L6, D2B3S2L6, D3B3S2L6, D1B3S2L7, D3B3S2L7, D1B3S3L1, D2B3S3L1, D3B3S3L1, D1B3S3L2, D2B3S3L2, D3B3S3L2～D1B3S3L6, D2B3S3L6, D3B3S3L6, D1B3S3L7, the order of D3B3S3L7, alternately arrangement forms.
Above-mentioned LED element is the element of symbolic animal of the birth year same specification haply, can not change because of its difference of representing grid.
At last, see shown in Figure 5.Fig. 5 illustrates and shows the circuit diagram of backlight liquid crystal display module of the present invention in another embodiment.Via the quantity of the quantity of above-mentioned LED lamp bar portion and LED driving element is in even number and the example greater than 1 odd number, can deduce out the LED lamp bar portion with greater number and the backlight liquid crystal display module 400 of LED driving element, wherein the quantity of LED driving element is P, P is positive integer, for example D1～DP.The quantity of LED lamp bar portion is Q, and Q is positive integer, for example B1～BQ.The LED serial quantity that arbitrary LED driving element connects arbitrary LED lamp bar BQ of portion is N, and N is positive integer, for example D1B1S1～DPBQSN.The quantity of LED element is M, and M is positive integer, for example DPBQSNLM.
Wherein P LED driving element D1～DP lays respectively on the circuit board 420, and electrically connects the circuit of circuit board 420, controls Q the LED lamp bar B1～BQ of portion respectively, and connects N the LED serial (D1B1S1～D1B1SN) for example of arbitrary LED lamp bar Bq of portion respectively.The LED serial has M LED element (D1B1S1L1～D1B1S1LM) for example respectively.Similarly, each LED driving element Dp has an anodal pin Dp+ and a plurality of negative pole pin S1B1D1-～SnBqDp-respectively.
So, the quantity of LED driving element and LED lamp bar portion is many more, when single LED driving element fault, the efficient of the too many LED lamp of the just unlikely influence of the LED element bar portion of therefore extinguishing in each LED lamp bar portion, add the staggered mode of LED element of above-mentioned different LED serial, make luminance difference on the homogenising LED lamp bar, so reduce widely influence the user to LED lamp bar portion in visual probability.
In sum, the present invention reduced LED lamp bar manufacturing or alternative costs, reduced the chance of wrong output/input circuit cabling, in single LED driving element fault, still can light the part LED element of LED lamp bar, and the luminance difference on the even LED lamp bar, and then satisfy the user in visual demand.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (19)
1. a backlight liquid crystal display module is characterized in that, comprising:
One circuit board has a plurality of circuits;
A plurality of LED lamp bar portion, each those LED lamp bar portion comprises a plurality of LED serials and a plurality of the 2nd LED serial respectively; Each those LED serial is made up of a plurality of mutual LED lamp spares of connecting respectively with the 2nd LED serial, those LED lamp spares of those LED serials and the 2nd LED serial are lined up single straight line, and alternately are arranged in separately from each other in each those LED lamp bar portion;
One the one LED driving element is positioned on this circuit board, electrically connects those LED serials of those LED lamp bar portions respectively via those circuits of this circuit board; And
One the 2nd LED driving element is positioned on this circuit board, electrically connects those the 2nd LED serials of those LED lamp bar portions via those circuits of this circuit board.
2. backlight liquid crystal display module according to claim 1 is characterized in that, a LED driving element comprises a plurality of first negative pole pins and one first anodal pin.
3. backlight liquid crystal display module according to claim 2, it is characterized in that, each those LED serial comprises a LED lamp spare of a plurality of mutual series connection, first place the one LED lamp spare of the LED lamp spare that those are in series electrically connects this first anodal pin, and its position, end the one LED lamp spare electrically connects this first negative pole pin.
4. backlight liquid crystal display module according to claim 1 is characterized in that, the 2nd LED driving element comprises a plurality of second negative pole pins and one second anodal pin.
5. backlight liquid crystal display module according to claim 4, it is characterized in that, each the 2nd LED serial comprises the 2nd LED lamp spare of a plurality of mutual series connection, first place the 2nd LED lamp spare of the 2nd LED lamp spare that those are in series electrically connects this second anodal pin, and its position, end the 2nd LED lamp spare electrically connects this second negative pole pin.
6. a backlight liquid crystal display module is characterized in that, comprising:
One circuit board has a plurality of circuits;
A plurality of LED lamp bar portion, electrically connect these a plurality of circuits of this circuit board, each those LED lamp bar portion comprises a plurality of LED serials, each those LED serial is made up of the LED lamp spare of a plurality of mutual series connection, those LED lamp spares of those LED serials are lined up single straight line, and alternately are arranged in separately from each other in each those LED lamp bar portion; And
A plurality of LED driving elements are positioned on this circuit board and electrically connect these a plurality of circuits of this circuit board, and each those LED driving element comprises an anodal pin and the set of a plurality of negative pole pin, and each those negative pole pins set comprises a plurality of negative pole pins respectively,
Those negative pole pins that each those LED driving element is gathered one of them by those negative pole pins respectively electrically connect those LED serials of each those LED lamp bar portion one to one, and those LED serials by these positive pole pin one-to-many ground each those LED lamp bar portions of electric connection.
7. backlight liquid crystal display module according to claim 6, it is characterized in that, the first LED lamp spare of the LED lamp spare that those of each those LED serial are connected mutually electrically connects this positive pole pin, the end position LED lamp spare of the LED lamp spare that those of each those LED serial are connected mutually electrically connect those negative pole pins one of them.
8. backlight liquid crystal display module according to claim 6 is characterized in that, each those LED lamp bar portion comprises a flexible circuit board, and those LED lamp spares of those LED serials are arranged on this flexible circuit board of each those LED lamp bar portion.
9. backlight liquid crystal display module according to claim 6 is characterized in that, the quantity of those LED lamp bar portions is consistent with the quantity of those LED driving elements.
10. backlight liquid crystal display module according to claim 9 is characterized in that, the quantity of those LED lamp bar portions is even number.
11. backlight liquid crystal display module according to claim 10 is characterized in that, the quantity of those negative pole pins of those negative pole pin set of each those LED driving element is mutually the same.
12. backlight liquid crystal display module according to claim 10 is characterized in that, the quantity of those LED lamp spares of each those LED serial is mutually the same.
13. backlight liquid crystal display module according to claim 10 is characterized in that, the quantity of those LED serials that each those LED driving element is electrically connected in same those LED lamp bar portions is mutually the same.
14. backlight liquid crystal display module according to claim 9 is characterized in that, the quantity of those LED lamp bar portions is the odd number more than 1.
15. backlight liquid crystal display module according to claim 14 is characterized in that, the quantity of those negative pole pins of those negative pole pin set of each those LED driving element is differing from each other.
16. backlight liquid crystal display module according to claim 14 is characterized in that, the quantity of those LED lamp spares of each those LED serial is differing from each other.
17. backlight liquid crystal display module according to claim 14 is characterized in that, the quantity of those LED serials that each those LED driving element is electrically connected in same those LED lamp bar portions is differing from each other.
18. a backlight liquid crystal display module is characterized in that, comprising:
One circuit board has a plurality of circuits;
A plurality of LED lamp bar portion, each those LED lamp bar portion comprises a plurality of LED serials and a plurality of the 2nd LED serial respectively;
One the one LED driving element comprises a plurality of first negative pole pins and one first anodal pin, electrically connects those circuits of this circuit board, and electrically connects those LED serials of those LED lamp bar portions via those circuits of this circuit board;
One the 2nd LED driving element comprises a plurality of second negative pole pins and one second anodal pin, electrically connects those circuits of this circuit board, and electrically connects those the 2nd LED serials of those LED lamp bar portions via those circuits of this circuit board,
Each those LED serial comprises a LED lamp spare of a plurality of mutual series connection, each those LED lamp spare of connecting mutually comprises a first place the one LED lamp spare and position, an end the one LED lamp spare respectively, those the first LED lamp spares electrically connect this first anodal pin, those position, end the one LED lamp spares electrically connect those first negative pole pins accordingly
Each those the 2nd LED serial comprises the 2nd LED lamp spare of a plurality of mutual series connection, each those the 2nd LED lamp spare of connecting mutually comprises a first place the one LED lamp spare and position, an end the one LED lamp spare respectively, those the first the 2nd LED lamp spares electrically connect this second anodal pin, and those position, end the 2nd LED lamp spares electrically connect those second negative pole pins accordingly; Wherein
Those LED lamp spares of connecting are mutually lined up single straight line with the 2nd LED lamp spare that those are connected mutually, and each those LED lamp spare alternately is arranged in each those LED lamp bar portion separately from each other with each those the 2nd LED lamp spare.
19. a backlight liquid crystal display module is characterized in that, comprising:
One circuit board has a plurality of circuits;
One the one LED driving element electrically connects those circuits of this circuit board, comprises one first negative pole pin, one second negative pole pin, one the 3rd negative pole pin and one first anodal pin;
One the 2nd LED driving element electrically connects those circuits of this circuit board, comprises one the 4th negative pole pin, one the 5th negative pole pin, one the 6th negative pole pin and one second anodal pin;
One the 3rd LED driving element electrically connects those circuits of this circuit board, comprises one the 7th negative pole pin, one the 8th negative pole pin, one the 9th negative pole pin and one the 3rd anodal pin;
One the one LED lamp bar portion, comprise one the one LED serial, one the 2nd LED serial and one the 3rd LED serial, the one LED serial electrically connects this first negative pole pin and this first anodal pin respectively through those circuits of this circuit board, the 2nd LED serial electrically connects the 4th negative pole pin and this second anodal pin respectively through those circuits of this circuit board, and the 3rd LED serial electrically connects the 7th negative pole pin and the 3rd anodal pin respectively through those circuits of this circuit board; The one LED serial, the 2nd LED serial and the 3rd LED serial are made up of the LED lamp spare of a plurality of mutual series connection respectively, those LED lamp spares of the one LED serial, the 2nd LED serial and the 3rd LED serial are lined up single straight line, and alternately are arranged in separately from each other in the LED lamp bar portion;
One the 2nd LED lamp bar portion, comprise one the 4th LED serial, one the 5th LED serial and one the 6th LED serial, the 4th LED serial electrically connects this second negative pole pin and this first anodal pin respectively through those circuits of this circuit board, the 5th LED serial electrically connects the 5th negative pole pin and this second anodal pin respectively through those circuits of this circuit board, and the 6th LED serial electrically connects the 8th negative pole pin and the 3rd anodal pin respectively through those circuits of this circuit board; The 4th LED serial, the 5th LED serial and the 6th LED serial are made up of the LED lamp spare of a plurality of mutual series connection respectively, those LED lamp spares of the 4th LED serial, the 5th LED serial and the 6th LED serial are lined up single straight line, and alternately are arranged in separately from each other in the 2nd LED lamp bar portion; And
One the 3rd LED lamp bar portion, comprise one the 7th LED serial, one the 8th LED serial and one the 9th LED serial, the 7th LED serial electrically connects the 3rd negative pole pin and this first anodal pin respectively through those circuits of this circuit board, the 8th LED serial electrically connects the 6th negative pole pin and this second anodal pin respectively through those circuits of this circuit board, and the 9th LED serial electrically connects the 9th negative pole pin and the 3rd anodal pin respectively through those circuits of this circuit board; The 7th LED serial, the 8th LED serial and the 9th LED serial are made up of the LED lamp spare of a plurality of mutual series connection respectively, those LED lamp spares of the 7th LED serial, the 8th LED serial and the 9th LED serial are lined up single straight line, and alternately are arranged in separately from each other in the 3rd LED lamp bar portion.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101738360A CN101661193B (en) | 2009-09-14 | 2009-09-14 | Backlight module of liquid crystal display |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101738360A CN101661193B (en) | 2009-09-14 | 2009-09-14 | Backlight module of liquid crystal display |
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| CN101661193B true CN101661193B (en) | 2011-06-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251673A (en) * | 2006-10-26 | 2008-08-27 | 三星电子株式会社 | Back-light assembly and display apparatus having the same |
| CN101416100A (en) * | 2006-03-02 | 2009-04-22 | Lg伊诺特有限公司 | Light emitting device and method for driving the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101416100A (en) * | 2006-03-02 | 2009-04-22 | Lg伊诺特有限公司 | Light emitting device and method for driving the same |
| CN101251673A (en) * | 2006-10-26 | 2008-08-27 | 三星电子株式会社 | Back-light assembly and display apparatus having the same |
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