CN203336366U - Light source, backlight source and display device - Google Patents

Light source, backlight source and display device Download PDF

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Publication number
CN203336366U
CN203336366U CN201320367966XU CN201320367966U CN203336366U CN 203336366 U CN203336366 U CN 203336366U CN 201320367966X U CN201320367966X U CN 201320367966XU CN 201320367966 U CN201320367966 U CN 201320367966U CN 203336366 U CN203336366 U CN 203336366U
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positive
negative
led lamp
light source
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CN201320367966XU
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赵向绵
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BOE Technology Group Co Ltd
BOE Hebei Mobile Display Technology Co Ltd
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BOE Technology Group Co Ltd
BOE Hebei Mobile Display Technology Co Ltd
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Abstract

The utility model belongs to the field of the display technology, and relates to a light source, a backlight source and a display device. The light source comprises an LED lamp strip, wherein the two ends of the LED lamp strip are a positive extraction electrode and a negative extraction electrode respectively, and the positive extraction electrode and/or the negative extraction electrode are/is of a bifurcation structure. The light source, the backlight source and the display device have the advantages of effectively avoiding the situation, caused by errors of a welding process or design, that bad welding phenomena such as insufficient welding and continuous welding of edges occur in a connecting line of the extraction electrodes and a bonding pad, lowering the reject ratio caused by an abnormal welding process, and guaranteeing the backlight source adopting the LED lamp strip to emit light normally, thereby guaranteeing normal work of the display device.

Description

A kind of light source, backlight and display unit
Technical field
The utility model belongs to the Display Technique field, relates to light source, backlight and display unit.
Background technology
LED(light-Emitting Diode light emitting diode) there are the advantages such as brightness is high, energy-conserving and environment-protective, life-span length.Yet, the luminous quantity of single led lamp is little, and the single-point area is limited, therefore often at least one LED lamp (normally a plurality of LED lamp) is assembled on banded flexible circuit board (FPC:Flexible Printed Circuit) or printed circuit board (PCB:Printed Circuit Board) at present, be made into LED lamp bar (LED Strip), thereby be applied in various fields, such as for decorating and the backlight of illumination class light fixture, lamp box advertisement, display unit etc.
According to the difference of application scenario, model and the size of display unit, backlight wherein can comprise a plurality of LED lamp bars, also can only comprise a LED lamp bar.The structural representation that Fig. 1 is single serial LED lamp bar in prior art, in Fig. 1, LED lamp bar comprises 8 LED lamps that tandem type connects, and two ends of LED lamp bar form extraction electrode, and extraction electrode is connected with flexible circuit board or printed circuit board respectively.Further refinement, extraction electrode comprises positive extraction electrode and negative extraction electrode, positive extraction electrode comprises positive electricity polar curve A and a positive connecting line A 1, negative extraction electrode comprises negative electricity polar curve K and a negative connecting line K 1, LED lamp bar is by positive connecting line A 1with negative connecting line K 1with flexible circuit board or printed circuit board, linking together, is the power supply of LED lamp bar by flexible circuit board or printed circuit board.
Be subject to the restriction of current solder technology and backlight size, when LED lamp bar and flexible circuit board or printed circuit board weld together, welding conditions and welding requirements are all higher, and often occur that positive connecting line and negative connecting line connect weldering, perhaps, positive connecting line or the failure weldings such as negative connecting line and pad edge rosin joint occur, directly cause backlight not luminous, thereby affect the normal operation of display unit.
The utility model content
Technical problem to be solved in the utility model is for above shortcomings in prior art, a kind of light source, backlight and display unit are provided, this light source can effectively avoid the edge rosin joint occurring because welding procedure or design error cause connecting line and pad, connect the impact that the failure weldings such as weldering produce, reduce the fraction defective extremely caused because of welding procedure, guarantee to have adopted backlight normally luminous of this LED lamp bar.
The technical scheme that solution the utility model technical problem adopts is this light source, comprises LED lamp bar, and two ends of described LED lamp bar are respectively positive extraction electrode and negative extraction electrode, and described positive extraction electrode and/or described negative extraction electrode are bifurcation structure.
Preferably, described bifurcation structure is: described positive extraction electrode comprises positive electricity polar curve and one or more the positive connecting line be connected with described positive electricity polar curve; Perhaps, described negative extraction electrode comprises negative electricity polar curve and one or more the negative connecting line be connected with described negative electricity polar curve.
Preferably, parallel to each other the arranging of described positive connecting line of one or more; Perhaps, parallel to each other the arranging of described negative connecting line of one or more.
Preferably, all positive connecting lines and the equal parallel arrangement of negative connecting line.Preferably, described LED lamp bar is arranged on supporting substrate, described supporting substrate is flexible circuit board or printed circuit board, on described flexible circuit board or described printed circuit board, be provided with and described positive connecting line and the described negative connecting line suitable pad of arranging, described positive connecting line and described negative connecting line are connected to described flexible circuit board or the suitable pad of described printed circuit board by welding manner.
Preferably, the spacing between adjacent described positive connecting line is more than or equal to the full-size of the end of the welding gun for welding the described positive connecting line described pad suitable with it; Spacing between adjacent described negative connecting line is more than or equal to the full-size of the end of the welding gun for welding the described negative connecting line described pad suitable with it; Spacing between adjacent described positive connecting line and described negative connecting line is more than or equal to the full-size of the end of the welding gun for welding described positive connecting line and the described negative connecting line pad suitable with it.
Further preferably, the spacing distance between adjacent described positive connecting line is identical; Spacing distance between adjacent described negative connecting line is identical.
Further preferably, the spacing distance between adjacent described connecting line is identical.
Wherein, described LED lamp bar comprises single led lamp; Perhaps, described LED lamp bar comprises a plurality of LED lamps that tandem type connects or parallel connection type connects.
Preferably, described light source also is included as the power supply component that described LED lamp bar provides power supply, on described power supply component, is provided with and described positive connecting line and the described negative connecting line suitable pad of arranging, and described supporting substrate is connected with power supply component.
A kind of backlight, comprise above-mentioned light source.
A kind of display unit, comprise above-mentioned backlight.
The beneficial effects of the utility model are: positive extraction electrode and/or negative extraction electrode by the end by LED lamp bar are designed to bifurcation structure, the quantity of the negative connecting line that the positive connecting line be connected with the positive electricity polar curve in the increase of the end of LED lamp bar and/or negative electricity polar curve connect, and correspondingly optimize the supporting substrate linked together with LED lamp bar, the pad of power supply component (or citing approvingly pin) wiring, make LED lamp bar with supporting substrate, when power supply component welds together, even because welding procedure or design error cause positive connecting line and negative connecting line and pad to occur that the edge rosin joint is bad, while even occurring that many connecting lines that will be connected with same extraction electrode connect failure welding such as grade welded together, LED lamp bar also can be normally luminous, thereby reduced the fraction defective extremely caused because of welding procedure, guaranteed to adopt backlight normally luminous of this LED lamp bar, thereby guaranteed the normal operation of display unit.
The accompanying drawing explanation
The structural representation that Fig. 1 is LED lamp bar in prior art;
The structural representation that Fig. 2 is LED lamp bar in the utility model embodiment 1;
Fig. 3 (comprising 3A, 3B) for Fig. 2 in the connection diagram of LED lamp bar;
Wherein:
The part plan schematic diagram that Fig. 3 A is supporting substrate;
The part plan schematic diagram that Fig. 3 B is power supply component;
The structural representation that Fig. 4,5 is LED lamp bar in the utility model embodiment 2;
The structural representation that Fig. 6,7 is LED lamp bar in the utility model embodiment 3.
In figure: 1-LED lamp bar; The 11-LED lamp; A-positive electricity polar curve; K-negative electricity polar curve; A i-positive connecting line (i is natural number); K i-negative connecting line (i is natural number); The 12-supporting substrate; The 2-power supply component.
The specific embodiment
For making those skilled in the art understand better the technical solution of the utility model, below in conjunction with the drawings and specific embodiments, the utility model light source, backlight and display unit are described in further detail.
A kind of light source, comprise LED lamp bar, and described LED lamp bar comprises at least one LED lamp, and two ends of described LED lamp bar are respectively positive extraction electrode and negative extraction electrode, and wherein, described positive extraction electrode and/or described negative extraction electrode are bifurcation structure.That is, at least arbitrary in described positive extraction electrode and described negative extraction electrode is bifurcation structure.Be also, in light source of the present utility model, described LED lamp bar can comprise the situation that only described positive extraction electrode is bifurcation structure, also can comprise the situation that only described negative extraction electrode is bifurcation structure, can also comprise that described positive extraction electrode and described negative extraction electrode are the situation of bifurcation structure.
A kind of backlight, comprise above-mentioned arbitrary described light source.
A kind of display unit, comprise above-mentioned backlight.
Embodiment 1:
A kind of light source, comprise LED lamp bar, and LED lamp bar comprises at least one LED lamp, and two ends of LED lamp bar are respectively positive extraction electrode and negative extraction electrode, and in the present embodiment, positive extraction electrode and negative extraction electrode are bifurcation structure.
Wherein, light source also is included as supporting substrate and the power supply component that LED lamp bar provides power supply, and LED lamp bar is arranged on supporting substrate, and supporting substrate is connected with power supply component.
As shown in Figure 2, positive extraction electrode comprises positive electricity polar curve A and two positive connecting line A 1, A 2, negative extraction electrode comprises negative electricity polar curve K and two negative connecting line K 1, K 2.Preferably, positive connecting line A 1, A 2parallel to each other arranging, negative connecting line K 1, K 2parallel to each other arranging, further preferably positive connecting line A 1, A 2with negative connecting line K 1, K 2parallel to each other arranging.
Wherein, in positive extraction electrode, two positive connecting line A 1, A 2an end with positive electricity polar curve A, be connected, the other end is connected (as shown in Figure 3A) with supporting substrate 12, supporting substrate 12 is connected (as shown in Figure 3 B) with power supply component 2; In negative extraction electrode, two negative connecting line K 1, K 2an end with negative electricity polar curve K, be connected, the other end is connected (as shown in Figure 3A) with supporting substrate 12, supporting substrate 12 is connected (as shown in Figure 3 B) with power supply component 2.
Preferably, supporting substrate 12 is flexible circuit board or printed circuit board, on flexible circuit board or printed circuit board, is provided with and positive connecting line A 1, A 2with negative connecting line K 1, K 2suitable pad, just connecting line A arrange 1, A 2with negative connecting line K 1, K 2be connected to flexible circuit board or the suitable pad of printed circuit board by welding manner.
As shown in Figure 3A, in supporting substrate 12, offer groove, LED lamp bar 1 is embedded in groove, and by emplastic by LED lamp bar 1 and supporting substrate 12 be fixed together (LED lamp bar 1 is embedded in groove, and groove is shown in broken lines in Fig. 3 A).Fig. 3 A also shows the positive connecting line A of LED lamp bar 1 1, A 2with negative connecting line K 1, K 2arranging on supporting substrate 12, i.e. positive connecting line A 1, A 2with negative connecting line K 1, K 2parallel to each other.As shown in Figure 3 B, on power supply component 2, be provided with and positive connecting line A 1, A 2with negative connecting line K 1, K 2the suitable pad of arranging, according to positive connecting line A 1, A 2with negative connecting line K 1, K 2arranging on supporting substrate 12, corresponding positive connecting line A on power supply component 2 1, A 2with negative connecting line K 1, K 2pad be sequentially arranged on same straight line, to guarantee the electric property between all positive connecting lines and negative connecting line, also be easy to weld job simultaneously.
In order to facilitate arranging of positive connecting line and negative connecting line, preferred adjacent positive connecting line A 1, A 2between spacing distance identical, negative connecting line K 1, K 2between spacing distance identical.Further preferably, all positive connecting line A 1, A 2with negative connecting line K 1, K 2between spacing distance all identical.That is, adjacent positive connecting line A 1, A 2between, adjacent positive connecting line A 1with negative connecting line K 1between, and negative connecting line K 1, K 2between spacing distance all identical.
Simultaneously, in order to facilitate the suction tin operation in welding process, preferably the spacing between adjacent positive connecting line is more than or equal to for welding positive connecting line A 1, A 2the full-size of the end of the welding gun of the pad suitable with it, the spacing between adjacent negative connecting line is more than or equal to for welding negative connecting line K 1, K 2the full-size of the end of the welding gun of the pad suitable with it.Further preferably, the spacing between adjacent positive connecting line and negative connecting line is more than or equal to the full-size of the end of the welding gun for being welded to connect the line pad suitable with it.
A kind of backlight, comprise above-mentioned light source.
A kind of display unit, comprise above-mentioned backlight.Display unit can be: any product or parts with Presentation Function such as liquid crystal panel, mobile phone, panel computer, television set, display, notebook computer, DPF, navigator.
Embodiment 2:
The difference of the present embodiment and embodiment 1 is, in the light source of the present embodiment, positive extraction electrode and the negative extraction electrode of LED lamp bar are bifurcation structure, and positive extraction electrode comprises that the positive connecting line that is no less than two, negative extraction electrode comprise the negative connecting line that is no less than two.
As shown in Figure 4, positive extraction electrode comprises positive electricity polar curve A and three positive connecting line A 1, A 2, A 3, positive connecting line A 1, A 2, A 3an end with positive electricity polar curve A, be connected, the other end is connected with supporting substrate 12, supporting substrate 12 is connected with power supply component 2; Negative extraction electrode comprises negative electricity polar curve K and two negative connecting line K 1, K 2, negative connecting line K 1, K 2an end with negative electricity polar curve K, be connected, the other end is connected with supporting substrate 12, supporting substrate 12 is connected with power supply component 2.
Simultaneously, as shown in Figure 5, positive extraction electrode comprises positive electricity polar curve A and three positive connecting line A 1, A 2, A 3, positive connecting line A 1, A 2, A 3an end with positive electricity polar curve A, be connected, the other end is connected with supporting substrate 12, supporting substrate 12 is connected with power supply component 2; Negative extraction electrode comprises negative electricity polar curve K and three negative connecting line K 1, K 2, K 3, negative connecting line K 1, K 2, K 3an end with negative electricity polar curve K, be connected, the other end is connected with supporting substrate 12, supporting substrate 12 is connected with power supply component 2.
In the present embodiment, other structures of light source are identical with embodiment 1, and supporting substrate can carry out the phase strain type with reference to embodiment 1 with the pad of power supply component, repeats no more here.
A kind of backlight, comprise above-mentioned light source.
A kind of display unit, comprise above-mentioned backlight.
Embodiment 3:
The difference of the present embodiment and embodiment 1,2 is, in the light source of the present embodiment, in the positive extraction electrode of LED lamp bar or negative extraction electrode, only having arbitrary is bifurcation structure..In the present embodiment, LED lamp bar or be the positive extraction electrode situation that is bifurcation structure, or be the negative extraction electrode situation that is bifurcation structure.
As shown in Figure 6, positive extraction electrode only comprises positive electricity polar curve A and a positive connecting line A 1, positive connecting line A 1an end with positive electricity polar curve A, be connected, the other end is connected with supporting substrate 12, supporting substrate 12 is connected with power supply component 2; Negative extraction electrode comprises negative electricity polar curve K and two negative connecting line K 1, K 2, negative connecting line K 1, K 2an end with negative electricity polar curve K, be connected, the other end is connected with supporting substrate 12, supporting substrate 12 is connected with power supply component 2.
Perhaps, as shown in Figure 7, positive extraction electrode comprises positive electricity polar curve A and two positive connecting line A 1, A 2, positive connecting line A 1, A 2an end with positive electricity polar curve A, be connected, the other end is connected with supporting substrate 12, supporting substrate 12 is connected with power supply component 2; Negative extraction electrode only comprises negative electricity polar curve K and a negative connecting line K 1, negative connecting line K 1an end with negative electricity polar curve K, be connected, the other end is connected with supporting substrate 12, supporting substrate 12 is connected with power supply component 2.
In the present embodiment, other structures of light source are identical with embodiment 1, and supporting substrate can carry out the phase strain type with reference to embodiment 1 with the pad of power supply component, repeats no more here.
A kind of backlight, comprise above-mentioned light source.
A kind of display unit, comprise above-mentioned backlight.
In the light source of embodiment 1-3, positive extraction electrode and/or negative extraction electrode by the end by LED lamp bar are designed to bifurcation structure, the quantity of the negative connecting line that the positive connecting line be connected with the positive electricity polar curve in the increase of the end of LED lamp bar and/or negative electricity polar curve connect, and correspondingly optimize the supporting substrate linked together with LED lamp bar, the pad of power supply component (or citing approvingly pin) wiring, make LED lamp bar with supporting substrate in pad while welding together, even because welding procedure or design error cause positive connecting line and negative connecting line and pad to occur that the edge rosin joint is bad, while even occurring will connecting line positive with many that same extraction electrode is connected connecting failure welding such as grade welded together, LED lamp bar also can be normally luminous, thereby reduced the fraction defective extremely caused because of welding procedure, guaranteed to adopt backlight normally luminous of this LED lamp bar, thereby guaranteed the normal operation of display unit.
Here it should be understood that in the utility model, LED lamp bar comprises single led lamp; Perhaps, LED lamp bar comprises a plurality of LED lamps that tandem type connects or parallel connection type connects.Wherein, LED lamp bar be tandem type connect a plurality of LED lamp the time, LED lamp bar comprises a positive electricity polar curve A and a negative electricity polar curve K, and at least two positive connecting line A of bifurcated now are set at the end of positive electricity polar curve A ithe end of (i is natural number) and/or negative electricity polar curve K arranges at least two negative connecting line K of bifurcated i(i is natural number) gets final product; LED lamp bar be parallel connection type connect a plurality of LED lamp the time, can be in the same electrode terminals of the many groups of sub-LED lamp bars (every group of sub-LED lamp bar has at least one LED lamp) that form LED lamp bar, first draw respectively a positive electricity polar curve A and a negative electricity polar curve K, and then at least two positive connecting line A of bifurcated are set at the end of positive electricity polar curve A respectively i(i is natural number) and or/end of electrode wires K arranges at least two negative connecting line K of bifurcated i(i is natural number).
Simultaneously; it should be understood that; LED lamp bar in the utility model light source; the bifurcation structure of its extraction electrode part; do not limit the example that embodiment 1-3 limits; as long as can guarantee LED lamp bar and provide the supporting substrate of power supply and the welding quality between power supply component to it, all fall in protection domain of the present utility model.
Light source in the utility model embodiment, be particularly useful for adopting the few LED lamp series connection of quantity for example to form, in the compact display apparatus (: in liquid crystal display screen of mobile phone) of LED lamp bar, like this, because having many connecting lines, same electrode wires is attached thereto, even the bad of edge rosin joint appears in a connecting line wherein, also can guarantee the luminous of LED lamp bar; Simultaneously, also just because of same electrode wires, having many connecting lines is attached thereto, even weldering occurs connecting because the line-spacing between the connecting line be connected with same electrode wires is less, also can guarantee the luminous of LED lamp bar, can effectively avoid the backlight bad problem caused because of failure welding, improve product yield.
Be understandable that, above embodiment is only the illustrative embodiments adopted for principle of the present utility model is described, yet the utility model is not limited to this.For those skilled in the art, in the situation that do not break away from spirit of the present utility model and essence, can make various modification and improvement, these modification and improvement also are considered as protection domain of the present utility model.

Claims (10)

1. a light source, comprise LED lamp bar, and two ends of described LED lamp bar are respectively positive extraction electrode and negative extraction electrode, it is characterized in that, described positive extraction electrode and/or described negative extraction electrode are bifurcation structure.
2. light source according to claim 1, is characterized in that, described bifurcation structure is: described positive extraction electrode comprises positive electricity polar curve and one or more the positive connecting line be connected with described positive electricity polar curve; Perhaps, described negative extraction electrode comprises negative electricity polar curve and one or more the negative connecting line be connected with described negative electricity polar curve.
3. light source according to claim 2, is characterized in that, parallel to each other the arranging of described positive connecting line of one or more; Perhaps, parallel to each other the arranging of described negative connecting line of one or more.
4. light source according to claim 3, it is characterized in that, described LED lamp bar is arranged on supporting substrate, described supporting substrate is flexible circuit board or printed circuit board, on described flexible circuit board or described printed circuit board, be provided with and described positive connecting line and the described negative connecting line suitable pad of arranging, described positive connecting line and described negative connecting line are connected to described flexible circuit board or the suitable pad of described printed circuit board by welding manner.
5. light source according to claim 4, is characterized in that, the spacing between adjacent described positive connecting line is more than or equal to the full-size of the end of the welding gun for welding the described positive connecting line described pad suitable with it; Spacing between adjacent described negative connecting line is more than or equal to the full-size of the end of the welding gun for welding the described negative connecting line described pad suitable with it; Spacing between adjacent described positive connecting line and described negative connecting line is more than or equal to the full-size of the end of the welding gun for welding described positive connecting line and the described negative connecting line pad suitable with it.
6. light source according to claim 5, is characterized in that, the spacing distance between adjacent described positive connecting line is identical; Spacing distance between adjacent described negative connecting line is identical.
7. according to the arbitrary described light source of claim 1-6, it is characterized in that, described LED lamp bar comprises single led lamp; Perhaps, described LED lamp bar comprises a plurality of LED lamps that tandem type connects or parallel connection type connects.
8. according to the arbitrary described light source of claim 1-6, it is characterized in that, described light source also is included as the power supply component that described LED lamp bar provides power supply, on described power supply component, be provided with and described positive connecting line and the described negative connecting line suitable pad of arranging, described supporting substrate is connected with power supply component.
9. a backlight, comprise light source, it is characterized in that, described backlight comprises the arbitrary described light source of claim 1-8.
10. a display unit, comprise backlight, it is characterized in that, described display unit comprises backlight claimed in claim 9.
CN201320367966XU 2013-06-25 2013-06-25 Light source, backlight source and display device Active CN203336366U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105954931A (en) * 2016-06-28 2016-09-21 广东欧珀移动通信有限公司 Backlight module, display module and electronic apparatus
CN107078184A (en) * 2014-10-17 2017-08-18 Lg伊诺特有限公司 The light emitting device package of luminescent device including luminescent device and the light-emitting device including light emitting device package

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107078184A (en) * 2014-10-17 2017-08-18 Lg伊诺特有限公司 The light emitting device package of luminescent device including luminescent device and the light-emitting device including light emitting device package
CN107078184B (en) * 2014-10-17 2019-06-04 Lg伊诺特有限公司 Luminescent device, the light emitting device package including luminescent device and the light emitting device including light emitting device package
CN105954931A (en) * 2016-06-28 2016-09-21 广东欧珀移动通信有限公司 Backlight module, display module and electronic apparatus

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