CN105570736A - Light source device - Google Patents
Light source device Download PDFInfo
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- CN105570736A CN105570736A CN201510918768.1A CN201510918768A CN105570736A CN 105570736 A CN105570736 A CN 105570736A CN 201510918768 A CN201510918768 A CN 201510918768A CN 105570736 A CN105570736 A CN 105570736A
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- expansion regions
- axis
- line part
- profile
- light source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
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- General Engineering & Computer Science (AREA)
- Liquid Crystal (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention relates to a light source device. The light source device comprises light sources and a circuit board, wherein each light source is provided with at least one electrical contact; each electrical contact is provided with a connection face contour; each connection face contour comprises a plurality of corner coupling portions and a plurality of straight line portions; and the straight line portions are connected among the corresponding corner coupling portions. The circuit board is provided with at least one welding pad; each welding pad is in power-supply connection with the corresponding electrical contacts; each welding pad is provided with a welding face contour, an overlap area and a plurality of expansion areas; when the electrical contacts are overlapped with the overlap areas correspondingly, the connection face contours fall into the ranges of the welding face contours, and the welding face contours are substantially internally connected with the corner coupling portions of the connection face contours; and each expansion area is adjacent to one of the straight line portions and thereby expands outwards. According to the light source device, the connection face contours fall into the ranges of the welding face contours, jointing positions of the electrical contacts can be effectively located, and accuracy of the light source welding position can be enhanced.
Description
Technical field
The present invention about a kind of light supply apparatus, specifically, the present invention about a kind of welded gasket shape improving circuit board to promote the light supply apparatus of light source welding accuracy.
Background technology
The backlight module of illuminated keyboard is made up of light source, circuit board, light guide plate and various blooming piece (such as reflector plate, shade sheet) usually, and the site error wherein when light source and assembling light guiding plate is the key factor affecting illuminated keyboard brightness.Especially, when light guide plate gets over thinning design, light source is welded in the site error of circuit board, seriously affects the light quantity that light guide plate receives, and causes brightness reduction or the brightness disproportionation of illuminated keyboard.
The design of known light source and circuit board focuses on considering in mechanical strength thrust usually, makes the shape of circuit board corresponding light source electric contact have the welded gasket of outside uniform expansion, to strengthen the bond strength of light source and circuit board.But, when the amount of expansion of welded gasket is larger, scolding tin dispensing area is increased relatively, and then in solder reflow process, cause the error of light source displacements to strengthen, finally have a strong impact on the optical performance of backlight module.
Therefore, how average out one of emphasis of researching and developing into light supply apparatus on the bond strength and optical performance of light source and circuit board.
Summary of the invention
One of the present invention object is to provide a kind of light supply apparatus, and it has the design tightening welded gasket, the optical brightness applied with the laser intensity and light supply apparatus that balance light source joint.
Another object of the present invention is to provide a kind of light supply apparatus, it is by the junction profile connecing light source electric contact in the face of weld profile essence of welded gasket, to limit the bonding station of light source, and then promotes the accuracy of light source joint.
Another object of the present invention is to provide a kind of light supply apparatus, and it effectively reduces the scolding tin applying area of circuit board, and to reduce in reflow process, the random flowing of scolding tin under melting state, effectively reduces light source and engage the lateral displacement error produced.
In an embodiment, the invention provides a kind of light supply apparatus, it comprises light source and circuit board, wherein light source has at least one electric contact, at least one electric contact has junction profile, and junction profile comprises plural corner part and a plurality of line part, and a plurality of line part is connected between this plural corner part; Circuit board has at least one welded gasket, and at least one welded gasket is electrically connected at least one electric contact, and at least one welded gasket has face of weld profile, and welded gasket also has overlay region and a plurality of expansion regions; When at least one electric contact overlap corresponding to overlay region, junction profile falls in the scope of face of weld profile, and the plural corner part of junction profile in face of weld profile essence, each expansion regions of this plurality of expansion regions be adjacent to a plurality of line part one of them and expand outwardly.
In another embodiment, the invention provides a kind of light supply apparatus, it comprises light source and circuit board, wherein light source has light-emitting area and at least one electric contact, light-emitting area extends along X-direction and has normal direction, and normal direction is the Y direction vertical with X-direction, and at least one electric contact has junction profile, junction profile comprises plural corner part and a plurality of line part, and a plurality of line part is connected between plural corner part; Circuit board has at least one welded gasket, and at least one welded gasket is for being electrically connected to a few electric contact, and at least one welded gasket has face of weld profile and has overlay region and a plurality of expansion regions; Wherein a plurality of line part comprises a plurality of X-axis line part being parallel to X-direction extension and a plurality of Y-axis line parts being parallel to Y direction extension, and a plurality of expansion regions comprises a plurality of X-axis expansion regions and a plurality of Y-axis expansion regions; When at least one electric contact overlap corresponding to overlay region, each X-axis expansion regions of a plurality of X-axis expansion regions be adjacent to a plurality of Y-axis line part one of them and expand outwardly along X-direction, each Y-axis expansion regions of a plurality of Y-axis expansion regions be adjacent to a plurality of X-axis line part one of them and expand outwardly along Y direction, the summation of a plurality of X-axis expansion regions area is greater than the summation of a plurality of Y-axis expansion regions area.
In another embodiment again, the invention provides a kind of light supply apparatus, it comprises light source and circuit board, wherein light source has light-emitting area and at least one electric contact, light-emitting area extends along X-direction and has normal direction, and normal direction is the Y direction vertical with X-direction, and at least one electric contact has junction profile, junction profile comprises plural corner part and a plurality of line part, and a plurality of line part is connected between plural corner part, circuit board has at least one welded gasket, and at least one welded gasket is for being electrically connected to a few electric contact, and at least one welded gasket has face of weld profile and has overlay region and a plurality of expansion regions, wherein a plurality of line part comprises a plurality of X-axis line part being parallel to X-direction extension and a plurality of Y-axis line parts being parallel to Y direction extension, and a plurality of expansion regions comprises a plurality of X-axis expansion regions and a plurality of Y-axis expansion regions, when at least one electric contact overlap corresponding to overlay region, each X-axis expansion regions of a plurality of X-axis expansion regions be adjacent to a plurality of Y-axis line part one of them and expand outwardly along X-direction, define a plurality of X-axis expansion regions respectively with the summit that corresponding Y-axis line part spacing maximum is X-axis expansion regions, each Y-axis expansion regions of a plurality of Y-axis expansion regions be adjacent to a plurality of X-axis line part one of them and expand outwardly along Y direction, define a plurality of Y-axis expansion regions respectively with the summit that corresponding X-axis line part spacing maximum is Y-axis expansion regions, the summit of each X-axis expansion regions of a plurality of X-axis expansion regions and the summation of corresponding Y-axis line part spacing are greater than the summit of each Y-axis expansion regions of a plurality of Y-axis expansion regions and the summation of corresponding X-axis line part spacing.
In another embodiment, the invention provides a kind of light supply apparatus, it comprises light source and circuit board, wherein light source has light-emitting area and at least one electric contact, light-emitting area extends along X-direction and has normal direction, and normal direction is the Y direction vertical with X-direction, and at least one electric contact has junction profile, junction profile system is made up of plural corner part and the plural line part be connected between plural corner part, and this plural line part comprises a plurality of X-axis line part; Circuit board has at least one welded gasket, at least one welded gasket is for being electrically connected to a few electric contact, at least one welded gasket has face of weld profile and has overlay region and a plurality of Y-axis expansion regions, with make junction profile corresponding with overlay region overlapping time, junction profile falls in the scope of face of weld profile, each Y-axis expansion regions of a plurality of Y-axis expansion regions be adjacent to a plurality of X-axis line part one of them and expand outwardly along Y direction, define each a plurality of Y-axis expansion regions respectively with the summit that corresponding X-axis line part spacing maximum is Y-axis expansion regions; Wherein in the Y-axis direction, the distance between plural corner part and face of weld profile is less than the distance between the X-axis line part at plural corner part place and the summit of Y-axis expansion regions.
In an embodiment, this welded gasket is at least one also has a plurality of X-axis expansion regions, this plural line part also comprises a plurality of Y-axis line part, with make this junction profile corresponding with this overlay region overlapping time, each X-axis expansion regions of this plurality of X-axis expansion regions be adjacent to this plurality of Y-axis line part one of them and expand outwardly along this X-direction, define this plurality of X-axis expansion regions respectively with the summit that corresponding Y-axis line part spacing maximum is this X-axis expansion regions; Wherein in this X-direction, the distance between this plural corner part and this face of weld profile is less than the distance between this Y-axis line part and summit of this X-axis expansion regions at this plural corner part place.
In an embodiment, junction profile is L shape, and face of weld profile is heart-shaped.
In an embodiment, L shape is connected by vertical section and horizontal segment and forms, and heart-shaped first the second ellipse that is oval and external horizontal segment by external vertical section formed.
In an embodiment, the part of the corresponding plural line part of face of weld profile is linear, curved or irregular shape.
In an embodiment, face of weld profile is in order to define the setting area of scolding tin.
In an embodiment, circuit board has cover layer, and cover layer has at least one opening, to expose at least one welded gasket, and the wherein corresponding face of weld profile of the shape of tectal opening.
Compared with prior art, light supply apparatus of the present invention, can the bonding station of effective location electric contact close to the edge of face of weld profile by plural corner part location, to promote the accuracy of light source welding position.In addition, the junction profile of light source falls in the scope of face of weld profile, and in this face of weld profile, connect this plural corner part of this junction profile, each expansion regions of this plurality of expansion regions be adjacent to this plurality of line part one of them and expand outwardly set-up mode, make light source can have larger welding enough and to spare in a different direction to strengthen weld strength simultaneously, and the welding enough and to spare comparatively tightened is to limit the weld displacement of light source, laser intensity when engaging with active balance light source and optical brightness.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the light supply apparatus of one embodiment of the invention;
Fig. 2 A is the stereogram of the light source of one embodiment of the invention light supply apparatus;
Fig. 2 B is the upward view of the light source of one embodiment of the invention light supply apparatus;
Fig. 3 A to Fig. 3 D is the schematic diagram of the circuit board of the light supply apparatus of one embodiment of the invention;
Fig. 3 E is the schematic diagram of the face of weld configuration design of the welded gasket of the circuit board of the light supply apparatus of one embodiment of the invention;
Fig. 4 is the configuration schematic diagram of the light supply apparatus of one embodiment of the invention;
Fig. 5 is the configuration schematic diagram of the light supply apparatus of another embodiment of the present invention;
Fig. 6 is the configuration schematic diagram of the light supply apparatus of further embodiment of this invention;
Fig. 7 A to Fig. 7 C is the schematic diagram of the face of weld profile of the welded gasket of the circuit board of light supply apparatus of the present invention;
Fig. 8 A and Fig. 8 B is that light supply apparatus of the present invention is applied to backlight module, the relative position schematic diagram of light supply apparatus and light guide plate.
Detailed description of the invention
The invention provides a kind of light supply apparatus, especially a kind of improve circuit board welded gasket shape so that promote the light supply apparatus that light source engages accuracy.Specifically, light supply apparatus preferred application of the present invention is in backlight module, especially the backlight module of input unit (such as illuminated keyboard), it is by the profile design of welding circuit board pad, promote the setting accuracy of light source, to reduce the error of light source welding position, and then improve the guide-lighting efficiency of light guide plate (especially very thin light guide plate).Yu Hou, describes the details of the light supply apparatus of the embodiment of the present invention in detail with reference to accompanying drawing.
As shown in Figure 1, in an embodiment, light supply apparatus 1 of the present invention comprises light source 10 and circuit board 20, and wherein light source 10 is arranged at circuit board 20 and electrical connection circuit plate 20.In this embodiment, light source 10 is preferably light-emittingdiode (LED), and circuit board 20 is preferably flexible printed wiring board (FPC), but not as limit.Moreover in this embodiment, light source 10 is more preferred from the light-emittingdiode of side luminescence, and circuit board 20 can be provided with a plurality of light source 10, to make, plural light source 10 is better to be set to towards the relative both sides emission of light of circuit board 20, but not as limit.In the rear light source 10 and the circuit board 20 that describe the present embodiment with reference to accompanying drawing in detail.
Fig. 2 A is the stereogram of the light source of the light supply apparatus of one embodiment of the invention, and Fig. 2 B is the upward view of the light source of the light supply apparatus of one embodiment of the invention.As shown in Figure 2 A and 2 B, light source 10 has light-emitting area 12 and at least one electric contact 14, such as the positive and negative electrode of two electric contact 14 difference electrical connection circuit plates 20.For the light-emittingdiode of side luminescence, light-emitting area 12 is positioned at side, and electric contact 14 is positioned at bottom surface 13, side and bottom surface 13 adjacent to each other, and light-emitting area 12 extends along X-direction, wherein the normal direction N of light-emitting area 12 is the Y direction vertical with X-direction, and Z-direction is the thickness direction of light source 10, or short transverse when light source 10 is arranged at circuit board 20.In other words, light-emitting area 12 is preferably the surface that light source 10 is parallel to X-Z axial plane, and light source 10 self-luminous face 12 is towards the outside emission of light of Y direction.
Electric contact 14 is arranged at bottom surface 13, and wherein bottom surface 13 is preferred parallel in X-Y axial plane.Electric contact 14 has junction profile 14a, and junction profile 14a comprises plural corner part 142 and a plurality of line part 144, and wherein a plurality of line part 144 is connected between plural corner part 142.Specifically, junction profile 14a is the shape of the junction that electric contact 14 is electrically connected with circuit board 20, and is generally the cross sectional shape of the parallel bottom surface 13 (or X-Y axial plane) of electric contact 14, or is the bottom face profile of electric contact 14 end.In this embodiment, junction profile 14a is L shape, and the junction profile 14a of L shape is connected by vertical section 144v and horizontal segment 144h and forms, wherein vertical section 144v is arranged along Y direction, horizontal segment 144h is arranged along X-direction, and the appearance profile that vertical section 144v and horizontal segment 144h is formed is junction profile 14a.
From another viewpoint, a plurality of line part 144 comprises and is parallel to a plurality of X-axis line part 144x1,144x2,144x3 that X-direction extends and a plurality of Y-axis line part 144y1,144y2,144y3 of being parallel to Y direction extension, and plural line part 144 connects and forms plural corner part 142.In this embodiment, corner part 142 is the outer rim salient angle of junction profile 14a, and wherein X-axis line part 144x1 connects with Y-axis line part 144y1 and forms corner part 142a; X-axis line part 144x2 connects with Y-axis line part 144y2 and forms corner part 142b; X-axis line part 144x3 connects with Y-axis line part 144y2 and forms corner part 142c; X-axis line part 144x3 connects with Y-axis line part 144y3 and forms corner part 142d; X-axis line part 144x1 connects with Y-axis line part 144y3 and forms corner part 142e.In this embodiment, X-axis line part 144x1 ~ 144x3 and the better right angles of Y-axis line part 144y1 ~ 144y3, to form the corner part 142 at essence right angle, but not as limit.In other embodiments, corner part 142 can be fillet or rescinded angle, or has the angle being greater than or less than 90 degree.
As shown in Fig. 3 A to Fig. 3 D, circuit board 20 has at least one welded gasket 22, at least one electric contact 14 of electrical connection light source 10.Welded gasket 22 has face of weld profile 22a, that is face of weld profile 22a in order to be defined in, circuit board 20 is arranged the setting area of scolding tin.In assembling process, adhesive surface board (SMT) can first tentatively be fixedly combined to light source 10 piece on welded gasket 22, light supply apparatus 1 can heat reflow again after a while, allow scolding tin again melting and have part climb tin on light source 10, so add the adhesion between intense light source 10 and welded gasket 22; That is face of weld profile 22a is in the reflow process making light source 10 be combined with circuit board 20, light source 10 may because scolding tin melting flowing the Probability Area scope of offset deviation again.Specifically, circuit board 20 extends along X-Y axial plane, and welded gasket 22 is arranged at the upper surface that circuit board 20 is parallel to X-Y axial plane.Face of weld profile 22a is the shape of the solder side that welded gasket 22 is electrically connected with electric contact 14, and is generally the cross sectional shape that welded gasket 22 is parallel to X-Y axial plane, or is the top face profiles of welded gasket 22 end.Moreover, welded gasket 22 has overlay region 222 and a plurality of expansion regions 224 in parallel X-Y axial plane, the appearance profile that wherein overlay region 222 and a plurality of expansion regions 224 are formed is face of weld profile 22a, and the shape of overlay region 222 is better corresponding with the junction profile 14a of electric contact 14.Overlay region 222 be preferably the expansion of complex number district 224 institute around, and the shape of overlay region 222 and size identical with junction profile 14a.For example, in this embodiment, a plurality of expansion regions 224 comprises a plurality of X-axis expansion regions 224x1,224x2,224x3 and a plurality of Y-axis expansion regions 224y1,224y2,224y3.When electric contact 14 overlap corresponding to overlay region 222, each expansion regions of 224x1,224x2,224x3, a plurality of X-axis expansion regions be adjacent to a plurality of Y-axis line part 144y1 ~ 144y3 one of them and expand outwardly along X-direction, each expansion regions of a plurality of Y-axis expansion regions 224y1,224y2,224y3 be adjacent to a plurality of X-axis line part 144x1 ~ 144x3 one of them and expand outwardly along Y direction.
In this embodiment, the electric contact 14 of corresponding L shape, face of weld profile 22a is preferably heart, but not as limit.As shown in FIGURE 3 E, better the first ellipse 226 by external L shape electric contact 14 vertical section 144v view field on circuit board 20 of heart-shaped face of weld profile 22a, and external horizontal segment 144h second oval 228 the forming of view field on circuit board 20.Specifically, after both light source 10 and welded gasket 22 combine, first ellipse 226 better essence inscribed angle corner portion 142a, 142d, 142e, and second ellipse 228 better essence inscribed angle corner portion 142b, 142c, 142d, after adding up the first oval 226 and second ellipse 228 by this, face of weld profile 22a heart-shaped as figs. 3 a-3 e can be formed.Should be noted at this, corresponding corner part 142 or contiguous corresponding corner part 142 is connect in the better essence of the first oval 226 and second ellipse 228, and the major axis of the first ellipse 226, second ellipse 228 and the better expansion regions 224 of face of weld profile 22a that makes of the selection of minor axis (or eccentricity) have suitable expansion, the corresponding electric contact 14 of soldering tin is made to have relatively large local outburst area, to increase bond strength when light source 10 and circuit board 20 weld.Should be noted at this, the amount of expansion of expansion regions 224 can be welded in the thrust test request of circuit board 20 according to light source 10 and change.
Moreover; in this embodiment; as shown in Fig. 3 A to Fig. 3 D; Fig. 3 C is the profile of the circuit board in Fig. 3 A along AA line; circuit board 20 is made up of the multiple-level stack of insulating barrier and conductive layer; wherein circuit board 20 is better has cover layer 24 and is covered in the top of circuit board 20 to protect the circuit structure under it, but not as limit.When circuit board 20 has cover layer 24, cover layer 24 has at least one opening 24a, to expose at least one welded gasket 22, and the better correspondence of shape of its split shed 24a and slightly larger than the face of weld profile 22a of welded gasket 22.That is opening 24a edge is better keeps a constant spacing with face of weld profile 22a, in this embodiment, the opening 24a of cover layer 24 is better is also heart-shaped, and welded gasket 22 is arranged in opening 24a.
As shown in Figure 4, when light source 10 is welded in circuit board 20, electric contact 14 is corresponding with the overlay region 222 of welded gasket 22 overlapping, wherein junction profile 14a essence falls in the scope of face of weld profile 22a completely, and the plural corner part 142 of junction profile 14a in the better essence of face of weld profile 22a, each expansion regions of a plurality of expansion regions 224 be adjacent to a plurality of line part 144 one of them and expand outwardly.In other words, the face of weld profile 22a of welded gasket 22 is designed to have essence can contain area and the shape of the junction profile 14a of electric contact 14 completely, and face of weld profile 22a has the design of deflation in the part of the corner part 142 of corresponding junction profile 14a, and in the part of the line part 144 of corresponding junction profile 14a, there is looser design.That is, face of weld profile 22a is at the part comparatively contiguous junction profile 14a of other parts (such as the part in line correspondence portion 144) of the corner part 142 of corresponding junction profile 14a, when light source 10 is electrically connected with circuit board 20, locating close to the edge of face of weld profile 22a by corner part 142 can the bonding station of effective location electric contact 14, to promote the accuracy of light source 10 welding position, and then have less side-play amount at light emission direction (Y direction) when making light supply apparatus 1 be applied to backlight module, make the luminance raising of backlight module.
Moreover, from another viewpoint, as shown in Figure 4, the face of weld profile 22a of the welded gasket 22 of circuit board 20 is designed to: when electric contact 14 overlap corresponding to overlay region 222, each expansion regions of a plurality of X-axis expansion regions 224x1 ~ 224x3 be adjacent to a plurality of Y-axis line part 144y1 ~ 144y3 one of them and expand outwardly along X-direction, each expansion regions of a plurality of Y-axis expansion regions 224y1 ~ 224y3 be adjacent to a plurality of X-axis line part 144x1 ~ 144x3 one of them and expand outwardly along Y direction, and the area summation of a plurality of X-axis expansion regions 224x1 ~ 224x3 is greater than a plurality of Y-axis expansion regions 224y1 ~ 224y3 area summation.By this, make light source 10 can have larger welding enough and to spare to strengthen weld strength by X-direction, simultaneously there is the welding enough and to spare that comparatively tightens to limit light source 10 in the weld displacement of Y direction (i.e. light emission direction) by Y direction, to balance laser intensity when light source 10 engages and optical brightness.
Moreover, the face of weld profile 22a of the welded gasket 22 of circuit board 20 can have different designs condition, and design face of weld profile 22a being had in the part of the plural corner part 142 of the junction profile 14a of corresponding electric contact 14 relatively tighten is to promote location and the bonding accuracy of light source 10.In another embodiment, as shown in Figure 5, the face of weld profile 22a of the welded gasket 22 of circuit board 20 is designed to: when electric contact 14 overlap corresponding to overlay region 222, each X-axis expansion regions of a plurality of X-axis expansion regions 224x1 ~ 224x3 be adjacent to a plurality of Y-axis line part 144y1 ~ 144y3 one of them and expand outwardly along X-direction, and define a plurality of X-axis expansion regions 224x1 ~ 224x3 respectively with summit 226x1 ~ 226x3 that corresponding Y-axis line part 144y1 ~ 144y3 spacing maximum is X-axis expansion regions.Each expansion regions of a plurality of Y-axis expansion regions 224y1 ~ 224y3 be adjacent to a plurality of X-axis line part 144x1 ~ 144x3 one of them and expand outwardly along Y direction, and define a plurality of Y-axis expansion regions 224y1 ~ 224y3 respectively with summit 226y1 ~ 226y3 that corresponding X-axis line part 144x1 ~ 144x3 spacing maximum is Y-axis expansion regions.In this embodiment, the summation of the summit 226x1 ~ 226x3 of a plurality of X-axis expansion regions and the spacing of corresponding Y-axis line part 144y1 ~ 144y3 is greater than the summation of the summit 226y1 ~ 226y3 of a plurality of Y-axis expansion regions and the spacing of corresponding X-axis line part 144x1 ~ 144x3.
Specifically, the summit 226x1 of X-axis expansion regions 224x1 and the spacing dx1 of corresponding Y-axis line part 144y2, the summation of the summit 226x2 of X-axis expansion regions 224x2 and the spacing dx3 of the spacing dx2 of corresponding Y-axis line part 144y3 and the summit 226x3 of X-axis expansion regions 224x3 and corresponding Y-axis line part 144y1 is greater than the summit 226y1 of Y-axis expansion regions 224y1 and the spacing dy1 of corresponding X-axis line part 144x1, the summation of the summit 226y2 of Y-axis expansion regions 224y2 and the spacing dy3 of the spacing dy2 of corresponding X-axis line part 144x3 and the summit 226y3 of Y-axis expansion regions 224y3 and corresponding X-axis line part 144x2, i.e. dx1+dx2+dx3>dy1+dy2+dy3.By this, make light source 10 can have larger welding enough and to spare to strengthen weld strength by X-direction, simultaneously there is the welding enough and to spare that comparatively tightens to limit light source 10 in the weld displacement of Y direction (i.e. light emission direction) by Y direction, to balance laser intensity when light source 10 engages and optical brightness.
In another embodiment, as shown in Figure 6, the face of weld profile 22a of the welded gasket 22 of circuit board 20 is designed to: in the Y-axis direction, and the distance between each corner part and face of weld profile 22a is less than the distance between the X-axis line part at corner part place and the summit of Y-axis expansion regions.For example, corner part 142a, 142e are at the two ends of X-axis line part 144x1, and its corresponding Y-axis expansion regions 224y1, wherein in the Y-axis direction, the distance (such as close to zero) between corner part 142a, 142e and face of weld profile 22a is less than the distance dy1 between the summit 226y1 of X-axis line part 144x1 and Y-axis expansion regions 224y1.In other words, in this embodiment, a plurality of Y-axis expansion regions 224y1 ~ 224y3 preferred configuration is that two ends in the X-axis direction have relatively little amount of expansion, effectively limit the location enough and to spare of light source 10 in Y direction by this, to promote the accuracy of light source 10 welding position, and there is relatively large amount of expansion to promote the weld strength of light source 10 by 226y1 ~ 226y3 position, summit of a plurality of Y-axis expansion regions in the X-axis direction between two ends.
Moreover, in another embodiment of the present invention, the face of weld profile 22a of the welded gasket 22 of circuit board 20 is further designed to: in the X-axis direction, and the distance between a plurality of corner part and face of weld profile 22a is less than the distance between the Y-axis line part at a plurality of corner part place and the summit of X-axis expansion regions.For example, corner part 142b, 142c are at the two ends of Y-axis line part 144y2, and corresponding X-axis expansion regions 224x1, wherein in the X-axis direction, the distance (such as close to zero) between corner part 142b, 142c and face of weld profile 22a is less than the distance dx1 between the summit 226x1 of Y-axis line part 144y2 and X-axis expansion regions 224x1.In other words, in this embodiment, a plurality of X-axis expansion regions 224x1 ~ 224x3 preferred configuration is that two ends in the Y-axis direction have relatively little amount of expansion, effectively limit the location enough and to spare of light source 10 in X-direction further by this, to promote the accuracy in the X-direction of light source 10 welding position further, and there is relatively large amount of expansion to promote the weld strength of light source 10 by 226x1 ~ 226x3 position, summit of X-axis expansion regions in the Y-axis direction between two ends.
In addition, though the various design features of welded gasket 22 are described, not as limit in above-described embodiment with identical face of weld profile 22a (such as heart-shaped).In other embodiments of the present invention, as shown in Fig. 7 A to Fig. 7 C, the part of the face of weld profile of welded gasket 22b, 22c, 22d, the plural line part 144 of corresponding electric contact 14 can be linear, curved or irregular shape, and namely expansion regions 224 can have different expansion shapes.In addition, though the junction profile 14a of electric contact 14 is described with L shape in above-described embodiment, not as limit, the electric contact 14 of light source can be any junction profile comprising the corner part of outer rim salient angle, is not limited shown in the accompanying drawing of the embodiment of the present invention.
Moreover, in an embodiment, as shown in Fig. 8 A and Fig. 8 B, when applying light supply apparatus 1 ' of the present invention in backlight module, the plural light source 10 of the effective control of cause is welded in welding position skew during circuit board 20, and make the distance d essence between the light-emitting area 12 of plural each light source 10 of light source 10 and the incidence surface 301 of light guide plate 300 equal, and then effectively promote light luminance and the uniformity of backlight module.
The present invention is described by above-described embodiment, however above-described embodiment be only illustrate object but not for restriction.This those skilled in the art ripe, when knowing not departing under spirit of the present invention, can have other amendments of illustrative embodiments in this embodiment illustrated.Therefore, scope also contains this type of amendment, and is only limited by claim.
Claims (10)
1. a light supply apparatus, is characterized in that, this light supply apparatus comprises:
Light source, this light source has at least one electric contact, and this at least one electric contact has junction profile, and this junction profile comprises plural corner part and a plurality of line part, and this plurality of line part is connected between this plural corner part; And
Circuit board, this circuit board has at least one welded gasket, and this at least one welded gasket is electrically connected this at least one electric contact, and this welded gasket has face of weld profile, and this welded gasket has overlay region and a plurality of expansion regions;
Wherein, when this at least one electric contact overlap corresponding to this overlay region, this junction profile falls in the scope of this face of weld profile, and connect this plural corner part of this junction profile in this face of weld profile, each expansion regions of this plurality of expansion regions be adjacent to this plurality of line part one of them and expand outwardly.
2. a light supply apparatus, is characterized in that, this light supply apparatus comprises:
Light source, this light source has light-emitting area and at least one electric contact, this light-emitting area extends along X-direction and has normal direction, this normal direction is the Y direction vertical with this X-direction, this at least one electric contact has junction profile, this junction profile comprises plural corner part and a plurality of line part, and this plurality of line part is connected between this plural corner part; And
Circuit board, this circuit board has at least one welded gasket, and this at least one welded gasket is electrically connected this at least one electric contact, and this at least one welded gasket has face of weld profile, and this welded gasket has overlay region and a plurality of expansion regions;
Wherein, this plurality of line part comprises and is parallel to a plurality of X-axis line part that this X-direction extends and a plurality of Y-axis line parts being parallel to the extension of this Y direction, and this plurality of expansion regions comprises a plurality of X-axis expansion regions and a plurality of Y-axis expansion regions;
When this at least one electric contact overlap corresponding to this overlay region, each X-axis expansion regions of this plurality of X-axis expansion regions be adjacent to this plurality of Y-axis line part one of them and expand outwardly along this X-direction, each Y-axis expansion regions of this plurality of Y-axis expansion regions be adjacent to this plurality of X-axis line part one of them and expand outwardly along this Y direction, the summation of this plurality of X-axis expansion regions area is greater than the summation of this plurality of Y-axis expansion regions area.
3. a light supply apparatus, is characterized in that, this light supply apparatus comprises:
Light source, this light source has light-emitting area and at least one electric contact, this light-emitting area extends along X-direction and has normal direction, this normal direction is the Y direction vertical with this X-direction, this at least one electric contact has junction profile, this junction profile comprises plural corner part and a plurality of line part, and this plurality of line part is connected between this plural corner part; And
Circuit board, this circuit board has at least one welded gasket, and this at least one welded gasket is electrically connected this at least one electric contact, and this at least one welded gasket has face of weld profile, and this welded gasket has overlay region and a plurality of expansion regions;
Wherein, this plurality of line part comprises and is parallel to a plurality of X-axis line part that this X-direction extends and a plurality of Y-axis line parts being parallel to the extension of this Y direction, and this plurality of expansion regions comprises a plurality of X-axis expansion regions and a plurality of Y-axis expansion regions;
When this at least one electric contact overlap corresponding to this overlay region, each X-axis expansion regions of this plurality of X-axis expansion regions be adjacent to this plurality of Y-axis line part one of them and expand outwardly along this X-direction, define this plurality of X-axis expansion regions respectively with the summit that corresponding Y-axis line part spacing maximum is this X-axis expansion regions, each Y-axis expansion regions of this plurality of Y-axis expansion regions be adjacent to this plurality of X-axis line part one of them and expand outwardly along this Y direction, define this plurality of Y-axis expansion regions respectively with the summit that corresponding X-axis line part spacing maximum is this Y-axis expansion regions, the summit of each X-axis expansion regions of this plurality of X-axis expansion regions and to the summation of Y-axis line part spacing being greater than the summit of each Y-axis expansion regions of this plurality of Y-axis expansion regions and the summation of corresponding X-axis line part spacing.
4. a light supply apparatus, is characterized in that, this light supply apparatus comprises:
Light source, this light source has light-emitting area and at least one electric contact, this light-emitting area extends along X-direction and has normal direction, this normal direction is the Y direction vertical with this X-direction, this at least one electric contact has junction profile, this junction profile is made up of plural corner part and the plural line part be connected between this plural corner part, and this plural line part comprises a plurality of X-axis line part; And
Circuit board, this circuit board has at least one welded gasket, this at least one welded gasket is electrically connected this at least one electric contact, this welded gasket has face of weld profile, this welded gasket has overlay region and a plurality of Y-axis expansion regions, with make this junction profile corresponding with this overlay region overlapping time, this junction profile falls in the scope of this face of weld profile, each Y-axis expansion regions of this plurality of Y-axis expansion regions be adjacent to this plurality of X-axis line part one of them and expand outwardly along this Y direction, define this plurality of Y-axis expansion regions respectively with the summit that corresponding X-axis line part spacing maximum is this Y-axis expansion regions,
Wherein, in this Y direction, the distance between this plural corner part and this face of weld profile is less than the distance between this X-axis line part and summit of this Y-axis expansion regions at this plural corner part place.
5. light supply apparatus as claimed in claim 4, it is characterized in that, this at least one welding is paid somebody's debt and expected repayment later has a plurality of X-axis expansion regions, this plural line part also comprises a plurality of Y-axis line part, with make this junction profile corresponding with this overlay region overlapping time, each X-axis expansion regions of this plurality of X-axis expansion regions be adjacent to this plurality of Y-axis line part one of them and expand outwardly along this X-direction, define this plurality of X-axis expansion regions respectively with the summit that corresponding Y-axis line part spacing maximum is this X-axis expansion regions;
Wherein in this X-direction, the distance between this plural corner part and this face of weld profile is less than the distance between this Y-axis line part and summit of this X-axis expansion regions at this plural corner part place.
6. the light supply apparatus as described in any one of Claims 1-4, is characterized in that, this junction profile is L shape, and this face of weld profile is heart-shaped.
7. light supply apparatus as claimed in claim 6, it is characterized in that, this L shape is connected by vertical section and horizontal segment and forms, and this heart is made up of first the second ellipse that is oval and this horizontal segment external of this vertical section external.
8. the light supply apparatus as described in any one of Claims 1-4, is characterized in that, this face of weld profile is to should the part of plural line part be linear, curved or irregular shape.
9. the light supply apparatus as described in any one of Claims 1-4, is characterized in that, this face of weld profile is in order to define the setting area of scolding tin.
10. the light supply apparatus as described in any one of Claims 1-4, is characterized in that, this circuit board has cover layer, and this cover layer has at least one opening, and to expose this at least one welded gasket, the shape of this opening is to should face of weld profile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510918768.1A CN105570736B (en) | 2015-12-11 | Light supply apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510918768.1A CN105570736B (en) | 2015-12-11 | Light supply apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105570736A true CN105570736A (en) | 2016-05-11 |
| CN105570736B CN105570736B (en) | 2018-08-31 |
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