CN100422813C - Lighting device, lamp for liquid crystal display device and liquid crystal display device - Google Patents
Lighting device, lamp for liquid crystal display device and liquid crystal display device Download PDFInfo
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- CN100422813C CN100422813C CNB2005100635316A CN200510063531A CN100422813C CN 100422813 C CN100422813 C CN 100422813C CN B2005100635316 A CNB2005100635316 A CN B2005100635316A CN 200510063531 A CN200510063531 A CN 200510063531A CN 100422813 C CN100422813 C CN 100422813C
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Abstract
The purpose of this invnetion is to enable to easily cope with variation of size of a light emitting device such as a backlight for a liquid crystal display device so as to suppress the manufacturing cost and to ensure stiffness even when the backlight is made large-sized. The backlight is equipped with a light emitting face formation member (A) to form the light emitting face, a base plate (C) to be placed opposite to the light emitting face formation member (A) at interval, a light source (L) disposed between the light emitting face formation member (A) and the base plate (C), and a frame body (B) to which the light emitting face formation member (A) and the base plate (C) are attached and which holds the interval between the light emitting face constructing member (A) and the base plate (C), wherein the frame body (B) is formed by connecting a plurality of separated frame bodies (6A, 6B, 7A, 7B) consisting of extruded materials or drawn materials.
Description
Technical field
The present invention relates to light-emitting device and lamp for liquid crystal display device and liquid crystal indicator.
Background technology
Liquid crystal indicator constitutes (with reference to spy open 2002-258770 communique or spy open 2003-234012 communique) by the back of the body lamp that is used for to this liquid crystal panel irradiates light is installed at liquid crystal panel behind.Lamp for liquid crystal display device has Figure 21 and structure shown in Figure 22.
Illustrated back of the body lamp 100 constitutes by in shell 101 cold cathode ray tube lamp L being housed.The structure of shell 101 is: on the metallic lower frame 102 of U font section, place diffuser plate 103 and optical film 104, and from the top housing metallic upper ledge 105 of optical film 104.
Lamp L is placed on the 102a of bottom surface, is that long side direction is placed some side by side with the direction parallel with side 102b.Each lamp does not support its end, two long limits by the lamp supporter on the both sides of side 102b 106 by being installed in bottom surface 102a.In addition, lamp supporter 106 is generally by the synthetic resin manufacturing.
Summary of the invention
Light-emitting device as the lamp for liquid crystal display device need have the size of corresponding liquid crystal indicator picture dimension.If varying in size of required back of the body lamp, the just necessary size that changes the lower frame 102, upper ledge 105 and the lamp supporter 106 that constitute shell 101 at every kind of back of the body lamp size, must be made lower frame 102, upper ledge 105 and lamp supporter 106 that this size is used.
Particularly, LCD TV is owing to need colorful picture dimension product, even the therefore product of same configuration, according to the back of the body lamp of different pictures size needs different sizes and lower frame 102, upper ledge 105 and the lamp supporter 106 of multiple size.
Constitute the material of the shell of lower frame 102, upper ledge 105 and lamp supporter 106 etc. owing to use the mould manufacturing, therefore during many sizes, need with the mould of the corresponding quantity of quantity of size so that cost significantly improves.For example: the lower frame 102 of common metal system or upper ledge 105 are made by the sheet metal press process, and general resinous lamp supporter is made by injection molding, therefore all need and the corresponding mould of the quantity of size.
But along with the maximization of LCD TV in recent years, the mould that the material of making formation shell is used also maximizes thereupon, and its die cost is huge.
In addition, since the maximization of material, the reduced stiffness of shell.Particularly lower frame 102 easily twists, and easily produces distortion as shown in figure 23.The distortion of lower frame 102 causes the whole distortion of back of the body lamp, and the liquid crystal panel installed surface produces distortion, thereby can't stably keep liquid crystal panel.
For preventing so to twist, can consider to increase the thickness of lower frame 102 materials such as grade or use difficult distortion material.But, adopt these methods all will increase the weight of shell, so require lighting to disagree with back of the body lamp.
In addition, for preventing distortion, if the material of lower frame 102 is changed into materials such as SUS by the aluminium of light weight, then not only cause weight to increase, also lost the good exothermic character that the aluminum lower frame is had, thereby be required to be SUS system lower frame 102 heat liberation board is set in addition, because the increase of heat liberation board causes the bigger increase of weight.
In view of the foregoing, the objective of the invention is to: can be easy to many sizeizations of light-emitting devices such as corresponding lamp for liquid crystal display device, the control cost of manufacture is guaranteed rigidity for maximizing simultaneously.
The present invention is a kind of light-emitting device, it is characterized in that: comprise the light-emitting area component parts that constitutes light-emitting area; Have at interval and relative base plate with the light-emitting area component parts; The light source of between above-mentioned light-emitting area component parts and above-mentioned base plate, placing; Be used to that above-mentioned light-emitting area component parts and above-mentioned base plate are installed and make keep framework at interval between above-mentioned light-emitting area component parts and the above-mentioned base plate, several minutes framework that said frame is made up of extrded material or expanded material links to each other and forms.
Under the situation of this kind formation,, have light-emitting area component parts, base plate and framework as light-emitting device shape fabricating material.In these materials, several minutes framework that framework can be made up of extrded material or expanded material links to each other and forms, if the therefore length of connected minute framework of appropriate regulation just can produce different big or small light-emitting device frameworks.
In addition, divide framework owing to be extrded material or expanded material, so can be from a kind of mould (extrusion die or drawing die; Punch die) framework of acquisition random length.So framework of the multiple length of available a spot of Mold Making.
In addition, a kind of as light-emitting device shape fabricating material uses anti-twist framed structure, even the rigidity of light-emitting area component parts or base plate etc. is not enough, also can fully guarantee whole rigidity.
In addition, as extrded material or expanded material, though can adopt resin extruded material etc., but metal extrded material or metal stretching material are comparatively desirable, the indication metal is comparatively desirable with aluminium, aluminium alloy or magnesium alloy herein.
Said frame uses the angle to connect above-mentioned minute framework of tool connection in its bight comparatively desirable.Though divide the connection between the framework can use modes such as screw, welding, adhesion to carry out, to use the angle to connect tool and connect each minute framework, the precision that improves frame size is comparatively desirable.
Above-mentioned light source is a linear light source, the major part of above-mentioned linear light source is arranged in the back of the body lamp inner space of above-mentioned light-emitting area component parts and the encirclement of above-mentioned base plate, framework had the side surface part that becomes side, above-mentioned back of the body lamp inner space in above-mentioned minute, on this side surface part, for making a part that is in the above-mentioned linear light source in the back of the body lamp inner space can be positioned at said frame, form the light source passage portion of above-mentioned linear light source by usefulness, for avoiding above-mentioned linear light source and blocking above-mentioned light source passage portion, be preferably in this side surface part the reflector plate bigger than above-mentioned side surface part is installed.
About linear light source, its major part is arranged in back of the body lamp inner space, needs to hide the part that the luminous grade of light-emitting area is reduced as brightness lower, long side direction both ends etc.Divide framework to have when becoming the side surface part of carrying on the back side, lamp inner space, form the light source passage portion,, make the part of the above-mentioned linear light source that is arranged in back of the body lamp inner space be positioned at said frame inside, thereby can hide this part by this light source passage portion in side surface part.At this moment, has identical section shape even have the branch framework of side surface part of obstructed light source and the branch framework that has a side surface part of logical light source, the branch framework that has the side surface part of obstructed light source can block not the light source passage portion by reflector plate and carry out correspondence, and the branch framework that has the side surface part of logical light source can carry out correspondence to avoid entering the linear light source in the framework and blocking above-mentioned light source passage portion from back of the body lamp inner space by forming reflector plate, therefore, by minute commonization of framework, can further reduce cost.
Above-mentioned light-emitting area component parts is overlapped by some planar opticses, in above-mentioned minute framework, for suppressing to invade dust between above-mentioned some planar opticses, under the peripheral end state that covers all some planar opticses, it is comparatively desirable that the optics maintaining part that keeps some planar opticses is set.At this, planar optics refers to the light that comes from light source be played the material with optical property of regulation effect as diffuser plate, optical film (diffusion film, lens film, polaroid film etc.) etc.
When overlapping light-emitting area,, will descend, not invade assembly operation between the optics so must there be dust because of luminous grade such as the generation of dim spot etc. because in a single day dust enters between the optics by several so planar opticses.Particularly, the back of the body lamp about liquid crystal is used with display device owing to demanding luminous grade, therefore prevents the necessity height that dust is invaded, and needs to check whether luminous grade is being stipulated more than the grade.
In addition, though can remove at the dust of light-emitting area component parts surface attachment afterwards, the dust that invades between optics then can't be removed as not decomposing the light-emitting area component parts.Therefore, for not allowing dust invade between the optics, must under the high environment of cleanliness such as Clean room, assemble.
For this kind requirement, image pattern 21-traditional structure shown in Figure 23, owing to be the structure of clamping diffuser plate 103 and optical film 104, so the assembling procedure of clamping diffuser plate 103 and optical film 104 by lower frame 102 and upper ledge 105 must carry out under the high cleanliness environment of Clean room etc. by lower frame 102 and upper ledge 105.In addition, carrying out lower frame 102 when being connected with upper ledge 106, need to install lamp supporter 106 on lower frame 102, with lamp supporter 106 supporting light sources L, is as the assembling procedure of the back of the body lamp operation near terminal stage.Therefore, in fact only under the state that the assembling of back of the body lamp is finished, could check luminous grade, efficient is lower.
To this, for said frame, all cover the mode of getting up with peripheral end with some planar opticses, be provided with the optics maintaining part that keeps some planar opticses, if some planar opticses are installed on framework, then become dust and be difficult to invade state between some planar opticses, owing to can carry out luminous grade inspection under this state, efficient is higher.
And light-emitting device of the present invention comprises the rectangle light-emitting area component parts that constitutes light-emitting area; Support the rectangular frame of this light-emitting area component parts on four limits of above-mentioned light-emitting area component parts; Be placed on the light source of the framework inner space that is surrounded by rectangular frame, illumination from above-mentioned light source is mapped to above-mentioned light-emitting area component parts and becomes light-emitting area, this light-emitting device is characterised in that: above-mentioned rectangular frame is several minutes framework that extrded material or expanded material are formed to be linked to each other at right angle, frame bight form, above-mentioned each minute, framework all had the inboard facial of frame oriented inner space, simultaneously should the inboard face upwards state the inclination of framework inner space tiltedly and stretch out, at the long side direction end position of above-mentioned minute framework, form the above-mentioned inboard facial angle fillet portion that is cut.
Support becomes the rectangular frame of the light-emitting area component parts of light-emitting area by the irradiates light from light source, constitute by inboard some minutes facial frameworks respectively with frame oriented inner space, these inboard faces can be used as offside reflection face and need not the material of the offside reflection face that is set in addition thus, but therefore simplification device structure.Connect at right angle, frame bight to have and be arranged to tiltedly and inboard facial each minute of stretching out during framework to the inclination of framework inner space, at the angle connecting portion, between the inboard face of above-mentioned inboard inclination, can interfere with each other, but in the present invention, because on the long side direction end position of minute framework, form cut above-mentioned inboard facial angle fillet portion, therefore divided framework to connect in the bight without interfering with each other.
Above-mentioned inboard facial at above-mentioned minute framework is used for otch that linear light source passes through and forms comparatively desirable by the back processing of extrusion molding or stretch forming.Since the otch that passes through of linear light source by after be processed to form the branch framework that therefore available branch framework that passes through with a kind of Mold Making linear light source and linear light source do not pass through.And, because commonization of mould can reduce cost.
It is desirable to, framework all was with mould extrusion molding of the same race or stretch forming in above-mentioned minute.Because commonization of mould can reduce cost.
The present invention relevant with lamp for liquid crystal display device adopts above-mentioned light-emitting device, and its characteristics are: above-mentioned minute framework has the liquid crystal panel installed surface that is equipped with by from light-struck liquid crystal panel of above-mentioned light-emitting area.
In addition, the present invention relevant with liquid crystal indicator comprises liquid crystal panel and to the liquid crystal indicator of the back of the body lamp of this liquid crystal panel irradiates light, it is characterized in that: adopted above-mentioned light-emitting device as above-mentioned back of the body lamp.
The invention effect
According to the present invention, because the framework of one of material of formation light-emitting device is to constitute by the branch framework that connects by extrded material or expanded material manufacturing, even thereby use a spot of mould also can form the branch framework of multiple length, can make the framework of multiple size so at low cost.
Description of drawings
Fig. 1 is the relevant light-emitting device cut-open view of the 1st embodiment.
Fig. 2 is the exploded perspective view of band light-emitting area framework and base plate.
Fig. 3 is the three-dimensional view that expression divides the framework section shape.
Fig. 4 is the three-dimensional view that the angle connects tool.
Fig. 5 utilizes the angle to connect tool to connect the assembly drawing that divides framework to use.
Fig. 6 is the A-A line cut-open view of Fig. 5.
Fig. 7 is the connected framework of an expression bight enlarged drawing nearby.
Fig. 8 is the assembly drawing of framework and light-emitting area component parts.
Fig. 9 is the local disrumpent feelings planimetric map of 50 inches light-emitting devices.
Figure 10 is the cut-open view of the relevant light-emitting device of the 2nd embodiment.
Figure 11 is the assembly drawing of assembly drawing, branch framework and the offside reflection sheet of light source and base plate.
Figure 12 is the three-dimensional view after the assembling of Figure 11.
Figure 13 is the light-emitting device cut-open view of long limit branch frame side.
Figure 14 is the relevant light-emitting device cut-open view of the 3rd embodiment.
Figure 15 is the stravismus key diagram of the rubber dop of light-emitting device shown in Figure 14.
Figure 16 is the section shape variation of branch framework.
Figure 17 is the section shape variation of branch framework.
Figure 18 is the section shape variation of branch framework.
Figure 19 is the connection structural deformation example of branch framework.
Figure 20 is the connection structural deformation example of branch framework.
Figure 21 is the structural map section of tradition back of the body lamp.
Figure 22 is the lower frame of expression tradition back of the body lamp and the three-dimensional view of lamp supporter.
Figure 23 is the three-dimensional view of the lower frame distortion of expression tradition back of the body lamp.
Symbol description
1 light-emitting device (back of the body lamp)
2 liquid crystal panels
3 diffuser plates (optics)
4 optical films (optics)
6A divides framework in long limit
6B divides framework in long limit
The 7A minor face divides framework
The 7B minor face divides framework
15 maintaining parts (optics maintaining part)
17 jiaos connect tool
26 embed with notch (light source passage portion)
50 light source passage portion
A light-emitting area component parts
The B framework
The C base plate
L light source (linear light source)
S back of the body lamp inner space
Embodiment
Below with reference to the accompanying drawings, the light-emitting device that the present invention is relevant with embodiment is described.But the light-emitting device in this explanation is used lamp for liquid crystal display device such as LCD TV.
Fig. 1-Fig. 9 represents the light-emitting device relevant with the 1st embodiment (back of the body lamp) 1, in illustrated light-emitting device 1, liquid crystal panel 2 is installed and is constituted liquid crystal indicator (LCD TV).This light-emitting device 1 be disposed light source L in the behind of the diffuser plate 3 that constitutes light-emitting area, be so-called full run-down type back of the body lamp.
As depicted in figs. 1 and 2, the framework B of the peripheral end that this light-emitting device 1 comprises the light-emitting area component parts A that is arranged in light source L face side (at Fig. 1 upside) and constitutes light-emitting area, be arranged in light-emitting area component parts A and be positioned at the base plate C of light source L rear side (at Fig. 1 downside) forms the shell of making light-emitting device 1 profile by these materials A, B, C.
As shown in Figure 1, as light-emitting area component parts A, have diffuser plate 3 and optical film 4, its structure is the diffuser plate 3 and the optical film 4 of overlapping several planar opticses.
In addition, light-emitting area component parts A also can only constitute with diffuser plate 3 or optical film 4.And, as optical film 4, except that above-mentioned, also can adopt the film that formed polaroid film, illumination large, oblong sheet of silk with an appropriate message attached etc., the number of use does not have particular restriction yet.
As shown in Figure 2, framework B forms rectangular box-like, can support the periphery end, 4 limits of rectangle light-emitting area component parts A.This framework B divides framework 6A, 6B and 2 minor faces to divide framework 7A, 7B to connect and compose by 2 long limits.
So the branch framework of section shape can pass through to heated billet pressurization, and the extrusion process of extruding from the outlet mould (punch die) identical with section shape shown in Figure 3 obtains.In the present embodiment, growing the limit divides framework 6A, 6B and minor face to divide framework 7A, 7B all to be formed by same mould.
In addition, in the branch framework that obtains by extrusion process, as required, implement back processing as the cutting processing such as formation of screw, otch.
So, owing to be extrusion process, commonization of mould can be realized with dividing framework 6A, 6B and minor face with dividing framework 7A, 7B all can use same mould to form in therefore long limit.
And, owing to be extrusion process, can obtain the branch framework of Len req, so can use the branch framework of common Mold Making all lengths according to the size of light-emitting device 1 (back of the body lamp).Particularly, full run-down type back of the body lamp, regardless of its size, the situation that its thickness is identical is more, need not to change the framework self structure, so only adjust the length of dividing framework, gets final product corresponding various sizes, thereby can significantly reduce die cost.
Therefore, as LCD TV, when the light-emitting device of using as the abundant commodity of picture dimension (length and width) uses, also can not need append how many costs and simple corresponding.
As shown in Figure 3, divide framework 6A, 6B, 7A, 7B be as section substantially the hollow cylinder of platform shape form, have face portion 10, the base plate C side of liquid crystal panel 2 sides (light-emitting area component parts A side) back side portion 11, become back of the body lamp inboard inboard facial 12 and become the outside face 13 in the back of the body lamp outside.But inboard face 12 is inclined to the more close back of the body lamp of rear side inboard.In addition, the part of back side portion 11 sides of outside face 13 is more given prominence to rear side than back side portion 11, becomes the location projection of base plate C.
In addition, as back of the body lamp internal space S, in this internal space S, place light source L by facial 12 spaces of being enclosed of light-emitting area component parts A, base plate C and inboard.
On minute framework 6A, a 6B, 7A, 7B, formed the ditch shape maintaining part 15 that is used for inserting light-emitting area component parts A in inboard facial 12 face side position.That is: as Fig. 1 and shown in Figure 3, formed the support or oppose facial 15a of the 1st support of the light-emitting area component parts A that the outer side of lamp (Fig. 3 left side) extends from inboard facial 12 face side end 12a.In addition, support facial 15a and have predetermined distance and the relative the 2nd to support facial 15b to form with the 1st as the part of above-mentioned face portion 10, peripheral end by insert light-emitting area component parts A in two ditches that support between facial 15a, the 15b can make maintaining part 15 seize light-emitting area component parts A on both sides by the arms.Two support facial 15a, 15b pass through to connect at the inboard face 15c of the ditch inboard of maintaining part 15, and this inboard face 15c becomes prevention light-emitting area component parts A to the inboard mobile face of ditch.Under the assembled state of the framework B that light-emitting area component parts A is installed, between the side end face A1 of the inboard face 15c of ditch shape maintaining part 15 and light-emitting area component parts A, there is the gap, can allow the expansion to the face direction of diffuser plate 3 and optical film 4.In addition, diffuser plate 3 and optical film 4 are owing to just being inserted into ditch shape maintaining part 15, so also can allow the contraction of the face direction of diffuser plate 3 and optical film 4.That is to say that maintaining part 15 becomes the supporting construction of the expansion contraction of easy corresponding light-emitting area component parts A.
Rectangular-shaped framework B utilizes connection tool 17 in angle shown in Figure 4 that the end of 4 branch framework 6A, 6B, 7A, 7B is connected to each other, and connected mode as shown in Figure 5.
It is metal die casting product such as aluminium that the angle connects tool 17.This angle connects tool 17 and has the 1st inserted sheet 17b and the 2nd inserted sheet 17c that the front view in the bight that becomes rectangular frame B stretches out for the connection tool main body 17a of square (rectangle) shape, from this connection tool main body 17a.Two inserted sheet 17b and 17c extend to 90 ° different directions, by to inner these an inserted sheets 17b and the 17c of inserting of minute framework 6A, 7A, can make the connection that meets at right angles of 2 branch frameworks.At this,, therefore can be easy to accurately connect the branch framework owing to be to carry out chimeric syndeton to the inner inserted sheet 17b, the 17c that connect tool 17 of inserting of minute framework.
In addition, insert that limit 17b, 17c have and face portion 10 and back side portion 11 between the interval identical distance, under the state of being clamped by face portion 10 and back side portion 11, be inserted into till the inboard of outside face 13 contacts.
In addition, be formed with screw 18 on inserted sheet 17b, the 17c, be used to insert screw in conjunction with dividing framework and inserted sheet to use.In addition, on the long side direction both ends of each minute framework 6A, 6B, 7A, 7B also at inserted sheet 17b, be formed with screw 19 when 17c is inserted into and on the above-mentioned screw 18 corresponding to positions.And, screw 19 after the extrusion process as after be processed to form.
As mentioned above, 4 branch framework 6A, 6B, 7A, 7B are inserted into 4 angles and connect among each inserted sheet 17b, 17c of tool 17, by being screwed branch framework 6A, 6B, 7A, 7B and inserted sheet 17b, 17c, constitute rectangular frame B as shown in Figure 2. Divide framework 6A, 6B, 7A, 7B by connecting, constitute firm rectangular frame, obtain the structure that is difficult to twist.In addition, the bight of framework B connects by connecting tool 17, can further prevent the distortion of framework B, even obtain using light-duty aluminium in the present embodiment also to be difficult to the structure of twisting.
And, about the light-emitting device 1 of present embodiment, owing to be difficult to the installed surface 10 that twist structured framework B has liquid crystal panel 2, the installed surface 10 of liquid crystal panel 2 become be difficult to distortion, therefore can stably support liquid crystal panel.
At this, about the inboard face 12 of minute framework,, the branch framework in extrusion process state former state is connected with the right angle if attempt because stretch out the lamp inboard of supporting or opposing, then inboard facial 12 long side direction end interferes with each other with the long side direction end of inboard face 12 of other minutes framework, causes and can't connect.So inboard facial 12 the long side direction both ends C of branch framework 6A, 6B, 7A, 7B is as shown in Figure 5 by oblique excision, at inboard facial 12 the long side direction two ends formation angle 12c of fillet portion.
Fig. 6 represents the branch framework cut-open view of cut part.For avoid with other minutes framework interfere with each other a part of inboard facial 12 and the part cut (dotted portion of Fig. 6) of back side portion 11.But the excision of C is to carry out as the back processing of extrusion process.
Then, branch framework 6A, the 7A that the right angle links to each other is connected as shown in Figure 7 by butt joint mutually between the angle fillet portion 12 that will excise back formation.
Return Fig. 1 again, minor face divides framework 7A, 7B, divides framework 6A, 6B different with long limit, has the function of maintenance as cold cathode lamp (linear light source) L of light source.Cold cathode lamp L herein is straight tube-like, has electrode at the long side direction two ends, for covering its electrode dop (rubber dop) 22 has been installed.And by in the dop 22, wiring part 23 extends from the lamp electrode, in the end of wiring part 23, and connector mounting 24.It is on the transducer 32 that this connector 24 is connected to the light source ignition device.
At this, the embedding of rubber dop also is the light source passage portion that light source L passes through with notch 26, because the part of light source L (long side direction both ends) is positioned at framework B.
By allowing rubber dop 22 be embedded into this embedding with in the notch 26, the long side direction two ends of light source L keep (with reference to Fig. 8) by relative branch framework 7A, 7B.Therefore, the major part in the middle of the long side direction of light source L places back of the body lamp internal space S, and the part of light source L (long side direction two ends) places the inside of framework B.
In addition, the also reliably long limit of light source L divides framework 6A, 6B side to support.
And, when light source L is the linear light source of the non-straight tube-like of U font etc., utilize light source passage portion 26, can make the bend of light source L place the inside of framework B.
Inboard facial 12 surface as above-mentioned formation is formed with the offside reflection face 28 of reflection from the light of light source L.As offside reflection face 28, become the face that diffusely reflecting surface or fully reflecting surface (border face reflecting surface) have adopted white or metal for making it.Be specially: white reflector plate (zone of reflections) 28 is pasted on the surface inboard facial 12, perhaps inboard facial 12 surperficial painted white etc.
When pasting reflector plate 28, in the present embodiment, this reflector plate 28 forms by the shape of inner side surface portion 12.That is: divide framework 7A, 7B for the embedding that has formed rubber dop 22 with the minor face of notch 26, reflector plate 28 forms has the corresponding shape that embeds with the otch of notch 26, divide framework 6A, 6B for not embedding with the long limit of notch 26, need not on reflector plate 28, to form this otch.
In addition, in the time inboard facial 12 surface can being used as the reflecting surface former state, need be in order not obtain the processing of reflecting surface 28.
The assembly drawing of Fig. 8 representational framework B and the light-emitting area component parts A band light-emitting area framework after by overall package.
At first, in 4 branch framework 6A, 6B, 7A, 7B, 3 branch framework 6A, 7A, 7B connect into the コ font, as shown in the figure, form open framework on one side.Under this kind state, insert light-emitting area component parts A (diffuser plate 3 and optical film 4) from the open end of the ditch shape maintaining part 15 of minute framework 7A, 7B, the peripheral end of the direction of insertion tip side of light-emitting area component parts A is slided to till the ditch shape maintaining part 15 that is inserted into branch framework 6A.
Then, connect tool 17,17, connect remaining minute framework 6B and finish framework B, make light-emitting area component parts A remain on unlikely coming off among the framework B by using the angle.Like this, framework B has just had the function that keeps light-emitting area component parts A.In addition, be inserted under the state of ditch shape maintaining part 15 in peripheral end light-emitting area component parts A four limits, only connect and divide framework to form framework B, can keep light-emitting area component parts A, thereby need not for the required other materials of light-emitting area component parts A is installed on framework B, so but simplified construction.
And, about ditch shape maintaining part (optics maintaining part) 15, owing to be that state with the peripheral end that covered all planar opticses (diffuser plate 3, optical film 4) four limits keeps, prevented that therefore dust from invading between diffuser plate 3 and the optical film 4 from the peripheral end of diffuser plate 3 and optical film 4.Therefore, assembled framework B after, the possibility that dust is invaded between diffuser plate 3 and the optical film 4 is less, assembly operation after this (base plate C etc. is installed) can carry out in the lower environment of cleanliness.In addition, in Fig. 8, be illustrated in light source L has been installed on the framework after, the state of light-emitting area component parts A is installed, but light source L can install after light-emitting area component parts A installs also.
And, after light-emitting area component parts A has been installed on the framework B, can whether have dust to invade between diffuser plate 3 and the optical film 4 the grade inspection of (is between the optical film) when being provided with a plurality of optical film 4.When this checks, the light source L that uses of back of the body lamp need be installed, can be coming self-check to shine whether check that because dust and the decline of luminous grade, inspection can simply be carried out to light-emitting area component parts A with the light in light source.Then, the product of this passed examination is delivered to after this assembling procedure, arrive the stage that final assembling procedure finishes like this, can reduce the probability of happening of defective products.
In addition, when in maintaining part 15, inserting light-emitting area component parts A, divide framework need not connect 3, as long as under 2 continuous states.Certainly, the connection that divides framework with insert light-emitting area component parts A to maintaining part 15 and also can carry out simultaneously.
Turn back to Fig. 1 and Fig. 2 again, on the framework B of light-emitting area of assembling as shown in Figure 8 and band light source, base plate C is installed.On the surface of base plate C,, be provided with scattered reflection sheet 30 for constituting the bottom reflection face of reflection from the light of light source L.This base plate C and scattered reflection sheet 30 constitute bottom reflection face constituent material.In addition, also can be by obtaining the bottom reflection face to base plate C external coating white.
Base plate C is made of the high metallic sheet materials such as aluminium of exothermicity, and base plate C itself is crooked easily, but since framework B enough rigidity are arranged, even base plate C itself is crooked easily, by be installed in prevent on the framework B crooked.Therefore,, also can use the lower sheet materials of rigidity such as synthetic resin board and thin slice,,, can guarantee exothermicity,, also need not to be provided with in addition heat liberation board even maximize by good materials of exothermicity such as use aluminium as present embodiment as base plate C.
And, even light-emitting device 1 maximizes, because the rigidity height of framework B, and need not to improve rigidity with thickening base plate C, so, even maximize (for example: the size of corresponding 50 inches LCD TV maximizes), also can suppress the increase of weight.
In addition, be used for the converter circuit of lamp source L 32 in the installation of the inboard of base plate C.But converter circuit 32 also can be installed on the framework B.
As shown in Figure 2, on base plate C and reflector plate 30 as bottom reflection face constituent material, the wiring part 23 that is formed with light source L passes the otch 34 of usefulness from the surface of bottom reflection face constituent material to its inside, passing to these otch 34 under the state of wiring part 23, base plate C and reflector plate 30 usefulness screws 36 are installed in framework B side, finish light-emitting device 1 (back of the body lamp) (with reference to Fig. 9).And, on base plate C and reflector plate 30, form screw 37, on framework B, also form screw with these screw 37 correspondence positions.
By framework B and base plate C with combinations such as screws, further improve the shell whole rigidity.
On the back of the body lamp of finishing 1, liquid crystal panel 2 is installed in the face portion (liquid crystal panel installed surface) of framework B.Liquid crystal panel 2 is installed on the framework B across liner 40, obtains liquid crystal indicator.About back of the body lamp 1, owing to guaranteed rigidity by framework B, and the distortion of liquid crystal panel installed surface 10 is few, and liquid crystal panel 2 can stably be installed.
And, as back of the body lamp 1,, base plate C prevents distortion even comparing Bao Yeke according to present embodiment, therefore adopt the good aluminium of exothermicity as base plate C, suppressed the weight increase, and also simplify the structure.
Particularly, in the back of the body lamp 1 of present embodiment, because framework B has the multiple functions such as interval maintenance function between support function, light source L support function, base plate C support function, light-emitting area component parts A and the base plate C of liquid crystal panel support function, light-emitting area component parts A, so the component number amount is few, the structure of other materials (base plate C etc.) also becomes simple.
Figure 10-Figure 13 represents the light-emitting device (lamp for liquid crystal display device) 1 that the 2nd embodiment is relevant.About the relevant light-emitting device 1 of the 2nd embodiment, to compare with the correlative of the 1st embodiment, its main difference is the installation site of the section shape and the light source L of branch framework.Institute's abridged part is identical with the 1st embodiment in the following description.
On the branch framework of the 2nd embodiment, identical with the 1st embodiment, exist minor face to divide framework and long limit to divide framework, still, two fens frameworks here all form identical shaped except that the length of long side direction.
Promptly, the inboard face 12 of the branch framework 6A of the 1st embodiment, 6B, 7A, 7B, it extremely touches the length of base plate C (bottom reflection face 30) substantially to the length extrusion process of base plate C side direction, as processing after this, minor face at the 1st embodiment divides on the inboard face 12 of framework 7A, 7B relatively, formed as the rubber dop of light source passage portion and embedded with notch 26, and not the long limit of the 1st embodiment divide framework 6A, 6B inboard facial 12 on this notch 26 of formation.According to having or not of these notchs 26, the shape of two minutes framework 6A, 6B, 7A, 7B is different.
To this, in the branch framework 6A of the 2nd embodiment, 6B, 7A, 7B, minor face divides framework 7A, 7B and long limit to divide framework 6A, 6B same, and inboard facial 12 all only extend than on the high position of light source L (rubber dop 22).In Figure 10, minor face divides the inboard face 12 of framework 7A, 7B, and its length to base plate C direction is suppressed at the degree that touches rubber dop 22, and it also is same length (with reference to Figure 13) that inboard facial 12 of framework 6A, 6B divided on long limit.
Because the minor face of formation divides inboard face 12 weak points of framework 7A, 7B, between inboard face 12 and base plate C (bottom reflection sheet 30), not other formation otch, and guarantee the light source passage portion 50 (with reference to Figure 12) of light source L by usefulness.This light source passage portion 50 can be passed through light source L, between each light source L, exists as the gap.
On inboard facial 12 surface, the offside reflection sheet 28 that reflected light is used is by stickups such as double-sided belts.This offside reflection sheet 28 forms and not only covers inboard facial 12 surface, also can avoid the shape of light source L and obstruction light source passage portion 50.
That is to say, be not only and cover inboard face 12, also in order to cover light source passage portion 50, the amplitude L2 of offside reflection sheet 28 forms also bigger than inboard facial 12 amplitude L1, specifically, offside reflection sheet 28 is formed into length basic and that base plate C (bottom reflection sheet 30) joins.That is to say that offside reflection sheet 28 has the amplitude (with reference to Figure 12,13) with inboard facial 12 same degree of the 1st embodiment.
In addition, on inboard facial 12 the offside reflection sheet 28 of the long side direction of light source L residing minute framework 7A, 7B, formed the otch 52 (with reference to Figure 11, Figure 12) that is used to avoid light source L.The amplitude L3 of the reflector plate 28 of these otch 52 place parts is with comparatively desirable greater than inboard facial 12 amplitude L1.It is comparatively desirable promptly to satisfy L1≤L3＜L2.
On the other hand, branch framework 6A, the 6B at the long side direction two ends that do not have light source L inboard facial 12 on owing to do not need, so do not form above-mentioned otch 52 (with reference to Figure 13).
According to this sample, the minor face of the 2nd embodiment divide framework 7A, 7B inboard facial 12 on, do not need to be used to form the operation of the otch of using by (or fixing) light source L 26 as the back processing of extrusion process.And the existence of light source L divides framework 7A, 7B and long limit to divide on framework 6A, the 6B at minor face, and the shape of reflector plate 28 that can be by changing easy processing is come corresponding, therefore can reduce cost of manufacture.
In addition, in the light-emitting device 1 relevant with the 2nd embodiment, light source L is installed on the base plate C.That is: as Figure 10, shown in Figure 11, on base plate C, end, long side direction two ends from light source L, stand to have and become the sidewall that light source keeps wall 54, by inserting ditch 54a to the rubber dop 22 that keeps at this light source forming on the wall 54, insert the rubber dop 22 at light source two ends, the long side direction two ends of light source L are remained on the base plate C.
And, on the sidewall that becomes light source maintenance wall 54, form screw 54b, be used for by not shown screw, framework B and base plate C are fixed.On the outside face 13 of minute framework 6A, a 6B, 7A, 7B, on the position corresponding, also form screw 13a with above-mentioned screw 54b, the outside of framework B facial 13 is fixed with the sidewall 54 of base plate C.And the sidewall 54 of base plate C not only can be located at the base plate short brink at the long side direction both end sides place of light source L, also can be located at the long side of base plate, and the sidewall 54 of this long side and the outside face 13 of framework B also available screw etc. are fixing.
And in the branch framework of the 2nd embodiment, the face side of outside face 13 is more outstanding than face portion 10, becomes the projection of determining liquid crystal panel 2 positions.
Figure 14 and Figure 15 represent the light-emitting device (lamp for liquid crystal display device) 1 relevant with the 3rd embodiment.What the light-emitting device relevant with the 3rd embodiment and the 1st or the 2nd embodiment were relevant compares, difference mainly be section shape, the rubber dop of branch framework installation constitution, be the installation constitution of linear light source.The abridged part is identical with the 1st or the 2nd embodiment in the following description.
In the 2nd embodiment, go up formed rubber dop 22 to the sidewall (light source keeps wall 54) at the long side direction that stands on base plate C (long side direction of light source L) both ends and insert the rubber dop 22 that inserts the light source two ends among the ditch 54a, the long side direction two ends of light source L are remained on the base plate C, but in the 3rd embodiment, by in the hole that on base plate C, forms, embedding the part of rubber dop 22, light source L is remained on the base plate C.That is: on the bottom surface of rubber dop 22 (with base plate C abutted surface), as shown in figure 15, be provided with related projection 60, this association projection 60 embedded base plate C go up in the associated apertures 61 that forms, can determine and keep the position at the long side direction two ends of light source L thus.Above-mentioned related projection 60, its horizontal section presents convex, and corresponding therewith, and the shape of above-mentioned associated apertures 61 also is convex.Therefore, can prevent that rubber dop 22 from rotating in surface level.The horizontal cross-section shape of related projection 60 and the shape of corresponding associated apertures 61 therewith, except that above-mentioned convex, also semicircle, ellipse, rectangle, polygon etc.
Divide the outside of the outside face 13 of framework 7A, 7B at minor face, form 2 ditches 62 along long side direction, the prominent bar of being clamped by these two ditches 62 63 plays the heat emission fan effect that discharges the heat that light source L sent out to the outside.The quantity of prominent bar 63 is not limited to 1, also more than 2.In the 3rd embodiment, in order to form above-mentioned prominent bar 63, (carry on the back lamp internal space S side) to the inside near face portion 10 side ends of outside face 13 and stretch out, constitute extension 13a.
From support facial 15a below, below be provided with the location with rib 64, the top 22a of above-mentioned rubber dop 22 is crossed in inboard simultaneously facial 12 lower end, be set at base plate C side, utilize bottom, the following 13b of extension 13a and the related projection 60 of above-mentioned rubber dop 22 of above-mentioned location with rib 64, inboard face 12, determine rubber dop 22, i.e. the position of light source L.In addition, the location with the lower surface 64a of rib 64 with above the rubber dop 22 between the 22a, below extension 13a 13b and above the rubber dop 22 between the 22a, and medial surface 22b and outside, inboard facial 12 bottom (face of back of the body lamp internal space S and opposition side) at rubber dop 22 between, form plurality of gaps respectively, set the size that above-mentioned rubber dop 22 and minor face divide framework 7A, 7B.Because the formation in this gap even rubber dop 22 expands owing to the heat of light source L, also can absorb relevant expansion.Its result can prevent because 22 inboard facial 12 lamp internal space S side extruding of supporting or opposing of dilated rubber dop make the generation that is attached to the problems such as reflector plate 28 distortion on the above-mentioned inboard face 12.
Identical with the 2nd embodiment, the face side of outside face 12 is more outstanding than face portion 10, and formation is determined the projection that the position of liquid crystal panel 2 is used.
In addition, the 65th, the cover of covering light-emitting device bottom surface (with the face of light-emitting area opposition side) side can be used for example good making such as aluminium of exothermicity.About this cover 65,, in the 1st embodiment light-emitting device relevant, configuration is arranged also with the 2nd embodiment though be omitted in the drawings.
Figure 16 represents the section shape variation of branch framework.About a minute framework, the shape of the branch framework of shape and the 1st embodiment is such shown in Figure 16 (a), and for guaranteeing rigidity, it is close-shaped comparatively desirable that its section is.More particularly, it is better to divide framework to be cardinal principle quadrangular barrel shape, and it is better to be cardinal principle platform shape tubular.
At this, about the section shape of Figure 16 (a), face portion 10 can play the effect of the supporting surface of light-emitting area component parts A and/or liquid crystal panel 2, and the effect of the supporting surface of base plate C and/or light source ignition device (transducer 32) can be played by back side portion 11.The effect of the face of usefulness at interval between light-emitting area component parts A and the base plate C of keeping is played in the outside facial 13 and/or inboard facial 12.Inboard facial 12 play the effect of the offside reflection face of back of the body lamp internal space S.
Therefore, the branch frame shape of shape and the 1st embodiment shown in Figure 16 (a) is comparatively desirable with the above-mentioned functions with face portion 10, back side portion 11, inboard face 12 and outside face 13.
As section is close-shaped branch framework, shown in Figure 16 (b), can be triangle tubular substantially.The branch framework of triangle tubular can be guaranteed to divide framework high rigidity than quadrangular barrel shape.Under the situation of Figure 16 (b), divide framework to form the section triangle by back side portion 11, inboard face 12, the outside facial 13.Face portion 10 is provided with from the intersection point of inboard face 12 and outside face 13.This face portion 10 can play the effect of facial liquid crystal panel 2 supporting surfaces in the outside, and this face portion 10 between, be to form the ditch shape maintaining part 15 of light-emitting area component parts A, from inboard facial 12 Width pars intermedia supporting surface 15a is set.
As section is close-shaped branch framework, can adopt above-mentioned polygon tubular article in addition.
Divide framework also can be as Figure 16 (c) (d) shown in shape and the 2nd embodiment the branch frame shape like that, section is for close-shaped, cardinal principle コ word shape for example.That is: face portion 10, back side portion 11, inboard facial 12 and outside face 13 in, can be formed with the shape of 3 faces, for example: shown in Figure 16 (c), can form the shape of no back side portion 11.And shown in Figure 16 (d), can form does not have inboard facial 12 shape.In addition, in Figure 16 (d), become the inboard face 12 of offside reflection face, as required,, guaranteed to get final product by installing and dividing framework different materials.
Under the situation of cardinal principle コ word shape, because 3 faces are arranged, so even section shape does not seal, also can guarantee rigidity relatively, it is more multi-functional that framework is had, comparatively desirable.
Also can make the branch framework possess face portion 10, back side portion 11, inboard facial 12, and the outside facial 13, and make it be the shape (with reference to Figure 17 (a)) that section that part is cut off state does not seal.
Divide framework as Figure 16 (e) (f) shown in shape, also L word shape (section is not for close-shaped) substantially.That is: in face portion 10, back side portion 11, inboard face 12 and outside face 13, the shape of two faces can be arranged.
For example: shown in Figure 16 (e), can be has face portion 10 and inboard facial 12 shape.At this moment, light-emitting area component parts A can be installed on the face portion 10, and base plate C can be installed on inboard facial 12.And base plate C can be by prolonging base plate C itself or between other materials, being installed on the face portion 10.
In addition, can shown in Figure 16 (f), be the shape that the outside facial 13 and back side portion 11 are arranged.At this moment, light-emitting area component parts A can be installed on the outside facial 13, and base plate C can be installed in back side portion 11.And, become the inboard facial 12 of offside reflection face, can by being installed, the material different with the branch framework obtain as required.
Dividing the shape of framework shown in Figure 16 (g), can be three forked (section is not close-shaped).That is: in face portion 10, back side portion 11, inboard facial 12, outside face 13, can 3 faces of three forked formation, specifically, as shown in the figure, can prolong from the point of crossing of front 10 that L word shape constitutes and outside face 13 and be provided with inboard facial 12.
As previously discussed, the branch framework has the face more than 2 or 2 in face portion 10, back side portion 11, inboard face 12, the outside face 13, can improve the rigidity of framework B like this, makes the framework functions variation simultaneously.
Figure 17 represents other variation of branch framework section shape.Be provided with on the branch framework here to the inner outstanding interior prominent portion 70 that establishes of minute framework.The prominent portion 70 that establishes can be located on the arbitrary face in face portion 10, back side portion 11, inboard facial 12, the outside face 13 in this, Figure 17 (a) (b) in, it is located on the outside facial 13, in Figure 17 (c), it is located on inboard facial 12.
In prominent establish portion 70 and play the rib effect, can improve the rigidity of branch framework.In addition, interior prominent establishing between portion 70 and other the face 10,11,12,13 forms and inserts the insertion ditch that the angle connects inserted sheet 17b, the 17c of tool 17, and it is more solid in the connection between each minute framework to connect tool 17 by the angle.
Inserted sheet 17b, 17c that the angle that illustrates in the 1st embodiment connects tool 17 are flat, shown in Figure 17 (c), also can be section and are L word shape substantially.Inserted sheet 17b, 17c are section substantially during L word shape, and the state that connects the branch framework that tool 17 connects with the angle is more firm.
And inserted sheet 17b, 17c also can be section and are コ word shape substantially.When inserted sheet 17b, 17c were section cardinal principle コ word shape, the state that connects tool 17 connections with the angle was more firm.
So, inserted sheet 17b, 17c are inserted into face 10,11,12,13 more than 2 or 2 and join, can further prevent the distortion of framework B like this,, more can prevent the distortion of framework B if be inserted into when joining with top 10,11,12,13 with 3 or 3.
Figure 18 represents other other variation of branch framework section shape.In the branch framework here, be provided with to the outside outstanding evagination of minute framework and establish portion 80.This evagination is established any one side that portion 80 can be located at face portion 10, back side portion 11, inboard face 12, outside face 13, and as shown in figure 18, it is arranged on the outside facial 13.This evagination is established the effect that the heat release fan plays in portion 80, can improve the heat release function.
Figure 19 and Figure 20 represent to connect between branch framework 6A, the 7A variation of structure, and these syndetons are not use the angle to connect tool 17 to connect branch framework 6A, 7A.Figure 19 represent to cut sth. askew long side direction end of branch framework 6A, 7A, the structure that butt joint between the branch frame ends face of having cut sth. askew is connected.By butt joint connects between the framework end face dividing,, can prevent that also the opening of the long side direction end face of branch framework 6A, 7A from exposing even need not connect tool 17.
The formation that the long side direction end that Figure 20 represents branch framework 6A, 7A connects with the former state of right angle cuts.By right angle cuts, the comparable raising dimensional accuracy of cutting sth. askew.In addition, connect right angle cuts the branch frame ends because a certain minute framework end face will expose, expose for preventing this, the inboard branch framework that inserts the opposing party of the branch framework of Xiang Yifang connects into each minute framework end face by other minutes form of blocking of framework.In addition, the end of the branch framework 7A of the side of being inserted into for can inserting the opposing party's branch framework 6A, and has excised inboard facial 12 etc.
The invention is not restricted to above-mentioned embodiment.For example, each minute framework that constitutes 1 framework B can be produced from an extrusion die (punch die), and is also produced from 2 or 3,4 extrusion dies.That is: each minute framework that constitutes 1 framework B can be made with common mould, and also available different mould is made.
Divide framework also can form by stretch forming.In addition, divide framework also can to form by the extrusion molding of synthetic resin.
Further, as long as the interval of the framework B of Zhan Shiing with the support function of light source L, the support function of light-emitting area component parts A (diffuser plate keeps function, optical film to keep function), base plate C support function, light-emitting area component parts A and base plate C keeps function, the function as offside reflection face 28, the support function of liquid crystal panel 2, transducer to keep any one function among the function here.
In addition, in the disclosed technical characterictic of this instructions, except that the technical characterictic of in claims, putting down in writing (the particularly technical characterictic of independent claim), also comprise the many contents that can utilize separately in addition.In the disclosed in this manual in other words technical characterictic, be necessary feature, but see it is the situation of feature arbitrarily from other viewpoints even also there is the record angle of accessory rights claim to see.
For example, the light-emitting area component parts A support function of framework B, except that the interval maintenance function of light-emitting area component parts A and base plate C, also can utilize separately, the possibility of this independent utilization can know clearly from the technical meaning of instructions record and those of ordinary skills' technology general knowledge.
Claims (8)
1. light-emitting device is characterized in that:
Comprise
Overlap and constitute the light-emitting area component parts of light-emitting area by some planar opticses;
Have at interval and relative base plate with the light-emitting area component parts;
The linear light source of between above-mentioned light-emitting area component parts and above-mentioned base plate, placing;
Has several minutes framework and be used to that above-mentioned light-emitting area component parts and above-mentioned base plate are installed and make between above-mentioned light-emitting area component parts and the above-mentioned base plate keep framework at interval that constitutes by extrded material or expanded material; And
Be provided with along the angle link of protuberance of perisporium engaging of above-mentioned several minutes framework,
Above-mentioned minute framework has the side surface part of the side that becomes the back of the body lamp inner space that is surrounded by above-mentioned light-emitting area component parts and above-mentioned base plate, is formed for being positioned at the light source passage portion that the above-mentioned linear light source of above-mentioned back of the body lamp inner space passes through in above-mentioned side surface part,
And, framework had optics maintaining part and liquid crystal panel installed surface in above-mentioned minute, wherein above-mentioned optics maintaining part all covers the mode of getting up with the peripheral end with above-mentioned some planar opticses and keeps above-mentioned some planar opticses, so that suppressing dust invades between above-mentioned some planar opticses, above-mentioned liquid crystal panel installed surface is installed liquid crystal panel, so that from the rayed of above-mentioned light-emitting area on liquid crystal panel
Said frame by above-mentioned several minutes framework use above-mentioned angle link to link to each other to form.
2. the light-emitting device described in the claim 1 is characterized in that:
The major part of above-mentioned linear light source is arranged in above-mentioned back of the body lamp inner space,
For avoiding above-mentioned linear light source and stopping up above-mentioned light source passage portion, the reflector plate also bigger than above-mentioned side surface part is installed in this side surface part.
3. light-emitting device is characterized in that:
Comprise:
Overlap and constitute the rectangle light-emitting area component parts of light-emitting area by some planar opticses;
Has several minutes framework and support the rectangular frame of this light-emitting area component parts on four limits of above-mentioned light-emitting area component parts that constitutes by extrded material or expanded material;
Be placed on the linear light source of the framework inner space that is surrounded by rectangular frame; And
Be provided with along the angle link of protuberance of perisporium engaging of above-mentioned several minutes framework,
Illumination from above-mentioned linear light source is mapped to above-mentioned light-emitting area component parts and becomes light-emitting area,
Above-mentioned rectangular frame above-mentioned several minutes framework use link right angle, above-mentioned angle to link to each other to constitute in the frame bight, above-mentioned each minute, framework had the inboard facial of frame oriented inner space respectively, simultaneously should the inboard face upwards state the inclination of framework inner space tiltedly and stretch out
At the long side direction end position of above-mentioned minute framework, form the above-mentioned inboard facial angle fillet portion that is cut.
4. the light-emitting device described in the claim 3 is characterized in that:
Above-mentioned inboard facial at above-mentioned minute framework is used for otch that linear light source passes through and is forming by the back processing of extrusion molding or stretch forming.
5. each described light-emitting device in the claim 1～3 is characterized in that:
Framework was by equal dies extrusion molding or stretch forming in above-mentioned minute.
6. each described light-emitting device in the claim 1～3 is characterized in that:
Framework was rectilinear form in above-mentioned minute.
7. a lamp for liquid crystal display device is characterized in that, has adopted each described light-emitting device in the claim 1～6.
8. liquid crystal indicator comprises liquid crystal panel and to the back of the body lamp of this liquid crystal panel irradiates light, it is characterized in that:
As above-mentioned back of the body lamp, adopted each described light-emitting device in the claim 1～6.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004123472 | 2004-04-19 | ||
| JP2004-123472 | 2004-04-19 | ||
| JP2004123472 | 2004-04-19 | ||
| JP2004-353845 | 2004-12-07 | ||
| JP2004353845 | 2004-12-07 |
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| Publication Number | Publication Date |
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| CN1690802A CN1690802A (en) | 2005-11-02 |
| CN100422813C true CN100422813C (en) | 2008-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100635316A Expired - Fee Related CN100422813C (en) | 2004-04-19 | 2005-04-08 | Lighting device, lamp for liquid crystal display device and liquid crystal display device |
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| Country | Link |
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| CN (1) | CN100422813C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5480088B2 (en) * | 2010-09-27 | 2014-04-23 | 古河電気工業株式会社 | Manufacturing method of reflective substrate |
| KR101796732B1 (en) | 2011-04-18 | 2017-11-13 | 엘지디스플레이 주식회사 | Display apparatus |
| CN103047586A (en) * | 2012-12-20 | 2013-04-17 | 康佳集团股份有限公司 | LED (Light-Emitting Diode) backlight module and liquid crystal television |
| KR102019190B1 (en) * | 2013-10-01 | 2019-09-06 | 엘지디스플레이 주식회사 | Display apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1461964A (en) * | 2002-05-29 | 2003-12-17 | 三星电子株式会社 | Back-light assembly and liquid crystal display with the back-light assembly |
| CN1467550A (en) * | 2002-07-11 | 2004-01-14 | 三星电子株式会社 | Backlight assembly and liquid crystal display apparatus having the same |
| JP2004118207A (en) * | 2002-09-28 | 2004-04-15 | Samsung Electronics Co Ltd | Back light assembly, liquid crystal display device, and method for manufacturing the same |
-
2005
- 2005-04-08 CN CNB2005100635316A patent/CN100422813C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1461964A (en) * | 2002-05-29 | 2003-12-17 | 三星电子株式会社 | Back-light assembly and liquid crystal display with the back-light assembly |
| CN1467550A (en) * | 2002-07-11 | 2004-01-14 | 三星电子株式会社 | Backlight assembly and liquid crystal display apparatus having the same |
| JP2004118207A (en) * | 2002-09-28 | 2004-04-15 | Samsung Electronics Co Ltd | Back light assembly, liquid crystal display device, and method for manufacturing the same |
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| CN1690802A (en) | 2005-11-02 |
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