CN100401534C - Lighting device of LED element - Google Patents
Lighting device of LED element Download PDFInfo
- Publication number
- CN100401534C CN100401534C CNB031550991A CN03155099A CN100401534C CN 100401534 C CN100401534 C CN 100401534C CN B031550991 A CNB031550991 A CN B031550991A CN 03155099 A CN03155099 A CN 03155099A CN 100401534 C CN100401534 C CN 100401534C
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- light
- circuit board
- flexible circuit
- emitting diode
- emitting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L24/31—Structure, shape, material or disposition of the layer connectors after the connecting process
- H01L24/32—Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/12—Passive devices, e.g. 2 terminal devices
- H01L2924/1204—Optical Diode
- H01L2924/12041—LED
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/30—Technical effects
- H01L2924/35—Mechanical effects
- H01L2924/351—Thermal stress
- H01L2924/3511—Warping
Abstract
The present invention relates to a light emitting device of light emitting diode elements, which comprises a flexible circuit board and a plurality of light emitting diode elements, wherein the main body of the flexible circuit board forms a structure with a plurality of curved sections; the light emitting diode elements are placed the main body containing the curved sections of the flexible circuit board, and the light emitting diode elements are arranged on the flexible circuit board in a linear way. The curved surfaces on the flexible circuit board of the present invention can provide the function for supporting the reflector of each of the light emitting diode elements to increase the light emitting region of each of the light emitting diode elements so as to increase the light emitting uniformity degree of the light emitting device of the present invention.
Description
Technical field
The present invention relates to a kind of light-emitting diode light-emitting device; Particularly a kind of light-emitting diode light-emitting device that uses flexible circuit board.
Background technology
In recent years, use the LCD of liquid crystal panel to be widely used, it can be as the display screen or the various data output of an image reproducer.
Generally speaking, LCD is used passive type (passive matrix type) liquid crystal panel or is had active (active matrix type) liquid crystal panel of non-linear element (nonlinear device).The liquid crystal panel of these kenels itself can be not luminous, must make a video imaging on liquid crystal panel by a light emitting source.Liquid crystal panel can be divided into penetration and reflective two kinds, and the penetration liquid crystal panel has high brightness and high contrast display characteristic, is widely used in data output display screen usually.Moreover the penetration liquid crystal panel can place its below in conjunction with a backlight, as the light emitting source of penetration liquid crystal panel, through adjusting the luminous of (modulating) backlight, makes video imaging on the penetration liquid crystal panel.
Fig. 1 is the schematic side view with conventional liquid crystal of a penetration liquid crystal panel and a backlight module, and wherein backlight module uses light-emitting diode as light emitting source.This traditional backlight liquid crystal display module is positioned over the below of penetration liquid crystal panel, and backlight module top emergent light passes liquid crystal panel, and image is shown on the liquid crystal panel.With reference to shown in Figure 1, the component sets of this kind LCD becomes: a liquid crystal panel 1 is between two transparency carrier 1A and 1B, and a polarization sheet 1C lays respectively at the picture display surface and the back side thereof of liquid crystal panel 1.One backlight module 3 is positioned at the below of liquid crystal panel 1, and it comprises the light guide plate 2 and a light-emitting diode light emitting module 3A of a rectangular body.This light-emitting diode light emitting module 3A is positioned at a light-incident end one side of light guide plate 2.One light scattering pattern 10 is formed at light guide plate 2 back sides via for example salient point mode of printing.The emission light of light-emitting diode light emitting module 3A is projeced into the light-incident end of light guide plate 2, and enter light guide plate inside through repeatedly reflecting light path, export from a light-emitting face at the relative light guide plate back side via 10 guidings of light scattering pattern again, and be projeced into liquid crystal panel 1 back side.Moreover a reflecting plate 4 is positioned at light guide plate 2 belows, in order to getting back to light guide plate 2 inside from the beam reflection of light guide plate 2 back side outgoing.One diffusion sheet 12 or a prismatic lens (not shown) are positioned between light guide plate 2 and the liquid crystal panel 1.
Fig. 2 is the schematic side view of light-emitting diode light emitting module 3A, and they several light-emitting diodes 31 that comprise a printed circuit board (PCB) 30 and be one-dimensional array are arranged in printed circuit board (PCB) 30 on a surface of the light-incident end of light guide plate 2.By the setting of light guide plate among Fig. 12, the line source kenel of light emitting module 3A can be converted to the area source kenel, for the backlight of doing liquid crystal panel 1.Yet because each light-emitting diode has certain light emitting region among the light emitting module 3A, its light intensity distributions of line source that causes light emitting module 3A to be constituted has a plurality of blanking bars district D to produce, as shown in Figure 3.That is to say that the design of light emitting module 3A can't provide the line source of luminous intensity unanimity.When using as the time, promptly cause each regional luminous intensity of light-emitting face of light guide plate 2 end faces can't reach identical, and influence the luminous uniformity of light guide plate as the light source of Fig. 1 backlight module 3.On the other hand, because each light-emitting diode 31 luminous intensity of arranging on the printed circuit board (PCB) 30 are not unanimity, often cause the line source light intensity distributions of light source module 3A inhomogeneous, even cause some area light flux deficiency of light guide plate 2 light-emitting faces.
In view of the above, demand providing a kind of light-emitting diode light-emitting device of improvement urgently, it can overcome the disappearance of traditional light-emitting diode light-emitting device.
Summary of the invention
Main purpose of the present invention provides a kind of light-emitting diode light-emitting device, it is with several light-emitting diodes of flexible circuit board carrying, and utilization is bent into the configuration that contains several continuous curve surfaces with flexible circuit board, with on flexible circuit board for the function of each light-emitting diode cremasteric reflex device, increasing the light emitting region of each light-emitting diode, and then improve the luminous uniformity of light-emitting diode light-emitting device.
Another object of the present invention provides a kind of light-emitting diode light-emitting device, and it can supply to do a light supply apparatus of a side light type backlight module, and helps improving the luminous uniformity of this backlight module.
Another purpose of the present invention provides a kind of light source adjustment method of side light type backlight module, relative position between flexible circuit board that it can be by adjusting light supply apparatus in this backlight module and the light guide plate, and improve the luminous uniformity of this backlight module.
A further object of the present invention provides a kind of light source adjustment method of side light type backlight module, and it can pass through to adjust the configuration of a flexible circuit board of light supply apparatus in this backlight module, and improves the luminous uniformity of this backlight module.
According to above-described purpose, the invention provides a kind of light-emitting diode light-emitting device, it comprises a flexible circuit board and several light-emitting diodes.One body of this flexible circuit board is the configuration of several sections curved section, and each light-emitting diode is positioned over this flexible circuit board and comprises on the body of these a little curved section, so that these a little light-emitting diodes are linear array on this flexible circuit board.Each curved section curved surface of flexible circuit board of the present invention all can be concave curved surface or convex surface, and perhaps these a little curved section are the interlaced arrangement of concave, convex curved surface.Can provide the function of carrying each light-emitting diode reflector thereon by these a little curved surfaces on the flexible circuit board of the present invention, and increase the light emitting region of each light-emitting diode, and then improve the luminous uniformity of light-emitting device of the present invention.
The present invention provides a kind of light source adjustment method of side light type backlight module on the other hand, can improve the luminous uniformity of backlight module by this method of adjustment.The inventive method comprises a flexible circuit board of a light-emitting device in the adjustment backlight module and the relative position between the light guide plate, the output light intensity value of several surveyed areas of one light-emitting face of detection light guide plate, and several differences between these a little output light intensity values of calculating.When these a little differences all in a setting range, then fix this flexible circuit board, when at least one difference not in this setting range, then repeat above-mentioned adjustment and detect step, until these a little differences all in this setting range.
Description of drawings
Fig. 1 one has the schematic side view of the conventional liquid crystal of penetration liquid crystal panel and backlight module;
Fig. 2 is the schematic side view of a light-emitting diode light emitting module that is used in the backlight module of Fig. 1;
Fig. 3 is the luminous intensity distribution plot of Fig. 2 light-emitting diode light emitting module;
Fig. 4 A to Fig. 4 C is for the present invention's one first specific embodiment and change routine light-emitting diode light-emitting device schematic side view;
Fig. 5 A to Fig. 5 C is for the present invention's one second specific embodiment and change routine light-emitting diode light-emitting device schematic side view;
Fig. 6 A to Fig. 6 C is for the present invention 1 the 3rd specific embodiment and change routine light-emitting diode light-emitting device schematic side view;
Fig. 7 is the luminous intensity distribution plot of light-emitting diode light-emitting device of the present invention;
Fig. 8 is the perspective diagram of the present invention's one side light type backlight module;
Fig. 9 is the perspective diagram of opposite side type back light module of the present invention;
Figure 10 is the light source adjustment method flow chart of steps of side light type backlight module of the present invention.
Symbol description among the figure
1 liquid crystal panel 1A, 1B transparency carrier
2 light guide plate, 3 backlight modules
3A light-emitting diodes pipe fitting light-emitting device
4 reflecting plates, 10 light scattering patterns
12 diffusion sheets, 30 printed circuit board (PCB)s
31 light-emitting diodes
4A light-emitting diode light-emitting device
40 flexible circuit boards, 41 light-emitting diodes
42 transparent binders
4B light-emitting diode light-emitting device
43 flexible circuit boards, 44 light-emitting diodes
45 transparent binders
4C light-emitting diode light-emitting device
46 flexible circuit boards, 47 light-emitting diodes
48 transparent binders
5A light-emitting diode light-emitting device
50 flexible circuit boards, 51 light-emitting diodes
52 transparent binders
5B light-emitting diode light-emitting device
53 flexible circuit boards, 54 light-emitting diodes
55 transparent binders
5C light-emitting diode light-emitting device
56 flexible circuit boards, 57 light-emitting diodes
58 transparent binders
6A light-emitting diode light-emitting device
60 flexible circuit boards, 61 light-emitting diodes
62 transparent binders
6B light-emitting diode light-emitting device
63 flexible circuit boards, 64 light-emitting diodes
65 transparent binders
6C light-emitting diode light-emitting device
66 flexible circuit boards, 67 light-emitting diodes
68 transparent binders
80 side light type backlight modules, 81 light guide plate
82 light-emitting diodes pipe fitting light-emitting devices
811 light-incident ends, 812 back sides
813 light-emitting faces, 90 side light type backlight modules
91 light guide plate, 92 light-emitting diodes pipe fitting light-emitting devices
911 light-incident ends, 912 back sides
913 light-emitting faces, 914 surveyed areas
921 flexible circuit boards, 922 light-emitting diodes
Embodiment
The invention provides a kind of light-emitting diode light-emitting device, use flexible circuit board carrying light-emitting diode, by flexible circuit board being bent into various configurations, for example become the configuration of continuous multi-stage curved surface, become to have the function of reflector (reflector) with a surface design of flexible circuit board being carried light-emitting diode, and then its light emitting region of a light-emitting diode that is carried on each curved surface part is increased, so that the luminous even distribution of light-emitting diode light-emitting device of the present invention, eliminate the blanking bar district, to improve the luminous uniformity of light-emitting device.
On the other hand, the flexible circuit board that the present invention will be carried several light-emitting diodes is bent into the configuration with at least one curved surface, this curved surface is for the more weak light-emitting diode of carrying luminosity, with effect, and then promote the luminosity of this light-emitting diode to this light-emitting diode cremasteric reflex device; This curved surface can be formed at arbitrary section of flexible circuit board, decides on the luminosity of each light-emitting diode own.
Light-emitting diode light-emitting device of the present invention can be for doing a light supply apparatus of a side light type backlight module, improving the luminous uniformity of this backlight module, and is beneficial to the LCD of using this backlight and the image quality of penetration scanner promotes.In addition, light-emitting diode light-emitting device of the present invention can provide the line source with good luminous uniformity, also can be for a light supply apparatus of making a reflective scanning mode instrument.
Light-emitting diode light-emitting device of the present invention will be described in detail as follows by following specific embodiment conjunction with figs.; Wherein accompanying drawing is only drawn main element through simplifying, and reaches each component size size and does not illustrate according to actual ratio, is beneficial to outstanding feature of the present invention and convenient explanation.
Fig. 4 A is the schematic side view of the light-emitting diode light-emitting device 4A of one first specific embodiment according to the present invention, and this light-emitting diode light-emitting device 4A comprises a flexible circuit board 40 and several light-emitting diodes 41.The body of flexible circuit board 40 is the configuration of several sections continuous bend sections, and each curved section has a half elliptic concave curved surface for carrying one light-emitting diode 41, so that many light-emitting diode linear array are on flexible printed circuit 40.Light-emitting diode 41 is bonded on this half elliptic concave curved surface with for example transparent binder 42, this half elliptic concave curved surface has the effect of reflecting surface, the light reflection that light-emitting diode 41 to all the winds can be launched is towards flexible circuit board 40 fronts, it is the light emission direction of light-emitting diode light-emitting device 4A, and then increase the light emitting region of each light-emitting diode 41, originally use the plated printed circuit plate carrying luminous blanking bar district that light-emitting diode had and can eliminate, as shown in Figure 7.Thus, light-emitting diode light-emitting device 4A can provide the luminous uniformity good line source.
Moreover the light-emitting diode light-emitting device 4A of the present invention's first specific embodiment can have following several variation example.Shown in figure 4B, the body of the flexible circuit board 43 of light-emitting diode light-emitting device 4B is the configuration of several sections continuous bend sections, each curved section has a semicircle concave curved surface for carrying one light-emitting diode 44, so that many light-emitting diode linear array are on flexible printed circuit 43.Light-emitting diode 44 is bonded on this semicircle concave curved surface with for example transparent binder 45, but the effect of this semicircle concave curved surface cremasteric reflex face similarly, the light reflection that light-emitting diode 44 to all the winds can be launched is towards flexible circuit board 43 fronts, it is the light emission direction of light-emitting diode light-emitting device 4B, and then increase the light emitting region of each light-emitting diode 44, and can eliminate luminous blanking bar district.Shown in figure 4C, the body of the flexible circuit board 46 of light-emitting diode light-emitting device 4C is the configuration of several sections continuous bend sections, each curved section has a parabolical concave curved surface for carrying one light-emitting diode 47, so that many light-emitting diode linear array are on flexible printed circuit 46.Light-emitting diode 47 is bonded on this parabolical concave curved surface with for example transparent binder 48, but the effect of this parabolical concave curved surface cremasteric reflex face similarly, the light reflection that light-emitting diode 47 to all the winds can be launched is towards flexible circuit board 46 fronts, it is the light emission direction of light-emitting diode light-emitting device 4C, and then increase the light emitting region of each light-emitting diode 47, and can eliminate luminous blanking bar district.
Fig. 5 A is the schematic side view of the light-emitting diode light-emitting device 5A of one second specific embodiment according to the present invention.This light-emitting diode light-emitting device 5A comprises a flexible circuit board 50 and several light-emitting diodes 51.The body of flexible circuit board 50 is the configuration of several sections continuous bend sections, and each curved section has a half elliptic convex surface for carrying one light-emitting diode 51, so that many light-emitting diode linear array are on flexible printed circuit 50.Light-emitting diode 51 is bonded on this half elliptic convex surface with for example transparent binder 52, this half elliptic convex surface has the effect of reflecting surface, the light reflection that light-emitting diode 51 to all the winds can be launched is towards flexible circuit board 50 fronts, it is the light emission direction of light-emitting diode light-emitting device 5A, and then increase the light emitting region of each light-emitting diode 51, originally use the plated printed circuit plate carrying luminous blanking bar district that light-emitting diode had and can eliminate, as shown in Figure 7.Thus, light-emitting diode light-emitting device 5A can provide the luminous uniformity good line source.
Moreover the light-emitting diode light-emitting device 5A of the present invention's second specific embodiment can have following several variation example.Shown in figure 5B, the body of the flexible circuit board 53 of light-emitting diode light-emitting device 5B is the configuration of several sections continuous bend sections, each curved section has a semicircle convex surface for carrying one light-emitting diode 54, so that many light-emitting diode linear array are on flexible printed circuit 53.Light-emitting diode 54 is bonded on this semicircle convex surface with for example transparent binder 55, but the effect of this semicircle convex surface cremasteric reflex face similarly, the light reflection that light-emitting diode 54 to all the winds can be launched is towards flexible circuit board 53 fronts, it is the light emission direction of light-emitting diode light-emitting device 5B, and then increase the light emitting region of each light-emitting diode 54, and can eliminate luminous blanking bar district.Shown in figure 5C, the body of the flexible circuit board 56 of light-emitting diode light-emitting device 5C is the configuration of several sections continuous bend sections, each curved section has a parabolical convex surface for carrying one light-emitting diode 57, so that many light-emitting diode linear array are on flexible printed circuit 56.Light-emitting diode 57 is bonded on this parabolical convex surface with for example transparent binder 58, but the effect of this parabolical convex surface cremasteric reflex face similarly, the light reflection that light-emitting diode 57 to all the winds can be launched is towards flexible circuit board 56 fronts, it is the light emission direction of light-emitting diode light-emitting device 5C, and then increase the light emitting region of each light-emitting diode 57, and can eliminate luminous blanking bar district.
Fig. 6 A is the light-emitting diode light-emitting device 6A schematic side view of one the 3rd specific embodiment according to the present invention.Light-emitting diode light-emitting device 6A comprises a flexible circuit board 60 and several light-emitting diodes 61.Flexible circuit board 60 bodies are the configuration of several continuous bend sections, and these a little continuous bend sections comprise several sections continuous curve surfaces and are made of several oval concave curved surfaces and several oval convex surfaces of interlaced arrangement.Each light-emitting diode 61 is positioned on the curved surface of a curved section of flexible circuit board 60, so that these a little light-emitting diodes 61 are linear array on flexible circuit board 60.Light-emitting diode 61 is bonded on each curved surface with for example transparent binder 62, this curved surface has the effect of reflecting surface, the light reflection that light-emitting diode 61 to all the winds can be launched is towards flexible circuit board 60 fronts, it is the light emission direction of light-emitting diode light-emitting device 6A, and then increase the light emitting region of each light-emitting diode 61, originally use the plated printed circuit plate carrying luminous blanking bar district that light-emitting diode had and can eliminate, as shown in Figure 7.Thus, light-emitting diode light-emitting device 6A can provide the luminous uniformity good line source.
Moreover the light-emitting diode light-emitting device 6A of the present invention's the 3rd specific embodiment can have following several variation example.Shown in figure 6B, the body of the flexible circuit board 63 of light-emitting diode light-emitting device 6B is the configuration of several sections continuous bend sections, and these a little continuous bend sections comprise several sections continuous curve surfaces and are made of several semicircle concave curved surfaces and several semicircle convex surfaces of interlaced arrangement.Each light-emitting diode 64 is positioned on the curved surface of a curved section of flexible circuit board 63, so that these a little light-emitting diodes 64 are linear array on flexible circuit board 63.Light-emitting diode 64 is bonded on each curved surface with for example transparent binder 65, similarly, but the effect of this curved surface cremasteric reflex face, the light reflection that light-emitting diode 64 to all the winds can be launched is towards flexible circuit board 63 fronts, it is the light emission direction of light-emitting diode light-emitting device 6B, and then increase the light emitting region of each light-emitting diode 64, and can eliminate luminous blanking bar district.Shown in figure 6C, the body of the flexible circuit board 66 of light-emitting diode light-emitting device 6C is the configuration of several sections continuous bend sections, and these a little continuous bend sections comprise several sections continuous curve surfaces and are made of several parabolical concave curved surfaces and several parabolical convex surfaces of interlaced arrangement.Each light-emitting diode 67 is positioned on the curved surface of a curved section of flexible circuit board 66, so that these a little light-emitting diodes 67 are linear array on flexible circuit board 66.Light-emitting diode 67 is bonded on each curved surface with for example transparent binder 68, similarly, but the effect of this curved surface cremasteric reflex face, the light reflection that light-emitting diode 67 to all the winds can be launched is towards flexible circuit board 66 fronts, it is the light emission direction of light-emitting diode light-emitting device 6C, and then increase the light emitting region of each light-emitting diode 67, and can eliminate luminous blanking bar district.
Light-emitting diode light-emitting device of the present invention can be for the light supply apparatus of doing a side light type backlight module.With reference to shown in Figure 8, this side light type backlight module 80 comprises a light guide plate 81 and a light-emitting diode light-emitting device 82 of the present invention.The body of this light guide plate 81 can be selected from following any configuration: sphenoid, cuboid, prismatoid and symmetric double sphenoid.Light guide plate 81 with cuboid is an example, and it has at least one light-incident end 811, a back side 812 and a light-emitting face 813.The back side 812 of light guide plate 81 has a light scattering pattern (not shown) and is transmitted in the light beam of light guide plate 81 inside for guiding from its light-emitting face 813 outputs.Light-emitting diode light-emitting device 82 is positioned at light-incident end 811 1 sides of light guide plate 81, and this light-emitting diode light-emitting device 82 can be any light-emitting diode light-emitting device among Fig. 4 A to Fig. 4 C of the present invention, Fig. 5 A to Fig. 5 C and Fig. 6 A to Fig. 6 C.By the light-incident end 811 that light-emitting diode light-emitting device 82 of the present invention provides the good line source of the luminous uniformity to be projeced into light guide plate 81, can improve the emergent light uniformity of the light-emitting face 813 of light guide plate 81.
Light-emitting diode light-emitting device of the present invention changes its flexible circuit board configuration by the bending mode, makes for the effect that is carried on top light-emitting diode cremasteric reflex device, to increase the light emitting region of each light-emitting diode.Light-emitting diode light-emitting device of the present invention is the complex structure degree of increase own not, and is easy to make and reaches.When light-emitting device of the present invention uses light source as a side light type backlight module, not only help promoting the luminous uniformity of backlight module, and can obviously not increase the manufacturing cost of backlight module, have economic worth.
On the other hand, by the characteristic that is easy to bend of light-emitting diode flexible circuit board that light-emitting device uses of the present invention, the invention provides a kind of light source adjustment method of side light type backlight module.With reference to figure 9 and shown in Figure 10, light source adjustment method of the present invention will be specified in hereinafter.At first, in step 100, provide a side light type backlight module 90, this side light type backlight module 90 comprises a light guide plate 91 and a light-emitting diode light-emitting device 92.Light guide plate 91 has at least one light-incident end 911, a back side 912 and a light-emitting face 913.The back side 912 of light guide plate 91 has a light scattering pattern (not shown) exports from light-emitting face 913 for guiding the light beam that is transmitted in light guide plate 91 inside, and light-emitting face 913 has several output light intensity surveyed areas 914.Light-emitting diode light-emitting device 92 is positioned at light-incident end 911 1 sides of light guide plate 91, light-emitting diode light-emitting device 92 comprise a flexible circuit board 921 and several light-emitting diodes 922 be linear array in flexible circuit board 921 on a surface of light guide plate 91 light-incident ends 911.In step 102, adjust the relative position between this flexible circuit board 921 and the light guide plate 91, wherein the method for Tiao Zhenging can have following several: with flexible circuit board 921 along the X-direction move left and right; Flexible circuit board 921 is also rotated along the X-direction move left and right; With flexible circuit board 921 along the Y direction move left and right; Flexible circuit board 921 is also rotated along the Y direction move left and right; Flexible circuit board 921 is moved up and down along Z-direction; Flexible circuit board 921 is moved up and down and rotates along Z-direction; A fixing end A of flexible circuit board 921 bends the other end B of flexible circuit board 921 to Y direction; A fixing end A of flexible circuit board 921 reverses the other end B of flexible circuit board 921 to Z-direction; The fixedly ends A of flexible circuit board 921 and B bend the center C of flexible circuit board 921 to Y direction; The fixing center C of flexible circuit board 921 is with the ends A of flexible circuit board and the B same direction bending towards Y-axis; The fixing center C of flexible circuit board 921 is with the ends A of flexible circuit board and the B rightabout bending towards Y-axis; The fixing center C of flexible circuit board 921 is reversed the ends A and the B of flexible circuit board towards the same direction of Z axle; The fixing center C of flexible circuit board 921 is reversed the ends A of flexible circuit board and B towards the rightabout of Z axle.Then, in step 104, several output light intensity values of these a little surveyed areas 914 of the light-emitting face 913 of detection light guide plate 91.In step 106, calculate several differences between these a little output light intensity values, when these a little differences all in a setting range, fixing flexible circuit board 921 then; When at least one difference not in this setting range, then repeating step 102 to 104, until these a little differences all in this setting range, fixing flexible circuit board 921 again.Thus, can improve the luminous uniformity of backlight module by the light source adjustment method of above-mentioned side light type backlight module 90.In brief, the light source adjustment method of side light type backlight module of the present invention can be at some regional luminous flux deficiency on the light-emitting face 913 of light guide plate 91, adjust the configuration of corresponding flexible circuit board 921, with the light-emitting diode luminosity of change carrying, and then improve the luminous fluxes in this a little zones.
The above is specific embodiments of the invention only, is not in order to limit protection scope of the present invention; All other do not break away from the equivalence of being finished under the disclosed spirit and changes or modification, all should be included in the scope of claims.
Claims (24)
1. a light-emitting diode light-emitting device is characterized in that, comprising:
One flexible circuit board, its body is the configuration with at least one curved section; And
Several light-emitting diodes are positioned over this flexible circuit board and comprise on this body of this curved section, make these light-emitting diodes be linear array on this flexible circuit board;
The described flexible circuit board that wherein has described curved section reflects the light that described light-emitting diode sends, so that the reverberation of described light-emitting diode has uniform luminous intensity.
2. light-emitting diode light-emitting device as claimed in claim 1, a curved surface of this curved section of wherein above-mentioned flexible circuit board is concave curved surface.
3. light-emitting diode light-emitting device as claimed in claim 2, this concave curved surface of this curved section of wherein above-mentioned flexible circuit board is selected from following arbitrary configuration: half elliptic, semicircle and parabola shaped.
4. light-emitting diode light-emitting device as claimed in claim 1, a curved surface of this curved section of wherein above-mentioned flexible circuit board is convex surface.
5. light-emitting diode light-emitting device as claimed in claim 4, this convex surface of this curved section of wherein above-mentioned flexible circuit board is selected from following arbitrary configuration: half elliptic, semicircle and parabola shaped.
6. a light-emitting diode light-emitting device is characterized in that, comprising:
One flexible circuit board, its body is the configuration of several curved section, and these curved section comprise several sections curved surfaces and are made of several concave curved surfaces and the convex surface of interlaced arrangement; And
Several light-emitting diodes are positioned over this flexible circuit board and comprise on this body of these curved section, so that these light-emitting diodes are linear array on this flexible circuit board;
The described flexible circuit board that wherein has described curved section reflects the light that described light-emitting diode sends, so that the reverberation of described light-emitting diode has uniform luminous intensity.
7. light-emitting diode light-emitting device as claimed in claim 6, this concave curved surface of each this curved section of wherein above-mentioned flexible circuit board is selected from following arbitrary configuration: half elliptic, semicircle and parabola shaped.
8. light-emitting diode light-emitting device as claimed in claim 6, this convex surface of each this curved section of wherein above-mentioned flexible circuit board is selected from following arbitrary configuration: half elliptic, semicircle and parabola shaped.
9. the side light type backlight module of a tool light-emitting diode light-emitting device is characterized in that, comprising:
One light guide plate has at least one light-incident end, a back side and a light-emitting face, and this back side has a light scattering pattern and is transmitted in the light beam of this light guide plate inside for guiding from this light-emitting face output; And
One light-emitting diode light-emitting device, be positioned at this light-incident end one side of this light guide plate, this light-emitting diode light-emitting device comprises a flexible circuit board and several light-emitting diodes, wherein a body of this flexible circuit board is the configuration with several sections curved section, and these light-emitting diodes are positioned over this flexible circuit board and comprise on this body of these curved section, so that these light-emitting diodes are linear array on this flexible circuit board;
The described flexible circuit board that wherein has described curved section reflects the light that described light-emitting diode sends, and has uniform luminous intensity so that the reflection of described light-emitting diode enters the light of described light guide plate.
10. the side light type backlight module of tool light-emitting diode light-emitting device as claimed in claim 9, a curved surface of each this curved section of wherein above-mentioned flexible circuit board is concave curved surface.
11. the side light type backlight module of tool light-emitting diode light-emitting device as claimed in claim 10, this concave curved surface of each this curved section of wherein above-mentioned flexible circuit board is selected from following arbitrary configuration: half elliptic, semicircle and parabola shaped.
12. the side light type backlight module of tool light-emitting diode light-emitting device as claimed in claim 9, a curved surface of each this curved section of wherein above-mentioned flexible circuit board is convex surface.
13. the side light type backlight module of tool light-emitting diode light-emitting device as claimed in claim 12, this convex surface of each this curved section of wherein above-mentioned flexible circuit board is selected from following arbitrary configuration: half elliptic, semicircle and parabola shaped.
14. the side light type backlight module of tool light-emitting diode light-emitting device as claimed in claim 9, the configuration of wherein above-mentioned light guide plate be selected from following any one: sphenoid, cuboid, prismatoid and symmetric double sphenoid.
15. comprising several sections curved surfaces, the side light type backlight module of tool light-emitting diode light-emitting device as claimed in claim 9, these curved section of wherein above-mentioned flexible circuit board constitute by several concave curved surfaces and the convex surface of interlaced arrangement.
16. the side light type backlight module of tool light-emitting diode light-emitting device as claimed in claim 15, this concave curved surface of each this curved section of wherein above-mentioned flexible circuit board is selected from following arbitrary configuration: half elliptic, semicircle and parabola shaped.
17. the side light type backlight module of tool light-emitting diode light-emitting device as claimed in claim 15, this convex surface of each this curved section of wherein above-mentioned flexible circuit board is selected from following arbitrary configuration: half elliptic, semicircle and parabola shaped.
18. the light source adjustment method of a side light type backlight module is characterized in that, comprising:
One side light type backlight module is provided, this side light type backlight module comprises a light guide plate and a light-emitting diode light-emitting device, this light guide plate has at least one light-incident end, one back side and a light-emitting face, this back side has a light scattering pattern and is transmitted in the light beam of this light guide plate inside for guiding from this light-emitting face output, and this light-emitting face has several output light intensity surveyed areas, this light-emitting diode light-emitting device is positioned at this light-incident end one side of this light guide plate, this light-emitting diode light-emitting device comprise a flexible circuit board and several light-emitting diodes be linear array in this flexible circuit board on a surface of this light-incident end;
Adjust the relative position between this flexible circuit board and this light guide plate;
Detect several output light intensity values of these surveyed areas of this light-emitting face of this light guide plate; And
Calculate several differences between these output light intensity values, when these differences all in a setting range, then fix this flexible circuit board, when at least one difference not in this setting range, then repeat above-mentioned adjustment and detect step, until these differences all in this setting range.
19. comprising, the light source adjustment method of side light type backlight module as claimed in claim 18, the step of the relative position between this flexible circuit board of wherein above-mentioned adjustment and this light guide plate fix this flexible circuit board one end and with the bending of the other end of this flexible circuit board.
Fix this flexible circuit board one end and the other end of this flexible circuit board is reversed 20. the light source adjustment method of side light type backlight module as claimed in claim 18, the step of the relative position between this flexible circuit board of wherein above-mentioned adjustment and this light guide plate comprise.
21. the light source adjustment method of side light type backlight module as claimed in claim 18, the step of the relative position between this flexible circuit board of wherein above-mentioned adjustment and this light guide plate comprise the two ends of fixing this flexible circuit board and with the center bending of this flexible circuit board.
22. the light source adjustment method of side light type backlight module as claimed in claim 18, the step of the relative position between this flexible circuit board of wherein above-mentioned adjustment and this light guide plate comprise the center of fixing this flexible circuit board and with the two ends of this flexible circuit board towards an equidirectional bending.
23. the light source adjustment method of side light type backlight module as claimed in claim 18, the step of the relative position between this flexible circuit board of wherein above-mentioned adjustment and this light guide plate comprise the center of fixing this flexible circuit board and with the two ends of this flexible circuit board towards rightabout bending each other.
24. the light source adjustment method of side light type backlight module as claimed in claim 18, the step of the relative position between this flexible circuit board of wherein above-mentioned adjustment and this light guide plate comprise the center of fixing this flexible circuit board and the two ends of this flexible circuit board are reversed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031550991A CN100401534C (en) | 2003-08-27 | 2003-08-27 | Lighting device of LED element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031550991A CN100401534C (en) | 2003-08-27 | 2003-08-27 | Lighting device of LED element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1591914A CN1591914A (en) | 2005-03-09 |
| CN100401534C true CN100401534C (en) | 2008-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031550991A Expired - Fee Related CN100401534C (en) | 2003-08-27 | 2003-08-27 | Lighting device of LED element |
Country Status (1)
| Country | Link |
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| CN (1) | CN100401534C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101224376B1 (en) | 2006-01-25 | 2013-01-21 | 삼성디스플레이 주식회사 | Backlight assembly and liquid crystal display apparatus having the same |
| US7481563B2 (en) * | 2006-09-21 | 2009-01-27 | 3M Innovative Properties Company | LED backlight |
| CN1945803B (en) * | 2006-10-27 | 2010-08-18 | 杭州中宙光电有限公司 | Packaging method for high power LED expansion light source device |
| CN101578478B (en) * | 2007-01-15 | 2011-06-22 | 香港应用科技研究院有限公司 | Light emitting device and lens thereof |
| US7688526B2 (en) | 2007-01-18 | 2010-03-30 | Hong Kong Applied Science And Technology Research Institute Co. Ltd. | Light-emitting devices and lens therefor |
| CN101452917B (en) * | 2007-12-05 | 2013-02-20 | 财团法人工业技术研究院 | Light source device |
| CN101922660A (en) * | 2010-07-23 | 2010-12-22 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| TW201224334A (en) * | 2010-12-07 | 2012-06-16 | Ind Tech Res Inst | Flexible light source module |
| CN109449273A (en) * | 2018-12-11 | 2019-03-08 | 常熟理工学院 | A kind of ultraviolet LED encapsulating structure |
| CN117038818A (en) * | 2023-10-08 | 2023-11-10 | 盐城鸿石智能科技有限公司 | High-reflection micro LED and preparation method thereof |
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| US5613751A (en) * | 1995-06-27 | 1997-03-25 | Lumitex, Inc. | Light emitting panel assemblies |
| US20030016521A1 (en) * | 2000-09-07 | 2003-01-23 | Wang San Zhuang | Backlighting system for displays |
| US20030046842A1 (en) * | 2000-01-06 | 2003-03-13 | U.S. Philis Corporation | Luminaire and light-emitting panel |
| JP2003100126A (en) * | 2001-09-20 | 2003-04-04 | Citizen Electronics Co Ltd | Chromaticity correction by light guide plate |
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| US5613751A (en) * | 1995-06-27 | 1997-03-25 | Lumitex, Inc. | Light emitting panel assemblies |
| US20030046842A1 (en) * | 2000-01-06 | 2003-03-13 | U.S. Philis Corporation | Luminaire and light-emitting panel |
| US20030016521A1 (en) * | 2000-09-07 | 2003-01-23 | Wang San Zhuang | Backlighting system for displays |
| JP2003100126A (en) * | 2001-09-20 | 2003-04-04 | Citizen Electronics Co Ltd | Chromaticity correction by light guide plate |
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| CN1591914A (en) | 2005-03-09 |
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