CN101737684B

CN101737684B - Backlight module and light source device thereof

Info

Publication number: CN101737684B
Application number: CN2010100038918A
Authority: CN
Inventors: 郑川河; 黄国正
Original assignee: AU Optronics Corp
Current assignee: AU Optronics Corp
Priority date: 2010-01-15
Filing date: 2010-01-15
Publication date: 2011-07-20
Anticipated expiration: 2030-01-15
Also published as: CN101737684A

Abstract

The invention relates to a light source device and a backlight module. The backlight module comprises a frame, a light guide plate and the light source device. The light source device comprises a base plate, a plurality of light-emitting components and positioning components, wherein the plurality of light-emitting components are positioned on the base plate and emit light rays toward the light guide plate; the positioning components are positioned on the base plate and the side edges of the plurality of light-emitting components and comprise slots and butting parts, wherein the slots are connected with electronic components, and the butting parts elastically butt against the light guide plate so as to position the light guide plate. The side edges of the light-emitting components are provided with the positioning components, and the positioning components can elastically butt against the light guide plate to absorb the swelling amount of the heated light guide plate so as to achieve the purpose of positioning the light guide plate, can also be used as connectors connecting the electronic components, and are used for positioning the light guide plate without blow holes and tongue piece, thus effectively solving the problem generated by the hole breaking of the frame in the traditional structure.

Description

Backlight module and light supply apparatus thereof

Technical field

The present invention is a kind of backlight module, particularly a kind of backlight module and light supply apparatus thereof.

Background technology

Backlight module is one of key part and component of lcd products, has been widely used at present on the various electronic products such as personal digital assistant (PDA), digital camera, satellite navigation system and flat-surface television.Along with the LED terminal applies is also more and more, it is trend of the times certainly that the LED-backlit source replaces cathode fluorescent tube (C FL), wherein, the backlight of LED can be divided into direct-light type LED backlight module and side light type LED backlight module according to the position of light source.The direct-light type LED backlight module mainly with the LED uniform crystal particles be configured in liquid crystal panel the rear as light emitting source, make backlightly can evenly be communicated to whole front panel; Side light type LED backlight module mainly is configured in LED crystal grain four edges of panel, when LED is luminous, is transported to the zone of panel central authorities by LGP.Because side light type LED backlight module is located at the side of LGP with light source, is fit to be applied to undersized liquid crystal display product, therefore favored day by day.

The side light type LED backlight module of prior art is provided with LGP and a plurality of light emitting diode in the housing that metal material is made, wherein, a plurality of light emitting diodes are close proximity to LGP, the light that light emitting diode is penetrated directly enters LGP, and many song tongue pieces are set in housing inner edge place, use that LGP is positioned in the housing, guarantee stability of light source simultaneously.Yet this kind is very difficult to be applied to the LED-backlit module of four limit light inlets with the structure of tongue piece location LGP, in addition, housing not only causes light leakage phenomena easily because of flanging needs holes, and dust is fallen in the backlight module, influenced the quality of liquid crystal display product; Moreover the white reflection sheet need cooperate the shape fabricating construction of LGP and housing, makes its manufacturing cost significantly promote.

Therefore, the structure that how to improve side light type LED backlight module promotes the quality of product by this and reduces its cost to solve the orientation problem of LGP, for the inventor of this case and be engaged in the problem that those skilled in the art desires most ardently improvement.

Summary of the invention

In view of this, the present invention proposes a kind of light supply apparatus, and in order to provide light to the LGP with fixed part, light supply apparatus comprises: substrate, a plurality of luminescence component and positioning component.A plurality of luminescence components are positioned on the substrate, towards LGP emission light; Positioning component is positioned on the substrate and is positioned at the side of a plurality of luminescence components, corresponding fixed part setting, and positioning component comprises slot and support division, and slot is in order to connect electronic building brick, and support division flexibly supports LGP and locatees LGP.

The present invention also proposes a kind of backlight module, comprises: framework, LGP and light supply apparatus.LGP is positioned at framework, comprises fixed part; Light supply apparatus comprises between framework and LGP: substrate; A plurality of luminescence components are positioned on the substrate, towards LGP emission light; And positioning component, be positioned on the substrate and be positioned at the side of a plurality of luminescence components, corresponding fixed part setting, positioning component comprises slot and support division, and slot is in order to connect electronic building brick, and support division flexibly supports LGP and locatees LGP.

The present invention is provided with positioning component in the side of luminescence component, and flexibly support LGP with positioning component, use the swell increment after the absorption LGP is heated and firmly locate LGP in framework, effectively solve the problem that existing structure is produced because of the framework holes, and then connect electronic building brick with positioning component, for example connect power module and required electric power when the backlight module running can be provided.

Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.

Description of drawings

Fig. 1 is the schematic diagram of first embodiment of the invention backlight module;

Fig. 2 is the schematic diagram of first embodiment of the invention light supply apparatus;

Fig. 3 A is the schematic diagram () of first embodiment of the invention positioning component;

Fig. 3 B is the schematic diagram (two) of first embodiment of the invention positioning component;

Fig. 4 is the decomposing schematic representation of first embodiment of the invention positioning component;

Fig. 5 is the generalized section of first embodiment of the invention positioning component.

Fig. 6 A be the first embodiment of the invention positioning component schematic diagram () is set;

Fig. 6 B be the first embodiment of the invention positioning component schematic diagram (two) is set;

Fig. 7 is the schematic diagram of second embodiment of the invention backlight module.

Wherein, Reference numeral

1............ backlight module

2............ framework

4............ LGP

4a............ light inlet side

4b............ exiting surface

41............ fixed part

411........... reflecting surface

6............ light supply apparatus

61............ substrate

62............ luminescence component

64............ positioning component

640........... pedestal

6401........... limiting section

6402........... stopper section

641........... weld pad

642........... slot

643........... conducting terminal

645........... elastic parts

646........... support division

6461........... guidance part

The specific embodiment

Below in conjunction with the drawings and specific embodiments technical solution of the present invention being described in detail, further understanding purpose of the present invention, scheme and effect, but is not the restriction as claims protection domain of the present invention.

Fig. 1, Fig. 2, Fig. 3 A, Fig. 3 B, Fig. 4 and Fig. 5 illustrate the first embodiment of the present invention.

Backlight module 1 comprises: framework 2, LGP 4, light supply apparatus 6.

Framework 2 general rectangular ducted bodies preferably can be made by metal material, or be to make with plastic material or other suitable material.

LGP 4 general parallelogram bodies also are arranged in the framework 2, and it has light inlet side 4a and exiting surface 4b, and at this, exiting surface 4b is for can intersect at light inlet side 4a (as Fig. 6 A).In addition, LGP 4 is provided with the fixed part 41 that is inner concavity in its corner part or a side, and wherein, fixed part 41 can be groove, depression, but the present invention is non-as limit.Moreover the surface of fixed part 41 is a reflecting surface 411, and it can or attach reflector plate by the coating reflective coating and be formed.

Light supply apparatus 6 is arranged between framework 2 and the LGP 4, and it preferably can be made up of substrate 61, a plurality of luminescence component 62 and positioning component 64; Wherein, substrate 61 is laid with circuit, and at interval luminescence component 62 is set thereon, and luminescence component 62 can be towards the light inlet side 4a of LGP 4 emission light, and light can avoid light to be missed by fixed part 41 places via reflecting surface 411 reflections.The side of luminescence component 62 then is provided with positioning component 64, and at this, the fixed part 41 of positioning component 64 corresponding inner concavities is provided with and is inserted into LGP 4, preferably can be made up of pedestal 640, slot 642 and support division 646; Wherein, pedestal 640 is general rectangular ducted body, is provided with weld pad (pad) 641 (as Fig. 6 A and Fig. 6 B) in its outer surface, preferably can be on substrate 61 via surface mount technology (SMT) piece, or be welded on the substrate 61 with manual type; Slot 642 is arranged at the side on the pedestal 640, and conducting terminal 643 is set in slot 642, and an end of conducting terminal 643 can be connected in substrate 61, connects electronic building bricks (figure does not show) to utilize slot 642, for example connects power modules with slot 642 and required electric power when its running is provided; Support division 646 can be made by elastic material, and lives and to be arranged on the pedestal 640 with moving, in order to flexibly support the light inlet side 4a of LGP 4, can absorb the swell increment after LGP 4 is heated by this and locatees LGP 4 in framework 2.

In above stated specification, the surface of weld pad 641 place pedestals 640 preferably is and support division 646 parallel (as Fig. 6 A), or is weld pad 641 to be arranged at pedestal 640 surfaces (as Fig. 6 B) of intersecting with support division 646 according to actual demand.

At this, pedestal 640 is provided with limiting

section

6401, and 646 of support divisions are provided with corresponding guidance part 6461, locatees support division 646 and pedestal 640 with guidance part 6461 in conjunction with limiting section 6401, and makes support division 646 pedestal 640 displacements (as Fig. 5) relatively; In the present embodiment, limiting section 6401 is the elongate slot of hollow form, and guidance part 6461 is the convex body, and guidance part 6461 can embed in the limiting section 6401 and along limiting section 6401 displacements, and only only for giving an example, the present invention is non-as limit for aforementioned structure.Moreover, in the pedestal 640 elastic parts 645 can be set, in order to supporting support division 646, and elastic parts 645 can be spring or is made by the rubber-like elastomeric material.

After backlight module of the present invention 1 assembling was finished, elastic parts 645 supported support division 646, made support division 646 can support the light inlet side 4a of LGP 4 and located LGP 4.When luminescence component 62 is launched light towards the light inlet side 4a of LGP 4, LGP 4 is heated and expands, extruding support division 646 and compressing elastic parts 645 strains and shrinking are used the positioning states that absorbs the swell increment after LGP 4 is heated and can keep LGP 4; And luminescence component 62 is not when luminous, and LGP 4 reverts to the state before the expanded by heating, and therefore, elastic parts 645 elasticity are recovered and promoted support division 646 and support LGP 4.

Fig. 7 illustrates the second embodiment of the present invention.Present embodiment and last embodiment difference are the structure of pedestal 640; In the present embodiment, the side of pedestal 640 is extended with stopper section 6402, whole sight, pedestal 640 generally is L font shape; Wherein, positioning component 64 supports the light inlet side 4a of LGP 4 with support division 646 on first direction, support LGP 4 with stopper section 6402 on second direction, reaches LGP 4 all can reach the location on first direction and second direction effect.At this, first direction intersects at second direction.

The present invention is provided with positioning component in the side of luminescence component, and positioning component can flexibly support LGP, use the purpose that absorbs the swell increment after LGP is heated and reach the location LGP, and can be used as connector and connect electronic building brick, for example connect power module and required electric power when the backlight module running can be provided; Therefore, the present invention does not need with holes and the tongue piece mode is set to locate LGP, effectively solves the problem that existing structure is produced because of the framework holes.

Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.

Claims

1. light supply apparatus in order to provide light to the LGP with a fixed part, is characterized in that this light supply apparatus comprises:

One substrate;

A plurality of luminescence components are positioned on this substrate, towards this LGP emission light; And

Certain hyte part, be positioned on this substrate and be positioned at the side of those luminescence components, comprise a pedestal, a slot and a support division, this pedestal is in order to be provided with this slot and this support division, this slot is in order to connect an electronic building brick, this support division flexibly supports this LGP and locatees this LGP, and this support division work is arranged at this pedestal with moving;

Wherein, this pedestal comprises a limiting section, and this support division comprises a guidance part, in conjunction with this limiting section and this guidance part and locate this support division and this pedestal, makes this pedestal displacement relatively of this support division.

2. light supply apparatus as claimed in claim 1 is characterized in that this positioning component comprises a weld pad, is welded on this substrate.

3. light supply apparatus as claimed in claim 2 is characterized in that, this positioning component with the surface mount technology piece on this substrate.

4. light supply apparatus as claimed in claim 1 is characterized in that this positioning component also comprises an elastic parts, is positioned at this pedestal, in order to support this support division.

5. light supply apparatus as claimed in claim 4 is characterized in that, this elastic parts is a spring.

6. light supply apparatus as claimed in claim 4 is characterized in that this elastic parts is for to be made by the rubber-like elastomeric material.

7. light supply apparatus as claimed in claim 1 is characterized in that this positioning component also comprises a conducting terminal, is positioned at this slot.

8. light supply apparatus as claimed in claim 7 is characterized in that, an end of this conducting terminal is connected in this substrate.

9. a backlight module is characterized in that, comprises:

One framework;

One LGP is positioned at this framework, comprises a fixed part; And

One light supply apparatus between this framework and this LGP, comprises:

One substrate;

Certain hyte part, be positioned on this substrate and be positioned at the side of those luminescence components, to should the fixed part setting, this positioning component comprises a pedestal, a slot and a support division, this pedestal is in order to be provided with this slot and this support division, this slot is in order to connect an electronic building brick, and this support division flexibly supports this LGP and locatees this LGP, and this support division work is arranged at this pedestal with moving;

Wherein, this pedestal comprises a limiting section, and this support division comprises a guidance part, in conjunction with this limiting section and this guidance part and locate this support division and this pedestal, and makes this pedestal displacement relatively of this support division.

10. backlight module as claimed in claim 9 is characterized in that this positioning component comprises a weld pad, is welded on this substrate.

11. backlight module as claimed in claim 10 is characterized in that, this positioning component with the surface mount technology piece on this substrate.

12. backlight module as claimed in claim 9 is characterized in that, this positioning component also comprises an elastic parts, is positioned at this pedestal, in order to support this support division.

13. backlight module as claimed in claim 12 is characterized in that, this elastic parts is a spring.

14. backlight module as claimed in claim 12 is characterized in that, this elastic parts is for to be made by the rubber-like elastomeric material.

15. backlight module as claimed in claim 9 is characterized in that, this positioning component also comprises a conducting terminal, is positioned at this slot.

16. backlight module as claimed in claim 15 is characterized in that, an end of this conducting terminal is connected in this substrate.

17. backlight module as claimed in claim 9 is characterized in that, this LGP also comprises a reflecting surface, is positioned at the surface of this fixed part.