CN103883932A

CN103883932A - Backlight module

Info

Publication number: CN103883932A
Application number: CN201210561179.9A
Authority: CN
Inventors: 陈柏洲
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2012-12-21
Filing date: 2012-12-21
Publication date: 2014-06-25

Abstract

A backlight module comprises a light guide plate and a light source module. The light guide is provided with a connecting end. The light source module comprises a coupling member and an LED. The coupling member comprises a coupling end matching with the LED and a connecting end matching with the connecting end of the light guide plate. The thickness of the coupling end of the coupling member is larger than that of the connecting end of the light guide plate. The thickness and length of the coupling end are larger than or equal to the thickness and length of the LED. The thickness and length of the connecting end of the coupling member are smaller than or equal to the thickness and length of the connecting end of the light guide plate. Light from the LED enters the coupling member from the coupling end and is coupled by the coupling member prior to entering the light guide plate through the connecting end of the light guide plate.

Description

Backlight module

Technical field

The present invention relates to a kind of optical module, especially a kind of backlight module.

Background technology

Traditional backlight module comprises a LGP and is attached at multiple light emitting diodes of LGP one end.At various electronic installations, as panel computer, under the trend of doing thinner and thinner, the thickness of backlight module also requires more and more thinner.In the case of the thickness limit of light emitting diode is determined substantially at present, the thickness of LGP determines the thickness of backlight module.But when the thickness of LGP is reduced in the situation of the thickness that is less than light emitting diode, the part light that light emitting diode sends penetrates and can not be coupled in LGP outside LGP, cause the utilization rate of light emitting diode to reduce.So, how in realizing backlight module slimming, ensure that it is industry letter technical barrier to be solved that backlight module has higher light utilization efficiency.

Summary of the invention

In view of this, be necessary to provide the backlight module that a kind of thickness is little and light emitting diode utilization rate is high.

A kind of backlight module, comprise LGP and light source module, described LGP has binding end, described light source module comprises male part and light emitting diode, described male part comprises the coupled end coordinating with light emitting diode and the link coordinating with the binding end of described LGP, the thickness of described coupled end is greater than the thickness of described link, the thickness of described coupled end and length are more than or equal to respectively thickness and the length of described light emitting diode, the thickness of described link and length are less than or equal to respectively thickness and the length of the binding end of described LGP, the light that described light emitting diode sends enters male part and enter LGP from link after male part coupling from coupled end.

In the present invention, the coupled end of described male part coordinates with light emitting diode, link coordinates with the binding end of described LGP, because the thickness of described coupled end is greater than the thickness of described link, when the thickness of LGP is reduced in the situation of the thickness that is less than light emitting diode, the light that light emitting diode sends still can enter male part and enter LGP from the less link of thickness after male part is coupled from the larger coupled end of thickness, can avoid the part light that light emitting diode sends outside LGP, to penetrate and can not be coupled in LGP, in realizing backlight module slimming, ensure the higher utilization rate of light.

Brief description of the drawings

Fig. 1 is the schematic diagram of backlight module of the present invention.

Fig. 2 is the schematic diagram of light source module shown in Fig. 1.

Fig. 3 is the cutaway view of Fig. 2 along III-III.

Main element symbol description

Light source module	10
		Male part	11
Light emitting diode	13
		LGP	30
Binding end	31
		Backlight module	100
Coupled end	111
		Link	113
Reflector layer	115

Following detailed description of the invention further illustrates the present invention in connection with above-mentioned accompanying drawing.

Detailed description of the invention

Refer to Fig. 1, backlight module 100 of the present invention comprises multiple light source modules 10 and is close to the LGP 30 of a slimming of light source module 10.

Described LGP 30 is a square lamellar body, and its one end is the binding end 31 for being closely sticked with light source module 10.

Please refer to Fig. 2, described multiple light source modules 10 intervals arrange.The light emitting diode 13 that each light source module 10 comprises a male part 11 and coordinates with described male part 11.The size of each male part 11 is much smaller than the size of described LGP 30, a link 113 that has a coupled end 111 coordinating with light emitting diode 13 and be oppositely arranged with coupled end 111.Described link 113 is closely sticked on the end face of the binding end 31 of described LGP 30.The thickness of described link 113 and length are less than or equal to respectively thickness and the length of described binding end 31, thereby described link 113 can be sticked completely on the end face of described binding end 31.The thickness of described coupled end 111 and length are more than or equal to respectively thickness and the length of described light emitting diode 13, thereby described light emitting diode 13 can be sticked completely on the end face of described coupled end 111.

In the present embodiment, described male part 11 is a quadrangular, and its cross section is trapezoidal.The thickness of described male part 11 reduces to link 113 gradually from coupled end 111.The end face of the end face of described coupled end 111 and link 113 is rectangle, and the face area of described coupled end 111 is greater than the area of the end face of described link 113.The thickness of described link 113 equals the thickness of described binding end 31, and its length is less than the length of described binding end 31, and after it is sticked on the end face of binding end 31, upper and lower relative both sides are concordant with the upper and lower relative both sides of described binding end 31 respectively.The thickness of described coupled end 111 and length are greater than thickness and the length of described light emitting diode 13, and described light emitting diode 13 is sticked at coupled end 111 middle parts of described male part 11.

When described backlight module 100 uses, the luminous and described light of described light emitting diode 13 directly enters male part 11 from coupled end 111, after the interior generation total reflection of male part 11, all enters in LGP 30 through faying face from link 113.

The region of the light of launching for fear of light emitting diode 13 please refer to Fig. 3 beyond the end face of link 113 penetrated and caused the utilization rate of light to reduce, and in other region surface beyond the end face of link 113 of male part 11 and the end face of coupled end 111 are sticked the region of light emitting diode 13, forms a reflector layer 115.So, even if there is light to reach these regions, also because the reflection of reflector layer 115 can be by light emission to male part 11 inside.

In the present invention, the coupled end 111 of described male part 11 coordinates with light emitting diode 13, link 113 coordinates with the binding end 31 of described LGP 30, because the thickness of described coupled end 111 is greater than the thickness of described link 113, when the thickness of LGP 30 is reduced in the situation of the thickness that is less than light emitting diode 13, the light that light emitting diode 13 sends still can enter male part 11 and enter LGP 30 from the less link 113 of thickness after male part 11 is coupled from the larger coupled end 111 of thickness, can avoid the part light that light emitting diode 13 sends can not be coupled in LGP 30 in the outer ejaculation of LGP 30, in realizing backlight module slimming, ensure the higher utilization rate of light.

Claims

1. a backlight module, comprise LGP and light source module, described LGP has binding end, it is characterized in that: described light source module comprises male part and light emitting diode, described male part comprises the coupled end coordinating with light emitting diode and the link coordinating with the binding end of described LGP, the thickness of described coupled end is greater than the thickness of described link, the thickness of described coupled end and length are more than or equal to respectively thickness and the length of described light emitting diode, the thickness of described link and length are less than or equal to respectively thickness and the length of the binding end of described LGP, the light that described light emitting diode sends enters male part and enter LGP from link after male part coupling from coupled end.

2. backlight module as claimed in claim 1, is characterized in that: described light emitting diode is fitted in the end face of described coupled end, and the end face of described link is fitted in the end face of described binding end.

3. backlight module as claimed in claim 1, is characterized in that: the thickness of described male part reduces to link gradually from coupled end.

4. backlight module as claimed in claim 3, is characterized in that: described male part is that cross section is trapezoidal quadrangular, and the end face of described coupled end and the end face of described link are quadrangle.

5. backlight module as claimed in claim 1, is characterized in that: the thickness of described light emitting diode and length are less than respectively thickness and the length of described coupled end, and described light emitting diode is sticked at the end face middle part of described coupled end.

6. backlight module as claimed in claim 1, is characterized in that: the plate body that described LGP is even thickness, its thickness equals the thickness of described link.

7. backlight module as claimed in claim 1, is characterized in that: on described male part except be sticked extra-regional other region surface of light emitting diode of the end face of link and coupled end are formed with reflector layer.