CN201487826U

CN201487826U - Light guide plate applicable to ultra-thin backlights

Info

Publication number: CN201487826U
Application number: CN2009201515917U
Authority: CN
Inventors: 李云龙
Original assignee: SHENZHEN BAOMING SEIKO CO Ltd
Current assignee: Shenzhen Baoming Technology Co., Ltd.
Priority date: 2009-04-30
Filing date: 2009-04-30
Publication date: 2010-05-26
Anticipated expiration: 2019-04-30

Abstract

The utility model relates to a light guide plate applicable to ultra-thin backlights. The light guide plate has the following characteristics that: a projected sloped structure (12) is formed at a light inlet end surface (11) of the light guide plate (1), the thickness of the projected sloped structure (12) is larger than the width of a light outlet (21) of an LED (2) with the thickness of 0.6mm, and the thickness of a light guide plate body (13) can fully meet the requirement on an ultra-thin size. During application, the LED (2) is welded on a flexible circuit board (3), and is bonded and fixed by a double-sided adhesive tape (4), the light emitted by the LED (2) enters the light guide plate body (13) via the projected sloped structure (12) of the light inlet end surface (11) of the light guide plate (1), and thereby the design purpose is achieved. The utility model has the advantages of simple structure, low cost, good brightness effect and ultra-thin size, and is widely applicable to the field of the light guide plates of ultra-thin backlights.

Description

Be applicable to the LGP of super-thin backlight

Technical field

The utility model relates to a kind of light conducting plate structure, especially a kind of LGP that is applicable to super-thin backlight.

Background technology

Continuous progress along with science and technology, backlight is used more and more wider, the particularly application on mobile phone, and cell-phone function is more and more at present, more and more higher to the requirement that shows, require high-resolution, high brightness, thus also more and more higher to the brightness requirement of backlight, backlight is to rely on the emitting led light that sends to reach the purpose of whole apparent screen light through LGP, and mobile phone is to ultrathin type, wide display screen direction develops, and perhaps under the situation of constancy of volume, increases more function, the space thickness of extruding display part, make that the space of backlight energy usefulness is more and more littler, thickness thins down, and the many power consumptions of function are big, require backlight power saving as much as possible again, with minimum LED, satisfy the ultra-thin requirement of backing structure, high brightness as far as possible, the requirement that energy consumption is low, therefore, the LGP of backlight just is required more and more thinner.

Thick is the LED of 0.6mm, because of it has brightness, color is blue partially, colourity is effective, obtained using widely, and most of ultra-thin backlight, the space of LED position allows to place the thick LED of 0.6mm, for the employing of the LED lamp of this kind thickness provides steric requirements, and be to satisfy ultra-thin requirement, mostly the thickness of LGP less than thick be the width of light-emitting window of the LED of 0.6mm, cause light not enter LGP fully and cause the optical energy loss of the bad and LED of effect backlight, in order to solve the problem of this optical energy loss, the employing thickness that has is the LED of 0.4mm, and the light-emitting window of the LED of this kind thickness does not almost have light loss less than the thickness of LGP, but that to be 0.6mm thick is low for the LED brightness ratio thickness that 0.4mm is thick, colourity is also relatively more yellow, is difficult to reach the effect of the inclined to one side indigo plant of present requirement, and the cost height of thicker than the 0.6mm far away LED of the cost of the thick LED of 0.4mm.

Summary of the invention

The purpose of this utility model is a kind of addressing the above problem of development, and is simple in structure, the LGP that is applicable to super-thin backlight of the little low energy consumption of light loss, high brightness.

The utility model is achieved through the following technical solutions:

Be applicable to the LGP of super-thin backlight, its spy is: the light inlet end face of LGP forms outstanding ramp structure, the thickness of outstanding ramp structure is the width of the LED light-emitting window of 0.6mm greater than thickness, light guide plate main body thickness satisfies ultra-thin dimensional requirement fully, when using, the light that LED sends enters light guide plate main body through the outstanding ramp structure of LGP light inlet end face, reaches purpose of design.

This reality is novel to have following advantage:

1, via enforcement of the present utility model, simple in structure, cost is low, and brightness effect is good, satisfies ultra-thin requirement.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1 is the structural representation of existing ultra-thin light guide board.

Fig. 2 is the structural representation of the utility model embodiment one.

Structural representation when Fig. 3 is the user mode of the utility model embodiment one.

Among the figure, 1 LGP, 11 light inlet end faces, 12 ramp structure, 13 light guide plate main bodies, 2LED, 21 light-emitting windows, 3 flexible PCBs, 4 double faced adhesive tapes of giving prominence to

The specific embodiment

The LGP that is applicable to super-thin backlight of the present utility model shown in Fig. 2 and Fig. 3, its spy is: the light inlet end face (11) of LGP (1) forms outstanding ramp structure (12), the thickness of outstanding ramp structure (12) is the width of LED (2) light-emitting window (21) of 0.6mm greater than thickness, light guide plate main body (13) thickness satisfies ultra-thin dimensional requirement fully, when using, LED (2) is welded on the flexible PCB (3), and with double faced adhesive tape (4) bonding and reinforcement, the light that LED (2) sends enters light guide plate main body (13) through the outstanding ramp structure (12) of LGP (1) light inlet end face (11), reaches purpose of design.

In Fig. 1, direction shown in the arrow is the direction that the light that sends of LED (2) penetrates from light-emitting window (21), and figure middle part beam split does not enter light guide plate main body (13) from the light inlet end face (11) of LGP (1), causes light loss.

In Fig. 3, direction shown in the arrow is that direction shown in the arrow is the direction that the light that sends of LED (2) penetrates from light-emitting window (21), among the figure light fully from the light inlet end face (11) of LGP (1) through outstanding ramp structure (12) enter light guide plate main body (13), reach purpose of design.

The utility model is simple in structure, and cost is low, and brightness effect is good, satisfies ultra-thin requirement, is widely used in the LGP field of super-thin backlight.

Claims

1. be applicable to the LGP of super-thin backlight, it is characterized in that: the light inlet end face (11) of LGP (1) forms outstanding ramp structure (12), and the thickness of outstanding ramp structure (12) is greater than the width of LED (2) light-emitting window (21).