CN101749666B - Light source layout structure of backlight module - Google Patents

Abstract

Translated fromChinese

本发明涉及一种背光模块的光源布设结构，主要特征是在导光板的相对两侧分别设置复数光源，且两侧的光源互为交错分布，以使投射进入导光板的光线能在导光板中传导分布得更均匀；所述光源可以设置在导光板的侧边缘，也可以设在导光板内而与侧边缘存在一距离，甚至位于导光板一侧板的光源与另一侧光源的光线投射方向可以具有一夹角，均能达到让导光板的发光均匀化的目的。

The present invention relates to a light source arrangement structure of a backlight module, the main feature of which is that a plurality of light sources are respectively arranged on two opposite sides of a light guide plate, and the light sources on the two sides are staggered and distributed with each other, so that the light projected into the light guide plate can be transmitted and distributed more evenly in the light guide plate; the light source can be arranged at the side edge of the light guide plate, or it can be arranged inside the light guide plate and at a distance from the side edge, and even the light source located on one side of the light guide plate can have an angle with the light projection direction of the light source on the other side, so as to achieve the purpose of making the light of the light guide plate uniform.

Description

The light source layout structure of backlight module

Technical field

The present invention relates to a kind of backlight module, relate in particular to a kind of light source layout structure of backlight module.

Background technology

The application of backlight module is very general, as mobile computer, display, mobile phone, LCD TV ... wait the not irradiative electronic equipment of display itself all to need backlight module that light source is provided.

General backlight module includes LGP and light source; For the electronic product that the body thickness requirement approaches; Typically use LED as light source, and this light source is located at the side of LGP, first side of LGP then is provided with a reflector plate; Second side surface opposite then is provided with the plural blooming piece of being made up of diffusion sheet and prismatic lens etc., and the periphery in those assemblies surrounds with a housing again.The light that light source sent is got into by the side projection of LGP, and part light is reflected by reflector plate, penetrates through diffusion sheet and prismatic lens in regular turn again.

For the less backlight module of size, because the area of LGP is less, so only need get final product at the side installation light source of LGP; But for larger-size backlight module, if light source only is installed in LGP one side, then the light behind the projection entering LGP can be decayed when being transmitted to opposite side gradually; Cause the situation of the brightness irregularities of LGP; Therefore, can light source all be installed in large-area LGP both sides usually, to improve the problem of aforementioned one-sided light source.

Visible by Fig. 5: as to be the relative dual-side that a plurality of ledlight sources 2 is installed in a LGP 1 respectively; And thelight source 2 of dual-side is symmetrical relatively, therefore, and during light source projects light; Along being easy to generate the low problem of brightness between the light source of directions X, cause the brightness irregularities of whole LGP.

Summary of the invention

The technical issues that need to address of the present invention have provided a kind of light source layout structure of backlight module, are intended to solve the above problems.

In order to solve the problems of the technologies described above, the present invention realizes through following technical scheme:

The present invention includes: a LGP, plural light source; Described plural light source is laid in the relative both sides of this LGP respectively, and the light source of these both sides is interspersed each other, so that the both sides projection of light from this LGP got in the LGP.

Compared with prior art, the invention has the beneficial effects as follows: be that the light source of being located at the LGP both sides is changed its relative position, the light that lets projection get in the LGP can be taken into account comprehensively, thereby reaches the purpose of brightness uniformity.

Description of drawings

Fig. 1 lays plural light source for demonstration the present invention respectively at the relative dual-side of LGP, and the first interlaced embodiment synoptic diagram of this both sides light source.

Fig. 2 lays a plurality of light sources that lay respectively at relative both sides for demonstration the present invention in LGP, and the second interlaced embodiment synoptic diagram of this both sides light source.

Fig. 3 lays a plurality of light sources that lay respectively at relative both sides for demonstration the present invention in LGP, and this LGP dual-side further is provided with the 3rd embodiment synoptic diagram of optical texture.

Fig. 4 lays plural light source for showing the present invention respectively at the relative dual-side of LGP, and wherein the ray cast direction of the light source of light source and the opposite side of a side forms the 4th embodiment synoptic diagram of an angle.

Fig. 5 is that light source is the synoptic diagram that is laid in the relative both sides of LGP symmetrically for showing backlight module of the prior art.

Embodiment

Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:

Fundamental purpose of the present invention is to solve the laying structure of the light source of aforementioned backlight module of the prior art at LGP, can cause the disappearance of brightness irregularities.

Principal character of the present invention is that the light source of being located at the LGP both sides is changed its relative position, and the light that lets projection get in the LGP can be taken into account comprehensively, thereby reaches the purpose of brightness uniformity.

A wherein technological means of the present invention is the relative both sides of the edge that plural light source are laid in this LGP respectively, and the light source of these both sides is interspersed each other, so that the relative both sides projection of light from LGP got in the LGP.

A technological means more of the present invention is that plural light source is laid in respectively in the relative both sides of this LGP, and has a distance with the relative both sides of the edge of this LGP, and the light source of these both sides is interspersed each other.

Another technological means of the present invention is to be located at LGP when inner at light source, can also be provided with in the relative both sides of the edge of LGP can reflection ray optical texture, to remedy the brightness between light source back and the LGP edge; Said optical texture can also can be located at the position at corresponding light source place, LGP both sides of the edge along whole length distribution of these LGP both sides of the edge; Said optical texture can be formed by plural sawtooth, prominent point or concave point arrangement.

Another technological means of the present invention; Be to be provided with light source at the LGP dual-side; Wherein the ray cast direction of the light source of a side has an angle with the ray cast direction of the light source of relative opposite side; The distance that can remedy two adjacent light sources thus not simultaneously, the luminance difference that LGP produced.

Embodiment 1

Consult Fig. 1, the first embodiment of the present invention is the relative both sides of the edge thatplural light source 2 are laid in a LGP 1 respectively; And thelight source 2 of these both sides is interspersed each other; So that the relative both sides projection of light from LGP got in the LGP, lay mode thus, after ray cast gets into LGP; Can reach more extensively, average covering, thereby make LGP have brightness more uniformly.

Embodiment 2

Consult Fig. 2; The second embodiment of the present invention is thatplural light source 2 is laid in respectively in the relative both sides of a LGP 1, and has one apart from S with the relative both sides of the edge of this LGP 1; And thelight source 2 of these both sides is interspersed each other; Therefore, the light source of a side can be with ray cast to relative opposite side, and constitutes the wider zone of a coverage.

Embodiment 3

Consult Fig. 3; The third embodiment of the present invention is the structure that follows aforementioned second embodiment, also is about in the relative both sides thatplural light source 2 is laid in a LGP 1 respectively; And have one apart from S with the relative both sides of the edge of this LGP 1, and thelight source 2 of these both sides is interspersed each other; But can also be provided with in the relative both sides of the edge of LGP 1 can reflection rayoptical texture 11; Makelight source 2 be projected to a relative rear flank; Can be byoptical texture 11 with the light reflection, to remedy the deficiency that possibly can't directly be caused brightness betweenlight source 2 back and LGP 1 edge by ray cast.Saidoptical texture 11 can also can be located at the position at LGP both sides of the edgecorresponding light source 2 places along whole length distribution of LGP 1 both sides of the edge; Said optical texture can be formed by plural sawtooth, prominent point or concave point arrangement.At embodiment shown in Figure 3, thisoptical texture 11 is to be arranged by plural sawtooth to form, and only is arranged on the LGP edge ofcorresponding light source 2 rear positions.

Embodiment 4

Consult Fig. 4, the fourth embodiment of the present invention is to be provided withplural light source 2 at LGP 1 dual-side; And thelight source 2 of these both sides is interspersed each other, and wherein the ray cast direction of the light source 2a of a side has an angle, the angle of inclination of this oblique light source 2a with the ray cast direction of thelight source 2 of relative opposite side; And two distance between the light source 2a; Can adjust according to actual needs, the distance that can remedy twoadjacent light sources 2 thus not simultaneously, the luminance difference that LGP produced; Reach more extensively, average covering, make LGP have brightness more uniformly.

The above is merely in order to explain preferred embodiment of the present invention; Be not that attempt is done any pro forma restriction to the present invention according to this; Therefore, all have following of identical spirit do relevant any modification or change, all must be included in the scope that the invention is intended to protect.

Claims (6)

Translated fromChinese

1.一种背光模块的光源布设结构，包括：一导光板，复数光源；其特征在于：所述的复数光源分别布设于该导光板的相对两侧，且该两侧的光源互为交错分布，以将光线从该导光板的两侧投射进入导光板内；所述光源设于该导光板内，并与该导光板的相对两侧边缘具有一距离；所述导光板的相对两侧边缘设有反射光线的光学结构；该导光板一侧的光源的光线投射方向与该侧导光板的边缘倾斜设置，该侧的光源的倾斜方向一致且相对另一侧的光源的光线投射方向具有一夹角。1. A light source layout structure of a backlight module, comprising: a light guide plate and a plurality of light sources; it is characterized in that: the plurality of light sources are respectively arranged on opposite sides of the light guide plate, and the light sources on the two sides are interlaced with each other , so as to project light into the light guide plate from both sides of the light guide plate; the light source is arranged in the light guide plate, and has a distance from the opposite side edges of the light guide plate; the opposite side edges of the light guide plate An optical structure for reflecting light is provided; the light projection direction of the light source on one side of the light guide plate is inclined to the edge of the light guide plate on the side, and the inclination direction of the light source on this side is consistent with the light projection direction of the light source on the other side. angle.2.根据权利要求1所述的背光模块的光源布设结构，其特征在于：所述光学结构沿着该导光板两侧边缘的全部长度分布。2 . The light source layout structure of the backlight module according to claim 1 , wherein the optical structures are distributed along the entire length of the two side edges of the light guide plate. 3 .3.根据权利要求1所述的背光模块的光源布设结构，其特征在于：所述光学结构设在该导光板两侧边缘对应该光源所在的位置。3 . The light source arrangement structure of the backlight module according to claim 1 , wherein the optical structure is arranged at the positions corresponding to the light sources on the two side edges of the light guide plate. 4 .4.根据权利要求1或2或3所述的背光模块的光源布设结构，其特征在于：所述光学结构是由复数锯齿排列而成。4. The light source arrangement structure of the backlight module according to claim 1, 2 or 3, wherein the optical structure is formed by a plurality of sawtooth arrangements.5.根据权利要求1或2或3所述的背光模块的光源布设结构，其特征在于：所述光学结构是由复数突点排列而成。5 . The light source arrangement structure of the backlight module according to claim 1 , 2 or 3 , wherein the optical structure is formed by arranging a plurality of bumps. 6 .6.根据权利要求1或2或3所述的背光模块的光源布设结构，其特征在于：所述光学结构是由复数凹点排列而成。6. The light source arrangement structure of the backlight module according to claim 1, 2 or 3, wherein the optical structure is formed by arranging a plurality of concave points.

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