CN2802545Y

CN2802545Y - Light guide structure of direct backlight mould set

Info

Publication number: CN2802545Y
Application number: CN 200520109894
Authority: CN
Inventors: 曾文保
Original assignee: K Bridge Electronics Co Ltd
Current assignee: K Bridge Electronics Co Ltd
Priority date: 2005-06-16
Filing date: 2005-06-16
Publication date: 2006-08-02
Anticipated expiration: 2015-06-16

Abstract

The utility model relates to a light guiding structure of a backlight module set, which is matched and provided with a reflecting cover, a plurality of light sources, a diffuser plate, a plurality of optical membranes and a liquid crystal panel orderly form the inside to the outside, wherein a plurality of light guiding multi-angle conical bodies of the diffuser plate are formed on an incident face and an emergent face, so light rays of the light sources can be arranged by the multi-angle conical bodies of the diffuser plate. The passing light rays can be diffused by the light guiding multi-angle conical bodies at least two times, and the light rays of the light sources can be more effectively allocated.

Description

The light guide structure of down straight aphototropism mode set

Technical field

The utility model relates to the light guide structure of module backlight, and particularly a kind of Ying Yu is in the light guide structure of down straight aphototropism mode set.

Background technology

Pressing, generally be applied in the LCD of information device, is can be according to the demand of actual design, and selects to utilize the module framework backlight of straight-down negative or side-light type; As shown in Figure 1, be the basic structure synoptic diagram of a direct-type backlight module framework, it is to be equipped with a reflection shield 10, some light sources 20, diffuser plate 30, several pieces of blooming pieces 40, and liquid crystal panel 50 from inside to outside in regular turn that the structure of whole module backlight is formed; Wherein, each light source 20 can be the fluorescent tube of vertical bar shape or U type or other continuous bending shapes and is laid between reflection shield 10 and the diffuser plate 30 with distance between suitable, and the display effect of its liquid crystal module promptly is made of the light that each light source 20 sheds; And several blooming pieces 40 of 50 of also common on the market this diffuser plate 30 and liquid crystal panels can by 1～3 diffusion sheet, 0～2 brightening piece, 0～1 reflecting polarized wafer etc. mutually collocation form, its effect is to make the light that passes through form diffusion, use improvement and produce because of dull thread at the position at interval, and on liquid crystal module, form phenomenon bright, the blanking bar zone over against light source 20.

Again, because the effect of diffuser plate 30 only evenly sheds at the light that order is passed through, liquid crystal module is bright for improving, the effect of blanking bar district phenomenon is limited, therefore be that some module backlight elongates painstakingly that the crack reaches the purpose of dwindling dim zone in the hope of enlarging the scope that each light source 20 enters diffuser plate 30 between light source 20 and the diffuser plate 30; Yet so not only effect is quite limited for structural design, and the thickness of module backlight will be increased, and disagrees with the lightening design original intention of liquid crystal module.

The utility model content

In view of this, the light guide structure of the utility model down straight aphototropism mode set is to be equipped with a reflection shield, some light sources, diffuser plate, several pieces of blooming pieces from inside to outside in regular turn, and liquid crystal panel; Wherein, diffuser plate is formed with a plurality of leaded light multiple-angle pyramids on the plane of incidence and exit facet, before making the light of light source inject liquid crystal panel, be able to leaded light multiple-angle pyramid setting by this diffuser plate, the light that passed through of order is used the dim zone of eliminating between each light source at least through the diffusion of twice leaded light multiple-angle pyramid, with more initiatively, positive means, effective solution is commonly used module backlight and is obviously presented problem bright, the blanking bar district, can more effectively distribute the light of light source.

Description of drawings

Fig. 1 is for commonly using the structural representation of down straight aphototropism mode set;

Fig. 2 is the light guide structure application configuration constitutional diagram for the utility model down straight aphototropism mode set;

Fig. 3 is the three-dimensional exploded view for the utility model down straight aphototropism mode set;

Fig. 4 A, B are another structural perspective for light guide structure in the utility model;

Fig. 5 A, B are the structural perspective again for light guide structure in the utility model;

Fig. 6 A, B are the another structural perspective for light guide structure in the utility model.

[figure number explanation]

10 reflection shields

20 light sources

30 diffuser plates

31 planes of incidence

32 exit facets

33 leaded light multiple-angle pyramids

40 blooming pieces

50 liquid crystal panels

Embodiment

For the clear structure of the present utility model of your auditor is formed, and the overall operation mode, cooperate graphic being described as follows now:

The utility model downward back optical mode and light guide structure, application assembling mode when the basic structure composition of its light guide structure and enforcement as shown in Figure 2, whole down straight aphototropism mode set is to be equipped with a reflection shield 10, some light sources 20, diffuser plate 30, several pieces of blooming pieces 40 and liquid crystal panel 50 from inside to outside in regular turn equally, these several pieces of blooming pieces 40 can by 1～3 diffusion sheet, 0～2 brightening piece, 0～1 reflecting polarized wafer etc. mutually collocation form; Wherein, each light source 20 can be the fluorescent tube of vertical bar shape or U type or other continuous bending shapes and is laid between reflection shield 10 and the diffuser plate 30 with suitable spacing, or be arranged between reflection shield 10 and the diffuser plate 30 with suitable spacing by light-emittingdiode, as shown in Figure 3, the display effect of its liquid crystal module promptly is made of the light that each light source 20 sheds.

It focuses on: diffuser plate 30 is provided with a plurality of leaded light multiple-angle pyramids 33 in the plane of incidence 31 and exit facet 32, and in present embodiment, the spacing of each leaded light multiple-angle pyramid 33 is to be less than or equal to 1mm, before so soon the light of each light source 20 will be injected liquid crystal panel 50, be able to be provided with by the leaded light multiple-angle pyramid 33 of this diffuser plate 30, the light that passed through of order is at least through the diffusion of twice leaded light multiple-angle pyramid 33, to allow whole module backlight produce the brightness expression effect of expection and to be able to more initiatively, positive means are eliminated the dusk-blanking bar district that forms between each light source, can more effectively distribute the light of light source.

Please cooperate simultaneously with reference to Fig. 3 and Fig. 4 A, shown in the B, each leaded light multiple-angle pyramid 33 is can be by several outstanding structures as shown in the figure, and in present embodiment, the height of each leaded light multiple-angle pyramid 33 is to be less than or equal to 0.5mm, or several pit structures are (as Fig. 4 A, shown in the B) constitute, the degree of depth of each leaded light multiple-angle pyramid 33 is to be less than or equal to 05mm, being arranged at can rule be made or pit structure is designed to the structural form that one extends whole configuration position with giving prominence to, also or be the leaded light multiple-angle pyramid of different curve combination, as Fig. 5 A, shown in the B, the leaded light multiple-angle pyramid 33 that is constituted by curved surface A and curved surface B, the arrangement of its each leaded light multiple-angle pyramid 33 can be as Fig. 3 to Fig. 5 A, B is depicted as discontinuous form, also can be as Fig. 6 A, B is depicted as continuous shape and arranges, and all can form diffusion to the light that is passed through.

As mentioned above, the utility model provides down straight aphototropism mode set one preferable feasible light guide structure, so offer the application of novel patent in accordance with the law; Yet, above implementation and graphic shown in, be the utility model preferred embodiment, be not to limit to the utility model with this, be with, approximate with structure of the present utility model, device, feature etc. such as, identical person all should belong to of the present utility model founding within purpose and the claim.

Claims

1, a kind of light guide structure of down straight aphototropism mode set, its module backlight are to join one from inside to outside in regular turn to be provided with a reflection shield, some light sources, diffuser plate, several pieces of blooming pieces, and liquid crystal panel; It is characterized in that:

Be formed with a plurality of leaded light multiple-angle pyramids on this diffuser plate plane of incidence and the exit facet.

2, as the light guide structure of down straight aphototropism mode set as described in the claim 1, it is characterized in that, each light source be for the fluorescent tube of vertical bar shape or U type or other continuous bending shapes and with between suitably apart from being laid between reflection shield and the diffuser plate.

3, as the light guide structure of down straight aphototropism mode set as described in the claim 1, it is characterized in that each light source is to be arranged between reflection shield and the diffuser plate with suitable spacing for light-emittingdiode.

As the light guide structure of down straight aphototropism mode set as described in the claim 1, it is characterized in that 4, each leaded light multiple-angle pyramid is made of the outstanding structure that one extends this position.

As the light guide structure of down straight aphototropism mode set as described in the claim 1, it is characterized in that 5, the outer pit structure institute that extends this position by one of each leaded light multiple-angle pyramid is constituted.

As the light guide structure of down straight aphototropism mode set as described in the claim 1, it is characterized in that 6, each leaded light multiple-angle pyramid is made of the different curve that one extends this position.

7, as the light guide structure of down straight aphototropism mode set as described in the claim 1, it is characterized in that the spacing of each leaded light multiple-angle pyramid is to be less than or equal to 1mm.

8, as the light guide structure of down straight aphototropism mode set as described in the claim 4, it is characterized in that the height of each leaded light multiple-angle pyramid is to be less than or equal to 0.5mm.

9, as the light guide structure of down straight aphototropism mode set as described in the claim 5, it is characterized in that the degree of depth of each leaded light multiple-angle pyramid is to be less than or equal to 0.5mm.