CN201072452Y

CN201072452Y - Mold insert structure of light conducting plate and light conducting plate structure formed by the same

Info

Publication number: CN201072452Y
Application number: CNU2006201605962U
Authority: CN
Inventors: 蔡荣智; 林时正; 陈冠龙
Original assignee: Taiwan Nano Electro Optical Technology Co Ltd
Current assignee: Fuxiang Industrial Co., Ltd.
Priority date: 2006-11-30
Filing date: 2006-11-30
Publication date: 2008-06-11
Anticipated expiration: 2016-11-30

Abstract

The utility model relates to a mould kernel, which is arranged in a male die and a female die. The male and female dies after die assembly form a die cavity, which is used as molding space of a light guide plate; wherein, at least one brink of the periphery of the mould kernel forms a blank space and an optical micro-structure is formed beyond the blank space. The mould kernel is used for forming the light guide plate by means of emitting molding or hot pressing, so the mould kernel corresponding to the light guide plate also form an optical micro-structure and a blank space, which is arranged at least one brink of the periphery of the light guide plate, and the blank space is reserved corresponding to the size of panel watching region, which causes the brink of the panel watching region not to generate light over reflection or influence the effect of the uniformity of emitting light.

Description

Light guiding board mould core structure and its formed light conducting plate structure

Technical field

The utility model aims to provide a kind of light guiding board mould core structure that is applied to liquid crystal indicator about light guiding board mould core structure and its formed light conducting plate structure.

Background technology

In recent years, along with the colorize and the maximization of LCD, its application is more extensive, as mobile computer, various desk-top computer, LCD TV etc.Because of a kind of passive component of LCD, itself can not be luminous, thereby need utilize the light source of a light-source system as LCD, as backlight module (Backlight Module), wherein, light guide plate is one of significant components in the backlight module, and the transmission direction in order to guiding emits beam from light source converts line source or pointolite to the area source ejaculation.

General light guide plate 1 as shown in Figure 1, at least include an incidence surface 11, one and the reflecting surface 12 that intersects of this incidence surface 11, an and exiting surface 13 relative with this reflecting surface 12, for improving the homogeneity that light source penetrates, generally be provided with optical microstructures 2 in light guide plate reflecting surface 12 and exiting surface 13, as the V-groove structure, in order to destroy light in the total reflection condition of light guide plate internal transmission, and make the homogeneity of its scattering, and then promote the overall performance of backlight module with raising light guide plate outgoing beam.

At present, the manufacture method of light guide plate optical microstructures roughly has following several: screen painting formula, sandblast and etching formula, machining formula and photoresistance photoetching mold formula, wherein photoresistance photoetching mold formula is with the photoresistance coated substrates, photoresistance is after exposure, being developed in the shape of the optical microstructures that is shaped on the substrate, turn over mould mode moulding one die with electroforming again, utilize die to penetrate or hot pressing mode formed light conductive plate again with plastics.

Yet, the die structure of moulding should be laid with optical microstructures on the surface, to such an extent as to also on average be laid with relative optical microstructures on the light guide plate surface of moulding, when this light guide plate is applied in the LCD, as shown in Figure 2, the panel of this LCD is viewed and admired scope A less than light guide plate 1, and light guide plate 1 each avris, the optical microstructures 2 of viewing and admiring scope A near panel then can influence the homogeneity that panel is viewed and admired light among the scope A during with light refraction.

The utility model content

In view of this, the purpose of this utility model is to provide a kind of light guiding board mould core structure that is applied to liquid crystal indicator.

Die of the present utility model is installed in the male and female mould, behind its male and female mould matched moulds and be formed with a die cavity, with the molding space as light guide plate; Wherein, at least one avris is formed with and stays white region around this die, differs from and stays white region then to be formed with optical microstructures.

Wherein, utilize this die to form light guide plate with ejection formation or hot pressing mode, make this light guide plate correspond to die and be formed with optical microstructures equally and stay white region, and this stays white region can be arranged at light guide plate at least one avris (can be arranged at one side, two limits, three limits or four limits) on every side.

The beneficial effects of the utility model are: make this stay white region can cooperate panel to view and admire the size setting of scope, make panel view and admire the scope avris and can not produce light and excessively reflect, and the inhomogeneity effect of light is penetrated in influence.

Description of drawings

Fig. 1 is for practising the structural perspective that light guide plate is arranged;

Fig. 2 has light guide plate to be applied to the structural representation of LCD for practising;

Fig. 3 is the structural representation of light guide plate forming mould in the utility model;

Fig. 4 is the structural perspective of die in the utility model;

Fig. 5 is the structural perspective of light guide plate in the utility model;

Fig. 6 is applied to the structural representation of LCD for light guide plate in the utility model.

[figure number explanation]

The A panel is viewed and admired scope 1 light guide plate

11 incidence surfaces, 12 reflectings surface

13 exiting surfaces 14 stay white region

2 optical microstructures, 3 dies

31 stay white region 41 male models

42 master molds, 43 die cavitys

44 sprues, 5 sheet metals

Embodiment

The utility model light guiding board mould core structure, its forming die structure as shown in Figure 3, after it includes a light guiding board mould core 3 and is fixed on the sheet metal 5, and be installed in the male and female mould 41,42, as shown in the figure, behind its male and female mould 41,42 matched moulds and be formed with a die cavity 43, and this die cavity 43 communicates with sprue 44, injects the resin of fusion through sprue 44, and the resin that makes injection is after die cavity 43 coolings, the structure of light guide plate is then finished in 41,42 demouldings of male and female mould; Certainly, this die cavity 43 is the molding space of light guide plate, and it can as shown be the form of wedge shape, can also be plate shaped form.

Focusing on of this case: at least one avris is formed with and stays white region 31 around this die 3, that is stay white region 31 that any optical microstructures is not set in this, be planar structure, this stays white region 31 can be arranged at die 3 one side, two limits, three limits or four limits on every side, among the embodiment as shown in Figure 4, it stays white region 31 to be located at die 3 four avris places on every side, differ from and stay white region 31 then to be formed with optical microstructures 2, its optical microstructures 2 can be the plurality of V-shaped groove structure, can also be U type groove structure.

Utilize the light conducting plate structure of this die institute moulding can be as shown in Figure 5, this light guide plate 1 includes an incidence surface 11 equally at least, one reflecting surface 12 that intersects with this incidence surface 11, an and exiting surface 13 relative with this reflecting surface 12, and around this light guide plate 1 at least one avris (as being arranged on one side, two limits, three limits or four limits) be formed with and stay white region 14, differ from and stay white region 14 then to be formed with optical microstructures 2, as shown in the figure, this optical microstructures 2 can and be arranged at reflecting surface 12 and exiting surface 13 for the some grooves of V-type, and the optical microstructures on this reflecting surface 12 and the exiting surface 13 becomes X respectively, the Y direction is arranged.

What deserves to be mentioned is, utilize the light conducting plate structure of die moulding of the present utility model, at least one avris is formed with and stays white region 14 around its light guide plate 1, when being applied in the LCD, as shown in Figure 6, this stays white region 14 can cooperate panel to view and admire the size setting of scope A, make panel view and admire scope A avris and can not produce light and excessively reflect, and the inhomogeneity effect of light is penetrated in influence.

As mentioned above, the utility model provides light guide plate another preferable feasible die 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., identical such as, all should belong to of the present utility model founding within purpose and the claim.

Claims

1. light guiding board mould core structure, its this light guiding board mould core is installed in the male and female mould, behind its male and female mould matched moulds and be formed with a die cavity, with the molding space as light guide plate; It is characterized in that:

At least one avris is formed with and stays white region around this die, differs from and stays white region then to be formed with optical microstructures.

2. light guiding board mould core structure according to claim 1 is characterized in that this optical microstructures is some grooves.

3. as light guiding board mould core structure as described in the claim 2, it is characterized in that, but this groove V or U type groove structure.

4. light guiding board mould core structure according to claim 1 is characterized in that, this stays white region to be arranged at one side around the die, two limits, three limits or four limits.

5. light guiding board mould core structure according to claim 1 is characterized in that this die cavity is a wedge shape or plate shaped.

6. one kind is utilized the formed light conducting plate structure of light guiding board mould core structure as claimed in claim 1, and this light guide plate includes an incidence surface, one and the reflecting surface that intersects of this incidence surface at least, and an exiting surface relative with this reflecting surface; It is characterized in that:

At least one avris is formed with and stays white region around this light guide plate, differs from and stays white region then to be formed with optical microstructures.

7. as light conducting plate structure as described in the claim 6, it is characterized in that this optical microstructures is some grooves.

8. as light conducting plate structure as described in the claim 6, it is characterized in that this optical microstructures is located at reflecting surface and exiting surface.

9. as light conducting plate structure as described in the claim 6, it is characterized in that the optical microstructures on this reflecting surface and the exiting surface becomes X, Y direction to arrange respectively.

10. as light conducting plate structure as described in the claim 6, it is characterized in that this stays white region can be arranged at one side around the light guide plate, two limits, three limits or four limits.