CN200975637Y

CN200975637Y - Improved structure of light conducting plate

Info

Publication number: CN200975637Y
Application number: CN 200620160092
Authority: CN
Inventors: 蔡荣智; 张庆辉
Original assignee: Taiwan Nano Electro Optical Technology Co Ltd
Current assignee: Fuxiang Industrial Co., Ltd.
Priority date: 2006-11-28
Filing date: 2006-11-28
Publication date: 2007-11-14
Anticipated expiration: 2016-11-28

Abstract

The utility model relates to an improved structure of light conducting plate whose upper and lower plate surface are provided with a successive sawtooth trench type light gathering prism mechanism. The light gathering prism mechanism of the upper and lower plate surfaces is arranged in X and Y direction; the light guide plate is provided with a subtle pattern in the corner area, and each pattern can selectively be arranged at the plate surface part of the light guide plate and the plat edge part of the light receiving surface, or the plate edge part bordering upon the light receiving surface; of course, each pattern also can be simultaneously arranged at the plate surface part of the light guide plate and the plat edge part of the light receiving surface and the plate edge part bordering upon the light receiving surface; the patterns arranged in the area is used for the optics mechanism applied to increase refraction, thereby increasing the reflection effect in the corner area of the light guide plate and effectively solving the problem that illumination is not uniform in the corner area of the LCD.

Description

The structural improvement of LGP

Technical field

The utility model aims to provide a kind of can effectively the solution and commonly uses LGP because the corner areas reflecting effect is relatively poor at the improvement of the light conducting plate structure in the middle of the backlight illuminating unit, causes the light conducting plate structure of the bright dark inequality in LCD corner.

Background technology

General LCD (Liquid Crystal Display, LCD) backlight illuminating unit (Back Light Unit, BLU) basic structure is formed as shown in Figure 1, by LGP (LGP) 11, be located at the luminescence component 12 (CCFL for example: Cold Cathode Fluorescemt Lamp of LGP 11 plate edge positions, CCFL), be located at the reflection diaphragm 13 of LGP 11 belows, and the assemblies of being located between LGP 11 and the display floater 20 such as diffusion barrier sheet 14 constitute.

Wherein, the major function of LGP 11 is to convert the light that directly advances of luminescence component 12 incidents to vertical plane light by light principle at random, but in order to reach all effects of light of scattering, usually between diffusion barrier sheet 14 and display floater 20, can be equipped with two diaphragms 15 that add lustre to, and be provided with light harvesting prism mechanism 151 (light harvesting prism mechanism is continuous sawtooth channel form) in diaphragm 15 upper faces that respectively add lustre to, with the equal effect of light of scattering; Yet, the use of diaphragm of adding lustre to has in addition not only increased cost, and the leaded light in the LGP 11 is that total reflection causes, by the light of LGP 11 ejaculations and the plate face of the whole LGP 11 that can't distribute fully, as shown in Figure 2, the LGP of generally commonly using 11 promptly can relatively poor because of the corner areas reflecting effect (forming so-called dark angle), causes the bright dark inequality in LCD corner.

The utility model content

In view of this, the purpose of this utility model is to provide a kind of can effectively the solution to commonly use LGP because the corner areas reflecting effect is relatively poor, causes the light conducting plate structure of the bright dark inequality in LCD corner.

The upper and lower plate face construction of the utility model LGP has the light harvesting prism mechanism that is continuous sawtooth channel form, and the light harvesting prism mechanism of this upper and lower plate face becomes X, Y direction to arrange respectively; The corner areas of LGP is provided with trickle pattern, and each pattern can optionally be distributed in the facial position of plate of LGP, the plate edge position of sensitive surface, or the plate edge position adjacent with sensitive surface; Certainly, can also be distributed in the facial position of plate of LGP, the plate edge position of sensitive surface simultaneously, and the plate edge position adjacent with sensitive surface, by being distributed in this regional pattern as the optics mechanism that increases refraction.

The beneficial effects of the utility model are: can increase the reflecting effect of LGP corner areas, effectively solve the problem of the bright dark inequality in LCD corner.

Description of drawings

Fig. 1 forms Organization Chart for the backlight liquid crystal display lighting unit;

Fig. 2 is a light reflection state schematic diagram of commonly using LGP;

Fig. 3 is a LGP plane structure chart of the present utility model;

Fig. 4 is the pattern equipping position schematic diagram of the utility model first embodiment;

Fig. 5 is the pattern equipping position schematic diagram of the utility model second embodiment;

Fig. 6 is the pattern equipping position schematic diagram of the utility model the 3rd embodiment;

Fig. 7 is the structural representation of light harvesting prism mechanism among Fig. 6.

[figure number explanation]

11 LGPs, 111 light harvesting prism mechanism

112 patterns, 12 luminescence components

13 reflection diaphragms, 14 diffusion barrier sheets

The 15 diaphragm 151 light harvesting prism mechanism of adding lustre to

20 display floaters, 31 first hypotenuses

311 first angles, 32 second hypotenuses

321 second angles

The specific embodiment

The structural improvement of the utility model LGP, directly advance the assembly that light converts vertical plane light to luminescence component incident in the middle of its LGP backlight illuminating unit, as shown in Figure 3, in the specific implementation, LGP 11 can be by the manufacturing of acryl material, and directly last, the lower face construction has the light harvesting prism mechanism 111 that is continuous sawtooth channel form, it is located on the LGP 11, the light harvesting prism mechanism 111 of lower face becomes X respectively, the Y direction is arranged, for example be located at light harvesting prism 111 one-tenth arranged verticals of mechanism of upper face and have angle, the light harvesting prism mechanism 111 of lower face then forms horizontal and has angle, allow the light that directly advances of luminescence component 12 incidents convert to after the vertical plane light through LGP 11, light harvesting prism mechanism 111 through LGP 11 plate faces makes light at X again, Y direction light harvesting is also adjusted the divergence of beam angle, and have optically focused, add lustre to and the equal effect of light of scattering.

It focuses on: the corner areas of LGP 11 is provided with trickle pattern 112, its pattern 112 can be the form of site, be arranged on the LGP 11 with recessed or protrusion, the configuration mode of each pattern can be as Fig. 4 to shown in Figure 6, optionally be distributed in the facial position of plate (as shown in Figure 4) of LGP 11, the plate edge position (as shown in Figure 5) of sensitive surface in the mode of printing, or the plate edge position (as shown in Figure 6) adjacent with sensitive surface; Certainly, can also be distributed in the facial position of plate of LGP, the plate edge position of sensitive surface simultaneously, and the plate edge position adjacent with sensitive surface.

According to this, can be by the pattern 112 that is distributed in this zone (the plate edge of LGP corner, panel zone) as the optics mechanism that increases the light refraction effect, and can increase the reflecting effect of LGP 11 corner areas, effectively solve the problem of the bright dark inequality in LCD corner.

In addition, each light harvesting prism mechanism 111 can have different forms, as Fig. 4 and shown in Figure 5, the light harvesting prism of its upper face 111 one-tenth arranged verticals of mechanism and have angle, the light harvesting prism mechanism 111 of lower face then forms horizontal and has angle, and this light harvesting prism mechanism 111 is one group for per three dentate grooves, and has and be spaced; As Figure 6 and Figure 7, the light harvesting prism of its upper face 111 one-tenth arranged verticals of mechanism and have angle, the light harvesting prism mechanism 111 of lower face then forms horizontally, its light harvesting prism mechanism 111 has the continuous sawtooth groove of first and

second hypotenuse

31,32, and its first and

second hypotenuse

31,32 and LGP 11 form first and second angle 311,321 of different angles.

As mentioned above, the utility model provides backlight illuminating unit another preferable feasible light conducting plate structure, then offer in accordance with the law novel patent in please; 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, a kind of structural improvement of LGP is characterized in that, the upper and lower plate face construction of this LGP has the light harvesting prism mechanism that is continuous sawtooth channel form, and the light harvesting prism mechanism of this upper and lower plate face becomes X, Y direction to arrange respectively;

The corner areas of this LGP is laid with trickle pattern.

2, the structural improvement of LGP as claimed in claim 1 is characterized in that, this pattern distribution is in the facial position of the plate of LGP.

3, LGP as claimed in claim 1 is characterized in that, this pattern distribution is at the plate edge position of LGP sensitive surface.

4, the structural improvement of LGP as claimed in claim 1 is characterized in that, this pattern distribution is at the LGP plate edge position adjacent with sensitive surface.

5, the structural improvement of LGP as claimed in claim 1 is characterized in that, this pattern is distributed in the facial position of plate of LGP, the plate edge position of sensitive surface with mode of printing, and the plate edge position adjacent with sensitive surface.

6, the structural improvement of LGP as claimed in claim 1 is characterized in that, this pattern is the form of site.

7, the structural improvement of LGP as claimed in claim 1 is characterized in that, this pattern is recessed into or protrudes and is arranged on the LGP.

8, the structural improvement of LGP as claimed in claim 1, it is characterized in that, the light harvesting prism machine of this upper face is made arranged vertical and is had angle, the light harvesting prism mechanism of lower face then forms horizontal and has angle, and this light harvesting prism mechanism is one group for per three dentate grooves, and has and be spaced.

9, the structural improvement of LGP as claimed in claim 1, it is characterized in that, the light harvesting prism machine of this upper face is made arranged vertical and is had angle, the light harvesting prism mechanism of lower face then forms horizontally, its light harvesting prism mechanism has the continuous sawtooth groove of first and second hypotenuse, and its first and second hypotenuse and LGP form first and second angle of different angles.