CN201016457Y

CN201016457Y - Backlight modular with highly uniform luminance degree

Info

Publication number: CN201016457Y
Application number: CNU2007200045173U
Authority: CN
Inventors: 江升晖
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-02-28
Filing date: 2007-02-28
Publication date: 2008-02-06
Anticipated expiration: 2017-02-28

Abstract

The utility model is a backlight module set which possesses high and even luminescence. The utility model mainly aims to solve the problem and limitation that the existing backlight module set does not have the capability of solving the insufficient luminescence and the evenness. The utility model is provided with a plurality of reflective pearlitic layers positioned on the surface of a reflective piece below a light-guiding board. The surface of each reflective pearlitic layer is provided with a plurality of granular reflective pearls. By making use of the light-accumulating, light increasing and reflecting effect of each reflective pearls, rays of light exposed from the bottom plane of the light guiding board are reflected and guided, efficiently and evenly, to the light guiding board, and the light source efficiency of the backlight module set and the practical performance of the even luminescence are achieved in the simplest manner.

Description

The module backlight of tool high uniform brilliance

Technical field

The relevant a kind of module backlight that applies to liquid crystal panel of the utility model refers to a kind of reflector plate design that enough improves the module backlight of reflection efficiency and uniform brilliance especially.

Background technology

See also shown in Figure 4, the module backlight 90 that generally applies to liquid crystal panel 50 consists predominantly of the light supply apparatus 93 that reflector plate (Reflector) 92, that a LGP (LGP) 91, is positioned at LGP 91 belows is located at LGP 91 side end, and a blooming piece (Prism sheet) 94 that is positioned at LGP 91 tops; So, behind the light source incident LGP 91 that is provided by light supply apparatus 93, see through the conduction of LGP 91 and the reflection of reflector plate 92, with light refraction to the liquid crystal panel 50 that is positioned at module backlight 90 tops, to provide liquid crystal panel 50 required light, and for keeping the light uniformity of whole liquid crystal panel 50, respectively be provided with a diffuser plate (Diffuser) 51 in the upper and lower side of liquid crystal panel 50.

Wherein, for improving the light source briliancy of liquid crystal panel 50, a plurality of prism sheet materials are set up in many dealer's propositions above LGP 91 method, but utilize the method that increases the prism sheet material like this, will cause that assembling trouble is time-consuming, cost is high, weight and volume increases and problem such as power consumption, is not a kind of suitable solution obviously; Moreover, see also TaiWan, China letters patent book number I247142 number " LGP that module backlight is used ", M243654 number " back light system ", M266469 number " improving the reflector plate structure of the down straight aphototropism mode set of reflection uniform luminance ", shown in M286939 number " the high briliancy of high efficiency is hanged down into the module backlight of plate " and the M300824 number patent cases such as " structural improvements of LGP ", the surface that many dealers are set forth in LGP or reflector plate is provided with the various leaded light structures that are the rough pattern configuration, issue additional the light source briliancy of module backlight by the even refraction action that improves light, but change the method for LGP or reflector plate surface configuration like this, will cause the manufacturing difficulty of LGP, problems such as bulking value increase and die cost height still are not a kind of good solutions.

Summary of the invention

The purpose of this utility model is to provide a kind of module backlight of tool high uniform brilliance, can solve the defective of the module backlight of available liquid crystal panel, can improve the light uniform brilliance of module backlight simply and effectively.

The purpose of this utility model is achieved in that a kind of module backlight of tool high uniform brilliance, and this module backlight comprises:

One LGP;

One reflector plate is located at the below of this LGP and in towards the surface of this LGP direction, is distributed with most reflecting beads layers, and the top layer of each reflecting beads layer is distributed with most granular reflecting beads;

Be located at the light supply apparatus of this LGP side more than one.

In the top of described LGP one blooming piece is set.

The density that is provided with of described each reflecting beads layer is along with the increase of the distance of described light supply apparatus and improve.

The spacing of adjacent described reflecting beads layer is to increase and dwindle along with the distance with described light supply apparatus.

The area of described reflecting beads layer is along with the distance with described light supply apparatus increases and increases.

The module backlight of tool high uniform brilliance of the present utility model, mode is provided with most reflecting beads layers in the reflector plate surface distributed of module backlight to utilize printing or paste etc., the top layer of each reflecting beads layer evenly is distributed with most the graininess reflecting beads that the incident ray reflection can be led back LGP, reach practical usefulness such as the source efficiency that improves module backlight and uniform brilliance, dark tool industry applications effectively in the simplest mode.

The module backlight of tool high uniform brilliance of the present utility model, advantage that can obtain and effect enhancement comprise at least:

1. reflecting beads layer of the present utility model is directly to be arranged at the surface of reflector plate to print or to paste mode, to distribute, the very easy easy and low cost of manufacture of processing and fabricating.

2. the utility model directly is provided with most reflecting beads layers in the surface printing distribution of reflector plate, not only can reach practical usefulness such as the source efficiency that improves module backlight and uniform brilliance, and can increase the weight and the volume of module backlight hardly, dark tool industrial utilization.

3. the utility model is in the evenly distributed majority reflecting beads that is provided with of each reflecting beads layer, utilize graininess reflecting beads spherical in shape optically focused, add lustre to and reflex, can LGP be led back in the light reflection of incident with the efficient of the best, significantly improve the source efficiency of module backlight.

4. the utility model can cooperate the needs of product design, changes the pattern form and the distributional pattern of each reflecting beads layer neatly, significantly improves the variability and the variation of product design.

Description of drawings

Fig. 1: the structure configuration schematic diagram of the utility model preferred embodiment.

Fig. 2: the schematic perspective view of the set reflector plate of the utility model preferred embodiment.

Fig. 3: the structural profile schematic diagram of the set reflector plate of the utility model preferred embodiment.

Fig. 4: the structure configuration schematic diagram of existing module backlight.

Drawing reference numeral:

10 module 11 LGPs backlight

12 reflector plates, 122 base materials

124 reflecting layer, 13 light supply apparatuses

14 blooming pieces

20 reflecting beads layers, 21 reflecting beads

22 bonding coats

50 liquid crystal panels, 51 diffuser plates

90 module 91 LGPs backlight

92 reflector plates, 922 base materials

924 reflecting layer, 93 light supply apparatuses

94 blooming pieces

The specific embodiment

The utility model provide the tool high uniform brilliance module backlight preferred embodiment as shown in Figure 1, this module 10 backlight includes the reflector plate 12 that a LGP 11, is positioned at LGP 11 belows, and two be located at the structures such as light supply apparatus 13 of end, LGP 11 two sides respectively, and a blooming piece 14 can further be set in the top of LGP 11; Wherein:

This LGP 11 is to have all light-permeable sheet material of usefulness such as light of conduction and scattering;

This reflector plate 12 is arranged at the below of LGP 11 and LGP 11 is led back in the light that LGP 11 bottom surfaces can be exposed reflection, as Fig. 2, shown in Figure 3, this reflector plate 12 is provided with a rigidity or the flexual base material 122 of tool, be provided with a reflecting layer 124 with scattered reflection material formation in base material 122 towards the surface-coated of LGP 11 directions, and according to the position of needs and each light supply apparatus 13 of product design, with printing or mode such as paste, be provided with most reflecting beads layers 20 in the reflecting layer of reflector plate 12 124 surface distributed, as shown in Figure 3, the top layer of each reflecting beads layer 20 evenly is distributed with the reflecting beads 21 of most form of spherical particles, each reflecting beads 21 is to utilize bonding coat 22 to cohere the surface of being fixed in reflector plate 12, utilize the optically focused and the enhanced shine of the reflecting beads 21 of form of spherical particles, the light reflection of LGP 11 bottom surfaces being exposed with the efficient of the best is led back by LGP 11 and is projected liquid crystal panel 50 effectively;

The pattern form of aforementioned each reflecting beads layer 20 and distribution configuration the utility model are not done specific restriction, be that distance according to distance light supply apparatus 13 changes generally for the distribution configuration of each reflecting beads layer 20, for example can be along with the area of spacing of dwindling adjacent reflecting beads layer 20 with the increase of light supply apparatus 13 distances or increase reflecting beads layer 20, promptly along with the density that is provided with that improves each reflecting beads layer 20 with the increase of light supply apparatus 13 distances, each reflecting beads layer 20 of preferred embodiment as shown in the figure is to form parallel bar row form to arrange, and the spacing of adjacent reflecting beads layer 20 is along with dwindling with the increase of light supply apparatus 13 distances;

This light supply apparatus 13 is located at the side end of LGP 11, and it can be the CCFL of the form embodiments such as (CCFL) linearly of spaced light emitting diode (LED) or more than two, with as providing LCD required light source;

This blooming piece 14 is located at the top of LGP 11, by the equal light action of the scattering of blooming piece 14, can further improve the uniform brilliance that increases module 10 backlight.

As Fig. 1, Fig. 2, shown in Figure 3, after the light source of light supply apparatus 13 enters LGP 11, utilize the conduction and the equal light action of scattering of LGP 11, most light source can be directly transferred to liquid crystal panel 50, the light that part is exposed by LGP 11 bottom surfaces, can utilize the optically focused of each reflecting beads layer 20, add lustre to and reflex, and reflector plate 12 is with the reflecting effect of reflecting layer 124 generations, further equably the light source scattering is led back by LGP 11 and towards liquid crystal panel 50 projections, not only can be expeditiously the light source conduction of light supply apparatus 13 be projected liquid crystal panel 50, and can significantly improve the uniform brilliance of liquid crystal panel 50, shown in the preferred embodiment of Fig. 1, the utility model only needs in liquid crystal panel 50 belows one diffuser plate 51 to be set can produce enough uniform brilliances, provides effectively to reduce cost and reduce the LCD volume, practical usefulness such as weight.

Though the utility model discloses with specific embodiment; but it is not in order to limit the utility model; any those skilled in the art; the displacement of the equivalent assemblies of under the prerequisite that does not break away from design of the present utility model and scope, having done; or, all should still belong to the category that this patent is contained according to equivalent variations and modification that the utility model scope of patent protection is done.

Claims

1. the module backlight of a tool high uniform brilliance is characterized in that this module backlight comprises:

One LGP;

Be located at the light supply apparatus of this LGP side more than one.

2. the module backlight of tool high uniform brilliance as claimed in claim 1 is characterized in that: in the top of described LGP one blooming piece is set.

3. the module backlight of tool high uniform brilliance as claimed in claim 1 or 2 is characterized in that: the density that is provided with of described each reflecting beads layer is along with the increase of the distance of described light supply apparatus and improve.

4. the module backlight of tool high uniform brilliance as claimed in claim 3 is characterized in that: the spacing of adjacent described reflecting beads layer is to increase and dwindle along with the distance with described light supply apparatus.

5. the module backlight of tool high uniform brilliance as claimed in claim 3 is characterized in that: the area of described reflecting beads layer is along with the distance with described light supply apparatus increases and increases.