CN201420997Y

CN201420997Y - Novel backlight

Info

Publication number: CN201420997Y
Application number: CN2009200544429U
Authority: CN
Inventors: 严幸生
Original assignee: DONGGUAN NEW ORIENTAL PHOTOELECTRIC TECHNOLOGY Co Ltd
Current assignee: DONGGUAN NEW ORIENTAL PHOTOELECTRIC TECHNOLOGY Co Ltd
Priority date: 2009-04-13
Filing date: 2009-04-13
Publication date: 2010-03-10
Anticipated expiration: 2019-04-13

Abstract

The utility model belongs to the technical field of optoelectronic display, and in particular relates to a novel backlight; the novel backlight comprises a lower protective outer frame, a reflecting sheet, a light guide panel, a lower diffusion sheet and a lower brightness enhancement film which are sequentially combined from back surface to front surface, the side surface of the light guide panelis provided with an LED luminous source component which is arranged at the edge position of the light guide panel in a way of top emission package. In the utility model, the LED with top emission package is adopted as the backlight source, and the LED is used as the backlight source to solve the problems that when a cold cathode fluorescence lamp (CCFL) is used as the light source, the color saturation of the backlight, environment protection, service life and brightness are poor, while the color saturation of LED is more than 100 percent NTSC, the service life of LED can reach 100,000 hoursand the brightness thereof can reach more than 5000cd/m<2>.

Description

A kind of novel backlight source

Technical field

The utility model belongs to the photoelectric display technical field, particularly a kind of novel backlight source.

Background technology

LCD is non-luminiferous display unit, need just can reach the function of demonstration with backlight.The quality of backlight performance is except meeting directly influences LCD video picture quality, and the cost of backlight accounts for the 3-5% of LCD module, and the electric power that is consumed more accounts for 75% of module, considerable spare part in the LCD module of can saying so.High meticulous, large-sized LCD, must there be high performance backlight technology to cooperate with it, therefore when the LCD industry makes great efforts to open up new application, the high performance of backlight technology (as high brightnessization, cost degradation, low consumption electrification, lightening etc.) is also being played the part of person who has rendered outstanding service's behind the scenes role.

The light source of LCD panel mainly is made up of with sheet, glue frame etc. light source, LGP, optics.Backlight has the brightness height, long, luminous characteristics such as evenly of life-span.(the Cold Cathode Fluorescent Lamps of CCFL on the traditional LC D display device, cold-cathode fluorescence lamp) some inadequate natural endowment of backlight technology and product, for example CCFL exists that color is saturated and lacks perfection (color saturation is about 70%NTSC), not environmental protection (mercurous etc. harmful substance), life-span to fall short of (general 20,000 hours), low (general brightness has only 3000cd/m for product thickness thick (general entire product will be accomplished the thickness that 4mm is above), brightness ²About), so people are seeking its substitute technology and product always, and in this process, the LED-backlit technical products just has been included into people's the category of selecting for use.

The utility model content

The utility model has overcome shortcoming of the prior art, and a kind of thinner thickness is provided, and color saturation is good, and brightness height, luminous stable, reaches the novel backlight source of environmental requirement and long service life.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

A kind of novel backlight source; comprise from the back side to following protection housing, reflector plate, LGP, following diffusion sheet, the following brightening piece of positive combination successively; described LGP side is provided with LED light emitting source assembly, and described LED light emitting source assembly is the edge that is installed on LGP in the mode of pushing up luminous encapsulation.

Further, also be equiped with the glue frame under the described LED light emitting source assembly, described LED light emitting source assembly is the bottom margin position that is installed on the glue frame in the mode of pushing up luminous encapsulation.

The described top of brightening piece down also is provided with brightening piece.

Described top of going up brightening piece also is provided with diffusion sheet.

Described LGP is injection molded by injection machine, and sensitive surface is a flour milling, and the back side is etched surface.

Described LGP is the V-arrangement broached-tooth design.

The LED lamp string of described LED light emitting source assembly adopts three strings nine circuit connecting mode also.

Described top of going up diffusion sheet also is provided with the protection housing.

Compared with prior art, the beneficial effects of the utility model are:

(1) the utility model has been owing to adopted the luminous encapsulated LED in top as backlight, LED as back light solved cold-cathode fluorescence lamp (CCFL) as the color saturation (the LED color saturation is greater than 100%NTSC) of the backlight of light source, environmental protection, life-span (the LED life-span can reach 100,000 hours and brightness (product brightness can reach 5000cd/m ²More than) problem, simultaneously because LED is short and small frivolous, make the thinner thickness of whole backlight to be applied to 10.2 cun LCD, can satisfy it to ultra-thin, undersized demand.

(2) LGP of the present utility model adopts the injection machine injection mo(u)lding, makes that homogeneity of product can be good, has reduced bad yield rate effectively, effectively enhances productivity, and solves effectively that printing-type LGP uniformity is poor, fraction defective height, inefficient problem.

(3) LGP light entrance structures thereof of the present utility model adopts the V-arrangement light entrance structures thereof, effectively improves the product illumination effect and the uniformity.

(4) the utility model adopts three strings nine circuit connecting mode also, effectively realizes the characteristic of product high brightness, low-power, environmental protection, high color saturation, long service life.

(5) the utility model adopts upper and lower metal system protection housing, and used thickness is the tinplate of 0.45mm, effectively raises the steadiness of product.

Description of drawings

Fig. 1 is the utility model super-thin backlight perspective exploded view;

Fig. 2 is a light conducting plate structure schematic diagram in the utility model, is flour milling by the front, and the back side is etched surface;

Fig. 3 is the A place enlarged diagram among above-mentioned Fig. 2;

Fig. 4 is the LED lamp string structure schematic diagram of the utility model LED light emitting source assembly;

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:

The specific embodiment

As shown in Figure 1; novel backlight described in the utility model source; comprise from the back side to the positive following protection housing 1 of combination successively; reflector plate 2; glue frame 3; LGP 4; following diffusion sheet 5; following brightening piece 6; last brightening piece 7; last diffusion sheet 8; last protection housing 9; LGP 4 sides are provided with LED light emitting source assembly; described LED light emitting source assembly is to be installed on the edge of LGP 4 and the bottom margin position of glue frame 3 in the mode of pushing up luminous encapsulation; described LED light emitting source assembly is by LED lamp string 10; connecting conductor terminal 11 forms; as Fig. 2; shown in Figure 3; LGP 4 is injection molded by injection machine; sensitive surface is a flour milling; the back side is etched surface; its light entrance structures thereof adopts the V-arrangement light entrance structures thereof, effectively improves the product illumination effect and the uniformity.As shown in Figure 4; the LED lamp string 10 of described LED light emitting source assembly adopts three strings nine circuit connecting mode also and is connected conductor terminal 11 connections; described upper and lower protection housing is iron, and used thickness is the tinplate of 0.45mm, effectively raises the steadiness of product.

The utility model adopts the luminous encapsulated LED in top as backlight, LED is because of adopting the luminous power consumption that causes of single-point low, add advantages such as long and short little frivolous, environmental protection of life-span, be applied to 10.2 cun LCD, can satisfy it to ultra-thin, undersized demand, can replace CCFL gradually and be applied to small size panel backlight.

Claims

1, a kind of novel backlight source; comprise from the back side to following protection housing, reflector plate, LGP, following diffusion sheet, the following brightening piece of positive combination successively; described LGP side is provided with LED light emitting source assembly, it is characterized in that: described LED light emitting source assembly is the edge that is installed on LGP in the mode of pushing up luminous encapsulation.

2, novel backlight according to claim 1 source, it is characterized in that: also be equiped with the glue frame under the described LED light emitting source assembly, described LED light emitting source assembly is the bottom margin position that is installed on the glue frame in the mode of pushing up luminous encapsulation.

3, novel backlight according to claim 2 source is characterized in that: the described top of brightening piece down also is provided with brightening piece.

4, novel backlight according to claim 3 source is characterized in that: described top of going up brightening piece also is provided with diffusion sheet.

5, novel backlight according to claim 1 source, it is characterized in that: described LGP is injection molded by injection machine, and sensitive surface is a flour milling, and the back side is etched surface.

6, according to each described novel backlight source of claim 1 to 5, it is characterized in that: described LGP is the V-arrangement broached-tooth design.

7, according to claim 6 a described novel backlight source, it is characterized in that: the LED lamp string of described LED light emitting source assembly adopts three strings nine circuit connecting mode also.

8, according to claim 7 a described novel backlight source, it is characterized in that: described top of going up diffusion sheet also is provided with the protection housing.