CN202452286U

CN202452286U - LCD (liquid crystal display) backlight source structure

Info

Publication number: CN202452286U
Application number: CN2011205547702U
Authority: CN
Inventors: 崔燕平
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-27
Filing date: 2011-12-27
Publication date: 2012-09-26
Anticipated expiration: 2021-12-27

Abstract

The utility model discloses an LCD (liquid crystal display) backlight source structure, comprising a mask, a light source and a base, wherein the mask covers on the light source; and the light source is coupled to the base. The mask further comprises a concave lens and a convex lens. The light source can be at least an EL device or LED (light emitting diode) light source. The base is provided with a groove structure matched with the light source; and the groove is provided with a conducting module which can be mutually connected or adhered with the light source. According to the LCD backlight source structure, by the adoption of an LCD backlight source generation method of using a lens curvature design and coordinating the LED light source to use as the source of the LCD backlight source, the irradiation range of the LED light source is increased under a certain uniformity condition, even the irradiation uniformity is increased in the range, and the number of LEDs in the backlight module can be reduced simultaneously, therefore the manufacture cost of the backlight module is lowered.

Description

A kind of LCD back light source structure

Technical field

The utility model relates to a kind of LCD back light source structure.

Background technology

LCD is owing to have in light weight; The characteristic that volume is little; Therefore by the display unit of mini-plants such as past notebook computer, progressively use and the existing trend that replaces traditional C RT screen or TV, it is also along with the performance of zero device improves; Make specifications such as LCD panel size, brightness, contrast, also improve all the time promote in the middle of.LCD can be divided into two types of reflection-type and penetrating types according to the mode of light source generation image, and early stage LCD is many to be main with reflection-type, is that market is large with penetrating type LCD mainly then at present.Penetrating type LCD then can divide according to the position of light source setting and makes side-light type (side-edge) and straight-down negative (direct type) backlight mode; The light source of side-light type LCD is arranged at LGP (light guide) two left and right sides sides or four side place; Make light via the total reflection effect of LGP and the set diffusion point of diffusion sheet of LGP below; Light is penetrated from the LGP surface equably, and then see through liquid crystal panel again, demonstrate image.

Summary of the invention

The technical problem that the utility model will solve is in order to overcome technological deficiency recited above, a kind of LCD back light source structure to be provided.

In order to solve technical problem recited above, the utility model is taked following technical scheme: the utility model provides a kind of LCD back light source structure, comprises by face shield, light source and pedestal and forming, and said face shield cover is placed on the light source, and said light source lotus root is connected on the pedestal.

Said face shield further comprises by a recessed border and a protruding border and forming.

Said light source can be at least one EL equipment or led light source.

Said pedestal be provided with one with the suitable groove structure of light source, this groove has and can interconnect with light source or the adhesion conductive module.

The beneficial effect of the utility model is: utilize the design of lenticular body curvature; And cooperated with LED light source; With LCD back light source producing method, the range of exposures of led light source under certain uniformity condition increased, even in this scope, promote its irradiation uniformity as LCD backlight source; And can reduce the number that LED is provided with in the backlight module simultaneously, to reduce the cost of manufacture of backlight module.

Description of drawings

Fig. 1 is the exploded perspective sketch map of the utility model LCD back light source structure;

30-light source, 40-face shield, the protruding border of 41-, the recessed border of 42-, 50-pedestal, 51-groove, 60-central shaft among the figure.

The specific embodiment

Below in conjunction with accompanying drawing a kind of LCD back light source structure that the utility model provided is carried out step explanation:

As shown in Figure 1, a kind of LCD back light source structure comprises by face shield 40, light source 30 and pedestal 50 and forming, and said face shield 40 covers are placed on the light source 30, and said light source 30 lotus roots are connected on the pedestal 50.

Said face shield 40 further comprises by a recessed border 42 and a protruding border 41 and forming.

Said light source 30 can be at least one EL equipment or led light source.

Said pedestal 50 be provided with one with suitable groove 51 structures of light source 30, this groove 51 has and can interconnect or the adhesion conductive module with light source 30.

The utility model LCD back light source producing method is, a lenticular body 40 at first is provided, and provides-led light source 30 again; Then lenticular body 40 covers are placed on the said led light source 30; But 30 of this led light sources further lotus root are connected on the pedestal 50, in order to electrically connect, and power supply are provided.Lenticular body 40 as shown in the figure is the circular-arc mirror bodies of a spheroid, and it has recessed border 42 of an incidence surface and the protruding border 41 of an exiting surface.The recessed border 42 of incidence surface is circular arc concave surfaces, and itself and aforesaid led light source 30 join, and the protruding border 41 of exiting surface then is an arc convex surface, and this arc convex surface then connects most this end of welcoming LED-backlit source blooming piece in backlight module.The arc concave surface in the recessed border 42 of incidence surface is a central point with central shaft 60, its curvature by central shaft 60 laterally, by diminishing greatly gradually.Through refraction for the first time, those light by after the refraction for the second time of exiting surface protruding border 41 processes, penetrate this lenticular body again when getting into lenticular body by the recessed border 42 of incidence surface.Curvature near central shaft 60 is big more more owing to the recessed border 42 of incidence surface; Therefore the light refraction angle by this place's incident is also big more; It is scattered toward both sides branches easilier, and away from the exterior lateral area of central shaft 60, then because curvature is little; The refraction angle that produces is little, and therefore the light at two side directions does not have bigger deviation.When these light touched the protruding border 41 of exiting surface, then because littler the closer to the curvature of central shaft 60, its refraction angle was also more little; The light angle deviation of outgoing originally is little, but away from the exterior lateral area of central shaft 60, then becomes big because of curvature; Refraction angle also increases; Further make these emergent lights toward central shaft 60 both sides skews, make the emergent ray of led light source 30, significantly increase the zone of its irradiation.

should be understood that, concerning those of ordinary skills, can improve or conversion according to above-mentioned explanation, and all these improvement and conversion all should belong to the protection domain of the utility model accompanying claims.

Claims

1. a LCD back light source structure is characterized in that, comprises by face shield, light source and pedestal and forming, and said face shield cover is placed on the light source, and said light source lotus root is connected on the pedestal.

2. LCD back light source structure according to claim 1 is characterized in that, said face shield further comprises by a recessed border and a protruding border and forming.

3. LCD back light source structure according to claim 1 is characterized in that, said light source can be at least one EL equipment or led light source.

4. LCD back light source structure according to claim 1 is characterized in that, said pedestal be provided with one with the suitable groove structure of light source, this groove has and can interconnect with light source or the adhesion conductive module.