CN203980009U

CN203980009U - A kind of backlight module and its liquid crystal display

Info

Publication number: CN203980009U
Application number: CN201420355652.2U
Authority: CN
Inventors: 林明枢
Original assignee: DONGGUAN YAXING SEMICONDUCTOR CO LTD
Current assignee: DONGGUAN YAXING SEMICONDUCTOR CO LTD
Priority date: 2014-06-30
Filing date: 2014-06-30
Publication date: 2014-12-03
Anticipated expiration: 2024-06-30

Abstract

The utility model relates to the technical field of display, and more specifically, to a backlight module and a liquid crystal display screen thereof. The backlight module comprises a light guide plate and an LED module arranged on one side of the light guide plate, the LED module comprises a circuit board and an LED lamp fixed on the circuit board, a light groove is arranged on a side of the light guide plate close to the LED lamp, and a reflective sheet is arranged on the bottom surface of the light guide plate. The liquid crystal display screen comprises the above-mentioned backlight module and a glass screen. The utility model improves the light utilization rate by arranging the light groove on the light guide plate, thereby effectively reducing power consumption and extending battery life.

Description

A kind of backlight module and LCDs thereof

Technical field

The utility model relates to computer peripheral technical field, specifically, relates to a kind of backlight module and LCDs thereof.

Background technology

Along with the development of electronic technology, the popularization of electronic equipment is more and more wider, especially smart mobile phone; And smart mobile phone, in evolution, constantly to thin future development, increases LCDs at present simultaneously; Due to the restriction of smart mobile phone volume, it can not carry the battery that volume is larger; Therefore the electric weight of battery is limited; And LCDs is in use, generally adopt side-light backlight module, and adopt when backlight module, LED lamp can only be arranged to the side of LGP, thereby reach thin type; And that at present the display screen of mobile phone does is increasing, in order to keep brightness, a lot of producers adopts the mode that increases LED lamp, in the comparatively intensive setting of a side of LGP; Thereby increased power consumption, power consumption is larger; Thereby cause the power consumption of smart mobile phone very large, need frequent charging; Bring inconvenience very to use.

In prior art, because the size of LCDs is larger, LED lamp 6 is in the time of throw light, and the luminous energy that LGP 4 is received away from a side joint of LED lamp 6 is limited, therefore LED lamp 6 quantity is set more.It is large that the technical program has solved LGP 4 sizes, the problem that light spreads therein; By light groove 7 is set, the light that LED lamp 6 sends can part directly project the side of LGP 4 away from LED lamp 6.Carry out light diffusion by the side of light groove 7 again, cause greatly the not good problem of light diffusion effect thereby effectively solved LGP 4 sizes, and then in the time that LED lamp 6 is set, can reduce its quantity, reduce power consumption; The service life of extending cell phone battery.

Further, the cross-sectional area of described smooth groove 7 is from the one end near LED lamp 6 to reducing gradually away from one end of LED lamp 6.

Cross section is herein the vertical plane perpendicular to the positive projecting direction of LED lamp 6; According to the projection principle of LED lamp 6, LED lamp 6 is in the light intensity maximum of positive projecting direction, and the projection light intensity of side direction reduces gradually along with increasing projection light intensity with the angle of positive projecting direction.Therefore in order to ensure the light quantity at LGP 4 middle parts, the cross section of light groove 7 is reduced gradually, increase the light-receiving area of light groove 7 sides, ensure the light quantity at LGP 4 middle parts.In the time of design light groove 7, light groove 7 can be designed to taper.

Further, the side of described smooth groove 7 is the curved surface setting of indent.

The side of light groove 7 is set to the curved surface of indent, makes this curved surface in the time receiving light, is divergence of beam face.The light that LED lamp 6 sends projects after the curved surface of light groove 7, enters in LGP 4 in the mode of dispersing.Light is distributed more uniformly in LGP 4, thereby be conducive to reduce LED lamp 6 pearls.

Further, described circuit board 5 surfaces are provided with reflective membrane.

Be provided with reflective membrane on circuit board 5 surfaces, maximized the projecting on LGP 4 of light that LED lamp 6 pearls are sent, improves light utilization rate; Be conducive to reduce LED lamp 6 pearls and power consumption.

Further, the exiting surface of described LGP 4 is provided with diffusion sheet 2 and prismatic lens 3.

Be provided with diffusion sheet 2 and prismatic lens 3 on the surface of LGP 4, make from LGP 4 light out more evenly, prevent because of local insufficient light, increase the situation of LED lamp 6 pearls, be conducive to minimizing power consumption further.

Summary of the invention

The purpose of this utility model is to solve the deficiencies in the prior art, and a kind of backlight module is provided; This backlight module can effectively utilize luminous energy, saves electric energy; Extend the service time of intelligent mobile phone battery.

Another object of the present utility model is to provide a kind of LCDs with energy-saving backlight module, service time that can extending cell phone battery.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of backlight module, comprise LGP and the LED module that is arranged at LGP one side, described LED module comprises circuit board and be fixed on the LED lamp on circuit board, and described LGP is provided with light groove near a side of LED lamp, and the bottom surface of described LGP is provided with reflecting piece.

Further, the cross-sectional area of described smooth groove is from the one end near LED lamp to reducing gradually away from one end of LED lamp.

Further, the side of described smooth groove is the curved surface setting of indent.

Further, described circuit board surface is provided with reflective membrane.

Further, the exiting surface of described LGP is provided with diffusion sheet and prismatic lens.

A kind of LCDs, comprise backlight module and glass screen, described backlight module comprises LGP and is arranged at the LED module of LGP one side, described LED module comprises circuit board and is fixed on the LED lamp on circuit board, described LGP is provided with light groove near a side of LED lamp, and the bottom surface of described LGP is provided with reflecting piece.

The beneficial effect that the utility model is obtained is: the utility model, by light groove is set on LGP, improves light utilization, thereby can effectively reduce power consumption, extends service time of battery.

Brief description of the drawings

Fig. 1 is the decomposition texture schematic diagram of the utility model backlight module.

Fig. 2 is a kind of structural representation of LGP of the present utility model.

Fig. 3 is the another kind of structural representation of LGP of the present utility model.

Fig. 4 is the schematic diagram at another visual angle of Fig. 3.

Fig. 5 is the right view of Fig. 3.

Reference numeral is:

1---reflecting piece 2---diffusion sheet

3---prismatic lens 4---LGP

5---circuit board 6---LED lamp

7---light groove.

Detailed description of the invention

Below in conjunction with Fig. 1 to Fig. 5, and detailed description of the invention is described further the utility model.

Implement: 1: referring to Fig. 1 to Fig. 5.

A kind of backlight module, comprise LGP 4 and the LED module that is arranged at LGP 4 one sides, described LED module comprises circuit board 5 and is fixed on the LED lamp 6 on circuit board 5, and described LGP 4 is provided with light groove 7 near a side of LED lamp 6, and the bottom surface of described LGP 4 is provided with reflecting piece 1.

Embodiment 2: a kind of LCDs, comprise backlight module and glass screen, described backlight module comprises LGP 4 and is arranged at the LED module of LGP 4 one sides, described LED module comprises circuit board 5 and is fixed on the LED lamp 6 on circuit board 5, described LGP 4 is provided with light groove 7 near a side of LED lamp 6, and the bottom surface of described LGP 4 is provided with reflecting piece 1.

The light quantity that this LCDs can effectively use LED lamp 6 to send, reduces LED lamp 6 pearl quantity, reduces power consumption.

In embodiment 1, other back light module unit structure all can be applicable in the LCDs of embodiment 2.

The utility model has been done to explain, and those of ordinary skill in the art should be appreciated that and can modify or be equal to replacement the technical solution of the utility model, and do not depart from essence and the scope of technical solutions of the utility model.

Claims

1. A backlight module, comprising a light guide plate and an LED module arranged on one side of the light guide plate, said LED module comprising a circuit board and an LED lamp fixed on the circuit board, characterized in that: said light guide plate is close to A light groove is arranged on one side of the LED lamp, and a reflective sheet is arranged on the bottom surface of the light guide plate.

2 . The backlight module according to claim 1 , wherein the cross-sectional area of the light groove gradually decreases from an end close to the LED light to an end far away from the LED light.

3 . The backlight module according to claim 2 , wherein the side surface of the light groove is set as a concave curved surface. 4 .

4. The backlight module according to claim 1, 2 or 3, wherein a reflective film is provided on the surface of the circuit board.

5 . The backlight module according to claim 4 , wherein the light emitting surface of the light guide plate is provided with a diffusion sheet and a prism sheet.

6. A liquid crystal display, comprising a backlight module and a glass screen, said backlight module comprising a light guide plate and an LED module arranged on one side of the light guide plate, said LED module comprising a circuit board and being fixed on the circuit board A light groove is provided on one side of the light guide plate close to the LED lamp, and a reflective sheet is provided on the bottom surface of the light guide plate.

7 . The liquid crystal display according to claim 6 , wherein the cross-sectional area of the light groove gradually decreases from an end close to the LED light to an end far away from the LED light.

8 . The liquid crystal display according to claim 7 , wherein the side surfaces of the light grooves are arranged as concave curved surfaces. 9 .

9. A liquid crystal display according to claim 8, 6 or 7, wherein a reflective film is provided on the surface of the circuit board.

10. The liquid crystal display according to claim 9, wherein a diffusion sheet and a prism sheet are provided on the light emitting surface of the light guide plate.