CN202258159U

CN202258159U - LED (Light-Emitting Diode) backlight display screen of novel manual light guide plate

Info

Publication number: CN202258159U
Application number: CN2011201933686U
Authority: CN
Inventors: 邓怀兵
Original assignee: SHENZHEN WEITIAN PHOTOELECTRIC TECHNOLOGY Co Ltd
Current assignee: SHENZHEN WEITIAN PHOTOELECTRIC TECHNOLOGY Co Ltd
Priority date: 2011-06-09
Filing date: 2011-06-09
Publication date: 2012-05-30
Anticipated expiration: 2021-06-09

Abstract

The utility model discloses an LED (Light-Emitting Diode) backlight display screen of a novel manual light guide plate. The LED backlight display screen of the novel manual light guide plate comprises a light source LED lamp, a reflective sheet and a diffusion sheet, wherein the reflective sheet and the diffusion sheet are of the same shape and are rectangular; double faced adhesive tapes are pasted at the two sides of the light guide plate for being fixed and bonded with the reflective sheet and the diffusion sheet; a shading film is pasted at the head part of the light guide plate; and a PCB (Printed Circuit Board) for fixing the light source is bonded at the side surface of the head part of the light guide plate. The LED backlight display screen is characterized in that a saw-toothed structure is additionally arranged at a lamp hole of the manual light guide plate of a product. By adopting the LED backlight display screen of the novel manual light guide plate, the improved effect is extremely remarkable; and through measurement and calculation, the lighting effect of the manual light guide plate employing the saw-toothed structure is better than the lighting effect of an original light guide plate provided with a semi-circular lamp hole only directly milled by a spherical knife.

Description

A kind of novel manual LGP LED backlit display

Technical field

The utility model relates to a kind of backlit display screen, the manual LGP backlit display screen of particularly a kind of LED.

Background technology

In the manual LGP production run of existing LED backlit display; The position of placing the LED light emitting source generally just directly mills out a semicircle with the ball cutter; The lamp hole structure of this placement LED light emitting source is often because the restriction of LED light emitting source lighting angle; In the vision area of product, can not get reasonable illumination effect, the place on the local bright socket both sides of socket is then relatively darker, and luminance nonuniformity seems.

The utility model content

To above-mentioned defective, the utility model provides a kind of novel manual LGP LED backlit display, has improved the phenomenon of luminance nonuniformity effectively.

For realizing above-mentioned technical purpose; A kind of novel manual LGP LED backlit display of the utility model adopts following technical scheme: a kind of novel manual LGP LED backlit display; Include light emitting source LED lamp, shape identical and the reflector plate, the diffusion sheet that are rectangle; The LGP both sides be pasted with that double faced adhesive tape is used for and reflector plate, diffusion sheet between be adhesively fixed; Head at LGP is pasted with photomask, and the head side of LGP is pasted with the fixedly PCB of light emitting source, and its difference is, has increased the structure of sawtooth at the manual LGP lamp hole place of product.

For further realizing above-mentioned technical purpose, said sawtooth is the structure of on the semicircular basis that originally milled out, changing.

Further, the broached-tooth design of changing on the said semicircular basis mainly is to be the outside with former semicircular limit; Increase sawtooth inwards, but the degree of depth of sawtooth, and angle need be according to the lighting angle of LED light emitting source; The thickness of manual LGP, the size of shading region is come fixed.

When manual light guide plate is: 6.0mm; The size of shading region is: 17mm; The lighting angle of LED light emitting source is: in the time of 100 °, the angle of sawtooth is: between 42 °-64 °; Highly get: 0.8 ± 0.2mm (Fig. 3 A, Fig. 3 B, Fig. 3 C)

The manual LGP LED backlit display of the utility model is owing to increased broached-tooth design at the lamp hole place; The light that makes light emitting source send gets in the product vision area through the refraction of sawtooth side; The direction of propagation of light is changed; Reduced the direct entering of light at the socket place, increased the entering of light, thereby made the uneven phenomenon of product illumination effect be improved in the both sides of socket.

The improvement effect highly significant of the utility model, through measuring and calculating, all just directly to mill out the LGP of a semicircle lamp hole with the ball cutter good than original for the manual LGP illumination effect that has used broached-tooth design.

Description of drawings

Fig. 1 is the structural representation of the manual LGP LED backlit display of the utility model.

Fig. 2 is the enlarged drawing that increases sawtooth.

Fig. 3 A, Fig. 3 B, Fig. 3 C are the lighting angle synoptic diagram.

Embodiment

For the ease of understanding and realization the utility model of persons skilled in the art, the embodiment to the utility model is further described below in conjunction with accompanying drawing.

In conjunction with Fig. 1, Fig. 2, Fig. 3 A, Fig. 3 B, Fig. 3 C:

Be depicted as a preferred embodiment of the manual LGP LED backlit display of the utility model, include light emitting source LED lamp 4, shape identical and the reflector plate 7, the diffusion sheet 1 that are rectangle; LGP 3 both sides be pasted with that double faced adhesive tape 6,8,9 is used for and reflector plate 7, diffusion sheet 1 between be adhesively fixed; Head at LGP is pasted with photomask 2, and the head side of LGP is pasted with the fixedly PCB5 of light emitting source 4.

The broached-tooth design of changing on the semicircular basis mainly is to be the outside with former semicircular limit, increases sawtooth inwards, but the degree of depth of sawtooth, angle need be according to the lighting angle of LED light emitting source, the thickness of manual LGP, and the size of shading region is come fixed.

When manual light guide plate is: 6.0mm; The size of shading region is: 17mm; The lighting angle of LED light emitting source is: in the time of 100 °:

The angle of sawtooth is: between 42 °-64 °; Highly get: 0.8 ± 0.2mm (referring to Fig. 3 A, Fig. 3 B, Fig. 3 C)

Claims

1. novel manual LGP LED backlit display includes light emitting source LED lamp, shape is identical and the reflector plate, the diffusion sheet that are rectangle; It is characterized in that the LGP both sides are pasted with double faced adhesive tape, be used for and reflector plate, diffusion sheet between be adhesively fixed.

2. according to the said a kind of novel manual LGP LED backlit display of claim 1, it is characterized in that being pasted with photomask at the head of LGP, the head side of LGP is pasted with the fixedly PCB of light emitting source, has increased the structure of sawtooth at LGP lamp hole place.

3. according to the said a kind of novel manual LGP LED backlit display of claim 2, it is characterized in that broached-tooth design is the outside with semicircular limit, increases sawtooth inwards.