CN207074280U

CN207074280U - One kind is used to shield comprehensively and the uniform backlight of luminosity

Info

Publication number: CN207074280U
Application number: CN201720998453.7U
Authority: CN
Inventors: 彭益; 张小齐; 查显超
Original assignee: Shenzhen Longli Technology Co Ltd
Current assignee: Shenzhen Longli Technology Co Ltd
Priority date: 2017-08-10
Filing date: 2017-08-10
Publication date: 2018-03-06
Anticipated expiration: 2027-08-10

Abstract

The utility model discloses a kind of for screen and the uniform backlight of luminosity comprehensively, some LED of light source are provided including a light guide plate and for the light guide plate, in the exiting surface of light guide plate, V cut grooves are set, in the light inlet of light guide plate, sawtooth is set, the dark space of light guide plate light inlet is eliminated or reduced by adjusting depth and the spacing of width and sawtooth of V cut grooves, makes light guide plate luminous uniform.The utility model can dramatically increase the brightness of light guide plate light inlet two corners；The area of light guide plate light inlet two corners dark space can be reduced；On the premise of screen accounting and illumination effect is not reduced, the chamfering of light guide plate light inlet can be suitably increased, makes the gripping sense of mobile phone more preferable.

Description

One kind is used to shield comprehensively and the uniform backlight of luminosity

Technical field

Backlight source domain is the utility model is related to, more particularly to it is a kind of for screen and the uniform backlight of luminosity comprehensively Source.

Background technology

In order to increase the brightness of backlight, the efficiency of light energy utilization of light guide plate is lifted, and increases the yield of light guide plate and hides the flaw Property, the light guide plate of present middle and high end mobile phone uses the light-emitting window setting V-cut grooves of V-cut techniques, i.e. light guide plate, V-cut Groove is a kind of micro-structural, and it is in small zigzag or semicircle.With the screen accounting more and more higher of Mobile phone screen, and in order to increase The portability that mobile phone is carried and used, mobile phone are developed from the direction that original upright profile gradually sets chamfering to corner.Such as Fig. 1 It is the design of existing backlight shown in Fig. 2, has depth to be necessarily uniformly distributed with spacing in the light inlet of light guide plate 100 Sawtooth 200, exiting surface has depth necessarily and the equally distributed V-cut grooves 300 of spacing, 100 4 jiaos of light guide plate be provided with it is big Angle, such a design cause to place LED400 without space at fillet, easily cause two corners and go out because corner has big chamfering Existing dark space 500, especially because the condenser effect of V-cut grooves 300, can make two corners not have light irradiation, causes two corners darker.

Therefore, the prior art is defective, it is necessary to improve.

Utility model content

The purpose of this utility model is overcome the deficiencies in the prior art, there is provided one kind is used to shield comprehensively and luminosity is uniform Backlight, designed by a kind of brand-new V-cut grooves design and sawtooth, to solve the problems, such as that dark space occur in light guide plate two corners.

The technical solution of the utility model is as follows：One kind is used to shield comprehensively and the uniform backlight of luminosity, including one Light guide plate and some LED that light source is provided for the light guide plate, the exiting surface of the light guide plate are provided with V-cut grooves, the V- Cut grooves include：Firstth area, the secondth area and the 3rd area, firstth area are located at the centre of light guide plate, in first area's V-cut grooves Depth it is constant, secondth area and the 3rd area are located at the both sides in the firstth area, the depth of the secondth area and the 3rd area's V-cut grooves to Light guide plate both sides from depth to shallow, until the depth of V-cut grooves of light guide plate both sides is zero.

Further, it is constant in the firstth area, the secondth area and the 3rd area, the width of V-cut grooves.

Further, in the firstth area, the width of V-cut grooves is constant, in the secondth area and the 3rd area, the width of V-cut grooves Become larger among light guide plate to both sides.

Further, the light guide plate light inlet is provided with sawtooth, and the spacing between the sawtooth is constant.

Further, the spacing of sawtooth corresponding to the LED positioned at centre is more than between sawtooth corresponding to the LED positioned at both sides Away from.

Further, sawtooth spacing is gradually reduced from centre to both sides corresponding to the LED positioned at both sides.

Further, the V-cut grooves are pointed or circular.

Further, the sawtooth is pointed, oval or trapezoidal.

Using such scheme, the utility model provides one kind and is used for screen and the uniform backlight of luminosity comprehensively, is leading The exiting surface of tabula rasa sets V-cut grooves, sawtooth is set in the light inlet of light guide plate, by the depth and width that adjust V-cut grooves And the spacing of sawtooth eliminates or reduced the dark space of light guide plate light inlet, make light guide plate luminous uniform.The utility model has Following beneficial effect：

1st, the brightness of light guide plate light inlet two corners can be dramatically increased；

2nd, the area of light guide plate light inlet two corners dark space can be reduced；

3rd, on the premise of screen accounting and illumination effect is not reduced, the chamfering of light guide plate light inlet can be suitably increased, is made The gripping sense of mobile phone is more preferable.

Brief description of the drawings

Fig. 1 is the structural representation in traditional backlight source.

Fig. 2 is the illumination effect figure in traditional backlight source.

Fig. 3 is the schematic perspective view of the embodiment of the utility model one.

Fig. 4 is floor map of the present utility model.

Fig. 5 is illumination effect figure of the present utility model.

Fig. 6 is the schematic perspective view of another embodiment of the utility model.

Fig. 7 is the structural representation of other V-cut grooves of the utility model.

Fig. 8 is the structural representation of other sawtooth of the utility model.

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.

Fig. 3 and Fig. 4 is please referred to, the utility model provides a kind of for screen and the uniform backlight of luminosity comprehensively Source, including a light guide plate 1 and some LED2 that light source is provided for the light guide plate 1, the exiting surface of the light guide plate 1 are provided with V- Cut grooves 11, the V-cut grooves 11 include：Firstth area, the secondth area and the 3rd area, firstth area are located in light guide plate 1 Between, constant in the depth of first area's V-cut grooves 11, secondth area is located at the both sides of light guide plate 1 with the 3rd area.In the present embodiment In, the width in secondth area and the 3rd area is about 15mm, in the depth of the secondth area and the 3rd area's V-cut grooves 11 to light guide plate 1 Both sides from depth to shallow, until the depth of V-cut grooves 11 of the both sides of light guide plate 1 is zero.In the present embodiment, in the firstth area, V-cut grooves 11 width is constant, and in the secondth area and the 3rd area, the width of V-cut grooves 11 gradually broadens among light guide plate 1 to both sides, the The width a of the V-cut grooves 11 in one area, the secondth area and the 3rd area is consistent.Sawtooth 12, this reality are provided with the light inlet of light guide plate 1 Apply in example, the spacing of sawtooth 12 corresponding to the LED2 positioned at centre is entered more than the spacing of sawtooth 12 corresponding to the LED2 positioned at both sides One step, the spacing of sawtooth 12 is gradually reduced from centre to both sides corresponding to the LED2 positioned at both sides.Referring to Fig. 5, so set The benefit of V-cut grooves 11 and sawtooth 12 is can to increase the light splitting angle Q of LED2 at the exiting surface two corners of light guide plate 1 (at least 10 ° of increase), so as to reduce the width d of two corners dark space, increase the brightness of two corners.

Referring to Fig. 6, as alternative another embodiment, relative to above-described embodiment, the difference of the present embodiment It is in in order to adapt to the light guide plate 1 of different model, in the firstth area, the width a of V-cut grooves 11 is constant, in the secondth area and 3rd area, the width a of V-cut grooves 11 becomes larger among light guide plate to both sides, so that the illumination effect of light guide plate 1 is more It is good.

Referring to Fig. 7, in the embodiment above, the V-cut grooves 11 can be pointed or circular, when V-cut grooves 11 For circle when, round size can be consistent, also can be inconsistent.Referring to Fig. 8, the sawtooth 12 can be pointed, oval or terraced Shape.

In summary, the utility model provides a kind of for screen and the uniform backlight of luminosity comprehensively, in light guide plate Exiting surface V-cut grooves are set, in the light inlet of light guide plate, sawtooth is set, by adjust the depth of V-cut grooves and width and The spacing of sawtooth eliminates or reduced the dark space of light guide plate light inlet, makes light guide plate luminous uniform.The utility model has as follows Beneficial effect：

Preferred embodiment of the present utility model is these are only, is not limited to the utility model, it is all in this practicality All any modification, equivalent and improvement made within new spirit and principle etc., should be included in guarantor of the present utility model Within the scope of shield.

Claims

1. one kind is used to shield comprehensively and the uniform backlight of luminosity, including a light guide plate and provides light for the light guide plate Some LED in source, it is characterised in that the exiting surface of the light guide plate is provided with V-cut grooves, and the V-cut grooves include：Firstth area, Secondth area and the 3rd area, firstth area are located at the centre of light guide plate, constant in the depth of first area's V-cut grooves, and described 2nd area and the 3rd area are located at the both sides in the firstth area, the secondth area and the 3rd area's V-cut grooves depth to light guide plate both sides by becoming deeply Shallow, until the depth of the V-cut grooves of light guide plate both sides is zero, the light guide plate light inlet is provided with sawtooth.

2. according to claim 1 be used for screen and the uniform backlight of luminosity comprehensively, it is characterised in that first Area, the secondth area and the 3rd area, the width of V-cut grooves are constant.

3. according to claim 1 be used for screen and the uniform backlight of luminosity comprehensively, it is characterised in that first Area, the width of V-cut grooves is constant, and in the secondth area and the 3rd area, the width of V-cut grooves gradually becomes among light guide plate to both sides Greatly.

4. according to claim 1 be used for screen and the uniform backlight of luminosity comprehensively, it is characterised in that the sawtooth Between spacing it is constant.

5. according to claim 1 be used for screen and the uniform backlight of luminosity comprehensively, it is characterised in that positioned at centre LED corresponding to sawtooth spacing be more than positioned at both sides LED corresponding to sawtooth spacing.

6. according to claim 5 be used for screen and the uniform backlight of luminosity comprehensively, it is characterised in that positioned at both sides LED corresponding to sawtooth spacing be gradually reduced from centre to both sides.

7. according to claim 1 be used for screen and the uniform backlight of luminosity comprehensively, it is characterised in that the V- Cut grooves are pointed or circular.

8. according to claim 1 be used for screen and the uniform backlight of luminosity comprehensively, it is characterised in that the sawtooth To be pointed, oval or trapezoidal.