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Direct-type backlight module and liquid crystal displayer

A backlight module and direct-type technology, applied in the direction of instruments, optics, nonlinear optics, etc., can solve the problems of increased design cost, long mold cycle, increased product design cycle and design cost, and achieve the effect of reducing manufacturing cost

Inactive Publication Date: 2018-05-25
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the same backlight module needs to be compatible with LED lights of different designs, and the mixing distance of LED lights of different plans is different. Optical distance requirements, however, the cycle of re-development of the mold is long, the design cost increases, and the product design cycle and design cost are increased

Method used

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  • Direct-type backlight module and liquid crystal displayer
  • Direct-type backlight module and liquid crystal displayer
  • Direct-type backlight module and liquid crystal displayer

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0019] see Figure 1-5 , is a direct type backlight module 100 provided by the present invention, which includes: a backplane 10 , a light source 20 , a secondary optical lens 30 and an optical film 40 .

[0020] The backplane 10 includes a substrate 101 and at least two backplane frames 102 . The substrate 101 and the backplane frame 102 are formed separately. The substrate 101 and the backplane frame 102 are made of metal or plastic. Each of the backplane frames 102 includes four connected plate-shaped side edges 104 , and two adjacent side edges 104 are perpendicular to each other. The at least two backplane frames 102 are detachably assembled to form a height-adjustable backplane side frame 11 , and the base plate 101 is fixed to one end surface of the backplane side frame 11 to form an accommodating cavity 12 . The substrate 101 is fixed to one end surface of the backplane side frame 11 by screws or glue.

[0021] The at least two backplane frames 102 are fixed by any...

no. 2 example

[0030] see Figure 6 The structure of the direct-type backlight module 200 provided in this embodiment is basically the same as that of the direct-type backlight module 100 in the first embodiment, except that the screws are only used to fix the substrate 101 and the backlight adjacent to the substrate 101. The board frame 102 and every two back board frames 202 are fixed together by snap-fitting. Specifically, a protrusion 220 is provided on the side edge 204 of one of the backplane frames 202, and a card slot 210 matched with the protrusion 206 is arranged on the side edge 204 of the other backplane frame 102. The protrusion 220 may be a plurality of separated columns, or may be an annular protrusion surrounding the accommodating cavity.

no. 3 example

[0032] see Figure 7 The structure of the direct-type backlight module 300 provided in this embodiment is basically the same as that of the direct-type backlight module 100 in the first embodiment, the difference is that the screws are only used to fix the substrate 101 and the backplane adjacent to the substrate 101 frame 102 , and every two backplane frames 302 are fixed together by magnets 301 . Specifically, grooves are respectively provided on each backplane frame 302 , and a magnet 301 is fixed in the groove, so that the magnets 301 attract each other to fix the two backplane frames 302 .

[0033] In a word, all implementations that can fix and stack the backplane frame 102 can be used in the present invention, which will not be repeated here.

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PUM

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Abstract

The invention discloses a direct-type backlight module. The direct-type backlight module comprises a back plate, a light-emitting source and an optical film. The back plate comprises a basal plate and two or more back plate frames, the back plate frames are detachably assembled and matched to form a back plate lateral frame which is adjustable in height, and the basic plate and one end face of the back plate lateral frame are fixed to form a containing cavity. The light-emitting source is arranged at the bottom of the containing cavity, and the optical film is arranged on the other end face,with back to the basic plate, of the back plate lateral frame.

Description

technical field [0001] The invention relates to the display field, in particular to a direct-type backlight module and a liquid crystal display including the backlight module. Background technique [0002] A direct-lit backlight module usually includes a backplane, LED strips, optical film, etc. The LED light bar is arranged on the bottom surface of the backboard, and the optical film is arranged at the opening position of the backboard. The light emitted by the LED light bar is irradiated on the LCD panel after being diffused by the optical film. Since the light output angle θ is limited, and there is a certain distance between the LEDs on the LED light bar, a sufficient light mixing distance must be maintained. Uniformly irradiating the light on the optical film, wherein the light mixing distance is the vertical distance from the light emitting surface of the LED light source to the optical film. Since the same backlight module needs to be compatible with LED lights of d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357
CPCG02F1/133608
Inventor 黄一庭钟正发陈约翰陈志贤
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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