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A direct type backlight module and display device

A backlight module and direct-type technology, applied in optics, nonlinear optics, instruments, etc., can solve problems affecting the light output of LED lamps and deformation of reflectors, and achieve the effect of ensuring light output and strengthening anti-deformation ability

Active Publication Date: 2020-10-16
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a direct-type backlight module to solve the problem that the deformation of the reflector affects the light output of the LED lamp

Method used

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  • A direct type backlight module and display device
  • A direct type backlight module and display device
  • A direct type backlight module and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In this embodiment, the reinforcing sheet is fixed on the printed circuit board by means of gluing, riveting, or screw fastening, and may also be integrally formed with the printed circuit board. Specifically, such as Figure 5 It is a structural schematic diagram of the reinforcing sheet on the printed circuit board, and the reinforcing sheet includes a first reinforcing sheet 501 and a second reinforcing sheet 502 . Since the reflective sheet around the through hole needs to be reinforced, the reinforcing sheet is arranged at the LED lamp 305 to correspond to the through hole of the reflective sheet. Specifically, the first reinforcing sheet 501 and the second reinforcing sheet 502 are respectively arranged on two sides of the printed circuit board 304 and located on two sides of the LED lamp 305 through the fixed ends. The first and second reinforcing pieces respectively include a free end: a first end portion 503 and a second end portion 504 . Both the first end p...

Embodiment 2

[0036] The difference between this embodiment and Embodiment 1 is that the reinforcement sheet corresponding to each LED lamp in Embodiment 1 includes two reinforcement sheets, and the two reinforcement sheets are respectively located at the sides of the printed circuit board, while this embodiment is different from each LED lamp. There is one reinforcing sheet corresponding to the LED lamp, which is located above the printed circuit board and completely covered on the printed circuit board. The reinforcing sheet is in the shape of a strip and includes two ends, a third end 701 and a fourth end 702, and the two ends are respectively located on two sides of the LED lamp.

[0037] Such as Figure 7 It is a structural schematic diagram of a reinforcing sheet located on a printed circuit board according to another embodiment of the present invention. The reinforcing sheet is fixed on the printed circuit board and is perpendicular to the length direction of the printed circuit boar...

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Abstract

The invention provides a direct type backlight module, which comprises an LED lamp strip and a reflector plate, wherein the LED lamp strip comprises a plurality of LED lamps arranged at intervals; the reflector plate is paved at the upper part of the LED lamp strip and a through hole through which an LED lamp passes is formed in the position corresponding to the LED lamp; and the reflector plate is provided with at least one socket in the periphery of the through hole. The backlight module also comprises at least one reinforcing plate fixed on the LED lamp strip, wherein the reinforcing plate comprises the end part corresponding to the socket; and the reinforcing plate is inserted into the socket from the lower part of the reflector plate to the upper part of the reflector plate along the direction parallel to the reflector plate, the end part extends out of the upper part of the reflector plate and the rest part is located at the lower part of the reflector plate. Through the reinforcing plate, the strength of the reflector plate at the position of the socket is reinforced and the reflector plate is prevented from deforming.

Description

technical field [0001] The invention relates to the display field, in particular to a direct-lit backlight module and a display device. Background technique [0002] The backlight modules of LED LCD TVs can be classified into two types based on the placement of the backlight: side-lit and direct-lit. [0003] Such as figure 1 It is a schematic structural diagram of a backlight module of a direct-lit LED LCD TV. The direct-lit backlight module includes a backplane 101 on which a plurality of LED light bars 102 and reflectors 103 are sequentially arranged. Specifically, the LED light bar is composed of a printed circuit board and LED lamps electrically connected to the printed circuit board. In order to reduce the light mixing distance, each LED lamp is provided with an optical lens, and the optical lens is a special The concave lens can diffuse the light emitted by the LED light to avoid light shadows and bright spots on the display screen. In order to improve brightness a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357
CPCG02F1/133603G02F1/133605
Inventor 丛晓东区可坚张志睿
Owner HISENSE VISUAL TECH CO LTD
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