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Backlight of light-emitting diodes

A light-emitting diode and backlight technology, which is applied in the field of backlight, can solve problems such as the thickening of the backlight structure, and achieve the effects of improving brightness, improving heat dissipation performance, and increasing heat dissipation area

Active Publication Date: 2009-10-07
K TRONICS (SUZHOU) TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a light-emitting diode backlight, which can effectively solve the shortcomings of the existing light-emitting diode backlight by increasing the optical path to achieve uniform light mixing and resulting in a thicker backlight structure

Method used

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Embodiment Construction

[0028] The first solution of the LED backlight source of the present invention

[0029] figure 1 It is a schematic diagram of the structure of the first solution of the LED backlight of the present invention, such as figure 1 As shown, the LED backlight of this solution includes a first circuit board 21, a second circuit board 22, a plurality of first LEDs 31 and a plurality of second LEDs 32, and the light guide plate 1 is located on one side of the first circuit board 21 Several first light-emitting diodes 31 are uniformly fixed on the first circuit board 21, a light-transmitting hole 4 is opened between two adjacent first light-emitting diodes 31, and the second circuit board 22 is arranged in parallel on the first circuit board 21 On the other side, several second LEDs 32 are evenly fixed on the second circuit board 22, and the position of each second LED 32 corresponds to the position of the light-transmitting hole 4 on the first circuit board 21, so that the second The li...

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Abstract

The invention relates to a backlight of light-emitting diodes, comprising circuit boards and the light-emitting diodes which are fixedly connected on the circuit boards, the circuit boards comprise a first circuit board and a second circuit board which are arranged in parallel, first light-emitting diodes arranged on the first circuit board and second light-emitting diodes arranged on the second circuit board are staggeredly arranged, and light holes which lead light emitted by the second light-emitting diodes on the second circuit board to penetrate the first circuit board and be evenly mixed with the light emitted by the first light-emitting diodes on the first circuit board are arranged among the adjacent first light-emitting diodes on the first circuit board. The backlight of the light-emitting diodes can realize even mixing the light within a small distance, thereby meeting the pursuit of a liquid crystal display on light and thin properties; simultaneously, the backlight is provided with two layers of the circuit boards, and the light holes are arranged on the first circuit board, thereby being capable of increasing the heat radiation area of the circuit boards and improving the heat radiation performance of the circuit boards.

Description

Technical field [0001] The invention relates to a backlight source of a liquid crystal display device, in particular to a light emitting diode backlight source. Background technique [0002] The traditional liquid crystal display backlight is a cold cathode light emitting tube. In recent years, since the light emitting diode has the advantages of high color gamut, low consumption, and no pollution, more and more light emitting diodes are used as the backlight in the liquid crystal display field. Light-emitting diodes are small chips that emit light and are similar to point light sources. The current method of use is to weld the light-emitting diodes on a single-layer flat circuit board into a linear array or area array. After a certain optical path is uniformly mixed, it can be used as a linear light source or a surface. The light source is used. Due to the light-emitting characteristics of the LED light source, the light mixing in the near-light source area will be uneven, resul...

Claims

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Application Information

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IPC IPC(8): G02F1/13357F21V23/06G02F1/1335
Inventor 刘海军尹大根金哲润宋冠男
Owner K TRONICS (SUZHOU) TECH CO LTD
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