Surface mounted device (SMD) light emitting diode (LED) device and display module thereof for outdoor display screen

An outdoor display screen and display module technology, which is applied in the direction of electric solid-state devices, semiconductor devices, instruments, etc., can solve the problems of limited adjustment of optical viewing angle range, poor heat dissipation effect of LED, complicated installation process, etc., and achieve stable production Difficult to control, excellent heat dissipation effect, simple process effect

Active Publication Date: 2011-05-04
FOSHAN NATIONSTAR OPTOELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] The technical solution of the present invention is to overcome the defects of the above-mentioned existing LED devices for outdoor display screens and the display modules prepared on the basis of them, that is, the LEDs for outdoor display screens have poor heat dissipation effect, complicated process, and low production efficiency. Low cost, high cost, and limited adjustment of the optical viewing angle range; and the problems of high product cost, poor consistency, complicated installation process, low production efficiency, and poor heat dissipation effect of the display module prepared based on it

Method used

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  • Surface mounted device (SMD) light emitting diode (LED) device and display module thereof for outdoor display screen
  • Surface mounted device (SMD) light emitting diode (LED) device and display module thereof for outdoor display screen
  • Surface mounted device (SMD) light emitting diode (LED) device and display module thereof for outdoor display screen

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Embodiment 1

[0059] According to attached image 3 , attached Figure 4 And attached Figure 5 , the first preferred embodiment of the SMD LED device for outdoor display screens of the present invention will be described in detail.

[0060] as attached image 3 As shown, the SMD LED device 3 for outdoor display screens includes: a new heat dissipation substrate 31, an LED chip 32 mounted on the shown new heat dissipation substrate 31, and a package that covers the shown LED chip 32 and has an elliptical optical lens structure colloid33.

[0061] Among them, as attached image 3 As shown in A, in this embodiment, the structure of the new heat dissipation substrate 31 includes a circuit substrate 311 with an integrated structure, a metal circuit 312 disposed on the circuit substrate 311 , and a chip placement portion 313 disposed on the circuit substrate 311 .

[0062] In the present invention, the preferred material of the circuit substrate 311 is required to have high heat-resistant p...

Embodiment 2

[0073] According to attached Image 6 , the second preferred embodiment of the SMD LED device for outdoor display screens of the present invention will be further described.

[0074] as attached Image 6 As shown, the difference between the structure of the SMD LED device in this embodiment and the structure of the SMD LED device in the first embodiment is that the metal circuit 312 does not have an internal lead connection part 41, but only an external electrode 42 composed of positive and negative electrodes. Composition; the metal lead wire 34 directly connects the electrode of the LED chip 32 with the external electrode 42; the packaging colloid 33 covers the shown LED chip 32, the metal lead wire 34 and the external electrode metal layer 1 421 on one side of the LED chip 32. In this embodiment, the structure of the external electrode 42 shown is consistent with the structure of the external electrode 42 disclosed in the first embodiment, and will not be described here ag...

Embodiment 3

[0076] According to attached Figure 7 , the third preferred embodiment of the SMD LED device for outdoor display screens of the present invention will be further described.

[0077] as attached Figure 7 As shown, the difference between the SMD LED device in this embodiment and the SMD LED device in the first embodiment lies in that the structures of the external electrodes shown are different. In this embodiment, the external electrode 42 is composed of positive and negative electrodes, and each electrode is respectively composed of a metal layer 1 427 covering the upper surface of the circuit substrate, a metal layer 2 428 covering the lower surface of the circuit substrate, and a metal layer covering the upper and lower surfaces of the circuit substrate. Metal layer 3 429 on the side of the middle, and metal layer 1 427, metal layer 2 428 and metal layer 3 429 are integrated, so that there is no need to prepare electrode through holes 423 on the external electrodes 42, th...

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Abstract

The invention provides a surface mounted device (SMD) light emitting diode (LED) device and a display module thereof for an outdoor display screen. The invention solves problems of LED devices for current outdoor display screens, such as poor thermal discharge effect, complicated technology, low production efficiency, high cost, limited light emitting, and poor consistency. The display module provided by the invention effectively avoids quality problem of uneven light spots of the current outdoor display screens in the prior art, greatly improves quality and yield of the outdoor display screen, and reduces cost. The outdoor display module with the SMD LED device comprises an LED panel, a shell and sealing glue, wherein the LED panel is arranged inside the shell and the sealing glue is applied on the LED panel. The SMD LED device for the outdoor display screen has the advantages of low cost, simple structure and good thermal discharge effect and is suitable for down-stream batch production. The outdoor display module with the SMD LED device provided by the invention has low cost and simple technology, and can effectively improve resolution and quality of outdoor display screens.

Description

technical field [0001] The invention relates to a surface-mounted (SMD) LED device for an outdoor display screen and a display module thereof, in particular to an SMD LED device for an outdoor display screen with a through-hole structure and a display module thereof. Background technique [0002] Outdoor light-emitting diode (LED) display is a new type of information display media rapidly developed in the world in the late 1980s. It is a display screen composed of dot matrix modules or pixel units composed of LEDs. Its appearance makes up for the shortcomings of the previous information release media such as magnetic flaps and neon lights. With its rich colors, patterns, real-time dynamic display modes, perfect multimedia effects and strong visual impact, it combines information, text, Displayed in multiple ways such as pictures, animations and videos, it has become an epoch-making product for information dissemination, and has been widely used in railways, highways, squares...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/075H01L33/00G09F9/33
CPCH01L2224/16225H01L2224/48091H01L2224/48227H01L2224/48465
Inventor 余彬海夏勋力李伟平李军政李程梁丽芳
Owner FOSHAN NATIONSTAR OPTOELECTRONICS CO LTD
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