1. Field of the Invention
The present invention relates to an electrically conductive substrate, and more particularly to an electrically conductive substrate with high heat conductivity.
2. Description of the Related Art
Generally, a PCB substrate is used for electrical components to electrically connect to each other. However, conventional PCB substrates have low heat conductivity. Because electric components generate much heat or because the conventional PCB substrate is used in a closed environment such as inside a notebook computer, heat does not dissipate easily. Therefore, the electric components are damaged easily.
A conventional high-power light emitting Diode (LED) is one electric component that generates very much heat.
With the development of the LED, the LED can provide different colors of lights, namely, red, yellow, green, blue or white light. With the improvement of light intensity in the LED, the LED is gradually replacing traditional lighting.
To obtain a desired lighting effect, different LEDs are connected together and mounted on a conventional PCB substrate to efficiently provide the desired illumination.
However, LEDs generating high heat mounted on the conventional low heat conductive PCB substrate increase the chance of damage.
Therefore, the invention provides an electrically conductive substrate with high heat conductivity to mitigate or obviate the aforementioned problems.
The main objective of the present invention is to provide an electrically conductive substrate with a high heat conductivity to reduce damage and increase the efficiency.
Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
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A graphite layer (50) is formed on the rough surface of the circuit layer (40). The graphite layer (50) may be electroplated on the circuit layer (40). With the rough surface of the circuit layer (40), the graphite layer (50) easily connects to the circuit layer (40) to protect the circuit layer (40).
The electric components are respectively provided on the holes (11) by means of cohesion and connect to each other by the circuit layer (40).
Meanwhile, the heat generated by the electric components is dissipated effectively by the aluminum plate (10). Hence, the substrate of the present invention can be widely applied in TFT-LCD TV, lighting equipment with dense LCD or laptop.
It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only. Changes may be made in details, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
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4601916 | Arachtingi | Jul 1986 | A |
4732636 | Varker | Mar 1988 | A |
4769270 | Nagamatsu et al. | Sep 1988 | A |
6159586 | Inoue et al. | Dec 2000 | A |
6373000 | Nakamura et al. | Apr 2002 | B2 |
7112285 | Chakravorty | Sep 2006 | B2 |
Number | Date | Country | |
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20080254207 A1 | Oct 2008 | US |