The present invention relates to fabricating a pressing key; more particularly, relates to fabricating a luminescent solid key.
A general handheld device in the 3C (Computer, Communication and Consumer Electronics) field relies much of its functions and appearance on the pressing keys. The keys are required for operating and controlling the functions of a 3C device and for making its appearance beautiful Therefore, the keys play an important part both in its functions and in its appearance.
A key for a general handheld device is usually fabricated in two ways: one is to inject plastic material into a mold to obtain abase with keys on it; the other is to inject plastic material into a mold to obtain a plurality of single keys to be set on a base.
The key fabricated through either of the above two methods is coordinated with a mold so that a certain thickness is formed. As long as the functions of a mobile phone increase day by day, more components have to be put into a limited space so that a pressing key has to become thinner. Yet, as is said, no matter whether the key is deposed on an EL (Electro-Luminescent) film or is made of a LED (Light Emitting Diode), a certain thickness (about 0.8 millimeter) is required, where thinness is deprived and cost lies together with a complex procedure. Hence, the prior arts do not fulfill users' requests on actual use.
The main purpose of the present invention is to fabricate a luminescent solid key with thinness and even luminescence while saving cost and procedure
To achieve the above purpose, the present invention is a method for fabricating a luminescent solid key, comprising steps of obtaining a substrate having a base, an image layer a first conductive layer, a light-emitting layer, a dielectric layer, a second conductive layer and an insulation layer sequentially; pre-shaping the substrate; obtaining a pressing layer having a plurality of contacting units on the insulation layer; and cutting the substrate to obtain at least one lightening solid key. Accordingly, a novel method for fabricating luminescent solid key is obtained.
The present invention will be better understood from the following detailed description of the preferred embodiment according to the present invention taken in conjunction with the accompanying drawings in which
The following description of the preferred embodiment is provided to understand the features and the structures of the present invention.
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Step (A): A base is provided; and, an image layer is formed on a surface of the base.
Step (B): A first conductive layer is formed on the image layer.
Step (C): A light-emitting layer is formed on the first conductive layer.
Step (D): A dielectric layer is formed on the light-emitting layer.
Step (E): A second conductive layer is formed on the dielectric layer
Step (F): An insulation layer is formed on the second conductive layer so that a substrate, sequentially having the base, the image layer, the first conductive layer the light-emitting layer; the dielectric layer, the second conductive layer and the insulation layer, is obtained.
Step (G): The substrate is pre-shaped.
Step (H): A pressing layer having a plurality of contacting units is formed on the insulation layer of the substrate.
Step (I): Finally, the substrate is cut to obtain at least one lightening solid key.
Thus, with the above steps, a n novel method for fabricating a luminescent solid key is obtained.
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As a result, the present invention has the following characteristics:
1. The substrate can be extraordinarily thin. A film for preventing the fluorescent powder from getting wet is replaced with the film of the pressing key directly so that a thickness of a film layer is saved. Besides, the thickness of the film of the pressing key can be thicker than the original film used so that the wetness prevention can be better.
2. The shape is convex so that the luminescence obtained is even. Because the film of the pressing key is used as a base, the film can be fabricated into a solid form. In such a way the base can be stretched more easily than a general light-emitting film to be fabricated for a wider application.
3. The pressing keys can be rapidly and massively produced.
4. The cost and procedure can be saved. The present invention combines the original two processes for making a pressing key into a whole one process so that the cost is saved at the same time.
To sum up, the present invention is a method for fabricating a luminescent solid key, combining a pressing key and a film, where a luminescent solid key obtained is extraordinarily thin and the luminescence the key emitted is even.
The preferred embodiment herein disclosed is not intended to unnecessarily limit the scope of the invention. Therefore, simple modifications or variations belonging to the equivalent of the scope of the claims and the instructions disclosed herein for a patent are all within the scope of the present invention.