Keypad having three-dimensional patterns
a three-dimensional pattern and keypad technology, applied in the field of keys, can solve the problems of insufficient display of the whole shape insufficient recognition and aesthetic feeling of the three-dimensional pattern, and conventional keypads cannot meet this requirement for use, so as to increase recognition and aesthetic feeling.
Inactive Publication Date: 2011-09-29
ICHIA TECH
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Benefits of technology
"The present invention provides a keypad with three-dimensional patterns and a method for manufacturing it. The keypad has a base layer, a light-guiding plate, a pattern layer, a shielding layer, and a keycap layer. The pattern layer has multiple three-dimensional patterns on its front surface, while the shielding layer has hollowed regions to correspond to the patterns. The keycap layer is made with a plurality of keycaps that correspond to the patterns. The method involves preparing molds, filling them with resin, and curing it to form the pattern layer and keycap layer. The keypad has an improved recognition and aesthetic feeling due to the three-dimensional patterns."
Problems solved by technology
Therefore, it is an important issue for the manufacturers of keypad to develop keypad of more competitiveness to satisfy the request of modern people.
Therefore, the whole shape of the three-dimensional pattern cannot be displayed sufficiently, and thus the recognition and aesthetic feeling thereof are not good.
Further, since both the above-mentioned patent publications do not provide a light-guiding plate, the illuminated area is relatively small and thus it can be only applied to a relative small keypad or single keypad.
Therefore, for a keypad having a large operating area, the conventional keypad cannot satisfy this requirement for use.
As a result, the total thickness of the keypad would be large and thus increasing the weight thereof.
Therefore, it is not suitable for the electronic products that tend to be produced toward more and more compact.
As a result, the thickness of the electronic product cannot be reduced sufficiently.
Moreover, the refracting layer is a translucent body, so that the recognition and aesthetic feeling of the displayed second pattern are not good.
Method used
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[0040]The detailed description and technical contents of the present invention will be explained with reference to the accompanying drawings. However, the drawings are illustrative only, but not used to limit the scope of the present invention.
[0041]The keypad having three-dimensional patterns manufactured by the present invention includes a base layer 10, a light-guiding plate 11, a pattern layer 12, a shielding layer 13, a keycap layer 14, and a shaping layer 15, as shown in FIG. 13.
[0042]Please refer to FIGS. 2 to 8. The present invention provides a keypad having three-dimensional patterns and a method for manufacturing the same. The method includes the steps as follows.
[0043]a) A first mold 3 is prepared, and a first ultra-violet curable resin in filled the first mold 3 (FIG. 3). In this step, the first mold 3 has a rectangular block 31 made of a light-transmitting material. The top of the block 31 is provided with a recess 32. The inner surface of the recess 32 is provided with...
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Abstract
A keypad having three-dimensional patterns includes a base layer, a light-guiding plate, a pattern layer, a shielding layer and a keycap layer. The light-guiding plate is overlapped on the base layer. The pattern layer is provided on the light-guiding plate. A plurality of three-dimensional patterns is provided on the front surface of the pattern layer. The shielding layer is coated on the back surface of the pattern layer, and is formed with a plurality of hollowed regions to correspond to the three-dimensional patterns. The keycap layer is overlapped on the pattern layer and formed with a plurality of keycaps to correspond to the three-dimensional patterns.
Description
RELATED APPLICATIONS[0001]This application is a divisional application of U.S. patent application Ser. No. 12 / 060,545, filed on Apr. 1, 2008.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a keypad, and in particular to a keypad having three-dimensional patterns.[0004]2. Description of Prior Art[0005]With the progress and development of technology, modern consumers request electronic products such as mobile phone, personal digital assistant (PDA), ultra mobile personal computer (UMPC) to be designed in a more personalized and delicate manner. However, these electronic products can be only operated via keypad so as to transmit signals from a user to the electronic products or vice versa. Moreover, the user requests the keypad of the electronic product to be varied continuously. Therefore, it is an important issue for the manufacturers of keypad to develop keypad of more competitiveness to satisfy the request of modern people.[0006]Japa...
Claims
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IPC IPC(8): H01H13/76
CPCH01H13/83H04M1/23H01H2219/044H01H2219/056H01H2219/062H01H2221/002H01H2221/07H01H2221/0702H01H2229/044H01H2229/047H01H2229/056H01H2229/058H01H2231/022H04M1/22H01H13/88B29C41/20B41J5/00
InventorCHENG, JIAN-LI
OwnerICHIA TECH