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It has applications in flat film keyboards. In the initial stage of thin-film keyboard, the key position, shape and size are indicated by different colors. Stereoscopic thin-film keyboards: Typically, the keys on a thin-film keyboard are simply colored to represent the position, shape, and size of the key body. In this way, only by the operator's vision to identify the accuracy of the operation, because there is no appropriate feedback information that indicates whether the finger is pressed in the effective range of the switch to make the switch action, thus affecting the overall monitoring confidence and operation speed. A kind of open key body slightly raised, slightly higher than the panel, forming a three-dimensional shape of the film keyboard, called the stereo key switch. Stereoscopic keys can not only accurately set the range of the key body, improve the identification speed, so that the operator's sense of touch is more sensitive, but also improve the decorative effect of the product appearance. The production of three-dimensional keys, must be in the design stage of the panel to make arrangements, with process holes, in order to press the mold when precise positioning, the height of the three-dimensional convex should not be more than twice the thickness of the base material. For the appearance of beautiful products, the raised film keyboard can have a variety of raised.
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