Projection touch key
A button and projection technology, applied in the field of touch buttons, can solve the problems such as the inability to develop a transparent button operation panel, and achieve the effects of reducing production process requirements, magical operation experience, and easy replacement
Active Publication Date: 2010-11-17
JIANGSU HUITONG GRP
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Problems solved by technology
However, the back of the existing touch-sensitive button panel is directly connected to the processing circuit PCB, which cannot solve the technical problem of developing a transparent button operation panel.
Method used
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Embodiment Construction
[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0015] Such as figure 1 As shown, the present invention includes a button projection module 1 , a capacitive field strength detection module 2 and a control module 3 . Such as figure 2 As shown, the button projection module 1 includes an operation panel 4 , a circuit board 5 , and several actual button locations 6 and operation button locations 7 corresponding to each actual button location 6 . In this embodiment, there are six actual key positions and corresponding operation key positions, which are respectively used to control the TV volume increase and decrease, channel selection, power control, and menu control functions. The operating panel 4 and the circuit board 5 form a certain angle, which is 45° in this embodiment. The actual button position 6, the capacitive field strength detection module 2, and the control module 3 are installe...
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The invention discloses a projection touch key. The key comprises a key projection module, a capacitor field intensity detection module and a control module, wherein the key projection module comprises an operation panel, a circuit board, at least one real key and an operation key corresponding to the real key; a 0-90 degrees of angle is formed between the operation panel and the circuit board; the real key is arranged on the circuit board, the operation key is arranged on the operation panel, the operation key is in the projection region of the real key on the operation panel, and the distance between the real key and the operation key is less than 20cm. the real key is connected with the input end of the capacitor field intensity detection module, the output end of the capacitor field intensity detection module is connected with the input end of the control module, the capacitor field intensity detection module detects the change of capacitor field intensity between the real key and the operation key and transmits the change to the control module, and the control module performs key-press processing. By using the projection touch key, the separation of the key operation panel and the printed circuit board (PCB) can be realized.
Description
technical field [0001] The invention relates to a touch button, in particular to a projected capacitive touch button, which belongs to the technical field of touch buttons. Background technique [0002] Touch buttons have been developed for many years. The touch-sensitive operation panel has the advantages of firmness, wear resistance, insulation, dust isolation, and water isolation, and its appearance is beautiful and novel. However, due to cost and stability reasons, it has not become popular in electronic devices until recent years. Especially in some home appliances, the advantages of touch buttons are more obvious, and it has become a popular technology in recent years. The capacitive touch key widely used at present adopts the principle of capacitive sensing, which can detect the touch of a finger through a shell of insulating materials such as glass and plastic with a thickness of 15 mm. Most of the capacitive touch keys adopt the human-computer interaction method, t...
Claims
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IPC IPC(8): H03K17/96
Inventor 龙涛陶冬冬姚理觉刘江澜
Owner JIANGSU HUITONG GRP