Low power consumption thin and medium size acoustic wave touch screen
A touch screen, small size technology, applied in the field of human-computer interaction in computer science, can solve problems such as high cost and low yield, achieve low power consumption, high precision touch requirements, and reduce power consumption.
Active Publication Date: 2015-10-28
JIANGSU CAS INTERNET OF THINGS TECH VENTURECAPITAL
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Problems solved by technology
However, the capacitive touch screen is still the mainstream in the market. Due to the influence of manufacturing process and other factors, the yield rate of medium-sized (10 inches and above) is low and the cost is high.
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[0022] The present invention will be further described below in conjunction with specific drawings and embodiments.
[0023] For the traditional surface acoustic wave touch screen, the main factor leading to its high power consumption is that the surface acoustic wave touch screen adopts the active detection method. Response speed requirements) send an acoustic pulse, this method is called active detection, this method increases the overall power consumption of the system. To solve this problem, the present invention includes a touch screen body 102 and an active detection circuit located on the touch screen body 102 for detecting touch operations; the touch screen body 102 is provided with a number of passive on-duty sensors 140, the passive The on-duty sensor 140 is connected to the active detection circuit; when the operation of the touch screen body 102 triggers the passive on-duty sensor 140, the passive on-duty sensor 140 outputs a touch trigger signal to the active dete...
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The invention relates to a lower-power consumption light-thin type medium / small-sized sound wave touch screen. According to the technical scheme provided by the invention, the lower-power consumption light-thin type medium / small-sized sound wave touch screen comprises a touch screen body and an initiative detection circuit, wherein the initiative detection circuit is positioned on the upper surface of the touch screen body and is used for detecting the touch operation, and a plurality of passive watching sensors are arranged under the touch screen body, the passive watching sensors are connected with the initiative detection circuit. When the touch screen body is operated and the passive watching sensors are triggered, touch trigger signals can be output to the initiative detection circuit by the passive watching sensors, thus the initiative detection circuit can be accessed to an initiative detection state from a dormant state, and the touch operation on the touch screen body can be detected through the initiative detection circuit; and after the touch operation is finished, the initiative detection circuit returns to the dormant state. The lower-power consumption light-thin type medium / small-sized sound wave touch screen disclosed by the invention has the advantages that the structure is compact, the thickness of the touch screen body is reduced, and the touch detection in low power consumption and high accuracy can be realized.
Description
technical field [0001] The invention relates to a touch screen, in particular to a low-power, thin, medium-sized and small-sized acoustic wave touch screen, specifically a technology for direct human-computer interaction based on touch, and belongs to the technical field of human-computer interaction in computer science. Background technique [0002] With the rapid development of modern public information services and the popularization of personal mobile communication devices and comprehensive information terminals, touch screen has become the main means of human-computer interaction due to its advantages of ease of operation, intuition and flexibility. Its main application fields include: New personal comprehensive information terminals such as tablet computers and smart phones; public information interactive terminals such as book retrieval platforms, travel information inquiries, and game console control platforms; business management aspects such as video conference cont...
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IPC IPC(8): G06F3/043G06F1/32
Inventor 黄奎
Owner JIANGSU CAS INTERNET OF THINGS TECH VENTURECAPITAL