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1149 results about "Liquid-crystal display" patented technology
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A liquid-crystal display (LCD) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals. Liquid crystals do not emit light directly, instead using a backlight or reflector to produce images in color or monochrome. LCDs are available to display arbitrary images (as in a general-purpose computer display) or fixed images with low information content, which can be displayed or hidden, such as preset words, digits, and seven-segment displays, as in a digital clock. They use the same basic technology, except that arbitrary images are made up of many small pixels, while other displays have larger elements. LCDs can either be normally on (positive) or off (negative), depending on the polarizer arrangement. For example, a character positive LCD with a backlight will have black lettering on a background that is the color of the backlight, and a character negative LCD will have a black background with the letters being of the same color as the backlight. Optical filters are added to white on blue LCDs to give them their characteristic appearance.
Multifunctional health device
PendingCN113908048ALow costEasy to useDevices for heating/cooling reflex pointsElectrotherapyLiquid-crystal displayElectric heating
The invention discloses a multifunctional health device which comprises a main machine, a turning cover is arranged at the top end of the main machine, a liquid crystal display screen and a touch key are arranged on the inner side of the turning cover, three output ports are formed in the outer side of the main machine, and the three output ports are used for being connected with a physiotherapy cushion, a foot physiotherapy device and an electric heating moxibustion device respectively. A control unit is arranged in the main machine, the input end of the control unit is electrically connected with a power supply, the output end of the control unit is electrically connected with a low-frequency control module, a high-frequency control module and an output module, the output ends of the low-frequency control module and the high-frequency control module are electrically connected with an output switcher, the output switcher is electrically connected with the input end of the output module, and the output end of the output module is electrically connected with a physiotherapy cushion, the foot physiotherapy device and the electric heating moxibustion device. According to the multifunctional health device with the design, one main machine can be connected with the physiotherapy cushion, the foot physiotherapy device and the electric heating moxibustion device at the same time, the cost is saved, and the use is convenient.
Owner:刘振