Partial erasing liquid-crystal handwriting board device and forming method thereof

Abstract

The invention discloses a partial erasing liquid-crystal handwriting board device and a forming method thereof. The partial erasing liquid-crystal handwriting board device comprises a liquid-crystal handwriting board and an erasing pen. The liquid-crystal handwriting board includes a substrate, a first conductive layer, an infrared absorbing material layer, a liquid crystal layer, a second conductive layer, and a flexible transparent substrate. The first conductive layer and the infrared absorbing material layer are arranged on the substrate in a basic dimension consistence manner. The first conductive layer and the second conductive layer are transparent conductive layers; the second conductive layer is formed on the flexible transparent substrate; and the substrate and the flexible transparent substrate jointly clamp the liquid crystal layer to form a liquid crystal box of the liquid-crystal handwriting board. The erasing pen includes an infrared emitting light source and a control switch. According to the partial erasing liquid-crystal handwriting board device, the partial erasing is realized by means of non-contact photothermal conversion; the erasing efficiency is high; the device is convenient to use; and energy-saving and low-cost effects are realized.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display applications, in particular to a device for partially erasing a liquid crystal tablet and a forming method thereof. Background technique [0002] At present, in the fields of education and business applications, liquid crystal writing tablets are more and more widely used, and the performance requirements of liquid crystal writing tablets promote the continuous development of liquid crystal writing tablet technology and the upgrading of products. The first-generation handwriting board is a digital board, and its production equipment is expensive and difficult to master, and the handwriting cannot be precisely controlled; with the rapid development of display technology, the second-generation capacitive screen board was born, which uses the static electricity of the human body to achieve touch operation and touch effect. Sensitive, but you can’t touch the screen after wearing gloves,...

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Problems solved by technology

The Chinese utility model patent with the application number CN201620117008.0 filed by the patentee Shenzhen Weiku Optoelectronics Co., Ltd. discloses a semiconductor thermal erasing technology, which uses a semiconductor block to heat the liquid crystal to an isotropic liquid, and the liquid crystal becomes weak after cooling. The multi-domain structure of scattering exists stably, so that the transition from the plane reflective state to the focal conic scattering state is realized, that is, the purpose of writing erasure is realized, but the heat transfer rate of the semiconductor is slow, and erasure within 2 seconds cannot be achieved, and there are Hidden dangers of burns, high energy consumption, and breakthroughs in low energy consumption and fast partial erasing technology are the keys to the widespread use of LCD tablets in the educational smart consumer electronics market.

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