touch screen lcd repair.The infrared touch screen works with multiple pairs of infrared transmitting and receiving tubes. The performance and life of the infrared pair are reliable. Any object that blocks light can be used as a touch object. However, the infrared touch screen uses nearly 100 pairs of sensors and shares peripheral circuits. This requires that not only the performance of the sensor is good, but also that the " light - resistance characteristics " and " junction capacitance " of nearly 100 pairs of infrared diodes are consistent. In actual application, if any pair fails, it can be found during the power-on self-test and ignored afterwards. It is replaced by neighboring infrared rays. Since each pair of infrared rays only " supervises " a narrow band of about 6mm , and The thickness of a finger is usually around 15mm , which is imperceptible to the user. But if the production process does not carry out aging test on the infrared emitting tube, there is no good quality management system, and nearly 100 pairs of sensors will soon not be a one-to-two pair " behind the scene " problem, and the overall life will not be guaranteed. Therefore, users who purchase infrared screens should know whether the manufacturers have strict quality inspection methods or whether they have passed ISO9000 certification.

touch screen lcd repair.The infrared touch screen works with multiple pairs of infrared transmitting and receiving tubes. The performance and life of the infrared pair are reliable. Any object that blocks light can be used as a touch object. However, the infrared touch screen uses nearly 100 pairs of sensors and shares peripheral circuits. This requires that not only the performance of the sensor is good, but also that the " light - resistance characteristics " and " junction capacitance " of nearly 100 pairs of infrared diodes are consistent. In actual application, if any pair fails, it can be found during the power-on self-test and ignored afterwards. It is replaced by neighboring infrared rays. Since each pair of infrared rays only " supervises " a narrow band of about 6mm , and The thickness of a finger is usually around 15mm , which is imperceptible to the user. But if the production process does not carry out aging test on the infrared emitting tube, there is no good quality management system, and nearly 100 pairs of sensors will soon not be a one-to-two pair " behind the scene " problem, and the overall life will not be guaranteed. Therefore, users who purchase infrared screens should know whether the manufacturers have strict quality inspection methods or whether they have passed ISO9000 certification. IQTouch K interactive touch screen feature 20-point touch and dual system -- Android 8.0 system and optional OPS Windows 10Pro system. Its 4K UHD resolution facilitates presentations and collaboration. With optional multi-screen casting software, IQClass 6.0 and installation-free IQClass Plus software, IQTouch K Series can help create an interactive and collaborative teaching atmosphere in class.