Tablet having flexible and transparent sensing area

Abstract

The present invention relates to a tablet having a flexible and transparent sensing area, comprising: an insulating transparent base material having a first loop antenna and a plurality of comb-shaped first line antennas; and a scan substrate having, mounted thereon, a first MUX for selecting one of the ends of the plurality of first line antennas, an amplifier for outputting a potential difference between an output of the first MUX and the first loop antenna, and an MCU for generating a first selection signal and, on the basis of the potential difference from the amplifier, sensing the position of an electronic pen from one line antenna. The first loop antenna formed on the transparent base material is combined with a first conductive pattern formed on the scan substrate, thereby forming a closed loop. Each of the plurality of first line antennas is connected to each of a plurality of first extending patterns insulatively crossing the first conductive pattern on the scan substrate. The plurality of first extending patterns are connected to an input of the first MUX.

Description

technical field [0001] The present disclosure relates to a tablet having a flexible transparent sensing area, and more particularly to a tablet configured to be capable of sensing contact of an electronic pen with a surface of a flexible transparent film. Background technique [0002] Recently, electronic devices (tablet operating systems) that can be handled by touching the display surface with a finger or an electronic pen have become the focus of attention, such as smartphones and tablets. [0003] Also, in the tablet operating system, a predetermined electronic pen sensing area is set to handle the electronic device by using the electronic pen. For example, the position where the electronic pen touches the sensing area can be calculated in a Cartesian coordinate system. [0004] One such tablet operating system is disclosed in Korean Patent Application Publication No. 2008-86829 (hereinafter referred to as reference). In the reference, loop coils for sensing the positi...

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to form such a vertical structure using a transparent insulating board, so that in the prior art, there is no choice but to use an opaque, thick and rigid board

In this way, the prior art flat panel using an opaque and fixed type of substrate as the electronic pen sensing area is limited in the usage method and application of the flat panel

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