Transparent coil plate and manufacturing method thereof, transparent electromagnetic induction plate and display device

Abstract

The application discloses a transparent coil board and a manufacturing method thereof, a transparent electromagnetic induction board and a display device. The manufacturing method includes processing the conductive layer of the transparent conductive substrate into a plurality of first transparent induction lines arranged in parallel; forming a plurality of via holes on the transparent conductive film; pasting the transparent conductive film on the transparent conductive substrate, and making the conductive layer of the transparent conductive film The layer is treated as a plurality of second transparent sensing lines arranged in parallel, and the end-to-end adjoining ends of the first transparent sensing line and the second transparent sensing line correspond in turn; conductive fillings are formed in several via holes, so that the first transparent sensing line and the second transparent sensing line The end-to-end adjoining ends of the transparent sensing wires are electrically connected to form a complete helical coil loop. The manufacturing method provided by this application requires simple process equipment, does not require a copper sinking process, and has high efficiency; and the finally formed transparent electromagnetic induction board can be placed on the front of the display screen, so that when the electromagnetic pen is touched, the interference of the display screen is reduced.

Description

technical field [0001] The present application relates to the technical field of touch display devices, in particular to a transparent coil board and a manufacturing method thereof, a transparent electromagnetic induction board and a display device. Background technique [0002] At present, there are more and more types of intelligent interactive display devices on the market. Among them, the electromagnetic induction board is the handwriting board technology that is widely used now. The principle is to form an electromagnetic field within a certain space range after the X and Y direction circuits are energized by the wiring under the handwriting board to sense the position of the pen tip with the coil to work. This technology is currently widely used, mainly due to its good performance, which can write smoothly and feel good. [0003] The basic principle of the electromagnetic screen is to recognize sliding by the magnetic field changes generated by the sensor under the pa...

AI Technical Summary

Problems solved by technology

[0004] At present, the induction coil of the electromagnetic induction board is made by making intermittent first induction lines and second induction lines on both sides of the PET substrate. objects, connecting the induction lines on both sides of the substrate to form a complete induction coil; in this traditional manufacturing process, the intermittent induction lines on both sides need to be connected, which requires a finer drilling process and higher equipment requirements; at the same time, because the thickness of the substrate is relatively Thick, low production efficiency when sinking copper filling

[0005] In addition, because the induction lines on both sides of the PET board used in the traditional electromagnetic induction board process are also non-transparent metal wires, this will cause a large number of metal wires and metal overlapping points in the induction area of ​​the electromagnetic induction board, making the electromagnetic induction board The sensing area of ​​the board has poor visibility, and the overall electromagnetic induction board is also thick and heavy, so it cannot be placed in front of the display screen, so the traditional electromagnetic induction board is usually placed behind the display screen

And because the display screen is separated between the electromagnetic induction board and the electromagnetic pen, the electromagnetic induction will be interfered by the display screen, and the induction effect is not good.

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