position detection device

Abstract

The invention provides a position-detecting device. A longitudinal magnetic head and a horizontal magnetic head are arranged for enhancing the magnetic induction between the magnetic head and a signal wire induction end; after the magnetic head repeatedly tilts and falls off and the relative position between the magnetic head and the signal wire induction end is shifted, the signal wire induction end can normally sense the magnetic head; one end of a linkage rod is rotatably connected with one end of a lever close to one end of the magnetic head; one end of a magnetic shielding plate is rotatably connected with the other end of the linkage rod; the linkage rod and the magnetic shielding plate are arranged, so that the linkage rod is driven by the lever to cover the magnetic shielding plate on the signal wire induction end so as to shield the detection when the magnetic head is tilted, and the poor induction of the induction signal caused by oversize magnetic force of the magnetic head is prevented; a cleaning unit is arranged for cleaning the magnetic head and the signal wire induction end, so that the magnetic head and the signal wire induction end are prevented from crystallizing and generating poor induction, the probability of poor induction is reduced, the crash times of the position-detecting device can be further reduced, the yield and capacity of products are promoted and the production cost is lowered.

Description

technical field [0001] The invention relates to the technical field of display panel manufacturing, in particular to a position detection device. Background technique [0002] Liquid Crystal Display (LCD) has many advantages such as thin body, power saving, no radiation, etc., and has been widely used, such as: mobile phone, personal digital assistant (PDA), digital camera, computer screen or notebook computer screen Wait. [0003] A thin film transistor liquid crystal display generally includes a housing, a liquid crystal panel disposed in the housing, and a backlight module disposed in the housing. Among them, the structure of the liquid crystal panel is composed of a thin film transistor array substrate (ThinFilm Transistor Array Substrate, TFT Array Substrate), a color filter substrate (ColorFilter, CF), and a liquid crystal layer (Liquid Crystal Layer) arranged between the two substrates. ), its working principle is to control the rotation of the liquid crystal molecu...

AI Technical Summary

Problems solved by technology

[0007] There are several defects in this position detection device: First, because the signal line sensing end 6' cannot be in contact with acid and organic matter, the outer surface needs to be wrapped with protective plastic, so that the magnetic head 4' and the signal line sensing end 6' cannot be directly connected to each other. Contact, it is easy to cause poor induction; second, you cannot use a magnetic head with strong magnetic force, because the magnetic head with strong magnetic force will cause the magnetic head 4' to separate from the signal line sensing end 6' when the glass substrate is pressed down on the roller 5', but still maintain the induction state. Cause poor induction; third, because the magnetic head 4' repeatedly tilts and falls, the relative position between the magnetic head 4' and the signal line sensing end 6' is easy to change, resulting in that although the magnetic head 4' falls, the signal line sensing end 6' cannot be sensed The situation of the signal causes poor induction; Fourth, when the position detection device is used for indium tin oxide (ITO) etching machine, because the machine is easy to crystallize, when the machine is in an idle state, the position detection device The magnetic head 4' and the signal line sensing end 6' will precipitate crystals, resulting in poor induction

The above-mentioned poor induction conditions will cause the machine to crash, resulting in the scrapping of the product. At the same time, each time the machine crashes, it is necessary to re-adjust the relative position of the magnetic head 4' of the position detection device and the sensing end 6' of the signal line, which takes a lot of time. thereby affecting production capacity

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