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Anti-false touch monolithic capacitive touch screen

A capacitive touch screen, single-chip technology, applied in electrical digital data processing, data processing input/output process, instruments, etc. Mutual capacitance induction, the effect of avoiding misjudgment

Active Publication Date: 2015-10-28
SHANTOU GOWORLD DISPLAY (PLANT II) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the peripheral circuit is arranged on the cover layer, when a finger touches the surface of the capacitive touch screen from the other side of the transparent substrate, there is a capacitance C2 between a certain peripheral circuit and the finger, and a capacitance C1 between the sensing electrode and the finger. When two peripheral lines form a capacitive loop with the sensing electrode through C2, C1, the system will think that the sensing electrode connected to the peripheral line and the sensing electrode have mutual capacitance induction, which leads to misjudgment
That is to say, when a finger touches the periphery of the capacitive touch screen, "jumping" false sensing often occurs, resulting in inaccurate positioning of the touch

Method used

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  • Anti-false touch monolithic capacitive touch screen
  • Anti-false touch monolithic capacitive touch screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 As shown, this single-chip capacitive touch screen for preventing false touch includes a transparent substrate 1, a sensing electrode layer 2 arranged on one side of the transparent substrate 1, a masking layer 3, peripheral circuits 4, an induced electric field blocking layer 5 and The blocking insulating layer 6; the masking layer 3 is located at the periphery of the sensing electrode layer 2, and the peripheral circuit 4 is arranged on the masking layer 3; the sensing electrode layer 2 includes a plurality of first sensing electrodes 201 extending along the first direction, a plurality of A second sensing electrode 202 extending along the second direction, and a jumper structure 203; the jumper structure 203 includes a bottom connection 2031, an insulating spacer 2032 and a top connection bridge 2033 that are sequentially stacked, and the jumper structure 203 is set At the intersection of the first sensing electrode 201 and the second sensing electro...

Embodiment 2

[0024] Such as figure 2 As shown, in the case that other parts are the same as the first embodiment, the difference is that: the induced electric field blocking layer 5 is patterned into a plurality of shielding lines 8, and each shielding line 8 corresponds to a peripheral circuit 4 one by one; Each shielded wire 8 is grounded through a resistor 9 .

Embodiment 3

[0026] Such as image 3 As shown, in the case that other parts are the same as the second embodiment, the difference is that: the shielded wire 8 is bent from the longitudinal direction to the transverse direction, including a transverse section 801 and a longitudinal section 802 that are independent of each other, and each transverse section 801 and The longitudinal sections 802 are all grounded through a resistor 9 .

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PUM

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Abstract

The invention relates to a touch-control error prevention monolithic capacitive touch panel, which comprises a transparent baseplate, a sensing electrode layer, a covering layer and a peripheral circuit, wherein the sensing electrode layer is arranged on one side surface of the transparent baseplate. The touch-control error prevention monolithic capacitive touch panel is characterized in that the capacitive touch panel also comprises an induced electric field blocking layer and a blocking insulating layer; the induced electric field blocking layer is arranged on the covering layer; the blocking insulating layer is arranged between the induced electric field blocking layer and the peripheral circuit; in addition, the blocking insulating layer leads the induced electric field blocking layer to be isolated from the peripheral circuit and leads the induced electric field blocking layer to be isolated from the edge of the sensing electrode layer. When a finger touches an area close to the edge of the sensing electrode layer, inductance capacitance cannot be caused between the finger and the peripheral circuit because the induced electric field blocking layer can play a role of shielding an induction field between the finger and the peripheral circuit, and the inductance capacitance can be generated between the finger and the sensing electrode layer, so that mutual capacitance induction can be avoided, the incorrect judgment on touch can be avoided, the interference with touch induction caused by the peripheral circuit can be avoided, and the positioning of touch can be more accurate.

Description

technical field [0001] The invention relates to a touch screen, in particular to a single-chip capacitive touch screen for preventing false touch. Background technique [0002] At present, a single-chip capacitive touch screen generally includes a transparent substrate, a sensing electrode layer arranged on one side of the transparent substrate, a masking layer and peripheral circuits, the masking layer is located around the sensing electrode layer, and the peripheral circuits are arranged on the masking layer. The peripheral circuit is electrically connected to the edge of the sensing electrode, and the sensing electrode layer includes a plurality of first sensing electrodes extending along the first direction, a plurality of second sensing electrodes extending along the second direction, and a jumper structure The jumper structure includes a bottom connection, an insulating spacer and a top connection bridge which are stacked in sequence, and the jumper structure is arrang...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/044
CPCG06F2203/04111G06F3/04164G06F3/0443G06F3/0446
Inventor 吕岳敏林钢吴永俊刘骥郑清交朱世健余荣陶木春
Owner SHANTOU GOWORLD DISPLAY (PLANT II) CO LTD