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Touch sensing system

A touch sensing and touch sensor technology, applied in the field of touch sensing systems, can solve the problems of reduced data accuracy, increased data processing, and reduced signal-to-noise ratio of sensor signals.

Active Publication Date: 2015-07-01
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has the problem that the signal-to-noise ratio of some sensor signals decreases
Therefore, the processing amount of data increases and the data processing time increases
Also, when there is a large output deviation between ICs, the accuracy of the data will be degraded

Method used

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Examples

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Embodiment Construction

[0025] The display device according to an exemplary embodiment of the present invention may be implemented based on a flat panel display such as a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP), an organic light emitting display, and an electrophoretic display (EPD). In the following description, an embodiment of the present invention will be described using a liquid crystal display as an example of a flat panel display. However, other flat panel displays may also be used.

[0026] A touch sensing system according to an embodiment of the present invention may be implemented by a capacitive touch screen that senses a touch input through a plurality of capacitive sensors. A capacitive touch screen includes multiple touch sensors. Each touch sensor has capacitance. This capacitance is divided into self-capacitance and mutual capacitance. Self-capacitance is formed along a single-layer wire formed in one direction. Mutual capacitance...

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Abstract

A touch sensing system includes a plurality of touch sensors, sensing lines connected to the touch sensors, a touch sensing integrated circuit (IC) sensing a touch input using signals received through a plurality of receiving channels, a plurality of differential amplifiers which are formed between the sensing lines and the receiving channels of the touch sensing IC and amplify a difference between touch sensor signals received through adjacent sensing lines, and a multiplexer which connects the adjacent sensing lines to input terminals of each differential amplifier in a forward sensing mode and switches the adjacent sensing lines connected to the input terminals of each differential amplifier in a reverse sensing mode.

Description

[0001] This application claims priority from Korean Application No. 10-2013-0168601 filed Dec. 31, 2013, which is hereby incorporated by reference for all purposes as if fully set forth herein. technical field [0002] The present invention relates to a touch sensing system. Background technique [0003] A User Interface (UI) is configured to enable users to communicate with various electronic devices and thus to easily and comfortably control the electronic devices as they wish. Examples of user interfaces include keypads, keyboards, mice, on-screen displays (OSDs), and remote controls with infrared or radio frequency (RF) communication capabilities. User interface technology continues to evolve to increase user sensitivity and ease of operation. Recently, user interfaces have been developed to include touch UIs, voice recognition UIs, 3D UIs, and the like. [0004] Touch UI is indispensable in portable information devices. The touch UI is implemented by a method of form...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/044
CPCG06F3/044G06F3/04182G06F3/04184G06F3/0443G06F3/0446G06F3/0418
Inventor 韩圣洙姜成奎
Owner LG DISPLAY CO LTD
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