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Touch screen device and method for driving the touch screen device

A touch screen and equipment technology, applied in the input/output process of data processing, instruments, calculations, etc., can solve the problem of different ranges of noise

Active Publication Date: 2017-08-25
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the range of the noise of the charge change of the touch sensor may vary slightly depending on the product

Method used

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  • Touch screen device and method for driving the touch screen device
  • Touch screen device and method for driving the touch screen device
  • Touch screen device and method for driving the touch screen device

Examples

Experimental program
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Embodiment Construction

[0020] Reference will now be made in detail to embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. It should be noted that detailed descriptions of known arts will be omitted if it is determined that the arts can mislead the embodiments of the present invention.

[0021] figure 1 is a block diagram schematically showing a display device and a touch screen device according to a first embodiment of the present invention. refer to figure 1 , the display device includes: a display panel DIS, a gate drive circuit 10, a data drive circuit 20, a timing controller 30, a host system 70, and the like. The touch screen device includes a touch screen panel (TSP), a touch driving circuit 40, a touch coordinate calculation unit 50, and the like.

[0022] First, a display device according to an embodiment of the present invention...

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PUM

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Abstract

A touch screen device and a method for driving the touch screen device are provided, and the touch screen device includes: a touch screen panel including a plurality of Tx lines, a plurality of Rx lines, and touch screens formed at intersections of the Tx lines and the Rx lines. A sensor; a Tx driving circuit for supplying a driving pulse to the Tx line; and an Rx driving circuit for sampling a charge change of the touch sensor received through the Rx line, and converting the received charge change into touch raw data , wherein, the Rx drive circuit includes: a noise filter for removing noise from the signal received from the Rx line; an integrator for accumulating charge changes passing through the noise filter; a sampling circuit for accumulating the integrator The charge change is sampled; and an analog-to-digital converter is used to convert the charge change sampled by the sampling circuit into touch raw data, and the noise filter is a biquad band-pass filter including a variable resistor and a variable capacitor device.

Description

technical field [0001] The present invention relates to a touch screen device and a method for driving the touch screen device. Background technique [0002] A user interface (UI) enables a human (user) to communicate with various electric and electronic devices so that the user can easily control the devices as the user likes. Representative examples of the user interface are a keypad, a keyboard, a mouse, an on-screen display (OSD), a remote controller with an infrared communication or a radio frequency (RF) communication function, and the like. User interface technology continues to evolve toward increased user sensitivity and ease of operation. Recently, user interfaces are evolving into touch UIs, voice recognition UIs, 3D UIs, and the like. Touch UI tends to be mandatory in portable information devices, and is also extended to electronic home appliances. [0003] As an example of a touch screen for implementing a touch UI, mutual capacitive touch screen devices that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/044
CPCG06F3/0418G06F3/044G06F3/04182G06F3/04184G06F3/0446G06F3/041G06F3/0412
Inventor 李相龙姜亨远
Owner LG DISPLAY CO LTD