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Display device having touch screen panel

A display device and touch screen technology, applied in the input/output process of data processing, optics, instruments, etc., can solve problems such as noise induction

Inactive Publication Date: 2012-05-09
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the related art touch screen panel, there is a problem that noise is induced to the common electrode 37 due to the parasitic capacitance

Method used

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  • Display device having touch screen panel
  • Display device having touch screen panel
  • Display device having touch screen panel

Examples

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Embodiment Construction

[0036] Examples of various embodiments will now be described in detail with reference to the accompanying drawings. Throughout the specification, the same reference numerals refer to the same parts.

[0037] refer to Figure 3 to Figure 5 , a display device according to an exemplary embodiment of the present invention includes a liquid crystal display panel 100 having a color filter array CFA and a thin film transistor array TFTA, a backlight unit BLU, a timing controller 101, a data driving part 102, a gate driving part 103, a power supply part 110 , host 120 , touch screen panel 200 , first conductive pattern driving circuit 210 , second conductive pattern driving circuit 230 , touch controller 250 , touch sensing processor 270 and common voltage feedback circuit 290 . The liquid crystal display device includes a color filter array CFA, a thin film transistor array TFTA, a liquid crystal layer LC disposed between the color filter array CFA and the thin film transistor array...

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Abstract

A display device having a touch screen panel includes a display panel includes a common electrode; a touch screen panel including a plurality of first conductive patterns that are formed on one surface of the display panel and arranged in a first direction, and a plurality of second conductive patterns that are electrically insulated from the plurality of first conductive patterns and arranged in a second direction to cross over the first conductive patterns; a power source circuitry to supply a first common voltage to the common electrode and to supply a pulse voltage to at least one of the plurality of first and second conductive patterns; and a common voltage feedback circuit to remove an induction voltage induced to the common electrode by the pulse voltage supplied to the at least one of the plurality of first and second conductive patterns.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2010-0096105 filed on October 1, 2010, which is hereby incorporated by reference in its entirety as if fully disclosed herein. technical field [0003] The present invention relates to a display device, and more particularly, to a display device with a touch screen panel. Background technique [0004] The interface between the display device and the user is typically provided using various input devices such as keyboards, mice, trackballs, joysticks, and digitizers. However, the user has to learn how to use the input device, and the input device occupies a separate space. Therefore, it is inconvenient to use a display device with a separate input device in consideration of user satisfaction. Therefore, there has been an increasing demand for a simple and convenient input device capable of reducing malfunctions. In order to meet this d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041
CPCG06F3/0418G02F1/13338G06F3/044G06F3/04182G06F3/0445G06F3/0446G06F3/0412
Inventor 黄仁卓赵南均
Owner LG DISPLAY CO LTD
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