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Display device with integrated touch screen and driving method thereof

A display device and a display driving technology, applied in static indicators, cathode ray tube indicators, data processing input/output processes, etc., can solve problems such as level reduction, touch performance degradation, deviation, etc.

Active Publication Date: 2015-06-24
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, when the distance from the circuit unit becomes large, the level of the touch signal detected in the sensing area decreases, and for this reason, a decrease in touch performance and a deviation occur in each touch driving area

Method used

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  • Display device with integrated touch screen and driving method thereof
  • Display device with integrated touch screen and driving method thereof
  • Display device with integrated touch screen and driving method thereof

Examples

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Embodiment Construction

[0021] Reference will now be made in detail to exemplary embodiments of the present 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.

[0022] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0023] In the following, for convenience of description, a display device with an integrated touch screen according to an embodiment of the present invention is described as an example of an LCD device, but the present invention is not limited thereto. The present invention can be applied to various display devices such as FED, PDP, ELD and EPD. In addition, a description of the general structure of the LCD device is no longer provided.

[0024] figure 1 is a diagram schematically illustrating the structure of a display device with an integrated touch screen according t...

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Abstract

Disclosed is a display device with integrated touch screen (110). The display device includes a panel (100) configured to include a plurality of driving electrodes (112) and a plurality of sensing electrodes (114) and a display driver IC (200) configured to apply a common voltage to the plurality of driving electrodes (112) and the plurality of sensing electrodes (114) when the panel (100) operates in a display driving mode, and when the panel (100) operates in a touch driving mode, generate a driving pulse, which includes a maximum voltage with an overdriving voltage applied thereto and a minimum voltage with an under-driving voltage applied thereto, according to a timing pulse to apply the driving pulse to the plurality of driving electrodes (112), and respectively receive a plurality of sensing signals from the plurality of sensing electrodes (114).

Description

[0001] This application claims priority from Korean Patent Application No. 10-2013-0158957 filed on December 19, 2013, which is hereby incorporated by reference as if fully set forth herein. technical field [0002] The present invention relates to a display device, in particular to a display device with an integrated in-cell touch screen and a driving method thereof. Background technique [0003] A touch screen is an input device included in display devices such as liquid crystal display (LCD) devices, field emission displays (FED), plasma display panels (PDP), electroluminescence displays (ELD), and electrophoretic displays (EPD) , enabling the user to input information by directly touching the screen with hand, pen, etc. while watching the screen of the display device. [0004] In particular, demand has recently increased for display devices with integrated built-in touch screens, which include multiple built-in elements constituting a touch screen, for slimming portable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041
CPCG06F3/0412G06F3/04166G06F3/0446G06F3/0416G06F3/044G09G5/006
Inventor 李荣俊
Owner LG DISPLAY CO LTD
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