Touch circuit, touch driving circuit, touch display device, and method for driving touch circuit

Active Publication Date: 2019-06-13
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0028]As described above, according to aspects of the present disclosure, it is possible to provide a touch circuit, a touch driving circuit, a touch display device, and a method for driving the same which are capable of reducing initialization speed.
[0029]According to aspects of the present disclosure, it is possible to provide a touch circuit, a touch driving circuit, a touch display device, and a method for driving the same which are capable of reducing initialization speed and thus minimizing the loss of touch sensing data even if a malfunction occurs.
[0030]According to aspects of the present disclosure, it is possible to provide a touch circuit, a touch driving circui

Problems solved by technology

In an electronic device having a touch sensing function, such as a touch display device, a touch circuit, which receives a touch sensing sign

Method used

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  • Touch circuit, touch driving circuit, touch display device, and method for driving touch circuit
  • Touch circuit, touch driving circuit, touch display device, and method for driving touch circuit
  • Touch circuit, touch driving circuit, touch display device, and method for driving touch circuit

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Embodiment Construction

[0046]Hereinafter, exemplary aspects of the present disclosure will be described in detail with reference to the accompanying drawings. In assigning reference numerals to elements in the drawings, the same reference numerals will designate the same elements where possible although they are shown in different drawings. Also, in the following description of the present disclosure, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present disclosure rather unclear.

[0047]In addition, such terms as “first”, “second”, “A”, “B”, “(a)”, “(b)”, and the like, may be used herein when describing elements of the present disclosure. These terms are merely used to distinguish one element from other elements, and the essence of a corresponding element, an order thereof, a sequence thereof, or the number of the corresponding elements are not limited by the terms. When an element is described as being “connected”,

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Abstract

A touch display device includes a touch panel on which a plurality of touch electrodes is disposed; and a touch circuit configured to output a touch driving signal of a pulse type to the touch panel and to sense occurrence of touch or a touch position according to a touch synchronization signal for defining a touch period, wherein the touch circuit comprises: a touch driver configured to supply the touch driving signal to one or more of the plurality of touch electrodes to drive the touch electrodes in the touch period and to obtain sensing data by signal processing of a touch sensing signal detected from the driven touch electrodes; and a touch controller configured to receive the sensing data to sense occurrence of touch or a touch position and to determine whether the touch driver malfunctions, and to output a simplified initialization command to the touch driver when it is determined that the touch driver malfunctions, and the touch driver is initialized with a pre-stored set value maintained not changed upon receiving the simplified initialization command.

Description

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Claims

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Application Information

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Owner LG DISPLAY CO LTD
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