Optical touch display device and driving method thereof

#This application claims the benefit of Korean Patent Application Nos. 10-2014-0076781 filed on Jun. 23, 2014, and 10-2015-0085230 filed on Jun. 16, 2015, both of which are hereby incorporated by reference for all purposes as if fully set forth herein.

#Field of the Invention

#The present invention relates to an optical touch display device, and more particularly, to an optical touch display device which is advantageous in high-speed driving, large-area touch sensing, and multi-touch sensing because of use of an image map and which can improve touch sensing performance and a driving method thereof.

#The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principle of the invention. In the drawings:

#FIG. 1 is a diagram schematically illustrating an infrared type touch screen device according to the related art.

#FIG. 2 is a diagram schematically illustrating an in-cell touch type display device according to the related art.

#Reference will now be made in detail to the 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. In the following description of the present invention, if detailed description of elements or functions known in the art of the present invention is not related to the subject matter of the present invention, the detailed description will be omitted.

#Advantages and features of the invention and methods for achieving the advantages or features will be apparent from embodiments described below in detail with reference to the accompanying drawings. However, the invention is not limited to the embodiments but can be modified in various forms. The embodiments are merely for completing disclosure of the invention and are provided to completely inform those skilled in the art of the scope of the invention. The scope of the invention is defined by only the appended claims.

#Shapes, sizes, ratios, angles, number of pieces, and the like illustrated in the drawings for the purpose of explaining the embodiments of the invention are exemplary and thus the invention is not limited to the illustrated items. Like reference numerals in the entire specification denote like elements. When it is determined that detailed description of known techniques involved in the invention makes the gist of the invention obscure, the detailed description thereof will not be made. When “include,” “have”, “be constituted”, and the like are mentioned in the specification, another element may be added unless “only” is used. A singular expression of an element includes two or more elements unless differently mentioned.