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Fingerprint sensor array and display device having the same

By using an electrode arrangement of transparent conductive materials and low-resistance metal materials in the fingerprint sensor array, the problems of dead zones and touch performance degradation in the fingerprint sensor area in the existing technology are solved, and higher recognition accuracy and resolution are achieved.

Active Publication Date: 2017-04-05
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the fingerprint recognition integrated capacitive touch screen, since the touch channel plays the role of the touch group channel 115, the mutual capacitance between the fine channel 113 (i.e., the touch channel) is greatly increased
Therefore, since such an increase in mutual capacitance causes deterioration of the sensing sensitivity of the touch sensor, when a touch operation is generated, there is a problem that the touch is not recognized.

Method used

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Embodiment Construction

[0060] Reference will now be made in detail to embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. In the following description, when a detailed description of a known function or construction related to this document is determined to unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. The described performance of process steps and / or operations is an example; however, the order of steps and / or operations is not limited to that set forth herein and may be changed as known in the art, except for steps and operations that must be performed in a specific order. / or operation. Throughout the specification, the same reference numerals designate the same elements. The names of the respective elements used in the following description are selected only for the convenience of writing the specification, and thus may be different from those used in actual products.

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Abstract

Provided are a fingerprint sensor and a display device including the same. A fingerprint sensor array includes: a plurality of first electrodes arranged in a first direction, each of the plurality of first electrodes including at least one of: a first transparent electrode including a transparent conductive material and a first metal electrode including a low-resistance metal material; a plurality of second electrodes arranged in a second direction crossing the first direction, each of the plurality of second electrodes including at least one of: a second transparent electrode including the transparent conductive material and a second metal electrode including the low-resistance metal material; and an insulating layer between the plurality of first electrodes and the plurality of second electrodes to insulate the first electrodes from the second electrodes.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application No. 10-2015-0138249 filed on Sep. 30, 2015, the entire disclosure of which is hereby incorporated by reference for all purposes. [0003] background technical field [0004] The present disclosure relates to a fingerprint sensor and a display device including the fingerprint sensor. Background technique [0005] With the development of computer technology, computer-based systems such as notebook computers, tablet PCs, smart phones, personal digital assistants, automatic teller machines, and search guide systems have been developed for various purposes. In order to protect the information or data stored in these systems, the security of these systems needs to be increased, because such information or data may include, for example, personal information and / or business information related to private life or trade secrets that need to be kept confidential. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044G06K9/00
CPCG06F3/044G06V40/1329G06V40/1306G06F2203/04111G06F2203/04112G06F3/0445G06F3/0446G06F3/041661G06F3/0448G06F3/041
Owner LG DISPLAY CO LTD