Unlock instant, AI-driven research and patent intelligence for your innovation.

Touch Sensor with Fingerprint Sensor

A touch sensor and fingerprint sensor technology, applied in the field of touch sensors, can solve problems such as difference in light transmittance, darkening of the transparent electrode structure 1, etc., and achieve the effect of eliminating brightness difference

Pending Publication Date: 2021-07-16
SK INNOVATION CO LTD +1
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] in order to figure 1 and figure 2 The shown conventional transparent electrode structure 1 for a fingerprint sensor is used on a display together with an ordinary touch sensor, and the structure constituting the touch sensor and the transparent electrode structure 1 need to be arranged together, however, since the structure composed of a single layer There is a problem that the portion where the transparent electrode structure 1 is located becomes dark due to the difference in the amount of light transmitted between the touch sensor and the transparent electrode structure 1 formed by overlapping two different electrodes.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Touch Sensor with Fingerprint Sensor
  • Touch Sensor with Fingerprint Sensor
  • Touch Sensor with Fingerprint Sensor

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0058] image 3 An exploded state of the touch sensor including the fingerprint sensor according to the first embodiment of the present invention is shown.

[0059] image 3 The illustrated components of the touch sensor including the fingerprint sensor according to the first embodiment of the present invention may not be represented as image 3 Manufactured in a disassembled / assembled manner to each other as shown, image 3 It is only shown to aid understanding.

[0060] Such as image 3 As shown, the touch sensor including a fingerprint sensor according to the first embodiment of the present invention may include a base film 210 , a lower electrode layer 220 , a dielectric layer 230 , an upper electrode layer 240 and a cover layer 250 .

[0061] Such as image 3 As shown, the base film 210 , the lower electrode layer 220 , the dielectric layer 230 , the upper electrode layer 240 and the capping layer 250 may be formed on one side.

[0062] image 3 The base film 210 s...

no. 2 example

[0083] A touch display device to which a touch sensor including a fingerprint sensor according to a second embodiment of the present invention is applied will be described in detail below with reference to the accompanying drawings.

[0084] The above-mentioned lower electrode layer and upper electrode layer of the touch sensor according to the first embodiment of the present invention respectively include the first dummy electrode and the second dummy electrode, thereby achieving uniform light transmittance. However, in a touch display device using a touch sensor including a fingerprint sensor according to a second embodiment of the present invention described below, the brightness of the touch display device is made uniform by adjusting the local brightness of the light emitting layer by a separate control unit without Use dummy electrodes. A touch display device using a touch sensor including a fingerprint sensor according to the second embodiment of the present invention m...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
widthaaaaaaaaaa
Login to View More

Abstract

The present invention is to provide a touch sensor with a fingerprint sensor capable of making brightness uniform by removing a difference in brightness in a portion to which a touch sensor and the fingerprint sensor are applied, in which an output of a touch display device of uniform brightness may be obtained by applying dummy electrodes to a portion constituting the touch sensor to change a structure so that light transmittances of the fingerprint sensor and the touch sensor are the same as or similar to each other or controlling a portion at which the finger sensor is positioned in an entire region of a light emitting layer to be brighter than the rest portion by a control unit of touch display devices to which the fingerprint sensor according to various embodiments of the present invention is applied.

Description

technical field [0001] The present invention relates to a touch sensor including a fingerprint sensor. Background technique [0002] In recent years, screens of mobile devices tend to be enlarged, and therefore, developments are being made in such a way as to minimize or eliminate physical buttons such as a home button. According to the trend of removing such physical buttons, the development of buttons integrated with the display is accelerated. In addition, according to the trend of buttons using fingerprints, it is necessary to develop a fingerprint sensor integrated with a display. [0003] A fingerprint sensor generally adopts a capacitive method, and can be roughly divided into a unit battery driving method and a matrix driving method. The unit cell drive method consists of multiple unit cells that individually drive the sensor for fingerprint recognition. Various materials such as indium tin oxide or silicon can be used, and it has the advantage of low noise, but th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044G06F3/041G06K9/00
CPCG06F3/0445G06F3/04164G06V40/1318G06F3/0446G06V40/1306
Inventor 金俊亨池尚胤朴章雄
Owner SK INNOVATION CO LTD