Silicon Display Technology

Young Man Park

Kijoong Kim

Ji Ho Hur

Jin Hyeong Yu

Jaemin Kim

Jong Woo Jin

Youn Duck Nam

Taehan Go

Yeon Hwa Kim

There is provided a sensor pixel, including: a first transistor controlled depending on a mode selection voltage supplied to one end thereof; a second transistor including a gate connected to the other end of the first transistor; and a photoconductor connected to one end of the second transistor, wherein the sensor pixel operates in an optical mode when the first transistor is turned on, and the sensor pixel operates in a capacitive mode when the first transistor is turned off.

Sensor pixel operating in optical mode and capacitive mode and image sensor including the same

A fingerprint and image sensor includes a plurality of data lines, a plurality of scan lines, to which a plurality of scan signals is transferred, a plurality of reset scan lines, to which a plurality of reset scan signals is transferred, and a sensor panel, which is reset by a reset voltage, which is synchronized to a corresponding reset scan signal and is transferred, generates a pixel voltage according to light supplied during an exposure period, and includes a plurality of sensor pixels, which is synchronized to a corresponding scan signal and transfers the pixel voltage to a corresponding data line, and the exposure period may be a period from a time point, at which the corresponding reset scan signal is changed to an off-level, to a time point, at which the corresponding scan signal is changed to an on-level.

Sensor pixel, fingerprint and image sensor including the same, and driving method thereof

The present invention relates to a level shifter including: a first inverter applied with a first voltage and a second voltage of different polarities and operated depending on an input voltage to output a first inverting output signal; a second inverter applied with the first voltage and the second voltage and operated depending on the first inverting output signal to output a second inverting output signal having an opposite polarity to that of the first inverting output signal; a driver applied with a third voltage and a fourth voltage, including a first load transistor having the first inverting output signal as a gate input and a second load transistor having a fifth voltage as the gate input, and outputting an output voltage having an increased level with respect to the input voltage; and a bootstrap capacitor positioned between an output terminal of the second inverter and a gate electrode of the second load transistor to help the fifth voltage to be bootstrapped depending on the second inverting output signal, and an array apparatus including the same.

Level shifter and array apparatus

Disclosed is a fingerprint recognition sensor including: a backlight unit including a base layer positioned on one surface of a substrate and including a transparent material and a light source irradiating light to the inside of the base layer on one side of the base layer, in which light in which an incident angle on a surface facing the substrate is larger than a critical angle is transmitted toward the substrate; a cover layer spaced apart from the substrate and facing the other surface of the substrate; multiple sensor pixels defined by multiple scan lines and multiple data readout lines on the other surface of the substrate and positioned between the substrate and the cover layer; and multiple photo sensors positioned in the respective sensor pixels and sensing light transmitted on the base layer toward the substrate and total-reflected on a surface contacting a fingerprint of a user on the cover layer.

Fingerprint recognition sensor

Disclosed are a fingerprint recognition sensor including: a light source positioned while being spaced apart on one surface of the substrate and irradiating light toward the substrate; and a light direction switching layer positioned between the substrate and the light source, having a thickness-direction cross-section having a right-angled triangular shape, and including multiple protrusions constituted by a first surface in which the light irradiated from the light source is incident and refracted, a second surface contacting the one surface of the substrate, in which the refracted light is transmitted toward the substrate, and a third surface vertical to the one surface of the substrate, and a mobile display device having the same.

Growing community of inventors

Gwangju-si, South Korea

Young Man Park