公开(公告)号：US20220173268A1

公开(公告)日：2022-06-02

申请号：US17106193

申请日：2020-11-30

Applicant: Yen-Chun TSENG ,  Tzu-Yang LIN ,  Yi-Chun SHIH

Inventor： Yen-Chun TSENG ,  Tzu-Yang LIN ,  Yi-Chun SHIH

IPC: H01L33/00 ,  H01L33/38 ,  H01L33/04

Abstract: The present invention discloses a micro LED structure including a first semiconductor layer, a first electrode, a second electrode, and an active layer. The first semiconductor layer has two opposite sides defined as a first surface and a second surface. The first semiconductor layer has a doped region located therein and exposed on the first surface. A pn junction is formed between the doped region and the first semiconductor layer. The first electrode and the second electrode, located on the first surface, are capable of electrically connecting to the first semiconductor layer and the doped region respectively. The active layer is adjacent to the second surface. Wherein the first semiconductor layer is a first doping type, and the doped region is a second doping type different from the first doping type, and the first semiconductor layer and the pn junction are located at identical side of the active layer.

公开(公告)号：US08513585B2

公开(公告)日：2013-08-20

申请号：US12838755

申请日：2010-07-19

Applicant: Paul C. P. Chao ,  Tzu-Yang Lin ,  Wei-Dar Chen

Inventor： Paul C. P. Chao ,  Tzu-Yang Lin ,  Wei-Dar Chen

IPC: G01B11/14 ,  G01C3/08 ,  G01J1/42

CPC classification number: G01B11/002 ,  G01S17/46 ,  G06F3/0304 ,  H03K17/943 ,  H03K2217/94108 ,  H03K2217/94111 ,  H03K2217/94112

Abstract: The present invention relates an optical three-dimensional coordinate sensor system and method thereof. A plurality of light-emitting modules produce a plurality of light signals, and then a plurality of reflected light signals reflected by an object are received by a plurality of photodetectors. After receiving the reflected light signals, the photodetectors generate a plurality of photocurrents. A plurality of active pixel circuits receive the photocurrents and transform the photocurrents to a plurality of reflective optical voltages. A plurality of differential amplifier circuits (DAC) compare the reflective optical voltages and the background voltages, and then output a plurality of DAC output voltages of the reflected light signals. Afterward, a processing module detects the DAC output voltages and uses an algorithm to calculate the top three of the DAC output voltages to determine the three-dimensional coordinate of the object.

Abstract translation: 本发明涉及光学三维坐标传感器系统及其方法。 多个发光模块产生多个光信号，然后由多个光电检测器接收被物体反射的多个反射光信号。 在接收到反射光信号之后，光电检测器产生多个光电流。 多个有源像素电路接收光电流并将光电流转换成多个反射光电压。 多个差分放大器电路（DAC）比较反射光电压和背景电压，然后输出反射光信号的多个DAC输出电压。 之后，处理模块检测DAC输出电压，并使用算法来计算前三个DAC输出电压，以确定对象的三维坐标。

公开(公告)号：US20120013486A1

公开(公告)日：2012-01-19

申请号：US12838755

申请日：2010-07-19

Applicant: Paul C.P. Chao ,  Tzu-Yang Lin ,  Wei-Dar Chen

Inventor： Paul C.P. Chao ,  Tzu-Yang Lin ,  Wei-Dar Chen

IPC: H03M1/22

CPC classification number: G01B11/002 ,  G01S17/46 ,  G06F3/0304 ,  H03K17/943 ,  H03K2217/94108 ,  H03K2217/94111 ,  H03K2217/94112

Abstract: The present invention relates an optical three-dimensional coordinate sensor system and method thereof. A plurality of light-emitting modules produce a plurality of light signals, and then a plurality of reflected light signals reflected by an object are received by a plurality of photodetectors. After receiving the reflected light signals, the photodetectors generate a plurality of photocurrents. A plurality of active pixel circuits receive the photocurrents and transform the photocurrents to a plurality of reflective optical voltages. A plurality of differential amplifier circuits (DAC) compare the reflective optical voltages and the background voltages, and then output a plurality of DAC output voltages of the reflected light signals. Afterward, a processing module detects the DAC output voltages and uses an algorithm to calculate the top three of the DAC output voltages to determine the three-dimensional coordinate of the object.

Abstract translation: 本发明涉及光学三维坐标传感器系统及其方法。 多个发光模块产生多个光信号，然后由多个光电检测器接收被物体反射的多个反射光信号。 在接收到反射光信号之后，光电检测器产生多个光电流。 多个有源像素电路接收光电流并将光电流转换成多个反射光电压。 多个差分放大器电路（DAC）比较反射光电压和背景电压，然后输出反射光信号的多个DAC输出电压。 之后，处理模块检测DAC输出电压，并使用算法来计算前三个DAC输出电压，以确定对象的三维坐标。