公开(公告)号：US20150077719A1

公开(公告)日：2015-03-19

申请号：US14445073

申请日：2014-07-29

Applicant: QISDA OPTRONICS (SUZHOU) CO., LTD. ,  QISDA CORPORATION

Inventor： Fu-Shiung Shih ,  Chi-Jen Chen ,  Fang-Chieh Lu ,  Po-Fu Wu ,  Chun-Jung Hu

IPC: G03B21/16 ,  G03B21/20

CPC classification number: G03B21/16 ,  G03B21/2086 ,  H04N9/3144

Abstract: A projector includes an apparatus casing, a light source module, a flow generating device, a sensing module, and a power module. The light source module is disposed inside the apparatus casing and includes a light-emitting part and a lampshade surrounding the light-emitting part. The flow generating device can generate an air flow for dissipating heat by the light source module. The sensing module is disposed in the apparatus casing and includes a thermo-sensitive component disposed near the lampshade and located in a flowing path of the air flow. The power module is disposed in the apparatus casing and electrically connected to the light source module and the sensing module. The power module selectively stops powering the light source module according to an electric parameter of the thermo-sensitive component. Thereby, the invention protects the projector from being overheated by use of the thermo-sensitivity of the thermo-sensitive component.

Abstract translation: 投影仪包括装置壳体，光源模块，流量发生装置，感测模块和功率模块。 光源模块设置在设备壳体内部，并且包括发光部分和围绕发光部分的灯罩。 流动产生装置可以产生用于由光源模块散热的空气流。 感测模块​​设置在装置壳体中，并且包括设置在灯罩附近并位于空气流的流动路径中的热敏部件。 电源模块设置在设备壳体中并电连接到光源模块和感测模块。 功率模块根据热敏部件的电参数选择性地停止对光源模块供电。 因此，本发明通过使用热敏部件的热敏感来保护投影机不被过热。

公开(公告)号：US10091473B1

公开(公告)日：2018-10-02

申请号：US15704009

申请日：2017-09-14

Applicant: QISDA CORPORATION

Inventor： Chi-Jen Chen ,  Chun-Hsiao Lin ,  Fang-Chieh Lu ,  Chuan-Chu Chen

IPC: H04N9/31 ,  G03B21/00

Abstract: A driver circuit includes a first voltage converter, a light source driver, a second voltage converter and a control circuit. The first voltage converter converts a first voltage to a second voltage. The light source driver is coupled to the first voltage converter, converts the second voltage to a third voltage and outputs the third voltage to a light source for providing light. The second voltage converter is coupled to the first voltage converter, converts the second voltage to a fourth voltage and outputs the fourth voltage. The control circuit is coupled to the second voltage converter to receive the fourth voltage and outputs a first control signal to control the light source driver for controlling the light source. The first voltage is lower than the second voltage, the second voltage is higher than the third voltage, and the second voltage is higher than the fourth voltage.

公开(公告)号：US20170071051A1

公开(公告)日：2017-03-09

申请号：US14846837

申请日：2015-09-07

Applicant: QISDA CORPORATION

Inventor： Chi-Jen Chen ,  Fang-Chieh Lu ,  Chuan-Chu Chen ,  Ching-Ying Tsou

IPC: H05B37/02

CPC classification number: H05B33/0827 ,  H05B33/0857

Abstract: An electronic device includes a first light module, a second light module, a primary driver, and a first secondary driver. The first light module is used to emit a first light, and the second light module is used to emit a second light. The primary driver has a first control terminal for turning on the first light module during a first duration, and a second control terminal for turning on the second light module during a second duration. The first secondary driver is used to turn on the first light module during the second duration.

Abstract translation: 电子设备包括第一光模块，第二光模块，主驱动器和第一辅助驱动器。 第一光模块用于发射第一光，第二光模块用于发射第二光。 主驱动器具有用于在第一持续时间内接通第一光模块的第一控制端子和用于在第二持续时间内接通第二光模块的第二控制端。 第一个次驱动器用于在第二个持续时间内打开第一个光模块。

公开(公告)号：US11672060B1

公开(公告)日：2023-06-06

申请号：US17709541

申请日：2022-03-31

Applicant: Qisda Corporation

Inventor： Chi-Jen Chen ,  Chih-Hsiang Wu

IPC: H05B45/345 ,  H05B45/325 ,  H05B45/20

CPC classification number: H05B45/325 ,  H05B45/20 ,  H05B45/345

Abstract: A light emit diode (LED) driving circuit, an LED driving method and a display device thereof are provided. The LED driving circuit includes: a first LED driving unit for driving first and second color LEDs of the LED circuit. The first LED driving unit includes: a duty cycle circuit generating an enable signal based on at least two color light duty cycle signals, the at least two color light duty cycle signals controlling an emitting cycle of the LED circuit; a current control circuit, generating at least two color light current adjustment signals based the at least two color light duty cycle signals and at least two color light current level signals; and a constant current circuit, for adjusting current levels of the first and the second color LEDs of the LED circuit based on the enable signal and the at least two color light current adjustment signals.

公开(公告)号：US11514851B1

公开(公告)日：2022-11-29

申请号：US17703938

申请日：2022-03-24

Applicant: QISDA CORPORATION

Inventor： Chi-Jen Chen ,  Wei-Chun Huang ,  Sung-Po Yeh

IPC: G09G3/32 ,  H04N9/31

Abstract: A display device includes a first luminescent device, a second luminescent device, a multi-color strobe decoder, a pseudo signal circuit and a single-color driving circuit. The multi-color strobe decoder is configured to generate two gate control signals. The second luminescent device and the pseudo signal circuit are coupled to the multi-color strobe decoder. The single-color driving circuit is coupled to the first luminescent device and the multi-color strobe decoder. When the single-color driving circuit provides first current for driving the first luminescent device according to the first gate control signal and/or a brightness enhancing signal, the pseudo signal circuit is configured to couple a first bias voltage to the multi-color strobe decoder according to the first gate control signal. When the second gate control signal drives the second luminescent device, the second luminescent device is configure to couple a second bias voltage to the multi-color strobe decoder.