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公开(公告)号：US09967938B2
公开(公告)日：2018-05-08
申请号：US14740766
申请日：2015-06-16
Applicant: Lextar Electronics Corporation
Inventor： Po-Shen Chen , Chun-Jong Chang , Chien-Nan Yeh
CPC classification number: H05B33/0851 , H02J1/00 , H02M5/297 , H05B33/0818 , Y02B20/346
Abstract: A solid state light source device and a dimming circuit are provided. The dimming circuit includes a rectifier circuit, a switch unit, and a control unit. The rectifier circuit is configured to convert an AC voltage signal to a rectified voltage signal. The switch unit is electrically connected between the rectifier circuit and a lighting module and configured to undergo switching according to a pulse width modulation signal to connect or disconnect the rectifier circuit and the lighting module. The control unit is electrically connected to the switch unit and configured to generate the pulse width modulation signal to control the switch unit.
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公开(公告)号：US20170215245A1
公开(公告)日：2017-07-27
申请号：US15362203
申请日：2016-11-28
Applicant: Lextar Electronics Corporation
Inventor： Chien-Nan Yeh , Chun-Jong Chang , Po-Shen Chen , Jhao-Cyuan Huang
IPC: H05B33/08
CPC classification number: H05B33/0857
Abstract: A light-emitting device includes a dimmer, a rectifier, a first light-emitting module, a first controller, a second light-emitting module and a second controller. The dimmer is coupled to an alternating current for modulating the alternating current into an alternating signal. The rectifier couples the dimmer to the alternating current for rectifying the alternating signal into a direct current signal. The first light-emitting module is for emitting a first light with a first color temperature. The first controller is coupled to the first light-emitting module for controlling the first light-emitting module to emit the first light. The second light-emitting module is for emitting a second light with a second color temperature different from the first color temperature. The second controller coupled to the second light-emitting module for controlling the second light-emitting module to emit the second light.
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公开(公告)号：US20170202066A1
公开(公告)日：2017-07-13
申请号：US15339961
申请日：2016-11-01
Applicant: Lextar Electronics Corporation
Inventor： Chien-Nan Yeh , Chun-Jong Chang , Po-Shen Chen , Jhao-Cyuan Huang , Tzu-Hao Liu
CPC classification number: H05B33/0845 , F21V23/04 , F21Y2115/10 , H05B33/0815
Abstract: A dimming system includes a signal generating circuit, a first dimming circuit and a second dimming circuit. The signal generating circuit generates the driving signal according to the input signal, and switches the driving signal between multiple states according to the switch signal. The first dimming circuit generates the dimming signal to adjust the luminance of the LED device according to the driving signal. When the driving signal is switched from the first states to the second states, the dimming signal is changed by the first dimming circuit so that the luminance of the LED device is adjusted from the first luminance to the second luminance. The second dimming circuit adjusts the input signal according to the control signal so that the dimming signal is adjusted and the luminance of the LED device is between the first luminance and minimum luminance, or between the second luminance and minimum luminance.
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公开(公告)号：US11610875B2
公开(公告)日：2023-03-21
申请号：US17100933
申请日：2020-11-22
Applicant: Lextar Electronics Corporation
Inventor： Chih-Hao Lin , Jian-Chin Liang , Chien-Nan Yeh , Shih-Lun Lai , Jo-Hsiang Chen
IPC: H01L29/205 , H01L33/00 , H01L25/16 , H01L33/62 , H01L33/60
Abstract: Disclosed is a light-emitting array structure having a substrate, a plurality of light-emitting pixel units, a plurality of first signal wires, a plurality of second signal wires, and an encapsulating layer. The light-emitting pixel units are arranged in array on the substrate. Each light-emitting pixel unit includes a driving chip, a first flat layer, a first redistribution layer, a second flat layer, a second redistribution layer, and a light-emitting diode. Each first signal wire is electrically connected to a corresponding one of the first redistribution layers and extends in a first direction. The second signal wires extend in a level different from the first signal wires. Each second signal wire is electrically connected to a corresponding one of the second redistribution layers and extends in a second direction different from the first direction. The encapsulating layer covers the light-emitting pixel units, the first and second signal wires, and the substrate.
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公开(公告)号：US11373589B1
公开(公告)日：2022-06-28
申请号：US17444671
申请日：2021-08-09
Applicant: Lextar Electronics Corporation
Inventor： Chien-Nan Yeh , Chih-Hao Lin , Cheng-Te Lin , Ku-Cheng Lin
IPC: G09G3/32
Abstract: A display includes first and second pixel devices. The first pixel device includes a first control circuit and a first light emitting circuit. The first control circuit generates a first light emitting signal according to a first clock signal and a data signal during a first period. The first light emitting circuit emits light according to the first light emitting signal during second and third periods. The second pixel device includes a second control circuit and a second light emitting circuit. The second control circuit generates a second light emitting signal according to a second clock signal and the data signal during the second period. The second light emitting circuit is coupled to the second control circuit and emits light according to the second light emitting signal during the third period. The first period to the third period are arranged continuously in order.
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Patent Agency Ranking
公开(公告)号：US11132936B2
公开(公告)日：2021-09-28
申请号：US16672510
申请日：2019-11-03
Applicant: Lextar Electronics Corporation
Inventor： Chien-Nan Yeh , Jian-Chin Liang
Abstract: The present disclosure relates to a pixel circuit including a light emitting unit, a processing circuit and a driving circuit. The processing circuit is configured to receive a frame display signal, and is configured to calculate the frame display signal to generate a driving duty cycle corresponding to a driving period according to a driving current value. The driving circuit is electrically connected to the processing circuit and the light emitting unit, and is configured to drive the light emitting unit during the driving period according to the driving duty cycle, the driving current value and a driving frequency.
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公开(公告)号：US11489089B2
公开(公告)日：2022-11-01
申请号：US16907143
申请日：2020-06-19
Applicant: Lextar Electronics Corporation
Inventor： Shiou-Yi Kuo , Jian-Chin Liang , Chien-Nan Yeh
Abstract: A light emitting device includes a first light emitting cell and a second light emitting cell. Each light emitting cell includes a first semiconductor layer, a second semiconductor layer, and an active layer between the first and second semiconductor layers. The second semiconductor layer of the second light emitting cell has an exposed surface. A transparent bonding layer is located between the first and second light emitting cells. A hole is formed on the first and second light emitting cells and the transparent bonding layer. A first route metal is located on a sidewall of the hole and electrically coupled to the second semiconductor layer of the first light emitting cell and the first semiconductor layer of the second light emitting cell. The active layer of the second light emitting cell has an area greater than the active layer of the first light emitting cell.
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公开(公告)号：US09717127B1
公开(公告)日：2017-07-25
申请号：US15339961
申请日：2016-11-01
Applicant: Lextar Electronics Corporation
Inventor： Chien-Nan Yeh , Chun-Jong Chang , Po-Shen Chen , Jhao-Cyuan Huang , Tzu-Hao Liu
IPC: H05B33/08 , F21V23/04 , F21Y115/10
CPC classification number: H05B33/0845 , F21V23/04 , F21Y2115/10 , H05B33/0815
Abstract: A dimming system includes a signal generating circuit, a first dimming circuit and a second dimming circuit. The signal generating circuit generates the driving signal according to the input signal, and switches the driving signal between multiple states according to the switch signal. The first dimming circuit generates the dimming signal to adjust the luminance of the LED device according to the driving signal. When the driving signal is switched from the first states to the second states, the dimming signal is changed by the first dimming circuit so that the luminance of the LED device is adjusted from the first luminance to the second luminance. The second dimming circuit adjusts the input signal according to the control signal so that the dimming signal is adjusted and the luminance of the LED device is between the first luminance and minimum luminance, or between the second luminance and minimum luminance.
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公开(公告)号：US20150173136A1
公开(公告)日：2015-06-18
申请号：US14248274
申请日：2014-04-08
Applicant: LEXTAR ELECTRONICS CORPORATION
Inventor： Chien-Nan Yeh
CPC classification number: H05B37/0281 , H05B33/0815 , Y02B20/42
Abstract: A control device including a first switch, a control unit and a second switch is provided. When the first switch is turned on, a power signal generated by a power supply is transmitted to a lighting load via the first switch. The brightness of the lighting load is gradually increased or reduced as time increases. When the first switch is turned on, the control unit executes a countdown according to a time value. Upon finishing the countdown, the control unit generates a trigger signal and simultaneously the brightness of the lighting load is at a set value. When receiving the trigger signal, the second switch stops transmitting the power signal from the first switch to the lighting load at first and then transmits the power signal from the first switch to the lighting load such that the brightness of the lighting load keeps at the set value.
Abstract translation: 提供一种包括第一开关，控制单元和第二开关的控制装置。 当第一开关接通时，由电源产生的电力信号通过第一开关传送到照明负载。 随着时间的推移，照明负载的亮度逐渐增加或减小。 当第一开关接通时，控制单元根据时间值执行倒计时。 完成倒计时后，控制单元生成触发信号，同时亮度负载的亮度处于设定值。 当接收到触发信号时，第二开关首先停止从第一开关将功率信号传输到照明负载，然后将功率信号从第一开关发送到照明负载，使得照明负载的亮度保持在该组 值。
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公开(公告)号：US20140103824A1
公开(公告)日：2014-04-17
申请号：US13901923
申请日：2013-05-24
Applicant: LEXTAR ELECTRONICS CORPORATION
Inventor： Chun-Kuang Chen , Chien-Nan Yeh
IPC: H05B33/08
CPC classification number: H05B33/0821 , F21K9/20 , F21V23/005 , F21V23/006 , F21Y2101/00 , F21Y2115/10 , H05B33/0803
Abstract: A lamp includes a lamp tube, a carrier, a light bar circuit board, a driver circuit board, a plurality of first luminous elements and a parallel-connected type luminous unit. The carrier is accommodated in the lamp tube. The light bar circuit board is disposed on the carrier. The driver circuit board is disposed on the carrier and adjoins the light bar circuit board. The first luminous elements are disposed on the light bar circuit board. The parallel-connected type luminous unit is disposed on the driver circuit board, and includes a plurality of luminous element groups connected in parallel.
Abstract translation: 灯包括灯管，载体，灯条电路板，驱动电路板，多个第一发光元件和并联型发光单元。 载体容纳在灯管中。 灯条电路板设置在载体上。 驱动器电路板设置在载体上并与光棒电路板相邻。 第一发光元件设置在灯条电路板上。 并联连接型发光单元设置在驱动电路板上，并且包括并联连接的多个发光元件组。
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