公开(公告)号：US20170321872A1

公开(公告)日：2017-11-09

申请号：US15148236

申请日：2016-05-06

Applicant: Hung LIN

Inventor： Hung LIN

IPC: F21V23/00 ,  F21V23/02 ,  H05K1/02 ,  H05K1/18

CPC classification number: F21V23/001 ,  F21V23/005 ,  F21V23/02 ,  F21Y2103/003 ,  F21Y2105/001 ,  H01L33/62 ,  H05B33/0803 ,  H05K1/0296 ,  H05K1/181 ,  H05K2201/10106

Abstract: A uniform luminance light-emitting diode (LED) circuit board includes a first primary trace and a second primary trace mounted on a substrate along a direction and are spaced apart, multiple LED strings mounted on the substrate along the direction and parallelly connected between the first primary trace and the second primary trace, a first power trace and a second power trace respectively connected to the first primary trace and the second primary trace, and a first auxiliary trace with two ends respectively connected to the second primary trace and the second power trace. By adjusting trace widths of the first primary trace and the second primary trace to limit current passing through each LED string and using the first auxiliary trace to provide an additional current path, identical current flowing through all the LED strings results in uniform luminance of the LED strings.

公开(公告)号：US20110253427A1

公开(公告)日：2011-10-20

申请号：US13172065

申请日：2011-06-29

Applicant: Hung LIN

Inventor： Hung LIN

IPC: H05K1/11 ,  H05K1/02

CPC classification number: H05B33/0827

Abstract: A circuit board of a parallel light-emitting circuit of parallel LED light-emitting device has an electrical insulation board, two wire patterns and at least two power wires. The two wire patterns are oppositely formed on the electrical insulation board. Each wire pattern is connected to the corresponding power wire and has a matrix main loop having closed loops and a plurality of sub-wires formed inside the corresponding closed loop. A plurality of LEDs are respectively mounted on the corresponding closed loop and electrically connect with the two sub-wires of the two wire patterns. When a DC power supply is inputted to the power wires, a current of the DC power supply uniformly flows through the matrix main loop and the sub-wires, so that the LEDs electrically connected to the corresponding sub-wires receive approximately equal current to further emit light with uniform brightness.

Abstract translation: 平行LED发光装置的并联发光电路的电路板具有电绝缘板，两线图案和至少两根电源线。 在电绝缘板上相反地形成两个线图形。 每个导线图案连接到相应的电源线，并且具有闭合环的矩阵主环和形成在相应闭环内的多个子线。 多个LED分别安装在相应的闭环上并与两个线图案的两个子线电连接。 当直流电源被输入到电源线时，直流电源的电流均匀地流过矩阵主回路和副线，使得与相应子线电连接的LED接近大致相等的电流 以均匀的亮度发光。