Browsing by Author "Lu"

Now showing 1 - 6 of 6

Light-emitting device and method for making the same
(2011-02-15)
Chiu
;
Ching-Hua
;
Huang
;
Hung-Wen
;
Kuo
A light-emitting device is capable of emitting a light having a wavelength ranging from 300 to 550 nm, and includes: a substrate; a p-type semiconductor layer disposed on the substrate; an active layer disposed on the p-type semiconductor layer; a n-type semiconductor layer disposed on the active layer and having a waveguide-disposing surface; and a waveguide structure formed on the waveguide-disposing surface of the n-type semiconductor layer and having a plurality of spaced apart nanorods extending from the waveguide-disposing surface.
Method and apparatus for switching data in communication system
(2010-05-25)
Lee
;
Chen-Yi
;
Lu
;
Jr-Hau
;
Lin
A method and apparatus for switching data in communication system which comprises of mainly a conversion circuit to receive the source data possessing in a real coding dimension and covert it to converted the data possessing in a tolerable coding dimension; the judgment bits are set in the converted data to designate the data as source data or not. Later on, shifter circuit is used to shift the converted data in certain amount and generates a shifted data; meanwhile, the right side and left side of shifted data are used to start acquiring the real coding dimension to be used respectively as a first data and a second data. Finally, a comparison and selection circuit is used to compare the corresponding judgment bits in the first and the second data and to output an output data, wherein output data is source data with the above-mentioned amount of shift.
Method for promoting light emission efficiency of LED using nanorods structure
(2009-09-15)
Huang
;
Hung-Wen
;
Lu
;
Tien-Chang
;
Chiu
Method for the light emitting diode (LED) having the nanorods-like structure is provided. The LED employs the nanorods are subsequently formed in a longitudinal direction by the etching method and the PEC method. In addition, the plurality of the nanorods is arranged in an array so that provide the LED having much greater brightness and higher light emission efficiency than the conventional LED.
Optical element apparatus for two-dimensional controllable localized partition backlight module
(2010-09-14)
Tien
;
Chung-Hao
;
Lu
;
Yen-Hsing
;
Cheng
The optical element apparatus for two-dimensional controllable localized partition backlight module is disclosed. The optical element apparatus comprises of a plurality of optical units which include a plurality of point light sources, light guides and collimating sheets. The point light source is located at the center of the light guide. The light guide includes the incident surface, the bottom place connecting with the light incident surface, and the light output surface. There are micro structures on the bottom place of the light guide and the top surface of the collimating sheet.
Self-calibrating high-speed analog-to-digital converter
(2009-01-06)
Su
;
Chau-Chin
;
Lu
;
Hung-Wen
;
Chi
In a precisely self-calibrating high-speed analog to digital converter the aspect ratios of tri-state inverters are adjusted to fine-tune threshold voltage as comparators. And the multiplexers composed of tri-state inverters amplify the signal from the output of comparators. Their switches of tri-state inverters may be properly controlled to select the optimal channels and reduce unnecessary power consumption. The calibration circuitry utilizes under-sampling to calculate the duty cycles of comparators, selecting the optimal comparators and channels. By the way, the invention may avoid process variation.
Structure of high power edge emission laser diode
(2009-08-18)
Lu
;
Tien-Chang
;
Chen
;
Chyong-Hua
A structure of high power edge emission laser diode that has plural mode extension sublayers with a chirp periodic distribution is provided. The Near Field Pattern (NFP) is an L shape, and the high intensity portion is nicely overlapped with the multi quantum wells. Furthermore, the low intensity portion will extend to the n-type cladding as it can as possible. Accordingly, the optical power density on the mirror surface of the high power edge emission laser diode is lower down and the vertical divergence angle is decreased, so as to prolong its lifetime.