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Jui-Cheng
Jui-Cheng Chang, Sikou Township TW
| Patent application number | Description | Published |
|---|---|---|
| 20080296601 | Light-Emitting Diode Incorporating an Array of Light Extracting Spots - A light-emitting diode includes an optical layer formed in an array of substantially equidistant light extracting spots integrated to its multi-layered structure. The array of light extracting spots includes a distribution of juxtaposed hexagon patterns. The layer thickness of the light extracting spots is less than 800 Å. | 12-04-2008 |
Jui-Cheng Chang, Taichung City TW
| Patent application number | Description | Published |
|---|---|---|
| 20100075539 | ELECTRICAL CONNECTOR AND THE TERMINAL THEREOF - An electrical connector is disclosed, which is configured with an insulating frame for carrying a speaker while arranging terminals at two sides of the insulating frame. Each of the terminals further comprises a vertical-extending fixing part for holding securely on the insulating frame, and a movable part connected to the fixing part while parallel-extending from the same. With the aforesaid structure, as the terminals only occupy a small space available on the insulating frame comparing with those conventional connectors, the electrical connector of the invention is able to carry a speaker with larger magnet so that the aforesaid electrical connector is preferred as it can, in a way, enhance the electrical performance of the speaker. | 03-25-2010 |
Jui-Cheng Chang, Taichung Industrial Park TW
| Patent application number | Description | Published |
|---|---|---|
| 20090175488 | Diaphragm and Electrical-Acoustic Transducer having the same - An electrical-acoustic transducer includes a housing, a magnetic circuit device, a voice coil and a diaphragm. The magnetic circuit device is disposed in the housing and generates a magnetic circuit. The voice coil is disposed on the path of the magnetic circuit, and configured for generating magnetism upon receiving an electrical power. The diaphragm is made of metal, fixedly combined with the voice coil and having a scraggy cross section. When the voice coil of the electrical-acoustic transducer generates the magnetism according to the electrical power and interacts with the magnetic circuit, the diaphragm vibrates so as to generate sound. | 07-09-2009 |
| 20090304223 | Speaker, Yoke thereof and Method for Manufacturing Yoke - A speaker includes a frame, a diaphragm, a cover, a magnetic device, and a voice coil. The cover and the diaphragm are both disposed on a first side of the frame, and the cover covers the diaphragm. The magnet device is disposed on a second side of the frame. The voice coil is disposed on the magnetic loop generated by the magnetic device and integrated with the diaphragm. The magnetic device includes a yoke, a magnet, and a pole piece. The yoke includes a protrusion by bending for the magnet and the pole piece to be mounted upon. | 12-10-2009 |
Jui-Cheng Huang, Ligang Shiang TW
| Patent application number | Description | Published |
|---|---|---|
| 20090194851 | SEMICONDUCTOR DEVICE PACKAGES WITH ELECTROMAGNETIC INTERFERENCE SHIELDING - Described herein are semiconductor device packages with EMI shielding and related methods. In one embodiment, a semiconductor device package includes: (1) a substrate unit including a grounding element disposed adjacent to a periphery of the substrate unit; (2) a semiconductor device disposed adjacent to an upper surface of the substrate unit; (3) a package body disposed adjacent to the upper surface and covering the semiconductor device; and (4) an EMI shield disposed adjacent to exterior surfaces of the package body and electrically connected to a connection surface of the grounding element. A lateral surface of tile package body is substantially aligned with a lateral surface of the substrate unit, and the connection surface of the grounding element is electrically exposed adjacent to the lateral surface of the substrate unit. The grounding element corresponds to a remnant of a grounding via, and provides an electrical pathway to ground electromagnetic emissions incident upon the EMI shield. | 08-06-2009 |
Jui-Cheng Huang, Pingtung County TW
| Patent application number | Description | Published |
|---|---|---|
| 20090194852 | SEMICONDUCTOR DEVICE PACKAGES WITH ELECTROMAGNETIC INTERFERENCE SHIELDING - Described herein are semiconductor device packages with EMI shielding and related methods. In one embodiment, a semiconductor device package includes: (1) a substrate unit; (2) a grounding element disposed adjacent to a periphery of the substrate unit and extending upwardly from an upper surface of the substrate unit; (3) a semiconductor device disposed adjacent to the upper surface; (4) a package body disposed adjacent to the upper surface and covering the semiconductor device and the grounding element; and (5) an EMI shield disposed adjacent to exterior surfaces of the package body and electrically connected to a lateral surface of the grounding element. A lateral surface of the package body is substantially aligned with a lateral surface of the substrate unit. The grounding element corresponds to a remnant of a conductive bump, and provides an electrical pathway to ground electromagnetic emissions incident upon the EMI shield. | 08-06-2009 |
Jui-Cheng Huang, Hsinchu City TW
| Patent application number | Description | Published |
|---|---|---|
| 20110260746 | BUILT-IN SELF-TEST CIRCUIT FOR LIQUID CRYSTAL DISPLAY SOURCE DRIVER - A built-in self-test (BIST) circuit for a liquid crystal display (LCD) source driver includes at least one digital-to-analog converter (DAC) and at least one buffer coupled to the respective DAC, wherein the buffer is reconfigurable as a comparator. A first input signal and a second input signal are coupled to the comparator. The first input signal is a predetermined reference voltage level. The second input signal is a test offset voltage in a test range. | 10-27-2011 |
Jui-Cheng Lee, Hsinchu TW
| Patent application number | Description | Published |
|---|---|---|
| 20100103552 | Method for Distinguishing Unbalanced Disc - A method for distinguishing unbalanced disc in an optical disc reproducing/recording apparatus, comprising following steps: moving an optical pickup head to a first position of an optical disc; rotating the optical disc to a predetermined rotating speed; transferring a focus error signal produced by the optical pickup head to a focus control voltage signal; controlling the optical pickup head by the focus control voltage signal to maintain a focus light spot produced by the optical pickup head on the optical disc; and distinguishing if the optical disc is an unbalanced disc according to the focus control voltage signal. | 04-29-2010 |