Patents by Inventor Wen Cheng

Wen Cheng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Bandgap reference circuits
    Publication number: 20050237045
    Abstract: A bandgap reference circuit. In the bandgap reference circuit, a current generator includes a first bipolar junction transistor (BJT) and generates a first positive temperature coefficient current thereby producing a negative temperature coefficient voltage between a base terminal and an emitter terminal of the first bipolar junction transistor. A single-end gain amplifier includes a positive input terminal coupled to the emitter terminal of first the bipolar junction transistor. A first resistor is coupled between the output terminal of the single-end gain amplifier and an output terminal of the bandgap reference circuit to generate a first current. A current-to-voltage converter is coupled to the first resistor to convert the first positive temperature coefficient current and the first current to a bandgap voltage.
    Type: Application
    Filed: December 21, 2004
    Publication date: October 27, 2005
    Inventors: Chao-Chi Lee, Wen-Cheng Yen
  • Apparatus for removing developing solution
    Publication number: 20050238350
    Abstract: An apparatus (3) for removing developing solution from a substrate (30) includes a working table (36) for placing the substrate, a supporting frame (33) positioned on the working table, a gas dispensing nozzle (31) mounted on the supporting frame, and a water dispensing nozzle (32) mounted on the supporting frame. The apparatus can remove the residual developing solution from the substrate and needs not to lift the substrate. The substrate is safely processed and the working time is improved.
    Type: Application
    Filed: April 20, 2005
    Publication date: October 27, 2005
    Inventors: Wen-Cheng Hsu, Ching-Lung Wang, Yu-Ying Chan, Tseng-Kuei Tseng
  • Coating apparatus with substrate cleaner
    Publication number: 20050235910
    Abstract: A coating apparatus (20) for forming a photoresist film on a substrate (21) includes a flat table (30), a nozzle unit (40), and a particle cleaning unit (50). The flat table is used for supporting the substrate. The nozzle unit is used for dispensing photoresist material on a top surface of the substrate. The particle cleaning unit is used for removing particles from the top surface before the photoresist material is coated thereon. The coating apparatus can timely clean the substrate before coating. The coating performance is improved, and the nozzle unit is protected from being scratched or damaged.
    Type: Application
    Filed: April 20, 2005
    Publication date: October 27, 2005
    Inventors: Chen Teng, Ching-Lung Wang, Wen-Cheng Hsu, Yu-Ying Chan, Tseng-Kuei Tseng, Ho-Li Hsieh
  • Mesh structure of tetraode field-emission display and method of fabricating the same
    Publication number: 20050231088
    Abstract: A mesh structure of tetraode field-emission display and a method of fabricating the same are disclosed. The mesh has a gate layer, an insulation layer and a converging electrode layer. The converging electrode layer is fabricated from a metal conductive plate adhered to one side of a glass plate, and a conductive layer is formed on the other side of the glass plate. The glass plate serves as the insulation layer, and the conductive layer serves as the gate layer. The converging electrode layer, the insulation layer and the gate layer are perforated with at least one aperture to establish a path of electron beam between an anode and a cathode of the tetraode field-emission display.
    Type: Application
    Filed: April 14, 2004
    Publication date: October 20, 2005
    Inventors: Kuo-Rong Chen, Te-Fong Chan, Kuei-Wen Cheng
  • Mesh structure of tetraode field-emission display and method of fabricating the same
    Publication number: 20050231089
    Abstract: A mesh structure of tetraode field-emission display and a method of fabricating the same are disclosed. The mesh has a gate layer, an insulation layer, a converging electrode layer and a glass plate. The converging electrode layer fabricated from a metal conductive plate is adhered on the glass plate. The insulation layer is formed on the converging electrode layer and a conductive layer is formed on the insulation layer. The glass plate serves as a spacer, and the conductive layer serves as the gate layer. The spacing glass plate, the converging electrode layer, the insulation layer and the gate layer are perforated with at least one aperture to establish a path of electron beam between an anode and a cathode of the tetraode field-emission display.
    Type: Application
    Filed: April 14, 2004
    Publication date: October 20, 2005
    Inventors: Kuo-Rong Chen, Te-Fong Chan, Kuei-Wen Cheng
  • Tetraode field-emission display and method of fabricating the same
    Publication number: 20050231090
    Abstract: A tetraode field-emission display and a method of fabricating the same are disclosed. A mesh is disposed between an anode plate and a cathode plate. The mesh has a gate layer and a converging electrode layer separated by an insulation layer to form a sandwich structure. The mesh has a plurality of apertures in correspondence with each set of anode and cathode. The converging electrode layer is facing the anode plate, such that the divergent range of an electron beam emitted by an electron emission source can be restricted. Thereby, the electron beam can impinge the corresponding anode more precisely.
    Type: Application
    Filed: April 20, 2004
    Publication date: October 20, 2005
    Inventors: Kuo-Rong Chen, Te-Fong Chan, Jin-Shou Fang, Chih-Che Kuo, Kuei-Wen Cheng
  • Apparatus for supporting substrate
    Publication number: 20050233076
    Abstract: An apparatus (20) for supporting a substrate (S2) includes a number of slats (28), a number of connecting blocks (24) separately positioned on the slats, and a number of soft sleeves (22) connected with the connecting blocks, respectively. Because top surfaces of the soft sleeves are shaped as annular, the force applied between the substrate and the soft sleeves is distributed, and is reduced at each contact point. The surface of the substrate is hardly if at all deformed by the soft sleeves, thereby reducing the risk of or even altogether preventing the formation of undulations. The quality of the pattern to be processed is improved.
    Type: Application
    Filed: April 20, 2005
    Publication date: October 20, 2005
    Inventors: Shao-Ming Hsu, Ching-Lung Wang, Wen-Cheng Hsu, Yu-Ying Chan, Tseng-Kuei Tseng, Ho-Li Hsieh, Chen-Kun Teng
  • Tetraode field-emission display and method of fabricating the same
    Publication number: 20050231098
    Abstract: A tetraode field-emission display and a method of fabricating the same are disclosed. A mesh is disposed between an anode plate and a cathode plate. The mesh has a gate layer and a converging electrode layer separated by an insulation layer to form a sandwich structure. The mesh has a plurality of apertures in correspondence with each set of anode and cathode. A glass plate is placed between the mesh and the anode to serve as a spacer. The converging electrode layer is facing the anode plate, such that the divergent range of an electron beam emitted by an electron emission source can be restricted. Thereby, the electron beam can impinge the corresponding anode more precisely.
    Type: Application
    Filed: April 20, 2004
    Publication date: October 20, 2005
    Inventors: Kuo-Rong Chen, Jin-Shou Fang, Kuei-Wen Cheng
  • Method for fabricating mesh of tetraode field-emission display
    Publication number: 20050233670
    Abstract: A method for fabricating a mesh structure of a tetraode field-emission display is disclosed. The mesh has a tri-layer structure including a gate layer, an insulation layer and a converging electrode layer. The converging electrode layer is selected from a metal conductive plate with a plurality of aperture, the insulation layer is coated on the converging electrode layer, and a gate is formed on the insulation layer.
    Type: Application
    Filed: April 20, 2004
    Publication date: October 20, 2005
    Inventors: Shie-Heng Lee, Kuei-Wen Cheng
  • Combining device for tightly fixing screen to wall
    Publication number: 20050224197
    Abstract: A combining device for tightly fixing a screen to a wall is disclosed. The screen is suspended from a rod body so that it is expanded by the rod body. Screen shields an area defined by the rod body. The combining device comprises a female combining unit and a male combining unit. The female combining unit has a folding line. A first part of the male combining unit is a turning portion. A second part of the female combining unit is adhered to the screen. A sticky strip is adhered on the male combining unit. The male combining unit adhered to a wall by using an adhering sheet. A width of the second part is approximately equal to the total widths of the male combining unit and the adhering sheet. The sticky strip of the turning portion can be combined to one surface of the female combining unit as the turning portion is turned from the folding line.
    Type: Application
    Filed: April 12, 2004
    Publication date: October 13, 2005
    Inventors: Wen Cheng, Ching-Yi Wang
  • KEYBOARD HAVING KEY FLOATING DEVICE
    Publication number: 20050226669
    Abstract: A keyboard includes a housing having a number of passages formed by cylindrical members, a number of keys each having a shank slidably engaged in the passages of the housing, and an electromagnetic floating force generating device having a number of coils arranged to generate electromagnetic floating force and to float the keys relative to the housing. A number of magnets may be attached onto the keys and acted with the coils, to allow the keys to be floated by the electromagnetic floating force generated by the coils or the magnets. One or more fan devices may be disposed in the housing to circulate air through the keys.
    Type: Application
    Filed: April 13, 2004
    Publication date: October 13, 2005
    Inventor: Wen Cheng
  • Method and apparatus for reverberation processing
    Publication number: 20050213772
    Abstract: A method and an apparatus for reverberation processing, mainly utilizing a fact that a human's hearing can identify the audio quality in 50 ms, and combines a high quality filter module and a low quality filter module. The high quality filter module will produce audio signals with high quality reverberation effects in a finite period of time from the beginning; after that the reverberation effects are provided by the low quality filter module. Therefore, reverberation effects with long duration, simpler hardware and superior quality can be reached.
    Type: Application
    Filed: March 25, 2004
    Publication date: September 29, 2005
    Inventor: Yiou-Wen Cheng
  • Printer system with halftone monochromatic process and method thereof
    Publication number: 20050213157
    Abstract: A printer system with halftone monochromatic process and method thereof. An image printed by the printer system consists of a two-dimensional array of pixels in rows. The printer system includes an update device, a threshold device and an error determinator. The update device has a first input terminal to receive a pixel to be printed, a second input terminal to receive a feedback error signal for generating a corrected pixel. The threshold device is connected to the update device so as to generate a print signal as a value of the corrected pixel exceeds a predetermined value, or conversely a non-print signal. The error determinator generates the feedback error signal in accordance with the signal generated by the threshold device, the corrected signal and previously printed pixels.
    Type: Application
    Filed: March 11, 2005
    Publication date: September 29, 2005
    Applicant: Sunplus Technology CO., Ltd.
    Inventor: Wen-Cheng Ho
  • Method and system for regulating power in portable audio/video playback device
    Publication number: 20050213929
    Abstract: A method and a system for regulating power in a portable audio/video playback device enabling the portable audio/video playback device to completely play an audio/video multimedia file or data without sufficient power or external power. A processing unit is employed for detecting a remaining power of the portable audio/video playback device and for computing an average power consumption rate and a remaining playback time of the audio/video multimedia file or data to thereby appropriately reduce an output level of the video or audio output signals. Accordingly, power consumption of the portable audio/video playback device is minimized so that a complete playback of the audio/video multimedia file or data can be performed by the portable audio/video playback device before the power is exhausted.
    Type: Application
    Filed: March 29, 2004
    Publication date: September 29, 2005
    Inventor: Yiou-Wen Cheng
  • Apparatus for generating stereo sound and method for the same
    Publication number: 20050213770
    Abstract: An apparatus and method for generating a stereo sound has a direct sound positioner, a reverberation positioner, multiple sound integrators, a left reverberation generator and a right reverberation generator. It uses the direct sound positioner and reverberation positioner to produce the directional effect of sounds and uses the left and right reverberation generators produce the spatial effect of the sounds. Further, it adjusts the ratio of the directional sounds and the reverberation via the integrators to achieve the required sound effects.
    Type: Application
    Filed: March 29, 2004
    Publication date: September 29, 2005
    Inventors: Yiou-Wen Cheng, Mei-Chun Ku
  • Shock-absorbing golf club head
    Publication number: 20050209023
    Abstract: A shock-absorbing golf club head has a head body, a faceplate and a shock-absorbing core. The head body has a crown, a sole, a toe, a shank, a rear, an open front, a core cavity and an air outlet. The open front has an inner shoulder. The core cavity is defined in the head body and communicates with the open front. The air outlet is defined through the head body, and communicates with the core cavity. The faceplate is mounted securely on the inner shoulder of the open front of the head body. The shock-absorbing core is mounted in the core cavity. The air in the core cavity is discharged to the ambient atmosphere through the air outlet when a foaming agent serving as the shock-absorbing core foams inside the core cavity.
    Type: Application
    Filed: February 1, 2005
    Publication date: September 22, 2005
    Inventor: Wen-Cheng Tseng
  • Keyboard having lighting device
    Publication number: 20050204899
    Abstract: A keyboard includes a housing having a number of cavities to slidably receive shanks of a number of key pads, and a light device for lighting the key pads. The lighting device includes a number of light members engaged in the shanks of the key pads, the housing includes two conductive projections extended into each of the cavities to selectively engage with terminals of the light members, and to energize the light members when the key pads are depressed by the users. A spring biasing device may bias the key pad to disengage the terminals of the light members from the conductive projections.
    Type: Application
    Filed: March 17, 2004
    Publication date: September 22, 2005
    Inventors: Wen Cheng, Yung Pan
  • [LASER ANNEALING APPARATUS AND LASER ANNEALING PROCESS]
    Publication number: 20050199597
    Abstract: A laser annealing apparatus is disclosed, which is adapted for a laser annealing process. The laser annealing apparatus comprises a laser-generating module, a resistance-measuring module, and a host circuit module, wherein the laser-generating module provides a laser beam to recrystallize an amorphous silicon thin film to form a polysilicon thin film. The resistance-measuring module is adapted for measuring the sheet resistance of the polysilicon thin film. Besides, the host circuit module is electrically coupled to and between the laser-generating module and the resistance-measuring module. The host circuit module outputs a feedback signal to the laser-generating module in accordance with the sheet resistance value. Then, the energy density of the laser beam is optimized. The laser annealing apparatus can improve the quality of the thin film, and increase the yield rate of the laser annealing process.
    Type: Application
    Filed: April 8, 2004
    Publication date: September 15, 2005
    Inventors: I-Chang Tsao, Huan-Chao Wu, Wu-Hsiung Lin, Wen-Cheng Lin
  • Shaving head assembly for a lint shaver
    Patent number: 6941662
    Abstract: A shaving head assembly for a lint shaver includes a transmission shaft rotatably received inside the casing and having a V-shaped cutout defined in a distal end of the transmission shaft. The blade assembly has a blade seat with a V-shaped extension extending from a bottom of the blade seat to be securely received in the V-shaped cutout yet movable relative to the transmission shaft so that the blade seat is able to move upward and downward relative to the transmission shaft. A rotor is fixedly connected to a free end of the transmission shaft and rotatably received in the casing.
    Type: Grant
    Filed: November 1, 2004
    Date of Patent: September 13, 2005
    Inventor: Wen-Cheng Chen
  • FIELD EMISSION DISPLAY WITH REFLECTION LAYER
    Publication number: 20050194886
    Abstract: A field emission display with reflection layer has an improved insulating supporting device. The major feature is to place a reflection layer on the insulating supporting device. From the special structure, the insulating supporting device can enhance the emission efficiency of the phosphors powder rather than the primary function of the insulating support. The field emission display with reflection layer has an anode structure, a cathode structure and the supporting device.
    Type: Application
    Filed: March 5, 2004
    Publication date: September 8, 2005
    Inventors: Chi Hsiao, Jin-Shou Fang, Kuei-Wen Cheng