Patents by Inventor Cheng-Jen Chu

Cheng-Jen Chu 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).

  • Publication number: 20080291186
    Abstract: In a liquid crystal display panel, each pixel unit includes first and second pixels, a first scan line coupled to the first pixel, and a second scan line coupled to the second pixel via an active element. During a first scan period, the first scan line, the second scan line and the active element are all activated to write a first voltage to the first and second pixels. During a second scan period, the first scan line remains activated but the second scan line and the active element are deactivated so that a second voltage is written to the first sub-pixel and the second sub-pixel is maintained at the first voltage.
    Type: Application
    Filed: May 21, 2008
    Publication date: November 27, 2008
    Applicant: CHI MEI OPTOELECTRONICS CORP.
    Inventors: Cheng Jen CHU, Lih Nian LIN, Chia Liang LIN
  • Publication number: 20080186436
    Abstract: A transflective liquid crystal display (LCD) panel includes an active device array substrate, an opposite substrate, and a liquid crystal layer in between. The active device array substrate includes scan lines, data lines, and pixel units. Each pixel unit includes an active device, a reflective pixel electrode, and a transparent pixel electrode. The active device is electrically connected to the corresponding scan line and data line. The reflective pixel electrode and the transparent pixel electrode are respectively disposed in a reflective region and a transmissive region and both electrically connected to the active device. The liquid crystal molecules in the reflective region are pre-tilted at a pretilt angle.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 7, 2008
    Applicant: CHI MEI OPTOELECTRONICS CORP.
    Inventors: Cheng-Jen Chu, Chen-Kuan Kao, Chung-Kuang Wei
  • Publication number: 20070165161
    Abstract: A sub-pixel of a liquid crystal display panel includes a first substrate, a second substrate, and a liquid crystal layer formed between the first and second substrates. A color filter layer is formed on the first substrate and includes a first photoresist formed on a transparent region and a reflective region of the sub-pixel for blocking light of wavelengths outside a first range, a second photoresist formed on the reflective region of the sub-pixel for blocking light of wavelengths outside a second range that is different from the first range, and an intermediate area formed between and free of the first and second photoresists.
    Type: Application
    Filed: January 12, 2007
    Publication date: July 19, 2007
    Applicant: CHI MEI OPTOELECTRONICS CORP.
    Inventors: Yang-Min Kao, Chao-Lien Lin, Cheng-Jen Chu
  • Patent number: 7233375
    Abstract: A liquid crystal display includes a first substrate and a second substrate, a liquid crystal layer disposed between the first and second substrate, and a backlight module disposed under the second substrate. The first substrate comprises color filters disposed in array, wherein each color filter has a chromaticity-adjusting region; a thickness of the color filters and a size of the chromaticity-adjusting region are adjustable for adjusting the chromaticity of the LCD. The second substrate comprises pixel electrodes corresponding to the color filters. Therefore, the liquid crystal display can easily adjust and perfect the chromaticity of the liquid crystal display under the restrictions of the material of the color filters, the backlight module, and the design thereof.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: June 19, 2007
    Assignee: Chi Mei Optoelectronics Corp.
    Inventors: Cheng-Jen Chu, Fu-Cheng Chen, Chien-Hung Chen
  • Patent number: 7170572
    Abstract: The invention provides a manufacturing process of transflective TFT-LCD panel (transflective TFT-LCD panel) comprising the following steps: first, form a first conductive layer on the substrate; next, define the first conductive layer to form a gate; after that, form a dielectric layer on the gate; following that, form a channel over the gate; then, form a photo-resist block; form a second conductive layer; next, define the second conductive to form a source and a drain over the gate, and to form a photo-reflective layer on the photo-resist block; after that, form a protection layer thereon; following that, define the protection layer to form a first opening on the photo-reflective layer allowing part of the drain to be exposed, and to form a second opening on the photo-reflective layer allowing part of the photo-reflective layer to be exposed; last, form a transparent electrode being electrically connected to the drain and the photo-reflective layer via the first and the second opening respectively.
    Type: Grant
    Filed: December 31, 2003
    Date of Patent: January 30, 2007
    Assignee: Chi Mei Optoelectronics Corp.
    Inventors: Wen-Jyh Sah, Chung-Kuang Wei, Cheng-Jen Chu
  • Publication number: 20060250553
    Abstract: A display device has a lower substrate, an upper substrate located above and generally parallel with the lower substrate, and a plurality of pixel units located between the lower and upper substrates. Each pixel unit of the display device includes a transmissive area and a transreflective area. The transmissive area allows light to pass through, while the transreflective area includes a light selecting membrane to selectively allow light having a first characteristic to pass through, and reflect light having a second characteristic.
    Type: Application
    Filed: May 9, 2006
    Publication date: November 9, 2006
    Inventors: Cheng-Jen Chu, Fu-Cheng Chen
  • Publication number: 20060082704
    Abstract: A liquid crystal display includes a first substrate and a second substrate, a liquid crystal layer disposed between the first and second substrate, and a backlight module disposed under the second substrate. The first substrate comprises color filters disposed in array, wherein each color filter has a chromaticity-adjusting region; a thickness of the color filters and a size of the chromaticity-adjusting region are adjustable for adjusting the chromaticity of the LCD. The second substrate comprises pixel electrodes corresponding to the color filters. Therefore, the liquid crystal display can easily adjust and perfect the chromaticity of the liquid crystal display under the restrictions of the material of the color filters, the backlight module, and the design thereof.
    Type: Application
    Filed: June 18, 2004
    Publication date: April 20, 2006
    Inventors: Cheng-Jen Chu, Fu-Cheng Chen, Chien-Hung Chen
  • Patent number: 6986983
    Abstract: A reflection-type light diffuser is fabricated on a glass substrate, which has a pixel matrix array disposed thereon. The pixel matrix array includes a plurality of adjacent pixel regions, and each of the pixel regions has a pair of side edges that are parallel and opposite. A photoresist pattern is formed on the glass substrate, and the photoresist pattern includes a plurality of wave-shaped straight protrusions formed on the side edges of each of the pixel regions and a plurality of bump structures formed on each of the pixel regions. A reflective metal layer is formed on the photoresist pattern.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: January 17, 2006
    Assignee: Chi Mei Optoelectronics Corporation
    Inventors: Chung-Kuang Wei, Cheng-Jen Chu, Chia-Liang Lin
  • Publication number: 20060007105
    Abstract: A displaying method and device. The display device includes a back light module and a display panel. The back light module emits at least M color lights. The display panel includes a plurality of pixel areas arranged in array structure, wherein each pixel area comprises N color filters, and at least one of the color filters is for passing through a plurality of primary color lights. In the displaying method, the back light module provides at least M color lights in a frame time, and a frame is displayed by arranging the M color lights and the N color filters in each pixel area, wherein M?2 and N?2. Moreover, the display panel may include an active component array substrate, a liquid crystal layer and a color filter substrate. In addition, any two adjacent pixel areas can share at least one color filter.
    Type: Application
    Filed: May 31, 2005
    Publication date: January 12, 2006
    Applicant: Chi Mei Optoelectronics Corporation
    Inventors: Fu-Cheng Chen, Chao-Lien Lin, Cheng-Jen Chu, Chung-Kuang Wei
  • Patent number: 6891591
    Abstract: A method of fabricating slant reflector with bump structure, at least comprising the steps of: providing a substrate; forming a photosensitivity material layer on the substrate; patterning the photosensitivity material layer to form m groups of pattern (m?1, m is positive integral), and each group of pattern includes a plurality of bumps with different bottom area; and jointing the bumps to form a slant surface with bump structure. The photosensitivity material layer is either orderly or randomly patterned to form m groups of patterns. The step of patterning the photosensitivity material layer includes exposing and developing. The invention utilizes one photo-mask with particular pattern to fabricate the bump structure in a simple way.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: May 10, 2005
    Assignee: Chi Mei Optoelectronics Corp.
    Inventors: Cheng-Jen Chu, Chin-Cheng Chien
  • Patent number: 6853417
    Abstract: A method of fabricating a slant reflector with a bump structure, includes the steps of: providing a substrate; forming a layer of photosensitive material on the substrate; patterning the photosensitive material to form a plurality of trapezoidal bumps that have different bottom areas and that are joined to each other at their bottoms; and smoothing the trapezoidal bumps to form a bump structure with an inclined angle. The invention utilizes a photo-mask with a particular pattern and optical diffraction to fabricate the bump structure in a simple way.
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: February 8, 2005
    Assignee: Chi Mei Optoelectronics Corp.
    Inventors: Chin-Cheng Chien, Cheng-Jen Chu
  • Publication number: 20040179156
    Abstract: The invention provides a manufacturing process of transflective TFT-LCD panel (transflective TFT-LCD panel) comprising the following steps: first, form a first conductive layer on the substrate; next, define the first conductive layer to form a gate; after that, form a dielectric layer on the gate; following that, form a channel over the gate; then, form a photo-resist block; form a second conductive layer; next, define the second conductive to form a source and a drain over the gate, and to form a photo-reflective layer on the photo-resist block; after that, form a protection layer thereon; following that, define the protection layer to form a first opening on the photo-reflective layer allowing part of the drain to be exposed, and to form a second opening on the photo-reflective layer allowing part of the photo-reflective layer to be exposed; last, form a transparent electrode being electrically connected to the drain and the photo-reflective layer via the first and the second opening respectively.
    Type: Application
    Filed: December 31, 2003
    Publication date: September 16, 2004
    Inventors: Wen-Jyh Sah, Chung-Kuang Wei, Cheng-Jen Chu
  • Publication number: 20030161940
    Abstract: A reflection-type light diffuser is fabricated on a glass substrate, which has a pixel matrix array disposed thereon. The pixel matrix array includes a plurality of adjacent pixel regions, and each of the pixel regions has a pair of side edges that are parallel and opposite. A photoresist pattern is formed on the glass substrate, and the photoresist pattern includes a plurality of wave-shaped slit structures formed on the side edges of each of the pixel regions and a plurality of bump structures formed on each of the pixel regions. A reflective metal layer is formed on the photoresist pattern.
    Type: Application
    Filed: February 21, 2003
    Publication date: August 28, 2003
    Inventors: Chung-Kuang Wei, Cheng-Jen Chu, Chia-Liang Lin
  • Publication number: 20030086035
    Abstract: A method of fabricating slant reflector with bump structure, at least comprising the steps of: providing a substrate; forming a photosensitivity material layer on the substrate; patterning the photosensitivity material layer to form m groups of pattern (m≧1, m is positive integral), and each group of pattern includes a plurality of bumps with different bottom area; and jointing the bumps to form a slant surface with bump structure. The photosensitivity material layer is either orderly or randomly patterned to form m groups of patterns. The step of patterning the photosensitivity material layer includes exposing and developing. The invention utilizes one photo-mask with particular pattern to fabricate the bump structure in a simple way.
    Type: Application
    Filed: October 17, 2002
    Publication date: May 8, 2003
    Inventors: Cheng-Jen Chu, Chin-Cheng Chien
  • Publication number: 20030043321
    Abstract: A method of fabricating slant reflector with bump structure, at least comprising the steps of: providing a substrate; forming a photosensitivity material layer on the substrate; patterning the photosensitivity material layer to form a plurality of trapeziform bumps which the trapeziform bumps have different bottom area and the bottoms of the trapeziform bumps are jointed to each other; and smoothing the trapeziform bumps to form a bump structure with an inclined angle. The invention utilizes a photo-mask with particular pattern and optical diffraction method to fabricate the bump structure in a simple way.
    Type: Application
    Filed: June 25, 2002
    Publication date: March 6, 2003
    Inventors: Chin-Cheng Chien, Cheng-Jen Chu