Patents by Inventor Chih-Chang Lai

Chih-Chang Lai 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: 20100225629
    Abstract: A photo sensing module is provided on a first substrate and includes a photo sensing device and a protection wiring. A gap exists between the photo sensing module and an external circuit, and the photo sensing device is provided on the first substrate. The protection wiring is electrically-conductive and located between the external circuit and at least a portion of the photo sensing device.
    Type: Application
    Filed: March 4, 2010
    Publication date: September 9, 2010
    Inventors: Wen-Chun WANG, Po-Hsien Wang, Chih-Chang Lai, Hsi-Rong Han
  • Publication number: 20100195188
    Abstract: An electrophoretic display panel includes a transparent substrate, a first electrode, a transparent wall, a plurality of display media, and a plurality of reflective elements. The first electrode is disposed on the transparent substrate. The transparent wall is disposed on the first electrode to define a plurality of micro-cell structures on the first electrode. Each of the micro-cell structures is respectively filled with the display media, and each of the display media has a plurality of colored particles. Each of the reflective elements is disposed on a projection direction of the transparent wall on the transparent substrate. An electrophoretic display apparatus is also provided. The electrophoretic display panel and the electrophoretic display apparatus can be used on condition of various illuminations and have advantages of maintaining display brightness and ensuring low power consumption.
    Type: Application
    Filed: February 3, 2010
    Publication date: August 5, 2010
    Applicant: WINTEK CORPORATION
    Inventors: Chun-Ming Huang, Po-Hsien Wang, Chih-Chang Lai
  • Publication number: 20100182278
    Abstract: A resistive touch control device and driving methods and a driving controller thereof are provided to switch operation modes of a touch panel. Depending on the user's requirement, the touch panel can be operated in multi-touch mode or only in an analog mode with high resolution. In other words, the touch control device can be operated in a digital mode, the analog mode, or a hybrid mode including both of the digital and the analog modes.
    Type: Application
    Filed: January 22, 2010
    Publication date: July 22, 2010
    Applicant: WINTEK CORPORATION
    Inventors: Jian-Feng Li, Wen-Chun Wang, Chih-Chang Lai, Kuo-Chang Su, Gwo-Sen Lin, Chih-Hao Wang
  • Patent number: 7740391
    Abstract: A backlight module has a light guide plate and a plurality of light sources. The light guide plate includes a light exit surface, a plurality of light entrance surfaces round the light exit surface, and a plurality of light guide portions disposed on the bottom surface opposite to the light exit surface. The light guide portions corresponding to the same imaginary circle center constitute a concentric arc-shaped light guide portion set. The imaginary circle center of each light guide portion set is located at the outer side of the light entrance surfaces. Light rays projected to one of the light entrance surfaces from the imaginary circle center of each light guide portion set are guided to a light exit surface by the light guide portion set. The wavelength of the light ray projected by each light source is not equal to that of the light projected by another light source.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: June 22, 2010
    Assignee: Wintek Corporation
    Inventors: Chih-Chang Lai, Chung-Yang Fang
  • Publication number: 20100141595
    Abstract: A touch display panel including scan lines, data lines, pixel units electrically connecting the scan lines and the data lines, at least a sensing-signal line locating between the pixel units, and at least a touch-sensing device is provided. Each touch-sensing element includes a set of sensing pads and a signal transmission element. The set of the sensing pads includes a first pad and a second pad separated from each other. The first pad and the second pad are respectively electrically connected to the scan line and the sensing-signal line. The signal transmission element is located above the set of the sensing pads. When a position where the touch-sensing element is disposed is pressed, the signal transmission element directly contacts the first pad and the second pad. When the position where the touch-sensing element is disposed is unpressed, the first pad and the second pad are electrically insulated.
    Type: Application
    Filed: December 2, 2009
    Publication date: June 10, 2010
    Applicant: WINTEK CORPORATION
    Inventors: Chih-Chang Lai, Ting-Yu Chang, Ching-Fu Hsu
  • Publication number: 20100002010
    Abstract: A color correction method is provided. Grey values of three primary colors of an image data are transformed into initial characteristic values in a color space. Three sets of characteristic values of a to-be-corrected apparatus when the apparatus displays the primary colors respectively are measured. The characteristic values of the image data are transformed into a set of adjusted brightness values of the primary colors according to the characteristic values and a color space transformation equation. Gamma curves of the apparatus when displaying the primary colors are measured and modified to generate new grey-value vs. brightness relationships for the primary colors, so as to obtain adjusted grey values of the primary colors corresponding to the adjusted brightness values.
    Type: Application
    Filed: June 30, 2009
    Publication date: January 7, 2010
    Applicant: WINTEK CORPORATION
    Inventors: Jyun-Sian Li, Chih-Chang Lai
  • Publication number: 20090284461
    Abstract: An image display method for a display apparatus is provided. The display apparatus has a light source module for providing a light source. An original image including a plurality of original pixels is provided, wherein each original pixel is represented by a plurality of first gray levels. A histogram is established according to the first gray levels. An adjustment factor is established according to the histogram, and the brightness of the light source is adjusted according to the adjustment factor. A brightness factor is established, and the original pixels are transformed into a plurality of output pixels according to the brightness factor such that the display apparatus displays an output image according to the output pixels. Each of the output pixels is represented by a plurality of second gray levels, and each of the second gray levels is the product of the first gray level and the corresponding brightness factor.
    Type: Application
    Filed: May 18, 2009
    Publication date: November 19, 2009
    Applicant: WINTEK CORPORATION
    Inventors: Ching-Fu Hsu, Chih-Chang Lai
  • Publication number: 20090225016
    Abstract: A light-sensitive driving circuit, a light-sensitive driving method and a display are provided. The light-sensitive driving circuit comprises a pulse width modulation circuit, a judge unit and a first analog-to-digital converter. The pulse width modulation circuit provides a pulse width modulation voltage to drive a light-sensitive apparatus, so that the light-sensitive apparatus outputs an induced signal according to an external light. The judge unit judges whether a check and burn procedure needs to be operated or not according to an external command. If the check and burn procedure does not need to be operated, the first analog-to-digital converter outputs a digital signal according to the induced signal.
    Type: Application
    Filed: March 9, 2009
    Publication date: September 10, 2009
    Applicant: WINTEK CORPORATION
    Inventors: Chih-Chang Lai, Wen-Chun Wang
  • Publication number: 20090213109
    Abstract: The invention discloses a driving method for a display. The method includes the following steps: providing a pixels structure; receiving a plurality of frames; driving the (2n?1)th scan line and the (2n)th scan line by turns while receiving the number of odd frame; driving (2n)th scan line and (2n?1)th scan line by turns while receiving the number of even frame; adjusting the voltage of the Vcom according to pixels voltage value which are the voltage to be written into the pixels by odd data lines and even data lines while the pixels structure receiving the number of odd frame and the number of the even frame.
    Type: Application
    Filed: February 20, 2009
    Publication date: August 27, 2009
    Inventors: Chih-Chang LAI, Lin Lin, Wen Hung Wang
  • Publication number: 20090211891
    Abstract: A touch panel including a first substrate, a second substrate, a first conductive layer, a second conductive layer, a third conductive layer, and a number of spacers is provided. The first substrate has an upper surface and a bottom surface opposite to the upper surface. The second substrate is parallel to the first substrate. The first conductive layer is disposed on the upper surface of the first substrate, while the second conductive layer is disposed on the bottom surface of the first substrate. The third conductive layer is disposed on the second substrate and interposed between the second substrate and the second conductive layer. The spacers are interposed between the second conductive layer and the third conductive layer. The touch panel has functions of multi-touch, contact-touch and non-contact touch, and the touch panel can be operated by conductive objects or dielectric objects.
    Type: Application
    Filed: February 19, 2009
    Publication date: August 27, 2009
    Applicant: WINTEK CORPORATION
    Inventors: Chih-Chang Lai, Nai-Heng Chang
  • Publication number: 20090207194
    Abstract: A driving method adapted to driving an optical touch panel is provided. The optical touch panel is disposed on a backlight module and has a plurality of touch sensing elements. The touch sensing elements have a light-shading sensing mode and a light-reflecting sensing mode. The driving method includes sensing an intensity of an ambient light. When the intensity of the ambient light is greater than a reference, the touch sensing elements operate in the light-shading sensing mode. Alternately, when the intensity of the ambient light is smaller than the reference, the touch sensing elements operate in the light-reflecting sensing mode. The abovementioned driving method is help for the optical touch panel to accurately sensing in various conditions of different ambient lights such that the usage of the optical touch panel is more convenient.
    Type: Application
    Filed: February 18, 2009
    Publication date: August 20, 2009
    Applicant: WINTEK CORPORATION
    Inventors: Po-Hsien Wang, Chih-Chang Lai
  • Publication number: 20090180707
    Abstract: An image processing apparatus and an image processing method. The image processing apparatus includes a first convolution unit, a weight generator, a second convolution unit, an arithmetic unit and an outputting unit. The first convolution unit performs a convolution to output edge strength according to an original image signal and a high pass filter mask. The weight generator chooses a weight coefficient according to the edge strength. The second convolution unit performs a convolution to output an unsharp image signal according to the original image signal and a low pass filter mask. The arithmetic unit outputs a first sharpening signal according to the original image signal, the unsharp image signal and the weight coefficient. The outputting unit outputs a processed image signal according to the original image signal and the first sharpening signal.
    Type: Application
    Filed: January 13, 2009
    Publication date: July 16, 2009
    Applicant: WINTEK CORPORATION
    Inventors: Jyun-Sian Li, Chih-Chang Lai, Ruey-Shing Weng, Ching-Fu Hsu
  • Publication number: 20090160817
    Abstract: A transparent capacitive touch panel comprising a transparent substrate, a transparent cover lens and a transparent adhesive layer is provided, wherein a first transparent electrode layer and a second transparent electrode layer are disposed on the transparent cover lens and the transparent substrate respectively. The transparent adhesive layer is used to bind the first transparent electrode layer and second transparent electrode layer in order to combine the transparent cover lens and the transparent substrate disposed in parallel. Thereby, the manufacturing process of the transparent capacitive touch panel is simplified, and the manufacturing cost of the same is lowered.
    Type: Application
    Filed: December 23, 2008
    Publication date: June 25, 2009
    Applicant: WINTEK CORPORATION
    Inventors: Jason WU, Yen-Chung HUNG, Ruey-Shing WENG, Chih-Chang LAI
  • Publication number: 20090160871
    Abstract: An image data conversion method is provided. The method comprises the following steps of (a) receiving an original image data having three basic-color sub-pixel data and (b) calculating at least one color-enhancing sub-pixel data according to any two basic-color sub-pixel data so as to convert the original image data into an image data having at least three basic-color sub-pixel data and one color-enhancing sub-pixel data. The calculation of the color-enhancing sub-pixel data is represented as: J i = [ var . - ( ? D i - E i ? S ) ] × Max ? ( D i , E i ) wherein 0.8<var.<1.
    Type: Application
    Filed: December 19, 2008
    Publication date: June 25, 2009
    Applicant: WINTEK CORPORATION
    Inventors: Ching-Fu Hsu, Chih-Chang Lai, Jyun-Sian Li, Ruey-Shing Weng
  • Publication number: 20090116740
    Abstract: An image processing method for individually processing an image of each pixel unit is provided. A red-green-blue color space signal to be input to a pixel unit is transformed into a first brightness signal. The red-green-blue color space signal includes a first red signal, a first green signal and a first blue signal. The first brightness signal is transformed into a second brightness signal to obtain a contrast factor, wherein the contrast factor is a ratio of the second brightness signal and the first brightness signal. The first red signal, the first green signal and the first blue signal are multiplied by the contrast factor to obtain a second red signal, a second green signal and a second blue signal. The second red signal, the second green signal and the second blue signal are performed by color enhancement to obtain a high contrast and colorful image.
    Type: Application
    Filed: November 5, 2008
    Publication date: May 7, 2009
    Applicant: WINTEK CORPORATION
    Inventors: Jyun-Sian Li, Chih-Chang Lai, Ching-Fu Hsu, Ruey-Shing Weng
  • Publication number: 20080297467
    Abstract: A method for backlight modulation and image processing is disclosed to control the backlight to modulate the brightness with different image data inputs and re-process the original image data. In the part of the backlight control, the method comprises acquiring a reference value, APL (average picture level), based on histogram analysis and the judgment process of backlight modulation by an algorithm. In the part of the image processing, the method comprises extracting a value correlating to the brightness from RGB data value with the transformation rule between different color spaces and re-mapping the value and outputting another image data value.
    Type: Application
    Filed: May 30, 2008
    Publication date: December 4, 2008
    Applicant: WINTEK CORPORATION
    Inventors: Ching-Fu Hsu, Chih-Chang Lai, Jyun-Sian Li
  • Publication number: 20080198626
    Abstract: A backlight module has a light guide plate and a plurality of light sources. The light guide plate includes a light exit surface, a plurality of light entrance surfaces round the light exit surface, and a plurality of light guide portions disposed on the bottom surface opposite to the light exit surface. The light guide portions corresponding to the same imaginary circle center constitute a concentric arc-shaped light guide portion set. The imaginary circle center of each light guide portion set is located at the outer side of the light entrance surfaces. Light rays projected to one of the light entrance surfaces from the imaginary circle center of each light guide portion set are guided to a light exit surface by the light guide portion set. The wavelength of the light ray projected by each light source is not equal to that of the light projected by another light source.
    Type: Application
    Filed: February 21, 2007
    Publication date: August 21, 2008
    Inventors: Chih-Chang Lai, Chung-Yang Fang
  • Publication number: 20080165301
    Abstract: A liquid crystal display panel with electrostatic discharge protection capability has an array substrate having an active area, a driver IC, a Vcom wire and an electrostatic reduction element formed on. The driver IC is formed beside the active area. The Vcom wire is formed around the active area and is connected with the electrostatic reduction element to the driver IC. When an electrostatic discharge current flows on the Vcom wire to the driver IC, the electrostatic reduction element mitigates or obviates damage to the driver IC.
    Type: Application
    Filed: January 7, 2008
    Publication date: July 10, 2008
    Applicant: WINTEK CORPORATION
    Inventors: Nai-Heng CHANG, Chih-Ming CHEN, Lin LIN, Chih-Chang LAI, Wen-Chun WANG, Shyh-Jeng CHEN, Chun Chieh WU, Chi-Ming HSIEH
  • Publication number: 20080106678
    Abstract: A color filter structure disposed in a displaying panel of a display device is provided. The color filter structure includes several filtering layers with at least four colors. The four colors are red, blue, a first color and a second color. The first color is between green and cyan. The second color is between green and yellow.
    Type: Application
    Filed: October 26, 2007
    Publication date: May 8, 2008
    Applicant: Wintek Corporation
    Inventors: Po-Hsien Wang, Hsuan-Yang Chen, Chih-Chang Lai
  • Publication number: 20080049002
    Abstract: A scan line driving method of a liquid crystal display divides scan times of a first scan line and a second scan line so that enabled times of the first scan line and the second scan line respectively equal a charge time and a discharge time. The first scan line and the second scan line respectively control a first row of pixels and a second row of pixels of the liquid crystal display.
    Type: Application
    Filed: August 23, 2007
    Publication date: February 28, 2008
    Applicant: Wintek Corporation
    Inventors: Lin Lin, Bau-Jy Liang, Chun-Ming Huang, Chih-Chang Lai, Tai-Yuan Chen, Shen-Ping Chiang