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).
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Patent number: 8570288Abstract: A touch panel having a transparent region and a peripheral region surrounding the transparent region is provided. The touch panel includes a transparent cover, a touch device, a light-shielding layer, a layer of conductive lines, and a touch chip. The transparent cover has a touch surface and a device mounting surface opposite thereto. The touch device is disposed on the device mounting surface and at least located at the transparent region. The light-shielding layer is disposed on the transparent cover and located inside the peripheral region. The layer of conductive lines is disposed on the device mounting surface, located inside the peripheral region, and electrically connected to the touch device. The touch chip is disposed on the layer of conductive lines through a chip-on-glass process.Type: GrantFiled: March 26, 2010Date of Patent: October 29, 2013Assignee: Wintek CorporationInventors: Chih-Chang Lai, Shiao-Hui Liao, Yu-Hung Chang, Ping-Wen Huang, Ming-Kung Wu, Hsiao-Ping Li
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Publication number: 20130277091Abstract: An electrode structure of a capacitive touch panel including a plurality of receiving electrodes and driving electrodes is provided. Each of the receiving electrodes has at least one opening. Each of the driving electrodes includes a main region and a plurality of elongation regions. The area of each driving electrode is larger than that of each receiving electrode. Parts of the receiving electrodes surround a corresponding one of the driving electrodes, and the elongation regions of the surrounded driving electrode correspondingly stretch into the openings of the receiving electrodes which surround the driving electrode. By using the foregoing electrode structure, the capacitive touch panel is not only capable of providing sensing signals with less noise but is also capable of increasing input signals to enhance the signal to noise ratio.Type: ApplicationFiled: April 18, 2013Publication date: October 24, 2013Applicant: Novatek Microelectronics Corp.Inventors: Chun-Chieh Chang, Chih-Chang Lai, Chih-Peng Hsia
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Publication number: 20130264095Abstract: An electrode structure of a capacitive touch panel is provided, which includes a plurality of receiving electrodes and a plurality of driving electrodes. Each of the receiving electrodes has a hexagonal electrode structure. Each of the driving electrodes includes a main region. Each of the main regions has a quadrilateral electrode structure. The area of each driving electrode is larger than that of each receiving electrode. By using the foregoing electrode structure, the capacitive touch panel can not only provide sensing signals with less noise but also increase the intensity of input signals to enhance the signal to noise ratio.Type: ApplicationFiled: November 19, 2012Publication date: October 10, 2013Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Chih-Chang Lai, Shih-Ming Lin, Chih-Peng Hsia
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Publication number: 20130241875Abstract: 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: ApplicationFiled: May 3, 2013Publication date: September 19, 2013Applicant: Wintek CorporationInventors: Jason WU, Yen-Chung HUNG, Ruey-Shing WENG, Chih-Chang LAI
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Patent number: 8531365Abstract: A liquid crystal display device includes a plurality of pixel units. Each of the pixel units includes a first thin film transistor and a second thin film transistor, a reflective sheet, and a storage capacitor. The channel width/length ratio of the first thin film transistor and the channel width/length ratio of the second thin film transistor are both larger than 12/5. The reflective sheet is disposed adjacent to the first thin film transistor and the second thin film transistor to reflect ambient light. The storage capacitor is formed at a position overlapping the reflective sheet and has a capacitance of larger than 1 pF.Type: GrantFiled: April 8, 2010Date of Patent: September 10, 2013Assignee: Wintek CorporationInventors: Chih-Chang Lai, Nai Heng Chang, Wen-Chun Wang, Po-Hsien Wang, Jyun-Sian Li, Ching-Fu Hsu, Wei-Jian Chang
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Patent number: 8508556Abstract: An image display method including following steps is provided. A backlight of a display panel is adaptively adjusted according to a backlight adjustment factor related to the intensity value of an external light and the brightness of an original image. Brightness factors of the original image are corrected according to the adjustment of the backlight, and the original image is reset by using the corrected brightness factors and original color factors. Thereby, the problem of image distortion caused by backlight adjustment can be reduced.Type: GrantFiled: April 20, 2010Date of Patent: August 13, 2013Assignee: Wintek CorporationInventors: Ching-Fu Hsu, Chih-Chang Lai, Shiao-Hui Liao, Ting-Yu Chang
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Patent number: 8497846Abstract: A method for double click detection includes the following steps. Firstly whether first event is detected is determined, if so, first corresponding position is obtained, a period counting is triggered, and first flag is set. Then whether the period ends is judged; if not and the first flag exists, a counter is incremented and second flag is set when first ending event is detected; if not and the second flag exists, second corresponding position is obtained and third flag is set when second event is detected; if not and the third flag exists, the counter is incremented when second ending event is detected; if so, a double click event is determined when the incremented value is greater than a threshold and a distance between the first and the second positions is smaller a threshold.Type: GrantFiled: September 15, 2011Date of Patent: July 30, 2013Assignee: Novatek Microelectronics Corp.Inventors: Chun-Chieh Chang, Hui-Hung Chang, Chih-Chang Lai
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Patent number: 8482542Abstract: 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: GrantFiled: September 7, 2012Date of Patent: July 9, 2013Assignee: Wintek CorporationInventors: Jason Wu, Yen-Chung Hung, Ruey-Shing Weng, Chih-Chang Lai
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Patent number: 8477113Abstract: 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: GrantFiled: September 7, 2012Date of Patent: July 2, 2013Assignee: Wintek CorporationInventors: Jason Wu, Yen-Chung Hung, Ruey-Shing Weng, Chih-Chang Lai
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Patent number: 8451300Abstract: A backlight modulation system includes a light source module, an image mapping unit, a histogram analysis unit, a backlight dimming unit, and an image reconstruction unit. An active display area of a panel is divided into multiple illumination areas. The image mapping unit performs an RGB-to-YUV transformation to acquire an original brightness factor for each pixel. The histogram analysis unit sums up the amount of pixels reaching a preset ratio in each illumination area to acquire reference brightness for each illumination area. The backlight dimming unit calculates out a dimming ratio and a reset brightness model according to the reference brightness. The image reconstruction unit resets original brightness factor of each pixel into an output brightness factor according to the reset brightness model, and outputs an image for an illumination area according to the output brightness factor and input image data.Type: GrantFiled: December 27, 2010Date of Patent: May 28, 2013Assignee: Wintek CorporationInventors: Ching-Fu Hsu, Chih-Chang Lai
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Publication number: 20130106733Abstract: A touch sensing method for a touch panel is provided. The touch sensing method includes following steps. First, a plurality of sensing values of a plurality of sensing points are received so as to calculate a plurality of sensing difference values according to the sensing values. Next, a touch threshold value is determined according to at least one (e.g., a maximum one) of the sensing difference values. Then, the sensing difference values are compared with the touch threshold value to determine the coordinates of the touched ones of the sensing points according to the comparison result.Type: ApplicationFiled: April 6, 2012Publication date: May 2, 2013Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Shun-Li Wang, Jyun-Sian Li, Chih-Chang Lai
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Patent number: 8427442Abstract: A touch apparatus including a touch panel and a touch sensing circuit is provided. The touch panel includes a first transparent substrate, a plurality of first conductive patterns, a second transparent substrate, a plurality of second conductive patterns and a plurality of spacers. The touch sensing circuit includes a first demultiplexer, a second demultiplexer, a first multiplexer, a second multiplexer, a third multiplexer, a fourth multiplexer, a fifth multiplexer, a sixth multiplexer and an analog/digital converter (ADC). The fifth multiplexer and the sixth multiplexer are used for modulating a signal receiving range of the ADC and thus the touch sensing circuit is easily judge a correctness of a sensing signal.Type: GrantFiled: October 20, 2009Date of Patent: April 23, 2013Assignee: Wintek CorporationInventors: Ting-Yu Chang, Chih-Chang Lai
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Publication number: 20130093692Abstract: A gesture detecting method capable of filtering a panel mistouch includes following steps is provided. First, an area of a touch region for a touch event on a touch panel is detected. Next, it is determined whether the area of the touch region is greater than a minimum predetermined area value and smaller than a maximum predetermined area value. When a result of the above determination is affirmative, whether a shape of the touch area is a mistouch shape is determined. Finally, when the shape of the touch region is the mistouch shape, a set of touch coordinates is not reported.Type: ApplicationFiled: January 16, 2012Publication date: April 18, 2013Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Tsung-Yu Wang, Yi-Rong Ko, Chih-Chang Lai
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Patent number: 8421773Abstract: A resistive touch panel includes a first substrate, a second substratem and a driving circuit. A first conductive layer is disposed on the first substrate and includes a first, a second, a third, and a fourth corners which are different from each other. A first, a second, a third, and a fourth conducting wires are electrically connected to the first, second, third, and fourth corners, respectively. The second substrate is disposed parallel to the first substrate. A second conductive layer is disposed on the second substrate and faces the first conductive layer. A fifth conducting wire is electrically connected to a first side of the second conductive layer while a sixth conducting wire is electrically connected to a second side of the second conductive layer. The driving circuit is electrically connected to the first, second, third, fourth, fifth, and sixth conducting wires.Type: GrantFiled: November 30, 2010Date of Patent: April 16, 2013Assignee: Wintek CorporationInventors: Jyun-Sian Li, Chih-Chang Lai, Ting-Yu Chang
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Patent number: 8421772Abstract: 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: GrantFiled: January 22, 2010Date of Patent: April 16, 2013Assignee: Wintek CorporationInventors: Jian-Feng Li, Wen-Chun Wang, Chih-Chang Lai, Kuo-Chang Su, Gwo-Sen Lin, Chih-Hao Wang
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Patent number: 8405525Abstract: A touch sensing method for a resistive type touch apparatus includes a touch panel and a driving circuit. In the touch sensing method, a single-touch mode or a multi-touch mode can be selected. In addition, the touch sensing method includes an analog driving method and a digital driving method to equip the resistive type touch apparatus with at least two sorts of resolutions.Type: GrantFiled: June 17, 2010Date of Patent: March 26, 2013Assignees: Dongguan Masstop Liquid Crystal Display Co., Ltd., Wintek CorporationInventors: Wen-Chun Wang, Kuo-Chang Su, Chih-Chang Lai
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Publication number: 20130027331Abstract: A zoom gesture determination method for a touch control device includes detecting a first touch point and a second touch point; determining a position difference between the first touch point and the second touch point; and deciding a zoom gesture represented by the first touch point and the second touch point according to variations in the position difference.Type: ApplicationFiled: July 25, 2012Publication date: January 31, 2013Inventors: Hui-Hung Chang, Chih-Chang Lai
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Publication number: 20130001059Abstract: 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: ApplicationFiled: September 7, 2012Publication date: January 3, 2013Inventors: Jason WU, Yen-Chung Hung, Ruey-Shing Weng, Chih-Chang Lai
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Publication number: 20120325640Abstract: 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: ApplicationFiled: September 7, 2012Publication date: December 27, 2012Inventors: Jason WU, Yen-Chung Hung, Ruey-Shing Weng, Chih-Chang Lai
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Patent number: 8330738Abstract: 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: GrantFiled: April 25, 2011Date of Patent: December 11, 2012Assignee: Wintek CorporationInventors: Yen Chung Hung, Ruey-Shing Weng, Chih-Chang Lai