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Chih-Ming Chang

Chih-Ming Chang, Taichung City TW

Patent application numberDescriptionPublished
20110057680ACTIVE DEVICE ARRAY AND TESTING METHOD - An active device array includes a plurality of scan lines, a plurality of data lines, a plurality of pixel structures, a first testing circuit, a second testing circuit, a third testing circuit and a fourth testing circuit. Each of the pixel structures is connected to one of the scan lines and one of the data lines. The first testing circuit is electrically connected to the odd scan lines; the second testing circuit is electrically connected to the (4n+1)th scan lines wherein n is zero or a positive integer; the third testing circuit is electrically connected to the even scan lines; the fourth testing circuit is electrically connected to the (4n+2)th scan lines.03-10-2011

Chih-Ming Chang, Taipei County TW

Patent application numberDescriptionPublished
20100321839OVER-CURRENT PROTECTION DEVICE FOR MULTIPLE HIGH-VOLTAGE MOTIVE DEVICES AND METHOD THEREOF - An over-current protection device for multiple high-voltage motive devices is provided. The over-current protection device includes a comparison module and a logic operation module. The comparison module receives a plurality of voltages generated from a plurality of operating currents of a plurality of high-voltage motive devices and respectively compares the voltages with at least one reference voltage to generate a plurality of comparison results, wherein the high-voltage motive devices are solenoids, electronic clutches, or a combination of solenoids and electronic clutches. The logic operation module receives the comparison results and generates at least one control signal for a plurality of high-voltage motive device driving circuits according to the comparison results. The high-voltage motive device driving circuits respectively drive the high-voltage motive devices according to the control signal.12-23-2010
20120090879FLEXIBLE PRINT CIRCUIT BENDING METHOD FOR CONNECTING IN A PHONE AND FLEXIBLE PRINT - The present invention discloses a flexible print circuit board bending method for connecting in a smart phone and a flexible print circuit board thereof. In the method, several portions of a flexible print circuit board is bend to suit multiple electronic units mounted on the front or rear casing of a smart phone. Consequently, there is only one surface of the flexible print circuit board needs to be processed to dispose connecting points, so cost of manufacturing the smart phone could be decreased. Besides, bending the flexible print circuit board to suit the electronic units could avoid space waste in the smart phone, such that helps to efficiently narrow down the scale of the smart phone.04-19-2012
20120092814ELECTRONIC DEVICE AND KEY SUPPORTING STRUCTURE THEREOF - An electronic device and a key supporting structure thereof are disclosed. The key supporting structure includes a main body, at least one operating key, and a supporting member. The main body includes an opening, within which the at least one operating key and a display device are located. The supporting member is located behind and corresponding to the at least one operating key for supporting the same. By providing the supporting member behind the operating key, the display device can be arranged to closely adjoin the operating key without the need of providing any frame structure between them while the electronic device can still have a structural strength satisfying product tests according to the relevant industry codes. Meanwhile, the display device can have the largest possible size on the electronic device.04-19-2012
20120093494SMART PHONE WITH LENS - The present invention discloses a smart phone with a lens comprising a main body, a circuit board, a lens module, a speaker module and a flash module. The main body includes a rear casing having a circuit board mount formed at a lower portion of an inner surface of the rear casing, a lens mount formed at a position adjacent to an upper side of the circuit board mount and attached onto a lateral edge of the rear casing, and a speaker mount formed at an upper edge of the inner surface of the rear casing corresponding to another lateral edge of the rear casing. The circuit board is mounted in the circuit board mount. The lens module is mounted in the lens mount. The speaker module is mounted in the speaker mount. The flash module is mounted between the lens module and the upper edge of the rear casing.04-19-2012

Chih-Ming Chang, Tainan County TW

Patent application numberDescriptionPublished
20100268977METHOD AND APPARATUS FOR ACCESSING MEMORY UNITS - An apparatus for accessing a memory is provided, and comprises a first device, a second device, an adjusting unit, a buffer and a memory. The first device operates at a first clock. The second device operates at a second clock. The buffer reads data from the second device to be written to the memory unit and reads from the memory unit to be read by the first device. The adjusting unit masks a portion of pulses of the first clock to generate an adjusted clock, wherein the first device reads the buffer according to the adjusted clock. The apparatus for accessing a memory is a video processor, and the first device and the second device are an input unit and an output unit of the video processor.10-21-2010

Chih-Ming Chang, Taoyuan County TW

Patent application numberDescriptionPublished
20080277141CIRCUIT BOARD AND METHOD OF FABRICATING THE SAME - A circuit board including a dielectric layer, a circuit layer, at least one conductive joint column, and a solder mask layer is provided. The circuit layer having at least one pad is in contact with the dielectric layer. The conductive joint column is disposed on the pad. The solder mask layer is disposed on the dielectric layer and covers the circuit layer. The solder mask layer is in contact with the conductive joint column, and the conductive joint column penetrates the solder mask layer. A height of the conductive joint column is larger than a thickness of the solder mask layer. The enhanced reliability of bonding between another component and the conductive joint column will be provided. Further, a method of fabricating a circuit board is also provided.11-13-2008
20090033847LIQUID CRYSTAL DISPLAY DEVICE WITH VARIOUS REFLECTIVE PATTERN ARRANGEMENTS - A method for arranging reflective patterns for a liquid display (LCD) device. A substrate having at least one first pixel region and one second pixel region is provided, in which the first and second pixel regions have a reflector thereon, respectively, and the first pixel region is adjacent to the second pixel region. A first pattern is formed on the reflector on the first pixel region. A second pattern is formed on the reflector on the second pixel region, in which the second pattern is formed by dividing the first pattern into at least two pattern regions according to a predetermined direction and rearranging the pattern regions.02-05-2009
20090075189METHODS FOR FABRICATING TRANSFLECTIVE LIQUID CRYSTAL DISPLAYS - A method for fabricating a display is disclosed. A first substrate comprising a plurality of pixels is provided, each pixel comprises a plurality of sub pixels. A second substrate substantially opposite to the first substrate is provided, wherein the second substrate is divided into a plurality of regions corresponding to the sub-pixels, and at least three of the regions are color regions and at least one of the regions is a fourth region. A photoresist pattern layer is formed on the second substrate, such that the photoresist pattern layer corresponding to the at least three color regions are color photoresist pattern layers and the photoresist pattern layer corresponding to the at least one fourth region is a fourth photoresist pattern layer. A first covering layer is formed on the photoresist layer. A liquid crystal layer is interposed between the first substrate and the second substrate.03-19-2009
20090117262METHOD OF FABRICATING CIRCUIT BOARD - A method of fabricating a circuit board includes the following steps. First, a patterned metal board is provided. The patterned metal board includes a patterned circuit having at least a pad. Next, a dielectric layer is formed on the patterned metal board to cover the patterned circuit. Thereafter, a processing treatment is preformed on a surface of the patterned metal board in which the surface is opposite to the patterned circuit, such that at least a conductive joint column disposed on the pad and a circuit layer having the patterned circuit are formed. Afterwards, a solder mask layer is formed on the dielectric layer to cover the circuit layer, such that the solder mask layer is in contact with the conductive joint column, the conductive joint column passes through the solder mask layer, and a height of the conductive joint column exceeds a thickness of the solder mask layer.05-07-2009
20100043962FABRICATION METHOD OF RIGID-FLEX CIRCUIT BOARD - A fabrication method of a rigid-flex circuit board is described as follows. Firstly, a flexible circuit board and at least a cover layer are provided. The cover layer covers a surface of the flexible circuit board. A protection layer is then formed on the cover layer. Next, a substrate is laminated to the surface of the flexible circuit board. The substrate has a conductive layer and a prepreg disposed between the conductive layer and the cover layer. The prepreg has an opening for accommodating the protection layer. Thereafter, the conductive layer is patterned for forming a patterned conductive layer. Afterwards, the protection layer is removed.02-25-2010
20100044716PIXEL STRUCTURE AND LIQUID CRYSTAL DISPLAY PANEL - A pixel structure is disclosed. The pixel structure is suitable to be disposed on a substrate and includes a first pixel electrode, a second pixel electrode and a top gate TFT. The first pixel electrode and the second pixel electrode are disposed over the substrate, wherein the first pixel electrode and the second pixel electrode are separated from each other. The top gate TFT is disposed between the substrate and the first pixel electrode and includes a patterned semiconductor layer and a gate.02-25-2010
20100225862LIQUID CRYSTAL DISPLAY PANEL - An LCD panel including a first substrate, a second substrate disposed above the first substrate, a plurality of signal lines disposed on the first substrate, and a plurality of sub-pixel sets arranged between the first substrate and the second substrate. Each sub-pixel set includes a plurality of sub-pixels electrically connected to the signal lines, each sub-pixel set has a spacer disposed between the first substrate and the second substrate, and each spacer form a region in each corresponding sub-pixel set, wherein the area of the sub-pixel with the region is substantially greater than the area of other sub-pixels, and the effective display area of the sub-pixel with the region is substantially equal to the effective display area of other sub-pixels.09-09-2010
20120119996KEY STRUCTURE AND CAPACITIVE SENSING DEVICE USING THE SAME THEREOF - A key structure and a capacitive sensing device using the same are provided. The key structure is disposed on the capacitive sensing panel. The key structure comprises a pressing portion and a support portion. The pressing portion has a pressing surface and a conductive surface opposite to the pressing surface. The pressing surface is connected to the conductive surface, which faces the capacitive sensing panel. The support portion is connected to the pressing portion. When the pressing portion is pressed, the conductive surface of the pressing portion is close to or touches the capacitive sensing panel.05-17-2012

Patent applications by Chih-Ming Chang, Taoyuan County TW

Chih-Ming Chang, Jhongli City TW

Patent application numberDescriptionPublished
20090296009LIQUID CRYSTAL DISPLAY PANEL AND LIQUID CRYSTAL DISPLAY DEVICE INCORPORATING THE SAME - A liquid crystal display panel and a liquid crystal display device incorporating the same are provided. The liquid crystal display panel includes a first substrate, a second substrate and a liquid crystal layer. The first substrate includes a first base, a dielectric layer and a storage capacitor. The storage capacitor includes a reflective electrode. The dielectric layer covers at least part of the storage capacitor. The second substrate is substantially paralleled to the first substrate. The second substrate includes a second base, a black matrix and a common electrode. The black matrix corresponds to the storage capacitor. The black matrix includes an opening corresponding to the reflective electrode. The opening is provided to let an outside light enter into the liquid crystal display panel such that the reflective electrode reflects the outside light to provide a light source to the liquid crystal display panel.12-03-2009
20100139856Method for Manufacturing a Liquid Crystal Display - A method for manufacturing a transflective LCD panel having a transmissive region and a reflective region includes steps of providing an upper substrate and a lower substrate in parallel, forming a first alignment film on the upper substrate, forming a reflective layer on the reflective region of the lower substrate, forming an first insulating layer to cover the reflective layer and the lower substrate, forming a second insulating layer to cover the first insulating layer, forming positive and negative driving electrodes wrapped in the second insulating layer, forming a coplanar second alignment film to cover the second insulating layer, packaging the upper substrate and the lower substrate, and filling liquid crystal molecules.06-10-2010
20100141858Transflective liquid crystal display with gamma harmonization - In a transflective liquid crystal display having a transmission area and the reflection area, the transmissive electrode is connected to a switching element to control the liquid crystal layer in the transmission area, and the reflective electrode is connected to the switching element via a separate capacitor to control the liquid crystal layer in the reflection area. The separate capacitor is used to shift the reflectance in the reflection area toward a higher voltage end in order to avoid the reflectance inversion problem. In addition, an adjustment capacitor is connected between the reflective electrode and a different common line. The adjustment capacitor is used to reduce or eliminate the discrepancy between the gamma curve associated with the transmittance and the gamma curve associated with the reflectance.06-10-2010
20110115996Transflective liquid crystal display with gamma harmonization - In a transflective liquid crystal display having a transmission area and the reflection area, the transmissive electrode is connected to a switching element to control the liquid crystal layer in the transmission area, and the reflective electrode is connected to the switching element via a separate capacitor to control the liquid crystal layer in the reflection area. The separate capacitor is used to shift the reflectance in the reflection area toward a higher voltage end in order to avoid the reflectance inversion problem. In addition, an adjustment capacitor is connected between the reflective electrode and a different common line. The adjustment capacitor is used to reduce or eliminate the discrepancy between the gamma curve associated with the transmittance and the gamma curve associated with the reflectance.05-19-2011

Patent applications by Chih-Ming Chang, Jhongli City TW

Chih-Ming Chang, Hsin-Chu TW

Patent application numberDescriptionPublished
20080239227Pixel Structure, Display Panel, Electro-Optical Device, and Method for Manufacturing the Same - A pixel structure has a pair of substrates, a liquid crystal layer, pixel regions, a patterned organic material layer, and a shielding layer. The liquid crystal layer is disposed between the pair of substrates. The pixel regions are provided on the substrates, and each of the pixel regions is defined by at least two common lines and at least one data line and includes at least two sub-pixel regions. Each pixel region has a pixel electrode which has a main slit adjacent to the border between the two sub-pixel regions. The patterned organic material layer is disposed on one of the substrates and corresponds to one of the sub-pixel regions. The shielding layer is placed corresponding to the main slit. Display panel and electro-optical device which have the pixel structure and the methods for manufacturing them are also disclosed.10-02-2008
20090002611TRANSFLECTIVE LIQUID CRYSTAL DISPLAY PANEL AND PIXEL STRUCTURE THEREOF - The transflective LCD panel has many scan lines, data lines, and common electrodes, in which each data line includes a first data line section and a second data line section, and each common electrode has at least one first common electrode section. The scan lines and the second data line sections are made of a first conductive layer; and the first data line sections and the common electrodes are made of a second conductive layer. The first common electrode sections and the corresponding pixel electrodes are overlapped, thus providing the storage capacitance.01-01-2009
20090059142TRANSFLECTIVE LCD DEVICE - A transflective LCD device includes an array substrate and a color filter. The substrate includes a plurality gate lines, a plurality of common lines, and a plurality of data lines substantially crossing the gate lines to define a plurality of sub-pixel regions. Each sub-pixel region has a reflective area and a transmissive area. Two of the reflective area of two adjacent sub-pixel regions in the same column are juxtaposed to each other. The color filter has a plurality of sub-pixel regions respectively aligned with the sub-pixel regions of the array substrate. The color filter includes an insulating layer disposed on the reflective area of a respective sub-pixel region. An LC layer is disposed between the array substrate and the color filter.03-05-2009
20090195564Driving method in liquid crystal display - A driving method in a liquid crystal display comprises the steps of: (a) receiving a first signal in a first time period; (b) comparing the first signal with a predetermined signal; (c) outputting the predetermined signal when a value of the first signal being smaller than or equal to a value of the predetermined signal; (d) transforming the predetermined signal into a driving voltage to drive a pixel; and (e) receiving a second signal and generating an overdriving voltage according to the predetermined signal and the second signal to drive the pixel in a second time period.08-06-2009
20100134750Liquid Crystal Display Panels - A liquid crystal display panel comprises a color filter substrate, a thin film transistor array substrate, and a liquid crystal layer sealed between the two substrates. The color filter substrate has a plurality of first spacers and a plurality of second spacers thereon. The thin film transistor array substrate has a plurality of recesses for containing the second spacers. The ratio of the number of the second spacers to the number of the first spacers is between about 10 and about 90.06-03-2010
20110242452TRANSFLECTIVE LCD DEVICE - A transflective LCD device includes an array substrate and a color filter. The substrate includes a plurality gate lines, a plurality of common lines, and a plurality of data lines substantially crossing the gate lines to define a plurality of sub-pixel regions. Each sub-pixel region has a reflective area and a transmissive area. Two of the reflective area of two adjacent sub-pixel regions in the same column are juxtaposed to each other. The color filter has a plurality of sub-pixel regions respectively aligned with the sub-pixel regions of the array substrate. The color filter includes an insulating layer disposed on the reflective area of a respective sub-pixel region. An LC layer is disposed between the array substrate and the color filter.10-06-2011

Patent applications by Chih-Ming Chang, Hsin-Chu TW

Chih-Ming Chang, Tinan City TW

Patent application numberDescriptionPublished
20090025210CIRCUIT BOARD STRUCTURE WITH CONCAVE CONDUCTIVE CYLINDERS AND METHOD FOR FABRICATING THE SAME - A method for fabricating a circuit board structure with concave conductive cylinders is provided. Firstly, a conductive layer is provided; a plurality of conductive cylinders are formed on a surface of the conductive layer; a dielectric layer is formed on the surface of the conductive layer with the conductive cylinders; the tips of the conductive cylinders are exposed on a surface of the dielectric layer far away from the conductive layer; removing the exposed tips of the conductive cylinders such that the height of the conductive cylinders is lower than the height of the dielectric layer, and the conductive cylinders sunk into the dielectric layer.01-29-2009
20100101083METHOD FOR FABRICATING CIRCUIT BOARD STRUCTURE WITH CONCAVE CONDUCTIVE CYLINDERS - A method of fabricating a circuit board structure with concave conductive cylinders is provided. Firstly, a conductive layer is provided and a dielectric layer is formed on a surface of the conductive layer. Next, a plurality of vias is formed in the dielectric layer, where the vias are exposed on the surface of the conductive layer. A conductive material is then filled in the vias to form a plurality of conductive cylinders on the surface of the conductive layer, so that the tips of the conductive cylinders are exposed on a surface of the dielectric layer relatively far away from the conductive layer. The exposed tips of the conductive cylinders are removed, so that the height of the conductive cylinders is lower than the dielectric layer and the conductive cylinders sunk into the dielectric layer.04-29-2010

Chih-Ming Chang, Taipei City TW

Patent application numberDescriptionPublished
20090279215Protecting device for multi-motors and method thereof - A protecting device for multi-motors driven by motor driving circuits for operating motors includes a comparison module, an operative logic module and a control module. The comparison module determines whether or not an abnormal over current occurs in the motors. The operative logic module receives a determination result of the comparison module and outputting a motor control signal to the motor driving circuit and a notice signal to the control module. If an over current occurs in the motor, the motor control signal outputted from the operative logic module will be a disable signal for stopping the operation of the motor driving circuit and the motor. The control module outputs a warning signal based on the notice signal to notify users about the operating status of the motor. Therefore, the present invention can prevent the motor driving circuit and the motor from being damaged by an over current.11-12-2009

Chih-Ming Chang, Jhongli City CN

Patent application numberDescriptionPublished
20090244414LIQUID CRYSTAL DISPLAY APPARATUS AND METHOD FOR IMPROVED PRECISION 2D/3D VIEWING WITH AN ADJUSTABLE BACKLIGHT UNIT - An liquid crystal method, system and method is provided to optimize the view-angle distribution characteristics of 2D/3D LCDs, wherein the photoactive layers, e.g., parallax, lenticular, etc, have their individual respective distances adjusted. The method also permits the adjustment of the relative prism vertex angles among the photoactive layers to further control the view-angle distribution of the light transmitted to the LDC display means. Moreover, the method, system and method provides for the enhanced, as modified by or in accordance with and as a function of both, scope and distance of human vision and vantage point in 2D/3D LCDs.10-01-2009

Chih-Ming Chang, Tainan City TW

Patent application numberDescriptionPublished
20090197364METHOD OF FABRICATING SUBSTRATE - A method of fabricating a substrate includes following steps. First, a metallic panel having a first surface and a second surface is provided. A first half-etching process is carried out to etch the first surface of the metallic panel to a first depth so that a first patterned metallic layer is formed on the first surface. Next, a first insulating material is deposited into gaps in the first patterned metallic layer to form a first insulator. Thereafter, a second half-etching process is carried out to etch the second surface of the metallic panel to a second depth and expose at least a portion of the first insulator so that a second patterned metallic layer is formed on the second surface. The first depth and the second depth together equal the thickness of the metallic panel.08-06-2009

Chih-Ming Chang, Taipei TW

Patent application numberDescriptionPublished
20080273015Dual function touch screen module for portable device and opeating method therefor - A dual function operating touch screen module which applies to portable devices and operating method therefor are provided. The dual function operating touch screen module includes a touch screen, a sensor, an instruction executing unit, and a cursor transforming unit. The operating method includes the steps of displaying an image according to a touch signal input from a touch screen; receiving the touch signal to calculate a touch location signal; performing a corresponding operating instruction based on the touch location signal; and triggering and transforming the touch location signal to a cursor track signal which corresponds to the operating instruction, and display the cursor track signal on an output image signal after the output image signal is selectively activated actively or passively.11-06-2008

Chih-Ming Chang, Hualien City TW

Patent application numberDescriptionPublished
20080256699Mounting base for fixing to swimming pool perimeter Mounting base for fixing to swimming pool perimeter - A mounting base includes two fixing plates movably connected to each other via a four-bar mechanism, which consist of four fixing arms and is controllable via an adjusting rod to reduce one diagonal thereof, so that the two fixing plates located at two opposite ends of the other diagonal of the four-bar mechanism are moved outward to firmly press against two opposite inner wall surfaces of a swimming pool gutter, enabling the mounting base to be conveniently and safely fixed to any desired point along a swimming pool perimeter without spoiling the swimming pool. A carrier plate is associated with the adjusting rod for a water activity facility to mount thereon. A second carrier plate perpendicular to the first carrier plate may be associated with the fixing plates via another two pivotally connected fixing arms, so that the mounting base is usable in two different directions.10-23-2008

Chih-Ming Chang, Hualien County TW

Chih-Ming Chang, Tu-Cheng TW

Patent application numberDescriptionPublished
20110254824ELECTRONIC DEVICE WITH DUAL DISPLAY SCREENS - An electronic device includes a liquid crystal display (LCD) screen, an electronic paper display (EPD) screen, storage, a switch module, and a CPU. The LCD screen is configured to display a primary user interface when the electronic device powers on. The EPD screen is configured to display predefined content stored in the storage set when the electronic device powers off. The switch module is configured to power the electronic device on or off in response to user input, and generate a corresponding control signal. The CPU is configured to register the control signal send by the switch module. When the control signal is the power off signal, the CPU directs the EPD screen to display the predefined content.10-20-2011

Chih-Ming Chang, Kaohsiung TW

Patent application numberDescriptionPublished
20120121406Series-Connected Fan Frame Module - A series-connected fan frame module includes a plurality of frames, an engaging assembly and an anti-rotation assembly. The frames are arranged in series. The engaging assembly is arranged on each of the frames to couple the frames in series. The anti-rotation assembly is arranged on each of the frames and comprises at least one position-fixing member and at least one blocking member arranged on portions of adjacent two of the frames where the adjacent two of the frames are coupled together. The at least one position-fixing member is engaged with the at least one blocking member to prevent the relative radial rotation between the adjacent two of the frames.05-17-2012