Patent application number | Description | Published |
20120314175 | COF, COF CARRIER TAPE AND DRIVE CIRCUIT OF LIQUID CRYSTAL TELEVISION - A COF tape is formed by orderly connecting several COFs and a carrier connected with said COF tape. The appearance of said COF is a trapezoid consisting of two paralleled wiring edges and two unparalleled side edges. The longer wiring edge of one COF and the shorter wiring edge of the other COF between the two adjacent COFs are connected and lie in a same straight line; the shorter wiring edges and the longer wiring edges of the other two COFs also lie in a same straight line. The disclosure also discloses a COF and a drive circuit for liquid crystal display television. The COF of the disclosure saves materials; the carrier-tape type semiconductor device with the COF of the disclosure is able to increase the quantity of COF on the carrier tape of specific length, so that the cost can be lowered to a large extent. | 12-13-2012 |
20120320003 | COF, COF CARRIER TAPE AND DRIVE CIRCUIT OF LIQUID CRYSTAL TELEVISION - The present disclosure discloses a COF (Chip On Film), the plane shape of which is a non-orthogonal parallelogram. The present disclosure further discloses a COF carrier tape, which includes a COF tape formed by orderly connecting several COF and a carrier connected with said COF tape. The plane shape of said COF is a non-orthogonal parallelogram. Said COF includes two paralleled wiring edges, and the two adjacent wiring edges of said COF are mutually connected. The present disclosure also discloses a drive circuit for liquid crystal display television. With the COF wiring number increased, the wiring intervals of the present disclosure remain unchanged. When the wiring number of COF are no longer increased, the lengths of the wiring edges can be shortened if the intervals remain unchanged; as a result, the total area of COF can reduced so that the cost can be effectively lowered. | 12-20-2012 |
20130038638 | CONTROL CIRCUIT AND LCD MODULE AND LCD USING THE SAME - A control circuit includes a power supply, a control IC, a liquid crystal panel, a driving integrated chip arranged between the control IC and the liquid crystal panel, and a number of voltage adjusting sub-circuits. The driving integrated chip includes a plurality of output ports for outputting a plurality of driving voltages respectively. Each voltage adjusting sub-circuit is arranged between the corresponding output port of the driving integrated chip and the liquid crystal panel for adjusting an initial value the voltage outputted from the corresponding output port before the driving voltage is transferred to the liquid crystal panel. With the voltage adjusting sub-circuits, the driving voltages received by the liquid crystal panel have the same value to avoid the color deviation of the images displayed in the liquid crystal panel. This improves the display effect of the liquid crystal panel under without increasing the layout area. | 02-14-2013 |
20130057461 | TANGENT ANGLE CIRCUIT IN AN LCD DRIVING SYSTEM AND LCD DRIVING SYSTEM - A tangent angle circuit is connected to a plurality of scan line driving circuits and comprises: a charging module integrated on a control board to receive input of a direct current (DC) driving voltage and output a cut-in voltage to charge the scan line driving circuits; and a plurality of discharging modules integrated on the scan line driving circuits respectively to control the corresponding scan line driving circuits to discharge. In the present invention, by distributing the discharging modules on each of the scan line driving circuits respectively, the burden of load discharged charges on the discharging modules is reduced to avoid occurrence of an overhigh temperature; and the discharging modules are spatially separated, which is further favorable for reducing the temperature, releasing the space of the control board and reducing the area of the control board. | 03-07-2013 |
20130057568 | LCD OVERDRIVING METHOD AND DEVICE AND LCD - A liquid crystal display (LCD) overdriving method, an LCD overdriving device and an LCD are disclosed. The LCD overdriving method improves displaying quality and a response speed of the LCD comprising the following steps of: receiving by a scaling controller, a previous frame image grayscale value stored into a frame buffer of the scaling controller; receiving a next frame image grayscale value by the scaling controller and sending the previous frame image grayscale value and the next frame image grayscale value to a time schedule controller so that the time schedule controller looks up a lookup table and outputs an overdriving grayscale value. The present disclosure can effectively save the cost by eliminating the need of providing an additional frame buffer in the time schedule controller. Furthermore, as image grayscale values of only two pixels need to be stored in the time schedule controller, it can save more memory spaces. | 03-07-2013 |
20130063912 | COF PACKAGING METHOD AND STRUCTURE FOR LCD DRIVER CHIPS - A COF packaging method and structure for LCD driver chips, the packaging structure comprises a substrate tape and a plurality of COF packaging units arranged consecutively along a direction the substrate tape is moved. Each of the packaging units includes a LCD driver chip, and a first lead and a second lead electrically connected to the LCD driver chip and distributed along two sides of the LCD driver chip. The LCD driver chip of each of the packaging units is parallel to the moving direction of the substrate tape, the first lead and the second lead of each of the packaging units are extended along a width of the substrate tape. By the method, the number and intervals of the leads are not limited by the width dimension of the substrate tape, in order to suit the requirements of large-sized liquid crystal panels. | 03-14-2013 |
20130069553 | LED DIMMING DRIVE DEVICE, METHOD AND LCD - A light emitting diode (LED) dimming drive device, an LED dimming drive method and a liquid crystal display (LCD) are disclosed. The LED dimming drive device comprises a plurality of dimming control circuits each comprising one dimmer switch and a delay setting circuit for setting a different delay time for each dimming control circuits. Each of the dimming control circuits further comprises a clock delay circuit for receiving a pulse width modulation (PWM) signal, timing according to the delay time, and outputting the PWM signal to the dimmer switch when the delay time expires. Different delay times can be used to control the output of PWM signals and further control the on or off of the dimmer switches. This can avoid the noises or electromagnetic (EM) interferences occurred by a large amount of energy transmitted into the LED paths when the dimmer switches is turned on. | 03-21-2013 |
20130069925 | TANGENT ANGLE CIRCUIT IN AN LCD DRIVING SYSTEM AND LCD DRIVING SYSTEM - A tangent angle circuit in a liquid crystal display (LCD) driving system comprises: a charging module integrated on a control board for receiving input of a direct current (DC) driving voltage and outputting a cut-in voltage to charge a plurality of scan line driving circuits; a plurality of discharging modules integrated on the scan line driving circuits respectively for controlling the corresponding scan line driving circuits to discharge; and a plurality of external regulating modules externally connected to the scan line driving circuits respectively and connected to the corresponding discharging modules to regulate the discharging modules so as to control a discharging rate of the scan line driving circuits. In the present invention, a discharge slope of the corresponding scan line driving circuit can be regulated; thereby, the tangent angle circuit is suitable for use with scan line driving circuits having different parasitic capacitors. | 03-21-2013 |
20130100168 | OVERDRIVE CONTROLLING SYSTEM FOR LIQUID CRYSTAL DISPLAY - An overdrive controlling system for a liquid crystal device includes an image scaling device for storing a current frame data and a preceding frame data, and a time sequence controlling panel. The time sequence controlling panel includes an overdrive controller, a first storage device connected to the overdrive controller for storing a lookup table, and a time sequence controlling circuit connected to the overdrive controller. The time sequence controlling panel further includes two low-voltage differential signaling receivers respectively connected to the overdrive controller. The low-voltage differential signaling receivers are further connected to the image scaling device for receiving the current and preceding frame data and outputting the received frame data to the overdrive controller. The overdrive controller compares the current frame data and the preceding frame data with the lookup table to obtain a compensated image data, and outputs the compensated image data to the time sequence controlling circuit. | 04-25-2013 |
20130114226 | COF Packaging Unit and COF Packaging Tape - The invention discloses a COF packaging unit and a COF packaging tape. The COF packaging unit comprises COF baseband(s), IC Die(s) packaged on the COF baseband(s), and input end wires and output end wires connected with the IC Die(s); the input end wires and the output end wires are respectively provided with input terminals and output terminals at two edges of the COF baseband. In the invention, because the input terminals and the output terminals are pitched along the edges of the COF baseband, the length of the single COF packaging unit is set in accordance with the pitching requirement of the input end wires and the output end wires, so that the COF baseband can have sufficient area for wiring, to adapt to the requirement of large LCD panels. Thus, resources are reasonably integrated and used, equipment utilization rate is increased, material purchasing cost is saved, and economic benefits are increased. | 05-09-2013 |
20130120344 | OUTPUT COMPENSATION CIRCUIT AND OUTPUT COMPENSATION METHOD FOR LCD DATA DRIVE IC, AND LCD - An output compensation circuit and an output compensation method for an LCD data drive IC as well as an LCD comprising the same are disclosed. The output compensation circuit comprises a data drive IC, a plurality of first switch units and a plurality of delay control units. A plurality of output channels of the data drive IC each are connected with a corresponding row of pixel electrodes on a glass substrate via a data line respectively to output a charging signal. Each of the first switch units control the corresponding output channel according to a delay control signal generated by the corresponding delay control unit. Each of the delay control units is configured to generate the delay control signal-used to control the first switch unit to be turned on after a predetermined delay so that the charging time is the same for all the pixel electrodes. | 05-16-2013 |