Abstract: An object of the present invention is to provide a display method capable of displaying all gray levels of an input image signal with reduced flicker, and a display apparatus using this method. The present invention provides a display method that allows a display apparatus to display gray levels represented by a first number of bits of an image signal inputted to a driver circuit that drives the display apparatus, when the first number of bits is larger than a second number of bits of gray-level data outputted from the driver circuit.

Abstract: A method for driving a liquid crystal panel that includes horizontal scan wires, data wires, pixel electrodes surrounded by the horizontal scan wires and the data wires; and switching elements connected to the pixel electrodes, wherein the switching elements are controlled by a gate selection signal and during a on-time period, the switching elements is turned on, and an image data signal output from the data wires is supplied to the pixel electrodes by the switching elements. The method includes: detecting a peripheral temperature of the liquid crystal panel; and controlling the gate selection signal so that when the detected temperature is within a normal temperature range, the on-time period is set to a first gate selection period, and that when the detected temperature is within a low temperature range, the on-time period is set to a second gate selection period longer than the first gate selection period.

Abstract: A primary object of the present invention is to provide a liquid crystal display device being capable of displaying an image with large color reappearance area and a genuine hue and chroma, while controlling a displacement of white chromaticity caused by changes of viewing angles. The device includes: a light source; a back light controlling a luminous intensity distribution from the light source; and a liquid crystal display panel controlling a transmission rate of light from the back light. The maximum intensity of a light emitting spectrum of the back light is in a range of 510 nm to 530 nm in a wavelength range of 500 nm to 550 nm, wherein the liquid crystal panel includes a red color filter transmitting red components, a green color filter transmitting green components and a blue color filter transmitting blue components, and a transmit spectrum of the green color filter includes a half value of a maximum transmitting rate of 500 nm to 590 nm in a wavelength range.

Abstract: In the case where a first bit number of a picture signal entered to a driver unit for driving an image display device is larger than a second bit number of display data outputted from the driver unit, a display method for displaying an image in such a gradation of the first bit number on the image display device is realized by that a first region and a second region are provided within an entire gradation region of the driver unit. In the first region, the FRC is carried out by defining the first frame number as one set so as to add pseudogradation. In the second region, the FRC is not carried out. The second region is assumed as such a gradation region that when the field angle of the image display device is deflected, a gradient of a gradation-to-luminance characteristic becomes steep.

Abstract: An object of the present invention is to provide a display method capable of displaying all gray levels of an input image signal with reduced flicker, and a display apparatus using this method. The present invention provides a display method that allows a display apparatus to display gray levels represented by a first number of bits of an image signal inputted to a driver circuit that drives the display apparatus, when the first number of bits is larger than a second number of bits of gray-level data outputted from the driver circuit.

Abstract: A method for driving a liquid crystal panel that includes horizontal scan wires, data wires, pixel electrodes surrounded by the horizontal scan wires and the data wires; and switching elements connected to the pixel electrodes, wherein the switching elements are controlled by a gate selection signal and during a on-time period, the switching elements is turned on, and an image data signal output from the data wires is supplied to the pixel electrodes by the switching elements. The method includes: detecting a peripheral temperature of the liquid crystal panel; and controlling the gate selection signal so that when the detected temperature is within a normal temperature range, the on-time period is set to a first gate selection period, and that when the detected temperature is within a low temperature range, the on-time period is set to a second gate selection period longer than the first gate selection period.

Abstract: In a 2H reverse driving method or the like as a driving method for a liquid crystal display, it is set that a time period from the time when the polarity of a data signal is reversed to the time when a gate selection signal is turned off should be equal to a period while a gate selection signal is in an ON period, and a period from the time when the gate selection signal is turned off to the time when the data signal is changed to a data output corresponding to a pixel selected by the gate selection signal is set equal to or shorter than a period from the time when the gate selection signal is turned off to the time when the polarity of the data signal is reversed.

Abstract: The liquid crystal display device has red, green, and blue LEDs, each emitting a different color light, as a light source. An acrylic lens is mounted on the emission surface of the LED to change angular distributions of light from the LED. The shape of the acrylic lens varies depending on the color of the LED. The angular distribution of emitting light thereby differs by the color of LED to cancel out wavelength dependency of transmittance at each viewing direction in a liquid crystal panel.

Abstract: A primary object of the present invention is to provide a liquid crystal display device being capable of displaying an image with large color reappearance area and a genuine hue and chroma, while controlling a displacement of white chromaticity caused by changes of viewing angles. The device includes: a light source; a back light controlling a luminous intensity distribution from the light source; and a liquid crystal display panel controlling a transmission rate of light from the back light. The maximum intensity of a light emitting spectrum of the back light is in a range of 510 nm to 530 nm in a wavelength range of 500 nm to 550 nm, wherein the liquid crystal panel includes a red color filter transmitting red components, a green color filter transmitting green components and a blue color filter transmitting blue components, and a transmit spectrum of the green color filter includes a half value of a maximum transmitting rate of 500 nm to 590 nm in a wavelength range.

Abstract: The liquid crystal display device has red, green, and blue LEDs, each emitting a different color light, as a light source. An acrylic lens is mounted on the emission surface of the LED to change angular distributions of light from the LED. The shape of the acrylic lens varies depending on the color of the LED. The angular distribution of emitting light thereby differs by the color of LED to cancel out wavelength dependency of transmittance at each viewing direction in a liquid crystal panel.

Abstract: With the prior art image-adjusting system for a liquid crystal display, flicker is adjusted by operator's visual examination and so human factors vary the potential-adjusting value applied to the common electrode. The invention provides an image-adjusting system and method free of this problem. The image-adjusting method starts with placing optical sensors opposite to a given location on a liquid crystal display. The output waveform from the optical sensors is observed on an oscilloscope in synchronism with the vertical synchronizing signal that is synchronized to odd frames or even frames. The potential applied to the common electrode of the liquid crystal display is shifted upward from the optimum potential to observe a first waveform. The potential on the common electrode is shifted downward from the optimum potential to observe a second waveform.

Abstract: The present invention is directed to a method of driving a liquid crystal display, where said liquid crystal display includes steps of: setting said central electric potential of said source signals and said central electric potential of said common signals, in such a manner as to compensate a reduction of said electric potential of a pixel electrode induced by said gate signals in a case of the gradation where said amplitude of said source signals is large, and setting said central electric potential of said source signals, in such a manner that said central electric potential of said source signals is higher than said central electric potential of said source signals compensating said reduction of the electric potential induced by said gate signals in case of the gradation where said amplitude of said source signals is small.

Abstract: The present invention is directed to a method of driving a liquid crystal display, where said liquid crystal display includes steps of: setting said central electric potential of said source signals and said central electric potential of said common signals, in such a manner as to compensate a reduction of said electric potential of a pixel electrode induced by said gate signals in a case of the gradation where said amplitude of said source signals is large, and setting said central electric potential of said source signals, in such a manner that said central electric potential of said source signals is higher than said central electric potential of said source signals compensating said reduction of the electric potential induced by said gate signals in case of the gradation where said amplitude of said source signals is small.

Abstract: With the prior art image-adjusting system for a liquid crystal display, flicker is adjusted by operator's visual examination and so human factors vary the potential-adjusting value applied to the common electrode. The invention provides an image-adjusting system and method free of this problem. The image-adjusting method starts with placing optical sensors opposite to a given location on a liquid crystal display. The output waveform from the optical sensors is observed on an oscilloscope in synchronism with the vertical synchronizing signal that is synchronized to odd frames or even frames. The potential applied to the common electrode of the liquid crystal display is shifted upward from the optimum potential to observe a first waveform. The potential on the common electrode is shifted downward from the optimum potential to observe a second waveform.

Abstract: A projection type display in which contrast of projected picture is improved without negatively affecting luminance of a projected picture. The projection type display comprises a main light bulb 3 wherein an illumination light flux 2 from a light source 1 is transmitted or scattered according to a display picture image formed by a control signal from a control circuit 9, and an auxiliary light bulb 17 wherein the illumination light flux 2 transmitted or scattered by the main light bulb 3 is transmitted or scattered according to the control signal from the control circuit 9. The light flux having transmitted through the auxiliary light bulb 17 is enlargedly projected by a projecting lens 7 via a diaphragm 6 condensed by a condensing lens 4, and is subjected to image-formation on a screen 8.

Abstract: An apparatus for ON-OFF inspection on a scattering-type liquid crystal display panel is provided which is of decreased size and is capable of easily inspecting the ON-OFF states of the liquid crystal display panel by assuring enhanced visuality of an image displayed for inspection. The inspection apparatus includes: support means for supporting the liquid crystal display panel; signal applying means for applying an electric signal to a pixel of the liquid crystal display panel; illumination means for illuminating the liquid crystal display panel, the illumination means comprising a flat photoconductive member and a light source mounted on a side wall of the photoconductive member; a light-absorptive layer disposed on one side of the photoconductive member with a gap therebetween; and means for making the other side of the photoconductive member come into close contact with the liquid crystal display panel.