Toshiba Matsushita Display Technology Co., Ltd. Patent applications |
Patent application number | Title | Published |
20100277401 | EL DISPLAY PANEL DRIVING METHOD - In order to charge and discharge parasitic capacitance of a source signal line sufficiently and program a predetermined current value into a pixel transistor, it is necessary to output a relatively large current from the source driver circuit. However, if such a large current is passed through the source signal line, the value of this current is programmed into the pixel, causing a larger than desired current to flow through an EL element. For example, if a 10 times larger current is used for programming, a 10 times larger current flows through the EL element, and thus the EL element illuminates 10 times more brightly. To obtain predetermined emission brightness, the time during which the current flows through the EL element can be reduced to 1/10 of one frame (1 F). This way, the parasitic capacitance of the source signal line can be charged and discharged sufficiently and the predetermined emission brightness can be obtained. | 11-04-2010 |
20100265277 | DRIVE METHOD OF EL DISPLAY APPARATUS - To provide a drive method capable of maintaining gradation display performance regardless of screen display brightness. | 10-21-2010 |
20100014026 | BACKLIGHT UNIT, METHOD FOR ASSEMBLING THE SAME AND LIQUID CRYSTAL DISPLAY DEVICE USING THE BACKLIGHT UNIT - A back light unit includes a light guide plate having a rectangle shape with first and second edges and a light source having a light element to emit light to a first edge of the light guide plate. The light guide plate emits the incident light from the light source to a liquid crystal display panel as a flat light source. An elastic frame is integrally formed with first and second frame elements in a rectangle shape so as to surround the light guide plate. The light source includes a metal frame clipped by a clip shape implemented provided in the first frame element. The first edge facing the second edge of the light guide plate is fitted to the metal frame. The second edge of the light guide plate is fitted to a second frame element having a clip portion for clipping the light guide plate. | 01-21-2010 |
20090284515 | EL DISPLAY DEVICE - There is provided an EL display device having a plurality of pixels arranged in a matrix pattern, wherein the pixels each include an EL element and a drive transistor configured to define a current to be supplied to the EL element, and switches configured to supply a reset power to the drive transistors of the respective pixels are provided one each for a row of the pixels arranged in the matrix pattern. | 11-19-2009 |
20090231534 | LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device includes an array substrate having a power supply line for supplying a power voltage to a counter electrode of a counter substrate. The power supply line connects a power pad arranged at a corner of the array substrate to a common line which is arranged between an active area and a seal portion, crossing the seal portion provided at a peripheral portion of the array substrate so as to surround the active area. The array substrate further includes at least two block elements with a convex shape for blocking the flowing out of the sealing element to the active area. The block elements are arranged so as to cross the power supply line and face the power supply pad. A gap between the block elements and the counter substrate is smaller than a gap between the slit formed by the adjacent block elements and the counter substrate. | 09-17-2009 |
20090201231 | EL DISPLAY DEVICE - An EL display device includes: a source driver circuit to output a video signal voltage; a gate driver circuit to select a pixel in a display screen; a first capacitor to maintain the video signal voltage; and a drive transistor to supply current to an EL element of a pixel. The video signal voltage is applied to the drive transistor to perform a predetermined operation, and written into the first capacitor. The video signal voltage maintained in the first capacitor is used to perform an offset cancel operation. | 08-13-2009 |
20090184984 | DRIVE METHOD OF EL DISPLAY APPARATUS - A drive method of an EL display apparatus that includes a display screen in which pixels each of which includes an EL element are provided in a form of a matrix. The drive method includes: aggregating or processing by use of a histogram an image signal applied to the EL display apparatus, and controlling a current flowing in the display panel according to at least one of a result of the aggregating the image signal or a result of the processing by use of the histogram. | 07-23-2009 |
20090128749 | LIQUID CRYSTAL DISPLAY INCLUDING CIRCULAR OR POLYGONAL POLARIZING PLATES EACH WHOSE ABSORPTION AND TRANSMISSION AXES HAVE IMPROVED PRECISION IN DIRECTION - A peripheral part of a substrate | 05-21-2009 |
20090109142 | EL DISPLAY DEVICE - A switch being turned off using an output open function of a power supply circuit, a cathode voltage Vss is not transmitted, an output terminal takes on a high impedance condition and, a probing being done into a pad of the cathode voltage Vss output terminal with a probe, an ammeter which measures a current is disposed between the probe | 04-30-2009 |
20090086153 | STRIP-SHAPED BASE METAL FOR LIQUID CELL, MULTI-FACE CHAMFERED BASE MATERIAL FOR LIQUID CELL, SUBSTRATE FOR ARRAY SUBSTRATE, AND LIQUID CELL MANUFACTURING METHOD - Shield patterns which are formed in a liquid crystal cell region on a substrate for an array substrate, disposed along a border with another adjacent liquid crystal cell region, outside a predetermined control wiring pattern, and are for shielding the liquid crystal cell region, and a connecting wiring line connecting the shield patterns opposed to each other across a border to which at least a pair of liquid crystal cell regions adjacent to each other are adjacent are included. | 04-02-2009 |
20090073106 | LIQUID CRYSTAL DISPLAY APPARATUS - In a liquid crystal display apparatus of an OCB type, a frame inversion drive is carried out to invert the polarities of a white level voltage and a black level voltage in conformity with the polarity of an opposed voltage on the frame-to-frame basis, so that the amplitudes of the black level voltage and the white level voltage decrease with rise in environmental temperature. | 03-19-2009 |
20090015536 | LIQUID CRYSTAL DISPLAY APPARATUS - A display area in a liquid crystal display apparatus is divided into five blocks extending in the lateral direction, is controlled to have a black writing period, a video writing period and a video holding period in each block in this order, and is controlled to delay the video writing period of the k | 01-15-2009 |
20090002310 | LIQUID CRYSTAL DISPLAY APPARATUS - A liquid crystal display apparatus in an embodiment of the invention, in which each frame period is divided into a first period for writing the non-video signals, a second period for writing the video signals to the respective pixels, and a third period for maintaining the video signals in the respective pixels; and in which a control unit (1) calculates a backlight luminance value and gamma conversion values based on the distribution of the gradation values prior to the second period, (2) gamma-converts the input video signals based on the gamma conversion values and writes gamma-converted video signals into the respective pixels during the second period, (3) causes the backlight to emit light based on the backlight luminance value during the third period. | 01-01-2009 |
20080309838 | LIQUID CRYSTAL DISPLAY DEVICE - The present invention regarding a liquid crystal display device aims to further prevent generation of low-temperature bubbles in a uniform cell gap and to further improve strength against pressure applied to a glass surface while saving a production cost. A liquid crystal display device according to the present invention includes multiple spacers arranged on a liquid crystal layer side of an array substrate. The multiple spacers include: a first spacer arranged in a part of an insulating layer having no contact hole formed thereon; and a second spacer arranged inside of the contact hole. The contact hole is provided on the insulating layer and connects a switching element to either a corresponding pixel electrode or a corresponding auxiliary capacitive layer. | 12-18-2008 |
20080303786 | DISPLAY DEVICE - An object of the present invention is to achieve an advanced input operation without complicating image processing. A display device of the present invention includes a display unit, an optical input unit, and an image processor. The display unit displays an image on a display screen. The optical input unit captures an image of an object approaching the display screen. The image processor detects that the object comes into contact with the display screen on the basis of a captured image captured by the optical input unit, and then performs image processing to obtain the position coordinates of the object. In the display device, the image processor divides the captured image into a plurality of regions, and performs the image processing on each of the divided regions. | 12-11-2008 |
20080297689 | LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device which prevents a reflecting sheet from contacting the electrically continuing part of a flexible print wiring board (FPC) is disclosed. In the liquid crystal display device furnished with a light guiding plate | 12-04-2008 |
20080291382 | LIQUID CRYSTAL DISPLAY DEVICE - Structural objects are disposed in a peripheral region in positions opposed to spacers. In this way, a substrate surface of a counter substrate in the peripheral region is gently inclined in a direction away from a liquid crystal layer. In this way, it is possible to prevent unevenness in display attributable to a difference in a cell gap between a display region and the peripheral region. | 11-27-2008 |
20080252837 | LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF - A liquid crystal display device includes an array substrate, terminal electrodes formed on the array substrate, an anisotropic conductive film, a semiconductor device mounted via the anisotropic conductive film on the array substrate and a dummy pattern formed on the array substrate as facing the anisotropic conductive film. A manufacturing method of the liquid crystal display device includes forming the terminal electrodes and dummy pattern on the array substrate, temporarily pressure-bonding the anisotropic conductive film onto the terminal electrodes and dummy pattern and mounting the semiconductor device on the anisotropic conductive film through thermal compression bond. | 10-16-2008 |
20080252804 | LIQUID CRYSTAL DISPLAY DEVICE - In a multi-gap liquid crystal display device, a capacity of a storage capacitor (Cst) in a transmission region is set to be smaller than that of a storage capacitor (Csr) in a reflection region (Cst10-16-2008 | |
20080252617 | DISPLAY APPARATUS WITH OPTICAL INPUT FUNCTION - In making a contact determination between an object and a display screen, a display apparatus of the present invention is capable of adjusting a region on which to make a contact determination in response to the displayed image in a liquid crystal panel, so that the influence by the displayed image can be suppressed. Moreover, for simplifying the contact determination process, the display apparatus sets solid a region in the picked-up image that is not a target of the contact determination, with a predetermined gradation value. | 10-16-2008 |
20080246740 | DISPLAY DEVICE WITH OPTICAL INPUT FUNCTION, IMAGE MANIPULATION METHOD, AND IMAGE MANIPULATION PROGRAM - Provided are a display device with an optical input function, an image manipulation method, and an image manipulation program. Shape information on an object adjacent to a display unit is detected. A function indicated by an icon which corresponds to contact coordinates of the object is assigned to the shape information. This makes it possible for a user to assign dedicated functions respectively to, for example, a thumb and a little finger. Hence, a user-friendly user interface can be provided. | 10-09-2008 |
20080218668 | LIQUID CRYSTAL DISPLAY DEVICE CAPABLE OF PREVENTING REFLECTANCE AND WHITE BALANCE VALUE FROM SHIFTING - In the liquid crystal display device, a transparent area is formed in a part of the color filter layer which opposes the reflective electrode. A part of the transparent area opposes a part of the structure formed to make liquid crystal molecules incline. The structure and the transparent area are configured to keep a ratio constant, the ratio being a ratio between a size of the transparent area's part opposing the structure's part and a size of the rest of the transparent area. | 09-11-2008 |
20080218667 | LIQUID CRYSTAL DISPLAY DEVICE CAPABLE OF MAKING BOUNDARY OF DISPLAY AREA AND PICTURE FRAME AREA UNREMARKABLE - In the liquid crystal display device, the overcoat layer enters the area where a color filter layer is not formed. The opposing substrate when the overcoat layer is formed is thin. This makes the difference between the cell-gap length in the display area and the cell-gap length in the picture frame area become small. | 09-11-2008 |
20080198124 | LIQUID CRYSTAL DISPLAY APPARATUS - There is provided an liquid crystal display apparatus configured to invert a pixel voltage and a common voltage on a frame to frame basis while setting a transition voltage Vt in such a manner that the polarity of the pixel voltage to be applied to a pixel electrode of each display pixel and the polarity of the common voltage to be applied to a common electrode of a common substrate are differentiated. | 08-21-2008 |