Abstract: The method includes applying a gray level current corresponding to a display gray level to each of pixel circuits for a first period, applying a display current based on the gray level current to the self-luminescent elements during a second period succeeding the first period to display corresponding the display gray level, and applying a precharge current to the self-luminescent device during a third period before the first period on the basis of a predetermined first condition.
Abstract: In an OCB liquid crystal display device, a gradation voltage of a video signal is set to be lower than a black display optimum voltage, and a reverse transition prevention voltage is set to be higher than the black display optimum voltage and to be lower than a maximum applied voltage, and as the gradation voltage of the video signal becomes low, the reverse transition prevention voltage is set to be high.
Abstract: [PROBLEMS] To reduce the blue tone in the black display of the OCB liquid crystal display device. [MEANS FOR SOLVING THE PROBLEMS] A liquid crystal display cell (11) includes: an opposing substrate (130) having an opposing electrode (Ecom); an array substrate (120) having a pixel electrode Dpix for each color; a liquid crystal layer (140) arranged in a bend arrangement located between the opposing substrate (120) and the array substrate (120); and red, green, and blue filter layers arranged on one of the substrates.
Abstract: An array substrate includes: a plurality of signal line groups, each of which is a set of a plurality of signal lines; a plurality of photoelectric conversion elements, each of which is connected to the signal lines on a pixel-to-pixel basis; a plurality of DA conversion circuits which are provided respectively corresponding to the signal line groups; a plurality of AD conversion circuits which are provided respectively corresponded to the signal line groups; and a selection circuit selecting any one of a connection of the DA conversion circuits to the respective signal line groups, and a connection of the AD conversion circuits to the respective signal line groups.
Abstract: Occurrence of insufficient writing to a liquid crystal display element is prevented in the liquid crystal display device which causes a backlight to illuminate only while the liquid crystal display element responds to the display data.
Abstract: An anti-theft box which displays an article in a manner which allows a consumer to handle the article without removing it from the box, and which deters theft of the article and/or box is disclosed. The anti-theft box includes a base for supporting the article, and a cover which engages and is lockable with the base. The article is visible through the cover, and an opening in the cover allows a consumer to touch the article without opening the cover or removing the article. In addition, the base includes a locking mechanism in order to normally lock the cover to the base so that it cannot be readily disengaged by the consumer. A retailer can readily engage the base, for example with a key plate, in order to easily open the cover. In one embodiment, an EAS marker is also supported within the base, preferably hidden from the consumer.
Type:
Grant
Filed:
August 30, 2002
Date of Patent:
June 12, 2007
Assignee:
Display Technologies, Inc.
Inventors:
Jeffrey A. Feibelman, William A. McAuley
Abstract: An EL display apparatus in which pixels having EL elements are formed in a matrix, has a constant current circuit which generates a predetermined constant current; and a gradation voltage circuit which generates a gradation voltage; wherein the constant current generated by the constant current circuit is supplied to the pixels via a source signal line; and the gradation voltage generated by the gradation voltage circuit is supplied to the pixels via the source signal line.
Abstract: An electroluminescent device comprising: a first charge carrier injecting layer for injecting positive charge carriers; a second charge carrier injecting layer for injecting negative charge carriers; and a light-emissive layer located between the charge carrier injecting layers and comprising a mixture of: a first component for accepting positive charge carriers from the first charge carrier injecting layer; a second component for accepting negative charge carriers from the second charge carrier injecting layer; and a third, organic light-emissive component for generating light as a result of combination of charge carriers from the first and second components; at least one of the first, second and third components forming a type II semiconductor interface with another of the first, second and third components.
Type:
Grant
Filed:
April 22, 2005
Date of Patent:
June 5, 2007
Assignee:
Cambridge Display Technology Ltd.
Inventors:
Jeremy Henley Burroughes, Richard Henry Friend, Christopher John Bright, David John Lacey, Peter Devine
Abstract: An anti-theft security tag includes an engagement member having a first and second end securable within a housing by a crimping member for attachment to an article. In one embodiment, the housing supports an electronic article surveillance marker and may include a channel for receiving and securing at least one self crimping member. The self crimping member is sized to receive one end of the engagement member. The one or more crimping members may be disc shaped, including a plurality of fingers for securing one end of the engagement member, or may have a variety of other shapes. The self crimping members allow the engagement member to be moved downward, but not upward, so as to make the engagement loop smaller. In another embodiment, the crimping member is manual and a slot is disposed within the housing in alignment with the at least one crimping member, and is sized to receive a crimping tool to crimp the member and secure the line to the article within the housing.
Abstract: A lighting unit of the present invention includes a light guiding plate (3), a light source (2) disposed so as to face an end face of the light guiding plate, a reflector (4) disposed so as to surround the light source, a housing (6) disposed so as to have a light guiding plate-retaining portion (6a) that retains at least the reflector and is partially interposed between the light source and the end face of the light guiding plate so as to retain the light guiding plate, and a reflecting sheet (5) disposed on one of principal surfaces of the light guiding plate, the lighting unit being configured such that light from the light source enter into the end face of the light guiding plate and goes out from another principal surface of the light guiding plate. The reflecting sheet is disposed so that an edge portion (5a) is bent so as to be positioned between the light guiding plate-retaining portion of the housing and the end face of the light guiding plate.
Abstract: An optical device comprising an anode, a cathode, an organic semiconducting material between the anode and the cathode, and an electron transport layer between the cathode and the organic semiconducting material wherein the organic semiconducting material comprises sulfur and the electron transport layer containing barium.
Abstract: In order to make a boundary inconspicuous, which is located between an image area which displays an image by translucent pixels and a dummy area which always displays a white color by reflection pixels, a size ratio of transparent areas in color filters of the reflection pixels with respect to reflection areas therein is made larger than a size ratio of transparent areas in color filters of the translucent pixels with respect to reflection areas therein. In such a way, brightness of the display is balanced by adjusting quantities of transmission light through the transparent areas of the reflection pixels with respect to quantities of reflection light generated unexpectedly on transmission areas of the translucent pixels. Then, degrees of whiteness in the translucent pixels and the reflection pixels are approximated to each other.
Abstract: In a semiconductor circuit of a current output type, when display is performed by plural semiconductor circuit in one display panel, luminance unevenness for each block with a different semiconductor circuit occurs due to fluctuation in the semiconductor circuits. In current output stages 14a and 14b, current mirror circuits are constituted at both ends of a chip, and a reference current to be a reference of gradation display is supplied from both the ends. Moreover, by increasing a resistance value of a gate line of the current mirror circuit of distributing a current to each output, deviation of a transistor threshold value in the chip was compensated for, and output currents at left and right ends were matched.
Abstract: In a driver circuit of a display device, an electric potential difference between high-level power supply voltage VDD and low-level power supply voltage VSS2 in shift registers and buffers is set smaller than an electric potential difference between high-level voltage VDD and low-level voltage VSS of enable signals OE in order to prevent increase in voltage stress on each transistor and concurrently to make larger an electric potential difference between high-level voltage and low-level voltage of output signals.
Abstract: A display device, comprising: display elements formed in vicinity of intersections of signal lines and scan lines aligned vertically and horizontally; image pickup units provided corresponding to each of the display elements by at least one piece, each converting incident radiation at predetermined range into an electric signal; electric charge accumulators which accumulate the electric charge in accordance with the electric signal converted by the image pickup units; and signal processing unit which generates digital image data corresponding to image picked up by the image pickup unit, based on accumulated electric charge of the electric charge accumulator for each of a plurality of image pickup conditions.
Abstract: A display error occurs upon contention between writing of pixel data in a GRAM and reading of pixel data representing a scanning line including pixels which correspond to the pixel data above. Pixel data corresponding to pixels representing a scnaning line sotred in a latch circuit is displayed on a display panel, and when contention occurs between writing of pixel data in a GRAM and reading of pixel data corresponding to pixels representing a scanning line to the latch circuit from the GRAM, a controller delays reading of the pixel data corresponding to the pixels representing the scanning line and controls so as to perform reading of the pixel data corresponding to the pixels representing the scanning line to the latch circuit from the GRAM once again.