4085 results about "Flat panel display" patented technology

We have discovered that adding H₂ to a precursor gas composition including SiH₄, NH₃, and N₂ is effective at improving the wet etch rate and the wet etch rate uniformity across the substrate surface of a-SiN_x:H films which are deposited on a substrate by PECVD. Wet etch rate is an indication of film density. Typically, the lower the wet etch rate, the denser the film. The addition of H₂ to the SiH₄/NH₃/N₂ precursor gas composition did not significantly increase the variation in deposited film thickness across the surface of the substrate. The a-SiN_x:H films described herein are particularly useful as TFT gate dielectrics in the production of flat panel displays. The uniformity of the film across the substrate enables the production of flat panel displays having surface areas of 25,000 cm² and larger.

The invention provides an organic light emitting diode active driving system with current feedback, thereby a driving current for organic light emitting diode is not affected by variation of characteristic parameters of thin film transistor under an active driving mode. The active driving system in accordance with the invention includes a transistor and a current comparator for driving an organic light emitting diode. The transistor has two current carrying electrodes respectively connected to a cathode of the organic light emitting diode and ground, and a gate controlled by a data signal. The current comparator has two input terminals respectively receive a reference current with predetermined value and a driving current flowing through the organic light emitting diode. The current comparator compares the reference current and the driving current, and then outputs a voltage to the gate of the transistor in response to the comparison result so as to make the value of the driving current equal to that of the reference current. Therefore, the active driving system for organic light emitting diode array or flat panel display in accordance with the invention can achieve a desirable light emission uniformity.

The present invention generally provides a method for processing a surface of a substrate in a physical vapor deposition (PVD) chamber that has a sputtering target that has separately biasable sections, regions or zones to improve the deposition uniformity. In general, aspects of the present invention can be used for flat panel display processing, semiconductor processing, solar cell processing, or any other substrate processing. In one aspect, each of the target sections of the multizone target assembly are biased at a different cathodic biases by use of one or more DC or RF power sources. In one aspect, each of the target sections of the multizone target assembly are biased at a different cathodic biases by use of one power source and one or more resistive, capacitive and/or inductive elements. In one aspect, the processing chamber contains a multizone target assembly that has one or more ports that are adapted deliver a processing gas to the processing region of the PVD chamber. In one aspect, the processing chamber contains a multizone target assembly that has one or more magnetron assemblies positioned adjacent to one or more of the target sections.

The present invention describes a method and apparatus for measuring the voltage and current characteristics of the OLED pixel as it ages and correlating the measured data to the decrease in quantum efficiency and changes in OLED impedance over the life of the OLED, so that corrections can be made to the image drive system to prevent image sticking and color point drift. The method and apparatus of the present invention do not require any additional circuitry or changes in the display design. The circuitry of the present invention is implemented in the display driver integrated circuit (IC) chips. The basis of the invention is the luminance-current-voltage (LIV) curves which characterize the OLED materials over their life time. A series of these curves are stored in memory representing a OLED material at various ages. The apparatus of the present invention is used to measure driver voltages and currents for a pixel having an OLED, which measurements are then used to extract the voltage current curve for the OLED at any point in time. The extracted curve is compared to the aging curves stored in memory to determine the aging curve that best describes the measured present voltage current characteristic of the pixel. That aging curve is used to drive the pixel.

The present invention generally provides an apparatus and method for selectively forming a metallized feature, such as an electrical interconnect feature, on a electrically insulating surface of a substrate. The present invention also provides a method of forming a mechanically robust, adherent, oxidation resistant conductive layer selectively over either a defined pattern or as a conformal blanket film. Embodiments of the invention also generally provide a new chemistry, process, and apparatus to provide discrete or blanket electrochemically or electrolessly platable ruthenium or ruthenium dioxide containing adhesion and initiation layers. In general, aspects of the present invention can be used for flat panel display processing, semiconductor processing, solar cell device processing, or any other substrate processing, being particularly well suited for the application of stable adherent coating on glass as well as flexible plastic substrates. This invention may be especially useful for the formation of electrical interconnects on the surface of flat panel display or solar cell type substrates where the line sizes are generally larger than semiconductor devices or where the formed feature are not generally as dense.

We describe a system of electronically active inks which may include electronically addressable contrast media, conductors, insulators, resistors, semiconductive materials, magnetic materials, spin materials, piezoelectric materials, optoelectronic, thermoelectric or radio frequency materials. We further describe a printing system capable of laying down said materials in a definite pattern. Such a system may be used for instance to: print a flat panel display complete with onboard drive logic; print a working logic circuit onto any of a large class of substrates; print an electrostatic or piezoelectric motor with onboard logic and feedback or print a working radio transmitter or receiver.

This invention relates to flexible, transparent and conductive coatings and films formed using single wall carbon nanotubes and polymer binders. Preferably, coatings and films are formed from carbon nanotubes (CNT) applied to transparent substrates forming one or multiple conductive layers at nanometer level of thickness. Polymer binders are applied to the CNT network coating having an open structure to provide protection through infiltration. This provides for the enhancement of properties such as moisture resistance, thermal resistance, abrasion resistance and interfacial adhesion. Polymers may be thermoplastics or thermosets, or any combination of both. Polymers may also be insulative or inherently electrical conductive, or any combination of both. Polymers may comprise single or multiple layers as a basecoat underneath a CNT coating, or a topcoat above a CNT coating, or combination of the basecoat and the topcoat forming a sandwich structure. Binder coating thickness can be adjusted by changing binder concentration, coating speed and/or other process conditions. Resulting films and articles can be used as transparent conductors for flat panel display, touch screen and other electronic devices.

A system and method are disclosed that determines the location of an object touching a display screen. The system and method modifies already existing display technology, including using the underlying structure of many types of existing displays as the touch detecting structure. The systems and methods are applicable to virtually all LCD and LCD-like displays, including emissive displays (OLED, PLED, quantum dot displays, etc.), electronic paper, and others.

A system and method for using cameras to download data to cell phones or other devices as an alternative to CDMA/GPRS, BlueTooth, Infrared or cable connections. The data is encoded as a sequence of images such as 2D bar codes, which can be displayed in any flat panel display, acquired by a camera, and decoded by software embedded in the device. The decoded data is written to a file. The system and method meet the following challenges: (1) To encode arbitrary data as a sequence of images. (2) To process captured images under various lighting variations and perspective distortions while maintaining real time performance. (3) To decode the processed images robustly even when partial data is lost.

The present technique provides a system and method for automatically switching viewing orientations of a display in response to physical rotation of the display. The display is rotatably coupled to a base structure via a rotatable mechanism, which has one or more angular switches/sensors that sense the physical orientation of the display and trigger a change in the viewing orientation of the display. The display may be a stand-alone flat-panel display or it may be incorporated into a portable electronic/computing devices, such as a tablet computer. Moreover, the base structure may embody a display support, a port replicator, a docking station, or any other suitable structure having a rotational adjustment mechanism.

The invention relates to light transmissive, transflective, or reflective flat panel display devices and, more specifically, to light emissive flat panel displays constructed from high performance electrowetting light valve (ELV) devices (10a-g). An array of ELV devices (10a-g) is mounted on or adjacent to a backlight (11), employing a reflector (13) allowing for improved transmission. The backlight (11) may be partially diffusely reflective or translucent as to also allow for creation of a transflective display panel.

A system of electronically active inks is described which may include electronically addressable contrast media, conductors, insulators, resistors, semiconductive materials, magnetic materials, spin materials, piezoelectric materials, optoelectronic, thermoelectric or radio frequency materials. We further describe a printing system capable of laying down said materials in a definite pattern. Such a system may be used for instance to: print a flat panel display complete with onboard drive logic; print a working logic circuit onto any of a large class of substrates; print an electrostatic or piezoelectric motor with onboard logic and feedback or print a working radio transmitter or receiver.

The mirror of the present invention provides a new device and method for generating a “reflection” of an object that may be processed before display. The invention comprises an image-capture system, an image-processor and a flat-panel display. By this combination, the invention is capable of acquiring the image of a subject in front of the display by passive means not requiring transmitters or reflectors on the subject (such means including optical, ultra-sonic, and electromagnetic sensors), processing the image in programmable ways to create an altered image of the subject and displaying the new image, which appears to mimic the movement and orientation of the original subject.

The Digital Imaging Rear View Mirror System Utilizes a digital camera located low in the rear of a motor vehicle and cameras located on the sides of a vehicle all connected to a small flat panel display (e.g., LCD) located in front of the driver. The images from the cameras are to be digitally integrated so as to provide a seamless rear and side view. The Digital Imaging Rear View Mirror System incorporates a recorder that records 15 to 20 minute continuous segments while the vehicle is in operation and stops recording a few minutes after a collision. The System also incorporates a sensor that displays in real time on the LCD and on the recording the distance of objects and vehicles behind the vehicle equipped with a Digital Imaging Rear View Mirror System, the speed of the vehicle equipped with a Digital Imaging Rear View Mirror System and the time.

The present invention relates to improved methods and apparatus for atomic layer deposition (ALD) of thin films on substrates such as wafers and flat panel displays. The invention provides an ALD reactor comprising a first temperature regulating system to control the temperature of the substrate and a second temperature regulating system to independently control the temperature of the reaction chamber walls. The invention also provides a method for ALD of a film onto a substrate in a reaction chamber, in which the temperature of the substrate is maintained to maximize ALD on the substrate while the temperature of the reaction chamber walls is set to minimize film growth thereon, whether by ALD, condensation, physisorption or thermal decomposition. The temperature of the walls may be maintained at the same temperature as the substrate, or higher or lower than the substrate temperature, depending upon the particular reaction being used.

A video display for two or three dimensions has a flat liquid-crystal screen which ejects light from the plane at a selectable line. One or, in the case of a 3-D display, several video projectors project a linear image into the plane from an edge. A complete image is written on the screen by addressing the line with appropriate images as it is scanned down the screen. To screen a three-dimensional image, the video projectors, each projecting an image as seen at a slightly different angle, combine to constitute a three-dimensional display which produces a three-dimensional image that is one line high.

The embodiments of the present invention provide a flat panel display having a plurality of pixels, each comprising a light-emitting device configured to emit light in accordance with a current flowing through the light-emitting device, a transistor coupled to the light-emitting device and configured to provide the current through the light-emitting device, the current increasing with a ramp voltage applied to a control terminal of the transistor, and a switching device configured to switch off in response to the luminance of the light-emitting device having reached a specified level, thereby disconnecting the ramp voltage from the transistor and locking the brightness at the specified level. The ramp voltage is generated in each pixel instead of in peripheral circuits, thereby reducing the number of conducting lines in the display.

An optical device consists of one or more optical waveguides and mechanical light switches 30. When a light switch 30 is turned on, it extracts light beam 62a from a waveguide core 20 and redirect the light beam 62b into free space, it redirects an incoming light beam 80 from free space and injects the light beam 80a into the waveguide core 20, or it performs both functions at the same time, depending on specific applications. On and off states of a light switch 30 are achieved by pulling the light switch 30 into a close vicinity of the waveguide core 20 and by pushing the light switch 30 away from the waveguide core 20, respectively. An interactive fiat-panel display can be built based on this invention. A plurality of parallel channel waveguides forms a display panel. An array of light beams 62a, injected from an array light source 60, propagates along waveguide cores 20 until reaches a location where a light switch 30 is turned on. At this location, the light switch 30 redirects the light beams towards a viewer. An image is produced when the light switches 30 are turned on sequentially while the light-intensity distribution on the array light source 60 is synchronically updated. The panel display is capable of responding to an input optical signal by detecting an incoming light beam 80 from a light pen 100. An array of photodetectors 81 is used to identify the location of the incoming light beam 80 on the display panel and a computer is used to execute a corresponding action accordingly.