摘要:
A thin substrate has a layered structure on one surface, and can also have a layered structure on the other. Each layered structure can include a part of at least one patterned layer that, if patterned by photolithography, would frequently result in damage to the substrate due to fragility. For example, the substrate could be a 3 mil (76.2 μm) or thinner polyimide film and one patterned layer could be a semiconductor material such as vanadium oxide, while another could be metal in electrical contact with semiconductor material. The layer part, however, can be patterned by a printing operation or can include a printed patterned artifact such as an uneven boundary or an alignment. The printing operation can be direct printing or printing of a mask for etching or liftoff or both. The layered structure can include an array of cells, each with layer parts on each substrate surface.
摘要:
A passive electronic device includes layers of a layered structure on a support surface. The device can include a first layer part that includes electrically conductive or semiconductive material and that has a contact surface. The device can also include second layer parts that include electrically conductive material and are in electrical contact with the contact surface, with a subset electrically connectible to external circuitry. At least one of the parts of the two layers can be produced by a printing operation or can include a printed patterned artifact such as an uneven boundary or an alignment. The printing operation can be direct printing or printing of a mask for etching or liftoff or both. The device could, for example, be a resistive device, such as a device with resistance varying in response to non-electrical stimuli, or a conductive device, such as with a contact pad for a pogo pin.
摘要:
A layered structure is on a support structure's surface. The layered structure can include a component that responds electrically to thermal signals, such as a thermistor, and can also include a layer part that has a printed patterned artifact such as an uneven boundary or an alignment. The support structure can be a polymer layer such as polyimide, and a thermistor can include vanadium oxide with a printed patterned artifact. An array can include a layered structure with thermal sensor cells, at least one of which includes a printed patterned artifact. A layered structure can be produced by depositing a first layer, printing a mask, removing the exposed part of the first layer, depositing a second layer, and lifting off part of the second layer, leaving part of the second layer next to part of the first layer.
摘要:
A system and method for providing print advertisements is presented. A target audience is assembled from characteristics about readers. Advertising content is targeted to the target audience. The characteristics of the target audience are analyzed against the advertising content to identify potential advertisers. At least one of the potential advertisers is selected. At least one print advertisement for the selected advertiser is included on the document.
摘要:
A digital lithography system prints a large-area electronic device by dividing the overall device printing process into a series of discrete feature printing sub-processes, where each feature printing sub-process involves printing both a predetermined portion (feature) of the device in a designated substrate area, and an associated test pattern in a designated test area that is remote from the feature. At the end of each feature printing sub-process, the test pattern is analyzed, e.g., using a camera and associated imaging system, to verify that the test pattern has been successfully printed. A primary ejector is used until an unsuccessfully printed test pattern is detected, at which time a secondary (reserve) ejector replaces the primary ejector and reprints the feature associated with the defective test pattern. When multiple printheads are used in parallel, analysis of the test pattern is used to efficiently identify the location of a defective ejector.
摘要:
A transistor is formed by applying modifier coatings to source and drain contacts and/or to the channel region between those contacts. The modifier coatings are selected to adjust the surface energy pattern in the source/drain/channel region such that semiconductor printing fluid is not drawn away from the channel region. For example, the modifier coatings for the contacts can be selected to have substantially the same surface energy as the modifier coating for the channel region. Semiconductor printing fluid deposited on the channel region therefore settles in place (due to the lack of a surface energy differential) and forms a relatively thick active semiconductor region between the contacts. Alternatively, the modifier coatings can be selected to have lower surface energies than the modifier coating in the channel region, which actually causes semiconductor printing fluid to be drawn towards the channel region.
摘要:
A system and method for providing print advertisements is presented. A target audience is assembled from characteristics about readers. Advertising content is targeted to the target audience. The characteristics of the target audience are analyzed against the advertising content to identify potential advertisers. At least one of the potential advertisers is selected. At least one print advertisement for the selected advertiser is included on the document.
摘要:
A process for fabricating fine features such as small gate electrodes on a transistor. The process involves the jet-printing of a mask and the plating of a metal to fabricate sub-pixel and standard pixel size features in one layer. Printing creates a small sub-pixel size gap mask for plating a fine feature. A second printed mask may be used to protect the newly formed gate and etch standard pixel size lines connecting the small gates.
摘要:
Photovoltaic devices (i.e., solar cells) are formed using non-contact patterning apparatus (e.g., a laser-based patterning systems) to define contact openings through a passivation layer, and direct-write metallization apparatus (e.g., an inkjet-type printing or extrusion-type deposition apparatus) to deposit metallization into the contact openings and over the passivation surface. The metallization includes two portions: a contact (e.g., silicide-producing) material is deposited into the contact openings, then a highly conductive metal is deposited on the contact material and between the contact holes. The device wafers are transported between the patterning and metallization apparatus in hard tooled registration using a conveyor mechanism. Optional sensors are utilized to align the patterning and metallization apparatus to the contact openings. An extrusion-type apparatus is used to form grid lines having a high aspect central metal line that is supported on each side by a transparent material.
摘要:
An electronic device comprising a thin film transistor (TFT) array and manufacturing methods thereof according to various embodiments. Jet-printed material is deposited on selected partially formed transistors to form completed transistors. Thus, a selected number of the TFTs are connected into the circuit while the remainder of the TFTs are not connected. An electronic read-out of the array identifies the specific array by distinguishing the connected TFTs from the unconnected ones. For a TFT array with n elements there are 2n alternative configurations; therefore, a relatively small number of TFTs can uniquely identify a huge number of devices. Such uniquely encoded devices have applications for encryption, identification and personalization of electronic systems.