摘要:
A thin-film EL element is manufactured by forming a silicon nitride or silicon oxynitride film for a first dielectric layer by sputtering and a silicon nitride or silicon oxynitride film for a second dielectric layer by plasma chemical vapor deposition so that the element's resistance against moisture and mass productivity can be improved.
摘要:
A thin-film electroluminescent (EL) element comprises a thin-film electroluminescent layer, first and second dielectric layers for supporting the element layer, the first dielectric layer being disposed on a smooth surface and the second dielectric layer being disposed on an uneven surface, the thickness of the first dielectric layer being thicker than that of the second dielectric layer such that the dielectric properties of the element are assured, and first and second electrodes provided on the dielectric layers, respectively.
摘要:
An EL panel including an array of scan electrodes, an array of data electrodes crossing the scan electrodes and a plurality of pixels each lying sandwiched between a respective one of the scan electrodes and a respective one of data electrodes is driven by a circuit for applying sequentially a write pulse voltage to the scan electrodes in a line scanning fashion and a circuit for applying a refresh pulse voltage of a polarity opposite to that of the write pulse voltage throughout the panel upon completion of field scanning. The system further includes a circuit for applying throughout the display panel upon completion of field scanning a write compensation pulse of the same polarity as that of the refresh pulse voltage and an amplitude insufficient to cause electroluminescence, and a refresh compensation pulse of a polarity opposite to that of the refresh pulse and an amplitude not enough to cause electroluminescence. Preferably, the values of the write compensation pulse and the refresh compensation pulse depend on factors of an equivalent circuit of the EL panel.
摘要:
An aging method for a thin-film electroluminescent display element comprises the steps of applying an AC voltage having at least one characteristic selected from the features that its frequency is approximately within 500 Hz through 10 KHz, its pulse width is approximately within 20 .mu.sec through 100 .mu.sec, and its voltage is of a magnitude, at which a virgin thin-film electroluminescent display element starts to emit electroluminescence, plus 30 V through 60 V.
摘要:
When driving a thin-film EL display panel having groups of two electrodes on opposing sides of a thin-film EL layer, a voltage is applied so that the polarity of the AC pulse applied to the intersection (picture element) of opposing electrodes is the reverse of the polarity of the AC pulse applied simultaneously or nearly simultaneously to adjacent or nearly adjacent picture elements. This drive method avoids flicker caused by differing luminance intensities resulting from alternating polarity in EL matrix-type displays.
摘要:
A method of aging a thin-film electroluminescent (EL) display element comprises the steps of applying an aging voltage to electrodes of the element, and changing the peak value of the aging voltage in accordance with the characteristics of the element which change during an aging period. An aging circuit to perform the above method is provided. In a specific example, the magnitude of the aging voltage is changed according to the relationship between the brightness of electroluminescence generated from the element and a driving voltage applied to the element. In another specific example, the magnitude of the aging voltage is changed such that the brightness of the electroluminescence is sustained to be substantially constant, thereby making operation points constant on the above characteristics.
摘要:
A thin film EL element has a glass substrate, a pair of electrode layers formed on this glass substrate, and an electroluminescent layer sandwiched between these electrode layers. The glass substrate is of non-alkali type and has volume resistivity of 10.sup.6 ohm-cm or greater at 600.degree. C., alkali content of 0.5 wt % or less, and strain point of 600.degree. C. or higher.
摘要:
An automatic packaging apparatus has a bag forming device for automatically forming bags each containing one or more articles and a vacuum sealing device for sealing open ends of the bags in a vacuum. The vacuum sealing device has a plurality of bag supporting devices revolving synchronously with the feeding device and having respective pillow heads for resting thereon the open ends of the bags and vacuum covers each cooperating with a respective one bag supporting device to form one vacuum box in which the open end of the bag is sealed by and between a heating member provided in the vacuum box and the pillow head. Further the pillow head or a platform of the bag supporting device is moved vertically.
摘要:
A thin electroluminescent (EL) display panel is disclosed which comprises an EL thin film unit for generating an EL light, two glass substrates for sealing the EL thin film unit, a protective liquid filled within a cavity defined by the two glass substrates for protecting the EL thin film unit, a pair of electrodes for conducting electric energy to the EL thin film unit, an injection hole for introducing the protective liquid, the injection hole being sealed, and a covering member for completely covering the sealed injection hole.
摘要:
A method of and a system for removing miniuscule solid particles from liquid wherein the liquid to be processed is supplied to one end of at least one filter element which may be a porous tube filter open at opposite ends and formed with a multiplicity of tiny openings in its wall having a first surface and a second surface. The liquid flows along the first surface and a portion thereof is passed through the tiny openings from the first surface side to the second surface side because of the latter being under lower pressure than the former, to be drawn off as filtrate. The rest of the liquid or a concentrated liquid portion flows out of the other end of the filter element. The flow velocity F of the liquid flowing along the first surface and/or the flow velocity f of the filtrate through the tiny openings is controlled such that the ratio F/f can be kept at a predetermined value.