摘要:
A patterned phosphor structure, and EL laminate containing same, forming red, green, and blue sub-pixel phosphor elements for an AC electroluminescent display. The patterned phosphor structure includes at least a first and a second phosphor emitting light in different ranges of the visible spectrum, but with combined emission spectra contains red, green, and blue light, the first and second phosphors being in a layer, arranged in adjacent, repeating relationship to each other to provide a plurality of repeating first and second phosphor deposits. Photolithographic methods for producing the patterned phosphor structure are also provided. Also provided is an improved dielectric layer for use in an EL laminate, including a pressed, sintered ceramic material having, compared to an unpressed, sintered dielectric layer of the same composition, improved dielectric strength, reduced porosity and uniform luminosity in an EL laminate.
摘要:
A patterned phosphor structure and EL laminate containing same, forming red, green and blue sub-pixel phosphor elements for an AC electroluminescent display. The patterned phosphor structure includes at least a first and a second phosphor emitting light in different ranges of the visible spectrum, but with combined emission spectra contains red, green and blue light, the first and second phosphors being in a layer, arranged in adjacent, repeating relationship to each other to provide a plurality of repeating first and second phosphor deposits. The phosphor structure also includes one or more means associated with one or more of the first and second phosphor deposits for setting and equalizing the threshold voltages of the red, green and blue sub-pixel phosphor elements, and for setting the relative luminosities of the red, green and blue sub-pixel phosphor elements so that they bear set ratios to one another at each operating modulation voltage used to generate the desired luminosities for red, green and blue.
摘要:
The invention provides a method of forming a thick film dielectric layer in an EL laminate of the type including one or more phosphor layers sandwiched between a front and a rear electrode with the phosphor layer being separated from the rear electrode by a thick film dielectric layer. The method includes depositing a ceramic material in one or more layers by a thick film technique to form a dielectric layer having a thickness of 10 to 300 μm; pressing the dielectric layer to form a densified layer with reduced porosity and surface roughness; and sintering the dielectric layer to form a pressed, sintered dielectric layer which, in an EL laminate, has an improved uniform luminosity over an unpressed, sintered dielectric layer of the same composition.
摘要:
A physical vapour deposition method for the deposition of thioaluminate phosphor compositions includes providing one or more source materials including an intermetallic barium aluminum compound, a barium aluminum alloy or a protected barium metal, providing an activator species and effecting deposition of the one or more source materials and activator species as a phosphor composition on a selected substrate. The method allows for the deposition of blue thin film electroluminescent phosphors with high luminance and colors required for TV applications.
摘要:
The invention provides a method of forming a patterned phosphor structure having red, green and blue sub-pixel elements for an AC electroluminescent display. The method involves selecting first and second phosphors, each emitting light in different ranges of the visible spectrum, but whose combined emission spectra contains red, green and blue light; depositing and patterning the phosphors in a layer to form a plurality of repeating phosphor deposits; and providing means associated with the phosphor deposits, and which together with the phosphor deposits form the red, green and blue sub-pixel phosphor elements, for setting and equalizing the threshold voltages, and for setting the relative luminosities of the red, green and blue sub-pixel phosphor elements so that they bear set ratios to one another at each modulation voltage used to generate the desired luminosities for red, green and blue; and optionally annealing the patterned phosphor structure so formed.
摘要:
A pixel sub-structure for an electroluminescent display and a method for making the same. The sub-structure comprising: a color conversion layer; and an optical enhancement layer; wherein at least a portion of the color conversion layer is integrated with at least a portion of the optical enhancement layer.
摘要:
An electroluminescent display and driving method is provided wherein the rows of pixels are divided into sub-pixel sets and several different sets of sub-pixels are then addressed from within a larger superset of adjacent sub-pixels. The image data for the addressed sub-pixels is averaged with that for adjacent sub-pixels and is applied to the reduced number of larger sub-pixels in sequence. Consequently, for a given sequence of input frame data sets the time average over one frame for a portion of the sub-pixels at any location of the panel is substantially the same as that for a conventionally addressed sub-pixel in a prior art panel.
摘要:
A thin film phosphor for an electroluminescent device, the phosphor being a compound of the formula MgxCa1−xAl2S4:M, where the value of x is in the range 0
摘要翻译:一种用于电致发光器件的薄膜荧光体,所述荧光体是式Mg x Ca 1-x Al 2 S 4:M的化合物,其中x的值在0
摘要:
An improved dielectric layer of an electroluminescent laminate, and method of preparation are provided. The dielectric layer is formed as a thick layer from a ceramic material to provide: a dielectric strength greater than about 1.0.times.10.sup.6 V/m; a dielectric constant such that the ratio of the dielectric constant of the dielectric material to that of the phosphor layer is greater than about 50:1; a thickness such that the ratio of the thickness of the dielectric layer to that of the phosphor layer is in the range of about 20:1 to 500:1; and a surface adjacent the phosphor layer which is compatible with the phosphor layer and sufficiently smooth that the phosphor layer illuminates generally uniformly at a given excitation voltage. The invention also provides for electrical connection of an electroluminescent laminate to voltage driving circuity with through hole technology. The invention also extends to laser scribing the transparent conductor lines of an electroluminescent laminate.
摘要翻译:提供了电致发光层压板的改进的介电层及其制备方法。 介电层由陶瓷材料形成为厚层,以提供:大于约1.0×10 6 V / m 2的介电强度; 介电常数使得介电材料的介电常数与荧光体层的介电常数之比大于约50:1; 使得电介质层的厚度与荧光体层的厚度的比率在约20:1至500:1的范围内的厚度; 以及与荧光体层相容并且足够光滑的磷光体层的表面,使得荧光体层在给定的激发电压下大致均匀地照射。 本发明还提供电致发光层压板与通孔技术的电压驱动电路的电连接。 本发明还延伸到激光刻划电致发光层压板的透明导体线。
摘要:
An improved dielectric layer of an electroluminescent laminate, and method of preparation are provided. The dielectric layer is formed as a thick layer from a ceramic material to provide:a dielectric strength greater than about 1.0.times.10.sup.6 V/m;a dielectric constant such that the ratio of the dielectric constant of the dielectric material to that of the phosphor layer is greater than about 50:1;a thickness such that the ratio of the thickness of the dielectric layer to that of the phosphor layer is in the range of about 20:1 to 500:1; anda surface adjacent the phosphor layer which is compatible with the phosphor layer and sufficiently smooth that the phosphor layer illuminates generally uniformly at a given excitation voltage.The invention also provides for electrical connection of an electroluminescent laminate to voltage driving circuity with through hole technology. The invention also extends to laser scribing the transparent conductor lines of an electroluminescent laminate.
摘要翻译:提供了电致发光层压板的改进的介电层及其制备方法。 介电层由陶瓷材料形成为厚层,以提供:大于约1.0×10 6 V / m 2的介电强度; 介电常数使得介电材料的介电常数与荧光体层的介电常数之比大于约50:1; 使得电介质层的厚度与荧光体层的厚度的比率在约20:1至500:1的范围内的厚度; 以及与荧光体层相容并且足够光滑的磷光体层的表面,使得荧光体层在给定的激发电压下大致均匀地照射。 本发明还提供电致发光层压板与通孔技术的电压驱动电路的电连接。 本发明还延伸到激光刻划电致发光层压板的透明导体线。