摘要:
Heat stable, negative resist compositions are provided for use, particularly in deep ultraviolet light X-ray and electron beams. The composition comprises an acid generating onium salt photoinitiator, a source of polyfunctional activated aromatic rings and a source of polyfunctional carbonium ions, with at least one of said sources being a polymer.
摘要:
A composition including an initiator which generates acid upon exposure to radiation in the presence of a sensitizer. The composition may be mixed with an acid sensitive polymer or prepolymer to make a visible light or laser imageable photoresist. The sensitizer has phenylethynyl and methoxy substituents which, when properly positioned, allow it to utilize all of the visible argon ion laser lines.
摘要:
Resists sensitive to UV, electron beam and X-ray radiation with positive or negative tone upon proper choice of a developer are formulated from a polymer having recurrent pendant groups such as tert-butyl ester or tert-butyl carbonates that undergo efficient acidolysis with concomitant changes in polarity (solubility) together with a photoinitiator which generates acid upon radiolysis. A sensitizer component that alters wavelength sensitivity may also be added.
摘要:
The present invention discloses particular lithographic polymeric materials and methods of using these materials, wherein the polymeric materials have acid labile or photolabile groups pendant to the polymer backbone. The polymeric materials are sufficiently transparent to deep UV radiation to permit deep UV imaging, can be used to produce resist structures having thermal stability at temperatures greater than about 160.degree. C., and are sufficiently resistant to excessive crosslinking when heated to temperatures ranging from about 160.degree. C. to about 250.degree. C. that they remain soluble in common lithographic developers and strippers.The present invention also discloses resists comprising substituted polyvinyl benzoates which, after imaging, exhibit unexpectedly high thermal stability, in terms of plastic flow. These resists cannot be imaged using deep UV because they exhibit such a high degree of opacity below 280 nm; however, they are useful as the top, imaging layer in a bilayer resist process wherein the top layer acts as a mask during deep UV exposure of the bottom layer.
摘要:
A positive tone photoresist is obtained without a solvent development step. The resist is a polymer containing masked reactive functionality which is imagewise exposed to unmask the functionality then treated with a non-organometallic reagent to remask that functionality. Following flood exposure, the resist is treated with an organometallic reagent containing an element which forms a non-volatile oxide. It is then developed by means of oxygen reactive ion etching.
摘要:
The present invention relates to an improved lithographic photoresist composition comprising a photosensitive base generator. The composition is useful in the manufacture of integrated circuits.
摘要:
Positive resists are formed from a soluble phenolic resin and a sensitizer which is a diester of a 1-oxo-2-diazonaphthalene sulfonic acid and of an unsymmetrical primary or secondary aliphatic diol which is a mixture of geometric and diastereoisomers.
摘要:
The present invention is concerned with methods of converting a single resist layer into a multilayered resist.The upper portion of the single resist layer can be converted into a dry-etch resistant form. The conversion can be a blanket conversion of the upper portion of the resist layer or can be a patterned conversion of areas within the upper portion of the layer. A patternwise-converted resist can be oxygen plasma developed.The upper portion of the single resist layer can be patternwise converted into a chemically different composition or structure having altered absorptivity toward radiation. The difference in radiation absorptivity within the patterned upper portion of the resist enables subsequent use of blanket irradiation of the resist surface to create differences in chemical solubility between areas having the altered absorptivity toward radiation and non-altered areas. The difference in chemical solubility enables wet development of the patterned resist.
摘要:
The present invention is directed to an apparatus for patterning a liquid on a substrate, with the apparatus including, a template having a pair of spaced-apart recessions with a protrusion disposed therebetween, with the protrusion being spaced-apart from the substrate a first distance and each of the pair of spaced-apart recessions being spaced-apart from the substrate a second distance, with the second distance being greater than the first distance; and a source of voltage in electrical communication with the template to produce an electric field between the template and the substrate, with a strength of the electrical field being inversely proportional to the first and second distances.