摘要:
The invention relates to a method for etching an assembled block copolymer layer comprising first and second polymer phases, in which the etching method includes exposing the assembled block copolymer layer to a plasma so as to etch the first polymer phase and simultaneously to deposit a carbon layer on the second polymer phase, the etching method being characterised in that the plasma is formed from a gas mixture comprising a depolymerising gas (Z) and an etching gas selected among the hydrocarbons (C x H y ).
摘要:
An array substrate, a manufacturing method thereof and a display device are disclosed. The array substrate comprises: a base substrate (1), thin-film transistors (TFTs), an isolation layer (10) and an organic resin layer (8) formed on the base substrate (1), and a common electrode layer (12) formed on the organic resin layer (8). The isolation layer (10) covers source electrodes (6) and drain electrodes (7) of the TFTs; the organic resin layer (8) covers the isolation layer (10) and is provided with first through holes (9) corresponding to the drain electrodes (7) of the TFTs; the isolation layer (10) is provided with second through holes (11) communicated with the first through holes (9) to expose partial drain electrodes (7); and the dimension of the second through holes (11) is greater than that of the first through holes (9). The array substrate, the manufacturing method thereof and the display device resolve the problem of forming dark dots, ensure the product quality, reduce the waste of production materials, and reduce the production cost.
摘要:
A layer of partially planarized organosilicate (DUO) is spin-coated onto a layer of high density plasma (HDP) oxide on a silicon wafer after the shallow trench isolation (STI) is filled with the HDP oxide. Then the DUO layer is etched using a specialized process specifically tuned to etch the DUO and high density plasma (HDP) oxide at a certain selectivity. The higher areas of the wafer topography (active Si areas) have thinner DUO and as the etch process proceeds it starts to etch through the HDP oxide in these areas (active Si areas). The etch process is stopped after a certain depth is reached and before touching down on the silicon nitride oxidation layer. The DUO is removed and a standard chemical-mechanical polish (CMP) is performed on the silicon wafer. After the CMP step the silicon nitride is removed, exposing the silicon substrate between the field oxides.
摘要:
The present invention provides a pattern forming method which uses a resist underlayer film having resistance to a basic aqueous hydrogen peroxide solution. A pattern forming method comprising: a first step of applying a resist underlayer film-forming composition containing a solvent and a polymer having a weight average molecular weight of 1,000 to 100,000 and an epoxy group on a semiconductor substrate that may have an inorganic film on the surface, followed by baking, to form a resist underlayer film; a second step of forming a resist pattern on the resist underlayer film; a third step of dry etching the resist underlayer film using the resist pattern as a mask to expose a surface of the inorganic film or the semiconductor substrate; and a forth step of wet etching the inorganic film or the semiconductor substrate using the dry-etched resist underlayer film as a mask and a basic aqueous hydrogen peroxide solution.
摘要:
A pattern is formed on an underlying layer of a target object by a pattern forming method. The pattern forming method includes (a) forming a block copolymer layer, which includes a first polymer and a second polymer and is configured to be self-assembled, on the underlying layer; (b) processing the target object to form a first region containing the first polymer and a second region containing the second polymer in the block copolymer layer; (c) etching the second region partway in a thickness direction of the second region in a capacitively coupled plasma processing apparatus after the processing of the target object; (d) generating secondary electrons from an upper electrode of the plasma processing apparatus by applying a negative DC voltage to the upper electrode and irradiating the secondary electrons onto the target object, after the etching of the second region; and (e) additionally etching the second region in the plasma processing apparatus after the irradiating of the secondary electrons onto the target object.
摘要:
There is provided a resist underlayer film-forming composition for EUV lithography which shows good resist shape. A resist underlayer film-forming composition for EUV lithography, comprising: a hydrolyzable organosilane, a hydrolyzed product thereof, or a hydrolyzed condensate thereof, as a silane; and a salt of a sulfonic acid ion containing a hydrocarbon group with an onium ion. The hydrolyzable organosilane preferably comprises at least one organic silicon compound selected from the group consisting of compounds of Formula (1): €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒR 1 a Si(R 2 ) 4-a €ƒ€ƒ€ƒ€ƒ€ƒFormula (1) and compounds of Formula (2): €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ[R 3 c Si(R 4 ) 3-c ] 2 Y b €ƒ€ƒ€ƒ€ƒ€ƒFormula (2) a hydrolyzed product thereof, or a hydrolyzed condensate thereof. A method for manufacturing a semiconductor device, the method comprising: forming an organic underlayer film on a semiconductor substrate; forming a resist underlayer film by applying the resist underlayer film-forming composition onto the organic underlayer film, and then baking the applied resist underlayer film-forming composition; forming a resist film by applying a composition for EUV resists onto the resist underlayer film; EUV-exposing the resist film; and obtaining a resist pattern by developing the exposed resist film.
摘要:
A pattern is formed on an underlying layer of a target object by a pattern forming method. The pattern forming method includes (a) forming a block copolymer layer, which includes a first polymer and a second polymer and is configured to be self-assembled, on the underlying layer; (b) processing the target object to form a first region containing the first polymer and a second region containing the second polymer in the block copolymer layer; (c) etching the second region partway in a thickness direction of the second region in a capacitively coupled plasma processing apparatus after the processing of the target object; (d) generating secondary electrons from an upper electrode of the plasma processing apparatus by applying a negative DC voltage to the upper electrode and irradiating the secondary electrons onto the target object, after the etching of the second region; and (e) additionally etching the second region in the plasma processing apparatus after the irradiating of the secondary electrons onto the target object.
摘要:
A method for performing a spacer etch process is described. The method includes providing a gate structure on a substrate having a low-k spacer material conformally applied over the gate structure, and performing a spacer etch process sequence to partially remove the spacer material from the gate structure and the substrate, while retaining a sidewall spacer positioned along a sidewall of the gate structure. The spacer etch process sequence may include depositing a spacer protection layer on an exposed surface of said spacer material, and performing one or more etching processes to selectively and anisotropically remove the spacer protection layer and the spacer material to leave behind the sidewall spacer on the sidewall of the gate structure, wherein, while being partly or fully consumed by the one or more etching processes, the spacer protection layer exhibits a reduced variation in composition and/or dielectric constant.