摘要:
A method of fabricating a grayscale mask includes preparing a silicon wafer; depositing a layer of Si3N4 directly on the silicon wafer; implanting H+ ions into the silicon wafer to form a defect layer; depositing a first layer of SiOxNy directly on the Si3N4 layer; depositing a layer of SRO directly on the first layer of SiOxNy; patterning and etching the SRO layer to form a microlens array in the SRO layer; depositing a second layer of SiOxNy on the SRO microlens array; CMP to planarize the second layer of SiOxNy; bonding and cleaving the planarized SiOxNyto a quartz plate to form a graymask reticle; etching to remove silicon from the bonded structure; etching to remove SiOxNy and Si3N4 from the bonded structure; and cleaning and drying the graymask reticle.
摘要翻译:制造灰度掩模的方法包括制备硅晶片; 在硅晶片上直接沉积一层Si3N4; 将H +离子注入到硅晶片中以形成缺陷层; 在Si 3 N 4层上直接沉积第一层SiOxNy层; 在第一层SiOxNy上直接沉积一层SRO; 图案化和蚀刻SRO层以在SRO层中形成微透镜阵列; 在SRO微透镜阵列上沉积第二层SiOxNy; CMP平面化第二层SiOxNy; 将平面化的SiO x N y键合并切割成石英板以形成灰色掩模掩模; 蚀刻以从结合结构去除硅; 蚀刻从结合结构去除SiOxNy和Si3N4; 并清理并干燥灰色掩模。
摘要:
A method of fabricating a grayscale mask includes preparing a silicon wafer; depositing a layer of Si3N4 directly on the silicon wafer; implanting H+ ions into the silicon wafer to form a defect layer; depositing a first layer of SiOxNy directly on the Si3N4 layer; depositing a layer of SRO directly on the first layer of SiOxNy; patterning and etching the SRO layer to form a microlens array in the SRO layer; depositing a second layer of SiOxNy on the SRO microlens array; CMP to planarize the second layer of SiOxNy; bonding and cleaving the planarized SiOxNy to a quartz plate to form a graymask reticle; etching to remove silicon from the bonded structure; etching to remove SiOxNy and Si3N4 from the bonded structure; and cleaning and drying the graymask reticle.
摘要翻译:制造灰度掩模的方法包括制备硅晶片; 在硅晶片上直接沉积一层Si 3 N 4 N 4; 将H +离子注入到硅晶片中以形成缺陷层; 在Si 3 N 4 N层上直接沉积第一层SiO x N y Y y; 在第一SiO 2层上沉积SRO层; 图案化和蚀刻SRO层以在SRO层中形成微透镜阵列; 在SRO微透镜阵列上沉积第二层SiO x N N y O; CMP以使第二层SiO 2平面化; 将平坦化的SiO x N N y键合并切割成石英板以形成灰色掩模掩模版; 蚀刻以从结合结构去除硅; 蚀刻以从结合的结构去除SiO 2和N 3 N 4和S 3 N 4 N 4; 并清理并干燥灰色掩模。
摘要:
A method is provided for forming an error diffusion-derived sub-resolutional grayscale reticle. The method forms at least one partial-light transmissive layer overlying a transparent substrate. At least one unit cell in formed in the transmissive layer. The unit cell is formed by selecting the number of reduced-transmission pixels in the unit cell, and forming a sub-pattern of reduced-transmission pixels in the unit cell. The unit cell is sub-resolutional at a first wavelength.
摘要:
A sub-resolutional grayscale reticle and associated fabrication method have been presented. The method provides a transparent substrate, and forms a plurality of coincident partial-light transmissive layers overlying the transparent substrate. A pattern is formed, sub-resolutional at a first wavelength, in at least one of the transmissive layers. If there are n transmissive layers, the reticle transmits at least (n+1) intensities of light. In one aspect, each of the plurality of transmissive layers has the same extinction coefficient and the same thickness. In other aspects, the transmissive layers may have different thickness. Then, even if the extinction coefficients are the same, the attenuation of light through each layer is different. The transmission characteristics of the reticle can be further varied if the transmissive layers have different extinction coefficients. Likewise, the transmission characteristics through the sub-resolutional patterns can be varied.
摘要:
A method of fabricating a grayscale reticle includes preparing a quartz wafer substrate; depositing a layer of SRO on the top surface of the quartz substrate; patterning and etching the SRO to form an initial microlens pattern using step-over lithography; patterning and etching the SRO to form a recessed pattern in the SRO; depositing an opaque film on the SRO; patterning and etching the opaque film; depositing and planarizing a planarizing layer; cutting the quartz wafer into rectangular pieces sized to be smaller than a selected blank reticle; bonding the a piece a to selected reticle blank to form a grayscale reticle; and using the grayscale reticle to form a microlens array on a photoimager.
摘要:
A method of fabricating a grayscale mask includes preparing a quartz wafer; depositing a layer of Si3N4 on the quartz wafer; depositing a layer of titanium/TEOS directly on the Si3N4 layer on the backside of the quartz wafer; removing the layer of Si3N4 from the front side of the quartz wafer; depositing a layer of SRO directly on the front side of the quartz wafer; patterning a microlens array on the SRO layer; etching the SRO layer to form a microlens array in the SRO layer; depositing a layer of titanium; patterning and etching the titanium layer; depositing a layer of SiOxNy on the SRO microlens array; CMP to planarize the layer of SiOxNy removing the titanium/TEOS layer from the backside of the quartz wafer; bonding the planarized SiOxNy to a quartz reticle plate; and etching to remove Si3N4 from the bonded structure to form a grayscale mask reticle.
摘要翻译:制造灰度掩模的方法包括制备石英晶片; 在石英晶片上沉积一层Si 3 N 4 N 4; 在石英晶片的背面上的Si 3 N 4 N 4层上直接沉积钛/ TEOS层; 从石英晶片的正面去除Si 3 N 4 N 4层; 在石英晶片的正面上直接沉积SRO层; 在SRO层上构图微透镜阵列; 蚀刻SRO层以在SRO层中形成微透镜阵列; 沉积一层钛; 图案化和蚀刻钛层; 在SRO微透镜阵列上沉积一层SiO 2 x N y O; CMP以平坦化从石英晶片的背面去除钛/ TEOS层的SiO 2 x N y层; 将平坦化的SiO x N N y N键合到石英光罩板上; 以及蚀刻以从结合结构去除Si 3 N 4 N 4以形成灰度掩模掩模版。
摘要:
A method of fabricating a grayscale reticle includes preparing a quartz wafer substrate; depositing a layer of SRO on the top surface of the quartz substrate; patterning and etching the SRO to form an initial microlens pattern using step-over lithography; patterning and etching the SRO to form a recessed pattern in the SRO; depositing an opaque film on the SRO; patterning and etching the opaque film; depositing and planarizing a planarizing layer; cutting the quartz wafer into rectangular pieces sized to be smaller than a selected blank reticle; bonding the a piece a to selected reticle blank to form a grayscale reticle; and using the grayscale reticle to form a microlens array on a photoimager.
摘要:
A grayscale mask made from semi-transparent film layers is provided, along with an associated fabrication method. The method provides a transparent substrate, such as quartz, with a surface. A first layer of a semi-transparent film having a surface with a first surface area, is formed overlying the substrate surface. At least a second layer of the semi-transparent film having a surface with a second surface area greater than the first surface area, is formed overlying the first layer. A first vertical region is formed having a light first attenuation parameter through the combination of substrate, first layer, and second layer. A second vertical region is formed having a light second attenuation parameter through the combination of the first layer and substrate, and a third vertical region is formed having a light third attenuation parameter through the substrate.
摘要:
A method is provided for forming an error diffusion-derived sub-resolutional grayscale reticle. The method forms at least one partial-light transmissive layer overlying a transparent substrate. At least one unit cell in formed in the transmissive layer. The unit cell is formed by selecting the number of reduced-transmission pixels in the unit cell, and forming a sub-pattern of reduced-transmission pixels in the unit cell. The unit cell is sub-resolutional at a first wavelength.
摘要:
A method of fabricating a grayscale mask includes preparing a quartz wafer; depositing a layer of Si3N4 on the quartz wafer; depositing a layer of titanium/TEOS directly on the Si3N4 layer on the backside of the quartz wafer; removing the layer of Si3N4 from the front side of the quartz wafer; depositing a layer of SRO directly on the front side of the quartz wafer; patterning a microlens array on the SRO layer; etching the SRO layer to form a microlens array in the SRO layer; depositing a layer of titanium; patterning and etching the titanium layer; depositing a layer of SiOxNy on the SRO microlens array; CMP to planarize the layer of SiOxNy removing the titanium/TEOS layer from the backside of the quartz wafer; bonding the planarized SiOxNy to a quartz reticle plate; and etching to remove Si3N4 from the bonded structure to form a grayscale mask reticle.
摘要翻译:制造灰度掩模的方法包括制备石英晶片; 在石英晶片上沉积一层Si3N4; 在石英晶片的背面的Si 3 N 4层上直接沉积钛/ TEOS层; 从石英晶片的前侧去除Si 3 N 4层; 在石英晶片的正面上直接沉积SRO层; 在SRO层上构图微透镜阵列; 蚀刻SRO层以在SRO层中形成微透镜阵列; 沉积一层钛; 图案化和蚀刻钛层; 在SRO微透镜阵列上沉积一层SiOxNy; CMP平面化从石英晶片的背面去除钛/ TEOS层的SiO x N y层; 将平坦化的SiO x N y键合到石英光罩板上; 并蚀刻以从结合结构去除Si 3 N 4,以形成灰度掩模掩模版。