摘要:
A system and method are disclosed which enable temperature of a substrate, such as mask or reticle, to be monitored and/or regulated. One or more temperature sensors are associated with the substrate to sense substrate temperature during exposure by an exposing source. The sensed temperature is used to control one or more process parameters of the exposure to help maintain the substrate at or below a desired temperature.
摘要:
A system for detecting voids in an ILD layer is provided. The system includes one or more light sources, each light source directing light to respective portions of the ILD layer. Light reflected from the respective portions is collected by a measuring system that processes the collected light. The collected light is indicative of the presence of voids in the respective portions of the ILD layer. The measuring system provides ILD layer void related data to a processor that determines whether voids exist in the respective portions of the ILD layer. The processor selectively marks the ILD layer portions to facilitate further processing and/or destruction of the IC with the ILD layer voids.
摘要:
A system and method are disclosed for monitoring characteristics of a rotating substrate. As the substrate rotates in an environment, an incident light beam is emitted onto the substrate near an axis about which the substrate rotates. The emission of the incident beam is controlled as a function of the angular orientation of the substrate, so that the incident beam selectively interrogates a central region of the substrate to facilitate measuring and/or inspecting characteristics of the substrate.
摘要:
The present invention relates to systems and methods to regulate spacer deposition. The present invention employs a spacer deposition controller to control a spacer deposition component that deposits a spacer on a portion of a wafer. During and/or after spacer deposition, light can be directed at the spacer, wherein light reflected from the spacer is measured to determine parameters associated with the spacer deposition process. A processor operatively coupled to a measurement system and the spacer deposition controller utilizes the parameters to determine if the spacer process is proceeding in a suitable manner via comparing the measured parameters with stored acceptable parameters. If it is determined that the spacer deposition process is not proceeding as desired, then the measured parameters can be employed by the spacer deposition controller to adjust the spacer deposition process on the portion of the wafer and on subsequent portions of wafers.
摘要:
A system for characterizing a chemical mechanical polishing process is provided. The system includes a wafer that has a metal, polysilicon, and/or dielectric layer and/or substrate and a temperature sensor located in and/or on the metal, polysilicon and/or dielectric layer and/or substrate. The system also includes a temperature monitoring system that can read the wafer temperature from the temperature sensors and that can analyze the wafer temperature to characterize the chemical mechanical polishing process. Such characterization includes producing information concerning relationships between wafer temperature and polishing rate, polishing uniformity and introduction of defects during polishing. Such relationships are correlated with wafer temperature as related to parameters like polishing time, pressure, speed, slurry properties and wafer/metal layer properties. Such characterization can be employed, for example, to better understand a CMP process, to facilitate initializing subsequent chemical mechanical polishing processes and/or apparatus and/or to control such chemical mechanical polishing processes and/or apparatus by monitoring and/or controlling wafer temperature.
摘要:
One aspect of the present invention elates to a method of reducing electrostatic charges on a patterned photoresist to improve evaluation of the developed photoresist, involving the steps of evaluating the patterned photoresist to determine if electrostatic charges exist thereon; positioning an ionizer near the patterned photoresist, the ionizer generating ions thereby reducing the electrostatic charges on the patterned photoresist; and evaluating the patterned photoresist with an electron beam. Another aspect of the present invention relates to a system for reducing electrostatic charges on a patterned photoresist, containing a charge sensor for determining if electrostatic charges exist on the patterned photoresist and measuring the electrostatic charges; an ionizer positioned near the patterned photoresist having electrostatic charges thereon for reducing the electrostatic charges on the patterned photoresist; a controller for setting at least one of time of ion generation and amount of ion generation by the ionizer, the controller coupled to the charge sensor and the ionizer; and a scanning electron microscope or an atomic force microscope for evaluating the patterned photoresist having reduced electrostatic charges thereon with an electron beam.
摘要:
A system and method are disclosed for facilitating removal of a defect from a substrate. A charge is applied at the surface of substrate, such as in the form of an ionized gas, to weaken attractive forces between the defect and the substrate. As a result of weakening the attractive forces, a suitable defect removal system may be employed to remove the defect.
摘要:
One aspect of the present invention relates to a system for dissipating electrostatic charge on a mask plate structure containing the mask plate structure containing a substrate, a chromium layer over the substrate, and a conductive polymer over the chromium layer; a conductive structure coupled to the mask plate structure which allows accumulated electrostatic charge to flow from the mask plate structure; a conductive path between the conductive structure and a ground, wherein the conductive path inacludes a switch controlled by a controller; and a detector coupled to the controller for signaling the controller when the accumulation of electrostatic charge is detected. Another aspect of the present invention relates to a method for dissipating charge accumulation during patterning of mask plates using a conductive polymer layer involving the steps of providing a mask substrate having a chromium layer; depositing a conductive polymer layer over the chromium layer; connecting a conductive structure to the mask substrate; irradiating portions of the mask substrate with an electron beam; detecting whether electrostatic charge exists on the mask substrate; and if electrostatic charge is detected, closing a circuit whereby the conductive structure is grounded to permit a flow of electrostatic charge from the mask substrate to the ground.
摘要:
The present invention relates to a system and method of modifying mask layout data to improve the fidelity of mask manufacture. The system and method include determining the difference between the mask layout design and the mask features as written, and generating sizing corrections. The sizing corrections can be used to modify the mask layout data, and/or stored in a database.
摘要:
The present invention relates to a method for forming an etch mask. A photoresist layer is patterned, wherein d1 is a smallest space dimension of an exposed area of a layer underlying the photoresist layer. A polymer layer is formed to be conformal to the patterned photoresist layer and exposed portions of the underlayer. The polymer layer is etched to form polymer sidewalls, the polymer sidewalls reducing the smallest space dimension of the exposed underlayer area to d2, wherein d2