Abstract: A method includes forming a first trench in an isolation region; forming a second trench in a device region, wherein the device region is disposed adjacent to the isolation region and each of the first and second trenches is disposed between two metal gate structures; forming a first dielectric layer in the first and the second trenches; forming a second dielectric layer over and different from the first dielectric layer; removing a portion of the second dielectric layer from the first and the second trenches, leaving behind a remaining portion of the second dielectric layer in the first trench; removing a portion of the first dielectric layer formed over a bottom surface of the second trench; subsequent to removing the portion of the first dielectric layer, removing the remaining portion of second dielectric layer from the first trench; and forming contact features in the first and the second trenches.

Abstract: An optical image capturing system and an electronic using the same are disclosed. The optical image capturing system includes at least two lenses, an image plane, and a first position element. In certain condition, the design of the optical image capturing system may simantaneously inhibit the deviation of effect focal length and improve the imagining quality in response to temperature fluctuation.

Abstract: An optical image capturing system includes, along the optical axis in order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. At least one lens among the first to the fifth lenses has positive refractive force. The fifth lens can have negative refractive force, wherein both surfaces thereof are aspheric, and at least one surface thereof has an inflection point. The lenses in the optical image capturing system which have refractive power include the first to the fifth lenses. The optical image capturing system can increase aperture value and improve the imaging quality for use in compact cameras.

Abstract: An optical image capturing system includes, along the optical axis in order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. At least one lens among the first to the fifth lenses has positive refractive force. The fifth lens can have negative refractive force, wherein both surfaces thereof are aspheric, and at least one surface thereof has an inflection point. The lenses in the optical image capturing system which have refractive power include the first to the fifth lenses. The optical image capturing system can increase aperture value and improve the imaging quality for use in compact cameras.

Abstract: An optical image capturing system with four lenses is provided. In order from an object side to an image side, the optical image capturing system includes a first lens, a second lens, a third lens and a fourth lens. The first lens has positive refractive power and the object side thereof may be a convex surface. The second lens and the third lens have refractive power and the object side and the image side thereof may be all aspheric. The fourth lens has negative power and the image side thereof may be a concave surface. The object side and the image side of the fourth lens are aspheric and at least one surface thereof has one inflection point. When meeting some certain conditions, the optical image capturing system may have outstanding light-gathering ability and an adjustment ability about the optical path in order to elevate the image quality.

Abstract: An optical image capturing system is provided. In the order from an object side to an image side, the optical image capturing system includes a first lens, a second lens, a third lens, and a fourth lens. The first lens has positive refractive power and the object side thereof may be a convex surface. The second lens and the third lens both have refractive power and the object side and the image side of the second lens and the third lens are all aspheric. The fourth lens may have negative refractive power, the image side of the fourth lens may be a concave surface, and the object side and the image side thereof are both aspheric. When meeting some certain conditions, the optical image capturing system may have outstanding light-gathering ability and an adjustment ability about the optical path in order to elevate the image quality.

Abstract: An optical image capturing system and an electronic using the same are disclosed. The optical image capturing system includes at least two lenses, an image plane, and a first position element. In certain condition, the design of the optical image capturing system may simantaneously inhibit the deviation of effect focal length and improve the imagining quality in response to temperature fluctuation.

Abstract: An imaging lens assembly includes first, second, third and fourth optical lens elements that are arranged sequentially from an object side to an image side along an optical axis. The first optical lens element and at least one of the second, third and fourth optical lens elements have positive refractive powers near the optical axis. At least one of object-side and image-side surfaces of at least one of the second to fourth optical lens elements is aspheric. The imaging lens assembly satisfies the following optical conditions: 0.7?|f/f1|?1.0, and HFOV?35 deg, in which, f and f1 represent focal lengths of the imaging lens assembly and the first optical lens element, respectively, and HFOV stands for half field-of-view of the imaging lens assembly.

Abstract: A five-piece lens set for capturing images, which includes a fixed aperture stop and an optical lens set, is disclosed. The optical lens set includes a first, a second, a third, a fourth and a fifth lens elements. The first lens element has negative refractive power adjacent to optical axis and a concave image side surface. The second lens element has negative refractive power adjacent to optical axis. The third lens element has positive refractive power adjacent to optical axis, both convex image side and object side surface. The fourth lens element has positive refractive power adjacent to optical axis and a convex object side surface. The fifth lens element has negative refractive power adjacent to optical axis and a convex image side surface. There is an interval between the image side surface of the fourth lens element and the object side surface of the fifth lens element.

Abstract: A five-piece lens set for capturing images, which includes a fixed aperture stop and an optical lens set, is disclosed. The optical lens set includes a first, a second, a third, a fourth and a fifth lens elements. The first lens element has negative refractive power adjacent to optical axis and a concave image side surface. The second lens element has negative refractive power adjacent to optical axis. The third lens element has positive refractive power adjacent to optical axis, both convex image side and object side surface. The fourth lens element has positive refractive power adjacent to optical axis and a convex object side surface. The fifth lens element has negative refractive power adjacent to optical axis and a convex image side surface. There is an interval between the image side surface of the fourth lens element and the object side surface of the fifth lens element.

Abstract: An imaging lens assembly includes first, second, third and fourth optical lens elements that are arranged sequentially from an object side to an image side along an optical axis. The first optical lens element and at least one of the second, third and fourth optical lens elements have positive refractive powers near the optical axis. At least one of object-side and image-side surfaces of at least one of the second to fourth optical lens elements is aspheric. The imaging lens assembly satisfies the following optical conditions: 0.7?|f/f1|?1.0, and HFOV?35 deg, in which, f and f1 represent focal lengths of the imaging lens assembly and the first optical lens element, respectively, and HFOV stands for half field-of-view of the imaging lens assembly.

Abstract: An imaging lens assembly includes first, second and third optical lenses that are arranged sequentially from an object side to an image side along an optical axis, and a constant-aperture diaphragm disposed between the second optical lens and the object side. Each of the first and second optical lenses has a positive refractive power near the optical axis. The third optical lens has a negative refractive power near the optical axis and has an object-side surface and an image-side surface, at least one of which has at least an inflection point. The imaging lens assembly satisfies: 0.55<f/Dg<0.85, in which, f is a focal length of the imaging lens assembly, and Dg is a length of a diagonal line of a maximum viewing angle in an imaging plane.

Abstract: An imaging lens assembly comprises a fixing diaphragm and an optical set including four lenses. An arranging order from an object side to an image side is: a first lens; a second lens; a third lens; and a fourth lens. At least one surface of the first and the second lenses is aspheric. At least one surface of the third and the fourth lenses are aspheric. The fixing diaphragm is disposed between an object and the second lens. By the concatenation between the lenses and the adapted curvature radius, thickness, interval, refractivity, and Abbe numbers, the assembly attains a big diaphragm with wide-angle, a shorter height, and a better optical aberration.

Abstract: A wide-angle imaging lens assembly comprises a fixing diaphragm and an optical set including two lenses. An arranging order from an object side to an image side is: a first lens with a positive refractive power, a convex surface directed toward the object side, and a convex surface directed toward the image side; and a second lens with a positive refractive power, a concave surface directed toward the object side, and a convex surface directed toward the image side. Two surfaces of the two lenses are aspheric. The fixing diaphragm is disposed between an object and the second lens. By the concatenation between the lenses and the adapted curvature radius, thickness/interval, refractivity, and Abbe numbers, the assembly attains a big diaphragm with ultra-wide-angle, a shorter height, and a better optical aberration.

Abstract: An imaging lens assembly includes first, second and third optical lenses that are arranged sequentially from an object side to an image side along an optical axis, and a constant-aperture diaphragm disposed between the second optical lens and the object side. Each of the first and second optical lenses has a positive refractive power near the optical axis. The third optical lens has a negative refractive power near the optical axis and has an object-side surface and an image-side surface, at least one of which has at least an inflection point. The imaging lens assembly satisfies: 0.55<f/Dg<0.85, in which, f is a focal length of the imaging lens assembly, and Dg is a length of a diagonal line of a maximum viewing angle in an imaging plane.

Abstract: A method for regulating air mattress pressure includes setting an initial first pressure; maintaining the first pressure stable with respect to an air mattress; setting a subsequent second pressure, wherein the second pressure is smaller than the first pressure; maintaining the second pressure stable with respect to the air mattress; computing a time interval for transferring from the first pressure to a stable condition of the second pressure; determining load and optimum pressure level of the air mattress through a database on the basis of the time interval; and charging air into the air mattress to the optimum pressure.