Abstract: Trenches in which to form a back side isolation structure for an array of CMOS image sensors are formed by a cyclic process that allows the trenches to be kept narrow. Each cycle of the process includes etching to add a depth segment to the trenches and coating the depth segment with an etch-resistant coating. The following etch step will break through the etch-resistant coating at the bottom of the trench but the etch-resistant coating will remain in the upper part of the trench to limit lateral etching and substrate damage. The resulting trenches have a series of vertically spaced nodes. The process may result in a 10% increase in photodiode area and a 30-40% increase in full well capacity.

Abstract: A laptop computer includes a base, a touch screen, a first hinge structure and a second hinge structure. The first hinge structure is pivotally connected with a side of the base. The second hinge structure is pivotally connected with the first hinge structure. The second hinge structure includes a locking part. The locking part detachably fastens to the touch screen. When the locking part fastens to the touch screen and the angle between the touch screen and the base is within 0 degree and a predetermined angle, the second hinge structure rotates relative to the first hinge structure. When the locking part fastens to the touch screen and the angle between the touch screen and the base is larger than the predetermined angle, the first hinge structure and the second hinge structure rotate synchronously relative to the base.

Abstract: A laptop computer includes a base, a touch screen, a first hinge structure and a second hinge structure. The first hinge structure is pivotally connected with a side of the base. The second hinge structure is pivotally connected with the first hinge structure. The second hinge structure includes a locking part. The locking part detachably fastens to the touch screen. When the locking part fastens to the touch screen and the angle between the touch screen and the base is within 0 degree and a predetermined angle, the second hinge structure rotates relative to the first hinge structure. When the locking part fastens to the touch screen and the angle between the touch screen and the base is larger than the predetermined angle, the first hinge structure and the second hinge structure rotate synchronously relative to the base.