摘要:
A method of manufacturing a collection of variable focus lenses comprising two electrodes (21, 22) and a fluid chamber filled with two fluids which are separated by a meniscus, wherein the shape of the meniscus is variable under the influence of a voltage, comprises the following steps: providing an electrically insulating body (60) having a plurality of through-holes (14, 65); applying electrically conducting material to a surface of the body (60) in order to obtain the electrodes (21, 22); covering at least one of the obtained electrodes (21, 22) by a layer of electrically insulating material; covering an inner surface of a part of the through-holes (14) with a hydrophobic material; partially sealing these through-holes (14); arranging the fluids inside the partially sealed through-holes (14); completely sealing the through-holes (14); and dividing the body (60) into portions, such that each portion constitutes a complete lens.
摘要:
The electrowetting cel (15) that is primarily to be used as a variable focus lens, comprises a liquid chamber (50) containing a first and a second immiscible fluid (51, 52), which are in contact across a meniscus (14) and of which the first fluid (51) is a polar and the second (52) is electrically conductive. The liquid chamber (50) is provided with an inner face (18), at which a fluid contact layer (10) is present, which has an inherent attraction to the first liquid. An electrode is separated from the liquid chamber (50) through this fluid contact layer (10). The fluid chamber (50) is constructed such that it has a small diameter at an operating point (101) at the inner face (18) than at a point of tangency (102), while a tangent (R1) to the operating point (101) encloses a smaller angle with the optical axis (OA) of the cell (15) than a tangent (R2) to the second point (102). This results in the fact that the meniscus (14) that touches the inner wall (18) at the second point (102) is oriented towards the optical axis and that the cell (15) can have a low construction height.
摘要:
An electrowetting cell including an expandable joint between a body section and an end section. Such an expandable joint could include a membrane or a flange-like portion.
摘要:
The device has a carrier and an electric element. The carrier has a first and an opposed side and is provided with a connection layer, an intermediate layer and contact pads. The element is present at the first side and coupled to the connection layer. The element is at least partially encapsulated by an encapsulation that extends into isolation areas between patterns in the intermediate layer. A protective layer is present at the second side of the carrier, which covers an interface between the contact pads and the intermediate layer.
摘要:
The present invention relates to a laser projection system (1) having means for reducing the coherence of a generated laser beam (3) in order to reduce the occurrence of annoying speckle artefacts in images produced by the system. Coherence is reduced by letting the laser beam (3) pass through a transparent cell (6) comprising first (A) and second (B) immiscible fluids having different refractive indices. The fluids are displaced in the cell, preferably using an electrowetting technique. The cell (6) may thus be realised as an electrowetting lens, which is driven with a pseudo random driving signal.
摘要:
A variable focus lens package (1) comprises an annular body (10) having a through-hole (11), which is closed off by means of lens members (30, 70), and which is sealed by means of sealing rings (50, 60). The through-hole (11) is filled with quantities of water (86) and oil (87), which are separated by a meniscus (88). A portion of the surface of the body (10) is covered with an electrically conducting layer (16). The shape of the meniscus (88) is variable under the influence of a voltage between this electrically conducting layer (16) and the water (86). In this way, the meniscus (88) is applicable as a lens having an adjustable focus. One of the sealing rings (60) is arranged such as to be capable of expanding and shrinking along with the fluids (86, 87), to an extent which is sufficient for compensating for volume variations in these fluids (86, 87).
摘要:
The invention relates to an electric insulating body (2) provided with a conductor pattern (1) and an electronic device (10) comprising such a body (2) and at least one electronic element (30). According to the invention, the body (2) has first and second faces (2A, 2B) in between of which an angle of less than 180 degrees is defined, wherein the conductor pattern (1) of the body (2) extends over both faces (2A, 2B), which body (2) carries both the conductor pattern (1) and the electronic element (30). The conductor pattern (1) comprises strip-shaped regions (1A) and regions (1B) with a larger width than the strip-shaped regions (1A), which regions (1B) are suitable for electrically contacting the electronic element (30). The electronic element (30) is, for example, a camera. The device (10) with such a camera is particularly suitable for use in a mobile communication apparatus.
摘要:
The electronic device (100) comprises an electrical element (30), for instance a MEMS capacitor or a BAW filter in a cavity (37) that is protected from the environment by a cover (38). The cover (38) is a patterned layer which is mechanically embedded in isolating material (7) present beside the cavity (37) and may further include contact pads (41). The device (100) may be suitably manufactured from an accurately folded foil including a patterned layer and a sacrifice layer. After applying the foil to the cavity (37) the isolating material (7) is provided and the sacrifice layer is removed. The patterned layer, or part thereof, stays behind and forms the cover (38).
摘要:
The invention relates to a method of manufacturing a semiconductor device (10), wherein a semiconductor element (1) provided with a number of connection regions (2) is fitted between a first, electroconductive plate (3) and a second plate (4), wherein two connection conductors (3A, 3B) are formed, from the first plate (3), for the two connection regions (2A, 2B) of the element (1), wherein a passivating encapsulation (5) is provided between the plates (3, 4) and around the element (1), and wherein the device (10) is formed by applying a mechanical separating technique in two mutually perpendicular directions (L, M).In a method according to the invention, the connection conductors (3A, 3B) are formed by providing a mask (6) on the first conducting plate (3) in such a manner that a part (3C) of the plate (3) situated between the connection regions (2A, 2B) remains exposed, which part is subsequently removed by etching. Such a method enables a very compact discrete or at least semi-discrete semiconductor device (10) to be readily obtained at low cost, while a high yield is achieved. In a preferred embodiment, also further parts (3D) of the conducting plate (3) situated at the location where the device (10) is to be sawn, cut or broken remain uncovered by the mask (6) and are removed during etching.
摘要:
The electronic device (100) comprises a body (20) with a cavity (30) wherein a semiconductor element (10) and a thermally conductive layer (33) are present. The cavity (30) is filled with an encapsulation (35) of an electrically insulating material wherein contact faces (47, 48) are mechanically anchored.