51results about "Record carrier cleaning" patented technology

A cleaning solution and method for removing submicron particles from the surface and / or the bevel of an electronic substrate such as a semiconductor wafer. The cleaning solution comprises a polycarboxylate polymer or an ethoxylated polyamine. The method comprises the step of contacting a surface of the substrate with a cleaning solution comprised of a polycarboxylate polymer or an ethoxylated polyamine. Additional optional steps in the method include applying acoustic energy to the cleaning solution and / or rinsing the surface with a rinsing solution with or without the application of acoustic energy to the rinsing solution.

The present invention discloses an active matrix type liquid crystal display device in a transverse electric field system, in which a high aperture factor can be ensured even at a narrow pitch, and a high contrast ratio and reduced vertical impact can also be ensured. In a liquid crystal display device, a substantially bank-shaped insulating film (208) forms a video signal line (204) and is covered by a common electrode (210), and a light-shielding electrode (213) is formed on the common electrode (210) from the video signal line (210). 204) below the part where the edge extends. With this arrangement, a liquid crystal display device is realized that shields light from one side of the stepped portion and ensures a high aperture coefficient and high contrast.

An optical disk polishing device which includes: a disk holder for rotatably holding an optical disk, the disk holder installed in a lower fixed portion; a cylindrical buff disposed in parallel with the surface of the optical disk and perpendicular to a rotary shaft of the disk holder in an offset manner; a drive motor to rotate the buff; and an upper opening-and-closing portion normally urged to an open state to the lower fixed portion by a spring or other member. The device makes it possible to clean a readout surface of the optical disk in a short period of time, and to be offered at a low price owing to the simple and small-sized structure thereof.

A method of manufacturing a disk drive device including: assembling a subassembly by fixing at least a bearing unit, a drive unit and a hub to a base member in a first clean room; cleaning the subassembly in a second clean room; and sealing the subassembly by a sealing member. The first clean room and the second clean room are communicated with each other by a communicating opening for transferring the subassembly, and an atmospheric pressure in the second clean room is equal to or higher than that in the first clean room.

An active matrix type liquid crystal display device in the lateral electric field system is disclosed, in which a high aperture factor is ensured even in a narrow pitch case, while also ensuring high contract and reduced vertical stroke is disclosed. In a liquid crystal display device, in which substantially bank-like third insulating film 208 is formed a video signal line 204 and covered by a common electrode 210, a light shield electrode 213 is formed underneath an extension of a common electrode 210 from an edge of a video signal line 204. With this arrangement, a liquid crystal display device is realized, which shields light from the sides of a step part as well as ensuring high aperture factor and high contrast.

The present invention holds a card-like electronic appliance, such as a semiconductor storage medium or an expansion module, and makes it difficult for dust, dirt and moisture to adhere to the card-like electronic appliance. The invention also makes it possible for card-like electronic appliances to be easily and appropriately held, stored, and organized, even when there are a large number of card-like electronic appliances. The card-like electronic appliance holder includes a holder main body with an appliance insertion hole into which at least part of a card-like electronic appliance is inserted, and is provided with a support part with a through-hole for hanging the holder main body. A convex part for engaging a concave part provided in the card-like electronic appliance and holding the card-like electronic appliance is provided inside the appliance insertion hole. Since card-like electronic appliances are held in this way, it becomes difficult for the card-like electronic appliances to become lost when kept separately, and dust, dirt, moisture, etc. can be kept from adhering to the card-like electronic appliance.

Methods, systems and apparatus for cleaning phonograph records are disclosed. In some embodiments, a phonograph record can be cleaned in a liquid basin using ultrasonic transducers, wherein the liquid basin has a dampening structure. Also, the ultrasonic transducers are disposed on a flexible wall for reducing vibrations of the cleaner.

A disc cleaner includes a disc rotation mechanism that rotates a disc (A), a cleaning member (14) for cleaning a reading surface during the rotation of the disc (A) and a press member that brings the cleaning member (14) into contact with a press member (16). The disc cleaner is provided with a movement mechanism that moves the press member (16) along the radical direction of the disc (A) during cleaning when the disc (A) rotates, and that allows the press member (16) to reach the outside of the recording region of the disc (A) when cleaning is completed.

In an optical disc apparatus for recording and / or reproducing data on an optical disc, a lens holder for holding an objective lens is dynamically moved not only in a direction perpendicular to a data recording face of an optical disc but also in a direction parallel to the data recording face and crossing substantially at right angle with data recording tracks on the data recording face when the optical disc is loaded on the optical disc apparatus so as to remove the sticking of the movement of the objective lens due to adhesion of dust, break or deformation of the components.