Abstract:
To provide a chip on flex (COF) tape having an improved precision of cumulative pitches while retaining bending properties. [Means to Solve the Problems] A chip on flex (COF) tape having a wiring pattern comprising a plurality of wirings arranged in parallel formed on the surface of a flexible insulating film, wherein a dimension retention pattern is formed on said surface of said flexible insulating film and/or the surface of the side of the film opposite thereto so as to cross the width direction of at least two of said wirings arranged in parallel in the vicinity of the connecting portion of said wiring pattern with a semiconductor chip and/or the connecting portion with an external device.
Abstract:
The present invention provides a manufacturing method capable of mass production of a thin film decoupling capacitor provided with a capacitor circuit on the surface of a film tape carrier form of a polyimide resin or the like. For the purpose of achieving the above described object, there is provided a film carrier tape with a capacitor circuit, including a wiring pattern on the surface of a resin film including a plurality of sprocket holes on each of the two edges, wherein the resin film includes solder ball land holes and the wiring pattern includes a capacitor circuit having a structure in which a dielectric layer is disposed between an upper electrode and a lower electrode. As the method for manufacturing the aforementioned film carrier tape, there is provided such a method for semicontinuously manufacturing the film carrier tape concerned in the state of tape as applied to manufacturing conventional TAB products.
Abstract:
To provide a resin composite film which is assured of high insulating performance and excellent mechanical properties, to allow for bending, and gives a flexible printed circuit excellent in the adhesive property. A resin composite film comprising a resin A layer having formed on at least one surface thereof a resin B layer, wherein the thickness of the resin B layer is from 0.1 to 4 μm and the resin B layer comprises an insulating material capable of giving a film having a thickness of 10 μm and a water absorptivity of 0.03 to 0.25%. When a metal layer is formed on the resin B layer surface of this resin composite film, a metal-resin composite film is obtained.
Abstract:
A method for manufacturing an electronic part, including: cutting a wiring substrate, which contains a base substrate, a wiring pattern provided on a first surface of the base substrate, and a reinforcing member provided on a second surface of the base substrate, along a line intersecting with an outer circumference of the reinforcing member; wherein a wire, out of a plurality of wires composing the wiring pattern, arranged closest to an intersecting point of the outer circumference of the reinforcing member and the line has a widest width.
Abstract:
In one form of the invention, a laser beam propagates directly through bulk material of a TAB tape or base, to heat and form a bond between electrical leads formed on the base and aligned contact bumps. In another form, a chromium seed-metal layer is formed on a TAB tape or base, and leads are in turn formed on the chromium; the chromium absorbs a laser beam to heat the leads. In both forms, an optical fiber preferably presses copper leads and gold bumps together with over 300 g force, without aid by a gas stream—and then also conducts the beam to the bond site, forming a bond of shear strength over 200 g. Also preferably gold contacts are plated on the leads; and the method makes an inkjet printhead—with the bumps formed on a die or other printhead component, and nozzles formed through the base.
Abstract:
A display device includes a first conductive layer formed on a substrate, an insulating layer formed on a portion of the first conductive layer and having a flat plane and an edge, and a second conductive layer continuously formed on the flat plane of the insulating layer, on the edge of the insulating layer, and on another portion of the first conductive layer. The edge of the insulating layer has a region so that an angle formed between the edge of the insulating layer and the first conductive layer is changed to be small at a side near to the first conductive layer.
Abstract:
Disclosed is a tape carrier package for electrically connecting LCD panel with source and gate driver PCBs and an LCD module to which the tape carrier package is applied. The tape carrier package includes: a first flexible film made of insulator; a conductive pattern formed on the first flexible film and having a plurality of input/output leads each having an input terminal and an output terminal; a semiconductor chip having a plurality of input/output terminals electrically connected with the input/output leads of the conductive pattern; and a second film made of insulator, the second film coating the conductive input/output leads such that the input/output leads are exposed by a selected length from respective ends thereof, wherein at least one selected lead of the input/output leads disposed at at least one sided end of the tape carrier package comprises a first portion and a second portion which is wider than the first portion, the second portion extending from a first selected position of the exposed leads to a second selected position of the second film passing over a boundary between the second film and the exposed leads.
Abstract:
An active matrix type liquid crystal display device having a first and a second substrate with a liquid crystal layer therebetween, a plurality of drain lines and gate lines formed on the first substrate and crossing each other in a matrix form, and a plurality of counter signal lines formed on the first substrate and extending along an extension direction of the gate lines. Pixels are delimited by adjacent ones of the drain lines and the gate lines. A counter signal line connects counter electrodes of neighboring pixels which are arranged with a drain line therebetween by crossing the drain line, and the counter electrodes of neighboring pixels which are arranged with a gate line therebetween are electrically connected by a connecting member. The connecting member is arranged so as to be spaced with respect to the drain line in plane view.
Abstract:
A semiconductor device has a plurality of first pads to a plurality of fourth pads laid out in a first direction, thereby forming first to fourth pad rows. The first to fourth pad rows are laid out in the named order in a second direction orthogonal to the first direction. First to fourth leads are respectively connected between the first to fourth pad rows and a semiconductor chip. A first slanted side inclined to the first direction is formed at each second pad at that corner which lies on that side of the third pad row. A second slanted side inclined to the second direction in such a way as to face the first slanted side is formed at each third pad. Each first lead has a first slanted portion provided between the first slanted side and the second slanted side and extending in a direction oblique to the first direction.
Abstract:
A tape circuit substrate and semiconductor apparatus employing the same, and a method for forming a tape circuit substrate may reduce or eliminate electromagnetic interference (EMI) and provide a substrate or apparatus which can supply a more stable power supply voltage. The tape circuit substrate may include an insulation film and a wiring pattern formed on the insulation film to define an electronic device-mounting region and including a ground electrode. The tape circuit substrate may include a ground electrode pattern formed at the electronic device-mounting region so as to be insulated from the wiring pattern, except where the ground electrode pattern is connected to the ground electrode.