Anisotropic conductive tape and preparation method thereof

Abstract

The invention provides anisotropic conductive tape and a preparation method thereof. The anisotropic conductive tape comprises a resin baseband and multiple pieces of composite fibers arranged transversely in the resin baseband, each piece of the composite fiber comprises electrical insulating fiber and multiple conductive rings annularly sleeving the electrical insulating fiber, each conductive ring comprises multiple conductive particles jointly surrounding the corresponding electrical insulating fiber through adsorption, wherein multiple pieces of the composite fiber are arranged periodically in the resin baseband in the extending direction of the resin baseband, the conductive rings on each piece of the composite fiber are arranged periodically in the axial direction of the corresponding electrical insulating fiber of the composite fiber, because the conductive rings are fixed on the surface of the corresponding electrical insulating fiber, the conductive rings and the electrical insulating fiber are all not easily squeezed out of an electrode bump region during bonding, even if when the area of electrode bumps is reduced, the electrode bumps can still be in good contact with the conductive rings, thereby being capable of achieving the design of more driving circuits on a display panel, and being capable of effectively increasing the resolution ratio of the display panel.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an anisotropic conductive adhesive tape and a manufacturing method thereof. Background technique [0002] Existing flat panel display devices on the market include liquid crystal display devices (Liquid Crystal Display, LCD) and active-matrix organic light emitting diode (Active-matrix organic light emitting diode, AMOLED) display devices. Among them, AMOLED has the characteristics of self-illumination, high brightness, wide viewing angle, high contrast, flexibility, low energy consumption, etc., so it has received widespread attention, and as a new generation of display methods, it has gradually replaced traditional liquid crystal displays and is widely used in Mobile phone screens, computer monitors, full-color TVs, etc. [0003] Existing flat-panel displays generally include a display panel (Panel) and an external circuit. When the display panel is normally displayed, an ext...

AI Technical Summary

Problems solved by technology

The low density of conductive particles limits the number of conductive particles distributed in each bump, and if figure 1 As shown, the conductive particles in the existing ACF are randomly distributed, so in order for each bump to capture a certain number of conductive particles, the area of ​​the bump must be increased accordingly, which affects the realization of more driving circuit designs

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