Patent ID: 6692899
Filing Date: 2004-02-17
Classification: G02F

Abstract:
A method of forming a TFT-LCD device on a transparent insulator substrate wherein a transistor is defined on the transparent insulator substrate, the method comprising the steps of:forming a first passivation layer on said transparent insulator substrate to cover said transistor; etching said first passivation layer to form contact holes therein to expose a source structure and a drain structure of said transistor and to define a plurality of ridge bumps in a pixel electrode area on said transparent insulator substrate simultaneously, each ridge bump having a large inclined plane and a small inclined plane, forming a plurality of first hemi-spherical photoresist bumps on said large inclined plane of each of said ridge bumps; etching said ridge bumps by using said first hemi-spherical photoresist bumps as etching masks to make said large inclined plane of each said ridge bump rough; forming a pixel electrode on said first passivation layer, wherein said pixel electrode is filled into said contact holes to connect electrically to said drain structure; depositing a second passivation layer on said first passivation layer and said pixel electrode to cover uniformly said transistor for planarization; forming a plurality of second hemi-spherical photoresist bumps on said second passivation layer; and etching said second passivation layer by using said second hemi-spherical photoresist bumps as etching masks to make surfaces thereof rough.