Browse Prior Art Database

New manufacturing process of the metal bezel for the Liquid Crystal Display

IP.com Disclosure Number: IPCOM000013468D
Original Publication Date: 1999-Nov-01
Included in the Prior Art Database: 2003-Jun-18
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Yoshifumi Natsuyama: AUTHOR

Abstract

Disclosed is a manufacturing process of the metal bezel for the LCD (liquid crystal display), which becomes low cost and more robust than that of the current process.

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New manufacturing process of the metal bezel for the Liquid Crystal Display

    Disclosed is a manufacturing process of the metal bezel for the LCD (liquid
crystal display), which becomes low cost and more robust than that of the current
process.

  Figure shows an example of the disclosed new manufacturing process of the metal
bezel for the LCD, and the details of each processes are as follows,
In the 1st process, metal base plate is pressed to a long and narrow trapezoid
of which a long base is the quite same length as an outline of the bezel, a short
base is about five millimeters shorter than an open area of the bezel, and width
(height) is about two millimeters longer than width of the bezel.

  In the 2nd process, the trapezoid metal plate is welded on both edges together,
therefore it changes into a frustum of a cone of which a small circumference is
about five millimeters shorter than an open area of the bezel and a big
circumference is the quite same length as an outline of the bezel.

  In the 3rd process, the frustum of a cone is pressed to box shape by using a
press machine again. The bezel completes except the open area after 3rd process.
Finally in the 4th process, it is pressed to make the open area by using a press
machine further. And the bezel fully completes.

  Material cost is compared between current process and new process for 14.1 inch
LCD.

  Required material for the current process is
(Length of development of the bezel) x (Width of development of the bezel) = 270
x 340...