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Browse Prior Art Database

Structure Design for Liquid Crystal Display Module

IP.com Disclosure Number: IPCOM000117175D
Original Publication Date: 1996-Jan-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 4 page(s) / 84K

Publishing Venue

IBM

Related People

Natsuyama, Y: AUTHOR

Abstract

Disclosed is a structure design for Liquid Crystal Display (LCD) module which enables thin profile and low cost simultaneously. Fig. 1 (assembly drawing) and Fig. 2 (cross section) are current LCD module designs. Fig. 3 (assembly drawing) and Fig. 4 (cross section) show the example of this new structure design for LCD module. First, Fig. 5 shows the detail of Light-guide assembly. Light-guide, prism sheet (one or two sheets) and diffuser sheet have some adhesive tapes on each edge to form like one sheet. Therefore, it is easy to remove some foreign materials inside each gap because they are piled up. If they were stacked and have an adhesive tape on all, it would be impossible to do that.

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Structure Design for Liquid Crystal Display Module

      Disclosed is a structure design for Liquid Crystal Display
(LCD) module which enables thin profile and low cost simultaneously.
Fig. 1 (assembly drawing) and Fig. 2 (cross section) are current LCD
module designs.  Fig. 3 (assembly drawing) and Fig. 4 (cross section)
show the example of this new structure design for LCD module.  First,
Fig. 5 shows the detail of Light-guide assembly.  Light-guide, prism
sheet (one or two sheets) and diffuser sheet have some adhesive tapes
on each edge to form like one sheet.  Therefore, it is easy to remove
some foreign materials inside each gap because they are piled up.  If
they were stacked and have an adhesive tape on all, it would be
impossible to do that.

      Second, Fig. 6 shows the example of this new structure design
for backlight assembly.  Backlight frame changed from two pieces to
one piece.  Opening area of three sides except the opposite side of
Y-TAB side is extended in order to put light-guide assembly in frame.
Two bosses are added on the frame of Y-TAB side to fit two ditches on
light-guide.  These two bosses are fulcrum of light-guide assembly.
Design is to fix Z-direction of light-guide assembly by snap fit with
rib of LCD cell stopper.

      The number of backlight frames can be decreased from two to one
and can eliminate the thickness of LCD module by the wall thickness
because the rib of cell stopper has two functions.  Besides, the way
o...