Browse Prior Art Database

Flat Cell Structure for Active Matrix LCD

IP.com Disclosure Number: IPCOM000121642D
Original Publication Date: 1991-Sep-01
Included in the Prior Art Database: 2005-Apr-03
Document File: 3 page(s) / 97K

Publishing Venue

IBM

Related People

Suzuki, S: AUTHOR [+2]

Abstract

Disclosed herein is a flat cell structure wherein the layer thickness which means the distance between a glass substrate and a counter glass substrate is well equalized along a cell sealing region. This structure eliminates glass distortion and improves display quality.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 74% of the total text.

Flat Cell Structure for Active Matrix LCD

      Disclosed herein is a flat cell structure wherein the
layer thickness which means the distance between a glass substrate
and a counter glass substrate is well equalized along a cell sealing
region.  This structure eliminates glass distortion and improves
display quality.

      Fig. 1 shows a conventional structure.  In Fig. 1, an active
glass substrate 2 has gate lines 4 along a horizontal direction and
data lines 6 along a vertical direction.  The data line 6 is usually
thicker than the gate line 4 by about one micrometer.  The layer
thickness was the total value of the height of the lines 4 and 6 and
the height of a spacer 10 which runs along the cell sealing region.
This prior art structure results in lack of uniformity in the layer
thickness along the sealing region.

      Fig. 2-a shows a part of a new structure which is around the
vertical sealing region.  Along a surrounding seal 8, a data line
film 16 is formed over an insulator layer 12 which covers the gate
line 4.  Fig. 2-b shows another part of the new structure which is
around the horizontal sealing region.  Along the surrounding seal 8,
the data line 6 is formed over the insulator layer 12 which covers a
gate line film 18.  The thickness of the layers is controlled to the
same value along the surrounding seal area, preventing the electrical
short between electrical lines.  As a result, the layer thickness is
well equalized along the surroun...