Last Revised
AST RESEARCH, INC. INFORMATIONAL BULLETIN # 0054 10/14/97
TITLE: AST Display Quality Standard
SUMMARY
This document serves as a guide to determine acceptable defect
criteria of the AST 13.3" TFT display.
This bulletin refers to mobile systems using the AST 13.3" TFT
display panel.
NOTES
AST specification defines a section called "Display Appearance
Inspection Criteria" which outlines the maximum allowed defects.
Appearance criteria for the AST 13.3" Display Panel:
Line of View shall be at 90 degrees.
Max. Defect Pixels
Allowed
Bright Dot/Single
Random 11
Green 5
Two Adjacent (Connected) 2
Dark Dot/Single
Random 11
Two Adjacent 4
Three Adjacent 3
Four or More Adjacent Not Allowed
Total Defect Pixels Allowed on a Panel: 21 or less combined
single and multiple dots
Minimum Distance Between Defects:
Bright Dot to Bright Dot 15mm
Dark Dot to Dark Dot 5mm
Definitions:
Bright/Dark Dot - A sub-pixel (R, G, B, dot) stuck ON/OFF
Multiple connected dots - Seen as small scratch/line or large
dot.
TAN N/A
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The information in this data sheet is subject to change without
notice. AST Research, Inc. shall not be liable for technical or
editorial errors or omissions contained herein; nor for incidental
or consequential damages resulting from the furnishing, performance,
or use of this material. This material contains information protected
by copyright. No part of this material may be reproduced in any form
without prior written consent from AST Research, Inc.
All rights reserved.
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