PRODUCT GROUP

REV.

ISSUE DATE

TFT-LCD PRODUCT

A

2003.07.22

PAGE

SPEC. NUMBER

S864-1148

SPEC. TITLE

HT12X21-100 Product Specification

8

OF

22

B3-002-O (3/3)

A4 (210 X 297)

Note:

1. Viewing angle is the angle at whic h the contrast ratio is greater than 10. The viewing are

determined for the horizontal or 3, 9 o’clock direction and the vertical or 6, 12 o’clock direction with

respect to the optical axis which is normal to the LCD surface (see FIGURE 1 shown in Appendix).

2. Contrast measurements shall be made at viewing angle of È= 0

° and at the center of the LCD

surface. Luminance shall be measured with all pixels in the view field set first to white, then to the

dark (black) state. (See FIGURE 1 shown in Appendix) Luminance Contrast Ratio (CR) is defined

mathematically.

Luminance when displaying a white raster

CR =

Luminance when displaying a black raster

3. Luminance of white is defined as a center point(#1) on LCD surface. Luminance shall be

measured with all pixels in the view field set first to white. This measurement shall be taken at the

locations shown in FIGURE 2 for a total of the measurements per display.

4. The White luminance uniformity on LCD surface is then expressed as : ÄY = Maximum

Luminance of 5 points / Minimum Luminance of 5 points (see FIGURE 2 shown in Appendix).

5. The color chromaticity coordinates specified in Table 4 shall be calculated from the spectral data

measured with all pixels first in red, green, blue and white. Measurements shall be made at the

center of the panel.

6. The electro-optical response time measurements shall be made as FIGURE 3 shown in

Appendix by switching the “data” input signal ON and OFF. The times needed for the luminance to

change from 10% to 90% is Tr, and 90% to 10% is Td.

7. Cross-Talk of one area of the LCD surface by another shall be measured by comparing the

in Appendix).