Lcd Display - Nokia RH-27 Series Technical Documentation Manual

RH-27
System Module
VBAT
Cin
V in
DLIGHT En
Cx
Cosc
Figure 5: Shared LED driver circuit for LCD and keyboard backlight
LCD Backlight
LCD Backlight consists of two white LEDs, which are integrated with the LCD module.
Keyboard Illumination
The keyboard light consists of six white LEDs on the UI board. They are placed under the
keyboard for proper illumination of the keypad.

LCD Display

The LCD is a CSTN 130 x 130, ful-dot matrix display with 12bit (4096 colors) color reso-
lution and a single pixel border area around the content area, which makes the total
active area 128 x 128 pixels.
LCD parameter
Glass size, width x height x thickness
Glass thickness
Viewing area (width x height)
Active pixel area (width x height)
Number of pixels
Technology
Operating temperature range
Main viewing direction
Illumination mode
Color tone
Background:
Page 12
Coil
Schottky
Is
Ext
Vovp
LED Driver
FB
Gnd
Table 4: LCD general specifications
© 2003 Nokia Corporation
CCS Technical Documentation
Cout
Rlcd
LCD Illumination
Value
33.98 mm x 37.95 mm x 1.71 mm
0.50 mm
30.29 mm x 30.29 mm
27.29 mm x 27.29 mm
130 x 130 pixels
CSTN (color super twisted nematic)
o o
-25 C to +70 C
6 o'clock
transflective
Neutral/Black
Confidential
R
Keyboard Illumination
Issue 1 11/2003