ThinkVision L1940 19-inch Wide Flat Panel LCD Monitor - Overview


ThinkVision L1940 19-inch Wide Monitor (4434)
Machine Type - Models: 4434-AB1

Features and specifications
LCD size and type 19-inch (481 mm) LCD
Viewable image size 19-inch (481 mm)
Resolution 1440 x 900
Maximum viewable area 408.2 x 255.2 mm
Brightness (typical) 250 cd/m2
Contrast ratio (typical) 1000:1
Colors 16.7 million
Viewing angle (typical) Horizontal: +/- 160 degrees (at 10:1 contrast ratio)
  Vertical: +/- 160 degrees (at 10:1 contrast ratio)
Response time 5 ms
Pixel pitch 0.285 mm
Video input VGA Analog
Analog cable 1.8 m
Tilt 4 degrees forward
30 degrees backward
OSD languages 8
Factory-preset display modes 18
Composit SYNC Composite / Separate TTL
SYNC on Green No
USB input None
USB output None
Bezel width (Side) 15.0 mm
Soundbar Attachment Optional ThinkVision USB Soundbar
Kensington Lock slot Yes
User controls Digital
Lockable controls Yes
User defined display modes 20
VESA DDC capable 2B/CI
ISO 13406 Part 2 capable Yes
Power management capable Yes - VESA DPMS
Power supply Universal Voltage (100 to 240 Vac)
Power cord - detached 1.8 m
JEIDA compliance Yes
FCC B compliance Yes
MPR-2 emission compliance Yes
MPR-3 emission compliance Yes
TCO'03 Environmental Label Yes
EU Directive 2002/95/EC (RoHS) Yes
EU Directive 2002/96/EC (WEEE) Yes
China RoHS Yes

Physical specifications
Width 17.33-inch (440.2 mm) 20.71-inch (526 mm)
Depth 7.03-inch (178.6 mm) 15.28-inch (388 mm)
Height 14.97-inch (380.3 mm) 6.77-inch (172 mm)
Weight 9.15 lb (4.15 kg) 12.96 lb (5.90 kg)

Power requirements
  • Input voltage: 90 to 264V ac
  • Frequency: 50/60 Hz
  • Power consumption:
    • Maximum: 22 watts
    • Normal use: 17 watts typical
    • Standby: < 1watts
    • Suspend: < 1watts
    • Off: < 0.5 watt
    • Maximum earth leakage current:
      • < 3.5 mA at 264 V
      • < 0.25 mA at 100 V

Ambient temperature and relative humidity
ParameterTemperatureRelative humidityAltitude
Operating 0 to 45 deg. C 10 to 80 % 0 to 2,4384 m
Shipping -20 to 60 deg. C 5 to 95 % 0 to 12,192 m
Storage -20 to 60 deg. C 5 to 95 % 0 to 12,192 m


Declared acoustical noise emissions LWAU = 4.5 bels or less. The noise emission level stated is the declared (upper limit) A-weighted sound power level, in bels, for a random sample of monitors. All measurements are made in accordance with ANSI S12.10 and reported in conformance with ISO/DIS 7779.

  • One monitor
  • Attached tilt stand
  • Attached 1.8-meter (5.9-foot) analog video signal cable (15-pin D to 15-pin D)
  • Power cord
  • A CD containing multilingual user's guide, set-up test pattern, and .INF file
  • Setup guide
  • Safety and warranty information

Note: With the exception of the models for U.S., Canada, and Japan, the power cords (based on the country order code) are supplied by distribution centers.


Three years - Customer Carry-in or Mail-in using Rapid Replacement Service

  • Announce date: 17 Sep 2008 (Europe/Middle East/Africa)
  • Planned availability date: 19 Sep 2008 (Europe/Middle East/Africa)

Hardware compatibility

The display is intended to operate with system units or video adapters that generate a video output signal falling within the following specification:

Native Resolution 1440 x 900 pixels
Maximum pixel rate 137 MHz

The monitor supports VESA Standard Timings as detailed in "Display Monitor Timing Specification," Version 1.0, Revision 0.8, dated September 17, 1998, for the following modes:

  • VGA: 640 x 480 at 60, 72 and 75 Hz
  • SVGA: 800 x 600 at 56, 60, 72 and 75 Hz
  • XGA: 1024 x 768 at 60, 70, and 75 Hz
  • SXGA: 1280 x 1024 at 60, 70 and 75 Hz
  • WXGA+: 1440 x 900 at 60 and 75 Hz

This monitor also supports the following modes:

  • PAL VGA at 50 Hz
  • 640 x 350 at 70 Hz
  • 640 x 480 at 66 Hz
  • 720 x 400 at 70 Hz
  • 832 x 624 at 75Hz
  • 1152 x 864 at 75Hz
  • 1280 x 1024 at 76 Hz

Note: National language support is a function of the video adapter in the system unit and the application or support software.

Preset Display Modes
(H x V Pixels)
Incoming video refresh rate
640 x 350 70 Hz NI
640 x 480 60 Hz NI
66 Hz NI
72 Hz NI
75 Hz NI
720 x 400 70 Hz NI
800 x 600 56 Hz NI
60 Hz NI
72 Hz NI
75 Hz NI
832 x 624 75 Hz NI
1024 x 768 60 Hz NI
70 Hz NI
75 Hz NI
1152 x 864 75 Hz NI
1280 x 1024 60 Hz NI
70 Hz NI
75 Hz NI
1440 x 900 ** 60 Hz NI** (Optimum Display Mode)
1440 x 900 75 Hz NI
Note**: This is the optimum display mode for the best displayed image. Reduced image quality may result if used in other modes due to the image scaling limitations of LCD monitor technology.
  • User modes: 20

The factory-preset modes cannot be overwritten, but can be adjusted to personal choice. The new settings are stored automatically in one of the user locations and are recalled each time that mode is used. The factory settings for the mode in use, if any, can be restored by operating the reset control.

Information about the current incoming display mode is shown in the on-screen displays. However, it is displayed at the LCD panel's optimum refresh rate of 60 Hz.

It may be necessary to make some adjustments to the displayed image to compensate for variations in video signal timings. The user controls can be used to make these adjustments.

The ThinkVision L1940 19-inch Wide LCD monitor (4415-AB1) is supplied with a detachable 1.8-meter (5.9-foot) analog video signal cable.

This model has been tested with ThinkPad and ThinkCentre systems. It is compatible with systems and graphics adapters that comply with the relevant parts of "VESA and industry standards and guidelines for computer display monitor timing" V1.8, adopted September 17, 1998. Supported display modes and number of colors are a function of the attaching system unit. The full range of display modes, refresh rates, and number of colors available with this monitor may not be available or supported with all combinations of system units, their operating systems, and application software. Implementation of monitor Plug and Play follows the VESA DDC standard. This standard must also be implemented in the attaching system unit hardware and software to be effective.

Software requirements
  • Microsoft Windows Vista
  • Microsoft Windows XP

Ergonomics/Emissions/Environmental/Compatibility Approvals
  • TCO'03 Environmental Label
  • MPR-2
  • ISO/DIS 13406 Part 2
  • Software: Microsoft 2000/XP
  • EU Directive 2002/96/EC - WEEE
  • EU Directive 2002/95/EC - RoHS
  • EPA
  • GS

Agency approvals - EMI/Safety

IEC950 CB Report, NEMKO (Norway), SEMKO, DEMKO (Denmark), FIMKO (Finland), TUV (Germany), TUV-S (Argentina), SASO (Saudi Arabia), GOST (Russia), South Africa

  • Supported display modes are a function of the attaching system unit and video subsystem. The full range of display modes available with these monitors may not be available or supported with all combinations of system units, their operating systems, video adapter cards, and application software.
  • Horizontal- and vertical-synchronization signal timings are critical in order to achieve acceptable screen images. As a consequence, support for all possible variations in H- and V-sync timings for any display mode cannot be assumed.
  • Adjustment of the user controls to enlarge the image to its maximum size requires that the signal timings of the display mode being used fall within the monitor-timing specifications.
  • The number of colors shown in any display mode (up to a maximum of 16.7 million) is not limited by the monitor, but depends on the capabilities of the video adapter in the system unit..
  • Implementation of monitor power management follows the VESA DPMS standard. This standard must also be implemented in the attaching system unit hardware and software for monitor power management to be effective. The system implementation must provide user-adjustable, power-down delay periods. The monitor power management function is invoked only after appropriate signals are received from an attached system unit or video adapter.
  • Implementation of monitor Plug-And-Play follows the VESA DDC standard. This standard must also be implemented in the attaching system unit hardware and software for monitor Plug-And-Play to be effective.
  • Certain functions require the system unit to be similarly configured, so all monitor functions may not be enabled when attached to a particular system unit.
  • A 19.0-inch Wide TFT monitor has nearly 4 million subpixel transistors laid over an area exceeding 162 square inches. Cost-effective manufacturing processes introduce a small number of defective subpixel transistors. The Lenovo ThinkVision L1940 Wide meets ISO 13406-2 Class II Pixel defect standard.
  • The auto-setup "test pattern" can be used with Windows 3.1, Windows NT 3.5, Windows NT 4.0, Windows 95, Windows 98, Windows 2000, Win- dows XP, and DOS 7.0 only.

Additional Product information
Configuration files - Relevant files for your product
Service parts - Parts listing for your product
Publications - Instruction manual for your product
Troubleshooting - Step-by-step instructions for solving common monitor issues
Lenovo ThinkVision Monitors ( ) - ThinkVision monitor information
Lenovo Support: Monitors - Reference Guide - A list of monitors
Lenovo Support: Monitor Accessories - Reference Guide - A list of monitor accessories (stands, arms, displayport cables, cable locks, soundbars)
Lenovo Support: DisplayPort Cables - Product and compatibility information for DisplayPort monitor cables
Lenovo Support: Graphic Cards - Reference Guide - A list of graphic cards for desktop and workstation systems
Lenovo Support: Accessories - Reference Guide - A list of accessories for notebook, desktop, workstation, server accessories - Additional information on options and accessories, including the Option Compatibility Matrix (OCM)
Personal Systems Reference (PSREF) - Comprehensive information on the features and technical specifications on Lenovo products
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  • Alias ID: MIGR-71596
  • Document ID: PD012371
  • Last Updated :26 Mar 2014
  • © 2015 Lenovo