Lexel Imaging Systems

1500 Bull Lea Road, Suite 150

Lexington, KY 40511

PH (859) 243-5500

FX (859) 243-5555

 

 

 

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Microdisplay Products

In addition to manufacturing a variety of miniature CRTs, Lexel offers a line of flat panel microdisplays.  These displays are less than 1”, light weight, low power, high resolution and low cost.  The technology is based on fast ferroelectric liquid crystal on silicon (FLCOS) which make them ideally suited for a wide array of applications.

The general market for microdisplays is largely viewfinders for camcorders and digital still cameras.  However, these displays are well suited for any application requiring low power and light weight in either monochrome or full color.  Microdisplays are expanding into markets for:

Head Mounted Displays                                  Individual Soldier Applications

    Simulation                                                           Hand Held Portable Displays

        Night Vision                                                        Rifle Sights

            Range Finding                                                    Medical

                Thermal Imaging                                                  Projection

                   

Technology

A microdisplay is a flat panel display less than one inch in diagonal, viewed through the use of magnification or projection optics.  The display itself creates a high resolution image, typically smaller than a postage stamp, and is a critical component in displays for a wide variety of consumer products.  Liquid crystal microdisplays allow the manipulation of light by electronic circuitry, enabling both operation at low applied voltages and easy fabrication in a wide variety of forms.

The primary difference between these ferroelectric liquid crystals (FLCs) and other liquid crystals is that FLCs are capable of switching ten to one hundred times faster.  This means that FLC displays can be completely digital, employing highly accurate time division grayscale, as well as enabling smear-free motion video and single-panel projection.  Other FLC benefits include smaller pixels allowing both higher resolution and smaller, low-cost silicon die --as well as wider optical acceptance angles.

Products

Model LDM-0311-DN is the world’s first single-chip near to eye display solution.  It was designed for viewfinder applications, as well as any device requiring excellent image quality in a low power, compact package.  The LV311 Display Module is a complete solution, incorporation the display panel with integrated interface and control circuitry, as well as the LED illumination and polarization optics.  The unit is also available with a choice of two different 15x viewing optics.  Detailed technical features can be read in the LDM-0311DN (digital) product data sheet and Engineering Specification.

An evaluation kit LDM-311-EK is also available.

Model NDP-0090-MV5 is an NTSC monochrome video display module.  The unit has a resolution of 400x225 monochrome pixels within a .24inch (6.00mm) array diagonal.  Detailed technical features can be read in the NDP Engineering Specification.   This unit is also available with an 18x viewing optic.

General Product Specifications 

Product                                         LV311                                          Monochrome            

Engine Specifications

Format                                           432x240                                        400x225

Color                                             Sequential                                     Monochrome (white)

Color Depth                                    24 bits                          

Frame Rate                                   120Hz                                            60/50Hz

Field of View                                  17.4º                                             20º

Fill Factor                                      >90%                                            88.7%

Pixel Pitch                                     12.0μM                                         12.0μM

 

Brightness                                    250cd/m²                                       200cd/m²

Contrast Ratio                                100:1                                            200:1

White Color Temperature                 6500K                                          10,000K

 

Electrical

Interface                                        digital                                           Analog

Display Panel                                3.3V                                               3.3V

LED Illuminator                              5.0V                                               5.0V

 

Power Consumption

Total Module                                 175mW                                        150 mW

Low Power Mode                          <50mW                                         20 mW

 

Mechanical

Dimensions (LxWxH)                   20.0x18.8x11.4 mm                     20.0x5.25x18.3 mm

 

Thermal

Operating Temperature                 -10º C to 70º C                            -10º C to 67º C

Storage Temperature                    -30º C to 83º C                            -20º C to 82º C

 

Last modified: February 27, 2008