Epson's New HTPS Panels to Revolutionize 3D Projection

– Brighter 3D pictures and faster image refresh rate thanks to Epson's 'Bright 3D Drive' –

high-temperature polysilicon

- TOKYO, Japan, September 1, 2011 -

Seiko Epson Corporation ("Epson," TSE: 6724) today announced that it has launched the world's first*1 high-temperature polysilicon ("HTPS") TFT liquid crystal panels for 3D 3LCD projectors.

Developed and manufactured by Epson using the latest processing technologies, the HTPS panels employ 'Bright 3D Drive' - a new technology that brightens 3D images by doubling the image refresh rate from 240 Hz to 480 Hz. The faster refresh rate results in 3D images that are at least 1.5 times brighter*2 than those created on panels refreshed at 240 Hz. Epson applies this technology in a new range of 3D HTPS panels currently in volume production.

Nobuyuki Shimotome, Chief Operating Officer, TFT Operations Division, Epson, said, "Thanks to our new HTPS panels users will enjoy bright 3D images. In addition, projector manufacturers looking for the quality and technical advantages that Epson provides, will also benefit from our new panels.

"For more than two decades Epson has maintained its position as the world's No. 1 supplier*3 of HTPS panels, the core devices at the heart of 3LCD projectors. While the expansion of the 3LCD projector market has been driven primarily by business demand, today we see an increasing appetite for home cinema projectors capable of delivering stunning, bright 2D and 3D images. With our new technology, we are confident that we will be able to meet that demand."

As the leader in the development and manufacture of HTPS panels, Epson will continue to meet customer demand with a range of HTPS panels and end products that employ cutting-edge liquid crystal technology, high-aperture designs and other original features.

*1 According to Epson research (as of the end of August 2011)
*2 Principles of 3D image projection at a 480 Hz refresh rate
*3 According to Epson research (as of the end of August 2011)

Technical information

Features of the new panels

  • World's first 3D HTPS panels
  • The fast 480 Hz refresh rate produces a bright 3D display at least 1.5 times that of a display refreshed at 240 Hz)

New panel specifications

Name L3C07U-95G00 L3C06U-A5G00
Panel type Transmissive HTPS Transmissive HTPS
Liquid crystal type C2 Fine
(VA inorganic alignment layer)
C2 Fine
(VA inorganic alignment layer)
Process technology D9 D9
Effective pixels 1920 x 1080 (1080p) 1920 x 1080 (1080p)
Panel size (diagonal) 0.74 inch (1.87 cm) 0.61 inch (1.54 cm)
Pixel pitch(diagonal) 8.5 microns 7.0 microns(1.54 cm)
Aperture ratio 65 % 61%

Development of the 3D panel

One of the primary formats for displaying 3D images is called "frame-sequential 3D." This format requires the viewer to wear special glasses, the lenses of which serve as active shutters that alternately block and transmit light. Frame-sequential 3D systems display on a screen a series of rapidly alternating frames, each successive frame carrying an image meant for either the right or left eye. The active shutter glasses are synchronized with the images so that only the right shutter is open when the frame for the right eye is displayed, and only the left shutter is open when the frame for the left eye is displayed. The rapid alternation of the frames causes the viewer to perceive the images in 3D.

The problem with the frame-sequential format is that, in the case of an ordinary LCD panel, both shutters have to be closed for a certain period of time to prevent the wearer from seeing the left and right images briefly overlapped. If both shutters are closed for a relatively long period of time, the brightness of the image will appear far lower than that of a comparable 2D image. Developers addressed this problem to some extent by, for example, increasing the refresh rate to 240 Hz (so that the frame is switched 240 times per second) to shorten the blackout period in which both shutters are closed. Consumers, however, were not satisfied and wanted to see brighter 3D images.

high-temperature polysilicon

This prompted Epson to develop Bright 3D Drive, a technology that doubles the LCD refresh rate from 240 Hz to 480 Hz. This was achieved by using the latest D9 processing technology, which enabled Epson to both increase the aperture ratio and further improve the company's original hybrid drive technology. The faster refresh rate allows users to enjoy images that are at least 1.5X brighter*2 than those created on panels refreshed at 240 Hz. Epson employs this technology in 3D-ready HTPS panels currently in volume production.

Related information

To learn more about the advantages of our HTPS panels, visit:

To learn more about 3LCD technology, visit: New window

About Epson
Epson is a global imaging and innovation leader that is dedicated to exceeding the vision of customers worldwide through its compact, energy-saving, high-precision technologies, with a product lineup ranging from printers and 3LCD projectors for business and the home, to electronic and crystal devices.
Led by the Japan-based Seiko Epson Corporation, the Epson Group comprises nearly 75,000 employees in 100 companies around the world, and is proud of its ongoing contributions to the global environment and the communities in which it operates.