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Sony Announces a New 5.6 Million Dots OLED EVF with 240fps Refresh Rate

0.5-type OLED Microdisplay ECX339A

Sony Corporation announced a new ECX339A OLED Microdisplay featuring UXGA (1600 x 1200 resolution), the highest in class for a 0.5-type. This product achieves the world’s smallest pixel pitch of 6.3μm by leveraging Sony‘s OLED display technology and miniaturization technology, enabling a resolution 1.6x higher than the previous model. When paired with Sony’s original driving system*2, a frame rate up to 240 fps is supported—double that of previous product.

I have to say this new OLED EVF will be perfect for the upcoming Sony a7S III, but this OLED EVF will start being produced in November, does that mean the Sony a7S III will be released in late October after Photokina 2018?

Press Release:

Sony Releases 0.5-type OLED Microdisplay with Top-of-Class UXGA Resolution, Featuring the World’s Smallest Pixel Pitch of 6.3µm

Tokyo, Japan—Sony Corporation today announced the upcoming release of the ECX339A OLED Microdisplay featuring UXGA (1600 x 1200 resolution), the highest in class for a 0.5-type. This product achieves the world’s smallest pixel pitch of 6.3μm by leveraging Sony’s OLED display technology and miniaturization technology, enabling a resolution 1.6x higher than the previous model*1. By employing a new drive circuit design that operates on half the voltage of the previous model*1, the new product achieves the same level of low-power operation as its predecessor but with much higher resolution. When paired with Sony’s original driving system*2, a frame rate up to 240 fps is supported—double that of previous product*1.

0.5-type OLED Microdisplay ECX339A

Model name Sample shipment date Mass-production shipment date (planned) Sample price (excluding tax)
ECX339A 0.5-type OLED Microdisplay January 2018 November 2018 50,000 JPY

Enhancing the resolution on microdisplays has traditionally presented problems such as deteriorating image quality due to decreased pixel pitch and inferior viewing angle properties. The new product features optimized transistors layout and process to address uneven characteristics and loss of withstand voltage, the issues associated with transistor miniaturization. The Sony original variation compensation circuit also enhances picture quality. Additionally, the color filter is deposited directly on the silicon substrate, reducing its distance from the light emitting layer, and the filter’s color array has been modified. This helps to secure the viewing angle properties while achieving high resolution.

OLED Microdisplays are widely used in digital camera electronic viewfinders (EVF) for their superior high contrast, high color gamut, and high-speed responsiveness. Sony, having achieved this high resolution and high frame rate, now offers even more realistic image display and accurate capture of subjects for use in high-end cameras that demand extremely high image quality.

Going forward, Sony expects this high-definition OLED Microdisplay to be employed in a diverse range of fields and applications such as AR (augmented reality) and VR (virtual reality) head-mounted displays.

*1 Compared with the Sony OLED Microdisplay ECX337A (0.5-type QVGA (1280×960)).
*2 Driving method of dual vertical line simultaneously (“Dual-line progressive” driving technique)

Main Features:

1.High-resolution UXGA in a 0.5-type

The new product has achieved the world’s smallest pixel pitch of 6.3μm by leveraging Sony’s proprietary OLED display technology and miniaturization technology, and has superior resolution 1.6x higher than the previous model*1. Generally, transistor miniaturization results in characteristic variation and reduced withstand voltage. This product uses a Sony original compensation circuit and optimized layouts and process for each individual transistor to address these adverse effects. Furthermore, the color filter is deposited directly on the silicon substrate, reducing its distance from the light emitting layer, and the filter’s color array has been modified to secure the viewing angle properties while achieving high resolution.

2.High-speed frame rate

A new drive circuit design supports a high frame rate of up to 240 fps*2, nearly double that of its predecessor*1. This has made it possible to capture fast-moving subjects in the viewfinder with higher accuracy, so users will not miss a photo opportunity, delivering a more comfortable shooting experience. In head-mounted display devices, this will help to improve image delay issue for items superimposed on real-world vision of AR and to avoid motion sickness during usage of these kinds of devices.

3.Low power consumption

By employing newly-designed peripheral circuits that operate on half the voltage of previous model*1, the new product delivers the same low-power operation as its predecessor when operating at the same frame rate, despite the nearly 1.6x increase in the number of pixels.

Key Specifications

Name ECX339A
Display Size 0.5 type (12.6 mm Diagonal length)
Resolution UXGA(1600×RGB×1200)
Pixel pitch 6.3μm
Max. frame rate 120 fps (progressive) / 240 fps (dual-line progressive)
Power consumption (200cd/m2) 310 mW @ 60 fps (progressive) / 120 fps (dual-line progressive)
Video interface LVDS/Sub-LVDS
Max. luminance 1,000cd/m2
Contrast 100,000:1 or higher
Color gamut (u’v’) sRGB ratio: 110%

Via: Sony

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