OLED display driver - Page 8

4D Systems have recently released a new and improved range of custom graphics processors and display modules:

• The GOLDELOX-GFX2 (enhanced GOLDELOX-GFX): an embedded 4DGL graphics controller. The chip is designed to interface with many popular OLED and LCD display panels.
• New PMOLED modules: The modules are compact and cost effective, with an embedded GOLDELOX-GFX2 graphics processor that delivers ‘stand-alone’ functionality to any project. Powerful graphics, text, image, animation and countless more features are built inside the GOLDELOX-GFX2 chip.
• The GOLDELOX-SGC(8-bit) and the PICASO-SGC(16-bit): intelligent Serial Graphics Controllers designed to interface with many popular color OLED and LCD display panels.
• Smart Serial Display Modules: from a tiny 0.96" OLED module all the way up to 3.2" TFT to suit most small to medium size graphics user interface applications.

More information can be found over at 4DS' web site

ST Microelectronics announced a "key design win" for its power management ICs for AMOLED displays from a leading manufacturer in Korea (which is probably Samsung or LG).

AnalogicTech says it will start making drivers for small AMOLEDs. They claim that they have an innovative power supply
waiting in the wings. "An AMOLED needs a positive supply and a negative
supply. These need a positive boost converter and a negative boost
converter," CEO Richard Williams said. "That's two coils but we are privately sampling a
PSU that independently regulates the plus and minus rails from a single
coil with a measured efficiency comparable with dual converters."

Gamma correction - this time to compensate for the
different characteristics of red, green and blue OLED materials, is
another target. 

4D Systems has announced a new serial graphic controller designed for their µOLED and µLCD display panel. The controller provides a simple, flexible and effective, low-cost graphics user interface solution for rapid application development and time-to-market.

Goldelox SGC

Solomon Systech announces a new OLED driver, the SSD1306. It's aimed for small displays- up to 128x64 resolution. The driver has three capacitors and a built in charge pump, so it can support voltage supply of 3.3V to 4.2V.

Solomon Systech SSD1306

Samples of the SSD1306 are now available.

Novaled, Fraunhofer IPMS and Optrex Europe developed a new, unique PMOLED driver. They have implemented an innovative MLA scheme called SELA (Summed Equiline Addressing). Basically, instead of driving using a single-line addressing scheme, the SELA allows parallel driving of multiple rows, thus preventing high current amplitudes.

Basically this means that we get higher lifetime, better resolution and better efficiency in the OLED display. The driver is specified for operations between -40°C and +125°C, exhibits an OLED drive voltage up to 25 V, and a column source current up to 2 mA. In particular the latter can currently not be fulfilled by any commercial available PM OLED driver.

In addition to the innovative addressing concept and the new OLED MLA driver, a high temperature stable and long-living orange emitting PIN OLED layer stack was developed by Novaled AG. In automotive applications high reliability at 85°C
operational temperature and highly stable brightness (often only 20% reduction over lifetime is allowed) is required. The newly developed OLED stack offers an operating lifetime of currently 5.300 hours at 85°C and 20% brightness drop at an initial brightness of 600 cd/m².

TekGear has released a new driver board for eMagin SVGA+ XL Rev2 and Rev3 & SVGA 3D OLED microdisplays.

TekGear says that the O5 is the smallest, lowest power and most feature rich driver board for the eMagin OLED on the market today. Features include:

Dongbu said they developed a driver for AMOLED displays, supporting resolutions up to 1024x768. They will start shipping the drivers in a few months.

Dongbu also said that they are in advanced talks with Panasonic and NEC to supply the chips.

MicroOLED released a new high-definition interface between their high-res microdisplays and TI's OMAP (mobile) platform. The new interface will enable 3D video using video glasse, using a single HDMI connection (with two video streams left and right SD video).

MicroOLED's OLED-on-CMOS microdisplay tech enabled WVGA+ high res (872x500 pixels in each display). It'll be interesting to see when we'll see a product based on their microdisplays...

The governments of Hong Hong and neighboring Shenzhen, China will fund R&D projects, with a 4.7M$ fund.

One of the areas in which they are interested in is "Development of high-performance silicon driver intellectual properties for display panel (TFT-LCD and OLED) applications."