OLED display driver - Page 9

Leadis Technology sold its display driver business unit to Korea's AsTEK, for 3.5M$ (plus 0.5M$ of assumed liabilities). Leadis will still hold the rights to the EpiC AMOLED-driver technology, and will grant an exclusive license to AsTEK to use it. So Leadis will get royalties from future units sold.

Leadis also continues to hold the rights to most legacy display driver products already in production and will continue to sell these products to existing customers.

Maxim Integrated Products has developed the MAX17065 highly integrated power-management IC (PMIC) with a step-up DC/DC converter, an inverting DC/DC converter, regulated positive and negative charge pumps, and a low-dropout linear regulator (LDO).

The MAX17065 is used to drive AMOLED displays, aimed for cellphones, camera, MP3 players and other products.

The MAX17065 is available in a space-efficient, 4mm x 4mm, 28-pin TQFN package and is fully specified over the -40°C to +85°C extended temperature range. Pricing starts at $1.20 (for 1000+ orders).

MagnaChip has announces a new high-end WVGA AMOLED driver, the EA8850 for high-res handsets.

The chips supports resolutions of 480x864 and 360x640, at 16m colors, and also supports
Qualcomm's MDDI 1.2 tech (enables frame buffer-less architecture and lowers power consumption with its reduced
signal swing).

The EA8850 also has power-saving functionality.

TDK is showing a W-QVGA 3" PMOLED, using Dialog's SmartXtend driver, saying production may begin in the second half of 2009.

We covered Dialog's SmartXtend in February, and it's good to see TDK's implementation. The SmartXtend can reduce peak current through each diode by up to 30 percent compared to regular PMOLEDs, and it allows for greated resolution and larger displays than normal PMOLEDs, while being cheaper to make than AMOLEDs.

Read more here (ElectronWeekly)

Leadis announced sample availability of the LDS535, a 480 channel, one billion color AMOLED source driver IC, the first of many products the company is developing for the mid-size AM-OLED display market.

They are currently testing first silicon utilizing their Epic(TM) technology for AMOLED displays, and they also announced the first design win utilizes the Epic(TM) technology.

Leadis Technology today announced sample availability of the LDS535, a 480 channel, one billion-color AMOLED source driver IC. The device has CMOS data and RSDS (Reduced Swing Differential Signaling) interface and also incorporates state-of-the-art features such as 10 bits gray level capability, VDD power regulator and RGB Separate Gamma.

The LDS535 is targeted at mid-sized AMOLED displays supporting WQVGA to SVGA resolution with CMOS data interface. The state-of-the-art features of the LDS535 make it an ideal solution for devices requiring vivid color display with low power consumption, such as PMP, DMB, electronic dictionary and other home applications.

"With this AMOLED driver we are extending a leadership position in the existing AMOLED mobile display market to the emerging variable portable electronics products market," said Keeho Kim, GM of the Display Driver Business Unit at Leadis. "This is the first of many products that we are developing for the mid-size AMOLED display market."

Samsung Electronics announced today that it is mass producing a 16M-color display driver IC (DDI) for AMOLED displays used in mobile phones and other handheld devices. With outstanding image quality, AMOLEDs are attracting attention from device designers as the next generation display technology of choice.

Samsung's new mobile DDI for AMOLED displays support qVGA resolutions (240x320) and is capable of producing a range of over sixteen million colors. It is well in step with the recent expansion of multimedia functions and services offered in mobile devices. Samsung's new 16M-color DDI self-adjusts the screen brightness, illuminating only those areas that need light. As a result, power consumption is minimized and battery life extended. The read-only memory (ROM) is built in separately, enabling red, blue and green (RBG) gamma compensation to reproduce more lifelike images.

The new 16M-color AMOLED DDI is currently in mass production and has been introduced in Samsung SDI's AMOLED panels. Samsung's broad line up of DDIs for LCDs, PDPs and AMOLED displays addresses the diverse needs of its customer base.

• Leadis announced a strategic partnership with VP Dynamics on RGBW technology for small and medium mobile displays. Leadis will license VP Dynamics' VPW(TM) RGBW technology for use in LCD, AM-OLED and other display drivers, empowering products with lower power consumption, higher resolution, excellent brightness, and better contrast.
• Leadis announced the acquisition of intellectual property from Nuelight Corporation designed to correct image sticking issues that can occur with the display of static content and significantly improve manufacturing yields in AM-OLED displays. This technology has the potential to accelerate AM-OLED market share gains by making it more lack the visual experience and low-power advantages offered with AM-OLED displays. reliable and cost competitive with alternative display technologies that

National’s LM4510 is a synchronous high-voltage boost regulator that supports OLED displays which are much thinner and consume less energy than liquid crystal displays (LCDs). The LM4510 features up to 85 percent efficiency for longer battery life and is offered in a small LLP® package.

Technical Features of National’s LM4510 OLED Display Power Supply
National’s LM4510 is a current-mode, step-up DC-DC converter with a 1.2A internal NMOS switch designed to deliver up to 80 mA at 18V from a Li-Ion battery. The synchronous operation at heavy loads and non-synchronous operation at light loads allow it to achieve up to 85 percent efficiency for longer battery life in power-constrained applications. Moreover, the true shutdown isolation feature eliminates leakage current paths to ground in stand-by mode. The device reduces the total solution size and cost through elimination of an external Schottky diode and from a 3.2V input, delivering a current range from 18V to 5V. The system designer can optimize line and load transient responses using the external compensation network in a broad range of applications, such as USB power supply or OLED display bias. Finally, the LM4510 offers a very robust solution due to the feedback fault and short-circuit protection feature on the output. The LM4510 is available in a 10-pin thermally enhanced LLP® package.