Friday, August 31, 2007

Omnivision and Micron Got Good News

Barron's cites Robert W. Baird chip analyst Tristan Gerra writing that recent investor speculation that memory chip maker Micron Technology (MU) will spin-off its image sensor division “could be true”. He says the potential spin-out would be accretive to Micron’s earnings by a few cents a share “and would create a pure play and number-one CMOS image sensor supplier into mobile phones.”

Gerra today also asserts that Micron “has a significant win” at Nokia for its image sensors which will ramp up next year. He says the company also has maintained its “stronghold position” at Motorola, including the RAZR2, and also continues to be a supplier to many smartphones, including the Apple iPhone.

With yesterday's earning report and upbeat forecast Omnivision gets a lot of comments today. Marketwatch writes that average selling prices for Omnivision's sensor chips rose to $2, up from $1.92 for the three month period ended April 30, bolstered by a shift towards 2-megapixel products. It shipped 86 million sensors, up from 62 million shipped the prior quarter.

"After a long struggle last year, market share gains, richer product mix and improving gross margin are finally trickling down to the bottom line," wrote analyst N. Quinn Bolton of Needham & Co.

Some other analysts are sceptical, but my personal impression is that Omnivision overturn is for real. Finally Omnivision was able to deliver a good 2MP product and partially closed the technology gap in 1.75um pixel. No doubt this should improve the company market position.

Wednesday, August 29, 2007

Adlink Develops Camera Modules Tester

Digitimes: Adlink Technology, a Taiwan-based industrial PC producer, has been cooperating with one of the global top three suppliers of CMOS image sensor modules to develop an image sensor testing platform to be used on production lines.
Adlink plans to start producing its testing platform in small volumes in Q1 2008.

Richard Lyon's "Pixels and Me"

I've just bumped into a Computer History Museum's video lecture "Pixels and Me" by Richard Lyon (Foveon). Quite interesting historical content, if you have a spare 1.5 hour. One can download it here.

Tuesday, August 28, 2007

Image Sensors in 2007

EETimes: "The first half of 2007 has been a disaster for CMOS image sensor suppliers," said Robert Lineback, an analyst with IC Insights Inc. "This is mostly due to the decline of orders from the cellular phone segment. This correction continued in the second quarter, but market conditions should improve in the second half of 2007."

In 2006, CMOS image sensor sales totaled $4.2 billion, up more than 30 percent from about $3.2 billon in 2005, according to IC Insights. The current outlook for CMOS image sensors is for only 4 percent growth in 2007 to $3.4 billion, after a year-over-year decline in the first half of this year, according to the firm.

Overall, worldwide revenues for image sensors -- including both CCDs and CMOS image products -- fell about 4 percent in the first six months of 2007, according to the firm.

"CCD sales have been down just slightly compared to the steeper drop in CMOS imagers, which have been clobbered with lower unit volumes and the erosion of average selling prices (ASPs) in the first two quarters this year," Lineback said. "Both CCD and CMOS image sensor segments are expected to improve in the Q3 and 4Q periods."

Compounding the problem are some transitional issues in the market. "One major problem facing CMOS imager suppliers has been the slower-than-expected migration to higher resolution embedded cameras in handsets," IC Insights' Lineback said.

"Micron continues to struggle with sensors and has not seen a rebound in orders from Motorola," said analyst Doug Freedman of American Technology Research Inc.

"We expect Micron to actively pursue strategic alternatives for its image sensor business," Freedman said. "While we don't expect Micron to exit the business entirely, we do believe the company is looking for ways to separate the image sensor results from its core NAND/DRAM business."

Doug says that Omnivision ramps up a new tier one design win. "We suspect OmniVision's design win is with Motorola," he said. "Based on ASPs and volumes needed to generate the incremental revenue in OmniVision's guidance for the July quarter, we believe the company could be designed into the new Motorola Razr2 handset, which has the potential to be a key platform for Motorola in the coming quarters based on early user/industry reviews."

Other CMOS image suppliers are seeing mixed results. "We believe pricing pressure in the low-end is still an issue with Samsung pushing for share gains," Freedman said.

Like Lineback, Freedman also sees a better picture in the second half for suppliers. "Handset unit growth remains robust," Freedman said. "2-Mpixel sensors are becoming more mainstream with the industry moving from VGA straight to 2MP. We believe 2-Mpixel sensors carry a 2-to-3 times ASP advantage over VGA sensors and that advances in packaging technology will continue to push higher resolution sensors into mainstream phones and boost margins and volumes."

Sunday, August 26, 2007

Alexima Announces First Products

Alexima announced its first sensor products. AM025 has 512x512 pixel resolution and 4000fps speed. AM40 is 4MP sensor providing 400fps. The sensors are clearly targeted to machine vision applications.

Also, on About Us page there are few rare papers from past Workshops on Image Sensors:

A 2e- Noise Sensor
4 Mpixel Alexima

Saturday, August 25, 2007

Hynix to Repurchase Magnachip?

The Korea Times: In July, Hynix CEO Kim Jong-gab said the company was ready to enter the non-memory semiconductor business. Officials say the detailed plans on the new business, including the repurchase of MagnaChip, will be unveiled after October 3.

In 2004 Hynix separated from its non-memory business, which became MagnaChip Semiconductor.

Zero-Bias Photodiode Problems

Bart Dierickx published his paper "Variability limits the advantage of a photo diode’s zero bias operation" on Caeleste web site. Originally the paper was presented at 2007 International Image Sensor Workshop, 7-10 June 2007, Maine USA.

Sony APS-C Sized Sensor for DSLR

A few days ago Sony announced 12.47MP IMX021 sensor with 28.4mm diagonal, which translates to 5.49um pixel. At 10.39fps speed the sensor is quite fast for a DSLR sensor.

Sony touts 12b column-parallel ADC, which allows "dual noise cancelling technology realizing high-precision noise reduction across both analog and digital circuits". However, no sensor noise numbers are released.

IMX021 production will be carried out at Sony Semiconductor Kyushu Corporation's Kumamoto Technology Center.

Friday, August 24, 2007

Micron 1.75um Pixel Reverse Engineering

For the first time Chipworks openly publishes poly and diffusion-level picture of Micron's 1.75um pixel:



This is the old pixel from MT9E001 8MP sensor. It mostly inherits the first generation 2.2um layout, just shrinked down a little. More recent Micron pixels are supposed to improve its symmetry.

Tuesday, August 14, 2007

ProMOS Plans CIS Production in Q4 2007

Digitimes: ProMOS plans to provide foundry service production in the fourth quarter at its first 12-inch fab (Fab 2) at Hsinchu, Taiwan, according to the company at an investors conference. The company plans for a capacity of 20,000 wafer starts per month for CMOS image sensor production from the fourth quarter of 2007.

From the article it's not clear whether this production relates to Toppan-licensed color filters or full image sensors.