Young-Joon Kim
Analyst · Needham
Hello, everyone, and thank you for joining us today, and welcome to Magnachip's Q1 earnings call. Our overall Q1 results were in line with our guidance. Q1 revenue was $49.1 million, down 13.9% year-over-year and down 3.5% sequentially. Consolidated gross profit margin was 18.3%, down 2.9 percentage points year-over-year and 4.4 percentage points sequentially, mostly due to the wind down of the transitional foundry services.
Excluding transitional foundry services, revenue in our standard product business, which is comprised of MSS and PAS businesses, was up 10.6% sequentially, while gross margin was 21.2%, down 1.7 percentage points sequentially. The decline in gross margin was mostly due to lower Gumi fab utilization, driven by the wind-down of the Transitional Foundry Services, which also impacts PAS margins because they share the fab.
Despite typical Chinese New Year seasonality, the solid sequential revenue growth of our standard product business in Q1 suggests overall market conditions are improving with the inventory correction possibly nearing an end for some verticals. In particular, we saw improvement in the inventory channel for our PAS business. We also saw better-than-expected demand from our design for the after-service OLED display market, and we benefit from increased demand in our automotive display business. The PAS business strength was primarily from smartphones, e-motors, consumer appliances and server power applications.
Now let me provide more detailed comments for each of our standard product business lines, beginning with MSS. Q1 revenue was in line with our guidance at $9.0 million, down 29.7% year-over-year and up 5.2% sequentially. As we mentioned before, the quarter-over-quarter revenue growth was due to increased demand from automotive LCD and OLED products. Overall, we continue to collaborate with several OLED panel makers and smartphone OEMs targeting the China market. While third-party market researcher Omdia predicts only slight growth in the global smartphone market in 2024, the top 5 China brands are forecast to enjoy more than 18% growth in OLED smartphone shipments.
As a reminder, we have DDIC designs and customer engagements underway that span the entire smartphone market spectrum from the mass market tier to the premium tier segments as well as other display markets such as automotive. We had an additional 2 new OLED design this quarter that we'll discuss more in detail later.
More specifically, during the quarter, our display IC business had a new design-in of a high-end OLED smartphone for a top-tier Chinese smartphone vendor. This design-in is based on our QHD+ OLED DDIC that we sampled in Q1 2024. This chip provides the latest 8 transistor LTPO panel feature support and is produced in 28-nanometer. We expect this design to go into production by the end of the year.
We also started the initial ramp in Q1 for our first-generation OLED DDIC chip for China that we taped out in 2022 for the after-service market. We are now working to expand this segment with other China panel makers.
As mentioned previously, we received a pilot production PO as a second source supplier from a leading Chinese smartphone OEM. We expect revenue to begin in the second half of the year. Moreover, we also have been chosen to work with them on their fall 2024 model with our next-generation chip that we taped out and expect to sample in Q2 this quarter.
Finally, we taped out in Q1 and expect sample in Q2 our first smartwatch OLED DDIC. We're excited about this partnership with a smartwatch solution provider in China, as it showcases our strategies to expand into new high-growth adjacent markets.
With regard to our automotive DDIC business, we saw strength in the first quarter that will likely to continue in Q2. Notably, we had a new OLED design win in EV that has commenced production in Q2 targeted for a leading European automaker.
Our Power IC business is now including MSS. We saw sequential strength from LED TVs during Q1 and expect business to broaden to include multiple notebooks and tablet models in Q2. We continue to secure new design wins with a major Korean customer.
Moving on to PAS. Q1 revenue was $36.5 million, down 5.6% year-over-year and up 12% quarter-to-quarter. The sequential increase was due primarily to increased demand for medium voltage MOSFET for industrial e-motor markets in China, consumer appliances and server power. The results are in line with our earlier expectation for a gradual recovery in our power business during the first half of 2024 and are further supported by initial signs of inventory reduction in the distribution channel for our PAS products.
More specifically, we saw strength in the high-speed e-motor market for scooters and motorcycles where we benefit from the approximate doubling of the bill of material compared to a traditional e-bike. We believe our power solution for e-motors are now outperforming our competition.
We are seeing steady demand in low-voltage MOSFETs due to contribution from new high-end smartphone models as well as increased demand in mid-range smartphones. Further, the PAS design pipeline looks solid for the next generation of smartphones coming in late 2024 and into 2025. We saw a sequential uptick in demand for our Super Junction MOSFETs and obtained a 600-volt design win in the PC power and power supply market. We also had an IGBT design win at 650 volt from a major Korean appliance company. Lastly, within automotive power, we had our first medium-voltage MOSFET design win for an electric cooling fan with a China-based SUV supplier as well as additional power steering-related win in Korea.
We have a strong product pipeline for power in 2024, and they are on track. These products expect to contribute revenue by end of the year. The new 650-volt IGBT finished the qualification and expect to begin commercial sample this month, sixth generation IGBT and super junction samples will begin in this quarter, Q2, and eighth generation LV MOSFET samples is ready and eighth generation MV MOSFET samples are ready in this second quarter '24.
In summary, PAS saw strong sequential growth in Q1. With the addition of new products and streamlined channel inventory, we are optimistic for the growth trajectory in 2024. In MSS, we're executing our China-focused strategy and making steady inroads with the top-tier panel makers and major smartphone OEMs.
I will come back to wrap up the call after Shin Young gives you more details of our financial performance in the first quarter and provide Q2 guidance. Shin Young?