Acquired Electronics360

Television Hardware

Samsung LN-T4665F 46 Inch LCD Television Teardown

30 November 2012

Overview / Main Features

The Samsung LN-T4665F is a 46" LCD TV with full HD support, which means it supports up to 1080p resolution. It has a resolution of 1920 horizontal by 1080 vertical pixels and an image aspect ratio of 16:9. The device supports DTV resolutions of 480i, 480p, 720p, 1080i, and 1080p. It has a tuner which is capable of analog and full digital NTSC/ATSC with QAM. The LN-T4665F features four internal speakers capable of 10W outputs with SRS TruSurround XT support in a 2.2 Channel fashion. A wide variety of input / output ports are present on the LN-T4665F, which includes HDMI, component, S-video, optical digital audio out, serial (9-pin D-Sub), and the standard analog / coaxial signals. The unit comes with a stand which can be detached. This model is priced at the higher end of the market to target high-end buyers.

Samsung LN-T4665F 46 Inch LCD Television_(iSi) - Main PCB Close-Up ViewSamsung LN-T4665F 46 Inch LCD Television_(iSi) - Main PCB Close-Up View
Target Market


High-end LCD TV consumers.

Released

The Samsung LN-T4665F was released on April 15th, 2007 with a price of $3199.99 (list) - but can be purchased for roughly $2300 USD currently, depending on vendor.

Pricing and Availability

The 46" Samsung LN-T4665F LCD TV is currently priced at $2599.99 which is at the high-end price range for a 46" LCD TV.

Availability - The Samsung LN-T4665F is available to the United States market and readily available at retail electronics stores and online retailers.

Volume Estimations

For the purposes of this teardown analysis, we have assumed a lifetime production volume of 100,000 units.

As a reminder, teardown volume production assumptions are primarily used for our cost analysis in terms of amortized NRE and tooling costs, especially for custom components specific to the model being analyzed (mechanical components especially). Unless assumed volumes are different by an order of magnitude, minor changes in volume (say 1 million vs. 2) rarely have a large net effect on our final analysis because of this.

Samsung LN-T4665F 46 Inch LCD Television_(iSi) - Main PCB Close-Up ViewSamsung LN-T4665F 46 Inch LCD Television_(iSi) - Main PCB Close-Up View
Main Cost Drivers (Representing % of total BOM costs)

Display

$805 - Samsung - LTA460HT-LH2 - LCD Display Unit - TFT, WUXGA, 46" Diagonal, 1920 x 1080 Pixels (16:9), 0.53mm x 0.53mm Pixel Size, 16.7M Colors, 1500:1 Contrast Ratio, 570cd/m^2 Brightness, 8ms Response Time, Active Area: 1018.1mm x 572.7mm

Power Supply

$37.60 - Hansol LCD - SIP460A - Power Supply Line item

Electronic Cost Drivers (From Main PCB)

$17.88 - Samsung (Trident Microsystems) - STP10 (SVP-LX) - Video Processor - Digital Cinema Reality Engine, Support Full HD

$14.50 - Samsung - DNVS227IH262A - ATSC Tuner (Can)

$12.19 - Samsung - S4LF111X01 - DTV MPEG Decoder - ARM Powered

$6.05 - Samsung - SDP64 - Digital Natural Image Engine

$5.59 - Taiwan PCB Techvest Co., Ltd. - Main PCB - 4-Layer - FR4, Lead-Free

$5.00 - Samsung - K4D551638H-LC50 - SDRAM - GDDR1, 256Mb, 16Mx16, 200MHz, 2.7V

$4.20 - EtronTech - EM6A9320BI-5MG - SDRAM - DDR, 128Mb, 4Mx32, 200MHz, 2.5V

Mechanical Cost Drivers

$42.54 - Enclosure, Main, Rear - Injection Molded Flame Retardant ABS-Polycarbonate

$31.85 - Enclosure, Main, Front Bezel - Injection Molded Flame Retardant Polycarbonate, Silkscreened

$7.71 - Enclosure, Stand, Top - Injection Molded ABS-Acrylic Plastic

$6.50 - Enclosure, Main, Right Cover - Injection Molded Flame Retardant ABS, Chromed, w/ PSA

$6.48 - Enclosure, Main, Left Cover - Injection Molded Flame Retardant ABS, Chromed, w/ PSA

$5.43 - Stand Base Support - Stamped / Formed Paint-Loc Steel

Subtotal Main Cost Drivers~$1008.52

Total Materials Costs~$1,110.39

Materials and Manufacturing~$1,142.14

What Is Not Included in our Cost Analysis

The total materials and manufacturing costs reported in this analysis reflect ONLY the direct materials cost (from component vendors and assorted EMS providers), AND manufacturing with basic test. Not included in this analysis are costs above and beyond the material manufacture of the core device itself - cost of intellectual property, royalties and licensing fees (those not already included into the per component price), software, software loading and test, shipping, logistics marketing and other channel costs including not only EMS provider and the OEM's margin, but that of other resellers. Our cost analysis is meant to focus on those costs incurred in the manufacture of the core device and exceptionally in some circumstances the packaging and literature as well.

Manufacturing Notes

Country of Origin / Volume Assumptions

Based on markings, the unit was assembled in Mexico (which is typically the case for Samsung TVs we see in the US). Furthermore, we have assumed that custom mechanicals (plastics, metals, etc.) were sourced in Mexico as well based on the markings found on the parts. We assumed most of the PCBAs were populated in Korea and final assembled into the main enclosure in Mexico.

Country of origin assumptions relate directly to the associated cost of manufacturing, where calculated by iSuppli. In the cases of "finished" sub-assemblies (such as can tuners), we do not calculate internal manufacturing costs, but rather assess the market price of the finished product in which case country of origin assumptions may or may not have a direct effect on pricing.

Remember also that labor rates are applied directly only to hand inserted components and systems in our bill of materials, and although regional assumptions do, these new rates do not have a direct effect on our modeled calculations of placement costs for automated SMD assembly lines. "Auto" inserted components (such as SMT components) placement costs are calculated by an iSuppli algorithm which allocates a cost per component based on the size and pincount of the device. This calculation is affected by country or region of origin as well.

Samsung LN-T4665F 46 Inch LCD Television_(iSi) - Power Supply PCB Close-Up ViewSamsung LN-T4665F 46 Inch LCD Television_(iSi) - Power Supply PCB Close-Up View
Design for Manufacturing / Device Complexity

The Samsung LN-T4665F LCD TV has a total component count of 2779 components (when itemizing the components from both power supplies and the can tuner, but not the display). To make this figure more comparable to the previously analyzed Vizio GV47L we must account for the power supply and can tuner as single items, or an adjusted total component count of 1975.

This "comparable" total component is comparable to the lower-end, but similarly spec'ed 47" Vizio GV47L LCD TV which had 2044 components (power supply and can tuner were not component itemized in this analysis).

Whereas some LCDs and Plasma TVs analyzed in the past had many separate PCBs - the core functionality of this design all takes place on the single Main PCB. In addition to that PCB there is really only one other "significant" PCBA: the power supply, and a minor PCB that happens to feature an important IC - the Side Connector Panel PCB (features Silicon Image TMDS switch).

Those sub-assemblies that are an integral part of the LCD panel (CCFL inverter boards, and the LCD driver board) are not accounted for in this analysis as they are considered a sub-system of the LCD which is sold as a fully assembled unit, like a hard drive. The total discrete component count would increase significantly if this display were broken down into all of it's constituent components.

Component counts have a direct bearing on the overall manufacturing cycle times and costs, and also can increase or decrease overall yields and re-work. Our calculations of manufacturing costs factor counts and more qualitative complexities in the design. Note that manual labor has a much smaller effect on auto-insertion assembly lines (for the Main PCB, for example), where manufacturing costs are much more capital equipment intensive and driven by these investment costs.

Samsung LN-T4665F 46 Inch LCD Television_(iSi) - Side Connector Panel PCBSamsung LN-T4665F 46 Inch LCD Television_(iSi) - Side Connector Panel PCB
Design Notes

The TV design is quite modular and falls into several large "value" blocks, primarily the LCD panel (with CCFL backlight and other onboard drivers which constitute a single "unit'), the Main PCB (only 1), and the power supply.

The main PCB (motherboard) has a lot more silicon on it than lower end LCD TVs (such as the recently analyzed Vizio), but also has a degree of functionality, that while difficult to quantify or fully account for, is greater than the Vizio. Without doing a comprehensive reverse-engineering analysis, we can only say that the added functionality and therefore increased complexity in this Samsung design can be measured to some extent by metrics such as the I/O count (2062 for the integrated circuits on the main PCB, vs 1526 on the Vizio (35% more)), and also by the sheer number of chips as well as silicon surface area (about 30% silicon surface die area just in the top 5 chips).

Samsung LN-T4665F 46 Inch LCD Television_(iSi) - IR Sensor PCB TopSamsung LN-T4665F 46 Inch LCD Television_(iSi) - IR Sensor PCB Top
Here is a summary of the major components used in the Samsung LN-T4665F LCD TV design:

Display

Samsung - LTA460HT-LH2 - LCD Display Unit

  • TFT
  • 46" Diagonal
  • 1920 x 1080 Pixels (16:9) / WUXGA
  • 0.53mm x 0.53mm Pixel Size
  • 16.7M Colors
  • 1500:1 Contrast Ratio
  • 570cd/m^2 Brightness
  • 8ms Response Time
  • Active Area: 1018.1mm x 572.7mm

Main PCB

Audio/Video Processing

  • MPEG Decoder - Samsung - S4LF111X01 - DTV - ARM Powered
  • DNIE Image Processing Chipset
  • Samsung / Trident Microsystems - STP10 / SVP-LX - Digital Natural Image Engine
  • Samsung - SDP64 - Digital Natural Image Engine
  • HDMI Receiver - Silicon Image - SiI9125CTU - V1.3, Dual Input, DVI 1.0, EIA/CEA-861D, HDCP 1.1
  • TMDS Switch - Silicon Image - SiI9185CTU - HDMI 1.3, 3-to-1

Front-End

  • Samsung - DNVS227IH262A - ATSC Tuner Module (Can tuner)
  • (Contains core DTV Receiver - Samsung - S5H1410X01-Q0 DTV)

I/O & Interface

  • Digital Audio Power Amp - NeoFidelity - NTP-3000 - 2.1-CH, w/ PWM Control / Processor, 18 Biquad Filters
  • TMDS Switch - Silicon Image - SiI9181CNU - HDMI 1.3, 1-to-1
  • Microcontroller - Weltrend - WT61P6S - 8-Bit 8051 Compatible Processor

Memory

  • SDRAM - EtronTech - EM6A9320BI-5MG - DDR, 128Mb, 4Mx32, 200MHz, 2.5V (Qty: 2)
  • SDRAM - GDDR1 - Samsung - K4D551638H-LC50 - 256Mb, 16Mx16, 200MHz, 2.7V (Qty: 2)
  • Samsung - KFG5616U1A-PIB5 - OneNAND, SLC, 256Mb, 54MHz, 3.3V (Qty: 1)

Side Connector Panel PCB

I/O & Interface

  • TMDS Switch - Silicon Image - SiI9181CNU - HDMI 1.3, 1-to-1

Power Supply

  • Hansol Electronics / Hansol LCD, Inc. - SIP460A - Multi-Output - Power Rating - 270 W (Calculated)

Samsung LN-T4665F 46 Inch LCD Television_(iSi) - Box Rear ViewSamsung LN-T4665F 46 Inch LCD Television_(iSi) - Box Rear View



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