Skyworth – Chip-on-Glass miniLED Q72 TV 75”

• Anax
• BOE
• HC Semitek
• HYASiC
• Samsung
• Skyworth
• TCL

Key Features

• Detailed optical and SEM photos
• Precise measurements
• Materials analysis
• Manufacturing process flow
• Supply chain evaluation
• Manufacturing cost analysis
• Estimated selling price
• Comparison between Samsung Monitor and TV and Apple iPad Pro and TCL TV

What's new

The Skyworth technology is very interesting because of the glass circuit board and the active-matrix architecture. The comparison between the Skyworth TV, TVs from Samsung and TCL, and Apple’s iPad is very informative as it highlights the technology choices of the four actors in material, BLU structure, and driver architecture.

Skyworth launched its new generation of SmartMiniLED TV with a chip-on-glass miniLED backlight unit. This Yole SystemPlus teardown report provides detailed insights into the choices Skyworth brings to the table. This new TV also integrates an active matrix driving architecture.

In this report, Yole SystemPlus provides a full reverse costing study of the miniLEDs and their assembly in the backlight unit of the TV display in the 75-inch Q72 TV from Skyworth.

The backlight system comprises 18,432 miniLEDs divided into 4 glass substrates of 4,608 miniLEDs. The backlight unit integrates 2048 dimming zones.

• The miniLEDs - GaN-based dies on patterned sapphire substrate - have an engineered light-emission pattern using dedicated top dielectric reflectors. We think they are manufactured by HC Semitek in China.
• The chip-on-glass assembly of the more than 18,432 miniLEDs is believed to be done by BOE in China. The miniLEDs are mounted in a flip-chip configuration.
• The Glass Circuit Board is believed to be a product of BOE in China. The metal layers are manufactured by a semi-additive process
• The miniLEDS are driven by 2048 driver dies from HYASiC.

This report provides insights regarding technology data with optical and SEM pictures showing the cross-sections and the manufacturing cost and selling price of the BLU, with a focus on the miniLEDs and their drivers. The teardown of the TV is also detailed to show the integration of the glass BLU in a TV. A comparison with the TCL and Samsung Neo QLED 2021 TVs and the Apple iPad Pro shows the different technology choices. 

Overview / Introduction

• Executive Summary
• Reverse Costing Methodology
• Glossary

Company Profile & Supply Chain

• Skyworks
• Supply Chain

Physical Analysis

• TV Disassembly
• BlackLight Unit
• miniLED
  • Views & Dimensions
  • Cross-Section
• miniLED Driver IC
  • Views & Dimensions
  • Delayering
  • Die Cross-Section
  • Die Process Characteristics

Manufacturing Process Flow

• MiniLED Front-End Fab Unit and process
• MiniLED Driver Front-End Fab Unit
• GB panel Fab Unit and Process

Cost Analysis

• Supply Chain
• Yield Hypothesis
• MiniLED Cost
  • LED Front-End Cost
  • LED Die Probe Test and Dicing
  • LED Wafer and Cost
• MiniLED Driver Cost
  • Front-End Cost
  • Probe Test, Thinning and Dicing
  • Dies Cost
• Backlight Unit Cost
  • Complete Unit Cost
  • Complete Unit Price
• Comparison
  • Back Light Unit
  • Back Light Unit Cost
  • LED and Driverr

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