2.4Gbps Test Infra Evaluation

Product & Test Engineering Team

System LSI Foundry Team

Samsung Electronics Co., LTD.

대형 LCD Module 구조

I. 중대형(Monitor&Notebook, LCD-TV)

Source PCB

Gate Signal

Gate LDI

(COF)

Source PCB

Gate PCB

TFT-LCD Panel

Gate Drive IC

Source Drive IC

1. TFT-LCD Panel ; 개개의 화소에서 빛을 제어하여 화상을 표시

2. Drive IC : TFT-LCD Panel에 화상신호 전달

3. PCB : 구동회로 실장 및 Drive IC에 신호 전달

4. Backlight Unit : CCFL의 선광원을 면광원으로 변환하여 Panel에 조사

5. Inverter : CCFL을 구동시키기 위한 AC 고전압 발생

TFT-LCD 회로구성

T-conDC/DC

Gamma Vcom

LCD Panel

Gray Scale Voltage & Vcom

Control SignalLVDS

Tx

RGB Data & Clock

LVDS

Rx

Timing

Controller

R

G

B

Vsync

Hsync

Control

Graphic

ControllerSource Driver

DC-DC

Gamma

Vcom

GUI

. . .Source Driver

TTL

3.3V

Ga

te D

rive

r IC’s

(340mV)

LVDS Input(Low EMI Bus)

Analog Part

Digital Part

LDI Frequency Increase Trend

■ Source Dirver IC 의 동작 주파수 상향 원인

1. 화면 대형화 : LCDPIN 상향

2. Frame 주파수 상향

3. DATA Line 축소 (Interface 변경)

4. LCD Driver IC의 개수 축소

Frequency (Gbps]

3

2.5

2

1.5

1

0.5

0’08.2H ’09.1H ’09.2H ’10.1H ’10.2H ’11.1H

mLVDS (660Mbps)

AiPi (~930Mbps)

Next IP : 2.4Gbps10’ Mon10

AiPi+ :1.6Gbps10’Mon07

Plan

Action

AiPi+ :1.6Gbps10’Mon01

2.4Gbps ATE & P/C Evaluation 검토

2.4Gbps Probe Card 2.4Gbps ATE

ATE Module - β-HSIF

Date 10’01/25 Done

Eval Device 1. S6CR042 (1.65Gbps Target)

ImprovementPoint

1. Needle2. MCW Shield3. PCB

1. Signal Waveform Measure2. 제품 평가

Waveform Measure

Evaluation Result - Real : 2.6Gbps

HSIF > Set Module(Max 2.1Gbps]

HSIF Waveform 측정Probe Card 주파수 특성 측정 결과

Probe Card / HSIF 측정결과

Waveform @2.5 Gbps

-10

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

10 100 1000 10000Fr equency [MHz]

Gain

[dB

]

Jitter

Std Dev:18.2ps

Pk-Pk:108ps

100ps/div

200mv/div

100ps/div

50mv/div

200mv

주파수특성 S21

Jitter

Std Dev:19.2ps

Pk-Pk:106ps

1000mv

제품평가결과

SHM_VDD1_FREQ [DVO SHM]VDD2=15.50VVAMP=300mV1.25000GHz |...............................1.22500GHz |...............................1.20000GHz |...............................1.17500GHz |...............................1.15000GHz |...............................1.12500GHz |...............................1.10000GHz |...............................1.07500GHz |...............................1.05000GHz |.................P.............1.02500GHz |...............PPPPPPPPPPPP....1.00000GHz |..............PPPPPPPPPPPPPPPPP975.000MHz |..............PPPPPPPPPPPPPPPPP950.000MHz |.............PPPPPPPPPPPPPPPPPP925.000MHz |.............PPPPPPPPPPPPPPPPPP900.000MHz |.............PPPPPPPPPPPPPPPPPP875.000MHz |............PPPPPPPPPPPPPPPPPPP850.000MHz |............PPPPPPPPPPPPPPPPPPP825.000MHz |............PPPPPPPPPPPPPPPPPPP800.000MHz |...........PPPPPPPPPPPPPPPPPPPP775.000MHz |...........PPPPPPPPPPPPPPPPPPPP750.000MHz |...........PPPPPPPPPPPPPPPPPPPP725.000MHz |..........PPPPPPPPPPPPPPPPPPPPP700.000MHz |..........PPPPPPPPPPPPPPPPPPPPP675.000MHz |.........PPPPPPPPPPPPPPPPPPPPPP650.000MHz |.........PPPPPPPPPPPPPPPPPPPPPP625.000MHz |........PPPPPPPPPPPPPPPPPPPPPPP

------------------------------- vdd11111112222222222333333333344444...............................4567890123456789012345678901234

HSIF VDID =300mV

HSIF @1.65GbpsModule Wave Form

(Eye open<0.60UI)

8Bit 966Ch. 2.1Gbps

HSIF > Set Module : Eye Diagram 으로 확인한 Waveform 우수