LMG7421PLBC KOE  5.1 inch 240×128 lcd display screens
LMG7421PLBC KOE 5.1 inch 240×128 lcd display screens
Price: £74.12
£70.22/ piece
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LMG7421PLBC KOE  lcd display screens
LMG7421PLBC KOE  lcd display screens
LMG7421PLBC KOE  lcd display screens
LMG7421PLBC KOE  lcd display screens

LMG7421PLBC KOE 5.1 inch 240×128 lcd display screens

Price: £74.12
£70.22/ piece
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LMG7421PLBC KOE 5.1 inch 240×128 lcd display screens

Product Information Product Specifications
Model:
LMG7421PLBC
Brand:
KOE/HITACHI
Application:
Industrial
Size:
5.1"
Resolution:
240×128, 17:9
Lamp Type:
1 pcs CCFL, No Driver
Panel Type:
STN-LCD, LCM-
Active Area:
119.97×63.97 mm (H×V)
Outline:
159.4×101 mm (H×V)
Ordering instructions
Quality:
test ok before ship it
RMA Policy:
RMA 6 month
Sample:
Paid Sample
Stock:
301
Stock Location:
China
Delivery:
WorldWide
Lead Time:
1-3 Days
Weight:
0.500 KG
Overview

LMG7421PLBC is a classic 5.1-inch monochrome STN-LCD liquid crystal module originally developed and manufactured by Hitachi Ltd., later produced by KOE (JDI Group). Based on the official industrial specification (released in 2002), this panel features a 17:9 wide aspect ratio, 50 PPI pixel density, and blue mode negative transmissive display, delivering stable text and graphic performance for industrial applications.


It adopts STN (Super Twisted Nematic) technology, providing 40°/40°/40°/40° viewing angles (CR≥2). The panel uses a single CCFL backlight system without integrated driver, offering a typical brightness of 150 cd/m² and a lifespan of 10,000 hours. With a compact design of 159.4×101×11.0 mm and parallel 8-bit data interface, it is widely used as a replacement panel for older industrial control systems and medical equipment.


 LMG7421PLBC KOE  lcd display screens Highlights:

Classic Industrial Design: Proven reliability with over 20 years of field use in industrial environments

Hitachi Original Quality: Stable performance and consistent quality from Hitachi's manufacturing process

Monochrome Blue Mode: High contrast text display ideal for industrial control interfaces

Standard Parallel Interface: Widely compatible with most older industrial control boards

Compact Form Factor: Small size perfect for space-constrained embedded systems

Available Replacement Stock: Limited but stable stock for urgent legacy equipment replacement

Low Power Consumption: 5.0V low voltage supply, energy-efficient for long-term operation


LMG7421PLBC KOE  lcd display screens  Specification:

ParameterSpecification
Panel BrandHitachi (KOE/JDI Group)
Panel ModelLMG7421PLBC
Alternative NamesLMG742LPLBC, 1MG7421P1BC
Panel Size5.1 inches (diagonal)
Panel TypeSTN-LCD, Liquid Crystal Module (LCM)
TechnologySTN (Super Twisted Nematic), Blue Mode, Negative, Transmissive
Resolution240 × 128 (Monochrome)
Pixel Density50 PPI
Pixel Pitch0.50 × 0.50 mm (H×V)
Pixel FormatRectangle
Aspect Ratio17:9 (W:H)
Active Area119.97 (W) × 63.97 (H) mm
Bezel Opening124.0 (W) × 70.0 (H) mm
Outline Dimensions159.4 (W) × 101.0 (H) × 11.0 (D) mm (Max)
MountingFace mounting holes (4-Φ3.0)
Brightness150 cd/m² (Typical)
Contrast Ratio20:1 (Typical)
Viewing Angle40°(L)/40°(R)/40°(U)/40°(D) (Typical, CR≥2)
Display ColorsMonochrome (Blue/White)
Response Time200 ms (Typical)
Refresh Rate60 Hz
Backlight TypeSingle CCFL Tube, Without Driver
Backlight Lifespan10,000 hours (Typical)
InterfaceParallel Data (8-bit), CPU Interface
Supply Voltage5.0V (Typical)
Operating Temperature-10 ~ 60 °C
Storage Temperature-20 ~ 70 °C
Weight0.3 kg (Typical)
Touch ScreenNot Integrated
Production StatusDiscontinued
Stock Quantity126+ pieces (as of May 2026)

LMG7421PLBC KOE  lcd display screens  Applications:

Industrial Control Panels

HMI (Human-Machine Interface) Displays

PLC Control Systems

Medical Equipment Replacement Screens

Injection Molding Machine Displays

CNC Machine Tool Monitors

Test and Measurement Instruments

Security Monitoring Systems

Vending Machine Displays

Embedded Industrial Systems


FAQ:

Q1: Is LMG7421PLBC still in production?

A1: No, Hitachi discontinued the production of LMG7421PLBC many years ago. However, we maintain a limited stock of original new and tested used panels for replacement purposes.

Q2: What is the difference between LMG7421PLBC and LMG7420PLFC?

A2: The main difference is the display mode. LMG7421PLBC uses blue mode negative display, while LMG7420PLFC uses green mode positive display. Both panels have the same resolution, interface and mechanical dimensions.

Q3: Is LMG7421PLBC compatible with my industrial system?

A3: LMG7421PLBC uses a standard parallel 8-bit CPU interface. Please check your system's original panel model and interface type before purchasing. It is compatible with systems that originally used LMG7421PLBC or its alternative names.


Product Comparison
Model:
Size:
Resolution:
Brightness:
Contrast Ratio:
Viewing Angle:
Lamp Type:
Signal Interface:
Panel Type:
LMG7421PLBC KOE  5.1 inch 240×128 lcd display screens

LMG7421PLBC KOE 5.1 inch 240×128 lcd display screens

LMG7421PLBC

5.1"
240×128, 17:9
1 pcs CCFL, No Driver
STN-LCD, LCM-
 LMG7380QHFC  KOE 4.8 inch  lcd panel

 LMG7380QHFC KOE 4.8 inch lcd panel

 LMG7380QHFC

4.8"
256×64 54PPI
90
20:1
40 (Typ.)(CR≥2, Φ2-Φ1)
CCFL
20 pins
FSTN-LCD, LCM
KOE LMG7420PLFC-X 5.1" FHD 1920x1080 TFT LCD Panel

KOE LMG7420PLFC-X 5.1" FHD 1920x1080 TFT LCD Panel

LMG7420plfc-x

5.1"
1920(RGB)×1080, FHD 157PPI
150 cd/m² (Typ.)
20 : 1 (Typ.) (TM)
40/40/40/40 (Typ.)(CR≥2)
CCFL [1 pcs] , 50K hours , W/O Driver
8-bit parallel , 20 pins Connector
a-Si TFT-LCD, LCM
LMG7421PLBC is a 5.1" STN-LCD, LCM- Display screen Product from KOE/HITACHI.According to KOE/HITACHI's product specification sheet,LMG7421PLBC display has a resolution of 240×128, 17:9, Contrast Ratio is ,Viewing Angle is ,Lamp Type is 1 pcs CCFL, No Driver,Signal Interface is ,Brightness is .Based on its characteristics, this model is recommended for application in Industrial and other products.The weight of LMG7421PLBC after packaging is 0.500KG.We have made every effort to minimize weighing variances; however, we cannot guarantee absolute accuracy.
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Original Factory-Sealed Panels

Every unit is sourced directly from AUO Optronics through Zhiyan's first-hand supply channel. No refurbished, no B-grade. Factory seal intact.

100% Original | Factory Sealed
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100% Pre-Ship Testing & 6-Month RMA

Each panel passes through our six-step quality chain—incoming, display, appearance, interface, packaging, and tracking. Backed by a 6-month RMA.

Test OK Before Ship | RMA 6 Months
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99 Units In Stock · Ships in 1–3 Days

Stocked in our Shenzhen Longhua warehouse. Standard lead time 1–3 business days; quotations returned within 24 hours.

99 In Stock | Lead Time 1-3 Days
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Worldwide Shipping with Full Tracking

DHL, FedEx, UPS and TNT available. ESD-safe packaging. Typical door-to-door delivery: 5–7 business days globally.

DHL · FedEx · UPS · TNT | Worldwide

Quality issue? Return freight is on us. Damaged in transit? We cover it in full.

Why 1,000+ Engineers Trust Zhiyan Since 2013

factory 18 Years of Industrial LCD Supply Chain Expertise

  • warehouse 30,000+ m² ready-to-ship warehouse with tens of millions of dollars of LCD inventory on hand
  • category 100,000+ LCD models covered — from mainstream panels to discontinued & hard-to-find EOL models
  • groups 200+ staff, including a dedicated engineering team of 10+ for pre-sales matching and after-sales support
  • handshake Direct factory sourcing from Kyocera, KOE, and NANYA; long-standing supply partnerships across Taiwan and South Korea
  • sync One-stop service: sourcing → evaluation → testing → packaging → global logistics → technical support

fact_check 6-Step Inspection — No Panel Ships Untested

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monitor Display Test
visibility Appearance
settings_input_component Interface
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  • done_all Every panel is visually inspected, electrically powered-on tested, and interface-verified before packing
  • inventory_2 Anti-static, shock-proof professional packaging for international transit
  • verified What you see is what you get — product consistent with description, or return freight on us

verified_user Verified by Third Parties, Compliant in Your Market

Alibaba Verified Supplier Certificate
CITEO Membership Certificate
Der Grüne Punkt License
LUCID Registration Certificate
  • check TÜV Rheinland On-Site Verified Supplier (Alibaba.com Verified Supplier, Cert. No. 139632585_T) — factory audit covering production capacity, quality assurance & R&D
  • check EU Authorized Representative (EC REP) appointed — EUREPSTAR GmbH, Germany, valid 2025–2027, CE technical files maintained
  • check CITEO Registered (France, packaging EPR compliance, ID: FR293377_01SEXD)
  • check Der Grüne Punkt Licensed (Germany, VerpackG packaging compliance, Reg. No. DE4833497804557)
  • check All panels RoHS 2.0 compliant, lead-free, mercury-free WLED backlight
  • check Registered company: Shenzhen Zhiyan Optoelectronics Co., Ltd. — VAT/Reg. No. 91440300MA5GQNC36C

precision_manufacturing Trusted Across 13+ Industries Worldwide

Industrial Automation

HMI panels & factory control displays for automation integrators

Medical Devices

Auxiliary diagnostic & monitoring displays for medical device makers

POS/ATM

Replacement screens & bulk supply for POS/ATM manufacturers

Marine Electronics

Marine navigation display modules

Repair Market

EOL & obsolete panel sourcing for global repair centers

Embedded / OEM

Custom display solutions: touch bonding, brightness, cables, OEM labeling

Send us your LCD model number, application and quantity — our engineers will recommend a compatible solution within 24 hours.

local_shipping In Stock. Tested. Shipped in 1–3 Days.

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1–3 day lead time for in-stock items; same-day dispatch available in some cases

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Worldwide shipping via express couriers, full tracking from warehouse to door

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Every order follows the same chain: Warehouse → QC → Packaging → Shipping → You

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Transportation damage covered by us — zero risk on your side

What Buyers Say — 4.8/5 from Verified Orders

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local_shipping On Delivery

"My package arrived at the expected date (6 days after the purchase) and in good condition."
— Verified Buyer, Nov 2025

"Fast shipping, good communication, goods as described, will buy again."
— Verified Buyer, Aug 2025

support_agent On Service

"The communication with customer service was very smooth, the logistics speed was also fast, the product was consistent with the description."
— Verified Buyer, Aug 2025

"Fast delivery, competitive price, excellent support."
— Verified Buyer, Aug 2025

inventory_2 On Hard-to-Find Models & Price

"Good price for things hard to find!"
— Verified Buyer, Aug 2025

"Excellent quality, affordable price, worth recommending."
— Verified Buyer, Nov 2024

Join engineers and buyers from industrial automation, medical and marine industries — get your quotation within 24 hours.

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P************k
Nov 10, 2025
(5/5)
My package arrived at the expected date (6 days after the purchase) and in good condition
O***********E
Sep 29, 2025
(5/5)
Very nice and sharp in the choice
L***********A
Sep 12, 2025
(5/5)
ALL AS PLANNED OK
a****k
Aug 28, 2025
(5/5)
Fast delivery, Comptetive price Excellent support
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Aug 25, 2025
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Aug 21, 2025
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Fast shipping, good communication, goods as described, will buy again.
G*************i
Aug 15, 2025
(5/5)
Good price for things hard to find!
y****m
Aug 15, 2025
(5/5)
Product arrived earlier than expected. Price was also very reasonable.
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Aug 12, 2025
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The communication with customer service was very smooth, the logistics speed was also fast, the product was consistent with the description, and it was a good shopping experience.
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