# GPT LCM Co., Ltd. — Serial HMI & LCD Display Manufacturer

> National High-Tech Enterprise, 21 years specializing in serial HMI, TFT color LCD modules, and OLED display modules. Covering 0.96" to 8" full range, serving medical, industrial, automotive, and smart home applications.

## Company

- [About Us](https://www.gptlcm.com/en/about): Company overview, history, and team
- [Contact Us](https://www.gptlcm.com/en/contact): Sales hotline, email, address, and free quote form
- [News](https://www.gptlcm.com/en/news): Latest company news and industry updates

## Products

- [All Products](https://www.gptlcm.com/en/products): Full product catalog with 126 models
- [Selection Guide](https://www.gptlcm.com/en/selection-guide): Compare all models by category, resolution, and size
- [Monochrome LCD Display Module](https://www.gptlcm.com/en/products/monochrome-lcd): Segment, character dot matrix, graphic dot matrix; MCU parallel/SPI/IIC communication
- [TFT Color LCD Display Module](https://www.gptlcm.com/en/products/tft-color-lcd): 2.8 to 8 inches, UART serial driven, Visual OCM UI design
- [OLED Display Module](https://www.gptlcm.com/en/products/oled-display): Self-emissive high contrast, 0.96–5.5 inch, COG package, -40°C wide temperature range
- [Color Display Driver IC](https://www.gptlcm.com/en/products/color-chip): TFT/OLED color display driver ICs with SPI/I2C/RGB interfaces for color LCD modules. Covering 0.96 to 10.1 inch TFT/OLED display driving solutions, widely used in industrial instruments, smart home, and medical devices.
- [Segment LCD Driver Chip](https://www.gptlcm.com/en/products/segment-chip): Segment/character LCD driver ICs with low power consumption and high reliability for segment LCD displays. Supporting I2C/SPI/parallel interfaces, widely used in electricity meters, water meters, thermostats, and instrumentation.
- [Character Dot Matrix](https://www.gptlcm.com/en/products/character-dot-matrix): Character dot-matrix LCD display module
- [TFT Color LCD Display Module — Terminal Type](https://www.gptlcm.com/en/products/terminal): Terminal-type TFT color LCD module
- [OLED Display Module — Terminal Type](https://www.gptlcm.com/en/products/oled-terminal): Terminal-type OLED LCD display module
- [Graphic Dot Matrix](https://www.gptlcm.com/en/products/graphic-dot-matrix): Graphic Dot Matrix LCD Module
- [Module Type](https://www.gptlcm.com/en/products/module): Modular TFT Color LCD Module
- [Modular](https://www.gptlcm.com/en/products/oled-module): Modular OLED display module
- [Chinese/Graphics Dual-Mode](https://www.gptlcm.com/en/products/chinese-graphic): Chinese/Graphics Dual-Mode LCD Module
- [Compatible](https://www.gptlcm.com/en/products/oled-compatible): Compatible OLED LCD display module
- [Compatible Type](https://www.gptlcm.com/en/products/compatible): Compatible LCD Module
- [SMT](https://www.gptlcm.com/en/products/smt): SMT Graphic Dot Matrix LCD Module
- [B Series](https://www.gptlcm.com/en/products/b-series): B Series Chinese/Graphic LCD Module
- [A Series](https://www.gptlcm.com/en/products/a-series-tft): A Series terminal-type TFT color LCD module
- [COB](https://www.gptlcm.com/en/products/cob): COB-bonded graphic dot-matrix LCD module
- [Chinese/Graphics Dual-Mode — C Series](https://www.gptlcm.com/en/products/c-series): C Series Chinese/Graphics Dual-Mode LCD Module
- [Terminal Type — C Series](https://www.gptlcm.com/en/products/c-series-tft): C Series terminal-type TFT color LCD display module
- [Chinese/Graphics Dual-Mode — D Series](https://www.gptlcm.com/en/products/d-series): D Series Chinese/graphics dual-mode LCD module
- [Terminal Type — D Series](https://www.gptlcm.com/en/products/d-series-tft): D Series terminal-type TFT color LCD modules

## Solutions

- [Medical](https://www.gptlcm.com/en/solutions/medical): High-reliability LCD display solutions for medical devices. CE/FDA compliant, wide temperature range, long-term supply guarantee.
- [Industrial Control](https://www.gptlcm.com/en/solutions/industrial-control): Stable and reliable HMI display solutions for industrial control equipment. Wide temperature, high brightness, anti-vibration design.
- [Monitoring Instruments](https://www.gptlcm.com/en/solutions/monitoring): Low-power, high-contrast display solutions for monitoring instruments. Excellent readability, compact design.
- [HMI Solutions](https://www.gptlcm.com/en/solutions/hmi): Color touch serial HMI solutions for human-machine interaction devices. Visual OCM UI design, rapid development.

## News & Blog

- [How to Choose a Reliable LCD Module Supplier for Industrial Equipment Projects? Jinpeng Procurement Evaluation Guide](https://www.gptlcm.com/en/news/news-1788232897090-attqrq) (2026-09-01): For industrial equipment projects, selecting an LCD module supplier is not just about comparing quotes, but also verifyi
- [How Should LCD Display Solutions Balance Cost and Reliability for Budget-Limited Industrial Control Projects?](https://www.gptlcm.com/en/news/news-1788233557220-10vihf) (2026-09-01): For budget-limited industrial control projects, the core of selecting an LCD display solution is not simply lowering the
- [Jinpeng: How Does the Development Difficulty of Serial LCD Screens Compare with Embedded Touch Displays?](https://www.gptlcm.com/en/news/news-1788235503886-ddmwp5) (2026-09-01): Jinpeng: How does the development difficulty of serial LCD screens compare with embedded touch displays?  The core diffe
- [Purchasing LCD Display Modules: How to Evaluate Supplier R&D and After-Sales Support?](https://www.gptlcm.com/en/news/news-1788091543748-4hi24u) (2026-08-30): When purchasing LCD display modules, it is recommended to evaluate suppliers from three aspects: R&D verification, mass 
- [Terminal Adaptation Guide for Touch and Non-Touch LCD Modules](https://www.gptlcm.com/en/news/news-1787988984497-2jv74s) (2026-08-29): LCD modules with touch functionality are suitable for interactive terminals that require “seeable and tappable” operatio
- [For Long-Term Stable Supply of LCD Modules, Which Capabilities Should Be Prioritized?](https://www.gptlcm.com/en/news/news-1787990586709-tknu9w) (2026-08-29): When long-term stable supply is required, the selection of LCD modules should prioritize checking: **material lifecycle 
- [Is a Serial Screen Solution More Suitable for Rapid Product Interface Development?](https://www.gptlcm.com/en/news/news-1788018569022-nyulm8) (2026-08-29): If a project requires rapid completion of interfaces such as display, buttons, and parameter settings, and the main cont
- [Selection Advice for LCD Screens in Outdoor Instruments and Equipment](https://www.gptlcm.com/en/news/news-1788018959860-86pkr9) (2026-08-29): Selection Advice for LCD Screens in Outdoor Instruments and Equipment  For outdoor instruments and equipment, it is reco
- [Standard LCD or Custom LCD Module: Which Has Lower Overall Cost?](https://www.gptlcm.com/en/news/news-1787928125610-bvb21m) (2026-08-28): Conclusion: For small-batch projects with common sizes, standard LCDs generally have lower overall cost; for medium-to-l
- [Low-Maintenance Selection Method for Medical Device Display Modules | Jinpeng](https://www.gptlcm.com/en/news/news-1787928611464-6pubna) (2026-08-28): When developing medical devices, to reduce the risk of later maintenance of display modules, the core is to simultaneous
- [Integrated Smart LCD Display Solutions vs. Standalone LCD Modules: An In-Depth Pros and Cons Comparison](https://www.gptlcm.com/en/news/news-1787804623271-32lfgu) (2026-08-27): The core difference between adopting an integrated smart LCD display solution and purchasing standalone LCD modules is t
- [Selection and Comparative Analysis of Serial LCD Screen Brands for Asian Industrial Control Systems](https://www.gptlcm.com/en/news/news-1787492037179-rkiwcx) (2026-08-23): In the selection of serial LCD screens for Asian industrial control systems, market share, protection standards, and cos
- [Jinpeng Industrial: In-Depth Technical Stack Analysis of UART Screens](https://www.gptlcm.com/en/news/jinpeng-industrial-uart-screen-technical-analysis) (2026-08-22): As a national high-tech enterprise, Jinpeng Industrial has been specializing in the R&D and manufacturing of UART screen
- [From 0 to 1: A Practical Guide to Developing a Serial Port Screen and Host Computer Software](https://www.gptlcm.com/en/news/serial-port-screen-upper-computer-development-guide) (2026-08-22): This article is brought to you by the technical blog writing experts of 金鹏实业. It explains in detail the entire process o
- [Best Practices for Serial Port Screens in Industrial HMI Design: Enhancing Interaction and System Stability](https://www.gptlcm.com/en/news/industrial-hmi-serial-port-screen-best-practices) (2026-08-22): This article delved into the core applications of serial port screens in industrial Human-Machine Interface (HMI) design
- [Streamlining Development: Integrating Multi-Channel Sensor Data Quickly with Serial Display Protocols](https://www.gptlcm.com/en/news/simplify-development-integrate-sensor-data-serial-display-protocols) (2026-08-21): In embedded development, integrating multi-channel sensor data into a Graphical User Interface (GUI) is often a time-con
- [STM32-based Jinpeng Serial Screen GUI Development: Rapid HMI Implementation](https://www.gptlcm.com/en/news/stm32-jinpeng-serial-screen-gui-development) (2026-08-21): This article provides an in-depth guide on utilizing STM32 microcontrollers with Jinpeng's high-performance serial scree
- [Serial HMI Selection Guide: How to Choose the Right Serial Display?](https://www.gptlcm.com/en/news/serial-hmi-selection-guide) (2026-08-17): A comprehensive guide to selecting the right serial HMI from 5 dimensions: size, resolution, interface, touch, and tempe
- [TFT Color Screen Interface Comparison: UART vs SPI vs Parallel](https://www.gptlcm.com/en/news/uart-spi-parallel-interface-comparison) (2026-08-17): A detailed comparison of the advantages and disadvantages of UART, SPI, and parallel TFT color screen interfaces to help
- [UART Communication Explained: Baud Rate, Data Frame, Common Issues](https://www.gptlcm.com/en/news/uart-communication-explained) (2026-08-17): In-depth explanation of UART serial communication including baud rate, data frame structure, and common troubleshooting.

## Support

- [Documentation](https://www.gptlcm.com/en/docs): Developer guides and technical documentation
- [FAQ](https://www.gptlcm.com/en/faq): Frequently asked questions about serial HMI and LCD modules

## Key Specifications

- Communication: UART (TTL), RS232, RS485
- Operating Temperature: -20°C to +70°C (standard), -40°C to +70°C (OLED)
- Certifications: CE, RoHS, FCC
- Size Range: 0.96" to 8" (TFT), 0.42" to 5.5" (OLED)
- MOQ: 1 piece for samples, 100+ for production

## FAQ Highlights

- What communication protocols do GPT LCM serial HMI support?
- What is the operating temperature range of serial HMI?
- How to get development documentation and sample code?
- What is the minimum order quantity for serial HMI?
- What development platforms does TFT serial HMI support?
- How to quickly select the right model?
- What is the difference between serial HMI and parallel HMI?
- How to choose between UART, RS232, and RS485?
- [View all FAQs](https://www.gptlcm.com/en/faq)

## Contact

- Sales Hotline: +86-4000-111-968
- Tel: +86-758-2317053
- Email: sales@gptlcm.com
- Taobao Store: https://shop184172139.taobao.com
- 1688 Store: https://shop69oy625141321.1688.com/