5 inch In-cell TFT Display MIPI ST7123P IPS

Product Introduction of In-cell TFT Display

This 5.0-inch In-cell TFT Display from HOTHMI (model TFT-H050A20HDIST6G30) features a crisp 720×1280 pixel resolution and a slim profile of 64.70×118.70×2.90 mm. The module uses an MIPI display serial interface, is built around the ST7123P driver IC, and comes with a high-transparency glass cover that supports up to 5-point capacitive touch. With a typical contrast ratio of 1500:1 and luminance ranging from 600 to 700 cd/m², it delivers vivid, full-viewing-angle color reproduction even in changing lighting conditions. Rated for operation from -20℃ to +70℃, it also offers excellent shock resistance and ESD protection, making it a professional-grade LCD solution that combines quality, reliability, and superior optical performance.

Key Design Highlights

• Superior In-cell 5-Point Touch Integration：Traditional capacitive screens rely on an external touch layer, which adds thickness and can introduce optical parallax. This display integrates the touch sensor matrix directly into the liquid crystal pixel array, reducing internal reflective interfaces, improving visibility in ambient light, and eliminating the risk of dust ingress. It supports up to 5 simultaneous finger touches and maintains fast response and high tracking accuracy even in electrically noisy environments.
• Wide Viewing Angle and 1500:1 Ultra-High Contrast：Thanks to advanced normally-black vertical alignment technology, the screen offers exceptionally wide symmetric viewing angles, with typical values of U85/D85/R85/L85. Combined with a typical contrast ratio of 1500:1, dark areas appear deep and pure, color saturation remains uniform, and there is no color shift or inversion even at steep viewing angles.
• HD Resolution: Within an active area of 61.776 × 109.824 mm, the 720 × 1280 pixel resolution ensures sharp text rendering and fine image detail.
• High-Brightness Backlight Array：The backlight is driven by an optimized series-parallel LED array, delivering up to 600 cd/m² absolute brightness with the capacitive touch cover glass installed (and up to 700 cd/m² typical without touch). Under constant-current driving conditions of 19.0 V / 80 mA, the backlight has a rated service life of 30,000 hours (until brightness decays to 50% of its initial value).
• Rugged Protection and Wide-Temperature Durability：The In-cell TFT Display module comes with a factory-installed high-strength glass cover that offers 6H pencil hardness scratch resistance while maintaining ≥80% light transmittance. It operates reliably across a wide temperature range from -20°C to +70°C, making it suitable for demanding and variable usage environments.

Pin Configuration and Signal Definition

The In-cell TFT Display module connects to the host board via a 30-pin fine-pitch board-to-board FPC interface, which integrates 4-lane high-speed MIPI signals, low-power I2C touch communication, system power lines, and backlight drive loops.

Typical Application Scenarios of In-cell TFT Display

With its slim, space-saving form factor, all-weather readability, and high data bandwidth, this In-cell TFT Display module is well-suited for a wide range of mid-to-small-size premium embedded display applications:

• Industrial Control Terminals and High-End HMIs：Industrial environments often involve temperature fluctuations, metal dust, mechanical vibration, and strong electromagnetic interference. The 6H glass cover and noise-tolerant ST7123P controller ensure stable operation, while the high resolution guarantees accurate rendering of complex data and monitoring charts on industrial dashboards.
• Medical Analysis and Bedside Monitoring Equipment：Portable ultrasound devices, infusion pump controllers, and laboratory analyzers require quick, error-free reading from multiple angles. The module’s U85/D85/R85/L85 full-viewing-angle performance significantly reduces the risk of misreading due to oblique viewing angles.
• Smart Home Control Panels and Video Doorbell Systems：Modern in-wall thermostats and home multimedia controllers demand ultra-thin designs for flush mounting. The thickness reduction enabled by In-cell technology allows seamless integration into slim enclosures, while the 600–700 nit brightness ensures clear visibility even under strong afternoon indoor sunlight.
• Handheld Logistics Terminals and Mobile Retail POS Devices：Logistics, delivery, and field enforcement equipment are often used outdoors in bright sunlight and are subject to frequent drops. The high transmittance, high brightness, and scratch-resistant cover glass ensure that shipping documents and barcodes remain clearly visible in outdoor conditions.

Technical Q&A of In-cell TFT Display

Q1: What are the core advantages of an In-cell TFT Display compared to traditional On-Cell or OGS solutions?

Traditional touch modules typically require an additional separate touch sensor layer to be laminated on top of the LCD cell using OCA optical adhesive. This stacking approach inevitably increases overall thickness and introduces extra reflective layers.

In contrast, the In-cell TFT Display process integrates the transparent capacitive touch drive and sense electrode matrix directly into the internal structure of the color filter and TFT array during the front-end manufacturing of the LCD panel. This delivers three major advantages:

Extreme Thinness: Compared to external lamination, the total display-and-touch thickness is reduced by approximately 0.5 mm to 1 mm, perfectly suiting the minimalist, ultra-slim mechanical designs of modern mobile devices.

Enhanced Optical Performance: By eliminating the air gap or adhesive refractive layer between the touch and display layers, light passes through more directly, reducing interface reflectance significantly. This results in more vivid, transparent images at the same power consumption.

Elimination of Ghost Touch Due to Physical Deformation: When the screen is pressed, force is applied directly to the integrated LCD layer, leading to low touch-response latency and more accurate, fluid tracking.