In the multi-billion-dollar TWS (True Wireless Stereo) market, where features are increasingly homogenized, audio quality, noise cancellation, and battery life have become basic expectations. The real differentiator lies in enhancing user experience and providing more intuitive communication of key information.
By integrating an ultra-thin, power-efficient, high-contrast PMOLED display into the charging case, essential information becomes available at a glance. Say goodbye to the hassle of pulling out and unlocking your phone, and embrace a more intuitive, upgraded user experience.
Users often have to unlock their phones and open an app just to check the battery or connection status. These brief yet tedious steps degrade the user experience. The ability to see this information instantly adds significant convenience and value. A PMOLED micro-display is the key to enabling this real-time, seamless interaction.
Eliminate battery anxiety with at-a-glance clarity. The battery levels of both earbuds and the charging case are displayed the moment you open it. Precise percentage readouts and intuitive icons transform uncertainty into confidence. Subtle charging animations not only serve as a functional indicator but also add a touch of sophistication to the product's design.
From a Bluetooth pairing progress bar to icons for ANC/Transparency mode switching and a mute symbol during calls, all critical information is presented in real time. Users no longer need to guess if their device is functioning correctly; they can stay focused and enjoy their music or calls without interruption.
The brand logo can appear with a "breathing" animation the instant the case is opened. Limited-edition models can feature exclusive patterns. A PMOLED display turns the TWS charging case into a dynamic stage for brand expression, effectively distinguishing high-end products from competitors and highlighting their premium value.
In the after-sales process, the charging case screen can display error codes or icons to help users quickly troubleshoot issues. For advanced applications, it can show firmware versions or update statuses, making diagnostics at repair centers more precise and efficient.
Among micro-display solutions, PMOLED stands out with its unique attributes that perfectly meet the stringent requirements of wearable devices.
| Feature | PMOLED | Conventional LCD | E-Paper | MicroLED |
|---|---|---|---|---|
| Structural Thickness | Ultra-thin (<1.5mm) | Thick (requires backlight) | Thin | Thin |
| Power Consumption | Extremely low (self-emissive) | High | Extremely low (static) | Low |
| Contrast Ratio | Extremely high (>10,000:1) | Low (<1,000:1) | Low | Extremely high |
| Response Time | Fast (µs) | Slow (ms) | Extremely slow (low refresh rate) | Fast |
| Outdoor Visibility | Good readability due to high contrast | Poor | Excellent | Excellent |
| Mass Production Maturity | High | High | High | Developing, high cost |
PMOLEDs are self-emissive, eliminating the need for the backlight module required by conventional LCDs. This results in an extremely simple and thin structure (<1.5mm) that can be easily integrated into the compact housing of a TWS charging case, unlocking greater design freedom.
As a self-emissive technology, only the pixels that are lit consume power. This makes its power consumption extremely low (standby in the µW range), perfectly matching the "long standby, instant display" usage pattern of TWS devices.
A microsecond-level response time allows for the fluid display of various dynamic icons. Combined with a well-designed UI and optimized brightness, it delivers a truly seamless user experience.
WINSTAR offers more than just display modules; we provide one-stop integration support.
We collaborate with you to evaluate your power budget, delivering extremely low power consumption based on resolution, pixel ratio, and brightness to achieve microampere (µA)-level standby.
We provide professional recommendations on specifications such as the minimum FPC bending radius (e.g., ≥0.5mm) and cover lens optical design (e.g., PC/PMMA material suggestions and AR/AF coatings).
Our products pass rigorous tests, including high temperature/humidity, thermal shock, and ESD. We offer combined hardware and software screen protection solutions (e.g., partial refresh, smart sleep mode) and UI design guidelines to meet your product's lifecycle requirements.
Our standard solutions support I²C/SPI interfaces. We provide driver sample code and technical support to accelerate your development process.
To speed up your development cycle, we offer two standard PMOLED modules specifically designed for TWS applications, both featuring a highly reliable Chip-on-Glass (COG) structure.
This solution is the perfect choice for balancing slim aesthetics with core information display, ideal for mainstream models that prioritize a sleek appearance and at-a-glance battery status. It features a compact 0.91-inch screen with a 128x32 resolution and the SH1106 driver IC, integrating easily via an I²C interface.
This solution offers double the display area with a 0.96-inch, 128x64 screen, capable of supporting richer icons and animations for a superior flagship experience. Crucially, it uses the same SH1106 driver IC and supports both I²C and SPI interfaces, allowing for seamless software development and reducing the time-to-market for high-end models.
In the next phase of the TWS market, the competitive focus will shift from internal specs to external experience. A PMOLED display is a high-return investment in UX and a strategic weapon for TWS brands to build a visual moat against a sea of competitors.
A: PMOLED offers significant advantages. Unlike LCDs, which require a full backlight, PMOLED is a self-emissive technology where only the necessary pixels light up. For typical TWS use cases with a low pixel-on ratio (<20%), power consumption is extremely low. During standby, the current draw is only at the microampere (µA) level, allowing products to feature a smooth display while maintaining long-lasting battery life.
A: With its high contrast ratio, PMOLED remains clear and readable in most outdoor environments. For scenarios involving direct sunlight, the driving brightness can be increased, and the cover lens can be treated with an anti-reflection (AR) or anti-glare (AG) coating.
A: Yes, very. Our standard modules use industry-common I²C and SPI interfaces. WINSTAR provides comprehensive reference code and development boards to help engineering teams complete integration quickly.
A: WINSTAR offers flexible ordering options; the MOQ and lead time for standard modules vary by model. We also provide rapid customization services, including FPC design, glass silk-screening, and housing assembly, which can be extended to full system integration. Our R&D team will assist you with hardware and software to accelerate your product's journey to mass production. You can also request a development kit for initial evaluation.
Contact us today to get your development kit and dedicated technical support. It's time to equip your next flagship TWS product with a more intuitive and intelligent display experience!
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