讀後心得

Google has developed a new wireless charging technology, embedding the charging coil beneath the smartphone screen. In the future, it will be possible to charge each other through the screen without the need to flip the device over, enhancing convenience. This patent is titled "Wireless Charging Through a Display," allowing the smartphone screen to not only receive power but also to charge devices like wireless earbuds. Currently, this technology is still in the early development stage, and whether it will be practically applied in the future remains to be seen.

Can you imagine? The future smartphone screens may not only be used for swiping, but also for "charging each other"? This is Google's latest innovative technology. According to patent information released on March 27, 2025, Google is developing a brand new wireless charging technology that embeds "charging coils" directly under the smartphone screen, enabling the function of "screens can also transmit electricity," and even allows for "screen to charge the phone" or "screen to charge headphones" wirelessly!

This patent is named "Wireless Charging Through a Display," with the application number 18294508. The patent describes Google's plan to hide the wireless charging coils beneath the device's screen, thereby achieving the innovative technology of transmitting power through the screen. Traditional wireless charging requires the smartphone's back to be placed directly against the charging pad, which is very inconvenient for screen operation. Google's patented concept allows the smartphone screen to also serve as a medium for receiving or transmitting power, enabling charging without flipping the phone, which not only enhances usability but also reduces the risk of screen wear.

The smartphone transforms into a "mobile power station" and can also charge other devices! Interestingly, this patent mentions two application scenarios:

• Receiving mode: Place the smartphone screen down on a wireless charging pad to receive power through the screen without flipping it over.
• Transmitting mode: Devices with built-in charging coils can actively transfer power to other devices through the screen, such as wireless headphones, smartwatches, and other accessories, even allowing for power sharing between devices.

According to the illustrations in the patent, when the device detects a compatible wireless charger, the screen and touch sensing will temporarily disable to optimize power transmission efficiency. To achieve this, Google has designed adjustments in the display's shielding layer structure to balance display effectiveness and charging performance.

How long until this technology matures? Whether Google will actually launch this technology remains to be seen. Although this technology sounds fantastical, like many patents, it is still in the early stages of development. However, this innovative wireless charging technology opens up greater imaginative possibilities for the future development of smartphones and showcases potential future technological directions. The smartphone screen may not only serve the function of viewing but also receive power, and even become a charging source for other devices.