Apple Researching Solar Cell Ambient Light Sensors Embedded in Displays
Apple continues to explore the various ways solar cell technology can be used to enhance the operation of electronic devices with a new patent application no. 20140152632 published on Thursday by the U.S. Patent and Trademark office. The document describes a method of using solar cells as ambient light sensors for an iPad, iPhone, or other display-equipped device, reports Patently Apple. The patent application was filed in December 2012, but was just published today.
One advantage to integrating the ambient light sensor into the display would be the ability to reduce bezel sizes around the display, allowing more of the device's surface to be dedicated to display. For example, the iPhone currently includes several components embedded in the bezel above the display, including the earpiece, FaceTime camera, ambient light sensor, and proximity sensor. Moving at least some of those components into the display itself could allow Apple to reduce the height of the top bezel.
According to the patent, a solar cell's ability to sense incoming light could be connected to circuitry that adjusts the display brightness in response to the solar cell input, as with current sensors. When not being used to adjust the display, this solar cell technology could provide a trickle charge to the device's battery.
An electronic device is provided with a display and a solar cell ambient light sensor that receives light through a portion of the display. The solar cell ambient light sensor may include one or more thin-film photovoltaic cells. A voltage that accumulates within the thin-film photovoltaic cell in response to ambient light is sampled and converted into ambient light data. The device includes control circuitry that modifies the intensity of display light generated by the display based on the ambient light data from the photovoltaic cell. The solar cell ambient light sensor is attached to a transparent cover layer, a color filter layer, or any other layer of the display. When the accumulated voltage is not being sampled for ambient light measurements, the voltage may be used to provide charge to a battery in the device.
Apple has long expressed an interest in solar cell technology with patent applications and solar-related rumors extending back at least six years. More recently, Apple was awarded a patent that describes a method of integrating a solar panel into a mobile touchscreen device with a flexible display.
Popular Stories
Apple's next-generation iPhone 17 Pro and iPhone 17 Pro Max are less than three months away, and there are plenty of rumors about the devices.
Apple is expected to launch the iPhone 17, iPhone 17 Air, iPhone 17 Pro, and iPhone 17 Pro Max in September this year.
Below, we recap key changes rumored for the iPhone 17 Pro models:Aluminum frame: iPhone 17 Pro models are rumored to have an...
The long wait for an Apple Watch Ultra 3 appears to be nearly over, and it is rumored to feature both satellite connectivity and 5G support.
Apple Watch Ultra's existing Night Mode
In his latest Power On newsletter, Bloomberg's Mark Gurman said that the Apple Watch Ultra 3 is on track to launch this year with "significant" new features, including satellite connectivity, which would let you...
The upcoming iPhone 17 Pro and iPhone 17 Pro Max are rumored to have a slightly different MagSafe magnet layout compared to existing iPhone models, and a leaked photo has offered a closer look at the supposed new design.
The leaker Majin Bu today shared a photo of alleged MagSafe magnet arrays for third-party iPhone 17 Pro cases. On existing iPhone models with MagSafe, the magnets form a...
iOS 26 and iPadOS 26 add a smaller yet useful Wi-Fi feature to iPhones and iPads.
As spotted by Creative Strategies analyst Max Weinbach, sign-in details for captive Wi-Fi networks are now synced across iPhones and iPads running iOS 26 and iPadOS 26. For example, while Weinbach was staying at a Hilton hotel, his iPhone prompted him to fill in Wi-Fi details from his iPad that was already...
The iPhone 17 Pro Max will feature the biggest ever battery in an iPhone, according to the Weibo leaker known as "Instant Digital."
In a new post, the leaker listed the battery capacities of the iPhone 11 Pro Max through to the iPhone 16 Pro Max, and added that the iPhone 17 Pro Max will feature a battery capacity of 5,000mAh:
iPhone 11 Pro Max: 3,969mAh
iPhone 12 Pro Max: 3,687mAh...
Apple today seeded the second betas of upcoming iOS 18.6 and iPadOS 18.6 updates to public beta testers, with the betas coming just a day after Apple provided the betas to developers. Apple has also released a second beta of macOS Sequoia 15.6.
Testers who have signed up for beta updates through Apple's beta site can download iOS 18.6 and iPadOS 18.6 from the Settings app on a compatible...
Apple is developing a MacBook with the A18 Pro chip, according to findings in backend code uncovered by MacRumors.
Subscribe to the MacRumors YouTube channel for more videos.
Earlier today, Apple analyst Ming-Chi Kuo reported that Apple is planning to launch a low-cost MacBook powered by an iPhone chip. The machine is expected to feature a 13-inch display, the A18 Pro chip, and color options...
