GM Pixel Windshield Patent 2026: How the Glare-Blocking Glass Works

© A. Krivonosov

General Motors is working on an unusual alternative to the traditional sun visor. Patent application US 2026/0225431 A1, published on August 6, 2026, describes a windshield or side window capable of dimming only a small area in front of a bright light source, without reducing visibility across the rest of the glass.

The application was filed back on February 4, 2025, by GM Global Technology Operations. The idea centers on an electrochromic layer split into many independently controlled zones — essentially “pixels.” Voltage is applied only to the zones that need it, so the whole windshield doesn’t have to darken when the sun is low. The filing even considers pentagonal and hexagonal zones: smaller elements should change opacity faster and block a glare source more precisely.

The most unusual part of the system sits inside the cabin. A camera tracks the position of the driver’s head and gaze direction, while a controller analyzes reflections of bright objects on the cornea of the eye. The electronics then determine exactly which section of the glass the driver is looking through to see the sun or, say, the headlights of an oncoming car, and dim the corresponding pixels. If there are multiple light sources, the system can handle them separately.

A predictive mode is also included. Using route data and the vehicle’s position, the electronics can calculate the sun’s future position and dim the needed area before the beam ever reaches the driver’s eyes. While driving, the darkened zones are meant to keep shifting as the car’s and the person’s head position change. For GM, the idea of automatic sun protection itself isn’t new.

The company previously received a patent for a system that calculates glare in advance based on route, direction of travel and the sun’s position, then automatically operates a sun shade. The new development goes further: instead of a physical screen, it proposes controlling the transparency of the glass itself.

Still, it’s too early to turn this patent into an announcement of a new option for Cadillac, Chevrolet or GMC. The filing doesn’t name a specific production model, a rollout timeline or a price for the technology. A patent captures a technical concept, but on its own it doesn’t confirm that this kind of windshield will actually reach the assembly line.

Earlier, SPEEDME.RU reported that General Motors is working on a system for charging several electric vehicles at once.