In the patent applications published on June 25, 2026, one LG Display Co., Ltd. filing addresses a problem every full-screen phone now confronts: how to put a camera or sensor behind the display without the OLED stack starving it of light. The application, US20260182225A1, titled simply "DISPLAY DEVICE," is a published application — not a granted patent — so what follows is a reading of the claimed scope as filed, not a statement about whether any claim will issue.

Independent claim 1 is built around a panel divided into two regions and a single added layer that does the work. The claim recites a substrate carrying a display area that comprises a first display area and a second display area located outside of it, where the second display area is configured to have a lower light transmittance for light of a first wavelength than the first display area. Onto the first display area the claim stacks the conventional OLED elements: a pixel electrode, a bank with a first opening exposing part of that electrode, an emission layer, a common electrode over the emission layer, and an encapsulation layer over the common electrode. That much is an ordinary top-emission OLED pixel.

The element that distinguishes the claim is the last one. Between the bank and the encapsulation layer, the claim inserts a light transmissive enhancement layer that overlaps with both the bank and the encapsulation layer, and it requires that at least a portion of the common electrode contacts the light transmissive enhancement layer. In plain terms, the first display area becomes a higher-transmittance window in the panel, and the inserted layer — sitting in the non-emitting gaps defined by the bank, in contact with the cathode — is what raises how much light passes straight through that window. That is the limitation that separates this claim from a generic OLED panel, and it is the phrase to watch as the application is examined.

A light transmissive enhancement layer overlapping with the bank and the encapsulation layer and disposed between the bank and the encapsulation layer, wherein at least a portion of the common electrode contacts the light transmissive enhancement layer.— DISPLAY DEVICE, US20260182225A1

The dependent claims fill in how the layer is built and what it serves. Claim 13 makes the purpose explicit: it adds an electronic device located under the substrate, overlapped with the first display area, and configured to perform a predetermined operation using the light of the first wavelength — the under-panel camera or sensor that the whole structure exists to feed. Claims 4 and 5 cover both cases where the first wavelength differs from, or matches, the wavelength the pixels emit, which read on infrared sensing and visible-light imaging respectively. Claims 14 through 16 recite the enhancement layer as inorganic, organic, or a plurality of organic/inorganic sub-layers — an index-matching-style stack. And claims 9 through 12 introduce a common electrode with a plurality of holes filled by a metal patterning layer, a second route to higher transmittance that the enhancement layer can be arranged to overlap or avoid.

Claim 17, the application's second independent claim, frames the same invention from the optics side rather than the stack-order side. It recites an infrared transmissive layer overlapping the common electrode and "having a greater infrared transmittance than the common electrode," in a first display area where a common-electrode hole is formed, with the layer carrying a first opening over each light-emitting area. Read together, the two independent claims cover the same idea — a panel sub-region engineered to pass more light to a device underneath — claimed once around a transmissive enhancement layer in the stack and once around an infrared-transmissive layer over a perforated cathode.

Where the application lands in the CPC landscape

The application's principal classification is H10K 59/879, the organic-LED-display subclass directed to arrangements for improving light transmittance through the panel — the exact corner of the art this claim occupies. That placement is itself informative: rather than being filed as a camera or image-sensor invention, the application is classified as a display-panel construction whose point is transmittance, which is consistent with a claim set whose inventive weight sits in an added panel layer rather than in any sensor downstream of it.

For readers mapping the field, the coordinate to note is that the under-display-camera problem is being solved here at the panel level by the display maker, not at the module level by a camera vendor. The claim reads on a panel where a defined sub-area is made more transparent by inserting a transmissive layer into the OLED stack and, in the alternative claim, by perforating the cathode and topping it with an infrared-transmissive film. The distinction lives entirely in those added layers; strip them out and claim 1 collapses back to a conventional pixel.

The application in context: one cluster, one publication day

The June 25 drop carried a sizable LG Display presence, and the transmittance panel does not appear in isolation. Several of the same-day applications, all titled "DISPLAY DEVICE" or "DISPLAY APPARATUS," address adjacent panel-construction problems. US20260182205A1 is directed to a panel whose second display area contains a transmissive area alongside an emission area, with a cathode separation pattern between pixel regions and a deposition-preventing pattern in the transmissive area — a different structural route to the same end of clearing a see-through window in the active area. US20260182206A1, US20260181796A1, and US20260178083A1 turn to the mechanics of bending and folding: a curved cover member with a bending-stress-relief hole, a wing-plate-and-link-arm folding mechanism, and a support structure thinned under the bending area to reduce tensile stress and prevent cracks, respectively.

Two further applications in the cluster address the panel's connection edge rather than its active area. US20260182186A1 is directed to a connection area in the non-display region where a data link line and pad electrode meet a flexible circuit board, and US20260182171A1 claims a pad insulating structure with a pad hole through which conductive structures join bonding pads to a driver-circuit chip. Read together, the cluster is a snapshot of where one assignee's panel applications were published on a single day: two routes to a transmissive sensor window on the active side, three approaches to bending and folding durability, and two filings on the bonding edge where the panel meets its driver.

Every one of these is a pending application — published, classified, examined, and for now unresolved. The under-panel-sensor filing is simply the one whose distinguishing limitation is the most legible from the face of the claim: an OLED panel with a light-transmissive enhancement layer wedged between the bank and the encapsulation, in contact with the cathode, turning a defined patch of the screen into a window bright enough for the camera or sensor sitting behind it.