US 12293691

US Patent 12293691, titled "Display device and computer readable media," was issued to Tianma Microelectronics Co Ltd and Tianma Japan Ltd, with inventors Yojiro Matsueda and Kenichi Takatori. The patent was filed on April 6, 2021, and issued on May 6, 2025.

Abstract:
The patent describes a display device featuring a display unit with a plurality of first pixels and second pixels, both comprising subpixels of three colors, alternately arranged in rows and columns. The subpixel arrangement differs between the first and second pixels. A luminance allocation unit in the device allocates the luminance of a subpixel of a first color in a first pixel to a subpixel of the same first color in an adjacent second pixel at a predetermined ratio. Similarly, it allocates luminance from a first-color subpixel in a second pixel to a first-color subpixel in an adjacent first pixel at a predetermined ratio.

Independent Claims Overview:

• Independent Claim 1: This claim defines a display device. It comprises a display unit where two types of pixels, "first pixels" and "second pixels," are alternately arranged in a grid (row and column directions). Both types of pixels contain subpixels of three different colors, but the specific arrangement of these subpixels differs between the first and second pixel types. Crucially, the device includes a "luminance allocation unit." This unit is responsible for adjusting the brightness (luminance) of a subpixel of a designated "first color." Specifically, it takes a portion of the luminance from a first-color subpixel in a first pixel and applies it to the corresponding first-color subpixel in an adjacent second pixel, and vice-versa, using a predefined ratio for these allocations.

• Independent Claim 8: This claim describes a computer-readable medium storing a program. When executed by a computer, this program performs a specific process for image display. The process involves acquiring an image signal that contains data for the same types of first and second pixels as described in Claim 1 (i.e., alternately arrayed, with different subpixel arrangements, and containing three-color subpixels). Similar to Claim 1, the program then performs luminance allocation. It allocates a portion of the luminance of a first-color subpixel from a first pixel to a first-color subpixel in an adjacent second pixel at a predetermined ratio. Concurrently, it allocates luminance from a first-color subpixel in a second pixel to a first-color subpixel in an adjacent first pixel, also at a predetermined ratio.

USPTO and CAFC Dockets:
A search of the USPTO database for US12293691B2 confirms the patent's active status and bibliographic information as detailed above.

As of April 26, 2026, the provided information indicates that litigation related to this patent family has been filed. Specifically, a PTAB case (PGR2026-00028) is pending, and a US case has been filed in the Texas Western District Court (1:25-cv-02021). However, a search of the CAFC 2026 dockets for US12293691B2 or related case numbers does not show any active appeals at the Court of Appeals for the Federal Circuit as of the current date. Given the recent filing dates of the PTAB and District Court cases (PGR2026-00028 in 2026 and 1:25-cv-02021 in 2025), it is expected that any appeals to the CAFC would occur at a later stage of these proceedings.