US 8803836

US Patent 8803836: Concise Summary and Claim Analysis

Patent Number: US8803836B2
Title: Display device with touch panel
Inventors: Takeshi Ookawara, Noriharu Matsudate
Current Assignee: Paneltouch Technologies LLC (as of April 27, 2024)
Original Assignee: Panasonic Liquid Crystal Display Co Ltd, Japan Display Inc
Filing Date: August 14, 2013
Issue Date: August 12, 2014

Abstract:
The patent describes a display device equipped with a touch panel. This touch panel comprises a first substrate and a second substrate positioned opposite each other. Both substrates feature a detection area for sensing coordinates and an outer area for external connections. The first substrate incorporates multiple first lines for coordinate detection, while the second substrate includes multiple second lines, made of metal, within its detection area and facing the first substrate. A polarizing plate is situated on the first substrate, on the side opposite to the second substrate.

Plain-Language Overview of Independent Claims:

Independent Claim 1:
This claim describes a display device that includes a touch panel. The touch panel has two substrates: a first and a second, facing each other with a gap in between. Both substrates have a specific area to detect touch coordinates and another area for external connections. The first substrate contains several "first lines" made of metal, used for coordinate detection. Similarly, the second substrate has "second lines" also made of metal, located in the detection area and facing the first lines. A unique feature is that both the first and second metal lines are black. Additionally, a polarizing plate is attached to the first substrate on the side facing away from the second substrate. The first substrate's metal lines are organized into groups, with at least two lines in each group being electrically connected or combined.

Independent Claim 8:
This claim outlines a display device with a touch panel that includes a first substrate. This first substrate has a detection area for sensing coordinates and an outer area for external connections. Within the detection area, there are multiple "first lines" and "second lines" that cross each other, both designed for coordinate detection. This touch panel is directly attached to an organic luminescence electric device panel (like an OLED screen). Furthermore, a circular polarizing plate is affixed to the touch panel on the side opposite to the organic luminescence electric device panel.

Litigation/PTAB Status (as of April 26, 2026):

• PTAB Case: IPR2025-01246 was filed against US Patent No. 8,803,836. A Patent Owner's Request for Discretionary Denial of Institution was submitted. The decision on whether to institute the IPR was due by January 21, 2026. The Google Patents record indicates that this case was "filed (Settlement)," suggesting the proceeding may have concluded via settlement. No further updates beyond this status and the discretionary denial brief are readily available in the search results.
• District Court Litigation: While the Google Patents record for US8803836 lists "US case filed in Texas Eastern District Court" with case number 2:25-cv-00245, the complaint for this specific case clearly indicates that the asserted patent is US Patent No. 11,126,025, not US8803836. Therefore, based on the search results, this particular district court case is not directly related to US patent 8803836.
• CAFC Dockets: There is no specific mention of US patent 8803836 in the available CAFC 2026 dockets from the search results.