DCT

2:26-cv-00433

Pictiva Displays Intl Ltd v. Samsung Display Co Ltd

Log In
Key Events
Complaint
complaint Intelligence

I. Executive Summary and Procedural Information

  • Parties & Counsel:
  • Case Identification: 2:26-cv-00433, E.D. Tex., 05/26/2026
  • Venue Allegations: Venue is alleged to be proper in the Eastern District of Texas because Defendant Samsung Electronics America, Inc. has a regular and established place of business in the district, and the foreign defendants are subject to jurisdiction in any district.
  • Core Dispute: Plaintiff alleges that Defendants' televisions and monitors incorporating "next generation" quantum dot organic light-emitting diode (QD-OLED) display panels infringe a patent related to the structure of opto-electronic components.
  • Technical Context: The technology concerns the architecture of color displays, specifically using a blue light source combined with a structured layer of quantum dots for color conversion and filters to produce a full-color image.
  • Key Procedural History: The complaint follows a prior lawsuit (Pictiva I) where a jury found that older Samsung QD-OLED products infringed the same patent, resulting in a $98.8 million damages award. The complaint also notes that Defendant Samsung Display Co., Ltd. unsuccessfully challenged the patent's validity through an Inter Partes Review (IPR) petition, which was denied institution, and two Ex Parte Reexamination requests, one of which resulted in confirmation of all challenged claims and the other was denied.

Case Timeline

Date Event
2007-09-19 '547 Patent Priority Date
2012-11-20 '547 Patent Issue Date
2016-09-21 Alleged first date of SDC's knowledge of the '547 Patent
2023-10 Pictiva I lawsuit filed against SEC and SEA
2024-05-07 SDC filed Petition for Inter Partes Review (IPR) of the '547 Patent
2024-11-19 PTAB denied institution of SDC's IPR
2025-04-21 SDC filed Petition for Ex Parte Reexamination of the '547 Patent
2025-10 Jury in Pictiva I found '547 Patent valid and infringed
2026-02-19 USPTO issued reexamination certificate for '547 Patent, confirming all claims
2026-05-15 Central Reexamination Unit denied SDC's second reexamination request
2026-05-26 Complaint Filing Date

II. Technology and Patent(s)-in-Suit Analysis

U.S. Patent No. 8,314,547 - "Opto-Electronic Component" (Issued Nov. 20, 2012)

The Invention Explained

  • Problem Addressed: The patent seeks to address the "undesired color impression in a switched-off state" that can occur in certain types of light-emitting devices that use wavelength conversion layers, such as early phosphor-converted OLEDs, which could have a visible, often yellowish, tint when inactive ʼ547 Patent, col. 2:17-20
  • The Patented Solution: The invention proposes an opto-electronic device, such as an OLED display, that uses a single-color light source (e.g., blue) and a separate "structured layer" to generate a full-color image ʼ547 Patent, abstract This structured layer is placed in the beam path of the light source and is composed of laterally arranged "first and second regions" ʼ547 Patent, col. 14:56-65 ʼ547 Patent, Fig. 1A The "first regions" contain a wavelength conversion material (e.g., quantum dots) that converts the blue light into other colors, like red or green ʼ547 Patent, col. 14:61-65 The "second regions" do not convert the light but instead contain a "filter layer" that is transparent to the original blue light while being opaque to the converted red and green light, effectively creating the blue subpixel ʼ547 Patent, col. 15:1-12
  • Technical Importance: This architecture provides a method for creating a full-color display from a monochromatic OLED panel, which can offer advantages in manufacturing efficiency and color performance, forming a foundational design for what is now commercially known as QD-OLED technology Compl. ¶20

Key Claims at a Glance

  • The complaint asserts infringement of at least Claim 1 of the '547 Patent Compl. ¶41
  • The essential elements of independent Claim 1 are:
    • An optoelectronic device comprising an organic layer sequence that emits radiation of a first wavelength spectrum.
    • A structured layer downstream of the organic layer, including first and second regions arranged laterally.
    • The first regions include a wavelength conversion layer to convert the first spectrum to a second spectrum.
    • The second regions include a filter layer that is at least partially opaque to a third spectrum corresponding to the second spectrum.
    • The filter layer is transparent to the first wavelength spectrum.

III. The Accused Instrumentality

Product Identification

The complaint identifies two categories of accused products:

  1. "New SEC/SEA Accused Products": "Next generation" QD-OLED televisions and monitors sold by Samsung Electronics Co. and Samsung Electronics America that were released after the infringement contentions in the prior Pictiva I litigation Compl. ¶27
  2. "SDC Customer Accused Products": Products from other manufacturers, such as Dell, MSI, and Sony, that are alleged to incorporate infringing QD-OLED display panels supplied by Samsung Display Co. Compl. ¶28

Functionality and Market Context

The accused products are televisions and monitors that utilize QD-OLED display technology Compl. ¶¶27-28 The complaint alleges these displays function by using an OLED panel to generate blue light, which then passes through a structured layer containing quantum dots Compl. ¶¶43-44 This layer allegedly converts the blue light into red and green light in specific subpixel regions, while allowing blue light to pass through other regions to form the final image Compl. ¶44 The "QD-OLED structure diagram" included in the complaint depicts this arrangement of a blue light source, a QD light emitting layer, and glass substrates Compl. p. 15

IV. Analysis of Infringement Allegations

'547 Patent Infringement Allegations

Claim Element (from Independent Claim 1) Alleged Infringing Functionality Complaint Citation Patent Citation
an organic layer sequence which emits an electromagnetic radiation having a first wavelength spectrum during operation The accused products contain an OLED panel with a "blue light emitting source" that emits blue light. ¶43; ¶44 col. 9:35-45
a structured layer disposed downstream of the organic layer sequence in a beam path... and including first and second regions A "quantum dot conversion layer" or "QD light emitting layer" is disposed downstream of the blue light source and contains different regions for subpixels. ¶43; p. 15 col. 10:13-16
wherein the first regions each include a wavelength conversion layer configured to convert at least partially electromagnetic radiation having a first wavelength spectrum into an electromagnetic radiation having a second wavelength spectrum The "first regions" are alleged to be the green and red subpixel regions, which use a "quantum dot conversion layer" to convert blue light into green or red light. ¶43; ¶44 col. 10:17-27
wherein the second regions each include a filter layer which is at least partially opaque to an electromagnetic radiation having a third wavelength spectrum which corresponds to at least one part of the second wavelength spectrum The "second regions" are alleged to be the blue subpixel regions, which include a filter layer that is opaque to red and green light. ¶43; ¶44 col. 10:34-42
wherein the first and second regions of the structured layer are arranged laterally in a beam path of the optoelectronic device The red, green, and blue subpixel regions are arranged side-by-side. The complaint explicitly states they are "arranged laterally." ¶43; p. 15 col. 2:15-19
wherein the filter layer is transparent to the electromagnetic radiation having the first wavelength spectrum The filter layer in the blue subpixel region is transparent to the blue light emitted from the source. ¶44 col. 15:10-12
  • Identified Points of Contention:
    • Scope Questions: A potential point of dispute may concern the term "filter layer". The defense could question whether the blue subpixel region in the accused products contains a structure that meets the patent's definition of a "filter layer," or if it is merely an aperture that allows blue light to pass through without an added filtering element. The complaint itself notes the filter region is "not shown" in its diagram, suggesting this may be an area for discovery and argument Compl. ¶44
    • Technical Questions: The infringement theory depends on mapping the physical layers of a commercial QD-OLED panel to the claimed elements. A key question will be evidentiary: what is the precise physical and optical characterization of the accused "second regions" (blue subpixels)? The analysis will likely focus on whether these regions possess a distinct layer or material property that functions to block red and green light, as required by the claim, versus merely lacking the quantum dots present in the red and green subpixels.

V. Key Claim Terms for Construction

  • The Term: "filter layer"

  • Context and Importance: The existence and definition of the "filter layer" in the "second regions" (the blue subpixels) is central to the infringement allegation. Defendants may argue that their blue subpixels do not contain a distinct "layer" for "filtering" but simply allow the source's blue light to pass through an opening in the quantum dot conversion material.

  • Intrinsic Evidence for Interpretation:

    • Evidence for a Broader Interpretation: The claim requires the layer to be "at least partially opaque" to the converted light, which could support an argument that any component that provides some blocking function, even if not a discrete, separately deposited film, meets the definition ʼ547 Patent, col. 15:2-5
    • Evidence for a Narrower Interpretation: The specification discusses embodiments where the "filter layer" is a "molecular filter" or a layer that converts light into heat or non-visible wavelengths, suggesting it is an active, engineered component rather than a simple void ʼ547 Patent, col. 4:46-65 The consistent depiction of the filter as a distinct structural element (4) in the patent's figures (e.g., Fig. 1A) may also support a narrower construction requiring a discrete layer.

  • The Term: "arranged laterally"

  • Context and Importance: This term governs the spatial relationship of the color-converting regions and the filter regions. Practitioners may focus on this term because, while seemingly straightforward, the microscopic reality of display manufacturing could involve gradients or slight overlaps between subpixels that a defendant might argue falls outside a strict "lateral" arrangement.

  • Intrinsic Evidence for Interpretation:

    • Evidence for a Broader Interpretation: The specification states that the regions are "arranged laterally or alongside one another" and "not arranged in a manner stacked one above another," which suggests the primary intent is to distinguish this architecture from vertically stacked color-generation structures ʼ547 Patent, col. 2:15-19
    • Evidence for a Narrower Interpretation: The patent figures, particularly the abstract patterns in Figure 3, show distinct regions with clear boundaries ʼ547 Patent, Fig. 3 A defendant could argue this implies that "arranged laterally" requires clean separation between the "first" and "second" regions, without any intermingling of materials at their interface.

VI. Other Allegations

  • Indirect Infringement: The complaint alleges that SDC induces infringement by its customers (e.g., Dell, MSI, Sony) by supplying the infringing QD-OLED panels Compl. ¶35 The alleged acts of inducement include advertising the infringing features, providing technical assistance and literature, and giving instructions to its customers, with the knowledge and intent that these actions will cause infringement Compl. ¶¶35-36
  • Willful Infringement: The complaint makes a detailed case for willfulness. It alleges Defendants had knowledge of the '547 Patent no later than September 2016 from an Information Disclosure Statement Compl. ¶23 and knowledge of infringement no later than October 2023 from the filing of the Pictiva I lawsuit Compl. ¶47 The complaint further cites the prior jury verdict of infringement, the denial of SDC's IPR petition, and the confirmation of the patent's claims in reexamination as evidence that Defendants' continued infringement is deliberate and willful Compl. ¶¶30-33 Compl. ¶47

VII. Analyst's Conclusion: Key Questions for the Case

Given the extensive and largely unsuccessful litigation history by Defendants against the '547 patent, this case appears to be a follow-on action targeting new products. The key questions are likely to be:

  • A core issue will be one of technical distinction: are the "New SEC/SEA Accused Products" and "SDC Customer Accused Products" materially different in their technical operation from the products previously found to infringe in Pictiva I? Specifically, does the construction of the blue subpixel in these newer devices introduce a non-infringing alternative to the claimed "filter layer"?
  • A second critical question will be one of willfulness and damages: assuming infringement is found, can Defendants plausibly argue that their continued use of the QD-OLED architecture in new products, following a $98.8 million infringement verdict and multiple failed validity challenges at the USPTO, was based on a good-faith belief of non-infringement or invalidity? The court's determination on this issue will be central to the potential for enhanced damages.
Loading Complaint