Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras

Single Layer Flexible Display and Method of Manufacturing the Same

Technology Category/Market

Category – Advanced Material and Manufacturing

Applications –Communication systems, Interactive displays, Electrical Appliances, Manufacturing, 

 Automobile, Entertainment,

Industry–Manufacturing, Entertainment, Automobiles

Market The global display market size was valued at $114.9 billion in 2021, and is projected to reach $216.3 billion by 2031, growing at a CAGR of 6.7% from 2022 to 2031.


Problem Statement

  • Existing technologies for display applications such as LCDs, OLEDs electrochromic displays, and QD displays are not cost-effective for a large variety of applications, especially when the switching frequency requirements are low.
  • There is need for cost-effective solutions, involving touch sensors replacing the complex device fabrication and implementation with highly conducting layer for sensing, and transparency so that the display beneath can be visible


The present invention relates to a single layer flexible display device (Fig.1a) and method of manufacturing the   display device

A Single layer flexible display device includes:

  • a substrate
  • a plurality of conducting contacts
  • an active layer

The single layer flexible display device, may have touch functionality incorporated in it.,Fig.1(b).

A touch display device has :

  • a transparent dielectric layer deposited over the active layer and
  • a sensor coupled with the active layer configured to sense capacitance variation
  1. The transparent encapsulation layer encapsulates the plurality of conducting contacts and the active layer
  2. The sensor senses the capacitance of a capacitor formed within the display device, by at least one segment of the plurality of segments, the transparent encapsulation layer, and user’s finger
  3. One segment of the plurality of segments acts as a first capacitor plate, the transparent encapsulation layer act as dielectric, and the user’s finger acts as a second plate of capacitor.

Key Features/Value Proposition

Technical Perspective

  • Display and touch functionalities assigned to the same material layer layer
  • The plurality of segments is electrically coupled to the plurality of conducting contacts to provide desired display pattern (Eg:7–segment displays, matrix displays , complex pattern) on application of electrical signal
  • The touch display device is assigned with display drive and touch sensing functionalities according to time-division multiplexing
Questions about this Technology?

Contact for Licensing

Research Lab

Prof. Parasuraman Swaminathan 

Prof. Debdutta Ray

Department of Metallurgical and Materials Engineering Engineering,

Intellectual Property

  • IDF 2152
  • IITM Ref. IN 435167(Granted)

Technology Readiness Level


Experimental Proof of concept

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