P‐201: Late‐News‐Poster: Synchronization Technique of Multi‐Chip Cascade Architecture for Automotive TDDI

Abstract

TDDI (Touch and Display Driver Integration) is a device that integrates two functions into one device. One function is as display driver IC and a second function is as a touch screen controller. For scaling to larger screen sizes for automotive applications with a TDDI architecture, multiple TDDI chips are needed due to the fan out of the required signals for supporting the display and integrated touch screen. However, in the case of TDDI multi‐chip architecture, synchronization among the plurality of chips becomes the key factor in order to achieve uniform picture quality and accurate touch response. For this paper we introduce techniques for synchronization for both the display and the touch function among a plurality of chips (TDDIs). In closing we have successfully achieved a cascaded TDDI architecture by this technique for a fully integrated automotive display and touch solution.

A wide-range and fast-locking all-digital DLL with one-cycle dynamic synchronizing for in-cell touched LC display

“…The touch and display driver integration (TDDI) chip utilizes a TDD technique to drive the in-cell liquid crystal (LC) displays, shown in Fig. 1 [10]. The proposed ADDLL is suitable apply to TDDI for clock synchronization.…”

44‐2: In‐cell Touch Panel LCD Driving Method for EMI Mitigation for Automotive Application

“…In the future we expect this demand will only increase as a combination of Autonomous Driving Technology and 5G connectivity that will allow the driver to view other contents such as internet browsing, email, and/or other entertainment content. [1] In-cell type LCDs have a lot of advantages against LCDs with discrete touch panel due to its simple structure, such as thinner modules, lower cost, simpler assembling process, and lower complexity of supply chain. Synaptics has launched numerous chips for in-cell into the market for mobile phone applications.…”