Press release

Ultra-Precise Additive Printing for Flat Panel Display Manufacturing

Sponsored by Businesswire

The display sector faces some challenges: the progressive complexity
of displays occurring with a reduced feature size, constant
miniaturization, which causes yield issues on advanced manufacturing
lines, expensive, complex, limited & slow yield improvement (repair)
methods, and a need for the mechanical flexibility of new generation
displays or electrical field damage risk – to name some of them. XTPL
plans to support manufacturers in overcoming those issues by providing
an additive, ultra-precise method that allows them to obtain conductive
& non-conductive structures on the individual micron scale (1-8 μm).

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XTPL has developed an advanced additive method for open defect repair (ODR), strongly contributing t ...

XTPL has developed an advanced additive method for open defect repair (ODR), strongly contributing to the increase of the production yield, that responds to manufacturers requirements. (Photo: Business Wire)

We want to empower global electronics manufacturers by implementing
our solution on their production lines. The XTPL vision entails using
the traditional advantages of print – such as scalability, lower cost,
simplicity and speed – in the production of advanced, high tech devices.
Our technology responds to the market need of progressing
miniaturization and at the same time provides a cost-effective &
scalable method. We believe that as easily and inexpensively as you
print books and newspapers today, soon you’ll be able to print display,
semiconductor or smart glass elements. The highest precision, one that
will allow for this process to materialize, is what XTPL brings to the
.” – explains Filip Granek, CEO of XTPL

Unparalleled versatility

The XTPL disruptive solution works on most substrates, conductive and
non-conductive, as well as flat and 2.5D, such as glass, silicon wafers,
kapton, PEN, PC, PDMS, PET. It can provide straight lines, as well as
patterns and microdots. This XTPL method allows the printing of a large
variety of available materials: conductive inks, nanoparticle based
suspensions, semiconductor based suspensions, insulating inks, resists,
solvent based inks and biological materials. In order to achieve
outstanding results, the company creates its own nanoink formulas based
mostly on metallic nanoparticles (Ag, Au and Cu) and semiconductors (TiO2).
There is no electric field required for printing, which fully
eliminates the risk of damage to the substrate and other electrically
active components. Parameters & features of individual structures
created with this method, as well as the distance between them, depend
on the specific application requirements.

XTPL solutions for nanoprinting may be applied in many sectors, mostly
within printed electronics, e.g. in semiconductors, smart glass,
advanced PCBs, anticounterfeiting or biosensors sector. The company’s
key focus at the moment is the flat panel display market, where
this technology provider has already verified serious competitive

Value for manufacturers

The feature size of printed structures is one of the key parameters when
comparing additive technologies. The XTPL solution can provide
structures on the individual micron scale (1-8 μm)
, which enables a
higher pixel density of the finished products. In particular the
resolution, brightness and lifetime parameters of the final display are

Another challenge faced by the modern FPD manufacturing lies in the fact
that ultra-fine conductive structures are prone to damage. This is a
major factor contributing to the decrease of the production yield. The
XTPL advanced additive method for open defect repair (ODR)
responds to manufacturers requirements in this respect. It requires no
electric field for printing, thus fully eliminating the risk of damage
to the substrate and other electrically active components
(non-electrostatic alternative to the EHD technology). Furthermore, it
allows for the repair of broken conductive lines already at the
production stage, which contributes to reduced takt time. The XTPL
method is effective and enables the high spatial density of printed
features, high adhesion to the substrate (various options possible), and
all with a lower production cost for the manufacturers and no toxic
substances used in the repair process.

Currently a strong trend for producers who aim to meet customers’
expectations is the introduction of flexible displays. Due to the high
production costs and low yield of flexible electronics, its introduction
on a mass scale proves to be a challenge. The XTPL solution enables the mechanical
flexibility of new generation displays
because electrically
conductive structures obtained using this method retain their properties
– including excellent electrical conductivity parameters – throughout
the deformation of the substrate.

It is also worth mentioning that due to the highest transparency of XTPL
structures and above mentioned excellent electrical conductivity
parameters, as well as mechanical flexibility, this solution can
potentially be applied as an alternative also in transparent metal
mesh manufacturing

XTPL technology can be potentially used in the future in OLED
manufacturing to precisely deposit organic materials. Unlike the
currently used fine metal mask (FMM) approach, structures obtained with
our printing method do not exhibit a shadowing effect with the
increase of display size
. This advance allows for a reduced feature
size, irrespective of the scaling. Since the XTPL solution is purely
additive, no organic material is wasted and there is no need for masks
that have to be replaced between the deposition cycles. Currently used
state-of-the-art ink-jet printers for the OLED industry deposit
structures with a minimal diameter of 20 μm, while XTPL technology
provides microdots as small as 1 μm in diameter
. Additionally, the
implemented XTPL ultra-precise deposition (UPD) allows for the
obtainment of arbitrary shapes on any kind of substrate currently used
in OLEDs. The technology is also well suited for Colour Filter (C/F)
during the manufacture or repair stages of the OLED and
LCD panel production process. Universality here allows for the
deposition of a wide range of possible C/F materials, as well as sizes,
and does not require any masking.

Meet XTPL at Display Week

We are open to collaboration with display equipment manufacturers as
well as display manufacturers themselves, to provide for them a high
performance solution dedicated for industrial implementation. Hopefully
we will be able to connect to the main players from this sector at the
upcoming Display Week exhibition 14-16 May in San Jose at XTPL booth
(number 431).
– invites Filip Granek