Cutting area pathway for display module
A display module includes a thin film transistor (TFT) substrate including a glass substrate, a TFT layer provided on the glass substrate, and a plurality of TFT electrodes provided on the TFT layer; and a plurality of light-emitting diodes (LEDs) electrically connected to the plurality of TFT electrodes, wherein the TFT layer includes a plurality of sacrificial switching elements connected to the plurality of LEDs in parallel and configured to absorb static electricity generated at the TFT layer.
1 . A display module comprising:
a thin film transistor (TFT) substrate comprising a glass substrate, a TFT layer provided on the glass substrate, and a plurality of TFT electrodes provided on the TFT layer; and
a plurality of light-emitting diodes (LEDs) electrically connected to the plurality of TFT electrodes,
wherein the TFT layer comprises a plurality of sacrificial switching elements connected to the plurality of LEDs in parallel,
wherein a sacrificial switching element of the plurality of sacrificial switching elements comprises a first wiring electrically connected to an anode of a corresponding pixel circuit, and a second wiring electrically connected to a cathode of the corresponding pixel circuit, the first wiring and the second wiring being positioned in a cutting area,
wherein the cutting area comprises a pathway extending from a rear surface of the TFT substrate to the first wiring and the second wiring,
wherein the cutting area has a transparency such that a laser beam passes through the cutting area,
wherein the TFT layer further comprises a first metal layer extending over both the first wiring and the second wiring, and
wherein a distance between the sacrificial switching element and a TFT electrode of the plurality of TFT electrodes corresponding to the sacrificial switching element is shorter than a distance between the corresponding pixel circuit and a TFT electrode of the plurality of TFT electrodes which controls an LED of the plurality of LEDs corresponding to the sacrificial switching element.
2 . The display module of claim 1 , wherein the first metal layer is provided between a front surface of the TFT layer and the sacrificial switching element.
3 . The display module of claim 1 , wherein the cutting area comprises a pathway extending from a front surface of the TFT substrate to the first wiring and the second wiring.
4 . The display module of claim 3 , wherein the cutting area has a transparency such that the laser beam passes through the cutting area, and
wherein the glass substrate further comprises a second metal layer provided at a position which corresponds to the cutting area.
5 . The display module of claim 4 , wherein the second metal layer is provided at a rear surface of the glass substrate.
6 . The display module of claim 1 , wherein a pair of TFT electrodes to which the LED of the plurality of LEDs corresponding to the sacrificial switching element is connected is provided between the sacrificial switching element and the corresponding pixel circuit.
7 . The display module of claim 6 , further comprising a protection film comprising an insulating material,
wherein a first portion of the pair of TFT electrodes adjacent to the LED corresponding to the sacrificial switching element is not covered by the protection film, and a second portion of the pair of TFT electrodes adjacent to the sacrificial switching element is covered by the protection film.
8 . The display module of claim 7 , wherein the second portion of the pair of TFT electrodes is an area at which an LED for repair is provided.
9 . The display module of claim 1 , wherein the plurality of sacrificial switching elements is provided in the TFT layer.
10 . A display module comprising:
a thin film transistor (TFT) substrate comprising a glass substrate, a TFT layer provided on the glass substrate, and a plurality of TFT electrodes provided on the TFT layer; and
a plurality of light-emitting diodes (LEDs) electrically connected to the plurality of TFT electrodes,
wherein the TFT layer comprises a plurality of sacrificial switching elements connected to the plurality of LEDs in parallel,
wherein a sacrificial switching element of the plurality of sacrificial switching elements comprises a first wiring electrically connected to an anode of a corresponding pixel circuit, and a second wiring electrically connected to a cathode of the corresponding pixel circuit, and
wherein a distance between the sacrificial switching element and a TFT electrode of the plurality of TFT electrodes corresponding to the sacrificial switching element is shorter than a distance between the corresponding pixel circuit and a TFT electrode of the plurality of TFT electrodes which controls an LED of the plurality of LEDs corresponding to the sacrificial switching element.