Liquid-crystal display device

Patent metadata

Field	Value
Publication number	US-2016377944-A1
Application number	US-201615189908-A
Country	US
Kind code	A1
Filing date	Jun 22, 2016
Priority date	Jun 25, 2015
Publication date	Dec 29, 2016
Grant date	—

Abstract

Provided is a liquid-crystal display (LCD) device which can include a thin-film transistor (TFT) array substrate, a color filter substrate, and a sealant for attaching the TFT array substrate and the color filter substrate together. The TFT array substrate may include a plurality of conductive lines extended below the sealant, and the conductive lines may have transmissive portions through which UV light irradiated to cure the sealant is allowed to pass.

First claim

What is claimed is:

1 . A thin-film transistor (TFT) array substrate comprising:
an active area where images are displayed, and a peripheral area around the active area; and conductive lines configured to transfer signals associated with image displaying are stacked in multiple layers in the peripheral area, wherein the conductive lines include first and second conductive lines, and wherein the first conductive line in a first layer among the multiple layers has a transmissive area having a shape corresponding to an arrangement of the second conductive line in a second layer below the first layer.

2 . The TFT array substrate of claim 1 , wherein a sealant configured to attach the TFT array substrate to another substrate is located in the peripheral area above the conductive lines.

3 . The TFT array substrate of claim 2 , wherein the sealant is a UV-curable resin configured to be curable by UV light.

4 . The TFT array substrate of claim 3 , wherein the transmissive area is configured to allow UV light irradiated to cure the UV-curable resin to pass through portions of the first conductive line in the first layer.

5 . The TFT array substrate of claim 4 , wherein the transmissive area at least partially includes a portion that does not overlap the second conductive line in the second layer in a stacked direction.

6 . The TFT array substrate of claim 4 , wherein the transmissive area has a slit shape that is extended in parallel with a direction in which the second conductive line in the second layer is extended.

7 . The TFT array substrate of claim 4 , wherein the transmissive area is only at a portion where the first conductive line in the first layer overlaps the sealant in the direction in which the conductive lines are stacked.

8 . The TFT array substrate of claim 4 , wherein an area occupied by the transmissive area is determined based on a trade-off relationship between a transmittance of the UV light and an increase in electrical resistance of the conductive lines.

9 . The TFT array substrate of claim 8 , wherein the transmissive area occupies three-fifth or five-sixth of a unit area of the first conductive line in the first layer.

10 . The TFT array substrate of claim 4 , wherein the second conductive line in the second layer has a transmissive area to allow the UV light to transmit therethrough.

11 . A liquid-crystal display (LCD) device comprising:
a thin-film transistor (TFT) array substrate; a color filter substrate; and a sealant that attaches the TFT array substrate and the color filter substrate together, wherein the TFT array substrate comprises a plurality of conductive lines extended below the sealant, and wherein the conductive lines have transmissive portions through which UV light irradiated to cure the sealant is allowed to pass.

12 . The LCD device of claim 11 , wherein the TFT array substrate comprises a plurality of pads on one side thereof,
wherein the plurality of conductive lines connect the plurality of pads to a display element.

13 . The LCD device of claim 12 , wherein the plurality of conductive lines are configured to transfer control signals associated with displaying images.

14 . The LCD device of claim 11 , wherein the plurality of conductive lines are arranged in multiple layers in a stacked manner, and
wherein a transmissive portion of a conductive line in an upper layer among the plurality of conductive lines arranged in the multiple layers has a slit shape corresponding to a direction in which a conductive line in a lower layer is extended.

15 . The LCD device of claim 14 , wherein the transmissive portion of the conductive line in the upper layer allows UV light incident on the upper layer through the lower layer to be transmitted to the sealant above a predetermined ratio.

16 . The LCD device of claim 15 , wherein the transmissive portion of the conductive line in the upper layer is disposed at a location corresponding to a transmissive portion of the conductive line in the lower layer or an area of the lower layer where no conductive line is disposed.

17 . The LCD device of claim 14 , wherein the conductive line in the lower layer has a transmissive area to allow the UV light to transmit therethrough.

18 . The LCD device of claim 11 , wherein the sealant is a UV-curable resin that is cured by UV light.

19 . The LCD device of claim 11 , wherein an area occupied by the transmissive portions is determined based on a transmittance of the UV light and increase in resistance of the conductive lines.

20 . The LCD device of claim 19 , wherein the transmissive portions occupy three-fifth or five-sixth of a unit area of the conductive line in the first layer.

Assignees

• Lg Display Co Ltd

Inventors

• Park Jeonghwan
• Kim Jongha
• Kang Hongyun

Classifications

• G02F1/1345 Primary

  Conductors connecting electrodes to cell terminals · CPC title

• G02F1/133512

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02F1/1339 Primary

  Gaskets; Spacers; Sealing of cells · CPC title

• G02F2203/01

  transmissive · CPC title

• G02F1/136286 Primary

  Wiring, e.g. gate line, drain line · CPC title