Display device including a conductive pattern

Patent metadata

Field	Value
Publication number	US-9519091-B2
Application number	US-201113880614-A
Country	US
Kind code	B2
Filing date	Oct 21, 2011
Priority date	Oct 22, 2010
Publication date	Dec 13, 2016
Grant date	Dec 13, 2016

Abstract

The present invention provides a display device comprising a display panel and a conductive pattern, in which the conductive pattern comprises an irregular pattern.

First claim

The invention claimed is:

1. A display device, comprising:
a display panel, and
a conductive pattern,
wherein the conductive pattern comprises an irregular pattern,
wherein the conductive pattern consists of copper, aluminum, silver, Mo, Ni, Cr, or Ti,
wherein the irregular pattern comprises a pattern that is formed of closed figures in which distribution is continuous and a ratio of standard deviation with respect to an average value of areas of the closed figures (area distribution ratio) is 2% or more, or a pattern in which, when a straight line that intersects the conductive pattern is drawn, a ratio of standard deviation with respect to an average value of distances between adjacent intersection points of the straight line and the conductive pattern (distance distribution ratio) is 2% or more,
wherein the display device comprises at least one of a heating element in which the conductive pattern is provided on at least one surface of a transparent substrate; a phase difference compensation film in which the conductive pattern is provided on at least one surface thereof; and a light guide plate in which the conductive pattern is provided on at least one surface thereof; and
wherein the display device additionally comprises a backlight unit provided on a rear surface side of the display panel, and the conductive pattern is directly formed on a front surface or rear surface of the backlight unit.

2. The display device of claim 1 , wherein the display panel further comprises a bus bar, and the conductive pattern comprises a conductive heating pattern which is electrically connected to the bus bar.

3. The display device of claim 1 , wherein the display panel further comprises a bus bar, and the conductive pattern comprises a conductive heating pattern which is electrically connected to the bus bar and a conductive non-heating pattern which is not electrically connected to the bus bar.

4. The display device of claim 3 , wherein the display device further comprises an edge-type backlight unit,
the conductive non-heating pattern is formed such that a density is higher in a region closer to a light source of the edge-type backlight unit than a density in a region farther from the light source of the edge-type backlight unit, and
the conductive heating pattern is formed such that the density is higher in a region farther from the light source of the edge-type backlight unit than the density in a region closer to the light source of the edge-type backlight unit.

5. The display device of claim 1 , wherein the irregular pattern comprises at least one of a conductive pattern of a boundary form of figures forming a Voronoi diagram and a conductive pattern of a boundary form of figures formed of at least one triangle forming a Delaunay pattern.

6. The display device of claim 1 , wherein the display device comprises an edge-type backlight unit.

7. The display device of claim 6 , wherein the conductive pattern is configured to compensate for a deviation in temperature by the edge-type backlight unit.

8. The display device of claim 1 , wherein the conductive pattern is disposed such that when the display device is driven, a standard deviation of a surface temperature of a display panel is 20% or less.

9. The display device of claim 1 , wherein the conductive pattern is disposed such that a deviation in an opening ratio is 5% or less with respect to any circumcircle having a diameter of 20 cm.

10. The display device of claim 1 , wherein the display device comprises two substrates and a liquid crystal cell comprising a liquid crystal material sealed between the substrates, and the conductive pattern is provided on at least one side of at least one substrate of the liquid crystal cell.

11. The display device of claim 1 , wherein the heating element is provided on a front surface or a rear surface of the display panel.

12. The display device of claim 1 , wherein power consumed by the conductive pattern is 100 W or less.

13. The display device of claim 1 , wherein the conductive pattern uses a voltage of 20 V or less.

14. The display device of claim 1 , wherein when the conductive pattern is connected to a power source, an amount of heat generated is 400 W or less per m 2 .

15. A display device, comprising:
a display panel, and
a conductive pattern,
wherein the conductive pattern comprises an irregular pattern,
wherein the conductive pattern consists of copper, aluminum, silver, Mo, Ni, Cr or Ti,
wherein the display device comprises a polarizing film and a polarizing film protective film provided on at least one surface of the polarizing film, and the conductive pattern is provided on at least one side or both sides of the polarizing film protective film,
wherein the display panel further comprises a bus bar, and the conductive pattern comprises a conductive heating pattern which is electrically connected to the bus bar and a conductive non-heating pattern which is not electrically connected to the bus bar,
wherein the display device further comprises an edge-type backlight unit,
wherein the conductive non-heating pattern is formed such that a density is higher in a region closer to a light source of the edge-type backlight unit than a density in a region farther from the light source of the edge-type backlight unit, and
wherein the conductive heating pattern is formed such that the density is higher in a region farther from the light source of the edge-type backlight unit than the density in a region closer to the light source of the edge-type backlight unit.

Assignees

• Choi Hyeon
• Kim Sujin
• Kim Ki-Hwan
• Hong Young Jun
• Lg Chemical Ltd

Inventors

• Choi Hyeon
• Kim Sujin
• Kim Ki-Hwan
• Hong Young Jun

Classifications

• G02F1/133602

  Direct backlight · CPC title

• H04N2213/001

  Constructional or mechanical details · CPC title

• G02F1/133615

  Edge-illuminating devices, i.e. illuminating from the side · CPC title

• H04N13/302

  for viewing without the aid of special glasses, i.e. using autostereoscopic displays · CPC title

• G02F1/133553

  Reflecting elements (associated to illuminating devices G02F1/133605) · CPC title