# US 9,519,091 B2 · Display device including a conductive pattern

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- Number: US 9,519,091 B2
- Document ID: US9519091B2
- Status: Granted
- Kind: B2
- Application number: 13/880,614
- Filed: 2011-10-21
- Published: 2013-08-15
- Granted: 2016-12-13
- Earliest claimed: 2010-10-22
- Assignees: LG Chem, Ltd.
- Applicants: Hyeon Choi; Sujin Kim; Ki-Hwan Kim; Young Jun Hong
- Inventors: Hyeon Choi; Sujin Kim; Ki-Hwan Kim; Young Jun Hong
- Web page: https://patentgrep.com/patent/US9519091B2

## CPC

- G02B 5/3033: {in the form of a thin sheet or foil, e.g. Polaroid}
- G02B 7/008: {with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation}
- G02F 1/133382: {Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell}
- G02F 1/133602: {Direct backlight}
- H05K 1/0212: {Printed circuits or mounted components having integral heating means}
- G02F 1/133553: {Reflecting elements (associated to illuminating devices G02F1/133605)}
- G02F 1/133615: {Edge-illuminating devices, i.e. illuminating from the side}
- G02F 1/1343: Electrodes {(reflective electrodes G02F1/133553)}
- G02F 2201/122: having a particular pattern
- G02F 2203/60: Temperature independent
- H04N 13/302: for viewing without the aid of special glasses, i.e. using autostereoscopic displays
- H04N 2213/001: Constructional or mechanical details
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## 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.

## Claims

### Claim 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.

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 1)

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.

### Claim 4 (depends on 3)

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.

### Claim 5 (depends on 1)

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.

### Claim 6 (depends on 1)

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

### Claim 7 (depends on 6)

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.

### Claim 8 (depends on 1)

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.

### Claim 9 (depends on 1)

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.

### Claim 10 (depends on 1)

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.

### Claim 11 (depends on 1)

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

### Claim 12 (depends on 1)

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

### Claim 13 (depends on 1)

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

### Claim 14 (depends on 1)

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 m2.

### Claim 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.