# US 2014/0153218 A1 · Display device

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- Number: US 2014/0153218 A1
- Document ID: US20140153218A1
- Status: Published application
- Kind: A1
- Application number: 14/233,861
- Filed: 2012-06-28
- Published: 2014-06-05
- Earliest claimed: 2011-07-18
- Assignees: LG Innotek Co., Ltd.
- Inventors: Soon Young HYUN
- Web page: https://patentgrep.com/patent/US20140153218A1

## CPC

- G02B 6/0085: {Means for removing heat created by the light source from the package}
- G02B 6/0023: {provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source}
- G02F 1/133308: {Support structures for LCD panels, e.g. frames or bezels}
- G02F 1/1336: {Illuminating devices}
- G02F 1/133615: {Edge-illuminating devices, i.e. illuminating from the side}
- G02B 6/0026: {Wavelength selective element, sheet or layer, e.g. filter or grating}
- G02B 6/0073: {Light emitting diode [LED]}
- G02F 1/133314: {Back frames}
- G02F 1/133614: {using photoluminescence, e.g. phosphors illuminated by UV or blue light}
- G02F 1/133617: {Illumination with ultraviolet light; Luminescent elements or materials associated to the cell}
- G02F 1/133628: {with cooling means}
- 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

## Abstract

Disclosed is a display device. The display device includes a light source; a wavelength conversion member converting a wavelength of light output from the light source; a display panel to which the light is incident; a heat transfer part adjacent to the light source and the wavelength conversion member; and a heat dissipation part connected to the heat transfer part.

## Claims

### Claim 1

A display device comprising:
a light source;
a wavelength conversion member converting a wavelength of light output from the light source;
a display panel to which the light is incident;
a heat transfer part adjacent to the light source and the wavelength conversion member; and
a heat dissipation part connected to the heat transfer part.

### Claim 2 (depends on 1)

The display device of claim 1, wherein the heat transfer part is transparent.

### Claim 3 (depends on 1)

The display device of claim 1, wherein the heat transfer part closely adheres to the light source and the wavelength conversion member.

### Claim 4 (depends on 1)

The display device of claim 1, wherein a refractive index of the heat transfer part is in a range of about 1.5 to about 1.6.

### Claim 5 (depends on 1)

The display device of claim 1, wherein the heat transfer part includes silicon resin, epoxy resin, phenolic resin, urethane resin, or urea resin.

### Claim 6 (depends on 1)

The display device of claim 1, further comprising a circuit board connected to the light source,
wherein the heat dissipation part is disposed on the circuit board.

### Claim 7 (depends on 1)

The display device of claim 1, further comprising a circuit board connected to the light source,
wherein the heat dissipation part faces the circuit board while interposing the light source therebetween.

### Claim 8 (depends on 1)

The display device of claim 1, wherein the heat transfer part is interposed between the light source and the wavelength conversion member.

### Claim 9 (depends on 1)

The display device of claim 1, wherein the wavelength conversion member includes an incident surface to which the light is incident and the heat transfer part is disposed on the incident surface.

### Claim 10 (depends on 9)

The display device of claim 9, wherein the light source includes an exit surface through which the light is output, and
the heat transfer part is adhered to the incident surface and the exit surface.

### Claim 11 (depends on 1)

The display device of claim 1, wherein the wavelength convention member has a shape extending in one direction, and
the heat dissipation part extends in a direction equal to the extension direction of the wavelength conversion member.

### Claim 12 (depends on 1)

The display device of claim 1, wherein the heat transfer part represents thermal conductivity in a range of about 1.5×10−4cal/sec·cm·° C. to about 20×10−4cal/sec·cm·° C.

### Claim 13 (depends on 1)

The display device of claim 1, further comprising a heat blocking part interposed between the heat transfer part and the wavelength conversion member.

### Claim 14 (depends on 13)

The display device of claim 13, wherein the heat blocking part closely adheres to the heat transfer part and the wavelength conversion member.

### Claim 15 (depends on 13)

The display device of claim 13, wherein the heat blocking part represents thermal conductivity lower than thermal conductivity of the heat transfer part.

### Claim 16 (depends on 15)

The display device of claim 15, wherein the heat blocking part represents thermal conductivity in a range of about 0.1×10−4cal/sec·cm·° C. to about 1.0×10−4cal/sec·cm·° C., and the heat transfer part represents thermal conductivity in a range of about 1.5×10−4cal/sec·cm·° C. to about 20×10−4cal/sec·cm·° C.

### Claim 17 (depends on 13)

The display device of claim 13, wherein the heat blocking part is transparent.

### Claim 18 (depends on 13)

The display device of claim 13, wherein the heat blocking part includes vinyl chloride resin.