Display apparatus and method for controlling temperature in display apparatus thereof

Patent metadata

Field	Value
Publication number	US-10345628-B2
Application number	US-201514808356-A
Country	US
Kind code	B2
Filing date	Jul 24, 2015
Priority date	Jul 25, 2014
Publication date	Jul 9, 2019
Grant date	Jul 9, 2019

Abstract

A display apparatus and a method for controlling the display apparatus are provided. The display apparatus includes a display panel unit, a reflector disposed on the display panel unit, a radiator, an illumination sensing unit, and a controller. A color of the reflector is changeable according to a temperature thereof, and the reflector is positioned to reflect light incident on the reflector from outside the display apparatus. The heat radiator generates heat to control the temperature of the reflector, and the illumination sensing unit senses an illumination value of light incident on the display apparatus from outside. The controller controls the heat radiator to change the temperature of the reflector according to the illumination value sensed by the illumination sensing unit.

First claim

What is claimed is:

1. A display apparatus, comprising:
a display panel;
a reflector, disposed on the display panel, wherein a color of a first side of the reflector is changeable based on a temperature of the first side of the reflector, and wherein the first side of the reflector is configured to reflect light incident thereon from outside the display apparatus;
a heat radiator disposed on the reflector;
a sensor; and
a controller configured to:
control the sensor to sense an illumination value of the light incident thereon from outside the display apparatus, and
control the heat radiator to generate the heat, based on the illumination value sensed being equal to or higher than a predetermined value, to change the temperature of the first side of the reflector based on the generated heat, and thereby change the color of the first side of the reflector according to the temperature,

wherein the sensor further comprises a plurality of sensors configured to sense the light incident thereon from outside the display apparatus, and
wherein the plurality of sensors are respectively disposed on a plurality of areas of the display apparatus.

2. The display apparatus as claimed in claim 1 , wherein the reflector comprises temperature indicating paint disposed on the first side of the reflector, wherein a color of the temperature indicating paint is changeable according to a temperature of the temperature indicating paint.

3. The display apparatus as claimed in claim 2 , wherein the first side of the reflector faces a direction from which light is incident on the display apparatus from outside the display apparatus.

4. The display apparatus as claimed in claim 2 , wherein, based on the illumination value sensed by the sensor being equal to or higher than the predetermined value, the controller is configured to control the heat radiator to generate the heat, thereby heating the temperature indicating paint and changing the color of the temperature indicating paint.

5. The display apparatus as claimed in claim 1 , wherein the controller is configured to control the heat radiator to generate the heat selectively in only one of the plurality of areas of the display apparatus in which an illumination value is equal to or higher than the predetermined value.

6. The display apparatus as claimed in claim 1 , wherein the controller is configured to control the heat radiator to generate the heat selectively in only one of a plurality of areas of the display apparatus according to an installation height of the display apparatus.

7. The display apparatus as claimed in claim 6 , further comprising:
another sensor configured to measure a distance between the display apparatus and a viewer,
wherein the controller controls the heat radiator to generate heat selectively only in one of a plurality of more of the display apparatus according to the distance between the display apparatus and the viewer and the installation height of the display apparatus.

8. The display apparatus as claimed in claim 1 , wherein the heat radiator comprises includes at least one of transparent indium tin oxide (ITO) and a graphene heater film.

9. A display apparatus comprising:
a display panel;
a reflector disposed on the display panel, the reflector comprising a first side facing a direction from which light is incident on the display apparatus from outside the display apparatus, wherein a reflectivity of the first side of the reflector is changeable according to a temperature of the first side of the reflector;
a heat radiator configured to heat the reflector;
a sensor; and
a controller configured to:
control the sensor to sense an illumination value of the light incident on the display apparatus from outside the display apparatus,
control the heat radiator to generate the heat, based on the illumination value sensed being equal to or higher than a predetermined value, to change the temperature of the first side of the reflector based on the generated heat,

wherein the sensor comprises a plurality of sensors configured to sense the light incident on the display apparatus from outside the display apparatus, and
wherein the plurality of sensors are respectively disposed in each of a plurality of areas of the display apparatus.

10. The display apparatus as claimed in claim 9 , wherein the reflector comprises a temperature indicating paint disposed on the first side of the reflector, wherein a color of the temperature indicating paint is changeable according to the temperature of the temperature indicating paint.

11. The display apparatus as claimed in claim 9 ,
wherein:
the heat radiator is configured to independently heat the reflector in each of the plurality of areas of the display apparatus; and
the controller controls the heat radiator to independently change a temperature of the first side of the reflector in each of the plurality of areas of the display apparatus according to an illumination value obtained by the sensor disposed in each of the plurality of areas.

12. The display apparatus as claimed in claim 9 , wherein:
the heat radiator is configured to independently heat the reflector in each of the plurality of areas of the display apparatus; and
the controller controls the heat radiator to independently change a temperature of the first side of the reflector in each of the plurality of areas of the display apparatus according to the illumination value and an installation height of the display apparatus.

13. The display apparatus as claimed in claim 9 , wherein:
the heat radiator is configured to independently heat the reflector in each of the plurality of areas of the display apparatus; and
the controller controls the heat radiator to independently change a temperature of the first side of the reflector in each of the plurality of areas of the display apparatus according to the illumination value, an installation height of the display apparatus, and a distance between the display apparatus and a viewer.

14. A method of controlling a display apparatus, the method comprising:
sensing an illumination value of light incident on the display apparatus from outside the display apparatus; and
generating heat, based on the illumination value sensed being equal to or higher than a predetermined value, to change a temperature of a reflector, disposed on a display panel of the display apparatus, based on the generated heat,
wherein the reflector is disposed on the display panel and comprises a first side facing a direction from which light is incident on the display apparatus from outside the display apparatus, wherein a reflectivity of the first side of the reflector is changeable according to a temperature of the first side of the reflector,
wherein the display apparatus comprises a plurality of areas and a plurality of sensors configured to sense the light incident on the display apparatus from outside the display apparatus, and
wherein the plurality of sensors are respectively disposed in each of the plurality of areas of the display apparatus.

15. The method as claimed in claim 14 , wherein the changing the temperature of the reflector comprises changing a temperature of a temperature indicating paint disposed on the first side of the reflector, thereby changing a color of the temperature indicating paint.

16. The method as claimed in claim 15 , wherein:
the sensing the illumination value comprises independently sensing an illumination value in each of the plurality of areas of the display apparatus; and
the changing the temperature of the reflector comprises independently changing a temperature of

Assignees

• Samsung Electronics Co Ltd

Inventors

• Cho Yun-Seong
• Lee Sung-Ho
• Song Woong-Jae

Classifications

• G02F2001/133562

  Physics · mapped topic

• G02F1/133526

  Lenses, e.g. microlenses or Fresnel lenses · CPC title

• G02F1/19

  based on variable-reflection or variable-refraction elements not provided for in groups G02F1/015 - G02F1/169 · CPC title

• G02F1/0147 Primary

  based on thermo-optic effects (G02F1/132 takes precedence) · CPC title

• G02F1/133524

  Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides · CPC title