Display device, display control method, and non-transitory computer-readable recording medium

Patent metadata

Field	Value
Publication number	US-11610522-B2
Application number	US-202217690512-A
Country	US
Kind code	B2
Filing date	Mar 9, 2022
Priority date	Mar 10, 2021
Publication date	Mar 21, 2023
Grant date	Mar 21, 2023

Abstract

A display device includes a display panel; a temperature information acquisition unit that acquires peripheral temperature information on a periphery of the display panel; and a control unit that controls drive current to be supplied to the display panel. The control unit controls the drive current to be supplied to the display panel to a first drive current value when a peripheral temperature indicated by the peripheral temperature information is within a prescribed temperature range, and a second drive current value lower than the first drive current value when the peripheral temperature indicated by the peripheral temperature information is higher than the prescribed temperature range.

First claim

What is claimed is:

1. A display device comprising:
a display panel;
a temperature information acquisition unit that acquires peripheral temperature information on a periphery of the display panel; and
a control unit that controls drive current to be supplied to the display panel
at a first drive current value when a peripheral temperature indicated by the peripheral temperature information is within a prescribed temperature range, and
at a second drive current value lower than the first drive current value when the peripheral temperature indicated by the peripheral temperature information is higher than the prescribed temperature range,

wherein the control unit controls the drive current by using a weight coefficient that corresponds to the peripheral temperature information acquired by the temperature information acquisition unit and that is smaller than 1.

2. The display device according to claim 1 ,
wherein the temperature information acquisition unit includes a temperature sensor disposed inside or outside the display panel.

3. The display device according to claim 1 ,
wherein the display panel includes an organic electroluminescent (EL) element.

4. The display device according to claim 1 ,
wherein the control unit further calculates a corrected value by multiplying a value of the drive current before correction by the weight coefficient and supplies the drive current having the calculated corrected value to the display panel.

5. The display device according to claim 4 ,
wherein, when the peripheral temperature is a prescribed temperature or higher, the control unit calculates the corrected value and supplies the drive current having the calculated corrected value to the display panel.

6. The display device according to claim 2 , further comprising:
a main board that performs signal processing on video,
wherein the temperature sensor is installed at a position corresponding to the main board.

7. The display device according to claim 1 , further comprising:
a power supply board;
a source driver; and
a controller board,
wherein the temperature information acquisition unit includes one temperature sensor or a plurality of temperature sensors, and
wherein the one temperature sensor or the plurality of temperature sensors are installed at a position or positions corresponding to at least one of the power supply board, the source driver, and the controller board.

8. The display device according to claim 1 ,
wherein the temperature information acquisition unit includes at least one temperature sensor, and
wherein the at least one temperature sensor is installed at a portion corresponding to the display panel.

9. The display device according to claim 8 ,
wherein, when a plurality of temperature sensors are disposed in a region defined by a target picture displayed by the display panel, the drive current in the region is controlled by using a weight coefficient corresponding to a highest peripheral temperature among peripheral temperatures indicated by the plurality of temperature sensors.

10. A display device comprising:
a display panel;
a temperature information acquisition unit that acquires peripheral temperature information on a periphery of the display panel; and
a control unit that controls drive current to be supplied to the display panel at a first drive current value when a peripheral temperature indicated by the peripheral temperature information is within a prescribed temperature range, and at a second drive current value lower than the first drive current value when the peripheral temperature indicated by the peripheral temperature information is higher than the prescribed temperature range,
wherein the control unit further controls the drive current by using a weight coefficient corresponding to an average picture level value of the display panel.

11. The display device according to claim 10 ,
wherein, as the average picture level value is larger, a weight coefficient closer to 1 is used.

12. A display control method of a display device, the display device including
a display panel,
a temperature information acquisition unit that acquires peripheral temperature information on a periphery of the display panel, and
a control unit that controls drive current to be supplied to the display panel, the method comprising:
acquiring the peripheral temperature information by the temperature information acquisition unit; and
controlling, by the control unit, the drive current by using a weight coefficient corresponding to the peripheral temperature information acquired by the temperature information acquisition unit,
wherein the control unit controls the drive current by using a weight coefficient that corresponds to the peripheral temperature information acquired by the temperature information acquisition unit and that is smaller than 1.

13. A non-transitory computer-readable recording medium storing a display control program, which when executed by at least one processor of a computer, causes the computer to function as the display device according to claim 1 , the display control program further causing, when executed by the at least one processor, the computer to function as the control unit.

Assignees

• Sharp Kk

Inventors

• Masuda Yusuke
• Kamada Kentaroh

Classifications

• G09G3/006 Primary

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