Electronic device for controlling luminance of display, and operating method and recording medium thereof

Patent metadata

Field	Value
Publication number	US-2026011284-A1
Application number	US-202519255269-A
Country	US
Kind code	A1
Filing date	Jun 30, 2025
Priority date	Jul 3, 2024
Publication date	Jan 8, 2026
Grant date	—

Abstract

An electronic device may include at least one sensor configured to output information associated with a temperature of the electronic device. The electronic device may include a display; at least one processor including a processing circuit; memory configured to store instructions. The instructions may, when executed by the at least one processor individually or collectively, based on a brightness level of the display being set to be a first level based on an ambient light level and based on a temperature of the electronic device determined using the at least one sensor reaching a first temperature, cause the electronic device to identify a temperature change rate within a designated time period and determine an intermediate temperature between the first temperature and a second temperature higher than the first temperature, the first temperature being set to reduce a brightness level of the display to an intermediate brightness level between the first level and a second level less than the first level, based on the identified temperature change rate. Based on the temperature change rate being greater than a threshold temperature change rate, the intermediate temperature may be set to a first value, and based on the temperature change rate being less than the threshold temperature change rate, the intermediate temperature may be set to a second value greater than the first value. The instructions may, when executed by the at least one processor individually or collectively, based on the current temperature of the electronic device reaching the intermediate temperature, cause the electronic device to reduce the brightness level of the display to the intermediate brightness level. The instructions may, when executed by the at least one processor individually or collectively, based on the current temperature reaching the second temperature, cause the electronic device to reduce the brightness level of the display to the second brightness level.

First claim

What is claimed is:

1 . An electronic device comprising:
at least one sensor configured to output information associated with a temperature of the electronic device; a display; at least one processor including processing circuitry; and memory storing instructions, wherein the instructions, when executed by the at least one processor individually or collectively, cause the electronic device to: based on a brightness level of the display being set to a first level based on an ambient light level: based on a temperature of the electronic device identified using the at least one sensor reaching a first temperature, identify a temperature change rate within a specified time interval and determine an intermediate temperature, between the first temperature and a second temperature higher than the first temperature, to reduce brightness level of the display to an intermediate brightness level, between the first level and a second level less than the first level, based on the identified temperature change rate, wherein, based on the temperature change rate being greater than a threshold temperature change rate, the intermediate temperature is set to a first value, and based on the temperature change rate being less than the threshold temperature change rate, the intermediate temperature is set to a second value greater than the first value; based on a current temperature of the electronic device reaching to the intermediate temperature, reduce the brightness level of the display to the intermediate brightness level; and based on the current temperature reaching to the second temperature, reduce the brightness level of the display to the second level.

2 . The electronic device of claim 1 ,
wherein the instructions, when executed by the at least one processor individually or collectively, cause the electronic device to: based on the temperature of the electronic device reaching the first temperature, reduce the brightness level of the display according to a plurality of time periods such that a luminance of the display is controlled to be identical during one or more adjacent time points among the plurality of time periods.

3 . The electronic device of claim 1 ,
wherein the at least one sensor includes at least one thermistor, and wherein the display includes an active-matrix organic light emitting diode (AMOLED) display.

4 . The electronic device of claim 1 ,
wherein the instructions, when executed by the at least one processor individually or collectively, cause the electronic device to: based on an illuminance obtained through a photoresistor of the electronic device configured to measure an amount of light incident on the electronic device, identify whether a condition for operating in a high-brightness mode is satisfied, based on identifying the condition for operating in the high-brightness mode being satisfied, control the brightness level of the display to be the first level, while controlling the brightness level of the display to be the first level, identify a current surface temperature of the display based on the temperature obtained using the at least one sensor, and based on the current surface temperature reaching the first temperature and the temperature change rate being greater than the threshold temperature change rate, determine, to a first value, the intermediate temperature for reducing the brightness level of the display.

5 . The electronic device of claim 1 ,
wherein the instructions, when executed by the at least one processor individually or collectively, cause the electronic device to: based on the current surface temperature reaching the first temperature and the temperature change rate exceeding the threshold temperature change rate, reduce the brightness level of the display to a first intermediate brightness level set for securing visibility of the display in the high brightness mode, based on the current surface temperature reaching a third temperature higher than the first temperature, reduce the brightness level of the display to a second intermediate brightness level lower than the first intermediate brightness level, and based on the current surface temperature reaching the second temperature, reduce the brightness level of the display to the second brightness level.

6 . The electronic device of claim 1 ,
wherein the instructions, when executed by the at least one processor individually or collectively, cause the electronic device to: based on a time period set for identifying the temperature change rate periodically, identify whether the temperature and the temperature change rate satisfy a condition for reducing the brightness level of the display, based on identifying the temperature and the temperature change rate satisfying the condition, reduce the brightness level of the display, and based on identifying the temperature and the temperature change rate not satisfying the condition, maintain the brightness level of the display.

7 . The electronic device of claim 1 ,
wherein the instructions, when executed by the at least one processor individually or collectively, cause the electronic device to: based on controlling the brightness level of the display to the second brightness level, identify whether the temperature decreases less than the second temperature, and based on identifying the temperature decreasing less than the second temperature, increase the brightness level of the display to a brightness level set corresponding to the temperature and the temperature change rate.

8 . The electronic device of claim 1 ,
wherein the instructions, when executed by the at least one processor individually or collectively, cause the electronic device to: based on a sensing value obtained through a grip sensor of the electronic device, identify information associated with a grip event of the electronic device, and determine the intermediate temperature based on the identified temperature change rate and the information associated with the grip event, and wherein based on the temperature change rate being greater than a threshold temperature change rate and the grip event not occurring, the intermediate temperature is set to a third value greater than the first value.

9 . The electronic device of claim 1 ,
wherein the instructions, when executed by the at least one processor individually or collectively, cause the electronic device to: identify information associated with an application currently being executed, and based on the information associated with the application currently being executed and the identified temperature change rate, determine the intermediate temperature, and wherein based on the temperature change rate being greater than a threshold temperature change rate and the application currently being executed being a specified application, the intermediate temperature is set to a third value greater than the first value.

10 . The electronic device of claim 1 ,
wherein the instructions, when executed by the at least one processor individually or collectively, cause the electronic device to: based on an image obtained through a camera of the electronic device, identify whether a shape of a user of the electronic device is recognized in the image, and based on identifying the shape of the user not being recognized in the image, change a setting of a threshold temperature for identifying whether a state of the electronic device is an overheating state such that the threshold temperature to be a temperature higher than the second threshold temperature.

11 . The electronic device of claim 1 ,
wherein the display includes a foldable display including a plurality of areas separated by at least

Assignees

• Samsung Electronics Co Ltd

Inventors

• Goo Ganghyun
• Kim Yongwoon
• Park Sangheon
• Ban Kyungwon
• Jin Suho

Classifications

• G09G2330/045

  Protection against panel overheating · CPC title

• G09G2320/0693

  Calibration of display systems · CPC title

• G09G2320/0653

  Controlling or limiting the speed of brightness adjustment of the illumination source · CPC title

• G09G2310/066

  Waveforms comprising a gently increasing or decreasing portion, e.g. ramp · CPC title

• G09G3/3225

  using an active matrix · CPC title