CN105244006B - The backlight adjusting method and its display device of a kind of display device - Google Patents

Abstract

The present invention relates to electronic technology field, there is provided a kind of backlight adjusting method of display device, including：Current environment brightness is detected by the light sensor of display device, obtains photosensitive brightness value；The current environment brightness value detected according to the imaging sensor of photosensitive brightness value, and display device, adjust the backlight illumination of display device.Present invention also offers a kind of display device, it is controlled as stated above, the accurate judgement to ambient light can be achieved in the present invention, and Consumer's Experience is good.

Description

Method for adjusting backlight of display device and display device thereof

technical field

The invention relates to the field of electronic technology, in particular to a method for adjusting a backlight of a display device and a display device thereof.

Background technique

Current mobile terminal devices such as mobile phones generally have the function of automatically adjusting the brightness of the screen backlight, which is usually realized by using a photosensitive sensor. The photosensitive sensor adjusts the screen brightness by sensing the current ambient light brightness. When the ambient light is strong, the screen brightness is increased, and when the ambient light is weak, the screen brightness is decreased.

In the course of realizing the present invention, the inventor finds that there are following problems in the prior art:

Affected by factors such as the opening structure, glass transmittance, and differences in the light spectrum, the photosensitive sensor cannot truly reflect the light perceived by the human eye in a dark environment.

Contents of the invention

In order to overcome the problems in the prior art that the photosensitive sensor is affected by factors such as the opening structure, glass transmittance, and light wave spectrum difference, and cannot truly reflect the light perceived by the human eye in a dark environment, and the collected data has a large error, the present invention Embodiments provide a method for adjusting a backlight of a display device on the one hand, including:

Detecting the current ambient brightness through the photosensitive sensor of the display device to obtain a photosensitive brightness value;

Adjust the backlight brightness of the display device according to the photosensitive brightness value and the current ambient brightness value detected by the image sensor of the display device.

On the other hand, an embodiment of the present invention also provides a display device, including a photosensitive sensor and an image sensor, and the display device further includes:

The processing module is connected to the photosensitive sensor and the image sensor respectively, and is used to adjust the display according to the photosensitive brightness value of the current environment detected by the photosensitive sensor and the current ambient brightness value detected by the image sensor. The brightness of the device's backlight.

Because the photosensitive sensor is affected by factors such as the opening structure, glass transmittance, and light wave spectrum differences, it cannot truly reflect the human eye's perception of light in low-light environments, and the current ambient brightness value acquired by the image sensor is sensitive in low-light environments. It is stable and can accurately capture subtle changes in the current ambient light. Therefore, the embodiment of the present invention adjusts the backlight brightness of the display device according to the photosensitive brightness value and the current ambient brightness value detected by the image sensor of the display device. In this way, combined with the photosensitive brightness value The brightness value of the current environment detected by the image sensor can better reflect the real brightness value of the current environment, and the correspondingly adjusted backlight brightness is more suitable for human eyes, which improves the user experience.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

FIG. 1 is a schematic flowchart of a first embodiment of a method for adjusting a backlight of a display device according to the present invention;

2 is a schematic flowchart of a second embodiment of a method for adjusting a backlight of a display device according to the present invention;

Fig. 3 is the schematic flow chart of the embodiment of step S24 of the present invention;

4 is a schematic flowchart of a third embodiment of a method for adjusting a backlight of a display device according to the present invention;

5 is a schematic flowchart of a fourth embodiment of a method for adjusting a backlight of a display device according to the present invention;

FIG. 6 is a schematic structural diagram of the first embodiment of the display device of the present invention;

7 is a schematic structural diagram of a second embodiment of the display device of the present invention;

FIG. 8 is a schematic structural diagram of a fourth embodiment of the display device of the present invention.

detailed description

In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Please refer to FIG. 1 , which is a schematic flowchart of a first embodiment of a method for adjusting a backlight of a display device according to the present invention. The backlight adjustment method includes:

In step S11, the current ambient brightness is detected by the photosensitive sensor of the display device to obtain a photosensitive brightness value. The photosensitive sensor may be turned on by default in the background of the display device, or automatically turned on after detecting that the backlight of the display device is turned on, or turned on by a user-defined operation.

Step S12, adjusting the backlight brightness of the display device according to the photosensitive brightness value and the current ambient brightness value detected by the image sensor of the display device.

, camera sensor isp (camera sensor image signal processor) can provide a parameter value about the current ambient brightness (that is, the current ambient brightness value): camera luma (camera brightness). The camera luma value is mainly used to calculate the shutter time in the camera (camera) module. Here we can use the current camera luma value as the current ambient brightness value detected by the image sensor. The camera luma value is sensitive and stable in low-light environments, and can accurately capture subtle changes in the current ambient light, with rapid feedback and high reliability. The camera luma value can assist the photosensitive sensor to make a correct judgment on the brightness of the current ambient light .

In this embodiment, the image sensor is preferably a front image sensor on a display device. Taking a mobile phone as an example, the image sensor may be an image sensor of a front camera of the mobile phone. Generally, the front image sensor and the user's eyes are in the same brightness environment. Therefore, the current ambient brightness value collected by the front image sensor can more accurately obtain the ambient light brightness perceived by the user's eyes. According to the front The ambient brightness value obtained by the image sensor is used to adjust the brightness of the backlight, which can bring a better user experience.

Because the photosensitive sensor is affected by factors such as the opening structure, glass transmittance, and light wave spectrum differences, it cannot truly reflect the light perceived by the human eye in a low-light environment, while the camera luma value of the image sensor is sensitive and stable in a low-light environment. Accurately capture the subtle changes in the current ambient light. Therefore, the embodiment of the present invention adjusts the backlight brightness of the display device according to the photosensitive brightness value and the current ambient brightness value detected by the image sensor of the display device. In this way, the combination of the photosensitive brightness value and the image sensor The detected brightness value of the current environment can better reflect the real brightness value of the current environment, and the correspondingly adjusted brightness of the backlight is more suitable for viewing by human eyes, which improves the user experience.

Please refer to FIG. 2 , which is a schematic flowchart of a second embodiment of a method for adjusting a backlight of a display device according to the present invention. The backlight adjustment method includes:

In step S21, the current ambient brightness is detected by the photosensitive sensor of the display device to obtain a photosensitive brightness value. The photosensitive sensor may be turned on by default in the background of the display device, or automatically turned on after detecting that the backlight of the display device is turned on, or turned on by a user-defined operation.

In step S22, it is determined that the photosensitive brightness value is within the preset photosensitive brightness range, and the photosensitive sensor detects the change of the current ambient brightness to obtain the photosensitive brightness change value.

The preset photosensitive brightness range is specifically the brightness range corresponding to the weak light environment, and the specific range value may be [1,20) lux. The so-called photosensitive luminance change value is the difference between the photosensitive luminance value currently acquired by the photosensor and the photosensitive luminance value acquired in the previous cycle (this cycle can be predefined according to the situation). After the photosensitive brightness value periodically detected by the photosensitive sensor falls within the preset photosensitive brightness range only once or consecutively for several times, it can be determined that the photosensitive brightness value is within the preset photosensitive brightness range. In this step, after the photosensitive luminance value periodically detected by the preferred photosensitive sensor falls into the preset photosensitive luminance range for several consecutive times (such as 8 times), then it is determined that the photosensitive luminance value is located in the preset photosensitive luminance range, thereby avoiding due to photosensitive jitter This results in frequent switching on and off of the image sensor.

Step S23, comparing the light-sensitive brightness change value with the first threshold, if the light-sensitive brightness change value is greater than the first threshold, execute step S24, and if less than the first threshold, execute step S25.

In this step, if the photosensitive brightness change value is greater than 10lux, it is determined that the current ambient brightness of the display device has changed, and the camera luma value as the current ambient brightness value is obtained through the camera sensor isp, and the backlight is adjusted based on the current ambient brightness value. Adjust the brightness to make the current backlight brightness more suitable for the current user's environment.

In step S24, the image sensor detects the current ambient brightness to obtain the current ambient brightness value, and adjusts the backlight brightness according to the current ambient brightness value.

In this step, after the current ambient brightness value is successfully acquired by the image sensor, the backlight brightness can be adjusted only according to the current ambient brightness value, or the backlight brightness can be adjusted according to the current ambient brightness value and the current photosensitive brightness value. Preferably, as shown in FIG. 3, step S24 specifically includes:

S241, start the camera.

S242, judging whether the camera luma value has been acquired continuously for N times within the first preset time, if yes, execute step S243, if not, execute step S247. Wherein, the first preset time may be 3 seconds, and the N times may be 8 times.

S243. Adjust the brightness of the backlight according to the current ambient brightness value, delay the second preset time and start the camera again, and execute step S244. Wherein, the second preset time may be 20 seconds.

S244, judging whether the camera luma value has been acquired continuously N times within the second preset time, if yes, execute step S245, if not, execute step S246.

S245. Adjust the brightness of the backlight with reference to the light-sensitive brightness value and the camera luma values acquired twice before and after the second preset time, and execute S246.

S246, close the camera.

S247, start the camera again after delaying the second preset time, and judge whether the camera luma value has been acquired N times in a row within the first preset time, if yes, execute step S243, if not, execute step S246. When the enough camera luma value cannot be obtained twice in a row, the camera is turned off to prevent the camera from always being in an infinite loop of luma value detection, and at the same time, it can effectively save system resources.

Wherein, the acquisition of the camera luma value in step S243 includes: obtaining 8 camera luma values after starting the camera auxiliary judgment, and taking the largest 4 to calculate the average luma value.

Step S25, keeping the current brightness of the backlight unchanged.

In this embodiment, the ongoing camera auxiliary judgment can be stopped immediately if the automatic backlight is not needed (the so-called opening of the camera auxiliary judgment is to turn on the camera sensor isp and obtain the camera luma value as the ambient brightness value). The situations that do not require automatic backlight include the following: the mobile phone automatically turns off the automatic backlight when it is running; the screen status enters a dark screen, or the screen is off (manually or overtime); the status of the proximity sensor is switched to approach; the battery life of the mobile phone Switch to the super power-saving mode. At the same time, the camera auxiliary judgment will not be activated in the super power-saving mode; enter the call state, and the camera auxiliary judgment will not be activated in the calling, incoming, and answering states; the above state occurs when the auxiliary judgment is in progress. When it is necessary to stop the auxiliary judgment immediately. In any of the above cases, the camera auxiliary judgment is not enabled.

Since the image sensor is turned on for a long time, it will quickly consume the power of the display device, especially the mobile phone. Therefore, in the embodiment of the present invention, the photosensitive brightness value is periodically obtained by the photosensitive sensor. When the photosensitive brightness value is within the preset photosensitive brightness range, and the photosensitive brightness When the change value is greater than the first threshold, the image sensor is turned on to obtain the current ambient brightness value, and after the image sensor successfully obtains the current ambient brightness value, the image sensor is turned off, so as to save power and avoid frequently turning on the image sensor.

Please refer to FIG. 4 , which is a schematic flowchart of a third embodiment of a method for adjusting a backlight of a display device according to the present invention. The backlight adjustment method includes:

In step S31, the current ambient brightness is detected by the photosensitive sensor of the display device to obtain a photosensitive brightness value. The photosensitive sensor may be turned on by default in the background of the display device, or automatically turned on after detecting that the backlight of the display device is turned on, or turned on by a user-defined operation.

Step S32, if the photosensitive brightness value enters the preset photosensitive brightness range from outside the preset photosensitive brightness range, turn on the image sensor to detect the current ambient brightness, obtain the current ambient brightness value, and Adjust the brightness of the backlight. Wherein, the preset photosensitive brightness range is specifically the brightness range corresponding to the weak light environment, and the specific range value may be [1,17) lux. In this step, "turn on the image sensor to detect the current ambient brightness, obtain the current ambient brightness value, and adjust the backlight brightness according to the current ambient brightness value" is the same as step S24 described in detail above, so it will not be repeated here.

After confirming that the photosensitive brightness value is within the preset photosensitive brightness range (i.e. under low-light environment), redefine the preset photosensitive brightness range to [1,20)lux, which can effectively prevent the The display device switches repeatedly under different light environments, burdening the system.

Further, when confirming that the display device is currently in a low-light environment, turn on the camera sensor isp and obtain the camera luma value as the ambient brightness value, and detect the change of the current ambient brightness through the photosensitive sensor to obtain the photosensitive brightness change value. If the photosensitive brightness change value is greater than the first threshold, the current ambient brightness is detected by the image sensor to obtain the current ambient brightness value, and the backlight brightness is adjusted according to the current ambient brightness value; if the photosensitive brightness change value is smaller than the first threshold value, the current backlight brightness is kept unchanged.

Further, if the photosensitive sensor detects that the photosensitive brightness value does not fall within the range of [1,20) lux at any one time, it is judged that the current environment has exited the low-light environment, and the preset photosensitive brightness range value [1,20) is restored. 17) lux.

In the embodiment of the present invention, through the real-time detection of the photosensitive luminance value, the first time after confirming that the photosensitive luminance value enters the preset photosensitive luminance range, the camera is started to assist judgment and adjust the backlight brightness, so as to provide users with fast and accurate use. experience.

Please refer to FIG. 5 , which is a schematic flowchart of a fourth embodiment of a method for adjusting a backlight of a display device according to the present invention. The backlight adjustment method includes:

In step S41, the current ambient brightness is detected by the photosensitive sensor of the display device to obtain a photosensitive brightness value.

The photosensitive sensor may be turned on by default in the background of the display device, or automatically turned on after detecting that the backlight of the display device is turned on, or turned on by a user-defined operation.

Step S42, determining that the photosensitive brightness value is greater than the upper limit value of the preset photosensitive brightness range, then adjusting the backlight brightness of the display device based on the photosensitive brightness value;

In this embodiment, when the photosensitive brightness value is greater than the upper limit of the preset photosensitive brightness range, in order to simplify the judgment process and save system resources, the camera luma is turned off to assist judgment, and the backlight brightness is controlled by the photosensitive sensor.

In step S43, it is determined that the photosensitive brightness value is less than the lower limit value of the preset photosensitive brightness range, then the current ambient brightness value is detected by the image sensor, and if the current ambient brightness value is smaller than the second threshold value, the preset Set the minimum backlight brightness as the current backlight brightness.

When the photosensitive luminance value is not greater than the upper limit of the preset photosensitive luminance range, it is further judged whether the photosensitive luminance value is smaller than the lower limit of the preset photosensitive luminance range. In this embodiment, the The lower limit value tends to 0lux. When the photosensitive sensor detects that the current photosensitive brightness value is 0lux, the current ambient brightness value is detected by the image sensor to determine whether the current ambient brightness value is less than the second threshold value. In this embodiment, the The second threshold value is the luminance value corresponding to the use environment being a completely black environment, and if so, it is judged that the use environment of the current display device is a completely black environment, and the minimum backlight brightness is used as the current backlight brightness. Similarly, in order to further avoid photosensitive jitter, after judging that the current use environment of the display device is a completely dark environment, the lower limit value of the photosensitive brightness range is redefined as 2lux.

The embodiment of the present invention detects the photosensitive luminance value in real time, and provides a corresponding solution when the photosensitive luminance value is outside the preset photosensitive luminance range, which can effectively save display device energy and system resources.

The embodiments of the method for adjusting the backlight of a display device according to the present invention are described in detail above. The device (ie, display device) corresponding to the above method will be further elaborated below. Wherein, the display device may be a mobile phone, a tablet computer, MP3, MP4, or a notebook computer.

Please refer to FIG. 6 , which is a schematic structural diagram of the first embodiment of the display device of the present invention.

The display device 100 includes: a photosensitive sensor 110 , an image sensor 120 and a processing module 130 .

Wherein, the processing module 130 is connected to the photosensitive sensor 110 and the image sensor 120 respectively, and is used to adjust the brightness of the display device 110 according to the photosensitive brightness value of the current environment detected by the photosensitive sensor 110 and the current ambient brightness value detected by the image sensor 120. Backlight brightness.

In this embodiment, the image sensor 120 can be a camera sensor isp (camera sensor image signal processor), and the camera sensor isp can provide a parameter value about the current ambient brightness (ie, the current ambient brightness value): camera luma (camera luma brightness). The camera luma value is mainly used to calculate the shutter time in the camera (camera) module. Here we can use the current camera luma value as the current ambient brightness value detected by the image sensor. The camera luma value is sensitive and stable in low-light environments, and can accurately capture subtle changes in the current ambient light, with rapid feedback and high reliability. The camera luma value can assist the photosensitive sensor to make a correct judgment on the brightness of the current ambient light .

In this embodiment, the image sensor 120 is preferably a front image sensor on the display device 100. Taking a mobile phone as an example, the image sensor 120 may be an image sensor of a front camera of the mobile phone. Generally, the front image sensor and the user's eyes are in the same brightness environment. Therefore, the current ambient brightness value collected by the front image sensor can more accurately obtain the ambient light brightness perceived by the user's eyes. According to the front The ambient brightness value obtained by the image sensor is used to adjust the brightness of the backlight, which can bring a better user experience.

Because the photosensitive sensor is affected by factors such as the opening structure, glass transmittance, and light spectrum differences, it cannot truly reflect the human eye's perception of light in low-light environments, and the camera luma value of the image sensor 120 is sensitive and stable in low-light environments. It is possible to accurately capture subtle changes in the current ambient light. Therefore, the embodiment of the present invention adjusts the backlight brightness of the display device according to the photosensitive brightness value and the current ambient brightness value detected by the image sensor 120 of the display device 100. In this way, combined with the photosensitive brightness value The brightness value of the current environment detected by the image sensor can better reflect the real brightness value of the current environment, and the correspondingly adjusted backlight brightness is more suitable for human eyes, which improves the user experience.

Please refer to FIG. 7 , which is a schematic structural diagram of a second embodiment of the display device of the present invention.

Different from the above first embodiment of the display device, the processing module 130 includes:

The photosensitive brightness change value acquisition unit 131 is used to determine that the photosensitive brightness value detected by the photosensitive sensor is within the preset photosensitive brightness range, and obtain the photosensitive brightness change value by detecting the change of the current ambient brightness through the photosensitive sensor;

The preset photosensitive brightness range is specifically the brightness range corresponding to the weak light environment, and the specific range value may be [1,20) lux. The so-called photosensitive luminance change value is the difference between the photosensitive luminance value currently acquired by the photosensor and the photosensitive luminance value acquired in the previous cycle (this cycle can be predefined according to the situation). After the photosensitive brightness value periodically detected by the photosensitive sensor falls within the preset photosensitive brightness range only once or consecutively for several times, it can be determined that the photosensitive brightness value is within the preset photosensitive brightness range. In this step, after the photosensitive luminance value periodically detected by the preferred photosensitive sensor falls into the preset photosensitive luminance range for several consecutive times (such as 8 times), then it is determined that the photosensitive luminance value is located in the preset photosensitive luminance range, thereby avoiding due to photosensitive jitter This results in frequent switching on and off of the image sensor.

The first adjustment unit 132 is configured to detect the current ambient brightness through the image sensor if the photosensitive brightness change value acquired by the photosensitive brightness change value acquisition unit is greater than the first threshold, and obtain the current ambient brightness value, according to the current The ambient brightness value adjusts the brightness of the backlight; if the photosensitive brightness change value is smaller than the first threshold, the current brightness of the backlight remains unchanged.

In this embodiment, if the photosensitive brightness change value is greater than 10lux, it is determined that the current ambient brightness of the display device has changed, and the camera luma value as the current ambient brightness value is obtained through the camera sensor isp, and based on the current ambient brightness value. Adjust the brightness of the backlight to make the current brightness of the backlight more suitable for the current user's use environment.

In this embodiment, after the current ambient brightness value is successfully acquired by the image sensor, the backlight brightness can be adjusted only according to the current ambient brightness value, or the backlight brightness can be adjusted according to the current ambient brightness value and the current photosensitive brightness value.

In this embodiment, the ongoing camera auxiliary judgment can be stopped immediately if the automatic backlight is not needed (the so-called opening of the camera auxiliary judgment is to turn on the camera sensor isp and obtain the camera luma value as the ambient brightness value). The situations that do not require automatic backlight include the following: the mobile phone automatically turns off the automatic backlight when it is running; the screen status enters a dark screen, or the screen is off (manually or overtime); the status of the proximity sensor is switched to approach; the battery life of the mobile phone Switch to the super power-saving mode. At the same time, the camera auxiliary judgment will not be activated in the super power-saving mode; enter the call state, and the camera auxiliary judgment will not be activated in the calling, incoming, and answering states; the above state occurs when the auxiliary judgment is in progress. When it is necessary to stop the auxiliary judgment immediately. In any of the above cases, the camera auxiliary judgment is not enabled.

Since the image sensor is turned on for a long time, it will quickly consume the power of the display device, especially the mobile phone. Therefore, in the embodiment of the present invention, the photosensitive brightness value is periodically obtained by the photosensitive sensor. When the photosensitive brightness value is within the preset photosensitive brightness range, and the photosensitive brightness When the change value is greater than the first threshold, the image sensor is turned on to obtain the current ambient brightness value, and after the image sensor successfully obtains the current ambient brightness value, the image sensor is turned off, so as to save power and avoid frequently turning on the image sensor.

As a third embodiment of the display device of the present invention, different from the second embodiment of the above-mentioned display device, the processing module is further configured to: outside the preset photosensitive brightness range, turn on the image sensor to detect the current ambient brightness, obtain the current ambient brightness value, and adjust the backlight brightness according to the current ambient brightness value.

Wherein, the preset photosensitive brightness range is specifically the brightness range corresponding to the weak light environment, and the specific range value may be [1,17) lux. In this step, "turn on the image sensor to detect the current ambient brightness, obtain the current ambient brightness value, and adjust the backlight brightness according to the current ambient brightness value" is the same as step S24 described in detail above, so it will not be repeated here.

After confirming that the photosensitive brightness value is within the preset photosensitive brightness range (i.e. under low-light environment), redefine the preset photosensitive brightness range to [1,20)lux, which can effectively prevent the The display device switches repeatedly under different light environments, burdening the system.

Further, when confirming that the display device is currently in a low-light environment, turn on the camera sensor isp and obtain the camera luma value as the ambient brightness value, and detect the change of the current ambient brightness through the photosensitive sensor to obtain the photosensitive brightness change value. If the photosensitive brightness change value is greater than the first threshold, the current ambient brightness is detected by the image sensor to obtain the current ambient brightness value, and the backlight brightness is adjusted according to the current ambient brightness value; if the photosensitive brightness change value is smaller than the first threshold value, the current backlight brightness is kept unchanged.

Further, if the photosensitive sensor detects that the photosensitive brightness value does not fall within the range of [1,20) lux at any one time, it is judged that the current environment has exited the low-light environment, and the preset photosensitive brightness range value [1,20) is restored. 17) lux.

Through the real-time detection of the photosensitive luminance value, when the photosensitive luminance value is confirmed to be within the preset photosensitive luminance range, the camera is activated to assist in judgment and adjust the backlight brightness, giving users a fast and accurate experience.

Please refer to FIG. 8 , which is a schematic structural diagram of a fourth embodiment of the display device of the present invention.

Different from the above-mentioned first embodiment of the display device, the processing module 110 further includes:

The second adjustment unit 133 is configured to determine that the photosensitive brightness value detected by the photosensitive sensor 120 is greater than the upper limit value of the preset photosensitive brightness range, and adjust the backlight brightness of the display device based on the photosensitive brightness value;

In this embodiment, when the photosensitive luminance value is greater than the upper limit of the preset photosensitive luminance range, in order to simplify the judgment process and save system resources, the camera luma auxiliary judgment is turned off, and the backlight brightness is controlled only by the photosensitive sensor.

The third adjustment unit 134 is configured to determine that the photosensitive brightness value is less than the lower limit value of the preset photosensitive brightness range, then detect the current ambient brightness value through the image sensor 120, if the current ambient brightness value is smaller than the first two thresholds, the preset minimum backlight brightness is taken as the current backlight brightness.

When the photosensitive brightness value is not greater than the upper limit of the preset photosensitive brightness range, it is further judged whether the photosensitive brightness value is smaller than the lower limit value of the preset photosensitive brightness range, and if so, the current environment is detected by the image sensor Brightness value, to judge whether the brightness value of the current environment is less than the second threshold value, in this embodiment, the second threshold value is the brightness value corresponding to the low-light or dark environment of the use environment, if so, then judge the brightness value of the current display device The use environment is a low-light or completely dark environment, and the minimum backlight brightness is used as the current backlight brightness, which can effectively save the energy of the display device.

By detecting the photosensitive luminance value in real time, when the photosensitive luminance value is outside the preset photosensitive luminance range, a corresponding solution is provided, which can effectively save display device energy and system resources.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the programs can be stored in a computer-readable storage medium. During execution, it may include the processes of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM) and the like.

When ordinal numerals such as "first" and "second" are mentioned in the embodiments of the present invention, unless they really express the meaning of order according to the context, it should be understood that they are only used for distinction.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (8)

1. A method for adjusting a backlight of a display device, comprising: Detecting the current ambient brightness through the photosensitive sensor of the display device to obtain a photosensitive brightness value; adjusting the backlight brightness of the display device according to the photosensitive brightness value and the current ambient brightness value detected by the image sensor of the display device; The adjusting the backlight brightness of the display device according to the photosensitive brightness value and the current ambient brightness value detected by the image sensor of the display device includes: When it is determined that the photosensitive brightness value is within the preset photosensitive brightness range, the photosensitive sensor detects the change of the current ambient brightness to obtain the photosensitive brightness change value; If the photosensitive brightness change value is greater than the first threshold, the image sensor detects the current ambient brightness to obtain the current ambient brightness value, and adjusts the backlight brightness according to the current ambient brightness value; If the photosensitive brightness change value is smaller than the first threshold, keep the current backlight brightness unchanged. 2. The backlight adjustment method according to claim 1, wherein the backlight brightness of the display device is adjusted according to the light-sensitive brightness value and the current ambient brightness value detected by the image sensor of the display device, Also includes: If the photosensitive brightness value enters the preset photosensitive brightness range from outside the preset photosensitive brightness range, turn on the image sensor to detect the current ambient brightness, obtain the current ambient brightness value, and adjust according to the current ambient brightness value Backlight brightness. 3. The method for adjusting the backlight of claim 1, wherein the brightness of the backlight of the display device is adjusted according to the light-sensitive brightness value and the current ambient brightness value detected by the image sensor of the display device. ,Also includes: When it is determined that the photosensitive brightness value is greater than the upper limit value of the preset photosensitive brightness range, adjusting the backlight brightness of the display device based on the photosensitive brightness value; If it is determined that the photosensitive brightness value is less than the lower limit value of the preset photosensitive brightness range, the current ambient brightness value is detected by the image sensor, and if the current ambient brightness value is smaller than the second threshold value, the preset minimum The backlight brightness is used as the current backlight brightness. 4. The backlight adjustment method according to any one of claims 1-3, wherein the image sensor is a front image sensor on the display device. 5. A display device, comprising a photosensitive sensor and an image sensor, characterized in that it also includes: The processing module is connected to the photosensitive sensor and the image sensor respectively, and is used to adjust the display according to the photosensitive brightness value of the current environment detected by the photosensitive sensor and the current ambient brightness value detected by the image sensor. The brightness of the backlight of the device; The processing modules include: A photosensitive luminance change value acquisition unit, configured to determine that the photosensitive luminance value detected by the photosensitive sensor is within a preset photosensitive luminance range, and obtain a photosensitive luminance change value by detecting changes in current ambient brightness through the photosensitive sensor; The first adjustment unit is configured to detect the current ambient brightness through the image sensor if the photosensitive brightness change value acquired by the photosensitive brightness change value acquisition unit is greater than the first threshold, and obtain the current ambient brightness value, according to the current environment. The brightness value adjusts the brightness of the backlight; if the light-sensitive brightness change value is smaller than the first threshold, the current brightness of the backlight remains unchanged. 6. The display device according to claim 5, wherein the processing module is further configured to: if the photosensitive brightness value detected by the photosensitive sensor enters the preset photosensitive brightness range from outside the preset photosensitive brightness range Inside, turn on the image sensor to detect the current ambient brightness, obtain the current ambient brightness value, and adjust the backlight brightness according to the current ambient brightness value. 7. The display device according to claim 5, wherein the processing module comprises: The second adjustment unit is configured to determine that the photosensitive brightness value detected by the photosensitive sensor is greater than the upper limit value of the preset photosensitive brightness range, and adjust the backlight brightness of the display device based on the photosensitive brightness value; A third adjustment unit, configured to determine that the photosensitive brightness value is less than the lower limit value of the preset photosensitive brightness range, then detect the current ambient brightness value through the image sensor, if the current ambient brightness value is smaller than the second threshold value , then use the preset minimum backlight brightness as the current backlight brightness. 8. The display device according to any one of claims 5-7, wherein the image sensor is a front image sensor on the display device.