A color temperature adjusting method, system and display device

Abstract

The application discloses a color temperature adjusting method, a system and a display device. The color temperature adjusting method acquires a current working temperature of a display screen and an actual color point of the display screen at the working temperature in real time. When the current working temperature is inconsistent with a target working temperature, and the actual color point is inconsistent with a target color point corresponding to the target working temperature, the current quality parameter of the display screen is adjusted, so that the actual color point is consistent with the target color point, and the color temperature of the whole machine picture of the display screen is ensured to be not changed due to the change of the temperature, and then the picture display effect of the display device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a color temperature adjusting method, system and display device. BACKGROUND

[0002] With the continuous development of current LCD TV product technology, high quality and high color gamut are the most important subjective requirements of liquid crystal televisions, and the continuous improvement of picture quality is also the development trend of liquid crystal televisions. By introducing QD quantum dots, compared with other liquid crystal television backlight schemes, higher color gamut can be achieved, color purity is improved, and the visual effect of the picture is more obviously improved.

[0003] However, in the QD quantum dot backlight scheme, the light source is usually a blue light LED light source, which is converted into a white light source through a QD quantum dot film and a QD quantum dot diffusion plate; with different temperatures of the blue light LED light source, the temperature of the environment where the QD film is located changes, the light emitting efficiency of the blue light LED and the conversion efficiency of the QD will be different, which will cause a certain color deviation of the picture of the whole machine.

[0004] Therefore, the prior art still needs to be improved and improved. SUMMARY

[0005] The purpose of the present application is to provide a color temperature adjusting method, system and display device, which can effectively solve the problem of color deviation of the picture of the display device caused by the change of the temperature of the light source.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0007] The color temperature adjusting method provided by the present application is applied to a display device, and the display device includes a display screen. The color temperature adjusting method includes the following steps:

[0008] Real-time acquisition of the current working temperature of the display screen and the actual color point of the display screen at the working temperature;

[0009] When the current working temperature is inconsistent with the target working temperature, and the actual color point is inconsistent with the target color point corresponding to the target working temperature, the current picture quality parameter of the display screen is adjusted so that the actual color point is consistent with the target color point.

[0010] In some embodiments of the color temperature adjusting method, the step of adjusting the current picture quality parameter of the display screen includes:

[0011] Acquisition of the current picture quality parameter and the target picture quality parameter of the display screen;

[0012] When the current picture quality parameter is inconsistent with the target picture quality parameter, the current picture quality parameter is adjusted to the target picture quality parameter.

[0013] In some embodiments of the color temperature adjustment method, the step of obtaining the target image quality parameters includes:

[0014] Based on the preset mapping relationship between operating temperature and image quality parameters, the target image quality parameters corresponding to the current operating temperature in the mapping relationship are obtained; wherein, the mapping relationship is the correspondence between operating temperature and image quality parameters when the display screen's color point is the target color point under different operating temperatures.

[0015] In some embodiments of the color temperature adjustment method, the image quality parameters include the gamma data of the display screen, and the step of adjusting the current image quality parameters to the target image quality parameters includes:

[0016] Adjust the current gamma data on the display to the target gamma data.

[0017] In some embodiments of the color temperature adjustment method, the display screen includes a blue LED light source, and the current operating temperature of the display screen is the current temperature of the blue LED light source.

[0018] This application also provides a color temperature adjustment system, including:

[0019] Display module;

[0020] The temperature acquisition module is connected to the display module and is used to detect the current operating temperature of the display module.

[0021] The color point acquisition module, connected to the display module, is used to acquire the actual color point of the display module at the current operating temperature;

[0022] The adjustment module is connected to the temperature acquisition module, color point acquisition module, and display module respectively. It is used to adjust the current image quality parameters of the display screen so that the actual color point is consistent with the target color point when the current operating temperature is inconsistent with the target operating temperature and the actual color point is inconsistent with the target color point corresponding to the target operating temperature.

[0023] In some embodiments of the color temperature adjustment system, the adjustment module is specifically used to obtain the current image quality parameters and the target image quality parameters of the display screen, and when the current image quality parameters are inconsistent with the target image quality parameters, the current image quality parameters are adjusted to the target image quality parameters.

[0024] In some embodiments of the color temperature adjustment system, the adjustment module is further configured to obtain the target image quality parameter corresponding to the current working temperature in the mapping relationship according to the preset mapping relationship between working temperature and image quality parameters; wherein, the mapping relationship is the correspondence between working temperature and image quality parameters when the display screen's color point is the target color point under different working temperatures.

[0025] In some embodiments of the color temperature adjustment system, the image quality parameters include the gamma data of the display screen.

[0026] The embodiment of the present application further provides a display device, comprising:

[0027] a display screen;

[0028] a temperature sensor arranged in the display screen and used for detecting a current working temperature of the display screen;

[0029] a core plate connected with the display screen and the temperature sensor and used for executing the color temperature adjusting method.

[0030] Compared with the prior art, the present application provides a color temperature adjusting method, system and display device, wherein the color temperature adjusting method acquires the current working temperature of the display screen in real time, and acquires the actual color point of the display screen corresponding to the temperature; if the current working temperature is inconsistent with a target working temperature, and the actual color point is inconsistent with a target color point corresponding to the target working temperature, the quality parameter of the display screen is adjusted, so that the actual color point of the display screen is consistent with the target color point, and the color temperature of the whole machine picture of the display screen is ensured not to change due to the change of temperature, thereby improving the picture display effect of the display device. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 A flowchart of the color temperature adjusting method provided by the present application is shown.

[0032] Figure 2 A flowchart of step 200 in the color temperature adjusting method provided by the present application is shown.

[0033] Figure 3 A structure block diagram of the display device provided by the present application is shown.

[0034] Figure 4 A structure block diagram of the color temperature adjusting system provided by the present application is shown. DETAILED DESCRIPTION

[0035] The present application aims to provide a color temperature adjusting method, system and display device, which can effectively solve the problem of color deviation of the picture of the display device due to the change of the temperature of the light source.

[0036] To make the objectives, technical solutions and effects of the present application clearer and more explicit, the present application is further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0037] Please refer to Figure 1 The color temperature adjusting method provided by the present application is applied to a display device, wherein the display device comprises a display screen, and the color temperature adjusting method comprises:

[0038] 100, acquiring a current working temperature of the display screen and an actual color point of the display screen at the working temperature in real time;

[0039] 200, when the current working temperature is inconsistent with the target working temperature, and the actual color point is inconsistent with a target color point corresponding to the target working temperature, adjusting a current quality parameter of the display screen so that the actual color point is consistent with the target color point.

[0040] The color point in the present application is a color coordinate, and the actual color point of the display screen is a color coordinate when the display screen is displayed. One color coordinate corresponds to one color temperature, and the color point is acquired, that is, the color coordinate value is acquired. In the present application, the display screen includes a blue light LED light source, and the current working temperature of the display screen can be equivalent to the current temperature of the blue light LED light source.

[0041] The target working temperature in the present application is the temperature of the environment in which the LED blue light light source is located when the LED blue light does not generate heat. At this time, the temperature of the environment in which the LED blue light light source is located is taken as the working temperature of the LED blue light. The target color point is the color point of the display screen when the LED blue light light source is lit at the target working temperature.

[0042] Under normal circumstances, during the use of the display device, the blue light LED light source will generate heat as time goes by. When the temperature of the blue light LED light source increases, the light emitting efficiency will be affected, and the color point of the display screen will change, that is, the color temperature of the whole machine picture of the display screen will change, resulting in color deviation.

[0043] If it is detected that the current working temperature is inconsistent with the target working temperature, for example, the current working temperature is greater than the target working temperature, it indicates that the LED blue light light source is generating heat at this time, and the temperature of the environment in which the display screen is located increases. At this time, the current working temperature of the LED blue light light source is the current working temperature of the display screen. In order to verify whether the whole machine color point of the display screen is affected by the temperature at this time, the actual color point of the display screen at the current working temperature needs to be acquired. If the actual color point is consistent with the target color point, it indicates that the color point of the display screen is not affected by the heat of the blue light LED light source at this time. If the actual color point is inconsistent with the target color point, it indicates that the color point of the display screen is affected by the heat of the blue light LED light source at this time. Therefore, when the current working temperature is inconsistent with the target working temperature, and the actual color point is inconsistent with the target color point corresponding to the target working temperature, the quality parameter of the display screen is adjusted so that the actual color point is consistent with the target color point, so as to ensure that the color temperature of the whole machine picture of the display screen does not change due to the change of the temperature, and further improve the picture display effect of the display device.

[0044] In some embodiments, referring to Figure 2 , step 200 includes:

[0045] 210, acquiring a current quality parameter of the display screen and a target quality parameter.

[0046] 220、When the current quality parameter is inconsistent with the target quality parameter, the current quality parameter is adjusted to the target quality parameter.

[0047] In the present application, the current working temperature of the display screen is acquired in real time, and the actual color point of the display screen corresponding to the temperature is acquired; if the actual color point is inconsistent with the target color point, the quality parameter of the display screen is adjusted so that the actual color point of the display screen is consistent with the target color point. Specifically, in the process of adjusting the quality parameter of the display screen, the current quality parameter and the target quality parameter of the display screen are acquired. The target quality parameter is pre-stored. After the current quality parameter is acquired, the current quality parameter is compared with the target quality parameter; if the current quality parameter is inconsistent with the target quality parameter, the current quality parameter is adjusted to the target quality parameter to compensate for the color temperature of the display screen, so as to ensure that the whole machine color point of the display screen is the target color point, thereby realizing that the color temperature of the whole machine picture of the display screen does not change due to the change of temperature.

[0048] In some embodiments, the step of acquiring the target quality parameter comprises: acquiring the target quality parameter corresponding to the current working temperature in the mapping relationship according to a preset mapping relationship between the working temperature and the quality parameter; wherein the mapping relationship is the corresponding relationship between the working temperature and the quality parameter when the color point of the display screen is the target color point under different working temperatures of the display screen.

[0049] In the present application, the display screen is tested before the display device is shipped; the temperature of the environment where the display screen is located changes due to the change of the temperature of the light source in the actual work. When testing, the display screen is placed at different temperatures to detect the color point of the whole machine of the display screen under each temperature, and a color point change curve is established according to different temperatures and the color point under each temperature. Then, according to the color point change curve, the quality parameter of the display screen is debugged to make appropriate adjustments for the color point change of different temperatures, so that the color temperature of the whole machine picture of the display screen remains consistent. At the same time, the corresponding debugged quality parameter under different temperatures is saved, so that each different temperature corresponds to a quality parameter, that is, the mapping relationship between the working temperature and the quality parameter of the display screen is established, and the mapping relationship is pre-stored. Therefore, the mapping relationship in the present application is the corresponding relationship between the working temperature and the quality parameter when the color point of the display screen is the target color point under different working temperatures of the display screen.

[0050] Then, when the current working temperature of the display screen and the actual color point corresponding to the temperature are detected in the subsequent use of the display device, if the actual color point is inconsistent with the target color point, the target quality parameter corresponding to the current working temperature in the mapping relationship is directly called. Then, the current quality parameter of the display screen is adjusted to the target quality parameter, so that the whole machine picture of the display screen does not have color deviation problem.

[0051] The quality parameter includes gamma data of the display screen, and the step 220 includes adjusting the current gamma data of the display screen to target gamma data. The quality parameter in the embodiment can be gamma data. In the application, the current working temperature of the display screen is acquired in real time, and the actual color point of the display screen corresponding to the temperature is acquired; when the actual color point is inconsistent with the target color point, the gamma data of the display screen is adjusted so that the actual color point of the display screen is consistent with the target color point. Specifically, in the process of adjusting the gamma data of the display screen, the current gamma data and the target gamma data of the display screen are acquired. The target gamma data is pre-stored. After the current gamma data is acquired, the current gamma data is compared with the target gamma data; when the current gamma data is inconsistent with the target gamma data, the current gamma data is adjusted to the target gamma data to compensate the color temperature of the display screen, so as to ensure that the whole machine color point of the display screen is the target color point, and thus the color temperature of the whole machine picture of the display screen does not change due to the change of temperature.

[0052] Please refer to Figure 3 The application also provides a display device, which includes a display screen, a temperature sensor and a core board, and the core board is connected with the display screen and the temperature sensor respectively; the temperature sensor is arranged in the display screen and is used to detect the current working temperature of the display screen and feed back the working temperature to the core board; the core board executes the color temperature adjusting method as described above, that is, the current working temperature of the display screen is acquired in real time, and the actual color point of the display screen corresponding to the temperature is acquired; when the current working temperature is inconsistent with the target working temperature, and the actual color point is inconsistent with the target color point corresponding to the target working temperature, the quality parameter of the display screen is adjusted so that the actual color point is consistent with the target color point, so as to ensure that the color temperature of the whole machine picture of the display screen does not change due to the change of temperature, and thus the picture display effect of the display device is improved. Since the color temperature adjusting method is described in detail above, no further description is given here.

[0053] Please refer to Figure 4 The application also provides a color temperature adjusting system, which includes a display module, a temperature acquisition module, a color point acquisition module and an adjusting module; the temperature acquisition module is connected with the display module and is used to detect the current working temperature of the display module; the color point acquisition module is connected with the display module and is used to acquire the actual color point of the display module under the current working temperature; the adjusting module is connected with the temperature acquisition module, the color point acquisition module and the display module respectively and is used to adjust the current quality parameter of the display screen when the current working temperature is inconsistent with the target working temperature, and the actual color point is inconsistent with the target color point corresponding to the target working temperature, so that the actual color point is consistent with the target color point, so as to ensure that the color temperature of the whole machine picture of the display screen does not change due to the change of temperature, and thus the picture display effect of the display device is improved.

[0054] In some embodiments, the adjusting module is specifically configured to acquire the current quality parameter and the target quality parameter of the display screen, and when the current quality parameter is inconsistent with the target quality parameter, the current quality parameter is adjusted to the target quality parameter to compensate the color temperature of the display screen, so as to ensure that the whole machine color point of the display screen is the target color point, and thus the color temperature of the whole machine picture of the display screen is prevented from changing due to temperature change.

[0055] In some embodiments, the adjusting module is specifically configured to acquire the target quality parameter corresponding to the current working temperature in the mapping relationship according to a preset mapping relationship between the working temperature and the quality parameter; and the mapping relationship is a corresponding relationship between the working temperature and the quality parameter when the display screen is in different working temperatures and the color point of the display screen is the target color point. When it is detected that the actual color point of the display screen at the current working temperature is inconsistent with the target color point, the target quality parameter corresponding to the current working temperature in the mapping relationship is directly called, and then the current quality parameter of the display screen is adjusted to the target quality parameter, so that the color cast problem of the whole machine picture of the display screen is prevented.

[0056] In summary, the color temperature adjusting method, system and display device provided by the present application, wherein the color temperature adjusting method acquires the current working temperature of the display screen and the actual color point of the display screen at the working temperature in real time; when the current working temperature is inconsistent with the target working temperature, and the actual color point is inconsistent with the target color point corresponding to the target working temperature, the current quality parameter of the display screen is adjusted so that the actual color point is consistent with the target color point, so as to ensure that the color temperature of the whole machine picture of the display screen does not change due to temperature change, and thus the picture display effect of the display device is improved.

[0057] It can be understood that, for those skilled in the art, equivalent replacements or changes can be made according to the technical solutions and the application concept of the present application, and all these changes or replacements shall belong to the protection scope of the claims attached to the present application.

Claims

1. A color temperature adjustment method, applied to a display device, the display device including a display screen, characterized in that, The display screen includes a blue LED light source, and the color temperature adjustment method includes the following steps: The current operating temperature of the display screen and the actual color point of the display screen at the current operating temperature are obtained in real time; the current operating temperature of the display screen is the current temperature of the blue LED light source. When the current operating temperature is inconsistent with the target operating temperature, and the actual color point is equal to the target color point, the color point of the display screen is not affected by the heat generated by the blue LED light source. When the current operating temperature is inconsistent with the target operating temperature, and the actual color point is inconsistent with the target color point corresponding to the target operating temperature, the current image quality parameters and target image quality parameters of the display screen are obtained. When the current image quality parameters are inconsistent with the target image quality parameters, the current image quality parameters are adjusted to the target image quality parameters so that the actual color point is consistent with the target color point; Obtaining the target image quality parameters specifically includes: obtaining the target image quality parameters corresponding to the current operating temperature in the mapping relationship according to the preset mapping relationship between operating temperature and image quality parameters; wherein, the mapping relationship is the correspondence between the operating temperature and the image quality parameters when the display screen is at the target color point under different operating temperatures.

2. The color temperature adjustment method according to claim 1, characterized in that, The image quality parameters include the gamma data of the display screen, and the step of adjusting the current image quality parameters to the target image quality parameters includes: Adjust the current gamma data on the display screen to the target gamma data.

3. A color temperature adjustment system, characterized in that, include: The display module includes a blue LED light source; A temperature acquisition module, connected to the display module, is used to detect the current operating temperature of the display module; the current operating temperature of the display module is the current temperature of the blue LED light source. A color point acquisition module, connected to the display module, is used to acquire the actual color point of the display module at the current operating temperature; An adjustment module, connected to the temperature acquisition module, the color point acquisition module, and the display module, is used to acquire the current image quality parameters and target image quality parameters of the display screen when the current operating temperature is inconsistent with the target operating temperature and the actual color point is inconsistent with the target color point corresponding to the target operating temperature. When the current image quality parameters are inconsistent with the target image quality parameters, the current image quality parameters are adjusted to the target image quality parameters so that the actual color point is consistent with the target color point. Specifically, the adjustment module obtains the target image quality parameters. Specifically, it obtains the target image quality parameters corresponding to the current operating temperature in the mapping relationship based on the preset mapping relationship between operating temperature and image quality parameters. The mapping relationship is the correspondence between the operating temperature and the image quality parameters when the display screen achieves the target color point at different operating temperatures.

4. The color temperature adjustment system according to claim 3, characterized in that, The image quality parameters include the gamma data of the display screen.

5. A display device, characterized in that, include: The display screen includes a blue LED light source; A temperature sensor is installed in the display screen to detect the current operating temperature of the display screen, which is the current temperature of the blue LED light source. The main board, connected to the display screen and the temperature sensor, is used to perform the color temperature adjustment method as described in claim 1 or 2.

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