Liquid crystal display device and display control method thereof

Abstract

The invention discloses a liquid crystal display device and a display control method thereof. The liquid crystal display device comprises a television using a liquid crystal display. Two working modes comprising a full-screen mode and an energy-saving mode are provided, wherein in the energy-saving mode, an image is zoomed out and displayed on a sub display area in a liquid crystal panel, and the sub display area is lightened by a second backlight unit; and the full-screen mode is lightened by a first backlight unit. The method realizes the energy-saving mode without affecting the consistency of backlight lamps, and can prolong the service life of the liquid crystal display device at the same time.

Description

technical field [0001] The invention relates to a liquid crystal display device, including a television using a liquid crystal display, and a display control method of the liquid crystal display device. Background technique [0002] At present, LCD TVs are developing beyond the direction of large-size display screens to meet the ever-growing high-definition video programs. Large-size display screens can display high-definition images well and bring immersive effects, but LCDs need to pass The backlight is illuminated to present images, and a large display area means that more backlights are required, which increases power consumption; but many times, such as when playing standard-definition videos and news programs, high-definition images are not required Big screens are a waste of energy. [0003] Aiming at the above phenomenon, in Japanese Patent Documents Unexamined Publication No. 2001-142409 and No. 2006-330222, a solution is proposed in the above-mentioned patent comm...

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Problems solved by technology

[0002] At present, LCD TVs are developing beyond the direction of large-size display screens to meet the ever-growing high-definition video programs. Large-size display screens can display high-definition images well and bring immersive effects, but LCDs need to pass The backlight is illuminated to present images, and a large display area means that more backlights are required, which increases power consumption; but many times, such as when playing standard-definition videos and news programs, high-definition images are not required Big screens waste energy

[0003] Aiming at the above phenomenon, in Japanese Patent Documents Unexamined Publication No. 2001-142409 and No. 2006-330222, a solution is proposed in the above-mentioned patent communiqués, using a part of the area in the liquid crystal screen to display images, that is, a partial display method, instead of The backlight of the display image area is turned off, and the same solution is also proposed in my country's patent announcement number CN101645255A, but after long-term use, it will cause some backlights to age first due to long use time, and the brightness attenuation is large. When displaying images, it is easy to cause image quality degradation due to poor consistency of the backlight; in order to solve this phenomenon of uneven aging of the backlight, a new solution has emerged, see Chinese Patent Announcement No. CN 101286305A, this patent calculates different regions Accumulate the working time, and then adjust the position of the local display area next time, so that the actual use time of the backlight in each area is basically the same, so as to avoid the deterioration of image quality, but changing the position of the image is not used to the user , and the reduced image cannot always be in an optimal position

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