Backlight module, and display device and driving method thereof

Abstract

The invention provides a backlight module, and a display device and a driving method thereof, relates to the technical field of display, and is used for solving the problem of how to improve the smearproblem of the display device without reducing the service life of the backlight module, or reducing the refresh frequency of the display device. The backlight module comprises a light guide plate, afirst light bar and a second light bar; the first light bar is provided with a plurality of first light sources arranged at intervals along the extension direction of the first light bar; the secondlight bar is provided with at least one second light source arranged along the extension direction of the second light bar, and the second light source is opposite to one of the plurality of first light sources; the light emitting angles of the opposite first light source and the second light source are the same, and orthographic projections of the first light source and the second light source are overlapped on an a light incident surface of the light guide plate, wherein the first light source on the first light bar is independently controlled; the second light source on the second light baris independently controlled; and the opposite first light source and the second light source are synchronously turned on or turned off.

Description

Technical field [0001] The present invention relates to the field of display technology, in particular to a backlight module, a display device and a driving method thereof. Background technique [0002] With the development of display technology, LCD screens have become a hot spot in the display field due to their extremely high resolution, wide color gamut, and ultra-thin size. However, LCD screens also need to be improved, for example, The dynamic picture smear problem caused by the liquid crystal response speed is not fast enough. [0003] In order to solve the problem of dynamic picture smear of liquid crystal display devices, the prior art has introduced black insertion technology, such as figure 1 As shown, in one frame, in the backlight off stage, the display panel completes screen scanning and liquid crystal inversion; in the backlight on stage, the backlight module is turned on until the next frame starts. In this way, the backlight module does not work when the display p...

AI Technical Summary

Problems solved by technology

[0004] However, in the display device in the prior art, due to the application of the black insertion technology, the turn-on time of the backlight module is greatly shortened, and in order to ensure that the backlight module provides sufficient brightness, the instantaneous brightness of the light source needs to be increased very high. The service life of the backlight module is reduced; or the opening time of the backlight module needs to be extended, resulting in the failure to increase the screen refresh rate

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