Backlight module, dimming method thereof and display device

The invention discloses a backlight module, a dimming method thereof and a display device. The backlight module comprises a back plate and a driving chip, light-emitting units arranged in an array are arranged on the back plate; the back plate comprises N areas; each region comprises M sub-regions;...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: WANG JIAN, SHEN LIYU, WANG XIANGCHUN
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention discloses a backlight module, a dimming method thereof and a display device. The backlight module comprises a back plate and a driving chip, light-emitting units arranged in an array are arranged on the back plate; the back plate comprises N areas; each region comprises M sub-regions; each sub-region comprises at least one light-emitting unit; the backboard further comprises N switch tubes. The driving chip comprises at least one first output end; the first ends of the light-emitting units of all the sub-areas of the ith area are electrically connected with the corresponding first output end of the driving chip through the ith switching tube; the driving chip further comprises M second output ends; the second end of the light-emitting unit of the jth sub-area in each area is electrically connected with the jth second output end of the driving chip; 1 < = i < = N; 1 < = j < = M. According to the technical scheme provided by the invention, dimming refinement is further realized, and a driving chip