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    • 6. 发明授权
    • Backlight unit with controlled power consumption and display apparatus having the same
    • 具有受控功耗的背光单元和具有其的显示装置
    • US08400073B2
    • 2013-03-19
    • US12689968
    • 2010-01-19
    • Sang-Chul ByunByoung Dae YeYong-Hoon KwonByungchoon YangYoung-keun Lee
    • Sang-Chul ByunByoung Dae YeYong-Hoon KwonByungchoon YangYoung-keun Lee
    • H05B37/02
    • H05B33/0818G09G3/3406G09G2320/064G09G2330/021H05B33/0827
    • In a display apparatus having a backlight unit, a light unit includes plural light source strings commonly connected to an output terminal of a boosting circuit to generate light in response to a light source driving voltage. The light source strings are grouped into plural light generating groups. Plural driving circuits are respectively connected to the light generating groups, and each driving circuit sequentially outputs feedback voltages from the light source strings of a corresponding light generating group. A minimum voltage detecting circuit compares the feedback voltages with each other from the driving circuits to detect a minimum voltage and outputs a control signal according to the detected minimum voltage. A voltage control circuit controls a voltage level of the light source driving voltage in response to the control signal. Accordingly, although the number of the driving circuits increases, power consumption used in each driving circuit may be reduced.
    • 在具有背光单元的显示装置中,光单元包括共同连接到升压电路的输出端的多个光源串,以响应于光源驱动电压产生光。 光源串被分组成多个发光组。 多个驱动电路分别连接到发光组,并且每个驱动电路从相应的发光组的光源串中顺序地输出反馈电压。 最小电压检测电路将来自驱动电路的反馈电压相互比较以检测最小电压,并根据检测到的最小电压输出控制信号。 电压控制电路响应于控制信号控制光源驱动电压的电压电平。 因此,尽管驱动电路的数量增加,但是可以减少每个驱动电路中使用的功耗。
    • 10. 发明授权
    • Local-dimming method, light source apparatus performing the local-dimming method and display apparatus having the light source apparatus
    • 局部调光方法,执行局部调光方法的光源装置和具有光源装置的显示装置
    • US08629831B2
    • 2014-01-14
    • US12415359
    • 2009-03-31
    • Sang-Il ParkYong-Hoon KwonSe-Ki ParkGi-Cherl KimSi-Joon Song
    • Sang-Il ParkYong-Hoon KwonSe-Ki ParkGi-Cherl KimSi-Joon Song
    • G09G3/36
    • G09G3/3413G09G3/3648G09G2320/064G09G2360/145
    • A light source module of a display device comprises light-emitting blocks each of which comprises multiple sets of light sources, with different sets emitting different colors (e.g. red, green and blue). Each set is independently controllable according to one or more driving parameters. A local-dimming method comprises: (a) in each color-dimming period, driving each light-emitting block by the first color-dimming process; (b) in each compensating period, driving each light-emitting block by a full-color process which is independent of the image; (c) in each compensating period, sensing emitted light and determining the one or more driving parameters' reference driving values operable to generate a reference color; (d) in at least one of the color-dimming and compensating periods, driving each light-emitting block using the one or more driving parameters' values which depend on the reference driving values; and (e) between a color-dimming period and an adjacent compensating period, gradually switching the light-source module between the first color-dimming process and the full-color process.
    • 显示装置的光源模块包括发光块,每个发光块包括多组光源,具有发射不同颜色(例如,红色,绿色和蓝色)的不同组。 每组可根据一个或多个驱动参数独立控制。 本地调光方法包括:(a)在每个颜色调光期间,通过第一颜色调光过程驱动每个发光块; (b)在每个补偿期间,通过独立于图像的全色处理驱动每个发光块; (c)在每个补偿周期中,感测发射的光并确定可操作以产生参考色的一个或多个驱动参数的参考驱动值; (d)在色调和补偿周期中的至少一个中,使用取决于参考驱动值的一个或多个驱动参数值来驱动每个发光块; 和(e)在颜色调光周期和相邻的补偿周期之间,逐渐地在第一色调处理和全色处理之间切换光源模块。