发明名称 |
Liquid crystal display device with brightness adjustment |
摘要 |
An LCD device includes a backlight module, a liquid crystal layer, a brightness detecting module and a control unit. The backlight module includes a light guide plate and light sources. The light guide plate includes a light-mixing part and a light-homogenized part. Protrusions are positioned on the light guide plate. A density of the protrusions in the light-mixing part is greater than that in the light-homogenized part. The liquid crystal layer includes an adjustable part corresponding to the light-mixing part and a nonadjustable part corresponding to the light-homogenized part. The brightness detecting module acquires a brightness distribution data of the liquid crystal layer. The control unit makes a brightness of the adjustable part coincide with a brightness of the nonadjustable part according to the brightness distribution data. |
申请公布号 |
US8899772(B2) |
申请公布日期 |
2014.12.02 |
申请号 |
US201313851914 |
申请日期 |
2013.03.27 |
申请人 |
Hon Hai Precision Industry Co., Ltd. |
发明人 |
Tseng Yung-Chang |
分类号 |
F21V8/00;G02F1/1335 |
主分类号 |
F21V8/00 |
代理机构 |
Novak Druce Connolly Bove + Quigg LLP |
代理人 |
Novak Druce Connolly Bove + Quigg LLP |
主权项 |
1. An LCD device comprising:
a backlight module comprising:
a light guide plate comprising a light emitting surface, a bottom surface opposite to the light emitting surface, and protrusions on the bottom surface, the light guide plate comprising a light-mixing part and a light-homogenized part connected to the light-mixing part, wherein a density of the protrusions in the light-mixing part is greater than a density of the protrusions in the light-homogenized part; anda plurality of light sources positioned adjacent to the light-mixing part and away from the light-homogenized part relative to the light-mixing part; a liquid crystal layer positioned above the light emitting surface, and comprising an adjustable part corresponding to the light-mixing part and a nonadjustable part corresponding to the light-homogenized part; a brightness detecting module configured for acquiring a brightness distribution data of the liquid crystal layer; and a control unit configured for obtaining the brightness distribution data from the brightness detecting module and adjusting a brightness of the adjustable part to make the brightness of the adjustable part coincide with a brightness of the nonadjustable part according to the brightness distribution data. |
地址 |
New Taipei TW |