发明申请
- 专利标题: LIGHTING DEVICE, DISPLAY DEVICE, AND TELEVISION RECEIVER
- 专利标题(中): 照明设备,显示设备和电视接收器
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申请号: US13516804申请日: 2010-11-17
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公开(公告)号: US20120257140A1公开(公告)日: 2012-10-11
- 发明人: Takaharu Shimizu , Mamoru Takaya
- 申请人: Takaharu Shimizu , Mamoru Takaya
- 申请人地址: JP Osaka-shi, Osaka
- 专利权人: SHARP KABUSHIKI KAISHA
- 当前专利权人: SHARP KABUSHIKI KAISHA
- 当前专利权人地址: JP Osaka-shi, Osaka
- 优先权: JP2009-295151 20091225
- 国际申请: PCT/JP2010/070445 WO 20101117
- 主分类号: G02F1/13357
- IPC分类号: G02F1/13357 ; H05B37/02
摘要:
Uneven brightness is less likely to occur in lighting devices at low cost. A backlight unit 12 includes LEDs 17, a chassis 14 having a bottom plate 14a and housing the LEDs 17, and an LED drive controller 24 controlling drive of the LEDs 17. The LEDs 17 are arranged in a matrix in row and column directions (X-axis direction and Y-axis direction) along the bottom plate 14a, forming respective LED groups 25 each along the row direction. The LED groups 25 include a middle LED group 28 and an end side LED group 29. The middle LED group 28 is located in a middle portion of the bottom plate 14a in the column direction group and the end side LED group 29 is located closer to an end of the bottom part from the middle portion group. The LED drive controller 24 controls light of at least one of the middle LED group 28 and the end side LED group 29 such that the end side LED group 29 has relatively high brightness and the middle LED group 28 has relatively low brightness.
公开/授权文献
- US09019445B2 Lighting device, display device, and television receiver 公开/授权日:2015-04-28