公开(公告)号：EP2549322A4

公开(公告)日：2013-07-31

申请号：EP11756117

申请日：2011-03-07

申请人： FUNAI ELECTRIC CO

发明人： NISHIOKA KEN ,  NAGASHIMA KENJI ,  HIRANO ATSUYA ,  CHIKAOKA ATSUHIKO

IPC分类号： G02B26/10 ,  G02B27/48 ,  G09G3/02

CPC分类号： G02B27/48 ,  G02B26/10 ,  G09G3/002 ,  G09G3/02 ,  G09G2320/0233

摘要： Disclosed is a display device capable of inhibiting a projected picture from occurrence of brightness unevenness while reducing speckle noise. The display device (100) includes a control portion (15) continuously supplying current to a laser beam generation portion (12, 13, 14) nonstop for a period longer than a first period thereby controlling the laser beam generation portion to output the laser beam and controlling the laser beam generation portion to stop the output of the laser beam at least once in a second period scanning one image forming element (1, 2) .

公开(公告)号：EP2597505A4

公开(公告)日：2017-08-16

申请号：EP11809426

申请日：2011-07-11

申请人： FUNAI ELECTRIC CO

发明人： NISHIOKA KEN ,  NAGASHIMA KENJI ,  HIRANO ATSUYA ,  CHIKAOKA ATSUHIKO

IPC分类号： H04N9/31 ,  G02B26/10 ,  G02B27/48 ,  G03B21/00 ,  G03B21/14 ,  G09G3/02 ,  G09G3/20 ,  H01S5/042 ,  H01S5/0683

CPC分类号： G02B27/48 ,  G03B21/2033 ,  G03B33/06 ,  G03B33/12 ,  G09G3/02 ,  G09G2360/145 ,  H01S5/005 ,  H01S5/4093 ,  H04N9/3129 ,  H04N9/3167

摘要： To prevent effectively the flickering of an image due to the switching of a polarization direction while reducing speckle noise. A polarization switching unit 6 is provided in an optical path of laser light to a projection surface A and periodically switches a polarization direction of the laser light emitted therefrom between p and S polarization. A laser control unit 13 controls laser light sources 2a to 2c in synchronization with the switching by the polarization switching unit 6 and determines a driving current corresponding to a grayscale to be displayed on the basis of driving current characteristics for P polarization when the polarization direction of the laser light is the P polarization. In addition, the laser control unit 13 determines the driving current corresponding to the grayscale to be displayed on the basis of the driving current characteristics for P polarization when the polarization direction of the laser light is the S polarization.

摘要翻译： 为了有效防止由于偏振方向的切换而造成的图像闪烁，同时减少散斑噪声。 偏振切换单元6被设置在激光的光路中到投影表面A并周期性地切换从其发射的激光的偏振方向在p和S偏振之间。 激光控制单元13与偏振切换单元6的切换同步地控制激光光源2a至2c，并且当偏振方向为偏振方向时，基于用于P偏振的驱动电流特性确定与要显示的灰度相对应的驱动电流 激光是P偏振。 另外，当激光的偏振方向是S偏振时，激光控制单元13基于用于P偏振的驱动电流特性来确定与要显示的灰度相对应的驱动电流。