公开(公告)号：US5281806A

公开(公告)日：1994-01-25

申请号：US50673

申请日：1993-04-22

申请人： Kazuro Nishi ,  Hajime Nakajima ,  Masaya Mizunuma ,  Tatsuo Masumi ,  Shigeyuki Kaho ,  Tsuyoshi Horikawa ,  Shin Tahata

发明人： Kazuro Nishi ,  Hajime Nakajima ,  Masaya Mizunuma ,  Tatsuo Masumi ,  Shigeyuki Kaho ,  Tsuyoshi Horikawa ,  Shin Tahata

IPC分类号： G02F1/135 ,  G09G3/02 ,  H04N5/74 ,  H01J40/14

CPC分类号： G02F1/135 ,  G02F1/1354 ,  G09G3/02 ,  H04N5/7441 ,  G09G2310/061 ,  G09G2360/141 ,  G09G3/36

摘要： A liquid crystal light valve has a photoconductive layer between a pair of electrodes, and a liquid crystal layer. The resistivity of the photoconductive layer at the portion which is irradiated with light is reduced by partial light irradiation. By applying a voltage between the electrodes in this state, the voltage is applied to the liquid crystal layer in the portion which is irradiated with light and the crystalline structure at this portion is changed, thereby enabling image data writing. The photoconductive layer is a laminate of an amorphous Si film and an inorganic insulating film disposed on the electrode side, which structure suppresses the carrier injection from the electrode to the amorphous Si film. The polarity of a voltage for writing image data into the liquid crystal light valve is inverted for every horizontal scanning operation. That is, writing of black portions on a white background and writing of white portions on a black background are alternately executed. It is therefore possible to write data on one line and erase the data on the next line by a voltage of one polarity. By periodically setting a period in which no voltage is applied during writing, writing error caused by stored charges is prevented.

摘要翻译： 液晶光阀在一对电极和液晶层之间具有光电导层。 通过部分光照射，光照射部分的光电导层的电阻率降低。 通过在这种状态下在电极之间施加电压，将电压施加到被照射的部分中的液晶层，并且该部分的晶体结构发生变化，从而使图像数据写入。 光电导层是设置在电极侧的非晶Si膜和无机绝缘膜的层叠体，该结构抑制从电极向非晶Si膜的载流子注入。 对于每次水平扫描操作，将图像数据写入液晶光阀的电压的极性反转。 也就是说，交替地执行在白色背景上写入黑色部分并在黑色背景上写入白色部分。 因此，可以在一行上写入数据，并通过一个极性的电压擦除下一行的数据。 通过周期性地设定在写入期间不施加电压的周期，防止由存储的电荷引起的写入错误。

公开(公告)号：US5231282A

公开(公告)日：1993-07-27

申请号：US822109

申请日：1992-01-17

申请人： Kazuro Nishi ,  Hajime Nakajima ,  Masaya Mizunuma ,  Tatsuo Masumi ,  Shigeyuki Kaho ,  Tsuyoshi Horikawa ,  Shin Tahata

发明人： Kazuro Nishi ,  Hajime Nakajima ,  Masaya Mizunuma ,  Tatsuo Masumi ,  Shigeyuki Kaho ,  Tsuyoshi Horikawa ,  Shin Tahata

IPC分类号： G02F1/135 ,  G09G3/02 ,  H04N5/74

CPC分类号： G02F1/135 ,  G02F1/1354 ,  G09G3/02 ,  H04N5/7441 ,  G09G2310/061 ,  G09G2360/141 ,  G09G3/36

摘要： A liquid crystal light valve has a photoconductive layer between a pair of electrodes, and a liquid crystal layer. The resistivity of the photoconductive layer at the portion which is irradiated with light is reduced by partial light irradiation. By applying a voltage between the electrodes in this state, the voltage is applied to the liquid crystal layer in the portion which is irradiated with light and the crystalline structure at this portion is changed, thereby enabling image data writing. The photoconductive layer is a laminate of an amorphous Si film and an inorganic insulating film disposed on the electrode side, which structure suppresses the carrier injection from the electrode to the amorphous Si film. The polarity of a voltage for writing image data into the liquid crystal light valve is inverted for every horizontal scanning operation. That is, writing of black portions on a white background and writing of white portions on a black background are alternately executed. It is therefore possible to write data on one line and erase the data on the next line by a voltage of one polarity. By periodically setting a period in which no voltage is applied during writing, writing error caused by stored charges is prevented.

摘要翻译： 液晶光阀在一对电极和液晶层之间具有光电导层。 通过部分光照射，光照射部分的光电导层的电阻率降低。 通过在这种状态下在电极之间施加电压，将电压施加到被照射的部分中的液晶层，并且该部分的晶体结构发生变化，从而使图像数据写入。 光电导层是设置在电极侧的非晶Si膜和无机绝缘膜的层叠体，该结构抑制从电极向非晶Si膜的载流子注入。 对于每次水平扫描操作，将图像数据写入液晶光阀的电压的极性反转。 也就是说，交替地执行在白色背景上写入黑色部分并在黑色背景上写入白色部分。 因此，可以在一行上写入数据，并通过一个极性的电压擦除下一行的数据。 通过周期性地设定在写入期间不施加电压的周期，防止由存储的电荷引起的写入错误。