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1. 发明公开

KR1020000016257A 화상 판독기능을 가진 액정 표시장치, 화상판독방법 및 제조방법 无效
标题翻译：具有图像读取功能的液晶显示器，图像读取方法和制造方法
公开(公告)号：KR1020000016257A
公开(公告)日：2000-03-25
申请号：KR1019980709830
申请日：1998-04-22
申请人： 파나소닉 주식회사
发明人： 오가와카즈후미 , 이시카와신자브로 , 오카다타카시 , 타케토미요시나오
IPC分类号： G02F1/136 , G02F1/1335
CPC分类号： H04N1/00129 , G02F1/135 , G02F1/1368 , G09G3/3648 , G09G2300/0408 , G09G2300/0434 , G09G2300/0809 , G09G2310/0235 , H04N1/00127 , H04N1/028 , H04N1/02805 , H04N1/486 , H04N2201/0081
摘要： PURPOSE: A liquid crystal display and method thereof having an image reading function is disclosed. CONSTITUTION: A n-channel TFT (L) (26) which is connected to a transparent pixel electrode (24) and a p-channel TFT (D) (27) which is connected to the cathode side of a photodiode (25) are connected to a common source line (22) and a common gate line (23). When a positive voltage (VL) or a negative voltage (VD) are applied to the gate line (23), both the TFTs can be independently controlled to be in a ON-state. A backlight (18) which is provided on the rear of an active matrix panel (13) has monochromatic light sources (18a - 18c) emitting red, blue and green lights, and images of the colors are displayed in a time-division manner. When the images are read, by using the monochromatic light sources (18a - 18c) successively, the red, blue and green component images are read for every pixel. Only the parts of a liquid crystal layer (14) corresponding to every other pixel (P1) in the vertical and horizontal directions are brought into light transmitting states, a certain amount of charge is stored only in the photodiodes (25) of the pixels (P1), and the photodiodes (25) are exposed to light. Then the image formed by the pixels (P1) is read. The similar processes for the pixels adjacent to the pixels (P1) are repeated to read the image of the original for all the pixels.
摘要翻译：目的：公开了一种具有图像读取功能的液晶显示器及其方法。构成：连接到光电二极管（25）的阴极侧的透明像素电极（24）和p沟道TFT（D）（27）的n沟道TFT（L）（26）连接到公共源极线（22）和公共栅极线（23）。当将正电压（VL）或负电压（VD）施加到栅极线（23）时，两个TFT可被独立地控制在导通状态。设置在有源矩阵面板（13）的背面的背光（18）具有发出红色，蓝色和绿色光的单色光源（18a-18c），并且以时分方式显示颜色的图像。当读取图像时，通过连续使用单色光源（18a-18c），对于每个像素读取红色，蓝色和绿色分量图像。只有在垂直和水平方向上对应于每隔一个像素（P1）的液晶层（14）的部分成为透光状态，则一定量的电荷仅存储在像素的光电二极管（25）中（ P1），并且光电二极管（25）暴露于光。然后，读取由像素（P1）形成的图像。重复与像素（P1）相邻的像素的类似处理以读取所有像素的原始图像。

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