04345248 is referenced by 136 patents and cites 2 patents.

A novel type of liquid crystal display device is disclosed, whereby data can be written in, via the display device, by utilizing light-generating means such as a light pen. The display device is of matrix configuration, with a switching element being provided individually for each of the elements of the display matrix, and is characterized by a photoelectric element being provided for each display element, whereby data is written in. The discrimination circuit means whereby the statuses of the photoelectric elements are sensed, in a time sharing manner, can utilize the same row and column electrodes used to drive the switching elements of the display matrix, and the photoelectric elements can be formed during the same process, and upon the same substrate, as the switching elements.

Title
Liquid crystal display device with write-in capability
Application Number
6/215900
Publication Number
4345248
Application Date
December 12, 1980
Publication Date
August 17, 1982
Inventor
Akira Tsuzuki
Tokorozawa
JP
Seigo Togashi
Tokorozawa
JP
Agent
Jordan and Hamburg
Assignee
Citizen Watch Company
JP
IPC
G06F 3/02
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