Multifocal ophthalmic lens
Flat panel display device having on-screen data input function
Liquid crystal light valve utilizing hydrogenated amorphous silicon photodiode
Liquid crystal display device
Liquid crystal displays
Liquid crystal display device having optically activatable switch means
Liquid crystal display device having photosensor at each pixel Patent #: 5446564
ApplicationNo. 606910 filed on 02/22/1996
US Classes:349/42, Transistor349/70, Fluorescent light source349/106, Color filter349/108, With plural colors for each display element (i.e., each pixel or segment)349/116Photoconductive element (i.e., not used for exciting)
ExaminersPrimary: Sikes, William L.
Assistant: Ngo, Lien
International ClassesG02F 001/136
AbstractThe active matrix liquid crystal display panel comprises a matrix of predetermined color filters, arranged in a predetermined configuration within a viewing area, deposited on a first substrate, and a first plate of an activating element is deposited over the matrix of predetermined color filters. A plurality of second plates of the activating element is deposited on a second substrate opposite each color filter. When a predetermined second plate is activated, light is permitted to pass through the corresponding filter, the light exiting the first substrate having the color of the corresponding filter. A plurality of thin film transistors is deposited on the second substrate and forms the control elements, each control element corresponding to a corresponding second plate of the activating element, the control element selecting predetermined second plate in response to control signals. The display panel includes a liquid crystal material filled in a space between the first and second substrate. At least one photodiode is deposited on the second substrate outside the viewing area, the photodiode generating a voltage proportional to ambient lighting conditions around the exterior of the first substrate. The photodiode is fabricated utilizing the same steps utilized in fabricating the display panel.