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Preliminary Development of a Solid-State Matrix Display.

AD649553

Publication Date	1967
Personal Author	Lechner, B. J.
Page Count	168
Abstract	The use of ferroelectric transchargers as storage and control elements in an electroluminescent matrix display is reported. Research on display panel circuitry led to control circuits useful for solid-state matrix display. In these circuits, ferroelectric elements provide analog storage and control energization of electroluminescent cells in accordance with stored analog signals. The ferroelectric, in conjunction with a diode, provides a selection threshold which permits the element to be addressed in a matrix by voltage coincidence. The new circuits give greatly improved brightness and contrast compared with previous ferroelectric control circuits. Transcharger circuits with logic capability have also been developed; such circuits are especially useful for bar graph, moving pointer, and similar displays. Three experimental model displays demonstrated brightness as high as 48 ft-L; contrast ratio in excess of 100:1; geometric resolution as great as 10-elements per in.; capability for producing a gray scale; and a frame rate which allows continuity of motion without blurring or flicker. The performance of these models demonstrates the potential of using ferroelectric control circuits and electroluminescent elements for high-brightness, high-resolution, all solid-state matrix displays. (Author)
Keywords	Display systems Solid state physics Electroluminescence Ferroelectric materials Circuits Control Logic circuits Scanning Ceramic materials
NTIS Subject Category	49B - Circuits 46D - Solid State Physics
Corporate Authors	Rca Labs Princeton N J
Document Type	Technical Report
Title Note	Final rept., 1 Apr 64-30 Apr 65.
NTIS Issue Number	196710
Contract Number	AF 33(615)-1493

Preliminary Development of a Solid-State Matrix Display.

Preliminary Development of a Solid-State Matrix Display.
AD649553

Publication Date	1967
Personal Author	Lechner, B. J.
Page Count	168
Abstract	The use of ferroelectric transchargers as storage and control elements in an electroluminescent matrix display is reported. Research on display panel circuitry led to control circuits useful for solid-state matrix display. In these circuits, ferroelectric elements provide analog storage and control energization of electroluminescent cells in accordance with stored analog signals. The ferroelectric, in conjunction with a diode, provides a selection threshold which permits the element to be addressed in a matrix by voltage coincidence. The new circuits give greatly improved brightness and contrast compared with previous ferroelectric control circuits. Transcharger circuits with logic capability have also been developed; such circuits are especially useful for bar graph, moving pointer, and similar displays. Three experimental model displays demonstrated brightness as high as 48 ft-L; contrast ratio in excess of 100:1; geometric resolution as great as 10-elements per in.; capability for producing a gray scale; and a frame rate which allows continuity of motion without blurring or flicker. The performance of these models demonstrates the potential of using ferroelectric control circuits and electroluminescent elements for high-brightness, high-resolution, all solid-state matrix displays. (Author)
Keywords	Display systems Solid state physics Electroluminescence Ferroelectric materials Circuits Control Logic circuits Scanning Ceramic materials
NTIS Subject Category	49B - Circuits 46D - Solid State Physics
Corporate Authors	Rca Labs Princeton N J
Document Type	Technical Report
Title Note	Final rept., 1 Apr 64-30 Apr 65.
NTIS Issue Number	196710
Contract Number	AF 33(615)-1493