Importance

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Abstract

An active matrix array device, such as an AMLCD, has an array of matrix elements (10) addressed via sets of address conductors (14, 16). An address circuit (35) connected to one set (16) includes a multiplexing circuit (31) integrated on the same substrate (25) as the matrix elements and the address conductors of the one set are organised in groups with each conductor in a group being associated with a respective and different one of a plurality of signal bus lines (33) in the multiplexer circuit. Each signal bus line (33) is connected to a respective signal processing circuit (42), e.g. a DAC in the case of an AMLCD, also integrated on the substrate as respective circuit blocks. To avoid problems in use, for example caused by variations in the performance of these signal processing circuits, the arrangement of couplings with the bus lines of the address conductors in adjacent groups is mirrored about the boundary between the groups.

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First Claim