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US 2003/0117347 A1Published application
Active matrix electroluminescent display device
AssigneeKoninklijke Philips Electronics N.V.
InventorsIain M. Hunter, Mark J. Childs
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AssigneeKoninklijke Philips Electronics N.V.
InventorsIain M. Hunter, Mark J. Childs
Estimating the term…
An active matrix electroluminescent (EL) display device comprises a matrix array of display cells (10) arranged in rows and columns, each cell comprising an EL display element (20) and driving circuitry. The cells are arranged in groups (12) which may constitute pixels. Each group of cells forms a series arrangement arranged so a data signal applied to the first cell in a series arrangement, via an associated data line (14), can be transferred to a neighbouring cell in the same group, and so on for subsequent cells in the group, upon application of a control signal applied to an associated control line (15). This device enables a digital drive scheme to be implemented. The provision of grouped display cells arranged so as to be driven in this way enables a grey scale to be implemented using fewer data lines (14) than usual.
An active matrix electroluminescent display device comprising a matrix array of display cells arranged in rows and columns, each cell comprising an electroluminescent display element and driving circuitry for controlling the current through the display element in response to applied data signals, driver means for driving the cells, the cells being organised in groups with each group comprising a plurality of adjacent cells within the same row which are connected in a series arrangement, each group having an associated data line through which data signals are supplied from the driver means, each row of cells having an associated control line through which control signals are supplied from the driver means, wherein the driver means is arranged so as to supply a data signal to the first cell within a group via its associated data line and that first cell is arranged to transfer the data signal to a neighbouring cell in the same group upon application of a control signal to its associated control line.
A method of driving an active matrix electroluminescent display device comprising a matrix array of display cells arranged in rows and columns, each cell comprising an electroluminescent display element, the cells being organised in groups, each group comprising a plurality of adjacent cells within the same row and which are connected to their neighbouring cells in a series arrangement and having an associated data line, each row of cells having an associated control line, the method comprising the steps of:
Dependencies are inferred from the claim text.