Drive unit for a luminescence display panel
First Claim
1. A drive unit for a luminescence display panel which includes a plurality of drive lines and a plurality of scan lines intersecting each other and a plurality of capacitive light emitting elements connected between the drive lines and the scan lines at a plurality of intersecting positions by the scan lines and the drive lines, The drive unit comprising a light emission control means which can select a normal scan mode in which all effective light emitting elements in the luminescence display panel are repeatedly scanned to control the luminescence thereof and a partial scan mode in which part of the effective light emitting elements in the luminescence display panel are repeatedly scanned to control the luminescence thereof, wherein the light emission control means executes a switching operation for the respective scan modes in synchronism with scanning start of a first scan line in each scan mode.
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Accused Products
Abstract
In a luminescence display panel employing organic EL elements, at the time of switching of a normal scan mode and a partial scan mode, occurrence of an unpleasant phenomenon such as flicker and the like on a display screen is restrained. When a switching command for changing a scan mode is supplied from a scan mode alteration circuit (13) to a light emission control section (11), a control circuit (18) controls so that a switching operation of a scan mode is executed at the time of scanning start of a first scan line or during scanning of a dummy line set after a final scan line. Thus, in a luminescence display panel (1) employing organic EL elements, a light emission display by a new scan mode is performed from the first scan line in one frame, and occurrence of an unpleasant phenomenon such as flicker can be restrained.
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Citations
12 Claims
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1. A drive unit for a luminescence display panel which includes a plurality of drive lines and a plurality of scan lines intersecting each other and a plurality of capacitive light emitting elements connected between the drive lines and the scan lines at a plurality of intersecting positions by the scan lines and the drive lines,
The drive unit comprising a light emission control means which can select a normal scan mode in which all effective light emitting elements in the luminescence display panel are repeatedly scanned to control the luminescence thereof and a partial scan mode in which part of the effective light emitting elements in the luminescence display panel are repeatedly scanned to control the luminescence thereof, wherein the light emission control means executes a switching operation for the respective scan modes in synchronism with scanning start of a first scan line in each scan mode.
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2. A drive unit for a luminescence display panel which includes a plurality of drive lines and a plurality of scan lines intersecting each other and a plurality of capacitive light emitting elements connected between the drive lines and the scan lines at a plurality of intersecting positions by the scan lines and the drive lines,
The drive unit comprising a light emission control means which can select a normal scan mode in which all effective light emitting elements in the luminescence display panel are repeatedly scanned to control the luminescence thereof and a partial scan mode in which part of the effective light emitting elements in the luminescence display panel are repeatedly scanned to control the luminescence thereof, wherein the light emission control means executes a switching operation for the respective scan modes during scanning of a dummy line set after a final scan line in each scan mode.
Specification