EL display apparatus
DCFirst Claim
1. An electroluminescent (EL) display apparatus, comprising:
- a display screen including a plurality of gate signal lines which is arranged to intersect a plurality of source signal lines, and a pixel provided with an EL device corresponding to each intersection of the plurality of gate signal lines and the plurality of source signal lines;
a driving transistor provided for each pixel to supply a current to the EL device;
a first switch transistor provided for each pixel on a current path through which the current is supplied by the driving transistor to the EL device; and
a gate driver circuit connected to the plurality of gate signal lines,wherein the gate driver circuit is configured to turn the first switch transistor on and off to simultaneously generate a plurality of band-shaped non-display regions and a plurality of band-shaped display regions on the display screen and to move the plurality of band-shaped non-display regions and the plurality of band-shaped display regions relative to the display screen, the plurality of band-shaped non-display regions being spaced apart on the display screen with one of the plurality of band-shaped display regions being between a pair of the plurality of band-shaped non-display regions, and the plurality of band-shaped display regions being spaced apart on the display screen with one of the plurality of band-shaped non-display regions being between a pair of the plurality of band-shaped display regions, andthe gate driver circuit is configured to change a ratio of an area of the plurality of band-shaped non-display regions on the display screen to an area of the plurality of band-shaped display regions on the display screen depending on at least one of a brightness adjustment, a type of image data, or whether a display image is a motion image or a still image.
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Abstract
An electroluminescent (EL) display apparatus and corresponding method of control are provided. A display screen includes gate signal lines which are arranged to intersect source signal lines. A pixel provided with an EL device corresponds to each intersection of the gate signal lines and the source signal lines. A driving transistor is provided for each pixel to supply a current to the EL device. A first switch transistor is provided for each pixel on a current path through which the current is supplied to the EL device. A gate driver circuit is connected to the gate signal lines. The gate driver circuit is configured to turn the first switch transistor on and off to simultaneously generate band-shaped non-display regions and band-shaped display regions on the display screen and to move the non-display regions and the display regions relative to the display screen.
47 Citations
19 Claims
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1. An electroluminescent (EL) display apparatus, comprising:
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a display screen including a plurality of gate signal lines which is arranged to intersect a plurality of source signal lines, and a pixel provided with an EL device corresponding to each intersection of the plurality of gate signal lines and the plurality of source signal lines; a driving transistor provided for each pixel to supply a current to the EL device; a first switch transistor provided for each pixel on a current path through which the current is supplied by the driving transistor to the EL device; and a gate driver circuit connected to the plurality of gate signal lines, wherein the gate driver circuit is configured to turn the first switch transistor on and off to simultaneously generate a plurality of band-shaped non-display regions and a plurality of band-shaped display regions on the display screen and to move the plurality of band-shaped non-display regions and the plurality of band-shaped display regions relative to the display screen, the plurality of band-shaped non-display regions being spaced apart on the display screen with one of the plurality of band-shaped display regions being between a pair of the plurality of band-shaped non-display regions, and the plurality of band-shaped display regions being spaced apart on the display screen with one of the plurality of band-shaped non-display regions being between a pair of the plurality of band-shaped display regions, and the gate driver circuit is configured to change a ratio of an area of the plurality of band-shaped non-display regions on the display screen to an area of the plurality of band-shaped display regions on the display screen depending on at least one of a brightness adjustment, a type of image data, or whether a display image is a motion image or a still image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An electroluminescent display apparatus, comprising:
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a display screen including a plurality of gate signal lines which is arranged to intersect a plurality of source signal lines, and a pixel provided with an EL device corresponding to each intersection of the plurality of gate signal lines and the plurality of source signal lines; a driving transistor provided for each pixel to supply a current to the EL device; a first switch transistor provided for each pixel on a current path through which the current is supplied by the driving transistor to the EL device; a gate driver circuit connected to the plurality of gate signal lines; a second switch transistor provided for each pixel to supply, to the driving transistor, an image signal supplied by the plurality of source signal lines; and a third switch transistor between a gate terminal and a drain terminal of the driving transistor, wherein the gate driver circuit is configured to turn the first switch transistor on and off to simultaneously generate a plurality of band-shaped non-display regions and a plurality of band-shaped display regions on the display screen and to move the plurality of band-shaped non-display regions and the plurality of band-shaped display regions relative to the display screen, the gate driver circuit includes a first gate driver circuit and a second gate driver circuit, a first gate signal line is connected to a gate terminal of the first switch transistor and a second gate signal line is connected to a gate terminal of the second switch transistor, the first gate driver circuit supplies an on/off signal for the first switch transistor to the first gate signal line and the second gate driver circuit supplies an on/off signal for the second switch transistor to the second gate signal line, the second gate signal line is connected to a gate terminal of the third switch transistor, the second gate driver circuit supplies the on/off signal for the third switch transistor to the second gate signal line, and the first gate driver circuit and second gate driver circuit control the first gate signal line and the second gate signal line independently.
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19. A method of controlling an electroluminescent (EL) display apparatus,
the EL display apparatus comprising: -
a display screen including a plurality of gate signal lines which is arranged to intersect a plurality of source signal lines, and a pixel provided with an EL device corresponding to each intersection of the plurality of gate signal lines and the plurality of source signal lines; a driving transistor provided for each pixel to supply a current to the EL device; a first switch transistor provided for each pixel on a current path through which the current is supplied by the driving transistor to the EL device; and a gate driver circuit connected to the plurality of gate signal lines, the method comprising; turning the first switch transistor on and off to simultaneously generate a plurality of band-shaped non-display regions and a plurality of band-shaped display regions on the display screen and to move the plurality of band-shaped non-display regions and the plurality of band-shaped display regions relative to the display screen, the plurality of band-shaped non-display regions being spaced apart on the display screen with one of the plurality of band-shaped display regions being between a pair of the plurality of band-shaped non-display regions, and the plurality of band-shaped display regions being spaced apart on the display screen with one of the plurality of band-shaped non-display regions being between a pair of the plurality of band-shaped display regions, and the gate driver circuit is configured to change a ratio of an area of the plurality of band-shaped non-display regions on the display screen to an area of the plurality of band-shaped display regions on the display screen depending on at least one of a brightness adjustment, a type of image data, or whether a display image is a motion image or a still image.
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Specification