Active matrix display with variable duty cycle
First Claim
Patent Images
1. An active matrix display device (10) having a plurality of pixels (110), wherein the pixels (110) are grouped into pixel groups (R′
- , G′
, B′
), according to a dominant degradation mechanism common to the pixels in each pixel group, and circuitry is present to drive each pixel group (R′
, G′
, B′
) at a specific duty cycle (62;
73;
82), wherein at least two pixel groups (R′
, G′
, B′
) are assigned different duty cycles.
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Abstract
The invention relates to an active matrix display device (10) having a plurality of pixels (110). The pixels are grouped into pixel groups (R′, G′, B′). Each pixel group (R′, G′, B′) is assigned a specific duty cycle, such that at least two pixel groups are assigned different duty cycles. The device furthermore comprises circuitry (54) for driving each pixel group (R′, G′, B′) at its assigned duty cycle. The invention also relates to the driving of such display devices.
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Citations
20 Claims
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1. An active matrix display device (10) having a plurality of pixels (110), wherein the pixels (110) are grouped into pixel groups (R′
- , G′
, B′
), according to a dominant degradation mechanism common to the pixels in each pixel group, and circuitry is present to drive each pixel group (R′
, G′
, B′
) at a specific duty cycle (62;
73;
82), wherein at least two pixel groups (R′
, G′
, B′
) are assigned different duty cycles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 15, 16)
- , G′
-
9. An active matrix display device (10) having a plurality of pixels (110), wherein the pixels (110) are grouped into pixel groups (R′
- , G′
, B′
), and circuitry is present to drive each pixel group (R′
, G′
, B′
) at a specific duty cycle (62;
73;
82), wherein at least two pixel groups (R′
, G′
, B′
) are assigned different duty cycles, and wherein the circuity is arranged to address (71, 72;
81) a pixel group (R′
, G′
, B′
) more than one time in each picture frame. - View Dependent Claims (10)
- , G′
-
11. A method for driving pixels (110) in an active matrix display device (10) comprising the steps of:
-
grouping the pixels into pixel groups (R′
, G′
, B′
);assigning a specific duty cycle (62;
73;
82) to each pixel group (R′
, G′
, B′
), wherein the specific duty cycles (62;
73;
82) are adjusted so as to reduce the degradation of the pixel/pixels (110) in the corresponding pixel group (R′
, G′
, B′
); anddriving each pixel (110) at the specific duty cycle (62;
73;
82) that is assigned to its pixel group (R′
, G′
, B′
). - View Dependent Claims (12, 13, 14, 17, 18, 19, 20)
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Specification
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Current AssigneeInnoLux Corporation
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Original AssigneeTPO Displays Corporation (InnoLux Corporation)
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InventorsRosmalen, Gerard Eduard
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Primary Examiner(s)Shalwala; Bipin
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Assistant Examiner(s)KOVALICK, VINCENT E
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Application NumberUS10/527,361Publication NumberTime in Patent Office1,936 DaysField of Search345/55, 345/87, 345/89, 345/98, 345/212, 345/214, 345/215, 315/169.1, 349/69US Class Current345/204CPC Class CodesG09G 2320/043 Preventing or counteracting...G09G 2330/021 Power management, e.g. powe...G09G 3/2014 by modulation of the durati...G09G 3/2022 using sub-framesG09G 3/3208 organic, e.g. using organic...G09G 3/3648 using an active matrix G09G...
