| CPC G09G 3/006 (2013.01) [G09G 3/3291 (2013.01); G09G 2320/045 (2013.01); G09G 2330/02 (2013.01); G09G 2340/14 (2013.01)] | 18 Claims |
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1. A display device, comprising:
a plurality of subpixels in which a light-emitting element and a driving transistor for driving the light-emitting element are disposed;
a data driving circuit configured to supply a data voltage to each of the plurality of subpixels; and
a degradation management circuit configured to calculate an accumulated stress data of each of the plurality of subpixels, classify and compress the accumulated stress data as a first type data which is lossless-compressed and a second type data which is loss-compressed, and provide a bit size information for restoration matched to a loss-compressed data,
wherein the degradation management circuit is configured to determine the bit size information for restoration according to a comparison result between the second type data and a loss reference value for a loss-compression, and
wherein the degradation management circuit is configured to determine the loss reference value according to a bit margin calculated based on a bit size of data to which the first type data is lossless-compressed.
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12. A sensing-less compensating system for a device having a data driving circuit and a plurality of subpixels, the sensing-less compensation system comprising:
a data signal output unit configured to receive an image data signal, generate a driving data signal based on the image data signal and a compensation data, and output the driving data signal to the data driving circuit; and
a degradation management unit configured to calculate an accumulated stress data updated based on an input stress data corresponding to the driving data signal and a pre-stored accumulated stress data, loss-compress a part of the accumulated stress data updated, and provide a bit size information matched to a loss-compressed data,
wherein:
the data driving circuit is configured to supply, to a subpixel of the plurality of subpixels, a data voltage based on a second driving data signal;
the data voltage supplied to the subpixel is based on the accumulated stress data updated,
the degradation management unit comprises a decoding module configured to restore the pre-stored accumulated stress data; and
the decoding module is configured to restore the loss-compressed data based on a loss reference value used for loss-compressing the loss-compressed data and the bit size information for restoration.
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16. A method for compressing and applying data of a sensing-less compensating system to a device having a plurality of subpixels, the method comprising:
classifying an accumulated stress data as a first type data for a lossless-compression and a second type data for a loss-compression;
comparing the second type data with a loss reference value determined based on the first type data; and
generating a bit size information for restoration matched to a loss-compressed data according to a comparison result of the second type data and the loss reference value,
wherein:
a data voltage generated based on the accumulated stress data is supplied to drive a subpixel of the plurality of subpixels.
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18. A sensing-less compensating system for a device having a data driving circuit and a plurality of subpixels, the sensing-less compensation system comprising:
a storage unit configured to store accumulated stress data representing a degradation degree of a circuit element disposed in each of the plurality of subpixels;
a degradation compensator configured to determine a degradation degree of the circuit element disposed in each of the plurality of subpixels based on data stored in the storage unit, obtain a compensation value corresponding to the degradation degree of the circuit element, and output the compensation value; and
a degradation management unit configured to calculate an accumulated stress data updated based on an input stress data corresponding to a driving data signal and a pre-stored accumulated stress data in the storage unit, loss-compress a part of the accumulated stress data updated, and provide a bit size information matched to a loss-compressed data,
wherein if the input stress data is greater than a loss reference value, the degradation management unit is configured to update the accumulated stress data by adding the loss reference value and the input stress data to the pre-stored accumulated stress data.
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