JP2007240798A5

JP2007240798A5 -

Info

Publication number: JP2007240798A5
Application number: JP2006062125A
Authority: JP
Filing date: 2006-03-08
Publication date: 2009-04-02

Claims

A display panel in which a plurality of dummy pixels are arranged in a distributed manner outside the effective display area;
A luminance detection sensor for detecting emission luminance of the plurality of dummy pixels at a measurement timing of luminance degradation;
Other than the measurement timing, the plurality of dummy pixels while controlling light emission by a gray level value corresponding to the reference pixels, the plurality of dummy pixels in the gradation value of the measurement set in advance in the measurement timing A dummy pixel data determining unit for controlling light emission;
A detection luminance averaging unit for obtaining an average value of detection luminances detected by the plurality of dummy pixels at each measurement timing;
A deterioration characteristic measurement unit for obtaining average actual measurement deterioration information of the plurality of dummy pixels based on the average value of the detected luminance;
Calculates the actual degradation rate corresponding to the average gray value on the basis of average gray value within the measured period and the said actual deterioration information, measured to calculate the actual degradation rate for gradation values other than the average gray scale value A deterioration rate calculator,
A self-luminous display device comprising: a table updating unit that updates a gradation value / degradation amount conversion table in which gradation values and deterioration amounts are associated with each other based on the calculated actual deterioration rate.

The self-luminous display device according to claim 1,
The measured deterioration rate calculation unit
Refer to the basic table that defines the basic correspondence between gradation value and deterioration rate,
The correspondence ratio αq / αp between the deterioration rate αp corresponding to the average gradation value p and the deterioration rate αq corresponding to the gradation value q to be calculated is set to the actually measured deterioration rate Xp corresponding to the average gradation value p. than to multiply, self-luminous display device characterized by calculating the actual degradation rate for gradation values other than the mean gray level.

The self-luminous display device according to claim 1,
The self-luminous display device, wherein the plurality of dummy pixels are separately arranged at least at the left and right outer positions of the effective display area.

The self-luminous display device according to claim 1,
The self-luminous display device, wherein the plurality of dummy pixels are arranged separately at least in an upper outer side position and a lower outer side position in an effective display area.

The self-luminous display device according to claim 4,
When the vertical length of the effective display area is greater than 200 mm,
The degradation characteristic actual measurement unit obtains first actual degradation information based on the detected luminance of the dummy pixels located outside the upper stage side or the average value thereof, and the dummy pixels located outside the upper stage side and the lower stage side Second measurement degradation information is obtained based on the average value of the detected brightness of
The measured deterioration rate calculation unit calculates an average gradation value based on an average gradation value within an actual measurement period and the first actually measured deterioration information for pixels located in a range of 200 mm or more from the lower end of the effective display area. It calculates the actual degradation rate corresponding to, to calculate the actual degradation rate for gradation values other than the average gray scale value, the pixel located within a range of 200mm from the lower end of the effective display area, the actual measurement period calculates the actual degradation rate corresponding to the average gray value on the basis of average gray level value between the said second measured degradation information, to calculate the actual degradation rate for gradation values other than the average gray scale value Self-luminous display device characterized by the above.

A display panel in which a plurality of dummy pixels are arranged in a distributed manner outside the effective display area;
A luminance detection sensor for detecting emission luminance of the plurality of dummy pixels at a measurement timing of luminance degradation;
Other than the measurement timing, the plurality of dummy pixels while controlling light emission by a gray level value corresponding to the reference pixels, emitting the plurality of dummy pixels in the gradation value of the measurement set in advance by measurement timing A dummy pixel data determining unit to be controlled;
A detection luminance averaging unit for obtaining an average value of detection luminances detected by the plurality of dummy pixels at each measurement timing;
Based on the average value of the detected luminance, a deterioration characteristic actual measurement unit for obtaining average actual measurement deterioration information of the dummy pixels,
The cumulative value of the deterioration amount for the dummy pixel data calculated with reference to the gradation value / deterioration amount conversion table is compared with the measured deterioration information, and the error rate of the cumulative value of the deterioration amount with respect to the measured deterioration information is calculated. An estimated error rate calculation unit to perform,
Based on the calculated error rate, and a the gradation value / deterioration amount conversion table with reference to the Compensating the accumulated value of the deterioration amount that has been calculated for each pixel constituting the effective display area estimated error correction unit A self-luminous display device characterized by that.

The self-luminous display device according to claim 6,
The self-luminous display device, wherein the plurality of dummy pixels are separately arranged at least at the left and right outer positions of the effective display area.

The self-luminous display device according to claim 6,
The self-luminous display device, wherein the plurality of dummy pixels are arranged separately at least in an upper outer side position and a lower outer side position in an effective display area.

The self-luminous display device according to claim 8,
When the vertical length of the effective display area is greater than 200 mm,
The degradation characteristic actual measurement unit obtains first actual degradation information based on the detected luminance of the dummy pixels located outside the upper stage side or the average value thereof, and the dummy pixels located outside the upper stage side and the lower stage side Second measurement degradation information is obtained based on the average value of the detected brightness of
The estimated error rate calculation unit calculates an estimated value of the accumulated deterioration amount calculated from the dummy pixel data with respect to the first actually measured deterioration information for pixels located in a range of 200 mm or more from the lower end of the effective display area. For the pixels located within 200 mm from the lower end of the effective display area, an estimated value of the accumulated deterioration amount calculated from the dummy pixel data is included in the second actually measured deterioration information. A self-luminous display device characterized by calculating an error rate.

Deterioration of each pixel when a plurality of dummy pixels and a luminance detection sensor for detecting the emission luminance of each of the plurality of dummy pixels are arranged outside the effective display area in a distributed manner. An apparatus for updating a gradation value / deterioration rate conversion table referred to for calculating information,
Other than the measurement timing, the plurality of dummy pixels while controlling light emission by a gray level value corresponding to the reference pixels, emitting the plurality of dummy pixels in the gradation value of the measurement set in advance by measurement timing A dummy pixel data determining unit to be controlled;
A detection luminance averaging unit for obtaining an average value of detection luminances detected by the plurality of dummy pixels at each measurement timing;
Based on the average value of the detected luminance, a deterioration characteristic actual measurement unit for obtaining average actual measurement deterioration information of the dummy pixels,
Calculates the actual degradation rate corresponding to the average gray value on the basis of average gray value within the measured period and the said actual deterioration information, measured to calculate the actual degradation rate for gradation values other than the average gray scale value A deterioration rate calculator,
A gradation value / deterioration rate conversion table comprising: a table updating unit that updates a gradation value / degradation amount conversion table in which gradation values and deterioration amounts are associated with each other based on the calculated actual deterioration rate Update device.

An input display that outputs a plurality of dummy pixels in a distributed manner outside the effective display area and a luminance detection sensor that detects the emission luminance of each of the plurality of dummy pixels to a display panel arranged outside the effective display area A device for correcting data,
Other than the measurement timing, the plurality of dummy pixels while controlling light emission by a gray level value corresponding to the reference pixels, emitting the plurality of dummy pixels in the gradation value of the measurement set in advance by measurement timing A dummy pixel data determining unit to be controlled;
A detection luminance averaging unit for obtaining an average value of detection luminances detected by the plurality of dummy pixels at each measurement timing;
Based on the average value of the detected luminance, a deterioration characteristic actual measurement unit for obtaining average actual measurement deterioration information of the dummy pixels,
A deterioration amount calculating unit that calculates an estimated value of the deterioration amount caused by the dummy pixel data with reference to a gradation value / deterioration amount conversion table;
An estimated error rate calculation unit that compares the cumulative value of the calculated deterioration amount with the actually measured deterioration information and calculates an error rate of the cumulative value of deterioration amount with respect to the actually measured deterioration information;
Based on the calculated error rate, and a the gradation value / deterioration amount conversion table with reference to the Compensating the accumulated value of the deterioration amount that has been calculated for each pixel constituting the effective display area estimated error correction unit An input display data correction apparatus characterized by that.

Deterioration of each pixel when a plurality of dummy pixels and a luminance detection sensor for detecting the emission luminance of each of the plurality of dummy pixels are arranged outside the effective display area in a distributed manner. A computer program for updating a gradation value / deterioration rate conversion table referred to for calculating information,
Except for the measurement timing, the plurality of dummy pixels are continuously controlled to emit light with the gradation value corresponding to the reference pixel, while the plurality of dummy pixels with the measurement gradation value set in advance at the measurement timing. Dummy pixel data determination processing for controlling light emission,
Detection luminance averaging processing for obtaining an average value of detection luminance detected by the plurality of dummy pixels at each measurement timing;
Based on the average value of the detected luminance, deterioration characteristic actual measurement processing for obtaining average actual measurement deterioration information of the dummy pixels,
Calculates the actual deterioration rate corresponding to the average gray scale value based average gradation value in the actual measurement period and to said actual deterioration information, measured to calculate the actual degradation rate for gradation values other than the average gray scale value Deterioration rate calculation processing,
A program that causes a computer to execute table update processing for updating a gradation value / degradation amount conversion table that associates gradation values and deterioration amounts based on the calculated actual deterioration rate.

A computer program for correcting input display data input to a display panel in which dummy pixels and a luminance detection sensor are arranged outside an effective display area,
Except for the measurement timing, the plurality of dummy pixels are continuously controlled to emit light with the gradation value corresponding to the reference pixel, while the plurality of dummy pixels with the measurement gradation value set in advance at the measurement timing. Dummy pixel data determination processing for controlling light emission,
Detection luminance averaging processing for obtaining an average value of detection luminance detected by the plurality of dummy pixels at each measurement timing;
Based on the average value of the detected luminance, deterioration characteristic actual measurement processing for obtaining average actual measurement deterioration information of the dummy pixels,
The cumulative value of the deterioration amount for the dummy pixel data calculated with reference to the gradation value / deterioration amount conversion table is compared with the measured deterioration information, and the error rate of the cumulative value of the deterioration amount with respect to the measured deterioration information is calculated. Estimated error rate calculation processing to
Based on the calculated error rate, the computer and the estimation error correction process the accumulated value of the gradation value / deterioration amount conversion degradation amount calculated for each pixel table referring to the constituting effective display area compensation for A program characterized by being executed.