Global Patent Index - EP 1255238 A1

EP 1255238 A1 2002-11-06 - Compensation method for improving color purity and color temperature of a plasma display panel

Title (en)

Compensation method for improving color purity and color temperature of a plasma display panel

Title (de)

Verfahren zur Verbesserung der Farbeneinheit und Farbtemperatur einer Plasmaanzeigetafel

Title (fr)

Procédé de compensation pour améliorer la pureté de couleur et la température de couleur d'un panneau d'affichage à plasma

Publication

EP 1255238 A1 (EN)

Application

EP 01110881 A

Priority

EP 01110881 A

Abstract (en)

A compensation process for improving color saturation and image quality of a plasma display panel (PDP) is provided, wherein a brightness of light generated from each of red, green, and blue discharge cells of each pixel on said PDP is calculated through a numeric operation according to laws of color matching. The process comprises the step of increasing or decreasing the strength of input image signals of each of the red, green, and blue discharge cells in accordance with the calculation result for adjusting brightness of the generated red, green, and blue lights so as to subtract a visible light generated by gas in each of the red, green, and blue discharge cells during gas discharging, thereby eliminating an adverse effect of the visible light on color purity and color temperature of the PDP during gas discharging. This can obtain an image on PDP having an optimum color purity and color temperature and reduce the manufacturing cost. <IMAGE>

IPC 1-7 (main, further and additional classification)

G09G 3/28

IPC 8 full level (invention and additional information)

G09G 3/28 (2013.01)

CPC (invention and additional information)

G09G 3/2003 (2013.01); G09G 3/288 (2013.01); G09G 2320/0242 (2013.01); G09G 2320/0626 (2013.01); G09G 2320/0666 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB IT NL

EPO simple patent family

EP 1255238 A1 20021106

INPADOC legal status


2012-03-07 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20110916

2007-12-26 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20071122

2003-07-23 [AKX] PAYMENT OF DESIGNATION FEES

- Designated State(s): DE FR GB IT NL

2002-11-06 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020522

2002-11-06 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2002-11-06 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI