Samsung Sdi Co., Inc.

Hidehito Ogawa

Yukika Yamada

Yoshitaka Terao

Masayuki Otawara

Takashi Komatsu

Je-Hwan Oh

Ryutaro Okamoto

A plasma display panel brightness correction circuit, a brightness correction method, a video display, and a video display method are provided. One embodiment includes a continuity detector that receives video signals and detects those of the video signals having signal level values which are greater than or less than a predetermined value. A video signal corrector is also provided for applying correction factors. The correction factors are calculated according to the ratio of pixels with signal level values greater than the predetermined value to the pixels with signal level values less than the predetermined value. The video signal corrector then corrects the levels of the video signals.

Plasma display panel brightness correction circuit and method, and plasma display panel video display device and method

A plasma display includes first and second substrates provided opposing one another. A plurality of first electrodes is formed on a surface of the first substrate facing the second substrate. A first dielectric layer is formed covering the first electrodes. A plurality of main barrier ribs is formed on a surface of the second substrate facing the first substrate, the main barrier ribs defining a plurality of discharge cells. A plurality of electrode barrier ribs is formed on the second substrate between the main barrier ribs. Phosphor layers are formed within the discharge cells, and discharge gas included in the discharge cells, where the main barrier ribs are formed integrally to the second substrate, and a second electrode and a second dielectric layer are formed, in this order, on a distal end of each of the electrode barrier ribs. A method of manufacturing the plasma display includes the processes of integrally forming a plurality of main barrier ribs on a plasma display substrate, the main barrier ribs defining a plurality of discharge cells, forming electrode barrier ribs between the main barrier ribs, forming an electrode on a distal end of each of the electrode barrier ribs, and forming a dielectric layer on each of the electrodes.

Plasma display panel having specific rib configuration

Plasma display and manufacturing method thereof

A contrast correcting circuit for preventing white distortion in a dark screen comprises: an integrator for integrating brightness levels of video signals, and for calculating a sum of the brightness levels; a ROM for storing different types of table data exhibiting contrast conversion characteristics according to the brightness; a selection signal generator for setting as a reference value the sum of the brightness levels of all of the pixels when the brightness levels are at a maximum, for comparing the reference value with an integration output of the integrator, and for instructing the ROM to selectively output table data suitable for the brightness of a screen selected from the different types of table data; and a RAM for storing a conversion table for correcting the contrasts of the video signals by means of the table data.

Contrast correcting circuit

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Yokohama, Japan

Hidehito Ogawa