Abstract: A method for inspecting a display panel in which pixels each including a drive transistor that passes a drive current when signal voltage is applied to the gate of the drive transistor, and a light-emitting element that emits light according to the flow of the drive current are arranged in rows and columns, includes: applying, across the gate and the source of the drive transistor, an initialization voltage less than or equal to the threshold voltage of the drive transistor; applying a power supply voltage to the drain of the drive transistor to which the initialization voltage is applied across the gate and the source; and determining, as a defective pixel with a current leak, a pixel having a light-emitting element that does not emit light when the power supply voltage is applied to the drain of the drive transistor and emits light after the elapse of a predetermined period.

Abstract: A method for inspecting a display panel in which pixels each including a drive transistor that passes a drive current when signal voltage is applied to the gate of the drive transistor, and a light-emitting element that emits light according to the flow of the drive current are arranged in rows and columns, includes: applying, across the gate and the source of the drive transistor, an initialization voltage less than or equal to the threshold voltage of the drive transistor; applying a power supply voltage to the drain of the drive transistor to which the initialization voltage is applied across the gate and the source; and determining, as a defective pixel with a current leak, a pixel having a light-emitting element that does not emit light when the power supply voltage is applied to the drain of the drive transistor and emits light after the elapse of a predetermined period.

Abstract: A plurality of subfields of a field period includes a subfield for performing an every-cell initialization causing an initial discharge in every discharge cell in an initialization period, and includes a subfield for performing a selective initialization causing the initial discharge in a predetermined discharge cell in the initialization period. In a low-luminance subfield, the every-cell initialization is performed, and a low-luminance subfield is subsequently located (in the field period) to the subfield for the every-cell initialization. In a sustain period of the subfield for performing the every-cell initialization or a sustain period of the low-luminance subfield, a width of a first sustain pulse is set wider than a width of a second sustain pulse, and the width of the second sustain pulse is set wider than the width of a third sustain pulse and subsequent others.

Abstract: The plasma display device has a sustain pulse generating circuit for generating sustain pulses in a sustain period. The sustain pulse generating circuit generates at least two kinds of sustain pulses of different rising gradients in the sustain period, generates a predetermined number of sustain pulse whose rising gradient becomes steeper to the latter half in at least one-side electrode in the sustain period after first two sustain pulses and except an erasing pulse, and continuously generates the sustain pulses while the rising gradient of the sustain pulses is varied in response to the light emitting rate of the plasma display panel in the sustain period.

Abstract: A plasma display panel driving method and a plasma display device estimate the highest temperature and the lowest temperature the panel can have, according to the temperature detected by the thermal sensor, and appropriately drives the panel, to improve the image display quality. Provided are at least three driving modes having different sub-field structures: a low-temperature driving mode, an ordinary-temperature driving mode, and a high-temperature driving mode. To drive the panel, estimates of the highest temperature and the lowest temperature the panel can have are made from the temperature detected by the thermal sensor, the temperature condition of the panel is determined from the estimated highest temperature or lowest temperature, and the driving mode is switched appropriately for the panel temperature condition.

Abstract: A plasma display device includes an AD converter; a video signal processing circuit producing subfield data; a subfield processing circuit producing control signals of each of drive circuits; a plasma display panel having scan electrodes and sustain electrodes which are alternately arranged in n rows, and data electrodes in (k+m) columns arranged in a direction of intersecting with the scan and sustain electrodes; a scan-electrode drive circuit for driving scan electrodes; a sustain-electrode drive circuit for driving sustain electrodes; and a data-electrode drive circuit which has a first drive circuit for driving data electrodes and a second drive circuit for driving data electrodes, and applies writing pulse voltage in order from a data electrode group nearest to the scan-electrode drive circuit.

Abstract: A method for driving a plasma display panel including a plurality of discharge cells each having a scan electrode and a sustain electrode. One field includes a plurality of subfields each having an address period for generating address discharge in a discharge cell, and a sustain period for alternately applying a sustain pulse to the scan electrode and the sustain electrode to generate sustain discharge in the discharge cell in which the address discharge has been generated. The sustain pulse includes a first sustain pulse rising gently and a second sustain pulse rising more steeply than the first sustain pulse. At least one of the sustain pulses applied secondly and thirdly to the scan electrode is the second sustain pulse, and at least one of the sustain pulses applied secondly and thirdly to the sustain electrode is the second sustain pulse.

Abstract: In a method of driving an AC plasma display panel of the present invention, one field period is made of a plurality of sub-fields (SFs), each including an initializing period, writing period, and sustaining period, and a part of sustaining operation in the sustaining period in at least one of the plurality of SFs and a part of selective initializing operation in the initializing period in a SF following the at least one SF are performed at the same time. The method comprises making a pulse width of a top sustain pulse in one of the sustaining periods in the plurality of SFs different from that in another of the sustaining periods therein. This method limits the SFs in which any erroneous discharge occurs to lower order of SFs and can inhibit the brightness of the erroneous discharge.

Abstract: A plasma display device includes an AD converter; a video signal processing circuit producing subfield data; a subfield processing circuit producing control signals of each of drive circuits; a plasma display panel having scan electrodes and sustain electrodes which are alternately arranged in n rows, and data electrodes in (k+m) columns arranged in a direction of intersecting with the scan and sustain electrodes; a scan-electrode drive circuit for driving scan electrodes; a sustain-electrode drive circuit for driving sustain electrodes; and a data-electrode drive circuit which has a first drive circuit for driving data electrodes and a second drive circuit for driving data electrodes, and applies writing pulse voltage in order from a data electrode group nearest to the scan-electrode drive circuit.

Abstract: A plasma display panel driving method and a plasma display device estimate the highest temperature and the lowest temperature the panel can have, according to the temperature detected by the thermal sensor, and appropriately drives the panel, to improve the image display quality. Provided are at least three driving modes having different sub-field structures: a low-temperature driving mode, an ordinary-temperature driving mode, and a high-temperature driving mode. To drive the panel, estimates of the highest temperature and the lowest temperature the panel can have are made from the temperature detected by the thermal sensor, the temperature condition of the panel is determined from the estimated highest temperature or lowest temperature, and the driving mode is switched appropriately for the panel temperature condition.

Abstract: The present invention provides a method of driving a plasma display panel that displays an image with high brightness, high contrast, and high display quality by stabilizing selective initializing operation. To realize it, a plurality of subfields each having a setup period, an address period, and a sustain period are provided in one field period. Retention time for retaining voltages to be applied to a scan electrode and a sustain electrode is provided between time when voltage for weakening the final sustain discharge in the sustain period is applied to the sustain electrode and time when a ramp waveform voltage which decreases is applied to the scan electrode in the setup period in the following subfield. The retention time is controlled based on average brightness of image signals or ambient temperature.

Abstract: A projection television has a rear projection screen including a Fresnel lens and a lenticular lens, and a smoke sheet. The screen is characterized in that a dye or a pigment is mixed into the lenticular lens sheet or the smoke sheet which thereby has a waveform selection transmittance having the following transmittance values:.gtoreq.65% when incident light wavelength is <490 nm..ltoreq.60% when incident light wavelength is 490 nm-660 nm.wherein the transmittance, for incident light wavelength 490 nm-580 nm., is substantially different from the transmittance when the wavelength is 580 nm.-660 nm.