Abstract: The anode sides of respective EL elements E1-E4 constituting icons are connected to a first potential V1, the cathode sides of the EL elements E1-E4 are connected to current absorption sides of constant current sources I1-I4, and current output sides of the constant current sources are connected to a second potential V2 whose potential is lower than that of the first potential via light emission control switches S11-S14. Current regulating resistors R101-R104 are connected in parallel corresponding to the respective EL elements E1-E4, and therefore by appropriately selecting the resistance values of the current regulating resistors R101-R104, light emission intensities of the respective EL elements E1-E4 constituting icons can be regulated appropriately. During an all extinction period during which the respective EL elements E1-E4 are all extinguished, an analog switch S201 is turned off, and an analog switch S202 is turned on.

Abstract: Provided is a driving device that enables compensating for the decrease in luminance characteristic due to the aging of an EL display panel. On a transparent substrate 11 made of, for example, glass, there are lamination-formed a number of luminescent elements 20. By this, a light from the luminescent element is radiated, via the transparent substrate, in a direction of its intersecting a substrate surface thereof, thereby a display image is formed. The driving device is equipped with photo-electric conversion means 23 that, when receiving part of the light from the luminescent element 20 that, by using as the interface a substrate surface of the transparent substrate 11 or a substrate surface of a light-guiding substrate 72 disposed on the transparent substrate 1 in a laminated state, is reflected within the substrate, produces an electric signal, as well as drive power setting means 25 that sets a luminescent drive power that is supplied to each of the luminescent elements.

Abstract: In an apparatus for driving a luminescent display panel, in a state in which scanning lines are sequentially scanned to drive and illuminate light-emitting elements, a voltage peak value arising in a scanning line in a non-scanning state is held by a capacitor through parasitic capacitance of the light-emitting element in a non-scanning state. On the basis of the voltage value held by the capacitor, a reverse bias voltage to be output from a reverse bias voltage generation circuit is controlled, and the voltage is supplied to the scanning lines.

Abstract: A measurement current whose value is lower compared to a light emission drive current If for allowing light emitting elements to emit light for display is supplied to an anode line, and a forward voltage value of the light emitting element of this time is obtained by a sample and hold circuit. This information is sent to a light emission control circuit, and the light emission control circuit obtains information corresponding to a forward voltage value of the light emitting element of when the light emission drive current is supplied to the light emitting element, out of a data table 11, based on information of the forward voltage value Vs. The output voltage VH of a DC-DC converter is controlled based on the information of this forward voltage value Vf.

Abstract: In order to realize, at a low cost, the function of an indicator which is brought to a light emitting state during a wait state, a panel 1 as a display section is constituted by self light emitting elements E11–Enm for example by organic EL elements, and organic EL elements which function as the indicator Ei which is brought to the light emitting state during the wait state are also formed on the same panel. Meanwhile, an indicator drive circuit 13 which drives and allows the organic EL elements that function as the indicator Ei to emit light is constructed by one chip IC together with the data driver 2. By forming the indicator drive circuit 13 as one chip IC in a data driver 2, the manufacturing cost can be reduced compared to the case where the indicator drive circuit is prepared separately.

Abstract: It is an object of the present invention to easily connect lead wire section formed on end portion of support substrate to driving circuit parts or a wiring board. A sealing space for sealing up self-emission element sections and is formed between a pair of support substrates. Lead wires for leading signal wires from the sealing space are formed on at least one of the pair of support substrates. Meanwhile, a signal connection member for connecting signal wires formed on the pair of support substrates is formed between the support substrates. In this way, electric signals can be supplied from one support substrate carrying the lead wires formed thereon to the self-emission element section formed on the other support substrate through the signal connection member.

Abstract: A transparent electrode layer, an organic EL layer, and a metallic electrode layer are stacked on top of each other in layers on the lower surface of a transparent substrate to form a planar light emitting element region in a light emitting device. A light beam which is emitted from the light emitting element region and incident on the transparent substrate is transmitted out from a display region as well as a light transmitting region formed near an edge of the transparent substrate. Thus, the light emitting device is enabled to facilitate fabrication and make an effective use of the entire surface of the transparent substrate as the light transmitting region.

Abstract: The anode sides of respective EL elements E1-E4 constituting icons are connected to a first potential V1, the cathode sides of the EL elements E1-E4 are connected to current absorption sides of constant current sources I1-I4, and current output sides of the constant current sources are connected to a second potential V2 whose potential is lower than that of the first potential via light emission control switches S11-S14. Current regulating resistors R101-R104 are connected in parallel corresponding to the respective EL elements E1-E4, and therefore by appropriately selecting the resistance values of the current regulating resistors R101-R104, light emission intensities of the respective EL elements E1-E4 constituting icons can be regulated appropriately. During an all extinction period during which the respective EL elements E1-E4 are all extinguished, an analog switch S201 is turned off, and an analog switch S202 is turned on.

Abstract: An organic EL display includes a transparent electrode 2, an organic EL layer 3, 4, and a back electrode 5 sequentially stacked on a transparent substrate 1. A half mirror 6 is disposed on the outer surface of the transparent substrate 1. A thin metal film is formed as the half mirror 6 by vapor-depositing or sputtering one of metals such as Al, Ag, Sn and Cr and a compound such as TiO2 or several of the metals and compound on the outer surface of the transparent substrate 1. A transparent resin film on which a thin metal film is formed, or the like is used.

Abstract: In order to realize, at a low cost, the function of an indicator which is brought to a light emitting state during a wait state, a panel 1 as a display section is constituted by self light emitting elements E11-Enm for example by organic EL elements, and organic EL elements which function as the indicator Ei which is brought to the light emitting state during the wait state are also formed on the same panel. Meanwhile, an indicator drive circuit 13 which drives and allows the organic EL elements that function as the indicator Ei to emit light is constructed by one chip IC together with the data driver 2. By forming the indicator drive circuit 13 as one chip IC in a data driver 2, the manufacturing cost can be reduced compared to the case where the indicator drive circuit is prepared separately.

Abstract: In a drive method of a light-emitting display panel capable of emitting light in low luminance, the parasitic capacitances of the light-emitting elements disposed in the light-emitting display panel are precharged making use of a reverse bias voltage before they are lit. In this case, a reverse bias voltage created by a reverse bias voltage creation circuit or a peak current being precharged is controlled by selectively grounding control terminals based on dimmer control. In particular, when the light-emitting elements are emitted in low luminance, the reverse bias voltage is output in a low level, thereby the light-emitting elements are prevented from being precharged with an excessive voltage. The above arrangement can realize light emission control in low luminance.

Abstract: A light emitting display device 1 characterized by forming one display screen by combining a plurality of light emitting display units comprising intensity control means for measuring a light emission intensity by a light emitting element (organic EL element 20) which is formed above/on a transparent substrate 11 and which includes an anode electrode 12, a cathode electrode 16, at least one organic light emission functional layer (13,14,15) between the electrodes to control the light emission intensity of the light emitting element above/on the substrate 11 within a predetermined range and deterioration state reporting means for detecting a deterioration state of the light emitting element above/on the substrate 11 to report the state.

Abstract: The present invention is to provide a drive device and a drive method of a self light emitting display panel which can dissolve at low cost a technical problem which occurs due to the provision of constant current sources in a lighting driving circuit of a display panel. A scan driver 3 and a data driver 10 set all scan lines K1 to Km and all data lines A1 to An arranged on the display panel 1 at the same electrical potential at a switching time of scan so that a reset operation for discharging electrical charges accumulated in parasitic capacitances of respective light emitting elements E11 to Enm is performed. Charge current which follows the reset operation, which is from a driving voltage source 4, which charges the parasitic capacitances of the light emitting elements in the non-scan state is supplied as a forward current to a light emitting element which is scanned and lit so that this light emitting element is driven to emit light, utilizing the driving voltage source 4.

Abstract: An organic EL structure body 2 is formed on a surface of a transparent substrate 1, and the EL structure body 2 is sealed by a metal airtight container 20. Circuit structure bodies such as an anode driver circuit 11 and a cathode driver circuit 12 are mounted on a part of the transparent substrate 1. These earth lines, for example, are commonly connected through conductors 21a and 21b. Therefore, the above-mentioned circuit structure bodies are mutually connected by the earth line of low impedance, so that an obstruction occurred in the EL display device under an earth line of high impedance can be suppressed.

Abstract: A transparent electrode layer, an organic EL layer, and a metallic electrode layer are stacked on top of each other in layers on the lower surface of a transparent substrate to form a planar light emitting element region in a light emitting device. A light beam which is emitted from the light emitting element region and incident on the transparent substrate is transmitted out from a display region as well as a light transmitting region formed near an edge of the transparent substrate. Thus, the light emitting device is enabled to facilitate fabrication and make an effective use of the entire surface of the transparent substrate as the light transmitting region.

Abstract: Provided is a driving device that enables compensating for the decrease in luminance characteristic due to the aging of an EL display panel. On a transparent substrate 11 made of, for example, glass, there are lamination-formed a number of luminescent elements 20. By this, a light from the luminescent element is radiated, via the transparent substrate, in a direction of its intersecting a substrate surface thereof, thereby a display image is formed. The driving device is equipped with photo-electric conversion means 23 that, when receiving part of the light from the luminescent element 20 that, by using as the interface a substrate surface of the transparent substrate 11 or a substrate surface of a light-guiding substrate 72 disposed on the transparent substrate 1 in a laminated state, is reflected within the substrate, produces an electric signal, as well as drive power setting means 25 that sets a luminescent drive power that is supplied to each of the luminescent elements.

Abstract: In a drive method of a light-emitting display panel capable of emitting light in low luminance, the parasitic capacitances of the light-emitting elements disposed in the light-emitting display panel are precharged making use of a reverse bias voltage before they are lit. In this case, a reverse bias voltage created by a reverse bias voltage creation circuit or a peak current being precharged is controlled by selectively grounding control terminals based on dimmer control. In particular, when the light-emitting elements are emitted in low luminance, the reverse bias voltage is output in a low level, thereby the light-emitting elements are prevented from being precharged with an excessive voltage. The above arrangement can realize light emission control in low luminance.

Abstract: In an apparatus for driving a luminescent display panel, in a state in which scanning lines are sequentially scanned to drive and illuminate light-emitting elements, a voltage peak value arising in a scanning line in a non-scanning state is held by a capacitor through parasitic capacitance of the light-emitting element in a non-scanning state. On the basis of the voltage value held by the capacitor, a reverse bias voltage to be output from a reverse bias voltage generation circuit is controlled, and the voltage is supplied to the scanning lines.

Abstract: An organic EL display includes a transparent electrode 2, an organic EL layer 3, 4, and a back electrode 5 sequentially stacked on a transparent substrate 1. A half mirror 6 is disposed on the outer surface of the transparent substrate 1. A thin metal film is formed as the half mirror 6 by vapor-depositing or sputtering one of metals such as Al, Ag, Sn and Cr and a compound such as TiO2 or several of the metals and compound on the outer surface of the transparent substrate 1. A transparent resin film on which a thin metal film is formed, or the like is used.